Publications of the

National Bureau of Standards

Published by NBS

July 1960 through June 1966

Published by Others 1960 through 1965

United States Department of Commerce

National Bureau of Standards

Supplement to Miscellaneous Publication 240
THE NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards1 provides measurement and technical information services

essential to the efficiency and effectiveness of the work of the Nation's scientists and engineers. The

Bureau serves also as a focal point in the Federal Government for assuring maximum application of

the physical and engineering sciences to the advancement of technology in industry and commerce. To

accomplish this mission, the Bureau is organized into three institutes covering broad program areas of research and services: THE INSTITUTE FOR BASIC STANDARDS . . . provides the central basis within the United

States for a complete and consistent system of physical measurements, coordinates that system with the measurement systems of other nations, and furnishes essential services leading to accurate and uniform

physical measurements throughout the Nation's scientific community, industry, and commerce. This

Institute comprises a series of divisions, each serving a classical subject matter area: —Applied Mathematics—Electricity—Metrology—Mechanics—Heat—Atomic Physics—Physical Chemistry—Radiation Physics—Laboratory Astrophysics2 —Radio Standards Laboratory,- which

includes Radio Standards Physics and Radio Standards Engineering—Office of Standard Refer- ence Data. THE INSTITUTE FOR MATERIALS RESEARCH . . . conducts materials research and provides

associated materials services including mainly reference materials and data on the properties of materials. Beyond its direct interest to the Nation's scientists and engineers, this Institute yields services which are essential to the advancement of technology in industry and commerce. This Institute is or- ganized primarily by technical fields: —Analytical Chemistry—Metallurgy—Reactor Radiations—Polymers—Inorganic Materials—Cryogenics2—Materials Evaluation Laboratory—Office of Standard Reference Materials. THE INSTITUTE FOR APPLIED TECHNOLOGY . . . provides technical services to promote the use of available technology and to facilitate technological innovation in industry and government. The

principal elements of this Institute are: —Building Research—Electronic Instrumentation—Textile and Apparel Technology Center

Technical Analysis—Center for Computer Sciences and Technology—Office of Weights and Measures—Office of Engineering Standards Services—Office of Invention and Innovation—Clearing- house for Federal Scientific and Technical Information. 3

1 Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted; mailing address Washington, D. C,

20234.

2 Located at Boulder, Colorado, 80302.

3 Located at 5285 Port Royal Road, Springfield, Virginia, 22151.
UNITED STATES DEPARTMENT OF COMMERCE

Alexander B. Trowbridge, Acting Secretary NATIONAL BUREAU OF STANDARDS • A. V. Astin, Director

Publications of the

National Bureau of Standards

Published by NBS

July 1960 through June 1966

Published by Others 1960 through 1965 (With Subject and Authors Indexes)

Betty L. Oberholtzer

National Bureau of Standards Supplement to Miscellaneous Publication 240

To Accompany National Bureau of Standards C460, its Supplement, and Miscellaneous Publication 240 Issued April 3, 1967

For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington 25, D.C.

Price $4.00
NBS PUBLICATIONS PROGRAM

For many years, the National Bureau of Standards

formal publication program has provided a principal and effective means of communicating the results of

the Bureau's research, development, and service activities to the scientific and technical community. Publi- cations thus constitute a major end product of the Bureau's efforts, totalling about 1200 items per year,

published in the Bureau's four periodicals, its eight nonperiodical series, and in the journals of professional organizations and technological associations. This book lists those publications reporting the re- sults of the Bureau's in-house programs and not the

publications and services of the Clearinghouse for Federal Scientific and Technical Information (see below). PERIODICALS

The Bureau publishes four periodicals: The Journal

of Research (in three sections) and the Technical News

Bulletin. It also publishes eight categories of nonperiodicals: Monographs, Handbooks, Applied Mathematics Series, National Standard Reference Data

Series, Building Science Series, Miscellaneous Publications, Technical Notes, and Product Standards. The Journal of Research reports NBS research and

development in physics, chemistry, mathematics, and

engineering. It is published in three sections, which

are available separately, as follows: Physics and Chemistry carries papers of interest pri- marily to scientists working in these fields. Covers a broad range of physical and chemical research. Issued

six times a year. Mathematics and Mathematical Physics includes studies and compilations designed mainly for the mathematician and theoretical physicist. Issued quarterly. Engineering and Instrumentation reports results of

interest chiefly to the engineer and applied scientist.

Includes many of the new developments in instrumentation resulting from the Bureau's work in physical measurement, data processing, and development of

test measurements. It will also cover some of the work

in acoustics, applied mechanics, building research, and

cryogenic engineering. The Technical News Bulletin is a monthly magazine

reporting results of NBS programs in measurement

standards and techniques, properties of matter and

materials, engineering standards and services, computer

sciences and technology, and instrumentation. This

publication is designed for the industry-oriented person whose daily work involves intimate contact with science and technology—engineers, chemists, physicists, re- search managers, product development managers, and company executives. The TNB is the best single source

of information concerning the Bureau's research, de- velopmental, and cooperative activities. Since it carries a monthly list of new NBS publications, it is also the

best means of keeping up-to-date on Bureau publications. NONPERIODICAL

The Bureau's eight categories of nonperiodical publi- cations are briefly described as follows: Monographs—major contributions to the technical

literature on various subjects related to the Bureau's

scientific and technical activities. Handbooks—recommended codes of engineering and in- dustrial practice developed in cooperation with inter- ested industries, professional organizations, and regulatory bodies. Applied Mathematics Series — mathematical tables, manuals, and studies. National Stayidard Reference Data Series — NSRDS

provides quantitative data on the physical and chemical

properties of materials, compiled from the world's

literature and critically evaluated. Developed under a world-wide program coordinated by NBS.

PUBLICATIONS

Building Science Series—research results, test methods, and performance criteria of building materials, components, systems, and structures. Miscellaneous Publications — charts, administrative pamphlets, annual reports of the Bureau, conference

reports, bibliographies, and so on. Technical Notes—communications and reports (covering both NBS-and other agency-sponsored work) of limited or transitory interest. Product Standards—developed cooperatively with in- terested Government and industry groups, and used

voluntarily. Product Standards have included Commercial Standards (material requirements and quality

criteria) and Simplified Practice Recommendations

(sizes, models, and dimensions of commonly stocked

items.) When revised, these standards will become

Product Stayidards. PAPERS PUBLISHED BY OTHERS

Many significant contributions by NBS authors ap- tin as well as in each section of the Journal of Repear in non-NBS publications. Up-to-date listings of search along with selected abstracts, these articles are carried in the Technical News Bulle- CLEARINGHOUSE

The Clearinghouse for Federal Scientific and Technical Information is operated by NBS. As its name

implies, it functions as a clearinghouse to facilitate the

flow of unclassified information from Government-generated science and technology programs (defense, space, atomic energy, and so on) to interested users, both in Government and private organizations. Clear- inghouse publications include a Government-wide index

of research and development reports, selected bibliographies, technical translations, a "fast announcement"

service of selected new R and D reports, and "package

reviews", which are Government R and D reports on

specialized areas of technology. Specific listings of these documents are not included in this publication. For further information on Clearinghouse services, write: Clearinghouse for Federal Scientific and Technical Information, National Bureau of Standards, U. S. Department of Commerce, Springfield, Virginia, 22151. II
Contents

Page NBS Publications Program II

1. General information IV

1.1. Purchase procedures IV

1.2. Announcements of NBS publications., IV

1.3. Catalogs of NBS publications V

1.4. Depository Libraries in the United States V

1.5. Field Offices of the U.S. Department of Commerce XIII

2. Description of NBS Periodicals and Nonperiodicals XV

2.1. Journal of Research, Section A, B, C, and D XV

2.2. Technical News Bulletin XV

2.3. CRPL Ionospheric Radio Predictions (formerly Basic Radio Propagation

Predictions)* XV

2.4. Periodical Subscription rates XVI

2.5. Nonperiodicals XVI

3. Titles and abstracts of NBS Publications XVI

3.1. Journal of Research, Section A 1 3.2. Journal of Research, Section B 61

3.3. Journal of Research, Section C 80

3.4. Journal of Research, Section D* 112

3.5. Circulars** 199

3.6. Monographs 199

3.7. Handbooks 213

3.8. Miscellaneous Publications 218

3.9. Applied Mathematics Series 227

3.10. National Standard Reference Data Series 227

3.11. Building Science Series 228

3.12. Commercial Standards*** 230

3.13. Simplified Practice Recommendations*** 233

3.14. Technical Notes 234

4. Titles of papers published by others, 1960 through 1965 273

5. Availability of NBS publications 396

5.1. Price lists 396

5.2. Reprints of articles by NBS authors 404

5.3. Out-of-print materials 405

6. Indexes 406

6.1. How to use the indexes 406

6.2. Author index 409

6.3. Subject index 473

Published by Environmental Science Services Administration since January 1966, following transfer

of Central Radio Propagation Laboratory to that agency.

** The Circular series has been discontinued. However, several publications in this category are still

ITI
1. GENERAL INFORMATION

1.1. PURCHASE PROCEDURES

The publications of the Bureau are available from the Superintendent of Documents, U.S. Government Printing Office, Washington, D. C,

20402, at the prices listed in this publication. You may also order through the U. S. Depart- ment of Commerce Field Office nearest you (see page XIII for list of Field Offices of the U. S. Department of Commerce). Nonperiodicals

(only) may also be ordered through the Clear- inghouse for Federal Scientific and Technical Information, National Bureau of Standards,

U. S. Department of Commerce, Springfield, Virginia 22151. (See pg. 396 for price lists of available publications, plus instructions on how to acquire re- prints of articles by NBS authors, and how to get out-of-print material.) How to Make Remittances. Remittances for publications for which individual sales or subscription prices are shown should be mailed to Superintendent of Documents, U. S. Govern- ment Printing Office, Washington, D. C. 20402, by coupon, postal money order, express money

order, or check. Postage stamps will not be ac- cepted. Publications cannot be mailed before remittances are received. Foreign remittances

should be made either by international money

order or draft on an American bank. The letter symbol, publication number, and

full title of the publication must be given when

ordering. The Superintendent of Documents

allows a discount of 25 percent on orders of 100

or more copies of one publication. For the convenience of the general public, coupons in the denomination of five cents may

be purchased from the Superintendent of Documents. These may be exchanged for Govern- ment publications sold by the Superintendent's

office. Address order to Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402. Persons who make frequent purchases from

the Superintendent of Documents may find a de- posit account convenient. Deposits of $25 or more are accepted against which orders may be

placed without making individual remittances

or first obtaining quotations. Order blanks are furnished for this purpose. After the handling

of the order has been completed, it will be re- turned showing the publications supplied, ex- planations regarding those not sent, the amount

of charge, and the balance on deposit. No charge is made for postage on documents

sent to points in United States and possessions, or to Canada, Mexico, Newfoundland (includ- ing Labrador), and certain Central and South American countries. To other countries the reg- ular rate of postage is charged, and remittances must cover such postage. In computing foreign

postage, add one-fourth of the price of the publication. This Supplement to the Publications of the National Bureau of Standards (Miscellaneous

Publication 240) lists the publications of the Bureau issued between July 1, 1960 and June

30, 1966. It includes an abstract of each NBSissued publication; a list of papers by Bureau

authors appearing in non-NBS journals from

1960 through 1965 (plus some earlier papers

omitted from Miscellaneous Publication 240) ; subject and author indexes; and general infor- mation and instructions about NBS publications. Miscellaneous Publication 240 (covering the period July 1, 1957 through June 30, 1960) re- mains in effect. Two earlier lists, Circular 460

(Publications of the National Bureau of Standards, 1901 to June 19%7) and its supplement (Supplementary List of Publications of the National Bureau of Standards, July 1, 19%7 to June

SO, 1957) are also still in effect.

1.2. ANNOUNCEMENTS OF NBS PUBLICATIONS The Bureau itself does not maintain an indi- vidual mailing list for announcing its new publications. However, the Government agencies mentioned below regularly issue the following

official announcements dealing in whole or in part with new NBS publications. In addition, many of the technical journals carry notices of new NBS publications of interest in the journals' respective fields. Technical Netvs Bulletin. Issued monthly by

the National Bureau of Standards. Announces

all new publications by members of the staff, including those appearing in other journals. Available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402. Annual subscription, $1.50; $2.25 foreign. Single copies, 15 cents

each. Monthly Catalog of United States Government

Publications. Issued monthly by the Superin- tendent of Documents, U. S. Government Print- ing Office, Washington, D. C. 20402. Annual

subscription, with consolidated annual index,

$4.50; $6.00 foreign. Price Lists. Publication lists prepared by the Superintendent of Documents on special subjects. Single copies sent on request without

charge provided you state the subject matter

field in which you desire information. For a complete List and order form for subject price

lists, request a copy of How to Keep in Touch

with United States Government Publications from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402. IV
List of Selected Government Publications. Issued semimonthly by the Superintendent of Documents. Each list is arranged alphabetically by subjects, with annotations and prices. May

be obtained free from that office. Business Service Check List. Weekly an- nouncements of publications of the Department

of Commerce. Lists titles and prices of National Bureau of Standards publications, as well as those of other offices of the Department of Commerce. Available from the Superintendent

of Documents for $2.00 a year domestic ; $4.00

foreign.

1.3. CATALOGS OF NBS PUBLICATIONS

Previous catalogs, plus this publication, constitute a complete list of the titles of the Bureau's publications through June 30, 1966, including brief abstracts of the material published in the NBS publication series. Where the

price is given, the catalog is available from the Superintendent of Documents, U. S. Govern- ment Printing Office, Washington, D. C. 20402. Otherwise, it may be consulted in a library which maintains sets of National Bureau of Standards publications.

Circular 24, 7th edition: Publications of the Bureau of Standards 1901 to 1925. 271 pages, in- cluding- brief abstracts and subject index.... (*) Circular 24 Supplement: Supplementary list of publications of the Bureau of Standards, July

1, 1925, to December 31, 1931. 214 pages, in- cluding brief abstracts and subject index .... (*) Circular 24 Supplement: Supplementary list of

publications of the National Bureau of Standards, January 1, 1932, to December 31, 1941. 386 pages, including brief abstracts. The subject and author indexes cover the period 1901

to December 31, 1941 (*) Circular 460: Publications of the National Bureau of Standards 1901 to June 30, 1947. 375

pages, including subject and author indexes. Brief abstracts are included for the period January 1, 1941, to June 30, 1947 $1. 25 Supplement to Circular 460, Publications of the National Bureau of Standards, July 1, 1947, to June 30, 1957. 373 pages, including subject and author indexes $1. 50 Miscellaneous Publication 240: Publications of the National Bureau of Standards July 1, 1957, to June 30, 1960. Includes Titles of Papers Published in Outside Journals 1950 to 1959. 391 pages, including subject and author

indexes $2. 25 Supplement to Miscellaneous Publication 240, Publications of the National Bureau of Standards published by NBS, July 1960 through June 1966; published by Others, 1960 through

1965. 740 pages, including subject and author

indexes $4. 00

* Out of print.

1.4. DEPOSITORY LIBRARIES IN THE UNITED STATES

The Superintendent of Documents, United States Government Printing Office, is authorized by law to furnish Government publications to designated depository libraries. The libraries listed below are now receiving selected publication series of the National Bureau of Standards for general reference use. Whether a given library has a copy

of a particular publication can only be determined by inquiring at the library. ALABAMA

Auburn: Auburn University Library. Birmingham: Howard College, Harwell G. Davis Library. Birmingham Southern College, M. Paul Phillips Library.

Public Library. Sanford University. Florence: Florence State College, Collier Library. Gadsden: Gadsden Public Library.

Huntsville: University of Alabama in Huntsville

Library.

Jacksonville: State Teachers College Library. Maxwell A.F. Base: Air University Library. Mobile: Mobile Public Library. Mobile (Spring Hill): Spring Hill College, Thomas

Byrne Memorial Library. Montgomery:

Department of Archives and History Library. Supreme Court Library of Alabama. Normal: Alabama Agricultural and Mechanical College, Carnegie Library.

St. Bernard: St. Bernard College Library. Troy: Troy State College Library. Tuskegee Institute: Hollis Burke Frissell Library. University: University of Alabama Library — RE- GIONAL.

ALASKA

Anchorage

:

Anchorage Community College Library. Anchorage Methodist University Library.

College: University of Alaska Library. Juneau: Alaska State Library. AMERICAN SAMOA

Pago Pago: Library of American Samoa. ARIZONA

Flagstaff: Arizona State College Library. Northern Arizona University. Phoenix: Department of Library and Archives—REGIONAL.

Phoenix Public Library. Tempe: Arizona State University, Matthews Library. Thatcher: Eastern Arizona Junior College Library. Tucson: University of Arizona Library—REGIONAL.

Yuma: Yuma City-County Library. ARKANSAS

Arkadelphia: Ouachita Baptist College Library.

Batesville: Arkansas College Library.
Clarksville: College of the Ozarks Library. College Heights: Arkansas Agricultural and Mechanical College Library. Conway: Hendrix College, The H. F. Buhler Library.

Fayetteville: University of Arkansas Library.

Little Rock:

Little Rock Public Library. Supreme Court Library. Magnolia: Southern State College, J. M. Peace Library.

Russellville: Arkansas Polytechnic College Library. Searcy: Harding College Beaumont Memorial Library.

State College: Arkansas State College Library. CALIFORNIA

Anaheim: Anaheim Public Library. Areata: Humboldt State College Library.

Bakersfield: Kern County Free Library. Berkeley: Earl Warren Legal Center Library of Univ. of Cali- fornia at Berkeley. University of California Library. Chico: Chico State College Library. Claremont: Pomona College, Honnold Library. Culver City: Culver City Library. Davis: University of California Library. Downey: Downey City Library. Fresno: Fresno County Free Library. Fresno State College Library.

Fullerton: California State College at Fullerton Li- brary. Gardena: Gardena Library.

Goleta: University of California at Santa Barbara Li- brary. Hayward: California State College Library at Hayward.

Inglewood: Inglewood Public Library.

Irvine: University of California at Irvine Library. La Jolla: University of California at La Jolla Library. Lancaster: Antelope Valley College Library. Long Beach:

California State College Library at Long Beach.

Public Library. Los Angeles:

California State College at Los Angeles, John F. Kennedy Memorial Library. Los Angeles County Law Library. Los Angeles Public Library. Loyola University of Los Angeles Library. Occidental College Library. Pepperdine College Library. University of California at Los Angeles Library. University of California, School of Law Library. University of Southern California Library. Lynwood: Lynwood Library. Marysville: Yuba College District Library. Menlo Park: Dept. of Interior, Geological Survey Li- brary. Montebello: Rio Hondo Regional Library. Monterey: Naval Postgraduate School Library. Monterey Park: Bruggemeyer Memorial Library. Northridge: San Fernando Valley State College Li- brary. Oakland: Oakland Public Library. Orange: Orange County Free Library. Pasadena:

California Institute of Technology Library. Pasadena Public Library. Pleasant Hill: Contra Costa County Libray. Redding: Shasta County Free Library. Redlands: University of Redlands Library. Reseda: West Valley Regional Branch Library. Richmond: Richmond Public Library.

Riverside: Riverside Public Library. University of Califomia at Riverside Library. Sacramento:

California State Library—REGIONAL.

City Free Library.

Sacramento County Law Library. Sacramento State College Library. San Bernardino: San Bernardino College Library. San Diego: San Diego County Library. San Diego Public Library. San Diego State College Library. San Francisco: Mechanics Institute Library. San Francisco Public Library. San Francisco State College, Social Science and

Business Library. Univ. of San Francisco, Richard A. Gleeson Li- brary. San Jose: San Jose State College Library. San Leandro: San Leandro Community Library Center. Santa Ana: Santa Ana Public Library. Santa Clara: University of Santa Clara, Michel Orradre Library. Santa Cruz: University of California at Santa Cruz, University Library. Santa Rosa: Santa Rosa Public Library. Stanford: Stanford University Libraries. Stockton : Stockton Free Public Library. Thousands Oaks: California Lutheran College Library. Turlock: Stanislaus State College Library. Walnut: Mt. San Antonio College Library. West Covena: West Covena Library. Whittier: Whittier College Library. CANAL ZONE

Balboa Heights: Canal Zone Library. COLORADO

Alamosa: Adams State College Library. Boulder: University of Colorado Library—REGIONAL.

Colorado Springs: Colorado College, Charles Learning Tutt Library. Denver

:

Colorado State Library. Dept. of Interior, Bur. of Reclamation Library.

Public Library—REGIONAL.

Regis College Library. University of Denver, Mary Reed Library. Fort Collins: Colorado State University Library. Golden: Colorado School of Mines Library. Greeley: Colorado State College. Gunnison: Western State College Library. La Junta:

Otero Junior College, Wheeler Library. Pueblo: McClelland Public Library. Southern Colorado State College Library.

U.S. Air Force Academy: Academy Library. CONNECTICUT

Bridgeport: Bridgeport Public Library.

Bristol: Public Library. Hartford

:

Connecticut State Library—REGIONAL.

Hartford Public Library.

Trinity College Library. Middletown: Wesleyan University, Olin Library. Mystic: Mystic Seaport Library. New Haven: Yale University Library. New London:

Connecticut College, Palmer Library.

U.S. Coast Guard Academy Library.

Storrs: University of Connecticut Library. Waterbury: Silas Branson Library. DELAWARE

Dover:Delaware State College Library.

State Law Library. Newark: University of Delaware, Morris Library. Wilmington: Wilmington Institute Free Library.
DISTRICT OF COLUMBIA

Washington: Bureau of the Budget Library, Exec. Office of the

President.

Civil Service Commission Library. Department of Commerce Library. Department of Health, Education, and Welfare

Library. Department of Interior Central Library. Department of Interior, Geological Survey Library. Department of Justic Main Library. Department of State Library. National Agricultural Library. National War College Library. Navy Department Library. Navy Department, Office of Judge Advocate General Library. Post Office Department Library.

Public Library. Treasury Department Library. FLORIDA

Boca Raton: Florida Atlantic University Library. Coral Gables: University of Miami Library. Daytona Beach: Volusia County Public Libraries. De Land: John B. Stetson University, Sampson Library.

Gainesville: University of Florida Library—REGIONAL.

Jacksonville: Jacksonville Public Library.

Jacksonville University Library. Lakeland: Park Trammell Public Library. Leesburg: Lake-Sumter Junior College Library. Melbourne: Brevard Engineering College Library. Miami: Miami Public Library. Orlando: Florida Technological University. Palatka: St. Johns River Junior College Library. Pensacola: University of West Florida. Tallahassee: Florida Agricultural and Mechanical University

Library. Florida State Library. Florida State University Library. Tampa: Tampa Public Library. University of South Florida Library. University of Tampa Library. Winter Park: Rollins College, Mills Memorial Library. GEORGIA

Albany: Albany Public Library. Americus: Georgia Southwestern College. Athens: University of Georgia Libraries. Atlanta: Atlanta Public Library. Atlanta University, Trevor Arnett Library. Emory University, Asa Griggs Candler Library. Georgia Institute of Technology, Price Gilbert Memorial Library. Georgia State Library. Augusta: Augusta College Library. Brunswick: Brunswick Public Library.

Carrollton: West Georgia College Library. Dahlonega: North Georgia College Library. Macon: Mercer University Library.

Milledgeville: Woman's College of Georgia Library. Savannah: Savannah Public Library. Statesboro: Georgia Southern College Library. Valdosta: Valdosta State College Library. GUAM

Agana : Nieves M. Flores Memorial Library.

HAWAII

Hilo: University of Hawaii, Hilo Campus Librai-y. Honolulu: Chaminade College Library. Library of Hawaii. Municipal Reference Library. University of Hawaii Library.

Laie: Church College of Hawaii Library. Wailuku: Maui County Library. IDAHO

Boise:Boise College Library. Boise Public Library. Idaho State Law Library. Caldwell: The College of Idaho, Strahorn Memorial

Library. Moscow: University of Idaho Library—REGIONAL.

Pocatello: Idaho State University Library. Rexburg: Ricks College Library. ILLINOIS

Bloomington: Illinois Wesleyan University Libraries. Carbondale: Southern Illinois University Library. Champaign: University of Illinois Law Library.

Carlinville: Blackburn College Library. Charleston: Eastern Illinois University, Booth Library. Chicago: Chicago National Historical Museum Library. Chicago Public Library. Chicago Teachers College Library. Chicago Teachers College, North Campus Library.

Illinois Teachers College. John Crerar Library. Loyola University Library. Newberry Library. University of Chicago Law Library. University of Chicago Libraries. University of Illinois, Chicago Circle Campus Li- brary. Decatur: Decatur Public Library. De Kalb: Northern Illinois University Library. Edwardsville: Southern Illinois University, Edwardsville Service Center Library. Elsah: Principia College, Marshall Brooks Library. Evanston: Northwestern University Library. Freeport: Freeport Public Library. Galesburg: Galesburg Public Library.

Jacksonville: MacMurray College Library. Kankakee: Olivet Nazarene College Library. Lake Forest: Lake Forest College, Donnelley Library.

Lisle: St. Procopius College Library. Lockport: Lewis College of Science and Technology

Library. Macomb: Western Illinois University Memorial

Library. Monmouth: Monmouth College Library. Normal: Illinois State Normal University Library.

O.ak Park: Oak Park Public Library. Peoria: Bradley University Library. Peoria Public Library. River Forest: Osary College Librai-y. Rock Island: Rock Island Public Library. Rockford: Public Library.

Springfield: Illinois State Library—REGIONAL.

Urbana: University of Illinois Library. Wheaton: Wheaton College Library. Woodstock: Woodstock Public Library. INDIANA

Anderson: Anderson College, Charles E. Wilson Li- brary. Bloomington: Indiana University Library.
Crawfordsville: Wabash College Library.

Evansville: Evansville Public Library. Fort Wayne:

Indiana-Purdue University Regional Campus Li- brary. Public Library. Gary:Gary Public Library. Indiana University Northwest Campus Library. Greencastle: De Pauw University Library. Hammond: Hammond Public Library. Hanover: Hanover College Library. Huntington: Huntington College Library.

Indianapolis: Butler University, Irwin Library. Indiana State Library—REGIONAL.

Indianapolis Public Library.

Jeffersonville: Indiana University, Southeastern Campus Library. Lafayette: Purdue University Library. Muncie:

Ball State Teachers College Library. Public Library. Notre Dame: University of Notre Dame Library. Rensselaer: St. Joseph's College Library. Richmond: Earlham College, Lilly Library. Morrison-Reeves Library. South Bend: Indiana University, South Bend-Misha- waka Campus Library. Terre Haute: Indiana State College Library. Valparaiso: Valparaiso University Library. IOWA

Ames: Iowa State University of Science and Tech- nology Library. Cedar Falls: State College of Iowa Library. Council Bluffs: Free Public Library. Des Moines: Iowa State Traveling Library. Public Library. Dubuque: Carnegie Stout Free Public Library.

Fairfield: Parsons College Library Branch of Fairfield Free Public Library.

Grinnell: Grinnell College Library. Iowa City: State University of Iowa Library—RE- GIONAL.

Lamoni: Graceland College Library. Mount Vernon: Cornell College Library. Sioux City: Public Library. Spencer: Spencer Public Library. KANSAS

Atchison: St. Benedict's College, The Abbey Library. Baldwin City: Baker University Library. Emporia: Kansas State Teachers College, William Allen White Library. Hays: Fort Hays Kansas State College, Forsyth

Library. Hutchinson: Hutchinson Public Library. Lawrence: University of Kansas Library. Manhattan: Kansas State University Library. Pittsburg: Kansas State College of Pittsburg, Porter

Library.

Salina : Kansas Wesleyan University Library. Topeka: Kansas State Historical Society Library. Kansas State Library. Wichita: Wichita State University Library. KENTUCKY

Ashland: Ashland Public Library.

Barbourville: Union College, Abigail E. Weeks Memorial Library. Bowling Green: Western Kentucky State Teachers Col- lege T 'brary. Danvilie: Centre College Library.

Elizabethtown: Oxbow Regional Library. Frankfort: State Law Library. Lexington : University of Kentucky Library.

Louisville: Louisville Free Public Library. University of Louisville Library. Morehead: Morehead State College, Johnson Camden

Library. Murray: Murray State College Library. Oweiisboro: Kentucky Wesleyan College Library.

Pikeville: Pikeville College Library. Richmond: Eastei'n Kentucky University Library. LOUISIANA

Baton Rouge:

Louisiana State University Law Library. Louisiana State University Library-—REGIONAL.

Southern University Library. Hammond: Southeastern Louisiana College Library. Lafayette: University of Southwestern Louisiana Li- brary. Lake Charles: McNeese State College Library. Monroe: Northeast Louisiana State College, Sandel

Library. Natchitoches: Northwestern State College of Louisiana. New Orleans: Law Library of Louisiana. Louisiana State University Library. Loyola University Library. New Orleans Public Library. Southern University in New Orleans Library. Tulane University, Howard-Tilton Memorial Li- brary. Ruston: Louisiana Polytechnic Institute Library—RE- GIONAL.

Shreveport: Shreve Memorial Library. Thibodaux: Francis T. Nicholls State College Library. MAINE

Augusta : Maine State Library. Bangor: Bangor Public Library. Brunswick: Bowdoin College Library. Lewiston: Bates College Library. Orono: University of Maine Library—REGIONAL.

Portland: Portland Public Library. University of Maine Law Library. Springvale: Nasson College Library. Waterville: Colby College Library. MARYLAND

Annapolis: Maryland State Library. U.S. Naval Academy Library. Baltimore: Enoch Pratt Free Library. Goucher College Library. Johns Hopkins University Library. Morgan State College Library. Peabody Institute Library. Bethesda: Montgomery County Department of Public

Libraries. Chestertown : Washington College, George Avery

Bunting Library.

College Park: University of Maryland Library

REGIONAL.

Germantown : Atomic Energy Commission Library.

Salisbury: Salisbury State College Library. Westminster: Western Maryland College Library. MASSACHUSETTS

Amherst

:

Amherst College Library. University of Massachusetts, Goodell Library.
Boston

:

Boston Athenaeum Libz-ary. Boston College Libraries. Northeastern University, Dodge Library.

Public Library of the City of Boston.

State Library of Massachusetts—REGIONAL.

Brookline: Public Library. Cambridge: Harvard College Library, Serials Division. Massachusetts Institute of Technology Library. Lowell : Lowell Technological Institute Library. Lynn : Lynn Public Library. M'edford : Tufts University Library. New Bedford: Public Library. North Dartmouth: Southeastern Massachusetts Technological Institute Library. North Easton: Stonehill College, Cushing-Martin

Library. Waltham : Brandeis University Library.

Wellesley: Wellesley College Library. Wenham: Gordon College, Winn Library. Williamstown: Williams College Library. Worcester

:

American Antiquarian Society Library. Free Public Library. MICHIGAN

Albion: Albion College Library.

Allendale: Grand Valley State College Library. Alma: Alma College, Monteith Library. Ann Arbor: University of Michigan, General Library.

Battle Creek: Willard Library. Benton Harbor: Benton Harbor Public Library.

Bloomfield Hills: Cranbrook Institute of Science Library. Dearborn : Henry Ford Community College Library.

Detroit

:

Detroit Public Library—REGIONAL.

Marygrove College Library. Mercy College Library. University of Detroit Library. Wayne County Public Library. Wayne State University Library. East Lansing: Michigan State University Library. Escanaba: Michigan State Library, Upper Peninsula Branch.

Flint: Flint Junior College Library. Grand Rapids: Grand Rapids Public Library. Houghton: Michigan College of Mining and Technology

Library. Kalamazoo:

Public Library. Western Michigan University, Dwight B. Waldo

Library. Lansing: Michigan State Library—REGIONAL.

Livonia: Schoolcraft College Library. Marquette: Northern Michigan College, Olson Library. Mt. Pleasant: Central Michigan, University Library. Muskegon: Hackley Public Library. Petoskey: North Central Michigan College Library. Port Huron: Port Huron Public Library. Rochester: Oakland University Library. Saginaw : Hoyt Public Library. Traverse City. Northwestern Michigan College, Mark

Osterlin Library. University Center: Delta College Library.

Ypsilanti: Eastern Michigan University Library. MINNESOTA

Bemidji: Bemidji State College Library.

Collegeville: St. Johns University Library. Duluth : Duluth Public Library. Mankato: Mankato State College Library. Minneapolis

:

Public Library. University of Minnesota Library—REGIONAL.

Moorhead: State College Library.

Morris: University of Minnesota, Morris Library.

Northfield

:

Carleton College Library.

St. Olaf College Library.

St. Cloud: St. Cloud State College Library.

St. Paul: Minnesota Historical Society Library. Minnesota State Law Library.

St. Paul Public Library. Saint Peter: Gustavus Adolphus College Library.

Stillwater: Stillwater Public Library. Willmar: Kandiyohi County-Willmar Library. MISSISSIPPI

Columbus: Mississippi State College for Women, J. C. Fant Memorial Library. Hattiesburg: University of Southern Mississippi Library. Jackson:

Millsaps College, Millsaps-Wilson Library.

Mississippi Library Commission.

Mississippi State Library.

State College: Mississippi State University, Mitchell Memorial Library. University: University of Mississippi Library. MISSOURI

Cape Girardeau: Kent Library Southeast Missouri

State College. Columbia: University of Missouri Library. Fayette: Central Methodist College Library. Fulton: Westminster College Library. Hannibal: Free Public Library.

Jefferson City: Lincoln University Library. Missouri State Library. Missouri Supreme Court Library.

Joplin: Missouri Southern College Library. Kansas City: Kansas City Public Library. Rockhurst College Library. University of Kansas City Library.

Kirksville: Northeast Missouri State Teachers College Library.

Liberty: William Jewell College Library.

Rolla: School of Mines & Metallurgy Library.

St. Joseph : St. Joseph Public Library.

St. Louis:

St. Louis Public Library.

St. Louis University Library. University of Missouri at St. Louis Library. Washington University Libraries. Springfield: Drury College Library. Southwest Missouri State College Library. Warrensburg: Central Missouri State College Library. MONTANA

Billings: Eastern Montana College Library. Bozeman : Montana State College Library. Butte: Montana School of Mines Library. Helena: Historical Society of Montana Library. Missoula: State University of Montana Library—RE- GIONAL. NEBRASKA

Blair: Dana College Library.

Crete: Whitin Library of Doane College. Fremont: Midland College Library. Hastings: Hastings Public Library. Kearney: Nebraska State Teachers College Library. Lincoln

:

Nebraska State Library. University of Nebraska Libraries.
Omaha

Creighton University, Alumni Library. Municipal University of Omaha Library. Omaha Public Library.

Scottsbluff: Scottsbluff Public Library. NEVADA

Carson City: Nevada State Library. Las Vegas: University of Nevada, Southern Regional

Division Library. Reno: University of Nevada Library—REGIONAL. NEW HAMPSHIRE

Concord: New Hampshire State Library. Durham : University of New Hampshire Library. Hanover: Dartmouth College Library. Manchester

City Library.

St. Anselm's College, Geisel Library. NEW JERSEY

Atlantic City: Free Public Library. Bayonne: Free Public Library.

Bloomfield: Free Public Library. Camden : Camden Free Public Library. Convent Station: Santa Maria Library of College of

St. Elizabeth. East Orange: East Orange Public Library.

Elizabeth: Public Library. Glassboro: Glassboro State College, Savitz Library. Hackensack: Johnson Free Public Library. Jersey City: Free Public Library. Jersey City State College Library. Madison: Drew University, Rose Memorial Library. New Brunswick:

Free Public Library. Rutgers University Library. Newark: Public Library—REGIONAL.

Passaic: Passaic Public Library. Princeton: Princeton University Library. Rutherford: Fairleigh Dickinson University Library. South Orange: Seton Hall University Library. Teaneck: Fairleigh Dickinson University Library. Toms River: Ocean County College Library. Trenton

Division of State Library, Archives and History

Department of Education. Free Public Library. West Long Branch: Monmouth College, Guggenheim

Memorial Library. West New York: West New York Free Public Library. Woodbridge: The Free Public Library of Woodbridge. NEW MEXICO

Albuquerque: University of New Mexico. Las Vegas: New Mexico Highlands University, Rodgers Library.

Portales: Eastern New Mexico University Library. Santa Fe: New Mexico State Law Library. New Mexico State Library, State Library Extension Service—REGIONAL.

University Park: New Mexico State University

Library. NEW YORK

Albany: New York State Library—REGIONAL.

State University of New York at Albany Library. Binghamton: Harpur College Library. Brooklyn

Brooklyn College Library. Brooklyn Public Library. Polytechnic Institute Library. Pratt Institute Library.

State University of New York, Downstate Medical Center Library.

Buffalo: Buffalo and Erie County Public Library.

Buffalo and Erie County Public Library, Grosvenor

Reference Division. State University of New York at Buffalo, Lock- wood Memorial Library. Canton: St. Lawrence University Library. Corning: Corning Community College Library. Cortland: State University College Library. Elmira: Elmira College Library. Farmingdale: State University Agricultural and Technical Institute Library. Flushing: Queens College Library. Garden City: Adelphia University Library. Greenvale: C. W. Post College Library. Hamilton : Colgate University Library. Hempstead

Hofstra University Library. Nassau Library System.

Ithaca

Albert R. Mann Library, New York State Colleges

of Agriculture and Home Economics.

Cornell University Library Jamaica

Queens Borough Public Library.

St. Johns University Library. Kings Point: U.S. Merchant Marine Academy Library. Mount Vernon: Mount Vernon Public Library. New Paltz: State University College Library. New York City: College of the City New York LibraryCollege of Insurance Library. Columbia University Library. Cooper Union Library. Fordham University Library. New York Law Institute Library. New York Public Library (Astor Branch). New York Public Library (Lenox Branch) New York University, University Heights Library.

State University of New York, Maritime College Library. Newburgh: Newburgh Free Library. Oakdale: Adelphi Suffolk College Library. Oneonta: State University College Library. Oswego: State University College Library. Potsdam

Clarkson College of Technology Library.

State University College Library. Poughkeepsie : Vassar College Library. Rochester

Rochester Public Library. University of Rochester Library.

St. Bonaventure : St. Bonaventure College Library. Saratoga Springs: Skidmore College Library. Schenectady: Union College Library. Staten Island: Wagner College, Horrmann Library, Grymes Hill. Stony Brook: State University of New York Library. Syracuse: Syracuse University Library. Troy: Troy Public Library. Utica: Utica Public Library. West Point: U.S. Military Academy.

Yonkers: Yonkers Public Library. NORTH CAROLINA

Asheville: Asheville-Biltmore College Library. Boone: Appalachian State Teachers College, Dauphin

Disco Dougherty Memorial Library. Buies Creek: Campbell College, Carrie Rich Memorial

Library. Chapel Hill: University of North Carolina Library

REGIONAL.

Charlotte: Public Library of Charlotte & Mecklenburg Co. Queens College Library. University of North Caroline at Charlotte, Atkins

Library. X
Cullowhee: Western Carolina College Library. Davidson: Library of Davidson College. Durham: Duke University Library. Greensboro

:

Agricultural and Technical College Library. Univ. of N. Carolina at Greensboro, Walter Clinton Jackson Library.

Greenville: East Carolina College Library. Murfreesboro: Chowan College Library. Pembroke: Pembroke State College Library. Raleigh

:

D. H. Hill Library of North Carolina State College. North Carolina State Library.

Salisbury: Catawba College Library. Wilmington: Wilmington College Library. Wilson: Atlantic Christian College, Clarence L. Hardy

Library. Winston-Salem:

Public Library of Winston-Salem and Forsyth

County. Wake Forest College Library. NORTH DAKOTA

Bismarck

:

State Historical Library. State Law Library. Fargo

:

Fargo Public Library. North Dakota State University of Agriculture and

Applied Sciences Library. Grand Forks: University of North Dakota Library. Minot: State Teachers College Library. Richardton: Assumption Abbey Jr. College Library. Valley City: State Teachers College Library. OHIO

Ada: Ohio Northern University, J. P. Taggart Library. Akron

:

Akron Public Library. University of Akron Library.

Alliance: Mt. Union College Library. Ashland: Ashland College Library. Athens: Ohio University Library.

Bluffton : Musselman Library of Bluffton College. Bowling Green: Bowling Green State University

Library.

Cincinnati: Public Library of Cincinnati and Hamilton County.

University of Cincinnati Library. Cleveland

:

Cleveland Public Library. Cleveland State University Library. Freiberger Library of Western Reserve University. John Carroll University, Grasselli Library Columbus

:

Columbus Public Library. Ohio State Library—REGIONAL.

Ohio State University Library. Dayton

:

Dayton and Montgomery County Public Library. Miami University-Ohio State University, Dayton Campus Library. Delaware: Charles Slocum Library of Ohio Wesleyan

University. Elyria: Elyria Public Library. Gambier: Kenyon College Library.

Granville: Denison University Library. Hiram: Hiram College Library. Kent: Kent State University Library. Marietta: Marietta College Library. New Concord: Muskingum College Library.

Oberlin: Oberlin College Library. Oxford: Miami University Library. Portsmouth: Free Public Library.

Springfield : Warder Public Library.

Steubenville : Carnegie Library.

Tiffin : Heidelberg College Library. Toledo: Toledo Public Library. University of Toledo Library. Van Wert: Brumback Library of Van Wert County. Youngstown : Youngstown Public Library. Wooster: College of Wooster, Andrews Library. OKLAHOMA

Ada: East Central State Teachers College Library. Alva: Northwestern State Teachers College Library.

Bartlesville: Dept. of Interior, Region IV, Bur. of Mines Library. Durant: Southeastern State College Library. Edmond: Central State College, Max Chambers

Library. Enid: Public Library of Enid and Garfield Library. Langston : Langston University Library. Norman: University of Oklahoma Library. Oklahoma City: Oklahoma City University Library. Oklahoma State Library—REGIONAL.

Shawnee: Oklahoma Baptist University Library.

Stillwater: Oklahoma State University Library. Tahlequah: Northeastern State Teachers College Library. Tulsa:Tulsa City-County Library Commission.

University of Tulsa Library. Weatherford: Southwestern State College Library. OREGON

Ashland: Southern Oregon College of Education

Library.

Corvallis: Oregon State University Library. Eugene: University of Oregon Library. Forest Grove: Pacific University Library. La Grande: Eastern Oregon College Library. McMinnville: Linfield College, Northup Library. Portland

:

Dept. of Interior, Bonneville Power Admin.

Library. Library Association of Portland. Portland State College Library. Reed College Library. Salem: Oregon State Library. PENNSYLVANIA

Allentown: Muhlenberg College Library. Bethlehem: Lehigh University Library. Bradford : Carnegie Public Library.

Carlisle: Dickinson College Library.

Collegeville: Ursinus College Library. East Stroudsburg: East Stroudsburg State College. Erie: Erie Public Library.

Greenville: Thiel College, Langenheim Memorial

Library. Harrisburg: Pennsylvania State Library. Haverford: Haverford College Library. Hazleton: Hazleton Public Library. Huntingdon: Juniata College Library. Johnstown: Cambria Public Library. Indiana: Indiana State College Library. Lancaster: Franklin and Marshall College, Fackenthal

Library. Lewisburg: Bucknell University Library.

Meadville: Allegheny College Library.

Millersville: Millersville State College Library. New Castle: New Castle Free Public Library. Philadelphia: Drexel Institute of Technology Library. Free Library of Philadelphia. Temple University, Sullivan Memorial Library. University of Pennsylvania Library.
Pittsburgh

Allegheny Regional Branch Library. Carnegie Library of Pittsburgh. Dept. of Interior, Region V, Bur. of Mines Library. University of Pittsburgh Library. Reading: Reading Public Library. Scranton: Scranton Public Library. Slippery Rock: Slippery Rock State College Library. Swarthmore : Swarthmore College Library. University Park: Pennsylvania State University

Library. Villanova : Villanova University Law Library. Warren: Warren Library Association. Washington: Memorial Library of Washington and

Jefferson College. Waynesburg: Waynesburg College Library. Wilkes-Barre: Kings College Library. Williamsport: James V. Brown Library. York : York Junior College Library. PUERTO RICO

Mayaguez: University of Puerto Rico, College of Agriculture and Mechanical Arts Library. Rio Piedras: University of Puerto Rico General

Library. RHODE ISLAND

Kingston: University of Rhode Island Library. Newport: Naval War College Libraries. Providence

Brown University Library. Providence Public Library. Rhode Island College Library. Rhode Island State Library. Westerly: Westerly Public Library. SOUTH CAROLINA

Charleston

Charleston College Library. The Citadel Library. Clemson: Clemson College Library. Columbia: South Carolina State Library. University of South Carolina Library.

Greenville

Furman University Library.

Greenville County Library. Orangeburg: South Carolina State College Library. Rock Hill: Carnegie Library of Winthrop College. SOUTH DAKOTA

Aberdeen: Northern State Teachers College Library. Brookings: South Dakota State University, Lincoln Memorial Library.

Pierre: South Dakota State Library Commission. Rapid City: Rapid City Public Library. South Dakota School of Mines & Tech. Library. Sioux Falls: Carnegie Free Public Library.

Spearfish: Black Hills Teachers College Library. Vermillion: University of South Dakota Library. Yankton: Yankton College Library.

Memphis

Cossitt Reference Library. Memphis State University Library. Murfreesboro: Middle Tennessee State College Library.

Nashville: Fisk University Library.

Joint University Libraries. Nashville Public Library. State Library Division, Tennessee State Library and Archives. Sewanee : University of the South Library. TEXAS

Abilene: Hardin Simmons University Library. Arlington: Arlington State College Library. Austin: Texas State Library—REGIONAL.

University of Texas, Law Library. University of Texas Library. Beaumont : Lamar State College of Technology Library. Brownwood: Howard Payne College, Walker Memorial

Library. Canyon: West Texas State University Library.

College Station : Texas A & M University Library. Commerce : East Texas State College Library. Corsicana: Navarro Junior College Library.

Dallas: Bishop College, Zale Library. Dallas Public Library. Southern Methodist University Library. Denton: North Texas State University Library. Edinburg: Pan American College Library. El Paso: El Paso Public Library. University of Texas, Western College Library. Fort Worth:

Fort Worth Public Library. Texas Christian University Library. Galveston: Rosenberg Library. Houston: Houston Public Library. University of Houston Library.

Huntsville: Sam Houston State Teachers College,

Estill Library.

Kingsville: Texas College of Arts and Industries Library. Longview: Nicholson Memorial Library. Lubbock: Texas Technological College Library—RE- GIONAL.

Marshall: Wiley College, Carnegie Library. Nacogdoches: Stephen F. Austin State College Library. Plainview: Wayland Baptist College, Van Howeling

Memorial Library. San Angelo: San Angelo College Library. San Antonio:

Public Library, Business and Science Department.

St. Mary's University Library.

Trinity University Library. San Marcos: Southwest Texas State College Library. Sherman: Austin College, Arthur Hopkins Library. Texarkana: Texarkana College Library. Waco: Baylor University Library. Wichita Falls: Midwestern University Library. TENNESSEE

Chattanooga: Chattanooga Public Library.

Clarksville: Austin Peay State College Library. Columbia: Maury County Public Library.

Jefferson City: Carson-Newman College, Maples

Library. Johnson City: East Tennessee State University

Library. Knoxville: University of Tennessee Library. Martin: University of Tennessee Library—Martin

Branch.

UTAH

Cedar City: College of Southern Utah Library. Ephraim: Snow College Library. Logan: Utah State University of Agriculture and Applied Science Library—REGIONAL.

Ogden : Weber College Library. Provo: Brigham Young University Library.

Salt Lake City: University of Utah Library. Utah State Library.
VERMONT

Burlington: University of Vermont Library. Johnson: Johnson Teachers College Library.

Middteluirv: Middlebury College, Egbert Starr Library.

.Mont pelier: Vermont State Library.

Northfield: Norwich University Library. Putney: Windham College, Dorothy Culbertson Marvin

Library. VIRGINIA

Blacksburg: Virginia Polytechnic Institute Library. Bridgewater: Bridgewater College Library.

Charlottesville: University of Virginia Law Library. Emory: Emory and Henry College Library. Fairfax: George Mason College of the University of Virginia Library. Fredericksburg: Mary Washington College Library. Hampden Sidney: Hampden Sydney College Library. Lexington

:

Virginia Military Institute Library. Washington and Lee University Library. Norfolk: Armed Forces Staff College Library. Norfolk Public Library. Old Dominion College, Hughes Library. Petersburg: Virginia State College Library. Richmond: Virginia State Library. Roanoke: Roanoke Public Library. Salem: Roanoke College, Bittle Memorial Library. University: University of Virginia Library. Univ. of Richmond, P.O.: University of Richmond

Library- Williamsburg: William and Mary College Library. WASHINGTON

Bellingham: Western Washington State College Library. Cheney: Eastern Washington State College Library. Ellensburg: Central Washington State College Library. Everett: Everett Public Library. Olympia: Washington State Library—REGIONAL.

Port Angeles: Port Angeles Public Library. Pullman: Washington State University Library.

Seattle

:

Seattle Public Library. University of Washington Library. Spokane: Spokane Public Library. Tacoma:

University of Puget Sound Library. Tacoma Public Library. Vancouver: Fort Vancouver Regional Library. Walla Walla: Whitman College Library.

WEST VIRGINIA

Athens: Concord College Library. Charleston: Department of Archives and History, State Library. Kanawha County Public Library.

Elkins: Davis and Elkins College Library. Fairmont: Fairmont State College Library.

Glenville: Glenville State College Library. Huntington : Marshall University Library.

Institute: West Virginia State College Library. Morgantown: West Virginia University Library

REGIONAL.

Salem: Salem College Library. Weirton : Mary H. Weir Public Library. WISCONSIN

Appleton: Lawrence College Library.

Beloit: Beloit College Libraries. Eau Claire: Wisconsin State College, William D. Mclntyre Library. Fond du Lac: Fond du Lac Public Library. La Crosse:

Public Library. Wisconsin State University Library. Madison

:

Madison Public Library.

State Historical Society Library—REGIONAL.*

University of Wisconsin Library. Wisconsin State Library. Milwaukee: Milwaukee County Law Library. Milwaukee Public Library—REGIONAL.

Mount Mary College Library. Oklahoma Library. University of Wisconsin—Milwaukee Library. Oshkosh: Oshkosh State College Library.

Platteville: Wisconsin State College and Institute of Technology Karrmann Library. Racine: Racine Public Library. River Falls: Wisconsin State University, Chalmer

Davee Library. Stevens Point: Wisconsin State College Library. Superior: Superior Public Library. Wisconsin State College, Curran Library. Whitewater: Wisconsin State College, Harold Andersen Library. WYOMING

Casper: Natrona County Public Library. Cheyenne: Wyoming State Library. Laramie: University of Wyoming Library. Sheridan: Sheridan College, Mary Brown Kooi Library.

* In cooperation with University of Wisconsin at Madison.

1.5. FIELD OFFICES OF THE U.S. DEPARTMENT OF COMMERCE

Department of Commerce Field Offices are maintained in the cities listed below. Their purpose is to provide ready access, at the local level, to the Department's reports, publications, statistical statements, surveys, as well as to the specialized and experienced

staff in charge. Each Field Office serves as an official sales agent of the Superintendent

of Documents, U.S. Government Printing Office, making available for purchase locally a wide range of Government publications. The reference library maintained by each

Field Office contains many Government and private publications, periodicals, directories, reports, and other reference materials. ALBUQUERQUE, N. MEX. 87101

U.S. Courthouse

William E. Dwyer, Director Area Code 505 Tel. 247-0311 ANCHORAGE, ALASKA 99501

306 Loussac-Sogn Building Clyde S. Courtnage, Director Area Code 907 Tel. 272-6331 ATLANTA, GA. 30303

4th Floor, Home Savings Building

75 Forsyth Street, N.W.

Daniel M. Paul, Director Area Code 404 Tel. 526-6000 XIII
BALTIMORE, MD. 21202

305 U.S. Customhouse Gay and Lombard Streets

Carroll F. Hopkins, Director Area Code 301 Tel. Plaza 2-8460 BIRMINGHAM, ALA. 35205

Suite 200-201, 908 South 20th Street Gayle C. Shelton, Jr., Director Area Code 205 Tel. 325-3327 BOSTON, MASS. 02110 Room 230, 80 Federal Street Paul G. Carney, Director Area Code 617 Tel. CA 3-2312 BUFFALO, N. Y. 14203

504 Federal Building

117 Ellicott Street Robert F. Magee, Director Area Code 716 Tel. 842-3208 CHARLESTON, S. C. 29403

Federal Building—Suite 631 334 Meeting Street Paul Quattlebaum, Jr., Director Area Code 803 Tel. 747-4171 CHARLESTON, W. VA. 25301

3002 New Federal Office Building 500 Quarrier Street

J. Raymond DePaulo, Director Area Code 304 Tel. 343-6196 CHEYENNE, WYO. 82001 6022 Federal Building 2120 Capitol Avenue

Joseph D. Davis, Director Area Code 307 Tel. 634-5920 CHICAGO, ILL. 60604

1486 New Federal Building 219 South Dearborn Street Anthony J. Buchar, Director Area Code 312 Tel. 828-4400 CINCINNATI, OHIO 45202

8028 Federal Office Building 550 Main Street Robert M. Luckey, Director Area Code 513 Tel. 684-2944 CLEVELAND, OHIO 44101

4th Floor, Fed. Res. Bank Bldg. East 6th Street and Superior Avenue

Charles B. Stebbins, Director Area Code 216 Tel. 241-7900 DALLAS, TEX. 75202 Room 1200, 1114 Commerce Street Harry C. Meyers, Director Area Code 214 Tel Riverside 9-3287 DENVER, COLO. 80202

16407 Federal Building

20th and Stout Streets Charles E. Brokaw, Director Area Code 303 Tel. 297-3246 DES MOINES, IOWA 50309

1216 Paramount Building 509 Grand Avenue Raymond E. Eveland, Director Area Code 515 Tel. 284-4222

DETROIT, MICH. 48226

445 Federal Building Frank A. Alter, Director Area Code 313 Tel. 226-6088 GREENSBORO, N. C. 27402

412 U.S. Post Office Building

Joel B. New, Director Area Code 919 Tel. 275-9111 HARTFORD, CONN. 06103

18 Asylum Street James E. Kelley, Director Area Code 203 Tel. 244-3530 HONOLULU, HAWAII 96813

202 International Savings Building 1022 Bethel Street H. Tucker Gratz, Director

Tel. 588977 HOUSTON, TEX. 77002

5102 Federal Building 515 Rusk Avenue Edward T. Fecteau, Jr., Director Area Code 713 Tel. 228-0611 JACKSONVILLE, FLA. 32202

512 Greenleaf Building

208 Laura Street William B. Curry, Director Area Code 904 Tel. 354-7111 KANSAS CITY, MO. 64106 Room 2011, 911 Walnut Street Nathan L. Stein, Director Area Code 816 Tel. FR 4-3141 LOS ANGELES, CALIF. 90015 Room 450, Western Pacific Building 1031 South Broadway

Stanley K. Crook, Director Area Code 213 Tel. 688-2833 MEMPHIS, TENN. 38103

345 Federal Office Building

167 North Main Street John M. Fowler, Director Area Code 901 Tel. 534-3214 MIAMI, FLA. 33130

821 City National Bank Bldg.

25 W. Flagler Marion A. Leonard, Director Area Code 305 Tel. 350-5267 MILWAUKEE, WIS. 53203

Straus Building 238 West Wisconsin Avenue

David F. Howe, Director Area Code 414 Tel. BR 2-8600 MINNEAPOLIS, MINN. 55401 306 Federal Building

110 South Fourth Street Ernest G. Booth, Director Area Code 612 Tel. 334-2133 NEW ORLEANS, LA. 70130

909 Federal Office Building, South

610 South Street Edwin A. Leland, Jr., Director Area Code 504 Tel. 527-6546

NEW YORK, N. Y. 10001

61st Floor, Empire State Building 350 Fifth Avenue

Arthur C. Rutzen, Director Area Code 212 Tel. Longacre 3-3377 PHILADELPHIA, PENNA. 19107

Jefferson Building

1015 Chestnut Street David Jamieson, Director Area Code 215 Tel. 597-2850 PHOENIX, ARIZ. 85025

5413 New Federal Building 230 North First Avenue

Donald W. Fry, Director Area Code 602 Tel. 261-3285 PITTSBURGH, PENNA. 15222

2201 Federal Building 1000 Liberty Avenue

John A. Donley, Director Area Code 412 Tel. 644-2850 PORTLAND, ORE. 97204

217 Old U.S. Courthouse

520 S. W. Morrison Street James W. Goodsell, Director Area Code 503 Tel. 226-3361 RENO, NEV. 89502

2028 Federal Building 300 Booth Street Jack M. Howell, Director Area Code 702 Tel. 784-5203 RICHMOND, VA. 23240

2105 Federal Building 400 North 8th Street William S. Parker, Director Area Code 703 Tel. 649-3611 ST. LOUIS, MO. 63103

2511 Federal Building 1520 Market Street Alfred L. Rascher, Jr., Director Area Code 314 Tel. MA 2-4243 SALT LAKE CITY, UTAH, 84111

3235 Federal Building

125 South State Street Stephen P. Smoot, Director Area Code 801 Tel. 524-5116 SAN FRANCISCO. CALIF. 94102

Federal Building, Box 36013

450 Golden Gate Avenue

Philip M. Creighton, Director Area Code 415 Tel. 556-5864 SANTURCE, PUERTO RICO 00907 Room 628, 605 Condado Avenue

John H. Shoaf, Director Phone: 723-4640 SAVANNAH, GA. 31402

235 U.S. Courthouse and

Post Office Building

125-29 Bull Street James W. Mclntire, Director Area Code 912 Tel. 232-4321 SEATTLE, WASH. 98104

809 Federal Office Building

909 First Avenue

William H. Flood, Director Area Code 206 Tel. 583-5615 XIV
2. DESCRIPTION OF NBS PERIODICALS AND NONPERIODICALS

2.1. JOURNAL OF RESEARCH

The Journal of Research reports research and

development in physics, mathematics, chemistry, and engineering. Comprehensive scientific papers give complete details of the work, in- cluding laboratory data, experimental procedures, and theoretical and mathematical analyses. The Journal also presents review articles by recognized authorities and compilations of information on subjects closely related to the Bureau's technical program. The Journal of Research is issued in three separate sections as follows (see note below relative to former Section D) : A. PHYSICS AND CHEMISTRY

This section presents papers of interest pri- marily to scientists working in these fields. It covers a broad range of physical and chemical

research, with major emphasis on standards of physical measurement, fundamental constants, and properties of matter. Issued six times a

year.

B. MATHEMATICS AND MATHEMATICAL

PHYSICS

This section presents studies and compilations designed mainly for the mathematician and theoretical physicist. Topics in mathematical statistics, theory of experiment design, numerical analysis, theoretical physics and

chemistry, logical design and programing of computers and computer systems are covered, together with short numerical tables. Issued

quarterly.

C. ENGINEERING AND INSTRUMENTATION

This section reports results of interest chiefly to the engineer and the applied scientist. It includes many of the new developments in in- strumentation resulting from the Bureau's work in physical measurement, data processing, and development of test methods. It also covers some of the work in acoustics, applied mechanics, building research, and cryogenic engineering. Issued quarterly. RADIO SCIENCE (Formerly Section D, Radio

Propagation

This magazine reports research in radio propagation, communications, and upper at- mospheric physics. Topics covered include propagation in ionized media, scattering by

turbulence, effect of irregular terrain on propagation, diffraction and scattering by solid obstacles, propagation through time-varying

media, surface waves, and antennas. Issued monthly. Effective January 1966, this journal was transferred to the Environmental Science

Services Administration, Department of Commerce, Boulder, Colorado 80302. Annual subscription, $9 domestic, $11.50 foreign. Order

directly from Superintendent of Documents,

U. S. Government Printing Office, Washington,

D. C. 20402.

2.2. TECHNICAL NEWS BULLETIN

Reports results of Bureau's programs in measurement standards and techniques, properties of matter and materials, engineering stand- ards and services, instrumentation, and auto- matic data processing. The best single source of information con- cerning the Bureau's research, developmental,

cooperative and publication activities, this monthly publication is designed for the

industry-oriented individual whose daily work

involves intimate contact with science and tech- nology — for engineers, chemists, physicists, research managers, product-development managers, and company executives. Readers use the TNB to learn of new developments with practical applications, to fill in background, to get

ideas for further investigations, and for infor- mation on NBS calibration services and publications. Issued monthly.

2.3. CRPL IONOSPHERIC RADIO PREDICTIONS

(Formerly Basic Radio Propagation Predictions)

This is a monthly publication for those con- cerned with radio communication in determining the best sky-wave frequencies over any path

at any time of day for average conditions for

the month of prediction, which are made three months in advance. Charts of extraordinary- wave critical frequency for the F2 layer and of maximum usable frequency for a transmission

distance of 4,000 km, of highest frequency of sporadic-E in excess of 15 MC are included. In

addition, there are various maps, charts, dia- grams, and nomograms needed to make practical application of the world-contour charts, together with examples of their use. These PREDICTIONS are now issued by the Environ- mental Science Services Administration, De- partment of Commerce, Boulder, Colorado

80302. Annual subscription, $2.50 domestic,

$3.25 foreign. Order directly from the Superintendent of Documents, U. S. Government

Printing Office, Washington, D. C. 20402. XV
2.4. PERIODICAL SUBSCRIPTION RATES

Periodical Journal of Research of the National Bureau of Standards:

Section A. Physics and Chemistry, issued six times a year, paper covers Bound volume (1 volume per

year), blue buckram

Section B. Mathematics and

Mathematical Physics, issued

quarterly, paper covers Bound volume (1 volume per

year), green buckham

Section C. Engineering and In- strumentation, issued quarterly, paper covers Bound volume (1 volume per

year), salmon buckram Technical News Bulletin, 12 monthly issues ( 4

) NOTE.—Send order, with remittance, to Superintendent of Documents, U. S. Government Printing Office. Washington, D. C. 20402. 'United States and its possessions, Canada, Mexico, Newfoundland (including Laborador), and certain Central and South

2 Foreign price includes the cost of the publication and postage.

of the bound volumes vary. The Superintendent of

s will furnish prices on request, us monthly periodical may be obtained on a 1-, 2-, or 3-year

ription basis (although at no reduction in rates).

2.5. NONPERIODICALS

Nine categories of nonperiodical publications, as described below, are listed in this catalog

CIRCULARS—compilations on various subjects related to the Bureau's scientific and technical activities. The Circular series has been

discontinued, but several publications in this category are still in print, and hence are listed in this catalog. In general, material which

formerly would have been published in the Cir- cular series is now issued in the Monograph

series.

MONOGRAPHS—major contributions to the

technical literature on various subjects related

to the Bureau's scientific and technical activities. HANDBOOKS—recommended codes of engi- neering and industrial practice developed in cooperation with interested industries, professional organizations, and regulatory bodies. MISCELLANEOUS PUBLICATIONS—charts, annual reports of the Bureau, conference re- ports, bibliographies, and similar publications. APPLIED MATHEMATICS SERIES—mathematical tables, manuals, and studies. NATIONAL STANDARD REFERENCE

DATA SERIES—provides quantitative data on

the physical and chemical properties of materials, compiled from the world's literature and

critically evaluated. Developed under a world- wide program coordinated by NBS. BUILDING SCIENCE SERIES—research results, test methods, and performance criteria of building materials, components, systems, and

structures. COMMERCIAL STANDARDS—(see Product

standards, below) SIMPLIFIED PRACTICE RECOMMENDATIONS—(see Product standards, below) PRODUCT STANDARDS—developed cooperatively with interested Government and industry

groups, and used voluntarily. Product stand- ards have included Commercial standards (ma

terial requirements and quality criteria) and

Simplified Practice Recommendations (sizes, models, and dimensions of commonly stocked

items). When revised, these latter two will be- come Product Standards.

3. TITLES AND ABSTRACTS OF NBS PUBLICATIONS

The letter designations shown below are used

to indicate the various NBS publications. When ordering, or inquiring about, reprints from the Journal of Research, you should not

only use the J and A, B, C, or D shown below, but should also consult either the author or the

subject index (as appropriate) and use the volume-section-issue-paper-and-page number

symbol which you find there. For example, if you wish to order or inquire about "Perfluoro- phenyl Ether and Related Polymers", by Walter

J. Pummer and Leo A. Wall, you should use this

designation: J 68A3-274, 277 (1964). For an

explanation of the volume-section-issue-paper- and-page number symbol, see Table B on page

406.)

J, Journal of Research

A. Physics and Chemistry

B. Mathematics and Mathematical Physics

C. Engineering and Instrumentation

D. Radio Science (formerly Radio Propagation) *

* Published by Environmental Science Services Administration

since January 1966, following transfer of Central Radio Propagation Laboratory to that agency. XVI
When ordering or inquiring- about NBS nonperiodical publications, the letter designations shown below should be used, along with the

series number and title.

Prices of publications are listed on page 396. Other details about ordering, including infor- mation about reprints of material by NBS

authors and out-of-print material, are included

in that section.

C Circulars Mono Monographs H Handbooks M Miscellaneous Publications AMS Applied Mathematics Series NSRDS National Standard Reference Data

Series BSS Building Science Series CS Commercial Standards* SPR Simplified Practice Recommendations* TN Technical Notes (when ordering from

the Clearinghouse, use PB number

if indicated)

* Will become "Product Standards" when revised.

XVII

3.1. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SECTION

A. PHYSICS AND CHEMISTRY, VOLUME 64A, JULY- DECEMBER 1960July-August I960 Gamma irradiation of hexafluorobenzene, R. E. Florin, L. A. Wall, and D. W. Brown

Mixtures of hexafluorobenzene and benzene were irra- diated in liquid phase by means of a Co60 gamma source

at 20° and at 218° C. Perfluoroheptane and various

binary mixtures involving perfluoroheptane, hexafluoro- benzene, benzene, and cyclohexane were also irradiated

at 20° C. Hexafluorobenzene resembled benzene very

closely in its behavior upon radiolysis. Generally the fluorocarbon-hydrocarbon mixtures evolved much more

SiF4 (indicating the formation of HF, which reacts with

the glass vessel) than the pure fluorocarbon components. The polymer from hexafluorobenzene-benzene mixtures was probably rich in cyclohexadiene and cyclohexene

units, resembling that from pure benzene, and its composition ratio exhibited a strong "alternating" tendency. The results are discussed in terms of free-radical and

excited-state mechanisms. At 218° C hexafluorobenzene and also its mixtures with benzene showed qualitative differences from their behavior at 20° C, although the G

values for SiF4 and polymer remained moderate. 12 p. (Paper 64A4-49, p- 269). Behavior of isolated disturbances superimposed on laminar flow in a rectangular pipe, G. C. Sherlin An investigation was conducted in a horizontal trans- parent rectangular pipe to study the behavior, in laminar

flow, of an isolated turbulent-like disturbance produced

by injecting a quantity of dye into the pipe 39 reet from

the entrance. As the resulting mass of colored water moved downstream, time-distance measurements were made for the front of the dye mass and for the rear of the disturbance. The experimental setup, which is described

in some detail, permitted reasonable control over the mean flow rate from which Reynolds number was calculated. The utilization of the data unfolded a functional relationship among three quantities: The ratio of the

velocity of the rear of the disturbance to the velocity of the front of the dye Ur/Uf- the distance from the origin, XF; and the Reynolds number R. The similarity of this work to that being done by Lindgren in Stockholm is mentioned. 9 p. (Paper 64A4-50, p. 281). Standard of spectral radiance for the region of 0.25 to 2.6 microns, R. Stair, R.G.Johnston, and E. W. Halbach

This paper contains information relating to the setting, up of standard blackbodies for use through the temperature range of about 1,400° to 2,400° K and their use in the calibration of tungsten strip lamps as laboratory standards of spectral radiance for the wave-length region

of 0.25 to 2.6 microns. A graphite blackbody is described and representative data are given on the spectral characteristics of the new lamp standard as compared to black- bodies at several selected temperatures. 6 p. (Paper

64A4-51, p. 291).

Photovoltaic effect produced in silicon solar cells by

X- and gamma rays, K. Scharf The open-circuit voltage and photocurrent produced in a silicon solar cell by X- and gamma rays were measured

as a function of exposure dose rate, cell temperature, angle of incidence of radiation, and photon energy. This

photoresponse was stable and proportional to the exposure dose rate, which was applied up to a maximum of 1.8xl06 roentgen per minute for X-rays and 4xl0 2 roentgen per minute for Co60 gamma rays. At an exposure dose of 1 roentgen per minute the response was of the order of

10 -5 volt for the open-circuit voltage and 10 -8 ampere for the photocurrent. At high exposure dose rates of Co60 gamma rays, radiation damage became apparent. The

temperature dependence of the photoresponse was controlled by the temperature dependence of the cell resist- ance. The directional dependence of the photoresponse

varied with the quality of radiation and for Co60 gamma

rays was very small for angles from 0° to 70°. The

pliotoresponse decreased with increasing photon energy

but changed only little between 200 and 1,250 kilo electron volts. The ratio of the response to X-rays of 38

kilo electron volts effective energy and that to Co60 gamma rays was approximately 6:1. An approximate value

of the thickness of the effective p—n junction layer is deduced from the energy dependence. 11 p. (Paper

64A4-52, p. 297) Phase equilibria in systems involving the rare-earth oxides. Part I. Polymorphism of the oxides of the

trivalent rare-earth ions, R. S. Roth and S. J. Schneider The polymorphic relationships of the pure rare-earth oxides have been reinvestigated using X-ray diffraction methods for identification of phases. The oxides of the

trivalent rare earth ions crystallize in three different types: A, B, and C. Each oxide has only one truly stable polymorph: La2 03 , Ce2 03 , Pr2 03

, and Nd2 03 belong to the A type; Sm2 03 , Eu203

, and Gd2 03 to the B type; Tb2 03> Dy2 03 , Ho 20, Er2 03 , Tm2 03 , Yb2 03

, and Lu203 to the C

type. In addition Nd2 03 , Sm2 03 , Eu2 03

, and Gd2 03 have

low-temperature, apparently metastable, C-type poly- morphs. The low-temperature form inverts irreversibly to the stable form at increasingly higher temperatures for de- creasing cation radius. 8 p. (Paper 64A4-53, p- 309). Phase equilibria in systems involving the rare-earth oxides. Part II. Solid state reactions in trivalent rare- earth oxide systems, S. J. Schneider and R. S. Roth

Selected mixtures in 21 binary and 9 ternary rare-earth oxide systems were studied by X-ray diffraction after heat treatment at 1,650° C and above. Two graphs were drawn to show specific regions of stability for the various

structure types. Each gives the average ionic radius of constituent cations versus the mole percent of the smaller

cation. One diagram is essentially divided into areas

of solid solution of the A, B, and C rare-earth oxide

structure types. The other indicates a field of perovskitetype compounds bordered by regions of A, B, or C solid solutions. These diagrams were used to predict the subsolidus phase diagrams of a number of systems. A

total of forty-one subsolidus binary and one ternary rare- earth oxide systems were given. A tolerance factor equal

to 0.77 was assigned as the minimum value for the formation of a perovskite-type compound. 16 p. (Paper 64A4-

54, p. 317).

1
Some observations on the calcium aluminate carbonate

hydrates, E. T. Carlson and H. A. Berman Two calcium aluminate carbonate hydrates, previously

reported in the literature, were prepared and various

properties determined. The compound 3CaOAl2 03 -CaC0 3

- HHjO, was prepared by precipitation from mixtures of solutions of calcium aluminate, calcium hydroxide and

sodium carbonate; and, in less pure form, by several

other means. It forms thin hexagonal plates having

refractive indices 1.532 and 1.554. From X-ray diffraction, cell parameters, calculated on the assumption of hexagonal symmetry, are a= 8.716, c= 7.565. On continued exposure to atmospheric carbon dioxide it is decomposed to calcium carbonate and hydrated alumina. The compound 3CaO- Al2Gy 3CaC03 -32H2 0, was pre- pared by precipitation from mixtures of ammonium bi- carbonate, calcium aluminate, and calcium hydroxide in aqueous sucrose solution. It crystallized as spherulites

of minute needles. Other methods produced individual

crystals, some tubular, but only in minute quantities or mixed with other phases. X-ray diffraction indicates isomorphism with 3CaO-Al2 Gy3CaSGy 32H2 0. 3CaO

Al2 03 -3CaCGy 32H2 0 is, in general, less stable than the monocarbonate complex. The needle-form "silicoaluminate" reported by Flint and Wells was re-examined. It was concluded that the phase probably contains C02 as well as Si02

, but the exact composition is in doubt. 9 p. (Paper 64A4-55,

p. 333). Acid dissociation constant and related thermodynamic

quantities for triethanolammonium ion in water from

0 to 50 °C, R. G. Bates and G. F. Allen

Earlier studies of the dissociation constants of mono- ethanolammonium and diethanolammonium ions and the thermodynamic constants for the dissociation processes have been supplemented by a similar study of triethanol- ammonium ion from 0° to 50° C. The dissociation constant (K bh ) is given by the formula -log K bh = 1341. 16/T+ 4.6252-0. 0045666T

where T is in degrees Kelvin. The order of acidic strengths of the ions is as follows: Triethanolammonium

>diethanolamraonium>monethanol ammonium. Conversely, monoethanolamine is the strongest of the three bases. The thermodynamic constants for the dissociation of one mole of triethanolammonium ion in the standard state at 25° C are as follows: Heat content change (Atf°), 33,450

joule mole-1

; entrophy change (AS°), -36.4 joule deg

-1 mole -1

; heat-capacity change (AC°), 52 joule deg -1 mole-1

. 4 p. (Paper 64A4-56, p. 343). Ionization constants of four dinitrophenols in water at 25 °C, R. A. Robinson, M. M. Davis, M. Paabo, and

V. E. Bower

Thermodynamic ionization constants of 2,3", 2,5",

3,4-, and 3, 5-dinitrophenols in aqueous solution at 25° C

have been determined by a spectrophotometric method. The respective values found, expressed as pK, are

4.95,, 5.210 , 5.42,, and 6.692

. pK has also been deter- mined potentiometrically for 2,3- and 3, 5-dinitrophenols;

the respective values obtained are 4.98 and 6.66. The

experimental pK values for all six dinitrophenols are

lower than the calculated values based on pK data for phenol and the mononitrophenols.

Spectral absorption curves are presented for the ion- ized and unionized forms of the four dinitrophenols. 4 p. (Paper 64A4-57, p. 347). Dissociation constant of anisic (p-methoxybenzoic) acid

in the system ethanol-water at 25 °C, E. E. Sager and

V. E. Bower The dissociation constant of anisic (p-methoxybenzoic)

acid in the system ethanol-water was measured at 25° C

by a combination of spectrophotometric and electrometric methods. Percentage by weight of ethanol in the solvent system varied from zero to 83.43- The value of K varied correspondingly from 3.22 x 10

s (pK= 4.492) to 3.34x 10"8 (PK = 7.476). 4 p. (Paper 64A4-58, p. 351). Preparation of sulfur of high purity, T. J. Murphy, W. S. Clabaugh, and R. Gilchrist A method is described for producing sulfur that contains less than 1.3xl0~5 mole fraction of liquid-soluble, solid-insoluble impurities as determined by the freezing

point depression. This corresponds to a purity of 99-999 mole percent. Many of the impurities, including organic

matter, are removed by oxidation with sulfuric and nitric acids. The nonvolatile impurities are removed on distilling the sulfur. The residual sulfuric acid is removed

by a special extraction with distilled water. Methods are described for determining small amounts

of the following impurities: Selenium, tellurium, arsenic,

iron, carbon, sulfuric acid, and residue after ignition. 4 p. (Paper 64A4-59, p- 355). Tritium-labeled compounds IV. D-glucose-6-^, D-xylose5-t, and D-mannitol-M, H. S. Isbell, H. L. Frush, and

J. D. Moyer

Methods are presented for the preparation of D-glucose6-t, D-xylose-5-<, and D-mannitol-i-r by the reduction of

suitable compounds with lithium borohydride-J in anhydrous tetrahydrofuran, followed by hydrolysis of the products. The starting materials for the reductions are, respectively, l,2-0-isopropylidene-D-glucurono-6, 3-lac- tone, 5-aIdo-l,2-0-isopropylidene-D-xy/o-pentofuranose, and 2, 3: 5,6-di-O-isopropylidene-D-mannofuranose. The

apparatus and procedure for carrying out the reductions

in a closed system are described. 4 p. (Paper 64A4-60,

P. 359). Tritium-labeled compounds V. Radioassay of both carbon- 14 and tritium in films, with a proportional counter, H. S. Isbell, H. L. Frush, and N. B. Holt A convenient procedure is described for the radioassay

of both carbon-14 and tritium in water-soluble, nonvolatile compounds by means of a windowless, gas-flow,

proportional counter. The materials are counted in uniform

films of sodium O-(carboxymethyl) cellulose that are

"infinitely thick" to the radiation of tritium but not to the radiation of carbon-14. Films of uniform thickness

are obtained by new techniques which are described in detail.

If only carbon-14 is present, its absolute activity can

be calculated conveniently by means of an empirically
established curve for the counting-efficiency. If both carbon-14 and tritium are present, the films are counted

in the proportional counter and are then recounted in the presence of a screen that stops all radiation from tritium but only a portion of that from carbon-14. From a film with a thickness of 0.8 rag/cm2

, approximately 43 percent

of the radiation of carbon-14 is counted. Of this emerging radiation, approximately 50 percent passes through a screen of 1/4-mil double-aluminized "Mylar." By use of

suitable calibration curves for counting-efficiency, carbon-14 and tritium in the same sample can be calculated from the counts with, and without, the screen. Satisfactory analyses can be made with samples containing less than 0.001 microcurie of carbon-14 and 0.005

microcurie of tritium. The method is suitable for the radioassay of a wide variety of labeled materials. 5 p. (Paper 64A4-61, p. 363). September-October 1960 Infrared spectrum of hydrobromic acid, E. K. Plyler A precise measurement of the infrared fundamental bands of HBr79 and HBr81 has been made. The two band

centers have been found to be 2,558.94 and 2,558.56 cm

-1

, respectively. Rotational and vibrational constants have been calculated from the observed data. The constants are in good agreement with previous reported

values. The centers of the two harmonic bands were

used to calculate o> e* e and a> ey e and they were found to be 45.58 and 0.072 cm

-1

, respectively, for HBr79 and

45.56 and 0.072 cm"1 for HBr81

. 3 p. (Paper 64A5-62,

p. 377).

Determination of the value of the faraday with a silver- perchloric acid coulometer, D. N. Craig, J. I. Hoffman,

C. A. Law, and W. J. Hamer

An accurate value of the faraday has been determined

by the electrolytic dissolution of metallic silver in aque- ous solutions of perchloric acid. Standards of electric

current, mass, and time as maintained by the National Bureau of Standards were utilized in the determinations. The electric current was measured in terms of the stand- ards of electromotive force and electrical resistance.

Silver of high purity, freed from oxygen, was used. The value of the faraday was found to be

faraday = 96516 ±2.4 coulombs gram-equivalent

-1 (physical scale), faraday = 96490. 0±2. 4 coulombs gram-equivalent -1 (chemical scale). These values were obtained using 107.9029 ±0.0013 and

107.8731 ±0.0013, for the atomic weight of silver on the physical and chemical scales, respectively. The electrochemical equivalent of silver was found

to be

electrochemical equivalent of silver= 1. 1 17972

0.000019 milligram coulomb -1

. This value may be used in an alternate method of defin- ing the ampere in absolute value, namely, that steady

current which will dissolve 1.117972 milligrams of silver per second and depends only on the standards of mass

and time. The indicated uncertainties are overall limits of error based on 95 percent confidence limits for the mean and allowances for the effects of known sources of possible systematic error. 22 p. (Paper 64A5-63, p. 381). Systems silver iodide-sodium iodide and silver iodide- potassium iodide, G. Burley and H. E. Kissinger The phase relations for the systems Agl-Nal and Agl- KI have been determined for the temperature range from room temperature to 685° C, using differential thermal analysis techniques. The Agl-Nal system has a eutectic

at 50 mole percent Nal and 384° C. The Agl-KI system

has eutectics at 20.8 and 28.5 mole percent KI and 254° C and 244° C, respectively. A compound of formula KAg3 I4 is formed with a congruent melting point of 268°

C. 24 p. (Paper 64A5-64, p. 403). Conformations of the pyranoid sugars. III. Infrared ab- sorption spectra of some acetylated aldopyranosides,

R. S. Tipson and H. S. Isbell The infrared absorption spectra of twenty-four acetylated aldopyranosides in the range of 5,000 to 250 cm

-1 are reported. The conformation adopted by each of seventeen of the corresponding unacetylated glycosides had

previously been assigned by us from a study of their infrared spectra. Analysis of the spectra revealed, for the acetylated glycosides (as for the parent glycosides), groups of absorption bands which showed a concerted

shift on change of anomeric disposition. Assignment of conformation by the methods developed earlier led to the conclusion that each acetylated glycoside has the same

conformation as its parent glycoside. Intercomparison of the spectra of four of the remaining

acetates with those of related acetates, especially in regard to the characteristic groups of absorption bands,

afforded evidence that the anomeric methoxyl group is axial in methyl hepta-0-acetyl-4-0-£!-D-glucopyranosyl-a- D-mannopyranoside, and equatorial in methyl tetra-O-ace- tyl-/3-D-mannopyranoside, methyl penta-O-acetyl-D-g/ycero-|Q-L-tfW2rco-heptopyranoside, and methyl hepta-O-acetyl-4-0-/3-D-glucopyranosyl-/3-D-mannopyranoside. For

lack of spectra of related acetylated aldopyranosides, assignments cannot yet be made for methyl hepta-O-acetyl-6-0-/3-D-glucopyranosyl-/3-D-glucopyranoside, methyl

penta-O-acetyl-D-g/ycero-jS-D-^o-heptopyranoside, and

methyl hepta-0-acetyl-4-0-/3-D-galactopyranosyl-/3-D-altropyranoside. 22 p. (Paper 64A5-65, p. 405). Dissociation constant of 4-aminopyridinium ion in water

from 0 to 50 °C and related thermodynamic quantities,

R. G. Bates and H. B. Hetzer The dissociation constant of 4-aminopyridinium ion in water at 11 temperatures from 0° to 50° C has been de- termined from electromotive force measurements of 19 approximately equimolal aqueous buffer solutions of 4-aminopyridine and 4-aminopyridinium chloride. Cells

without liquid junction were used; the cell is represented

as follows:

Pt; H2 (g), H^Q^N-HCl^), HjNQ H4 N(w2 ), AgCl; Ag

where m is molality. 3
Between 0° and 50° C, the dissociation constant ( Kbh)

is given as a function of temperature (T) in degrees Kelvin by

2575.8 Kbh= ~+0.08277 + 0. 0013093T The changes of Gibbs free energy (AG°), of enthalpy

(Atf°), of entropy (AS0

), and of heat capacity (AC°) for the dissociation process in the standard state were cal- culated from the constants of this equation. At 25° C

the following values were found; -log K bh = 9.1i4, AG°= 52,013 j mole -1

, AW°= 47,090 j mole -1

, AS°=-l6.5 j deg -1 mole-1

, AC°=-15 j deg

-1 mole-1

. Thermodynamic constants for the basic dissociation of 4-aminopyridine at 25° C were also computed. 6 p. (Paper 64A5-66, p. 427). Tritium-labeled compounds VI. Alditols-J-r and Alditols2-t, H. L. Frush, H. S. Isbell, and A. J. Fatiadi By reduction of aldoses and aldonic lactones with

lithium borohydride-?, the following 1-tritium-labeled

alditols were prepared: D-arabinitol-i-r, D-lyxitol-]-£,

D-ribitol-]-/, D-xylitol-]-/, D-galactitol-I-J, D-mannitoll(6)-t, D-glucitol-i-z, D-talitol-J-r, L-gulitol-2-J (D-glucitol 6-0. L-rhamnitol-l-r, D-g/ycero-D-gw/o-heptitol-]-r, and 4-0-/3-D-galactopyranosyl-D-glucitol-i- 1. By reducof ketoses with lithium borohydride-f, the following epimeric pairs of 2-labeled alditols were prepared and

subsequently separated: D-mannitol-2(5>* and D-glucitol-2-/; L-gulitol-2-? (D-glucitol-5-fJ and L-iditol-2-/; D-galactitol-2-i and D-talitol-2-r; D-glycero-D-guloheptitol-2-? and D-g/ycero-D-z'<io-heptitol-2-i; and Dg/ycero-D-ga/ezcro-heptitol-2-/ and D-glycero-D-taloheptitol-2-r. The yields of the epimeric alditols formed from ketoses were determined by an isotope-dilution technique. Ster- eomeric relationships are discussed for the labeled aldi- tols and for the ketoses derivable from them by oxidation

with Aceiobacter suboxydans. 4 p. (Paper 64A5-67,

p. 433). November -December 1960 The spectrum of singly ionized atomic iodine (I II), W. C. Martin and C. H. Corliss The I II spectrum has been excited in electrodeless lamps and photographed from 655 A to 11084 A. Wavelengths and estimated intensities are given for almost

2,400 lines. A revision and extension of the earlier analyses of this spectrum has increased the number of known even levels from 43 to 124, and the number of odd

levels from 55 to 190. New g^-factors are given for 46

levels, and the previous designation of 40 levels are changed. Improved measurements in the vacuum ultra- violet region give a correction of 7.4 cm

-

to be subtracted from the values listed in Atomic Energy Levels,

Vol. 3 (1958), for all levels above the ground configuration. The approximately 1,800 classified lines now in- clude all of the strongest lines. The 1 50 of the ground

configuration 5s 25p

4 has been found, and this configuration has been fitted to intermediate coupling theory. Magnetic dipole transitions between levels of the ground

configuration, 3P2 —l Da (7282 A) and 3 P,_l S0 (4460 A), have been observed and their nature confirmed by the Zeeman effect. The line 5p* 3 P2 —'D, shows hyperfine

structure which is in approximate agreement with a theoretical calculation of the expected structure. New levels have been found for almost all higher configurations.

All previously known series have been extended and new

ones found. From one of the new series, 5p

3( 4 S°)5- 12g

s G°, the principal ionization energy for I II (154304 ±1 cm

-1

) has been derived. The results of the analysis

are compared with theoretical expectations in a number

.of cases. 43 P- (Paper 64A6-68, p. 443). The third spectrum of gold (Au III), L. Iglesias The spark spectrum of gold has been photographed in a helium atmosphere from 500 A to 6600 A. About 500

lines have been assigned to the third spectrum, Au m,

and separated from those belonging to different stages of ionization, by observation of the polarity of the lines. Sixty two levels have been found": 17 even levels, aris- ing from the 3d9 and 5<^ 6s configurations; and 45 odd

levels, belonging to the 5^8 6p and 3d1 6s 6p configurations. All of the expected levels from the configurations 3d9

, 3d" 6s and 5d* 6p have been identified except for the very high terms based on the 5^*( l S) core of Au IV. With, these levels it was possible to classify 256 lines. 5 p. (Paper 64A6-69, p. 481). Tolerances for layer thicknesses in dielectric multilayer coatings and interference filters, K. D. Mielenz A theory is developed for dielectric multilayer coat- ings in which the layers depart from calculated thickness. The theory is applied to alternating systems of quarter wave layers of ZnS and MgF2

. The effects of thickness

errors are: (1) A shift of the wavelength at which maxi- mum reflectance occurs; and (2) a change in phase shift

• upon reflection. The magnitude of these effects, and

also their dependence on various parameters, are deter- mined. Statistical tolerances for layer thicknesses are computed for given tolerances on the multilayer perform- ance. The accuracy required for producing dielectric interference filters is up to about 40 times higher than

the accuracy sufficient for the production of dielectric mirrors and beam splitters. Various techniques of experi- mentally controlling film thicknesses, and their accuracies, are discussed. The production of mirrors and beam splitters deviating from theoretical maximum re- flectance by only 1 percent seems to be possible with Dufour's simple single photocell method of monitoring

film thicknesses. With more precise methods, such as

those developed by Giacomo and Jacquinot, or Traub, the production of interference filters appears to be possible

to within plus or minus one half their half widths. 9 p. (Paper 64A6-70, p. 487). Note on particle velocity in collisions between liquid drops and solids, O. G. Engel

Equations are developed for plane-wave particle velocity produced in solid-against-liquid collisions. An
explicit expression for the dimensionless coefficient a that appears in these equations is deduced. 2 p. (Paper

64A6-71, p. 497).

Resistance of white sapphire and hot-pressed alumina

to collision with liquid drops, O. G. Engel Fused alumina has been reported to be one of the most

promising materials for resistance to erosion due to high- speed collision with liquid drops. In this paper, data are presented that showthe resistance of 0.318-cm (0.125-in.)

-thick plates of white sapphire and hot-pressed alumina

to impingement damage by 0.2-cm-diam waterdrops and

mercury drops. The type of damage done to these high- strength ceramics as a result of collision with a mercury

drop at high velocity was found to be qualitatively the same as that produced on low-strength plastics as a

result of collision with a waterdrop at relatively low

velocity.

In collision with mercury drops, the velocity at which damage was first observed was 3.514x 10

4 cm/sec (1,153

ft/sec) for white sapphire and 4.276x 10

4 cm/sec (1,403

ft/sec) for hot-pressed alumina; the difference in the

velocities found for the two ceramics is not considered

to be significant. The velocity required to damage these ceramic materials on collision with a waterdrop was not reached

experimentally. A theoretical extrapolation suggests

that plates of these ceramics of the indicated thickness can be expected to survive collision with a 0. 2-cm waterdrop without damage up to a velocity of 33.7 x 10

4 cm/sec

(11,100 ft/sec). For air at 0 °C, this is equivalent to a Mach Number of 10. 14 p. (Paper 64A6-72, p. 499).

Note on the thermal degradation of polytetrafluoro- ethylene as a first-order reaction, S. L. Madorsky and

S. Straus Additional experiments on the rates of thermal degradation of polytetrafluoroethylene in a vacuum confirm an

earlier conclusion that a first-order rate law is involved

in the degradation reaction. 2 p. (Paper 64A6-73, p. 513).

Heat of formation of titanium trichloride, W. H. Johnson,

A. A. Gilliland, and E. J. Pros en A calorimetric comparison of the heat of hydrolysis of TiCl4 (liq) with the heat of oxidation and hydrolysis of TiCl3 (c) has been made. The" following value is reported

for the combination of these data according to the procTiCl3 (c) + ^I2 (c) + HCl(grTiCl4(liq) + HI(g), AH°(25 °C)=8.37 ±0.30 kcal/mole. A combination of this value with -192.3 ±0.7 kcal/mole

for the heat of formation of TiCl4 (liq) and with the stand- ard heats of formation of HCl(g) and HI(g) gives for TiCl3 (c), AHf°(25 °C)=- 172.4 ±0.8 kcal/mole. 5 p. (Paper 64A6-74, p. 515).

Heat of formation of decaborane, W. H. Johnson, M. V. Kilday, and E. J. Prosen The heat of formation of crystalline decaborane has

been determined by calorimetric measurement of the heat

of decomposition: B l0H 14(c)— 10B(am) + 7H2 (g), AH(25 °C) = 82.8±5.9

kj/mole, (19.8 ±1.4 kcal/mole).

With the heat of transition of crystalline to amorphous

boron taken as 0.40 kcal/mole, we obtain for the heat of formation of decaborane: AHf?98 . 15 =-66.1 kj/mole, (-15.8 kcal/mole).

5 p. (Paper 64A6-75, p. 521). Ultra low-conductivity water by electrophoretic ion ex- clusion, W. Haller and H. C. Duecker

Ultra low-conductivity water has been prepared by

'recirculating it through an electric field of 1,000 volts/ centimeter maintained between two ion selective membranes. It was possible to obtain consistently water

with an electrical conductivity below the lowest values

reported in the literature. The lowest conductivity value which could be reached was 0. 039x 10"* ohm -1 cm

-1 at 18 °C, indicating an ionic impurity content of only one

third of the minimum previously reported. This corre- sponds to the conductivity of a sodium chloride solution

at a concentration of 0.0010 parts per million. 4 p. (Paper 64A6-76, p. 527). Spectrophotometric determination of the ionization constant of dimethylpicric acid (2,4,6-trinitro-3,5-xylenol)

in water at 25 °C, M. M. Davis, M. Paabo, and R. A. Robinson The ionization constant of dimethylpicric acid (2,4,6-

trinitro-3,5-xylenol) in water at 25 °C has been deter- mined by a spectrophotometric method. The pK value

1. 38 (K> 0.042) was obtained. Potentiometric titrations, although less precise, yielded a pK value of the same

magnitude. 2 p. (Paper 64A6-77, p. 531). Spectrophotometric determination of the ionization constant of 2,4,6-trinitro-w-cresol in water at 25 °C,

M. M. Davis and M. Paabo The ionization constant of 2,4,6-trinitro-w-cresol in water at 25 °C was determined by a spectrophotometric

procedure. The pK value 0.81 (K = 0.16) was obtained.

2 p. (Paper 64A6-78, p. 533). Method for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination, T.J. Murphy, W. S. Clabaugh, and R. Gilchrist A method is described for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination. Iron is first precipitated with l-nitroso-2-naphthol after complexing the titanium and zirconium with citrate to prevent their precipitation. 5
Titanium and zirconium are then collectively precipitated with cupferron and subsequently separated from each

other by precipitating the titanium with 8-hydrozyquinoline after complexing the zirconium with ethylene- diaminetetraacetic acid. Aluminum and zirconium are recovered from their respective solutions by precipitation with cupferron. The accuracy of the method was proved by analyzing

synthetic solutions containing known amounts of the four elements. 8 p. (Paper 64A6-79, p. 535). TITLE PAGE AND CONTENTS TO VOL. 64A. 5 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION A. PHYSICS AND CHEMISTRY, VOLUME 65A, JANUARY- DECEMBER 1961

January-February 1961 Faint lines in the arc spectrum of iron (Fe /), C. C. Kiess, V. C. Rubin, and C. E. Moore A search for new faint iron lines has been made on spectrograms taken with an arc-in-air as source. The

range of observations is from 2102 to 8679 A. The

reciprocal dispersion of the spectrographs used for the various spectral regions varies from 1 A/mm to 3A/mm.

Twelve new energy levels have been found, resulting

in a total of 121 classified lines. A table containing 698 classified lines includes many lines whose wavelengths had been predicted as combinations among the known energy levels, and found in the solar spectrum

in earlier work. Their reality has been confirmed in the present work. A list containing 1,102 newly measured unclassified

lines is included. Many of the lines listed in the tables have been reported by other observers with varying degrees of accuracy. All such reference sources are indicated in the tables. As a result of the new measurements, these lines may safely be attributed to Fe I. A comparison of the new lines with the solar spectrum has resulted in the identification of 306 solar lines of Fe I unblended, and of 85 as blends to which Fe I is a contributor. 29 P- (Paper 65A1-80, p. 1).

Infrared absorption spectra of some 1-acetamido pyranoid

derivatives and reducing, acetylated pyranoses, R.

S. Tipson and H. S. Isabell The infrared absorption spectra of five /V-glyco- pyranosylacetamides and of six acetate esters thereof

are presented, together with the spectra of five related compounds, for the range of 5000 to 250 cm

-1

. Analysis

of the spectra permitted assignment of characteristic group-frequencies. For comparison, the spectra of eight reducing, pyra- nose acetates are also given. The general effect (on

the spectra) of changing the anomeric group from hydroxyl to (a) acetamido and (b) methoxyl, when all (other) hydroxyl groups are acetylated, is pointed out. 20 p. (Paper 65A1-81, p. 3D.

Monolayers of linear saturated succinate polyesters at air-liquid interfaces, W. M. Lee, J. L. Shereshefsky, and R. R. Stromberg The surface pressure-area isotherms at 25 °C are are reported for some linear saturated polyesters spread

as monolayers at air-aqueous interfaces. Monolayers

of poly(ethylene succinate), poly(pentamethylene succinate) and poly(neopentyl succinate were studied on

distilled water and 0.01 N hydrochloric acid subphases.

Poly(ethylene succinate) monolayers are in the ex- panded state and collapse at low surface pressures. Poly(pentamethylene succinate) monolayers are also expanded, but show no definite collapse, even at the highest surface pressures studies. Monolayers of poly (neopentyl succinate) collapse at high surface pressures, and are less expanded, over the entire surface pressure range studied, than the monolayers of the other polymers

studied. The specific area for each polymer and the

effect of structure on the surface pressure-area isotherms

of poly(pentamethylene succinate) and poly(neopentyl

succinate) are discussed. 7 p. (Paper 65A1-82, p. 51). Heat of formation of beryllium chloride, W. H. Johnson

and A. A. Gilliland The heat of formation of beryllium chloride has been

determined, by the direct combination of the elements in a calorimeter, according to the process, Be(c) + Cl2(g) = BeCl2 (c), AH° (25 °C) = -493.85 ±2.35 kj/mole, = -118.03 ±0.56 kcal/mole. The data obtained by other investigators are discussed

briefly. 3 p. (Paper 65A1-83, p. 59). Heat of decomposition of potassium perchlorate, W. H. Johnson and A. A. Gilliland The heat of decomposition of potassium perchlorate

into potassium chloride and oxygen has been determined

in a bomb calorimeter. The process may be represented

by the equation:KCI04 (c) = KCl(c) + 202 (g), AH°(25°C) = -4.02 ±0.34 kj/mole, = -0.96 ±0.08 kcal/mole. Combination of this datum with the heat of formation

of KCl(c) gives - 103.22 ±0.15 kcal/mole for the standard

heat of formation of KC1G\, (c) at 25 °C. 3 p. (Paper.

65 Al-84, p. 63).

Heats of formation of lithium perchlorate, ammonium

perchlorate, and sodium perchlorate, A. A. Gilliland and W. H. Johnson

Calorimetric measurements of the heats of solution

of LiCI04 (c), NH4 CI04 (c), and NaCIO„(c) have been made. The results have been combined with the heats 6
of formation of KC104(c), KCl(c), LiCl(c), NH4 Cl(c), and

NaCl(c), to obtain the following heats of formation: LiC104

(c), AHf°(25 °C)=- 380.27 ±1.21 kj/mole = -90.89 ±0.29 kcal/mole, NH4 CI04 (c), =-295.98 ±1.35 kj/mole = -70.74 ±0.32 kcal/mole, NaC104 (c), =-382.75 ±0.93 kj/mole

= -91.48 ±0.22 kcal/mole. A brief summary of other recent data has been included.

4 p. (Paper 65A1-85, p. 66).

Heat of formation of /V-dimethylaminodiborane, W. H. Johnson, I. Jaffee, and E. J. Prosen The heat of reaction of /V-dimethylaminodiborane with water has been determined according to the reaction; (CH1 ) 1 NB1 H,(g)+6HJ 0'liq) = (CH,)a NH(g)+2H1 BOs (c) + 5H2(g), AH(25°C) = - 374.99 ±2.71 kj/mole = -89.62 ±0.65 kcal/mole. A combination of this value with the heat of vaporization, and with the heats of formation of boric acid, di- me L-./lamine, and water gives for liquid /V-dimethylaminodiborane: AHf°(25 °C) = - 36.22 ±0.75 kcal/mole.

4 p. (Paper 65A1-86, p. 71). Separation of hafnium from zirconium by anion exchange,

J. L. Hague and L. A. Machlan The results of a systematic survey of the elution of hafnium and zirconium in diluted sulfuric acid, and in so- lutions of hydrochloric and sulfuric acids in water, are presented. The data characterize the behavior of the

sulfate anion complexes of these elements on a strong quaternary-amine anion-exchange resin column. The

possibility of separating these elements is demonstrated.

3 p. (Paper 65A1-87, p. 75). Reaction of sulfur, hydrogen sulfide, and accelerators

with propylene and butadiene, F. J. Linnig, E. J. Parks, and L. A. Wall As part of a study of vulcanization, propylene as a model compound for natural rubber has been reacted with

sulfur alone, with hydrogen sulfide alone, and with each

of these materials in the presence ofcertain accelerators. Butadiene as a model compound for intermediate conju- gated systems found in vulcanized rubber by means of infrared studies has been similarly studied. Results of mass spectrometer analyses of the volatile portions of the reaction products indicate the formation of sulfides,

disulfides, and carbon-to-carbon bonds. Zinc dimethyl dithiocarbamate (ZnDM DC), a vulcanization accelerator,

facilitates the formation of hydrogen sulfide from the

olefin or diolefin in the presence of sulfur, and in turn promotes the reaction of hydrogen sulfide with the olefin and diolefin. The ZnD M D C-accelerated reaction of hydrogen sulfide and sulfur with the diolefin may account

for the reduced conjugation observed in vulcanizates

accelerated with ZnDM DC. Studies with free radical accelerators show that a mechanism other than a free radical chain mechanism is involved in the formation of diisopropyl sulfide in the reaction of propylene with sul-

• fur (or hydrogen sulfide) and certain substances that

facilitate the reactions. The same conclusion applies to the formation of a nonvolatile residue in the ZnDM DCaccelerated reaction between propylene and sulfur. Other phases of the reactions involve the formation of com- pounds from what appear to be free radical fragments of

the original molecule. In most of the reactions, appreciable portions of the reaction products are nonvolatile.

7 p. (Paper 65A1-88, p. 79). March-April 1961 Mass spectra of some deuteroethanes, E. I. Quinn and

F. L. Mohler Mass spectra of seven of the nine possible deutero- ethanes have been measured. When the patterns are computed on a scale to make the sums of ions equal, it is found that the abundances of molecule ions differ nearly twofold in the different molecules, and there are large differences in the patterns of the two C2 H4 D2 molecules. The peaks in the C, range are compared with the patterns predicted for simple breaking of the C—C bond and dis- sociation of the methyl radicals. The "weighting factors"

for removing H and D, H D, and 2D, etc., from C2 H D5 are computed and also the weighting factors for H + and D +

for all the deuteroethanes are given.- 3 p. (Paper 65 A 2- 89, p. 93). Heats of hydrolysis and formation of potassium boro- hydride, W. H. Johnson, R. H. Schumm, I. H. Wilson, and E. J. Prosen The heat of reaction of potassium borohydfide with 0.060 molal HC1 has been measured by solution calori- metry. The heat of solution of the hydrolysis products has also been measured and combined with certain litera- ture values to calculate the process: K BH4 ( c) + HC1( g) + 3Ha O(li q) -*KC1( c) + H3 B03 ( c) + 4H2 ( g)

,

Atf°(25 °C)= -354.06 ±1.84 kj/mole (-84.62 ±0.44 kcal/mole). A combination of this value with literature values for the heats of formation of HCl(g), H2 0(liq), KCl(c), and H3 B03(c) gives for KBH4 (c): Atf/°(25 °C)= -228.86 ±2.30 kj/mole

(-54.70 ±0.55 kcal/mole). Other data on the heats of formation of the alkali-metal borohydrides are discussed briefly. 3 p. (Paper 65A2-

90, p. 97). Heat of combustion of borazine, B3 N3 H6

, M. V. Kilday,

W. H. Johnson, and E. J. Prosen The heat of combustion of liquid borazine has been

determined according to the following equation: B3 N3 H6 (liq)= 15/4 02(g)+ 3/2 H2 0 (liq)= 3H3 B03 (c) + 3/2N2 (g), AW°(25 °C) = -2313.3±12.6 kj/mole (-552.90 ±3.0 kcal/mole). 7
From this value the heat of formation of liquid borazine may be calculated as Atf/°(25 °Q=- 548.5±13.4 kj/mole (-131.1 ±3.2 kcal/mole), and for the gas, AW/°(25 °C) = - 519.2 ±13-4 kj/mole (-124.1 ±3.2 kcal/mole). 4 p. (Paper 65A2-91, p. 101). Thermodynamic properties of thorium dioxide from 298 to 1,200 °K, A. C. Victor and T. B. Douglas As a step in developing new standards of heat capacity applicable up to very high temperatures, the heat content

(enthalpy) of thorium dioxide, ThOa

, relative to 273 °K, was accurately measured at ten temperatures from 323 to 1,173 °K. A Bunsen ice calorimeter and a drop method were used to make the measurements on two samples of widely different bulk densities. The corresponding heat- capacity values for the higher density sample are repre- sented within their uncertainty (estimated to be +0.3 to 0.5%) by the following empirical equation (cal mole -1 deg~l at T °K): C°= 17.057+ 18.06(10-') T- 2.5166 (10

5 )/r2 At 298 °K this equation agrees with previously reported low-temperature measurements made with an adiabatic

calorimeter. Values of heat content, heat capacity, emtropy, and Gibb's free energy function are tabulated from 298.15 to 1,200 °K. 7 p. (Paper 65A2-92, p. 105).

Calculated energy dissipation distribution in air by fast electrons from a gun source, J. E. Crew

Results of calculations on the energy dissipation distribution for electrons from a point collimated (gun) source in an infinite air medium are presented. The cal- culation has been made for a monoenergetic source of 0.4 Mev electrons. The method of moments has been employed, fitting the two spatial variables separately. 4 p. (Paper 65A2-93. P- 113). Vitrons as flow units in alkali silicate binary glasses, L. W. Tilton Two volume-changing processes found useful in studying the mechanism of viscous flow in glasses are:

(a) stress-induced variation in fissuring near vitrons at their peripheries where the Si—O bonds are tensed and

weakened, and (b) distention and modification of all silica network by added oxides. These idealized proc- esses, readily derivable from the vitron concept of penta- gonal ring structure in glass [l],

2 are sensitive to both temperature and composition and have previously been

found useful [l, 2, 3, 4, 5] for understanding other properties of glasses. Viscous flow of vitrons as units in annealing ranges, and at higher processing temperatures for silica-rich glasses, is here viewed as permitted primarily by the breaking of tensed and weakened Si—O bonds in shell-like stressed tissues surrounding vitrons. For modifier-rich glasses at high temperatures, where the activation energy

of flow is known to be low for alkali silicates but slightly higher for alkaline earths, the shearing of cation-to- oxygen bonds may also be involved. The fissures be- tween vitrons and matrix network may provide free volume

for cooperative maneuvers among the vitrons.

At high processing temperatures, both viscosity and

activation energy of flow are known to decrease monotonically and at first with extreme rapidity as the content

of modifiers increases. This is understandable if even

slight modification materially decreases the local pli- ability of the matrix network and oxide-volume expansion

progressively widens the fissures that must be created

vitron growth potential is checked by tangential Si—

O

bond stresses. On cooling toward annealing temperatures, the ob- served rapid increases in viscosity and in activation energy of flow are here ascribed to a general tendency

toward narrowing of peripheral fissures, with stronger bonds therein, as the distorted dodecahedral cages return toward symmetry in response to the increases in 0—0

repulsions. Such repulsions increase with extreme

rapidity if ionic separations become smaller than equi- librium distances. Near the annealing ranges where it becomes necessary

to hold glasses at constant temperatures for appreciable

times in order to observe flow of the high-temperature

type, it is noticeable that the activation energy of flow increases as the content of modifiers increases. This

suggests that the closure of fissures at these very low

processing temperatures may be more effective in pre- venting cooperative maneuvers than in resealing the weak and broken Si—O bonds. Below annealing temperatures, where the readily ob- served viscosities become somewhat higher while the

activation energies decrease very rapidly, it is suggested

that the character of flow is changing until finally there are possible only volume relaxations with such small

relative movements as are permitted by the bending rather than breaking of bonds. 10 p. (Paper 65A2-94, p. 117). Tetragermanates of strontium, lead, and barium of formula

type AB4 09

, C. R. Robbins and E. M. Levin

Three new tetragermanates, SrGe4 09 , PbGe4 09

, and BaGe409

, of formula type AB409 were found. BaTiGe3 09 , the germanium analog of the mineral silicate benitoite (BaTiSi3 09

) was prepared for study and comparison. In- dexed X-ray powder diffraction patterns of the tetra- germanates and of BaTiGe3 09 and BaTiSi 3 09 show:

(1) the tetragermanates are apparently isostructural;

(2) the unit cell of BaTiGe3 09 at room temperature is related to that of the tetragermanates by a doubling of the c-axis of the latter; (3) die tetragermanates and the metastable (room temperature) form of BaTiGe3 09 are apparently structurally similar to, but not isostructural with

benitoite; (4) within its temperature stability range, BaTiGe3 Os appears to be isostructural with BaTiSi3 09

. Density, melting point, and partial optical data for the tetragermanates were obtained. 5 p. (Paper 65A2-95,

p. 127). May-June 1961 International practical temperature scale of 1948, Text

revision of I960, H. F. Stimson The International Practical Temperature Scale of 1948

is a text revision of the International Temperature Scale

of 1948, the numerical values of temperatures remaining
the same. The adjective "Practical" was added to the name by the International Committee on Weights and Measures. The scale continues to be based upon six fixed and reproducible equilibrium temperatures to which

values have been assigned, and upon the same interpolation formulas relating temperatures to the indications of specified measuring instruments. Some changes have

been made in the text to make the scale more reproducible than its predecessor. The triple point of water, with

the value 0.01 °C replaces the former ice point as a defining fixed point of the scale. It is also recommended

that the zinc point, with the value 419.505 °C, be used

instead of the sulfur point. The recommendations include new information that has become available since 1948.

7 p. (Paper 65A3-96, p. 139). Evaluation of the NBS unit of resistance based on a computable capacitor, R. D. Cutkosky An evaluation of the unit of resistance maintained at the National Bureau of Standards, based on the prototype standards of length and time, is described. The evaluation is based on a nominally one-picofarad capacitor whose value may be calculated from its mechanical di- mensions to high accuracy. This capacitor is used to calibrate an 0.01-microfarad capacitor. A frequency- dependent bridge involving this capacitor establishes

the value of a 10

4-ohm resistor. Comparison of that resistor with the bank of one-ohm resistors maintaining

the NBS unit of resistance establishes that this unit is nEr7 =1.0000023 ohms ±2.1 ppra. The indicated uncertainty is an estimated 50 percent

error of the reported value based on the statistical uncertainty of the measurements and allowing for known

sources of possible systematic errors other than in the speed of light, assuming that the speed of light c= 2.997925xl0 ,o cm/sec. 12 p. (Paper 65A3-97, p. 147). Wavelengths and intensities in the first spectrum of bromine, 2000 to 13000 A, J. L. Tech and C. H. Corliss The first spectrum of bromine, Br I, has been newly

investigated using electrodeless discharge tubes as light sources. The observations have led to a list of wavelengths and estimated intensities of 1056 lines emitted

by neutral atoms in the region from 12965 A in the infra- red to 3325 A in the ultraviolet. Most of the wavelengths

are given to 0.01 A and the intensities are estimated on

a relative scale between 1 and 75,000. Lines of Br I were not found in the ultraviolet between 3325 and 1700 A. 8 p. (Paper 65A3-98, p. 159). Torsional resonance vibrations of uniform bars of square

cross section, W. E. Tefft and S. Spinner

Relations by which the shear modulus may be computed

from the fundamental and overtones of the torsional resonance frequencies of square bars have been estab- lished empirically. The results are analyzed in terms of a proportionality

factor, R, defined by the equation G = (2/ jn

/n) 2pR. R is found to increase with increasing cross section to length

ratio. Also, the overtones are less than integral multi- ples of the fundamental by an amount which increases

with increasing cross sec (Paper 65A3-99, p. 167). length

Infrared studies of aragonite, calcite, and vaterite type

structures in the borates, carbonates, and nitrates, C. E. Weir and E. R. Lippincott

Infrared absorption spectra have been obtained on the

alkali nitrates, the divalent metal carbonates, and the

rare earth borates which assume the aragonite, calcite, or vaterite crystal structures. It was observed that similar structures give rise to analogous spectra except for the carbonate and borates having the vaterite structure. The marked differences observed in these latter spectra

are discussed. Frequency shifts produced by cation substitution are ascribed to repulsion between closed electron shells of oxygen atoms. It is concluded that this repulsive force determines the structure type in the rare earth borates, lip. (Paper 65A3-100, p. 173).

Dielectric properties of polyamides: Polyhexamethylene

adipamide and polyhexamethylene sebacamide, A. J. Curtis The dielectric relaxation in two polyamides has been

studied over a temperature range from —100 to 175 °C and

a frequency range from 50 c/s to 10 Mc/s. The effects

of various thermal treatments on the relaxation behavior and density, X-ray diffraction, and intrinsic viscosity have been studied. The polyamides were polyhexamethylene adipamide) and poly(hexam ethylene sebacamide). Four relaxation phenomena have been identified. Mechanical relaxation processes are compared with the

dielectric phenomena and possible molecular mechanisms

are discussed. 12 p. (Paper 65A 3- 101, p. 185).

t of formation of cs

t 25 °C, H. A. Bermai

ium alumina te nd E. S. N< The heat of formation of 3CaO Al2 03 -CaC03

- 10.68H2 O

at 25 °C was determined by the heat-of-solution method,

with 2N HC1 as the solvent and 3CaO- Al2 03 -6H2 0 and CaC03 as the reactants. The heat of solution of CaC03 , to form dissolved C02

, was obtained by a new technique and a modified calculation which served to include the heat of vaporization of the gas escaping in the reaction and resulted in a higher value than those obtained by Wells and Taylor and by Backstrom in determinations

representing only partial solution of C02

. The results obtained were: kj/mole kcal/mole 3CaO-AlJ O3 -CaCO3 -10.68H2 O

Heat of formation

from elements, tS.H°( —1956

from reactants and I-LO -18.9 Heat of solution in 2N HCl -532.9 -127.4 3CaOAl2 03 -6Ha O

Heat of solution in 2N HCl -576.6 -137.8 CaC03 Heat of solution in 2N HCl -35.0 -8.4

11 p. (Paper 65A3-102, p. 197). 9
Thermodynamic constants for association of isomeric, chlorobenzoic and toluic acids with 1,3-diphenylguani- dine in benzene, M. M. Davis and H. B. Hetzer

This paper reports values of AFJS , AW, and AS25 for the association of diphenylguanidine with the isomeric monochlorobenzoic acids and the isomeric toluic acids in benzene from spectrophotometric measurements at 25 and

30 °C, using bromophthalein magenta E (3', 5', 3", 5"- tetrabromophenolphthalein ethyl ester) as the indicator. The results are compared with available data for other donor-acceptor associations in aprotic solvents which

include the monomer-dimer equilibrium of benzoic acids,

the association of tertiary amines with iodine, and the association of certain oxygen bases with phenols. The

comparisons indicate that the value of the ratio AW/298AS is approximately constant in the following associations in aprotic solvents; (1) Association of phenolic or carboxylic acids with nitrogenous bases to form hydrogen bonded ion-pairs; (2) hydrogen bonding of weakly acidic phenols to nitrogenous bases; (3) association of tertiary amines with iodine. A somewhat smaller

value for this ratio seems to apply to most associations

of phenols with oxygen bases. Possible applications of these findings include estimation of other thermodynamic

constants when one of the constants AF, AW, or AS is known, and clarification of the relative importance of

ionic and covalent contributions in hydrogen bond formation. 5 p. (Paper 65A3-103, p. 209). Heats of combustion and formation of trimethylborane,

triethylborane, and tri-ra-butylborane, w. H. Johnson,

M. V. Kilday, and E. J. Prosen The heats of combustion at 25 °C of trimethylborane

(liquid), triethylborane (liquid), and tri-rc-butylborane

(liquid), to form crystalline boric acid, liquid water, and

gaseous carbon dioxide have been determined to be -2989.4 ±22.4 kj/mole (-714.48 ±5.36 kcal/mole), -4975.6 ±15.1 kj/mole (-1189.2 ±3.6 kcal/mole), and

-8901.0 ±10.2 kj/mole (-2127.4 ±2.4 kcal/mole), re- spectively. These data, combined with the heats of formation of boric acid, carbon dioxide, and water give. -34.79 ± 5.40, -47.2 ±3.7, and -83.2 ±2.5 kcal/mole at 25 °C for the standard heats of formation of trimethyl- borane, triethylborane, and tri-rc-butylborane, respectively. The data of other investigators are discussed

briefly. 5 p. (Paper 65A3-104, p. 215). Pyrolysis of linear copolymers of ethylene and propylene,

S. Straus and L. A. Wall The rates of volatilization of linear polymers of ethyl- ene and propylene and their copolymers are somewhat

characteristic of random degradation in that a maximum

occurs in the rate curve for all polymers studied. In- creasing amounts of propylene in the copolymer showed

increases in the maximum rate on thermal decomposition. Minute inorganic and organic impurities added to the polypropylene have considerable effect on the thermal

stability of the polymer by lowering the rates of volatil- ization and increasing the activation energy. Possibly

there is an inhibition of the free-radical chain process, and the overall reaction becomes more like that for the

initiation process. Rate studies and volatile decomposition products for a fully deuterated linear polyethylene

were also determined, and its activation energy was cal- culated to be 70 kcal/mole, which is very close to the value (72 kcal/mole) calculated for the nondeuterated

polymer. The effect of a large dose of beta-radiation on

a linear polyethylene was also determined. Results sug- gest that scissions in the chain, as well as cross links, are caused by the radiation. 6 p. (Paper 65A3-105,

p. 221). Pyrolysis of fluorocarbon polymers, L. A. Wall and

S. Straus The thermal decomposition of various fluorocarbon polymers were investigated; volatile products of the decomposition were determined along with the overall rates of volatilization, and from these rates the activation energies were calculated for the thermal degradation

reactions. The thermally most stable of all the polymers

thus far studied are the completely fluorinated ones. However, evidence from a study of the decomposition of hexafluoropropylene telomers and from the study of a copolymer of tetrafluoroethylene and hexafluoropropylene suggests that the homopolymer of hexafluoropropylene, if

it could be made, would be quite unstable. The photo- induced decomposition of polytrifluorochloroethylene was

also investigated, and estimates of the activation ener- gies were obtained for the various elementary steps of

the decomposition mechanism. The photoinduced experi- ments indicated that mutual termination of the radical intermediates takes place and that a diffusion effect on depropagation becomes pronounced below 250 °C. 12 p. (Paper 65A3-106, p. 227).

Preparation of fluoro- and Bromofluoroaryl compounds by copyrolysis of bromofluoroalkanes, L. A. Wall, J. E. Fearn, W. J. Pummer, and R. E. Lowry

Pyrolysis of tribromofluoromethane yields chiefly hexafluorobenzene. Copyrolysis of this material with several bromine-containing compounds was studied at 540 °C

and under several atmospheres' pressure of nitrogen gas. The addition of bromine or dibromodifluoromethane has

very little effect on the pyrolysis products of tribromo- fluoromethane. Copyrolysis with carbon tetrabromide or bromoform yields increased amounts of bromopentafluoro- benzene and dibromotetrafluorobenzene at the expense of hexafluorobenzene. The addition of relatively small amounts of l,l,l-tribromo-2,2,2-trifluoroethane gives a

significant yield of octafluorotuluene. 4 p. (Paper 65A3"

107, p. 239). Thermal stability of polydivinylbenzene and of copoly- mers of styrene with divinylbenzene and with tri- vinylbenzene, S. Straus and S. L. Madorsky

Samples of polydivinylbenzene (PDVB) and of copoly- mers of styrene with divinylbenzene (DVB) and with tri- vinylbenzene (TVB) were pyrolyzed in a vacuum in the temperature range of 346 to 450 °C. The volatile prod- ucts were collected in two fractions: A heavy fraction

volatile at the temperature of pyrolysis and a light frac- tion volatile at room temperature. Mass spectrometer

analysis of the light fraction showed that for the copoly- mer containing 2 percent DVB the yield of styrene monomer is somewhat greater than for the pure polystyrene. 10
On pyrolysis, of copolymers containing 25 percent of DVB or of TVB yield reduced amounts of styrene monomer; those containing about 50 percent of DVB do not

yield any styrene monomer. Rates of thermal degradation

of PDVB and of the copolymers were studied in the temperature range of 330 to 390 °C; the activation ener- gies calculated on the basis of these rates were 53, 54,

58, 58,6l,and 65 Iccal/mole for the copolymers containing

2 percent DVB, 25 percent DVB, 48 percent DVB, 56 per- cent DVB, 25 percent TVB, and for PDVB, respectively. 6 p. (Paper 65A3-108, p. 243). Conformations of the pyranoid sugars. IV. Infrared ab- sorption spectra of some fully acetylated pyranoses,

R. S. Tipson and H. S. Isbell The infrared absorption spectra of twenty pyranose

acetates in the range of 5000 to 250 cm

-1 are reported. The conformation adopted by each of fourteen of the cor- responding methyl glycopyranosides (or their acetates) had previously been assigned by us from a study of their infrared spectra. Analysis of the spectra revealed, for the pyranose acetates (as for the methyl glycopyranosides and their acetates), groups of absorption, bands

which showed a concerted shift on change of anomeric

disposition. Assignment of conformation by the methods

earlier developed indicated that, for most of the com- pounds examined, the conformation is the same for the pyranose acetate, methyl glycopyranoside, and acetylated methyl glycopyranoside of one anomer of a monosaccharide. The following new assignments of conformation were

made: The CA conformation for penta-O-acetyl-a-L-xy/o- hexulopyranose and hexa-O-acetyl-a-D-g/wco-heptulopyranose; and, possibly, either a non-chair conformation

or a mixture of the CA and CE conformations for hexa-Oacetyl-L-g/ycero-/3-D-g/«co-heptopyranose and hexa-Oacetyl-D-g/ycero-/3-D-gtf/ac/o-heptopyranose. 18 p. (Paper 65 A3- 109, p. 249). A standard for the measurement of the pH of blood and

other physiological media, V. E. Bower, M. paabo, and

R. G. Bates A buffer solution containing potassium dihydrogen phosphate (0.008695 molal) and disodium hydrogen phos- phate (0.03043 molal) is proposed as a pH standard for the physiologically important range, pH 7 to 8. The

proposed standard solution is prepared by dissolving

1.179 g (air weight) of potassium dihydrogen phosphate and 4.303 g (air weight) of disodium hydrogen phosphate

in ammonia-free water and diluting to 1 liter at 25 °C. The ionic strength is 0.1. Standard pH values (pHs ) were assigned to this ref- erence solution at temperatures from 0 to 50 °C by means

of emf measurements of hydrogen-silver chloride cells without liquid junction. The activity coefficient of

chloride ion, upon which the assignment of pHs depends, was evaluated by means of a recently proposed convention. By this means, standard values precise to ±0.001

unit could be derived from the emf data. At 25 °C pHs is 7.414, and at 38 °C it is 7.382. The operational consist- ency of these standard values with those for the 0.025-m

equimolal phosphate buffer (one of the NBS primary standards) was demonstrated. 4 p. (Paper 65A3-110, p. 267).

July-August 1961 Electrical properties and kinetics of electrode reactions,

R. J. Brodd A common basis for investigations of the properties of electrode reactions is provided. The basic equations of electrostatics and electrodynamics and the assumption

that electrode reactions are relaxation processes, are used to develop the equations for the electrical behavior

of electrode systems. Thus electrode reaction processes

are characterized as two states separated by an energy

barrier. The application of static and alternating fields

to electrode systems is interpreted in terms of the kinetic parameters of the electrode reactions. The equations for impedance are applied to silver and cadium electrode systems reported in the literature. The agreement of experiment and theoretical expectation is excellent. The

equations are also applied to the interpretation of the impedance of LeClanche cells. The kinetic analysis of

a simple unimolecular reaction is used to illustrate the kinetic interpretation of experimental information. This

simple analysis may be extended to more complex reactions. 8 p. (Paper 65A4-111, p. 275).

Effect of hydrostatic pressure upon the relaxation of birefringence in amorphous solids, R. M. Waxier and

L. H. Adams A study was made of the effect of hydrostatic pressure upon the relaxation of birefringence in two commercial

plastics which were glasslike in nature. The birefrin- gence was introduced into the materials by loading in uniaxial compression, and the decay of birefringence with time was measured using a polarimeter. The rate at which

the optical path-difference disappeared was greatly in- hibited by the hydrostatic pressure, and a pressure of 10,000 bars was found to be sufficient to stop the release

completely. The results are interpreted as the effect of hydrostatic pressure upon the mobility of the materials. Some experiments were conducted to determine the effect

of temperature upon the relaxation, that the effects of pressure and temperature might be compared. 6 p. (Paper

65A4-112, p. 283).

Vapor pressures of platinum, iridium, and rhodium, R. F. Hampson, Jr., and R. F. Walker The vapor pressures of platinum, iridium, and rhodium have been measured using a microbalance technique based on the Langmuir method. Heats of sublimation at 298 °K were calculated with the aid of free energy functions. The least square lines for the vapor pressure

data, the heats of sublimation, and the normal boiling points obtained were as follows:

(1) Platinum: Log Patro =6.76l27

'j? 75

(1,916 to 2,042 °K) A«| (298)= 134.9 ± 1.0 kcal/mole bp=4,100± 100 °K

11
(2) Iridium: LogPatm = 7.139-^^ (1,986 to 2,260 °K) AW|(298)= 159.9 ±2.0 kcal/mole

bp = 4,800 ± 100 °K

(3) Rhodium; Log Pato =6.894-^^ (1,709 to 2,075 °K) T AWg(298)= 132.5±2.0 kcal/mole bp= 4,000 ± 100 °K. The indicated uncertainties are estimates of the overall

limits of error. The value of the gas constant R used in the calculation of AH% is 1.98726 cal/degree mole. 7 p. (Paper 65A4-113, P- 289). Crystallization of bulk polymers with chain folding: theory of growth of lamellar spherulites, J. D. Hoffman

and J. I. Lauritzen, Jr. A systematic study of the problem of spherulitic growth

in linear polymers in bulk has been carried out. A calculation of the radial growth of polymer spherulites is given

for four models. These concern growth where the surface

nuclei that control the rate are (1) bundlelike and coherent, (2) chain folded and coherent, (3) chain folded and noncoherent, and (4) bundlelike and noncoherent. The

required modifications of nucleation theory are given. Then the radial growth rate laws are derived for each

model, and the type of "spherulite" that would be formed

discussed. The model with chain folded and coherent growth nuclei leads to a typical lamellar spherulite. The properties of

the individual chain folded lamellae that form the spher-'

ulite are predicted, including the change of step height

with growth temperature, melting behavior, and the be- havior on recrystallization. (Chain folded lamellae may

also occur in specimens that are not obviously spherulitic.) Under certain conditions, the noncoherent model

with chain folds can lead to a modified lamellar spherulite. None of the bundlelike models will lead to a typi- cal lamellar spherulite, though a spherical microcrystalline object might be formed. It is concluded that lamellar

spherulites consist largely of chain folded structures. The factors that could cause chain folded crystals to appear in profusion in bulk polymers are discussed. The

case of homogeneous initiation is considered first. Ho- mogeneous initiation of chain folded nuclei in bulk will prevail if the end surface free energy of the bundlelike nucleus exceeds that of the folded. It is shown that the end surface free energy of the bundlelike nucleus, as cal- culated with a density gradient model, will be larger than had been supposed previously. It is therefore considered

to be theoretically possible that the end surface free energy of the bundlelike nucleus may in some cases exceed that of the folded nucleus. Attention is given to the possibility that folded structures appear in large numbers because cumulative strain or large chain ends pre- vent the growth of bundlelike nuclei to large size, even

when the latter type of nucleus is energetically favored when small. Heterogeneous initiation of folded structures

is then considered. Other topics mentioned include: (1) Conditions that might lead to nonlamellar or nonspherulitic crystallization in bulk, (2) the origin of the twist that is frequently exhibited by the lamellae in spherulites, (3) the transi- tions that may sometimes occur in the radial growth rate law, and (4) interlamellar links. 40 p. (Paper 65A4-114,

p. 297). Phase equilibrium relations in the binary system barium oxide-niobium pentoxide, R. S. Roth and J. L. Waring A large portion of the phase equilibrium diagram for the binary system barium oxide-niobium pentoxide has been

constructed from observations of fusion characteristics and X-ray diffraction data. In the system five binary compounds were observed with BaO: Nb2 Os ratios of 5:2,

1:1, 6:7, 3:5, and 1:3 and a 6:1 compound was postulated. The 1:1 compound was found to melt congruently at 1,455 °C and have only one stable polymorph,, although a second metastable polymorph can also be prepared. The

5:2 compound melts congruently at 1,542 °C; the 6:7, 3:5, and . 1:3 phases melt incongruently at 1,330, 1,290, and

1,315 °C, respectively. The phase relations of the 6:1 compound could not be determined due to the reaction between this phase and platinum metal. No 2:1 compound was observed in this system. 8 p. (Paper 65A'4-115,

P- 337).

Solid state reactions involving oxides of trivalent cations, S. J. Schneider, R. S. Roth, and J. L. Waring

Selected mixtures in 69 binary systems involving A1203 , Ga2 03 , Cr2 03 , Fe2 03 , Sc2 03 , ln2 03 , Y203

, and the rare earth oxides were studied by X-ray diffraction techniques

after heat treatment at various temperatures. A plot of

the radii of the A

+ 5 cations versus the radii of B

+ 3 cations shows the regions of stability for the different structure types found for the double oxides of the tri- valent cations. The following structure types were en- countered: A, B, and C-type rare earth oxide; corundum,

beta galia; kappa alumina; garnet; perovskite; and several types which could not be definitely related to known

structures. The majority of A

+ 3 B +

303 compounds have

the perovskite structure. Several phases, including (l-x)Fe2 03 -*Al 2 03 ss and (l-x)Fe2 Gy*Ga2 03 ss, appear to have structures similar to kappa alumina. Solid solution

definitely occurs in many of the garnet type compounds

which contain gallia. Based on the data collected in this survey, the subsolidus phase equilibria relation- ships of 79 binary systems were drawn. 30 p. (Paper 65A4-H6, p. 345). Gamma irradiation of fluorocarbon polymers, R. E. Florin and L. A. Wall

Several fluorocarbon polymers were irradiated with Co60 gamma radiation at doses up to 10

22 ev/g. The poly- mers studied included polytetrafluoroethylene, polytri- fluoroethylene, polychlorotrifluoroethylene, a copolymer

of tetrafluoroethylene with hexafluoropropylene, and

several rubbery vinylidene fluoride copolymers. G-vlaues 12
were measured for volatile products, for free radicals de- tected by electron spin resonance, and, in the case of

polychlorotrifluoroethylene, for scissions. The course of degradation or crosslinking was followed by zero- strength-time and tensile-strength measurements. It was

found that for polytetrafluoroethylene and its hexafluoro- propylene copolymer the presence of air-accelerated scis- sion drastically. The mechanism of the radiation-induced changes is discussed in terms of free-radical intermediates. 13 p. (Paper 65A4-117, p. 375). Inhibition of diffusion flames by methyl bromide and tri- fluoromethyl bromide applied to the fuel and oxygen

sides of the reaction zone, E. C. Creitz The difference in extinguishing effectiveness of an

inhibitor introduced on the two sides of the reaction zone

of diffusion flames has been measured as a function of oxygen concentration in the 02 -N2 mixture supplied to the flames. Six fuels and two inhibitors were used. It was

found that when the inhibitor was added to the fuel, the volume percentage required for extinguishment was much

greater than when added to the oxygen side of the reaction zone, with the single exception of CO flames in- hibited by trifluoromethyl bromide. In all cases except

the latter, the amount required for extinction increased

with increase of the oxygen concentration, being rela- tively less dependent on oxygen concentration above a

certain threshold in the neighborhood of 21 percent when

the inhibitor was added to the fuel. Above oxygen concentrations on the order of 25 percent, methyl bromide was completely ineffective when added to the oxygen

side of the reaction zone, and above about 32 percent oxygen it was ineffective when added to the fuel, since

at this oxygen concentration it burns without additional

fuel. 8 p. (Paper 65A4-1 18, p! 389).

Calibration of a monitor for use in bremsstrahlung beams,

E. G. Fuller and E. Hayward

The calibration of a thick-walled ionization chamber by means of a sodium iodide scintillation spectrometer is described. The calibration was made for six bremsstrah- lung energies in the range 6 to 19 Mev. 4 p. (Paper

65A5-119, P- 401).

Mass spectrometric study of NF2 , NF3 , N2 F2

, and N2 F4 , J. T. Herron and V. H. Dibeler Appearance potentials have been measured for selected

ions from NF2 , NF3 , N2 F2

, and N2 F4

. Ionization-dis- sociation processes are identified and bond dissociation energies are calculated. In addition, the bond dissociation energy, D(F2N—NF2 ), has been directly measured to be 5.14 ±0.38 kj/mole (21.5 ±1.6 kcal/mole). A summary

is made of available thermochemical and mass spectro- metric data for N—F compounds and some evidence is presented to support the designation of cis and trans structures for the N2 F2 isomers. 5 p. (Paper 65A5-120,

p. 405).

Rate of the reaction NO + N, and some heterogeneous

reactions observed in the ion source of a mass spectrometer, J. T. Herron The rate of the reaction NO + N— N2 + 0 has been measured to be 1.0±0.5xl0 13 cm 3 moles-1 sec

-1

at room

temperature. The heterogeneous reactions N + O—>NO

and O + O—>02 were observed to occur in the ion source

of the mass spectrometer. 3 p. (Paper 65A5-121, p. 411). Synthesis of the humites wMg2 Si04 -Mg(F, OH)2

, A. Van

Valkenburg The humite group comprises four minerals having the general formula nMg2 Si04 -Mg(F, OH)2 where n=l, 2, 3, and 4. These have been synthesized in the laboratory from melts, by solid state reactions, and by hydrothermal

techniques. Complete substitution of GeOa for Si02 has

been accomplished in three of the humites and partial substitution of OH ions for F, Fe for Mg, and Ti for Mg

or possibly Si, has been accomplished in one or more of

the series. Indices of refraction of the synthetic humites

are given and powder X-ray diffraction data have been

obtained for the fluorine end members. Also, infrared data from 4,000 to 300 cm

-1

are given for the fluorine end members and these are compared to the corresponding

spectra of the natural analogs. 14 p. (Paper 65A5-122,

p. 415). Phase equilibria in systems involving the rare earth oxides. Part III. The Eu2 03 -In2 03 system, S. J. Schneider The equilibrium phase diagram was determined for the Eu2 03 —ln2 03 system. An induction furnace, having an

iridium crucible as the heating element (susceptor), was

used to establish the solidus and liquidus curves. The

1:1 composition melts congruently at 1745 ±10 °C Melt- ing point relations suggest that the 1:1 composition is a compound with solid solution extending both to 31 mole

percent ln203 and 71 mole percent ln2 03

. The compound

is pseudohexagonal with «h= 3.69 A and ch= 12.38 A.

Isostructural phases also occur in the 1:1 mixtures of both GdjOj and Dy2 03 with ln2 03

. The melting points of Eu203 and ln2 03 were determined to be 2,240 ±10 °C and

1910 ±10 °C respectively. A eutectic occurs in the Eu2 03 -In2 03 system at 1,730 °C and about 73 mole per- cent In2 Os

. The indicated uncertainties in the melting

points are conservative estimates of the overall inaccuracies of temperature measurement. 6 p. (Paper 65A5-123,

p. 429). Heats of hydrolysis and formation of dimethoxychloroborane, M. V. Kilday, W. H. Johnson, and E. J. Prosen The heat of hydrolysis of dimethoxychloroborane has

been measured; for the reaction, (CH3 0)2 BCl(liqK3H2 0(liq)=H3 B03 (c)+2CH3 OH(liq)+HCl(g) AH(25 °C) = - 26.6 ±0.8 kj/mole

= -6.4 ±0.2 kcal/mole From this, we have calculated the heat of formation of dimethoxychloroborane: for the liquid, A///°(25 °C) = -782.1 ±1.8 kj/mole (- 186.9 ±0.4 kcal/mole), and for the

gas, Atf/°(25 °C) = - 747.9 ±2.2 kj/mole (-178.8 ±0.5

kcal/mole). 6 p. (Paper 65A5-124, p. 435). 13
Tritium-labeled compounds VII. Isotope effects in the oxidation of D-mannitols-C 14 and D-mannitols-* to D-fructoses, L. T. Sniegoski, H. L. Frush, and

H. S. Isbell D-Mannitols, labeled either with carbon-14 at Cl, C2,

or C3, or with tritium attached to Cl, C2, or C3, were

prepared. After oxidation by Acetobacter suboxydans, the

distribution of radioactivity in each of the resulting labeled D-fructoses was determined. Labeled D-mannitol

is unique among the hexitols in that it may be oxidized by

A. suboxydans in either the labeled or the unlabeled part

of the molecule. Except in the oxidation of D-mannitol2-t, the competing reactions result in the formation of a mixture of D-fructoses, each having radioactivity in one

of two different positions. Hence, the isotope effect, k*/k, (where k* and k are, respectively, the rate constants for oxidation in the labeled and in the unlabeled

part of the labeled D-mannitol molecule) is the ratio of

the activities at the two positions of the product,

D-fructose. The following isotope effects were found for the bacterial oxidation of labeled D-mannitols: (1) for D-mannitol- 2-C14

, k*/k=0.93; (2) for D-mannitol-2-f, A*A = 0.2'3; and

(3) for D-mannitol-3-/, k*/k = 0.70. For D-mannitols

labeled at other positions, no isotope effect was detected, since k*/k was unity. The large isotope-effect for D-mannitol-2-i is indicative of rupture of the C2—H bond

in the rate-determining process.. It is suggested that the secondary isotope-effect for tritium at C3 indicates hyper- conjugation of the C3 hydrogen atom in the activated enzyme-substrate complex; the lack of such effect for

tritium at Cl may be due to unfavorable stenc conditions

for hyperconjugation of the Cl hydrogen atoms in the complex. The following substances were prepared and their iso- topic distributions determined: D-fructose-I,6-C 14 and

D-fructose-i,6-f (from 1-labeled D-mannitols); D-fructose* 2,5-C1* and D-fructose-5-J (from 2-labeled D-mannitols); and D-fructose-3, 4-Ci4 and D-fructose-3, 4-f (from 3-labeled D-mannitols). A procedure, employing D-fructose-2, 6-C14 as an internal standard, was devised for the analysis of D-fructose-3, 4-t. 9 p. (Paper 65A5-125, p. 441). Franck-Condon factors to high vibrational quantum numbers I: Na and N

+

, R. W. Nicholls Franck-Condon factor arrays have been computed nu- merically to high vibrational quantum numbers for the band systems. N2

: C'n-B'Il (Second Positive) N2

: B*Tl-A*2 (First Positive) N2

: A*2-Xl2 (Vegard Kaplan) Nt

: a'll-X'S (Lyman-Birge-Hopfield) N+: A

2U-X*E (Meinel) N+: Bl-Xl (First Negative) and for the following ionization transitions

10 p. (Paper 65A5-126, p. 451).

November-December 1961 Comparison of lens response for sinusoidal and square- wave targets at several focal positions, S. H. Emara A study has been made of the sine-wave and square- wave responses of a lens at two apertures and several

focal positions, both on- and off-axis. Two focal positions, one of which gives the best definition and the other the highest contrast for coarse patterns, were lo- cated precisely. At these focal positions and at several

other arbitrarily chosen positions the sine-wave and square-wave responses were measured. Because of the

scattering character of the photographically-made target objects, a special technique has been employed for cali- brating the targets to obtain their contrast as seen by the lens under test. The results show that for large apertures of the lens

there is some frequency at which the response (either sine or square) is the same for the two focal positions (curves cross). This phenomenon has been further studied by computing the square-wave response of the lens from

its sine-wave response; and it was found that there is close agreement between the computed and experimentally determined responses. 8 p. (Paper 65A6-127, p. 465). Wavelength shifts in Hg198 as a function of temperature,

S. H. Emara The wavelength shifts for the green (5460A) and blue (4358A) lines emitted from an electrodeless discharge lamp of Hg19S have been studied as a function of the temperature of the water jacket of the source. The values

of the wavelength shifts observed for the green and the blue lines are (8.5±3) 10" 6 A/°C and (2+1) 10" 6 A/°C,

respectively. 2 p. (Paper 65A6-128, p. 473). Variability of spectral tristimulus values, I. Nimeroff,

J. R. Rosenblatt, and M. C. Dannemiller As the spectral tristimulus values of the CIE Standard Observer System for Colorimetry are measurable quantities, their variabilities should be known. This paper

describes a procedure for deriving "within" and "be- tween" variances and covariances in the spectral tri- stimulus values, based on color-matching data for in- dividual observers. The "within" variances are based

on the replications of color-mixture data by an observer. The "between" variances are based on differences among the color-mixture data of individual observers. A

statistical model is given for the system in which the experimental data are obtained. Formulas for expected

values (means), variances, and covariances are developed. Variances and covariances belonging to different sources

of uncertainties in the experimental data are considered. A procedure is developed for determining the uncertainties in the constants of a linear transformation to a sys- tem analogous to the present CIE system. The formulas

for variances and covariances after linear transformation

are given, for a rigorous empirically-based choice, and

also for an arbitrary choice of transformation constants. The complete standard observer system for every 10 m^

consisting of means, variances, and covariances derived

from an arbitrary transformation, is listed. The betweenobserver variabilities are found to be about 10 percent of the averages of the color-mixture data and the average

ratio of the between-observer variabilities to the within- observer variabilities is found to be about 5.7. ? p. (Paper 65A6-129, p. 475). 14
Extension of the Flory-Rehner theory of swelling to an

anisotropic polymer system, S. D. Bruck The Flory-Rehner theory for isotropic swelling of rubber crosslinked in the dry state is extended to an

anisotropic system crosslinked in the dry, oriented state. The new parameters introduced into the equation can be

readily determined from dimensional changes of the fiber

in a suitable solvent using a photomicrographic tech- nique. Unlike other methods, such as the cathetometric and weight methods, this technique enables the attain- ment of swelling equilibrium usually within 30 minutes. Good agreement is obtained between the equivalents of crosslinks calculated from chemical analyses and from swelling measurements, respectively. 3 p. (Paper

65A6-130, p. 485).

Fiber structure-property relationships: A disulfide- crosslinked self-crimping polyamide, S. D. Bruck A structural modification of nylon-6 fiber (polycapro- lactam) was achieved by the introduction of a high density of intermolecular disulfide crosslinkages. The

crosslinking process leads to an unexpected three-dimensional crimping in the dry and wet states (similar to wool), and to the formation of helical coils if swelling is carried out in a solvent capable of destroying the crystallites remaining after crosslinking. This phenomenon

has not been observed previously in round cross-section

synthetic homofibers. A possible explanation is advanced

which attributes this crimping and coiling tendency to differential swelling caused by the varying crosslinking density across the fiber axis and to structural asymmetry

resulting from the crosslinking process. 6 p. (Paper

65A6-131, p. 489).

2,3-O-Isopropylidene-a-D-lyxofuranose, the monacetoneD-lyxose of Levene and Tipson, R. Schaffer A proof of structure is presented for the title compound,

previously uncharacterized. In the course of the investi- gation, the crystalline 2,3-O-isopropylidene acetals of calcium D-lyxonate, D-lyxono-l,4-lactone, D-lyxitol, /S-D-erythrofuranose, calcium D-erythronate, and D-ery- throno-l,4-lactone were prepared. The diacetate and

dibenzoate of 2,3"0"isopropylidene-D-lyxose were also

synthesized. 6 p. (Paper 65A6-133, p. 512). Effect of perchloryl fluoride additions on the flame speed

of methane, C. Halpern The effects of addition of small quantities Qf perchloryl

fluoride and of oxygen on the flame speed of methane-air

mixtures have been determined and are compared with each

other and with the effect of moderately preheating the burning mixture. Only small additions of perchloryl

fluoride, up to 3 percent by volume, could be used be- cause of the corrosiveness of its combustion products. Perchloryl fluoride is more effective than oxygen in increasing the flame speed of methane but less effective,

in the amounts added, than preheating the burning mixture to 330°F. Maximum flame speeds for given experi- mental conditions were found to vary linearly with in- creasing additions of either perchloryl fluoride or oxygen.

12 p. (Paper 65A6-134, p. 513). TITLE PAGE AND CONTENTS TO VOL. 65A. 5 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SECTION A. PHYSICS AND CHEMISTRY, VOLUME 66A, JANUARY- DECEMBER 1962

Acidity functions. Values of the quantity p(a li yC i) ror buffer solutions from 0 to 95 °C, R. G. Bates and

R. Gary

The thermodynamically defined quantity p(aayci) is a useful acidity function for measuring the acidic or basic

character of electrolytic solutions. This function can be

evaluated from electromotive force data (£) for cells without liquid junction consisting of one electrode re- versible to hydrogen ions and one electrode reversible to chloride ions. The function is given by E-E°

P(a n yC \) = ~ +log mci . 2.30259RT/F

Summarized in 20 tables, the function has been calculated from emf data recorded in the literature for the hydrogen-silver chloride cell. A consistent set of standard potentials (£°) and currently accepted values of the natural constants were used. The tables cover a range of

p(ct H ycl ) from 1.6 to 12.5 and a range of temperature from

0 to 95° C. Included are buffer solutions of three dif- ferent charge types. Ionic strengths vary in the range

0.01 to 0.20. Properties and uses of the acidity function

are discussed. 11 p. (Paper 65A6-132, p. 495).

Absolute isotopic abundance of terrestrial silver, W. R. Shields, E. L. Garner, and V. H. Dibeler

Isotopic abundance ratios are reported for a commercial

silver nitrate, 13 samples of native silver, and 11 silve minerals of various compositions and from widely dis tributed deposits. Collateral measurements of known mix

tures of nearly pure silver isotopes permit the determi

nation of absolute abundance ratios. Native silver fron Cobalt, Ontario, previously reported as exhibiting sta

tistically significant variation, is re-examined. Addr

tional measurements are reported for samples from the same nugget and from the same region. Except for the

original observation, no significant variation from normal abundance is observed for any of the samples. The Ag 107/Ag 109 ratio obtained from pooling the data is 1.07597

with a 95 percent confidence limit of ±0.00055 for the

effect of random errors and a total uncertainty of ±0.00135 when an allowance for the possible effects of known

sources of systematic error is included. 3 p. (Paper

66A1-135, p. 1). of a :opp ei , C. H. Corlis The temperature of a copper arc in air has been measured by comparing 31 sets of transition probabilities for 15
spectra of 20 elements with spectral-line intensities from those elements separately added to the copper. The

intensities are taken from the recendy published NBS

Tables of Spectral-line Intensities and the transition probabilities from the literature. The individual determi- nations are discussed. The set of determinations is shown to follow a Gaussian distribution about a mean of 5100 °K. The average deviation of the determinations is 470 °K and the standard deviation of the mean is 110 °K. This temperature may be used in the evaluation of thou- sands of atomic transition probabilities from the intensities in the new tables. The effect of the uncertainty in the temperature on derived transition probabilities is evaluated as a function of excitation potential. 8 p. (Paper 66A1-136, p. 5). Melting process and the equilibrium melting temperature

of polychlorotrifluoroethylene, J. D. Hoffman and J. J. Weeks A new method of estimating the equilibrium melting

temperature, Tm , of a polymer is described, and applied

to polychlorotrifluoroethylene (PCTFE). Experimentally determined values of the so-called observed melting point, Tm (obs), are plotted as a function of the isothermal

crystallization temperature, Tx

. When freed of secondary

effects, such as recrystallization, the data fit a straight

line of positive slope on a T^(obs) versus Tx

plot, Tx being the abscissa. This line is then extrapolated to its intersection with the line T^(obs) = T^ The temperature

at this intersection is Tm . This intersection is at 224 °C for PCTFE, and Tm is quoted as 224 + 1 °C. (The highest melting point actually attained for a speci- men was 218.2 °C.) The value of Tm estimated using

the extrapolation procedure is compared with that estr mated using the customary method of slow stepwise

warming. A theoretical justification is given for making the type

of plot mentioned above. The most important assumption used in the theory is that one of the dimensions of the growing crystal retains a value rather close to that of the appropriate growth nucleus during an isothermal crystallization, the other two dimensions being large in comparison. Combination of this with the fact that the rele- vant dimension of the growth nucleus will vary as the" reciprocal of the degree of supercooling leads to the prediction of melting points that increase linearly with

crystallization temperature. The assumption that one of the dimensions of the crystal retains a value fairly close

to that of a growth nucleus can readily be justified on

the basis of polymer crystal growth with chain folds. Its justification in the case of the customary bundlelike mode

of crystallization is less clear. It is demonstrated ex- perimentally that even the largest detectible crystals in PCTFE are only about 70 percent thicker than a primary

nucleus, when secondary effects are minimized. The application of the theory to systems other than PCTFE is discussed briefly, and some preliminary measurements on polyethylene mentioned. Some points

relating to the shape of the melting curves of highly

crystalline polymers are also brought out. 16 p. (Paper

66A1-137, p. 13).

Tritium-labeled compounds VIII. Confirmation of the position of the tritium in D-glucose-6-i and D-glucitol5-t, L. T. Sniegoski andH. S. Isbell The radiochemical purity of D-glucose-6-r and D- glucitol->f was established by oxidation of the labeled compounds and determination of the radioactivity of the products. The results show that, in each instance, the

tritium is present solely in the position cited. 2 p. (Paper 66A1-138, p. 29). Infrared absorption spectra in the study of mutarotational

equilibria of monosaccharides, R. S. Tipson and H. S. Isbell The infrared absorption spectra (in the range of 5000 to 250 cm

-1

) of 6 anomeric pairs of sugars and of 12 single anomers are presented, together with the spectra (in the range of 5000 to 667 cm-1

) of the dry lyophilizates of the respective equilibrium solutions of these 18 sugars in Analysis of the spectra indicated the presence, in a number (possibly, in all) of the equilibrium mixtures, of some of the carbonyl form (aldehydo or keto) of the respective sugar. Conclusions as to the other components of each equilibrium mixture agreed with those

derived from mutarotational studies, except for D-lyxose and D-ribose. Despite the reported absence of mutarotation for D-g/wco-heptulose and D-marzno-heptulose, the equilibrium mixture of each was found to contain one or more forms different from that originally dissolved. 28 p. (Paper 66A1-139, p- 3D.

Preparation of high 'purity trimethylborane, G. S. Ross,

D. Enagonio, C. A. Hewitt, ?nd A. R. Glasgow The preparation of high- purity trimethylborane is described. Impurities were removed by fractionation of the ammonia adduct, NH3 :3(CH 3 ) 3

. Mass spectrometric anal- yses were used during the fractionation to determine these impurities. After purification of the B(CH3) 3 in the form of its ammonia adduct, high-purity hydrogen chloride was used to regenerate the B(CH3 ) 3

. This reaction and

the subsequent distillation were carried out in a stain- less steel system. Storage as a gas in stainless steel cylinders, rather than as a solid addition complex in glass vessels, eliminated the possibility of recontamination on regeneration. The purity of B(CH3) 3 was deter- mined cryoscopically to be 99.9 mole percent. 5 p. (Paper 66A1-140, p. 59). Reaction of several aminopyrimidines with formaldehyde,

G. L. McLeod

Formaldehyde has been shown to react with 2-aminopyrimidine (II) and 2-(methylamino) pyrimidine (V) at room

temperature to give the corresponding methylol derivatives or the corresponding methylenebis(aminopyrimidines). The reaction of formaldehyde with 2-amino-4,6- dichloro-5-methylpyrimidine (VII) and also its failure to react with 2-(dimethylamino)pyrimidine (IX) are cited as evidence that the pyrimidine ring is not involved in the

reaction. 5 p. (Paper 66A1-141, p. 65).

16
Acidic dissociation constant and related thermodynamic

quantities for diethanolammonium ion in water from 0 to 50 °C, V. E. Bower, R. A. Robinson, and R. G. Bates The dissociation constants of diethanolamine (2:2-

dihydroxydiethylamine) and its conjugate acid were

determined by electromotive force measurements of the

cell

Pt; H,(g, 1 atm),(HOCJH4) J NHJ Cl(w2 1 ), (HOC^NH (mt), AgCl (s); Ag

in the temperature range 0 to 50 °C. The acidic dissociation constant (K t/l) of the diethanolammonium ion is given by-log Kfe/,= 1830.15 + 4.0302 — 0.0043261 T, T

where T, the temperature on the Kelvin scale, lies be- tween 273.15 and 323.15°. From this equation were cal- culated AG°, the change in free energy; AH°, the change

in heat content; AS°, the change in entropy; and AC°„ the change in heat capacity that accompany the dissociation

of 1 mole of diethanolammonium ion in the standard state. At 25 °C, -log K b/l =8.883; AG°= 50,682 joule mole" 1

; Af/°=42,400 joule mole" 1

; AS°=-27.8 joule deg-'mole" 1

; and AC° = 49 joule deg-'mole- 1

. 5 p. (Paper 66A1-142,

P- 71). Fiber structure—property relationships II; macroscopic

deformations of alkylene sulfide crosslinked poly- caprolactam fibers, S. D. Bruck The introduction of alkylene sulfide crosslinks into oriented nylon-6 (polycaprolactam) homofiberis described. The resulting structural modifications are found to pro- duce crimping and coiling in the dry and wet states of the

fiber resembling the situation in wool. In a previous paper a similar phenomenon was reported for a disulfide crosslinked nylon-6 homofiber. The macroscopic defor- mations exhibited by the alkylene sulfide crosslinked

fibers differ in at least three respects from the disulfide crosslinked samples: (1) the crimp frequency is much

higher and the crimp amplitude smaller, (2) in addition to crimping, some helical coiling takes place even when

the fiber is in the unswollen state, and (3) the extent of crimping and coiling is not decreased by gradual air- oxidation of some of the reactive groups. An explanation

for this crimping and coiling previously advanced is cor- roborated by additional evidence provided by chemical

analyses, and X-ray diffraction, briefringence, and swell- ing data. 5 p. (Paper 66A1-143, p. 77).

Ion transport across membranes: I. Definitions of membrane electromotive forces and of flows of electrolytic solutes, B. C. Duncan An analysis is given for the treatment of membrane

transport phenomena in accord with the theory of steady

state thermodynamics. A linear macroscopic theory for discontinuous systems is applied as a postulate. It is shown that as a consequence of the transformation properties of the Onsager reciprocal relations the definition of a

membrane electromotive force gives corollary definitions

of the flows of electrolytic solutes as a whole in the form of linear combinations of the flows of ionic constituents. It is shown that established conventions which set the activity coefficients of ionic constituents equal to unity at the reference state of infinite dilution lead to a particular definition of the membrane electro- motive fotce which may be applied at any concentration. 14 p. (Paper 66A1-144, p. 83). March-April 1962

Correction factors for the calibration of encapsulated

radium sources, R. M. Lee and T. P. Loftus

Several aspects of the procedure and corrections for the calibration of encapsulated radium sources at N3S

have recently been investigated. It was found that a chamber equipped with a guard-ring type electrode system

allowing the use of a vibrating reed electrometer as a current detector provides more versatility and precision

than the gold-leaf electroscope now in use for routine

calibrations. Absorption corrections for the U.S. primary

national radium standards have been determined for the NBS chamber: 0.78 percent for standard 5440 and 1.01 percent for standard 5437. The Owen-Naylor integral equation for absorption of rays in the walls of cylindrical radium sources has been evaluated by a power series expansion of the integrand. Absorption coefficients and

correction factors for platinum and Monel metal (materials commonly used for source capsules) have been computed

for the NBS chamber. 7 p. (Paper 66A2-145, p. 103). Description and analysis of the second spectrum of tantalum, Ta II, C. C. Kiess The spectrum has been observed from 2000.73 to 7813.40 A. There are 2,629 lines listed, of which 1,890 have been classified. Observed Zeeman patterns are recorded, as well as g-values. These have aided greatly

in the work on analysis. The 61 known even levels have

been grouped into 26 terms from the 3d3 6s, $d2 6s2 and

5^* configurations. The odd levels number 164; they have no assigned term designations. No series have

been found, but the ionization potential is estimated to be between 16.0 and 16. 5 electron volts. 51 p. (Paper

66A2-146, p. 111). Vibration-rotation bands of carbonyl sulfide, A. G. Maki,

E. K. Plyler, and E. D. Tidwell

Thirty-two infrared absorption bands of carbonyl sulfide (OCS) have been measured and are reported here, seventeen for the first time. Seven absorption bands due

to isotopic molecules were also measured. Rotational constants have been determined and the evaluation of the anharmonicity constants is discussed. 5 p. (Paper

66A2-147, p. 163). Ionization in the plasma of a copper arc, C. H. Corliss From the relative intensities of arc and spark lines observed in a d-c arc in air between copper electrodes,

the degree of ionization of eleven elements added to the 17
copper has been determined. With the aid of Saha's ioni- zation equation, the electron density in the arc was cal- culated to be 2.4xlO u cm

-3

. Partition functions for atoms and ions of 29 elements are newly calculated or estimated and a table of first ionization potentials and

partition functions of atoms and ions for seventy ele- ments is presented. The degree of ionization of seventy elements separately added to the arc is calculated. The

electron density in the arc is confirmed by three inde- pendent spectroscopic and electrical determinations. The

data developed in this paper will enable the calculation

of relative transition probabilities from the intensities in the NBS Tables of Spectral-Line Intensities. 7 p. (Paper

66A2-1 48, p. 169). The vapor pressure of palladium, R. F. Hampson and

R. F. Walker The vapor pressure and heat of sublimation of palla- dium were measured using a vacuum microbalance tech- nique. The mean heat of sublimation obtained was 89. 2 ±

0.8 kcal/mole. Over the temperature range of 1,294 to 1,488 °K the measured vapor pressure may be represented

by: Log Pmm = 8.749- 18655/T. The normal boiling point

is estimated to be 3,200 °K. 2 p. (Paper 66A2-149,

p. 177). Revised standard values for pH measurements from 0 to 95 °C, R. G. Bates Seven standard solutions serve to fix the NBS conventional activity scale of pR (termed pHs ) from 0 to 95° C. The original emf data have been re-examined and the values of the acidity function pH(HyC1 ), from which pH s is derived, have been recalculated with the use of a

single consistent set of standard potentials and electro- chemical constants. The convention proposed recently by Bates and Guggenheim for the numerical evaluation of

the individual activity coefficient of chloride ion in the

buffer solutions has been adopted, and by this means pHs values to the third decimal have been assigned. These "experimental" pHs values in the temperature

range 0 to 95 °C have been smoothed as a function of temperature by least-squares treatment. The properties and uses of the standards are discussed and directions

for the preparation of the solutions are given. 6 p. (Paper 66A2-150, p. 179). Conductometric determination of sulfhydryl groups in swollen polycaprolactam fibers having disulfide and

alkylene sulfide crosslinks, S. D. Brack and S. M. Bailey A simple conductometric titration method is discussed

for the determination of sulfhydryl groups in nonionic polymer networks, such as disulfide and alkylene sulfide crosslinked polycaprolactam fibers. The diffusion of the

titxant into the crosslinked polymer is accomplished by swelling the network structure, thereby eliminating the necessity of destroying the crosslinks and/or breaking

the polymer chains. 3 p. (Paper 66A2-151, p. 185). Chromatographic analysis of petroleum fractions used in oil-extended rubber, D. J. Termini and A. R. Glasgow The classification of oils with respect to differences

in composition is important in their use in the manufacture of oil-extended butadiene-styrene rubber. A rapid chromatographic method of analysis has been developed

in which 2.5- to 3.0-gram samples of oil are desorbed

from silica gel into five different fractions by successive

elution with pentane, benzene, carbon tetrachloride, and

ethanol as eluents. Six extender-oils were analyzed by

this method. Physical properties of the separated frac- tions showed marked differences between fractions of the same oil and similarities between corresponding fractions

of the different oils. The chromatographic separation of extender-oils into compositionally different fractions pro- vides a method for evaluation of the effect of different components on specific properties of the finished rubber

product. 4 p. (Paper 66A2-152, p. 189). Cross-sectional correction for computing Young's modulus

from longitudinal resonance vibrations of square and

cylindrical rods, W. E. Tefft and S. Spinner The cross-sectional correction involved in the calculation of Young's modulus from the longitudinal resonance

vibrations of both square and cylindrical bars has been

determined by an empirical method. On an order of accuracy of 1 part in 1,000, Bancroft's

correction, developed for longitudinal waves in cylinders

of infinite length was found to be satisfactory. For this purpose the thickness of square bars is related to the diameter of cylindrical bars of the same length by

4r

2 =3<*2

. For accuracies of 1 part in 10,000, modifications in Bancroft's correction must be applied. These modifications take a different form for the square rods than for the cylindrical rods. The relation, 2l = n\ held for both shapes and on the higher order of accuracy, i.e., the cross-sectional correction was the same for the funda- mental and overtones on specimens of the same effective

length. 5 p. (Paper 66A2-153, p. 193). May-June 1962 Glass filters for checking performance of spectrophotometer-! ntegrator systems of color measurement, H. J. Keegan, J. C. Schleter, and D. B. Judd A set of five specially selected colored-glass filters to identify variables of malfunction of photoelectric recording spectrophotometers equipped with tristimulus integrators have been standardized on a number of spectrophotometers

corrected for all known errors (wavelength, zero, 100 percent, slit-width, inertia, back-reflectance, and stray- energy). To these standardized spectrophotometry data

definite amounts of these errors were deliberately intro- duced and converted to tristimulus values and chromatioty

coordinates of the International Commission of Illumination system of colorimetry for Sources A, B, and C. Similar reductions show the effects of slit widths of 1, 5, 10, and 15 millimicrons (m/^) on computed results both by

the selected-ordinate method of 10, 30, and 100 ordinates, and by the weighted-ordinate methods of 1-, 5-, 10-, and

15-mft intervals. Duplicate sets of these glasses have

been evaluated by visual comparison with this set of master standards, and are available as part of the Standard Materials Program of the National Bureau of Standards. By comparing the certified values of luminous trans- mittance and chromaticity coordinates for a set of these glasses with the values obtained on a particular inte- 18
grator-spectrophotometer combination, the type and extent

of instrumental errors may be evaluated. 19 p. (Paper 66A3-154, p. 203). Calibration of small grating spectrometers from 166 to 600 cm

-1

, L. R. Blaine, E. FC. Plyler, and W. S. Benedict

In order to provide standards for die calibration of small

grating spectrometers over die region from 166 to 600 cm

-1

, tracings of the spectrum of atmospheric water vapor

are presented. The lines are identified and tabulated. Wavenumbers obtained from energy levels derived from

the best available high-resolution spectra are given, together with an indication of their relative reliability. The best lines are believed accurate to +0.03 cm

-1

. 3 p. (Paper 66A3-155, p. 223). Franck-Condon factors to high vibrational quantum numbers II: SiO, MgO, SrO, AlO, VO, NO, R. Nicholls Franck-Condon factor arrays have been computed nu- merically to high vibrational quantum numbers for the band systems of the following diatomic oxides of interest

in astrophysics and atmospheric physics

SiO: (A'lI-X'X*) MgO: (Bl2-AlII) MgO: (B'S-X'S)

SrO: (A'S-X'S)

AlO: (A2l

+ -^+)

VO: (A2 A-X2 A)

NO/3: (B2II-X2II) NOy: (A^-X^)

5 p. (Paper 66A3-156, p. 227).

Oxidation of aldoses with bromine, H. S. Isbell Rates of oxidation of aldoses with bromine have been

reappraised and interpreted in the light of present con- cepts of conformation and reaction mechanism. It is sug- gested that differences in the rates of oxidation of the a and /S anomers are largely determined by differences in the free energy required by the reactants for passing from

the ground state to the complex in the transition state. Structures for the aldoses in the ground states and in the

transition states are postulated, and factors affecting the energy required for reaching the transition states from the ground states are discussed. The relative rates of oxidation are in accordance with the hypothesis that each of

the aldoses in the ground state has the conformation pre- dicted by Reeves, and, in the transition state, has a conformation in which the oxygen atom of the Cl-hydroxyl

group lies in the plane formed by the ring oxygen atom, CI, C2, and C5. Presumably, this conformation is sta- bilized by resonance involving the oxygen atom of the ring. For aldoses having high stability in one chair confor- mation; the rates of oxidation of the anomers differ widely;

in each instance, the anomer in which the Cl-hydroxyl

group is axial is oxidized more slowly than the anomer in which this group is equatorial. For aldoses having less

stability in a chair conformation, the rates of oxidation of

the anomers differ less widely, but, nevertheless, show a definite correlation with the angular position of the Clhydroxyl group relative to the plane of the ring. For al- doses for which the stability in both chair conformations

is so low that they probably exist in a variety of confor- mations, die rates of oxidation of the anomers show little difference and no particular correlation with the angular

position of the Cl-hydroxyl group. The presence or absence of an oxygen atom in the ring

is used to account for the large differences between the rates of bromine oxidation of the aldoses and those of derivatives of cyclohexanol. Differences in conformation

in the transition state, associated with the presence or absence of this oxygen atom, likewise account for the

fact diat the relative rates of oxidation of the axial and

equatorial isomers in the two classes of compound are reversed. Because of uncertainty as to the anonieric configurations commonly assigned to some of the aldoses, the configurations of 22 aldoses were reappraised. Advantages was taken of the principle that the anomer preponderating

in the equilibrium solution has trans hydroxyl groups at CI and C2. Except for crystalline D-g/ycero-D-zcfo-heptose, the assignments of configuration based on this principle agree with the configurations generally accepted. Classification of crystalline D-glycero-D-ido-hep- toseasan a-D-pyranose necessitates correction of earli- er records in which this sugar was considered to be a /3-D-pyranose.

In accordance with the author's earlier formulation, oxidation of the axial anomer is believed to take place

by two courses: (1) direct oxidation and (2) conversion

to the equatorial anomer by the anomerization reaction and the subsequent oxidation of this anomer. The rela- tive importance of the two courses is not considered in this paper. It is pointed out, however, that the actual difference in the rates for the direct oxidation of the two anomers must be at least as great as that observed

for the overall rates of oxidation. 7 p. (Paper 66A3-

157, p. 233).

An analysis of the solid phase behavior of the normal

paraffins, M. G. Broadhurst A set of best values for the temperatures and enthal- pies of fusion and transition for the n-paraffins is pre- sented. From an analysis of these data a general qualitative theory of the phase behavior of the ^-paraffins is developed. Four distinct crystal structures—hexagonal,

triclinic, monoclinic, and orthorhombic—describe the

solid phases of all ^-paraffins with more than nine carbon atoms in the chain. The latter two structures become

equivalent at longer chain lengths. Odd-even differences

are resolved in terms of reasonable differences in end

group packing, and the smooth increase in melting and

transition temperature with increasing chain lengdi is attributed to a decrease in the ratio of end groups to chain groups. Double transitions are predicted for several pure ^-paraffins above n-C34H70 . Impurity effects are isolated from the pure w-parrafin properties and discussed. The equation, TW (°K)= 414.3 (n - 1. 5)/(« + 5.0) is pre- sented as a correct description of the melting temperatures (TM ) of all w-paraffins above «-C44H90 . Sufficient data to permit an accurate extrapolation of the enthalpies and entropies of fusion to the infinite-chain limit are not

available. 9 p. (Paper 66A3-158, p. 241).

19
Determination of methylene groups in disulfide and methylene sulfide crosslinks in poly caprolactam fibers,

S. D. Bruck Recent publications from this laboratory describe some

unusual properties, such as crimping and helical coiling, induced by heterogeneous, chemical crosslinking of poly- caprolactam fibers. The following crosslinks are involved;

I I N-CH2 -S-S-CH2 -N

I I o=c c=o

I I

I I N-CH2 -S-CH2 -S-CH2 -N

I I o=c c=o

I

I and

I I N-CH2 -S-CH2 -CH2 -S-CH2 -N

I I o=c c=o

I I It has been found that the —CH2 — groups in these crosslinks can be hydrolyzed to yield one equivalent of for- maldehyde for each equivalent of hydrolyzable methylene

group. This permits the application of the chromotropic

acid method for determining formaldehyde to the estimation of the number of crosslinks in the fiber, when used

in conjunction with a previously reported conductometric method for the determination of sulfhydryl groups. A

general method has been worked out, with special attention to sulfur-containing degradation products (of the crosslinks) that may interfere with the analysis. 4 p. (Paper 66A3-159, p. 251). Purification by automatic gas chromatography, M. Tenen- baum and F. L. Howard A completely automatic apparatus has been developed

for the preparative- scale purification of compounds by gas-liquid chromatography. A clock timer periodically activates a pump that injects a sample into the column. The recording potentiometer on which the chromatogram

is traced has a switch mounted at the upper margin. Collection of the purified main component occurs when the recorder pen goes to the end of the scale and trips the switch. The sensitivity of the detector bridge circuit is adjusted so that only the trace caused by the major component will activate the collection process. Toluene, ethylbenzene, and mesitylene were purified with the apparatus. Best results were obtained with

toluene. In one pass through the apparatus, 92 percent of the impurities were removed from the toluene and the

purified product was collected at a rate of 25 ml of liquid per day. 4 p. (Paper 66A3-160, p. 255). High resolution investigation of some infrared bands of carbon disulfide, D. Agar, E. K. Plyler, and E. D.

Ti dwell Absorption bands of carbon disulfide have been measured with high resolution in the regions of 2180 and 2900 cm . Bands have been observed due to several isotopic species. By combining the observed bands with those

previously measured, a set of harmonicity constants for

12 C32S2 has been obtained in cm-1 as follows: XM, -1.070; X22 , 0.126; X33 , -6.54; X12 , 0.860; X13 , -7.86; X23 , -6.45; g22 , 0.656. 6 p. (Paper 66A3-161, p. 259). July-August 1962

Dielectric properties of semicrystalline polychlorotrifluoro ethylene, A. H. Scott, D. J. Scheiber, A. J. Curtis, J. I. Lauritzen, Jr., and J. D. Hoffman The dielectric properties of polychlorotrifluoroethylene (7^= 224 °C, Tg =52 °C) have been measured at temperatures between - 50 and + 250 °C, and at frequencies be- tween 0.1 c/s and 8.6 kMc/s. Specimens of known

crystallinities, ranging from y=0.80 to y=0.00 (pure

liquid) were studied. Comprehensive tables of data are presented. The experimental techniques employed to measure the dielectric properties over these wide ranges

of temperature, frequency, physical state, and sample

type (disks, cylinders, and thin films), are discussed. The operation and calibration of the specimen holder, bridges, resonant circuits, and waveguide apparatus used

are discussed in detail. When the dielectric loss index, e", at 1 c/s is plotted as a function of temperature for a highly crystalline specimen (y=0.80), where the crystallinity consists

largely of lamellar spherulites, three distinct loss peaks

are readily apparent. These peaks occur at about -40 °C

(low-temperature process), 95 °C (intermediate-temperature

process), and 150 °C (high-temperature process). The

dielectric data are compared with the mechanical loss

data obtained at 1 c/s by McCrum. Mechanical loss peaks at temperatures virtually identical to those in the

e' ' versus T plot are found. The high- temperature process is attributed to the presence of well-formed chain-folded lamellar spherulites. Some evidence points to the surfaces of the lamellae as

the site of the loss mechanism. The high-temperature

loss peak does not appear in resolved form in nonspherulitic specimens even when the crystallinity is high. The intermediate-temperature process originates

in the normal supercooled amorphous phase, and is due

to the complex dipole relaxation effects involving motions

of large numbers of polymer chain segments that are associated with the onset o£ the glass transition at Tg = 52 °C. As determined by V- T data, the glass transition temperature at Tg =52 °C that is associated with this relaxation effect does not shift appreciably with in- creasing crystallinity. The lowtemperature dielectric loss process, which is active far below Tg, originates

principally in the supercooled amorphous regions, and

evidently corresponds to a fairly simple motion involving

a small number of chain segments. This process tends

to exhibit anomalous behavior in highly crystalline speci- mens, particularly at low temperatures. A large dipolar contribution of the crystals to the

static dielectric constant was observed. This contri- bution increased with increasing temperature, and corre- sponded to a very rapid dipole reorientation process (r-lO-11 sec at 23 °C). 37 p. (Paper 66A4-162, p. 269). 20
Thermal degradation of fractionated high and low molecular weight polystyrenes, S. L. Madorsky, D.

Mclntyre, J. H. O'Mara, and S. Straus

In previous work on die thermal degradation of poly- styrene of average molecular weight of 230,000, carried out in 3 vacuum in the temperature range 318 to 348 °C,

the rate curves exhibited distinct maximums when per- centage loss of sample per minute was plotted as a function of percentage volatilization. These maximums

"correspond to a volatilization of about 35 to 45 percent and tend to flatten with decreased temperature of pyrolysis. A similar study of rates of thermal degradation at 307.5 °C has now been made on rwo groups of polymers:

(1) low molecular weight, 24,000; 51,000; and 66,000; and (2) high molecular weight, 2,000,000; 2,250,000; and

5,000,000. Whole polymers and also fractions of narrow- range molecular weight were used. The rate curves for the 24,000 and 51,000 molecular-weight samples exhibit very high initial rates, but no maximums; the 66,000 sample showed a maximum at 45 percent volatilization. The rate curves for the 2,000,000, 2,250,000, and 5,000,000 molecular-weight samples exhibit a gradual rise up to about 25 percent volatilization; then, instead of forming maximums, they follow plateaus to about 50 percent

volatilization. These plateaus are indicative of a zero- order reaction in the range that they cover, and the rates corresponding to them fit well on the Arrhenius activation- energy curve obtained previously for polystyrene samples

at higher temperatures. 5 p. (Paper 66A4-163, p. 307). Synthesis of 2-propoxy-5-methylbenzoic acid, G. M. Brauer and L. Simon

2-Propoxy-5-methylbenzoic acid has been synthesized by two routes from p-cresotinic acid. Synthesis of the ethyl ester of p-cresotinic acid, propylation to the ether, and subsequent hydrolysis of the ester proved to be the preferred route. 3 p. (Paper 66A4-164, p. 313). The gamma-ray distribution from oriented cerium-141,

J. F. Schooley, D. D. Hoppes, and A. T. Hirshfeld The distribution of gamma-radiation emitted in the decay of Ce141 nuclei alined in neodymium ethylsulfate single crystals has been remeasured for temperatures as low as 0.0162 °K and has been found to be considerably more anisotropic than previously thought. The dis- crepancy is explained on the basis of preferential scatter- ing of the plane-polarized radiation in the Dewar system.

Similar measurements with Ce141 nuclei oriented in a polarized cerium ethylsulfate crystal have been made. The hyperfine constant for Ce141 in the neodymium ethyl- sulfate lattice is deduced as A =0.0305 ±0.003 cm

-1

, and the E2/M1 ratio for the 145-kev gamma ray in Pr141 is +0.068 ±0.008. 4 p. (Paper 66A4-165, p. 317). Light source for producing self-reversed spectral lines,

J. Sugar A new light source has been developed which produces numerous self-reversed lines in both the first and second

spectra of rare-earth elements. It consists of a pulsed

arc discharge with a peak current of 75 amperes and an on-time of one millisecond per cycle. Resonance lines are nearly completely absorbed, and can be distinguished

by this character. From spectrograms obtained with this light source, the ground states of Tb I and U II were

determined, and those reported for Yb I, Yb II, Tm ly Tm rx, and U i were confirmed. 4 p. (Paper 66A4-166,

p. 321). A diamond cell for X-ray diffraction studies at high pressures, G. J. Piermarini and C. E. Weir

A high pressure X-ray powder camera has been constructed. The instrument has been found to be useful

for routine X-ray work, using molybdenum radiation, to pressures of approximately 60 kilobars. Previously re- ported transitions have been observed in silver iodide, potassium iodide, bismuth, and thallium. The high pressure forms and lattice parameters were found to be: Agl-f.c.c. (NaCl type), a0 =6.067 A; KI-s.c. (CsCl type), a0 =4.093 A; Tl-f.c.c. (NaCl type), a0 =4.778 A; Bi struc- ture not determined. These data confirm previous reports on the high pressure forms of'Agl and KI. Data on Tl and Bi are apparently reported for the first time. The

high pressure modifications were studied at the following approximate pressures which are not indicative of the point where the transition occurs: Agl— 3. 3 kilobars, KI-20 kilobars, Bi-28 kilobars, and Tl-60 kilobars. The pressure limit to which the unit can be used

successfully has not been ascertained. It is believed

to be much higher than the pressures reported. The

present instrument is capable of producing powder dif- fraction patterns of materials of relatively high scattering power, giving data to 2^ = 35°. High background on the X-ray powder patterns is believed to arise from scattering by the diamonds. This background may obscure weak

diffraction rings. This effect may be_ reduced by screening, monochromatization, and other improvements in ex- perimental technique. 7 p. (Paper 66A4-167, p. 325). Thermal conductivity of gases. I. The coaxial cylinder

cell, L. A. Guildner By combining appropriate geometric configuration and mathematical analysis with improved measuring tech- niques, the cell constant of a coaxial cylinder thermal conductivity cell was determined with 0.1 percent. An analysis of the rate of heat transfer in such a cell showed a way to treat the data so that the error contribution of experimental deviations from idealized conditions is kept small. The principal considerations are:

1. That heat transport by convection is significantly large in a dense gas. This transport was analyzed mathe

matically from basic principles. The agreement of ex- perimental results with the analysis indicated that the expressions are valid and that the convective heat trans- port could be accounted for with little more error than was involved in the precision of the heat transfer meas2. That the heat transfer in a vacuum corresponds to the heat transfer by radiation and solid contacts in the presence of a gas. The uncertainty was that associated

with the accuracy of determining the vacuum values.

3. That other effects were small enough to be computed and corrected for without increasing the uncertainty of the values of the thermal conductivity. 8 p. (Paper 66A4-168, p. 333). 21
Thermal conductivity of gases. II. Thermal conductivity

of carbon dioxide near the critical point, L. A. Guildner The thermal conductivity of C02 has been measured in a coaxial cylinder cell as a function of pressure over a range of temperatures from 3.66 to 75.26 °C. Particular

attention was given to the measurements from 1 to 9 deg C above the critical temperature at pressures closely spaced to include the critical density. The thermal conductivity of C02( ^) near the critical point is very large compared to one atmosphere values around room temperature. At 1 deg C above the critical point the thermal conductivity reaches a maximum at the

critical density. This maximum is greater than the maxi- ma at higher temperatures. At 75.26 °C, 44 deg C above

the critical temperature, little unusual increase at the

critical density was observed. The rate of heat transport by convection in the critical region is also very large. This problem was studied

carefully in order that the temperature differences used

were restricted to the region of laminar flow, and that appropriate extrapolation procedures were used to find the rate of heat transfer by thermal conduction alone. Also, at densities and temperatures away from the

critical region, new thermal conductivity values were

obtained. 8 p. (Paper 66A4-169, p. 341). Derivation of the relaxation spectrum representation of

the mechanical response function, R. S. Marvin

Relaxation spectra have been used in both the presentation and interpretation of measurements of the mechanical properties of rubberlike polymers. 2 p. (Paper

66A4-170, p. 349). Intermediate phases in superconducting niobium-tin

alloys, L. L. Wyman, J. R. Cuthill, G. A. Moore, J.J.

Park, and H. Yakowitz

In attempting to produce superconducting wire of the niobium sheath Nb3 Sn core type, it became apparent that results were generally unpredictable. Metallographic examination showed that such materials are heterogeneous and contain a number of intermediate phases. Detailed metallographic studies were made on diffusion zones in which tin had been allowed to react with porous niobium

blocks, with fused niobium rod, and with niobium wires, and on a number of reacted powder mixtures. The phases produced were identified by anodizing to characteristic colors and by microspot analysis, supple- mented by some hot-stage microscope and thermal analysis

tests. On the basis of these observations, a tentative revised diagram is offered to illustrate the types of re- actions which occur in the system. The presumably desired phase, Nb3 Sn, is found to lie between the more easily formed phases Nb4 Sn and Nb2 Sn 3

, which are stable to temperatures well above the peritectoid decomposition of the Nb3 Sn. At lower temperatures the compound Nb2 Sn is formed. It is indicated that the high-temperature treatment to react niobium and tin should be followed either by very slow cooling or by an anneal in the 600 to 700 °C range to form Nb3 Sn. 13 p. (Paper 66A4-171, p. 351).

September-October 1962

Calorimetric calibration of an ionization chamber for determination of X-ray total beam energy, J. S. Pruitt and S. R. Domen

An X-ray calorimeter has been used to determine the

total energy transported by bremsstrahlung beams with maximum photon energies between 18.2 and 170 Mev. The measurements from two experiments have been used

to calibrate an aluminum ionization chamber for routine determinations of total beam energy. The calibrations

are compared with calibrations of the same chamber made

with a scintillation spectrometer, and with calorimetric

calibrations made in other laboratories. 10 p. (Paper

66A5-172, p. 371). Zinc oxide as a standard substance in the solution calorimetry of portland cement, E. S. Newman

Zinc oxide is the standard substance specified for calibrating the heat-of-solutio/i calorimeters used in determining the heat of hydration of portland cement in several American and foreign cement specifications. The

heats of solution of zinc oxide samples from different sources and after different heat treatments have been

determined in the standard mixture of nitric and hydrofluoric acids. It is concluded that the value given in the specifications is low, that heat treatment in the range 310 to 950 °C is not critical, that small variations in the ZnO/acid weight ratio are without significance, and that analytical-reagent zinc oxide from various sources may

safely be used. The mean value obtained for the heats

of solution of zinc oxide from twelve sources determined

in triplicate in l,00HNO 3 ,0.284HF,26.38H2O at a ZnO/

acid weight ratio of 7/425 at 25 °C was 257.82 cal/g with

a standard error of 0.015 cal/g. The thermochemical

calorie of 4.1840 joules is used. The temperature coefficient based on least-square fitting to 16 data points obtained in an earlier study was -0.087 cal/g-deg, with

a computed standard error of 0.013 cal/g-deg. The corre- sponding values for heat of solution and temperature coefficient given in the specifications are 256.6 cal/g and -0.1 cal/g-deg, respectively. 8 p. (Paper 66A5-173,

p. 381). Nuclear optical model analysis of neutron elastic scattering for calcium, R. S. Caswell A nuclear optical model calculation of neutron elastic scattering using five parameters has been made. Appropriate estimates of the effect of compound elastic scattering at low energies are included. Comparisons have

been made with experimental data, and results for the parameters adopted are given for elastic scattering in the energy range from 0.734 to 18 Mev. Although reasonably good agreement between the calculation and experimental

results have been obtained, there is a discrepancy be- tween experiments below 2 Mev, and experimental data is needed between 6 and 14 Mev. Both angular distributions and Legendre expansion coefficients for the total elastic scattering are given. 12 p. (Paper 66A5-174, p. 389).

22
Pyrolysis of some polyvinyl polymers at temperatures up

to 1,200 °C, S. Straus and S. L. Madorsky A study was made of the diermal behavior in a vacuum

of polystyrene, polytetrafluoroethylene, poly(a-methylstyrene), polypropylene, polyisobutylene, and poly(methyl

methacrylate), when pyrolized at 500, 800, and 1,200 °C. The volatile products of degradation were collected and

fractionated, and the fractions analyzed by mass-spectrometric and microcryoscopic methods. Generally, the results from 500 °C pyrolysis resemble those obtained

previously from the same polymer at lower temperatures. The results at 800° and 1,200° indicate a much greater fragmentation of the pyrolysis products than at lower

temperatures. Thus, for example, at 1,200° polystyrene

yields less monomer but considerable greater amounts of C2H2 , C2 H„, C3H4

, and C6H6 than at lower temperatures.

Similarly, poly(a-methylstyrene) yields 100 percent monomer below 500 °C, but at 800 and 1,200 °C the yields

are 88 percent and 34 percent, respectively. Also at the higher temperatures, pronounced amounts of H2 , CH4 , C2H2 , C2H4 , C3 H4 , C3 H6 , C4 H4 , C6H6 , C4H8

, and C8H6 are formed. 6 p. (Paper 66A5-175, p. 401).

Lattice frequencies and rotational barriers for inorganic carbonates and nitrates from low temperature infrared spectroscopy, R. A. Schroeder, C. E. Weir, and E. R. Lippincott

Infrared absorption spectra of inorganic nitrates and

carbonates have been obtained on single crystals at room

temperature, under liquid nitrogen refrigeration and under

liquid helium refrigeration. Diffuse absorption observed

in the room temperature spectra between about 1400 cm

-1 and 700 cm

-1 is resolved under liquid helium refrigeration

into a large number of bands not attributable to funda- mentals or combinations of fundamental frequencies of

the anions. Almost all of diese bands are readily inter- preted as summation bands of fundamental frequencies

with successive levels of a librating oscillator. The

libration is considered to represent a planar torsional oscillation of the anion about the trigonal axis. The

librational frequency depends in part on the crystal structure and on the ions. In a given material die librational frequency as determined from successive bands is reasonably constant. In the substances studied the

librational frequency varied from about 15 cm

1 to 30 cm

-1

. Band limits observed in the spectra are interpreted as

representing rotational energy barriers. These barrier heights are approximately 200 cm

-1 with some dependence

on the crystal structure and the ions involved. Barrier heights calculated from a cosine potential function agree reasonably well witli the observed barriers for the cubic and calcite structures. Similar calculations have not been made for other structures studied because of doubtful assignments or unknown structural details. In particular, spectra of the aragonite structures are remarkable

in detail and complexity, and have not been analyzed. However, the details of these and all other spectra studied appear to involve similar phenomena. 28 p. (Paper

66A5-176, p. 407).

Foreign gas broadening of the lines of hydrogen chloride and carbon monoxide, E. K. Plyler and R. J. Thibault The Lorentz line shape formula is applied in the deter- mination of half-width parameters due to foreign gas

broadening. Various pressures of S02 and C02 are added

to HC1 and CO, respectively. The (1-0) and (2-0) HC1

bands, as well as the (2-0) CO band, are investigated, and there is found to be a very definite relationship be- tween the half-width and the rotational quantum number,

J. No error of more than 5 percent should be expected for the values of y° presented. Some pressure-shifts are observed for HC1, but no quantitative determinations are made. 4 p. (Paper 66A5-177, p. 435). Monolayers of adipate polyesters at air-liquid interfaces, W. M. Lee, R. R. Stromberg, and J. L. Shereshefsky The surface pressure-area isotherms at 24.5 °C are reported for poly(ethylene adipate), poly(fimethy lene

adipate), and poly(propylene adipate), spread as monolayers at air-aqueous interfaces. The monolayers were

spread on distilled water and 0.01 N HC1, using benzene,

chloroform, and acetone as spreading solvents. Poly

(propylene adipate) was the least compressible of

the diree, and poly(ethylene adipate) the most. Poly

(propylene adipate) did not collapse at the highest

pressures studied. Trie spreading characteristics of both poly(ethylene adipate) and poly(propylene adipate) were independent of the amount of material used. The

spreading of poly(trimediylene adipate) appeared to depend upon the spreading solvent. The effect of structure on the surface pressure—area isotherms and the specific areas for each polymer are discussed. 4 p. (Paper 66A5-178, p. 439).

November-December 1962

Heat of formation of nitronium perchlorate, A. A. Gilliland Calorimetric measurements of the heat of solution of nitronium perchlorate (N02 C104 ) and of a mixture of potassium nitrate and potassium perchlorate in aqueous

potassium hydroxide have been made. These are combined

to give: N02 C104(c)+4KOH(in 5300 Ha 0)-KC104(c)+KNO1(c) + 2KOH(in 5300 H2 0) + H2 0(liq) A H = - 285.80 ±0.38 kj/mole = - 68.31 ±0.09 kcal/mole

from which the standard heat of formation of nitronium perchlorate is calculated as AW/°(25 °C) N02 Cl04 (c)= 37.19 ±1.0 kj/mole

= 8.89 ±0.25 kcal/mole,

in which the uncertainty represents twice the estimated

overall standard deviation of the result. 3 p. (Paper

66A6-179, p. 447).

23
Phase equilibrium relations in the binary system bismuth sesquioxide-niobium pentoxide, R. S. Roth and J. L. Waring The phase equilibrium diagram for the binary system

bismuth sesquioxide-niobium pentoxide has been constructed from observations of fusion characteristics and

X-ray diffraction data. In the system five binary com- pounds were observed with Bi2 03 :Nb2 05 ratios of 5:3,

1:1, 4:9, 1:5, and 1:6. The 1:1 compound was found to transform irreversibly (in laboratory time) from the orthor- hombic bismutotantalite type structure to a triclinic form

at about 1,020 °C and the melt congruently at 1,245 °C. The 5:3 compound melts incongruently at 1,193 °C die

4:9 at 1,183 °C and the 1:6 at 1,242 °C. The 1:5 com- pound has a maximum temperature of stability at 1,095 °C and the 4:9 and 1:6 compounds have minimum temperatures

of stability at 1,070 °C and 1,002 °C respectively. Nb2 05 was found to enter into solid solution in Bi 2 03 , up to about 23.5 mole percent Nb2 Os

. The melting point is in- creased and the monoclinic-cubic phase transformation temperature is decreased. A morphotropic phase change

occurs at about 19.5 mole percent Nb2 Os from the cubic

to a pseudocubic structure. 13 p. (Paper 66A6-180,

p. 451).

Elastic constants of rutile (Ti02 ), J. B. Wachtman, Jr., W. E. Tefft, and D. G. Lam, Jr. The six elastic constants (and six elastic compliances)

of rutile were determined in the kilocycle per second

frequency range by a resonance method. The standard

deviations range from 0.2 percent for s n to 4.3 percent

for s 13 . 7 p. (Paper 66A6-181, p. 465). Reaction of hardened portland cement paste with carbon

dioxide, C. M. Hunt and L. A. Tomes

The effect of age, water-cement ratio, and evaporable- water content on the reaction of hardened cement paste

with carbon dioxide was investigated, using small cylin- ders of cement paste. The rate and extent of the reaction

are subject to manipulation by varying the evaporable

water content of the paste. Pastes of different age and

water-cement ratio tend to dry at different rates, and this difference exerts an important indirect effect on carbona- Analysis of the specimens showed that less than one

molecule of nonevaporable water was released for every molecule of carbon dioxide gained, except in paste of low water-cement ratio or at low levels of carbonation in other pastes. If calcium hydroxide were the only phase at- tacked, equimolecular C02 -H 2 0 stoichiometry would be expected. The observed behavior does not rule out the possibility of some preferential attack on calcium hydroxide, but other phases can react while calcium hy- droxide is still present. Water-cement ratio, particularly

in very dense paste, may exert some effect on the comparative accessibility of different phases. 9 p. (Paper

66A6-182, p. 473).

Titanium standards for hydrogen content, J. T. Sterling, F. J s Palumbo, and L. L. Wyman

This paper describes the preparation, analysis, and

certification of a new series of standard samples. These

samples consist of commercially pure titanium containing hydrogen at three levels (32 ppm, 98 ppm, and 215 ppm)

and have been designated National Bureau of Standards

Standard Samples Nos. 352, 353, and 354, respectively.

5 p. (Paper 66A6-183, p. 483). Ultraviolet stability of crosslinked polycaprolactam

systems, S. D. Bruck The relative ultraviolet stability of four chemically

modified polycaprolactam (Nylon-6) systems is dis- cussed: methylmethoxylated fibers and three other fibers having methylene, disulfide, and alkylene sulfide crosslinks, respectively. The ultraviolet degradation of these systems is studied by means of a sensitive analytical technique in which the methylene (-CH2 —) groups re- maining in the chemically modified fibers after irradiation are converted to formaldehyde; die liberated formaldehyde

is then reacted with chromotropic acid to give a colored

product, the absorbancy of which can be determined

spectrophotometrically. The results indicate that the data can be expressed by first order rate equations from which the rate constants may be calculated. The scission

of the crosslinks is accompanied by a decrease in the

internal orientation of die networks as shown by X-ray

diffraction photographs. 7 p. (Paper 66A6-184, p. 489).

Spectral-line intensities and gf-values in the first spectrum of copper, C. H. Corliss Relative intensities are reported for 180 lines of Cu I between 2600 A and 7200 A, observed in a 10-ampere

copper arc. Oscillator strengths, normalized as closely as possible to the absolute scale, are derived from the observadons. 6 p. (Paper 66A6-185, p. 497). Batch adsorpdon from solution, W. V. Loebenstein A batch adsorption equadon was derived by integrating an irreversible rate equadon obtained by neglecting the desorption term of the Langmuir adsorpdon-rate equation. The integrated equadon was in reasonably good agree- ment with experiment and provided a means for deter- mining from the data the parameters q 0 and k t

. These

constants, namely, the adsorptive capacity and the adsorption rate constant, completely characterized the adsorption system at that temperature. Agreement was

found between these batch adsorption parameters and

their counterparts previously derived from column adsorption experiments when both types of adsorption were

performed simultaneously. 13 p. (Paper 66A6-186,

p. 503).

24
Separation of halnium from zirconium and their deter- mination: separation by anion-exchange, L. A. Machlan

and J. L. Hague

A procedure is described for the separation of hafnium

from zirconium and their individual determination. The

sample is dissolved in sulfuric and hydrofluoric acids and the hydrofluoric acid removed by fuming. After dilu- tion with water, the solution is transferred to a column

containing a strong quaternary amine anion-exchange

resin (Dowex-1). The hafnium is eluted with diluted (3.5 percent by volume) sulfuric acid solution. Zirconium is removed by elution with 10 percent by volume sulfuric acid solution. The elements are precipitated with cupferron, ignited, and weighed as the oxides. For samples

containing from twenty to eighty percent of zirconium,

a second separation of the hafnium fraction using the column is necessary. 4 p. (Paper 66A6-187, p. 517). TITLE PAGE AND CONTENTS TO VOL. 66A. 5 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

A. PHYSICS AND CHEMISTRY, VOLUME 67A, JANUARY-DECEMBER 1963.

Heat of formation of calcium aluminate monosulfate at 25 °C, H. A. Berman and E. S. Newman

The heat of formation of calcium aluminate monosulfate, 3CaO-Al2 03 -CaS04-12H2 0, at 25 °C, and of less completely hydrated samples of the same compound, was determined by the heat-of-solution method,

with 2N HC1 as the solvent, and 3CaO-Al2 03 -6H20(c) and CaS04 -2H2 0(c), as the reactants. The results were

as follows: AW, kj/mole AW, kcal/mole 3CaO-Al2 03 -CaS04 -12H20(c) Heat of formation from elements, AW? - 2100

from reactants and H20(1) - 15.0 Heat of solution in 2N HC1 - 495.7 - 118.5 Change of heat of solution with H20 content at 12H20, per mole H2 0

The heat of the reaction (AW) 3CaO-Al2 03 -CaSO4 -12H2 0(c)+2(CaSO4 -2H 2 O)(c) + 1 5H2 0(l)^3CaO- A1203

- 3CaS04- 31H2 0(c)

is -134.4 kj/mole or -32.1 kcal/mole. The heat of the reaction (AW) 3CaO-Al 2 03 -CaS04 -12H 2 0(c)+2(CaS04 -2H 20)(c) + l6H a O(l)-3CaO- Al 2 Os

- 3CaS04- 32H 2 0(c)

is -144.9 kj/mole or -34.6 kcal/mole. Values reported earlier for the heat of formation of calcium aluminate trisulfate and of calcium aluminate

monocarbonate should be revised by adding -0.9 kcal/ mole to each reported \ll value, with die following

resulting values: AW from appropriate reactants AW?

kcal/mole kcal/mole 3CaO-Al2 03 -3CaS04-31H2 0(c) - 47.01 - 4123 3CaO-Al 2 03 -3CaS04-32H 2 0(c) - 49.52 - '4194 3CaO-Al2O3 -CaCO 3 -10-68H 2O(c) - 19.77 - 1957 Conditions for the formation of the monosulfate from

solution, and its properties on exposure to moisture, are discussed. 13 p. (Paper 67A1-188, p. 1)

2,3-dimethylpentane and 2-methylhexane as a test mixture for evaluating highly efficient fractionating columns, E. C, Kuehner A test mixture consisting of 2,3-dimethylpentane and

2-methylhexane was prepared and its relative volatility determined by a fractional distillation method. This test mixture was compared, experimentally and theoretically, with another test mixture commonly used for evaluating

highly efficient fractionating columns. 4 p. (Paper 67A1-189, p. 15). Phase equilibrium relations in the Sc203 -Ga20 3 system,

S. J. Schneider and J. L. Waring The phase equilibrium diagram was determined for the Sc2 03 -Ga 203 system. A quenching furnace, wound

with 60 percent Pt—40 percent Rh wire, was employed

for experiments conducted at temperatures up to 1,800 °C. An induction furnace, having an iridium crucible susceptor, was used to obtain higher temperatures. Temperatures in the quenching furnace were measured with both an optical pyrometer and a 95 percent PT—5 percent Rh

versus 80 percent Pt-20 percent Rh thermocouple. The

melting point of Ga203 was determined as 1,795 ± 15 °C

Experiments at temperatures as high as 2,405 °C failed

to melt Sc2 03. Two intermediate binary phases, a com- pound believed to be 6Sc2 03

- 5Ga2 0 3 and a solid solution occur in the system. The solid solution phase appears

as a single phase in the region roughly defined by the compositional limits of 55 to 73 mole percent Ga2 03 at the solidus. The 6:5 compound, stable only at high temperatures, melts incongruently at 1,770 ± 15 °C and decomposes below 1,700 ± 15 °C. The compound appears

to have orthorhombic symmetry with a = 13.85 A, b = 9.80

A, and c = 9.58 A. The indicated uncertainties in the melting points are a conservative estimate of the overall inaccuracies. 7 p. (Paper 67A1-190, p. 19). Analysis of two infrared bands of CH2 D2 , W. B. Olson,

H. C. Allen, Jr., and E. K. Plyler Two infrared absorption bands of CH2 D2 have been analyzed in the semirigid rotor approximation. These are

the A-type band at 2671.67 cm

-1 and the C-type band at 4425.61 cm

-1

. The A-type band has previously been

assigned as v 3 + v9 , and the C-type band is tentatively assigned as v 3 + u6

. The upper state of the A-type band

is perturbed presumably by the close lying level 2i/ s

. This interaction has not been investigated. The following 25
values were found for the rotational constants of the ground vibrational state: A 0 = 4.303 cm

-1

, B 0 = 3.504 cm

-1

, C0 = 3.049 cm

-1

. 7 p. (Paper 67A1-191, p. 27). Precise coulometric titrations of halides, G. Marinenko and J. K. Taylor A method has been developed for the precise assay of halides by constant-current coulometric titration with

silver ions generated at a silver anode. It is shown that a 4 milliequivalents sample of halide can be titrated with standard deviation of 0.005 percent. 5 p. (Paper 67A1-

192, p. 3D.

Radial distribution study of vitreous barium borosilicate, G. J. Piermarini and S. Block An X-ray diffraction study of a barium borosilicate glass consisting of 24 mole percent barium oxide, 40 mole percent boric oxide, and 36 mole percent silicon dioxide has been performed. Resulting atomic radial distribution functions give the following average inter- atomic distances: Si-O, 1.6 A; Ba-O, 2.8 A; Ba-Ba,

4.7 A; and Ba-Ba, 6.8 A. From the 4.7 A Ba-Ba separation a Ba-O-Ba bond angle of about 11 5° has been calculated. The observed average barium separations are in partial agreement with that predicted by Levin and Block

on the basis of a structural interpretation of immiscibility

data. A proposed coordination change by Levin and

Block for the barium atoms in the system has been confirmed, but the details of the coordination change mecha- Combining the results of the radial distribution study and immiscibility data on the barium borosilicate modifierrich liquid at maximum barium oxide content has indi- cated that approximately 16.75 mole percent barium oxide is involved in the 4.7 A separation and 8.25 mole

percent is associated with the 6.8 A separation. A mechanism which allows the composition of the modifier-rich liquids in the ternary system to be calculated has been presented. The calculated composition has been found to agree well with the experimental

value. 5 p. (Paper 67A1-193, p. 37). Dynamic compressibility of poly(vinyl acetate) and its relation to free volume, J. E. McKinney and H. V. Belcher The complex bulk compliance (dynamic compressibility)

of a commercial sample of poly(vinyl acetate), AYAT,

was measured at frequencies from 50 to 1,000 cycles per second, temperatures from 0 to 100 °C, and static hydrostatic stresses from 0 to 981 bars (gage pressure) using

an alternating hydrostatic stress generated and detected

by piezoelectric transducers mounted in an essentially noncompliant cavity with dimensions small in comparison

to a wavelength. The above temperature range was more

than sufficient to cover the dispersion region in which an

inflection in the storage compliance and a maximum in the loss compliance were observed. The data were re- duced to functions of reduced variables using the WLF

Equations extended to include static pressure with the "universal" WLF Constants and dT/dP = 0.020 t/bar.

The difference in limiting compliances at zero and

infinite frequencies was larger than that predicted from

the dT/dP shift using the free volume concept. A dis- cussion is presented on possible processes that might

contribute to an excessive value between limiting compliances. 11 p. (Paper 67A1-194, p. 43). An investigation of the constitution of the mercury-tin system, D. F. Taylor and C. L. Burns An investigation of the constitution of the mercury-tin system was made by a combination of three techniques:

differential thermal analysis; diffusion and chemical

analysis; and X-ray diffraction. The mercury-silver-tin system is of interest because it is the basis of dental amalgam, the most important single dental restorative

material. Information as to the constitution of these

alloys is incomplete for both the ternary system and the mercury-tin binary system. This study was devoted to the investigation of the mercury-tin system as a prerequisite to a study of the ternary alloys. The results obtained by the various methods are not in complete

agreement. They indicate that the system is more complex than previously reported. Additional evidence for the beta phase as reported by Prytherich was found but

the composition limits and eutectoid temperature remain

to be confirmed. The gamma phase composition limits were found to differ from earlier values. Corroborative

data for Gayler's delta phase and possible evidence for a previously unreported epsilon phase have been found by

X-ray diffraction. The thermal analysis results indicate

the possible existence of additional phases unconfirmed

by other methods. A modified mercury -tin phase diagram based upon these findings is proposed. 16 p. (Paper 67A1-195, p. 55). Effect of methyl bromide additions on the flame speed of methane, C. Halpern The effect of small quantities of methyl bromide, up

to 0.5 percent by volume, on the flame speed of methaneair mixtures has been determined. Maximum flame speeds,

at given experimental conditions, are reduced proportionately to the amount of methyl bromide added. Flame

speeds of rich mixtures are reduced much more than are flame speeds of lean mixtures. Reaction zone thickness

of methane-air flames is increased by the addition of methyl bromide and the thickness increases with the amount of methyl bromide. 7 p. (Paper 67A1-196, p. 71).

March-April 1963 Third spectrum of palladium (Pd III), A. G. Shenstone The Pd III spectrum has been observed from 688 to 2991 A, and the earlier analysis has been revised and

extended. The number of Pd III lines here reported is 1,110, of which 917 are classified as combinations of 57 even energy levels with 111 of odd parity. The interpretation has been aided by theoretical predictions of the approximate positions of expected energy levels. Spectral terms from the 4d* , Ad1 ns

l

, and 4d* 5s 1 5p' configurations

are designated. Eight limit terms are in the 4c? ns

1 configurations. The earlier ionization potential, 33.0 electron volts derived from the (ns 1) 3,s F series (n=5,6) by

meaiis of a Ritz formula, remains unchanged. 24 p. (Paper

67A2-197, p. 87). 26
Broadening of the rotational lines of carbon monoxide by HC1 and by argon, R. J. Thibault, J. H. Jaffee, and

E. K. Plyler The present work deals with the broadening of rota- tional lines of the carbon monoxide 2-0 band by both argon and hydrogen chloride. A high resolution grating spectrometer with a spectral slit width of 0.07 cm

1 was

used, necessitating only a small correction in observed

half-width values. Sufficiently small contributions of CO self-broadening were obtained by using long pathlength cells of 12meters for CO-argon mixture and 1 meter

for CO-HCl mixture. Half-width results, which are considered accurate to within ±5 percent, are presented in the form of a table and by a graph. 2 p. (Paper 67A2-

198, p. 113). Theory of frustrated total reflection involving metallic

surfaces, T. R. Young and B. D. Rothrock The theory for frustrated total reflection has been developed for the case where the third medium is metallic

of complex index. Using parallel polarized light a unique minimum in reflectance occurs at a definite film thick- ness. Experimental verification of the theory is made

and indicates the theory applicable to the precise measurement of thin contact films existing between metallic and dielectric surfaces, lip. (Paper 67A2-199, p. 115). Quantitative metallography with a digital computer:

application to a Nb-Sn superconducting wire, G. A. Moore

and L. L. Wyman

Accurate quantitative data pertinent to the structure of solid materials at the micro size level, which are difficult or prohibitive to obtain by traditional manual measurements, are now obtained directly by a digital computer which uses a photomicrograph as the information input. The history of picture interpretation experiments at the National Bureau of Standards is reviewed. The funda- mental computer operations are illustrated, together with

a description of 24 image processing routines now functional at a practical level. A micrograph of a specimen of Nb-Sn superconductor

wire is exhaustively analyzed. This specimen if found

to contain approximately 70 percent Nb3 Sn, nearly all of which is mutually interconnected. It is also found that

in this specimen the mean free path in the Nb3 Sn super- conducting phase is only 26.5 microns. This small value

results from the spongy structure of the material and numerous interruptions caused by voids and by particles of four other solid phases. The comparative importance

of the several types of interruptions is measured. It is determined that small voids are the most important single cause of the short mean free path, and deduced that these

voids appear to have formed mainly from the reaction dur- ing heat treatment. 21 p. (Paper 67A2-200, p. 127). Moire fringes produced by a point projection X-ray micro- scope, S. B. Newman

Moire fringes produced by soft X-rays passing through crossed gratings of fine wire mesh are demonstrated. Regular systems of bands appearing superimposed on

radiomicro graphs of oriented cellulosic structures may

also be moire fringes. These fringes could be formed by

fibrillate structures acting as crossed diffraction grat- ings. 3 p. (Paper 67A2-201, p. 149). Cyclic polyhydroxy ketones. I. Oxidation products of hexahydroxybenzene (benzenehexol), A. J. Fatiadi, H. S. Isbell, and W. F. Sager

Reliable procedures are given for the preparation and

purification of hexahydroxybenzene (benzenehexol), tetra- hydroxy-/>-benzoquinone, rhodizonic acid, triquinoyl (cyclohexanehexone), croconic acid, and leuconic acid (cyclopentanepentone). Certain derivatives and color

tests, as well as infrared and ultraviolet spectra, are reported for their identification. 10 p. (Paper 67A2-202,

p. 153). Effect of pressure and temperature on the refractive in- dices of benzene, carbon tetrachloride, and water,

R. M. Waxier and C. E. Weir An interferometer for measuring change in index of re- fraction with pressure is described. Absolute indices of refraction are reported to five decimals for benzene, car- bon tetrachloride, and water at pressures as high as 1100

bars over a small temperature range. The results of replicate measurements agree to within ±0.0001. Various

equations relating index and specific volume show systematic deviations in all cases. At constant specific volume, the index of carbon tetrachloride increases with increasing temperature, while the index of water de- creases with increasing temperature. The refractive in- dex of benzene shows no effect due solely to temperature

within the experimental error. Possible explanations for this behavior are discussed. 9p. (Paper 67A2-203, p. 163). Pressure-density-temperature relations of fluid para Hydrogen from 15 to 100 °K at pressures to 350 atmospheres, R. D. Goodwin, D. E. Diller, H. M. Roder, and

L. A. Weber

Experimental data are presented at closely spaced

intervals of temperature and density. The range of ex- perimental densities is from 0.064 to 2.8 times the criti- cal density. There are presented, in addition, tables interpolated uniformly in arguments density and temperature, and also in pressure and temperature. 20 p. (Paper

67A2-204, p. 173). A method for determining the elastic constants of a cubic

crystal from velocity measurements in a single arbitrary direction; application to SrTi03 , J. B. Wachtman,

Jr., M. L. Wheat, and S. Marzullo Three independent velocities of sound can be measured along any direction of propagation in a cubic crystal except the [100] and [ill] directions. These three velocities suffice to determine the three elastic constants and for the [110] direction, the calculation of these constants is easy. For all other directions, the calculation

is more difficult; the only existing method appears to be

a perturbation technique developed by Neighbours. The present paper presents a method using exact equations and an iterative procedure to solve these equations 27
and to calculate both the elastic constants and their standard deviations from the sound velocities and their standard deviations. The method is illustrated with new

data on SrTiOj which give c 11 =3.1 56 ±0.027, c12=1.027±

0.027, 044=1.215*0.006x10" dynes/cm 2 at 25 °C. The

importance of including covariance terms in calculations

of the standard deviations is emphasized. 12 p. (Paper 67A2-205, p. 193). May-June 1963 An absolute calibration of the National Bureau of Standards Thermal Neutron Flux, E. J. Axton The NBS Thermal Neutron Flux has been calibrated in terms of the gold thermal neutron capture cross section. The effective thermal neutron (below cadmium cutoff energy) flux density is estimated to be 4307+2 percent »/cm2 sec in September 1961. This figure is in agreement

with a recent value quoted by the NBS. 3 p. (Paper 67A3-

206, p. 215). Absorption bandsof carbon dioxide from 5.3 to 4.6 microns,

A. G. Maki, E. K. Plyler, and R. J. Thibault Measurements have been made of the frequencies of the infrared absorption lines of C02 in the region from 1850 cm - to 2150 Observations were made at various pressures and pathlengths up to a maximum of 72 meter- atmospheres. Vibration-rotation constants were obtained

characterizing the transitions ll lc 0-000, ll lc, 0-000, 03,c 0-000, 03ld0-000, 200-01 lc

0, 122c 0-01 lc

0, 12Jd0-01 ld0 for C

1202

. The ll lc 0-000 band due to die C

1302 molecule was also measured. 5 p. (Paper 67A3-

207, p. 219). Infrared spectrum of the v2 +v6 band of C' 3 C

12H6

, W. J. Lafferty and E. K. Plyler The infrared spectrum of the i^ 2 +i^ 6 band of C

13 C

l2H6 has been analyzed and a value of B„=0.64865±0.00005 cm

-1 determined. When this value is combined with that found in recent work on isotopically normal ethane, a

"rs

» value of 1.527+0.004 A for the carbon-carbon bond

distance is obtained. (Uncertainties are probable errors.)

3 p. (Paper 67A3-208, p. 225). Self-broadening of carbon monoxide in the 2 v and 3 v

bands, E. K. Plyler and R. J. Thibault The self-broadening of carbon monoxide has been measured for the 2v and 3 ^ bands with pressures up to 3.5 atmospheres. A grating spectrometer of high resolving power was used for the measurements and the correction

for finite slits was small. The corrections varied from 3 to 20 percent for the different conditions of measurement. The half-widths per atmosphere, y°, decreased from 0.089 cm

-1

for |m|=l to 0.053 cm

-1 for |m|=21. Th e half-widths

are compared with those obtained by other investigators and it is shown that the results reported in this work fall in between the self-broadening values previously obtained.

3 p. (Paper 67A3-209, p. 229).

Thermodynamic properties of polyethylene predicted from

paraffin data, M. G. Broadhurst Thermodynamic data on the w-paraffins from w-C 6H M

through ra-C 18H38 have been used to obtain values for the specific heat, entropy, enthalpy, and Gibbs free energy of a large, ideal CH2 -chain crystal from 0 to 420 °K and of

the, liquid above 200 °K. Analytical expressions are given for the properties of the crystal and liquid above

200 °K. For the crystal, a modified Einstein function was used to adjust the melting temperature to 414.3 Values between 975 and 1025 cal/mole for the heat of fusion found to be the ones most consistent with the data. Comparison of the results with polyethylens data shows

reasonable agreement. 8 p. (Paper 67A3-210, p. 233). Spectrophotometric determination of the thermodynamic pK value of picric acid in water at 25 °C, M. M. Davis and M. Paabo The thermodynamic pK value of picric acid was de- termined spectrophotometrically in water containing hydrochloric acid to repress the ionization. The pK value

0.33 (K=0.46) was obtained from data at 450m^. Attempts

to determine the pK value by potentiometric titrations of

picric acid and by spectrophotometric measurements of

picric acid solutions in the near-saturation range did not

yield satisfactory results. The new pK value is compared with previously published values. 6 p. Paper

67A3-211, p. 241). Purity analysis of highly purified materials by time- temperature cryometry, G. S. Ross and H. D. Dixon

Visual observation of the freezing and melting of compounds in cells used for the determination of purity has

uncovered some heretofore unexpected behavior. This

behavior has been correlated with certain difficulties experienced in the measurement of purity, particularly when the sample is very pure. Means for partially reducing these difficulties are proposed and procedures for increasing the accuracy of purity measurements are described. 5 p. (Paper 67A3-212, p. 247). Synthesis of isomers of eugenol, G. M. Brauer, R. W.

Morris, and W. B. Howe

In connection with an investigation of the correlation between structure and reactivity of eugenol isomers,

o-eugenol, 3-allyl-2-methoxyphenol and chavibetol were

synthesized. A five-step synthesis was found to be most

suitable for the preparation of 3-allyl-2-methoxyphenol. An improved separation of chavibetol from eugenol was

achieved by gas chromatography. 5 p. (Paper 67A3-213,

p. 253). Analysis of families of curves, J. Mandel and F. L. McCrackin A systematic approach is presented for fitting empirical expressions to data depending on two variables. The

problem can also be described as the simultaneous fitting of a family of curves depending on a parameter. 28
The proposed method reduces a surface fitting problem

to that of fitting a few functions of one variable each.

First, the surface is expressed in terms of these onevariable functions and using an extension of two-way

analysis of variance, the accuracy of this fit is assessed

without having to determine, at this point, the nature of

the one-variable functions. Then, the one-variable functions are fitted by customary curve-fitting procedures. For illustration, the method is applied to two sets of experimental data. 9 p. (Paper 67A3-214, p. 259). A controlled atmosphere chamber, C. L. Gordon and R. B. Johannesen An inert atmosphere chamber for the transfer of reactive materials is described. It has the advantages of being

inexpensive, easily cleaned, and can be evacuated. 3 p. (Paper 67A3-215, p. 269).

July-August 1963 Symmetry splitting of equivalent sites in oxide crystals and related mechanical effects, J. B. Wachtman, Jr., H. S. Peiser, and E. P. Levine Changes in the symmetry of a crystal caused by an

applied strain have been used to show in what circum- stances an internal friction peak can result from the motion

of isolated point defects. General rules are given to make

the prediction, and these are applied to several structures

of common oxides. The prediction for rutile is compared

with experimental results which are interpreted by the movement of titanium ions between interstitial positions

in the structure. 9 p. (Paper 67A4-216, p. 281). Relaxation modes for trapped crystal point defects, A. D.

Franklin Group representation theory is applied to the problem of calculating the relaxation modes of a point defect trapped near an impurity atom or other defect in a crystal, where

more than one set of neighboring sites is available to the point defect. For illustration, the case of a cation vacancy

trapped near a divalent impurity in the sodium chloride

lattice is treated, including nearest- and next-nearest- neighboring sites. 2 p. (Paper 67A4-217, p. 291). A note on the galvanomagnetic and thermoelectric coeffi- cients of tetragonal crystalline materials, W. C. Hernandez, Jr., and A. H. Kahn

The independent Hall, magnetoresistive, and thermoelectric coefficients for a tetragonal crystal have been

tabulated and geometric configurations for their experi- mental measurement have been determined. These coeffi- cients have been calculated on assumptions of several simple ellipsoidal models, in the range of nondegenerate

statistics. Implications of experimentally observed iso- tropy or anisotropy of transport properties on the structure

of the energy surfaces are noted. 7 p. (Paper 67A4-218,

p. 293)= Photolytic behavior of silver iodide, G. Burley

Silver iodide exposed to high intensity radiation in the visible light spectrum was found to yield a powder X-ray

diffraction pattern showing marked deviations from ideality.

It was found possible to correlate these with a decrease

in primary extinction, indicating a constant progress from an ideal to a mosaic type crystallinity . Large single

crystals showed pronounced asterism in transmission Laue

photographs under similar experimental conditions. Small amounts of colloidal silver were detected. A mechanism

for this process in silver iodide is proposed, in general agreement with the theory of the photographic process. The primary difference from the other silver halides ap- pears to 'be a considerably slower rate, permitting the ob- servation of a two step process in detail. 7 p. (Paper 67A4-219, p. 301). Correlation of muscovite sheet mica on the basis of color, apparent optic angle, and absorption spectrum, S. Ruthberg, M. W. Barnes, and R. H. Noyce A detailed experimental study of color, apparent optic angle, and absorption spectrum (0.3 to l6fx of A) indicates

that there are basic chemical and structural differences

in muscovite micas. Color identification is based upon

spectrophotometer measurements. A method for quantitative evaluation of absorption band activity is defined so

that single and multiple band intensities within the spectrum of an individual specimen and within spectra of dif- ferent specimens can be compared. Three basic spectral types exist for the 0.3 to ljzA region which are comprised

of various weak lines and absorption regions lying along

the base of a deep absorption edge near 0.32/x. Of the three spectral types, one is associated witn ruby micas, while the other two are associated with dark green and

light green micas. The activities of numerous lines and

bands are reported. It is shown that apparent optic axial angle is related to the position of the deep band edge ex- cept for a certain class of ruby specimens which show

anomalous values. A definitive characterization of muscovite sheet is formulated in terms of the absorption coeffi- cients at 0.44, 0.49, and 0.58pi. Direct associations are shown between certain lines in the visible A range and certain bands in the near infrared, while the activities of a number of bands in the middle infrared are correlated to color. 16 p. (Paper 67A4-220, p. 309).

Thermodynamic properties of magnesium oxide and beryl- lium oxide from 298 to 1,200 °K, A. C. Victor and T. B.

As a step in developing new standards of high-temperature heat capacity and in determining accurate thermodynamic

data for simple substances, the enthalpy (heat content)

relative to 273 °K, of high purity fused magnesium oxide, MgO, and of sintered beryllium oxide, BeO, was measured

up to 1,173 °K. A Bunsen ice calorimeter and the drop method were used. The two samples of BeO measured

had surface-to-volume ratios differing by a factor of 15 or 20, yet agreed with each other closely enough to preclude

appreciable error attributable to the considerable surface

area. The enthalpies found for MgO are several percent

higher than most previously reported values. The values

are represented within their uncertainty (estimated to average ±0.25%) by the following empirical equations'

(cal mole -1 at T °K) 29
MgO: Wf -H°213 15 = 10.74097+1.2177(10-') T

2 -2.3183(10-') T

s + 2.261 51(105

) T-1 -3847.94. BeO: //r-tf2

073.i5 = u - 10847+7.1245(10 ~*)T2 + 8.40705(105 )7"1 -5.31245(104 )7-3 -5453.21. Values of enthalpy, heat capacity, entropy, and Gibbs free- energy function are tabulated from 298.15 to 1,200 °K.

5 p. (Paper 67A4-221, p. 325). Heat exchange in adiabatic calorimeters, E. D. West

Heat flow in adiabatic calorimeters of various shapes

and materials is described in terms of linear partial dif- ferential equations. From these equations it is deduced

that in the intermittent heating method the heat exchange

between the calorimeter and the adiabatic shield due to to transients at the beginning and end of the heating

period can be made to cancel. The remaining heat exchange

is the same for intermittent or continuous heating methods

and can be treated as the sum of effects due to gradients

set up by heat flow (1) from the shield to the environment and (2) from the shield and calorimeter heaters to raise

the temperatures of the shield and calorimeter, respectively. The first effect can be accounted for by measurements

during fore and after periods in intermittent calorimetry and by varying the heating rate in continuous calorimetry. Under certain conditions the second effect can be accounted

for by measurements with the empty calorimeter. Variation in heating rate fails as a test for the magnitude of the second effect. 11 p. (Paper 67A4-222, p. 331). Preparation of anhydrous single crystals of rare-earth halides, N. H. Kiess Anhydrous rare-earth halides are prepared by the conversion of the rare-earth oxide to the halide by means of

its reaction with the appropriate ammonium halide. With- out transfer from the reaction vessel, the halide is melted,

then crystallized by slow cooling. The resulting solid usually contains single crystals large enough to permit spectroscopic studies of the compounds. 3 p. (Paper 67A4-223, p. 343). A phase study of the system: oxalic acid/acetic acid/

water; its significance in oxalic acid crystal growth,

J. Strassburger and J. L. Torgesen The presence of limited amounts of water appears to improve the quality of anhydrous oxalic single crystals grown from acetic acid solutions. Water concentrations

in the saturated solutions which allow crystallization of the anhydrous acid have been determined from the phase

study of this ternary system. Near 50 °C the anhydrous

acid crystallizes from solutions containing up to 5.2 weight

percent water, while the dihydrate appears when water is in excess of this amount. The phase diagram shows a minimum content of oxalic acid in solution at a solvent composition near 83 percent

acetic, 17 percent water. The solubility increases with increased acetic acid to isothermal invariant point, found

experimentally at a measured temperature of 50.21 °C to

have the composition 20.94 percent oxalic acid, 73.89 per- cent acetic acid, 5.17 percent water. Decreasing solubility occurs at higher acetic acid concentrations. The maximum

water content which allows crystallization of anhydrous

acid increases with increasing crystallization temperature. The solubility of oxalic acid in acetic acid/water mixtures

at 40° and 50 °C is reported. 4 p. (Paper 67A 4-224, p. 347).

Wavelength calibrations in the far infrared (30 to 1000

microns), K. Narahari Rao, R. V. de Vore, and E. K

Wavelength calibrations in the far infrared (30 to 1000

microns), K. Narahari Rao, R. V. de Vore, and E. K.

Plyler A discussion is presented of certain calibration pro- cedures employed in the region of 30 to 1000 microns. Calculated positions for the pure rotational absorption

lines of the CO, HCN, and N2 0 molecules are given, and

a map of the pure rotational absorption lines of the H20

molecule as recorded with a Perkin-Elmer model 301 spectrophotometer is shown. 8 p. (Paper 67A4-225, p. 351). On the fourth order hamiltonian of an asymmetric rotor molecule of orthorhombic symmetry, W. B. Olson and

H. C. Allen, Jr. The fourth order Hamiltonian of an asymmetric rotor molecule of orthorhombic symmetry given recently has

been considerably reduced in complexity through the use

of equations derived from the basic relationship among

the angular momentum operators. The reduced Hamiltonian

obtained provides a most convenient starting point for the calculation of rotational energy levels from a solution of the complete secular equation, for a perturbation theory solution to the problem of centrifugal distortion and for the deduction of sum rules among the energy levels. 4 p. (Paper 67A4-226, p. 359). Measurement of the thickness and refractive index of very

thin films and the optical properties of surfaces by

ellipsometry, F. L. McCrackin, E. Passaglia, R. R.

Stromberg, and H. L. Steinberg The use of the ellipsometer for the measurement of the thickness and refractive index of very thin films is re- viewed. The Poincare sphere representation of the state

of polarization of light is developed and used to describe

the reflection process. Details of the operation of the ellipsometer are examined critically. A computational method is presented by which the thickness of a film of known refractive index on a reflecting substrate of known

optical constants may be calculated directly from the ellipsometer readings. A method for computing both the

refractive index and thickness of an unknown film is also developed. These methods have been applied to the de- termination of the thickness of an adsorbed water layer on chromium ferrotype plates and on gold surfaces. In the former case the thickness was 23 to 27 A, and in the

latter was 2 to 5 A. The measurement of the thickness and refractive index of barium flouride films evaporated

on chromium ferrotype surfaces is used as an illustration 30
of the simultaneous determination of these two quantities. 15 p. (Paper 67A4-227, p. 363). Color phenomena associated with energy transfer in after- glows and atomic flames, A. M. Bass and H. P. Broida Reactions involving reactive species produced in electric discharges are frequently characterized by the emission of visible light of many different colors. Some typical afterglows and atomic flames have been photographed, and

the observed colors (or spectral distributions) are discuss- ed with regard to the reactions from which they arise. Laboratory studies of this sort are helpful for the under- standing of the energy transfer processes which occur in flames, in electrical discharges, and in the upper atmosphere. 10 p. (Paper 67A4-228, p. 379).

September-October 1963 Reduction of space groups to subgroups by homogeneous

strain, H. S. Peiser, J. B. Wachtman, Jr., and R. W. Dickson

It is assumed that the symmetry elements possessed by

a strained crystal will be those common to the unstrained

crystal and to the macroscopic state of strain. This

principle has been applied to show all of the possible subgroups to which a given space group can be lowered

by homogeneous strain for all of the 230 crystallographic space groups. 7 p. (Paper 67A5-229, p. 395).

High-temperature thermodynamic functions for zirconium and unsaturated zirconium hydrides, T. B. Douglas

Giving greatest weight to the experimentally measured

highest decomposition pressures and the enthalpies in one-phase fields, thermodynamically interconsistent in- tegral and differential enthalpies (heat contents), heat

capacities, entropies, and Gibbs free energies are derived

for the crystalline one- and two -phase fields of the zirconium-hydrogen system for all stoichiometric compositions from Zr to ZrHj^and over the temperature range 298.15 to 1,200 °K. These properties are derived in analytical form, and in most cases are represented by numerical equations, with tabulation for zirconium and H/Zr

atom ratios of 0.25, 0.50, 0.57, 0.75, 1.00, and 1.25. Most of the unique phase-field boundaries which are consistent with the derived properties are located and are compared with those previously reported. In the Zr-H system the enthalpies are shown to relate certain properties at different compositions as well as at different temperatures. Some of the various data show good inter- consistency, while others reveal discrepancies which are discussed critically. 24 p. (Paper 67A5-230, p. 403). Heat of oxidation of aqueous sulfur dioxide with gaseous

chlorine, W. H. Johnson and J. R. Ambrose The heat of oxidation of aqueous sulfur dioxide with gaseous chlorine has been determined by calorimetric methods. The results correspond to the reaction: Cl2 (g) + SOy2500 H,O+2502 H2 O = H2 SGy2500 H2 0

+ 2(HCM250 HjO), A//(25 °C)= -77.28 ±0.14 kcal/mole.

The heat of formation of aqueous sulfuric acid (in 2500 moles of water) has been calculated to be -213-92 kcal/

mole. 4 p. (Paper 67A5-231, p. 427). Thickness of adsorbed polystyrene layers by ellipsometry

,

R. R. Stromberg, E. Passaglia, and D. J. Tutas The adsorption of polystyrene from cyclohexane below

the theta temperature onto chrome ferrotype plate was

studied by means of ellipsometry (polarization spectrometry). In this technique changes in the state of polari- zation of polarized light are measured upon reflection from

a film-covered surface. The measurements were carried out in situ and permitted determination of the thickness and refractive index of the swollen polymer film at the solid-solution interface. A concentration range of 0.18

to 9.7 mg/ml was studied for polymer with a molecular weight of 76,000. The thickness of the adsorbed film in- creased with increasing solution-concentration, reaching

a plateau for most of the concentration range studied. The average thickness at this plateau was approximately 210 A. The adsorbed film was highly swollen, consisting

of about 12 g/100 ml of polymer for most of the concentration range. The amount adsorbed was determined to be approximately 2.25X10-4 rag/cm1 at the plateau. Comparison of the radius of gyration of polystyrene in solvent

is made to the results obtained. 10 p. (Paper 67A5-232,

p. 431). Melting temperature and change of lamellar thickness with

time for bulk polyethylene, J. J. Weeks

The melting temperature of linear polyethylene has been

obtained as a function of the time and temperature of crystallization. Recrystallization was minimized by a special melting procedure. By interpreting the melting

points as characteristic of a given lamellar thickness, it was found that the thickness of crystals of appreciable age increased linearly with the logarithm of their time of existence. The lowest melting (i.e., thinnest) lamellae

in a given specimen may be assumed to have either exist- ed for dnly a short period of time, or to have been im- pedded in their growth in the chain direction, and they were found to have an estimated thickness close to that predicted by recent kinetic theories of polymer crystal growth with chain folding, lip. (Paper 67A5-233, p. 441). Precise coulometric titrations of potassium dichromate,

G. Marinenko and J. K. Taylor A method has been developed for the precise assay of potassium dichromate by constant-current coulometric ti- tration with ferrous ions generated at a platinum cathode.

It is shown that one-half gram samples of the dichromate can be titrated with a standard deviation of 0.003 percent.

7 p. (Paper 67A5-234, p. 453).

Resolution limits of analyzers and oscillatory systems,

E. L. R. Corliss This paper considers the resolution limits of those analyzers and oscillatory systems whose performance may

be represented by a second-order differential equation. The "signal uncertainty" product A/-Ai is shown to be 31
controlled by the ability of a system to indicate changes

in energy content. The discussion refers the functioning

of the system to a signal space whose coordinates are energy, frequency, and time. In this signal space, the product of the resolution limits, l/=(AE/E,) (A///,) (A;/T„) is the volume of a region within which no change

of state in the system may be observed. Whereas the area element A/-Ai is freely deformable, no operations upon either A/ or At can further the reduction of the ener- gy resolution limit. Thus U is irreducibly fixed by the

limiting value of AE/E0 . By considering the effects of noise upon AE/E0 , and thus upon U, the paper demonstrates the rise of statistical features as signal-to-noise

ratios decrease. Functional relationships derived from AE/E0 and U are tabulated. These equations facilitate computation of the

limits of observable changes of state in a system, and

they provide guidance for the design of experiments to apportion the uncertainties of measurement of transient phenomena as advantageously as possible. A reference

bibliography and appendices giving somewhat detailed proofs are included. 14 p. (Paper 67A5-235, p. 461). Synthesis, purification, and physical properties of seven

twelve-carbon hydrocarbons, T. W. Mears, C. L. Stanley, E. L. Compere, Jr., and F. L. Howard As part of a program to determine accurately the heats

of combustion of specialized fuels in the kerosene range, seven hydrocarbons, biphenyl, bicyclohexyl, cyclohexyl- benzene, rz-hexylbenzene, ra-hexylcyclohexane, 1-cyclo- pentylheptane, and w-dodecane were synthesized or puri- fied from commercial material. Physical constants were

determined on the purified samples. These materials may

have use as secondary standards for heat of combustion measurements. 5 p. (Paper 67A5-236, p. 475).

Reactions of polyfluorobenzenes with nucleophilic rea- gents, L. A. Wall, W. J. Pummer, J. E. Fearn, and

J. M. Antonucci

Nucleophilic reactions of hexafluorobenzene and related polyfluorobenzenes were studied in detail. Reaction of hexafluorobenzene with hydroxides, alcoholates, aqueous

amines, and organolithium compounds led to the substitution of one or more fluorine atoms. The structures of the products were determined, using near infrared and nuclear magnetic resonance spectra. Fluorine is replaced more

readily than chlorine, bromine, iodine, or other groups. In the majority of the products in which two of the fluorines

in hexafluorobenzene were replaced, the substituting groups were para to each other. However, depending on

the reagents other orientation effects were noted. The

reaction mechanisms were a function of reagents and conditions. The most prevalent mechanism is presumably the displacement of a fluoride anion by another anion, probably

via the formation of transition complexes of different life- times. However, simple ionization or attack by neutral species may occur under some conditions. The diazoti- zation and oxidation of pentafluoroaniline were also in- vestigated. 17 p. (Paper 67A5-237, p. 481).

November-December 1963

Analysis of the spectrum of neutral atomic bromine (Br I) Jack L. Tech The spectrum of the neutral bromine atom, Bri, has been newly investigated by using electrodeless discharge tubes as light sources. The observations have led to a

list of wavelengths and estimated intensities for 1253

spectral lines in the range 1067 to 24100 A. The number

of known energy levels has been increased to 123 even and 128 odd levels, as compared with the 27 even and 33 odd levels previously known. All predicted energy levels

of the 4s 2 4p* ns, np, nd, nf electron configurations from

0 to~ 93250 K have been discovered. The observations

in the vacuum ultraviolet establish that the positions of

all the levels lying above those of the ground configuration as given in the compilation Atomic Energy Levels,

Vol. II (1952) should be increased by 6.7 K. All but 26

faint lines of Bn have been classified. A total of 67

levels has been ascribed to the 4s 2 4p* nf configurations.

It is demonstrated that the nf configurations exhibit almost

pure pair coupling. The very regular (

s P2 )n/[5]

0 u/2

series yields for the principal ionization energy of Bri

the value 95284.8 K. 50 p. (Paper 67A6-238, p. 505). Matrices of spin-orbit interaction in the electron configurations np

2 np and np* n p, J. L. Tech

The matrices of spin-orbit interaction in the p

2 p and

p

4 p electron configurations have been calculated. The

matrices have been checked by showing that their eigenvalues, calculated by use of an IBM 7090, agree with the correct eigenvalues known from the theory of //-coupling. For the sake of completeness, the matrices of electrostatic interaction for these configurations are also given.

5 p. (Paper 67A6-239, p. 555). A study of the gas-stabilized arc as an emission source

for the measurement of oscillator strengths. Determination of some relative g/-values for Fei, M.Margoshes

and B. F. Scribner A study has been made of the application of the gasstabilized arc source to the determination of oscillator strengths in atomic spectra. In this source, a solution of

salts of one or more elements may be injected and the elements excited directly in an arc plasma with steady emission of spectral intensities. The source can be

taken to be characterized by local thermal equilibrium, but with a large radial temperature gradient. An experiment

indicates that when two elements are introduced into the arc in a solution, the relative concentrations of the ele- ments in the discharge are the same as in the solution within the probable experimental error. This experiment

indicates one way that the arc may be used for the deter- mination of absolute oscillator strengths. New measure- ments are reported of the^ g/-values of 105 lines of Fei

between 2900 and 4150 A, and the new values are compared with the results of earlier measurements. 8 p. (Paper 67A6-2 40, p. 561).

32
Tritium-labeled compounds IX. Determination of isotope

effects in reactions yielding water-* from nonvolatile

reactants. Oxidation of aldoses-/-! with iodine, H. S. Isbell and L. T. Sniegoski A convenient method is presented for estimating isotope

effects in reactions which yield water-/. The water-r is separated by freeze-dxying, and k*/k is calculated from

the extent of the reaction and the ratio of the radioactivity

of the water-r to that of the initial reactant. Application

of the method to the oxidation of aldoses-l-r at 25 °C

with iodine in alkaline solution gives values for k*/k

ranging from 0.12 to 0.17, with an average of 0.14. There

are no significant differences in the values of k*/k ob- tained for aldoses differing in configuration, or for pentoses and hexoses. The isotope effect corresponds to a ratio of one to seven for the respective rates of reaction of the labeled and unlabeled molecules. 4 p. (Paper 67A6-241

,

P, 569). Buffer solutions of potassium dihydrogen phosphate and

sodium succinate at 25 °C, M. Paabo, R. G. Bates, and R. A. Robinson A buffer mixture consisting of equal molalities (m) of potassium dihydrogen phosphate and sodium succinate is proposed as a useful reference point in the study of acid- base equilibria, bridging the present gap between pH 5.5 and pH 6.8. The p(a H y

C {) at 25 °C has been determined

by electromotive-force measurements for five buffer solutions in which m varied from 0.005 to 0.025. The conventional pa H of each solution has been derived and found

to be in good agreement with that calculated from existing data for the two equilibria concerned. The pan varies from 6.251 at ra=0.005 to 6.109 at to=0.025. The buffer mixture has been used successfully for the determination

of the dissociation constants of 2-nitro-4-chlorophenol and 2, 6-dichlorophenol. 4 p. (Paper 67A6-242, p. 573). Recalibration of the NBS glass standards of spectral transmittance, H. J. Keegan, J. C. Schleter, and M. A. Belknap

In 1934, Gibson, Walker, and Brown developed sets of

four colored glass filters to serve as working standards

of spectral transmittance for checking the reliability of spectrophotometers. Several sets of these glasses were measured carefully and reserved and designated as future reference standards. Duplicate standards evaluated by comparison with the reference standards are available by purchase to the public. The current set of reference standards was established in the years 1945 to 1947, and one

of these reference standards (selenium-red) was recali- brated in 1952. This paper reports a recalibration, made

in 1961 and 1962, of all four glasses (selenium-red, carbonyellow, copper-green, cobalt-blue) on three spectrophoto- meters (Cary 14, Beckman DU, Konig-Martens). Except

for the cobalt-blue standard, the values of spectral trans- mittance found differ from those previously assigned by amounts differing at some wavelengths by as much as or slightly more than the uncertainties estimated for the present values, though not by amounts exceeding the combined uncertainties of the present and previous determinations. The indicated changes for these three standards

are fairly regular, however, and support the view that the

selenium-red and carbon-yellow standards are changing

chiefly by formation of a reflectance-reducing film on the surfaces. The indicated rate of upward drift is slow, and

suggests that it takes about 10 years for the drift to ex- ceed the assigned uncertainty. 8 p. (Paper 67A6-243,

p. 577). Thermal behavior of muscovite sheet mica, S. Ruthberg The three spectral types of muscovite sheet mica, i.e., very pink ruby, light green, and dark green, were subjected

to heat treatments at temperatures up to 600 ° C. The

changes in the apparent optic axial angle and in the absorption spectra (0.3 to 15/x) were studied along with

color. The differentiation of muscovite sheet according to these spectral types extends to the behavior of apparent

optic axial angle and to certain regions of the spectrum

under heat treatment. The pink associated absorption

region (0.47 to 0.6 fi) can be enhanced or bleached away

by appropriate thermal treatment, although the associated

infrared multiplet at 3 to 3.5 /x is little affected. The

absorption band at 12 pi increases in intensity with temperature of treatment. It is suspected that the 0.47 to 0.6 fi absorption is the result of color centers. 6 p. (Paper 67A6-244, p. 585). Absolute configuration and chemical topology, S.J. Tauber The stereochemistry , of catenanes, knotted molecules, and Borromean rings is discussed. An augmentation of the Cahn-Ingold-Prelog convention for designating absolute configuration is proposed. A convention is proposed

for designating the absolute configuration of knotted molecules. A suggestion is made concerning the citing of the absolute configuration of molecularly dissymmetric

diastereomers. 9 p. (Paper 67A6-245, p. 591).

Reversibility of polyester adsorption on glass, R. R. Stromberg and W. H. Grant The adsorption of poly (ethylene o-phthalate) from chlo- roform solution on glass powder and aluminum oxide was

studied. The adsorption of a number of fractions, varying

in number average molecular weight from 970 to 6250 showed a decrease in the moles of polymer adsorbed with increase in molecular weight. The results are interpreted

to indicate that this polymer molecule lies in a relatively flattened conformation on the glass surface. More polymer was adsorbed on glass powder at 50 °C than at 0 ° C. Adsorption on glass powder that had been outgassed to remove adsorbed water was less than on untreated glass.

Initial adsorption at one temperature followed by exposure

at the other temperature resulted in complete reversibility

of sorption on the untreated glass. Decreasing the temperature from 50 to 0 °C resulted in desorption from the outgassed glass, but increasing the temperature did not

result in additional adsorption. These differences are ascribed in part to adsorption across an adsorped water layer on the untreated glass. An explanation for the "onedirection reversibility" observed for the outgassed glass

is presented. 6 p. (Paper 67A6-246, p. 601). 33
Chemical purity by dielectric cryometry, G. S. Ross and

L. J. Frolen A consideration of the deficiencies in standard methods

used for the cryometric determination of purity has led to a new approach in which the measurement of an intensive

rather than an extensive property is the controlling factor. This method, measurement of the dielectric constant as a function of the fraction melted and correlation with the accompanying change in temperature, allows calculation

of purity with high precision. The apparatus used and

experimental work performed to ascertain the scope of the method are described. Determination of purity for or- ganic compounds with differing polarizabilities and dipole moments indicate a rather wide applicability of the method. The large change in the dielectric constant of a high purity compound as it passes from solid to liquid state, with an accompanying small change in temperature, may allow automatic control of temperature within extremely narrow

limits. 8 p. (Paper 67A6-247, p. 607). Adsorption, desorption, resorption, W. V. Loebenstein The complete cnaracterization of batch adsorption from

solution, desorption, and related phenomena have been

interpreted in the light of a general equation. The forward and reverse adsorption -rate constants and the adsorptive

capacity comprise the only parameters. Where adsorption alone is of importance and the desorption-rate constant can be neglected, a simplified form of the theory results

in a special equation which may suffice for most adsorption purposes. In either case, the characteristic para- meters are determinable from the data and serve as criteria

for comparing similar systems. The theory has been confirmed by the data of various investigators taken from the

literature. The parameters derived from column adsorption

are in agreement with the corresponding batch-derived parameters. The limitations as well as the capabilities

of the theory are presented; but even where deviations

from the assumed model exist, the results are useful. 10 p. (Paper 67A6-248, p. 615). Color phenomena in polymer fracture, S. B. Newman and

I. Wolock

Thin layers derived from the matrix are produced in the

fracture of some polymers prior to ultimate failure. A

certain amount of the evidence would indicate that these

layers consist of an oriented array of molecules. Fracture

isolates these molecular segments in a thin film with physical properties differing from that of the matrix in which they originated. These films produce interference phenomena which in some cases are useful in elucidating

structure and origin. 14 p. (Paper 67A6-249, p. 625).

TITLE PAGE AND CONTENTS TO VOL. 67. 6 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SEC- TION A. PHYSICS AND CHEMISTRY, VOLUME 68, JANUARY -DECEMBER 1964

January-February 1964 Fast neutron dose measurements for a D-D neutron Source in water, W. B. Beverly and V. Spiegel, Jr. The penetration of D-D neutrons in water has been

through measurements of first collision dose. A relative measurement of first collision dose as a function of distance from the neutron source was made at 0°. At

large penetrations the results appear to approach asymptotically the slope predicted by the theoretical calculations of Goldstein et al. [6] for a monoenergetic,

isotropic 4.0-Mev neutron source in water. However as expected, the measurements close to the source where

the average neutron spectrum is relatively soft indicate

a steeper slope than the theoretical calculation. Further

calculations will be required to obtain an explicit check

of this experiment. 4 p. (Paper 68A1-250, p. 1). X-ray spectrometric analysis of noble metal dental

alloys, B. W. Mulligan, H. J. Caul, S. D. Rasberry, and B. F. Scribner The analysis of noble metal dental alloys for the various constituent elements is a difficult and tedious

task by chemical or fire assay procedures. X-ray spec- troscopy offered the possibility of increased speed,

especially if solid metal samples were employed. This

technique was investigated particularly with respect to the analysis of dental alloys having the nominal composition in percent, of gold 72, silver 12, copper 10, platinum 2, palladium 2, and zinc 2. Alloys were pre- pared by melting the component elements in a high fre- quency furnace and casting the metal into disk form. Composition of the castings were determined by chemical

analysis. Optimum procedures for casting the sample

and for X-ray analysis were established, and analytical curves were developed relating concentrations to measured intensities of the X-ray lines Au L)3, Ag Ket, Cu

Ka, Pt La, Pd Ka, and Zn Ka . The observed typical

coefficients of variation for the method were Au 0.34

percent, Ag 9.44 percent, Cu 2.2 percent, Pt 1.6 percent, Pd 1.2 percent, and Zn 0.72 percent. The results indicate that the method is sufficiently accurate and

has marked advantages of speed and simplicity compared to chemical analysis. 4 p. (Paper 68A1-251, p. 5)- The first spectrum of manganese, Mn I, M. A. Catalan,

W. F. Meggers, and O. G. Riquelme

In 1894, two short series of threefold spectral terms were discovered in the arc spectrum of manganese, and

in 1922 other regularities involving fivefold and sixfold terms were discovered by Catalan who coined the word

"multiplet" for the group of related lines resulting from combinations of such complex terms. Multiplet analyses

of complex spectra promptly led to the present formal quantum interpretation of all such phenomena, but comparable progress in the analysis of the Mn i spectrum was handicapped by the paucity of experimental

data. New observations of about 2500 wavelengths and

intensities plus 440 Zeeman patterns made available in

34
1948-49 have now been completely exploited to derive

additional atomic energy levels and thereby explain more

of the observed Mm lines. The result is that a total of 42 even terms with 125 levels and 60 g-values have now

been designated and allocated to electron configurations, and 94 odd terms with 266 levels, 164 g-values, plus 13 miscellaneous levels. These terms are distributed among

four multiplicities (doublets, quartets, sextets, octets), and transitions between even and odd terms account for more than 20^0 lines ranging in wavelength from 1785 A

to 17608 A. 51 p. (Paper 68A1-252, p. 9). Transition probabilities of forbidden lines, R.H. Garstang

This paper describes calculations of the transition probabilities of forbidden lines (magnetic dipole and

electric quadrupole radiation) of laboratory and astro- physical interest. Results are given for Ti ill, Cr n, Criv, Mn v, Mnvi, Fevi, Fevn, Nil, Cu n, Ga i, Ge i, Ge n, As I, As m, Se i, Br i, Br n, Kr n, Kr in, Rb in, In i, Sn i, Sn n, Sb i, Sb ill, Te I, I I, I II, Xe n, Xe in, Cs in, Hg ii, Tl i, Pb I, Pb n, Bi I, Bi n, Bi in, Po i, and Rn ii. 13 p. (Paper 68A1-253, p. 61). Franck-Condon factors to high vibrational quantum numbers III: CN, R. W. Nicholls Franck-Condon factor arrays have been computed numerically to high vibrational quantum numbers for the red (A2 II,-X2 2

+

) and violet (B 2 S

+ -X2 S+) band sys- tems of CN. 4 p. (Paper 68A1-254, p. 75). Infrared absorption spectrum of nitrous oxide (N 2 0) from 1830 cm-' to 2270 cm-i, E. K. Plyler, E. D. Tidwell, and A. G. Maki The frequencies of the vibration-rotation spectrum of N 2 0 have been measured from 1830 cm-i to 2270 cm-i. A number of weak bands have been measured and as- signed to "hot bands" and isotopic species in normal abundance. By using the Ritz principle and previously measured bands the bending frequency (v 2 ) is calculated

as 588. 780 cm-1 . Frequencies are given for lines arising from the three ptincipal transitions found in this region.

8 p. (Paper 68A1-255, p. 79). An absolute light scattering photometer: II. Direct determination of scattered light from solutions, D. Mclntyre The light scattering photometer recently described in this journal by Mclntyre and Doderer has been examined

to determine its ability to measure the absolute scatter- ing of liquids. The absolute scattering of polymer solutions was determined from transmission measurements

and from two different transverse measurements. The

experimental results are in good agreement. The vari- ables of the photometric system were also analyzed and

experimentally studied to determine its ability to measure

absolute scattering of liquids under different geometrical

arrangements. 10 p. (Paper 68A1-256, p. 87). High pressure microscopy of the silver and cuprous

halides, A. Van Valkenburg Using a diamond pressure cell and a polarizing microscope, visual observations were made on the transformations of silver and cuprous halides at calculated pres- sures up to 125 kilobars. A new birefringent phase was

observed in silver iodide at 2400 bars. Four phases were

observed in Cul and CuBr while CuCl appeared to have

only three. 7 p. (Paper 68A1-257, p. 97). Lattice parameters and lattice energies of high-pressure polymorphs of some alkali halides, C. E. Weir and

G. J. Piermarini Lattice parameters of the high-pressure forms of the

alkali halides were determined. The lattice parameters were used to compare the lattice energies of the NaCl

and CsCl type structures at the transition pressure. An

analysis of the effect of experimental uncertainties on

the calculated lattice energies showed that in almost

every instance the Born-Mayer theory adequately accounts

for the lattice energy of the high-pressure structure. 7 p. (Paper 68A1-258, p. 105). Calculation of the higher order dipole-dipole effect in paramagnetic crystals, P. H. E. Meijer This report is an attempt to investigate the influence

of dipole-dipole coupling in a paramagnetic spin system

at low temperatures. It consists of two parts. The first part is a discussion of the use of Cm=Cfj- 0 for a system

with mutual interaction. It is pointed out that only if the external field is large compared to the internal field is this equation correct. The other part consists of a calculation of higher order

correction of the dipole-dipole interaction on a system of paramagnetic spins which is subject to a crystalline

field which we chose of the Y 2t0 type. The total Hamiltonian consists of a spin Hamiltonian in accordance with

this symmetry, a term representing the external magnetic

field and the dipole-dipole interaction between the spins. The partition function is calculated by means of the Schwinger trace formula considering a representation in which the first two terms of the Hamiltonian are diagonal. The trace of the density matrix can be expressed as the

trace of a product, one factor is the density matrix of the noninteracting spins, the other factor consists of a sum of commutators. These commutators are worked out

in detail and the result is given in the form of a finite series over the quantum number m. There seems to be

no obvious way to perform these summations. 7 p. (Paper 68A1-259, p. 113). Second and third virial coefficients for hydrogen, R. D. Goodwin, D. E. Diller, H. M. Roder, and L. A. Weber Second and third virial coefficients for parahydrogen have been derived from closely spaced PVT data from 24 to 100°K. They are in good agreement at 100°K with published data for normal hydrogen. Analytical repre- sentations of the combined data from about 20 to 423°K

are presented which may be useful in computation of thermodynamic functions of the gas. These formulas

are related to those resulting from the use of theLennardJones potential. 6 p. (Paper 68A1-260, p. 121). Heats of solution, transition, and formation of three

crystalline forms of metaboric acid. M. V. Kilday and

E. J. Prosen The three crystalline forms of metaboric acid HB02 were prepared, purified, and analyzed. Heats of solution
in water or of reaction with sodium hydroxide solution were compared with those of orthoboric acid H3 B03 (c). The best values for the heats of transition at 25°C are:

(c,I) to (c,II), 2.33 + 0.23 kcal/mole; (c,II) to (c,III), 1.3010.05 kcal/mole; (c,I) to (c,III), 3.63 + 0.24 kcal/

mole. The following heats of formation at 25°C were

derived: -192.77+0.35 kcal/mole for the cubic HB02 (c,I), -190.43 ±0.34 kcal/mole for the monoclinic HB02 (c,II), and -189-13 ±0.34 kcal/mole for the orthorhombic HB02 (c,III). lip. (Paper 68A1-261, p. 127).

March-April 1964 Tritium-labeled compounds X. Isotope effects in the oxidation of aldoses-/-; with bromine, H. S. Isbell and

L. T. Sniegoski

Tritium isotope effects have been used in bromine oxi- dation studies of aldoses to evaluate two reaction paths

previously postulated by Isbell and Pigman, namely, di- rect oxidation and oxidation after anomerization. Be- cause the former path involves a primary isotope effect

(k* /k=0.14, approximately) and the latter a secondary

effect (k*/k=0.80, approximately) it was found possible

to evaluate the relative importance of the two reaction paths from the overall isotope effects, which ranged from

0.20 to 0.59- Under the conditions reported, the direct oxidation for the axial anomers ranges from 38 percent for a-D-galactose

to 94 percent for a-D-lyxose. Differences in the proportion of the anomer oxidized by each of the two paths are explained by variations in the free energy required for reaching the respective transition states. Aldoses of high conformational stability having an axial Cl-hydroxyl group resist the change in conformation necessary for direct oxidation and react in large measure through a change in configuration (anomerization). Aldoses of lower conformational stability having an axial Cl-hydroxyl group react largely through a change in conformation, because this path does not have a high energy barrier. The equatorial anomers of d -glucose-/-/ and maltose-/-/ showed isotope effects of 0.32 and 0.23, respectively in comparison with a value of 0.14 previously found for the oxidation of aldoses-/-/ with iodine in alkaline solution. The isotope effect in the oxidation of d -glucose-/-/ with D-glucose oxidase at 30°C was found to be 0.15- These

strong isotope effects are in accord with the rupture of the CI to H bond in the rate-determining step. The following reactions gave the values for k*-/k cited

in parentheses: D-glucose-/-/ + NaCN (0.83); D-glucose-/- C

14 +NaCN (1.00); d - glucose-/-/ + N aBH 4 (0.73); D-mannose-/-/+phenylhydrazine (0.83); and D-mannose-/- C

14 + phenylhydrazine (0.95). The values of k*/k are typical of aldose reactions involving rate-determining isomerization of the pyranose structure. The isotope effects were measured by a double-label method and by a newly developed method based on the radioassay of water evolved in the reaction. 7 p. (Paper 68A2-262, p. 145). Thermal degradation of fractionated high and low molecular weight polyisobutylene, D. Mclntyre, J. H. O'Mara, and S. Straus A series of thermal degradation studies on polyiso- butylere has been carried out at relatively low degradation temperatures using samples of high purity, both frac- tionated and unfractionated, and of both high and low

molecular weight. Rate curves of the high molecular

weight polymer show maximums while those of the low

molecular weight polymer show large initial rates which

steadily decrease with increased volatilization. Rates of degradation of all samples become similar with increased

volatilization. Rate studies indicate strong random initi- ation with the initial rate of volatilization showing very

little dependence on molecular weight. The drop in molecular weight with increased degradation and the lack

of broad maximums at moderate values of conversion shows the influence of an appreciable amount of transfer and a low kinetic chain length. The rate of degradation

is found to be much faster than that of polypropylene or polyethylene probably because polyisobutylene dispro- portionates and forms radicals more easily. Equations

are suggested for these degradation reactions. 5 p. (Paper 68A2-263, p. 153). Ionization constants of the six dichloroanilines and the

six dichlorophenols in aqueous solution at 25°C,

R. A. Robinson The thermodynamic ionization constants of the six dichloroanilines and the six dichlorophenols in aqueous

solution at 25°C have been determined by the spectro- photometric method. The pK values found are recorded

in table 3 An approximately linear relation is found to exist be- tween the pKA value of a dichloroanile and the pKp value

of the corresponding dichlorophenol. The relation is pKA = 9.047+ 1.401 pKP . This equation yields pKA values which differ from the observed by not more than 0.06 pK unit and, on the aver- age, by 0.03 pK unit; it applies even when both substi- tuents are in the ortho position. 6 p. (Paper 68A2-264,

p. 159).

Stereoregularity in ionic polymerization of acenaphthylene, V. M. Story and G. Canty

Four distinct polymers were isolated from the poly- merizations of acenaphthylene initiated by boron tri- fluoride and rz-butyllithium. A syndiotactic or isotactic conformation was assigned to these products on the basis

of infrared and NMR evidence. The conformations and

reaction details are discussed. 7 p. (Paper 68A2-265,

p. 165). Dielectric behavior of the film formed on mica cleaved

in moist air, S. Ruthberg and L. Frenkel

Water adsorbed on a freshly peeled mica crystal causes

the loss tangent, D, to increase by 1 to 2 orders of magnitude. The nature of the film is investigated as a function of relative humidity by the measurement of D for the frequency range 100 to 50,000 c/s with a capacitor comprising concentric, parallel, circular electrodes of differ- ent diameter on opposite sides of the dielectric sheet. This geometry is then analyzed as consisting of the two

regions of that within the plates where the electric field, E, is normal to the dielectric plane and that at the edge where tangential E exists. The first is considered in 36
terms of an equivalent circuit for a two layered dielectric. The second is considered in terms of transmission

line concepts. It is predicted and verified that the ad- sorbed film causes the first component to vary as 1// and

the second as \ft where / is the thickness of the crystal. Numerical solutions are used to derive the behavior of

P, R, and C of the adsorbed film itself. D for the normal

direction is ~0.4 and follows a frequency dependency

like fresh snow. Resistivities normal to and parallel to cleavage are considerably different while C is much less

than expected for a surface film. It is suggested that the surface film is not continuous but instead is localized

in patches. 11 p. (Paper 68A2-266, p. 173). On the measurement of dielectric losses and surface conductivity of dielectrics in parallel plane test capacitors, L. Frenkel Thin slabs of dielectric materials are often tested for their dielectric properties in plane parallel plate capacitors. When surface conductivity is present, as for in- stance in freshly split mica, losses not connected with

the bulk of the material arise. The present paper deals

with the general theory of such measurements. The sys- tem is reduced to an assembly of lumped elements super- imposed on distributed transmission lines. The treatment includes the presence of possible airgaps underneath

the plates of the test condenser. It is shown that such

losses depend on the reciprocal square root of the fre- quency. Losses due to this effect cannot be eliminated by guard ring measurement and much of the published

data on the losses in mica must be reexamined in the

light of the present work. Similar considerations may

apply in the case of other materials. 4 p. (Paper 68A2-

267, p. 185). Polymorphism of bismuth sesquioxide. I. Pure Bi 2 03 , E. M. Levin and R. S. Roth

Stability relationships of the four polymorphs of bis- muth oxide have been determined by means of DTA and

high-temperature x-ray studies. The stable low-temperature monoclinic form transforms to the stable cubic form at 730±5°C, which then melts at 825 ±5°C. By controlled

cooling, the metastable tetragonal phase and/or the metastable body-centered cubic (b.c.c.) phase appear at about 645°C. Whereas b.c.c. can be preserved to room

temperature, tetragonal will transform to monoclinic be- tween 550 and 500°C. Tetragonal Bi

2 0 3 , however, is easily prepared by decomposing bismutite (Bi 2 03 -C02 ) at 400°C for several hours. The greatest transition ex- pansion occurs at the monoclinic to cubic inversion, and

cubic Bi 2 03 shows the greatest coefficient of volume

expansion. With exposure to air, Bi 2 03 carbonates and

partially transforms to bismutite and an unknown phase.

7 p. (Paper 68A2-268, p. 189). Polymorphism of bismuth sesquioxide. II. Effect of oxide

additions on the polymorphism of Bi 2 03

, E. M. Levin

and R. S. Roth The effect of small oxide additions on the polymor- phism of Bi 2 03 was studied by means of high-temperature

x-ray diffractometry. Solidus and occasional liquidus temperatures were approximated, so that tentative partial phase diagrams for 33 oxide additions were constructed.

Only the monoclinic and the cubic forms of Bi 2 0 3 were

found to be stable. Other phases, frequently reported by previous investigators, such as tetragonal and bodycentered cubic (b.c.c), were shown to form metastably

from cooled liquid or cubic. An impure b.c.c. phase of distinct but variable composition appeared in systems of ZnO, PbO, B 2 0 3 , A1 2 03 , Ga 2 03 , Fe 2 0 3 , Si0 2 , Ge0 2 , Ti0 2

, and P 2 05

. The impure b.c.c. phase in the systems

with Si0 2 , Ge02

, and Ti0 2 melted congruently about 100°C above the m.p. of Bi 2 03

. The impure b.c.c. phase was formed metastably in systems with Rb2 0, NiO, MnO,

CdO, V2 0 5

, and Nb2 05

; the conditions of formation were

dependent on composition, preparation, and heating schedules. The impure b.c.c. phases, both stable and

metastable, had smaller unit cell dimensions than that

of pure Bi

2 0 3

. 10 p. (Paper 68A2-269, p. 197). Second spectrum of tungsten (W n), D. D. Laun A preliminary report on the second spectrum of tungsten, published in 1938, presented 27 even energy levels and 50 odd energy levels that were derived from 500 W n

lines ranging in wavelength from 1961.43 A to 4348.13 A. The present paper submits data on 62 even levels, 132 odd levels, and 2,173 classified lines of W n, ranging

in wavelength from 1756.6 A to 6219.77 A. The ground

state of the W+ ion is represented by the 6 D 01/i level of a sextet D term arising from the 5^6-s 1 electron configuration, but the level intervals and magnetic splitting factors indicate considerable departure from LS-coupling, suggesting that coupling intermediate between LS and Jj may be more appropriate for the spectrum W n. 46 p. (Paper 68A2-270, p. 207). May-June 1964 Compressibility of natural rubber at pressures below

500 500 kg/cm2, L. A. Wood and G. M. Martin The specific volumes of unvulcanized natural rubber and of a peroxide-cured vulcanizate of natural rubber were measured at pressures of 1—500 kg/cm 2 at temperatures from 0 to 25° C. Observations on mercury-filled dilatometers were made through a window in the pressure

system. No time effects or hysteresis phenomena were

observed. The specific volume V in cm 3 /g over the range studied can be represented by V= V 0i25 \l + A(t-25)\\l + [a25 + k 1 (t-25)] + [p 25 + k 2 (t-25)P 2

\ where P is the pressure in kg/cm 2

, and t the temperature in °C. The constants for the unvulcanized and for the peroxide-cured samples are: Vq.ts = 1-0951 and 1.1032 cm 3/g;

10 4 A = 6.54 and 6.36 per degree;

10 6a 25 = -50.5 and -50.4 (kg/cm 2 )" 1

; 10 6 £j =- 0.227 and -0.203 per degree;

1O 9 0 2S = 10 and 11.5 (kg/cm 2 )"2

; and 10 9 & 2 = 0.048 and 0.073 per degree, respectively. The compressibility of unvulcanized natural rubber at 25° and 1 kg/cm 2 is thus 50.5 x 10

-6 (kg/cm 2 )" 1 falling

to 40.6x 10~6 (kg/cm 2

) -1

at a pressure of 500 kg/cm 2

. It 37
is concluded that a low degree of vulcanization produces

no significant changes in the constants listed. The

values are not far different from those obtained by extrapolating to zero sulfur content the observations of Scott on the rubber-sulfur system. Calculations of values

of compressibility (and its reciprocal the bulk modulus),

"internal pressure," bulk wave velocity, difference be- tween specific heats, and several other physical properties are in reasonable agreement with those obtained

by direct observation by other workers. For the prediction of values at pressures above 500 kg/cm 2 the use of the Tait equation is recommended. 10 p. (Paper 68A3-

271, p. 259). A copolymer with lamellar morphology, R. K. Eby

Electron microscopy, together with side- and small- angle x-ray diffraction studies, indicates that copoly- mers of tetrafluoroethylene and hexafluoropropylene are

lamellar. The lamellar development is extensive; the lamellae can be broad and extend for many microns. The

perfluoromethyl groups are incorporated within the lamellae as point defects. 4 p. (68A3-272, p. 269). Variation of glass temperature with pressure in poly- propylene, E. Passaglia and G. M. Martin By measurement of the specific volume of polypropylene as a function of temperature at various pressures,

the variation of glass temperature with pressure, dTg /dP, was determined. Within experimental error the magnitude

of this quantity is the same as the value of TvAa/ACp , where Aa and ACp are the change in coefficient of ex- pansion and specific heat respectively at the glass temperature. This is an indication that thermodynamics can

be applied to the glass transition. The 'value of dTg/dP

is the same as A/3/Aa, where AjS is the change in compressibility at Tg calculated from the data, but it is shown that this equality must follow as a consequence

of the manner in which the experiments were carried out, quite independently of the application of thermodynamics.

4 p. (Paper 68A3-273, p. 273). Perfluorophenyl ether and related polymers, W. J. Pummer and L. A. Wall The syntheses of perfluorophenyl ether and poly(per- fluorophenylene ethers) are described. These materials were prepared by the reaction between potassium penta- fluorophenoxide and hexafluorobenzene in different sol- vents with varying conditions of temperature and pressure. In dimethylformamide or tetrahydrofuran, potassium

pentafluorophenoxide shows little tendency to react with hexafluorobenzene. In methanol, only exchange products such as pentafluoroanisole were observed. No polymers were obtained in these solvents. In water, the reactivity

of pentafluorophenoxide salts was increased greatly, for reaction occurs readily with or without the presence of hexafluorobenzene. The reactions in aqueous systems

are complex and give rise to a variety of products. From

these reactions the following compounds were isolated and identified: perfluorophenyl ether, bis(pentafluoro- phenoxy)tetrafluorobenzene, 2,4,5,6-tetrafluororesorcinol, pentafluorophenoxytetrafluorophenol, and various polyper- fluorophenylene ethers of varying chain lengths. Identification of the smaller molecules was made by chemical,

mass spectrometer, infrared, and nuclear magnetic reso- nance analyses. Poly(perfluorophenylene ethers) were

prepared having molecular weights of 1700, 4300, 6500, and 12,500. A crosslinked polyether of this type was

also synthesized, which had rubbery characteristics above 90°C. 10 p. (Paper 68A3-274, p. 277). Cyclic polyhydroxy ketones II. xy/o-Trihydroxycyclohexenediolic acid and keto-inositols, A. J. Fatiadi and

H. S. Isbell A new crystalline compound, dl -xy/o-trihydroxycyclo- hexenediolic acid (DL-xy/o-pentahydroxy-2-cyclohexen-lone) (I), has been isolated from the products of oxidation

of myo-inositol with nitric acid, and its structure has been established. Compound (I) reduces Tillmans rea- gent, reacts with iodine in neutral or slightly acidic solution, produces a blue color with ferric chloride solution, and exhibits other properties characteristic of an enediolic acid. On catalytic reduction, it gives both scylloinositol and myo-inositol. On oxidation, it yields a new

triketo-inositol, xylo- 4,5,6-trihydroxycyclohexane-l,2,3-

trione (II). Under acidic conditions, catalytic acetylation of I gives two pentaacetates, the infrared spectra of which

are similar but not identical. One of these acetates

exists in two forms, both of which, on deacetylation,

yield the parent acid I. The product formed by deacetylation of the other pentaacetate has not been identified. Benzoylation of I gives a crystalline pentabenzoate. Under basic conditions, acetylation of I proceeds with simultaneous aromatization, resulting in the formation of pentaacetoxybenzene, from which pentahydroxybenzene

is obtained by hydrolysis. xy/o-4,5,6-Trihydroxycyclohexane-l,2,3-trione (II) gives

a crystalline bis(phenylhydrazone). By acetylation under

basic conditions, it yields hexaacetoxybenzene. Mechanisms are presented for the aromatization of keto-inositols by enolization and beta eliminationreactions, and certain observations reported in the litera- ture are rationalized. Infrared and ultraviolet absorption spectra are reported for the new compounds. 13 p. (Paper 68A3-275, p. 287). Tritium-labeled compounds. XI. Mechanism for the oxi- dation of aldehydes and aldoses-/-/ with sodium

chlorite, H. S. Isbell and L. T. Sniegoski Measurements of kinetic isotope-effects (k*/k) for the oxidation of ten aldoses-/-/ with sodium chlorite in acid

solution gave values ranging from 0.56 to 0.75, with an average of 0.66. The values show that the CI—H* bond

is not ruptured in the rate-determining step. For the re- action, a mechanism is proposed which accounts for this fact and for the dependence of the rate of reaction on the concentration of chlorous acid. The mechanism involves

formation of a chlorous acid — aldehyde intermediate;

this decomposes, giving the aldonic acid and hypochlorous acid. The latter then reacts with more chlorous

acid, affording the chlorine dioxide and hydrogen chloride found experimentally. 4 p. (Paper 68A3-276, p. 301). Medium effects on the dissociation of weak acids in methanol-water solvents, E. E. Sager, R. A. Robinson, and R. G. Bates A spectrophotometric method has been used to deter- mine the dissociation constants of o-chloroanilinium 38
ion, m-nitroanilinium ion, and 4-chloro-2,6-dinitrophenol

in methanol-water solvents at 25°C. The ranges of sol- vent compositions (in weight percent methanol) were as

follows: o-chloroanilinium ion, 0 to 99.9; m-nitroani- linium ion, 0 to 93.7; and 4-chloro-2,6-dinitrophenol, 0 to 33.4. The pK of the first two acids falls with addition of methanol and passes through a minimum when the mole

fraction of methanol in the solvent mixture is about 0.7. The pK of the substituted phenol, however, rises as the

dielectric constant of the solvent is decreased by addition of methanol. It is suggested that the total medium

effect for both types of acid can be explained by the superposition of an electrostatic effect and a nonelectrostatic effect. The latter is a constant for each particular solvent composition and probably characterizes

the acid-base property of the medium itself. 8 p. (Paper 68A3-277, p. 305).

Crystallization of anhydrous copper sulfate from sulfuric acid - ammonium sulfate mixtures, P. M. Gruzensky The growth of CuS04 crystals from a nonaqueous sol- vent, composed of (NH4 ) 2 S04 and H2 S04 is described.

Solubility of CuS04 in solvents of varying (NH 4 ) 2 S04 to H 2 S04 ratio, at 200°C, has been determined, as well as

the temperature dependence of the solubility in 0.35 (NH4 ) 2 S04 - 0.65H 2 SO4 . Single crystal specimens,

weighing up to 150 mg have been obtained. 3 p. (Paper 68A3-278, p. 313). Detection of lattice deformation and recovery in epsilon phase silver-tin alloys, R. M. Waterstrat and G. E. Hicho A line-broadening effect has been observed in x-ray

diffraction patterns from powdered epsilon phase silvertin base alloys which have been subjected to cold work. The line breadth is reduced when the alloy ingots have

received a prior homogenization treatment at 400°C and

is also reduced when cold-worked alloy particles are annealed at 100°C. It is shown that the reduction in line breadth which occurs at 100°C is the result of a recovery process which significantly reduces the amount

of internal deformation present in the alloy particles. The presence of internal deformation in these cold-worked

alloy particles has also been associated with a dimensional expansion which occurs when the silver-tin parti- cles are reacted with mercury at room temperature. Spherical alloy powders produced by an atomization process were found to be relatively free of internal de- formation but were not chemically homogeneous. Metallo- graphic and x-ray diffraction data indicated, however,

that the spherical alloy particles can be homogenized by

a high temperature heat treatment. 7 p. (Paper 68A3-

279, p. 317). Vapor pressures of ruthenium and osmium, N. J. Carrera, R. F. Walker, and E. R. Plante The vapor pressures and heats of sublimation of ru- thenium and osmium have been measured using a micro- balance technique based on the Langmuir method. Heats

of sublimation at 298°K were calculated with the aid of free energy functions. Least squares lines for the vapor

pressure data, heats of sublimation, and normal boiling

points were obtained as follows:

(1) Ruthenium: Log Patm = 7.500 -

52,7T

69

(1940 - 2377°K)

Atf s °(298)= 156.1 ±1.5 kcal/mole

bp = 4150 + 100°K

(2) Osmium: Log P atm = 7.484 - ^—(2157 - 2592°K)

Atf s °(298)= 189.0±1.4 kcal/mole bp= 5300± 100°K The indicated uncertainties are estimates of the overall limits of error. 6 p. (Paper 68A3-280, p. 325). The 0—2 transition of CO in condensed oxygen, nitrogen, and argon, S. Abramowitz and H. P. Broida

Infrared absorption spectra of CO in the region of the

first overtone have been observed in dilute (approximately

1 to 10 parts in 1000) liquid solutions of oxygen, nitro- gen, and argon, and clear crystalline nitrogen and argon

matrices. The overtone band was found at 4249.0, 4252.4, and 4252.0 cm

-1 with half widths of 18.4, 17.8, and

13.7 cm in liquid oxygen, nitrogen, and argon solutions

at 82, 78, and 82°K, respectively. The half width in liquid oxygen varied from 18.4 to 10.0 cm

-1

in the temperature range 82 to 57°K. The band position was the same but its width was smaller in the crystalline nitrogen

matrix. Two bands were observed in the clear crystalline argon solid at 4245 and 4256 cm-1

. The solution results cannot be interpreted with the recent theory of Buckingham. 3 p. (Paper 68A3-281, p. 331). July-August 1964 Metallographic characterization of an NBS spectrometric

low-alloy steel standard, R. E. Michaelis, H. Yakowitz, and G. A. Moore The spectrometric standard steel designated NBS LowAlloy Steel 461 was investigated by means of electron probe microanalysis and quantitative metallographic techniques employing a digital computer. Electron probe microanalysis showed the steel to be homogeneous

in nickel and iron at two to four microns of spatial resolution. The average of all determinations agreed with

the certified values for these elements. Inclusions in the steel were identified, classified as to size and shape, and counted. Mean free path data on the inclusions were calculated. The ASTM ferrite grain size number was deduced as 13.5 for the steel in the unetched condition. From the mean free paths in ferrite and pearlite, it was found that the steel is structurally homogeneous at a

five micron level. It is concluded that the homogeneity

level corresponds closely to the grain size of the material. It is further concluded that NBS-461 steel is sufficiently homogeneous that any present microanalytical technique can be carried out with little chance of inaccuracy due to inhomogeneity. 12 p. (Paper 68A4-

282, p. 343). 39
X-ray investigation of strain in cold-worked silver iodide

G. Burley The experimentally observed broadening of certain powder diffraction profiles of cold-worked hexagonal

silver iodide has been graphically resolved into the ef- fects due to small domain size and to lattice strain. The

contribution from the first was found to be negligible, and the total intrinsic broadening is thus due to strain A maximum, or saturation value, of strain is rapidly at- tained and remains invariant with further grinding. The

strain is essentially isotropic, with an average value of 4.4xl0~3

. The calculated stored elastic energy is 154 cal/mole and, by comparison with the calculated

difference in lattice energies of 149 cal/mole, can be

interpreted as an energy barrier for the phase transition from the cubic to hexagonal structure. 4 p (Paper 68A4-283, p. 355). Light scattering measurements on solutions of some

quaternary ammonium salts, S. P. Wasik and W. D. Hubbard The general fluctuation theory for multicomponent sys- tems has been applied in order to make corrections for the charge effect on systems of colloidal electrolytes where the gegenions and simple cations may have any

valence. The basic equations of Prins and Hermans and

Princen and Mysels were used for this derivation. The

aggregation number and apparent charge were calculated

from turbidity measurements on decyl-, dodecyl-,

tetradecyl-, and hexadecyltrimethylammonium sulfate in different concentrations of Na2 S04 , MgS04

, and La2 (SOJ3 solutions and on dodecyltrimethylammonium bromide in the KBr, CaBr2

, and LaBr2 solutions. The data indicate

that the nature and concentration of the gegenion deter- mine the size and charge of the micelle whereas the nature and concentration of the simple cation of the added

electrolyte has little or no effect. 7 p. (Paper 68A4-

284, p. 359). Thermodynamic properties of some methylphosphonyl

dihalides from 15 to 335°K, G. T. Furukawa, M. L.

Reilly, J. H. Piccirelli, and M. Tenenbaum

Measurements of the heat capacity of methylphosphonyl difluoride (CH3 POF2 ), methylphosphonyl dichloride (CH3 P0C12 ), and methylphosphonyl chlorofluoride (CH3 P0C1F) were made from about 15 to 335°K by means

of an adiabatic calorimeter. These highly reactive and

toxic substances were purified in a completely closed

glass apparatus by combining slow crystallization and

fractional melting procedures. The purities determined

by the freezing-curve method are shown to be generally

in agreement with those values obtained by the calori- metric method. From the results of the heat measurements, the triple-point temperature, heat of fusion, and

their corresponding estimated uncertainties were found

to be, respectively, 236.34 ±0.05°K and 11,878 ±12 j/mole

for CH3 POF2 , 306. 14 ± 0.02 °K and 18,076 ±15 J/mole for CH3 P0C12

, and 250.70 ± 0.20°K and 11,853 ±30 J/mole

for CH3 POClF. Triple-point temperatures obtained by

the freezing-curve method are in agreement with the above values. A table of smoothed values of heat capacity, enthalpy, enthalpy function, entropy, Gibbs free energy, and Gibbs free energy function from 0 to 335°K

was obtained from the data. The entropy and its cor- responding estimated uncertainty for CH3 POF2 , CH3 P0C12 , and CH3 POClF in their respective condensed phase at 298.15°K and saturation pressure was found to be 208.3 ±

0.3, 164.8 ±0.3, and 216.4 ±0,4 J/deg mole, respectively. The entropies in the gaseous state at 298.15 °K and 1 atm pressure were found to be 312.7 ±3, 339.7 ±3, and

335.0 ±3 J/deg mole, respectively. 13 p. (Paper 68A4-

285, p. 367). Calorimetric properties of some alkali pentaborate hydrates from 15 to 370°K, G. T. Furukawa, M. L.

Reilly, and J. H. Piccirelli Measurements of the heat capacity of ammonium pentaborate tetrahydrate (NH4 B5 Gy4H2 0), potassium pentaborate tetrahydrate (KBS Gy 4H2 0), and sodium pentaborate pentahydrate (NaB5 Gy 5H2 0) were made in the range of about 15 to 370°K and the data were used to obtain a table of smoothed values of thermodynamic functions from 0 to 370°K. The measurements on sodium

pentaborate pentahydrate were terminated at 345°K be- cause the temperature drifts that were observed above

this temperature were considered to arise from gradual

volatilization of the water of hydration. 9 p. (Paper

68A4-286, p. 381). Rates of adsorption and desorption of polystyrene on chrome surface, R. R. Stromberg, W. H. Grant, and

E. Passaglia The rate of adsorption of polystyrene from cyclohexane solution on chrome ferrotype plates was studied for a concentration range of 10 -1 to 10-4 mg/ml. Two molecular weight fractions of polymers, 76,000 and 38,100, were prepared by the anionic polymerization of styrene tagged with tritium, and a radiotracer technique was used

to measure directly the amount of polymer adsorbed on

the surface. The rate of adsorption is very dependent on

the concentration of the polymer solution, and times

varying from minutes to several hours were required before maximum adsorption occurred for the concentration range studied. The rate of desorption is strongly de- pendent on the adsorbance; it was hypothesized that

this is due to the number of attachments per molecule

also varying with adsorbance. The conformation of the adsorbed molecule as indicated by these results and

those determined by the measurement of the thickness of

the adsorbed layer by ellipsometry is discussed. 9 P- (Paper 68A4-287, p. 391). An iterative unfolding procedure, R. P. Uhlig An iterative procedure for unfolding the effects of the

finite resolution of a detector from an observed pulse

height distribution is discussed. The process is demonstrated for a particular detection system. Convergence

and uniqueness properties of the method are discussed

empirically. A general expression for the propagated error resulting from errors in the detected pulse height distribution is derived. Approximations are made in order to evaluate

the propagated error for a particular detector. These ap- proximations become better as the resolution of the detector improves. The results indicate that the error rapidly approaches a limit of from 1.5 to 3 times the error

in the observed distribution. This limit is reached in 40
approximately three iterations. 7 p. (Paper 68A4-288,

p. 401). Mass spectrometric study of photoionization. I. Apparatus and initial observations on acetylene, acetylene-^, benzene, and benzene-^, V. H. Dibeler and R. M. Reese A windowless vacuum ultraviolet monochromator and mass spectrometer are combined for the study of photoionization processes in the energy range 2000 to 600 A

(6 to 21 eV). Details of the apparatus and techniques of operation are given and results are reported for an initial study of acetylene, acetylene-^, benzene, and benzene- d6

. Ionization energies of 11.406 and 11.416 eV are ob- tained for the 1tt u electron of C2 H2 and C2 D2 , respectively. Vibrational levels of the ground state of the ion are observed with quantum intervals of 1855 cm-I (C2 H2 ) and 1775 cm-1 (C2 D2 ). Ionization energies for the e lg(Tr) electron of C6 H6 and C6 D6 are determined to be 9.242 and

9.24 s eV, respectively. Quantum intervals for vibrational levels of the ground state ions are apparently equal for the two isotopic molecules and estimated to be 800 cm

-1

. A second onset of ionization is observed at

11.

5

6 eV for C6 H6 and at 11.5, eV for C6 D6

. Results

agree well with spectroscopic data. 9 p. (Paper 68A4-

289, p. 409).

September-October 1964 Relaxation modes of trapped crystal point defects: the three-neighbor shells model in NaCl, A. D. Franklin,

A. Shorb, and J. B. Wachtman, Jr. The results of a relaxation-mode analysis are pre- sented for two cases of trapped-defect relaxation in the NaCl structure, in which both defects occupy the same

type of site (e.g., impurity divalent ion and trapped va- vancy), or in which they occupy the two different types

of sites (vacancy pair). The relaxation analysis is pre- sented in the form of a set of basis vectors in occupationprobability space and a set of secular equations. Solutions to the equations provide the relaxation rates and

also the coefficients in the linear combinations of the basis vectors which constitute the relaxation modes.

Calculations of the relaxation rates and contributions

to the polarizability of the various modes for a three-shell model with jump frequencies chosen to represent the re- laxation of an impurity-ion vacancy pair in NaCl(Mn) have

confirmed the results of Lozovskii. Even though the

third shell makes a significant and even large contribution to the process, one mode dominates and the relaxation as seen in a-c measurements would take place with

essentially a single relaxation time. The d-c techniques

of Dreyfus are sensitive enough to detect more than one

of these relaxations at low temperatures, but the slowest

of these will always be the dominant one. Any relaxation slower than the major one must be ascribed to some

other mechanism. 14 p. (Paper 68A5-290, p. 425). Viscosity of a standard soda-lime-silica glass, A. Napolitano and E. G. Hawkins The viscosity of a soda-lime-silica glass has been measured at the National Bureau of Standards and seven

other laboratories. Determinations were made in the range of 10 2 to 10

,s poises. The rotating cylinder was

used at the higher temperatures (800 to 1450°C) and the

fiber elongation method at the lower temperatures (520

to 658°C). The results have been critically evaluated and the glass has been issued as Standard Sample No.

710. This glass is available from the National Bureau

of Standards. 10 p. (Paper 68A5-291, p. 439). Hydrothermal preparation of a gehlenite hydrate E T

Carlson Hydrothermal treatment of synthetic gehlenite (2CaOAl 2 03 Si02

) or of various mixtures of oxides, hydrates,

etc., approximating the composition of gehlenite, at 260

to 650 C, produced a hitherto unreported compound having

the composition 2Ca0-Al2 03 -Si02 -H2 0. Other phases,

usually hydrogarnet, were always present in small amounts. A natural gehlenite containing Fe2 03 and MgO

was partly converted to the same hydrate at 450°C. The

compound 2CaO-Al2 03 -Si02 -8H2 0 was converted to a hy- drogarnet at 250°C, but formed •2CaO-Al2 03 -Si02 -H2 0 at 350 C C. The new compound has a body-centered cubic

structure, with a 0 = 8.83 A. The index of refraction is 1.628. An x-ray diffraction pattern is given, and some

similarities between CaO-Al2 03 -Si02 -H 2 0 and the ternary compound 4CaO-3Al2 03 -3H2 0 are pointed out. 4 p. (Paper 68A5-292, p. 449). Action of water on calcium aluminoferrites, E. T. Carlson The action of water on seven preparations of the cal- cium aluminoferrite solid solution series, ranging in composition from 6CaO-2Al2 03 -Fe2 03 to 2CaO-Fe2 03; was

studied (a) by leaching the powdered preparations with

water, (b) by stirring in a large volume of water at dif- ferent temperatures from 10 to 100°C, and (c) by paste

hydration at 1, 25, and 45°C

The initial reaction occurring immediately on contact between the aluminoferrite and water is one of incongruent solution. The A12 03

, most of the CaO, and a trace of Fe2 03 pass into solution, and a residue of Fe2 03 , possibly hydrated and amorphous, remains. If the suspension

is sufficiently concentrated to give a supersaturated

solution,, a hydrated precipitate will form. At room temperature the major precipitated phase is 2Ca0-Al2 03

' 8H2 0, or a limited solid solution of the same. At 70°C a solid solution of 3CaO-Al2 03 -6H2 0, in which about onetenth of the A12 03 is replaced by Fe2 03

, is precipitated. The rate of reaction increases with temperature and with

the proportion of alumina in the aluminoferrite. Hydration in paste form progresses in a different manner. The hydrogarnet phase produced varies in composition with the parent aluminoferrite, but is always some- what poorer in Fe2 03

. The hexagonal plate phase, 4CaO-

(Al2 03 ,Fe2 03 )-wH2 0 is produced from the aluminoferrites high in Fe2 03 , especially at the lower temperatures. Another platy phase, 2CaO"Al2 03 -8H2 0 (or its limited solid solution) is formed from preparations highest in A12 03

, also at lower temperatures. Intermediate members

give chiefly the hydrogarnet phase even at 25°C. 11 p. (Paper 68A5-293, p. 453). Infrared spectra of the crystalline inorganic borates

C. E. Weir and R. A. Schroeder

Infrared absorption spectra of anhydrous, crystalline, inorganic borates were obtained in the 2000 cm -1

to 41
300 cm -1 range. Compounds with B

10 and B

11 isotopes were prepared to assist interpretation. Spectral bands

for all orthoborates and pyroborates and some metaborates could be assigned satisfactorily. Borates with complex ring-type anions generally exhibited spectra of such complexity that only superficial interpretation was

attempted. From correlations between spectra and structure it appears that boron in 3-fold or in 4-fold coordination can be identified with reasonable assurance on the basis of the infrared spectrum alone. Absorption bands

are tabulated for about 80 borates and typical spectra

are shown. 23 p. (Paper 68A5-294, p. 465). Effect of pressure and temperature upon the optical dis- persion of benzene, carbon tetrachloride and water, R. M. Waxier, C. E. Weir, and H. W. Schamp, Jr. An interferometer has been used to measure the change

in index of refraction with change in pressure or temperature. Absolute indices of refraction are reported to five decimals for benzene, carbon tetrachloride, and water at eight different wavelengths in the visible region of the spectrum at pressures as high as 1100 bars and temperatures as high as 55°C. The data for benzene and carbon

tetrachloride have been fitted to one term, dispersion equations of the Drude and Lorentz-Lorenz types. The

observed changes in index of refraction for these two liq- uids have been attributed to change in density plus a

shift in the fundamental absorption frequency, assuming

that the oscillator strength remains constant. The data

for water have been treated and explained in the same

manner but with the additional postulate that water consists of two different molecular types. 10 p. (Paper 68A5-295, p. 489). Some changes in double-bond structure during the vul- canization of natural rubber, F. J. Linnig, E. J. Parks, and J. E. Stewart

Near-infrared studies indicate the absence or near- absence of isolated cis and terminal double bonds in rubber vulcanized either with or without accelerators, as well as in the squalene-sulfur reaction product. The

use of purified natural rubber indicates a new absorption near 6.1 /i on reaction with sulfur, either with or without

accelerators in the rubber system. This new absorption may be due either to a double bond with an attached sulfur atom or to conjugated double-bond systems that do

not react readily with maleic anhydride. Ultraviolet spectra of chromatographic fractions show that squalene

that has reacted with 15 percent of sulfur contains conjugated trienes, tetraenes, and possibly dienes, hexaenes,

and heptaenes. The conjugated dienes, trienes, and

tetraenes are probably present in sufficient proportions

to account for a significant portion of the band at 10.4 /x. There is some evidence that the trienes and tetraenes,

at least, may be largely all-trans in configuration. Other

contributors to the band at 10.4 fi ate possibly isolated,

trans double bonds and heterocyclic sulfur structures along the chain. 13 p. (Paper 68A5-296, p. 499). Dislocations in polymer crystals, H. D. Keith and E. Passaglia The role that dislocations are likely to play in chainfolded polymer crystals is examined, particularly with

regard to their influence on plastic deformation. It is assumed that primary bonds cannot be broken in back- bone molecular chains; and this restriction, together with further restrictions brought about by chain folding,

limits substantially the number of permissible dislocations and glide processes. It is shown that deformations

of appreciable magnitude in chain-folded polymer crystals almost certainly cannot be attributed solely to dis- location mechanisms. Crystals of the rc-alkanes and "ex- tended chain" polymer crystals are also discussed briefly. 6 p. (Paper 68A5-297, p. 513).

Dependence of mechanical relaxation on morphology in isotactic polypropylene, E. Passaglia and G. M. Martin The shear modulus and logarithmic decrement at ap- proximately 1 c/s have been measured from -180°C to about 150°C for a series of samples of isotactic poly- propylene prepared by various thermal treatments. The

samples had varying densities (degrees of crystallinity) and morphologies as characterized by spherulite size. All of the samples exhibited the three relaxations characteristic of polypropylene. The maxima in the three measures of relaxation (logarithmic decrement, G", and

/") occur at about -60°C, 0 - 10°C, and 50 to 100°C for the three processes. However, the relation between

crystallinity and the magnitude of the peak value of the particular measure of loss depends upon the relaxation and the function used to measure the loss. The loss is almost independent of density and morphology for all three relaxations when G" is used to characterize the

loss, whereas the loss increases monotonically as the density decreases when using /" to characterize the loss behavior. The logarithmic decrement behaves in a more complicated manner. The implications of this be- havior are discussed, and it is shown that the primary

effect of changing density is to change the equilibrium modulus rather than the relaxation processes. 9 p. (Paper 68A5-298, p. 519). Precision density measurement of silicon, I. Henins The densities of 22 large highly perfect silicon single crystals have been measured by hydrostatic weighing in water, yielding an average value of

</pi (25°C) = 2.329002 1(7 x 10- 6 )g/cm3

. An experimental precision has been achieved which ex- ceeds the accuracy with which the absolute density of water is known. The effect of variations of the water

surface tension force on the suspension wire has been minimized by using a 0.001 in. suspension wire coated

with platinum black, and by doing a large number of re- peated weighings of each crystal. 5 p. (Paper 68A5-

299, p. 529). Franck-Condon factors to high vibrational quantum numbers IV: NO band systems, R. W. Nicholls Franck-Condon factor arrays have been computed nu- merically to highest known vibrational quantum numbers

for the following NO band systems. 42
yS: (B-II-X 2II) Feast 1: (D^-A'S*)

y: (A*2+-X*II) Feast 2: (E 2 2

+ -A2 2

+

) S: (C 2II-X 2 II) Ogawa 1: (B'2 A-B2II) e: (D J S

+ -XJ II) Ogawa 2: (fc4 2

+ -fl4II) (B'2 A-X2II) "M": («

4 II-X 2II) y': (E 2 S

+ -X2 II) p. 6. (Paper 68A5-300, p. 535).

The 1962 He3 scale of temperatures. I. New vapor

pressure comparisons, 3 S. G. Sydoriak and R. H. Sherman A comparison of He 3 vapor pressures, (Pi , P4

), has been made in an apparatus designed to reduce the number and magnitude of corrections associated with the refluxing film in the He" pressure sensing tube and the attached bulb. The critical pressure of He 3 has been

redetermined to be at 873.0 ±1.5 mm Hg at 0° C and

standard gravity; the corresponding temperature as measured by a He4 thermometer is 3.3240 + 0.0018° K on

the 1958 He4 scale. These (P 3 , PJ comparisons and

the 1958 He4 scale are the basis of the 1962 He 3 scale

of temperatures derived and evaluated in the papers

following this one. Empirical interpolation equations containing only P3 and P4 are described by means of which existing P4 measurements may be converted to an equivalent P 3

. A

comparison has been made between this interpolation and a conversion in which the 1958 He4 and 1962 He 3 scales are used as parameters. Deviations between the two procedures are within the estimated errors of the (P3 , PJ measurements.

In subsidiary experiments on techniques for He4 ther- mometry a typical vapor pressure bulb arrangement was

tested. It is shown that the refluxing film introduces a heat flux, Q/, and a resulting Kapitza temperature drop, AT^, between the He n and its container, which may

amount to many millidegrees. The feasibility of calculating ATfe for a particular He4 vapor pressure bulb was studied. The necessity of measuring AT^/Qy at least once in situ is pointed out.

In addition, it is necessary to redetermine the film flow

rate periodically at the same time that He4 vapor pressure measurements are being made. lip. (Paper 68A6-

301, p. 547). The 1962. He3 scale of temperatures. II. Derivation,

S. G. Sydoriak. T. R. Roberts, and R. H. Sherman An Experimental Thermodynamic Equation (ETE)

temperature scale valid from 0.2 to 2.0° K has been

calculated for He 3

. The scale is based on new comparisons, (P } , P4

), of He 3 and He4 vapor pressures above

0.9° K; on the 1958 He4 temperature scale; and on the best available data for several thermodynamic properties

of He3 from 0.2 to 2.0° K. The T62 Full-Range Working Equation (FWE) scale,

In P3 = 2.49174/7 + 4.80386 - 0.286001 T

+ 0.198608 T

2 - 0.0502237 T

3 + 0.00505486 T* + 2.24846 In T

fits the ETE scale and the (PyTss

) data and is therefore valid for use from 0.2 to the critical point, 3.324° K. The maximum deviation from the ETE scale is 0.4 mdeg

and the standard deviation from the input data is 0.25 mdeg. The fit to the seven recalculated isotherms of Keller in the range of the 1962 He 3 scale can be deter- mined by converting Keller's P4 's to equivalent P3 's, using direct P4 to P 3 interpolation equations. The fit of the 1962 He 3 scale is as good as the fit of the 1958 He4 scale to the same isotherms, the average displace- ments of the two scales both being 1.5 mdeg below the isotherms. The average standard deviations for (Tg2 — T^J and for (T

58—T.

sJ

are 1.2 and 1.0 mdeg, respectively, for these seven isotherms. 7p. (Paper 68A6-

302, p. 559). The 1962 He 3 scale of temperatures. III. Evaluation and status, T. R. Roberts, R. H. Sherman, and S. G. Sydoriak

In this third paper the 1962 He 3 Scale of Temperatures

is evaluated both as to its precision and its deviations

from the thermodynamic Kelvin Scale. Various thermo- dynamic quantities of He 3 consistent with the 1962 He 3 Scale are derived and listed. The correction to an observed vapor pressure for small amounts of He4 is discussed and tabulated. A description is given of the method of multiple variable least squares analysis used

for deriving the final scale equation and for re-analysis

of isotherm data. Finally the present status of the 1962 He 3 Scale is discussed along with some considerations

for the future. 12 p. (Paper 68A6-303, p. 567.) The 1962 He 3 scale of temperatures. IV. Tables, R. H. Sherman, S. G. Sydoriak, and T. R. Roberts The detailed tables of the 1962 He 3 Scale of Temperatures are presented. The vapor pressure of He 3 is tabulated in steps of 1 millidegree from 0.2 to 3.324° K, the

critical temperature. A table giving temperature, to 0.1 millidegree, as a function of pressure is included, as

well as the temperature derivative of the vapor pressure.

10 p. (Paper 68A6-304, p. 579).

Absolute isotopic abundance ratio and the atomic weight

of a reference sample of copper, W. R. Shields. T. J. Murphy, and E. L. Garner An absolute value for the isotopic abundance ratio of a reference sample of copper has been obtained by thermal emission mass spectrometry. Samples of known abun- dance ratio, prepared from nearly pure separated copper

isotopes, were used to calibrate the mass spectrometers. The results yield an absolute value of Cu63 /Cu" =

2.2440 + 0.0021 and an atomic weight of 63.54555 ± 0.00040 (C 12 =12). The indicated uncertainties are overall limits of error based on 95 percent confidence limits

for the mean and on allowances for the effects of known

sources of possible systematic error. A companion study of the Cu63 /Cu65 ratio in natural materials has shown that there is significant variation

in some rare secondary minerals. 4 p. (Paper 68A6-

305, p. 589). 43
Absolute isotopic abundance ratio and the atomic weight

of bromine, E. J. Catanzaro, T. J. Murphy, E. L. Garner, and W. R. Shields An absolute value is obtained for the isotopic abun- dance ratio of bromine using thermal emission mass spectrometers calibrated for bias by the use of samples of known isotopic composition prepared from nearly pure

separated bromine isotopes. The resulting absolute

Br70 /Br61 ratio is 1.02784 ± 0.00190 which yields an atomic weight (C 12 = 12) of 79.90363 ± 0.00092. The indi- cated uncertainties are overall limits of error based on

95 percent confidence limits for the mean and allowances

for the effects of known sources of possible systematic

error plus a component to cover possible natural variations in isotopic composition although no provable vari- ations were noted among the Br"/Br81 ratios of 29 commercial and natural samples. Mass spectrometric

determinations of the atomic weights of bromine and

silver give a combining weight ratio of AgBr/Ag =

1.740752. 7 p. (Paper 68A6-306, p. 593). Optical properties of thin films on transparent surfaces

by ellipson.etry; internal reflection for film covered

surfaces near the critical angle, E. Passaglia and

R. R. Stromberg The application of ellipsometry to the determination of

the optical properties of thin films on transparent substrates by the use of internal reflection and angles of incidence near the critical angle for total reflection is described and illustrated. Four cases are considered:

1. the angle of incidence, 0 ;

, is less than either the criti- cal angle for total reflection between the substrate and

the film, 6 C

1,2

, and the critical angle between the substrate and the surrounding medium, d c

1 - 3

; 2. dc

1,3 > 6i>dc

1 ' 2

; 3. 6c

1- 3 <6i<6c U2

; and 4. 6c

l' 3 <6i> dc u2 - For case 1, at certain critical values of film thickness d

and refractive index n2

, the reflected light may be polarized with its electric vector either entirely in or normal to the plane of incidence. Near these conditions

the sensitivity of ellipsometric measurements is ex- tremely high, but the intensity of the reflected light is very low. Except under these conditions the intensity is adequate for experimental measurements, as it is also in case 2. For case 1 it is always possible to determine

n2 and d by a single measurement; for case 2 this is possible only for thin films. For cases 3 and 4, and case 2 for thick films, only one of these may be deter- mined. Under these conditions, however, the reflectivity

is 100 percent. 10 p. (Paper 68A6-307, p. 601). On the second-order transition of a rubber, E. A. DiMarzio The view that the glass transition has a thermody- namic basis is extended to a cross-linked rubber. The

elevation of the second-order transition temperature as a function of the number of cross-links is found to be (T(X)- T(0))/T(0)= KX/1 - KX, where T(X) is the transition temperature for a rubber with degree of cross-linking

X. The constant K is to first order independent of material. Also a relation involving no adjustable parameter is derived for the ratio of second-order transition temperatures to deformation. It is T(X)/T(1) = exp

(G(SA !

- 2 -3)/2ACp T0 ) where ACp is the value of the specific heat discontinuity per cm3 at the transition and T0 is the temperature at which the modulus G is measured.

Available experimental evidence from five separate in- vestigations agrees with these predictions. 7 p. (Paper

68A6-308, p. 611). Ionization constants and reactivity of isomers of eugenol,

G. M. Brauer, H. Argentar, and G. Durany To determine the scope of the reaction of zinc oxide

with isomers of eugenol, the effect of changes in the position of the substituents in the benzene ring on the

ionization constants and reactivity of these isomers has

been studied. The ionization constants of eugenol isomers as well as those of newly synthesized allyl- and propenylbenzoic

acids were determined by spectrophotometric and potentiometric techniques. The influence of inductive, reso- nance and steric effects of the substituents on the ioni- zation constants has been discussed and the substituent constant for the Hammett equation pK0 — pK = op has been

calculated. For the 4- and 5-substituted allyl and pro- penyl derivatives, the Hammett equation is valid. Vicinal trisubstituted isomers do not harden readily with zinc oxide due to the steric hindrance of the side

chain. The unsymmetrically trisubstituted derivatives

react rapidly in the presence of zinc acetate. Besides

the steric effects of the substituent groups the rate of the chelation reaction is to a lesser degree dependent on

the ionization constants as indicated by the shorter

setting time of chavibetol-zinc oxide slurries compared

to those containing eugenol. 6 p. (Paper 68A6-309,

p. 619). Near infrared spectrophotometric method for the deter- mination of hydration numbers, R. A. Durst and J. K. Taylor The 980 absorption band of water is employed in a new method for the determination of hydration numbers. The decrease in the concentration of "free" water is cal- culated from the change in absorbance resulting on the addition of an electrolyte. Data are given for chromic

chloride and nitrate salts in water-methanol solutions, and an extrapolation is made to give the hydration number in pure water. The results obtained by this technique

agree with the values reported using other methods. 6 p. (Paper 68A6-310, p. 625). Franck-Condon factors for the ionization of H2 , HD,

and D2

, M. E. Wacks

Franck-Condon factors for the following ionization

transitions were computed assuming a Morse potential: H2 X

l Z+g (v=0)-+ H2+ X

22

+g (v=0^ 15) HD A"2+ (v= 0) -> HD + X

22 + (r=0- 15) D2 X

l 2

+g (v=0)^D2+ X

22 + (v = 0- 15). The results are used to interpret several recent ionization experiments which used essentially a monoenergetic 44
ionizing medium. The relative importance of autoionization and direct ionization excitation processes are dis- cussed. 3 p. (Paper 68A6-311, p. 631). Calculation of the geometrical structure of some AH

molecules, M. Krauss

Approximate Hartree-Fock calculations for H3

, CH NH2 , H2 0, H2 0

+

, BH4- NH4+

, and CH4 have been used to determine equilibrium angles and internuclear separations. The results are in good agreement with the ex- perimental values where these exist. Data from these calculations are used to test the usefulness of a partition into one-electron type terms. It is found that the partitioned energies reflect the influence

of the other orbitals in such a way as to render a simple

interpretation very difficult. For example, the present

results predict an equilibrium angle of 119° for H 0

+ which is very unexpected if the usual picture of a non- bonding bx orbital is accepted. 10 p. (Paper 68A6-312

p. 635). Preparation and heat of formation of a magnesium

oxysulfate, E. S. Newman

Magnesium oxysulfate, 3Mg(0H)2 -MgSO4 -8H2 0, was

precipitated from metastable aqueous solutions of MgO

in MgS04. The compound forms in solutions containing

12 percent or more of MgS04

, and remains unchanged in solutions containing 10 percent MgS04

, but at lower

concentrations is converted to Mg(OH)2

. Magnesium

hydroxide is not converted to the oxysulfate by nearly saturated MgS04 solutions in times up to three years. The solubility of the oxysulfate is given in the form of a plat of the basicity and MgS04 content of magnesium

sulfate solutions. The heat of solution of the oxysulfate compound in HC1'26.61H2 0 (2.000 normal at 25°C) is 68.94 keal/mole with a standard deviation of 0.23 keal/mole and its heat of formation from Mg(OH)2 , MgSGy7H2 0, and liquid water is AH = 2.11 keal/mole. The corresponding heat of formation from the elements

is AH°= -1537.9 keal/mole. 6 p. (Paper 68A6-313,

p. 645). Heat capacity of potassium borohydride (KBH4

) from 15

to 375°K. thermodynamic properties from 0 to 700°K,

G. T. Furukawa, M. L. Reilly, and J. H. Picirelli The heat capacity of potassium borohydride (KBH4 ) was determined from about 15 to 375°K by means of an

adaibatic calorimeter. A table of thermodynamic functions was calculated up to 700°K using the data ob- tained along with those at high temperatures found in the literature. A solid-solid (order-disorder) transition was observed at 77.16 + 0.02°K and the entropy change

associated with this transition was found to be 2.92 J/deg-mole. A broad transition from about 200 to 450°K

is attributed to a continuation of the order-disorder

transition. 9 p. (Paper 68A6-314, p. 651). Heat of combustion and heat of formation of aluminum

carbide, R. C. King and G. T. Armstrong The heat of combustion of aluminum carbide (A14 C3 ) in oxygen was measured by means of bomb calorimetry.

The solid product of the combustion consisted of alpha aluminum oxide and another crystalline form of alumina, which was characterized as delta alumina. The heats

of combustion were corrected for the formation of the delta aluminum oxide. The results, when combined with

the heats of formation of alpha aluminum oxide and

carbon dioxide, yielded -49.7 keal mole-1 for the standard heat of formation of aluminum carbide at 298.15°K

with an estimated overall uncertainty of ± 1.3 keal mole l

. 8 p. (Paper 68A6-315, p. 661). Some elastic compliances of single crystal rutile from

25 to 1000° C, S. Spinner and J. B. Wachtman, Jr. Young's modulus, as a function of temperature up to 1000°C, was determined for eight rutile specimens of

different crystallographic orientations. From these, the following four elastic compliances nr combinations of them were determined as a function of temperature, 5 n , S 33 , 2S 13 , + S44 , and S n

- S l2 - S 66 /2. The method used was the same as had been used in a previous study for rutile at room temperature. 5 p. (Paper 68A6-316, p. 669). Energy dependence of the D-D reaction cross section at low energies, J. G. Brennan and J. J. Coyne

The energy variation of the approach cross section

for the D-D reaction is calculated using several different methods. The simplest method assumes strong absorption inside the nuclear surface and uses the WKB ap- proximation. The slope of the Gamow plot is in this case a constant. A strong absorption model, without WKB approximation, leads to negative corrections to

this constant slope. A weak absorption model, which seems more applicable, gives both positive and negative

corrections, depending on the depth of the nuclear

potential. Finally, since the amount of absorption seems important, the effects of varying the absorption

are studied using the optical model. The possible

influence of the P-waves is also investigated. An

experimental study of the energy dependence of the slope of the Gamow plot should give information on the

optical potential which one deuteron sees when it ap- proaches another deuteron. 8 p. (Paper 68A6-317, p. 675). Steady-state response of silicon radiation detectors of the diffused p-n junction type to x rays. I: Photovoltaic mode of operation, K. Scharf and J. H. Sparrow A relation is derived for the photocurrent produced by

x rays in silicon radiation detector cells of the p-n

junction type, giving the dependence of the generated

photocurrent on exposure rate, photon energy, and

electrical and geometrical parameters of the silicon wafer. Silicon radiation detector cells operated as

photovoltaic cells are found to be more sensitive to x

rays than silicon solar cells previously investigated,

open-circuit voltages being several hundred times

larger than those measured in solar cells. The shortcircuit current produced by x rays increases with in- creasing temperature by about 0.3 percent per °C at 25°C cell temperature. Due to the high zero voltage

junction resistance of silicon radiation detector cells, the temperature dependence of the photovoltaic output 45
current increases with increasing load resistance at a smaller rate than that observed in silicon solar cells. The energy dependence of the short-circuit current pro- duced by x rays, measured over a wide range of radiation

qualities, is shown to be in good qualitative agreement

with calculated values. 19 p. (Paper 68A6-318, p. 683). Intercomparison of high-energy x-ray intensity measurements, J. S. Pruitt and S. R. Domen

This paper describes experimental comparison of the sensitivity of the NBS P2-4 ionization chamber and a

replica of Wilson's Quantameter. The sensitivity ratios

are used to compare calorimetric measurements of total x-ray beam energy made at the NBS and in the USSR be- tween 20 and 90 MeV. The agreement is within the combined errors, but the cource of an apparent 2 percent systematic difference has not been found. 5 p. (Paper 68A6-319, p. 703.9 TITLE PAGE AND CONTENTS TO VOL. 68, 6 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SEC- TION A. PHYSICS AND CHEMISTRY, VOLUME 69, JANUARY-DECEMBER 1965

January-February 1965 Heat of decomposition of sodium and potassium chlorate, A. A. Gilliland and D. D. Wagman

The heats of decomposition of sodium and potassium

chlorate into their respective chlorides have been deter- mined in a bomb calorimeter. The processes may be represented by the equations: NaC103 (c) = NaCl(c) + 3/2 02 (g) Ar/°(25°C) = -45.76 + 0.17 kj/mole

= -10.94 + 0.04 keal/mole KC103 (c) = KCl(c) + 3/2 02 (g) AW°(25°C) = -38.25 + 0.30 k/Jmole

= -9.16 ± 0.07 keal/mole. Combination of these data with the heats of formation

of NaCl(c) and KCl(c) gives -87.33 + 0.07 keal/mole

and -95.23 + 0.10 keal/mole for the standard heats of formation of NaC103 (c) and KC103 (c), respectively, at 25°C. 4 p. (Paper 69A1-320, p. 1). Application of precise heat-capacity data to the analysis

of the temperature intervals of the NBS (1955) and

the international practical temperature scales in the region of 90°K, G. T. Furukawa and M. L. Reilly A method is presented for analyzing the temperature

intervals of the NBS (1955) temperature scale and the International Practical Temperature Scale (IPTS). Values

of dT/dR as a function of resistance are derived from equations of dQ/dR and dQ/dT, obtained from precise heat-capacity data (better than ± 0.02 percent) by the method of least squares. An adjusted temperature scale

is obtained by integration of the values of dT/dR,

relative to a reference temperature and the corresponding

resistance of the thermometer. The results of the adjusting process in the neighborhood of the oxygen point (90.18°K) are discussed and compared with the existing temperature scales. The derived temperature scale was

found to be similar to the scales maintained by the Pennsylvania State University (PSU), the Physico- Technical and Radio-Technical Measurements Institute (PRMI), and the National Physical Laboratory (NPL)

from the upper limits of these scales, near 90°K, down

to 50°K. The adjusting method presented is limited by

the uncertainty of formulation of dQ/dR and dQ/dT and

the derived temperature scale is limited by the accumuuncertainty in the integral of dT/dR. 8 p. (Paper 69A1-

321, p. 5). Heat capacity and thermodynamic properties of beryllium aluminate (chrysoberyl), BeO-Al2 03

, from 16 to 380°K,

G. T. Furukawa and W. G. Saba The heat capacity of beryllium aluminate (chrysoberyl), BeO'Al2 03 , was determined from 16 to 380°K and the thermodynamic properties calculated from 0 to 380°K.

6 p. (Paper 69A1-322, p. 13). Thermodynamics of the ternary system: Water-sodium

chloride-barium chloride at 25°C, R. A. Robinson and

V. E. Bower

Isopiestic vapor pressure measurements have been made on the ternary system water-sodium chloride- barium chloride at 25°C. From these data the activity coefficient of each salt in the presence of the other has been calculated. The rule that the logarithm of the

activity coefficient of one salt (which is equivalent to

its chemical potential) varies linearly with the concentration of the other salt has been investigated. It is shown that this rule is at least approximately valid with

the condition usually assumed, namely, that the total concentration of ions is kept constant. This latter condition is more suited to isopiestic studies. Finally, the calculation of mutual solubilities from isopiestic data

is described. 9 p. (Paper 69A 1-323, p. 19). Compressibility of eleven inorganic materials, C. E. Weir Volume compression measurements were made on

eleven inorganic materials to a maximum pressure of 10,000 atm. Coefficients of the empirical equation -AV/VQ = a(P-2000) + b(P-2000)2 were determined for the substances studied. Values of a in units of 10~6 atm

-1 and b in units 10~10 atm

-2 are as follows: Monel—

a = 0.62, b = 0; Waspalloy-a = 0.65, b = 0; sapphirea = 0.34, b = 0; rutile-a = 0.46, b =0; spinel-a = 0.39,

b = 0; Bas-fl=3.99, b = -1.6; CaS-a = 0.48, b = -1.1; B2 03 (crystalline)-fl = 3-24, b = -0.29; H2 B03 -a = 11.65,

6 =-3.2; As2 03 (glass)-a = 8.34, b = -1.7; and As 2 S3 (glass)-a = 8.12, b = -2.8. 3 p. (Paper 69A1-324, p. 29). Determination of the intermolecular entanglement coupling spacings in polyisoprene by viscosity measurements, L. J. Fetters The entanglement molecular weight (M

e

) for polyiso- prene has been estimated from the dependence of solu- 46
tion viscosity on molecular weight. Polymer concentrations of 1.82, 3.64, and 14.56 g/100 cm

3 were used. Certain theoretical relationships between viscosity and

molecular weight have been confirmed, and the prediction concerning the dependence of the entanglement

molecular weight on polymer concentration has been substantial. Furthermore, no variation in M e was detected

in the range of 25 to 75°C. 5 p. (Paper 69A1-325, p. 33). Electrical conductivity of dilute solutions of "Sea

water" from 5 to 120°C, C. G. Malmberg

Data are reported for solutions of sea salt at concentrations up to 161 ppm (2.5 equivalent ppm chlorine) over the temperature range 5 to 129°C. Analysis is made in terms of equivalent conductance and the limiting law, A = A0 -ay C with evaluation of AQ and a in terms

of the temperature. As a result, the conductivity due

to sea salt in water is calculable over these ranges of temperature and concentration with an estimated error of ± 0.3 percent or less. 5 p. (Paper 69A1-326, p. 39). Preparation of a carbonate-free complex calcium aluminate, H. A. Berman Compounds found in portland cement are difficult to prepare completely free of carbon dioxide. The difficulty

is further intensified in the case of calcium aluminate monosulfate by the instability of the compound in the course of its precipitation from solution and the consequent need for preparing it within a limited time. The

compound has been prepared in a large quantity, free of carbon dioxide, by using a closed-system precipitation and filtration assembly, in which rapid movement of the reagent solutions and mother liquor is achieved by the manipulation of trapped pockets of previously prepared C02 -free air. The precipitate is conditioned and pack- aged in a glove box in which a C02 -free atmosphere is maintained. Techniques are described in detail. 7 p. (Paper 69A1-327, p. 45). Synthesis and thermal stability of bis(8-hydroxyquinoline) —

Schiff base coordination polymers, E. Horowitz and

T. P. Perros This report describes the synthesis of a new bis- bifunctional derivative of 8-hydroxyquinoline, its reaction with a number of divalent, first-row transition metals to form coordination polymers, and a thermogravimetric

study of the thermal stability of the polymers. The ligand,

5, 5

'-[ methylenebis (p-phenylenenitrilomethylidyne)] di-8- quinolinol was prepared in a condensation reaction be- tween 5-formyl-8-hydroxyquinoline and 4,4 -methylenedianiline and subsequently treated with the acetate salts

of Mn(II), Co(H), Ni(II), Cu(II), and Zn(II). The metal

coordinated in the backbone of the polymer is shown to be an important factor in governing the thermal stability when the samples are heated in vacuum. 5 p. (Paper

69A1-328, p. 53). Atomic absorption spectrum of Praseodymium (Pr n), R. Zalubas and M. Wilson

Absorption lines of Pr i were observed using a King

furnace. A list of 3532 lines in the region from 1741 to

5839 A is presented. 12 p. (Paper 69A1-329, p. 59). March-April 1965 Radiolysis of N

ls N14 0, R. Gorden, Jr., and P. Ausloos The gas-phase gamma-ray radiolysis of N

15 NI4 0 has been investigated as a function of dose, concentration, and temperature (-80 to 376°C). Around 40°C the ratios Nf/Nf and N

15 0/N14 0 are 0.1 and 0.4, respectively, independent of dose and concentration. In the radiolysis

of N

14 N14 0-N 15 0 mixtures it was found that the ion pair yield of N

14 was 0.5. The ion pair yield of Nf in the radiolysis of N

15 N14 0 increases with temperature from 2.6

at 50°C to 21.7 at 376°C. On the other hand, the yield

of Nj° is, within experimental error, not affected by a change in temperature, indicating that only the "molecular" nitrogen increases with an increase in temperature. The occurrence of dissociative electron attachment processes is consistent with the experimental observations. The yields of Nf and N'° increase when a potential difference is applied during radiolysis at the saturation plateau. The latter increase can be accounted for by an enhancement of neutral excited molecule decompositions. Addition of xenon and krypton enhances the decomposition of nitrous oxide. The results indicate

that N atoms play a relatively less important role in the

inert gas-induced decomposition than in the direct ra- diolysis. 7 p. (Paper 69A2-330, p. 79).

Oscillator strengths for lines of Nil, C. H. Corliss Relative intensities and oscillator strengths for 888

lines of Ni I between 2800 and 9900 A from several in- vestigations have been reduced to the absolute scale of Corliss and Bozman and critically compared. New ob- servations of faint lines in the visible and infrared portions of the spectrum are included. 21 p. (Paper 69A2-

331, p. 87). More wavelengths from thorium lamps, W. F. Meggers and

R. W. Stanley For the purpose of supplementing or superseding the spectroscopic secondary standards of wavelength derived

since 1910 from an iron arc, Meggers and Stanley, in 1958, reported the first interferometric determinations of wavelengths emitted by a thorium lamp. Those deter- minations were restricted to 222 intense radiations of thorium with wavelengths ranging from 3288.7356 A to 6991.5839 A. Now the same, and additional, interference spectrogfams have been measured to provide improved wavelengths for 510 radiations ranging in wavelength

from 3269.6089 A to 7020.504 A. The present listin- cludes many lines of lower intensity than those previously published and fills most of the large intervals in our

first report. The accuracy in relative wavelength values

of 163 classified thorium lines is tested by the combination principle which indicates that the average error is less than 1 part in 20 to 40 million. Similar measure- ments of wavelengths emitted by iron-halide lamps have

errors that are 3 to 5 times greater. 10 p. (Paper 69A2-

332, p. 109). 47
Phase equilibria in the system vanadium oxide-niobium

oxide, J. L. Waring and R. S. Roth The phase diagram for the pseudo-binary system V2 05 -Nb 2 05 was constructed from fusion characteristics and x-ray diffraction data. Three compounds were

postulated for the system. The compound VNb9 025 and V2 Nb23 062 were found to melt incongruently at about 1290°C and 1322°C respectively. The third compound

occurring at about 93 to 94 mole percent Nb2 05 melted

incongruently at approximately 1332°C. Apparently, Nb2 Os accepted up to 5 mole percent V2 Os in solid solution, however, V2 05 did not accept any appreciable Nb2 Os in solid solution.

In addition, the Nb2 05 rich portions of the following

binary systems were reinvestigated: ZnO—Nb2 Os

, NiO— Nb2 05 , Al2 03 -Nb2 05 , Ti02 -Nb2 05

, and Zr02 -Nb2 05

. In each case an Nb2 Os solid solution had been reported previously in excess of 90 mole percent Nb2 Os

. However, subsequent data indicated that these Nb2 Os solid solutions contained discrete compounds which are re- lated to those found in the pseudo-binary V2 Os —Nb2 Os

. 11 p. (Paper 69A2-333, p. 119). Thermodynamics of the ternary system: water-glycine- potassium chloride at 25°C from vapor pressure measurements, V. E. Bower and R. A. Robinson The thermodynamic properties of the ternary system:

water-glycine-potassium chloride at 25°C have been

evaluated by means of isopiestic water pressure measurements. The effect cf added glycine on the activity coefficient of potassium chloride has been calculated and

the effect of added potassium chloride on the activity coefficient of glycine. The variation of the activity coefficient of potassium chloride has been studied pre- viously by Roberts and Kirkwood, using an entirely dif- ferent method—the measurement of the emf of suitable concentration cells. The agreement between these inde- pendent measurements is shown to be excellent within the concentration ranges common to both experiments. 5 p. (Paper 69A2-334, p. 131). Heat of formation of aluminum fluoride by direct combination of the elements, E. S. Domalski and G. T. Armstrong The standard heat of formation of aluminum fluoride was calculated from the heats of combustion of Teflon

and of aluminum-Teflon mixtures in fluorine. The heat measurements were made in a bomb calorimeter. C2 F4 (solid polymer)+ 2F2 (g) = 2CF4 (g) (1) Al(c)+3/2F2 (g) = AlF 3 (c) (2) For reaction (1), Atf298 was found equal to -10,350.7±

0.4 Jg

-1 (-247.43 ±0.01 kcal monomole- 1 ), and for re- action (2) Af/°98 = Af/p 98 was calculated to be -1507.8 ± 1.2 kj mole-1 (-360.37 10.29 kcal mole-1 ). The latter uncertainties are the computed standard deviations of the means. The calculated standard heat of formation of aluminum fluoride is estimated to be accurate to within

+ 6.6 kj mole-1 (1.6 kcal mole-1 )

- The measurements on

Teflon were combined with existing data and the heat of formation of carbon tetrafluoride was calculated to be -221.8 kcal mole- 1

. Hp. (Paper 69A2-335, p. 137). Relative enthalpy of polytetrafluoroethylene from 0 to 440°C, T. B. Douglas and A. W. Harman

Using a drop method and an ice calorimeter, precise measurements of enthalpy relative to 0°C were made on

a sample of granular polytetrafluoroethylene which was

initially 95 percent crystalline. The measurements were

at temperatures every 50 degrees from 50 to 300°C (both before and after melting and quenching); and also at 340, 400, and 440°C in the liquid range, where it appeared

that structural equilibrium of the polymer was reached

only slowly. Marked upturns in the heat capacity-temperature curves of the crystalline and quenched polymer above about 200°C were treated as corresponding to gradual but reversible fusion of the type commonly

caused by impurity components ("premelting"). Consideration was given also the possibility of melting of

thin crystals. The (total) heat of fusion could not be determined calorimetrically by the method used, but the additional assumption of three alternative approximations

in all cases led to 327°C as the crystalline melting

point of the polymer, which agrees exactly with the ac- cepted value based on direct observation. The heat

capacity and relative enthalpy and entropy of the poly- mer derived from the data were joined smoothly with precise low-temperature values measured earlier at the Bureau on the same and two other samples of polytetra- fluoroethylene, and these properties are represented by equations and tabulated as functions of temperature.

9 p. (Paper 69A2-336, p. 149). Anionic polymerization of isoprene at low concentrations of polyisoprenyllithium, L. J. Fetters The kinetics of polymerization of isoprene with

n-butyllithium initiator was investigated in «-hexane

solution over an extended concentration range of poly- organolithium. The propagation reaction was found to be first-order with regard to monomer and half-order with respect to chain anion concentration. The degree of chain anion aggregation, in the association equilibrium between active single chains and inactive associated

chains, was concurrently scrutinized. The evidence

accrued from the studies indicates that the associated

chains exist only as binary aggregates. These experi- mental findings are in concert with those results ob- tained at higher concentrations of polyorganolithium.

8 p. (Paper 69A2-337, p. 159). One particle transitions and correlation in quantum mechanics, A. R. Ruffa The quantum mechanical correlation problem, involv- ing the evaluation of expectation values of many parti- cle operators for a given eigenstate, is formulated, by means of the matrix sum rule, in terms of unobservable

or virtual one particle transitions to other eigenstates

of the system. This formulation is set forth for the twofold purpose of both demonstrating the nature of the many particle correlations from the point of view of 48
matrix mechanics, and making possible the derivation of sum rules which may be used in their analysis. The

analysis shows that the transition integrals <a\ A(-|a '> and <a|A-|a'>, where Af

. and A;

- are arbitrary one parti- cle operators involving the tth and ;th particles, respectively, are not necessarily equal, since such transitions can involve quantum states of different coordinate symmetry, i.e., the antisymmetric and symmetric states when \=2, and the states of mixed symmetry, in addition, when N>3. The indistinguishability principle is demonstrated to require only that Ei< «i a«i«'> i 2 = E i<«i a,v>i

2

- By detailed analysis of one particle transitions to states of various symmetries, the relationship between

the various one particle transitions is determined. The

expectation value for an antisymmetric state of the two

particle operator E A; -Ay is found to be E<a|Af -A

y |a>= N(N-l)^ |<a|A1 |a^>| 2

-A/£ l«M|AJ*N>r

a N

where the sum a\ is over all antisymmetric states, and

the sum ls over all the nonantisymmetric states. This

equation is used to obtain an approximate relation be- tween these expectation values and observable quantities. From the Heisenberg commutation relations, the sum

rule E E (E

a ^-Ea

)\<a\t.\af>\ 2 ^3h?N/2m

is obtained and used to demonstrate some general properties of systems in the nonrelativistic approximation.

14 p. (Paper 69A2-338, p. 167). Disaccommodation of magnetic spectra of two manganesezinc ferrites, A. L. Rasmussen

Disaccommodation of the complex susceptibility (time change after demagnetization) of two manganese zinc

ferrite materials of the composition Mn 0 S97 Zn0 265 Fe2 07 0„ and Mn0 . 584 Zn0 353 Fe2 os 0„ was studied in response to demagnetizing frequency and rate, temperature, frequencies of ~20 kHz to ~2000 kHz, and rf magnetic field in- tensities of ~10-4 oersted and ~10-2 oersted. Precise susceptibility spectra near — 10.0°C show that the resonance maxima shift to higher frequency and de- crease in magnitude with increasing time after demagnetization and that the disaccommodation rate varies considerably and changes sign with frequency . Activation

energies of the order of 0.8 electron volt were computed

at 100 kHz. 11 p. (Paper 69A2-339, p. 181). Splitting of a set of equivalent sites in centrosymmetric space groups into subsets under homogeneous stress,

J. B. Wachtman, Jr., and H. S. Peiser

It is assumed that the symmetry operations possessed

by a homogeneously stressed crystal will be those common to the crystal and to the macroscopic state of stress. Application of stress either leaves a space group unaltered or lowers it to a subgroup. Such lowering can always be considered to take place in successive steps each of which leaves no group intermediate between the

starting group and the subgroup. Each such step can

be accomplished by a uniaxial stress; for the centro- symmetric space groups, all but one of the symmetry

reductions consisting of two or more successive steps can also be accomplished by a uniaxial stress. A set of sites all of which are equivalent in the unstrained

crystal may split into two or more subsets under stress. For each space group all possibilities are taken into account by considering the behavior of the general position (most general set of symmetry related sites) be- cause the behavior of each special position can easily be derived by specializing the description of the general

position. The splitting of the general position under homogeneous stress is tabulated for all possibilities for each centrosymmetric space group. 15 p. (Paper 69A2-

340, p. 193).

Electronic structure and magnetic properties of the neptunyl ion, J. C. Eisenstein and M. H. L. Pryce The magnetic and spectroscopic properties of the neptunyl ion are reconsidered. The effect on the energy

levels of covalency is discussed. New values for the parameters of our earlier theory are obtained, the analysis being based on more recent spectroscopic data and argu- ments concerning the relative widths and intensities of the optical absorption peaks, p-values and the temperature independent susceptibility are calculated and the results compared with experimental values. Experiments which need to be done to confirm various parts of the theory are suggested. 19 p. (Paper 69A3-341, p. 217). Heats of transformations in bismuth oxide by differential thermal analysis, E. M. Levin and C. L. McDaniel DTA was chosen as a convenient method for resolving

differences in the reported heat of transition and heat of fusion of Bi2 03

. The heat of the low to high transition

of K2 SO„ (at 583°C) and the heat of fusion of Ag (at 960. 8°C) were used as internal standards. These standards were mixed directly with the Bi 2 03 in three weight

ratios. The heating schedule for each weight ratio was

3°/rnin, 9°/min, and 3°/min. For evaluating internal consistency, DTA determinations were made for mixtures of the two standards. Linearity was obtained within limits between the weight ratio of Bi2 03 and standard and the corresponding ratio of peak areas. The heat of transition

730 ° C

of Bi2 03 (mon^ cubic was found to be 9.9±0.5kcal/

mole and the heat of fusion (cubic!

25 liq.) 3.9 ±0.2 kcal/mole. The uncertainties are estimated limits of

error, based on internal consistency and on the values of the standards. 7 p. (Paper 69A3-342, p. 237). Phase relations between iridium and the sesquioxides

in air,S. J. Schneider, J.L. Waring, and R. E. Tressler A study has been made by x-ray diffraction analysis

of the reactions that occur in an air environment between 49
Ir and Ir02 and each of the following: Nd2 03 , Sm2 03 , Eu2 03 , Gd2 03 , Dy2 03 , Ho2 03 , Y2 03 , Er2 03 , Tm2 03 , Yb2 03 , Lu2 03 , ln2 03 , Sc2 03

, and A12 03

. In air Ir oxidizes at low

temperatures to form Ir02 which in turn dissociates at 1020°C. The pseudo binary Nd2 03 -Ir02 was studied in detail inasmuch as it typified many of the Ln2 03 -Ir02 systems. Two compounds, Nd2 03 -2Ir02 and 3Nd2 03 "2Ir02 occur in the system. The former, a cubic pyrochlore type phase, dissociates upon heating at 1190°C. The 3:2 compound dissociates to the solid phases, Nd2 03 and Ir, at 1300°C. Prior to dissociation, the 3:2 compound

undergoes an apparent polymorphic transition at 1195°C

which may be related to an oxygen loss. Up to at least 2000°C no further reaction occurred between Ir and Nd2 03

. All B- and C-type rare earth oxides formed cubic pyochlore type compounds with Ir02

. Each of these compounds subsequently dissociated upon heating. No

apparent reaction occurred between Ir02 and either ln2 03 , Sc 2 03) or A12 03

. 10 p. (Paper 69A3-343, p. 245). Phase equilibrium relationships in the system Gd2 03 —

Ti02 , J. L. Waring and S. J. Schneider The phase equilibrium relationships for a major portion of the Gd2 03 -Ti02 system were determined in air, from a study of solid state reactions and from fusion

characteristics. Three intermediate phases, a 1:2 compound, a 1:1 compound, and a face-centered cubic solid solution occur in the system. The solid solution phase

is indicated on the phase diagram as existing from 33 to 40 mole percent Ti02

, at 1750°C. This phase melts in- congruently over a range of temperatures and compositions, from 1840°C, the peritectic temperature at 35 mole

percent Ti02

, to 1775°C at 40 mole percent Ti02

, the incongruent melting temperature of Gd2 GyTi02

. The

minimum temperature of stability for the phase is 1600°C

at 38 mole percent Ti02

. The compound Gd2 03 -2Ti02 has

a cubic pyrochlore structure type with a = 10.181 A and

melts congruently at 1820°C. This phase apparently ac- cepts up to about 3 mole percent Ti02 in solid solution

at 1460°C. The compound Gd2 GyTi02

, melts incongruently at 1775°C and has a reversible phase transition at 1712°C. The x-ray powder diffraction pattern of the high temperature modification was indexed on the basis

of a hexagonal cell a = 3.683 A, c = 11.995 A and is apparently related to the A-type rare earth oxide. The

compositions Sm2 03 :Ti02 and Eu2 03 :Ti02 gave x-ray dif- fraction powder patterns with marked similarity one to the other as well as to both the high and low polymorphs

of Gd2 GyTi02

. The composition Dy2 03 :Ti02 formed

several phases one of which is apparently related to the high temperature polymorph of Gd2 03 -Ti02

. 7 p. (Paper

69A3-344, p. 255).

Acid-base behavior in 50-percent aqueous methanol: thermodynamics of the dissociation of protonated tris(hydroxymethyl)aminomethane and nature of the solvent effect, M. Woodhead, M. Paabo, R. A. Robinson, and R. G. Bates

Electromotive-force methods and cells without liquid junction have been utilized to determine the acidic dis- sociation constant of protonated tris(hydroxymethyl)-

aminomethane [2-amino-2-(hydroxymethyl)-l , 3-propanediol] in 50 wt percent methanol solvent at seven

temperatures from 10 to 40°C. The change of the dis- sociation constant with temperature has been used to calculate the changes of enthalpy, entropy, and heat capacity when the dissociation takes place in the standard state. Comparisons with earlier measurements in the aqueous medium reveal no great differences in the enthalpy and entropy, suggesting that water participates

in preference to methanol in the protolytic reaction even

in 50-percent methanol. It is shown that electrostatic considerations alone are unable to explain the solvent

effect on the dissociation energy, and a substantial "basicity effect" is indicated. The activity-coefficient term for the amine hydrochloride in equimolal amine-salt

buffers has been evaluated and compared with similar data in the water solvent. 8 p. (Paper 69A3-345, p. 263). Observations of dislocations and surface features in corundum crystals by electron transmission microscopy, D J. Barber and N. J. Tighe

Crystals of corundum, grown by the flame-fusion method, have been chemically thinned and examined by

electron transmission microscopy. Some specimens

were etch-pitted after thinning, and the relationship be- tween etch pits and dislocations was investigated. Within subgrains there is a close agreement between

dislocation and etch pit densities; this agreement breaks down along many boundaries. The etching behavior of crystals containing Cr2 03 , Ti02 and other impurities has been examined. Etch-tunneling along grown-in dis- locations is commonly observed in the impurity-doped

materials; it is particularly pronounced in ruby. In heattreated crystals containing Ti02

, local differences in solid solubility can lead to the formation of etch hillocks. Thermally etched surfaces have also been characterized, and gas atmospheres are shown to affect the surface

topology. Evaporation experiments in the electron microscope are reported. 10 p. (Paper 69A3-346, p. 271). Low-frequency dielectric properties of liquid boric oxide, K. H. Stern The dielectric constant and loss of glassy B2 Os have

been measured from 500 to 800°C over the frequency range 1 to 50 kHz. The material behaves essentially

like a nonpolar polymer; no relaxation phenomena could

be identified. Over the entire frequency and temperature range f'lies between 3.1 and 3.2. Losses increase

with increasing temperature and decreasing frequency and

appear to be due to ionic impurities. The activation energy for conductance is 77.8 kj (18.6 kcal), independent of frequency. 5 p. (Paper 69A3-347, p. 281).

Mass spectrometric study of the effects of nitric oxide and other additives on "purified" active nitrogen, J.T. Herron A mass spectrometric study has been made of the inter- action of NO and other additives with "purified" active

nitrogen. The observed increase in N atom partial pressure when NO is added is interpreted in terms of a 50
change in the accommodation coefficient of the N atoms. The metastable N, species which can be detected

with the mass spectrometer can be deactivated with N2 0

or NH3

, but not with NO, 02

, or NF 3

. 3 p. (Paper 69A3-

348, p. 287). Synthesis and ring structure of 7-acetamido-7-deoxy-Lgalacto-heptulose, E. J. McDonald

7-Acetamido-7-deoxy-L-g«/ac/o-heptulose was prepared

by oxidation of 1-acetamido-l-deoxy-D-g/ycero-D- galacto- heptitol with Acetobacter suboxydans. The new aceta- mido-deoxy-L-heptulose was shown to be a pyranose by comparison with /3-D-fructopyranose. The following equations represent the optical rotation of 7-acetamido7-deoxy-a-L-g«/tfc?o-heptulopyranose in water at 20°C

and 3-5°C, respectively:

[a] 20 D= -15.5e-- 0396/ -97.1,

[a]

3- 5 D= -U.9e-- omt - 105.8, where t is the time in minutes after dissolution of the sample. 4 p. (Paper 69A3-349, p. 291).

July-August 1965 Correlation of successive atomic steps in crystals by

relaxation mode analysis, A. D. Franklin The relaxation mode analysis is used to compute the average value of the cosine of the angle between suc- cessive steps of an ion diffusing by a vacancy mechanism

on a lattice. The technique is applicable to tracers

(self-diffusion) or impurities, on any lattice. The result, given in terms of the eigenvalues and eigenvectors of a secular equation, is suitable for machine computation. Sample computations for self-diffusion on an fee lattice illustrate the method. It is necessary, in order to do the calculations, to have a lattice of finite size, the boundary of which is chosen either totally reflecting or completely transparent to vacancies. For self-diffusion, the boundary can be centered on the vacancy, and conver- gence of the computed value with boundary radius is rapid. For impurity diffusion, the boundary must be centered on the impurity, and convergence is much slower.

7 p. (Paper 69A4-350, p. 301). Reduction of crystallographic point groups to subgroups

by homogeneous stress, H. S. Peiser and J. B. Wacht- man, Jr.

It is assumed that the symmetry operations possessed

by a homogeneously stressed crystal will be those com- mon to the crystal and to the stress. Application of stress either leaves a point group unaltered or lowers it to a subgroup. Any stress-induced minimum step of symmetry lowering can be caused by unaxial stress but

three of the possible stress-induced compound steps of symmetry lowering require biaxial stress. The uniaxial

or biaxial stress required for any stress-induced symmetry lowering is tabulated and stereograms are given

for each of the minimum steps showing the relation of the remaining symmetry operations to the initial symmetry and showing the splitting of a set of initially equivalent general directions into inequivalent subsets. These stereograms provide a direct representation of the splitting of a general position in a crystal into in- equivalent subsets for the symmorphic space groups and

the latter are listed; the effect of glide planes and screw

axes must be considered in the remaining space groups

yet the stereograms still provide the correct pattern of

splitting. Uses of the stereograms, for instance, to obtain the splitting of a special position, are described.

16 p. (69A4-351, p. 309). Effect of hydrostatic pressure on the refractice indices

of some solids, R. M. Waxier and C. E. Weir Measurements were made on refractive index changes

with hydrostatic pressures between 1 bar and 1 kbar using the helium yellow line. The materials studies were: KBr, NaCl, LiF, diamond, MgO, quartz, A12 03 , and three silicate glasses. .All the materials increased

in refractive index with pressure except diamond, MgO,

and A12 03 which decreased, and LiF which did not change. The results were compared with photoelastic measurements, and Pockel's geometric theory of photoelasticity was substantiated as well as Mueller's physical theory. The data show that the ratio of change of polarizability with density is greater for solids having

stronger interatomic repulsive forces. Volume and temperature coefficients of polarizability were evaluated for the cubic crystals and glasses. The thermo-optic be- havior of crystals and glasses is discussed. 9 p. (69A4-

352, p. 325). Crystallization kinetics and polymorphic transformations

in polybutene-1, J. Powers, J.D.Hoffman, J. J. Weeks,

and F. A. Quinn, Jr. When subcooled from the melt to any temperature be- tween about 90 to 110°C, polybutene-1 transforms at a readily measurable rate to a crystalline phase denoted

"form 2," which is typically spherulitic. The kinetics

of this process have been measured by optical and dila- tometric techniques. The results are consistent with

the concepts that the initiation is heterogeneous, that the initiation is. followed by spherical growth (Avrami w=3), and that the growth rate is nucleation controlled. Values are obtained for the surface free energies and

related quantities that are consistent with crystallization by chain folding: ct=7.2 erg/cm 2 or 7.2 mj/m 2

, a e =

15.5 erg/cm 2 or 15.5 mj/m2

, and work of chain folding ?=1.7xl0"13 erg/fold. (For comparison, q is 2.1 x 10 13 erg/fold for polyethylene.) The work of chain folding of polybutene-1 is also compared with that of polychlorotrifluoroethylene, and it is shown that an increase of q

is connected with an increase of equilibrium melting

temperature. Crystal form 2 subsequently converts slowly near room temperature to a crystalline phase

denoted "form 1" of different helicity and density, and

the rate of this crystal-crystal transformation is also

studied. The Avrami parameter for the form 2-* form 1 process is n=2. The process appears to be nucleation

controlled. It is shown that form 1 is, everywhere below

its melting point, the stable form. The equilibrium melting temperature for form 2 is estimated to be about 128°C, and for form 1 about 14l°C. A degree of crystallinity 51
scale based on specific volume is established. The

degree of crystallinity of form 2 is about 52 percent, and

after conversion to form 1, the crystallinity is about 77

percent. 11 p. (Paper 69A4-353, p. 335). Compliance-time-temperature relationships from indentation measurements on a pure-gum rubber vulcanizate,

F. L. Roth, G. W. Bullman, and L. A. Wood

Previous work on the calculation of shear compliance

/

(limit of the ratio of strain to stress at zero deformation) from observations of the indentation of a flat natural rubber surface by a rigid 'phere has been extended over

greater ranges of time, temperature, and state of vul- canization. The extreme ranges of time were 5 sec to 23.5 hr and of temperature —67 to +100°C. The curves of JT against log /_60 (where t_60 is the equivalent time at —60°C and T is in °K) were sigmoid with a region of maximum slope and continuing through a region of mini- mum slope extending over about 7 decades. In contrast with the predictions of the Williams, Landel, and Ferry

equation, the empirically determined shift of abscissa necessary to give a single JT curve was found to be a linear function of T'

1 with a slope corresponding to an "apparent activation energy" of 36.9 kcal (°K) _I (mole)' 1 (154.5 kj (°K)-' (mole)"1 ). 7 p. (Paper 69A4-354, p. 347). Distribution function of the end-to-end distances of linear polymers with excluded volume effects, J. Mazur The distribution function of the absolute values of chain lengths of a polymer molecule which displays the excluded volume effect cannot assume a Gaussian form. This fact follows directly from theoretical considerations based on the application of the Central Limit Theorem to the theory of Markov chains. In order to de- termine the exact shape of the polymer chain-end distribution function we calculated its various moments

taken about the origin, and their dependence on the number of polymer segments, using a Monte Carlo technique

for generating polymer chains on a lattice. The results obtained from the extrapolation of various combinations

of these moments of the general form

<r

n > 8n =

" p/s - for n - *

are used to determine the shape of the polymer distri- bution function. It is found that the chain-end distribution function can be approximated by the following form:

with t=3.2 and a being a parameter, determinable from

the average mean square chain-end distances. 9 p. (Paper 69A4-355, p. 355). An additivity rule for the vapor pressure lowering of aqueous solutions, R. A. Robinson and V. E. Bower

The question is discussed whether, and to what extent,

the vapor pressure lowering of an aqueous solution containing two salts A and B can be compounded additively

from the vapor pressure lowerings of a solution containing the salt A alone and another solution containing the

salt B alone. In some instances the additivity of vapor

pressure lowering is true within less than 0.5 percent;

six systems have been examined and the greatest deviation from additivity amounts to 2.0 percent. 3 p. (Paper 69A4-356, p. 365). Franck-Condon factors to high vibrational quantum numbers V: 02 band systems, R. W. Nicholls Franck-Condon factors arrays have been computed

numerically and are displayed to highest known vibrational quantum numbers for the following 02 band systems: Herzberg I: (A*ll -

Herzberg II: Herzberg III: ( d3 a u - x>z ;: Chamberlain: (D3 AU -

Broida-Gaydon: ( A *K -

Noxon:

Atmospheric: (^;-

Infrared Atmospheric:

5 p. (Paper 69A4-357, p. 369). An absolute temperature scale from 4°K to 20°K deter- mined from measurements with an acoustical thermometer, H. H. Plumb and G. Cataland

At NBS an acoustical thermometer has been used to obtain values of temperature at every degree from 5 to 20°K as a basis for a temperature scale. This scale has been compared with four other temperature scales in the region from 10 to 20°K. Since the acoustical ther- mometer is an entirely new approach to precision ther- mometry in this range the comparison of its resulting scale with scales based upon gas thermometry from 12

to 20°K is significant. Indications of inaccuracies in the equilibrium hydrogen vapor pressure scales, and also

in the He4 vapor pressure scale, are presented. 3 p. (Paper 69A4-358, p. 375).

September-October 1965 Current research on preservation of archival records on

silver-gelatin type microfilm in roll form, C. S. McCamy

and C. I. Pope

This is a progress report on a study of aging blemishes

on microfilm and measures to prevent their formation. Recommendations, based on current information, include: avoiding excessive densities, avoiding physical damage

to the film, the use of potassium iodide in the fixer, thorough washing, uniform drying, storage at low temperature and humidity in sealed containers, avoidance of airborne reactants, increased archival use of positive copies, and periodic inspection. 12 p. (Paper 69A5-

359, p. 385). 52
Franck-Condon factors to high quantum numbers VI: C2 band systems, R. W. Nicholls Franck-Condon factor arrays have been computed nu- merically and are displayed to highest known vibrational quantum numbers for the following C2 band systems: Freymark: - 1,211 J

Mulliken: Fox-Herzberg: (B 3 II g - X'

3 II U ) Deslandres-d'Az; mbuia: (c'll

g - ^'nj

Swan: (A3 II g - x' 3 iij

Phillips: -

Ballik-Ramsay: (A*3 2

* - x

' 3 n u

) 4 p. (Paper 69A5-360, p. 397).

Matrices of spin-orbit interaction in the electron configurations p

2 d and pA d, J. L. Tech and R.H. Garstang The matrices of spin-orbit interaction in the p

2 d and

p" d electron configurations have been calculated in the LS representation. The matrices have been checked by showing that their eigenvalues, calculated by use of an IBM 7090, agree with the correct eigenvalues known

from the theory of //-coupling. For the sake of completeness, the energies of electrostatic interaction for these

configurations are also given. 6 p. (Paper 69A5-361,

p. 401). Heat of formation of calcium aluminate tricarbonate at 25°C, H. A. Berman The heat of formation at 25°C, AW° = -16,228 kj/mole,

of calcium aluminate tricarbonate, 3CaG" Al2 Gy3CaCGy

30H2 O (c), was determined by the heat-of-solution method,

with 2N HC1 as the solvent, and 3CaOAl2 Gy6H2 0 (c) and CaC03 (c) as the reactants. The heat of solution in 2N HC1 is -501.0 kj/mole, and the heat of the reaction 3CaO-Al2 Oy6H2 0 (c) + 3CaC03 (c) + 24H2 0 (l)->3CaO

Al2 Gy3CaCGy30H2 O (c) is -186.6 kj. The rate at which

the heat of solution in 2N HC1 changes with H2 0 content

at the 30H2 O level, d(&H)/dn, is +9.0 kj/mole per mole H2 0. Heats of solution were determined for samples in the range of 6 to 31H2 0, but decomposition appears to occur on drying to H2 0 contents lower than 26H2 0. The

heats of stepwise reactions leading to the formation of calcium aluminate mono- and tricarbonate have also been calculated. 10 p. (Paper 69A5-362, p. 407). Vapor pressure and heat of sublimation of tungsten, R. Szwarc, E. R. Plante, and J. J. Diamond

The vapor pressure of tungsten was measured by the Langmuir method in the temperature range 2574 to 3183°K

using a vacuum microbalance. The least-squares line through the data, logP(atm)= 7.790 - 44680/T, yields a second law Atf° (2850°K)= 204.4 ± 2.7 kcal/mol and AS°(2850°K)= 35.64 ±0.97 cal/mol deg. Our recommended

equation for the vapor pressure is logP(atm)= 7.933 —

45087/7" based on our experimentally determined mean

third law Af/°(298°K)= 203.5 kcal/mol and tabulated values for the entropies and enthalpies. 5 p. (Paper 69A5-363, p. 417).

Heat capacity and enthalpy measurements on aluminum

carbide (A14 C3 ) from 15 to 1173°K. Thermodynamic

properties from 0 to 2000°K, G. T. Furukawa, T. B. Douglas, W. G. Saba, and A. C. Victor Measurements of the heat capacity and relative en- thalpy were made on aluminum carbide (A14C3 ) from 15

to 1173°K. The thermodynamic properties were calculated up to 2000°K from the data by judicious extrapolation above 1173°K. In conjunction with the heat-of- formation data on A14 C3 obtained by King and Armstrong

and by Mah, second- and third-law analyses have been made of the thermodynamics of several high-temperature

vapor-equilibrium reactions involving A14 C3

. 16 p. (Paper 69A5-364, p. 423). Properties of aqueous mixtures of pure salts: Thermodynamics of the ternary system water-potassium

chloride-barium chloride at 25°C, R. A. Robinson and

V. E. Bower

Isopiestic vapor pressure measurements have been made on the system water-potassium chloride-baride

chloride. The data have been used to evaluate the activity coefficient of each salt in the presence of the

other. Two conditions are considered; in one, the solution is maintained at constant total ionic concentration;

in the other, at constant total ionic strength. The ex- cess free energy of mixing is calculated and compared

with similar data for the water-hydrochloric acid-barium

chloride and water-sodium chloride-barium chloride systems. 10 p. (Paper 69A5-365, p. 439). Wide-range (up to 10

10 P) rotating cylinder viscometer,

A. Napolitano, P. B. Macedo, and E. G. Hawkins

The range of a high temperature rotating cylinder viscometer has been extended so that viscosity measurements can be made between 10° to 10

10 poises to within 2-percent accuracy. This involves three different techniques. After a calibration constant has been deter- mined for the apparatus in the standard oil range, the other two constants for the higher viscosities were self- determined. In making measurements at the low vis- cosities, 10° to 10s poises, the outer cylinder is rotated

at constant speed and the torque measured on the inner

cylinder; from 10

4 ' 5 to 107-s poises the inner cylinder is rotated through an angle and timed as it returns to its zero position, and from 105 ' 5 to 10

10 poises the inner cylinder is driven through an angle at constant torque and timed as it traverses this angle. The Fulcher equation viscosity values obtained from previous measure- ments on Standard Glasses No. 710 and No. 711 by the

fiber elongation and rotating cylinder methods have been compared with the present results. 7 p. (Paper 69A5-

366, p. 449). 53
Internal friction in Zr02 containing CaO, J. B. Wachtman,

Jr., and W. C. Corwin

Internal friction was measured on polycrystalline Zr02 containing 4, 7, 10, 13, and 20 mole percent CaO.

In the range 10 to 20 percent a symmetrical internal

friction peak occurs with its maximum at about 300°C at

1 kHz; below 10 percent a nonsymmetrical peak occurs

at somewhat higher temperature which may be associated

with the presence of two phases. The symmetrical peak

in as-sintered specimens has the same dependence on CaO content as that reported for electrical resistivity

at 1000°C and is probably caused by motion of oxygen

vacancies. Annealing at 1000°C'for 1000 hours causes

reduction of the peak height but with a different composition dependence from that reported for annealing of electrical resistivity. The results suggest that oxygen

vacancies in calcia stabilized zirconia exist in several

states of binding but that detailed models are likely to be complex. 4 p. (Paper 69A5-367, p. 457).

Splitting of equivalent points in noncentrosymmetric space groups into subsets under homogeneous stress, H. S. Peiser, J. B. Wachtman, Jr., F. A. Munley, and

L. C. McCleary

Splitting of general positions in crystals into subsets

of equivalent sites under homogeneous stress has pre- viously been given for all centrosymmetric space groups;

the tabulation is here completed for all space groups by

listing the results for noncentrosymmetric space groups.

19 p. (Paper 69A5-368, p. 461). Inclusion of perfluoromethyl groups in the crystals of copolymers of tetrafluoroethylene and hexafluoropropylene, L. H. Bolz and R. K. Eby

X-ray diffraction has been used to measure the seperation of the molecular axes as a function of temperature, lamella thickness, and comonomer concentration in copolymers of tetrafluoroethylene and hexafluoropropylene. These data show that the increase of separation

with increasing concentration of perfluoromethyl groups

is a consequence of inclusion of the groups in the crystals and not an artifact associated with lamella thickness or crystal transition temperature. This conclusion is supported by the fact that diffuseness of some

of the x-ray reflections in the copolymers indicates the presence of molecular disorder which might be expected

from inclusion of the perfluoromethyl groups in the crystals. The lame lias in the copolymers are thinner

than those in the typical homopolymer and this aspect of the structure is the primary cause of the lower density

in the copolymers. Analysis of the available data in- dicates that this is also the situation in copolymers of ethylene and propylene. For both copolymer series, the lamellas is apparently increased by the inclusion of the methyl groups in the crystals as defects. 6 p. (Paper

69A5-369, p. 481).

Arc measurement of some argon transition probabilities, C. H. Popenoe and J. B. Shumaker, Jr. Transition probabilities and line shape parameters for three argon lines have been measured in a wall-stabilized

argon arc containing a trace of hydrogen. The H77 line shape measurement and the assumption of local thermo- dynamic equilibrium provided the determination of the argon level populations. From these three lines ten other argon line transition probabilities have been ob- tained by relative measurements in a pure argon arc. The results are compared with those of other investigators and sources of error are discussed. Key Words: Arc, argon, linewidth, plasma, spectroscopy,

stark broadening, transition probability. 14 p. (Paper 69A6-370, p. 495). Theoretical interpretation of the third spectrum of gold (Au m), Y. Shadmi The levels belonging to the configuration ^<f + 5^6p

of Au in were calculated and compared with experiment

with an rms error of about 260 cm" 1

. By using semiempirical methods and theoretical calculations it is shown that these configurations are best described by

the use of the j-j coupling scheme. Key Words: Analysis, atomic energy levels, atomic

spectra, doubly ionized gold, j-j coupling,

theoretical. 6 p. (Paper 69A6-371, p. 511). Photopolarographic behavior of inorganic depolarizers, R. A. Durst and J. K. Taylor

Nickel(II), cobalt(II), and uranium(VI) were studied polarographically to determine the effect of uv-visible

irradiation on their reduction characteristics. Photoeffects were observed in all cases. Two mechanisms

are proposed for the nickel photokinetic prewave, and

the complex photoeffects observed with cobalt and

uranium are described. Proposals are made for further studies to clarify and elucidate the photochemical

reactions and to apply this technique in the study of the activated states of ions prior to reduction. Key Words: Cobalt(II), depolarizers, nickel(II), photoactiviation, photochemical effects, photo- polarographic effects, polarographic measurements, radiation effects, uranium(VI). 6p. (Paper 69A6-372, p. 517). Spectral structure of critical opalescence: Binary mixture, R. D. Mountain The linearized hydrodynamic equations of irreversible thermodynamics are used to obtain the time dependence

of the kth Fourier component of a concentration fluctu- ation in the one-phase region of a binary mixture. The

frequency of the light scattered by concentration fluctu- ations near the critical mixing point is found to be broadened into a Lorentzian distribution with a half- width proportional to the mass diffusion coefficient, D. The possibility of detecting spsce dispersion in D is discussed. Key Words: Binary diffusion coefficient, concentration

fluctuations, critical opalescence, gas

laser, optical hetrodyne system, spectral

distribution of scattered light. 3 p. (Paper

69A6-373, p. 523). 54
Irregularities in the NBS (1955) provisional temperature

scale, H. M. Roder

This paper presents evidence for small irregularities

in the temperature scales employed between 50 and 100°K. The results are derived from the raw data defining the PVT surface of parahydrogen and are given in terms of temperature adjustments to the NBS (1955) scale. The

results suggest that an improvement of the temperature

scales presently in use would be desirable. Key Words: Gas thermometer, international practical temperature scale, NBS (1955) provisional temperature scale, platinum resistance ther- mometer. 4 p. (Paper 69A6-374, p. 527). Isotherms determined by the National Bureau of Standards

acoustical thermometer in the liquid helium temperature

range, G. Cataland and H. Plumb

Isotherms of the speed of sound in helium 4 gas as a function of pressure have been measured. Five of the isotherms in the liquid helium 4 temperature range have

been analyzed, and the results are discussed. The

acoustically determined values of temperature are consistently higher than the values of temperature associated

with the liquid helium 4 vapor pressure Scale (Ts „). The

deviations are 0.006°K, at 2.323°K, 0.007°K at 2.807°K, 0.008°K at 3.211°K, 9.010°K at 4.212°K and 0.012°K at 5.024°K. Key Words: Acoustical thermometer, isotherm at low

temperature. Speed of sound in helium gas, thermometry at low temperature. 4 p. (Paper 69A6-375, p. 531). Synthesis of D-glucose-3- 14 C and related compounds,

H. L. Frush, L. T. Sniegoski, N. B. Holt, and H. S. Isbell D-Glucose-3

14 C has been prepared by means of three, successive Kiliani syntheses. The process consists of

(a) the addition of 14 C-labeled cyanide to D-glyceralde- hyde; (b) hydrolysis of the cyanohydrins and conversion

of the resulting spimeric D-tetronic-]- 14 C acids into D-tetroses-2-I4 C by way of an improved Rosenmund re- duction of the acetylated tetronyl chlorides: (c) addition of nonlabeled cyanide to the mixture of the aldehydo

acetates of D-threose-i-14 C and D-erythrose-J-14 C; (d) hydrolysis of the cyanohydrins, and lactonization of the resulting mixture of four D-pentonic-/-14 C acids; (e) chro- matographic separation of these into three fractions;

(f) reduction of the fraction containing D-arabinono-2-14 C- and D-xylono-2- 14 C- lactone to the corresponding sugars, and chromatographic separation of these; and (g) conversion of D-arabinose-2-14 C into d -glucose-3- 14 C by a

third Kiliani synthesis. Approximately 3 percent of the radioactivity was obtained in the form of D-glucose-3-14 C. The process results in the production of a large number

of intermediate labeled compounds. Key Words: Aldonic acids; carbon-14-labeled carbohydrates; chromatography, paper; glucose-3-

carbon-14; hexoses-3-carbon-14; pentoses-2-

carbon-14; radioactive carbohydrates; Ro- senmund reductions; synthesis of radioactive

sugars; tetroses-l-carbon-14. 6 p. (Paper 69A6-376, p. 535). Correlation of large longitudinal deformations with dif- ferent strain histories, L. J. Zapas and T. Craft

It is shown that the BKZ incompressible elastic fluid theory is in excellent agreement with experimental re- sults obtained in simple extension. From single step

stress-relaxation data, the stress-strain response for a number of other simple extension histories are calculated

from the theory and are compared with experiments. Key Words: BKZ theory, constant rate of strain, creep,

elastic fluid, nonlinear behavior, polyisobutylene, polyviny lchloride, recovery, stress

relaxation. 6 p. (Paper 69A6-377, p. 541). Crystallography of tetracalcium phosphate, W. E. Brown

and E. F. Epstein Tetracalcium phosphate, Ca4 0(PO„)2

, has a monoclinic

modification with the parameters a= 11.99, 6=9. 48, and c=6.97 A, a = 90.8°, z=4, and space group P2, or P2,/m. From a comparison with the work of Tromel and Zaminer,

it is concluded that this salt has monoclinic and ortho- rhombic modifications with the most probable space

groups being P2, and P2,22,, respectively. The results support the view that tetracalcium phosphate has a layer-type structural relationship to hy- droxyapatite, Ca5 (OH)(P04 ) 3

. This would account, in part, for variations in the compositions of apatitic materials in which the ratio Ca/P is greater than 10/6, and

it suggests that tetracalcium phosphate may be present

in the mineral of tooth and bone. Key Words: Hilgenstockite, tetracalcium phosphate, hydroxyapatite, bone mineral, tooth mineral,

unit cell, symmetry, twinning. 5 p. (Paper

69A6-378, p. 547). Electrode potentials in fused systems X. Measurement

of cation concentration in molten salts using glass membrane electrodes, K. H. Stern and S. E. Meador A potentiometric method utilizing glass membrane

reference electrodes in a concentration cell for the continuous measurement in situ of molten salt composition

is presented. Relevant data for the AgCl-NaCl, AgBrNaBr, and Ag,S04 -Na,S04 systems are given. Using

cells of the type

.M,|M 1 A(flR ), M2 A(^)|glass| M1 A(a2 ), M2 A (<z;)| M, where the a' s are activities, the unknown mole fraction X2 can be calculated from the equation log^TTx;^ 2.303(RT/F)r'~

log ('^^)

where (' is a concentration-independent constant of the system and XR

is the concentration of Mt A in the refer5 5
ence electrode. The method is capable of measuring X2 in molten salt with an accuracy of better than 5 percent

over a concentration range of 104

. Application of the method to cations other than silver is discussed. Key Words: Analysis, electrodes, glass, membranes,

metal ions, molten salts, membrane electrodes. 4 p. (Paper 69A6-379, p. 553). TITLE PAGE AND CONTENTS TO VOL. 69, 5 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SEC- TION B. MATHEMATICS AND MATHEMATICAL

PHYSICS, VOLUME 70, JANUARY-JUNE 1966

Optical and magnetic spectra of bis N-propylsalicylaldi- minato copper (11), C. W. Reimann, G. F. Kokoszka,

and H. C. Allen, Jr. The electronic and electron spin resonance spectra of bis-/V-propylsalicylaldiminato copper (11) have been

measured. The measurements show that the g-tensor has some rhombic character with g z = 2.225, gx = 2.064, and

g =2.038. Four d-d transitions were observed in the electronic spectrum at 14,800, 16,800, 19,800, and 22,000 cm"1

. A consistent set of assignments has been made

based on the polarization data of the bands. These

results are compared to the results from other similar molecules. Key Words: Bis-N-propylsalicylaldiminato copper (11), optical spectra-four d-d transitions, para- magnetic resonance — three g values, square

planar complex. 4 p. (Paper 70A1-380, p. 1). Phase equilibria in the system niobium pentoxide- germanium dioxide, E. M. Levin The phase equilibrium diagram for the system Nb2 Os — Ge02 has been determined experimentally, using the quenching technique and examining the samples by opti- cal microscopy and x-ray powder diffrac tome try. The

system contains one compound, 9Nb2 05 "GeO^ which

melts incongruently at 1420°C. A eutectic between this compound and Ge02 is located at about 97 mol percent Ge02 and 1090°C. The system does not show liquid immiscibility, and it is concluded that the ionic field strength limit for two-liquid separation in the series of glass formers occurs with the Nb+S cation. Key Words: Germanium dioxide, immiscibility, niobium

pentoxide, phase equilibria. 6 p. (Paper 70A1-381, p. 5). Phase equilibria in the system niobium pentoxide-boric

acid, E. M. Levin The phase-equilibrium diagram for thti system Nb2 Os -

B2 03 was determined experimentally using the quenching

technique and examining the samples by optical mi- croscopy and x-ray powder diffractometry. The system

contains one binary compound of approximate composition B 3Nb2 Os

- B2 03 ," which melts incongruently at about 1150°C to H-Nb2 05 and B2 03 -rich liquid. A large region

of liquid immiscibility extends, at 1352°C, from 10 mole

percent Nb2 Os to 65.7 mole percent Nb2 Os

. The theoreti- cally calculated extent of immiscibility is in reasonable agreement with the experimentally determined value. Key Words: Boric oxide, immiscibility, niobium pentoxide, oxides, phase equilibria. 6 p. (Paper

70A1-382, p. 11). The solution to a nonlinear Lamm equation in the Faxen

approximation, I. H. Billick and G. H. Weiss An exact solution in the Faxen approximation is given

for the Lamm equation in which the sedimentation coefficient is related to concentration as s=s0 (l — kc). It is shown that the solution in this case can be expressed

in terms of the solution to the linear case (k=0) with a modified argument. The boundary sharpening phenomenon

expresses itself very clearly in the solution presented

here. Key Words: Sedimentation, Lamm equation, concentration dependence, nonlinear. 6 p. (Paper 70A1-383, p- 17). A line formula notation system for coordination compounds: III. Deviations from idealized configurations,

E. Silverton and R. F. Pasternack A linear notation describing the true configuration of a coordination complex has been developed to supplement

the McDonnell-Pasternack representation of the idealized

configuration. Criteria for determining major deviations

from the ideal configuration are proposed. The symmetry of the true configuration is described with the aid

of point-group notation; ligand sites are designated ac- cording to the system developed by McDonnell and

Pasternack. Key Words: Configuration, coordination, inorganic, linear notation, point-group, symmetry. 5 p. (Paper 70A1-384, p. 23). The spherulitic crystallization of isotactic polypropylene

from solution: On the evolution of monoclinic spherulites from dendritic chain-folded crystal precursors, F. Khoury

Polypropylene can be crystallized in the form of monoclinic (Natta) spherulites from moderately concentrated

solutions of the polymer in different solvents. A study

is presented involving both optical and electron mi- croscopy which has led to the characterization of the unusual structure and morphology of the dendritic pre- cursor crystals from which such spherulites evolve, as

well as the manner in which these precursors degenerate

progressively into spherulites. The overall shape of the above mentioned polypropylene dendrites approximates that of a rectangular paral- lelepiped (reference axes x, y, z, where x/y~l.l and y>2z). These dendrites consist of a dense but not com- 56
pact network of monolayer chain-folded lamellar branches which traverse the dendrite diagonally with respect to

its rectangular v, y cross section, the fold surfaces of the individual lamellar branches (i.e., those faces be- tween which the constituent molecules in each branch

fold back and forth) being normal to the x, y cross section. Electron diffraction data indicate that the orientation of the b-crystallographic axis is unique throughout

the cross-hatched array of lamellar branches and is parallel to the latter axis corresponding to the direction of slowest growth of the dendrite as a whole as well as its constituent branches. It has also been deduced

on the basis of the above features coupled with electron diffraction data and consideration of two different but plausible model twinned dendrites that the fold sur- faces of the lamellar branches are (001) and that the angle between the c-crystallographic axis in intercrossing branches is circa 80°. The possible origin of this unusual mode of twinning, which involves an 80° change

in the orientation of the chain axes in offspring branches

from that in parent branches, is briefly presented. The process of evolution of monoclinic polypropylene

spherulites from the unusually twinned dendritic crystal precursors is contrasted with the evolution of spherulites in other polymers; furthermore, the relevance of the observations presented in this study to an understanding

of the origin of the previously reported atypical fine structures exhibited by monoclinic spherulites of poly- propylene crystallized from the melt, is discussed. Key Words: Chain-folded, crystal, dendritic, electron microscopy, isotactic, monoclinic, mor- phology, optical microscopy, polymer, poly- propylene, precursor, spherulite. 33 p. (Paper 70A1-385, p. 29). Wavelengths, intensities, and Zeeman patterns in ytter- bium spectra (Yb i, n, in, iv) , W. F. Meggers and

C. H. Corliss

In 1937, Meggers and Scribner published a paper on

arc and spark spectra of ytterbium providing wavelengths,

relative intensities, and spectrum numbers of 1668 spectral lines, including about 400 for Yb 1, 1250 for Yb 11, and 12 for Yb 111. That work was handicapped by im- pure materials and conventional light sources. When

pure ytterbium metal and new light sources became avail- able in 1950, Meggers and Corliss decided to make a new description of ytterbium spectra. This new description includes data for 7300 spectral lines with wavelengths between 2000 A and 12000 A distributed as

follows: 1800 belong to Yb 1, 5100 to Yb 11, 430 to Yb in, and 5 to Yb iv. The Zeeman effect on 1300 lines has been observed in magnetic field intensities ranging

from 3.7 to 9.358 tesla (37000 to 93580 gauss). These

data were obtained for chemical identifications and for structural analyses of the first two spectra of ytterbium. Key Words: Spectra of ytterbium; ytterbium, spectra of; Zeeman effect in ytterbium; wavelengths of ytterbium. 44 p. (Paper 70A1-386, p. 63).

The mechanism of the depolymerization of polytetra- fluoroethylene with pyrolytic and radiolytic initiation, R. E. Florin, M. S. Parker, and L. A. Wall The rate of decomposition of polytetrafluoroethylene, exposed to gamma radiation in a flowing helium atmosphere, was studied in the range of temperatures 330 to 450°C, dose rates 0.1 to 7.6 MR/h, and sample thick- nesses 0.0006 to 0.01 cm. Rate measurements were made with a thermal conductivity cell in the exit stream, which recorded essentially the difference between the thermal and radiation-induced rate, in total molecules

of volatiles per second. At temperatures below about 400°C, the volatile products were a complex mixture. Above 400°C, tetrafluoroethylene was the major product, and the radiation-induced rate had an activation energy*

of 70 to 84 kj/mol. The radiation-induced rate is pro- portional to square root of dose rate, after appropriate allowance for the thermal initiation is made. Analysis

of the results suggests that the rate of the thermal initia- tion has a very high preexponential factor, 10 28 to 1030 s _1

. The activation energy for termination is large, E„>155 kj/mol. Diffusion and reverse reaction appear

to be minor factors above 400°C, but a surface reaction may be important. The thermal decomposition mechanism

seems clearly to consist of random initiation, termination by bimolecular recombination and a short kinetic chain

(13 at 480°C). Key Words: Depolymerization, polytetrafluoroethylene,

radiolysis, thermal decomposition, mechanisms of degradation, and gamma ray ef- fects. 17 p. (Paper 70A2-387, p. 115). Effect of some halogenated hydrocarbons on the flame speed of methane, C. Halpern The effects of five halogenated hydrocarbons on the flame speed of methane have been studied. Bromides

are more effective in reducing flame speeds than are chlorides and the reduction in flame speed is proportional to the amount of inhibitor added. Key Words: Flame speed, combustion, inhibitor, halo- genated hydrocarbon, bromide, chloride. 9 p. (Paper 70A2-388, p. 133). Rupture-disk ampoule for anhydrous addition of hydrogen

fluoride, A. R. Glasgow, Jr. The rapid increase in vapor pressure of liquid HF with temperature has been used in a rupture-disk-ampoule technique for mixing HF with materials under anhydrous

conditions. At room temperature where HF has a vp

near 1.4 atm, the disk with a rupture limit near 10 atm

confines the acid. At higher temperatures, 100 and 150°C, where the internal pressure of HF in the ampoule

is 10 and 30 atm, respectively, the disk is ruptured and

the acid is released. The construction of the ampoule

from platinum and reuseable platinum-iridium parts; the

57
details of the filling, sealing and weighing; and its use

for anhydrous addition of HF to other materials in a closed vessel are described. KeyWords: Anhydrous filling, anhydrous mixing, ampoule, capsule, hydrogen fluoride, metal,

rupture-disk. 3 p. (Paper 70A2-389, p. 143). Further studies in the annealing of a borosilicate glass,

S. Spinner and A. Napolitano Time-index of refraction isotherms for a borosilicate glass in the transformation region have been established. By comparing two quenched glasses of the same index, one quenched after attaining equilibrium at a given temperature and the other quenched from a temperature at which the specimen was approaching a higher value of index, curves similar to the one obtained by Ritland

in comparing rate cooled and quenched specimens are developed. Key Words: Annealing, borosilicate glass, glass, time- index of refraction isotherms, transformation

range, index of refraction. 6 p. (Paper 70A2-390, p. 147).

Infrared spectra of the hydrated borates, C. E. Weir

Infrared absorption spectra of 42 different hydrated

borates were obtained in the 2000-300 cm -1 range. A

few spectra were obtained between 4000 and 2000 cm"1

. Most spectra are complex and cannot be interpreted satisfactorily except in the case of the simplest anions. Many correlations between spectra are possible, however, and possible anion types have been deduced. Differentiation between triangular and tetrahedral boron is possible on the basis of the spectra but is less certain than in the case of the anhydrous borates. Key Words: Hydrated borates, infrared spectra, absorption spectra, borates, boron coordination, borate anions. 12 p. (Paper 70A2-391, P- 153). Interpretation of the solution absorption spectra of the (Pu02 ) + + and (Np02 ) + ions, J. C. Eisenstein and

M. H. L. Pryce Eleven years ago we proposed a model for the electronic configuration of ions of the uranyl type. The

solution absorption spectra of the (Pu02

) ions are here

interpreted on the basis of this model. The interpretation is based on exact calculations, and on plausible arguments about the strengths and widths of the absorption peaks. If suitable values are chosen for the Coulomb integrals, the spin-orbit coupling constant, and the ligand field parameters then the calculated energy levels agree well with the observed positions of the absorption peaks. Key Words: (Np02 ) ion, plutonyl ion, absorption spectrum. 9 p. (Paper 70A2-392, p. 165). Vapor pressure and heat of sublimation of rhenium, E. R. Plante and R. Szwarc The vapor pressure of rhenium was measured by the Langmuir method in the temperature range 2350-3050 °K

using a vacuum microbalance. The least squares line through the four series of data points is 4.5756 log P(atm)= 32.26 - 180700/T. Least squares lines for each

of the four series yield heats and entropies of sublimation higher than the conesponding third law values. The vapor pressure equation based on the average heat and entropy is, 4.5756 log P(atm)= 33.36 - 183500/T. The selected third law heat of sublimation, Atf° (298)

is 185.9 kcal mol-1. Our recommended equation for the vapor pressure is 4.5756 log P(atm)= 31.86 - 180200/T

based on our mean third law heat and tabulated values

for the entropies and enthalpies. Key Words: Heat of sublimation, Langmuir vaporization,

rate of vaporization, rhenium, vapor pressure. 5 p. (Paper 70A2-393, p. 175). Steady-state response of silicon radiation detectors of the diffused P—N junction type to x rays. II. Photodiode mode of operation, K. Scharf and J. H. Sparrow The response to x rays of silicon radiation detectors

of the p-n junction type was investigated with special consideration of their dependence on the applied volt- age. In agreement with theory, the photocurrent, I g

, was

found to consist of a voltage-independent part mainly determined by the average diffusion length of minority

carriers in the base layer, and a voltage-dependent part which is proporrional to the width of the depletion re- gion, w. Due to the voltage dependence of w, I g in- creases with increasing voltage applied, but its relative change produced by different voltages is independent of exposure rate and quality of radiation. Exposure rate and energy dependence of / expressed in relative values

are thus independent of applied voltage. Silicon radiation detectors, used as photodiodes can therefore be

useful for monitoring of radiations at exposure rates

larger than 1 R/m'm, taking advantage of the possibility

to increase current sensitivity by increasing the voltage V and to increase the voltage signal by increasing the load resistance R L

. There are however limitations in increasing V and R L because of the increasing noise

with increasing dark current and some dependence of measured current signals on R L

. The temperature coefficient of / is positive and independent of R L

, but shows some small voltage dependence. In the temperature range between 25 and 50°C, the average temperature coefficient is approximately 0.35 percent per de- gree centigrade. A value of the average diffusion length

of minority carriers in the base layer has been derived

from the measured voltage dependence of 1 g

. Key Words: X rays, dosimetry, silicon, silicon junctions, diodes, semiconducting devices, photodiodes, radiation detectors. 11 p. (Paper 70A2-394, p. 181). Absolute isotopic abundance ratios and the atomic weight

of a reference sample of chromium, W. R. Shields, T. J. Murphy, E. J. Catanzaro, and E. L. Garner Absolute values have been obtained for the isotropic abundance ratios of a reference sample of chromium,

using surface emission mass spectrometry. Samples of known isotropic composition, prepared from nearly pure 58
separated chromium isotopes, were used to calibrate

the mass spectrometers. The resulting absolute values

are Cr50 /CrS2 = 0.05 1859 ± 0.0001U0, CrS3 /CrS2 = 0. 1 13386 ± 0.00014^, Cr54 /Cr52 = 0.028222 ±0.000059, yielding an atomic weighc (C ,2 = 12) of 51.99612 ±0.00033- The in- dicated uncertainties are overall limits of error based on

95 percent confidence limits for the mean and allow- ances for effects of known sources of possible syste- matic error. Key Words: Chromium, atomic weight, isotopic abundances, absolute ratios. 5 p. (Paper 70A2-

395, p. 193). May-June 1966

various samples ranged in morphology from unoriented

isotropic samples to ones which showed a high degree of orientation of the b-axis along the sample growth direction. The mechanical measurements were made using a torsion pendulum apparatus of standard design, the di- rection of shear being normal to the b-axis for the ori- ented samples. The temperature range covered was from

100 to 400° K. No definite effects attributable to orientation were observed for either the y or /3 relaxation process, whereas for the a relaxation results for C" re- dicate that a slight decrease in peak height resulted from

the presence of lamellar orientation, particularly on the high temperature side of this peak. Data for the real and imaginary parts of the complex shear compliance are also discussed.

Thermal relaxation and brillouin scattering in liquids, R. D. Mountain Weak coupling of internal degrees of freedom of molecules to the translational degrees of freedom of a fluid results in additional modes of motion for density fluc- tuations. These new modes affect the spectral distribution of light scattered by density fluctuations so that the Landau-Placzek ratio is not satisfied. The case of thermal relaxation with a single relaxation time is worked

out in detail. Formulas for the spectral distribution of the scattered light, for the ratio of the intensities of the

central (Rayleigh) to the Brillouin components and for the phonon velocity are derived and applied to carbon

disulfide and carbon tetrachloride. The data for carbon

tetrachloride are shown to be inconsistent with the single

relaxation time model for thermal relaxation. Key Words: Brillouin scattering, density flu liquids, light scattering in liquids, Rayleigh

scattering, spectral distribution of scat- tered light, thermal relaxation, volume vis- cosity. 14 p. (Paper 70A3-396, p. 207). Density of polyethylene crystals grown from solution, G. M. Martin and E. Passaglia The density of Marlex 50 polyethylene crystals grown

from a 0.75 percent solution in p-xylene at 70°C was

measured by a pycnometric method. Difficulties in making the measurements to the necessary accuracy are dis- cussed. The values obtained were close to 0.98 g/cm 3 at 30°C and significantly less than the crystallographic density of 1.00 g/cm 3

. Several possible explanations of

this density deficiency are mentioned. Key Words: Crystals, density, polymer, ^-xylene, poly- pycnometer, density deficiency, weighing

method. 8 p. (Paper 70A3-397, p. 221). Mechanical relaxation in polyethylei various degrees of lamellar orien man and E. Passaglia

rystallized with

n, J. M. CrissKey Words: Polyethylene, mechanical relaxation, lamellar orientation, torsion pendulum, shear

fects. 8 p. (Paper 70A3-398, p. 225). Pentafluorophenyl alkyl and vinyl ethers, W. J. Pummer

and L. A. Wall The synthesis of various derivatives of pentafluoro- phenetole of the type C6 F5 OCH2 CH2 R is described. The R group was chlorine, bromine, hydroxyl, pentafluoro- phenoxy, acetoxy, and trifluoroacetoxy . 2-Pentafluoro- phenoxy-l,l,l-trifluoroethane and 1 , l-bis(pentafluoro- phenoxy)ethane were similarly synthesized. A study was made of the behavior of these ethers toward pyrolysis,

acids, and bases. In general, those ethers containing

/3-hydrogen atoms give pentafluorophenol on pyrolysis, Some compounds, such as 2-pentafluorophenoxyethyl

bromide, give rearranged products as well. Under basic

conditions, cleavage to pentafluorophenol was observed

with aqueous potassium hydroxide, whereas the use of solid potassium hydroxide pellets gives dehydrohalo- genated products. Concentrated sulfuric acid causes

cleavage of most of the ethers employed. 2-Pentafluoro- phenoxy-1, 1, 1-trifluoroethane resists attack both by acids and bases. The synthesis and polymerization of two new vinyl monomers, pentafluorophenyl vinyl ether and 1,2-difluoro- vinyl pentafluorophenyl ether, are also presented. Key Words: Ethers, pentafluorophenyl, pentafluorophenoxy, alkyl, vinyl, difluorovinyl, polymerization, and pyrolysis. 10 p. (Paper 70A3-

399, p. 233).

Calibration of germanium resistors at low temperatures

(2-20° Kelvin), G. Cataland and J. H. Plumb Two germanium resistors, C and D, have been refer- enced to values of temperature determined by the NBS

acoustical thermometer. The resistance-temperature cali- bration data for these resistors have been fitted to a The mechanical relaxation behavior of a set of well- characterized samples of polyethylene crystallized with

different degrees of lamellar orientation is reported. The

function of the form log 10 R = ^ A n (^°gio T)" and tne relts are presented. The resistors C and D that are used

secondary standards maintain the scale, NBS Provi- 59
sional Scale 2-20 (1965), to which public calibrations of germanium thermometers are referenced. The calibration apparatus and measurement techniques

that are employed in calibrating submitted resistors are described in detail. Additionally, data of three typical calibrations and their treatment by polynomial fitting are included to demonstrate the characteristics of some

commercially available germanium resistors. Key Words: Calibration, germanium resistors, low temperatures, secondary thermometers, ther- mometry. 10 p. (Paper 70A3-400, p. 243). Dissociation pressure of aluminum carbide using a ro- tating Knudsen cell, E. R. Plante and C. H. Schreyer An attempt was made to eliminate surface depletion

effects in the vaporization of aluminum carbide (A14 C3 ) by carrying out measurements in a Knudsen cell rotating

at an angle of 45 deg from the vertical. Results showed

that the surface depletion effects encountered with this material are due to formation of layers of graphite over

individual particles of aluminum carbide rather than to formation of a macroscopic layer of graphite over the sample. In order to achieve 'near-equilibrium pressures, vaporization experiments were carried out in which the sample was ground prior to each experiment and the amount of aluminum vaporized during each experiment

minimized. Third law treatment of these data yielded

AH°(298) of 91.6 kcal mol" 1 (383.3 kj mol" 1

) for the de- composition of MA14 C3 to form Al(g) and MQC), in good

agreement with data based on calorimetric studies. Key Words: Aluminum carbide, dissociation pressure, heat of decomposition, rotating Knudsen

cell, surface depletion. 5 p. (Paper 70A3-

401, p. 253).

Determination of intermolecular potential functions from macroscopic measurements, M. Klein The second virial, adiabatic Joule-Thomson, viscosity, and diffusion coefficients predicted for a number of potentials are compared with those predicted for the (12, 6) potential. A quantitative picture, as a function of temperature, is obtained of the ability of each property to act as a probe of the potential function. The transport properties are found to be the most sensitive probes, the Joule-Thomson coefficient next, and the second virial coefficient least, the last property being essentially useless in the range 2.0 <T*<.8.0 on the (12, 6) reduced

temperature scale. Key Words: Potential function, second virial, viscosity,

diffusion coefficient, Joule-Thomson, potential parameters. 11 p. (Paper 70A3-402,

p. 259).

60
3.Z PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 64B, JULY-DECEMBER I960 July-September 1960 Electric polarizability of a short rightcircular conducting

cylinder, T. T. Taylor A method similar to that employed by Smythe for calculating the capacitance of a freely charged short right circular conducting cylinder is used to calculate the electric polarizability tensor in the principal axis system for such a cylinder. Calculations to an accuracy of approxi- mately five significant figures are carried out for cylinders

with radius to half-length ratios of 1, 2, and 4. The

results are applicable to the design of artificial dielectrics. 9 p. (Paper 64B3-30, p. 135). Distribution of quantiles in samples from a bivariate population, M. M. Siddiqui Let F(x,y) be the joint distribution function of (X, Y), possessing a probability density function f(x,y). Let

F,(x) and F2(y) be the marginal distribution functions of X and Y respectively. Let a be a quantile of F/x) and /3 be a quantile of F2(y). A random sample (

k, Yk), k=\, 2, . . .

, n, is drawn and the values on each variate are ordered so that X/<X/and Yf< Yf if i<j. Let i and ;' .be the greatest integers such that i/n<Fx(a) and j/n<F2 (S), and let M be the number of elements ( X, Y) such that X<X/ and Y<Yj. The joint distribution of (M,X-,Yf) is obtained and is shown to be asymptotically normal. Esti- mates and confidence limits on the parameters of interest are also given. 6 p. (Paper 64B3-31, p. 145). Split Runge-Kutta method for simultaneous equations, J. R. Rice

Consider two simultaneous first order differential equations x'(t)=F(x,y,t), y'(t) = G(x,y,t). Runge-Kutta type

integration methods are developed which allow different integration steps to be used for these equations. These

methods retain the desirable properties of Runge-Kutta

methods, namely the self-starting property and ease of change of integration step. Two different approaches are considered and extensive experimental work is reported upon. Experiments are done both in situations where these methods are advantageous and where they are not. It is seen that these methods are more efficient than the normal Runge-Kutta methods if they are at all applicable and in ideal situations they give the same accuracy with 90

percent less computation. These methods are applicable

to six degree of freedom missile simulations, for which

they were developed. 20 p. (Paper 64B3-32, p. 151). A reduction formula for partitioned matrices, E. V. Haynsworth A theorem of L. Goddard and H. Schneider, concerning

square matrices A and B, of orders n and m, respectively, which satisfy an equation AX=XB lot some nxm matrix

X, is generalized here for rectangular matrices A and B, with dimensions n x xn2 , mx xm2

, which satisfy AX2 -XX B, where X,- has dimensions n,xmi for z=l,2. This result

is used to find reduction formulas for partitioned matrices

with submatrices, Ajj, having dimensions «,x«/, and

satisfying equations A,

; Xy = X,B,j. The reduction for- mulas given here are also generalizations of a theorem by

J. Williamson concerning partitioned matrices whose sub- matrices are all square and satisfy AX = XB, where B is triangular and X is square. 4 p. (Paper 64B3-33, p. 171). Selected bibliography of statistical literature, 1930 to 1957: III. Limit theorems, L. S. Deming

This is the third in a series of bibliographies dealing

with various specific subjects in the field of statistics. References and titles of important contributions concerning limiting distributions have been taken from technical

journals published throughout the world since 1930. 18 p. (Paper 64B3-34, P- 175).

October-December 1960 Magnetic polarizability of a short right circular conducting cylinder, T. T. Taylor The magnetic polarizability tensor of a short right cir- cular conducting cylinder is calculated in the principal axes system with a uniform quasi-static but nonpenetrating applied field. One of the two distinct tensor components is derived from results already obtained in con- nection with the electric polarizability of short conducting

cylinders. The other is calculated to an accuracy of four

to five significant figures for cylinders with radius to half-length ratios of l/2 , 1, 2, and 4. These results, when combined with the corresponding results for the electric polarizability, are applicable to the problem of calculating scattering from cylinders and to the design of

artificial dispersive media. 12 p. (Paper 64B4-35, p. 199). Accuracy of Monte Carlo methods in computing finite Markov chains, N. W. Bazley and P. J. Davis

Experiments are made with the Markov chain presented

by the children's game of Chutes and Ladders. Statistics, such as the average length of play, are computed on the IBM 704 from 2

1A simulated plays of the game. These

Monte Carlo results are then compared with the "exact

solution" obtained by powering the matrix of transition

probabilities. Convergence is shown to obey the familiar "N~%"" law. 5 p. (Paper 64B4-36, p. 211). Error bounds in the Rayleigh-Ritz approximation of eigenvectors, H. F. Weinberger The difference between any eigenvector up

of a linear operator A and its Rayleigh-Ritz approximation wp

is bounded in terms of the differences between the eigen- values A,- of A and their Rayleigh-Ritz upper bounds k/. The bound for the difference between up and wp

ap- proaches zero with Kp-\p

. 9 p. (Paper64B4-37, p.217).

Sequence transformations based on Tchebycheff approxi- mations, J. R. Rice

Let P = \p n \ be a real sequence and define the trans- formed sequence C (P) as follows: Consider the segment, 61
Pm. Pm + v Pn,+ 2 > Pm + 3 of P and determine a m , b m , and

cm so that max\a m bm +cn -pn \, n = m, m+l, m+2, m + 3 is minimized. The mth term of C (P) is taken to be cm. The effect of the transformation C on sequences of the k n n k 1 akn type p Q + 2aX , p0 +(- 1) lain'/Lbn^, and £ 0 + * s i=l i=-l i=l * considered. In each case Q is shown to be very effective

in accelerating convergence or decelerating divergence. For example, if the second sequence behaves as an k as

«->tx>, then the transformed sequence behaves as an^~

\

A similar transformation £) is defined by approximating

in the Tchebycheff sense a segment of P by abn cos

(d + n(f>) + c. The effect of D is studied for sequences of the above type and also for Pq + SI= jC^A" cos (#, + «</>,). These sequence transformations are similar in nature to Aitken's <5

2 -process and its generalization. A comparison

of the two types of transformations is made. Several examples are given to illustrate the effect of C and D on various sequences. 9 p. (Paper 64B4-38, p. 227).

Numerical solution of the frequency equations for the

flexural vibration of cylindrical rods, W. E. Tefft A numerical solution of Pickett's frequency equations

for the flexural vibration of cylindrical rods, based on the three-dimensional differential equations of elasticity, has been obtained on the IBM 704 computer. The results are presented in the form of tables of correction factors to be applied to the thin rod approximation for the fundamental

flexural resonance frequency and the first two overtones. These results provide an accurate means of calculating Young's modulus from the density, dimensions, and reso-

'

nance frequencies of cylindrical rods having diameter-to- length ratios as high as 0.6. 6 p. (Paper 64B4-39, P. 237). TITLE PAGE AND CONTENTS TO VOL. 64B. 3 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 65B, JANUARY-DECEMBER 1961 January-March 1961 On transient solutions of the "baffled piston" problem,

F. Oberhettinger The acoustic field produced by the movement of a

piston in an infinite rigid wall for arbitrary time depend- ency of the motion is given. 6 p. (Paper 65B1-40, p. 1).

Special types of partitioned matrices, E. V. Haynsworth

This paper extends the results of two previous papers

on partitioned matrices. General reduction formulas are given for partitioned matrices A of order np satisfying A(Xxlp

) = (Xxlp)B, where B is a matrix of order rp and Xx/p represents the direct product of an nxr matrix X of rank r with the identity matrix of order p. These formulas

are related to the formulas given in the previous papers

for partitioned matrices satisfying A(lp

x X) = (Ip

x X)B. 6 p. (Paper 65B1-41, p. 7).

Bound for the P-condition number of matrices with positive roots, P. J. Davis, E. V. Haynsworth, and M. Marcus Let a matrix A have positive roots 0<A,^A2 5 • • £An . Upper and lower bounds for the P-condition number of A, P = An /A1

, are given in terms of det A and one other symmetric function of the roots. 2 p. (Paper 65B1-42,

P- 13). Some computational problems involving integral matrices, O. Taussky

In this mainly expository article dealing particularly with recent problems, a computational problem of G. Pall

related to finite projective geometries is discussed in greater detail. Numerical results obtained on SEAC and SWAC are discussed. 3 p. (Paper 65B1-43, p. 15). Computational problems concerning the Hilbert matrix,

J. Todd

The interaction between theoretical mathematics and

practical computational expirement is illustrated by a discussion of recent work, at various centers, concerning

the Hilbert matrix. 4 p. (Paper 65B1-44, p. 19). Index to the distributions of mathematical statistics, F. A. Haight A fairly complete index of references to results on

statistical distributions published before January 1958

is presented. The material given for each distribution is a list of references relating to: (a) functions and constants which characterize the distribution, (b) derived

distributions, (c) estimation, (d) testing statistical hy- potheses, (e) miscellaneous. The distributions covered

are characterized as normal, type III, binomial, discrete,

distributions over (a,b), distributions over (a, °o), dis- tributions over (- oo, oo), miscellaneous univariate, mis- cellaneous bivariate, and miscellaneous multivariate. The number of entries varies from one or two for less well-known distributions to several hundred for the nor- mal distribution. This index should serve to eliminate unnecessary derivation of results already in the literature. 38 p. (Paper 65B1-45, p. 23). Selected bibliography of statistical literature, 1930 to 1957: IV. Markov chains and stochastic processes,

L. S. Deming and D. Gupta

This is the fourth in a series of bibliographies dealing

with various specific subjects in the field of statistics. Titles and references of important contributions to the study of Markov chains and stochastic processes have

been taken from technical journals published since 1930

in many countries that have been actively engaged in statistical analysis. 33 p. (Paper 65B1-46, p. 61). April-June 1961 .Optimal approximation for functions prescribed at equally spaced points, H. F. Weinberger

Explicit upper and lower bounds for the value F(u) of a

linear functional F applied to a function u(x) defined on

the interval 0.£x£l are given when u is prescribed at the 62
N+l points i/N, i-0 N, and a bound for the integral of u

c,cj3 is known. These bounds are optimal in the sense that they are attained for functions satisfying the prescribed conditions. Their computation involves the inversion of a matrix of size £ — 1 rather than N, which means that N is permitted to be large. 6 p. (Paper

65B2-47, p. 99).

Truncations in the method of intermediate problems for lower bounds to eigenvalues, N. W. Bazley and D. W. Fox Two new procedures are developed for determining lower bounds to the eigenvalues of linear operators. The

methods are based on the theory of semibounded self- adjoint operators in separable Hilbert space. Computation of the lower bounds is reduced to the solution of matrix problems. The procedures have immediate appli- cation in the estimation of eigenvalues and eigenvectors

of differential operators appearing in quantum mechanics.

7 p. (Paper 65B2-48, p. 105).

" Comparison theorems for symmetric functions of characteristic roots, M. Marcus

Several theorems are proved that give necessary and

sufficient conditions for A —B to be positive semidefinite

Hermitian. The conditions are in terms of the comparison

of elementary symmetric functions of the characteristic

roots of A+X and S + X as X varies over positive definite Hermitian matrices. 3 p. (Paper 65B2-49, p. 113). Some properties of the empirical distribution function of

a random process, M. M. Siddiqui Let{X(rj!be a continuous-time, continuous-in-the-mean,

real, strictly stationary random process. If x is a given number, denote bypT

(x) the proportion of the time X(t) exceeds x, 0<t<T. The covariance of pjfxj and (>t(x2 ) is obtained. An approximate solution for the variance of

a sample quantile is also given. The general results are specialized for Gaussian and X

2 processes, lip. (Paper

65B2-50, p. 117). Another extension of Heinz's inequality, M. Marcus A recent result of Heinz gives bounds on the bilinear form associated with a matrix Q in terms of bounds on

the two Hermitian parts of Q. This is extended to certain determinants associated with Q by use of the Grassmann

algebra. 2 p. (Paper 65B2-51, p. 129). Mean motions in conditionally periodic separable systems,

J. P. Vinti A search of the literature failed to disclose any general statement or proof of a theorem informally current among

dynamical astronomers. The present paper gives a proof

of the theorem, which states that, in any conditionally periodic separable system the mean frequency of any

separation coordinate qk is equal to v^ = dajdj k- Here

at is the energy and ] ^ is the k'th action variable. The

proof is carried out for nonsingular Staeckel systems, so

that it is applicable to any nonpolar orbit of an artificial satellite, when the potential leads to separability. 5 p. (Paper 65B2-52, p. 131).

Some boundary value problems involving plasma media,

J. R. Wait A plasma, consisting of a neutral mixture of electrons,

ions and molecules, in the presence of a constant magnetic field H0 , possesses a dielectric constant which is in the form of a tensor. Exact solutions of boundary

value problems involving such media are obtained for two-dimensional configurations. Explicit results are given for the reflection coefficients of stratified plasma

in planar and cylindrical geometry. 14 p. (Paper 65B2-

53, p. 137). A new decomposition formula in the theory of elasticity,

J. H. Bramble and L. E. Payne

In this paper a new representation formula for the spherical components of displacement in the theory of elasticity is obtained. This formula may be used to reduce mixed boundary value problems for the elastic sphere to standard problems in potential theory. 6 p. (Paper 65B2-

54, p. 151). Pointwise bounds in the Cauchy problem of elastic

plates, L. E. Payne

Let an elastic plate occupy a region D with boundary

C. On a portion 2 of C the deflection, slope, moment, and shear are measured. In terms of these data, and

crude bounds for the maximum deflection and moment,

pointwise bounds for the value of the deflection and its derivatives in D are obtained. These bounds are such

that if the data on £ and the loading perpendicular to the plane of the plate tend to zero, the deflection tends to zero at every point in D. Similar bounds are obtained in the slow flow problem for a viscous fluid. 7 p. (Paper

65B2-55, p. 157). July-September 1961 Theory of an accurate intermediary orbit for satellite astronomy, J. P. Vinti This paper derives an accurate intermediary orbit of an

artificial satellite of an oblate planet. The drag-free motion takes place under the action of a gravitational

potential which fits the even zonal harmonics exactly

through the second and approximately through the fourth,

in the case of the earth. This potential leads to separability of the Hamilton-Jacobi equation. Two alternative sets of orbital elements are set forth. The first set is related directly to initial conditions, but requires numerical factoring of a certain quartic to evaluate some of the integrals. The second set, on the other hand, permits exact factoring of both quartics that appear,

but is not related directly to initial conditions, so that

its members can best be obtained by a least-square fit of the solution over many orbital revolutions. The final solution is given in terms of certain uniformizing variables, whose periodic terms are correct through

the second order in the oblateness parameter and whose

secular terms are exact, for the intermediary orbit. These

exact solutions for the secular terms are expressed by means of certain rapidly converging series, with complete

avoidance of elliptic integrals of the third kind. Sections 9 and 10 give a summary and a list of symbols.

33 p. (Paper 65B3-56, p. 169). 63
Note on the "baffled piston" problem, F. Oberhettinger King's integral expression governing the problem of the time-harmonic motion of a piston in a rigid wall is simplified. 2 p. (Paper 65B3-57, p. 203). Some results on non-negative matrices, M. Marcus,

H. Mine, and B. Moyls

Recently Mirsky and Farahat proposed the problem of characterizing the class of doubly stochastic matrices

for which the least number of permutation matrices necessary to represent it as a convex sum has a prescribed

value. It is shown that this number can be related to the number of eigenvalues of modulus one. The problem of

similarity of doubly stochastic matrices is also treated. Finally, the question of transitivity of powers of sets of functions on the first n positive integers into itself is treated by defining a corresponding incidence matrix and

examining its powers. 5 p. (Paper 65B3-58, p. 205).

Probability inequalities of the Tchebycheff type, I. R. Savage

Thirteen basic inequalities relating tail area probabilities to moments are stated. One-tailed and multi- dimensional inequalities as well as the classical twotailed, unidimensional inequalities are presented.

Sufficient detail is given for each inequality so that the material can be used in handbook style without cross

referencing or familiarity with the entire article. Ex- amples of uses of the inequalities, tables comparing the

relative strengths of the inequalities, and bibliographic data through I960 are included. 12 p. (Paper 65B3-59,

p. 211). October - December 1961 Physical entities and mathematical representation,

C. H. Page

Certain basic postulates about physical observables

yield the structure of their mathematical representation. Measure equations are contrasted with quantity equations, and measurement units with abstract units. The

abstract vector spaces in which observables are repre- sented comprise the core of dimensional analysis. Systems of equations, units, and dimensions are dis- cussed, along with comments on rationalization. The

problem of assigning a dimension to angle is discussed, and a new proposal offered. 9 p. (Paper 65B4-60, p. 227). On the range of a fleet of aircraft, A. J. Goldman

J. N. Franklin has determined the maximum range of the last member of a fleet of n aircraft with identical fuel capacities and gallons-per-mile fuel efficiencies, on the assumptions that in-air exchange of fuel is unrestricted and that aircraft can be abandoned from the fleet at any

stage. The present paper extends the solution (a) to the case of aircraft with equal fuel efficiencies but different

fuel capacities, and (b) to the case of aircraft with equal

fuel capacities but different fuel efficiencies. 2 p. (Paper 65B4-61, p. 237).

Measurement of wave fronts without a reference standard: Part 1. The wave-front-shearing interferometer, J. B.

' Saunders The wave-front-shearing interferometer may be used to test any converging wave front regardless of whether or not it is symmetrical. A mathematical operation is de- scribed that permits complete analysis of the data. This

operation yields values of the deviations of wave fronts under test from a close fitting sphere. The reference surface may be chosen statistically so that the results are the deviations from a best fitting sphere. 6 p. (Paper

65B4-62, p. 239). On the evaluation of the function $(X) = J_ C

2ni J

a-ioo

e"

ln "+ k

"du for Real Values of A, W. Borsch-Supan The evaluation of the function mentioned in the title is done by deriving asymptotic formulas with error terms for the large values of |A|. For values of A in the remaining

finite interval, Simpson's rule is applied after suitable ' transformation of the path of integration and restriction to a finite portion of this path. A table of the function is given together with guesses of the errors due to the dis- cretization and the finite integration limits. 6 p. (Paper

6534-63, p. 245).

Analyticity and probability properties of one-dimensional Brownian motion, A. Ghaffari The most general solutions of one-dimensional Brownian motion, governed by the Chapman-Kolmogoroff functional equation, in the form of series of products of two

Laguerre polynomials are described. Some analytical and probabilistic properties of these solutions are dis- cussed and it is shown that these solutions are different from those given by A. N. Kolmogoroff. The limiting behavior of the probability function is investigated. A

derivation of the corresponding parabolic partial differ- ential equation is obtained. 10 p. (Paper 65B4-64, p. 251).

Some higher order integral identities with application to bounding techniques, J. H. Bramble and B. E. Hubbard

Let R be a simply connected region in EN with. smooth

bounding surface 5. For a sufficiently differentiable set

of functions we derive a class of quadratic integral identities relating surface integrals of derivatives to integrals over R. These identities are a generalization

of a first order identity given by L. Hormander (Compt. Rend. Douzieme Congr. des Mathematiciens Scandinaves Tenu a Lund, 1953, pp. 105-115) and L. E. Payne and

H. F. Weinberger (Pacific J. Math. (1958) pp. 551-573). As an example of an application of these identities we

consider a solution u of the boundary value problem t\u-pu=F in R and u = f on S. Here A denotes the Laplace operator and 0<p(x). ( We obtain pointwise a priori bounds for the derivatives of u in R in terms of a quadratic functional of an arbitrary function. Hence the Rayleigh-Ritz procedure can be used to make the error

arbitrarily small. 8 p. (Paper 65B4-65, p. 261). 64
A priori bounds in the first boundary value problem in elasticity, J. H. Bramble and L. E. Payne

In this paper we obtain bounds for the strain energy, and pointwise bounds for the solution of the first boundary value problem in the equations of elasticity. The

inequalities derived are such that the Rayleigh-Ritz

technique may be used to improve the bounds. 8 p. (Paper 65B4-66, p. 269). TITLE PAGE AND CONTENTS TO VOL. 65B. 3 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOL- UME 66B, JANUARY-DECEMBER, 1962

January-March 1962 Error bounds for eigenvectors of self-adjoint operators, N. W. Bazley and D. W. Fox

Error estimates are given for where ui is a normalized eigenvector of a self-adjoint operator A and

p is a normalized approximating vector. The estimates

contain upper and lower bounds to certain of the eigen- values of A together with the terms (A<p,*p) and (A<p,Aip). 4 p. (Paper 66B1-67, p. 1). . Intermediary equatorial orbits of an artificial satellite,

J. P. Vinti A previous paper derived the solution for the drag-free motion of an artificial satellite in the gravitational field of an oblate planet. The corresponding potential, ex- pressed in oblate spheroidal coordinates, leads to separability and represents the even zonal harmonics exactly

through the second, for any oblate planet, and approxi- mately through the fourth, in the case of the earth. The previous paper contained a restriction on the

orbital inclination /, viz /c</<180°-/c, where Ic might be

as large as 1°54' for an orbit sufficiently close to the

earth. The present paper removes this restriction and shows that many of the formulae for the periodic terms may be simplified, when the orbit is equatorial or almost

so. The results agree with those obtained by a direct two-dimensional solution, when the orbit is purely equatorial. 9 p. (Paper 66B1-68, p. 5). Selected bibliography of statistical literature 1930 to 1957: V. Frequency functions, moments, and graduation, L. S. Deming

This is the fifth in a series of bibliographies that deal with various specific subjects in the field of statistics. Over five hundred references and titles of important publications dealing with frequency functions, moments, and

graduation are given. 14 p. (Paper 66B1-69. p. 15). Measurement of wave fronts without a reference standard: Part 2. The wave front-reversing interferometer, J. B. Saunders

Interferometers permitting the measurement of shape and altered distribution of fringes are usually used to

compare either an unknown wave front with a known one

or an unknown surface with a standard reference surface. Any error in the reference surface introduces a corre- ponding error in the results sought. This paper describes an absolute measuring interferometer and the associated mathematical operations necessary for analysis of the

data. The reference surface is purely mathematical in nature and is therefore free from error. Deviations of converging wave fronts from perfect spheres, paraboloids

or ellipsoids are readily measured without the use of tangible reference surfaces. The equation of the reference surface may contain one

or more parameters whose value is sought. Thus, the eccentricity of the conicoid that best fits a mirror and

deviations of the surface from the true mathematical

curve are obtained simultaneously. The sensitivity of the test can be varied so that when testing large aspherical elements which depart very far from spheres the number and width of the fringes can be adjusted to any

desired values. 12 p. (Paper 66B1-70, p. 29). April - June 1962 Hindsight technique in machine translation of natural languages, I. Rhodes and F. L. Alt

In the proposed system for automatic syntactic analysis

of Russian sentences developed at the National Bureau

of Standards, the computer splits each Russian word into stem and ending and combines the information obtained

from these two elements into a morphological description

of the word, frequently containing several alternatives. The decision among such alternatives is normally made

on the basis of "predictions" arising from preceding words of the same clause. There are, however, cases in which no prediction is available to account for a word,

e.g., when the object of a verb occurs before the verb

itself. In such a case, instead of the usual prediction of

the object, we need "hindsight." Also, it may happen

that more than one of the morphological alternatives of a word agrees with predictions; or that a single morphological alternative agrees with several predictions; or

that only one of them agrees, yet there is a suspicion

that the agreement is spurious; or that no agreement at

all is found. It turns out that the alternating use of pre- diction and hindsight techniques overcomes most of these

troubles. 5 p. (Paper 66B2-71, p. 47). An extension of Jensen's theorem for the derivative of a polynomial and for infrapolynomials, O. Shisha The purpose of the paper is to generalize Jensen's

theorem on the zeros of the derivative of a real polynomial.' Results are first established for infrapolynomials and

therefrom derived for expressions of the form G\z) and

aG(z)+bzG'(z), where G(z) is a (complex) polynomial

and a, b are (complex) constants. An implicit aim the paper tries to serve is to further show how investigation

of infrapolynomials may be of help to the classical study

of the geometrical relation between the zeros of a poly- nomial and those of its derivative (or related polynomials).

3 p. (Paper 66B2-72, p. 53). Two matrix eigenvalue inequalities, S. Haber A lower bound is given for the quantity A,/A n , and an upper bound for the quantity A^A,,, where A, and A„ are 65
respectively the greatest and least characteristic roots of

a matrix with positive roots. The bounds involve the

first and second coefficients of the characteristic equation of the matrix. 2 p. (Paper 66B2-73, p. 57). Graphs for determining the power of Student's i-test M. C. Croarkin This paper presents charts for determining the operat- ing characteristics of Student's r-test. For a fixed level

of significance a, the charts give constant contours of

the power 8 depicting the number of observations plotted against a function of the difference in means. Both the one-sample and the two-sample (equal sample sizes) cases are treated for all combinations of a = 0.01, 0.02, 0.05, 0.10, 0.20 and

,3=0.10, 0.50, 0.90, 0.95, 0.99 except

(<z,.fl) = (0.10, 0.10), (0.10, 0.20). The graphs were constructed for two-sided tests but

within the given accuracy are equally applicable to one- sided tests. 12 p. (Paper 66B2-74, p. 59). July-September 1962 The first run preceded by a quota, A. J. Goldman and

B. K. Bender Let a,b,c be positive integers with b< min (a, c-1).

In an infinite sequence of independent trials with differ- ent success probabilities, define a "run" to consist of

a consecutive successes, and a "quota" to consist of c

or fewer consecutive trials containing b or more suc- cesses. Recursion formulas are derived for the probabilities governing the first appearance of a run immediately preceded by a quota. 13 p. (Paper 66B3-75, p. 77). Two theorems on matrices, M. Newman

Generalizations of theorems important in the iterative solution of systems of linear equations are given, to- gether with a lemma on the solution of a certain matrix

equation. 2 p. (Paper 66B3-76, p. 91). Mill's ratio for multivariate normal distributions, I. R. Savage Two easily, applied inequalities are given for the "tail probabilities" of multivariate normal distributions. 4 p. (Paper 66B3-77, p. 93). Angle as a fourth fundamental quantity, J. E. Romain The advantage of considering angle as a fourth funda- mental quantity of geometry and physics is stressed, and

an alternative approach is suggested to introduce an

angular dimension in such a way that the physical laws,

in any form, are dimensionally homogeneous. A few ex- amples are described to show how some equations of mathematics and mechanics should be revised to put the new point of view into practice. 4 p. (Paper 66B3-78,

p. 97).

Invalidity of Meixner's theorem in irreversible thermo- dynamics, R. E. Nettleton Meixner's theorem, on the preservation of the Onsager

symmetry of phenomenological coefficients under trans- formations of forces and fluxes which leave the rate of entropy production invariant, is shown to be invalid under

the restriction that all fluxes be even or odd under time- reversal and that the phenomenological equations be

valid for very short times. This result extends an earlier proof of Coleman and Truesdell, whose proof does not impose these two restrictions. A new formulation of Meixner's theorem is thus shown to be required, and this

is written down together with a statement of Onsager's

theorem which is consistent with it. 7 p. (Paper 66B3-

79, p. 101). Selected bibliography of statistical literature 1930 to 1957: VI. Theory of estimation and testing of hy- potheses, sampling distributions, and theory of sample

surveys, L. S. Deming

This is the sixth in a series of bibliographies that deal with various specific subjects in the field of statistics. Given here are approximately sixteen hundred references and titles to important publications dealing with the theory of statistical estimation and testing of hypotheses

(parametric case), sampling distributions, and the theory

of sample surveys. 43 p. (Paper 66B3-80, p. 109). October-December 1962 Reliability of a system in which spare parts deteriorate

in storage, G. H. Weiss The problem considered is that of determining the

failure statistics for a system consisting of a single part and n spares, in which it is assumed that that failure occurs at different rates in use and in storage. The

resulting equations can be solved explicitly when both types of failures follow a Poisson law. Otherwise

algorithms are given for the calculation of the failure probabilities. 4 p. (Paper 66 B4-81, p. 1 57). Estimation of dispersion parameters, W. A. Thompson, Jr. This paper deals with a topic in multivariate analysis. Consider that a sample of size n + l has been collected

(ojj'). Let ajj'/n denote the usual unbiased estimate of

Ojjf. Further, let 0<Ku be constants such that all characteristic roots of a matrix having the Wishart distribution lie in the interval [/, u] with probability 1 - a. A

theorem of Roy, Bose, and Gnanadesikan [Ann. Math.

Stat. 24, 513-536 (1953); Biometrika 44, 399-410 (1957)] may be stated as follows: The probability is 1 - a that every principal minor determinant of l~l (a jj')-(o jj') and

of (ct jj')—u~\a jj

1) is nonnegative). The previous result may be used to prove the main theorem of the present

paper. Theorem: The probability is at least 1 — a that the following system of relations hold simultaneously: "-l ay

} <ajj<l-l ajf, 7 = 1, . . ., p and

a jj'l^AV-1 -" j'j'YA, i = 4 p. (Paper 66B4-82,

p. 161).

66
Laguerre expansions for successive generations of a renewal process, G. H. Weiss

It is shown that the coefficients in the Laguerre

expansions for successive generations in a renewal

process are related by an algebraic convolution. Thus

the calculations are easily mechanized for computation.

4 p. (Paper 66B4-83, p. 165). Bounds on ratios of means, G. T. Cargo and 0. Shisha The purpose of this paper is to obtain upper bounds

for ratios of weighted means Afr , — <» < r<oo (see Hardy,

Littlewood, and Polya's "Inequalities," Chapter II). The inequalities arrived at are generalizations of that of Kantorovich. 2 p. (Paper 66B4-84, p. 169). A model for die viscoelastic behavior of rubberlike polymers including entanglement effects, R. S. Marvin and H. Oser A model representing the mechanical response of a rubberlike polymer is derived, using the same molecular concepts of entropy elasticity and a viscous parameter

expressing interactions between polymer molecules employed by Rouse, Bueche, and Zimm in their molecular

theories. Since the model developed here represents the mechanical response of a chain, rather than representing

the chain itself, it can be modified more easily than these

strict molecular theories to include effects due to en- tanglements between chains which modify the character

of the viscosity-molecular weight relationship at a criti- cal molecular weight. This modification is introduced, the results for both steady-state and transient response functions are calculated, and these results compared with experiment for the "standard" polyisobutylene. The agreement indicates

that the same "entanglements," whatever their precise

nature, are responsible for the proportionality of viscosity

to M

3 * 4 for a high molecular weight polymer, the steadystate elastic compliance, and the pseudo-equilibrium compliance at intermediate times or frequencies. 10 p. (Paper 66B4-85, p. 171). Black box maximization of circular coverage, C. T. Zahn, Jr. The principal problem considered is that of determining which placement of n disks of equal radius will cover as much as possible of a circular area A. Extensive computer experiments were performed to find the optimal arrangements and to compare the performances of several "black box" maximization methods as applied to this problem. A second version, in which A is divided into subregions and each disk is regarded as contributing to the coverage of only one subregion, is also treated. Related mathematical results and questions are dis- cussed. 36 p. (Paper 66B4-86, p. 181). An application of information theory to the analysis

of contingency tables, with a table of 2n In n, n =

1(1)10,000, S. Kullback, M. Kupperman, and H. H. Ku

In this paper we present a number of useful tests for contingency tables in conjunction with a useful table to

assist in the necessary computations. A consistent and

simple approach based on the notions of information

theory is used in developing the various test procedures and the results are analyzed in the form of analysis-of- information tables. Beginning with tests of hypotheses

for a one-way table, tests of hypotheses of specified

probabilities, independence, conditional independence, homogeneity of classifications, symmetry, and interaction

are developed or indicated for contingency tables of two,

three, four, and higher-order classifications. Extension

of these procedures to certain tests for Markov chains is indicated. Worked examples are given throughout the paper. A table of In In n for 72= 1(1)10,000 is appended

for use in computation. 27 p. (Paper 66B4-87, p. 217). TITLE PAGE AND CONTENTS TO VOL. 66B. 3p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SECTION B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 67 B, JANUARY-DECEMBER 1963. January. March 1963 Evaluation of a generalized elliptic-type integral, L. F. Epstein and J. H. Hubbell

Integrals of the form Qj(k) = f^ll-k2 cos 0]-(> +!/

>> d<t> where 0 < k < 1, and / is a positive integer, occur in a radiation field problem. Expressions for fl 0(&) and Q, t (k) have been derived in terms of complete elliptic integrals

of the first and second kinds. Using these values, and

the recursion formula (2;-lXl-*4)n/*)='4(7-l)0>. l(*)-(2/-'3)n^ a (A)

£lj(k) can be found for all values of / and k. A number of useful series expansions and other relations are given

for OyO), and tables are included for 0</(l)<9 and

0 <£2(0.01)< 0.99. 17 p. (Paper 67B1-88, p. 1). An algorithm for obtaining an orthogonal set of individual degrees of freedom for error, J. M. Cameron

This note presents an algorithm based on the GramSchmidt orthonormalization procedure for producing the coefficients of linear combinations of observations which

can be used for computing an orthogonal set of individual degrees of freedom for error from a set of observations.

4 p. (Paper 67B1-89, p. 19). Recognition of completely mixed games, A. J. Goldman A matrix game is called completely mixed if no optimal

strategy has a zero component. J. von Neumann's

necessary and sufficient "separated diagonals" condition for a 2-by-2 game to be completely mixed was ex- tended by Bohnenblust, Karlin, and Shapley to a suffi- cient condition for a general matrix game to be completely

mixed. The present paper gives still weaker sufficient conditions, thus facilitating recognition of a wider class

of completely mixed games as such. Special stress is 67
put on the possibility of using row and column permutations to transform a given matrix into one obeying the conditions. 7 p. (Paper 67B1-90, p. 23). A new type of computable inductor, C. H. Page

The mutual inductance analog of the generalized Thompson-Lampard theorem (for cross capacitances) is developed. An infinitely long cage of five parallel wires can yield an absolute inductance of 10- In llfi.

henries per meter. End-effects of order l/l 2 occur in a

finite cage, but can be reduced to order I//4 by using

eight wires. The eight-wire cage has the advantage of overdetermined

relations among the inductances to be measured, allowing

an estimate of experimental error in the calibration of a standard. Errors due to faulty cage geometry are shown

to be of the order of 1 in 107

. 9 p. (Paper 67B1-91,

p. 31). Numerical computation of the temporal development of

currents in a gas discharge tube, W. Borsch-Supan and H. Oser The behavior of electrical currents in a gas discharge

tube including space charge effects is investigated by numerical integration of the governing nonlinear partial differential equations. Both stationary solutions and the temporal development, under the influence of space charge

effects, are considered. It is found that the truncation

error can be greatly reduced by comparison with formal

solutions for constant fields. The discussion is essentially restricted to the more mathematical questions. 20 p. (Paper 67B1-92, p. 41). Tables of genera of groups of linear fractional transfor- mations, H. Fell, M. Newman, and E. Ordman The genera of the groups r„(n), T*(«) together with

certain associated number-theoretic functions are given

for l<n< 1000. 8 p. (Paper 67B1-93, p. 61). April-June 1963 Maximum cellular Boolean functions and perfect gray codes, A. J. Goldman and B. K. Bender

I. A Boolean function of n variables, considered as a subset of the discrete unit n-cube B„, is called cellular

if each of its connected components is a face of B n. Hamming's determination of optimal binary single-error- detecting codes is generalized to a characterization of

all proper cellular functions with the greatest possible number of elements. II. An analysis is made of a class

of Gray codes (Hamiltonian circuits on B n) with certain special properties, e.g., admitting for 0<d<n a partition into 2"~ d subpaths each forming a (/-dimensional face of B„. 8 p. (Paper 67B2-94, p. 77).

The meaning of Betti's reciprocal theorem, C. Truesdell

It is demonstrated that Betti's reciprocal theorem rep- resents a criterion for the existence of a stored-energy

function. 2 p. (Paper 67B2-95, p. 85). Effect of molecular weight on viscoelastic properties of polymers as predicted by a molecular theory, H. Oser

and R. S. Marvin

Calculations have been made covering the predictions of a model representing the viscoelastic behavior of rub- berlike polymers for molecular weights greater than Mc, M c being the lower limit of the range in which the vis- cosity is proportional to M

3 -4

. A pronounced difference

in the character of G" is predicted for polymers with molecular weights between five and ten times Mc as compared with those whose molecular weights are outside

this range. 4 p. (Paper 67B2-96, p. 87). Selected bibliography of statistical literature: supple- ment, 1958-1960, L. S. Deming

This is the last of a series of bibliographies that deal

with various specific subjects in the field of statistics. The preceding six bibliographies of the series gave ref- erences for the period from 1930 to 1957. This one is intended to supplement the others by bringing them up to date through I960. The references are arranged under the various subject titles published earlier in this series. 43 p. (Paper 67B2-97, p. 91). July-September 1963 Remarks on hypo-elasticity, C. Truesdell The difference between elasticity and hypo-elasticity

is illustrated by calculating explicitly the acoustic tensor

for principal waves in an arbitrary hypo-elasticity material. It is shown that all principal hypo-elasticity waves

are necessarily either transverse or longitudinal, just as

in an isotropic elastic material, and in distinction to an

anisotropic elastic material. 3 p. (Paper 67B3-98, p. 141). Error bounds in the pointwise approximation of solutions

of elastic plate problems, J. H. Bramble and L. E. Payne

Methods are presented for obtaining upper and lower pointwise bounds for the deflection (and its derivatives)

in certain physically interesting elastic plate problems.

11 p. (Paper 67B3-99, p. 145). Effect of error in measurement of elastic constants on the solutions of problems in classical elasticity, J. H. Bramble and L. E. Payne

It is well known that a small error in the measurement

of the elastic constants will result, for all physically

interesting boundary value problems, in small errors in the computed values of the stresses and displacements.

In this paper actual bounds are given for the error in both

68
the first and second boundary value problems. In addition

it is shown that as Poisson's ratio tends to Vi the results

for compressible theory tend to those for the analogous

problems in the classical incompressible theory. 11 p. (Paper 67B3-100, p. 157). Eigenfunctions of the /' configuration, J. C. Eisenstein Wave functions for three equivalent / electrons which

are eigenfunctions of L

2

, S

2

, ]

2

, and J z are given. 12 p. (Paper 67B3-101, p. 169). Zeros of first derivatives of Bessel functions of the first kind, /„'(*), 21<rz<50, 0<x<100, G. W. Morgenthaler and H. Reismann A table of zeros of first derivatives of Bessel functions

of the first kind, J n (x), is presented for 21< n <51, 0 <x 5-100. A brief discussion of table generation and accuracy is included. 3 p. (Paper 67B3-102, p. 181). October-December 1963 Zonal harmonic perturbations of an accurate reference

orbit of an artificial satellite, J. P. Vinti The theory developed in an earlier paper, for an accurate reference orbit of an artificial satellite, is first slightly modified, so as to prepare the way for a treatment

of zonal harmonic perturbations. Delaunay variables are next introduced, by means of certain linear combinations

of the action variables, along with their canonical conjugates. Application of the von Zeipel method then permits

the calculation of the most important zonal harmonic

perturbations. These arise from the third, with coefficient

/ 3 , and the residual fourtn, with coefficient The

accuracy of the secular and short-periodic effects is through terms of order ]\ and that of the long-periodic

effects is through terms of order J 1

. Since the reference

orbit itself, with its exact secular terms, takes care of

all but 0.5 percent of the deviation of the earth's gravitational field from spherical symmetry, the overall secular accuracy of the final orbit surpasses that of other second

order theories. The results are compared with those of Kozai. 32 p. (Paper 67B4-103, p. 191). Optimal periodic inspection programs for randomly failing equipment, G. H. Weiss

There have been many analyses made of models for equipment inspection, i.e., where a system may suffer a breakdown, but such an event is only discovered by an

inspection. Most analyses assume that the time for failure follows a negative exponential law which implies that only periodic inspection programs need be considered. Another model which has been analyzed by Barlow, Hunter, and Proschan finds the optimal program of inspections when the equipment reliability function is of general form, but a particular loss function is given. In this paper we

find the optimal periodic inspection program for systems which do not have negative exponential reliability functions. These programs have the virtue of simplicity even

though they may not be optimal in an absolute sense. Besides the periodic inspection programs, we derive re- sults for random inspection programs. 6 p. (Paper 67B4-

104, p. 223).

An analysis of pedestrian queueing, G. H. Weiss

This paper considers the steady state queueing properties of pedestrians who are delayed by traffic on a main

road. It is assumed that the size of the gap between two successive cars determines the probability that an indi- vidual pedestrian or a group of pedestrians will cross. The technique of imbedded Markov chains yields many new results as well as some previously found, by combinatorial methods by Tanner in 1951. 15 p. (Paper 67B4-105, p. 229). Solutions of the equation *P XX + - XV X + Kx"e <j/= 0, E. A. Kearsley The general solution of the equation Vxx + I Vx +Kxn

e ^=0

is displayed in terms of simple tabulated functions. The

existence and uniqueness of solutions of a simple boundary value problem are determined as a function of the parameter K. 3 p. (Paper 67B4-106, p. 245). On the graphs of finite idempotent Boolean relation matrices, D. Rosenblatt This paper presents a graph-theoretic characterization

of idempotent Boolean relation matrices of finite order. A relation-theoretic point of view is adopted in the paper. Idempotent matrices appear in the sequence of powers of any Boolean relation matrix, and are of purely theoretical as well as applied interest in connection with issues of convergence. The results provide a detailed description

of the connectivity and cyclic structure of the directed graphs of idempotent matrices. The study is basically motivated by certain connectivity and flow problems which

arise in the analysis of large-scale information systems. The formal results are exemplified in an investigation of the asymptotic forms of a recursive model of an information system which affords a conjoint representation of processes of communication and derivation of information. A second principal application is given in a process

formulation for the generation of consistent rank order- ings. The relation between system design and idempotent

forms is exhibited in the two applications. 8 p. (Paper 67B4-107, p. 249). TITLE PAGE AND CONTENTS TO VOL. 67B. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 68, JANUARY-DECEMBER 1964

January-March 1964 A note on a generalized elliptic integral, G. H. Weiss An expansion of n

/

t '-r»-*-»-v-"

69
in the neighborhood of k

2 = 1 is obtained by a method based on an Abelian theorem. 2 p. (Paper 68B 1-108, p. 1). An asymptotic expansion for the multivariate normal dis- tribution and Mills' ratio, H. Ruben An asymptotic expansion for the multivariate normal

integral over an infinitely extended rectangle, and therefore also for the associated multivariate Mills' ratio, is developed. The expansion is valid provided the vertex

of the rectangle lies in a polyhedral half-cone determined by the set of regression planes. The expansion obtained here is a natural gene:

tion of the classic expansion for the normal unh

integral, and the coefficients in it involve

of the conjugate multinormal distribution. 9 p. (Paper 68B 1-109, p. 3).

alizaCalculation

G. H. Weis

af multiple generating functi

This paper contains a discussion of the evaluation of generating functions of the form F (\x\) = 2 ... 2 ^

f

n v

. . . n

k )x

i "ix

2 "2 . . . x

k

n k where M (n ,

. . . n

fc ) is the

;th largest of the integers (n ^ . . . n

k

). An alternate technique to one proposed by Carlitz is used in the cal- culation. 3 p. (Paper 68B 1-1 10, p. 13). Some infinite sums involving zeros of J Q (x), L. F. Epstein The limiting form for small cfi values of the sums F

T{^)^ g(l/i3n

) 2r exp(-/S

n

2 0) exp (-|Qn V)

M

r(<j>) = £ (l/^) 2 '- 1 erfc V?)

erfc ( JS n

where r is an integer and

n is the nth zero of the Bessel function J Q

(x), have been obtained. Related functions which arise in these problems are also considered. 10 p. (Paper 68B1-111, p. 17). Optim:

A. J. Goldm

hin. ind degree-constrained subgraphs, The characterization of maximum-cardinality matchings

in linear graphs, by the nonexistence of augmenting

paths, has been extended by several authors to a similar characterization of maximum degree-constrained sub- graphs. This paper contains a proof of the extended

version by direct reduction to the case of matchings.

Possible algorithmic implications of the reduction are suggested. 3 p. (Paper 68B1-112, p. 27). Effects of a distribution on gap acceptance functions on

pedestrian queues, G. H. Weiss The theory of pedestrian queueing has been developed

by several authors under the assumption that all pedestrians have the same gap acceptance functions. In this paper the theory is modified to take into account a dis- tribution of gap acceptance functions. Some calculations made with the new formulas seem to indicate that only if traffic is very heavy will the difference between the re- sults of the two theories become noticeable. 3 p. (Paper 68B1-113, p. 31). iaussian wave functions for polyatomic

tegral formulas, M. Krauss

mole

Boys deter molecular integrals involving Is G; tered at arbitrary points in space,

explicit algebraic representation cases where the principal quantum nu

function equals the aximuthal quantu when the principal quantum numbe

muthal one the integrals were left a: ential operators. In this paper explicit formulas will be obtained for all cases by a different procedure than that used by Harris. 7 p. (Paper 68B1-114, p. 35).

xplicit formulas for all the relevant

;sian functions cen- H arris extended the

f the integrals to iber of theGaussian

l number. However, exceeded the azi- functions of differSpeckman

based on duplication of i

This paper is concerned with a statistical estimation procedure in which measurements of a quantity are taken

until two identical readings are obtained; this duplicated value is then taken as the estimate of the magnitude of

the quantity concerned. The properties of this estimation procedure have been investigated numerically, under the assumptions that the individual observations are rounded

values of measurements which have a normal distribution, and this estimator is compared with the arithmetic mean of two observations. It is shown that an arithmetic mean of'two observations from the rounded distribution

is almost always superior to the estimator described

above. The exception is where the rounding interval is so wide and the rounding lattice is so advantageously

placed that the only real reason for taking repeat measurements would be as a protection against gross errors.

5 p. (Paper 68B2-115, p. 49).

al Willke

ipplication of Youden's rank sum

id tables of one-sided percentage

: for c

The rank sum test for outliers advanced by W. J. Youden

provides a method for detecting if the measurement dis- tribution of any one of a group of objects has a mean sig- nificantly different from the rest. This paper discusses

a more general application of the rank sum procedure which permits a similar test on other parameters, such

as the variance, with the same tables. Tables of the 70
critical values of the extreme rank sum and the corre- sponding significance levels for one-sided tests are given in this paper to supplement similar tables for two- sided tests already published. 4 p. (Paper 68B 2- 1 16, p. 55). A generalization of Rennie's inequality, A. J. Goldman A generalization is given of Rennie's recent extension

of the Kantorovich inequality. The result is used in an

alternate proof of the sharp upper bounds for ratios of weighted means obtained by Cargo and Shisha. 5 p. (Paper 68B2-117, p. 59). On the asymptotic joint normality of quantiles from a multivariate distribution, L. Weiss A simple proof is given of the asymptotic joint nor- mality of sample quantiles from a multivariate population, under very mild conditions. The joint cumulative dis- tribution function of the quantiles is studied, rather than

the jcint probability density function. 2 p. (Paper

68B2-118, p. 65). Fitting y = /3x when the variance depends on x, J. V. Dyke

This paper presents some results concerning the selection of a method for estimating the slope of a straight

line through the origin. For fitting the line y = fix when

the variance of y is proportional to x p, it is well known

that the best estimate of /6 depends on p. In practice, however, only integer values of p would be convenient to work with. Oneof the estimators appropriate for p = 0,1,2 would probably be used if the value of p were in fact fractional, or if it were only approximately known. This

paper provides some guides for choosing the best among

these estimators in a particular situation. Formulas for the best estimators of /3 and their vari- ances are given. Estimators of /3 appropriate for integer values of p are compared in the case when p is not in- tegral, but is known, and in the case when p is only ap- proximately known. Estimation of the variances of esti- mators of jS is considered. Finally, some results are given on the effect of the spacing of the x values on the comparison of the estimators. 6 p. (Paper 68B1-119,

p. 67). Existence of k-edge connected ordinary graphs with pre- scribed degrees, J. Edmonds

An ordinary graph G is a set of objects called nodes

and a family of unordered pairs of the nodes called edges. The degree of a node in G is the number of edges in G

which contain it. G is called connected if it is not the union of two disjoint nonempty subgraphs. A graph H is called k-edge connected if deleting any fewer than k edges from H leaves a connected graph. It is proved that there exists a k-edge connected graph H for k > 1 with prescribed integer degrees d. if and only if there exists an ordinary graph with these degrees and all d.— k. There

exists an ordinary graph with these degrees and all d. ^ k. There exists a 1-connected (i.e., connected)

ordinary graph with prescribed positive integer degrees

d. if and only if there exists an ordinary graph with these

degrees and £ d

t - 2(« - 1). 2 p. (Paper 68B2- 120,

P- 73). Inequalities for solutions of mixed boundary value prob- lems for elastic plates, J. H. Bramble and L. E. Payne

In this paper a number of explicit a priori inequalities

for solutions of the plate equation are derived. These

inequalities together with the Rayleigh-Ritz technique may be used to compute error bo unds in various mixed

boundary value problems for elasti cplates. 18 p. (Paper 68B2-121, p. 75).

July- Generation and composit on of fun , A. J. Goldman

Suppose it is desired t o generat e particular function, from a specified se of initial func ions, using oper- ations from a specified r Hype)theses are given which ensure that the p

n be so arranged, that the intermediate function s arising at ce tain stages have

no more arguments than does the final function sought.

3 p. (Paper 68B3-122, p 99). Thermodynamics of perfect elastic fluids, B. Bernstein,

E. A. Kearsley, and L. J. Zapas A simple non-equilibrium thermodynamics is developed

and a particular example is studied. The theory is for- mulated to describe a viscoelastic fluid, capable of finite deformation, which need not be locally in or near a state of thermodynamic equilibrium. This fluid may support shear stresses only when away from local thermodynamic

equilibrium. A notion of time-temperature superposition

is contained in the formulation of the constitutive equations. Conservation of energy is obeyed and the second law of thermodynamics is satisfied as a consequence of simple requirements on the constitutive relations. In an

adiabatic isochoric motion the temperature increases when work is done on the material and decreases when

the material does work. For given volume and temperature, entropy decreases when the material is deformed

from equilibrium. It is shown in what general way vis- cosity depends upon temperature. For infinitesimal

strain, the special form of the stress-strain relations are derived in order to determine how temperature and time- temperature superposition enter in this case. 11 p. (Paper 68B3-123, p. 103). Zeros of polynomials in several variables and fractional order differences of their coefficients, B. Mond and

O. Shisha A classical result of Enestrom (if c

Q

, c v

(n — 1) are not all zero and if they satisy c

Q — c . . . — c - 0, then every zerc < of E Ckzk satisfies \C\ > 1) is generalized to polync mials in several variables. A

result in the same direc tion, involving fractional order differences of coefficie its, is then established. 4 p. (Paper 68B3-124, p. 115). 71
Theory of radiation from sources immersed in anisotropic media, J. R. Wait The electromagnetic fields produced by an electric dipole immersed in an anisotropic medium are considered. Various approaches to the problem are outlined with special reference to a cold plasma. An attempt is made to show the close relationship between previously published work on this subject. It is shown that information on the radiation field in an anisotropic media may be obtained

directly from the shape of the refractive index surface.

18 p. (Paper 68B3-125, p. 119). October-December 1964 Hydrodynamic fluctuations and Stokes' law friction, R. Zwanzig The factional force on a Brownian motion particle can be expressed by means of the time-correlation of the fluctuating force on the particle. We show that this method, applied to a spherical particle in a viscous in- compressible fluid, leads to Stokes' Law. The calculation is based on the theory of hydrodynamic fluctuations due to Landau and Lifshitz, and on a hydrodynamic theo- rem due to Faxen. 3 p. (Paper 68B 1-126, p. 143). Equivalence of certain inequalities complementing those

of Cauchy-Schwarz and Holder, J. B. Diaz, A. J. Goldman, and F. T. Metcalf An inequality due to the first and third authors, which complements the Cauchy-Schwarz Inequality, is shown

equivalent to a result of Rennie. A more general in- equality due to the first and third authors, which comple- ments that of Holder, is proven equivalent to a previously published generalization of Rennie 's Inequality. 3 p. (Paper 68B4-127, p. 147). Weak generalized inverses and minimum variance linear unbiased estimation, A. J. Goldman and M. Zelen

This paper presents a unified account of the theory of least squares and its adaptations to statistical models

more complicated than the classical one. First comes a development of the properties of weak generalized matrix

inverses, a useful variant of the more familiar pseudoinverse. These properties are employed in a proof of the usual Gauss theorem, and in analyzing the case in which known linear restraints are obeyed by the parameters. Another situation treated is that of a singular variance- covariance mattix for the observations. Applications in- clude the case of equi-correlated variables (including estimation despite ignorance of the correlation), linear "restraints" subject to random error, and stepwise linear estimation. 22 p. (Paper 68B4- 128, p. 124). Improvement of bounds to eigenvalues of operators of the form TT, N. W. Bazley and D. W. Fox

The authors generalize a method of Lehmann and Maehly for upper and lower bounds of eigenvalues of self- adjoint operators in Hilbert space by using a device in- troduced by Kato. The resulting procedure can be usedto improve bounds found by the Rayleigh-Ritz method and

the comparison methods of Weinstein, Aronszajn, and the authors by means of calculations involving easily found

vectors; and it is especially suitable for application to problems of vibration of continuous elastic systems.

Further a theorem of Kato is interpreted and extended by

the results obtained, lip. (Paper 68B4- 129, p. 173). The greatest crossnorm, R. Schatten Let S be a complex Hilbert space. If T is a completely continuous operator on § then (T*T) 1/2 is also completely continuous and nonnegative. If X , X

2

,

. rep- present all the nonzero eigenvalues of (T* T) 1/

2

—each

eigenvalue repeated in the sequence the number of times

equal to its multiplicity— we may form the sum 2 A. which we denote by r{T). By definition, the trace-class (re) By definition, the trace-class (rc) consists of all those

operators T for which r(T) is finite, (rc) forms a linear space and r(T) defines there a norm. The resulting normed linear space turns out to be complete, and the operators of finite rank form a dense set in (tc).

It is of significance to observe that for operators T of

finite rank, t(T) may be also expressed via concepts

meaningful in a perfectly general Banach space. This

observation permits then to carry over to perfectly general Banach spaces the concept of a trace-class of operators: One considers the linear space of all the operators T of finite rank on the given Banach space. There one

defines r(T) via the concepts meaningful in general Banach spaces. The customary metric completion of the so resulting normed linear space furnishes then the desited trace-class of operators. 9 p. (Paper 68B4-130,

p. 185). TITLE PAGE AND CONTENTS TO VOL. 68. 3 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 69, JANUARY-DECEMBER 1965

January-June 1965 Lectures on matroids, W. T. Tutte This work is based on a series of papers in the Transactions of the American Mathematical Society: A homot- opy theorem for matroids, I and II, 88, 144-174 (1958); and

Matroids and graphs, 90, 572-552 ( 1959). These papers set out a theory of matroids, with special emphasis on the conditions for a matroid to represent a graph. The treatment is as rigorous as that in the original papers, but it is hoped that the present work is easier to read, because less condensed. Many theorems originally proved only for "regular matroids" have been generalized

to the less restricted class of "binary" ones, and the

last part of the work has been improved by the incorporation of a theory of "even" matroids. 47 p. (Paper 69B1&2-13L p- 1). Menger's theorem for matroids, W. T. Tutte Menger's Theorem asserts that if x and y are vertices

of a graph which are not joined by an edge and if it takes 72
at least k other vertices to separate x and y, then x and

y can be joined by k distinct arcs in the graph which have only their end-vertices in common. Much of the paper is taken up by the determination of an equivalent statement involving the ranks of subgraphs

of contractions of the original graph, but not explicitly mentioning vertices. An analogous proposition for matroids can then be stated. For matroid theory has analogs

of subgraphs and contractions, but not of vertices. Once

stated the generalized theorem can be proved without

great difficulty. 5 p. (Paper 69B1&2-132, p. 49). Single-element extensions of matroids, H. H. Crapo

Extensions of matroids to sets containing one additional element are characterized in terms of modular cuts

of the lattice of closed subsets. An equivalent characterization is given in terms of linear subclasses of the

set of circuits or bonds of the matroid. A scheme for the construction of finite geometric lattices is derived and

the existence of at least 2" nonisomorphic matroids on an ^-element set is established. 11 p. (Paper 69B1&2-133,

p. 55). Minimum partition of a matroid into independent subsets,

J. Edmonds A matroid M is a finite set M of elements with a family

of subsets, called independent, such that (1) every subset of an independent set is independent, and (2) for every subset A of M, all maximal independent subsets of A have the same cardinality, called the rank r(A) of A.

It is proved that a matroid can be partitioned into as few

as k sets, each independent, if and only if every subset A has cardinality at most k r(A). 6 p. (Paper 69B1&2-

134, p. 67). Lehman's switching game and a theorem of Tutte and

Nash-Williams, J. Edmonds

The results cited in the title are unified by the follow- ing theorem: For any matroid M and any subsets N and K of elements in M, there exist as many as k disjoint subsets of N which span K and which span each other if and only if there is no contraction matroid M x A where N n A partitions into as few as k sets such that each

is independent in M x A and such that at least one of them does not span KnA in M x A. 5 p. (P aper 69B 1&2-

135, p. 73). On the connection between the properties of oriented

linear graphs and analyses of lumped physical sys- tems, H. M. Trent

Lecture. 6 p. (P aper 69B 1&2- 136, p. 79). Character subgroups of F-groups, M. I. Knopp and M. Newman

A necessary and sufficient condition is given that a subgroup of an F-group G be definable by the vanishing

of an additive character on G. 2 p. (Paper 69B1&2-137,

P- 85).

A note on multipliers of difference sets, R. A. Brualdi Let v, k, A be integers with 0 < A < k < v — L A set D = {d , d ,

. . ., d \ of k integers distinct modulo vis a difference set with parameters v, k, and A provided every nonzero residue c modulo v can be written in precisely A ways in the form d. - d. = c (mod v). An integer / is a multiplier of D provided

7 there exists an integer s such

that the sets of numbers [td^, . . ., td

k

\ and \d

1 + s, . . ., d

k + s \ coincide modulo v. It is shown that -1 cannot be

a multiplier of the difference set D. A consequence is that a Hadamard matrix of order v cannot be a symmetric

circulant for v > 4. 3 p. (Paper 69B1&2-138, p. 87). Modification of Edmonds' maximum matching algorithm,

C. Witzgall and C. T. Zahn, Jr. Edmonds developed an efficient algorithm for finding

in a given graph G a matching of maximum cardinality. This algorithm "shrinks" parts of the graph G. Although

helpful to the intuitive understanding of the theory, shrinking is complicated to implement on an electronic computer. The modification presented in this paper

avoids shrinking. It employs instead a treelike arrange- ment of alternating paths. The possibility of such an arrangement is also of theoretical interest, and its proof forms the main part of the paper. 8 p. (Paper 69B1&2-

139, p. 91). On measurable sets and functions, A. J. Goldman The relation L = f~

l (B), where L and / are Lebesgue

measurable and B is a Borel set, is studied. Any one of

of L, B, f can be specified and the relation is solvable; one can also specify two of the three possible pairs. The relation characterizes (in a sense made precise in the text) the classes of Lebesgue measurable functions and sets; that it does so for the class of Borel sets as

well is left as a conjecture, whose truth would imply that the functions which preserve Lebesgue measurability as second composition factors [i.e., g in g(b(x))] are pre- cisely the Borel measurable functions. 2 p. (Paper 69B1&2-140, p. 99). Characteristic relations for nonperiodic solutions of Mathieu's equation, T. Tamir and H. C. Wang A simple compact formulation is presented for the eigenvalue A of the Mathieu differential equation y

" +

(A — 2b 2 cos 26)y = 0. The relations obtained thereby

are employed to examine certain characteristic features

of the solutions y = e ivd ^ c

n e 2in6

in both stable (v complex) regions. In the vicinity of the boundaries

(v = m = integer) which separate these regions, the ex- pressions derived for A are nonsingular and continuous;

at the boundaries, these expressions are identical to available expansions which become therefore special cases of a more general formulation. The results are used to determine the magnitudes of the harmonic coefficients c and the instability intervals. The latter are shown to be intimately related to restrictions on the complex value of the characteristic exponent v. In addition,

73
simple approximations that are suitable for perturbation problems {b 2 small) are derived for all of the characteristic quantities. 19 p. (Paper 69B1&2-141, p. 101). On the surface duality of linear graphs, J. Edmonds THEOREM: A 1-1 correspondence between the edges

of two connected graphs is a duality with respect to some

polyhedral surface embedding if and only if for each

vertex v of each graph, the edges which meet v corre- spond in the other graph to the edges of a subgraph G f which is connected and which has an even number of its edge-ends to each of its vertices (where if an edge meets

v at both ends its image in G is counted twice). Using

the Euler formula, the characteristic of the surface is de- termined by the two graphs. Thus, the theorem general- izes a variation of the H. Whitney condition for a graph

to be planar. 3 p. (Paper 69B1&2-142, p. 121). Maximum matching and a polyhedron with 0,1-vertices,

J. Edmonds

A matching in a graph G is a subset of edges in G such

that no two meet the same node in G. The convex poly- hedron C is characterized, where the extreme points of C

correspond to the matchings in G. Where each edge of G

carries a real numerical weight, an efficient algorithm is described for finding a matching in G with maximum

weight-sum. 6 p. (P aper 69B 1&2- 143, p. 125).

July-September 1965 A development of the theory of errors with reference to economy of time, M. D. Hersey, Prefatory Note, C. Eisenhart Methods of economizing time can be considered with reference to the design and disposition of apparatus; or with reference to the experimental observations; or with reference to the computation of the result.

In connection with the problem of designing (or adjusting) apparatus so as to secure the most favorable result

in a limited time, a criterion for "best magnitudes," pre- viously proposed, is here further considered, and illus- trated by an application to the interferometer. Investigation of economy of time in taking the observations themselves leads to two distinct problems: first, that of the division of time amongst the components of an

indirect measurement; second, that of the best grouping

of observations in determining any one quantity. The solution of the first problem comes out in terms of

three data-namely, the relative precision of, and the

relative time consumed in, a single observation on the respective components; together with the derivatives ex- pressing the sensitiveness of the result with respect to the several components. Of these data the first two are postulated, while the third is implicitly contained in the equation which defines the measurement in question. The solution is independent of the existence of constant The second problem consists in establishing the most

profitable compromise between the extremes of (1) re- peating a large number of readings under the same conditions (or on the same sample, in order to diminish the

effect of observational errors; or (2) resting content with

a lower precision on each determination, in order to cut down systematic errors by making numerous independent

determinations (or by trying many different samples). The most economical number of observations to make in any one group before stopping to change conditions (or to set up a new sample) in preparation for a new group is directly expressible in terms of two postulated data:

first, the ratio of the average observational error to the average systematic error anticipated; and, second, the

ratio of the time required in preparing for a new group to the time used in a single observation. This result is in- dependent of the total time available. The first problem is illustrated by the division of time

in a gravity determination by Kater's pendulum; the sec- ond, by the determination of the heat of combustion of coal from a series of samples. A combination of the two problems may also arise. The solution is equally

straightforward.

Finally, in regard to computation, the availability of an automatic device for linear least-squares adjustment makes it now desirable to have some means of throwing

an assumed relation into linear form without disturbing

the relative weights of the observations. A general for- mula for doing this is here proposed, and applied to the determination of thermal expansion coefficients. Throughout, the object of the paper is to establish cer- tain general principles governing the accuracy attainable

in physical measurements, independently of the particular apparatus or process in question. 8 p. (P aper 69B3- 144,

p. 139). Transversals and matroid partition, J. Edmonds and D.

R. Fulkerson

In section 1, transversal matroids are associated with "systems of distinct representatives" (i.e. , transversals)

and, more generally, matching matroids are associated

with matchings in graphs. The transversal matroids and

a theorem of P. J. Higgins on disjoint transversals of a family of sets, along with the well-known graphic matroids and some theorems on decomposition of graphs

into forests, motivate some theorems on partitions of general matroids into independent sets. In section 2, the relationship between transversal result and matroid re- sult is illustrated for a special case of later theorems.

In section 3, theorems on transversals are proved using network flows. In sections 4 and 5, theorems on matroids

are presented which imply various results on decomposition into transversals or into forests. In section 6, the matching matroids are shown to be simply the transversal matroids. For the most part, sections 2, 3, 4-5, and 6 can be read separately. 7 p. (Paper 69B3-145, p. 147). Some L

2 Markoff inequalities, L. F. Shampine A number of authors have studied inequalities for poly- nomials of degree n of the form lls'-HI**-' l|p*

( 4

Iterated use of such inequalities give inequalities for higher derivatives. This paper determines the power p and constant A for the second derivatives for certain 74
weighted L, norms. The iterated inequalities are not

sharp. 4 p. (Paper 69B3- 146, p. 155). Some theorems on the permanent, R. A. Brualdi and M. Newman

The purpose of this paper is to prove some miscel- laneous theorems on the permanent. We define f(k) to be

the smallest order of a 0, 1 matrix with permanent equal

to k and obtain an asymptotic formula for log f(k). A few theorems concerning the permanent of a circulant matrix

are also proved. 5 p. (Paper 69B3-147, p. 159). On Kirchhoff's law and its generalized application to absorption and emission by cavities, F. J. Kelly

Several authors have made the assumption that Kirchhoff's Law holds for the apparent local spectral emittance and apparent local spectral absorptance of any point on

the interior surface of a cavity. The correctness of this assumption is demonstrated under certain general conditions, and its practical application to the calculation of the total flux absorbed by a cavity or spacecraft is dis- cussed. A further application to the case of a nonisothermal cavity or spacecraft is derived. By this deviation an easy method for determining the total flux emitted

from such a nonisothermal cavity is found when the

distribution of the apparent local spectral emittance of

the isothermal cavity is known. The economy and versatility of this method is shown by the calculation of the

total flux emitted from a nonisothermal cylindrical cavity

for several arbitrary cases of temperature distribution on

the interior surface of the cavity. Finally, the integral equation for a diffuse cavity whose wall emittance varies

with position on the wall is transformed to an equation having a symmetric kernel. 7 p. (Paper 69B4-148,

p. 165). On a relation between two-dimensional Fourier integrals and series of Hankel transforms, J. V. Cornacchio and

R. P. Soni Procedures are developed for expressing two- dimensional transforms. 2 p. (Paper 69B 3- 149, p. 173). On convex metrics, C. Witzgall

It is shown that a metric on a linear space, if convex

in each variable, must also be invariant under translation, and so must arise from a norm. The question occurs in connection with determining the optimal location of a central facility. 3 p. (Paper 69B3-150, p. 175). Some extensions of Banach's contraction theorem, P. R. Meyers The class of self-mappings of a metrizable space which are contractions under at least one complete metric

is shown to include a subset of the local contractions. The required metric is constructed in a sequence of

steps. 6 p. (Paper 69B3-151, p. 179). A variant of the two-dimensional Riemann integral, A.

J. Goldman

For a variant of the two-dimensional Riemann integral suggested by S. Marcus, it is shown that the only integrate functions which are continuous (or merely con- tinuous separately in one of the variables) are the constant functions. The integrable discontinuous functions

are proven to be constant except possibly on a set which

is "small" in a sense made precise in the paper. 4 p. (Paper 69B3-152, p. 185). The use of finite polynomial rings in the factorization of the general polynomial, D. B. Lloyd The problem of decomposing the general polynomial

over the integers into its prime polynomial factors is solved by the use of congruential functions. The following principles are used:

I. If a polynomial P is reducible into rational integral

factors, then P m

is similarly reducible in J m

, where P

m

is the polynomial P with its coefficients reduced modulo m (m a prime).

II. The factors of P are congruent modulo m to the

factors of P.

III. If P

m

is irreducible in J m

, then P is irreducible over the rational integers. (Contrapositive of I.) Accompanying tables are provided which give the fac- tors of all congruential polynomials over the ring of integers modulo 2, 3, 5, up through degrees 11, 11, and

8, respectively. 24 p. (Paper 69B3-153, p. 159). A primal (all-integer) integer programming algorithm, R.

D. Young The algorithm is most closely related to three existing procedures; the simplex method of G. B. Dantzig for linear programming problems, the Gomory all-integer in- teger programming algorithm, and the direct algorithm for integer programming of Ben-Israel and Charnes. The algorithm is similar to the Gomory all-integer algorithm in these respects: (i) it is an all-integer algorithm; (ii) it uses the same cut generation procedure; (iii)

it uses the cut row as the pivot row; and (iv) the pivot coefficient always has unit value. While the dual method

provides the vehicle for moving from tableau to tableau

in the Gomory all-integer algorithm, the simplex method

has the analagous role in the primal algorithm. Thus in a general sense this algorithm is a primal analog to the

(dual) Gomory all-integer algorithm. The direct algorithm of Ben-Israel and Charnes also has the above similarities to the Gomory all-integer al- gorithm, but has one significant difference; an iteration or cycle of the direct algorithm must frequently include

the solution of an "auxiliary problem" (which is itself an integer programming problem) or a determination that no solution to the "auxiliary problem" exists. In contrast, the cycles of the primal algorithm include only the adjoining of a Gomory cut and the execution of the change

of basis procedure of the simplex method. The procedure of the algorithm and the proof of finite- ness are founded on a classification of cycles of the al- gorithm and on two theorems. Two types of procedural

restrictions are imposed as a basis for proving finite- ness: (a) selection of the incoming variable is subjected

to regulation (beyond that required by the simplex and the rules applied are a function of the type of cycle being executed; (b) selection of the row used as the source of the data for the Gomory cut is restricted (in addition to the restriction implied by (ii), (iii), and (iv) above) in certain cycles of the algorithm. 38 p. (Paper 69B3-154, p. 213). 75
October-December 1965 Table of Dedekind sums, R. D. Shipp The Dedekind sums are of importance in the transformation formulae for the Dedekind modular form rj{r), and in discussing the characters of degree 1 of the modular group and its subgroups. These sums are rational numbers and

a table of their exact values is given. In addition a comprehensive bibliography on these sums is included. Key Words: Dedekind sums, tables, characters, modular

form. 4 p. (Paper 69B4-155, p. 259). Lattice points in a sphere, M. Bleicher and M. I. Knopp

Let R

3 (x) be the remainder in the classical lattice point problem for a 3-sphere of radius y[x~ and center (0, 0, 0). We prove that as x-> + oo, R,(*)= 0(x3/4 log x) and R

3 (x) = fi(x 1/2 log log x). Key Words: Additive analytic number theory, lattice points, remainder formulas. 6 p. (Paper 69B4-156, p. 265).

Error analysis of phase-integral methods. I. General

theory for simple turning points, F. W. J. Olver An approximate general solution of the differential equation d

2 w/dz 2 = f{z)w

w = A/- 1/4 exp (ff

1/2 dz) + Bf~ 1/4 exp (-ff

1/2 dz). To represent a particular solution throughout a given complex domain, differing pairs of values of the arbitrary constants A and B are generally needed in various sub- domains. Strict error bounds are established in this paper for the coefficients in the linear equations con- necting the pairs of values of A and B, in the case in which the z-domain under consideration is unbounded and

contains a simple zero and no singularities of f(z). The results are used to place the "WKBF" method on

a firm mathematical foundation. Key Words: Differential equations, asymptotics, phaseintegral, WKBJ method, turning point, con- nection formulas, error bounds. 20 p. (Paper 69B4-157, p. 271). Error analysis of phase-integral methods. II. Application to wave-penetration problems, F. W. J. Olver A study is made of the differential equation d

2 w/dz 2 = \f{z) + h{z)\w,

in which f{z) and h(z) are real and regular on the real

axis, and f(z) has exactly two zeros there. Strict error bounds are derived for the coefficients in the formulas which connect the asymptotic solutions at z = —oo with

the asymptotic solutions at z = —oo. Applications are made to two physical problems. Key Words: Wave penetration, connection formulas, error bounds, potential barrier, transmission coefficient, harmonic oscillator. 10 p. (Paper

69B4-158, p. 291). A random walk model of chain polymer adsorption at a

surface. II. Effect of correlation between neighboring

steps, R. J. Rubin A random walk lattice model of adsorption of an iso- lated polymer chain at a solution surface is investigated. The model is a modification of a simple cubic lattice in which there is a correlation between successive steps. The direction of each step is at right angles to the direc- tion of the preceding step (all bond angles are 90°). Onedimensional characteristics of the monomer unit distribu- tion are determined analytically in the limit of long polymer chains neglecting the self-excluded volume. The mean number of monomer units adsorbed in the sur- face layer v(6, N) is determined assuming that one end

of the polymer chain lies in the surface layer, where N

is the mean number of monomer units in the chain and Q

is the adsorption energy of each monomer unit in the sur- face layer measured in units of kT. In addition, the mean distance of the free end of the chain from the sur- face layer z(6, N) is determined. The properties of this correlated step model are qualitatively similar to the properties which have been found in uncorrelated step models. In particular, there is a critical value of the adsorption energy 6> c such that for Q > 6 c

, v{6, N) is proportional to /V. Numerical values of N~ 1 v(d, N) and

z(<9, N) are presented for 6 > d

c = In (yT- 1). Key Words: Chain polymer, adsorption, random walk, lat- tice model, short range correlation, critical energy, partition function, generating function. 19 p. (Paper 69B4- 159, p. 301). Groups of unimodular circulants, R. H. Austing A method to determine a basis of the group of rational

integral symmetric positive definite unimodular nxn cir- culants for any n, is presented. This method uses the correspondence between unimodular circulants and units

of the algebraic number field R{£), where (is a primitive nth root of unity. Known results are used to obtain generators of certain aperiodic subgroups of the abelian,

finitely generated group of units in R(C). The corre- spondence, then, produces the desired basis elements. The number of basis elements for each n is proved to be

J^j + 1 - <7 0 ("). where o

Q {n) is the number of positive

divisors of n. In addition, an upper bound for the number

of congruence classes of these circulants is obtained, where congruence is relative to rational symmetric uni- modular nxn circulants. 76
Key Words: Algebraic numbers, circulanc matrices, abelian groups. 6 p. (Paper 69B4-160,

P- 313). A generalization of a result of Newman on multipliers of difference sets, R. L. McFarland A theorem of M. Newman states that if v, k, A, are the parameters for a difference set D, and k — A = p or 2p (p a prime) then p is a multiplier of D. This theorem is generalized to the case of an abelian difference set and several consequences are noted. Key Words: Abelian, multipliers, block designs, differ- ence sets. 4 p. (Paper 69B4-161, p. 319). The bridge tournament problem and calibration designs

for comparing pairs of objects, R. C. Bose and J. M.

The classical tournament problem calls for arranging v individuals into teams of p players so that a player is teamed the same number of times with each of the other players and also that each player is pitted equally often against each of the other players. The play of the tournament results in the determination of difference in performance of the various pairings of the groups. In the special case when p = 2 each team consists of two

players and the designs are called bridge tournament

designs.

In high precision calibration one can measure only the difference between two nominally equal groups so that if v objects are to be intercompared in groups of p objects, then the solutions to the tournament problem provide schedules for the grouping. These designs are useful in weighing and any other measurements where the objects

to be measured can be combined into groups without loss

of precision or accuracy in the comparisons. This paper presents general methods for constructing

of bridge tournament designs, i.e., for the case when

p = 2, for all v - 50. Key Words: Calibration, calibration designs, combinatorial analysis, difference sets, experiment

designs, incomplete block designs, tourna- ments, weighing designs. 10 p. (Paper 69B4-162, p. 323). The condition of certain matrices, L. F. Shampine By reversing the usual direction of application, a com- mon procedure for solving integral equations numerically

is used to obtain the asymptotic P-condition numbers of two well-known test matrices. Key Words: Asymptotic P-condition, integral equations,

test matrices. 2 p. (Paper 69B4-163, p. 333) Some number-theoretic calculations, K. F. Kloss An account is given of several number- theoretic computations carried out by the author, some with ranges many times those of any previous published work. The

calculations pertain to (1) long sequences of consecutive composite numbers, (2) Fermat quotients, (3) Wilson quotients, (4) generalized Wilson quotients, (5) Pell's equation, (6) the partition function, (7) a conjecture of Feit and Thompson, and (8) unique factorization quadratic

Key words: Numbers, theory of, primes. 2 p. (Paper

69B4-164, p. 335).

TITLE PAGE AND CONTENTS TO VOL. 69. 3 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

B. MATHEMATICS AND MATHEMATICAL PHYSICS, VOLUME 70 JANUARY-JUNE 1966

January-March 1966 Invariant properties of the spheroidal potential of an

oblate planet, J. P. Vinti The author's gravitational potential for an oblate

planet, expressible in terms of oblate spheroidal coordi- nates, can be generalized by means of a metric-preserving

transformation of the associated Cartesian system. This

preserves separability of the problem of orbital motion when the potential coefficients J 2 l and J 3 are taken

into account. The inclusion of J 2

' i is not of practical importance, but has a clear physical interpretation. The

inclusion of / , however, is of considerable practical importance, permitting a more accurate treatment than

that given by perturbation theory. On the other hand, its physical significance is less clear, since including J 3 depends on translating the origin of spheroidal coordi- nates by a distance 8 = V2 ]~ 1

| J

fi

| equatorial radii. This distance, amounting to 7 km in the case of the

earth, is much greater than any change in the geoid pro- duced by J 3

. It is clearly related to the long-periodic terms of perturbation theory and turns out to be equal to the displacement by J 3 of the plane of symmetry of those

exactly elliptical polar orbits which are possible solu- tions with the spheroidal model. Key Words: Invariant properties, spheroidal potential, oblate planet metric-preserving transformation. 16 p. (Paper 70B 1-165, p. 1). Inclusion of the third zonal harmonic in an accurate ref- erence orbit of an artificial satellite, J. P. Vinti The previous paper gave the general theory and physical principles involved in so modifying the author's spheroidal potential for an oblate planet as to permit exact inclusion of the effects of the third zonal harmonic

of the planet's gravitational field. The present paper

carries out the computational details necessary to derive

the resulting orbit, which now corresponds to a potential

fitted exactly through the third zonal harmonic and to about two-thirds of the fourth. The accuracy of the orbit itself, as a solution for the given potential, depends on the accuracy of solution of a

certain cubic equation. The paper works out this solution through terms of the third order in J 2

, the coefficient

of the second zonal harmonic, but its accuracy, and thus 77
that of the secular terms, may be increased at will. Periodic terms are carried through the second order, but

their accuracy may also be increased. An obvious advantage of accounting for / in this way

is the absence of small denominators in e or sin / that occur in a perturbation theory. Another is the resulting increase in accuracy, through terms in J

2

, of the long, periodic third harmonic terms. Key Words: Third zonal harmonic, increased accuracy,

spheroidal reference orbit, artificial satellite. 30 p. (Paper 70B 1-166, p. ] 7). On EPr and normal EPr matrices, I. Jack Katz and M. H. Pearl

(1) EPr matrices A (that is, matrices A for which A

and A* have the same null space) are investigated. It is shown that if A is a complex EPr

l matrix and 6 a complex EPr

2 matrix, and AB = BA, then AB is EPr. Other theorems about products of EPr matrices are established.

(2) Let A be a normal EPr matrix over an arbitrary

field. A necessary and sufficient condition, involving

the solvability (for X) of a matrix equation XBX* + AX + X*A* + C = 0, is found for the existence of a matrix N

such that (i) NN* = / and (ii) A* = NA = AN. Explicit solutions are given for two important classes of normal EPr matrices, namely (1) those satisfying the condition rank A = rank A A* , and (2) those of rank n/2, satisfying AA* = 0, over a field of characteristic ^ 2. An example

is given to show that no such N need exist for characteristic = 2. (3) EP linear transformations on a finite-dimensional vector space are introduced, and the relation between

them and EPr matrices is studied. It is shown that a

linear transformation T of a complex vector space is EP

if and only if rank T = rank T

2

. Key Words: Matrix, normal, linear algebra. 30 p. (Paper 70B 1-167, p. 47). The Bernstein form of a polynomial, G. T. Cargo and O.

Shisha, 3 p. (Paper 70B 1-168, p. 79). Remarks on measurable sets and functions, R. O. Davies

A. J. Goldman (On measurable sets and functions, J. Res. NBS 69B (Math, and Math, Phys.) Nos. 1 and 2, 99-100 (1965)) conjectured that the Borel sets are char- acterized by their property of having measurable inverse images under all Legesgue measurable functions: here

it is pointed out that the existence of analytic non-Borel

sets refutes this and a related conjecture. Also an error

in Goldman's Theorem 2 is corrected. Key Words: Measure, integration, real function. 2 p. (Paper 70B 1-169, p. 83). The form factor of the Fermi model spatial distribution,

L. C. Maximon and R. A. Schrack A useful analytic expression for the form factor F(q) = /

p(r)e' q " Td

3

r of the Fermi distribution p(r) = pQ [l =

e (r-c)/aj-i

j s deri ve d. This expression consists of a simple term with elementary functions plus a rapidly con- vergent infinite series with terms of alternating sign.

Tables of the form factor as a function of q for several values of the parameters c and a, as well as the numerical values of the normalization constant pQ and the rms

radius corresponding to these values of the parameters, Key Words: Analytic, fermi distribution, form factor, momentum transfer, normalization constant, root-mean-square radius. 10 p. (Paper 70B 1-170, p. 85). Tables for the evaluation of the Faxen approximation to the solution of the Lamm equation, M. Dishon and G.

h. Weiss A table is presented to facilitate the calculation of

the Faxen approximation to the concentration and concentration gradient. The table is accurate to within one

figure in the last place, and can be used both for no sed- imentation dependence on concentration and for the de- pendence 5 = 5^1 - kc). Key Words: Faxe'n approximation, Lamm equation, ultra- centrifuge, theory of noise, theory of ion ex- change columns. 23 p. (Paper 70BT171, p. 95).

April-June 1966 On a sequence of points of interest for numerical quadrature, S. Haber The distribution of 2 sequences of points, originally discussed by van derCorput and by K. F. Roth, is studied

in detail. The results obtained disprove a conjecture

of J. H. Halton and suggest a conjecture on the improve- ment of a theorem of Roth. 10 p. (Paper 70B2-172,

p. 127). Key Words: Uniform distribution, equidistribution, dis- tribution functions, diophantine approximation, quadrature, Monte Carlo methods, multiple quadrature, integration, numerical

analysis, distribution of points. On abstract numerical integrations, J.J. Sopka

Let X be a space of functions, say X C C(K), K locally compact Hausdorff, let kX* be an integral on A' and

let AT C X* be a given subspace of "simple" functionals, then it is desired to obtain an leM* for given n, UM* C

M*; M* being a suitable n dimensional subspace deter- mined so that / if l—T annihilates a given finite dimensional subspace X, C X. In this general context, the abstract analysis of numerical integration is developed and

certain specific applications are made. Key Words: Numerical integrations, Hausdorff space,

parabolic rule, Gaussian quadrature methods.

3 p. (Paper 70B2-173, p. 137). Treatment of outliers in samples of size three, F. J. Anscombe and B. A. Barron A reading that is a long way from most of the others

in a series of replicate determinations is called an out- 78
lier. A particular procedure for rejecting outliers, and

also a particular procedure for modifying outliers, are considered for samples of size three, supposed drawn

from a common normal population except that one of the three readings may have an added bias. Numerical re- sults are given illustrating the effects of the procedures

on estimation of the location parameter. The calculations support a tentative general conclusion that estimation by least squares should usually be tempered by suc- cessive application of both a rejection rule and a modification rule. Key Words: Statistics, outliers, residuals, estimation, robustness, least squares. 7 p. (Paper

70B2-174, p. 141). A note on contaminated samples of size three, T. A. Willke Estimation of the mean and standard deviation using

the closest two of three observations in a sample from a normal population with contamination by slippage of the mean is investigated by a sampling study. Lieblein's

results, which indicated that the use of these statistics

is not advisable for noncontaminated samples, are borne

out by this study for contaminated samples as well. Key Words: Outliers, contaminated samples, robust esti- mates, best two of three. 3 p. (Paper 70B2-

175, p. 149). Realizing the distance matrix of a graph, A. J. Goldman An explicit description is given for the unique graph

with as few arcs (each bearing a positive length) as possible, which has a prescribed matrix of shortest-path distances between pairs of distinct vertices. The same

is done in the case when the zth diagonal matrix entry, instead of being zero, represents the length of a shortest closed path containing the zth vertex. Key Words: Graph, distance matrix, shortest path. 2 p. (Paper 70B2-176, p. 153).

Pairs of nonsingular matrices, K. Goldberg

Let R, and R2 be m by n matrices of rank m. Let Sl and S2 be ?i-m by n matrices of rank n-m such thzt R l Sj = R2 52T

= 0. Then RX R2T

is nonsingular if and only if S,S[

is nonsingular, in which case R2 (R 1 R2 )~ 1 R, +

iS2r

(S 1 S2rr

1 .S

1

! r

equals the identity matrix of order n. Key Words: Matrices (pairs of nonsingular). 2 p. (Paper 70B2-177, p. 155. Upper bounds for the determinant of a row stochastic

matrix, K. Goldberg

If A = (a

(J

) is a row stochastic matrix of order n then

|det A| <(l-~2f=l minia..)"' 1

. If Q is a 1 by n real vector such that every element of czA is nonnegative then

|det A| < s(a )/\g(a)\, where s(a ) is the sum of th« ele- ments of a and g(a) is the element of a of greatest absolute value. The conditions for equality are determined

in both cases. Key Words: Determinants, matrices (row stochastic), upper bounds. 2 p. (Paper 70B2-178, p. 157).

Groups preserving ordering in vectors, K. Goldberg The group of all nonsingular matrices taking the set

of ordered 1 by n real vectors onto itself is determined.

It is shown to be homomorphic to the symmetric group on n— 1 letters. A similar result is found for the subset of nonnegative vectors; its group is homomorphic to the symmetric group on n letters. Key Words: Vectors (ordered, nonnegative), matrices

(groups of). 2 p. (Paper 70B2-179, p. 159).

79
3.3. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION C. ENGINEERING AND INSTRUMENTATION, VOLUME 64C, JULY-DECEMBER I960

July-September 1960 A new method of measuring gage blocks, J. B. Saunders

Since the publication of a description of the parallel testing interferometer it has been discovered that this instrument, without modification, is quite applicable to the comparison of lengths of gage blocks. This note describes the testing of gage blocks of all lengths, up

to several meters, without having to contact them to optical

flats. 1 p. (Paper 64C3-37, p. 173). Gage blocks of superior stability: Initial developments

in materials and measurement, M. R. Meyerson, T. R. Young, and W. R. Ney

Increased demands on modern technology have estab- lished a requirement for gage blocks with higher accuracy

of length calibration than is currently available. The de- sired improvements is tenfold and involves an increase

in reliability from 2xl0~6 in. /in. to 1 or 2xl0~7 in. /in. The problem of achieving gage blocks dimensionally

stable to this degree is fundamental and has two as- pects; (1) the development of a suitable material and

treatment to produce a gage block with the desired di- mensional stability, surface quality, and several other physical properties, (2) the development of instrumentation and techniques for the precise measurement of temporal changes of length, so that stability of test samples may be determined to the required precision. To date the program has been successful in developing

three sets of gage blocks from two materials that have met the requirements and have shown a dimensional stability of 2xl0~7 in./in./yr over an observed period of one

year. A technique for measurement based on the use of a mechanical-electronic comparator and a rigorous application of statistical control have supplied data precise to within ±2xl0 -7

in. The processes, technical aspects, and techniques involved in these developments are fully explained, and plans for further investigation and im- provement are indicated. 33 p. (Paper 64C3-38, p. 175). Variation of resolving power and type of test pattern,

F. E. Washer and V. P. Tayman

The plane of best average definition is located for a number of lenses of a type used in airplane mapping

cameras. Three different types of test pattern are used

for each lens. These patterns are the long-line, shortline, and annulus. Results of measurement that show the

variation of resolving power throughout the region of usable imagery are given for each type of test pattern with two types of photographic emulsion. It is found that the plane of best average definition can be located equally

well with each type of pattern. There are, however, pro- nounced differences in the numerical magnitudes of the values of resolving power determined with the various types of test pattern. In general, the highest values are attained with the long-line patterns. Values of the various

rating indices yjRpTp, AWAR, and ADWAR are given

together with a comparison of the different order of merit assigned by these indices. 15 p. (Paper 64C3-39, p. 209). A multiple isolated-input network with common output,

C. M. Allred and C. C. Cook A circuit is described having n inputs which are iso- lated from each other but fed into a common output. Theoretically, the circuit presents matched impedances

at each of the inputs and the output and has minimum

transmission loss. Design equations are presented for the general case and performance data is given for a two-input and a three-input unit. 4 p. (Paper 64C3-40

P- 225). Phase angle master standard for 400 cycles per second,

J. H. Park and H. N. Cones A continuously variable, 0- to 180-degree, phase shift standard for 400 cycles per second is described in detail. It consists of a ^-section line made up of twelve

14.6 degree and three 4.3 degree sections to provide for two sizes of coarse steps and an RC circuit at the input

to the line to provide for fine steps and a continuous fine

control. A method for accurately adjusting the characteristic impedance of all 77-sections to the same value, which

is used as the termination, was devised. Under these conditions it is shown that the phase shift introduced by each 77-section can be accurately computed from a measured value of inductance. The phase shift of each 77- section was also determined by an experimental procedure dependent upon a 180-degree phase shift introduced by a

toroidal transformer. The values obtained by these two independent methods agree to within 0.01 degree. 12 p. (Paper 64C3-41, p. 229). Disturbances due to the motion of a cylinder in a twolayer liquid system, L. H. Carpenter and G. H. Keulegan The disturbance created at the interface of a two-layer

liquid system by the horizontal motion of a cylinder in the upper layer is studied for various sizes and .'napes

of cylinders, depths of the liquids, cylinder velocities, and density ratios. The disturbances fall into three cate- gories. First, when the layers are of equal thickness, in most cases a train of progressive oscillatory waves is produced at the interface. Second, when the depth of the denser layer is much less than the depth of the fresh- water layer, the profile of the interface usually resembles

that corresponding to positive internal solitary waves.

Third, when the depth of the denser layer is much greater than the depth of the fresh-water layer, in most cases

an internal hydraulic jump is produced. The characteristics of the disturbances in each category are related

to the size of the cylinder, the depths of the liquids, the cylinder velocity, the density ratio, and the total distance of travel of the cylinder. A theoretical analysis

is given for disturbances of the first category. 13 p. (Paper 64C3-42, p. 241).

October-December 19 r>0 Error analysis of a standard microwave phase shifter, G. E. Schaferand R. W. Beatty A standard microwave phase shifter has been proposed which utilizes an adjustable short circuit attached to a 80
tunable three-arm waveguide junction. Ideally, the change

of phase of the emergent wave from the third port can be made to equal the change of phase of the equivalent load attached to the second port, whether the generator and

detector are matched or not. The difference between the change of phase of the emergent wave from port 3 and

the change of phase of the equivalent load attached to arm 2 because of imperfect tuning is termed tuning error. This analysis relates the tuning error to amplitude changes

which are observed at the detector attached to arm 3 dur- ing the tuning procedure. Graphs are presented for deter- mining the parameters needed to estimate limits of tuning

error from the observations of amplitude changes during

the tuning procedure. One calculates the change in phase of the reflection coefficient produced by the short circuit from its ob- served displacement and from the guide wavelength. This

procedure results in errors called dimensional errors because of uncertainties in determining the axial motion

of the short circuit and because of slight variations from

the nominal broad dimension of the waveguide. Limits of these dimensional errors are calculated for WR-90 waveguide in the recommended frequency range of 8.2 to 12.4 kilomegacycles per second, and presented in graphical

form. 5 p. (Paper 64C4-43, p. 261). A method of controlling the effect of resistance in the

link circuit of the Thomson or Kelvin double bridge, D. Ramaley

Circuitry of the double bridge is reviewed to emphasize the significance of the link circuit as a part of the bridge network. A simple analysis demonstrates the need

of some equivalent or substitute for low link circuit re- sistance in situations where adequately low link circuit resistance cannot be achieved physically. An appropriate method of controlling the potential difference in the

link circuit is shown to accomplish the same effect as

an actual reduction of resistance in the link circuit. The simple circuit modifications required to utilize this method are explained. A step-by-step procedure is out- lined for making measurements with bridges incorporating these modifications, and some typical examples are dis- cussed illustrating the advantages realized. 4 p. (Paper 64C4-44, p. 267).

Automatic precise recording of temperature, G. S. Ross

and H. D. Dixon An apparatus is described which automatically and

continuously records small temperature changes. The

principal components are a platinum resistance ther- mometer, a modified G-2 Mueller Wheatstone bridge, a

direct current amplifier, and a potentiometric, strip-chart recorder. Frequent zero checking is unnecessary because

the system is extremely stable. In systems where the general dependence of temperature on time is known, a nearly uniform change of 0.00001 °C per minute is easily

discernible over a recording period of 10 minutes or more. However, the measurement of temperature at any given

instant is limited by an inherent electronic noise band

of 0.00004 °C. A similar arrangement, using a thermo- couple pair and a potentiometer instead of the platinum thermometer and the Wheatstone bridge, is also described.

5 p. (Paper 64C4-45, p. 271).

Gimbal device to minimize the effects of off-center loading on balance pans, H. A. Bowman and L. B. Macurdy

Failure to center loads on laboratory-balance pans re- sults in swinging and vibration of the suspension upon

release, both of which contribute to weighing error. As

part of a study of balance design in relation to sources

of uncertainty, a device has been contrived which, when

installed in the suspension, locks the suspension in a gravitationally alined configuration after loading but prior

to beam release. Data is presented showing significant reduction of the effects of off -centering after the device has been operated. 3 p. (Paper 64C4-46, p. 277). Response of microchemical balances to changes in rela- tive humidity, H. E. Aimer The effects of relative humidity were investigated on

four microchemical balances (two equal-arm two-pan and two one-pan direct reading). Tests were begun by reading the balance indications

at low relative humidities; humidified air was then intro- duced into the balance case and balance indication and

hygrometer readings were taken as the moist air was

gradually replaced by drier room air. Individual balance

parts which were suspected of mass changes with rela- tive humidity were separately weighed at controlled humidities by a balance operated in uniform, rather dry room air. The balances all responded rapidly to changes in humidity and quickly reached new equilibria. All but one of the four balances—a one-pan balance—responded

systematically. Largest changes in balance indication with humidity were found to be caused by hygroscopic

matetials used in construction. Foreign hygroscopic material on live parts of balances would be equally damaging.The effects are not predictable even after balances

of a given design have been studied, so in practice each

balance should be tested. If changes with humidity are

not negligible, hygroscopic materials must be removed

as far as practicable. With a good balance, a small variation in humidity may be disregarded. 5 p. (Paper 64C4-47,

p. 281). Chemical changes occurring during the weathering of two

coating-grade asphalts, S. H. Greenfeld The chemical changes that occurred during the weathering of two coating-grade asphalts in accelerated weathering machines and outdoors were studied. Asphaltenes and water-soluble and volatile degradation products were produced from the oils in the asphalt. The increase in asphaltenes during exposure is attributable to the formation of oxygenated groups in the oil components rather than to polymerization of the oils. Some of the sulfur and nitrogen compounds originally in the oil fractions underwent chemical changes that made them insoluble

in n-pentane. The asphalts lost weight during the exposure. Roughly

two-thirds of the material lost, including sulfur- and

nitrogen-containing molecules, became water-soluble degradation products. The other third became volatile degradation products, probably C02 and H20. An inter- mediate degradation product was separated with the asphaltenes. This material could be extracted from the asphaltene fraction with ethanol.

1
The reported observations were made on asphalts ex- posed in accelerated weathering machines. Outdoor ex- posures of the same asphalts were of too short duration

to produce sginificant trends, but the general results were in agreement with the accelerated exposures. 12 p. (Paper 64C4-48, p. 287).

Characteristics of fifteen coating-grade asphalts, S. H. Greenfeld A survey of asphalts used in coatings on asphalt pre- pared roofing was made and their characteristics measured. Despite the fact that all of the asphalts were

similar in the characteristics by which they are normally

specified, they varied over a sixfold range in durability

in accelerated weathering machines. They were also

different in component and chemical analyses. While no

quantitative relation was found between durability and any of the measured characteristics, it was found that the more durable and less durable asphalts could be

identified with certain ranges of flash point, specific

gravity, percent carbon plus hydrogen, percent sulfur, percent asphaltenes, and percent resins. 7 p. (Paper 64C4-49, p. 299).

TITLE PAGE AND CONTENTS TO VOL. 64C. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION C. ENGI- NEERING AND INSTRUMENTATION, VOLUME 65C, JAN- UARY-DECEMBER 1961

January-March 1961 Electronic scanning microscope for a spectrographs

plate comparator, M. L. Kuder A scanning microdensitometer has been constructed

for the purpose of analyzing spectrographs plates. The

instrument facilities reading the data and increases the speed and accuracy over other methods. A small section of the plate is scanned at one time and converted to a magnified X-Y plot of density versus wavelength displayed on the screen of a cathode ray oscilloscope. The display includes an electronically produced fiducial line which is used as a reference

point for measurements of line position. An alternate type of display may be used which includes the superposition of the mirror image trace on the original trace. This is preferred in some cases for setting on unsymmetrical lines. Resolution to better than 0.001 millimeter on the plate is consistently obtained, and the fiducial line remains stable to this precision for several hours. Provision is made for observing up to five adjacent spectro- grams on a single plate. 7 p. (Paper 65C1-50, p. 1). Viscoelastometer for measurement of flow and elastic recovery, R. J. Overberg and H. Leaderman An account is given of the design, performance, and method of operation of a concentric cylinder rotational viscoelastometer. The instrument is designed for measurement of flow and time-dependent elastic recovery of viscous elastic liquids for temperatures at which the viscosity lies in the range of 106 to 10' 2 poises and the

elastic recovery is to be studied over a range of time from 1 second to 1 day. It is also suitable for measure- ment of non-Newtonian flow when the apparent viscosity

is not much less than the Newtonian viscosity. The

stator is a 1.5 inch precision-bore glass tube, which

permits visual observation of the sample. Interchangeable rotors (radius ratios 0.21, 0.58, 0.92) are provided,

the smallest for materials which are only slightly non- Newtonian and have a small compliance. Torque is ap- plied by weights through a torque drum. Mirrors on the

rotor shaft and a photoelectric recorder permit continuous

recording of the rotor position. Mercury slip rings permit monitoring of rotor temperature. The maximum torque is 5xl07 dyne-cm, while the torque due to static friction

is 2.5 xlO4 dyne-cm. The maximum surface shear stress

is 6.5 x 106 dyne-cm-2

. Temperatures from -70 to + 160 °C

have been realized. "End-effect" studies have been

made. Instrument compliance, temperature gradient correction, and the effect of inertia and friction on elastic recovery measurements are discussed. Data reduction methods for nonlinear behavior are developed. 13 p. (Paper 65C1-51, p. 9). An ultra low frequency bridge for dielectric measurements, D. J. Scheiber The bridge described is capable of measuring the parallel capacitance and resistance of dielectric speci- mens in the frequency range of 0.008 to 200 cps. It employs no earthing device and is directly connected to a three terminal oscillator. The substitution method is employed. The capabilities of the bridge are experi- mentally tested by measurements upon known capacitors and resistors and by comparison with results obtained

using a Schering bridge near 100 cps. The apparatus is capable of accuracies previously unattained at these low frequencies. Capacitances between zero and 100 pf may be measured to an accuracy of ±(0.05% + 0.002 pf) at frequencies above 5 cps. Below 5 cps the accuracy becomes ± [0.05% + (0. 002 + 2 xl05//R D )pf], where /is the frequency in cps and Rjr> is the equivalent resistance in ohms across the detector terminals. Conductances be- tween 10_v and 10~15 mhos may be measured to an ac- curacy of about ±(1%+ 3/x 10~ 15 mhos) when />0.1 cps. When /<0.1 cps the accuracy is about ±(l% + 2xl0~16 mhos). The dielectric constant (e ') of a specimen may be determined to an accuracy proportional to that of capacitance measurements. The loss index (t ") may be determined to an accuracy of about ±(1% + 5 x 10~"7C„) when />0.1 cps and ±(1%+ 3x 10~"7/C„) when /<0.1 cps. Here C v is the vacuum capacitance of the specimen ex- pressed in picofarads. The effects of stray impedances

shunting the bridge ratio arms, are investigated. Useful

modifications of the bridge are discussed. 20 p. (Paper 65C1-52, p. 23). The Ephi system for VLF direction finding, G. Hefley,

R. F. Linfield, and T. L. Davis A new system of VLF direction finding has been de- veloped and tested by the National Bureau of Standards, Boulder, Colorado. The system has been named "Ephi"

(E-<f>) because the bearing of the transient signal is de- termined from the relative phase (<£) of the vertical electrical field (E) received at spaced antennas. The

advantage of this scheme compared to conventional 82
crossed-loop techniques is that it minimizes siting and

polarization errors. A minimum of three antennas must

be used to resolve directional ambiguity, and the preferred antenna location is at the vertices of an equilateral triangle with baselines equal to % to

l/l0 wavelength

(at 10 kc). Appropriate phase detectors, delay lines and coincidence circuits are used to obtain directional code in preset sectors. Within practical instrumentation

limits any number of sectors of variable widths can be

operated simultaneously and each can be rotated in azimuth: 7 p. (Paper 65C1-53, p. 43). Fast counting of alpha particles in air ionization chambers, Z. Bay, F. D. McLernon, and P. A. Newman

It was assumed in the past that counting of alpha

particles in air-ionization chambers could only be based on the collection of ions since electrons produced

in the alpha track quickly form negative ions in electro- negative gases. This leads to time resolutions of the order of a millisecond. It is shown in the present work

that the motion of the electrons before attachment pro- duces a sharp initial rise in the pulse profile which,

although small, can be detected and utilized for high speed counting. Time resolutions of the order of a few microseconds with good signal-to-noise ratios are real- ized in atmospheric air, and therefore counting speeds

similar to those in non-electronegative gases are obtained. 5 p. (Paper 65C1-54, p. 51). X-ray diffraction measurement of intragranular misorientation in alpha brass subjected to reversed plastic

strain, C. J. Newton and H. C. Vacher A monochromatic misorientation goniometer was built and used to examine the character of X-ray diffraction spots from 70 percent copper, 30 percent zinc alpha

(cartridge) brass specimens subjected to unidirectional and reversed plastic deformation. A two-exposure, moving and stationary film technique was employed. Numerical measurements of the average subgranular

misorientation, amounting to several hundredths of a degree, were obtained at different stages in one complete cycle of 1 percent plastic strain amplitude. About

60 percent of the misorientation was recovered when the

plastic strain was reversed, leaving a residual misorientation at zero net strain that increased linearly with the cumulative strain. 7 p. (Paper 65C1-55, p. 57).

Enthalpy and specific heat of nine corrosion-resistant

alloys at high temperatures, T. B. Douglas and

A. C. Victor

Specific heats from 0 to 900 °C that are believed to be accurate in general to within ±0.3 percent are reported

for two alloys: 90 Ni-10 Cr and stainless steel, type

316. These values were calculated from enthalpies measured with a drop method and a precision Bunsen

ice calorimeter. For reference and comparison, high temperature specific heats of seven other base-metal

alloys, determined similarly at the Bureau and previ- ously published, also are tabulated. These seven alloys

are 80 Ni-20 Cr, 76 Ni-15 Cr-9 Fe (three slightly dif- ferent samples), stainless steel, types 347 and 446, and Monel (67% Ni, 30% Cu). 5 p. (Paper 65C1-56, p. 57).

Determination of minor constituents in low-alloy steels by X-ray spectroscopy, R. E. Michaelis, R. Alvarez, and B. A. Kilday The analysis of low-alloy steel by X-ray spectroscopy has been investigated for the determination of minor

constituents. In this study, detection limits and inter- ferences were examined for the following 20 elements:

Ag, As, Co, Cr, Cu, Ge, Mn, Mo, Nb, Ni, Pb, S, Se, Si, Sn, Ta, Ti, V, W, and Zr. For most of the elements,

the detection limit is below 0.01 percent which is suf- ficient for control analyses. Interferences or interele- ment effects in low-alloy steel were found not to be

serious, but may be encountered; for example, zirconium

interferes with the determination of molybdenum. The

application of the National Bureau of Standards standard samples to these determinations is discussed. 6 p. (Paper 65C1-57, p. 71).

April-June lQfSl An experimental study concerning the pressurization and stratification of liquid hydrogen, A. F. Schmidt,

J. R. Purcell, W. A. Wilson, and R. V. Smith A 625 gallon powder-insulated Dewar has been built and appropriately instrumented to provide information concerning pressurization gas consumption, ullage pressure, liquid level (ullage volume, indirectly), horizontal and vertical temperature surveys throughout the test

fluid, and lapsed time. Pressurization levels of 25, 75, 125, and 180 psig have been examined individually. Two

techniques—one based on the case of one-dimensional

heat flow in a semi-infinite solid and the other founded

on an electrical network analog of the thermal sys- tem—are given for making reasonable predictions con- cerning liquid-phase hydrogen temperature distribution

in well-insulated, rapidly-pressurized storage vessels. A thermal analysis is presented which indicates the mechanics of heat transmission and adsorption in the

fluid. 7 p. (Paper 65C2-58, p. 81).

Temperature dependence of elastic constants of some

cermet specimens, S. Spinner The temperature dependence of both Young's and shear modulus of four types of cermet specimens, known as "nickel-bonded titanium carbide," as well as Ni and TiC

have been determined by a dynamic resonance method. The Young's modulus temperature curves of the cer- mets are characterized by a linear decrease from room

temperature until about 700 to 1,000 °C. In this upper

temperature region, an inflection in the relation develops, accompanied by an increase in internal friction. Both

these effects are attributed to viscous grain boundary

slip.For shear modulus, only the linear portion of the modulus temperature relation was obtained. In this linear region, the relative decrease in shear modulus

for the cermet specimens is greater than the relative decrease in Young's modulus for the same type of speci- men. This means that Poisson's ratio rises with temperature for the cermets. 8 p. (Paper 65C2-59, p. 89). 83
Analog simulation of zone melting, H. L. Mason

An analog computer was used to simulate zone melting

in small-diameter tungsten rods of 0.2 to 1 centimeter. Heat balance equations take account of electron bombardment, heat capacity, radial conduction, axial conduction, and surface radiation. Diagrams are given for the chosen

spatial subdivision and for the computer mechanization.

Predicted temperature-time curves are shown for a rod

of 0.4-centimeter diameter with optimum power input of 650 watts. Unsatisfactory operation is predicted for zone

melting of a 1-centimeter rod. 3 p. (Paper 65C2-60,

p. 97).

Residual losses in a guard-ring micrometer-electrode

holder for solid-disk dielectric specimens, A. H. Scott and W. P. Harris A guard-ring micrometer-electrode holder especially designed for use in making dielectric measurements on

solid-disk specimens of low-loss materials has been

constructed. A method of determining the separation of the electrodes to ±1 micron, using ball reference gages,

is described. Residual losses in the guard-ring holder, and also in the bridge standard capacitor used in the Schering bridge employed for the measurements, caused

by losses in surface films on the electrodes and by

series resistance in the leads, were accurately measured. It is shown that at frequencies from 100 cycles

per second to 100 kilocycles per second these residual losses are not more than a few microradians. Using

corrections thus obtained, the holder-bridge combination can be used to measure the losses of low-loss materials with greater accuracy than heretofore. 12 p. (Paper 65C2-61, p. 101).

A bolometer mount efficiency measurement technique, G. F. Engen

In the measurement of microwave power by means of the bolometric technique, the efficiency of the bolometer mount must be measured and applied as a correction in order to meet many of the accuracy requirements of today's technology. An impedance technique of determining this efficiency was proposed over ten years ago, but has found but little used to date because of the rather severe performance

requirements imposed on the attendant instrumentation. This paper describes an improved method of implementing the technique which is based on the reflectometer concept. A particularly attractive feature of the new method is

its substantial independence of connector discontinuity which has been a particularly troublesome source of

error in coaxial systems. In further contrast with some

of the earlier proposals for implementing this im- pedance technique, the new method is readily applicable

to both matched and unmatched mounts and does not

require mathematical approximations (in the first order

theory). A comprehensive error analysis indicates that an

accuracy of 0.5 percent is possible in the existing state

of the art. 12 p. (Paper 65C2-62, p. 113).

Telescope for measurement of optic angle of mica,

S. Ruthberg The described instrument allows rapid measurement of the apparent optic angle to an accuracy of 5

' of arc for samples as large as 2 inches in diameter. This angle is a property pertinent to the quality of mica. Instrumentation is quite simple but dependent upon the complex phenomena of interference figures produced by biaxial

crystals in polarized light. Magnification is great, dis- persion can be determined, and the uniformity of samples

can be observed. 4 p. (Paper 65C2-63, p. 125). An automatic fringe counting interferometer for use

in the calibration of line scales, H. D. Cook and

L. A. Marzetta A reversible fringe counting interferometer is de- scribed in which mechanical, optical, and electronic adjustments are maintained stable by servomechanism

control or by balancing. Mirror parallelism is achieved

by detecting the angular error electronically and correct- ing by means of barium titanate actuators. An electronic

interpolator permits recording of the court in digital form

to 0.01 fringe without ambiguity. A rate of more than 1,200 fringes per second has been achieved over a range

of 14 centimeters. Higher counting rates are possible

over shorter ranges. Design factors and details are dis- cussed. A correction factor is derived for the error introduced by finite collimation of the interferometer beam. 12 p. (Paper 65C2-64, p. 129). July-September 1961 Prediction of symptoms of cavitation, R. B. Jacobs An analysis which indicates some of the basic prob- lems in cavitation and which may permit the prediction

of cavitation characteristics of hydraulic equipment is presented. Some experimental results are discussed and

are compared with the results of the analysis.

It is concluded that the analysis may be applicable to the prediction of symptoms of cavitation (changes in per- formance characteristics due to the presence of cavitation), but that more information related to metastability, nucleation, and vapor-phase dynamics is required. 10 p. (Paper 65C3-65, p. 147). Heating and cooling of air flowing through an under- ground tunnel, B. A. Peavy

Fresh or outside air needed for ventilating under- ground installations is introduced through shafts or tunnels. For a shaft or tunnel in continuous use, heat

is transferred from the air to the rock in summer and from

the rock to the air in the winter, thereby reducing the seasonal cooling and heating loads of the underground

installation. The possible benefit of this tempering

effect in reducing the size and operating cost of the air cooling and heating system of the installation cannot be

realized in the design stage without a reliable means of estimating the influence of the tunnel. In this paper, equations and functions for computing the tempering

effect are developed by mathematical analysis of the problem, assuming a sinusoidal variation of the outside

air temperature, and are shown to be in substantial ac- cordance with experimental results obtained in tests made in a small-scale model tunnel. 7 p. (Paper 65C3-66, p. 157). 84
Scress-corrosion cracking of the AZ31B magnesium alloy, H. L. Logan

Both the incubation period prior to stress-corrosion cracking and its initiation in the AZ31B magnesium alloy were studied using electrochemical solution potential- time and extension-time oscillographic curves obtained simultaneously. From these data it is postulated that the crystals most favorably oriented for slip were de- formed, on initial stressing of the specimen, to such an

extent that they were resistant to further extension and

the protective films on their surfaces, destroyed in the early deformation, were repaired. Subsequent extension

occurred as the result of stresses concentrated in rela- tively more resistant crystals with strain rates as high

as 1 percent/sec at limited sites rupturing the protective surface film. This exposed metal was anodic to very much larger areas on which the film had been repaired and cracks developed by electrochemical processes.

Stress-corrosion cracks were initiated on planes that made large angles with the basal crystallographic plane

of the magnesium alloy and in crystals of a polycrystalline aggregate that were unfavorably oriented for basal

slip. 5 p. (Paper 65C3-67, p. 165).

Coatings formed on steel by cathodic protection and

their evaluation by polatization measurements, W. J. Schwerdtfeget and R. J. Manuele

Three steel specimens were continuously exposed in the laboratory for almost 5 years in city water to which was added 3 percent by weight of sodium chloride. Two

of these specimens were under continuous cathodic pro- tection, one by current from a zinc anode, and the other by current from a rectifier through a carbon anode. The

third specimen was left to corrode freely. As a result of the cathodic protection, carbonates and

silicates fotmed protective coatings which eventually reduced the current density required for protection from about 5 to 0.02 ma/ft 2

. A coated specimen, after being

without protective current for 32 days (including 12 days

out of the salt water), required only 0.3 ma/ft 2 for initial protection The instantaneous corrosion rates on the coated speci- mens (scratched and unscratched) while without protective currents were measured by changes-in-slope (breaks)

in polarization curves. The currents at which breaks

occurred in the cathodic curves were found to be related

to AV/AJ values from the curves which values in turn bore a relation to the corrosion rates as measured by

weight loss. 9 p. (Paper 65C3-68, p. 171).

Calibration of inductance standards in the Maxwell-Wien

bridge circuit, T. L. Zapf

This paper discusses the errors from residuals in the Maxwell-Wien bridge and the effect of these on the measurement of inductors in a bridge not having a Wagner

ground. Particular attention is given to the use of substitution methods for accurate measurements and especially to the "equal-substitution" (comparison) method, which can yield excellent precision in the calibration of inductance standards. 6 p. (Paper 65C3-69, p. 183).

Calibration of loop antennas at VLF, A. G. Jean, H. E. Taggart, and J. R. Wait A technique and the equipment used for the precise determination of field strengrh of signals received from VLF transmitters is described. The equipment, which

is battery-operated, contains provisions for the reception

of VLF signals and the generation of standard fields to an accuracy of 5 percent. Both the receiving and trans- mitting antennas are loops. The field strength is deter- mined in terms of a quasi-static magnetic field with the two loop antennas positioned coaxially at a spacing of approximately two meters. Although the technique was

developed for use at VLF, it can be used at higher fre- quencies for calibrating loop antennas, generators, and

voltmeters, and for determining effective heights of antennas, or similar applications. 5 p. (Paper 65C3-70,

p. 189). Location of the plane of best average definition with low

contrast resolution patterns, F. E. Washer and

W. P. Tayman

The plane of best average definition is located for each

of several airplane-camera lenses using two types of low

contrast test pattern and two emulsions. A low contrast

pattern composed of dark lines on a light background and

the reverse pattern consisting of light lines on a dark background are used. The results of measurement indi- cate that the position of the plane of best focus and the \JR qT q value of the resolving power are not significantly affected by this reversal of contrast. In addition, the

results obtained using low contrast targets are compared

with those obtained with high contrast targets. Hence

the position of the selected focal plane remains invariant although the values of the measured resolving power are substantially higher for the high contrast targets. 8 p. (Paper 65C3-71, p. 195). Influence of temperature and relative humidity on the photographic response to Co60 gamma radiation, M. Ehrlich At relative humidities close to a hundred percent, bare

film packets are unsatisfactory for personnel dosimetry,

regardless of tempetature. Sealed polyethylene bags

afford considerable protection from excessive humidity.

3 p. (Paper 65C3-72, p. 203).

October-December 1961

A new airglow photometer, C. M. Purdy, L. R. Megill, and F. E. Roach

The study of night airflow phenomena requires the use

of various types of instruments, the type depending upon

the experimental environment and the results desired for final analysis. It has recently become apparent to the authors that there is a need for a very simple, yet rugged and reliable, photometer. The instrument which is de- scribed herein is intended to fill these needs. 4 p. (Paper 65C4-73, p. 213). 85
A guide to the use of the modified feflectometer tech- nique of VSWR measurement, W. J. Anson The theory of the modified reflectometer technique of measuring VSWR at microwave frequencies is discussed

briefly, the operational procedure is outlined, and se- lected results are given of an unpublished error analysis. Much of the theory and procedure has been published in isolated papers. This paper unifies those details essential to the use of this technique and includes procedural suggestions that have grown out of extensive experience

with the technique. The error analysis provides the means to evaluate the accuracy of any particular measure- ment made with, this system. 6 p. (Paper 65C4-74,

p. 217). An X-ray diffractometer cryostat providing temperature

control in the range 4 to 300 °K, F. A. Mauer and

L. H. Bolz The diffractometer cryostat described earlier has been

modified to provide a means for controlling temperature and for confining the vapor in equilibrium with volatile samples. Materials with vapor pressures as great as 1 atmosphere (atm) can be handled without loss of insulating vacuum, and temperatures can be controlled with an accuracy of ±0.1 °K in the range 4 to 20 °K decreasing

to ±1.0 °K at 300 °K. Data on the lattice constant and

thermal expansion of neon are given to demonstrate the

suitability of the apparatus for maintaining a desired temperature while working with a volatile material. 5 p. (Paper 65C4-75, p. 225). Apparatus for determination of pressure-density-temperature relations and specific heats of hydrogen to 350 atmospheres at temperatures above 14 °K, R. D.

Method and apparatus are designed for more rapid de- termination of accurate, closely-spaced, PVT and specific heat data than realized by previous procedures. A

sequence of pressure-temperature observations at nearly constant density is made by a modified Reichanstalt method. Temperatures of the essentially adiabatic piezo- meter are regulated by electric heating under control of the measuring thermometer. Instruments for measurement

and control are integrated with a high-pressure calori- meter for compressed liquid and fluid. Calorimetric experimentation is accelerated by use of an electronic

battery for the calorimetric heat supply and of a d-c power

regulator developed for automatic shield control. Details

are given of the PVT calibrations adjustment computations, and comparisons with independent data. 13 p. (Paper 65C4-76, p. 231). The use of a thermistor for detecting eluent fronts in liquid-solid chromatography, G. S. Ross The adsorption-desorption phenomenon which occurs when a multicomponent liquid is forced through a column

of solid adsorbent is accompanied by an evolution of heat. The resulting temperature change occurring within

the r -ilumn may be monitored and correlated with the compositional changes occurring in the liquid phase. The

construction and use of thermistor sensing cells is described. These cells are an integral part of the column, and they are maintained at appropriate temperatures by

either constant temperature, liquid-circulating baths or by

transistorized temperature controllers. Both methods of temperature control are described, and various applications of the cells are discussed. 3 p. (Paper 65C4-77,

p. 245). Radiation field from a circular disk source, J. H. Hubbell,

R. L. Bach, and R. J. Herbold A number of radiation shielding problems involve cal- culations of the response of an isotropic detector to radiation of arbitrary angular distribution from uniform

finite plane sources. Series expansion methods previously used for treating the rectangular source are here extended

to include the circular disk source with detector off-axis. These methods involve the family of integrals f s (cos

0 r/5/r!)P,(cos 6) and the integral f s (dS/r2

) exp (-pr) where 8 is obliquity with respect to the normal to the disk surface S, r is the distance from an element of source area, dS, to the detector, and p. is the attenuation

coefficient. Tabulations of the first type of integral

facilitate use of Legendre expansion representations of radiation directional distributions. The second integral, relates primarily to exponentially attenuated radiation, from a plane isotropic disk source, but the expansion

coefficient solution can be readily adapted to take into account a point isotropic buildup factor of the polynomial N

form £ Bi^fir) 1

. This adaptation applies equally well i=0

to the corresponding expansion coefficients previously given for the rectangular source. Formulas and numerical

results are presented. 16 p. (Paper 65C4-78, p. 249). The Bauschinger effect and residual microstresses in alpha brass, C. J. Newton The Bauschinger effect in alpha brass, specifically the lowering of the yield strength in the direction opposite to the preceding plastic deformation, was studied by an

examination of both tensile and compressive elastic

limits measured at the quarter-cycle stages throughout a complete cycle of uniaxial plastic strain of one percent

amplitude. X-ray measurements of axial residual directed microstresses indicated that the latter could be correlated with the decrease of the elastic limit measured in the di- rection opposite to the preceding deformation only at the

first quarter-cycle of deformation. After 3 quarter-cycles

the axial residual stress was always tensile regardless

of the direction of previous deformation; whereas the elastic limits continue to show strong directionality. 6 p. (Paper 65C4-79, p. 265). A study by polarization techniques of the corrosion rates

of^ aluminum and steel underground for sixteen months,

W. J. Schwerdtfeger One aluminum and one steel specimen were exposed

underground for 16 months in order to make a running survey of their corrosion rates as influenced by weather and time. Cathodic and anodic data were obtained periodically as

a basis for calculating rates of corrosion. Automatic

polarizing and recording equipment, housed indoors, was 86
used for making the measurements. The method is adaptable for field use in making corrosion rate or soil corrosivity studies where commercial power sources are not

available. 6 p. (Paper 65C4-80, p. 271). TITLE PAGE AND CONTENTS TO VOL. 65C. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION C. ENGINEERING AND INSTRUMENTATION, VOLUME 66C, JANUARY-DECEMBER 1962.

January-March 1962 Reference tables for 40 percent iridium-60 percent rhodium

versus iridium thermocouples, G. F. Blackburn and

F. R. Caldwell

In a program to establish reference tables for several

alloys of iridium and rhodium against iridium, the work

has been completed on 40 percent iridium-60 percent

rhodium. Tables have been prepared giving emfs for temperatures in degrees Fahrenheit from 32 °F to 3,800 °F and in degrees Celsius (centigrade) from 0 °C to 2,100 °C, and temperatures in these units with emf in millivolts as the argument. The emf is 11.6 millivolts at 3,800 °F. The thermoelectric power averages 3.1 microvolts per °F, and is within 0.1 microvolt of this value between 500 °F and

3,000 °F. It increases somewhat at temperatures above

3,000 °F. Measurements at temperatures 32 °F to 2,500 °F were made in a platinum-wound furnace of conventional design, using a Pt-10 percent Rh versus Pt thermocouple to measure temperature. From 1,950 °F to 3,800 °F (thus overlapping the upper end of the lower range), the furn- ace used was an iridium block heated by electric induction. Blackbody conditions prevailed in the cavity in which the test thermocouple was inserted, and enabled measurement of the temperature with an optical pyrometer. Good agreement between the data obtained in the over- lapping parts of the platinum and optical pyrometer ranges

(1,950 °F to 2,500 °F) established confidence in the temperature measurements with the optical pyrometer above 2,500 °F.

In both furnaces, helium surrounded the thermocouple

junctions. The gas was dried by passing it through a

trap immersed in liquid nitrogen. Thoria and beryllia were used as thermal and electrical insulation in the high temperature range. While the

electrical resistivity of these materials becomes rela- tively low at high temperatures, it did not become so low

as to cause appreciable error in emf measurements. More

serious was the introduction into the measuring circuit of

a spurious emf, associated with the strong rf field and

believed to be due to a rectifying property possessed by

the insulators at high temperature. It was present in vary- ing degrees, sometimes not at all. Its magnitude was de- termined by observing the (instantaneous) change in emf when the rf power was turned off, and the appropriate cor- rection was made in the thermocouple emf measured with

the power on. The accuracy of the measurements is largely that as- sociated with the measurement of temperature using an

optical pyrometer. For the present work the maximum uncertainties in the range 2,500 °F to 3,800 °F are believed

to range from about 8 °F to 12 °F. 12 p. (Paper 66C1-81,

P. 1). A method for the self-calibration of attenuation-measuring systems, R. L. Peck The theory and experimental procedures are given for the self-calibration of insertion loss or attenuation- measuring systems. Four circuit configurations are de- veloped. The calibrations may be obtained by simple

graphical means or by an analytical solution. Experi- mental results are given which demonstrate that, by using

the techniques outlined, attenuation calibrations of high accuracy may be made without reference to any previously

calibrated attenuator. 6 p. (Paper 66C1-82, p. 13).

Special shielded resistor for high-voltage d-c measurements, J. H. Park A new design for an accurate high-voltage d-c standard

resistor has been devised. It is made up of a large number of individually shielded, one-megohm wire-wound

resistors connected in series and arranged to form a

vertical helix between a ground plate and a high-voltage

electrode. The individual shields completely enclose each one-megohm resistor and prevent formation of corona

at the surface of the resistance coil no matter how high

the potential of the shield is above ground. The vertical helical configuration with a large "hat", or high-voltage

electrode, on top serves to prevent concentration of

electric field and corona formation at the high-potential end of the resistor. A 200-megohm unit, constructed dur- ing 1955 and tried out up to 100 kv in 1956, indicated the design to be free of corona errors but, for the particular one-megohm resistors used, the variation with temperature was quite large (0.01 percent per °C). A 100 megohm

unit using low-temperature coefficient resistors has been

recently constructed and tested up to 100 kv. An experimental method of checking for corona or leak- age errors at high , values of voltage was developed. It consisted of accurately comparing the current "in" at the high voltage end of the resistor with the current "out" at the ground end for several different values of applied

voltage. These measurements together with others per- formed to check temperature and leakage errors indicated

that the value of resistance for the 100-megohm unit remains constant to within about 10 ppm for voltages up

to 50 kv under ordinary laboratory conditions. At 100 kv

the maximum error (caused by heating) was estimated to about 40 ppm. 6 p. (Paper 66C1-83, p. 19).

Voltage ratio measurements with a transformer capacitance bridge, T. L. Zapf A bridge having inductively-coupled ratio arms, de- signed for the calibration of capacitors, is applicable to the accurate measurement of voltage ratio and phase

angle of a-c voltage dividers at audiofrequencies. The

ability to measure quickly the ratios of certain capacitors 87
in the bridge circuit, and the excellent inherent accuracy

of the inductively-coupled ratio arms in the bridge, combine to permit the measurement of ratio of voltage

dividers by a method independent of absolute deter- minations of any of the electrical units. This paper

describes equipment now available and procedures de- veloped at the National Bureau of Standards for the accurate calibration of voltage dividers at autiofrequen- cies by this method. 8 p. (Paper 66C1-84, p. 25). Weight calibration schemes for two knife-edge direct- reading balances, H. E. Aimer, L. B. Macurdy, H. S. Peiser, and E. A. Week

Direct-reading, two knife-edge, single-pan balances of high quality are shown to be well suited for most laboratory weight calibrations. The requirements for the design

of good calibration series on such balances include:

1. Series are based on external mass standards

rather the dial-operated weights.

2. Balance sensitivity is measured.

3. Substitution differences, not single balance indi- cations, enter into mass determinations.

4. Tests for inadvertent fluctuations in balance in-

" dications are included.

5. Every indication entering into the calibration is subject to some check.

6. Known standard weights are calibrated side by

side with unknown weights.

7. Series must have sufficient redundancy to permit

a study of errors.

8. Buoyancy corrections, when not negligible, are applied. Three rapid series are described in which drift of the balance indication is liable to introduce some uncertainty. Three other series are described which require more

individual weighings, but nearly eliminate the effects of such slow drifts. When unknown weights are compared with standards of the same denomination simplification is achieved usually associated with a loss of accuracy. Finally, methods

for tolerance testing on single-pan balances are given.

12 p. (Paper 66C1-85, p. 33)- Tunnel diode large-signal equivalent circuit study and

the solutions of its nonlinear differential equations,

S. B. Geller and P. A. Mantek A large-signal equivalent circuit for the Esaki or tunnel diode is presented that characterizes the dynamic and

static response of this semiconductor device. Nonlinear

differential equations are written on the model and a graphical-numerical solution technique is described. Analog computer solutions for the nonlinear equations are also discussed for various modes of operation. 6 p. (Paper 66C1-86, p. 45). A missile technique for the study of detonation waves,

F. W. Ruegg and W. W. Dorsey

Problems and effects of stabilizing combustion and

detonation against hypersonic flow were investigated by observation of a 20 millimeter spherical missile in a stoichiometric mixture of hydrogen and air at rest. Combustion produced detectable effects on the shape and

position of the shock wave at Mach numbers between 4 and 6.5, and above pressures of one-tenth atmosphere. Chemical equilibrium probably was not reached in the time the gas spent near the front of the sphere. One of the factors in the delayed equilibrium was delayed igni- tion behind the shock wave, which was observed to be between about one and ten microseconds. Ignition delay

is explained in terms of chemical kinetic theory and compared with results of experiments in shock tubes. Strong combustion-driven oscillations originated in front of the sphere, with . frequencies up to about one-tenth megacycle per second. These were observed when the Mach

number was less than 6 at a pressure of one-half temperature, and less than 5 at one-quarter atmosphere. A large reduction of the drag coefficient of the missile was noted

in one case of intermittent combustion. 8 p. (Paper

66C1-87, p. 51). Creep of cold-drawn nickel, copper, 70 percent nickel-30 percent copper, and 30 percent nickel-70 percent cop- per alloys, W. D. Jenkins and W. A. Willard Creep tests were made in tension under constant loads

at temperatures of 300, 700, 900, and 1,200 °F on nickel, copper, 70-percent nickel-30-percent copper, and 30- percent-nickel-70-percent copper specimens, initially cold-drawn to 40-percent reduction in area. Conformance

to the conventional creep rate laws was obtained only over limited ranges of stresses, temperatures, creep

rates, and strains. Metallographic examinations were

carried out on some of the fractured specimens to ascertain the effects of temperature and stress on the necking

characteristics, internal cracking, subgrain formation and

the number and distribution of "etch figures." The

relations between cold-drawing and the creep characteristics are discussed. 18 p. (Paper 66C1-88, p. 59). April-June 1962 Effect of vibration and shock on unsaturated standard

cells, R. J. Brodd and W. G. Eicke, Jr. The effect of mechanical vibration and shock on a group

of 500-ohm unsaturated standard cells has been investi- gated. Vibration studies were conducted at frequencies

of 10 , 20 , 30 , 50 , 70, 100, 200 , 500, and 1,000 cycles per second with accelerations of 1, 2, 5, 7, and 10 gravities

(g). The shock studies were conducted with shock dura- tions of 6.2, 11, and 18 milliseconds and shock accelerations of 10 , 20 , 30, and 40 g. The vibration of the cells produced an alternating component in the emf of the cells

at the same frequency as the frequency of vibration and

dependent on the magnitude of the acceleration. At low

frequencies distortions and harmonics were found in the alternating component of the cell emf. In addition to the alternating component a shift in the cell emf was also ob- served during vibration which depended on the magnitude

of the acceleration and the frequency of vibration. At all frequencies and at 1 g acceleration the cell emf was within the 0.01 percent limit of precision usually assigned to unsaturated cells. A large transient emf often exceeding one millivolt was observed during the shock studies. However, the steady emf of the cell did not change more than two microvolts in the shock study. Neither vibration nor shock had a lasting effect on the emf of the unsaturated 88
cells. Possible sources for the observed transient ef- fects are considered. A method for mounting the standard

cells so that mechanical vibration or shock is efficiently transmitted to the test cell is described. 13 p. (Paper

66C2-89, p. 85). Experiments on the burning of cross piles of wood, D. Gross

Experiments have been performed in which geometrically scaled, unenclosed, cross piles of wood were burn- ed under controlled conditions. For sticks of square cross

section ranging in size from 0.16 to 9.15 centimeters, the typical weight-time curve illustrated the three characteristic stages: ignition, active combustion, and decay. Forthe active combustion stage, the maximum rateof burn- ing (rate of weight loss) was determined and all the test data were correlated in terms of a porosity factor involv- ing the vent area of the pile and the exposed surface area

of the sticks. The correlation between the scaled rate of burning and the porosity factor may be simply considered

in terms of three regions:

a. Diffusion-limited combustion, in which the scaled

rate of burning is very nearly proportional to the porosity

factor,

b. free combustion, in which the scaled rate of burning

is independent of the porosity factor, and

c. nonsustained combustion, in which the openness of

the pile prevents the maintenance of combustion.

Similarity considerations of flame height and radiant

intensity data indicate that a simple model may adequately describe the natural convection burning of cross piles

of wood of the type and size range investigated. 7 p. (Paper 66C2-90, p. 99). Transfer of NBS X-ray beam calibrations, J. S. Pruitt, A. Allisy, G. Joyet, W. Pohlit, M. Tubiana, and

C. Zupancic A large aluminum ionization chamber has been cali- brated at the United States National Bureau of Standards

to determine the total amount of energy transported by a bremsstrahlung beam. This chamber was carried to Europe and used to transfer this absolute calibration to similar ionization chambers in betatron laboratories in France, Western Germany, Switzerland, and Yugoslavia. The transfers were made by direct experimental comparison of the chamber sensitivities in the betatron X-ray beams in these laboratories. The transferred calibra- tions were corrected for differences in X-ray beam size and filtration. 6 p. (Paper 66C2-91, p. 107). Identification of metallurgical reactions and their effect on the mechanical properties of 17-7 pH stainless steel, H. C. Burnett, R. H. Duff, and H. C. Vacher

In order to study the relationship between the metallurgical reactions that occur during aging treatments of

17-7 PH and the accompanying changes in mechanical

properties, samples of 0.0025 in. thick foil, annealed at 1950 °F for l/2 hour and then conditioned at, 1400 °F for

l

lA hours, were given aging treatments at 850 to 1150 °F. Bulge test specimens, punched from the aged samples, were tested and used for metallographic, X-ray diffraction and electron diffraction examinations. Electron diffraction patterns obtained from selected areas in carbon extraction replicas showed the presence of ordered ferrite (B2 CsCl type BCC structure) in specimens aged 68 hours

at 1050 °F. The aging treatments, bulge test data, and

austenite contents obtained at 1050 °F indicated that the abrupt increase in strength and loss in ductility were caused by immediate formation of the ordered ferrite constituent, but the subsequent rapid recovery of ductility and slower loss in strength were caused by a reversion

of random ferrite to austenite. At temperatures of 970° F

and below, there was no reversion and after the abrupt increase in strength and loss in ductibility there was no

further change in properties. 7 p. (Paper 66C2-92 p

113. The ideal Lovibond color system, D. B. Judd, G. J. Chamberlin, and G. W. Haupt Lovibond red, yellow, and blue glasses, widely used

as color standards in industry, are assigned numerals in accord with the basic plan of marking each glass with the number of unit glasses of the same type through which

light must be passed to produce its color. It is possible

to compute from the spectral transmittances of the unit glasses defining the Lovibond scales the CIE specification of the color produced by all combinations of any number of unit glasses. Such specifications were computed in 1939 not only for all ideal red, yellow, and blue Lovibond glasses illuminated by CIE sources B (repre- senting noon sunlight) or C (representing average daylight) but also for two-part (red-yellow, yellow-blue, or

blue-red) combinations thereof. The present paper gives

the results of such computations for CIE source A (repre- senting gas-filled incandescent lamps). Although actual Lovibond glasses must unavoidably depart somewhat from

this definition of the ideal Lovibond system, the computed color specifications serve to indicate with good

reliability not only die CIE specification of the color produced by single glasses and two-part combinations,

but also the choice of Lovibond glasses required to pro- duce a color of any desired chromaticity within the gamut

of the system. 16 p. (Paper 66C2-93, p. 121). Systems of electrical units, F. B. Silsbee The various systems of measurement, with their respective sets of units, used in die literature on electricity and magnetism are described in detail. Their historical development is summarized. The manner in which each

is derived from either of the two alternative points of view of the experimentalist and the theoretician is compared and contrasted. The desirability of recognizing

both points of view in international standardization,

particularly when discussing rationalization, is pointed

out. The present status of the absolute measurements on

which all electrical units are based is reported, and

tables are included for the conversion of equations and

numerical values from one system to another. 42 p. (Paper 66C2-94, p. 137). July-September 1962 Measurement of longitudinal spherical aberration in the

extra-axial region of lenses, F. E. Washer and W R

Darling A method of measuring longitudinal spherical and

chromatic aberration in the extra-axial region of lenses 89
is described. The method employs an especially constructed optical T-bench equipped with nodal slide and

angle-measuring telescope. The determinations are based upon measurements of angular deviations in selected

small regions of the collimated beam emergent from the lens under test. The underlying theory of the method is presented together with a brief description of the apparatus used and technique of measurement. Results of measurement on three lenses are included. 11 p. (Paper

66C3-95, p. 185). Spark-gap flashover measurements for steeply rising voltage impulses, J. H. Park and H. N. Cones Two designs of thin ribbon resistors have been devised which are suitable for high-voltage surges and have very low time constants (2X10 -9

sec). They were used in making up dividers for measuring linearly rising chopped

impulses with peak voltages up to 300 kilovolts and

times to sparkover from 0.03 to 50 microseconds. Errors

in divider ratio due to residual inductance were found by computation to be less than 1 percent. Stray capaci- tance errors were kept low by making total divider re- sistance 1,000 ohms or less. By a combination of computation and experimentation, capacitance errors were deduced to be not greater than 1 percent for times to sparkover 0.1 microsecond or greater. A large number of oscillograph records were obtained

of spark-gap flashover voltage with linearly rising voltage impulses at rates of rise up to 10,000 kilovolts per micro- second. From these oscillograms data were derived

giving a relation between rate of rise (or rise time) and

flashover voltage for (1) 12.5-cm-diameter spheres spaced

6 cm apart, (2) 25-cm-diameter spheres spaced 6 cm, and

(3) 6.5-inch-diameter uniform field electrodes spaced 5 cm. Volt-time curves showing these relations were

plotted. It is recommended that the curve for 25-cmdiameter spheres be used as a reference standard for interlaboratory comparison of measurement methods.

11 p. (Paper 66C3-96, p. 197). Evaporated-film electric hygrometer elements, F. E. Jones

This paper reviews the development at the National Bureau of Standards of an evaporated thin film electric hygrometer element and presents experimental data to illustrate characteristics of die element. These characteristics are explained, at least in part, in terms of physical principles, and especially with reference to the physical adsorption process. The applicability of the evaporated thin film to upper

air humidity sounding is discussed. The effects of such

variables as film thickness, substrate temperature, and heat treatment in the film production processes on

the characteristics of the hygrometer element are illus- trated. Of the fourteen compounds thus far investigated as the thin film material, results for barium fluoride, potassium metaphosphate, cerous fluoride, and lead

iodide films are presented. Lead iodide films with electrodes deposited over the films are of particular interest due to the relative stability of the calibration with storage and the small temperature coefficient of

electrical resistance. A plot of an upper air humidity sounding obtained with a barium fluoride element, indi- cating the rapid response and the high sensitivity of the

element under flight conditions, is included. 8 p. (Paper

66C3-97, p. 209). Methods of measuring the resistivities of anisotropic conducting media in situ, S. Rush

Several static boundary value problems involving

anisotropic media have been solved and the results are presented here. The solutions have been applied to simple electrode configurations to obtain formulas for in situ determinations of the resistivities of anisotropic con- ducting media. The boundaries treated include infinite, semi -in finite, slab and spherical shapes. The media are anisotropic with a common resistivity in two orthogonal

directions and a lower resistivity in the third orthogonal

direction. 6 p. (Paper 66C3-98, p. 217). Corrosion of steel pilings in soils, M. Romanoff

Steel pilings have been used for many years as structural members of dams, floodwalls, bulkheads, and as load- bearing foundations. While its use is presumably satis- factory, no evaluation of the material after long service has been made. In cooperation with the American Iron and Steel Institute and the U.S. Corps of Engineers, the National Bureau of Standards has undertaken a project to investigate the extent of corrosion on steel piles after many years of service. Results of inspections made on steel pilings which have been in service in various underground structures under a wide variety of soil conditions for periods of exposure up to 40 years are presented.

In general, no appreciable corrosion of steel piling was found in undisturbed soil below the water table re- gardless of the soil types or soil properties encountered. Above the water table and in fill soils corrosion was

found to be variable but not serious.

It is indicated that corrosion data previously published

by the National Bureau of Standards on specimens ex- posed under disturbed soil conditions do not apply to pilings which are driven in undisturbed soils. 22 p. (Paper 66C3-99, p. 223). Corrosion rates of ferrous alloys (Fe-Cr and Fe-Cr-Si) measured by polarization technique, W. J. Schwerdtfeger A series of ferrous alloys containing chromium up to 18 percent and a similar series containing chromium with

silicon (3 to 4 percent) were exposed from 2 to 3 months

to city water to which had been added 3 percent by weight

of sodium chloride. Cathodic and anodic polarization curves were obtained

during two entire exposure periods at periodic intervals. Previous studies by the author along these lines were

confined almost exclusively to corrosion processes which were either under cathodic or mixed control. Data

from the present study show that corrosion rates can be

calculated from polarization curves, even though the corrosion reaction is under anodic control as was the case with alloys having about 14 and 18 percent of chromium. 10 p. (Paper 66C3-100, p. 245). A furnace for thermocouple calibrations to 2,200 °C,

D. B. Thomas

A tantalum-tube furnace has been constructed to cali- brate and investigate the thermoelectric behavior of high- 90
temperature thermocouples. The furnace and its associated equipment were designed with emphasis on features

that would assure a high degree of accuracy in measure- ments that are made at high temperatures and also with emphasis on trouble-free performance. Data that were

obtained during furnace operation showed that thermo- couple depth of immersion into a properly designed black- body is of considerable importance if good agreement is

to be realized between a calibrated optical pyrometer and

a calibrated thermocouple that has been placed in the hot zone of the furnace. High-purity helium gas can be used

in the furnace to keep thermocouple contamination to a minimum. 6 p. (Paper 66C3-101, p. 255). Total hemispherical emittance of coated and uncoated

Inconel and types 321 and 430 stainless steel, J. C. Richmond and W. N. Harrison The total hemispherical emittance of specimens of three alloys, Inconel and types 321 and 430 stainless

steel, in six different surface conditions, was evaluated

at temperatures in the range 200 to 1,000 °C by a modification of the hot filament method. The surface condi- tions were (1) polished, (2) sandblasted, (3) polished and then oxidized, (4) sandblasted and then oxidized,

(5) coated with NBS coating A-418, and (6) coated with NBS coating N-143- The total hemispherical emittance was markedly

affected by the surface treatment. In general emittance was low for polished specimens, intermediate for sandblasted specimens, and high for oxidized or ceramic- coated specimens of each alloy. 9 p. (Paper 66C3-102,

p. 261). "Mail Separator" control computer preliminary logical design, S. Henig and E. C. Palasky A computer design is presented for a "Mail Separator"

type machine whose purpose is the synthesizing of an automatic continuous flow process from a post office's

letter sorting operations. This computer accepts letters' category and machine

storage location information as aperiodically generated

at twenty operator stations. Using the storage locations, the computer places the category information in a memory

section whose arrangement is analogous to the letters' physical storage component. A running inventory with respect to 200 categories is kept for the contents stored

in the machine's 2,400 individual letter slots (locations). Periodically, the computer makes a determination, pre- mised on optimum inventory reduction, of the next cate- gory to be unloaded from machine storage. This category

is shifted to the section which analogously retains the

10 to 30 categories of the stacks forming on the machine's

output conveyor. The computer continuously makes

identity comparisons between the categories of the stacks

forming and the letters stored. The slot location co- incident with an identity is then converted to a slot gate opening signal. After testing the letter category of each

slot location in the machine, the stack category with its synchronism is transmitted for the purpose of controlling the subsequent process operations. 12 p. (Paper 66C3-

103, p. 271).

Method of measuring emissivities of metals in the infrared, A. G. Maki and E. K. Plyler A method of measuring normal spectral emissivities in the infrared region from 1 to 13 ^ is described. It consists of comparing the rate of emission of radiant energy

from a blackbody with that from the specimen. The two observed radiances are made equal by adjusting the temperatures. An equation is derived for use in calculating the emissivity for the observed temperatures. The

main sources of error arise in the measurement of the temperature of the specimen and the temperature of the blackbody. As an example of the method, the normal

spectral emissivity of gold has been measured in the range from 4 to 13 ti at temperatures from 550 to 1,000 °K. The emissivity was found to range from 0.014 at 4 fi and 550 °K to 0.0256 at 9 \i and 1,000 °K. A table is included which lists the values of emissivity from 4 to 13 /i and from 550 to 1,000 °K at intervals of 50 °K.

5 p. (Paper 66C3-104, p. 283). October-December 1962 An ultra-high speed image dissecting camera for photo- graphing strong shock waves, K. B. Earnshaw and

C. M. Benedict An ultra-high speed image dissecting camera patterned

after an original design by Sultanoff has produced motion

pictures of shock waves having velocities greater than

7 cm/microsecond. The camera is readily adaptable to either streak or framing photography. A discussion of the camera system design indicates the modifications of

the original design which allow for greater flexibility of camera use. Several photographs of high speed shock waves are used to demonstrate the various modes of camera operation. The very high framing rate (lxlO8 / second) and the easy adaptation from streak to framing photography make this camera a particularly useful tool

for research in the field of very fast shock waves. 15 p. (Paper 66C4-105, p. 297). Biprism method of determining the equivalent focal length

of flat field lenses, W. R. Darling A device is described that permits the rapid determination of the equivalent focal length of a lens. A trans- mitting biprism mounted between a collimated light source and a lens, divides the light incident upon the front of the lens into two parallel beams making a fixed angle

with one another. On passing through the lens, two images are formed in the focal plane. The magnitude of the lateral separation of the images is determined by the angular separation of the two incident beams and the focal length of the lens. The focal length of the imaging

lens may be determined from the measured separation of the images at the focal plane of the lens and the known

angle of deviation of the two incident beams produced by

the biprism. 4 p. (Paper 66C4- 106, p. 313). Effect of air drag on the motion of a filament struck transversely by a high-speed projectile, F. L. McCrackin The effect of air drag on the motion of a filament struck transversely is treated theoretically. The air drag is

91
shown to produce curvature in the transverse wave formed

by the impact, to increase the speed of the transverse- wave front, and to increase the strain in the filament. The theory is applied to the case of a nylon yarn im- pacted transversely at 189 meters/second. The calculated radius of curvature of the yarn was 1.1 meter, which

agreed well with 1.2-meter radius obtained by experiment. The calculated effects of air drag on the strain and dis- tance traveled by the transverse-wave front 601 micro- seconds after impact were small. 6 p. (Paper 66C4-107,

p. 317). A precision noise spectral density comparator, C. M. The theory is given for a precision comparator that measures the ratio of two noise spectral densities. The

relative error of a single measurement is also derived. The comparator described removes or alleviates many

of the problems in high-speed switching, and since

the instrument operates under null conditions, the null position is essentially independent of amplifier noise and gain instabilities. 8 p. (Paper 66C4-108, p. 323).

Stresses in a plate uniformly compressed over portions

of its two opposite edges, M. Chi and W. D. Kroll The stress distributions in rectangular plates with symmetrical uniform loads over central portions of two

opposite edges are evaluated theoretically. Results

are shown to be applicable to the stress analysis of a uniaxially loaded plate which is elastically constrained

by an unloaded plate perpendicular to it. This structural configuration is often found in welded assemblies. A comparison of experimental results with theoretical results for a simple welded structure shows reasonable

agreement. 16 p. (Paper 66C4-109, p. 331). Studies of the stress-corrosion cracking of low-carbon

steels, H. L. Logan

The mechanism of stress-corrosion cracking in low- carbon steels was investigated using notched specimens,

stressed in tension to produce a slight amount of plastic deformation, and exposed in a boiling 20 percent aqueous

solution of NH«N03

. Initiation and propagation of cracks were studied by removing specimens for metallographic examination after stated periods of exposure and by simultaneously recording extensions and electrochemical

solution potentials. Cracks were initiated after about 20 minutes' exposure and complete failures occurred in 200 minutes or more. Both crack initiation and propagation were postulated to result from an electrochemical process

in which the anodic areas were submicroscopic. Tensile

fractures were initiated in the corroded specimens several times before complete failure occurred but were prevented

from going to completion because of the energy involved

in forming the surfaces of the cracks and the strain hardening and the strain aging of the steel at the tips of

the cracks. 10 p. (Paper 66C4-110, p. 347). A dual centrifuge for generating low-frequency sinusoidal

accelerations, R. O. Smith, E. A. Willis, and J. S. Hilten

This paper describes an experimental "dual centrifuge"

in which an accelerometer being calibrated is carried around a circular path in a horizontal plane. If the instru- ment is constrained to have nonrotational motion, such

as is provided by a parallel link device, sinusoidal

excitation along its sensitive (horizontal) axis is obtained. The excitation obtainable is equivalent to linear excitation but at unusually low frequency and large dis- placement. For example, a machine has been built which

has a frequency range from 0.5 to 30 cycles per second,

a displacement (zero to peak) up to 12 inches, and

develops an acceleration amplitude, useful for calibration, up to 100 gravity at 10 cycles per second and

above. 6 p. (Paper 66C4-111, p. 357).

Rotational micromanometers, K. Lofquist A rotational manometer may be defined as an instru- ment which measures a pressure difference by balancing

against it a known pressure difference generated by a rotating element. A single fluid is used, and balance is determined by the absence of flow in a detector. In one

type, the centrifugal manometer, the rotor-generated pressure is independent of molecular viscosity and is predictable. This instrument, which has been previously

investigated and tested in air, is here adapted for use in water. Under the conditions of test, it proved repeatable

to within about ±2 percent, for pressure differences above

1 dyne cm

-2

, and to about ±10 percent for pressure

differences down to 1/10 dyne cm

-2

. An alternate type,

in which the rotor-generated pressures depend upon

viscosity, was found, when tested, to be unsatisfactory. A simple general analysis, supported by observations, shows the dependence of manometer sensitivity upon the resistance of the system and the design of the flow

detector. 9 p. (Paper 66C4-112, p. 363). Study of gypsum plasters exposed to fire, J. V. Ryan

Experimental results are reported from a study in which small gypsum plaster specimens were exposed to controlled fires similar to those to which large building elements have been subjected in tests by a recognized

standard method. The small specimens were tested without either structural load or restraint. Their fire performances were judged on time to a temperature rise

criterion. The results were analyzed to determine the effects on fire performance of variation of mix ratio, aggregate type and density, duration of aging, and relative humidity of the ambient in which the specimens were

aged. Mix ratio and aggregate density, over the ranges

normally used, had little effect, if any, on fire per- formance. The times to temperature rise for perlite and

vermiculite aggregate plasters were essentially equal, but shorter times were observed for sanded plasters. Duration of aging and relative humidity of the ambient had a significant effect only for short aging periods and

very high relative humidity conditions. Estimates of thermal properties of gypsum plasters at elevated temperatures were derived from the data. These

estimates should be useful for predicting fire endurances

of building elements involving gypsum plaster. 15 p. (Paper 66C4-113, p. 373).

92
TITLE PAGE AND CONTENTS TO VOL. 66C. 4p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

C. ENGINEERING AND INSTRUMENTATION, VOLUME

67C, JANUARY-DECEMBER 1963. January. March 1963 Method for calibrating a standard volt box, B. L. Dunfee A volt box provides several discrete ratios and permits

the accurate measurement of direct voltages (maximum

about 1,500 volts) through their reduction by suitable

factors to values within the measuring capability of a potentiometer. The ratios of a volt box are measured

against those of a standard using a "difference" technique. The standard volt box used at the National Bureau of Standards possesses those design features required for a ratio standard and lends itself to a "self- calibration" technique. This paper describes a method

for measuring its ratios at rated and above rated voltage

to an accuracy of 10 parts per million or better using a Direct Reading Ratio Set and a group of resistance standards. Although the method is described in its particular application to the NBS standard it can be used equally well in the measurement of other ratio networks. Errors

that might appear in the measurements and procedures

for evaluating their magnitudes are outlined and the derivation of a general expression that defines all ratios

in terms of measured quantities is presented in an appendix. Comments and further details regarding the standard and its use are included. 13 p. (Paper 67C1-114, p. 1). Stability of residual thiosulfate in processed microfilm, C. I. Pope The concentration of residual thiosulfate (hypo) in processed microfilm and its variation with storage humidity were measured. The initial thiosulfate concentration varied linearly with the image density up to a density of about 2. The rate of decomposition of the thiosulfate increased as the relative humidity increased. The concentration of thiosulfate in a silver-free area remained constant for nine months in film stored at 14- percent relative humidity but began to decrease within two weeks at 88-percent relative humidity. The residual

thiosulfate in processed microfilm reacted with the silver

in the image to form silver sulfide and the amount of sulfiding during aging at 88-percent relative humidity was measured. The residual thiosulfate concentration in microfilm was found to vary linearly with the silver concentration in the fixing bath. Potassium bromide, po- tassium iodide, and sodium chloride reacted with the residual silver thiosulfate complex making the thio- sulfate soluble. Potassium bromide and iodide effected

the complete elimination of thiosulfate. 10 p. (Paper

67C1-115, p. 15). Equipment for single crystal growth from aqueous solution, J. L. Torgesen, A. T. Horton, and C. P. Saylor The growing of large single crystals of high quality from solution requires the precise control of supersaturation and the avoidance of thermal and mechanical

shock. Uniform growth conditions and cleanliness need

to be maintained. Good seed crystals are necessary and

the accidental introduction or generation of new nuclei should be prevented insofar as possible. In the apparatus and equipment assemblies here described, the crystal- growth bath is designed for uniform growth conditions and the exclusion of contamination. The support for the crystals provides for convenient mounting of the seeds, holds the crystals firmly, and allows their easy removal

with minimum damage. A new reversing rotation mechanism promotes equal washing of the crystal surfaces and

achieves uniform temperature and composition of the solution without, at the same time, producing significant mechanical stresses in the crystals. The temperature

controller gives regulation of the temperature an order of magnitude more sensitive than those hitherto used and

provides for stepless change of temperature. The crystals are thus free from liquid inclusions found to result from sudden acceleration of growth. The electrolytic con- ductance of ionic solutions may be used as a precise and

sensitive measure of solution concentration and supersaturation. The crystal-growth procedures which are reported have resulted in the production of very good

single crystals of a considerable variety of chemical

phases. 8 p. (Paper 67C1-116, p. 25). An automatic multichannel correlator, R. F. Brown, Jr. Very early in the Infrasonic Research Program of the U. S. National Bureau of Standards, it became apparent

that the only way to differentiate between local meteorological pressure variations and the infrasonic signals

from distant sources was through the relative time of

arrival of the pressure disturbance at pickups spaced

several miles apart. The "Multichannel Correlator" is an analog computing instrument that was designed to detect these infrasonic signals. At each pickup the pressure variations are converted

to FM audio signals which are transmitted over leased

telephone lines to the correlator. At the correlator these FM signals are demodulated and recorded on a one-fourth inch per minute multichannel magnetic tape. The re- corded data frequency range is 0.02 to 1.0 cycles per second and the pressure range is 0.1 to 50 dynes per square centimeter. Ten-minute blocks of data are read

from the tape and amplitude equalized to a constant root mean square value. A programed time-delay device pro- duces the equivalent delays appropriate to a continuous

horizontal azimuth search for velocities in the range of 280 to 400 meters per second. The correlator output is a continuous record of the average of the rectified sum of

the delayed channel signals. 6 p. (Paper 67C1-117,

p. 33). Elastic constant-porosity relations for polycrystalline

thoria, S. Spinner, F. P. Knudsen, and L. Stone The relations between the elastic constants and

porosity for about 300 thoria specimens have been deter- mined. Both Young's and the shear modulus for each specimen were obtained by a dynamic resonance method. From these two moduli, Poisson's ratio was computed, The decrease in the elastic constants with increasing

porosity was greater than would be expected from the

theory. This greater decrease for the experimental

values is attributed to the fact that the specimens do not conform to the idealized assumptions of the theory. 8 p. (Paper 67C1-118, p. 39). 93
An oxygen partial pressure warning instrument, L. Greenspan An instrument has been developed to monitor partial pressure of oxygen in the respiratory air supply to an

aviator. The requirements for the application are small

size, light weight, capability for measuring oxygen partial pressure with an accuracy of ± 5 millimeters Hg and

response times less than 15 seconds. The instrument

utilizes an oxygen absorber in one arm. Theory of the instrument is discussed and expressions for response and response time are derived. A prototype measuring 9% x 7%x 7% inches and weighing about 13 pounds is described and performance data given. The prototype measures oxygen partial pressure within ±4.5 milli- meters Hg from sea level to 45,000 feet with response

time from 5 to 124 seconds. It may be used either as a warning device or as an indication. Means for improving response time are discussed. 17 p. (Paper 67C1-119,

p. 47). New fast-opening, large-aperture shutter for high-speed

photography, E. C. Cassidy and D. H. Tsai A fast-opening, large-aperture, high-transmittance

shutter has been developed. This shutter consists essentially of a metallic foil in a capacitor discharge circuit. The opening action is obtained when the foil is buckled and compressed laterally by the electromagnetic forces which accompany the heavy surge current through the

circuit, during a transient discharge. A shutter made

up of two foils in a loop arrangement may be opened to an area 1 inch x 3 inches in less than 45 microseconds. Some of the factors affecting the design and operation

of the shutter are briefly discussed. These factors in- clude the electrical energy input to the foil, the circuit parameters, and the materials and the size of the foil. Some experimental results are also given. 4 p. (Paper

67C1-120, p. 65). Equations for the radiofrequency magnetic permeameter,

C. A. Hoer and A. L. P.asmussen The rf permeameter is an impedance transformer for measuring toroidal-shaped magnetic materials at radio- frequencies. Several equations already exist for calculating permeability (/x') and dissipation factor (tan 8) from measured input impedances of the permeameter. The

results from these equations do not agree with each other except over a small range of tan 8. In this paper the permeameter is represented by its equivalent T-network

and an exact solution for \l and tan 8 is obtained in terms of the input impedances and the impedance of a calibration core. The resulting equations are valid for

all values of //and tan 8 for the conditions discussed in the paper. Values of \l and tan 8 calculated from these exact equations are compared with those calculated from previous equations, and these results, differing as much

as several orders of magnitude, are shown graphically. A

frequency range from 0.1 to 50 Mc/s and a tan 8 range

from 0.0005 to 5 are covered. 8 p. (Paper 67C1-121,

P- 69).

April-June 1963 Temperature dependence of the elastic constants of thoria specimens of varying porosity, S. Spinner, L. Stone, and F. P. Knudsen The temperature dependence of Young's and the shear modulus of 18 thoria specimens of porosities ranging from

3.7 to 39-4 percent have been measured by the dynamic

resonance method. The temperature range of the measurements was from 25 to 1,300 °C. The moduli decreased

with increasing temperature in general accordance with

the pattern observed for other polycrystalline materials. The relative decrease in modulus with temperature for all the materials was essentially independent of porosity up

to about 800 °C. Above this temperature the relative de- crease in modulus for the high porosity specimens tended

to be more rapid than for the low porosity specimens.

Also, Poisson's ratio for any particular specimen re- mained constant over the entire temperature range of measurement. 8 p. (Paper 67C2-122, p. 93). Residual stresses and their relaxation on the surfaces of sections cut from plastically deformed steel specimens,

C. J. Newton

Residual stresses were measured on sections cut from

steel specimens after plastic extension and after plastic compression, using the inclined incident X-ray beam pro- cedure. Computations based on the conventional assumption of a zero surface-normal stress component were compared with those based on a recently suggested method

of allowing for some contribution of the normal component. The conventional calculations indicated an axial residual

stress opposite in sign to the preceding deforming stress. The more recent method is said not to do so after compression but was inconclusive in this experiment because

of lack of precision arising from microfluctuations of stress about the average. Doubt was cast, moreover, on

the validity, except perhaps as to sign, of extending the stress values measured on sections cut from a specimen

to the residual stress system existing within the specimen

before sectioning. 9 p. (Paper 67C2-123, p. 101). Permeation rates of electrolytic hydrogen and deuterium

through iron, J. W. Pitts The relative permeation rates of electrolytically dis- charged hydrogen, deuterium, and mixtures of the two

through sheet-iron cathodes were measured, and values

for both the separation factor and the combined

separation-permeation factor were determined. Also, data were obtained on the influence of strain, surface condition, and chemically precharged hydrogen on the permeation rate of electrolytic hydrogen. 8 p. (Paper 67C2-1 24,

p. 111). Steady state heat conduction in cylinders with multiple continuous line heat sources, B. A. Peavy

A mathematical analysis is presented for steady state heat conduction in cylinders, consisting of one or two

94
isotropic materials disposed in concentric cylindrical volumes around the axis, heated by one or more continu- ous line heat sources parallel to the axis. The analysis

considers both cylinders of infinite length, and cylinders

of finite length subject to longitudinal heat flows arising from end conditions. Numerical solutions are given considering the line sources to be equal in magnitude and

equally spaced angularly at a uniform radius from the axis. An outgrowth of this analysis has been the consideration of several new methods for the determination of the thermal properties of materials. 9 p. (Paper 67C2-

125, p. 119). A radial-flow apparatus for determining the thermal conductivity of loose-fill insulations to high temperatures,

D. R. Flynn A description is given of an apparatus used for deter- mining the thermal conductivities of loose-fill granular materials in the temperature range 100 to 1,100 °C. The

method used in making these determinations was that of

radial heat flow through a hollow cylinder of specimen

material contained between a central ceramic core and an

outer ceramic shell. The heat flow through the specimen was determined by measurement of the power input to a heater in the central ceramic core. The radial temperature drop through the specimen was inferred from temperatures measured in the core and in the shell, thus avoid- ing entirely the problems of measuring a temperature

difference within the specimen material. Experimental

results with an estimated uncertainty of 3 percent or less

are presented for diatomaceous earth having a density of 0.15 g/cmJ

, and for aluminum oxide powders having

densities of 0.40 and 0.44 g/cm 3

. A discussion of the

test method is given, with attention to possible sources

of error. 9 p. (Paper 67C2-126, p. 129). Analysis of a microwave radiometer for precise standardization of noise sources, G. D. Ward and J. M. Richardson

Calibration of microwave noise sources requires a standard source, an attenuator, and an instrument for comparing microwave power levels. A modified Dicke

radiometer is used for this comparison. A detailed anal- ysis of the radiometer is undertaken employing the cas- cading matrix of each waveguide element, in order to evaluate the balance error. The analysis accounts for the general case of noise power arising from lossy ele- ments of the radiometer and shows how these can often be accounted for by discussing temperatures in excess of some reference temperature T 0. It also displays several

potential sources of error in such radiometers and pro- vides the quantitative basis for keeping these sufficiently small. Fluctuations are analyzed as a basis for estimat- ing sensitivity of measurement. Procedures for adjusting

the radiometer to account for the characteristics of the two inputpaths are given. The results are carried through second order in the various reflection coefficients or related scattering matrix elements involved, which are assumed to be small quantities. 21 p. (Paper 67C2-127,

p. 139).

Realistic evaluation of the precision and accuracy of instrument calibration systems, C. Eisenhart

Calibration of instruments and standards is a refined form of measurement. Measurement of some property of a thing is an operation that yields as an end result a number that indicates how much of the property the thing has. Measurement is ordinarily a repeatable operation, so that

it is appropriate to regard measurement as a production process, the "product" being the numbers, i.e., the measurements, that it yields; and to apply to measurement

processes in the laboratory the concepts and techniques

of statistical process control that have proved so useful

in the quality control of industrial production. Viewed thus it becomes evident that a particular measurement operation cannot be regarded as constitut- ing a measurement process unless statistical stability of

the type known as a state of statistical control has been

attained. In order to determine whether a particular measment operation is, or is not, in a state of statistical con- front is necessary to be definite on what variations of procedure, apparatus, environmental conditions, observers, operators, etc., are allowable in "repeated applications" of what will be considered to be the same measurement process applied to the measurement of the same

quantity under the same conditions. To be realistic, the "allowable variations" must be of sufficient scope to bracket the circumstances likely to be met in practice. Furthermore, any experimental program that aims to deter- mine the standard deviation of a measurement process as an indication of its precision, must be based on appropriate random sampling of this likely range of circumOrdinarily the accuracy of a measurement process may

be characterized by giving (a) the standard deviation of the process and (b) credible bounds to its likely overall systematic error. Determination of credible bounds to the combined effect of recognized potential sources of systematic error always involves some arbitrariness, not

only in the placing of reasonable bounds on the systematic error likely to be contributed by each particular assignable cause, but also in the manner in which these

individual contributions are combined. Consequently, the "inaccuracy" of end results of measurement cannot be expressed by "confidence limits" corresponding to a

definite numerical "confidence level," except in those

rare instances in which the possible overall systematic

error of a final result is negligible in comparison with

its imprecision. 27 p. (Paper 67C2-128, p. 161).

July-September 1963 Apparatus for the detection of piezoelectric coupling, L. Frenkel An apparatus for the investigation of the piezoelectric coupling in granular powders is described. The apparatus is based on the method of Giebe and Scheibe but employs the sensitive detection and recording methods commonly employed in the study of nuclear quadrupole

resonances. Some sample recorder traces are shown. The

traces indicate that the apparatus is a workable qualitative

95
tool with at least the possibility of some qualitative usefulness. 3 p. (Paper 67C3-129, p. 197). Large aperture interferometers with small beam dividers,

J. B. Saunders

This paper shows some practical interferometers for testing very large and very small specimens. This is ac- complished by using a particular type of beam divider that operates near the vertex of a convergent or divergent beam

of light that permits almost unlimited size fields of view. Thus very large or very small specimens can be tested. Also, the wave front reversing properties of this beam

divider permit tests to be made without the necessity of using standards of reference, thus eliminating the require- ment for large standards that are usually expensive and

require large working areas. The principles of these inter- ferometers are so closely related to previously described

instruments that very little additional explanation is re- quired for an understanding of their operation. Several

variations of the Kosters prism type of interferometer are shown schematically. 5 p. (Paper 67C3-130, p. 201). A far-infrared vacuum grating spectrometer, L. R. Blaine A far-infrared vacuum grating spectrometer has been

designed, built and tested at the National Bureau of Standards. This instrument has been in operation and

under constant improvement for die past two years. Its useful range of operation is from 30 to 400 cm

-1

. The

detecting and dispersing elements are a Golay pneumatic

detector and a series of 254x3 in. plane gratings. A spectral resolution of from 0.5 to 1.0 cm-1 has been attained

in the region between 30 and 200 cm"1

. The far-infrared absorptions of several halogenated ethanes in the liquid state have been observed and measured. The absorptions observed were: pentachloroethane

,

175.5 cm

-1

, 164.5 cm

-1

, and 85 cm

-1

; symmetric -tetrachlo- roethane, 172.0 cm

-1 and 87 cm

-1

; 1 bromo-2-chloroethane, 202.0 cm"1 and 123 cm"1

. 9 p. (Paper 67C3-131, p. 207). Relation of emittance to other optical properties, J. C. Richmond An equation was derived relating the normal spectral emittance of an optically inhomogeneous , partially trans- mitting coating applied over an opaque substrate to the thickness and optical properties of the coating and the reflectance of the substrate at the coating-substrate inter- face. 10 p. (Paper 67C3-132, p. 217): Minimization of the arrestment error in one-pan, two-knife balance systems, H. A. Bowman and H. E. Aimer The arrestment error is defined as the error associated

with the arrestment, unloading, reloading, and release cycle after correction for balance drift and cnanges in sensitivity with beam tilt. In a well-designed one-pan,

two-knife, constant-load balance the observable arrestment

error is caused by inconstancy of the perpendicular distance

from the effective point of suspension of the hangdown to the effective axis of rotation of the center knife. Four causes for this distance to vary are recognized and their effective removal discussed. The requirements for two

arrestment systems are then set out, one in which the balance bearings remain in contact indefinitely under

nearly constant load, the other in which the bearings are uncoupled in such a way as to permit the bearings to be recoupled in a contact configuration as nearly identical

to the previous configuration as possible. A 1-kg test instrument is described with which many

balance systems can be experimentally investigated in- cluding the two arrestment systems mentioned above (the "constant-load" and "rocking-beam" systems). The arrestment error (expressed as a standard deviation)

for the "rocking-beam" system can be reduced to 1.5x10""* of the load; for the "constant-load" system to 3xl0~9

. When slight external vibrational disturbances are not scrupulously excluded occasional unpredictable shifts in balance indication are observed. These exceed the normal

arrestment errors by about an order of magnitude. The

arrestment error does not vary greatly with beam-swing

period over its normal range. 9 p. (Paper 67C3-133,

p. 227). Determination of residual thiosulfate in processed film, C. I. Pope The Crabtree-Ross procedure, employing the reaction

of thiosulfate with mercuric chloride to form a turbid solution is the usual test for residual thiosulfate in processed

film. Qualitative tests showed that in this procedure part

of the precipitate remains in the gelatin layer of the film, causing the reported concentration of thiosulfate to be too low. When residual thiosulfate was measured in the pres- ence of image silver, the image silver contributed an

additional component to the turbidity. A new test procedure was developed which also employs mercuric chloride as the precipitant but which reveals 2 to 3 times as much

residual thiosulfate as does the Crabtree-Ross procedure. Residual silver causes the formation of additional turbidity which is determined as residual thiosulfate. A trace of gelatin is dissolved from the film during the thiosulfate

test, the amount depending on film type. The trace of gelatin had a pronounced effect on the amount of turbidity. The addition of a known amount of gelatin to the test solution masked the effect of dissolved gelatin, making

it possible to prepare one calibration curve for all types

of film. A new method of measuring the residual silver in processed film was developed. A photoelectric nephelo- meter was used to measure the turbidity. 9 p. (Paper 67C3-134, p. 237). Drag compensation and measurement with manned satellites: feasibility study, R. M. Langer and J. P. Vinti Even at low altitudes approximating those of manned

earth-satellites it is feasible to use external jets to maintain a satellite in a purely gravitational orbit. With the

jets off, it is possible to measure the drag, air density, and time of passage through perigee, by means of observations aboard the satellite. Intermittent operation of the

jets should permit achievement of both objectives. 3 p. (Paper 67C3-135, p. 247). Surface flame propagation oncellulosic materials exposed

to thermal radiation, D. Gross and J.J. Loftus The results of a series of flame-spread tests are summarized and analyzed to delineate the importance of the physical and thermal properties in surface flame propagation on simple and composite slabs. The data are in ac- 96
cordance with relationships for the transient surface temperature rise for irradiated opaque and chemically inert slabs and support a simple concept for the spread of flame on the surfaces of cellulosic materials exposed to thermal

radiation; viz, that flame propagation consists of progres- sive ignition of the solid when a characteristic temperature

is reached. 8 p. (Paper 67C3-136, p. 251). Parallel reversible permeability measurement techniques

from 50 kc/s to 3 Gc/s, C. A. Hoer and R. D. Harrington New measurement techniques are described for deter- mining the complex reversible permeability of ferrimagnetic materials from 50 kc/s to 3 Gc/s with d-c fields applied

parallel to the rf fields in toroidal specimens. In the 50 kc/s to 50 Mc/s range, emphasis is directed towards

recent improvements in the rf permeameter. For measure- ments in the 50 Mc/s to 100 Mc/s range, the feasibility of using variable length re-entrant cavities with quarter wavelength chokes is demonstrated. Two half-wave vari- able length cavities are described for obtaining reversible permeability data in the 100 Mc/s to 3000 Mc/s range. A

technique for avoiding the use of quarter wavelines for isolating the d-c and rf circuits in these half-wave cavities

is emphasized and represents a definite improvement over corresponding slotted line methods. A brief description

of the d-c circuitry developed for these measurements as

well as some typical spectrum data is also given. 7 p. (Paper 67C3-137, p. 259).

October-December 1963 Limitation on electron beam density of unipotential electron guns at low voltages, J. A. Simpson and C. E. Kuyatt The problem of saturating a particular configuration of space with electrons is considered. It is shown that with

unipotential guns of axial symmetry derived from space

charge limited diodes there exist both a minimum energy and a maximum width-to-length ratio of the space that can

be saturated. These limits are derived for the case of convergent flow between concentric spheres. Similar iimits

for partial saturation of the space are derived for cases of convergent, parallel, and divergent flow. 3 p. (Paper 67C4-138, p. 279). New radiofrequency mass spectrometer having high duty

cycle, R. M. Mills A new type of time-of-flight mass spectrometer has been developed which, unlike most other such instruments, uti- lizes a large fraction of the nonpulsed stream of ions. The ions are accelerated through a d-c voltage and then pass into a drift tube. A radiofrequency voltage is ap- plied at the exit and entrance gaps of the drift tube in such a way that the field at the entrance is the negative

of that at the exit. The number of ions which pass through

the drift tube with such a velocity tnat the energy change

from the rf fields is a minimum, is measured by placing an

electrical Darrier in front of the collector and differentiating the cutoff curve. Velocity modulation of die beam

resulting from the rf field at tiie first gap limits the instru- ment to moderate resolution. However, the instrument nas

a 60 percent duty cycle, a value significantly greater than

that achieved by most advantages of electrical and mechanical simplicity. Due to the nature of the instrument's

output, it will be most useful in applications requiring

the analysis of a simple mass spectrum and where high duty cycle is of real value. The instrument has resolved

the isotopes of rubidium at masses 85 and 87, and has

identified one component ion beams ranging in mass frorr helium to cesium. 8 p. (Paper 67C4-139, p. 283). A power-series buildup factor formulation. Application

to rectangular and off-axis disk source problems, J. H. Hubbell The response (e.g., dose-rate) of an isotropic detector

to primary radiation from a finite plane source may, for points less than a mean-free-path distant, be evaluated as the sum over an infinite series. This series is derived by expanding the exponential dependence exp (—fi^r) as a power series in fj$ r and integrating, numerically or analytically, each term over the source array. If the medium is effectively infinite and homogeneous, the scattering properties of this medium can be characterized by

a point isotropic source buildup factor. Buildup factor data are often approximated by formulas having simple

analytic dependences on (j^r and numerical parameters independent of ^r. Any such set of parameters can be used to generate a set of weight functions for an infinite series buildup factor representation which can be used

exp (+fi0

r) 2 bn

• (-nor)"/"' n=0

with the above primary radiation series solution to give, instead, a series solution including both primary and

scattered radiation. Tables of bn 's (air-dose buildup only) derived from coefficients of cubic polynomials fitted to the Goldstein-Wilkins data (NYO-3075) are given for 0<w<13 at primary photon energies of 0.5, 0.7, 1.0,1.5,

2.0, 3.5, 5.5, 7.5, and 9.5 Mev in water, Al, Fe, Sn, W, Pb, and U. The method is applied to give: (1) a compari- son with dose-rates measured by a detector separated

from a Co-60 rectangular plaque food irradiator by a layer

of water and (2) dose-rate profiles at constant heights across a cleared circular area in a Co-60 infinite plane source in air. 16 p. (Paper 67C4-140, p. 291). An alinement interferometer, J. B. Saunders

This paper describes a diverging-beam type of aline- ment interferometer that permits the use of large apertures, provides ruggedness, high sensitivity, and is relatively compact. Since this interferometer is fully compensated,

wnite light can be used. The narrowness of the zero order fringe, relative to separation of fringes, in such a well compensated system

permits settings to better than one twentieth of a fringe width. This corresponds to a lateral displacement of the

light source of less than 1.5 mm at a distance of one mile

for a one-inch aperture instrument and to less than 0.15 mm for a 10-inch aperture instrument. The increase in dmands for higher accuracy in metrol- ogy includes that of pointing. The alinement interferometer described here is a precision device that is rugged and

relatively easy to apply. Its performance, because of its high sensitivity, is severally affected by the homogeneity

of the atmosphere or medium through which the lightpasses. 97
However, this effect is also greatly reduced by the proximity of any two interfering rays of light. 3 P- (Paper 67C4-141, p. 307). Determination of optical path difference for a photographic

objective, F. E. Washer and W. R. Darling A method of measuring longitudinal spherical aberration and optical path differences by a direct visual means is described. The method employs a nodal slide optical bench and a movable-slit system. The underlying theory

is presented together with a brief description of the apparatus used. The results of measurement on a typical lens and a procedure for checking the consistency of measure- ments are included. 8 p. (Paper 67C4-142, p. 311). Development of filters for a thermoelectric colorimeter,

S. H. Emara and R. P. Teele

rhenium thermocouples were made up from these wire samples and tested at approximately 100 deg C intervals up to 2000°C. A fourth order equation and a third order equation were selected to represent the emf of the tungsten- rhenium thermocouple in the range from 0 to 1000»C and

from 1000 to 2000°C respectively. Using these two equations, reference tables were established and are presented

in 5 deg C intervals from 0 to 2000°C and in 10 deg F

intervals from 32 to 3640'F. Inverse tables giving temperature in *C and »F at 20 microvolt intervals are also in- cluded. Information is furnished on variations due to wire

size and among different wire lots and different wire manufacturers. Spectrochemical analyses of the tungsten and

rhenium elements that were used to represent the tables

of temperature versus emf are listed. A graphic comparison

is made between the NBS emf values and values from other investigators. 16 p. (Paper 67C4-146, p. 337).

Filters have been designed for use with photocells and

phototubes in tristimulus colorimeters, but because of the variation in spectral response of these detectors from one

to the other, it has not been worthwhile to attempt to achieve the best possible duplication of the CIE tristim- ulus functions. In the case of a thermoelectric detector, however, the response is so nonselective that the same

filter designs can be used with any thermopile. The new filters permit CIE tristimulus functions and

chromaticity coordinates to be obtained directly with rea- sonable accuracy. Results obtained on a thermoelectric colorimeter for five standard filters are compared with

tristimulus values obtained by computation from spectral transmittance data. 7 p. (Paper 67C4-143, p. 319). Application of air bearings to an electrodynamic vibration standard, T. Dimoff and B. F. Payne

In an attempt to eliminate unwanted resonances and

transverse motions in an electrodynamic exciter used as

a vibration standard, the mechanical suspension-guide for the moving element was replaced with air bearings. The

transverse motions of this exciter showed a distinct im- provement over the transverse motions of the exciters with

flexure plate and tensioned wire supports. The improved

stability of the moving element of the air-bearing exciter made it possible to calibrate this exciter easily by an

interferometer method. Agreement between three methods

of calibration, reciprocity, interferometer, and optical

target, was very good. The results of calibrations of two

types of pickups on this modified standard are presented.

7 p. (Paper 67C4-144, p. 327). Leak-resistant rotation seal for vacuum applications,

F. L. Howard A leak-resistant rotation seal for application with vacuum

systems is described. The packing comprises a system of Teflon cones with deformable ridges that act as bearing

surfaces. 2 p. (Paper 67C4-145, p. 335). Studies on the tungsten-rhenium thermocouple to 2000*C.

D. B. Thomas

Various lots of tungsten and rhenium wire were obtained

from leading American manufacturers. Eleven tungstenTITLE PAGE AND CONTENTS TO VOL. 67. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SECTION

C. ENGINEERING AND INSTRUMENTATION, VOLUME 68, JANUARY-DECEMBER 1964

A Fabry-Perot spectrometer for high-resolution spectros- copy and laser work, K. D. Mielenz, R. B. Stephens, and K. F. Nefflen A Fabry-Perot spectrometer with a piezoelectric spacer was constructed to record with a recorder, or dis- play with an oscilloscope, the fine structure of the Haidinger fringes. The spectrometer is of the fixed spacer

design, which provides great stability of adjustment. It was used to record the Zeeman splitting of the green

line of Hg 1 98

, as well as to exhibit, on the oscilloscope

screen, the multimode output signal of a He-Ne gas laser. 6 p. (Paper 68C1-147, p. 1). A variable impedance power meter, and adjustable reflection coefficient standard, G. F. Engen

Most microwave power meters, such as those of the bolometric and calorimetric types, completely absorb the power which they indicate. The use of these meters is thus usually accompanied by the requirement to either

(1) determine the power at another place in the microwave

circuit from the meter reading, or (2) determine the power

which will be delivered to a different load which is to be substituted for the meter. The evaluation of these relationships plays an im- portant role in the power measurements art. These problems are alleviated by the power measuring

device to be described. This instrument, which is based

on reflectometer techniques, may be used either as a feed-through power meter which indicates the power de- livered to loads of arbitrary impedance, or as a germinat- ing power meter whose input impedance can be adjusted

to arbitrary values without requiring recalibration.

In a slightly modified form the instrument also gives

an indication of the reflection coefficient magnitude to which it has been adjusted. 98
A comprehensive error analysis permits the accuracy

to be determined under general operating conditions.

18 p. (Paper 68C1- 148, p. 7). A laser with a multihole diaphragm, T. Morokuma The properties of a laser with a multihole diaphragm

were both theoretically and experimentally examined. This laser may be called a multibeam laser. Laser action was observed in the optical paths which were defined by

the position of the holes and the cavity configuration. Interference fringes were observed on one of the cavity

mirrors. A wavelength dependent interaction among the beams was observed. It is believed that the wavelength

of a beam can be stabilized by the intensities of the other beams. A possible method will be proposed for the

stabilization. 10 p. (Paper 68C 1- 149, p. 25).

Principles of cryometric impurity determination as applied

to samples of small sizes, C. P. Saylor and G. S. Ross A consideration of the factors that tend to prevent

attainment of thermal and thermodynamic equilibrium

during thermometric methods of purity analysis suggests

that the problems largely originate from spontaneously

introduced inequalities in composition. During either a freezing or melting cycle, the solid phase settles in the

liquid. This results in a greater average purity in the bottom than in the upper part of the vessel. The effects would be particularly strong during a melting sequence

where the liquid released by melting of the solid would

provide the compositional environment for the establish- ment of final temperature. This hypothesis has been

tested by the design of a new cell for small samples. The design incorporates use of small gold pans to hold

solid and liquid in close contact. The results are comparable in precision to those from conventional time- temperature curves with much larger samples, a condition not ordinarily possible with small samples. 5 p. (Paper

68C1-150, P. 35). Reference tables for thermocouples of iridium-rhodium

alloys versus iridium, G. F. Blackburn and F. R. Caldwell The program at the National Bureau of Standards to establish reference tables of temperature versus emf for thermocouples of iridium-rhodium alloys versus iridium has been extended to cover all three of the currently used

thermocouples of this type. In addition to the values

published in 1962 for the 40 Ir-60 Rh versus Ir thermocouples, tables now are available for thermocouples of 60 Ir-40 Rh and 50 Ir-50 Rh versis Ir. These tables give emfs for temperatures in degrees Celsius from 0 to 2150° C and in degrees Fahrenheit from 32 to 3900° F, and

temperatures in these units with emf in millivolts as the argument.

In addition to the reference tables for these thermo- couples, temperature- emf relationships are presented for other alloys containing 10, 25, 75, and 90 percent iridium versus iridium. It appears from the information obtained

on all of the alloy versus iridium combinations tested

that the 50 Ir-50 Rh alloy versus iridium gives about the maximum thermal emf ( 12.2 millivolts at 2150° C), and as

a result may provide the optimum thermocouple combination of this type. 19 p. (Paper 68C1-151, p. 41).

Fringe pattern of an oscillating Fabry-Perot interfero- meter, K. D. mielenz The dependence of the fringe pattern of an oscillating Fabry-Perot interferometer upon the vibration amplitude

is discussed experimentally and theoretically. If the

fringes of the stationary interferometer are wide, the

fringe pattern tends to disappear at certain values of the amplitude. If the stationary fringes are narrow, a splitting of fringes occurs at certain amplitudes. In both cases,

the stationary pattern reappears, with reduced contrast,

at intermediate amplitudes. The practicability of using these effects for the measure- ment of vibration amplitudes is discussed. 9 p. (Paper 68C2-152, p. 73). Interferometer for testing extended surfaces such as sur- face plates and precision ways, J. B. Saunders and

J. V. McDermott A modification of the previously described "Interfero- meter for Large Surfaces" is described that permits the use of smaller prisms for a given sensitivity and a more

practical arrangement of the optics. This arrangement

allows for better structural connection of the elements

into a rigid and moveable unit. This is obtained by a 90 degree rotation of the prism relative to the plane of incidence of the light. 2 p. (Paper 68C2- 153, p. 83). Ferrimagnetic resonance in polycrystalline ferrite and

garnet disks at L-band frequencies, W. E. Case, R. D.

Harrington, and L. B. Schmidt An experimental study made on the measurement of the gyromagnetic ratio and line width of four ferrimagnetic materials at L-band using thin disk-shaped samples in a

rectangular TE { Q 2 mode c avity at 1 107 Mc/s is described. The study emphasized ferrimagnetic resonant measure- ments on a one half inch diameter sample of a given

material as a function of aspect ratio. Experimental

results indicate that for three materials the gyromagnetic

ratio could be accurately calculated from Kittel's equation for aspect ratios of 50 or greater. Because of an anomaly, the calculation was impossible for a fourth material, a nickel aluminum ferrite. Generally, very high aspect ratios are required to cause line width measure- ments to rapidly approach an asymptotic value. 5 p. (Paper 68C2-154, p. 85). Changes in the influence of atmospheric humidity during

fatigue of an aluminum alloy, J. A. Bennett The fatigue strength of 6061-T6 aluminum alloy speci- mens was found to be about 14 percent higher in a dry atmosphere than in a moist one. A series of experiments

in which the humidity was changed after various numbers

of cycles indicated that there was an initial period during which the presence of water vapor had no effect on the

total fatigue life. After this initial period, cracks 99
developed and propagated much more rapidly in a moist atmosphere than in a dry one. The change in sensitivity

to the environment is believed to result from rupture of

the oxide film when the plastic strain becomes locally concentrated. 10 p. (Paper 68C2- 155 , p. 91). The theory of a stable high-speed externally pressurized

gas-lubricated bearing, H. Sixsmith and W. A. Wilson

Externally pressurized gas-lubricated bearings have

been used successfully to support the shaft of a miniature, high-speed expansion turbine. The bearings incor- porate stabilizing cavities to suppress whirl at high speeds. The theory of the bearing design is presented in detail. 14 p. (Paper 68C2-156, p. 101). Infrared spectra of asphalts: Some aspects of the changes caused by photooxidation, P. G. Campbell and J. R. Wright The infrared spectra of coating-grade asphalts to which model organic compounds were added were com- pared with spectra of the original asphalts and with photooxidized asphalts. By this method, it was shown

that the principal oxygen-containing products formed in the asphalt during air- or photooxidation were aldehydes,

ketones, and acids. The presence of esters could not be

confirmed. The effects of air-blowing conditions and elevated

temperature storage on several asphalts were examined

by infrared spectoscopy. Elevated temperature (~260

°C) storage of air-oxidized asphalts, under nitrogen, de- creased absorbance in the carbonyl band at 1700 cm

-1

and reduced durability to accelerated weathering. Photooxidation reactions that occurred at the surface

of thick (625 ^i) asphalt films, as detected by infrared spectroscopy, were the same as those which took place

in the thin (25 fi) films. Also, the photooxidation rates were comparable. Only negligible amounts of photooxidation occurred at a depth of 10 fi beneath the surface. 9 p. (Paper 68C2-157, p. 115).

Response of highly precise balances to thermal gradients,

L. B. Macurdy As small thermal gradients often cause large instabilities in the indications of more precise balances, an in- vestigation was made of the effects of various types of thermal gradients on several such balances. It was

found that the largest instabilities result when the top of

the balance case is cooler than the bottom, and further

that the best performance is obtained when air at the top

is warmer, rather than in thermal equilibrium throughout

the case. The desired thermal gradients, i.e., top warmer

than the bottom, can be achieved through proper insulation of the balance case, with provision for some flow of heat in through the lower front of the case and entrapment

of warm air at the top of the case. These results apply

directly to the equal-arm type of balance; a separate study would be required for balances of different configuration. However, the general nature of the effects of thermal gradients is applicable to some degree to all

types of more precise balances. 6 p. (Paper 68C3-158,

p. 135). A direct-reading two-knife 50-pound balance of high pre- cision suitable for state weights and measures laboratories, H. E. Aimer, H. A. Bowman, M. W. Jensen, L.

B. Macurdy, H. S. Peiser, and B. Wasko

Performance requirements are detailed for robust fast- operating 50-pound balances precise to 1 part in about 500,000 under less than ideal weighing conditions. Careful studies of design and configuration of large- capacity balances lead to the conclusion that the type of balance that can most easily be designed to fulfill these requirements is the one-pan, two-knife, constant-load

balance. The detailed design and construction of such a balance

is described. Performance tests demonstrate that this balance conforms to the requirements. Under good operating conditions precisions of a few parts in 10,000,000 can be achieved. 14 p. (Paper 68C3-159, p. 141). Wave front shearing prism interferometer, J. B. Saunders A small prism interferometer is described that is a modification of the Bates' wave front shearing inter- ferometer. The prism is small, rugged, and versatile. The shape of any converging wave front from any optical element or compound instrument may be measured with

this instrument. Several variations of the prism are described that have

characteristic properties. Special features are introduced

for eliminating spherical aberration effects, for producing

fringes of different characteristics, and for testing all wave fronts up to and exceeding that of an F. 1 cone of

rays. Details for making and adjusting the prisms are given. Examples are given for interpreting the interferograms.

17 p. (Paper 68C3-160, p. 155). A new high resolution small-angle x-ray camera, H. Bamberger and R. Deslattes A novel small-angle x-ray camera, utilizing the Borr- mann effect in the 220 Laue reflection from germanium to form the incident beam, has been designed and tested. A test pattern of amorphous carbon showed angular resolution of 0.8 milliradian. In principle, an improvement of resolution by an order of magnitude is possible. 3 p. (Paper 68C3-161, p. 173). Experimental determination of air drag on a textile yarn

struck transversley by a high-velocity projectile, J. C. Smith, C. A. Fenstermaker, and P. J. Shouse

In recent research, rifle bullets having velocities in the range 100 m/s to 500 m/s have been shot at textile yarns, and flash photographs of the resulting configurations used as data for calculating stress-strain behavior. McCrackin [J. Research NBS 66C, 317 (1962)] has shown how air drag may affect these data and calculations. McCrackin's theory is tested here on a 93.3 tex nylon

yarn and on 26.1 tex and 124.3 tex polyester yarns. The

effect of yarn tex on air drag was found to agree with the

theory. Curvature in the yarns resulting from air drag 100
also agreed with theoretical predictions. Although curvature was noticeable in all tests, the effect of air drag on

yarn tensile stress was negligible except for the 26.1 tex polyester yarn, in which case a small correction was

necessary for accurate stress-strain calculations. 5 p. (Paper 68C3-162, p. 177). October-December 1964 Theory of mirror spectrographs I. Astigmatic illumination

of plane gratings and prisms, K. D. Mielenz By application of an eikonal theory, the image forming

properties of plane gratings and prisms are shown to be

quite similar. With uncollimated illumination, the astig- matism of both vanishes for an in-plane mounting at the minimum of deviation. Both produce perfect images if illuminated with perfectly collimated (parallel) light. In mirror spectrographs, where this requirement cannot be

fulfilled, aberrations are minimized if parallelism of rays

is achieved in the cross section normal to the grating grooves, or prism edge. 6 p. (Paper 68C4- 163, p. 195). Theory of mirror spectrographs II. General theory of focal surfaces and slit curvatures, K. D. Mielenz The focus conditions for Czerny-Turner type, twomirror spectrographs with spatial beam path are derived.

It is shown that, in general, the focal surface of the spectrograph is intermediate between the tangential and

sagittal focus. A method is developed to calculate the three-dimensional focal surface, as well as to find the curvature of long monochromator slits. 4 p. (Paper

68C4-164, p. 201). Theory of mirror spectographs III. Focal surfaces and

slit curvature of Ebert and Ebert-Fastie spectographs,

K. D. Mielenz A spatial theory of the focal surfaces and slit curves

of Ebert and Ebert-Fastie monochromators and spectro- graphs is presented.

In a second-order approximation, it yields closed ex- pressions for the focal surface, from which a "stopshift" theory is developed to study the influence of the position of the grating in the spectrograph upon the curvature of the spectrum. The condition for an extended flat spectrum is derived, and the Ebert-Fastie system is shown to be the preferable one for spectrograph design. The curvature of long monochromator slits is also de- rived as a closed, second-order expression. The Ebert

system, only, can be equipped with long slits, so that it, in turn, constitutes the superior monochromator mounting. A fourth-order approximation is also included for still more accurate computations. 9 p- (Paper 68C4-165,

p. 205). Heat flow in a right circular cylinder with arbitrary tem- perature boundary conditions— applications to the deter- mination of thermal conductivity, D. R. Flynn Expressions are developed which permit calculation of the temperature-dependent thermal conductivity of a cylindrical specimen from the experimentally determined

temperature distributions on its surfaces and from the

heat flow through a central circular area at one end of the cylinder. Numerical factors are tabulated which permit

rapid hand computation of thermal conductivity values

from experimental data for the case of axially symmetric

parabolic boundary conditions on the flat surfaces and a linear longitudinal temperature distribution on the con- vex surface. Applications to several published methods

of thermal conductivity determinations are shown and examples are given. 7 p. (Paper 68C4-166, p. 215). Digitized phasemeter, W. S. Epstein A device for measuring the phase of periodic signals

in the audio or low ultrasonic frequency range is de- scribed. The error in the measurement is independent of signal amplitude within limits, and for signals usually met in practice is less then 0.1°. The device is easy to operate. The only adjustment required is the setting of the sensitivity of an electronic' counter. Results of phase measurements are read on the counter. A way in which the measurement can be made independent of even

order har also discussed. 4

p. (Paper 68C4-167, p. 223). Active ar d passive direct-reading ratio sets for the compari son of audio-frequency admittan ces, R. D. Cutkosky

Design considerations and constr actional details for two audi o-frequency direct-reading ratio sets are pre- sented. These devices allow the comparison of admitth accuracies up to one pa t in 10 9

. The first direct-rea ding ratio set (DRRS) is bas ed upon operational

amplifier circuitry, and utilizes a two-state amplifier system. With this technique, only a moderate voltage

amplifica tion per stage is required, and the circuitry is therefore not difficult to stabilize to prevent oscillation. The second DRRS is purely passive and makes use of two-stage voltage transformers to reduce the detrimental

effects of transformer excitation current upon the lin- earity and ratio stability of the device. Equivalent cir- cuits representing the behavior of critical parts of the two direct-reading ratio sets are presented and analyzed. A convenient procedure for calibrating a DRRS is treated mathematically. 10 p. (Paper 68C4- 168, p. 227). Review of methods for the excitation of atomic and ionic spectra by means of high-frequency discharges and

sliding sparks, L. Minnhagen Two groups of excitation techniques useful for the production of ionic spectra are reviewed, namely high- frequency excitation and the sliding spark. The develop- ment of the arrangements is described and their characteristics given as regards power generation, electrodes, and spectroscopic features. The ionization stages ob- tained by each method of excitation are considered. 6 p. (Paper 68C4-169, p. 237). Standards for the calibration of g-meters 50 kHz to 45 MHz, R. N. Jones The National Bureau of Standards is now equipped to provide improved calibration services for Q-standards in the frequency range extending from 50 kHz to 45 MHz.

101
As a result of recent development work, calibration un- certainties have been reduced to magnitudes which are comparable to the resolution of g-meters in both reso- nating capacitance and g. The uncertainties in the values of the NBS standards are consistent with the best

two-terminal impedance measurements currently obtainable, but beyond this the values of the NBS standards have been statistically adjusted to provide a higher de- gree of standardization. Included in the paper is a dis- cussion of the differences between the g-meter indicated values for a standard and the effective values of the standard as given by NBS. These differences are largely due to residual immittances in the g-meter circuit and methods for evaluating these residuals are presented. 6

p. (Paper 68C4-170, p. 243). X-Ray measurement of residual strains in individual grains of polycrystalline aluminum, C. J. Newton

Shifts in peak position of 1333! and hll! diffractions

of cobalt Kotj x rays from individual grains of coarse- grained polycrystalline aluminum observed in the an- nealed condition and after 10 percent plastic extension revealed residual strains in each crystallite. These

strains, however, did not conform to the strain quadric

with a principal axis parallel to the axis of deformation, as in the case of observations from fine-grained metallic specimens that have been plastically deformed; nor was

any consistency or meaningful average trend observed in the strains of the various grains. Irregularities of loading

constraints by one grain upon its neighbors and the re- sulting great nonuniformity of deformation may account

for the absence of systematic results. 6 p. (Paper 68C4-

171, p. 249). Ferimagnetic resonance measurements using IF substitution techniques, W. E. Case, R. D. Harrington, and L.

B. Schmidt Advantages of using an IF substitution method with a waveguide below cutoff attenuator for obtaining ferrimag- netic resonance line width of polyerystalline materials

are discussed. An improvement in thelF system involving phase locking the local oscillator to the signal generator

is described. Measurements were obtained which indi- cate that the above IF attenuator method compares favor- ably with accurate frequency measuring techniques for plotting entire resonance curves. 5 p. (Paper 68C4-172,

p. 255). A Pienkowsky-type calibration scheme for 5211S1 weight

series using two knife-edge direct-reading balances,

H. S. Peiser To supplement information given in an earlier paper

(J. Res. NBS 66C (Eng. and Instr.) No. 1, 33 (1962)) a Pienkowsky-type series is presented for the calibration of a set of weights having a combined mass of 10 units and individual masses of 5, 2, 1, 1, and Si where 21 may represent a group ofweights the sum ofwhose masses

is one. The scheme includes the usual observational and computational checks, especially those against standard weights included in the series. Effects of linear balance drift are eliminated from the calibration of the unknown weights. 2 p. (P aper 68C4- 173, p. 26l).

Reference tables for the platinel II thermocouple, L. O. Olsen and P. D. Freeze A new thermocouple, Platinel II, was developed by

Engelhard Industries, Inc., for sustained operation in oxi- dizing gases at temperatures higher than those possible

with Type K thermocouples, yet having a temperature

thermal emf relation comparable to them. The need of reference tables for this thermocouple was made evident by the growing acceptance and increased usage of it. Twenty-seven thermocouples made of 20-, 30-, and 40-

mil diameter elements drawn from three separate melts of

the positive and negative alloys were calibrated. Three

equations for three temperature ranges were found to fit the averaged data of all thermocouples with a maximum

deviation of only 9 microvolts. The reference tables pre- sented were computed from these three equations. They

give emfs for each degree Celsius from -100 to 1371 °C

and for each degree Fahrenheit from -150 to 2500 °F. Usually these tables, when used in conjunction with any

typical undamaged Platinel II thermocouple, will provide temperatures which are not in error by more than 3, 5, and

10 °F at 500, 1000, and 2500 °F, respectively. Other

tables are of temperatures in both degrees C and degrees F with emf in millivolts as the argument. Tables of temperature versus emf of the two elements

of Platinel II versus Pt 27 and of copper versus the two

elements are also presented. A comparison of the thermal emf of Platinel II with that of Chromel-Alumel is shown. The two thermocouples develop identical emfs at 32, 1300, and 2225 °F. Between 1000 and 2500 °F the maxi- mum indicated difference is only 18 °F when the Chromel- Alumel reference table is used. 19 p. (Paper 68C4-174,

p. 263). Effects of cathodic currents on the corrosion of an alumi- num alloy, W. J. Schwerdtfeger A laboratory investigation was made using 6063-T5

aluminum alloy. In order to determine the most anodic

potentials of the alloy under varying conditions of pH

specimens were exposed for 6 months to 21 water- saturated soils (air free) ranging in pH from 3.4 to 10.0. The data obtained should be useful in selecting protective potentials where cathodic protection is desirable and feasible. The effects of continuously applied cathodic currents were studied by exposing the alloy for 6 months to still city water to which was added 3 percent by weight of sodium chloride. In addition, the effect of pH was ob- served by using similar salt water solutions, adjusted to pH 4 and pH 10. In each environment, cathodic and

anodic polarization data were obtained periodically on

freely corroding specimens. The cathodic data were used to choose protective potentials and together with the anodic data to calculate instantaneous rates of corrosion. The data indicate that cathodic protection is feasible, especially in the low-pH range. Cathodic corrosion oc- curred at pH 10 and can occur even at a lower pH. 14 p. (Paper 68C4-175, p. 283). Photooxidation of asphalts in the presence of ozone, J. R. Wright and P. G. Campbell The effects of ozone on the photooxidation of coating- grade asphalts were compared to those of air and of oxy- 102
gen under a variety of radiant energy conditions. Oxidative changes were measured by infrared spectroscopy and by the time to film failure as denoted by cracking. Surfaces of noncatalized asphalts were oxidized when

treated with ozone in total darkness, room light, solar

radiation, and the radiant energies of the carbon and xenon arcs. No oxidation was detected when the as- phalts were exposed to room light in oxygen alone. A

FeCl

3 -catalyzed asphalt was not oxidized by ozone in

total darkness. Photooxidation rates of all asphalts in- creased as exposures were made to carbon-arc radiation

in air, in oxygen, and in ozone-enriched oxygen. Each

asphalt exhibited a different oxidative response to solar, xenon-arc, and carbon-arc radiant energy sources. 8 p. (Paper 68C4-176, p. 297). Designs for temperature and temperature gradient compensated capacitors smaller than ten picofarads, R. D. Cutkosky A theoretical study is made of the dependence of capacitance upon electrode temperature in an air dielectric capacitor. The possibility of constructing a three- terminal standard whose capacitance depends only upon

the temperature of one electrode is pointed out, and some practical capacitors utilizing the principle are described. The temperature sensitive electrodes of these capacitors are constructed of fused silica, which

results in temperature coefficients of capacitance near

0.5 ppm/°C. The temperature independent electrodes of these capacitors may be constructed of any stable metal,

facilitating adjustment to nominal value. 3 p. (Paper 68C4-177, p. 305). TITLE PAGE AND CONTENTS TO VOL. 68. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SECTION

C. ENGINEERING AND INSTRUMENTATION, VOL- UME 69, JANUARY-DECEMBER 1965

January-March 1965 Two picnometers of increased convenience and precision,

A. Johnson Two picnometer designs that provide increased con- venience and precision in the determination of' the density

of liquids are discussed. Both designs provide ready access to the capillary tubes and reservoir area, thus

facilitating the removal of excess liquid and setting of the liquid level. The standard deviation of a series of

calibrations witn water using the earlier of these de- vices, the Collett picnometer, was 0.001 ml to 0.002 ml over the range 5 to 70° C; with a Collett picnometer

recently modified by the author and presently usable

only above room temperature, the standard deviation was

0.000 2 ml to 0.0005 ml over the range 40 to 50° C. (The

weighing procedure used to calibrate the author's pic- nometer differed from that used with the Collett pic- nometer.) These data apply to picnometers of 50 to 70 ml internal volume. 4 p. (Paper 69C 1-178, p. 1). Construction of a Michelson interferometer for Fourier spectroscopy, H. N. Rundle The properties of the method employing a double beam

interferometer for Fourier spectroscopy are briefly presented. A Michelson interferometer is described which

is suitable for use in Fourier spectroscopy in the 1 to 10 micron region. The instrument can be used at any resolv- ing power up to about 10 5

. 7 p. (Paper 69C1-179, p. 5). The National Bureau of Standards gas thermometer II. Measurement of capacitance to a grounded surface with

a transformer ratio-arm bridge, L. A. Guildner and R. E. Edsinger A modification of the conventional transformer ratio- arm capacitance bridge was made to measure the values

of three-lead capacitors having one of the plates grounded.

With this ground point it is necessary to use triaxial cable with solid shields. A troublesome capacitance

coupling between the primary and secondary shields of the transformer was neutralized by means which still en- able one to attain the extremely high precision and ac- curacy characteristic of this type of bridge. The modified bridge was developed initially for highly accurate

determinations of the locations of the grounded mercury

menisci of the National Bureau of Standards precision manometer. Other applications are readily thought of and one interesting example is presented. 5 p. (Paper 69C1-180, p. 13). An adiabatic calorimeter for the range, 10 to 360° K,

K. F. Sterrett, D. H. Blackburn, A. B. Bestul, S. S. Chang, and J. Horman A low temperature adiabatic calorimeter and cryostat assembly is described for measuring heat capacities in the temperature range 10 to 360° K. A combination of Dewar and tank system is used as refrigerant containers. The temperature of the adiabatic shield is automatically

controlled to within a millidegree of that of the calori- meter vessel. This apparatus offers facilities for rapid cooling to about 50° K and long term adiabatic control

for conditioning of a sample and, thus, is especially

suitable for measurements on glass, where long equili- bration time is sometimes involved. Data on the empty calorimeter vessel and on the Calorimetry Conference standard sample of synthetic sapphire are presented as a measure of the precision and

the accuracy of the apparatus. 8 p. (Paper 69C 1-181,

p. 19). A rugged null-type pressure transducer of high reproducibility for accurate gas phase PVT measurements, M. Waxman and W. T. Chen A rugged and highly reproducible null-type transducer

for accurately determining the equilibrium pressure be- tween a Burnett PVT apparatus for gases and a counter- balancing pressure system is described. The transducer, closely coupled to the PVT sample volume, is used at temperatures from 0 to 175° C and over the pressure

range 4 to 250 atm. The transducer basically consists

of a metallic diaphragm as the pressure responsive ele- ment, a stable capacitance sensor for detecting minute

deflections of the diaphragm, and spherical concave

backing surfaces with a sagitta of 0.001 in. and a chord

of 0.937 in. for supporting the diaphragm against excessive pressure imbalances. The diaphragm is 0.001 in. thick, plane circular with an effective deflection diameter

of 0.937 in., and prestressed to reduce appreciably in- 103
in the

elastic factors. The reproducibility of the null after the transducer has been subjected to unidirectional pressure

overloads as large as 135 atm is within ±0.1 mm Hg.

For pressure imbalances less than 1 atm and transducer pressures of 1 atm or less, the reproducibility is within 9xl0~3 mm Hg, which is the equivalent resolution of the capacitance circuitry. The maximum uncertainty

null for transducer pressures varying from 4 to 250

is, respectively, 0.003 to 0.00 04 percent. The i uncertainty in the constancy of the transducer volume is 7xl0 -5 cm

3 and contributes a maximum error of 0.0003

percent in the constancy of the sample PVT volume.

General requirements, design considerations, and factors which limit the i eproducibility of the transducer null are discussed. Detailed performance data at 25° C are

given. 7 p. (Paper 69C1-182, p. 27). and damping of the: nal-acoustic oscill

;nts, D. A. Ditma:

The spontaneous thermal-acoustic oscillations in nonisothermal columns of helium, hydrogen, nitrogen,

argon, and oxygen gas have been investigated. The

pressure fluctuations were measured with a barium

titanate transducer and the particle displacements ob- served by a smoke technique. The observed pressure

oscillations were often nonsymmetrical and of sufficient amplitude to indicate the necessity for a nonlinear ap- proach in a theoretical treatment of the oscillations. An

adjustable "Helmholtz resonator" attached at the warm

end of the oscillating column was found to damp completely the oscillations and eliminate the energy transfer which they caused. 4 p. (Paper 69C 1-183, p. 35). NBS free-air chamber for measurement of 10 to 60 kV

x rays, P. J. Lamperti and H. O. Wyckoff

Constructional details of the National Bureau of Standards' new free-air chamber for the measurement of

10 to 60 kV x rays in roentgens are given. The results

of the comparisons of the new chamber with the National Bureau of Standards' "low" energy standard in their overlapping range are included. The two standard chambers, on the average, agreed to within 0.3 percent. The maximum uncertainties in the correction factors used

for the comparison measurements are examined and their sum is compared with the results obtained for the chamber comparisons. An estimate is also made of the maximum uncertainty, about 1.3 percent, of an exposure

rate determination to be expected when using the 10 to 60 kV chamber to measure 10 to 15 kV x rays. 9 p. (Paper 69C1-184, p. 39). A compensated solenoid giving a uniform magnetic field over a large volume, C. Snow and R. L. Driscoll The magnetic field anywhere inside a iong solenoid

with two symmetrically placed auxiliary windings is ex- pressed in terms of zonal harmonics. Formulas are given that enable one to compute the size and position

of the auxiliary windings that made the field most uniform

at points in the neighborhood of the center of the sole- noid. 6 p. (Paper 69C1-185, p. 49).

Evaluation of a mil D. A. Ellerbruch The best phase measurement sensitivity and' accuracy

are attained in a dual-channel balanced bridge type system. Two similar dual-channel systems are discussed in this report; these being the homodyne system and the modulated subcarrier. Both require low-frequency ampli- tude modulation in one of the channels; however, the homodyne system uses a balanced modulator. The dif- ference in system theory due to the amplitude modulation

difference is discussed, and the advantages of each are pointed out. The standard phase shifter considered for these sys- tems consists of a modified reflectometer terminated in a

sliding short circuit. The requirements for a noncontacting short circuit are established, and its theoretical and

experimental design data are given. An error analysis is included, so the total error for any given system can quickly be determined. The maximum error can be derived by calculating the limits of the individual errors and adding them together. Equip- ments and tuning techniques that have been developed to reduce many errors to a minimum are discussed.

It is shown that either of these measurement systems

are readily adaptable to automation. Samples of phase

data that were taken from a few commercial components

are included, lip. (Paper 69C1-186, p. 55). Polarogr

Applicai Cadoff

iphi< is of tit

t pigmei

inium (IV)-EDTA complex:

ts, H. W. Berger and B. C. The Ti +4-EDTA complex, buffered at pH 4.7, has been

found to give polarographic waves suitable for the analysis of TiG"

2 in paint pigments. A linear relationship between diffusion current and concentration of Ti for the range 2.8xl0 _s

to 8.4xl0~3 M has been observed. The pigments analyzed have been either in the dry form

or extracted from whole paint. The method gives results

in good agreement with the more complicated and time- consuming standard wet chemical method. 4 p. (Paper

69C1-187, p. 67).

Soil resistivity as related to underground corrosion and

cathodic protection, W. J. Schwerdtfeger

Corrosion data discussed in this paper are based upon measurements made on about 4500 specimens of com- monly used plain wrought ferrous materials which had

been buried in back-filled trenches at 86 National Bureau

of Standards sites for periods up to 17 years. The soils ranged in resistivity from 50 to 54,000 Q-cm and in pH

from 2.6 to 10.2. Maximum pit depths at 5 years of exposure are taken

from pit depth-time curves and the curves are also extrapolated to probable pit depths at 30 years for each

of the 86 sites. Furthermore, data on the specimens are adjusted to maximum pit depths that might be expected on a larger area, equivalent to that of the exterior surface

of a 20 ft length of 8 in. uncoated wrought ferrous pipe. Maximum penetration rates and pit depths are presented

with respect to soil resistivity and pH. Weight losses which resulted from about 2 years of underground exposure are converted to corrosion current 104
densities and after this | ties are calculated from curves for each site. On

current to corrosion cu curves on steel specirru the laboratory, the con

adjusted to approximate

cathodic protection. 7 p.

riod of exposure current densi-

:he slopes of weight loss-time he basis of ratios of protective

ent obtained from polarization

s underground and in soils in sion current densities can be

urrent densities necessary for (Paper 69-C1-188, p. 71).

Temperatures of thermocouple reference junctions in an

ice bath, F. R. Caldwell

Errors obtained when using several sizes of ISA Type K thermocouple wires (14 to 20 AWG) and of copper lead

wires (14 to 26 AWG) at different immersions in a properly prepared and maintained ice bath are given. Variables considered include in addition to the wire diameters and

Analysis of a practical circuit shows that such an instru- ment is potentially capable of measuring conductance to within a few parts in 10 6 at frequencies below about 15 MHz, and that accuracies actually obtained will be limited only by the accuracy to which changes in effective capacitance are known. Conductances between 0.01 and

0.0001 mho were measured at 10 7 radians/sec with an estimated error of 0.05 percent, which is the error asso- ciated with the measurement of changes in effective capacitance at that frequency. 12 p. (Paper 69C2-191,

p. 115).

irials, depth of 9 in.), solid cross

section of the Pyrex junction tubes, and type of insulation on the copper le•ad wires. The wires studied reprethe maximum (copper) and the minimum (Chromel)

th ennal conductiviti es of any of the normally used

thennocouple wires. A small amount of data on platinum

is included. Depth of immersion and diameter of the coppei

are extremely important if a high degree of accuracy be attained. The solid cross section of the Pyrex

tion tubes and type of insulation used are of 1 importance. 7 p. (P aper 69C2- 189, p. 95). Superimposed birefr£ Waxier

tory plates, L. H. Adai ind R. M. A study is involved in

light through plates havin; tween their necessary foi polarized producing ci presented in that the ' 'c striking si mi plates can b( half-shades.

ide of the relations among the pai of plane-polarizi

pair passage

of birefractory plates,

> known phase 1 principal axes, the a

r a plane-polarized bea

determined. In addition

rcularly polarized light a simple and convenien

i known ang

of nclii

l to emerge plan

the conditions f< are developed ar quarter-wave plate shows

larky in several respects, to the ordina

plate. It is shown how the "combinatiot used to construct several novel polarimeti

12 p. (Paper 69C2-190, p. 103).

Exact inductance equatic with applications to i C. Hoer and C. Love

fo : rectangular conductors complicated geometries,

Exact equations are given for the calculation of the self-inductance of rectangular conductors and of the mutual inductance between combinations of parallel fila- ments, thin tapes and rectangular conductors. A general procedure is also given for calculating the self-inductance

of complicated geometries by dividing the geometry into simple elements whose inductances can be calculated. This general procedure is valid for conductors having

nonuniform, as well as uniform current densities. 11 p. (Paper 69C2-192, p. 177). Common v Hubbell

of

The rolui

intersecting cylinders, J. H.

two cylinders of radii

3 found to ber3

2 v(i),

j8, where k = r /r

a and v(k) may be evaluated (1) as hypergeometric series

the

2rrk 2

2 F Y2 ; 2; k

2

) = 4> SOW*

(2) as

(8/3)[(l he combination of complete elliptic -k 2 )E(k)-(l - k

2 )K(k)] or (3) as the

kE(k)dk.

A self-calibrating instrument for measuring conductance

at radio frequencies, L. E. Huntley Accuracies obtainable in measuring resistance (con- ductance) at radio frequencies have lagged behind those

obtainable in measuring reactance (susceptance), because

frequency-dependent changes in the values of resistors

are not as well known as are such changes in capacitors, and because no satisfactory method has existed for comparing resistors to capacitors at radio frequencies. An

instrument based on the twin T null circuit can be made

self-calibrating at a given frequency, allowing con- ductances in the proper range to be measured directly in terms of a change in capacitance, without any need for accurate knowledge of the values of the circuit elements.

A table of v(k) to 8 decimals over the range 0 -£(0.01)

< 1.00, including modified second central differences,

is presented. This volume integral was useful in inter- preting a gamma-ray albedo experiment involving a colli- mated source and a collimated detector, and may also be

applicable to crossed-beam

useful for k close to unity are provided, volves differencing against the series Two series

of which i ""-?(!)(.-,)

5 p. (Paper 69C2-193, p. 139). Steady-state heat conduction in an exposed exterior col- umn of rectangular cross section, B. A. Peavy

This paper presents a mathematical analysis of two- dimensional steady-state heat conduction in a solid of 105
rectangular cross section, two parallel surfaces of which

are exposed to separate temperature environments with respective surface heat transfer coefficients. For the other two parallel surfaces, the temperature environment and surface heat transfer coefficients are assumed to vary as a function of position on these surfaces. A parti- cular application of this analysis has been to determine

the temperature distribution in a transverse cross section of exposed concrete columns. 7 p. (Paper 69C2-

194, p. 145).

July-September 1965 Two-terminal dielectric measurements up to 6 x 108 Hz,

M. G. Broadhurst and A. J. Bur A two-terminal dielectric specimen holder has been

constructed and used to make dielectric constant and

loss measurements on a single disk specimen at room

temperature over a frequency range from 1CT 2 to 6 x 10 8 Hz. The measurement procedures are outlined and a detailed analysis of the working equations and measure- ment errors is presented. 8 p. (Paper 69C3-195, p. 165). Improved ten-picofarad fused silica dielectric capacitor, R. D. Cutkosky and L. H. Lee

Some defects in a set of fused silica dielectric capacitors constructed in 1961 are listed, and methods for their reduction or elimination are described. The construction

of a new set of capacitors completed in 1964 is described

in detail. Preliminary stability data presented indicate

that the typical drift of the 1964 capacitors with respect

to their mean was less than two parts in 10 7 in five months. 7 p. (Paper 69C3- 196, p. 173). Errors in the series-parallel buildup of four-terminal re- sistors, C. H. Page The use of n equal resistors (a) in series and (b) in parallel provides an n

2 :l ratio of potentially high ac- curacy. Such devices are important for extending the use

of the national one-ohm standard to the hundred-ohm, and

thence to the 10,000-ohm, level. Formulas are derived for the error in the ratio, ex- pressed (a) in terms of design tolerance, and (b) in terms

of first-order residual misadjustments which combine to yield the second-order error of the ratio.

It seems feasible to construct a 1:100 ohm buildup de- vice with a ratio uncertainty of less than 1 in 10 8

. 9 p. (Paper 69C3-197, p. 181). Centerable rotator for measuring properties of crystals, C. P. Saylor and H. B. Lowey

By allowing the unsupported portion of a spindle to be

relatively long so as to extend from the rim of the micro- scope stage all the way to the axis, simple controls can

be provided for centering a crystal with respect to a hori- zontal axis of rotation. In the device which is described,

centration can be assured within about a micron. The

angle of rotation with respect to a fixed position can be

read with an error not greater than 0.05 degree. 3 p. (Paper 69C3-198, p. 191).

Equipment for single-crystal growth from the melt suit- able for substances with a low melting point, A. T. Horton and A. R. Glasgow

Glass apparatus is described for the purification and

growth of drystals with melting points up to about 130 °C

by a modified Bridgman technique. The temperatures of

the melt and the solid are maintained by two immiscible

liquids at whose interface a sharp temperature drop

exists. A sealed Pyrex tube containing the specimen is slowly lowered through the interface. The specimen is maintained under its own vapor pressure in contact only

with the glass container. Provision is made for the re- moval of the last portions of the specimen to solidify from each of several successive recrystallizations. The equipment has been found effective for the purifi- cation of /ra?2s-stilbene, dimethyl oxalate, benzoic acid, and benzene. It could also be used for careful studies

of thermal and radiation stability of pure substances.

4 p. (Paper 69C3-199, p. 195). Phase and amplitude contrast microscopy in partially coherent light, M. De and P. K. Mondal

This paper describes the effects obtained in phase

contrast imagery with partially coherent illumination of phase objects. The objects chosen for study include simple Zernike type of periodic phase gratings of the

form (i) A(u) = 1 x i A • cos au and (ii) A{u) = 1 x i An

• cos ncou, with axial or oblique partially coherent

illumination. The concept of "effective source" has

been utilized, and the nonlinearity in the intensity trans- mission due to partial coherence has been analyzed in terms of "fundamental contrast" and "remnant." 14 p. (Paper 69C3-200, p. 199). Exposure time relations for Kossel microdiffraction photo- graphs, H. Yakowitz and D. L. Vieth The exposure time for a Kossel photograph may vary

from a few seconds to a few hours. Therefore, it is desirable to be able to estimate the exposure time for vari- ous experimental conditions. Hence, semiempirical re- lations for the exposure time of a Kossel microdiffraction

pattern have been developed. Equations are presented

for both transmission and back reflection Kossel photo- graphs. These equations are tested for validity using two different commercially available x-ray films. It is shown that the agreement of actual exposure times with predicted exposure times is valid within 10 to 15 percent. 4 p. (Paper 69C3-201, p. 213). Cartesian diver as a density comparator, H. A. Bowman

and R. M. Schoonover A hydrostatic weighing system is described that pro- vides independent values of apparent mass with a standard deviation of about 0.2 microgram. The definition of "independent" used here includes the requirement that the sample under observation be removed from the water,

dried, and recleaned between measurements. This pre- cision is between one and two orders better than exist- ing hydrostatic balances, and permits high-quality density 106
measurements without recourse to large sample sizes. The system is used as a comparator, hence the absolute accuracy of results can be no better than that of the standards used. Data are presented which are taken dur- ing experiments on two 2-gram pieces of single crystal

silicon, and the standard deviation in density of a single determination was computed to be 4.4 x 10~ 7 g/cm3 (0.22 ppm). The system is particularly well suited to detection of

slight density changes in small size samples. In this service, it is not subject to the requirement for high ac- curacy standards. Data are reported on density changes

of about 50 ppm that occurred in a 250 milligram ceramic

crystal. Two independent determinations on this change

differed by only 7 percent. 7 p. (Paper 69C3-202, p. 217). Cryogenic behavior of selected magnetic materials, J. J. Gniewek and E. Ploge Measurements of a-c core loss and d-c magnetic properties including coercive force, residual induction, and

hysteresis loss are reported at temperatures of 273, 195, 76, and 4 °K for a variety of commercial magnetic Fe-Si and Fe-48 percent Ni alloys. Of the materials tested the high silicon content (3 to 4.45 percent Si) Fe-Si alloys were found to be the least temperature sensitive. Hysteresis loss increases between 273 and 4 °K of up to 100 percent were measured for the iron-nickel materials. 12

p. (Paper 69C3- 203, p. 225).

Some applications of the wave front shearing interfero- meter, J. B. Saunders This paper gives the results of several applications of

the wave front shearing prism interferometer. The in- strument is very compact and easy to apply. It is applied

to the testing of chromatic aberration of simple and com- pound lenses; and to the testing of wave forms that characterize the monochromatic aberrations (spherical, coma, and astigmatism). Results are shown for several

different type lenses. This interferometer is equally applicable to the testing of small lenses and large telescope objectives.

:sting of lenses, lens aber- interferometer, chromatic

;es. 5 p. (Paper 69C4-204,

y aberrations or

J. B. Saunders

Key Words: Interferometer,

rations, prism

aberration of le

p. 245). Precision method for evaluating prin lenses with a Twyman interferomei A simplified procedure for separate evaluation of the three primary aberrations of lenses with the Twyman lens

testing interferometer is described. Each of the aberration coefficients is found to be a function of observations at only four points on the lens. Equations are given for the optimum choice of reference points that give best results. These equations are applied to data pre- viously reported in the literature. The results indicate

that this procedure is sufficiently precise to reveal high

order aberrations in a lens that was assumed to be

practically free from such aberrations.

Key Words: Interferometer, lens testing, Twyman inter- ferometer. 5 p. (Paper 69C4-205, p. 251). Comparators for voltage transformer calibrations at NBS,

W. C. Sze An inductive comparator is described for measuring

ratio-correction-factor and phase-angle error of voltage

transformers by comparison with reference transformers. The simple circuit utilizes a resistance-capacitance net- work and an inductive voltage divider. The relative magnitude of the ratio-correction-factors is obtained from

the dial readings of the inductive voltage divider, and

the phase angle between the voltage phasors is equal to ±&jCR. The accuracy of these measurements at 60 and

400 hertz is within 2 parts-per-million for ratio and within

10 microradians for phase angle at the limits of the phase- angle range of ±38 milliradians. Only a few

ranges of reference transformers are required since

fractional ratios from l/l to 1/4 may be measured as

readily as ratios near unity, without diminution in ac- curacy. A general discussion of a resistive comparator, which has been in continuous operation at NBS since

1939, is included. Key Words: Voltage divider, inductive voltage divider, resistive voltage divider, voltage transformer

calibration, ratio-correction-factor, phaseangle errors, voltage transformer comparator,

voltage-transformer-test-set, comparator,

test-set, calibration. 7 p. (Paper 69C4-

206, p. 257). Voltage dependence of pre Shields

ritors, J. Q.

Methods are presented for measuring both the relative and absolute voltage dependence of admittance standards. The practical circuits based on the methods are com- posed of precision bridges which are described in detail. Measurements with these circuits yield values for the proportional changes in admittance which result from

specified changes in voltage. The results of measure- ments on selected capacitors are presented. Uncertainties are of the order of one part in 10 9

. A general instability in the voltage dependence of

precision air capacitors was observed at the higher accuracy levels. Most of the instability is believed to be caused by changes in the electrode surfaces. Key Words: Bridge, capacitor, coaxial choke, difference

transformer, electrode surfaces, thin films, three-terminal, transformer, voltage coeffi- cient, voltage dependence, voltage ratio. 10

p. (Paper 69C4-207, p. 265). Single-crystal x-ray diffraction at high pressures, C. Weir,

S. Block, and G. Piermarini Construction and operation of a high-pressure singlecrystal x-ray diffraction precession camera is described. The instrument appears applicable to single crystal studies to pressures as high as at least 30 kilobars and

temperatures of at least 250° C. Application of the in- strument is illustrated by single crystal studies of ice 1U7
VI and ice VII. Unit cell parameters are given for these two forms of ice. Further modifications and applications

are discussed. Key Words: High pressure, single crystal, x-ray diffraction, ice VI, ice VII, water, calcite. 7 p. (Paper 69C4-208, p. 2 75). The Sondheimer-Wilson-Kohler formula in platinum resist- ance thermometry, R. J. Corruccini An attempt was made to determine the ideal resistivity versus temperature function for platinum by a parametervariation method using the Sondheimer-Wilson-Kohler

formula for the deviation from Matthiessen's rule. At the same time a test of the applicability of the SWK formula

for practical thermometry was made by examining the accuracy with which it could fit the resistance-temperature

functions of selected thermometers, the characteristics

of which were restricted in a manner believed to favor

their accurate representation. No ideal resistivity function could be found such that most of the thermometers

could be accurately represented. Key Words: Cryogenic, electrical resistivity, low temperature, platinum, resistance thermometry,

temperature measurement, thermometry. 4 p. (Paper 69C4-209, p. 283). Stress analysis of tape- wound magnet coils, J. Hord A liquid hydrogen cooled, tape-wound, axially seg- mented, high-purity aluminum electromagnet has been

built and tested to 95 kilogauss with a magnet power

consumption of 22 kilowatts. Formulae for the axial, radial, and circumferential stress components in this type

coil are derived under the assumptions of isotropy and

homogeneity. Both plane strain and plane stress analy- ses are given. The hoop stress is also derived from the "floating shell" concept using thin shell theory. The

formulae from these analyses and thick- wall cylinder theory are used to calculate the hoop stresses in the experimental coil, and the results are presented for comparison. The theoretical burst field of a monolithic

cylindrical coil disk is derived. Key Words: Axial stress, burst field, circumferential

stress, cryogenic electromagnets, electro- magnets, magnetic body forces, magnetic

field, plane strain, plane stress. 16 p. (Paper 69C4-210, p. 287). Centerline correction for precision roughness specimens,

J. L. Chamberlin

In graphic determinations of roughness height (a measure of surface texture) a specific centerline about which

the total area is measured is required. The first approxi- mation of the position of this centerline is subjective and

a repositioning was generally required. Here presented

is a method for determining the roughness height without

resorting to an additional area measurement. Key Words: Centerline corrections, precision roughness

specimens, roughness height. 3 p. (Paper 69C4-211, p. 303).

Electric currents and potentials resulting from the flow

of charged liquid hydrocarbons through short pipes,

M. R. Shafer, D. W. Baker, and K. R. Benson The electrical currents and potentials produced in pipes of intermediate and very high resistivities, by the flow of a charged liquid hydrocarbon has been investigated. The maximum pipe currents to the ground were

in the range 1 to 6 microamperes. Depending upon the

electrical resistance of the pipes, these currents pro- duced potentials ranging from essentially zero to values

in excess of 30,000 volts which were sufficiently severe

to cause electrical breakdown and arcs within some of

the pipes under investigation. It is concluded that hazardous pipe potentials, resulting from static electricity, can be eliminated in practical applications if the

electrical resistance from each and any portion of the

interior surface of the pipe to the ground does not exceed

about 10 7 ohms. Key Words: Breakdown, charged liquid hydrocarbons,

charging tendency, charge separation, current, filters, inner liner, petroleum liquids, potential, relaxation, resistance, static

electricity, tetrafluoroethylene tubing. 11 p. (Paper 69C4-212, p. 307). A transistor screening procedure using leakage current measurements, G. T. Conrad, Jr., and D. C. Shook A study of the aging behavior of low-power germanium

alloy switching transistors has revealed a relationship between small changes in junction leakage current, in- duced by a brief aging stress, and later deterioration in performance. This relationship may provide the basis

for a nondestructive screening procedure which would

serve to identify germanium alloy transistors likely to deteriorate through excessive growth of junction leakage

current. The proposed screening procedure involves the determination of relatively small changes in junction leakage current, increases of the order of 15 percent or more, associated with 1,000 hours of aging at a shelf (bake) stress of 100° C. Because the leakage current changes of interest are small, relatively high demands

are placed upon measurement repeatability. There is evidence that transistors bearing identical type numbers

but of different manufacture respond differently to the same screening procedures and would therefore require

different screening limits. Key Words: Aging behavior, alloy transistors, failure prediction, leakage current, screening pro- cedures, temperature stress, transistor, transistor screening. 12 p. (Paper 69C4-

213, p. 319). TITLE PAGE AND CONTENTS TO VOL. 69. 4 p. PAPERS FROM THE JOURNAL OF RESEARCH OF

THE NATIONAL BUREAU OF STANDARDS, SEC- TION C. ENGINEERING AND INSTRUMENTATION, VOLUME 70, JANUARY- JUNE 1966

Coulometric calibration of microvolumetric apparatus, G. Marinenko and J. K. Taylor Coulometrrc titration provides a simple and accurate means to calibrate microvolumetric apparatus such as
burets, micropipets, and syringes. The apparatus to be

calibrated is caused to deliver a solution of known con- centration into an electrolysis cell where it is analyzed

coulometrically. By the method described, volumes rang- ing from 300 to 1 /d have been calibrated with relative standard deviation of 0.03 to 3 percent, respectively. Key Words: Const ant- current coulometry, microburet

calibrations, volume calibrations. 3 p. (Paper 70C1-214, p. 1). Effect of temperature and notch geometry on the tensile behavior of a titanium alloy, W. D. Jenkins and W. A. Willard A comprehensive study was made of the effects of notch geometry on the mechanical behavior of a duplex- annealed titanium-8 aluminum- 1 molybdenum- 1 vanadium

alloy within the temperature range 75 to 1200 °F (297 to 921 °K). Yield strength, tensile strength, and true stress at fracture increased with increase in notch depth and decrease in notch angle and temperature. The maxi- mum strength (tensile and yield) properties were obtained

for the cylindrical specimens having a root radius of 0.01-inch. Generally, the increase in tensile properties was accompanied by a decrease in reduction of area val- ues. The micro structures and the initiation and propagation of fracture of the specimens were affected by the notch geometry and test temperature. Key Words: Notch geometry, tensile behavior, elevated

temperature, titanium alloys, fracture, stress concentration, notch strength. 7 p. (Paper 70C1-215, p. 5). Measurement standards for low and medium peak pulse

voltages, A. R. Ondrejka and P. A. Hudson Two systems for the measurement and standardization

of peak pulse voltage have recently been developed in the Radio Standards Engineering Division of the National Bureau of Standards. Designed for use with pulses having durations as short as 10 nanoseconds, the sys- tems represent the initial effort by NBS for establish- ment of standards in this field and it is expected that they will serve as the basis for a calibration service. One of the systems is a refined, slideback voltmeter employing a solid state diode. The rise time is less

than 10 nanoseconds and the instrument is useful for measurements in the range 5V to 100V as presently

constructed. The second system standardizes the output peak volt- age level of pulse generators by means of cascaded

zener diodes. The clipping level of the diodes is de- termined first by d-c voltage measurements and the sys- tem is subsequently used to generate pulses of known

peak amplitudes. The rise time of the diodes is approxi- mately 30 nanoseconds. The accuracy of both systems is within 0.25 percent, and comparison measurements have been made between

the two, and with other NBS a-c and rf (CW) voltage Key Words: Measurement, peak, pulse, pulse-limiting, slideback, standard, voltage. 6 p. (Paper

70C1-216, p. 13). 10

Tempecature coefficent of RF permeability measurement

using an impedance bridge as an equality indicating device, A. L. Rasmussen

Measurements are made on toroidal coils, without and

with low-loss powdered iron samples inside, from approxi- mately 23 to 50 °C and 300 kHz to 1.5 MHz. A high- precision Maxwell impedance bridge is used as an

equality indicating device. Impedance changes of the

toroidal coils are compensated by adjusting parallel ca- pacitance and resistance standards which are external to the bridge. Data on several materials show that temperature coefficients of permeability of approximately 5 x 10- 6 /°C may be evaluated. Key Words: Equality indicating device, magnetic materials, Maxwell bridge, powdered iron materials, rf permeability, temperature coefficient, toroidal coils. 6 p. (Paper 70C 1-2 17, p. 19). A test apparatus for the study of forced air-mixing de- vices, T. K. Faison, J. C. Davis, and P. R. Achenbach The National Bureau of Standards has initiated a study

of mixing devices for air streams to improve the tech- niques for measuring the capacity of air-conditioning, heating, and refrigeration equipment. Better mixers in these test apparatus will reduce the amount of instru- mentation required, and increase the accuracy in capacity determinations that are based on enthalpy change of the

air passing through the equipment. An apparatus for measuring the effectiveness of mixing devices, a small- scale apparatus for visually observing the mixing proc- ess, and some illustrative results are presented. The

apparatus for measuring mixer effectivensss generates a stream of moving air of known and reproducible nonuniformity of temperature or humidity, provides for the in- stallation of one or more mixers in a measuring section, and incorporates the means for measuring static pressure,

velocity pressure, temperature, and humidity upstream and downstream of the mixer. The flow-visualization apparatus provides a qualitative visual evaluation of the effectiveness of small-scale models of mixers as a basis

for selecting the specimens for the more elaborate measurements. Graphic material is included which illustrates the performance of the apparatus and the methods used

in determining effectiveness of mixing devices. Key Words: Air-conditioning capacity, air-mixing de- vices, forced air-mixing, turbulence, mixer

effectiveness, apparatus design, air properties, temperature measurement. 7 p. (Paper 70C1-218, p. 25).

April-June 1966 Design and statistical procedures for the evaluation of an automatic gamma-ray point-source calibrator, S. B. Garfinkel, W. B. Mann, and W. J. Youden A description is given of the mechanical design and

operation of an automatic gamma-ray point source

calibrator. The use of statistical design in experiments for evaluating performance factors, such as interchangeability of
stations and run differences using the same data .obtained

in comparisons of the sources, is described in detail. Key Words: Statistical experiment design, testing equip- ment, routine testing, radioactivity stand- ardization measurements, gamma-ray point sources, lip. (Paper 70C2-219, p. 53). Testing of lenses with the wave front reversing inter- ferometer, K. Muraoka The data obtained with a reversing interferometer may

be applied to the optical path difference equation for evaluating the aberration constants of a lens. This

paper gives the development of optical path difference equations for the reversing interferometer. These equations are applied to results obtained with two lenses and

a comparison is made of values from the interferometer, geometrical measurements, and theoretical computation. The interferometer is also applied to the measurement

of chromatic aberration. Some data are included for comparison of the interferometer results with those obtained by other methods. The advantages of the wave front reversing interfer- ometer are (a) It can be adjusted to show the effects

either of spherical aberration or coma separately and in- dependently of astigmatism even though they all exist

together; (b) the size of the reversing interferometer ele- ment is independent of the size of the lens to be tested;

(c) the adjustments are easier than those of the Twyman

type; and (d) the fringes are less vulnerable to vibration

effects than most other interferometers. Key Words: Aberration, interferometry, lens testing, mirror testing. 10 p. (Paper 70C2-220, p. 65). Ellipsoidal mirror reflectometer, S. T. Dunn, J. C. Rich- mond, and J. A. Wiebelt A new ellipsoidal mirror reflectometer is described, in which radiant flux from an infrared monochromator is fo- cused on a specimen placed at the first focal point of the elipsoid and a thermopile detector is placed at the sec- ond. Errors associated with angular and areal variations

in sensitivity of the detector and with aberrations in the optics were largely eliminated through use of a small averaging sphere placed over the detector. Losses caused

by the presence of the entrance hole in the ellipsoidal

mirror and from mirror absorption were evaluated both

theoretically and experimentally. Corrections for these losses permitted absolute reflectance to be obtained for both diffuse and partially diffuse reflecting specimens.

In addition, the unique optics of the ellipsoidal mirror provide more versatility than is available in previous re- flectometers. This versatility includes the ability to ac- curately measure directional-hemispherical, specular, nonspecular, and directional-annular cone reflectance. An analysis of the accuracy of the instrument indicates

that an accuracy of better than one percent is possible

for all engineering materials. The use of the sulfur aver- aging sphere also allowed the construction of a simple

accurate specular reflectometer for calibration of the mirror reference standards used in these measurements. Key Words: Averaging spheres, bidirectional reflectance, diffuse reflectance, ellipsoidal reflectometer, infrared, infrared detectors, reflectance,

reflectometer, spatial sensitivity, spectral reflectance, specular reflectance. 14 p. (Paper 70C2-221, p. 75). Reference tables for the Pt-30 percent Rh versus Pt-6

percent Rh thermocouple, G. W. Burns and J. S. Gallagher Reference tables for the platinum-30 percent rhodium

versus platinum-6 percent rhodium thermocouple have

been established for the range 0 to 1820 °C based upon

the calibrations of thermocouples furnished by three manufacturers in the United States and by one European manufacturer. The thermocouples were calibrated by comparison with standard instruments such as platinum

resistance thermometers, platinum- 10 percent rhodium versus platinum thermocouples and optical pyrometers. The test procedures and facilities used for the calibra- tions are described and the accuracy of the measure- ments is discussed. The platinum-rhodium elements of

the thermocouples were examined by a general qualitative spectrochemical method and the results of the anal- yses are given. Tables of emf of the individual elements

of the thermocouple versus Pt-27 for the range 0 to 1500 °C are also presented. In addition, the effect of varia- tions in the alloying percentages of platinum and rhodium on the temperature-emf relationships of the elements are shown. The results of calibrations for other Pt-30 per- cent Rh versus Pt-6 percent Rh thermocouples, which

were received for routine calibration at NBS during the period from May 1963 to March 1965, are also shown. Key Words: Accuracy, calibration, emf, platinum- rhodium elements, platinum-30 percent rho- dium versus platinum-6 percent rhodium, ref- erence tables, spectrochemical analyses, thermocouple. 37 p. (Paper 70C2-222,p. 89). Coaxial power meter calibration using a waveguide standard, G. F. Engen The techniques associated with the calibration of one

terminating type power meter in terms of a second termi- nating meter are useful both in calibration measurements

and in the practical application of such devices. These

techniques assume a variety of forms and represent an important segment of the microwave art. However their application to the calibration transfer problem between power meters with different input waveguides has long been inhibited by the requirement for an adaptor and the uncertainty which its losses can introduce into the procedure. This paper describes a method of extending these ex- isting techniques to this more general problem, in which

the adaptor losses are only a second order, effect. In addition, it provides limits for the error which is thus

introduced. Key Words: Power measurement, power calibration, adaptor efficiency. 12 p. (Paper 70C2-223,

p. 127). A note on the numerical evaluation of thermal radiation characteristics of diffuse cylindrical and conical cavities, B. A. Peavy

Presented are methods that avoid the need to employ

an extrapolation technique in the region of the critical 110
points for evaluation of the apparent emmissivity of dif- fuse cylindrical and conical cavities. The methods in- volve appropriate substitutions in the integrands of in- tegral equations that are used in analytical solutions for determining the thermal radiation characteristics of dif- fuse and conical cavities. Equations for either isother- mal surface temperature conditions are provided in a

direct form for computations. Numerical results are pre- sented for a general linear temperature distribution along

the length of a cylindrical cavity. The method is equally

applicable for the solution of other problems in integral equations where discontinuities are encountered Key Words: Conical, cylindrical, emissivity, nonisothermal. 9 p. (Paper 70C2-224, p 139).

Absolute value of g at the National Bureau of Standards, D. R. Tate A determination of the absolute value of the acceleration due to gravity has been completed at the National Bureau of Standards near Gaithersburg, Maryland. The

value, reduced to a gravity meter station on the floor of

the site is 9.801018 m/s 2 with a standard deviation of

0.3 x 10 -5 m/s 2

. The absolute value, which is 13.2 x

10 -5 m/s 2 (13.2 milligals) less than the corresponding Potsdam value, is in general agreement with other recent absolute determinations. Key Words: Absolute gravity, acceleration, free-fall, g, geodesy, gravity, Potsdam system. 2 p. (Paper 70C2-225, p. 149).

Ill
3.4. PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION D. RADIO PROPAGATION, VOLUME 64D, JULY-DECEMBER 196O

July-August 1960 Relation of turbulence theory to ionospheric forward

scatter propagation experiments, A. D. Wheelon

This paper attempts to relate turbulence theories to radio measurements on vhf ionospheric forward scatter

circuits. To this end, the single scattering description

of the electromagnetic response of electron density ir- regularities and the corresponding transmission expression are evaluated. Statistical distributions of signal levels are found to agree with a scattering model. The

several theories for turbulent mixing of the electron density are then summarized. A turbulence mixing model is compared favorably with experimental data on absolute

signal levels and their diurnal and seasonal variations. Scattering heights in the ionosphere responsible for the signals are also consistent with these theories. Fre- quency and distance dependence scaling laws are compared briefly with the data. The scatter signal behavior

during sudden ionospheric disturbances is also ex-' plained. No attempt is made to compare meteoric and

turbulence scatter contributions to the measured quantities in this paper. Approximately thirty references are given. 9 p. (Paper 64D4-62, p. 301). Propagation at oblique incidence over cylindrical obstacles, M. P. Bachynski

Investigations of propagation of short electromagnetic waves at oblique incidence over smooth, perfectly con- ducting cylindrical obstacles are described. It is shown

that the effect of oblique incidence can be considered as

a change in the effective radius of curvature of the dif- fracting obstacle. The power in the shadow region of a cylindrical obstacle decreases with angle of obliqueness

for horizontally polarized waves and can decrease, re- main constant, or increase with angle of obliqueness for vertically polarized waves depending on the geometry of

the propagation link. In all cases, vertical polarization gives a stronger field in the shadow region than hori- zontal polarization. In addition it is shown that the dif- fracted field behind an obstruction of uniform radius of curvature is the same as that behind an obstacle of uni- formly varying radius of curvature, provided the effective radius is the same. 5 p. (Paper 64D4-63, p. 311). Diffraction by smooth conical obstacles, H. E. J. Neugebauer and M. P. Bachynski

Expressions obtained earlier for the calculation of

diffraction due to conducting obstacles with smooth

cylindrical surfaces, are generalized to oblique incidence and to surfaces of conical shape. The derivation is based on a generalized concept of the Green's function and on the use of corrective factors that take the same

place as corrections introduced by other authors into the theory of diffraction by apertures. The final expressions for conical obstacles and oblique incidence are very similar to those for cylindrical obstacles. The re- sults are compared with scale model measurements.

13 p. (Paper 64D4-64, p. 317).

Characteristics of 488 megacycles per second radio signals reflected from the moon, B. C. Blevis and

J. H. Chapman

Radio signals at 488 megacycles per second, received

after reflection from the moon, have been studied using

a continuous wave bistatic radar system located near

Ottawa, Canada. These experiments were carried out

during 1957 and consisted of monitoring the signals re- ceived on two orthogonal dipoles mounted at the focus of

a 28 foot parabolic tracking antenna. The total mean re- ceived signal yielded an effective radar cross section of

the moon at this frequency of 0.05 of the projected area. The libration fading as observed in the two orthogonal

receiver channels was in synchronism, with a crosscorrelation coefficient of 0.89. It was established that the signal is not depolarized significantly on reflection

at the surface of the moon or in passing through the iono- sphere. Rotation of the plane of polarization of the radio wave in the double passage through the ionosphere was

observed to change by nearly 180 degrees over a six-hour period during quiet ionospheric conditions. 4 p. (Paper

64D4-65, p. 331). The use of polarization fading of satellite signals to study the electron content and irregularities in the ionosphere, C. G. Little and R. S. Lawrence A procedure is described for using the Faradayrotation fading of a satellite radio signal to measure the ionospheric electron content per unit column up to the height of the satellite. At frequencies as low as 20 Mc

the rotation of the plane of polarization cannot be as- sumed to be proportional to fNB cos 6 dl along the line

of sight. The simplifying assumptions implied by this expression are avoided, and full account is taken of ionospheric refraction, using the collision- free form of the Appleton-Hartree equation. Results based on obser- vations of 1958 Delta 2 are presented. The subsatellite

electron contents have been derived throughout the

satellite passes for heights both above and below the F-peak; the latter compare well with values derived

from simultaneous ionograms. The method also permits

the study of large-scale irregularities in electron content. Such irregularities, having lateral dimensions of

a few hundred kilometers and fractional deviations in subsatellite electron content of about 0.01, have been

detected. Our observations suggest that satellite polari- zation studies offer important advantages over other methods of investigating these irregularities. 12 p. (Paper 64D4-66, p. 335). Note on a test of the equivalence theorem for sporadic E propagation, J. W. Wright and T. N. Gautier Analysis of two days (123 cases) of sporadic E ob- served simultaneously at oblique and vertical incidence

verifies that the classical sec $ relationship between

top frequencies is roughly appropriate for sporadic E.

2 p. (Paper 64D4-67, p. 347). Daytime attentuation rates in the very low frequency band using atmospherics, W. L. Taylor Daytime attenuation characteristics have been computed by comparing the amplitude spectra of atmospheric

112
waveforms recorded at four widely separated stations. The results of these attenuation measurements are pre- sented for the band of frequencies from 3 to 30 kilo- cycles per second and involving distances of 1,000 to 10,000 kilometers. It was found from these data that attenutation was about 7 to 9 decibels per 1,000 kilo- meters at 6 kilocycles per second and decreases to about

1 to 3 decibels per 1,000 kilometers at frequencies

greater than 10 kilocycles per second. The difference in attenuation rate of west-to-east propagation relative to east-to-west propagation was about 3 decibels per 1,000 kilometers less for frequencies lower than 8 kilocycles

per second and about 1 decibel per 1,000 kilometers less

from frequencies higher than 10 kilocycles per second.

7 p. (Paper 64D4-68, p. 349). Measured electrical properties of snow and glacial ice, A. D. Watt and E. L. Maxwell The electrical properties of snow and glacial ice near

0° C have been observed over the frequency range from

20 cycles per second to 200 kilocycles per second. In general, the conductivity of snow and glacial ice is found to be much higher than that for pure ice. This is' particularly so at frequencies below 2 kilocycles per

second. The magnitude of the complex conductivity for glacial ice appears to increase with temperature at frequencies below 200 cycles per second and to decrease with tem- perature above this frequency. 7 p. (Paper 64D4-69,

p. 357). Half-wave cylindrical antenna in a dissipative medium:

Current and impedance, R. King and C. W. Harrison An integral equation for the distribution of current along a cylindrical antenna in a conducting dielectric is derived. It is shown that the boundary conditions for an antenna in such a medium are formally the same as for an antenna in free space. The equation is solved for the current / and the driving-point impedance Z by means

of a technique that achieves sufficiently high accuracy

in the leading terms of an iteration procedure so that the higher-order terms do not need to be evaluated. Moreover, these leading terms consist only of trigonometric functions with complex coefficients. The electromagnetic field in the infinite dissipative medium may be computed relatively easily since the current in the an- tenna is expressed in such simple terms. A numerical analysis is made to determine the properties of an antenna with an electrical length of one-half wavelength in the medium with conductivity a and relative

dielectric constant e r

. Universal curves are given of I/\J~r with a/co£0€ r as the parameter and of Zy/Tr with

e/ci>(0{ r as the variable in the range 0 < a/oy€0( T < 0.4. A table of numerical values of the impedance is given for media such as an isotropic ionosphere, dry salt, dry

earth, wet earth, and lake water. 6 p. (Paper 64D4-70,

P- 365). Some ELF phenomena, E. T. Pierce

Properties of the electric and magnetic fields in natural extremely low frequency (ELF) phenomena are

briefly discussed. The ELF fluctuations in the electric

field are then treated from two aspects; these are the electromagnetic changes associated with atmospherics

and the electrostatic variations in atmospheric electricity. A final section attempts to integrate the general subject of ELF effects of natural origin. 4 p. (Paper

64D4-71, p. 383). Mode theory and the propagation of ELF radio waves,

J. R. Wait The mode theory of propagation of electromagnetic waves at extremely low frequencies (ELF) (1.0 to 3,000 cycles per second) is treated in this paper. Starting with

the representation of the field as a sum of modes, ap- proximate formulas are presented for the attenuation and phase constants. Certain alternate representations of

the individual modes are mentioned. These are used as

a basis for describing the physical behavior of the field at large distances from the source, particularly near the antipode of the source. At the shorter distances, where

the range is comparable to the wavelength, the sphericalearth mode series is best transformed to a series involv- ing cylindrical wave functions. This latter form is used

to evaluate the near field behavior of the various field components. The effect of the earth's magnetic field is also evalu- ated using a quasi-longitudinal approximation. In general it is indicated that if the gyrofrequency is less than

the effective value of the collision frequency, the pres- ence of the earth's magnetic field may be neglected for ELF. When this condition is not met the attenuation may be increased somewhat. The influence of an in- homogeneous ionosphere is also briefly considered and,

finally, the propagation of ELF pulses is treated. It is suggested that certain observed characteristics of ELF

waveforms may be attributed to the inclination of the current channel in the lightning discharge. 18 p. (Paper

64D4-72, p. 387).

Studies of natural electric and magnetic fields, G. D. Garland and T. F. Webster

Simultaneous measurements of short-period natural

electric field variations across western Canada are re- ported. From these it is indicated that the effect of the varying depth to the Precambrian rocks is the dominant

factor. Analysis of the simultaneous magnetic and electric measurements gives a resistivity for the Precambrian basement in excess of 30x 10s ohm meters. 4 p. (Paper

64D4-73, p. 405). Natural electromagnetic energy below the ELF range, W. H. Campbell The transition of natural signals from sferics slow

tails to geomagnetic micropulsations was observed be- tween 2.0 and 0.2 cycles per second. Micropulsations

with periods of 5 to 30 seconds have characteristics which closely relate to solar terrestrial disturbance phe- nomena. The low latitude diurnal amplitude variation has maximums at 0945 and 1000 l.m.t. Similar groups of oscillations appear in Alaska and California. Simulta- neous pulsation of A 3914 aurora and magnetic field micropulsations has been observed in Alaska. 3 p. (Paper 64D4-74, p. 409). 113
Possible application of the system loss concept at ELF,

K. A. Norton A brief description is given of the possible application of the system loss concept at extremely low frequencies. A method for allowing for the effect of external noise levels is outlined. 2 p. (Paper 64D4-75, p. 413). Measurements of the spectrum of radio noise from 50 to 100 cycles per second, M. Balser and C. A. Wagner

Experimental spectra of radio noise in the band of about 50 to 100 cycles per second have been obtained by means of digital processing. Due to the long integration times which were used, the statistical uncertainty

in the estimates of power was reduced to about 3 percent

(0.13 decibel). It was hoped in this way to observe maximums in the spectrum due to excitation of higher resonant modes of the earth-ionosphere cavity (for the accuracy of these data, such peaks should be observed

if the Q of the cavity were 10 or greater at these fre- quencies). No statistically significant evidence of these

cavity effects was found. 4 p. (Paper 64D4-76, p. 415). September-October 19«>0 ELF electric fields from thunderstorms, A. D. Watt The varying electromagnetic fields produced by

thunderstorms and associated lightning discharges are examined. Calculated field variations produced by an assumed typical cloud to ground discharge model are found to agree well with observed fields. The magnitude of these vertical electric field changes are observed

to decrease very slowly with distance from the source

for values comparable to discharge channel heights. From 4 to 20 kilometers a l/cP relation is observed, and beyond 30 kilometers the field variations appear to fol- low a 1/d relation. The expected radiation field frequency spectra from 1 cycle per second to 100 kilocycles per second are cal- culated employing models assumed to be typical of "long* and "short" discharges. The radiation spectra obtained

from 1 to 100 kilocycles per second for observed cloud

to ground discharge field variations normalized to 1 kilo- meter are seen to agree within expected limits with cal- culated values. The models employed indicate that below 300 cycles

per second "long" discharges produce much more energy

than "short" discharges, and that inter- and intra-cloud discharges may produce as much energy as cloud to ground discharges. Anticipated variations of total vertical electric field frequency spectra as a function of distance, based on

the work of Wait, are shown for the frequency range from

1 cycle per second to 100 kilocycles per second. 9 p. (Paper 64D5-77, p. 425). Field strength measurements in fresh water, G. S. Saran and G. Held

Experiments were performed to measure field strength

at a frequency of 18.6 kilocycles per second in fresh water of conductivity 2.66xl0~3 mhos/meter down to depths of 1,000 feet using monopole and loop antennas.

The experimental results verify the theoretical values of

field strength attenuation with depth for all antennas and

of the ratio of vertical to horizontal field strength for the monopole antennas. 3 p. (Paper 64D5-78, p. 435). Electrical resistivity studies on the Athabasca Glacier,

Alberta, Canada, G. V Keller and F. C Frischknecht The use of electrical methods for measuring ice thick- ness and properties on the Athabasca Glacier, Alberta, Canada, has been studied by the U.S. Geological Survey. Two methods for measuring resistivity were tried: (1) a conventional resistivity method in which current was

introduced galvanically into the glacier through electrodes, and (2) the other an electromagnetic method in which a wire loop laid on the ice was used to induce cur- rent flow. Results of the galvanic measurements showed

large variations in the resistivity of the ice; in a surface

layer several tens of feet thick the resistivity is between

0.3 and 1.0 megohm-meters, and under this layer, the

resistivity of the ice is more than 10 megohm-meters. The resistivity of the surface ice is determined by its water content rather than by molecular resonance loss. The ice had no effect on the mutual coupling measure- ments in the frequency range from 100 to 10,000 cycles

per second. As a consequence the electromagnetic data could be interpreted simply in terms of ice thickness and

bedrock resistivity. 10 p. (Paper 64D5-79, p. 439). Amplitude distribution for radio signals reflected by meteor trails. I, A. D. Wheelon The probability distribution for the envelope of the received signal composed of reflections from many meteor

trails is derived theoretically. Both the effects of numerous, small meteors and the residual reflections from

infrequent, large meteors are treated simultaneously. For

the particular example of exponential decay of initial spikes which are themselves distributed as the inverse square of their amplitudes, we find that the probability

that the composite residual signal amplitude exceeds a prescribed level r is given by

1 P(R>r)=,

. ,( (vvQ)1 J

This function behaves as a Rayleigh distribution for small amplitude margins r. For the larger, less likely amplitudes it agrees with the result predicted by ele- mentary analysis of isolated meteor reflections. Possible

refinements of these results are also discussed. A sec- ond paper will discuss time correlation of composite

meteor signals at different times. 6 p. (Paper 64D5-80,

p. 449). Computation and measurement of the fading rate of moonreflected UHF signals, S. J. Fricker, R. P. Ingalls, W. C. Mason, M. L. Stone, and D. W. Swift A method is described for predicting the fast fading

rate of moon-reflected signals. It is based entirely upon

considerations of the observer-moon positions and rela- tive motions. Experimental results which are in good

114
agreement with the computed fading rates have been

obtained from a moon-reflection experiment at a fre- quency of 412 megacycles per second. Some possible

implications of this method of interpreting fading rates

are given, lip. (Paper 64D5-81, p. 455). On the theory of wave propagation through a concentrically stratified troposphere with a smooth profile. Part I. Discussion of the Extended W.K.B. Approximation, H. Bremmer The W.K.B. approximation for the solution of the height-gain differential equation for a curved stratified troposphere is discussed in detail. The approximation depends mainly on a variable u[(r) which can be inter- preted as the height dependent contribution of the phase

for a field solution obtained by separation of variables. An expansion of i//(V) with the aid of partial integra- tions leads to further approximations which facilitate the determination of the eigenvalues, and of the amplitudes

of the modes connected with the propagation problem. The influence of the refractive-index profile, if assumed

as smooth, then appears to be restricted to a dependence

on the surface values of this index and of its gradient

insofar as propagation over the ground is concerned.

Further, all height effects of elevated antennas can be expressed in terms of the distance to the corresponding

radio horizon. This results in simple relations between

the fields connected with two different refractive-index

profiles, provided both profiles coincide near the earth's surface. 16 p. (Paper 64D5-82, p. 467). Polarization and depression-angle dependence of radar

terrain return, I. Katz and L. M. Spetner A study of recent experimental results on radar back

scattering from land and sea surfaces indicate: (a) The

polarization dependence of the normalized radar cross

section, a0 , of ocean surfaces cannot be explained by

the usual "interference phenomenon," and (b) there is a

distinct difference in the form of the depression-angle dependence in the a0 for "smooth" surfaces follows a negative exponential whereas a0 for "rough" surfaces

drops off as the sine of the depression angle. 4 p. (Paper 64D5-83, P- 483). Methods of predicting the atmospheric bending of radio rays, B. R. Bean, G. D. Thayer, and B. A. Cahoon

Three methods for predicting the bending of radio rays when the refractive index profile above the surface layer

is unknown have been developed recently by the authors. These methods are: a statistical technique for refraction

at high initial elevation angles, estimation of bending

from an exponential model of atmospheric refractive index, and a modification of the exponential model to account for the heavily weighted effects of anomalous

initial refractive index gradients at small initial elevation angles. Each model is dependent upon the value of

the refractive index at ground level or, in the case of

super-refraction, the additional knowledge of the refractive index gradient next to the earth's surface. Each

method works best in a particular range of initial elevation angles or meteorological conditions. The height and

angular ranges of application of each method are checked

by comparison with values obtained from 77 diverse

refractive index profiles representative of wide climatic

variation. It is found that the use of the best of the

three methods will always result in a prediction of the

total atmospheric bending within 10 percent for initial elevation angles from zero to 10 milliradians and to within 4 percent for initial elevation angles greater than 17 milliradians (~ 1 deg). 6 p. (Paper 64D5-84, p. 487). Loss in channel capacity resulting from starting delay

in meteor-burst communition, G. R. Sugar The loss in channel capacity of a meteor-burst communition system is computed as a function of the time

required to initiate control of the system. The result

is compared with various experimental data and appears

to be applicable for signal bursts up to one-half second

in duration. It is noted that in the very high frequency

range the loss should increase with frequency. 2 p. (Paper 64D5-85, p. 493). Elementary considerations of the effects of multipath propagation in meteor-burst communication, G. R. Sugar, R. J. Carpenter, and G. R. Ochs

Three mechanisms likely to regularly produce multipath propagation are examined. These are: (1) The simulta- neous existence of two meteor trails; (2) the existence

of a Rayleigh-fading background continuum; and (3) the existence of two first-Fresnel zones along a single meteor (rail. An analysis of the first mechanism indicated that in a typical meteor-burst communication system two-trail pro- pagation would cause transmission errors at a rate directly proportional to the system duty cycle. Satis- factory agreement was obtained between predicted and

of the significance of interference from the continuum in some wide-band transmission tests indicated that this source of mulipath could be responsible for a significant

fraction of the errors observed. The third mechanism was examined to determine the magnitude of the multi- path delays it could produce. It was found that the

effect of this single-trail multipath was likely to be sig- nificant only for transmission rates in excess of 2x10"

bauds. However, the results of measurements at a rate

of 10s bauds indicated that even at this high rate over

one-half of the transmissions were error free and that this latter type of multipath may not be of much impor- tance in system design. 6 p. (Paper 64D5-86, p. 495). Use of logarithmic frequency spacing in ionogram analysis, G. A. M. King The use of logarithmic frequency spacing brings several advantages to the reduction of ionograms to electron density profiles. Among them is the fact that, when computing factors for the analysis, one need not determine

the group refractive index. Formulas involving only the phase refractive index are presented; for the ordinary component one exact and one approximate formula are given, while for the extraordinary component there is an

approximate formula valid over a wide range of geomagnetic latitudes. There is a brief discussion of quasilongitudinal approximations to the extraordinary phase

refractive index. 4 p. (Paper 64D5-87, p. 501). 115
Guidingof whistlers in a homogeneous medium, R.L. Smith The velocity of energy flow of whistlers in a homogeneous medium is computed as a function of wave-normal

angles. The maximum allowable cone of ray angles approaches 19°29' at very low frequencies, decreases

with frequency to a minimum of 11° at a wave frequency

of one-fifth the gyro frequency, then increases to 90° at the gyrofrequency. The velocity of energy flow departs markedly from the longitudinal value except at very low

frequencies or very small wave-normal angles. 4 p. (Paper 64D5-88, p. 505). Propagation of microwaves through a magneto-plasma, and a possible method for determining the electron

velocity distributions, A. L. Cullen Sagdeyev and Shafranov have shown that the absorption of microwaves in a hot plasma in a steady magnetic

field can be calculated in simple closed form with the help of the Boltzmann equation, provided that the effect

of collision can be ignored. The present paper is restricted to the special case

of propagation of circularly polarized waves parallel to the magnetic field, and the extraordinary ray, in magnetoionic terminology, is given special attention. It is shown

that the formula given by Sagdeyev and Shafranov for this case can be deduced by considering the motions of individual electrons by elementary dynamical methods,

using the concepts of Doppler shift and velocity distri- bution functions to obtain a macroscopic conductivity formula for a high-temperature plasma. From this, the absorption is easily calculated.

It is emphasized that the calculation in no way de- pends upon the assumption of a Maxwellian velocity

distribution function. The absorption can in fact be

obtained in closed form for any arbitrary velocity distri- This suggests that a diagnostic technique for the determination of velocity distribution could be based on measurements of absorption of the extraordinary ray, and

the potentialities arid limitations of this proposal are

briefly discussed. 5 p. (Paper 64D5-89, p. 509). On electromagnetic radiation in magneto-ionic media,

H. Kogelnik A method of treating radiation problems in magnetoionic (anisotropic) media is presented. A "wave matrix"

is defined, the zeros of whose determinant are the pro- pagation constants of the ordinary and the extraordinary plane waves. A derivation of the dyadic Green's function

for the unbounded medium is given, which is also based

on this matrix. A formula is arrived at, which gives the power radiated by any distribution of alternating current

in terms of the wave matrix and the spatial Fourier transforms of the currents. The method is illustrated by

a discussion of the power radiated by an elementary

dipole. 9 p. (Paper 64D5-90, p. 515). Radiation and admittance of an insulated slotted-sphere antenna surrounded by a strongly ionized plasma

J. W. Marini Given the voltage distribution along the slot, expressions for the radiation pattern, input admittance, and the

external efficiency of an insulated slotted-sphere antenna

surrounded by a homogeneous, isotropic, strongly ionized sheath are obtained. At low frequencies the input impedance is proportional

to the sum of the intrinsic impedance of the sheath and

an equivalent inductance due to the insulating coating,

the radiation pattern reduces to that of a small loop, while the external efficiency is the product of three factors arising because of the power dissipated in the sheath by higher order modes that contribute little to the radiation field, attenuation through the sheath of the modes that do radiate, and reflection loss of these modes

at the outer surface of the sheath. Since the reflection loss decreases with increasing frequency while the attenuation increases, there exists an optimum frequency of operation. At this frequency,

the ionized sheath has a thickness equal to two-and-onehalf skin depths. 8 p. (Paper 64D5-91, p. 525). A contribution to the theory of corrugated guides,

G. Piefke The transmission characteristics of certain structures belonging to the class of corrugated guides are calculated by means of a new method. It is assumed that the guide wavelength always is much greater than the corru- gation constant (D, + £) 2 in fig. 1). The periodical structure of the guide is therefore replaced by a quasi- homogeneous, but anisotropic medium. The following structures are studied: The "ring- element guide," which consists of an axial stack of insulated metallic rings with arbitrary surrounding medium; the "disk guide," which is a ring-element guide

with infinite radial extension of the rings; the "disk

loaded waveguide," and the "corrugated waveguide." As a rule guides can propagate modes with a phase

velocity vp <c (c = velocity of light) and modes with

vp <c. The capability of existence of the various modes

depends on the losses of the guide. The ring-element guide is well suited for transmission with the r/ 01 -mode

since, except the W 0n-modes, all modes may be highly attenuated (mode filters). As delay lines (wp

<c), all guides have band pass characteristics. 23 p. (Paper 64D5-92, p. 533). High-gain, very low side-lobe antenna with capability

for beam slewing, A. C. Wilson A corner-reflector antenna having reflecting surfaces

ten wavelengths wide and two wavelengths long was constructed, adjusted, and tested. The driven element was

a collinear array of ten half-wave dipoles. Dolph- Chebyshev current distribution designed for side-lobe suppressions to -45 decibels was computed. The cur- rents in the dipoles were adjusted as nearly as possible

to this distribution. The phase of the dipole currents was graded so as to slew the main beam 10° off the for- ward direction. The radiation patterns were measured

and found to be quite close to the computed. Check of pattern stability with time and with changes

in temperature and weather conditions showed it to be

quite stable. Measurements of radiation pattern at fre- quencies departing from design frequency showed the operating bandwidth (determined by the preservation of the pattern) to be adequate for the applications likely to be considered for such antennas. 116
The half-power beam widths of the main lobe were 9.8°

in the E-plane and 32° in the //-plane. On the basis of the measured beamwidths, the gain was calculated to be approximately 21.2 decibels relative to an isotropic radiator. The gain was experimentally measured to be 21.2 decibels. 5 p. (Paper 64D5-93, p. 557). Shielding of transient electromagnetic signals by a thin conducting sheet, N. R. Zitron The shielding effect of a thin, horizontal imperfectly conducting sheet against the transient field of a vertical magnetic dipole when excited by a ramp function is in- vestigated. The results are calculated by taking Laplace

transforms of the frequency spectrum functions for the steady-state problem. The response to the ramp function

is calculated and the significance of the results in shielding against surges is discussed. 5 p. (Paper 64D5-94, p. 563). Cylindrical antenna theory, R. H. Duncan and F. A. Hinchey A partial survey of cylindrical antenna theory pertain- ing to a tubular model with a narrow gap is presented. The survey includes discussion of the theories of Hallen, King and Middleton, Storm, and Zuhrt. A conceptual rela- tion between theory and experiment is described. The

latter part of the article is concerned with a new Fourier

series solution of the Hallen equation. This solution is developed in such a way that the expansion coefficients

are the unknowns of a system of linear equations. The

elements of the coefficient matrix are given by a highly convergent series. Numerical results are given for half and full wavelength antennas with half length to radius

ratios of 60 and 500tt. These results compare quite closely with those obtained from King-Middleton theory. 16 p. (Paper 64D5-95, p. 569).

November -December 1960 The following papers published in this issue of the Journal are based on the Report of the U.S.A. National Committee of the International Scientific Radio Union to the XIII General Assembly of the Union, London, England, September 5 to 15, I960. Commission 1. Radio Measurement Methods and Standards Review of developments

1. Frequency and time interval, E. A. Gerber

2. RF and microwave power measurement,

G. F. Engen

3. Impedance measurements and standards,

G. S. Deschamps

4. Development in attenuation measurements and

standards, B. O. Weinschel

5. Noise measurements and standards, B. M. Oliver

6. Field strength measurements, M. C. Selby

7. Measurements of physical quantities by radio techniques, M. C. Thompson, Jr. Commission 2. Tropospheric Radio Propagation

National Committee Report

1. Physical characteristics of the troposphere

2. Tropospheric propagation (theories)

3. Experimental results from investigations of tropospheric propagation

4. Radio meteorology

5. References

Commission 3. Ionospheric Radio Propagation Review of U.S.A. activity, 1957-59

1. Structure of the upper atmosphere

2. Ionizing radiations

3. Electron densities

4. Satellite beacon studies

5. Ionospheric processes

6. Ionospheric disturbances

7. Sporadic E and Spread F

8. Studies of the lower ionosphere

9. Radar studies of auroral ionization

10. Refraction in the ionosphere

11. Ionospheric propagation studies—general

12. Ionospheric scatter transmission

13. Radio reflection from meteor ionization

14. Ionospheric propagation research with communication system applications

Commission 4. Radio Noise of Terrestrial Origin Report of U. S. Commission 4, URSI (1957-1960)

1. Radio frequency radiation from lightning dis- charges, A. G. Jean

2. Properties of atmospheric noise at various

receiving locations, W. Q. Crichlow

3. Summary of research on whistler and related phenomena

4. A summary of VLF and ELF propagation

research, J. R. Wait

5. Hydromagnetic waves and ELF oscillations in the ionosphere, J. M. Watts

6. The exosphere, J. M. Watts

7. References Commission 5. Radio Astronomy Review of developments

1. University of Alabama

2. Air Force Cambridge Research Center

3. U. S. Army Signal Research and Development

Laboratory

4. California Institute of Technology

5. Carnegie Institution of Washington

6. Cornell University

7. Collins Radio Company

8. University of Colorado

9. Harvard University

10. Hayden Planetarium

11. University of Illinois

12. U. S. Naval Research Laboratory

13. The National Aeronautics and Space Administration

14. National Bureau of Standards, Boulder Labora15. National Radio Astronomy Observatory

16. Ohio State University

17. Rensselaer Polytechnic Institute

18. Stanford University

19. Yale University

20. University of Michigan 117
Commission 6. Radio Waves and Circuits Subcommission 6.1. Information Theory

Part 1. Information theory and coding, P. Elias Part 2. Random processes, P. Swerling

Part 3. Pattern recognition, A. Gill Part 4. Detection theory, R. Price

Part 5. Prediction and filtering, L. A. Zadeh

Subcommission 6.2. Circuit Theory

Circuit theory, L. Weinberg

1. Introduction

2. Combinatorial topology or linear graphs

3. Synthesis by pole-zero techniques

4. Realizability conditions and positive real matrices

5. Systems with time-varying and nonlinear re- actances

6. Active systems

7. Concluding remarks Subcommission 6.3- Antennas and Waveguides

Part 1. Diffraction and scattering, L. B. Felsen

and K. M. Siegel Part 2. On multiple scattering of waves, V. Twersky

Part 3. Antennas, R. W. Bickmore and R. C. Hansen A bibliography on coherence theory, G. B. Parrentjr. A bibliography of automatic antenna data processing, C. J. Drane

Surface and leaky wave antennas, F. J. Zucker Commission 7. Radio Electronics

1. Parametric amplifiers, P. K. Tien and H. Heffner

2. Microwave properties of ferrites, P. K. Tien and

B. Lax

3. Progress in solid-state masers, A. Siegman

4. Low-noise beam-type microwave tubes, L. Smullin

5. Interaction between plasmas and electromagnetic

fields, L. Smullin 173 p. (Paper 64D6-96, p. 591).

TITLE PAGE AND CONTENTS TO VOL. 64D. 8 P- PAPERS FROM THE JOURNAL OF RESEARCH OF THE

NATIONAL BUREAU OF STANDARDS, SECTION D. RADIO PROPAGATION, VOLUME 65D, JANUARY-DECEMBER 1961 January-February 1961 Incoherent scattering by free electrons as a technique for studying the ionosphere and exosphere: Some observations and theoretical considerations, K. L. Bowles

Incoherent scattering by the free electrons of the ionosphere has been suggested as a technique for measuring the electron density profile both below and

above the F region maximum. This paper reports observations which confirm the existence of the incoherent

scatter and show that its intensity is essentially the predicted value. The observed Doppler broadening is considerably smaller than originally predicted. In the second part of the paper, an explanation for the reduced

Doppler broadening is offered. The scatter is explained

as a r

' ing from statistical fluctuations of electron density, the distribution of which is controlled by the positive ions. 14 p. (Paper 65D1-97, p. 1).

Radio wave absorption of several gases in the 100 to 117 kMc/s frequency range, C. O. Britt, C. W. Tolbert, and

A. W. Straiton This paper describes a technique for the measurement

of the absorption characteristics of millimeter radio waves over a wide pressure range and presents the re- sults of measurements made with this technique for four gases in the frequency band from 100,000 to 117,000 megacycles per second. The four gases investigated in near pure state were carbon monoxide, nitrous oxide,

sulfur dioxide, and nitrogen dioxide. 4 p. (Paper 65D1-

98; p. 15). On the theory of diffraction by a composite cylinder, R. D. Kodis

Formulas are developed for the diffracted field around

a perfectly conducting cylinder with a dielectric sleeve

of arbitrary thickness. These formulas represent the

field due to a unit electric line source parallel to the cylinder (either inside or outside the dielectric sleeve) as a spectrum of radial ei gen functions. It is shown that

in each case the field in the region containing the source

can be expressed as the sum of two terms, the first of which is a spectral representation of the field when the outer as well as the inner surface of the dielectric is a

perfectly conducting boundary. The second term of the sum, which alone involves the properties of the dielectric,

is an integral that converges rapidly at high frequencies. Using these general results, perturbation calculations are

carried out for three limiting examples of plane wave

scattering: (1) Thin dielectric; (2) low-refractive index;

(3) very small surface curvature. In die latter approxi- mation the correspondence with optical results is shown.

15 p. (Paper 65D1-99, P- 19). An atlas of oblique-incidence ionograms (a digest), V. Agy, K. Davies, and R. Salaman A brief description is given of an atlas (published

separately) of oblique-incidence ionograms obtained on two paths, 1,150 and 2,370 kilometers. 2 p. (Paper

65D1-100, p. 35). A new approach to the mode theory of VLF propagation,

J. R. Wait An attempt is made in this paper to present a concise

derivation of the mode theory of VLF propagation. Taking note of the fact that the important modes for long- distance propagation are near grazing, suitable approxi- mate forms of the wave functions are introduced at the outset, rather than at the end, of the analysis. It is thus possible to account for the influence of earth curvature

in a relatively concise manner. The influence of the

earth's magnetic field is also discussed. Finally, numerical results for the attenuation and the phase velocity of

the dominant mode are presented. 10 p. (Paper 65D1-

101, p. 37). East-west effect on VLF mode transmission across the earth's magnetic field, D. Dobrott and A. Ishimaru The effect of a constant transverse magnetic field is analyzed for the propagation of VLF electromagnetic 118
waves about the earth. These waves are considered to be propagating by modes in a parallel plate waveguide. The lower boundary of the guide is considered to be a perfect conductor, while the upper boundary is assumed

to be a sharply defined, semi-infinite, homogeneous

plasma with a constant magnetic field applied. The

source of these waves is an infinite number of short, horizontal, cophased dipoles, uniformly spaced parallel

to the constant magnetic field vector. Admittance rela- tions are derived for the upper boundary of the guide by considering the waves to be of grazing incidence. It is found that these admittance parameters depend on the

direction of propagation. These admittance parameters

are plotted versus frequency for various heights. Expressions for eigenvalues and the eigenfunctions are found as functions of the admittance. By employing a two dimensional Green's function, the amplitudes of the various modes due to the dipole source are evaluated.

It is noted that the propagation constants differ depending on the direction of propagation, thus offering an ex- planation of the east-west effect of VLF transmission. A numerical example is calculated and field strength versus distance values are found to correspond to some

experimental results. 6 p. (Paper 65D1-102, p. 47). Magneto-ionic propagation phenomena in low-and very- Iow-radiofrequency waves reflected by the ionosphere,

J.R. Johler LF—VLF ionosphere reflection coefficients which

illustrate the dependence of the amplitude and phase of

the reflected wave upon the direction of propagation

relative to the direction of the earth's magnetic field are presented. The calculations are based on a plane, sharply bounded, model ionosphere with plane wave excitation, but employ full use of the magneto-ionic formulas for complex directions of propagation in the ionosphere such

that the influence of the earth's magnetic field in the

different directions of propagation is demonstrated. A

special table of values applicable to VLF is presented.

13 p. (Paper 65D1-103, p. 53). Correlation of monthly median transmission loss and

refractive index profile characteristics, B. R. Bean

and B. A. Cahoon The difference in the monthly mean values of the

refractive index at ground level and at one kilometer above the ground level is often used for the purpose of predicting the annual cycle of radio transmission loss. The present study investigates the possibility of utiliz- ing differences to heights other than one kilometer. A

comparison of 100 megacycles per second transmission

loss recorded over twenty-one paths with various refractivity differences from the surface to three kilometers

reveals that the surface value of the refractive index

yields as good a correlation as any of the refractive index differences due to the high correlation between the surface values and these differences; therefore the more

accessible surface value can be effectively substituted

for the differences. Specifying the refractive index profile at two or three additive points and using multiple

correlation techniques does not significantly increase

the correlation. The use of radio data over the same path does not

significantly improve the correlation over that obtained

from only meteorological data, indicating the very practical result that inexpensive meteorological data may be used to predict the seasonal trend of VHF radio field strengths with as much accuracy as expensive radio path measurements. 8 p. (Paper 65D1-104, p. 67). Characteristics of waveguides for long-distance trans- mission, A. E. Karbowiak and L. Solymar

Discussion of a waveguide communication system

is given and the system is compared with existing communication media. The principal properties of waveguide—

the medium of communication—are discussed in some

detail. The particular' significance of helical and coated waveguides is pointed out and the design formulas in- cluded. The phenomenon of mode conversion-reconversion, which is peculiar to a waveguide communication system,

is discussed in general and the basic theory as applic- able to design is also discussed. Design features of components such as bends, transducers, tapers, etc., are analyzed. The effect of waveguide discontinuities is analyzed in some detail and various aspects of signal

distortion are also considered. 14 p. (Paper 65D1-105,

p. 75). Useful radiation from an underground antenna, H. A. Wheeler An underground antenna delivers power to the surrounding conductive medium, and a fraction of the power goes

out as radiation above the surface. This fraction is denoted the "radiation efficiency." It is expressed in simple terms for two types of underground antennas. The

first and simplest is a vertical loop in a submerged

spherical radome. The second is a submerged horizontal insulated wire with each end connected to a ground

electrode. In each case, the efficiency is the product of three simple factors: The first depending on the index of

refraction between air and ground; the second proportional

to the size (radius of the radome or length of the wire); the third giving the attenuation with depth. An example

for 1 megacycle per second gives an efficiency of 0.0014

for an underground wire of specified dimensions. The

radiation efficiency is applicable to sender or receiver.

3 p. (Paper 65D1-106, p. 89).

Observation of F-layer and sporadic-F scatter at VHF in the Far East, K. Miya, T. Sasaki, and M. Ishikawa

This paper describes properties of sporadic-£ scatter and F-layer scatter observed over the Okinawa-to-Tokyo

path (1480 kilometers) and the Philippines-to-Tokyo path (2850 kilometers) operating at frequencies of about 50 megacycles per second. Sporadic-E scatter is often observed on the Okinawa

signal in the evening hours and has the closest correlation (0.94 in correlation ratio) with the occurrence of sporadic-E characterized by the descriptive symbol "M"

of all ionospheric factors. Bearing of the Es scatter shows a regular diurnal variation similar to that of the normal E-layer scatter. F-layer scatter generally appears on the Philippine

signal in autumn when the F-layer at the path midpoint

displays an anomaly denoted by the symbol "R" or "S"

having a top frequency of higher than 14 megacycles per second. A pulse test exhibited a pattern of multipath 119
signals extending over more than 1 millisecond. Bearing

of the F-layer scatter, an evening phenomenon, gradually deviates westwards from the great-circle path with the lapse of time. 7 p. (Paper 65D1-107, p. 93). A high-resolution rapid-scan antenna, H. V. Cottony and

A. C. Wilson An electronically scanned antenna array is described.

It consists of a broadside array of seven Yagi elements spaced 1.4 wavelengths apart. Each element antenna is connected to a preamplifier-converter. Each converter is connected to a local oscillator differing by 20 c/s from

that connected to the converter for the adjacent element.

All oscillators are locked in phase. The converter out- puts are connected to a common IF amplifier. This ar- rangement produces a 5.8-degree-wide beam swept over a 41.8-degree azimuth sector at a rate of 20 scans per second. The system operates at 40.92 Mc/s. The output

of the system is displayed on an oscilloscope, and data on the direction of arrival and character of a distant VHF

signal are presented visually. Sample records of signal components propagated by ionospheric scatter, meteor trail reflections, and

sporadic-E layer are cited. 10 p. (Paper 65Dl-108,p. 101). March-April 1961 Ionospheric motions observed with high frequency backscatter sounders, L. H. Tveten Techniques for determining the characteristics of movements of irregularities in the F2-region by the use of backscatter records are described. The results of an analysis of backscatter data obtained during December

1952, at Sterling, Virginia, at a frequency of about 13.7 Mc/s are presented and found to be in good agreement

with those of other investigators of ionospheric motions.

13 p. (Paper 65D2-109, p. 115). Relationship between red auroral arcs and ionospheric

recombination, G. A. M. King and F. E. Roach A "monochromatic" (6300 A) auroral arc, observed

photometrically to be north of Boulder, Colo., has been

identified with oblique echoes on ionograms taken near

Boulder. The auroral emission is explained in terms of

a great enhancement of ionospheric recombination. The

recombination process is shown to depend on the density

of molecular nitrogen in the ionospheric F region; the change in nitrogen density during and after auroral activity, responsible for the change in recombination rate, is ascribed to the combined effects of heating and mixing

of the atmosphere at the lower ionospheric heights. 7 p. (Paper 65D2-110, p. 129). Fresnel region fields of circular aperture antennas, M-K Hu

A different approach to the Fresnel region field approx- imation is introduced. Instead of using the conventional

trunacted power series expansion approximation, the Newton's iteration formula for square root is used. By

using such an approximation for circular apertures with tapered illumination of the form (l-£ a

) n

, the Fresnal

region fields can finally be expressed in terms of a new

class of functions Wg(y, «). The function W° is shown to

be related to the Lommel's functions of two variables, and the function W" is then obtained from the function by a simple recurrence relationship. Field distri- butions for w=0, 1, 2, 3, 4 and at distances '/< D

2/\, % D*/\, % D

s/A, £>7A, 2D 2/k, <*> have been computed and

presented as sets of curves. General and quantitative properties of the fields are clearly demonstrated by these

curves. It is also shown that the field of any other non- uniform illumination with circular symmetry can be ex- pressed in terms of the fields of the basic illumination of

the form (l-<f)n. 11 p. (Paper 65D2-111, p. 137). Free-balloon borne meteorological refractometer, J. F. Theisen and E. E. Gossard

In this paper a free balloon borne refractometer is described and samples of soundings are shown. The

instrument has been used for sampling the refractive index through the troposphere in a study of the fine struc- ture of refractive layers over Southern California. It uses

fast response temperature and humidity elements and is carried aloft by a standard radiosonde balloon. The

instrument avoids the defects of the usual radiosonde for obtaining refractive index information while allowing a nearly vertical sounding to be obtained without the dis- turbance of the atmosphere characteristic of a sounding

taken by an aircraft. 6 p. (Paper 65D2-112, p. 149). Weather and reception level on a troposphere link—annual and short-term correlations, L. G. Abraham, Jr., and

J. A. Bradshaw The weather parameters suggested by the Booker- Gordon theory are correlated with data from a troposphere

link not previously reported. While the correlations over

the whole year's weather cycle are high, the short term

correlations practically vanish. The former without the

latter lend little support to this theory. 2 p. (Paper

65D2-113, p. 155).

Initial results of a new technique for investigating sferic

activity, G. Hefley, R. H. Doherty, and R. F. Linfield A technique for the measurement of sferics on a massive scale has been developed. The technique pertains

largely to spectral and directional measurements. Representative samples of data are presented and discussed. The data samples include:

1. Diurnal variations in sferic rates as a function of

the 10.5, 40, and 100 kc/s component amplitudes.

2. Sferic rates as a function of triggering level.

3. Directional measurement of sferic rates.

4. Correlation of directional sferic rates with weather

reports.

5. Sferic amplitude distributions at 10.5, 40, and 106 kc/s.

6. Comparison of the distribution of amplitudes of the sferics from two different storm areas. Recommendations for future measurements are made.

10 p. (Paper 6 5D 2- 114, p. 157). Erfect of antenna radiation angles upon HF radio signals propagated over long distances, W. F. Utlaut Observations of a HF continuous wave radio signal which after propagating over east-west paths 6800 and

8400 kilometers in length were received on antennas 120
having different vertical-plane radiation angles indicate

that very low radiation-angle antennas may be advan- tageous for use in long-distance communication systems. Much of the time, hourly median signal levels received

on antennas with radiation angles less than 2 degrees exceeded those received at angles of 15 degrees by 10 decibels while signals received at angles between 2 and

5 degrees were 5 decibels greater than those received at 15 degrees. No significant change in the fade rate of the signal received at various radiation angles was found. A limited amount of data obtained during ionospheric

storms suggests that the radio signal received on a low

radiation-angle antenna is deteriorated by storm effects

for a shorter time, and to a lesser degree, than is the signal received by a high radiation-angle antenna. 8 p. (Paper 65D2-115, p. 167).

Graphical determination of radio ray bending in an exponential atmosphere, C. F. Pappas, L. E. Vogler, and

P. L. Rice

This paper presents a simple engineering method for calculating the amount of bending undergone by a radio

ray passing through an exponential model atmosphere. For any initial takeoff angle and for values of the sur- face refractivity ranging from 200 to 450, the bending

angle r may be determined as a function of height above

the earth's surface, using a few graphs and a few calculations. Indications of the accuracy of the method are given at the end of the paper. 5 p. (Paper 65D2-116,

P- 175). A formula for radio ray refraction in an exponential atmosphere, G. D. Thayer A formula for the radio ray refraction angle, r, is de- rived by integration of the approximate differential equation for the case where the refractivity, (n-l)xlO6

, decreases exponentially with height above the surface of

a smooth, spherical earth. The solution is in terms of the widely tabulated exponential and error functions, and

is accurate to within 4 percent over the useful range of

the variables employed. 2 p. (Paper 65D2-117, p. 181).

Impedance of a monopole antenna with a circular conducting-disk ground system on the surface of a lossy half space, S. W. Maley and R. J. King

The base impedance of a A/4 monopole antenna with a

circular conducting-disk ground system on the surface of a lossy half-space is calculated as a function of disk diameter using three different approximate methods.

Verifying measurements were made on a model at X-band

frequencies by simulating the lossy half-space with a water filled tank sufficiently large to approximate the results expected from an infinite lossy ground. The

measured impedance values, Z, were broken up into the sum of two terms AZ and Z°° where Z°° is the impedance

of the antenna with a perfectly conducting ground and AZ

is a term which accounts for the finite size of the disk. The experimental measurements on a number of antennas

indicate that the ratio AZ/Z°° as a function of disk diameter is nearly the same for all antennas measured. Comparison of the measured values of this ratio and the values calculated by the three different approximate methods indicate qualitative agreement. 5 p. (Paper

65D2-118, p. 183). Radio-wave propagation in the earth's crust, H. A. Wheeler There is a reasonable basis for postulating the exist- ence of a useful waveguide deep in the earth's crust, of

the order of 2 to 20 km below the surface. Its dielectric

is basement rock of very low conductivity. Its upper boundary is formed by the conductive layers near the surface. Its lower boundary is formed by a high-temperature conductive layer far below the surface, termed the ''thermal ionosphere" by analogy to the well-known

"radiation ionosphere" far above the surface. The electrical conductivity of the basement rock has

not been explored. An example based on reasonable esti- mates indicates that transmission at 1.5 kc/s might be

possible for a distance of the order of 1500 km. This waveguide is located under land and sea over the

entire surface of the earth. It may be useful for radio transmission from the shore to a submarine on the floor of the ocean. The sending antenna might be a long con- ductor in a drill hole deep in the basement rock; the receiving antenna might be a vertical loop in the water.

3 p. (Paper 65D2-119, p. 189).

May-June 1961

Propagation studies using direction-finding techniques,

E. C. Hayden

The most persistent and difficult problem in radio

direction finding has been measurement of the direction of arrival of an incident signal field under circumstances where multipath propagation is possible. In the HF band,

the ionosphere plays a predominant role in the propagation of radio waves, and in this region several mechanisms exist which promote splitting of a radio signal into numerous components.

121
It would be of value to have a more thorough knowledge

of the characteristics of the individual signal components. In this paper two techniques are described for the study of multicomponent signals. One involves use

of pulse transmissions to effect "time-of-arrival" resolution; the other involves use of a highly directive an- tenna system to effect "direction-of-arrival" resolution. Results of the application of these two techniques in specific instances are presented. 16 p. (Paper 65D3-

120, p. 197).

Diversity effects in long distance high frequency radio pulse propagation, S. A. Bowhill Spaced antenna measurements are described, made on

a 8,600-km path between Colombo, Ceylon, and Great Baddow, England, using pulsed radio signals. Simple

interpretations in terms of E and F region multiple re- flections give good agreement with observed delays for the various echoes. The correlation between echo amplitudes at spaced

antennas was found to be much greater for a pulsed signal than for a CW signal, indicating that most of the diversity in long-distance CW transmission arises through phase incoherence between the various orders of reflection, lip. (Paper 65D3-121, p. 213).

Influence of ionospheric conditions on the accuracy of high frequency direction finding, P. J. D. Gething

The accuracy of fixes obtained by HF direction finding stations has been examined by means of a dispersion

factor computed for each fix; this factor is a measure of the consistency of bearings taken from different stations on the same transmission. It is shown that the accuracy

is significantly lower during times of ionospheric storms

than at times when no storm occurred, and that the effect

of the storm is mainly on fixes involving F2 layer propagation. 4 p. (Paper 65D3-122, d. 225).

Phase difference observations at spaced aerials and their application to direction finding, W. C. Bain

The measurement of phase differences at two aerial

pairs, each spaced by three to four wavelengths, was

used to give mean bearings over periods of three to five minutes on certain transmitters with frequencies near

6 Mc/s. The results showed that site errors had prob- ably been reduced by this system to less than 0.5 deg, and possibly to 0.2 deg, which is a value derived on

theoretical grounds. The variance of the mean bearings due to lateral deviation was found to be slightly greater than anticipated. However, the results were such as to indicate that the performance of a wide-aperture direction

finder should not fall seriously below that which would

be expected of it theoretically on the basis of existing knowledge. 4 p. (Paper 65D3-123, p. 229). Research at the National Bureau of Standards applicable

to long-distance location and direction-finding prob- lems, R. Silberstein Research pertaining to radio-location and directionfinding problems conducted at the National Bureau of Standards since 1941 includes evolution of a technique

for determining polarization error, study of non-greatcircle bearings, the development of a rapid-scanning

directional antenna, and the development of Loran-C

with its precision timing capabilities. 3 p. (Paper 65D>

124, p. 233). Design for spinning goniometer automatic direction find- ing, W. J. Lindsay and D. S. Heim

This paper discusses some aspects of instrumentation design in making a spinning goniometer radio direction

finder essentially automatic in operation. Also dis- cussed is the application of narrow band synchronous

post detection filtering for improving the bearing sensitivity. 7 p. (Paper 65D3-125, p, 237). Resolution characteristics of correlation arrays, I. W. Linder Antenna arrays which are designed to utilize correlation techniques can result in directivity patterns with

very narrow beamwidth. However, analysis of resolution

capabilities of these arrays indicates a marked change

in expected performance in the presence of two or more

signal sources. These effects are analyzed for single frequency signal sources and for randomly varying signal sources. It is shown that optimum results occur when

the nonlinear processing of the antenna voltages is limited to a single multiplication. Under these conditions

122
the correlation array has a directivity equivalent to that

of a linear array of twice the length. 3 p. (Paper 65D3-

126, p. 245).

Instrumentation for propagation and direction-finding measurements, E. C. Hayden

Limitations imposed on radio direction-finding sys- tems are discussed in terms of a generalized representation of such systems in the form of a block diagram. Factors affecting these limitations include: (1) considerations of signal-to-noise ratio in the early part of the system, (2) receiver bandwidth requirements for adequate

selectivity, (3) width of spectrum generated by prere- ceiver encoding and computing processes, (4) restriction

to linear processes in multisignal portions of the system, and (5) availability of operational devices suitable

for use in low-signal-level portions of the system. 1 p. (Paper 65D3-127, p. 253).

Brooke variance classification system for DF bearings,

E. M. L. Beale

This paper describes the advantages of having an objective classification system for DF bearings. The

Brooke system is described in some detail, and the prob- lems involved in setting up a system on these lines are considered. 7 p. (Paper 65D3-128, p. 255).

Estimation of variances of position lines from fixes with unknown target positions E. M. L. Beale

Formulas are derived for the estimation of the vari- ances of position lines from fixes with unknown target positions. Two approaches are considered, (1) that pre- sented by Daniels [1951], and (2) an analysis of the

squares of the errors in the position lines assuming the

target is at the least squares estimate for its position.

11 p. (Paper 65D3-129, p. 263). Statistics of a radio wave diffracted by a random iono- sphere, S. A. Bowhill

For some purposes, particularly in connection with the study of the random structure of the lower ionosphere, using very low frequencies, it is necessary to find the detailed statistical properties of a random signal dif- fracting in free space. Mathematical tools for evaluating these parameters have been developed, and are applied

in this paper. Allowance is made for the effect of sphericity of the wave incident on the ionosphere, and anisotropy of the irregular variations of signal is permitted. The case of oblique incidence of a wave on the iono- sphere is also considered. 18 p. (Paper 65D3-130,

p. 275).

Space analysis of radio signals, J. B. Smyth The radio antenna is viewed as a space frequency

filter with an output just equal to the convolution of its transfer function with the radio field illuminating it? aperture. An equivalent uncertainty principle limits the accuracy with which the spatial distribution of the radio

field may be determined. The radio field generated by an antenna is distorted in passing into the ionosphere,

generating new space frequencies which is the information contained in the field at the receiving antenna. The

energy diffracted into the different orders will appear to arrive from different directions, and the angle of arrival

for a given order will be a function of the radiofrequency.

5 p. (Paper 65D3-131, p. 293). Effect of receiver bandwidth on the amplitude distribu- tion of VLF atmospheric noise, F. F. Fulton, Jr. The distribution function of envelope voltage for short samples of atmospheric radio noise as received by a
communications receiver in the VLF range always shows

a marked departure from that obtained for Gaussian noise.

If it is considered that this departure is caused by strong noise pulses which do not overlap in time, the effect of changes in the receiver bandwidth on the observed distribution function can be deduced by consideration of the changes in the receiver impulse response. A transformation can be obtained which gives an excellent approximation to the change in a mathematical representation oT the distribution function in the range of probabilities below 1 percent. Empirical relationships are suggested which give useful estimates of the change in the distri- bution function over the total range of probabilities. 6 p. (Paper 65D3-132, p. 229). Excitation of VLF and ELF radio waves by a horizontal magnetic dipole, J. Galejs The VLF and ELF modes excited by a horizontal magnetic dipole (vertical loop) in the spherical shell between

a finitely conducting earth and an isotropic sharply bounded ionosphere are shown to have a nearly trans- verse magnetic character. The modes are similar to those

of a vertical electric dipole. With the exception of the zero order mode, the propagating modes excited by the magnetic dipole are of slightly higher amplitudes, pro- vided that the far fields of the horizontal magnetic and

vertical electric dipoles are equal over flat earth in the absence of ionosphere. The transient fields generated by a current step in the magnetic dipole are in the first approximation similar to the fields generated by a current impulse in a vertical

electric dipole. Response of the zero order mode of the magnetic dipole has been calculated. 8 p. (Paper 65D3-

133, p. .305). July-August 1961 Almost fifty years of URSI, J. H. Dellinger Address at banquet, December 13, I960, of URSI-IRE

Meeting, Boulder, Colo. 4 p. (Paper 65D4-134, p. 317). Power density requirements for airglow excitation by gyrowaves, V. A. Bailey The original proposal in 1938 for generating an artifi- cial airglow by means of concentrated and powerful gyro- waves is reconsidered and new estimates are made of the powers P radiated from an aerial array of D ideal dipoles which would suffice to enhance the normal brightness of the airglow by specified factors. Other interesting phe- nomena are mentioned which may be produced in the nocturnal E-region by means of such powerful beams of gyrowaves. 2 p. (Paper 65D4-135, p. 321). On the validity of some approximations to the AppletonHartree formula, K. Davies and G. A. M. King The validity of some commonly used quasi-transverse and quasi-longitudinal approximations to the Appleton

magneto-ionic formula is considered. Using the dipole approximation for the earth's magnetic field the various approximations for the refractive index are compared with

the values computed from the complete formula for various

geomagnetic latitudes and a frequency of 2.0 megacycles

per second. It is found that certain approximations be- come very poor only a short distance from where they are exact and so care must be tak*n in their use. It is shown

that a choice of two suitable approximations yields

refractive indices of sufficient accuracy for all geomagnetic latitudes. Certain approximations to the group

refractive indices are also considered. 10 p. (Paper 65D4-136, p. 323). Amplitude and angular scintillations of the radio source Cygnus-A observed at Boulder, Colorado, R. S. Lawrence, J. L. Jespersen, and R. C. Lamb

Variations in the apparent flux and position of the

radio source Cygnus-A were recorded at 53 rnd 108 megacycles per second using a two-element, phase- sweeping

interferometer located at Boulder, Colo. An ionospheric sounder operating at Ellsworth, Nebraska, provided, for a few hours each day, simultaneous vertical-incidence measurements on the ionosphere at its intersection with

the line of sight from Boulder to the radio star. Amplitude scintillations observed at Boulder over a twelve- month period are compared with ionograms taken at Ells- worth. Positive correlation is found between amplitude

scintillations and spread F, while no significant correlation is found with sporadic E. DetaiLed analysis of the scintillations indicates that the probability distribution of the amplitude can be repre- sented by the Rice probability distribution function. The

zenith-angle dependence of the amplitude scintillations does not agree with a theory based upon isotropic iono- spheric inhomogeneities. The root-mean-square value of angular scintillations is proportional to the square of the wavelength, in accord

with a theory of diffraction by ionospheric irregularities. Comparison of angular scintillations with amplitude scintillations indicates that, for elevation angles of 15° to 50°, the region of the ionosphere responsible for scintil- lation lies near the border between the Fresnel and

Fraunhofer diffraction regions for both frequencies. Slow, irregular angular variations are commonly ob- served in the daytime at both frequencies. These vari- ations are attributed to lens-like ionospheric irregularities having dimensions as large as 200 kilometers.

18 p. (Paper 65D4-1 37, p. 333). Digital methods for the extraction of phase and amplitude

information from a modulated signal, R. S. Lawrence,

J. L. Jespersen, and R. C. Lamb

A description is given of three digital methods which

have been used to recover amplitude and phase information from a modulated sinusoidal signal sampled at equal

intervals of not more than one'sixth of a period. The

first method, the "zero-crossing" method, is economical

of computer time and, for modulation which is not too deep and does not contain frequencies near the carrier frequency, accurately recovers the phase and amplitude

modulation. The second method, the "filter" method, is more laborious but it gives better accuracy and will operate with deeper and more rapid modulation. The third method, a statistical approach, will work, with severly overmodulated signals, but it yields only a statistical summary of the modulation. The methods were designed 124
specifically for analysis of radio-star scintillation records but they may be applied to many other modulated

signals. 6 p. (Paper 65D4-138, p. 351). Comparison between mode theory and ray theory of VLF

propagation, H. Volland

It is shown that the field strength according to mode

theory and ray theory in the VLF band are derivable from

the same expression of the original vector potential, and

the result of one theory is the analytic continuation of the other one in another range of convergence. In fact, both ranges of convergence overlap. Estimates of these ranges are made and an example shows that within this overlapping region (between distances of 300 and 2,000 km) both theories give the same result. Using this fact calculations of frequency spectra are possible which in the case of a white noise dipole show some similar features to measured frequency spectra of lightning dis- charges. 5 p. (Paper 65D4-139, p. 357). Antenna coupling error in direction finders, C. W. Harrison, Jr. Antenna coupling or scattering error in an interfer- ometer-angle-measuring system consisting of two identi- cal base -loaded quarter-wave vertical antennas over a perfectly conducting earth is investigated. A curve is supplied for the error in angle as a function of antenna

spacing for an incident vertically polarized electric field arriving in the plane of the antennas, when the ratio of antenna length to radius is 75 and the base loads are resistors of 50 ohms. 7 p. (Paper 65D4-140, p. 363). The electrically short antenna as a probe for measuring

free electron densities and collision frequencies in an ionized region, R. King, C. W. Harrison, Jr., and D. H. Denton, Jr.

If the admittance of a missile, satellite, or droneaircraft antenna is monitored as the vehicle traverses an ionized region, it is possible to determine the free electron density and the collision frequency of the region if theoretical relations between these quantities are available. In this paper formulas are developed that relate

the admittance of an electrically short center-driven dipole or a base-driven monopolewhen immersed in a con- ducting dielectric to the effective dielectric constant and

conductivity of the medium. From well-known formulas

relating these quantities to the free electron density and

the collision frequency of an ionized region, these latter may be determined directly from measured admittances. The results obtained when the antenna is treated as a lumped capacitor are considered. It is shown that when

the conductivity of the medium is increased to a" value

that is still quite small, the effect of radiation on the input admittance becomes negligible. The electrically short antenna immersed in sea water is discussed briefly. 14 p. (Paper 65D4-141, p. 371). Effect of multiple atmospheric inversions on tropospheric

radio propagation, F. H. Northover Of the various mechanisms put forward in recent years

to explain long range tropospheric radio propagation the

most important seem to be scattering from atmospheric

turbulence and partial reflexion from high level subsi- dence inversion layers. In this paper the writer extends

earlier theory appropriate to the case of a single elevated

inversion layer to cover the case of multiple layers. In some cases it is found that the theory and formulas can

be applied, with very little modification, to the latter. The special cases in which this can be done are worked

out in detail and it is found that, if certain conditions

are satisfied, several weak high level inversions can produce a similar effect on the propagation to a single strong inversion. 8 p. (Paper 65D4-142, p. .385). A few observations of the perturbations in the phase of

the low-frequency ground wave, J. M. Ross and T. E. Kirch The effects of anomaly-producing terrain features on

the phase of the low frequency ground wave were measured in a nearly idealized environment to confirm theoreti- cal predictions: Results for an isolated butte gave good

correlation with the theoretical model. In most cases

the mean value of the phase perturbation approached zero. 4 p. (Paper 65D4-143, p. 393). Smooth earth diffraction calculations for horizontal

polarization, L. E. Vogler This paper presents a simplified method of determining

the attenuation relative to free space in the so-called far diffraction region for horizontally polarized radio waves

diffracted over a smooth spherical earth. A criterion is given which permits use of the method not only for far* beyond line-of-sight paths but, in many practical situ- ations, at line-of-sight or even slightly within. 3 p- (Paper 65D4-144, p. 397). On the theory of mixed-path ground-wave propagation on

a spherical earth, J. R. Wait The problem formulated concerns the mutual impedance

between two vertical dipole antennas A and B located near the surface of a spherical smooth earth. The path between A and B is made-up of a number of homogeneous

segments where the surface impedance is constant. Various formulas are developed, for two- and three-section

paths, which are suitable for computation. Certain limit- ing cases are discussed and where possible a physical

interpretation of the results is given. Comparisons with previous work are made. 10 p. (Paper 65D4-145> P- 401).

September -October 1961 Frequency dependence of D-region scattering at VHF,

J. C. Blair, R. M. Davis, Jr., and R. C. Kirby Results are given of a one-year program of observation

of frequency dependence of system loss for D-region

scattering at VHF. Continuous simultaneous observations were made at five frequencies from 30 to 108 Mc/s,

using narrow beam antennas scaled in dimensions and

height according to wavelength; the path was from Long

Branch, 111., to Boulder, Colo., a distance of 1,300 km. Hourly values of system loss closely followed the rela- tionship pj/pa oc/" The value of n varied with time of day and season, with 90 percent of all observations lying 125
in the range 7 to 9/2 for scaled antenna systems. Diurnal and seasonal variation of n are attributed to changing

relative roles of turbulence and meteoric reflections. Effects of normal ionospheric absorption are not apparent. A special analysis is made of frequency dependence dur- ing weak signal conditions. Results are also given of

studies of the frequency dependence of fading characteristics, the effect of beamwidth, and SID behavior. 9 p. (Paper 65D5-I46, p. 417). Theoretical scattering coefficient for near vertical inci- dence from contour maps, H. S. Hayre and R. K. Moore

In calculation of the theoretical scattering coefficient

for a terrain, previous authors tentatively assumed the normalized autocovariance function p(r)= e~ Ar for the ground elevation as a function of distance from a given

point. Recently autocorrelation studies were made using maps with contours ranging from one to twenty-five feet. These resulted in curves of p(r), which are approximated

by exp C— | r\/B). The theoretical scattering cross section

(ct0 ) of many such terrains can be expressed as

(4k V)"(cos2 g)" + 1 (n-1) ! (2k 2 B

2 sin 2 9 + n

2)3/2 (1)

'where a, \, k, and 6 ace standard deviation of the target

terrain, wavelength, wavenumber (2n/\) and the angle

of incidence respectively. For the case where l/S is small as compared to k, the above expression becomes

o0 = ^(6 cot* 6) for0^=O0. (2) These expressions, when normalized, are in agreement

with experimental results of other authors. It is also noteworthy that the results obtained with an acoustic

simulator model compared very well with this theoretical expression. This work is based on the property that the ground is conducting and has random elevation variations. Theoretical results calculated on the basis of varying ground impedance rather than its elevation are also in agreement with this expression. 6 p. (Paper 65D5-147,

p. 427). Mutual interference between surface and satellite communication systems, W. J. Hartman and M. T. Decker

Estimates of the mutual interference expected to occur between the ground terminals of space communications systems and surface point-to-point systems are presented

in a fashion suitable for engineering applications. These

estimates are obtained from recently developed methods

for predicting the transmission loss over tropospheric paths in terms of parameters such as geographic separation, elevation angle of the antenna, antenna patterns and frequency. It is concluded that these systems can

share the same frequency assignment under suitable

conditions. 4 p. (Paper 65D5-148, p. 433).

VHF and UHF signal characteristics observed on a long

knife-edge diffraction path, A. P. Barsis and R.S. Kirby

During 1959 and I960 long-term transmission loss measurements were performed over a 223 kilometer path

in Eastern Colorado using frequencies of 100 and 751 megacycles per second. This path intersects Pikes Peak which forms a knife-edge type obstacle visible from both terminals. The transmission loss measurements

have been analyzed in terms of diurnal and seasonal

variations in hourly medians and in instantaneous levels. As expected, results show that the long-term fading range is substantially less than expected for tropospheric

scatter paths of comparable length. Transmission loss

levels were in general agreement with predicted knife- edge diffraction propagation when allowance is made for rounding of the knife edge. A technique for estimating

long-term fading ranges is presented and the results are

in good agreement with observations. Short-term vari- ations in some cases resemble the space-wave fadeouts commonly observed on within-the-horizon paths, although

other phenomena may contribute to the fading. Since the foreground terrain was rough, there was no evidence of

direct and ground-reflected lobe structure.

In most cases comparatively high correlation exists between signals received simultaneously on two anten- nas with 8.3 and 14 meters vertical separation. These

separations were chosen as being representative for practical space diversity systems designed for eliminat- ing the effects of fading arising from direct and groundreflected phase interference phenomena. The comparatively high correlation observed suggests that space

diversity will be relatively less successful in mountain

obstacle paths with rough terrain near the terminals than on tropospheric scatter paths or on line-of-sight paths

over smooth terrain. The enhancement of field strength associated with propagation over mountain ridges may cause concern in applications where mountains are being counted on to shield unwanted radio waves. Some radio astronomy in- stallations have been located in mountain valleys for this reason, and it is possible that obstacle-gain effects may aggravate rather than alleviate interference. 12 p. (Paper 65D5-149, p. 437). Experimental study of inverted L-, T-, and related trans- mission-line antennas, S. Prasad and R. W. P. King An experimental study is made of inverted L-, T-, and

related transmission-line antennas and of antennas with

two-, three-, and four-element top loads. The apparent measured impedance is corrected for end effects; the ap- proximate theoretical impedances are calculated for very

small heights for which measured values cannot be ob- tained readily. The transmission-line antennas studied

are shunt-driven with one open and one closed end or with two closed ends. 6 p. (Paper 65D5-150, p. 449). Reflection from a sharply bounded ionosphere for VLF

propagation perpendicular to the magnetic meridian,

D. D. Crombie

There is experimental evidence that VLF signals propagating from west to east suffer less attenuation

than from east to west. Earlier work treating the case 126
of nonreciprocal propagation along the magnetic equator

is extended in latitude. The nonreciprocity shown by

\\R\\ for highly oblique propagation along the magnetic

equator persists when the reflection point moves towards

a magnetic pole, but at the pole itself ||R || is reciprocal. To a first approximation -L R 1 is reciprocal at all magnetic latitudes. The conversion coefficients 1R\\, are greater for east-to-west propagation than for propagation in the opposite direction, except at a magnetic pole where they are equal. 9 p. (Paper 65D5-151,

p. 455). Resonance of the space between earth and ionosphere,

H. Poeverlein When noise radiation of roughly one or a few kilo- cycles per second is emitted in the higher atmosphere,

part of it (an extraordinary wave) is propagated downward

into the space between earth and ionosphere. Reflection

at the earth and ionosphere leads then to a standing wave in this space, whose intensity for a given incident power flux varies very much with frequency. Maximum

field strength of the standing wave is derived for the resonance frequencies of the space. The incident wave

fronts are assumed to be horizontal. Only clearly defined wave fronts being of a sufficiently wide extension and showing no noticeable irregularities will lead to a definite resonance. The space between earth and iono- sphere is comparable to an air gap between two parallel plane reflectors. The lower ionosphere is however only

a partial reflector, allowing radiation to enter the reso- nance space and causing at the same time some loss of energy out of the resonance space (leakage). Stratification of the lower ionosphere has some influence on the resonance phenomena. With a D layer, an additional res- onance at a lower frequency is obtained.

It seems too early to decide whether in any observed

noises the resonance spectrum of the space between

earth and ionosphere becomes apparent, but it is ex- pected that noise spectra observed on the ground are modified by the resonances. In case of monochromatic

emissions, the received intensity depends on the position in the resonance spectrum. The resonance spectrum

should be received in case of emission of a white-noise

spectrum, provided the wave fronts are appropriate. 9 p. (Paper 65D5-152, p. 465). Observed attenuation rate of ELF radio waves, A. G. Jean, A. C. Murphy, J. R. Wait, and D. F. Wasmundt

Propagation attenuation rates for frequencies below

1 kc/s in the ELF region (30 c/s to 3,000 c/s) were

calculated from the spectra of atmospherics observed at widely-spaced stations. Data are presented for east to west propagation under sunset approaching the eastern

station. Under these conditions, the attenuation rates are about 1 db/1,000 km at 75 c/s and increase with in- creasing frequency, attaining about 3 db/1,000 km at 200 c/s. The attenuation rates observed seem to be

consistent with a two-layered ionosphere model with its lower region 90 km above the earth. 5 p- (Paper 65D5-

153, p- 475). A note concerning the excitation of ELF electromagnetic waves, J. R. Wait Previous solutions for the ELF mode series are dis- cussed briefly. Particular attention is paid to the heightgain functions. The excitation of the modes for vertical and horizontal dipole excitation is also considered. 4 p. (Paper 65D5-154, p. 481). Computation of whistler ray paths, I. Yabroff

Calculations of whistler ray paths in the outer iono- sphere are shown for a variety of electron density profile models including exponential, constant, and columnar

profiles. The Haselgrove formulation of the ray equations was used with the magneto-ionic representation of the wave refractive index to develop a set of differential equations for ray tracing suitable for inhomogeneous,

anisotropic medium. The variation of paths with fre- quency, latitude, initial wave-normal angle, and other

variables are examined for the purpose of providing a preliminary basis for comparison of the theoretical with some of the experimental results. 21 p. (Paper 65D5-

155, p. 485). On the analysis of LF ionospheric radio propagation phenomena, J. R. Johler Recent theoretical work which employs the classical magneto-ionic theory for a special model of the iono- sphere applicable to transmission via the ionosphere at or close to grazing incidence is employed to analyze LF

propagation data. The results of the analysis illustrate

a practical model of the ionosphere by a detailed study

of transmission via the first time-mode in particular. 23 p. (Paper 65D5-156, p. 507).

November -December 1961 The solar wind, E. N. Parker Hydrodynamic expansion of the solar corona is the basis for "solar corpuscular radiation." The quiet day

coronal temperatures of 1 to 2x 10s °K yield a solar wind

of several hundred km/sec and a density of 5 to 50 par- ticles/cm 5 at the orbit of Earth. The solar wind draws

out into space the lines of force of the general one-guass

solar field, to give an interplanetary field that is basically spiral in character with a density of the order of a few times 10~ 5 gauss at the orbit of Earth. The enhanced

corona may sometimes have temperatures of 4x 106 °K or more immediately following a large flare. Such explosive

heating leads to a 1 to 2x10 s km/sec blast wave into planetary space. The blast wave sweeps up the quiet-day

solar wind ahead and kinks the quiet-day field, raising the density of the field to several times 10 -4 gauss on some occasions. The galactic cosmic ray particles are swept back by the kink, producing a Forbush-type intensity decrease. Altogether, the blast wave and its magnetic field constitute the "enhanced solar corpuscular

radiation."

It is shown that the alternative magnetic tongue model

of Gold, and others [i960] is untenable because the "tongue" would not reach the earth until many hours

after the arrival of the blast wave. 6 p. (Paper 65D6-

157, p. 537). Attenuation coefficients for propagation at very low

frequencies (VLF) during a sudden ionospheric dis- turbance (SID), E. T. Pierce

Attenuation coefficients for propagation under SID

conditions are deduced, from records of atmospheric 127
noise, for die frequency range of 3.5 to 50 kilocycles per second. These are compared with the values under

normal daytime circumstances. It is shown that the ad- vent of SID implies little change in attenuation between

about 12 and 20 kilocycles per second; above this range

there is a markedly decreased attenuation, while below

12 kilocycles per second there is an even more pro- nounced increase in the attenuation coefficients. The

principle of an improved recorder of the changes in at- mospheric noise associated with SID conditions is outlined; this recorder would discriminate between source

effects independent of the SID and propagation influ- ences solely attributable to the SID. 4 p. (Paper 65D6-

158, p. 543). Dipole radiation in a conducting half space, R. K. Moore

and W. E. Blair The problem of communication between antennas, sub- merged in a conducting medium such as sea water, is analyzed in terms of a dipole radiating in a conducting

half space separated by a plane boundary from a dielectric half space. The theory is discussed for both hori- zontal and vertical, electric and magnetic dipoles. Expressions for the Hertzian potentials of the dipole

in the conducting half space can be reduced to integrals obtained by Sommerfeld (for a dipole at the boundary)

multiplied by an exponential depth attenuation factor. The Hertzian potentials are used to determine the electric and magnetic field components. The analysis shows that the main path of communication between submerged antennas is composed of three

parts as follows: (a) energy flow from the transmitting dipole directly to the surface of the sea, (b) creation of a wave that travels along the surface refracting back into the sea, (c) energy flow normal to the surface to the receiving dipole. 17 p. (Paper 65D6-1 59, p- 547).

Reliability of atmospheric radio noise predictions, J. R. Herman

Measured radio noise values are compared with the corresponding International Radio Consultative Committee [C.C.I. R., 1957] predicted values at four noise measuring stations. Five frequencies between 0.013 and 10.0 Mc/s are considered. The stations selected for this study include Balboa, Panama, near two major radio noise

centers, and Byrd Station, Antarctic, remote from atmospheric radio noise sources. It is found that the predicted and measured noise levels are in good agreement except

at some places and times, where large discrepancies

occur. Most of the disagreements are found at places where the predictions are based on extrapolations of data measured at other stations. Reasons for the disagree- ments are discussed. 10 p. (Paper 65D6-160, p. 565). Effects of the ionosphere on VLF navigational aids, W. T. Black band Long range navigational aids could be devised using VLF transmissions. The propagation of such waves is controlled by the lowest level of the ionosphere. The

small changes in phase velocity which accompany the

diurnal ionospheric changes have been studied using < ground monitor stations. Preliminary measurements made128

in an aircraft show internal consistency in fixing of about

1 nautical mile at ranges of 5,000 to 6,000 miles. 7 p. (Paper 65D6-161, p. 575). On the spectrum of terrestrial radio noise at extremely low frequencies, H. R. Raemer A theory of the frequency spectrum of radio noise at extremely low frequency (ELF) is presented and the results compared with recent measurements of the first five "Schumann" resonant modes (between 8 and 34 c/s) made by Balser and Wagner [i960]. The source of this noise is assumed to be return strokes in vertical cloud- ground lightning flashes distributed randomly in time, uniformly in angular displacement along the earth relative

to the observer and with statistics of stroke duration, interstroke intervals and strokes per flash taken from studies of thunderstorms reported by J. C. Williams. Thus, the mathematical model for the noise sources is an extremely simple one, being analogous to the shot effect

in electron devices. The electromagnetic model employs

the familiar waveguide mode theory, assumes a sharply bounded homogeneous ionosphere, and neglects the earth's magnetic field. Agreement between the shape of the theoretical and ob- served spectrum is good for the first three modes and

rather poor for the higher modes.

It is found by matching the theoretical resonant fre- quencies to the observed resonances that the product of

effective ionosphere height h and the square root of ef- fective conductivity \Jo i is a decreasing function of frequency. The functional dependence of this quantity on

frequency is determined and used in the calculation of

the mode spectrum. Discrepancies between the theory and experimental

results are believed to be partially due to the artificiality of the sharply bounded homogeneous ionosphere model

and to failure to give sufficient probability weighting to equatorial regions of abnormally high thunderstorm

activity. These last items are the subjects of continuing work

on the extension of the theory. 13 p. (Paper 65D6-162,

p. 581).

The nonsingular embedding of transition processes within a more general framework of coupled variables,

J. Heading

Reflection and coupling processes exhibited by plane

electromagnetic waves propagated in an inhomogeneous

horizon tally- stratified anisotropic ionosphere are associated with discrete transition points or with continuous

coupling regions. These arise when the fourth order dif- ferential equations are written in first order coupled form, and many terms in these equations become infinite at the

transition points. This procedure is rendered more pre- cise by means of a special linear transformation that reformulates the equations in a new way, thereby exhibit- ing the manner in which local coupling processes are em- bedded in the more general background process of other- wise independently propagated characteristic waves. To

exhibit the power of the matrix algebra involved, the case

of an arbitrary number of characteristic waves is considered; moreover, Forsterling-type coupled equations are
produced in a more generalized form than hitherto considered, and a discussion of the equations governing

continuous coupling completes the paper. 22 p. (Paper

65D6-163, p. 595). Worldwide VLF standard frequency and time signal broadcasting, A. D. Watt, R. W. Plush, W. W. Brown, and A. H. Morgan Recent studies and measurements have shown that the phase stability of the signals in the VLF region is very much higher than in the HF spectrum. This fact, along

with its excellent coverage characteristics, has caused

considerable interest in employing this medium for the wide distribution of standard frequencies and time refer- ence. Basic limitations in stability of the received sig- nals are discussed, including path phase distortion, carrier-to-noise and envelope delay variations as related

to precise synchronization of clocks, and highly accurate frequency calibrations. Also included is a discussion of the present services

of standard frequency and time signal stations throughout

the world at HF, LF, and VLF. 11 p. (Paper 65D6-164,

p. 617). Design of panoramic ionospheric recorders, L. H. Heisler and L. D. Wilson The design of ionosondes and the many electronic techniques used in die panoramic type are considered. A

complete ionosonde which is readily transportable, eco- nomic to construct, and has the additional facility of electronic scan over any portion of the frequency range

1.0 to 20 megacycles per second is described briefly. 8 p. (Paper 65D6-165, P- 629). A quick method for estimating the stage of the sunspot

cycle, W. B. Chadwick A method, based on the maximum median hourly value

of /0F2 month-by-month as observed at Washington, D.C.

is given for predicting a smoothed annual sunspot number

immediately at the close of a given month, centered on the month in question. Regression equations and standard

errors are given. It should be a useful supplement to the McNish-Lincoln method of prediction of sunspot numbers,

particularly during the first two years of the rising part of

a sunspot cycle. It is capable of use with the observations from any ionosphere sounding station operated in a consistent manner over a perdio of years, preferably during

at least two solar cycles. 4 p. (Paper 65D6-166, p. 637). Measurements of low-angle radiation from a monopole,

A. C. WiLson Experimental measurements using scale model tech- niques have been carried out to determine the effective- ness of a ground system of long-wire radials to obtain low angles of departure of transmission. Since trans- mission was to be in one direction only, the ground wires were laid out to form a ground-plane sector approximately

18° wide centered in the direction of transmission. The

antenna was a base-driven vertical monopole. Measure- ments were made of the relative response in decibels for the monopole used as a receiving antenna at a frequency

of 400 megacycles per second. The target transmitter antenna was always located at a distance of 200 wavelengths. At this separation the ground plane sector was

in the near field of the target transmitting antenna and

appropriate corrections must be made. The received signal strength improvement due to the presence of the ground sector was approximately 14 decibels. The measured lobe positions of the first and second beam maximums and the first null are in good agreement

with theory. 5 p. (Paper 65D6-467, p. 641). i TITLE PAGE AND CONTENTS TO VOL. 65. 6 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SECTION D. RADIO PROPAGATION, VOLUME 66, JANUARY- DECEMBER 1962

January-February 1962 A survey of the very wide band and frequency independent antennas-1945 to the present, J. D. Dyson The last few years have witnessed major developments

in the field of antennas which are suitable for use over a range of frequencies. Operating bandwidth s that were

considered an impossibility as little as seven years ago

are now readily available. To trace these developments, a brief historical survey

of the literature in this field since the Second World War,

is presented. 6 p. (Paper 66D1-168, p. 1). Numerical investigation of the equivalent impedance of a wire grid parallel to the interface between two media,

T. Larsen Based on a formula derived by Wait, a numerical in- vestigation of the equivalent impedance of a wire grid parallel to the plane interface between two homogeneous

media (ground and air) has been carried out. The calculations, which are of special interest to ground wire sys- tem design, are carried out for the grid placed in the air as well as in the ground. 8 p. (Paper 66D1-169, p. 7). Current on and input impedance of a cylindrical antenna, Y. M. Chen and J. B. Keller The electric current on a finite antenna is expressed

as the sum of a current emanating from the gap and two

currents reflected from the ends. These currents are de- termined for a perfectly conducting hollow pipe of circular-cross section. The antenna is excited by an

electric field parallel to the axis applied across a gap of

finite width which encircles the antenna. The currents are also determined for a thin antenna of any cross section. From the results the current on and the input ad- mittance of the antennas are determined. It is shown that the thin antenna theory yields an incorrect result for the admittance because it ignores a boundary layer effect near the gap. 7 p. (Paper 66D1-170, p. 15). Radar corner reflectors for linear or circular polarization, G. Latmiral and A. Sposito When a grid of parallel wires is put in front of a plane

or a corner reflector, interesting effects of polarization conversion can be obtained. These effects may be used

to construct trihedral corner reflectors which, contrary to 129
the normal ones, are radarvisible even with circular polarization. 7 p. (Paper 66D171, p. 23). On the theory of wave propagation through a concentrically stratified troposphere with a smooth profile. Part II. Expansion of the rigorous solution, H. Bremmer

This part concerns the height-gain differential equation

in order to obtain a series for the complete solution which

starts with the extended W. K. B. approximation dis- cussed in part I. The coefficients of this equation de- pend for each mode amongst other things on the parameters \j fixing the refractive-index profile. However, the

explicit dependence on these parameters can only be

given in terms of expansions with respect to (kda)~2/3 (&oa = circumference of the earth divided by the wavelength). In turn these expansions are derived with the aid of other ones for the complex turning point connected

with the height-gain differential equation. The final ex- pansion for the solution of the differential equation is substituted in the boundary condition at the earth's surface. This leads to corresponding expansions, with respect to {k^a.)~2/3

, of the quantity Uj(a), and next of the eigenvalues / themselves. 22 p. (Paper 66D1-172, p. 31). On the propagation of VLF and ELF radio waves when

the ionosphere is not sharply bounded, J. R. Wait Employing an idea of Brekhovskikh, an expression for the reflection coefficient of a continuously stratified ionized medium is derived. The result is in the form of a series whose first term is a Fresnel-type coefficient and succeeding terms account for the finite thickness of the transition layer. This result is then fitted into previously developed theory for propagation between a spherical earth and a concentric ionosphere. 9 p. (Paper 66D1-173, P- 53). Fields of electric dipoles in sea water—the earth- atmosphere-ionosphere problem, W. L. Anderson The theory of extremely low frequency radio wave

propagation from vertical and horizontal electric dipoles

in a half space, separated by an infinite slab from another

half space, is discussed and application is made to the specific case of the sea water-atmosphere-ionosphere

problem, with dipoles located in the sea water. Each of

the media is assumed homogeneous and isotropic. When

attention is restricted to the frequency range 1 to 1,000

c/s, integration in the complex plane leads to consideration of the pole corresponding to the TEM mode of trans- mission and two branch cut integrals. One of these (that giving rise to propagation of energy along and in the ionosphere) is found to be important in the case of the horizontal dipole. 10 p. (Paper 66D1-174, p. 63).

Reflection of electromagnetic waves from thin ionized gaseous layers, F. H. Northover The reflection properties of thin ionized layers are examined and earlier work on the parabolic layer, which seems unsatisfactory in some respects, is placed upon a more rigorous footing. Where the layer extends over most

of the transmission path, an approximate estimate is

made of the rate of attenuation of the waves around the curved earth. In this way it seems possible to account

for the freak long distance transmission of very high frequency radio wave which is sometimes observed: a particular example of this is considered in detail. 8 p. (Paper 66D1-175, p. 73). Reflection and transmission of radio waves at a continuously stratified plasma with arbitrary magnetic

induction, J. R. Johler and J. D. Harper, Jr. A flexible theoretical model plasma which can be deformed to fit most measured electron-ion-altitude

profiles is employed together with available geophysical

data on the ionosphere to evaluate reflections and trans- missions during quiescent and disturbed propagation

conditions. The reflections and transmissions in the .ionosphere are determined rigorously with the aid of the classical magneto-ionic theory. The complex indexes of

refraction of the medium are deduced, and a coupling in the plasma between ordinary and extraordinary, upgoing and downgoing modes of propagation is investigated. The corresponding reflection and transmission coefficients are then calculated, and certain phenomena

which can be expected as a result of the action of a solar disturbance on the reflection process are predicted. The disturbance of solar origin, investigated as an

application of developed techniques, influences the reflected and transmitted LF waves in the lower iono- sphere in a complicated manner. However, the high ab- sorption phenomena exhibited by high frequencies do not seem to exist for the plasma profiles investigated with

the classical magneto-ionic theory. The electron-collision frequencies of the classical magnetic-ionic theory are modified to introduce a colli- sion frequency proportional to the electron energy, and

the changes necessary in the formulation of the classical

theory as a result of such a consideration are presented.

19 p. (Paper 66D1-176, p. 81). On the diffraction of spherical radio waves by a finitely conducting spherical earth, L. C. Walters and J. R. Johler The theory for the diffraction of spherical electro- magnetic waves by a finitely conducting spherical earth was developed from Maxwell's equations by Watson

[1918] and the intricate computation details were later worked out by van der Pol and Bremmer [1936] as the now

classical series of residues. Two aspects of this computation present considerable difficulty, especially at low

frequencies:

(1) The calculation of the height-gain factor which

takes account of an elevated transmitter and/or receiver.

(2) The evaluation of the special roots, r=rs , of Riccati's differential equation,

near the circle of convergence, |§

2

r| = /^. These analytic difficulties are avoided with the aid of modern analysis techniques applied to a large scale electronic computer. Hankel functions of the first and second

kind of order one-third and two-thirds are calculated by numerical integral methods and then used with iteration 130
to solve Riccati's differential equation. The amplitude and phase of the spherical radio wave diffracted in the

vicinity of the earth with various altitudes above the surface of the earth, of both the transmitter and the receiver, are then calculated by a summation of the series of residues. 6 p. (Paper 66D1-177, p. 101).

An approximate full wave solution for low frequency electromagnetic waves in an unbounded magneto-ionic medium, W. C. Hoffman

Maxwell's equations in an anisotropic inhomogeneous medium are transformed by means of the Stratton-Chu formula into a vector integral equation which couples the various electric field components. In case the hypotheses

of far-zone field and low frequency electromagnetic waves

apply, this vector integral equation can be approximated

by a system of uncoupled scalar integral equations. This implies an approximate equivalence between the original vector integral equation and a system of modified

scalar inhomogeneous Helmholtz equations. The conditions under which the system of uncoupled scalar integral equations can be solved by Neumann series are discussed and the first three terms of the Neumann series are given

explicitly. 5 p. (Paper 66D1-178, p. 107). VHF radio propagation data for the Cedar Rapids-Sterling, Anchorage-Barrow, and Fargo-Churchill test paths,

April 1951 through June 1958, G. R. Sugar and K. W. Sullivan The data tabulated herein are hourly median values of system loss for ionospheric scatter propagation and for sporadic-F propagation. In addition, the duration of each

occurrence of sporadic-F. propagation is indicated. The

following data are included: Ionospheric Scatter Propagation Cedar Rapids to Sterling 27.775 Mc/s, April 1954 through January 1955, May 1955 through February 1956. 49.800 Mc/s, April 1951 through June 1958. 107.800 Mc/s, January 1952 through January 1953. Anchorage to Barrow

48.870 Mc/s, September 1951 through June 1953- Fargo to Churchill 49.700 Mc/s, September 1951 through March 1953. Sporadic-E Propagation Cedar Rapids to Sterling 49.800 Mc/s, April 1951 through June 1958. The experimental techniques used are briefly described and the accuracy of the results is discussed. 7 p. (Paper 66D1-179, p- 113). March-April 1962 Atmospheric phenomena, energetic electrons, and the geomagnetic field, J. R. Winckler This paper discusses X-ray measurements associated

with the dumping of electrons from the magnetic field, made with balloons and rockets. It is shown that in the normal auroral zone the X-ray bursts occur throughout the 24-hour period, have peak intensities corresponding to electron fluxes of 106 to 107/cm2 -sec, and have integrated

fluxes over a 24-hour period of 10

10/cm2

. In the auroral

zone the X-ray bursts arising from 30-kv or higher electrons are not correlated with visible aurorae. Direct

rocket measurements of bright aurorae in the auroral zone

confirm this by showing the absence of appreciable electron fluxes above 2C kv. At lower latitudes, however,

the X-rays are well-correlated with visible aurorae, have

peak burst intensities of 10

9 electrons/cm 2 -sec greater

than 30 kv, and are also strongly correlated widi negative bays in the local magnetic field. The Van Allen outer

radiation belt electrons provide a suitable reservoir for explaining many characteristics of the X-rays because of the latitude distribution and energy of the trapped radiation. Acceleration, deceleration, and redistribution processes are suggested, which may result in the pre- cipitation of these electrons to form the X-rays. 17 p. (Paper 66D2-180, p. 127). The summer intensity variations of [OI] 6300 A in the

tropics, D. Barbier, F. E. Roach, and W. R. Steiger

Intensity variations in May and June 1961 of the night airglow emission [OI] 6300 A are discussed, based on

observations made at the Hawaii Institute of Geophysics

Haleakala Observatory. The zenith variations are shown

to be proportional to the product

determined from ionospheric vertical soundings. Plots of the 6300 A intensity over the entire sky indicate a complicated pattern of localized regions of enhanced emission which seem to correspond to in situ changes. The

photometric changes of intensity correspond in concomitant vertical movements of the nocturnal ionospheric Flayer. 8 p. (Paper 66D2-181, p. 145). Generation of radio noise in the vicinity of the earth, P. A. Sturrock A tentative classification of possible sources of radio noise in the vicinity of the earth may be obtained by examining separately available sources of power and known mechanisms for conversion of this power. Among

the former we may list high-energy electrons such as

those trapped in the Van Allen belts; the solar wind;

bursts of high-energy particles ejected by the sun; shock waves in the interplanetary medium originating on the

sun; and the rotational energy of the earth. Mechanisms

of conversion may be classified as "direct," such as

synchrotron and Cerenkov radiation, and "indirect."

Indirect conversion involves the excitation of an inter- mediate state by the available sources of power and sub- sequent radiation by this state. This intermediate state may be localized heating, the formation of unstable cur- rent patterns, the acceleration of particles, or the generation of waves which are themselves non-radiative, such

as plasma oscillations. The following mechanisms which

are relevant to the generation of radio noise receive

special attention: Cerenkov radiation, two-stream in- stability, and the coupling of waves by inhomogeneity and nonlinearity. 5 p- (Paper 66D2-182, p. 153). Fading characteristics observed on a high-frequency

auroral radio path, J. W. Koch and H. E. Petrie Observations of fading characteristics of high-frequency

signals have been carried out on a long path (4,470 kilo- 131
meters) passing through the auroral zone. Statistics were

obtained on fading rate, short-terra carrier amplitude

fluctuations, and fade durations. Fading rates higher

than 20 cycles per second were observed for a small percentage of the time at each of the three carrier fre- quencies used, and show only a minor diurnal trend, with the maximum usually occurring during the early morning

hours. Rayleigh distributions of carrier envelope ampli- tude were obtained for many of the observations; however, fading depth was normally reduced during periods

of rapid fading. 8 p. (Paper 66D2-183, p. 159). Some problems connected with Rayleigh distributions, M. M. Siddiqui This is an expository paper presenting the following:

(1) the origin, and (2) the properties of the Rayleigh

distribution; (3) the most efficient estimators of its parameters; (4) a test of the hypothesis that a set of observations is from a Rayleigh distribution; (5) the distribution of the ratio of two independent Rayleigh variates; and

(6) the Rayleigh process derived from a normal process.

8 p. (Paper 66D2-184, p. 167). Impedance of a monopole antenna with a radial-wire ground system on an imperfectly conducting half space, Part I, S. W. Maley and R. J. King The effectiveness of a radial wire ground system as an approximation to a radial conducting disk ground system

for a vertical monopole antenna over an imperfectly con- ducting ground is investigated experimentally by means

of impedance measurements. The results were compared

with theoretical work by J. R. Wait. The comparison shows that Wait's formula for the effective surface imped- ance of a radial wire ground system gives results which

agree well with the measurements. 6 p. (Paper 66D2-185,

p. 175). Theory of the infinite cylindrical antenna including the feedpoint singularity in antenna current, R. H. Duncan The usual idealized model for a cylindrical antenna

consists of an extremely thin-walled tube of infinite conductivity with an infinitesimally narrow circumferential

gap. Physically, one expects the antenna current at the feedpoint of such a model to be infinite. However, the singularity in feedpoint current is not detected by either

iterative or Fourier series solutions of the integral equation for antenna current. These solutions are continuous

on \z\<h, where h is the half-length of the antenna. They

are also in good agreement with each other and with experimental data. From a formal point of view this amounts to saying that the conventional solutions of the integral equation are solutions on most, but not all, of

the range \z\< h. Inside a small region, \z\<z s , the cor- rect solution to the integral equation is peculiar to the idealized generator. Low-order iterative and Fourier

series solutions ignore these peculiarities and produce a smooth current distribution which can be used in predict- ing the behavior of practical structures. This paper is concerned with a detailed study of the theoretical current near the feedpoint of the idealized model and the develop- ment of a definition of z s

. 8 p. (Paper 66D2-186, p. 181). The E-field and W-field losses around antennas with a

radial ground wire system, T. Larsen

This paper describes an investigation of the ratio be- tween the E-field and the H-field losses per unit area,

and the absolute value of these losses around a half- wavelength monopole, a quarter-wavelength monopole, and around electrically short monopoles with as well as without top-loading all of them with a radial ground wire system. 16 p. (Paper 66D2-187, p. 189). The electric field at the ground plane near a disk-loaded monopole, J. Hansen and T. Larsen

In calculating ground losses for antennas with a groundwire system, it is necessary to know the vertical electricfield strength and the tangential magnetic-field strength

at the surface of the ground.

In this paper the vertical electric-field strength at the ground plane near the base of an electrically short verti- cal antenna with a top loading in the shape of a circular disk is calculated. Numerical computations are carried out to some extent. 6 p. (Paper 66D2-188, p. 205).

May-June 1962 A theory of radar reflections from a rough moon, D. F. Winter

It is proposed in this paper that the total lunar echo at any instant of time is comprised of two components,

which are the result of scattering from two general types

of terrain features. On the basis of this model, die average theoretical backscattered power flux at the receiver is derived as a function of time for the case of short pulse transmission. The radar cross section of the moon is also calculated. Several comparisons are made

between the theory and experimental results obtained

with a variety of equipment parameters. 12 p. (Paper

66D3-189, p. 215). A lunar theory reasserted, K. M. Siegel and T. B. A. Senior

Until recendy [Siegel, 1961; Senior and Siegel, 196 1] theory in the belief that little is gained by a continual contest of words about what are, after all, only theories based on a limited amount of experimental data. In addition, it is probable that in the near future new ex- perimental results will be obtained which will indicate

with more certainty the structure and composition of the lunar surface, and which will then permit a more rigorous analysis of the scattering mechanism at radar wavelengths, and this would be the logical time to assess the merits of the rival theories. There would be little point

in restating our own theory were it not for the fact that some of the more recent cridcisms of it are based on an incorrect appreciadon both of its origins and of its main

points. This is particularly apparent in the recent paper

by Winter [ 1962] , and a brief restatement of our thesis

is therefore necessary. 3 p. (Paper 66D3-190, p. 227).

Statistical distribution of the amplitude and phase of a multiply scattered field, P. Beckmann The probability distribution of the amplitude and phase

of the sum of a large number of random two-dimensional

vectors is derived under the following general conditions: Both the amplitudes and the phases of the, component vectors are random, the distributions being

arbitrary within the validity of the Central Limit Theo- 132
rem; in particular, the distributions of the individual vectors need not be identical, the amplitude and phase

of each component vector need not be independent and

the distributions need not be symmetrical. The dis-

•tributions formerly derived by Rayleigh, Rice, Hoyt, and Beckmann are shown to be special cases of this

distribution. 10 p. (Paper 66D3-191, p. 231). Amplitude distribution for radio signals reflected by meteor trails, II, A. D. Wheelon The bivariate probability distribution for two composite meteor signals displaced in time is derived

theoretically using the Markoff statistical combination

technique. Both the effects of numerous, small meteors

and the residual reflections from infrequent large meteors are treated simultaneously. For the case of ex- ponential decay of component signal spikes which are themselves distributed as the inverse square of their

initial amplitudes, we find that the joint probability

that a composite signal R, is observed at time t

1 and

R2 at t 2

, seconds later, is given exactly by the fol- lowing expression involving elliptic functions:

1

E I / 4R l R2 e~

T/ ^ \\Ja

2(l-e-T/V)* + (R 2+ R ie -T/vf

where o-=Qvq and v is the average rate of occurrence of meteor signal spikes of all sizes and 77 is the exponential decay time of each initial spike. This result re- duces to the usual limiting forms in the case of t very

large or very small relative to the decay time 77. 7 p. (Paper 66D3-192, p. 241).

High resolution pulse measurements of meteor-burst

propagation at 41 Mc/s over a 1,295-km path, R. J. Carpenter and G. R. Ochs

Studies of multipath radio signals have been made

over a 1,295-km path from Long Branch, Illinois to Boulder, Colorado. Three microsecond pulses with a peak power of 800 kilowatts were employed. Signals propagated via ionized meteor trails, ionospheric scatter, sporadic E and aurora were observed. Most single meteor trails show no detectable multipath. However,

spreading of the received pulse over a 10 microsecond

range with several components was visible occasionally. The simultaneous occurrence of several meteor

signals resulted in multiple paths differing in time by as much as 500 microseconds, although shorter delays were more probable. Continuous scatter signals cover

a 40 microsecond delay range. Strong Es signals usually show no detectable pulse distortion. When weak,

however, they may cover a 40 microsecond delay range.

16 p. (Paper 66D3-193, p. 249).

lonosperic irregularities and long-distance radio propagation, H. A. Whale A study and interpretation of many effects observed

in the reception of short-wave radio signals over long

distance propagation paths. Particular attention is paid to the day-to-day wanderings of the apparent direction of arrival about its mean position. The importance

of these wanderings with respect to the design of re- ceiving antennas is discussed, as it has been found

that once the regular diurnal variations have been

established for medium distance circuits, considerable advantage can result from a reduction of the beam widths

in the horizontal plane of antennas commonly in use.

8 p. (Paper 66D3-194, p. 265). On the role of the process of reflection in radio wave

propagation, F. du Castel, P. Misme, A. Spizzichino, and J. Voge

Nature offers numerous examples of irregular strati- fication of the medium for the propagation of radio waves. A study of the process of reflection in such a medium distinguishes between specular reflection and

diffuse reflection. The phenomenon of trans-horizon tropospheric propagation offers an example of the application of such a process, necessary for the interpretation of experimental results. Other examples are those

of ionospheric propagation (sporadic-E layer) and propagation over an irregular ground surface (phenomenon of

albedo). 12 p. (Paper 66D3-195, p. 273). Correlation between hourly median scattered signals and

simple refractivity parameters, A. S. Dennis Measured signals on two tropospheric scatter links have been analyzed in the light of radio refractivity profiles prepared from radiosonde data. On the shorter

link (San Diego—Santa Ana, 85 miles) the basic trans- mission loss was found to be approximately a linear

function of AN, the change in radio refractivity from

the ground to a height of 1 kilometer. On die longer (Cape Canaveral—New Providence Island, Bahamas,

300 miles) the relationship between transmission loss and A/V was nonlinear, and better results were ob- tained by averaging the refractivity gradient over 5,000

feet. Correlation coefficients on the San DiegoSanta Ana link range from 0.39 in August to 0.84 in February. On the Cape Canaveral—New Providence

link the correlation factor is 0.92. The results show

the feasibility of forecasting signal-to-noise ratios on

over-water tropospheric scatter communications systems

on a daily or hourly basis. 5 p. (Paper 66D3-196, p. 285). Observations of radio wave phase characteristics on a high-frequency auroral path, J. W. Koch and W. M. Beery Experimental observations of phase perturbations to continuous wave and pulse signals, over short time

periods, have been carried out on a high-frequency

auroral path. Statistics on phase perturbations occurring in time intervals of one to twenty milliseconds were obtained for the continuous wave signals. Pulse- 133
to-pulse phase stability measurements were made,

using one-millisecond pulses with a pulse repetition

rate of 250 pulses per second. The phase of corresponding parts of successive pulses were compared contin- uously, and then the integrated values of phase dif- ferences during one-millisecond pulse periods were

determined. Comparisons of statistics of phase per- turbations for continuous wave signals and one-milli- second pulse signals indicate no significant differences

for approximately four-millisecond sampling intervals and comparable fading speeds on this auroral path. 6 p. (Paper 66D3- 197, p. 291). Diurnal and seasonal changes in structure of the midlatitude quiet ionosphere, J. W. Wright Typical examples of N(h) data from a series of NBS

publications on ionospheric electron densities are described briefly as an introduction to data available

from a one-year's program beginning during the Inter- national Geophysical Cooperation, 1959. The entire body of data is then illustrated in compact form, and dis- cussed phenomenologically. In a synthesis and in- terpretation, it is concluded that diurnal, seasonal, and

latitudinal temperature variations in the F region may

explain many features of the quiet-day behavior of that region. A corpuscular component of heating at mid and

high latitudes is suggested as accounting for the seasonal anomaly in the daytime F region; the anomaly is assigned to the summer season rather than to winter, on

the basis of evidence given. The nighttime electron density variations are found to be explainable by the loss rate at the equilibrium height to which the layer

drifts under the influence of diffusion. An appendix discusses the day-to-day variability of the data. 16 p. (Paper 66D3-198, p. 297).

Schumann resonances of the earth-ionosphere cavity —

extremely low frequency reception at Kingston, R. I., C. Polk and F. Fitchen

Since June 1961 magnetic fields of natural origin in the 5 to 20 c/s frequency range have been recorded in Kingston, R. I. The experimental equipment is described

briefly, and results are presented. Variations with time

of the first resonant frequency of the earth-ionosphere

cavity are indicated, and effects of solar activity are discussed. An analysis of the envelope of recorded wave

trains shows only fair agreement with existing theory. 6 p. (Paper 66D3-199, p. 313).

Propagation of plane electromagnetic waves past a shoreline, J. Bazer and S. N. Karp The problems of the diffraction of homogeneous plane waves and ground waves by a linear shoreline in a

planar land-sea surface are discussed. The direction of propagation of these incident waves is assumed per- pendicular, and that of their magnetic vectors parallel,

to the shoreline. At the air-land interface, the customary impedance boundary condition is imposed while the sea

is treated as a perfect conductor; atmospheric and

ionospheric effects are ignored. Exact integral representations of the solutions are presented. In the case of homogeneous plane-wave excitation originating over the sea, the integral representations are employed

to obtain expressions for the geometrical optics field and for the far-field form of the remaining scattered

field, transition regions included. The possibility of coastal refraction is discussed. 16 p. (Paper 66D3-200,

p. 319).

Currents induced on the surface of a conducting circular cylinder by a slot, G. Hasserjian and A. Ishimaru This paper is a partial study of currents induced on

circular, conducting cylinders by narrow radiating slots.

First, a brief and general formulation of the radiation

fields of slots on cylinders is made. Then, the problem

of an infinite axial slot is examined thoroughly for all cylinder sizes. An expansion for the fields, very close

to the slot, on large radius cylinders, is also obtained. Sample computations are made, for various ranges of cylinder radius, and the order of the errors is discussed. The problem of a circumferential slot, of constant

excitation, is also considered. An asymptotic expansion

obtained for this case yields the surface current distribution for values of axial distances that are smaller than

the square of the circumference of the cylinder. Since one of the objectives of this study is to deter- mine mutual coupling between two slots on a cylinder,

the last section presents a formulation of the equivalent network in terms of the surface and feed line currents.

31 p. (Paper 66D3-201, p. 335).

July-August 1962

Propagation problems with space radio communications,

K. Rawer

Ionospheric and tropospheric refraction and absorption influence earth-space propagation. The relative impor- tance of the ionospheric influence is considerably larger than in terrestrial propagation. Apart from the effects of

this latter known from experience, some new phenomena

have been observed, viz, special cases of antipode re- ception, field- strength scintillations and blackouts.

Specific phase effects have been observed: the Dopplereffect is due to the satellites quick movement, the Faraday

effect is caused by the presence of double refraction in the ionosphere. Both effects present some difficulties

for most applications. The most important tropospheric

effects are molecular absorption and the corresponding

statistical noise. 19 p. (Paper 66D4-202, p. 375). On the absolute intensity of incoherent scatter echoes

from the ionosphere, K. L. Bowles, G. R. Ochs, and

J. L. Green New observations have been made of the absolute

intensity of incoherent scatter echoes from the iono- sphere, at a station near Lima, Peru. In order to analyze

these observations properly, the paper begins with a re- derivation of the radar equation in its form appropriate to incoherent scatter studies. The result of this derivation

is that a correction factor of approximately 2 must be 134
applied to the radar equation in its form generally used

in this work. Details given of the observational parameters of the radar system permit precise comparison of the present results with results of other workers. The

observations indicate that the average radar cross section per free electron is usually close to the theoretically predicted value of one half the classical Thomson cross

section. This suggests that the ionosphere is usually

in a condition of thermal equilibrium between ions and

electrons. Occasionally, particularly at sunrise, the observed cross section is still lower, approximating one

quarter of the classical Thomson cross section. This

observation would agree with the theorectical predictions

of J. A. Fejer [l96l] if the electron temperature at sunrise in the F region exceeds the ion temperature. 13 p. (Paper 66D4-203, p. 395). On the forward scattering of radio waves in the lower

ionosphere, T. Hagfors

K method is developed whereby it is, in principle, possible to separate the two main signal components in VHF ionospheric forward scatter propagation. The method

is based on a study of the angular power distribution of the received signal. From experiments made over a cir- cuit of 1,180 km the law of turbulent scattering is deter- mined. The spectrum for the electronic irregularities is found to be given by k~P with n = 9 under the experi- mental conditions described. 10 p. (Paper 66D4-204,

p. 409). Representation of diurnal and geographic variations of ionospheric data by numerical methods, W. B. Jones

and R. M. Gallet A solution is given to the problem of representing the complex properties of ionospheric characteristics on a worldwide scale, including their diumal variation, by numerical analysis of ionospheric data as they are ob- tained from a network of sounding stations, without prior hand operations. The problem is complicated by two

basic difficulties: (1) the data are affected by noise (random fluctuation) and (2) the stations are irregularly positioned in the two space dimensions. The second

difficulty is overcome by a general method for construct- ing functions orthogonal relative to the distribution of the stations. Special filtering processes are employed

for the optimum separation of noise from real physical

variations. The end product of the analysis is a table of numerical coefficients defining a function T (\,8,t) of three variables, latitude (A), longitude (6) and time (0, which can be used to compute the ionospheric characteristic at any desired location or instant of time. The

method applies to any ionospheric characteristic; however, as a means of illustration we use in the present paper only the characteristic, monthly median of the F2-layer critical frequency (/0 F2 ). 20 p. (Paper 66D4-

205, p. 419). Interaction between an obliquely incident plane electro- magnetic wave and an electron beam in the presence of

a static magnetic field of arbitrary strength, K. H. B.

v~ilhelmsson The purpose of the paper is to study theoretically the interaction between an obliquely incident plane electromagnetic wave and an electron beam. We assume diat a static magnetic field of arbitrary strength is present in the axial direction. Machine computations made for the case of a cylindrical electron plasma show that resonances occur in the backscattering cross section as a function of the angle of in- cidence of the plane wave. The dependence of the resonance angles on the plasma frequency for fixed gyro- frequency suggests a possibility of utilizing the results

of the investigation for diagnostics of a cylindrical plasma. 13 p. (Paper 66D4-206, p. 439). An analysis of VLF mode propagation for a variable ionosphere height, J. R. Wait An approximate treatment of modes in a waveguide of variable width is presented. It is assumed that the boundaries satisfy impedance-type boundary conditions. The model consists of two parallel plate waveguide

regions connected by a linearly tapered section. The

results have application to the theory of VLF radio wave

propagation when the ionospheric heights are not constant along the path. 9 p. (Paper 66D4-207, p. 453). method for the determination of lower ionosphere

properties by means of field measurements on sferics,

F. B Harris, Jr., and R. L. Tanner The propagation of audiofrequency and sub-audio- frequency waves between the earth and an ionosphere whose conductivity varies continuously with altitude is considered in detail. The fields are represented in terms

of two scalar potentials satisfying appropriate wave

equations in spherical coordinates.

It is shown, on the basis of existing data on the iono- sphere, that waves in this frequency range can be con- sidered to be confined to a thin, but not sharply bounded,

spherical shell about the earth. Greatly simplified radial wave equations in dimensionless form are derived in- corporating this approximation. Solutions of these

equations are given for two regions, viz, for the lowaltitude region where a/coe0 «l and, in the case of certain restricted types of conductivity profile, for the highaltitude region where a/coe 0 >>l. An iterative method is presented, based on an integral equation, which makes

possible a computation of the radial wave function in the

transition region and a joining of interior and exterior solutions for the propagating TM mode. The result is a direct mathematical relationship between the conductivity

profile and the complex propagation constant as a function

of frequency.

It is demonstrated that at frequencies above about 50 cycles the propagation constant can be obtained from measurements of the horizontal components of electric and magnetic fields in individual sferics at airplane alti- tudes, while at lower frequencies the same information can be obtained through ground-based observation of cavity resonance effects in sferic noise. Existing data on these cavity resonances are used to calculate the complex propagation constant as a function of frequency from

6 to 34 cycles. The results, when extrapolated to higher

frequencies, predict attenuation rates in excellent agree- ment with currently available data. The effect of the diurnal variation in conductivity on observable quantities is briefly examined, and tentative conclusions as to its magnitude are drawn. 16 p. (Paper

66D4-208, p. 463). 135
Defocusing of radio rays by the troposphere, R. E. Wilkerson When radio rays pass through the atmosphere, they are defocused due to its presence. This effect is measured

by the divergence coefficient and general formulas are derived for Du

the divergence coefficient of the direct

ray, and D2

, the divergence coefficient of the reflected ray—assuming a smooth spherical earth. As examples,

Dj and D2 are shown for some typical cases with an "exponential" atmosphere (troposphere). 7 p. (Paper

66D4-209, p. 479). Magnetotelluric fields in the frequency range 0.03 to 7 cycles per kilosecond: Part I. Power spectra, C. W. Horton and A. A. J. Hoffman Power spectra of die horizontal components of the magnetic field and the telluric field are computed for data recorded on 1 and 2 September 1957 at the Soviet Magnetic Observatory in Tbilisi. Power spectra of the East- West telluric field component are computed for 20 September 1957 for Soviet stations located at Lvov, Tbilisi, and Ashkhabad. All analyses are based on microfilm copies

furnished by the IGY World Data Center A. Each power

spectrum shows a frequency dependence over a frequency range of 0.03 to 7 cycles per kilosecond of the form PJ~n where n varies from 1.1 to 2.5. The coherency be- tween orthogonal components of the telluric and magnetic

fields is computed for the data from Tbilisi. Magnetotelluric power spectra from USSR, Canada, Texas, and Massachusetts are plotted on a common graph to show the frequency dependence over the range 0.03 to 400 cycles

per kilosecond. 8 p. (Paper 66D4-210, p. 487). Magnetotelluric fields in the frequency range 0.03 to 7 cycles per kilosecond: Part II. Geophysical inter- pretation, C. W. Horton and A. A. J. Hoffman The power spectra computed in part I for Tbilisi, USSR, are used to compute apparent resistivity in accord- ance with a formula developed by Cagniard. It is found

that both components of the telluric field yield a value

of 6 ohm meters for the apparent electrical resistivity of the earth. The data do not extend over a sufficiently wide range of frequency to permit conclusions about the

stratification. There is no evidence of horizontal an- isotropy of the earth's resistivity. The magnetic power spectrum for the earth's ambient

field is corrected for the transmission losses in the ionosphere to yield the power spectrum of the magnetic

field incident on the earth. The major part of the variation with frequency is eliminated by this correction. 3 p. (Paper 66D4-211, p. 495). Impedance of a Circular Loop in an Infinite Conducting Medium, M. B. Kraichman

Expressions are derived for the resistance and re- actance of a circular loop of thinly insulated wire which

carries a uniform current and is immersed in a conducting medium. The result for the resistance is compared with

that known for a circular loop in a spherical insulating

cavity. 5 p. (Paper 66D4-212, p. 499).

Septemtrer-October 1962 Theory of magneto-telluric fields, J. R. Wait This paper is a review of the present state of knowl- edge of magneto-telluric fields. The subject has to do

with the combined analyses of the geomagnetic and the

telluric (earth-current) fields on the surface of the earth. Usually, the objective of such investigations is to obtain information about the earth's crustal layers. However,

for a sensible use of the method it is desirable to under- stand something about the source of the fields. In this paper, the various suggestions for the source mechanism

are discussed. Then a fairly detailed review of previous work on the theory of the magneto-telluric interpretation

is given. Included are a number of three-layer interpre- tation curves. The influence of earth curvature in magneto-telluric theory is treated in a mathematical

appendix which is, in itself, a self-contained derivation of the various formulas. 33 p. (Paper 66D5-213, p. 509). Propagation characteristics of magneto-ionic plasma

columns, D. Formato and A. Gilardini The propagation characteristics of uniform, cylindrical plasma columns of circular cross section in axial, constant magnetic fields are determined. The ratios (plasma

wavelength)/(free-space wavelength) and (power flowing

in the plasma)/(power flowing outside) are evaluated and discussed as functions of the diameter/wavelength ratio and of the plasma permittivity, for propagation of cir- cularly symmetrical modes. Brillouin diagrams are also derived and compared with the. results predicted by the quasi-static approximation. The analysis is for a nonattenuating plasma, but formulas giving the attenuation due to electron-molecule collisions are also included.

13 p. (Paper 66D5-214, p. 54^). Dielectric loading of electric dipole antennas, J. Galejs

It has been indicated by Wheeler that dielectric loading

(f> 1) decreases the radiation power factor of small ca- pacitor type antennas. A wide-angle biconical antenna

is shown to follow this behavior. However, exceptions

to it are provided by an infinitesimal dipole embedded

in a finite dielectric sphere and by dielectrically loaded

small-angle biconical antennas, where a moderate increase

of e provides a slight increase of the radiation power

factor. In the latter two cases the dielectric surface is not tangential to the electric field lines and the reasoning which leads to the results of Wheeler is not strictly appli- cable. 6 p. (Paper 66D5-215, p. 557). Possible influence of the ionosphere on the impedance of

a ground-based antenna, J. R. Wait The analysis for the impedance of a vertical electric dipole in the presence of an isotropic and homogeneous

conducting half-space is presented. Various approaches

to the problem are then briefly compared and some nu- merical results are presented in graphical form. The

extensions to an anisotropic half-space are also considered. Finally, the dipole is located in the space

between a homogeneous ground and a sharply bounded

136
ionosphere. It is concluded that the presence of the ionosphere has a negligible effect on the impedance of a ground-based antenna unless the frequency is less than 1,000 c/s or so. 7 p. (Paper 66 0 5-216, p. 563). Some statistical theory for the analysis of radio propagation data, M. M. Siddiqui The statistical theory of stationary processes has wide

applications in the analysis of radio wave propagation

data. In this paper, assuming the knowledge of the basic concepts of probability theory on the part of the reader, characteristics of stationary processes such as covariance and spectral density functions have been developed, problems of estimating these characteristics have been

tackled, and numerous examples have been worked out to illustrate the theory. 10 p. (Paper 66D5-217, p. 571). Auroral sporadic-E ionization, R. D. Hunsucker and

L. Owren

Auroral type sporadic-E recorded with the C-3ionosonde

at College, Alaska during the IGY winter 1957-58 has

been compared with simultaneous all-sky camera observations and other data for times of auroral activity. Both

frame- by -frame comparisons of ionograms and all-sky camera photographs and studies of statistical relations between /£s, the auroral activity index, and the local magnetic K-index were made. The sequential study shows that fEs increases with

auroral activity and reaches a maximum value of 5 to 10 Mc/s when the aurora is overhead. The statistical study indicates good correlation between the zenithal auroral

activity index and fEs, with a correlation coefficient of

0.544. 12 p. (Paper 66D5-218, p. 581). A comparative study of the correlation of seasonal and

diurnal cycles of transhorizon radio transmission loss and surface refractivity, B. R. Bean, L. Fehlhaber, and T- Grosskopf

Correlations between the surface refractivity, N s , and

transhorizon recordings of VHF radio transmission loss

are examined for 34 U.S. and 9 German radio paths. The

largest correlations are found to be associated with the seasonal cycle of nighttime recordings and diurnal cycles during the summer months. The annual cycles may be represented by a single regression coefficient of -0.18 db/N s for either night or day. The regression

coefficients for the diurnal cycles lie between -0.2 and -1.1 db/km and vary with distance and season, being

greatest between 175 and 200 kilometers and in the winter months. A promising method of estimating the wi thin-month distribution of hourly median transmission

loss is suggested by combining the seasonal and diurnal

correlation analysis. It is indicated that N s provides as

useful a prediction of diumal and seasonal variations of monthly median values of transmission loss as radio measurements made over the actual radio path in previous

years. 7 p. (Paper 66D5-219, p. 593). Enhancement of the lunar tide in the noon critical fre- quency of the E2 layer over the magnetic equator,

R. G. Rastogi The lunar semi-diurnal variations in the midday values

of the critical frequency (/0 E2 ) and the height of the

maximum electron density (& p E2

) are derived for the two

chains of equatorial stations in South America and India

for the period 1957-58. The latitudinal variation of the amplitude of the lunar semi-diumal variation in /0 E 2 snows a snarp maximum over the magnetic equator, in both

of the longitude zones. There is an indication of systematic variation in the amplitude with longitude along the magnetic equator, the maximum occuring in the South American zone (about 0.63 Mc/s) and the minimum in the Indian zone (about 0.33 Mc/s). Similar longitudinal variations have been indicated in the lunar semi-diurnal

variations of the horizontal component of the Earth's magnetic field. The latitudinal variation of the ampli- tude of the lunar semi-diurnal variation h

pF2 is opposite

to that of /0 Ej. The enhancement of the lunar variation

in the F1 layer ionization over the magnetic equator appears to be associated with the equatorial electrojet. 6 p. (Paper 66D5-220, p. 601). Scattering from a conducting sphere embedded in a semiinfinite dissipative medium, J. Galejs The conducting sphere is embedded in a semi-infinite dissipative medium and is excited by a surface wave or by vertical electric and horizontal magnetic dipoles from the lossless half-space. The sphere acts as a combination of horizontal magnetic and electric dipoles. Its dipole moment depends on the wave incident from the

interface of the two media and on the multiple reflections between the sphere and the interface. The transient

reflections are calculated after establishing the overall harmonic response of the system. 6 p. (Paper 66D5-221,

p. 607). High-frequency scattering from a coated sphere, V. H. Weston and R. Hemenger The scattered field produced by a plane wave incident on a perfectly conducting sphere coated with a thin layer of material with large complex index of refraction

is considered. It is shown that, for certain relations involving the thickness of the layer, and its permittivity and permeability, the scattering problem is equivalent to the problem wherein the total electric and magnetic field components must satisfy a general impedance boundary

condition on the outer surface. With this simplification the backscattered field is obtained in terms of the geometric optics portion and the diffracted field portion for small wavelengths. 7 p. (Paper 66D5-222, p. 613). Propagation of spherical waves through an ionosphere

containing anisotropic irregularities, K. C. Yeh

The propagation of a spherical wave through a medium

containing anisotropic random irregularities is considered. The formulation follows closely that of Karavainikov. The mean square deviations and the correlation functions

of the phase and of the logarithmic amplitude are derived

by assuming that the autocorrelation function of the di- electric constant is Gaussian with ellipsoidal symmetry. This form of autocorrelation function is chosen because

experimentally it has been found that irregularities in the ionosphere at heights of 300 kilometers are cigar- shaped with approximately Gaussian ellipsoidal symmetry. Methods of generalizing to other correlation functions are also indicated. 137
The theory is applied to a problem which is of particular

interest in the investigation of ionospheric irregularities by means of radio transmissions from satellites. Specifically the dependence of scintillation (phase and

logarithmic amplitude) on the height of the transmitter above a slab of irregularities and the dependence of the autocorrelation functions are investigated. The theory explains that the scintillation index should be relatively insensitive to the zenith angle of the satellite position

for a temperate latitude station, in agreement with the present preliminary observations. The theory also suggests that the observation of phase scintillation may

yield information concerning the physical location and

the thickness of the region of irregularities. 16 p. (Paper 66D5-223, p. 621).

November-December 1962 RF impedance probe measurements of ionospheric electron densities, J. A. Kane, J. E. Jackson, and H. A. Whale The Aerobee-Hi rocket, NASA 4.07, obtained vertical electron density profiles in the ionosphere simultaneously

by the Seddon CW propagation technique and by an RF

impedance probe technique. The experimental goal was

to assess the performance of the RF probe against the accurate values from the CW method. In the RF probe

method, the electron density N was derived from the di- electric constant K of the medium at a frequency /=

7.75 Mc/s. If the earth's magnetic field is neglected,

the relation between these quantities may be given as K= 1-(81N//2). An expression for the dielectric constant

including the effects of the earth's magnetic field is derived. The fractional error introduced by neglecting

the earth's field is of the order of (fH /f)

2 where fH is the electron gyrofrequency.

It was concluded that, with allowance for the positive

ion sheath around the rocket, the RF impedance probe can yield reliable values of electron density. These

values were obtained from changes in the capacitive part of the probe's impedance. Small, apparently anomalous

changes in the resistive part were also observed. 8 p. (Papej 66D6-224, p. 641). Methods for applying numerical maps of ionospheric

characteristics, W. B. Jones and R. M. Gallet A solution has recently been given [Jones and Gallet, 1962] to the problem of representing the complex vari- ations of ionospheric characteristics on a worldwide

scale, including their diurnal variation, by numerical

analysis of ionospheric data as measured at the stations, without prior hand operations. Whereas the paper referred

to above deals with "how to make numerical maps," the present is concerned with "how to use a numerical map"

once it has been obtained. Included are (1) a precise

definition of a numerical map, (2) efficient computing

procedures for applying numerical maps, including a general method for computing worldwide (or polar) contour maps in either universal time or local mean time, and (3) a large selection of graphical illustrations computed

automatically from a numerical map. 14 p. (Paper 66D6-

225, p. 649).

Very-low-frequency radio propagation in the ionosphere,

D. W. Swift Equations describing the propagation of radio waves

in a horizontally stratified anisotropic ionosphere were

developed by considering the limiting case of a large number of infinitesimally thin slabs of constant electron density and collision frequency. The quasi-longitudinal approximation was used. The propagation equations appeared as four coupled first-order linear differential equations, coupled by gradients in electron density and

collision frequency. The quasi-longitudinal approximation permitted use of particularly simple forms for the coupling coefficients, these forms being amenable to simple analysis. Coupling between two ordinary or two

extraordinary modes was found to be considerably stronger than cross coupling between ordinary and extraordinary modes. Cross coupling was related to the rate of change

of the direction of the phase normal. It was found that the reflection of VLF radio waves from the daytime iono- sphere is relatively insensitive to the angle of incidence on the ionosphere except for highly oblique propagation.

Whistler penetration was also found to be insensitive to the angle of incidence on the ionosphere. 18 p. (Paper

66D6-226, p. 663). Prolonged space-wave fadeouts in tropospheric propagation, A. P. Barsis and M. E. Johnson

This paper contains the results of studies performed

during the last several years on the short-term vari- ability of topospheric signals received over within-the- horizon paths in Colorado and California. Signal vari- ations of the type observed over such paths have been

termed "prolonged space-wave fadeouts." They are analyzed as a function of carrier frequency, path characteristics, and meteorological parameters. The study also includes an evaluation of fadeouts observed over a path using a mountain peak as a diffracting knife-edge obstacle between transmitter and receiver. Principal results show a stronger diurnal trend of fade- out incidence in continental climates than in maritime

climates. A significant dependence of the fadeout characteristics on the refractive index structure has been ob- served in maritime climates.

In general, fadeouts tend to be more frequent but of shorter duration for higher frequencies. There are also

indications that the occurrence of fadeout is well corre- lated on vertically spaced antennas. Thus, conventional space diversity techniques may not be effective to in- crease the reliability of systems operating over within- the-horizon paths. 14 p. (Paper 66D6-227, p. 681). Range-error compensation for a troposphere with exponentially varying refractivity, J. J. Freeman An explicit formula for topospheric range error is derived for a troposphere with a spherically symmetric

refractivity which varies exponentially with height. The

correction is given as function of surface refractivity and

ray elevation angle, and its accuracy and limitations are discussed. 3 p. (Paper 66D6-228, p. 695). On the geometrical optics of curved surfaces with periodic impedance properties, C. J. Marcinkowski and L. B. Felsen

In a previous publication, a two-dimensional Green's

function has been derived for a circular cylinder whose 138
surface impedance around the periphery deviates from a constant value by a sinusoidal variation of small amplitude a. Here, this solution is evaluated asymptotically

in the illuminated region under the assumption that the cylinder radius is large compared with the wavelength of

the incident field. The asymptotic result is interpreted

in terms of geometrical optics generalized to apply to cylindrically curved, convex reflection gratings, and

comprises the first and higher-order diffracted rays associ- ated with a plane grating, together with geometrical divergence coefficients accounting for the surface curvature. General properties of the spectrum of reflected rays are observed. The behavior of the first-order diffracted rays, and in particular their domain of exist- ence as a function of surface periodicity, is discussed

in detail. 7 p. (Paper 66D6-229, p. 699). On the limitations of geometrical optics solutions for curved surfaces with variable impedance properties, C. J. Marcinkowski and L. B. Felsen

In the preceding paper, the authors have presented an asymptotic solution for the field in the illuminated region

of a large circular cylinder whose surface impedance

around the periphery deviates from a constant value by a sinusoidal variation of small amplitude a. To 0(a), the reflected field comprises a specularly reflected ray and

two first-order diffracted rays characteristic of a curved convex reflection grating. If the surface impedance varies "slowly," these three rays can be combined into a single specularly reflected ray having a reflection coefficient which depends solely on the local impedance at the re- flection point. The "slowness" conditions necessary for the validity of this local reflection principle of geometrical optics are investigated and interpreted in physical

terms. The results are presented in a manner which

suggests their applicability to general, gently curved

surfaces with slowly varying impedance properties. 6 p. (Paper 66D6-230, p. 707). Conversion of the amplitude-probability distribution function for atmospheric radio noise from one bandwidth to another, A. D. Spaulding, C. J, Roubique, and W. Q. Crichlow The amplitude-probability distribution function of atmospheric radio noise can be predicted with reasonable accuracy for a given bandwidth using only the first two moments of the noise measured at that bandwidth. This paper presents a method for predicting this distribution function for any specified bandwidth from the moments of the noise measured at a particular bandwidth. 8 p. (Paper 66D6-231, p. 713). Some statistical properties of pulsed oblique HF iono- spheric transmissions, M. Balser and W. B. Smith A study is made of the amplitude fading of 35-fisec HF

pulses transmitted via the ionosphere over a 1,566-km

path between Atlanta, Ga., and Ipswich, Mass. The distribution functions for about half of the records taken fit the family of distributions for a sine wave in Gaussian

noise, with most of these best fitting the curve for pure noise (the Rayleigh distribution). Some examples of two

sine waves with random phase are observed. It is con- cluded that most of the remaining curves which do not fit these distributions correspond to samples of nonstationary

functions. The median fading time for one-hop paths is of the order of 20 seconds, and many examples occur

with considerably longer fading times. Multiple-hop paths

give fading times of a very few seconds. Space correlation distances are also considerably greater than ex- pected, averaging around 40 wavelengths, which corre- sponds to a mean angular deviation of the order of two

tenths of a degree. Many crosscorrelation functions show

peaks displaced in time from the origin, reflecting the

effect of ionospheric winds. 10 p. (Paper 66D6-232, p. 721). Induction in a small loop moving with a magnetostatic

dipole toward a conducting half space, M. 'B. Kraichraan A formal solution is obtained for the magnetic field produced by a vertical magnetostatic dipole which moves

in free space at a constant velocity along the normal to a conducting half space. When the velocity of the dipole

is much less than that of light, the field in free space is governed by Laplace's equation, and that in the con- ducting half space by the diffusion equation. An ex- pression in closed form is derived for the voltage induced

in a small loop moving with the dipole. For certain values of the parameters, simplified expressions are obtained for the induction. Numerical results are presented

for certain cases. 5 p. (Paper 66D6-233, p. 731). Propagation of terrestrial radio waves of long wavelengththeory of zonal harmonics with improved summation

techniques, J. R. Johler and L. A. Berry The rigorous mathematical treatment for the propagation

of a radio wave from a Hertz-dipole-source current- moment around a finitely conducting spherical earth surrounded by a concentric electron-ion plasma can be expressed as a series of zonal harmonics. Such a solution to the problem was obtained for the terrestrial sphere

without a concentric plasma many years ago (1904-1915). However, the summation of the series, even at long wavelengths or low frequencies, was considered to be impractical and the well-known and, indeed, rigorous Watson

transformation was introduced (1918). The Watson transformation led to the development of elegant mathematical techniques both rigorous and

approximate for the evaluation of the fields of radio waves in the vicinity of the earth. However, it does not necessarily follow that the Watson transformation is the only way to achieve numerical mastery of the problem.

Indeed, it also does not follow that the Watson transformation is the most efficient approach to the rigorous form

of the theory of propagation, especially at long wavelengths. This paper demonstrates that the field of the propagated

long wavelength radio wave (frequencies less than approximately 50 kc/s) can indeed be evaluated by a summation of a series of zonal harmonics. Whereas the number of terms could become quite large (of the order

of 10 &,a where a is the radius of the sphere and k l is the wave number of the medium between the concentric plasma

and the earth), the speed with which these terms can be summed on a large-scale computer offsets the complica- 13 9
tions introduced by the Watson transformation as to the rigorous mathematical solution of the problem. The detailed structure of the field in the absence of a concentric plasma is characterized by the quite regular behavior of the ground wave as a function of distance. Indeed, the steady decrement of the ground-wave field is modified only near the antipode, where an interference

pattern or standing wave as a function of distance is noted because of another wave's traveling around the sphere in the opposite direction. The introduction of the concentric electron-ion plasma

shell traps the waves leaking into space, where reflection from the plasma builds up traveling waves in the direction of increased distance from the transmitter. Thus,

the series of zonal harmonics comprises individual waves

which are traveling in the radial direction with respect

to the center of the sphere and standing in the direction

of increased angular distance around the sphere. These

waves, when summed, build up the wave progressing in the direction of increased angular distance. Under special circumstances, standing waves can be noted. This is especially obvious near the antipode of the transmitter. The results of the computations indicate that full rigor can be achieved with comparative ease at fre- quencies less than approximately 50 kc/s, leaving only

the assumed model for the transmitter and the propagation medium and avoiding the complications of the Watson

transformation. 37 p. (Paper 66D6-234, p. 737).

Terminal-zone corrections for a dipole driven by a twowire line, K. Iizuka and R. W. P. King The terminal-zone effects on the dipole antenna driven by a two-wire transmission line have been re-examined. A series inductive correction L. together with other terminal-zone corrections is found necessary to reduce

the measured apparent admittance of the antenna ter- minating the two-wire line with the ideal admittance of

the dipole antenna when driven by a delta-function generator. The series inductive correction takes account of

the absence of the antenna wire in the gap between the two wires of the transmission line. With this additional correction, the measured apparent admittance of a dipole antenna terminating a closely spaced two-wire line may be brought into excellent agree- ment with ideal theoretical values and also reconciled

with the quite different values measured with a coaxial

line for an antenna consisting of the vertical inner con- ductor of the line extended over a horizontal ground

plane. The results further show the utility of a delta- function generator in the definition of an ideal theoretical impedance of a dipole antenna. 8 p. (Paper 66D6-235,

p. 775).

Pattern synthesis with a flush-mounted leaky-wave

antenna on a conducting circular cylinder, A. Ishimaru and F. R, Beich This paper is concerned with the synthesis of a radi- ation pattern in an equatorial plane surrounding an

infinite circular cylinder. A discussion of the radiation

field about such a cylinder leads to the conclusion that a leakv-wave antenna can be utilized to provide the proper

aperture distribution. With ka chosen sufficiently large

to ensure that prior theory concerning the inductive sheet leaky-wave antenna will apply, a Chebyshev distribution

is analyzed. It is shown that the order of the Chebyshev

polynominal must satisfy N < ka cos <£0 sin 5^ , where cf> 0 is the angle of radiation measured from a normal to the cylinder surface, and SN

is the maximum deviation from

this angle. The radiation angle is given by 0o =arc

sin (p/k), where ,6 is a constant which is the phase factor of an X-band waveguide. Experimental work with such a waveguide, curved in the H plane and flush-mounted in a

finite cylinder with ka=\2n, provided radiation patterns which closely adhered to the theoretical analysis in the frequency range 8.4 to 11.5 Gc/s. 14p. (Paper 66D6-236,

P, 783). TITLE PAGE AND CONTENTS TO VOL. 66D. 7 p. PAPERS FROM THE JOURNAL OF RESEARCH, SEC- TION D. RADIO PROPAGATION, VOLUME 67D, JANUARY-DECEMBER 1963. January. February 1963 "A lunar theory reasserted"—a rebuttal, J. V. Evans

In a recent paper Siegel and Senior [1962] have criti- cized the attempts of Winter [1962] to account for the scattering behavior of the moon at radio wavelengths by means of a statistical description of the surface. Instead

they contend that their original theory [Senior and Siegel, 1959] when written was "in accordance with all the experimental data available at that time (and, incidentally since that time also) . . ." Experimental evidence is presented in this paper which is not in accord with Senior and Siegel's theory and which therefore invalidates the above statement. 4 p. (Paper 67D1-237, p.l).

Point-to-point communication on the moon, L. E. Vogler This paper presents a preliminary study of point-to- point communication systems on the surface of the moon. Ground wave propagation is assumed over a lunar model

consisting of a smooth sphere of homogeneous material

in free space and attenuation curves are presented for a wide range of electromagnetic ground constants. The

communication system is described in terms of the power

required at the input terminals of the transmitting an- tenna in order to obtain a given signal-to-noise ratio at the receiver. Discussions of antenna considerations and

noise effects are presented and an example is given of a system composed of a Beverage wave antenna trans- mitting towards a vertical electric dipole. For ground

conductivities on the order of 10~4 to 10~ mhos/m this example indicates an optimum frequency lying in the LF

band and a communication range out to somewhat beyond

100 kilometers, depending on the type of service desired.

17 p. (Paper 67D1-238, p. 5). HF communication during ionospheric storms, G. E. Hill A hypothetical communication network is set up to study systematically the problem of HF communications

during disturbed ionospheric conditions. Vertical inci- 140
dence radio data is used as the basis for determining the condition of the ionosphere. Frequencies and links available have been computed for a period of severe iono- spheric disturbance. Important spatial and temporal

variations are clearly evident by this analysis. A comparison of the results with recorded WWV reception indi- cates that ionospheric vertical incidence data can be used to determine propagation conditions during disturbed

periods. 8 p. (Paper 67D1-239, p. 23). Use of surface refractivity in the empirical prediction of

total atmospheric refraction, W. R. Iliff and J. M. Holt The use of a 1.9-cm radio sextant capable of precise

tracking of the sun has produced accurate measurements

of total atmospheric microwave refraction. These data

are used to verify the high correlation of such refraction with surface refractivity for low altitude angles. The

values of the correlation coefficients obtained vary from 92.2 percent at 16 degrees to 98 percent at 2 degrees. An empirical predictor is developed, based on this correlation, which satisfactorily accounts for the observed

refraction. The mathematical form of the predictor is given, and suggestions are made for its use. 5 p. (Paper

67D1-240, p. 31). Effective sunspot numbers, January 1961 through July

1962, W. B. Chadwick

It is proposed that the estimated smoothed annual sunspot number obtained by the method of a previous paper [Chadwick, 196l] be termed effective sunspot number. The series of such numbers is continued through July

1962. 2 p. (Paper 67D1-241, p. 37). On the theory of radio wave propagation over inhomo- geneous earth, K. Furutsu The formulas of field strength over an inhomogeneous

spherical earth are obtained on the conditions that (I) the radius and the electrical properties of the earth's surface discontinuously change several times along the wave path, or (II) the surface of terrain arbitrarily changes

in height along the wave path, but it is still smooth every- where and the radius of curvature is sufficiently large as compared with the wavelength. The case (I) is considered to be more general than those of mixed paths on a smooth earth, because the

latter can be seen as special cases of the former. The

case (II) corresponds to the case of multiple diffraction

of radio waves by several mountains having finite radii of curvature. In both cases, the unified formulas of field strength are obtained in the form of a multiple residue

series, which is reduced to the ordinary Van der Pol and Bremmer formula in the special case of homogeneous

ground. The convergence of series of the formulas is very good when the propagation distance on every section of the inhomogeneous ground is long enough or the diffraction loss is large enough, and is poor when any one of these distances is so short that the section is effectively seen

as a flat plane, or the diffraction loss on the section is very small. In these cases, the flat earth or other approximations can be used, and several supplementary

formulas are prepared for cases of poor convergence.

Several special applications are given. 24 p. (Paper

67D1-242, p. 39).

Correction to "fields of electric dipoles in sea water-the

earth-atmosphere-ionosphere problem", W. L. Anderson A recalculation of the numerical results presented in figure 3 of the paper, "Fields of Electric Dipoles in Sea Water-The Earth-Atmosphere-Ionosphere Problem" has shown that values for the mode solutions, E\p (v,m) and Elpf^were i n error Corrected figures show the hori- zontal to be superior to the vertical dipole over the entire range of 1-1000 c/s, by virtue of the mode solution 1 p (Paper 67D1-243, p. 63). Composition of reflection and transmission formulae,

J. Heading An integral equation for the electric field in a continuously stratified ionized medium is derived; this is then manipulated to yield equations for the reflection and

transmission coefficients, at the same time being susceptible to physical interpretation. The equations are solved by successive approximations, the first terms

being Fresnel-type coefficients. Various applications

of the results are discussed. 13 p. (Paper 67D1-244,

p. 65). Titheridge coefficients for the polynomial method of deducing electron density profiles from ionograms,

A. R. Long and J. 0. Thomas

Sets of Titheridge polynomial coefficients suitable

for the conversion into electron density profiles of smooth

virtual height frequency curves, such as those observed

regularly at night, are presented for a series of values

of the magnetic dip angle and gyrofrequency. These

magnetic conditions have been chosen so that the coefficients are suitable for the analysis, to a reasonable

degree of accuracy, of ordinary and extraordinary ray records obtained anywhere in the world. The coefficients may be used for the analysis of topside-sounder data to a first order of accuracy if the plasma frequency at the satellite is small. 4 p. (Paper

67D1-245, p. 79). Input admittance of linear antennas driven from a coaxial

" line, T. T. Wu

In two cases of a linear antenna driven from a coaxial

line, it is shown that the apparent terminal admittance to the coaxial line can be additively separated into two

parts when the transverse dimensions are small compared with the wavelength. One of these two parts de- pends only on the wavelength and the dimensions of the antenna, while the other part can be interpreted as a capacitance that depends only on the radii of the coaxial

line. This capacitance may be found exactly from the solution of an integral equation, in the sense that further corrections cannot be interpreted simply as a capacitance. 7 p. (Paper 67D1-246, p. 83). March - Apri 1 1963 The protection of frequencies for radio astronomy, R. L. Smith-Rose The International Telecommunications Union in its Geneva, 1959 Radio Regulations recognizes the Radio Astronomy Service in the two following definitions: 141
No. 74 Radio Astronomy: Astronomy based on the reception of waves of cosmic origin. No. 75 Radio Astronomy Service: A service involving

the use of radio astronomy. This service differs, however, from other radio services

in two important respects.

1. It does not itself originate any radio waves, and

therefore causes no interference to any other service.

2. A large proportion of its activity is conducted by

the use of reception techniques which are several orders

of magnitude more sensitive than those used in other

radio services.

In order to pursue his scientific research successfully,

the radio astronomer seeks protection from interference

first, in a number of bands of frequencies distributed throughout the spectrum; and secondly, more complete and specific protection for the exact frequency bands in which natural radiation from, or absorption in, cosmic

gases is known or expected to occur. The International Regulations referred to above give

an exclusive allocation to one frequency band only-the

emission line of hydrogen at 1400 to 1427 Mc/s. In all other cases, allocations are made on a basis of sharing

with other radio services. Considering the expensive nature of the equipment in use and under development by radio astronomers through- out the world, it is important that the protection of certain bands of frequencies for this science should receive

serious attention by all those engaged in both local and

worldwide radio services. 7 p. (Paper 67D2-247, p. 99). Radar reflections from the moon at 425 Mc/s, G. H. Millman and F. L. Rose

The characteristics of the lunar surface deduced from radar-lunar measurements conducted at the U.S. Air Force Trinidad Test Site during I960 are discussed. Evidence is presented which tends to confirm that, at 425 megacycles per second, the front portion of the moon

is a comparatively smooth reflector while the back portion behaves as a rough scatterer. The pulse decay of the average envelope of lunar echoes is found to follow the slope of the LommelSeeliger scattering law. From the cumulative probability distributions of the

total cross section of the moon measured on two different days, it is indicated that 50 percent of the total cross

section measurements were less than 5.0 to 8.5 x 10"

square meters or 117.0 to 119.3 decibels above one

square meter.

Statistical data, such as the probability density functions of the total lunar echo amplitude and the autocorrelation function, are also presented. The power density spectrum computed from the autocorrelation function is compared with the theoretical Doppler spread resulting from the moon's libration. 11 p. (Paper 67D2-248, p. 107).

Sunset and sunrise in the ionosphere: effects on the propagation of longwaves, J. Rieker The purpose of this study, which is based on photo- graphic recordings showing the phase shift of two

signals-i.e. , GBR transmitted from Rugby (England) on 16 kilocycles per second and NBA transmitted from Balboa

(Panama) on 18 kilocycles per second, both received at the Neuchatel Cantonal Observatory (Neuchatel, Switzerland), is twofold:

(1) To investigate the mode of propagation of the GBR and NBA signals.

(2) To study the relation between the time of sunrise, respectively sunset at various ionospheric reflection points and the times at which phase fluctuations appear

on the recordings. The author then generalizes the notion of the times of sunrise, respectively sunset by introducing the closely related concept of the zenithal distance Z of the sun at the reflection points considered. Following results published in literature, reflection point altitudes were assumed to be about 70 kilometers

during the day. Results were such that:

(a) For the GBR signal; only a one-hop mode is avail- able, night reflection altitudes varying between 88 and 91 kilometers on individual recordings, angles of incidence

<f> on the ground between 7

a 36 • and 10*25 . (b) For the NBA signal; a five-hop mode is available, night reflection altitudes varying between 80 and 84

kilometers on individual recordings, angles of incidence

4> on the ground between 0°27 and 114 . (c) At sunrise, respectively, sunset, computed zenithal distances for one and the same reflection point at times

identical with singularities appearing on successive re- cordings show a striking analogy.

(d) During one and the same sunrise or sunset, the zenithal distances computed successively for various

reflection points and related to singularities read on a same recording present also a striking analogy.

(e) The time of onset of ionizing radiation at all night

reflection points seems to be of major importance for both the propagations of the GBR and NBA signals. During sunset, the altitude of the day reflection point which was stabilized at around 70 kilometers increases as soon as the zenithal distance of the sun exceeds 90°. At sunrise, on the other hand, the altitude of the reflection point stabilizes at around 70 kilometers, when the zenithal distances of the sun reach or go below 90°.

(f) In the case of the NBA signal a phase fluctuation already occurs at a zenithal distance of about 103°, especially at sunrise. At that moment, the distance between the reflection point and the layer formed by the ionizing radiations of the sun is about 100 kilometers.

(g) At sunrise, the curves showing the energy of the received signals display the following features: For a one-hop mode (Rugby), a momentary strong absorption when the reflection point altitude reaches 82

kilometers; in the case of several ionospheric reflections (Balboa), a succession of absorption lines corresponding

to the successive diminishing of the altitude of the iono- spheric reflection points.

(h) At sunset, the interpretation of the energy is more

delicate: For a one-hop mode (Rugby), a momentary increase occurs in the energy of the signal before the night level

of reflection is reached; in the case of a five-hop mode

(Balboa), the interpretation of the absorption curve is difficult because five ionospheric reflection points change

their altitude and the resulting phase fluctuations become

entangled. 20 p. (Paper 67D2-249, p. 1 19). Correction of atmospheric refraction errors in radio height finding, W. B. Sweezy and B. R. Bean

Atmospheric refraction errors in height finding radars are studied by means of detailed refraction calculations 142
for a wide range of meteorological conditions. For tar- gets up to 70,000 feet above ground and 150 miles ground

distance from the radar site, the mean height error was

found to be as much as 5,000 feet with a standard deviation of 1,200 feet. A correction for the surface value of

the refractive index at the radar site would eliminate the mean height error and reduce the maximum standard deviation to less than 900 feet. An additional correction for the initial gradient of the refractive index and the value

of the refractive index at one kilometer above the surface would reduce the maximum standard deviation to less

than 400 feet. Methods of correcting height errors based

on available meteorological data are presented and shown

to be operationally practical. 13 p. (Paper 67D2-250,

p. 139). Empirical determination of total atmospheric refraction

at centimeter wavelengths by radiometric means,

A. C. Anway

The experimental procedures and data analysis methods

used in the determination of total atmospheric refraction by radiometric means are described. The results of five months' observation are presented in plots of the mean

refraction, its standard deviation, and standard error of estimate for specified altitude angles between 2 and 65

degrees. The a.m. values of refraction are significantly greater than those of the p.m. at the same altitude angle. This effect is attributed to the diurnal cycle. The

measured total refraction exhibits a strong linear correlation with surface refractivity. 8 p. (Paper 67D2-251,

p. 153). Propagation of radio frequency electromagnetic fields in geological conductors, V. Fritsch Propagation of radiofrequency electromagnetic fields

in conducting spaces has been the subject of extensive

theoretical investigations. Still, the knowledge gained

cannot always be applied directly to propagation in the upper strata of the earth. The reason for this is that these strata consist of geological conductors which are arranged in a complicated way. One can, of course, give

specified values of conductivity and dielectric constant

for geological conductors, and apply these to subsequent

calculations. But most theoretical investigations apply

either to homogeneous spaces or to spaces having an

electrically simple structure. However, the electrical structure of the spaces occupied by geological conductors is almost always very complicated. If this fact

is not taken into account sufficiently, one can never

obtain agreement between experimental results and

theoretical calculations. The author, who has been

dealing with these problems for many years, is trying here to provide a survey of the inherent difficulties due

to the complicated structure of geological conductors. Although the pertinent factors have been only very in- adequately investigated up to now, it is hoped that

further investigations can be stimulated by this dis- cussion. 18 p. (Paper 67D2-252, p. 161). WWV reception in the Arctic during ionospheric dis- turbances, G. E. Hill and J. R. Herman

Reception of WWV at four high-latitude stations is compared with ionospheric data during a period of severe

ionospheric storminess. It was found that the reception quality of WWV closely follows the morphology of

the disturbance. Reception at the lower frequencies was

affected primarily by the PCA event and auroral-zone

absorption, while at the higher frequencies reception de- pended upon the storm-time behavior of the F region. Also, reception was strongly affected for several hours

during the storm by the appearance of a large sporadic-F

cloud. Despite the fact that reception quality was as- sessed by aural monitoring, agreement between the re- ported WWV reception and that which would be expected

from the ionospheric data is rather good. It is concluded

that the behavior of radio reception can be explained on

the basis of the space-time variations in ionospheric

parameters. 4 p. (Paper 67D2-253, p. 179). Height-gain for VLF radio waves, J. R. Wait and K. P. Spies The height dependence of the field strength of VLF

radio waves is considered. Using previously developed

theory, the height-gain function of the first two modes is calculated in terms of Airy functions of complex argu- ment. It is indicated, for frequencies of the order of 25 kilocycles per second, that the height-gain function reaches a maximum value at a height of the order of 40

kilometers when the reflecting layer is about 70 kilo- meters. The form of the height-gain function is also shown to be dependent on the finite conductivity of the ground. An experimental curve for 18.0 kilocycles per second based on a rocket measurement shows some

agreement with the theory. 5 p. (Paper 67D2-254,

p. 183). Perturbation method in a problem of waveguide theory, D. Fox and W. Magnus

The reflection coefficient for the basic mode in a widening, straight, two-dimensional waveguide is computed for small wave numbers by using the perturbation method with the electrostatic case as the unperturbed

case. The problem is treated as a perturbed infinite sys- tem of inhomogeneous linear equations, and it is shown

that the matrix of the unperturbed system (which corre- sponds to the electrostatic case) can be inverted explicitly by using conformal mappings and physically

unrealistic modes. Questions of convergence are dis- cussed, and other examples for application of the method

are indicated. 10 p. (Paper 67D2-255, p. 189). Some wave functions and potential functions pertaining

to spherically stratified media, C. T. Tai The wave functions pertaining to a bilinearly stratified medium are presented in tins paper. Solutions to the equation A , [x(r)i/'] = 0 have been investigated for several

profiles of k{t). An analysis is given to the equation A • [k -A if/] =-p/e 0 which arises from the formulation of the quasi-static electric field in a homogeneous anisotro- pic medium. 4 p. (Paper 67D2-256, p. 199). Radiation from a plasma-clad axial ly-slotted cylinder, W. V. T. Rusch

Expressions have been developed for the complete

radiation pattern from a finite axial slot on an infinite 143
circular cylinder covered with a homogeneous, uniform plasma sheath. The resulting field expressions are functions of both the longitude angle, <f>, and the polar angle, d. Numerical results have been obtained for a

thin lossless plasma to determine the variation of the

field pattern with plasma frequency, plasma thickness,

slot width, and cylinder radius. These results are pre- sented graphically to illustrate various properties of the radiating system. 12 p'. (Paper 67D2-257, p. 203). Two- and three-loop superdi recti ve receiving antennas,

E. W. Seeley The characteristics of two- and three-loop superdirective antenna arrays are presented. At VLF, this type of array appears to have many desirable qualities, and the usual detrimental characteristics associated with

superdirectivity are less in evidence. It is shown that the beamwidth is narrowest, the front-to-back voltage and power ratios are greatest, and the position of the back

lobes and nulls are most invariant when closely spaced

loops are used. Inequalities in signals from the indi- vidual loops tend to obscure the front and back lobes and

limit the proximity of the loops. 21 p. (Paper 67D2-258,

p. 215). Hallen's method in the problem of a cavity-backed rec- tangular slot antenna, J. Galejs The integral equation for the electric field distribution

in the slot which is excited by a current source at its center is solved for the longitudinal field variation by Hallens iteration method. The first order solution of the

slot susceptance provides an agreement with computations based on the variational method for cavities as

shallow as A, 20 provided the slot length exceeds A/2. There is no agreement for very shallow cavities, where

the fields are rapidly attenuated along the slot according

to the variational solution. A simple closed-form approximation to the susceptance is applicable if the slot and

the cavity are of equal lengths. The first-order slot con- ductance is accurate only for approximately A/2 long

slots which are backed by deeper cavities. 8 p. (Paper 67D2-259, p. 237). Relative convergence of the solution of a doubly infinite set of equations, R. Mittra The paper deals with the relative convergence of a

doubly-infinite set of equations pertaining to a boundary

value problem in a waveguide. It is shown that the solution for the equations converges differently for different choices of the combination of the number of equations

from the two sets. This is demonstrated by studying the convergence properties of the truncated set of equations

as the number of equations is made indefinitely large.

It is proven that the solution for the reflection coefficient becomes identical with the exact solution only with a particular choice of the ratio of the equations. This

choice of the unique ratio is also shown to be consistent

with the edge condition. 10 p. (Paper 67D2-260, p. 245). May-June 1963

Effects of radio wave propagation through mid-latitude 6300 A auroral arcs, J. R. Roach

Very high frequency radio signals propagated from a

polar orbiting satellite through a system of multiple 6300

A red auroral arcs are shown to be strongly perturbed by each arc. The perturbations are characterized by ampli- tude scintillation of the received signal. The scintillation power correlates logarithmically with the arc photon

flux, as derived from the photometric observations. The

red arcs and radio scintillations were observed on the night of 12/13 November I960, during which a major magnetic storm was in process. Similar measurements on

the quiet magnetic night of 18/19 February 1961, revealed no appreciable radio scintillation or red arc activity. 9 p. (Paper 67D3-261, p. 263). Comparison of observed atmospheric radio refraction effects with values predicted through the use of sur- face weather observations, B. R. Bean and G. D. Thayer

Past theoretical work has shown that it should be

possible to estimate the atmospheric refraction of radio waves quite accurately simply from a knowledge of the

radio refractive index at the surface of the earth. Prediction equations have been developed for use in esti- mating both elevation angle errors and radio range errors by means of performing linear regressions of ray-traced

refraction variables on the values of surface refractivity, N s , for a standard sample of radio refractivity profiles.

In this paper the accuracy of these prediction equations

is examined through a comparison with some precise measurements of total absolute refraction made with a radio sextant by the Collins Radio Company, some

absolute elevation angle error measurements made at White Sands Missile Range in the lower atmosphere, and measurements of both relative elevation angle error and

relative range and range difference errors made over

various paths in the lower atmosphere. The validity of

the refractive index profile sample used is confirmed

through a test on some independent data obtained from

four locations well outside the area of selection of the

original sample. All results are shown to be consistent

with the theoretical prediction model. 13 p. (Paper

67D3-262, p. 273). Ionospheric scattering effects in long-distance propagation, H. A. Whale A statistical theory of the behavior of rays scattered

at successive ionospheric reflections in propagating around a spherical earth is given. The theory predicts

the properties of the antipodal area, the deviation of bearing to be expected at places off the main transmitting beam and the spread of the incoming fan of rays at

all distances. Special properties appear to be associated with reception at an angular distance of about 255

from the transmitter. The effects of an absorbing region on the received direction and spread of rays are dis- cussed. 10 p. (Paper 67D3-263, p. 287). Concerning solutions of the VLF mode problem for an

anisotropic curved ionosphere, J. R. Wait The influence of earth curvature in the theory of

reflection from the ionosphere is considered. By choosing

a rather idealized model, the significance of usual earth- flattening procedures can be displayed quite readily. To

simplify the analysis, it is assumed that the earth's 144
magnetic field is vertical everywhere. It is shown that the curved ionosphere may be represented by homogeneous planar slabs, provided the local value of layer curvature is used. The results in the present paper are compared with some corresponding expressions obtained

by Johler and Berry [1962]. 6 p. (Paper 67D3-264, p. 297). V On the statistical theory of electromagnetic waves in a

fluctuating medium (I), K. Furutsu The subject of electromagnetic wave scattering by a randomly varying medium is reviewed giving special emphasis to the technical method of approach. The

symbolic representation of Maxwell's equations is intro- duced to make it easier to survey the whole subject and

to formulate the equations. The Feynman diagram method

is applied to the computation of the correlation of the

fields at different points in space to any order of approximation. The differential equation to be satisfied by the

latter correlation function is also derived from another

point of view. Then the theory is developed on the "renormalization" of the constants, i.e., the effective propagation constant in a fluctuating medium and the ef- fective coupling constant between the field and the medium, etc.; the explicit expression of the former is obtained to the first order of approximation. The dis- persion relation is derived as a connected problem. In Part II of this series of papers, a fundamental theory of

statistics of the electromagnetic field in a fluctuating medium will be developed. In Part III, a few applications to tropospheric scattering will be given. 21 p. (Paper 67D3-265, p. 303). Reception of sky wave signals near a coastline, J. B. Andersen An experimental investigation has been made on the influence of ground inhomogeneities on the reception of skywave signals, especially the influence of the conductivity contrast near a coastline. This gives rise to a rapid decrease in field strength near the coastline as

is well known from groundwave mixed path theory. Comparison with theory is given. Influence of diffuse

reflection from the ionosphere is also considered. 6 p. (Paper 67D3-266, p. 325). Analysis and synthesis of nonuniform transmission lines

or stratified layers, G. Latmiral, G. Franceschetti, and R. Vinci guerra Nonuniform lossless or lossy transmission lines or layers used as broadband matching or absorbing devices

are studied. When the refraction index, n(x), and the characteristic impedance Z/x), are given, the refraction spectrum,

p„(>7) = p 0(4n/k), for x = 0 can always be computed by solving numerically a Riccati differential equation (RDE).

(Analysis) Conversely, not only for n = const [Bolinder, 1950,

1956] but also for n(x) real and pi = y. 0 , a tapered trans- former can be synthesized starting from a given p a(r}) spectrum by using Fourier transform techniques. (Synthesis) For broadband absorbers, the synthesization procedure

can be approximately applied, under certain conditions,

to only the part of the spectrum which represents the reflection of the matched (lossy) line. 15 p. (Paper

67D3-267, p. 331).

Resonant characteristics of a corrugated sphere, J. R. Wait and C. M. Jackson The radiation from a radial electric dipole on the sur- face of a corrugated sphere is treated. It is shown that the power radiated in a given mode depends critically on

the surface reactance and the circumference of the sphere. In fact, for certain values of these parameters,

particular modes are strongly excited and contain most

of the power. Such a structure can be regarded as an

external resonator and its resonant characteristics are a function of the refractive index of the surrounding medium. This opens the possibility that a surface-wave

spherical resonator may have important applications to refractometry. 7 p. (Paper 67D3-268, p. 347). Impedances of long antennas in air and in dissipative media, D. W. Gooch, C. W. Harrison, Jr., R. W. P. King, and T. T. Wu

Graphs are provided for the normalized impedance of center-driven cylindrical dipole antennas when immersed

in air or in a dissipative medium. The electric half- length ranges from 1 to 100 for dipoles in air and from

1 to 19.7 for dipoles in a dissipative medium. Three

ratios of radius of the antenna to wavelength have been

used. The properties of the medium are expressed in terms of the ratio a//S in the range from zero to one

where ^3 and a are, respectively, the real and imaginary

parts of the complex propagation constant k. 6 p. (Paper

67D3-269, p. 355). Reflection of VLF radio waves from an inhomogeneous

ionosphere. Part I. Exponentially varying isotropic model, J. R. Wait and L. C. Walters The oblique reflection of VLF radio waves from a continuously stratified ionized medium is considered. The

profile of the effective conductivity is taken to be of an exponential form. This is a fair representation for the actual D layer of the ionosphere. It is shown that the gradient of the conductivity change has a marked effect on the reflection cha-racteristics. 7 p. (Paper 67D3-270,

p. 361). July-August 1963 Influence of the lower ionosphere on propagation of VLF

waves to great distances, J. R. Wait

Theoretical attenuation and phase characteristics at VLF are presented for a number of idealized models of the lower ionosphere. The results indicate the limitations

of the sharply bounded model. 7 p. (Paper 67D4-271, p. 375). Comments on a paper 'Auroral Sporadic-E Ionization' by

R. D. Hunsucker and L. Owren, J. M. Bullen and

G. A. M. King

2 p. (Paper 67D4-272, p. 383). Reply to J. M. Bullen and G. A. M. King's "Comments on

a Paper 'Auroral Sporadic-E Ionization' by R. D. Hunsucker and L. Owren", R. D. Hunsucker and L. Owren

2 p. (Paper 67D4-273, P- 385). 14 5
Optimum reception pattern of the beverage wave antenna

at very low frequencies, E. W. Seeley The theoretical reception pattern characteristics of the wave antenna at VLF, plus an experimental study of the parameters that determine the patterns, are presented. Wave antennas have optimum lengths where the front-to- back ratio is greatest. The first optimum length (highest

front-to-back ratio for the shortest length) is considered

in this paper. The patterns of the wave antenna at these optimum lengths depend upon only two parameters which

can easily be measured at the desired antenna location. These two parameters are the antenna loss and the wave

velocity along the antenna. When these two parameters

are known, the patterns of all first optimum length wave

antennas can be sketched from the curves in this paper. 9 p. (Paper 67D4-274, p. 387). Effect of a dissipative medium of finite size on antenna measurement, K. Iizuka and R. W. P. King An experimental investigation was made of the driving- point admittance of a dipole antenna immersed in a finite dissipative medium in order to obtain fundamental information about the dependence of the admittance upon the size

of the medium. This information is intended to assist in determining the size of a tank filled with a dissipative medium for use in studying the properties of antennas in such a finite medium. The effect of reflections from the side and back walls was investigated quantitatively by means of sixteen tanks

of different sizes. It was shown that a shift in the position of an antenna from the center of the tank is equivalent

to enlarging the dimensions of the tank. A resonance phenomenon was observed and studied in terms of (a) the distortion of the admittance curve as a function of the size of the tank, (b) the distribution of the current on the antenna, (c) the frequency characteristic of the field in- tensity inside the tank, and (d) the sensitivity of the sys- tem to perturbation. Certain precautions to be taken in the design of a dissipative-solution-filled tank are dis- cussed briefly. 7 p. (Paper 67D4-275, p. 397). Some implications of aircraft interference patterns in troposcatter reception, J. A. Bradshaw

Aircraft interference patterns in troposcatter signal records betray the plane's velocity across the link axis. The patterns also reveal the phase variations in the normal

signal path. Similarly, the spectra of records free of air- craft patterns reveal the cross-axis velocity of winds aloft. The amplitude distributions of such records often come

close to the Rayleigh model but do not follow weather

parameters closely. The distributions of ratios and prod- ucts of correlated amplitudes also fit the Rayleigh model

in records free of aircraft reflections, lip. (Paper 67D4-

276, p. 405).

Asymptotic behavior of the current on an infinite cylindri- cal antenna, K. S. Kunz An asymptotic expression is obtained for the current

distribution on the outside surface of an infinitely long, perfectly conducting, hollow cylindrical antenna that is

fed by an infinitesimally narrow circumferential gap. This

asymptotic expression involves two series. The first series

is expressed in reciprocal powers of log (2\z\/ jT2ka 2

), where \z\ is the distance from the gap, log T is Euler's

constant, k is the propagation constant, and a is the radius of the antenna. The second series is a similar

series multiplied by l/(&|z|). The first series is dominant and its first five terms yield values for the magnitude and phase of the current that for even moderately thick anten- nas (circumferences as large as A/3) are accurate to within about one percent in as close as A/3 of the gap. This

is shown by a comparison of the values of. the current obtained from these terms with the numerically computed

values of Duncan [1962]. Asymptotic expressions for the current found in the literature resemble the first term of

this dominant series and are accurate only at relatively large distances from the gap—except for very thin antennas. 15 p. (Paper 67D4-277, p. 417). A dipole approximation of the backscattering from a con- ductor in a semi-infinite dissipative medium, M. B. Kraichman The backscattering of a uniform plane wave by a conductor in a semi-infinite dissipative medium is discussed. The conductor is assumed to act as both an electric and

a magnetic dipole with moments which are obtained from

the electric and magnetic polarizabilities of the conductor,

respectively. Using these induced moments, expressions

are derived for the backscattered electric field at a point on the surface of the dissipative half-space directly above

the dipoles. Both harmonic and transient excitation are considered, lip. (Paper 67D4-278, p. 433). Small electric and magnetic antennas with cores of a lossy dielectric, J. Galejs A small loop antenna which is wound on a spherical

dielectric core is compared with a cylindrical dielectric

filled capacitor. Both antennas provide comparable radi- ation resistance and reactance for equal antenna volumes. The electric field near the loop is weaker than in the

vicinity of the capacitor. This makes the efficiency of the loop less affected by the presence of a lossy dielectric core. For equal efficiencies and volumes of both antennas,

the loss tangent of the dielectric in the loop antenna may

by higher than that of the comparable capacitor type by a factor of at least [A./(2to?)] 2 where a is the antenna radi- us. Practical design problems are discussed and an ap- proximate method for estimating the losses in loop cores

of arbitrary shape is presented. 7 p. (Paper 67D4-279,

p. 445).

September— October 1963

Ionospheric VHF scattering near the magnetic equator

during the international geophysical year, R. Cohen

and K. L. Bowles

General results and statistical studies of equatorial VHF oblique ionospheric scatter signals are presented for one calendar year of the International Geophysical Year. 146
The equatorial scatter signals were usually stronger than

their counterparts at temperate latitudes. Scattering was

observed comparable to the D-region scatter propagation

familiar elsewhere, but usually the E-region scatter pre- dominated. Scattering via F-region irregularities was ob- served at nighttime over a 2580 km path centered about

the magnetic equator. The intense daytime equatorial E-region scattering was

established to be largely due to irregularities associated

with the equatorial electrojet. Its communications potentialities appear promising for paths having midpoints within a 10° band of latitude centered about the magnetic

equator. When the D-region scattering was distinguishable, it usually appeared to be stronger than that over similar paths at temperate latitudes. However, during the daytime

over a path centered just at the magnetic equator, this comparison is just the opposite. Relatively strong scattering from irregularities in the E region was also observed at nighttime, with the result

that the weakest signals received diurnally over the equatorial paths were comparable to the strongest signals propagated over similar paths at temperate latitudes. Both the daytime and nighttime scattering via E-region

irregularities exhibited an asymmetry about the magnetic

equator, being stronger for a path midpoint 5° south of

the magnetic equator than for a midpoint a similar dis- tance to the north. 22 p. (Paper 67D 5-280, p. 459). Radio pulse propagation by a reflection process at the lower ionosphere, J. R. Johler The groundwave pulse has been considered in detail by Johler [1962, 1963b]. A theory was presented as a direct numerical and analytic evaluation of the Fourier transform

integral. Such a theory can be extended to treat pulsed

ionospheric waves. The reflection process for various model anistoropic ionospheres has been studied in detail in previous papers by Johler [1962]. The analysis of the reflection coeffi- cient thus demonstrated is employed to construct transfer functions for the ionospheric wave. These transfer functions are then introduced into the Fourier transform of the pulse, and the behavior of LF pulses propagated by a reflection process at the ionosphere is determined for three models for the lower ionosphere. The composite

ground and ionospheric pulse is formed, and a method of tagging a point-in time on the pulse is detailed. 19 p. (Paper 67D5-281, p. 481). Field of a horizontal magnetic dipole in the presence of a magnetoplasma halfspace, G. Tyras, A. Ishimaru, and

H. M. Swarm

In the present paper we consider the problem of a hori- zontal magnetic dipole situated in or out of a lossy magnetoplasma halfspace when the magnetostatic field is parallel to the axis of die dipole. The rigorous formulation of the problem is carried to the point where the determination of the pertinent boundary coefficients re- mains to be a straightforward but not a simple algebraic process. Due to the prohibitive algebraic complexity in- volved in the explicit finding of the boundary coefficients,

a high frequency approximation is introduced and the ap- proximate form of the boundary coefficients found. The

field integrals are evaluated in the air region for the condition when the observation point is at a large distance

from the source. The results are applied to finding the radiation pattern in the air due to a magnetic dipole situ- ated near the lower edge of the ionosphere. It is found

that the most important correction due to the earth's magnetic field occurs near the interface and parallel to the axis of the dipole. 17 p. (Paper 67D5-282, p. 501). Reflection of VLF radio waves from an inhomogeneous

ionosphere. Part II. perturbed exponential model, J. R. Wait and L. C. Walters ine oblique reflection of radio waves from a continuously

stratified ionized medium is considered. In this paper

the medium is assumed to be isotropic. The height profile of the effective conductivity is a Gaussian curve super- imposed on the (undisturbed) exponential form. The re- flection coefficient is shown to be influenced by the vertical location of the Gaussian perturbation. In some

cases the magnitude of the reflection coefficient is in- creased while, in other situations, it is decreased. In nearly all cases, insofar as phase is concerned, the pres- ence of the perturbation corresponds to a lowering of the

reflection height. 5 p. (Paper 67D5-283, p. 519).

Collisional detachment and the formation of an ionospheric C region, E. T. Pierce A simple expression is derived for the collisional de- tachment coefficient in terms of pressure, temperature, and the electron affinity, Ea , of the Oj ion. By using

this expression, it is calculated that at night the profile of electron density against height has a maximum near

the stratopause at 50 km. The magnitude of the electron density at the maximum depends critically upon £a . If the probability of detachment approaches unity for molecular energies exceeding E a , it may be deduced that Ea must be at least greater than 0.45 ev. Some comments are made on the conflict, in considering stratospheric ionization, between the concepts of ionospheric physics and

those of atmospheric electricity. 8 p. (Paper 67D5-284,

p. 525). Magnetic torques and coriolis effects on a magnetically suspended rotating sphere, J. C. Keith The tendency for the spin axis of a conducting ferro- magnetic sphere to aline eventually with a steady uniform

external magnetic field, and the effect of absolute rotation of the frame of reference are considered. If the frame of reference is stationary with respect to free space, and if the initial angle from the magnetic axis is small and equal

to d9 at r = 0, then 6=&0 e- t/T thereafter, where r is a function of the imaginary part of the complex susceptibility and the square of the magnetic field (7). However, on

the Earth's surface, a constant hang off angle is found, which for small 6 is approximately (fi earth r) sin 6 earth

(l + (Sp/g)2 )- 1/2 where p and q are the real and imaginary

parts of the complex susceptibility, and &p involves both

the normal and incremental permeabilities. For any one

spin frequency, this results in a constant decay of the sphere's energy (13). 6 p. (Paper 67D5-285, p. 533). 14 7
Radiation field characteristics of lightning discharges in the band 1 kc/s to 100 kc/s, W. L. Taylor The groundwave portion of atmospheric waveforms was

examined to determine various characteristics of the radi- ation field from lightning discharges. Sixty-nine repre- sentative waveforms were selected from 1,029 atmospherics from 21 thunderstorms in the Oklahoma and North Texas area. The average amplitude and phase spectra, from 1 kc/s to 100 kc/s, are presented for several groups

of atmospherics having distinguishable characteristics. Various relationships involving the total radiated energy, peak field strength, first half cycle length, spectral amplitude peak and frequency of spectra peak are presented. The "normal" type of atmospheric, composing 86 percent

of the total, is predominately of positive initial polarity, has a spectrum peak near 5 kc/s and has well defined

relationships between the parameters mentioned above.

All "other" types of atmospherics are predominately of negative initial polarity, have a spectrum peak from less than 1 kc/s to 18 kc/s and have no well defined relation- ships between the various parameters. 12 p. (Paper

67D5-286, p. 539). Low-frequency radio propagation into a moderately rough

sea, D. F. Winter Radiation from primary current sources above or at the interface of a homogeneous conducting dielectric half space has been studied extensively in connection with

various communications problems. In many cases of practical interest, however, the surface bounding the conducting medium is irregular in configuration, the local deviation of the interface from the average being a function of position and time. The present paper describes a method

for determining the effect of interface irregularities upon

low-frequency electromagnetic fields propagated within such a conductor. The electric field at a point within the medium is ex- pressed as a stochastic integral over the bounding surface using the method of Stratton and Chu. As a consequence

of certain restrictions which are principally geometric in character, a perturbation technique can be employed to simplify the integrand. Following the introduction of as- sumptions regarding the statistical properties of the local surface deviations, approximate expressions are developed

for the expectation of the subsurface field and the mean

square deviation of the field amplitude. Numerical results

for this latter quantity are obtained for the case of a vertical electric dipole as the radiating source on the inter- face between free space and a moderately rough sea. It is shown that sea surface irregularities can produce a pro- nounced effect upon subsurface fields in some instances;

a tentative physical interpretation of the numerical results

is advanced. 12 p. (Paper 67D5-287, p. 551). VLF superdirective loop arrays, E. W. Seeley

Superdirectivity may be achieved with short VLF loop

arrays because the beamwidth depends only upon the number

of loops and not the length of the array. In addition the usual factors limiting superdirectivity are not so prevalent due to the decoupling between VLF loops. Expressions are derived for the beamwidth, effective height, reception pattern, amplitude and position of the

b?ck lobes and the effects of loop voltage phase and amplitude differences between loops. These equations de- scribe short arrays of any number of loops. The most

serious limitation on the directivity of superdirective loop arrays is the voltage phase and amplitude differences between loops. These differences between adjacent loops add up to obscure the nulls and deteriorate the reception

pattern. 3 p. (Paper 67D5-288, p. 563). Curves of ground proximity loss for dipole antennas (a digest), L. E. Vogler and J. L. Noble A brief description is given of a recently published

atlas of curves showing dipole antenna loss due to the presence of a conducting ground. 2 p. (Paper 67D5-289,

P, 567). Observations and results from the "hiss recorder," an

instrument to continuously observe the VLF emissions,

J. M. Watts, J. A. Koch, and R. M. Gallet An instrument, developed at NBS, has enabled continu- ous observations of VLF emissions. The continuous data has permitted the identification of some new characteristics

of VLF emissions, and new information on the statistics

of the occurrence of VLF emission activity. The continuous recordings are able to document the morphology of VLF emission events and, therefore, accurate correlations with other geophysical phenomena are possible. Correlations of VLF emission activity with abnormal D-region absorption, X-ray events, and magnetic

activity are presented, lip. (Paper 67D5-290, p. 569).

A radiometeorological study, Part I. Existing radiometeorological parameters, J. A. Lane and B. R. Bean A e :vey is made of existing radiometeorological para- meters, including those derived from the vertical profile

of refractive index, n, and others which involve the con- cept of thermal stability. Quantitative comparison of radio and meteorological data confirm the value of Ns (the surface value of [«-l]l06

) and AN (the difference in value

of Ns and N at one kilometer) in a wide variety of conditions. For particular areas, however, it seems desirable

to develop improved prediction techniques using a para- meter which is related to the size, stability, and intensity

of elevated layers in the troposhere. 7 p. (Paper 67D6-

291, p. 589). A radiometeorological study, Part II. An analysis of VHF field strength variations and refractive index

profiles, B. R. Bean, V. R. Frank, and J. A. Lane

This paper discusses the cumulative probability distri- butions of field strength for four 200 km VHF paths in Illinois in terms of a classification of refractive index

profiles. It is shown that extended elevated layers pro- duce signal enhancements of 10 to 25 db above the level observed in unstratified conditions. Assuming the layer characteristics given by radiosonde data, the best agree- ment between calculated and measured values of field 148
strength is obtained using a layer model with a linear nprofile. The possible influence of smaller layers is also dis- cussed in relation to the observed results for conditions judged to be unstratified or well mixed on the basis of sonde data. 8 p. (Paper 67D6-292, p. 597). A radiometeorological study, Part III. A new turbulence

parameter, B. R. Bean, E. J. Dutton, J. A. Lane, and

W. B. Sweezy

The concept of thermal stability is utilized to derive expressions for the radio refractivity of an air parcel undergoing adiabatic compression or expansion. These

expressions are of exponential form with scale heights of 12.5 km for the dry adiabatic process and 7.0 km for the wet adiabatic process. The adiabatic curves for N are determined solely from conditions at the earth's surface. A new turbulence parameter, II, is derived as the differ- ence of the environmental refractive index structure and

the adiabatic curves for an air parcel lifted from the sur- face to 3 km. This parameter yields correlations with

three hourly median field strength data that are not statistically different from those obtained with the much simpler

parameter, A.N. The correlations obtained with the equivalent gradient are not statistically different from zero. 4

p. (Paper 67D6-293, p. 605). Reflection of radio waves from undulating tropospheric

layers, A. T. Waterman, Jr., and J. W. Strohbehn This report examines the nature of coherent reflections

of radio waves, at near-grazing incidence, from a hori- zontal atmospheric layer on which is superimposed a

slight wave motion. The existence of reflections of this type is merely postulated, and the development then pro- ceeds to examine the consequences of such a postulate with reference to measurements obtainable in transhorizon propagation experiments. The properties of angle of ar- rival, signal level, fading rate, and Doppler shift are ex- amined, together with their rates of change with time. 8 p. (Paper 67D6-294, p. 609). Oblique propagation of groundwaves across a coastline —

Part I, J. R. Wait The amplitude and phase of the groundwave are calculated for oblique propagation across a flat lying coastline. The land and sea are assumed to be smooth and homogeneous. Attention is focused on the effects which take place near the coastline. It is shown that the reflected wave depends critically on the angle of incidence, 6^ while the transmitted wave has only a weak dependence

on e o , 8 p. (Paper 67D6-295, p. 617). Oblique propagation of groundwaves across a coastlinePart H, J. R. Wait and C. M. Jackson The amplitude and phase are calculated for oblique propagation across a coastline with a sloping beach. In this case, the land and sea are taken to be plane surfaces and the beach slope is constant. It is shown that the reflected wave may be quite significant and it has a funda- mentally different character from the reflected wave in the case of a flat-lying coastline. 6 p. (Paper 67D6-296,

p. 625).

On the index of refraction of air, the absorption and dis- persion of centimeter waves by gases, G. Boudouris The index of refraction, the absorption and dispersion

are studied for several gases and vapors (pressure from 0

to 1 atm, temperature from 0 to 50° C, frequency from 7,000

to 12,000 Mc/s). The first part is devoted to a description

of the microwave spectrometer used, while the second part

is a survey of the several theories implied in the interpretation of the results.

In the third part, we present first the results concerning

the index of refraction of atmospheric gases, of dry air, and of damp air. Then we study the absorption and dis- persion by several vapors, and of ammonia and chloroform,

principally. Finally, we indicate a new method making

use of gaseous mixtures. Our original results are discussed and presented within

the frame of reference of works of other authors by means

of comparison and intensive bibliographies. 54 p. (Paper

67D6-297, p. 631). A numerical approach to the solution of radio diffraction problems, J. K. Hargreaves and S. Hargreaves

It is proposed that some diffraction problems can be

conveniently solved by a direct numerical integration of the Fresnel-Kirchhoff formula. The required properties of

the diffraction screen are represented by a series of numbers which can be either regular and periodic, or partially random. The necessary limits and integration intervals are considered, and the method is found to be convenient

for Fresnal diffraction and for irregularities not too large compared to the wavelength. Both deep and shallow

modulation can be treated. The accuracy of the computations is verified in a simple case of sinusoidal modulation, and some new results are derived for random phase screens. 14 p. (Paper 67D6-298, p. 685). Inversion of radio wave absorption data to establish ionospheric properties. I. Nondeviative absorption, A. D. Wheelon

Nondeviative absorption of high frequency radio waves

which penetrate the lower ionospheric layers is analyzed

in terms of the usual expression:

In /£* \_A<»)-*=5l/* ^

\P0 / mc J [i/ 2+(co±Wl)

2

] Classical approximate predictions of the absorption function A(w) for several ionospheric electron density N and

collision frequency v models derived from this expression

are first reviewed. It is then shown that by solving the above integral equation, one can establish an explicit relationship between N and v at any height from a measured knowledge of the absorption function A(oj) as a function of carrier frequency <*>. Thus, a knowledge of the electron density profile can be used to reconstruct the

collision frequency profile and conversely. It is shown

that the usual assumption A(^) = A0 ^~2 corresponds to an

impossible ionospheric model. Several examples are given

to illustrate the analytical inversion technique and to in- dicate its sensitivity to low frequency portions of the measured absorption function. 7 p. (Paper 67D6-299,

p. 699). 149
Radiation in a lossless magneto-ionic medium at fre- quencies high relative to the electron gyro-frequency,

T. W. Marini Equations for the radiation field of an arbitrary distri- bution of source currents embedded in a lossless magnetoionic medium and radiating at a frequency that is high

relative to the electron gyrofrequency of the medium are derived using the QL approximation. The field is given

directly in terms of the components of radiation vectors determined by an integration over the source currents. The application of the equations to arrays of similar sources is discussed. 10 p. (Paper 67D6-300, p. 707). Radiation through cylindrical plasma sheaths, J. H. Harris The radiation fields of a magnetic line source axially oriented on a conducting cylinder which is in a plasma

environment have been analytically determined. The

plasma environment is taken to be a series of homogeneous cylindrical layers none of which is contiguous with

the cylinder. It is demonstrated that a quite significant

distortion of the field pattern is effected by the presence

of a lossless plasma sheath. Characteristics of the radi- ation fields are discussed and radiation patterns computed in a plane through the axis of the cylinder and the

line source, are presented. The patterns are found to have large narrow amplitude fluctuations that can be

attributed to leaky waves. 17 p. (Paper 67D6-301 , p. 717). Chart for determining the effects of ionospheric tilts using

an idealized model, T. A. Croft and R. B. Fenwick

In studying the tilted ionosphere, it is often useful to consider the action of an equivalent reflecting mirror as

an approximate substitute for the more complex refracting layer of electrons. Although the analogy is crude, it per- mits relatively easy computation of results which provide

insight into the action of the real ionosphere. Using the mirror analogy, the effect of a tilted iono- sphere on a radio wave has been calculated for a wide

range of tilt angles and directions without approximations. The results are presented on eight charts, each of which

is calculated for two particular values of the parameters which must be fixed prior to calculation (mirror height and the distance from transmitter to the point on the earth beneath the mirror). Examples of chart use and implications for long-range HF transmission are also discussed.

11 p. (Paper 67D6-302, p. 735).

Reflection of VLF radio waves from an inhomogeneous

ionosphere. Part III. Exponential model with hyperbolic transition, J. R. Wait and L. C. Walters This is a continuation of two earlier papers on the subject of reflection of waves from inhomogeneous isotropic media. In this particular paper an exponential conductivity profile is perturbed in such a manner that the conductivity is increased for all heights above a certain

level. A hyperbolic tangent transition is employed in orde o avoid discontinuities in the conductivity versus

height profile. 6 p. (Paper 67D6-303, p, 747).

Families of distributions for hourly median power and

instantaneous powerof received radio signals, M. M.

Siddiqui and G. H. Weiss

In this paper the gamma family of probability distribu- tions is studied in connection with the distribution of hourly median received power or transmission loss. By

taking a mixture of Rayleigh distributions with gamma

distributions as mixing distributions the long-term distributions of instantaneous signal power are theoretically derived. These distributions are evaluated in closed

form under several hypotheses. The question of estimating

the parameters is discussed. Graphs and tables are pre- pared to facilitate the' application of the theory to the data. 10 p. (Paper 67D6-304, p. 753).

Statistical methods in radar astronomy. Determination of surface roughness, H. S. Hayre An experimentally established statistical model of a rough surface is used to show that sufficient information about the roughness of such a surface in the form of its standard deviation, mean horizontal size of lumps, and

average slope can be obtained from experimental data when used in conjunction with a theory based on statisti- cal analysis. 2 p. (Paper 67D6-305, p. 763). Electrical conductivity of the great lakes, L. H. Doherty A critical examination has been made of the electrical conductivity values assigned, for radio propagation pur- poses, to the waters of the Great Lakes. Discrepancies between conductivity values measured in the laboratory and those deduced from field strength measurements are shown to have been the result of both experimental error and the use of faulty standard theoretical field strength curves. The latter source of error is the result of error

in the standard curves themselves and in the use of a

dielectric constant of 15 for over-water propagation. Conductivity values derived from laboratory measurements of water samples are significantly different from those published in conductivity maps. Large seasonal variations

in conductivity, approaching a factor of two in some

cases, are a significant complicating factor. 7 p. (Paper 67D6-306, p. 765). TITLE PAGE AND CONTENTS TO VOL. 67, 6 p. PAPERS FROM THE JOURNAL OF RESEARCH

OF THE NATIONAL BUREAU OF STANDARDS, SEC- TION D. RADIO SCIENCE, VOLUME 68, JANUARY- DECEMBER 1964. Beginning with this issue the name

of the Journal was changed from Radio Propagation.

January 1964 Comparison of observed VLF attenuation rates and excitation factors with theory, A. D. Watt and R. D. Croghan The properties of VLF propagating modes are briefly reviewed and simplified equations are presented which

can be employed in calculating the fields produced. Experimentally determined excitation factors are com15 0
pared with theoretical curves obtained by Wait and found

to agree rather closely. Attenuation rates are shown as

a function of frequency and are found to agree rather closely with calculated values using a proposed simplified perturbation solution for attenuation rates based on

reflection coefficients at the ground and ionosphere. When employing values of ionospheric reflection coeffi- cients recently presented by Wait and Walters, the nonreciprocal effects in attenuation rate are found both

theoretically and experimentally to be much greater in the 10 kc/s region than in the 20 to 30 kc/s region. Finally, experimental field strength versus distance data

are compared with mode calculations and found to compare well all the way from 1 megameter out to and in- cluding fields at the antipode (20 megameters). 9 p. (Paper 68D1-307, p. 1). Field intensity measurements at 10.2 kc/s over recipro- cal paths, J. C. Hanselman, C. J. Casselman, M. L. Tibbals, and J. E. Bickel Experimental data at 10.2 kc/s are presented which

demonstrate nonreciprocity in attenuation rates for propagation in the east-west directions, and that reciprocity exists in the north-south direction along a magnetic

meridian. The experimental evidence, recorded for propagation paths of 3,820, 7,830, and 8,450 kilometers, compares well with theoretical attenuation rates at 10 kc/s given by J. R. Wait and K. Spies. 4 p. (Paper 68D1-308, p. 11). Propagation of VLF waves over distances between 1000

and 3000 km, B. Burgess , 2 p. (Paper 68D1-309, P- 15). Some experimental results concerning nonreciprocal east-west VLF wave propagation. B. Burgess, 2 p. (Paper 68D1-310, p. 17).

An experimental study of the phase stability of VLF

signals, D. E. Hampton, 2 p. (Paper 68D1-311, p. 19)- Some particular observations on diurnal phase variations of VLF transmissions received in Paris, B. Decaux and A. Gabry

Observations made in Paris, France, of the phase of various frequency stabilized VLF transmitters are re- ported. Descriptions are given of the seasonal dependence of the diurnal phase shift on an arctic path, effects following solar flares, effects of two solar eclipses, and observation following the high-altitude nuclear explosion of July 9, 1962. 5 P- (Paper 68D1-312, p. 21). Periodic fading of VLF signals received over long paths

during sunrise and sunset, D. D. Crombie

Data on the periodic changes in amplitude and phase

of VLF signals received over long VLF paths is ex- amined. It is concluded that the variations are due to multimode propagation in the nighttime portion of the

path. 8 p. (Paper 68D1-313, p. 27).

Effects of wall perturbations in multimode waveguides,

S. W. Maley and E. Bahar An experimental investigation has bern made of the effects of wall perturbations in multimode rectangular waveguides, whose dimensions were such that the modes TEno

for ra=l,2 ... 15 were propagating modes and all of the others were cutoff. Measurements were made at X-band frequencies. The investigation has shown that when the lowest ordered mode is incident upon a pertur- bation in the waveguide wall, all of the higher ordered propagating modes will be excited in both directions in the waveguide, but the distribution of energy among the modes is critically dependent upon the shape and size

of the perturbation. Measurements on this waveguide with various wall per- turbations may be used to gain insight into the effects

of ionospheric perturbations on terrestrial VLF propagation. 8 p. (Paper 68D1-314, p. 35). VLF utilization at NASA satellite tracking stations, C. H. Looney, Jr. The time and frequency requirements of the network of NASA satellite tracking stations are described, and it is shown that the VLF transmissions from WWVL satisfy many of these. There ure great potentialities inherent

in the use of these signals, or suitable modification of them, for obtaining extremely accurate standard time synchronizations. NASA tracking stations will greatly extend their usage of VLF reception in the near future, not only to obtain automatic frequency corrections, but

for purposes of research in the area of time and frequency

dissemination. 4 p. (Paper 68D1-3 15 , p. 43). Long waves associated with disturbances produced in plasmas, H. Bremmer The disturbances produced in a homogeneous plasma

by passing charges is analyzed. 12 p. (Paper 68D1-

316, p. 47). Some remarks on the Watson transformation and mode

theory, L. A. Berry The Watson transformation, which is the basis of VLF

mode theory, is reviewed. It is shown that the disap- pearance of the line integral ("continuous spectrum") depends only on the properties of the earth (for a homogeneous ionosphere). Thus, the integral is interpreted

just as in the classical groundwave case, i.e., it repre- sents tlr: waves which have reentered the air after travel- ing through the earth. The limitations of the second-order Debye approximations have been discussed vaguely before. Actual calculation in specific cases shows that the attenuation rate

of the first mode is in error by 60 percent at 16.6 kc/s,

25 percent at 10 kc/s, and 15 percent at 8 kc/s when the Debye approximations are used for all wave functions.

It is not possible to deduce effective parameters for the homogeneous ionosphere from consideration of the attenuation rate alone. It is suggested that simultaneous

consideration of attenuation rate and phase velocity will 151
remove ambiguity and an example calculation is given

for 10.2 kc/s. The resulting model ionosphere is at a height of 65 km with |« r

| ~ 1.2 (10

s ). 8 p. (Paper 68D1-

317, p. 59). Concerning limitations and further corrections to geometric-optical theory for LF, VLF propagation between the ionosphere and the ground, J. R. Johler Considerable use has been made of the geometricoptical propagation theory to describe long wavelength

terrestrial radio waves between the ionosphere and the ground by Bremmer [1949], Wait and Murphy [1957], Wait

[1961], Wait and Conda [1961], and Johler [1961, 1962]. The physical interpretation of pulse signals propagated

around the terrestrial sphere as an application of the theory has been described by Johler [1962, 1963a, 1963b]. Indeed, the use of the Loran-C nidio navigation-timing system to study the propagation of LF ionospheric waves

has given further impetus to such a study. The geometric series from which the geometric-optical

ray limit is derived like the full wave residue series or the series of zonal harmonics [Johler and Berry, 1962] is rigorous. However, the comparatively gross approximations usually employed in the geometric-optical ray limit are worthy of careful scrutiny at this time since the rigorous residue series methods have been worked out in some detail for large scale computers [Johler and Berry, 1962, 1963]- The geometric series from which the geometric-optical

ray limit is derived like the full wave residue series or the series of zonal harmonics [johler and Berry, 1962] is rigorous. However, the comparatively gross approximations usually employed in the geometric-optical ray limit are worthy of careful scrutiny at this time since the rigorous residue series methods have been worked out

in some detail for large scale computers [johler and

Berry, 1962, 1963].

It is apparent from the rigorous theory that the geometric-optical rays do not merely diffract around the curvature of the terrestrial sphere but at considerable

distance beyond the geometric-optical horizon are built up to stronger fields by additional ionospheric reflec- tions of the nature of a detached mode of propagation

not ordinarily taken into account by the saddle point method of the ray limit. 12 p. (Paper 68D1-318, p. 67). Some remarks on mode and ray theories of VLF radio propagation, J. R. Wait Some of the assumptions used in treatment of the mode

theory of VLF radio propagation are discussed briefly. The connections with geometrical-optical theories are also pointed out. 2 p. (Paper 68D1-319, p. 79)- Two-dimensional treatment of mode theory of the propagation of VLF radio waves, J. R. Wait This paper is partly of a tutorial nature. The intended purpose is to exploit the essential two-dimensional

nature of wave propagation in the earth-ionosphere waveguide. It is shown that, without resorting to erudite arguments in the complex plane, the usual working formulas of VLF mode theory may be derived directly from

orthogonality considerations. Furthermore, the physical

insight gained by the present development immediately suggests how the formulas may be generalized to an earth-ionosphere waveguide of nonuniform width. 13 p. (Paper 68D1-320, p. 81). Reflection of electromagnetic waves from a lossy magnetoplasma, J. R. Wait and L. C. Walters A method is outlined for calculating the reflection coefficient from a horizontally stratified ionized medium. The profiles of electron density and the collision fre- quencies are both taken to be exponential functions. The d-c magnetic field is taken to be horizontal and

transverse to the direction of propagation. The specific results described are applicable to the oblique reflection

of VLF radio waves in the D layer of the ionosphere for propagation along the magnetic equator. It is confirmed

that the reflection coefficient is nonreciprocal in both amplitude and phase. For a wide range of the parameters, the magnitude of the reflection coefficient is greater for west-to-eest propagation than for east-to- west propagation. 7 p. (Paper 68D1-321, p. 95). Propagation of ELF waves below an inhomogeneous

anisotropic ionosphere, J. Galejs and R. V. Row, 2 p. (Paper 68D1-322, p. 103). VLF propagation under the ionosphere in the lowest mode of horizontal polarization. H. A. Wheeler

In the lower part of the VLF band, around 4 kc/s, it appears that the lowest rate of attenuation is obtainable

by horizontal polarization in the TE-01 mode. This

offers a substantial advantage relative to vertical polarization in the usual TM-01 mode and the simple TM-00

or TEM mode. Some types of antennas are found to be

suitable for the TE—01 mode, namely, a horizontal wire above ground or a vertical loop, either one located in a plane perpendicular to the direction of transmission. A

theoretical study is summarized, leading to the conclusion that this mode offers some unique features ?:nd is suitable for transmission to distances of the order of 4,000 km. 9 p. (Paper 68D1-323, p. 105). Propagation of VLF waves under disturbed conditions,

B. Burgess, 2 p. (Paper 68D1-324, p. 115). VLF disturbances caused by trapped beta-rays from the decay of neutrons produced in high-altitude nuclear

explosions, A. J. Zmuda, B. W. Shaw, and C. R. Haave

In the fall of 1962 nuclear devices exploded near Johnston Island on October 20 and 26, and November 1 pro- duced phase perturbations of very-low-frequency radio waves monitored at APL/JHU. For the event of October 26, and in regard to the VLF transmission from NBA

in Balboa, Panama, as received at APL, the perturbation has a temporal variation attributable to trapped 0-rays from the radioactive decay of neutrons. The arti- ficial belt of /3-rays forms around the geomagnetic meridian through the burst point. As the stream drifts east- ward in its first global circuit an energy dispersion oc- 152
curs because the more energetic particles also have a

larger azimuthal drift velocity. The attendant pertur- bations along VLF propagation paths remote from the detonation area have a temporal variation in accord with

that of the energy of the trapped /3-ray stream passing

over the VLF path. The work on this event confirms the results of an earlier study which contained an uncertainty due to the presence of a natural disturbance, a disturbance which apparently did not especially affect the region herein treated. The VLF perturbations due

to the bursts of October 20 and November 1 were rela- tively small but the former event did produce a disturb- ance also consistent with the idea that the cause re- sides in trapped /3-rays from the decay of neutrons. 7 p. (Paper 68D1-325, p. 117). VLF anomalies observed at State College, Pa., during

the U.S. 1962 high-altitude nuclear tests, C. F. Sechrist, Jr. During the summer and fall of 1962 the U.S. conducted

five high-altitude nuclear tests near Johnston Island in the Pacific Ocean; these tests ranged in altitude from

tens of kilometers to 400 km, and in yield from low to 1.4 megatons. The relative phases and field intensities

of two U.S. Navy VLF stations (NPG at Jim Creek,

Wash., and NBA at Balboa, Panama Canal Zone) were measured at State College, Pa., during the tests, and

all except the 4 November 1962 test produced positive

results. Because of the geometry of the propagation paths and

the burst point, enhanced D-region ionization was pro- duced by neutron-decay beta particles on the NPG-State

College path, and by geomagnetically-trapped fission- decay and/or neutron-decay beta particles on the NBAState College path. Concerning the NPG signal anomaly, the onset and maximum were practically instantaneous; this is consistent with the neutron-decay model of Crain and Tamarkin. The perturbations of the NBA signal were de- layed by minutes, for the four tests, and by tens of minutes for the 20 October 1962 and 26 October 1962

tests; these delayed effects may be ascribed to enhanced

ionization in the lower ionosphere produced by geomagnetically-trapped beta particles that originated in the radioactive decay of fission fragments and/or the decay

Results of preliminary computations, based on tapered- and step-ionosphere waveguide models and Wait's first- order theory for a variable height earth-ionosphere waveguide, are presented. 9 p. (Paper 68D1-326, p. 125). Establishment of new facilities for WWVL and WWVB,

J. M. Richardson, 1 p. (Paper 68D1, p. 135).

Generation of an electromagnetic pulse by an expanding plasma in a conducting half-space, A. P. Stogryn and

R. N. Ghose

The problem of the generation of an electromagnetic pulse by an expanding, infinitely conducting, spherical plasma under the earth is considered. The solution consists of the derivation of an appropriate tensor Green's

function for the half-space which reduces the problem

of determining the electric field at any point in space due to the current density generated by the interaction

of the plasma with the earth's static magnetic field to evaluating an integral. The vertical component of the

electric field at the earth's surface which is generated

by the mechanism is calculated. 9 p. (Paper 68D2-327,

p. 147). Impedance of a monopole antenna with a radial-wire ground system on an imperfectly conducting half-space, Part II, S. W. Maley and R. J. King The impedance of a vertical monopole located over the surface of an imperfectly conducting earth and having a radial-wire ground system has been studied theoretically by J. R. Wait. An experimental investigation discussed

in part I of this paper gave results in good agreement with Wait's theory. This part of the paper is a presentation of calculations based on Wait's theory showing the behavior

of antenna impedance as a function of antenna height, top-loading and number, size, and length of radial wires.

7 p. (Paper 68D2-328, p. 157). Capacitor type biconical antennas, J. Galejs

In this paper the biconical antenna analysis performed

by C. T. Tai is extended to top-loaded and half-buried antenna structures which may have spherical cores of lossy dielectric. After computing the terminal admit- tance of the antenna, its input admittance is obtained by transmission line considerations. The numerical calculations emphasize antennas of dimensions which are small relative to the wavelength. Wide angle antennas

of solid cones exhibit smaller radiation power factors

(or products of available bandwidth and efficiency) than top-loaded antennas of small angle. The hemispherical

antenna, located above a perfectly conducting ground

plane, exhibits a larger radiation power factor than the corresponding half-buried antenna of the same total volume. 8 p. (Paper 68D2-329, p. 165). Simulated angular response patterns for transhorizon propagation, J. W. Strohbehn and A. T. Waterman, Jr. To aid in the interpretation of rapid beam-swinging measurements as applied to tropospheric transhorizon propagation, models of the arriving wave complex have

been specified, and the response of a scanning antenna

array to this wave complex has been computed. Two

types of models are used. One simulates a mechanism

for troposcatter consisting of coherent partial reflec- tions from layers of refractive-index discontinuity. The

other simulates a mechanism of turbulent scattering. For each, the complex field at the antenna aperture

is determined, for a number of specific instances, and

the response of the antenna to this field is computed, in each instance, as the antenna goes through its scanning

process. The results are compared with selected ex- amples taken from transhorizon beam swinging measurements. Pertinent characteristics of each type are clearly delineated. 6 p. (Paper 68D2-330, p. 173). 153
Radio-star scintillations from ionospheric waves, J. W. Warwick A swept-frequency interferometer operating in the fre- quency range from 7.6 to 41 megacycles per second re- cords positions and durations of Cassiopeia A scintilla- tions. Besides demonstrating the broad bandwidth

characteristic of scintillations in this frequency range,

the interferometer often reveals systematic trends in the duration and the position of the radio star as functions

of frequency. On several occasions, the effects can be

interpreted simply and directly in terms of wavelike ir- regularity structure at about 200 kilometers elevation.

In one instance studied in detail, the wavelength was 17 kilometers from crest to crest and the phase velocity of the order of 60 meters per second. From a statistical argument the conclusion is drawn that most of the ir- regularities producing scintillations recorded by us are

in motion towards the south. The absence of duration and angle-of-arrival effects from many other broadband

scintillations implies the existence of a finer structure, superposed on the basic long-wavelength pattern. 10 p. (Paper 68D2-331, p. 179). Ionosonde studies of some chemical release ionosphere, J. W. Wright A,1 des ^o^iptiCw —

obtained during the release of chemicals and hi0

__ plosive detonations in the E and F regions of the iono- sphere during Project Firefly 1962. The experiments

included several designed to reduce locally the ambient

electron density. The effects are discussed

son with the calcuh

3 pres. ted of .

the

tions

16 p. (Paper 68D2-332, p. 189).

l distributio

Diurnal changes of transmission time in the Arctic propagation of VLF waves, W. T. Blackband The diurnal variation of the transmission time for the signal from a distant VLF transmitter results from the solar illumination of the lower ionosphere. For a path crossing the Arccic regions there will be no diurnal change for that part of the path which is illuminated by

the midnight sun. It is shown that for a path crossing

the Arctic Circle the diurnal change curve is of the normal trapesium shape at the equinoxes but that it takes on different forms at midsummer and midwinter. An

analysis of experimental curves shows that they are of the form predicted. A simple rule for computing the change over on Arctic path is shown to agree well with

th<- experimental data available. 10 p. (Paper 68D2- 33.3,

p. 205). Geometrical optics convergence coefficient for the Whistler case, J. H. Crary

In a previous report [Crary, 1962] the field strength, direction of arrival, and apparent polarization of whistler signals was calculated by the use of ray theory (or geometrical optics). The convergence coefficient is a factor

in the ray theory equations which expresses the net con- vergence or divergence of the rays caused by reflection from the curved earth and ionosphere.

Intuitive reasoning led to the assumption of unity for this coefficient in the whistler case, where there are an equal number of reflections from the concave ionosphere

and convex earth. This is contrasted with the conver- gence coefficient for the case of ground-to-ground trans- mission; this coefficient contains singularities at criti- cal distances. The derivation and evaluation of the expression for the whistler case confirms the accuracy of the assumption

of unity; this greatly simplifies whistler calculations.

5 p. (Paper 68D2-334, p. 211). Comments on a paper "Collisional Detachment and the Formation of an Ionospheric" by E. T. Pierce, H. R. Arnold, 3 p. (Paper 68D2-335, p. 215). The quasi-longitudinal approximation in the generalized

theory of radio wave absorption, R. F. Benson

Sample calculations for the case of nondeviative ab- sorption indicate that the generalized magneto-ionic ex- pression for the absorption coefficient for longitudinal

radio wave propagation can be used with great accuracy even when the direction of propagation deviates greatly from longitudinal if the gyrofrequency s in the equation

is replaced by co L

= \s cos 0| , where 0 is the angle be- tween the propagation vector and the earth's lines of magnetic force. Curves indicating the percent error introduced by using the modified longitudinal equation

(i.e., using co L

), in place of using the more involved expression for arbitrary

<f>, are presented for the ordi- nary and extraordinary components for values of 0 and / between 10 to 50° and 1 to 50 Mc/s, respectively. In the case of the extraordinary component, for frequencies in the 1 to 4 Mc/s range, greater accuracy is obtained by using the unmodified longitudinal equation even when 0/0 rather than introducing u> L

. For both components

the percent error introduced by using the simplified

longitudinal expression, modified by using cd L

in place

of s, is less than 1 percent for all values of <fi up to 50° when the frequency is 15 Mc/s or higher. 5 p. (Paper 68D2-336, p. 219). Diurnal phase variation of VLF waves at medium dis- tances, H. Volland Methods of phase measurements at VLF are briefly described. Some results of diurnal phase measurements,

sunrise effects, and solar flare effects at medium dis- tances and northern geographical latitudes are summarized. Two inhomogeneous and anisotropic models

are used for the interpretation of the measurements: the

first corresponding to the daytime ionosphere and the second corresponding to the nighttime ionosphere. The

models are related to homogeneous models with sharp boundaries and effective parameters of conductivity,

dielectric constant, and equivalent height. The diurnal phase lag, depending on distance, and the sunrise ef- fects at 1000 km and 2000 km are interpreted by these models. Two critical distances exist where the night- time phase gains a phase advantage of 360 degrees relative to the daytime phase. An electron profile of the daytime lower ionosphere is deduced from measured day- 154
time variations of equivalent height. The strength of ionizing solar radiation during a solar flare and the ef- fective attachment coefficient of the lower ionosphere

are derived from measured variations of the equivalent

height during a solar flare. 14 p. (Paper 68D2-337

P- 225).

Application of diffractions by convex surfaces to irreg- ular terrain situations, H. T. Dougherty and L. J. Maloney

Previous solutions by Rice and by Wait and Conda

are combined and extended to provide more readily eval- uated formulas for the diffraction of radio waves by the "rounded obstacles" encountered in irregular terrain situations. A comparison with experimental data is also provided. 12 p. (Paper 68D2-338, p. 239). Effect of lossy earth on antenna gain, R. J. Coe and W.

L. Curtis The effect of lossy earth ort the far field gain of antennas with finite size metal ground planes has been

investigated experimentally. Gain measurements were made of several antennas and their associated ground

planes mounted both flush with the surface of the earth and far removed from the earth. It was found that for the ground plane sizes used in this study the gains for the two situations differed only at low elevation angles. The results suggest that one may estimate the behavior

of an antenna over conducting earth by measuring the

free space gain utilizing simple modeling techniques on

a conventional antenna pattern range. 5 p. (Paper 68D2-

339, p. 251). Propagation of radio waves with frequency 99.9 Mhz as

a function of the vertical structure of the atmosphere

derived from daily radiosonde observations, G. P. A. Braam A special parameter was derived from radiosonde

observations to indicate the atmospheric structure. The

relation between this parameter and the propagation of UHF radio waves beyond the horizon was investigated

statistically. It was found that this relation was strong

at midnight, but much weaker, though not absent, at noon. As an analogous difference exists between summer and

winter data, it is suggested that for abnormal propagation

apart from special layers with a large gradient of the refractive index, also, a stable atmosphere in the lower

levels is required. 4 p. (Paper 68D2-340, p. 257).

March 1964 An interpretation of rapid changes in the phase of hori- zontally polarized VLF waves recorded at night over a

short path in the southwestern United States, E. E. Gossard and M. R. Paulson

Data are presented from a near vertical incidence cw VLF sounding system whose transmitter is located at Sentinel, Arizona. The configuration of the transmitting antenna is such that the vertically polarized groundwave

pattern has deep nulls in which receivers may be located. The small groundwave allows the polarization components

of the downcoming skywave to be measured with considerable accuracy. The sounding system was operated

at four frequencies in the VLF range. The observations show certain striking features. The

records of receivers placed to the east of the transmitter

are different in character from records of receivers placed

in a corresponding position to the west of the transmitter. Characteristic records of components polarized in the plane of incidence are often very different from those of components polarized normal to the plane of incidence. Rapidly moving features often pass over the triangle

of receiving stations causing 180° to 360° phase changes. A model is proposed which can explain the observational features of the data. 10 p. (Paper 68D3-341,

p. 265). Precise phase and amplitude measurements on VLF

signals propagated through the Arctic zone, F. H. Reder, C. H. Abom, and G. M. R. Winkler The scope and purpose of an Arctic VLF propagation study are outlined, and results are presented for the period from February to June 1963. Typical diurnal phase

and amplitude patterns of NPM and NPG transmissions

received at Stockholm are given for each month. The

diurnal NPG amplitude change at Stockholm reached a maximum of 38 db during March. Monthly averages of NPM-Stockholm and NPG-Stockholm diurnal phase changes

are compared with those for other transmission paths. Twenty-four hour averages of frequency differences of VLF transmissions were measured at various reception

sites and intercompared. Residual errors ranged from

10

11 to 3 y 10~12

, with standard deviations between 8.5 and 3.3 x 10 ". Arctic paths were found to be worse by

only a factor of about 2. Preliminary analysis of geo- magnetic disturbance data and observed VLF phase

anomalies indicates reasonable correlation for the NPGStockholm path. Finally, phase measurements on NBA

taken simultaneously at Kiruna and Stockholm are compared. An SCNA event recorded by a Kiruna riometer

clearly coincided with an NBA phase anomaly observed

at Kiruna while the Stockholm NBA phase record showed

no anomaly. 8 p. (Paper 68D3-342, p. 275). On the long term phase stability of the 19.8 kc/s signal transmitted from Hawaii, and received at Boulder, Colorado, A. H. Brady The use of VLF signals for intercontinental frequency comparison has become very popular in recent years, and

it has been shown by other workers that a precision of about 2 parts in 10 n can be achieved with measurements

over a 24-hr period. Phase records made at Boulder,

Colo., of the NPM, Hawaii, 18.6 kc/s transmission have

been studied for several periods of nearly two weeks

duration in 1962. Deviations from an assumed linear frequency difference between the transmitter and receiver

oscillators show an attainable precision of 2.5 parts in 10 11 in a 24-hr observation, extending to 3.1 parts in 10 12 in a 192-hr observation. Without further data on the re- maining differences between the oscillators, there is no 155
evidence that the propagation conditions over the path

are limiting this precision. It is pointed out that the 50° (peak to peak) semiannual variation in the day to night change in phase, if attributed entirely to one level

of reflection, would have an effect on precision of fre- quency comparison of about 1 part in 10

12

. 8 p. (Paper 68D3-343, p. 283). indwaves acros:

Variational solution for the admittance of i drical antenna, R. A. Hurd

cylin1 expression for the admittance of a hollow

cylindrical antenna fed at the center has been obtained. Contrary to normal practice, the integral equation and

the resulting variational expression have as the unknown

function, the tangential electric field in the tubular region extending from the antenna ends to +<*>. A plausible

trial field is chosen and the relevant integrals are eval- uated asymptotically for long, thin antennas. Some

Oblique propagation of i part III, J. R. Wait This paper, which is a continuation of two earlier papers of the same title, contains numerical results for the field anomaly near a coastline when the surface impedance changes in a linear manner between land and

sea. The earlier results for an abrupt boundary are re- covered as the width of the transition region is reduced

to zero. In general, it is found that the characteristics

of the transition region will not produce significant modifications of the transmitted field. However, the magnitude of the reflected field is greatly reduced as the width of the transition zone is increased beyond about

one-quarter wavelength. 7 p. (Paper 68D3-344, p. 261). Impedance of a monopole antenna with a radial-wire ground system on an imperfectly conducting half space

-part III, S. W. Maley and R. J. King The impedance of a vertical monopole placed over the surface of an imperfectly conducting earth and having a

a radial-wire ground system has been studied theoretically by J. R. Wait. An experimental investigation discussed

in part I of this paper gave results in good agreement

with Wait's theory. Part II presented calculations based

on Wait's theory showing the behavior of antenna im- pedance as a function of antenna height, top loading, and number, size and length of radial wires. Part III concludes this study with a presentation of calculations showing the effect of the earth conductivity and permittivity on the antenna impedance. 5 p. (Paper 68D3-345,

p. 297). A simplified theory of diffraction at an interface separating two dielectrics, J. Kane and S. N. Karp Many electromagnetic problems involving more than one dielectric medium are not susceptible of an exact

solution, when the appropriate boundary conditions are considered. The purpose of the present paper is to for- mulate a new boundary condition, which is capable of leading to mathematically tractable problems, with limited sacrifices in accuracy. 8 p. (Paper 68D3-346, p. 303).

numerical results are given which show reasonable agreement with the experimental values of Iizuka et al. [1963], and also with the theoretical results of Wu [1961]. 6 p. (Paper 68D3-347, p. 311). Admittance of annular slot antennas radiating into a plasma layer, J. Galejs The slot admittance is calculated for a slot radiating

into a waveguide of radius 5 to 10A. The radius of the wide waveguide is selected so that the slot admittance

is equal to the admittance for a semi-infinite half space

in absence of plasma. This slot admittance is an ap- proximation to the admittance of an inhomogeneous half space in presence of a plasma layer. The calculated

slot susceptance is shown to be nearly constant for various thicknesses of the plasma layer, while the slot conductance and radiation conductances are decreased

by increasing plasma thickness. This approximate cal- culation appears to be particularly good for thin layers

of electrically contrasting plasma (e /e 4 1 and/or tan 8 »1). The calculations indicate an admittance similar

to that of earlier calculations for a rectangular slot radiating into a wide rectangular waveguide. 8 p. (Paper

68D3-348, p. 317). Propagation of plasma wav

netic field, R. L. Liboff "spoke-wheel" A study of the cold plasma cylindrical waves that may

propagate in a specific type of two-dimensional magnetic

field is initiated in this paper. The plasma is assumed

to be of uniform density and collisionless, and a "spoke- wheel" magnetic field is considered which is both ani- sotropic and inhomogeneous (varying as the inverse

radius), as defined in the text. Perturbation series solutions are obtained for the first Fourier component of the electric field for the four extreme cases: large and

small magnetic field; large and small plasma densities.

7 p. (Paper 68D3-349, p. 325).

J. B. Webster

: signal strength i tipode, R. M. Pip

the

Observations were made of signal strength as a function of distance from the antipode of an HF transmitter. A 15.9 Mc/s, 5 kw beacon transmitter was located at Perth, Western Australia, whose antipode is within 90 km

of St. George, Bermuda. In December of 1961, an air- borne receiving system was used to record signal strength

to a range of 1600 km in each of the four cardinal compass directions from Bermuda. The airborne measurements

were normalized with similar measurements recorded at a fixed receiving site at Bermuda. An empirical fifth degree equation is derived which

fits the data in a least square sense. Although considerable variation exists in the results obtained on the

four flights, the area of antipodal reception was found to be approximately 500 km in radius with a minimum of signal strength at a radius of 1050 km. Some evidence was obtained which indicates that these results vary as

a function of local time. The measured size of the anti- podal area agrees with that deduced by previous investi- gations. 5 p. (Paper 68D3-350, p. 333).
Relationship between simultaneous geomagnetic and

ionspheric oscillations, H. Rishbeth and O. K. Garriott On rare occasions, mostly during severe geomagnetic

disturbance, variations of phase of high-frequency radio waves reflected from the ionospheric F region are closely

correlated with geomagnetic variations with periods in the range V2 to 30 minutes. Whatever the prime cause of the disturbances, the existance of the correlation poses

an interesting problem in ionospheric dynamics. In this note, it is discussed in terms of the ionosphere "dynamomotor" theory and in terms of hydromagnetic waves. Because only crude theoretical calculations are made,

and because the HF phase and geomagnetic data refer to locations some thousand kilometers apart, only an order- of-magnitude agreement between the two types of observation can be expected, or is indeed found. Further observations with vertical incidence phase sounders and

suitable magnetometers, and improved theoretical work,

are required before the phenomenon can be satisfactorily understood. 5 p. (Paper 68D3-351, p. 339).

April 1964 Some basic microwave phase shift equations, R. W. Beatty The phase differences between terminal variables

(voltage, current, or traveling wave types) at the output with respect to similar ones at the input of a 2-port are expressed in terms of the scattering coefficients of the

2-port and of the reflection coefficients of the system

into which it is inserted. A variety of phase shifts may be defined for a given

2-port, depending upon which of the terminal variables

are considered, whether or not generator and load re- flection coefficients are assumed to vanish, and in which

direction the 2-port has been inserted into the system.

It is shown that a reasonable choice for one of the two

"characteristic" phase shifts of a 2-port is i/r 21 , the argument of 521 , is one of the scattering coefficients. It follows that the other "characteristic" phase shift is ip l2 . The corresponding change in characteristic phase shift

for variable phase shifters is the change in either i/r 21 or

if/ 12 (whichever is appropriate) from the initial to the

final setting. Ideal phase shifters are discussed, and expressions

for the change in output level of variable phase shifters are given. f The importance of using a nonreflecting system in phase shift measurements is emphasized. 5 p. (Paper 68D4-352, p. 349). A light-modulated scattering technique for diffraction 1 field measurements, A. M. Vural and D. K. Cheng

i This paper describes a scattering method for measuring microwave diffraction fields using light modulation. ] A small photoelectric cell is suspended in the field as a 1 scatterer, upon which light pulses shine at an audio rate. ' Only the signal scattered back by the scatterer is modulated. A coherent detector is used which has an output voltage proportional to the square of the tangential component of the field under measurement. Since this method dispenses with all electrical connections to the

scatterer, circuit complications and sources of error due

15 7

to connection disturbance and scatterer movement are eliminated. Hitherto unavailable extensive data for the near-zone diffraction fields of finite cones are presented.

8 p. (Paper 68D4-353, p. 355). Radiation from an aperture in a coated plane, C. M. Knop and G. I. Cohn

In this paper the method developed by J. R. Wait to determine the fields produced by an aperture in an infinite coated-metal cylinder is extended to obtain the solution

for the fields produced by an aperture in an infinite coated-metal plane. Although the fields at any point can be found by this method, this paper treats only the radiation fields (a future paper is planned which will treat the near fields and input admittance of the aperture).

It is shown that the radiation fields produced by a given

aperture for the coated case are related to those of the uncoated case, for the same aperture excitation, by simple multiplicative functions which depend only on

the parameters of the coating and the off-axis angle. These findings, combined with experimental results for finite size uncoated and coated plates in conjunction

with semi-empirical and empirical theories, respectively,

are then generalized to obtain the radiation fields pro- duced by a slot in a coated finite metal plate. The

sharpening and broadening effects on the radiation patterns due to a lossless plasma coating are also obtained

from the general solution. 16 p. (Paper 68D4-354, p. 363). Impedance of a cylindrical dipole having a sinusoidal

current distribution in a homogeneous anisotropic ionosphere, W. S. Ament, J. C. Katzin, M. Katzin, and

B. Y.-C. Koo

The input impedance of a cylindrical dipole in a homogeneous anisotropic ionosphere is determined for arbitrary values of the medium parameters and arbitrary orientation of the dipole with respect to the earth's magnetic field. A sinusoidal current distribution is assumed, as well as a low value of dipole excitation, so that the field equations may be assumed to be linear. The Green's function is expressed as a Fourier integral

in spherical propagation-constant coordinates. In per- forming a residues evaluation of the radial integral in this coordinate system, it is found necessary to deform

the contour differently in different angular regions. By

an appropriate rotation of the coordinates, the boundaries

of these angular regions are made to depend on a single angular variable. An expansion of the result in power

series in the small parameter <r = (dipole radius/dipole

half-length), in which only terms in log (l/<r) and e° ane

retained, leads to considerable simplification. It is found that the two dominant terms can be expressed as

sine £.nd cosine integrals, as in the free-space case,

plus two finite single integrals which need numerical

evaluation. The integrands of these latter integrals are expressed in terms of recursive routines. The numerical integrations are in terms of the polar angle of the wave propagation vector with respect to the earth's magnetic field. Singularities of the integrand are encountered in the collisionless case when the applied frequency is below the plasma or gyro-frequencies. It is then necessary to carry out the numerical integration in
the complex plane. Consequently the present numerical

integration procedure is restricted to cases where this situation does not occur. Extensions of the treatment which remove these restrictions and methods of obtaining

a more accurate current distribution are discussed briefly, the details being reserved for a later paper. Numerical calculations of impedance for selected values of the parameters are exhibited in a set of curves. 27 p. (Paper 68D4-355, p. 379). Propagation of electromagnetic waves through a continuously varying stratified anisotropic medium, G. H.

Price Expressions are developed for the transmission and

reflection coefficients for propagation of a plane wave

through a layered medium, taking account of the effects

of the static magnetic field. A matrix formulation is used which allows proceeding to the limit of a continuously varying medium, and series expansions of the

fields for this case are developed. The results are expected to have application to interpretation of VLF

data obtained within and above the lower ionosphere.

12 p. (Paper 68D4-356, p. 407). Lunar semi-diurnal tides in b< F and their influence on

trans equatorial radio propagation, J. A. Thomas

The apparent partial dependence of anomalous trans- equatorial propagation on the phase of the moon has led

to detailed investigation of the luni-solar tides in h'F for 19 stations having magnetic dip values between + 50° and

-57°. An attempt has been made to determine whether the computed tides were significant by means of power

spectrum analysis. Significant large amplitude semidirunal tides were found only for regions near the magequator at local solar times between 1900 and 2300

hours. A propagation analysis has further shown that appreciable mode pattern changes with the changing phase of the moon are not to be expected for 16 Mc/s trans- equatorial propagation from Brisbane. 9 p. (Paper

68D4-357, p. 419). Some statistical parameters related to the Nakagami-Rice

probability distribution, W. R. Burns Formulas and tables are given for the mean and standard deviation of R = 20 log10 r where the random variable

r has the Nakagami-Rice distribution. This distribution

is of interest in connection with the short-term fading

characteristics of some received radio fields. A particularly simple formula for the mean of R is obtained in terms of the weil-known exponential integral function — Ei(—x). Additional information concerning the median

and interdecile range of R is also given. 6 p. (Paper

68D4-358, p. 429) . The U.S. National Commission Report for Commission 6 of URSI. Subcommission 6.3. Electromagnetics, 83 p. (Paper 68D4-359, p. 435). Electromagnetics introduction, K. M. Siegel, p. 436.

Part 1. Progress in antennas 1960-1962 Frequency independent antennas, V. H. Rumsey,

p. 438. Arrays and electronic scanning, R. C. Hansen,

p. 441. Data processing and synthetic aperture antennas,

A. Ksienski, p. 446. Part 2. Statistical problems in electromagnetics Rough surface, W. S. Ament, p. 451. Electromagnetic wave propagation in a random

medium, W. C. Hoffman, p. 455. Partially coherent electromagnetic fields, F.

J. Zucker, p. 460. Part 3. Radiation Electromagnetic fields in lossy media, J. R.

Wait, p. 463. Antennas in lossy media, C. T. Tai, p. 466. Inhomogeneous media and guided waves, R. E. Collins and A. A. Oliner, p. 479. Radiation from plasmas, L. B. Felsen, p. 480. Electromagnetic wave propagation in inhomo- geneous plasmas and/or magnetoplasmas, W.

C. Hoffman, p. 486. Part 4. Classical diffraction and scattering

Diffraction and scattering, L. B. Felsen and

V. H. Weston, p. 490. On scattering of waves by many bodies, J. E. Burke and V. Twersky, p. 500. Passive communications satellites, Review—

1960-1962, J. R. Burke, p. 511. Passive and active reflectors, J. Kaiser and I. Kay, p. 515. May 1964 URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 1. Radio measurement methods and standards, 24 p. (Paper 68D5-

360). Atomic frequency and Time interval standards, R. C. Mockler, p. 523. RF and microwave power measurements, G. F. Engen and

N. T. Larsen, p. 527. Standards and measurements of attenuation, impedance, and phase shift; period covered: September I960— December 1962, R. W. Beatty, p. 529. Pulsed and CW sinusoidal voltage and current measurements, M. C. Selby, p. 533. Radio noise measurement methods and standards, W. W. Mumford, p. 536. Measurements at millimeter and submillimeter wavelengths, R. G. Fellers The development of measurement techniques in the millimeter and submillimeter range has been accelerated 158
by improvements in sources and the development of transmission systems including conventional dominant mode waveguide, TE ol mode circular waveguide, over- sized rectangular waveguide, and free-space transmission systems with and without beam-guiding techniques,

p. 538. Precise measurements of distance and of the velocity of

light using lasers, P. L. Bender, p. 540 Appendix: Measurements standards and calibration laboratories in the United States, C. E. White, p. 542. URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 2. Tropospheric

radio propagation, 21 p. (Paper 68D5-361).

Ionizing radiation and constitution of the atmosphere,

T. E. Van Zandt, p. 569- Radio climatology, B. R. Bean, p. 553. Radar meteorology and cloud physics, S. G. Bigler,

p. 555. Tropospheric propagation affecting space communications, D. C. Hogg, p. 558. Influence of irregularities of terrain and of vegetation on radio wave propagation, A. W. Straiton, p. 560. Guided waves in the troposphere, J. B. Smyth, p. 563- Radar studies of the Sun, Moon, and planets, J. H. Chisholm and G. H. Pettengill, p. 565- URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 3- Ionospheric

radio, 28 p. (Paper 68D5-362, p. 569). Models of the troposphere, R. Bologiano, Jr., p. 547. Geomagnetism and the ionosphere, S. A. Bowhill, p. 572. Ionospheric storms, S. Matsushita, p. 574. Radio, the ionosphere, and IQSY, R. W. Knecht, p. 578. The guided propagation of ELF and VLF radio waves

between the earth and the ionosphere, D. D. Crombie

and A. G. Jean, p. 584. Electron distribution in the ionosphere, J. W. Wright,

p. 589- URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 4. Magnetospheric radio, p. 23- (Paper 68D5-363).

Constitution of the atmosphere at magnetospheric levels,

S. J. Bauer, p. 597. Theory of magnetospheric radio scattering, H. G. Booker,

p. 600.

Terrestrial radio noise, W. Q. Crichlow and R. T. Disney, p. 600. Geomagnetism and the magnetosphere, A. J. Dessler,

p. 603- Theory of radio and hydromagnetic wave propagation in the magnetosphere, H. G. Booker, p. 607.

Whistlers, D. L. Carpenter, p. 609- Summary of research on VLF and ELF emissions, Roger

M. Gallet, p. 615- Energetic particles in the magnetosphere, J. R. Winckler and R. L. Arnoldy, p. 619- URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 5. Radio and

radar astronomy, 23 p. (Paper 68D5-364).

University of Alabama, University, Ala., p. 631. Cornell University, Ithaca, N.Y., p. 361. Air Force Cambridge Research Laboratories Sagamore

Hill Radio Observatory, Bedford, Mass., p. 362. Collins Radio Company, Cedar Rapids, Iowa, p. 634. Carnegie Institution of Washington, Department of Terrestial Magnetism, Washington, D.C., p. 635. University of Florida, Gainesville, Fla., p. 635. Harvard College Observatory, Harvard Radio Astronomy

Station, Fort Davis, Tex., p. 636. Harvard College Observatory, Radio Astronomy Group

and Space Radio Project, Cambridge, Mass., p. 637. Harvard College Observatory, Radio Meteor Project, Cambridge, Mass., p. 638. University of Illinois, Urbana, 111., p. 639-

Jet Propulsion Laboratory, Pasadena, Calif., p. 640. Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Mass., p. 640. University of Michigan, Ann Arbor, Mich., p. 640.

National Aeronautics and Space Agency, Goddard Space

Flight Center, Greenbelt, Md., p. 644. National Bureau of Standards, Boulder, Colo., p. 645. National Center for Atmospheric Research, High Alti- tude Observatory, Boulder, Colo., p. 645. National Radio Astronomy Observatory, Greenbank,

W. Va., p. 646.
Ohio State University Radio Observatory, Columbus,

Ohio, p. 647. Stanford Radio Astronomy Institute, Stanford, Calif.,

p. 648. University of Texas, Austin, Tex., p. 649.

U.S. Naval Research Laboratory, Washington, D.C., p. 649. Yale University, New Haven, Conn., p. 653- URSI National Committee Report, XIV General Assembly,

Tokyo, September 1963: Commission 7. Radio Electronics, 24 p. (Paper 68D5-365). Progress in microwave power tubes, J. Feinstein, p. 655. 1960-1963 Advances in the state-of-the-art of low-noise beam-type microwave tubes, R. W. Peter, p. 657. Developments in semiconductor devices in the United

States for the period 1960-1963, A. van der Ziel,

p. 660. Parametric devices, R. Rafuse, p. 661. Millimeter-wave techniques, A. Karp and J. Allison,

p. 663- Status of gas lasers, W. R. Bennett, Jr., p. 667. Noise in Masers, H. A. Haus, p. 669. Nonlinear optical properties of solids, P. S. Pershan,

p. 671. Highlights of progress on satellite devices, C. C. Cutler and J. R. Pierce, p. 673- Waves in plasmas, A. Bers and P. Chorney, p. 674.

June 1964 Electrical properties of sea ice at 0.1 to 30 Mc/s, F. L. Wentworth and M. Cohn

This paper sets forth the details of an experimental program in which the resistivity and dielectric constant

of Arctic sea ice were measured. Fourteen ice samples

ranging in salinity from 0.067°/^ (parts per thousand)

to 23°/

00 by weight were studied. The values of di- electric constant and the computed values of loss tangent

are given as a function of frequency (0.1 to 30 Mc/s) for temperatures from —5°C to —40°C. The relationship of

dielectric constant and conductivity at 3 Mc/s is also given as a function of salinity for temperatures of — 10°C, -20°C, and -30°C. 11 p. (Paper 68D6-366, p. 681). ELF and VLF waves below an inhomogeneous anisotropic ionosphere, J. Galejs The differential equations developed by Galejs and Row in the analysis of ELF wave propagation for frequencies between 60 to 3000 c/s are modified to permit computations below the frequency of ion gyro frequency. Near 8 c/s west-east propagation exhibits a minimum

attenuation of 0.022 db/1000 km, while the east-west

direction has a local maximum of 0.165 db/1000 km. The

calculations in the frequency range between 20 and 3000 c/s are made with neglected ion effects, and the propagation is characterized by a monotonic decrease of phase velocity down to the lowest frequency. The method used for calculating the surface impedance

with an arbitrary profile of the ionospheric tensor conductivity and for strictly east-west, west-east, or southnorth directions of propagation applies also to the VLF

range. The VLF propagation characteristics are deter- mined using the modal equation for a spherical earth-to- ionosphere geometry. Computations based on a simple

exponential approximation to the ionospheric conductivity

profile differ only slightly from computations made using more exact ionosphere parameters. 15 p. (Paper 68D6-

367, p. 693).

The effects of a small local change in phase velocity on the propagation of a VLF radio signal, D. D. Crombie Changes in the propagation of a VLF signal due to the changes in phase velocity caused by a small localized depression in the height of the ionosphere along or near

the line joining the transmitter and receiver are investi- gated using elementary diffraction theory. It is shown

that both the phase and amplitude of the received signal may be changed if the horizontal extent of the depression

is great enough and if it is sufficiently close to the path. If the depression is at greater distances from the path, the amplitude and phase of the received signal merely oscillates about the undisturbed values. An ac- count is given of the use of Cornu's spiral in estimating

the effects of a particular disturbance. 7 p. (Paper 68D6-368, p. 709). Auroral-zone absorption effects on an HF arctic propagation path, R. D. Hunsucker

Simultaneous measurements of cosmic noise absorption and signal strength on the 18 Mc/s Thule, GreenlandCollege, Alaska propagation path were made during

aurorally disturbed periods. An intense and an average

strength auroral-zone absorption (AZA) event were studied

in detail and compared with signal attenuation and absorption for a quiet day. This analysis revealed that there is no significant peak-to-peak correlation between

signal attenuation and cosmic-noise absorption for the typical AZA event. A statistical analysis gave the fol- lowing correlations: Auroral-zone absorption versus 18 Mc/s signal at- tenuation, R= 0.21. Quiet-day absorption versus 18 Mc/s signal attenuation, R=0.11.

Observations from a vertical ionosonde located near the midpoint of the Thule-College path (Resolute Bay, Canada) indicated that insufficient ionization exists to 160
allow a great-circle propagated mode on a typical quiet

day. 5 p. (Paper 68D6-369, p. 717). Amplitude-probability distribution of atmospheric radio noise, P. Beckmann

Atmospherics are assumed to be spike shaped with exponential upsurge and decay; their occurrence in time

is Poisson-distributed. The distribution of the peak

value is shown to be lognormal. Under these conditions

the amplitude distribution of atmospheric noise is derived; it may be well approximated by the distribution of the sum of a Rayleigh vector and a vector with log- normally distributed amplitude. The resulting distribution is uniquely determined by three physically meaningful

parameters and is in very good agreement with measured

distributions. 8 p. (Paper 68D6-370, p. 723). An approximate method for computing diffraction patterns caused by ionospheric irregularities, R. Gagnon A method, suitable for investigation of ionospheric phenomena, is derived for computing the amplitude and phase characteristics of an electromagnetic wave after

it has been perturbed by a phase-distorting screen. Kirchhoff's integral for diffraction is used to evaluate

the Fresnel zone fields in terms of a field distribution which is assumed to exist over a plane surface just in- side the screen. The perturbing screen is assumed to distort the front of constant phase in one dimension

only. By approximating the actual curved wave front with plane wave segments, and with the use of the ap- proximations normally used in diffraction pattern analysis, the fields are evaluated in terms of a sum involving

the Fresnel sine and cosine integrals. Several examples

are given. 6 p. (Paper 68D6-371, p. 737). Wave propagation in stratified random media, Y. M. Chen

The problem of wave propagation in stratified media

is reexamined from the stochastic point of view by intro- ducing the concept of random media. For a small inhomogeneity, this problem is investigated by utilizing the

effective refractive coefficient of Chen [1964]. For a

large inhomogeneity, this problem is treated by subdividing the medium into many parallel homogeneous

layers of random media and utilizing the derived reflection and transmission coefficients of Chen [1964]. In each case, it is found that the small randomness has no

drastic and unexpected effects on the behavior of the wave motion in the media considered. Hence, our reli- ance on the results obtained by a nonrandom approach is increased. 6 p. (Paper 68D6-372, p. 743). Radar scattering from coated perfect conductors: Application to the semi-infinite cone and use of exact

eikonal, H. Uberall An approximation method for calculating the diffraction of electromagnetic waves from perfect conductors

coated with weakly scattering material is developed, which consists essentially of a combination of the physical optics approximation (for the perfect conductors)

with the eikonal method of Saxon and Schiff (for the coating). A Born-type expression for the scattering amplitude may be obtained as a simplified version of the more

general results, but is shown to be of qualitative value

only. Numerical results are presented for the case of nose-on backscattering from a dielectrically coated semiinfinite perfectly conducting cone. For this special ex- ample, we alternatively use an exact eikonal Green's

function, thus extending the results of the Saxon-Schiff

eikonal method to include small cone opening angles and arbitrary complex dielectric constant and permeability

of the coating. In an appendix, the same problem is treated by the straightforward physical-optics approxi- mation. 16 p. (Paper 68D6-373, p. 749).

July 1964 Leader and junction processes in the lightning dis- charge as a source of VLF atmospherics, H. R. Ar- nold and E. T. Pierce Amplitude spectra are deduced for trains of leader pulses and of K pulses from assumed models of the field or current variations in the lightning discharge. A comparison is made with experimental observations. A size

distribution of K pulses relative to return stroke pulses

is established. Finally a comparison is made between

the spectra of atmospherics from leader, K and return- stroke pulses. These peak respectively at 20, 8, and 5 kHz, with corresponding relative peak amplitudes of

1:2:10. 6 p. (Paper 68D7-374, p. 771). The return stroke of the lightning flash to earth as a source of VLF atmospherics, A. S. Dennis and E. T. Pierce The field radiated during the current surge at the source is derived by a new method. The effects of changing such parameters as rate of current rise and

speed of channel development are indicated. Amplitude

spectra at 100 km are deduced for typical first and sub- sequent strokes in a discharge carrying negative electricity to earth, and for a positive stroke. The three spectra peak at approximately 5, 3, and 3 kHz, respecMearj amplitude spectra at 100 km are also deduced by

extrapolation back, making allowances for propagation,

of atmospherics observations. The average spectrum for a group of atmospherics obeys a simply normalized relation involving the frequency of maximum amplitude; this frequency changes between groups over the range of 4

to 7 kHz. The amplitudes, both on a broadband and a single-frequency basis, are log-normally distributed, with standard deviations of some 7 dB. Averaged spectra for groups of observations agree

quite well with those computed from the stroke parameters. However, it is found that the spectral shape varies extensively among individual atmospherics. 18 p. (Paper 68D7-375, p. 777). VLF propagation in a compressible ionosphere, R. B. Kieburtz The effect of finite compressibility of the electron gas is taken into account in the calculation of the propa- 161
gation constant and the power carried by a VLF wave

propagating in the ionosphere. The principal result is that the electromagnetic wave

("whistler" mode) and a quasi-acoustic or compressional wave are coupled near the critical, or maximum, angle of

the wave normal with respect to the direction of the geo- magnetic field. Near the critical angle, the direction of power flow is no longer constrained to lie within a nar- row cone of angles about the geomagnetic field, but energy can propagate in a quasi-acoustic mode at all angles up to the critical angle of the wave normal. Be- cause of collisional damping, the effects of finite compressibility do not appear to be detectable unless the

electron temperature in the outer ionosphere exceeds

104o K. lip. (Paper 68D7-376, p. 795). A spectrographs interferometer, R. H. Lee and J. W. Warwick The paper includes a description of the principal novelties of a swept-frequency interferometer operating between 7.6 and 41 MHz at the High Altitude Observatory

in Boulder, Colo., since July 1959- Records of Jupiter's decametric radio emission, and of a solar harmonic type

III burst are included, with a cursory description of the corner-reflector antenra system used to feed the re- ceiver. The receiver employs unique "minimum detection" circuits to reduce the deleterious effects of tele- communications stations on detection of the weak

astronomical signals of interest to us. For interferometry, the receiver uses an inversion circuit to present

both negative and positive fringes as darkening on the

final record, and to sharpen fringe crossovers. 5 p. (Paper 68D7-377, p. 807). Effect of lossy earth on antenna gain, part II, W. L.

Curtis The effect of lossy earth on the far field gain of an- tennas with finite size metal ground planes is investi- gated theoretically. In particular, an approximate ex- pression is derived for the ratio of free-space antenna

gain to the gain when the antenna is mounted on the

earth. The solution is based on the compensation

theorem and is dependent on the solution of a closely

related problem by J. R. Wait. 6 p. (Paper 68D7-378,

p. 813). Calculation of groundwave attenuation in the far dif- fraction region, L. E. Vogler This paper presents a graphical method of determining

the groundwave attenuation over a spherical homogeneous

earth in the far diffraction region. The curves are ap- plicable to either vertical or horizontal polarization and

to any combination of effective earth's radius, electro- magnetic ground constants, frequency, path distance, and antenna heights. A criterion is given that indicates

the method may be used not only for far beyond line-of- sight paths, but, in many practical situations, at line-of- sight or even slightly within. Examples illustrating the use of the formulas and curves are included. 8 p. (Paper 68D7-379, p. 819).

Some numerical results based on the theory of radio wave propagation over inhomogeneous earth, K. Furutsu, R. E. Wilkerson, and R. F. Hartmann

Several numerical examples are presented to show the predominant features of radio wave propagation over an inhomogeneous earth. These are based on the theories derived previously [Furutsu, 1957a, 1957b, 1959, 1963] in which the height and also the electrical properties of the earth's surface were assumed to change discontinuously several times along the wave path; thus, the

terrain represented could include ridges, cliffs, bluffs

at a coastline, etc. The theory is briefly reviewed, and

numerical results are presented for the spherical earth approximation and are compared to those for the flat earth approximation. For a perfectly conducting flat earth, there are well-known formulas available in terms

of the Fresnel integral, and the spherical earth results are compared to those obtained using these formulas to show the agreement at short distances. A few interesting phenomena are also illustrated, such as the obstacle

gain due to a ridge on a lossy ground and the variation

of field strength caused by a change of receiver (or trans- mitter) height when the wave is propagated over a mixed

path. Finally, sets of graphs are also included to aid

in evaluating the effects of a ridge or a cliff on a homo- geneous earth; they can be used when the propagation distances are sufficiently large on each side of the ridge

or cliff. 20 p. (Paper 68D7-380, p. 827). A note on VHF reflection from a tropospheric layer, J. R. Wait Some remarks concerning reflection from tropospheric

layers are made with special reference to a recent paper

by Bean, Frank, and Lane on the subject. It is indi- cated that the finite vertical extent of the layer must be considered in the analysis. 2 p. (Paper 68D7-381,

p. 847),

Some remarks on the use of statistics in radar astron- omy, I. Kay, 2 p. (Paper 68D7-382, p. 849).

A meteorological parameter for radioclimatological pur- poses, P. Misme

The author begins with a study of the index of re- fraction and shows that theoretically this index varies exponentially with altitude above a certain level. Making use of an example chosen at Hilo, Hawaii, he shows

that the curve of the index as a function of altitude shows a point of inflection, and this point of inflection

is proposed as the lower limit of validity of the exponential model. Then considering the variation of the altitude of the point of inflection along the two different meridians

(150 W and 80 W), an effect of season and of latitude is put in evidence. 5 p. (Paper 68D7-383, p. 351). 162
Extension of cosmic noise absorption lower frequencies, using polarized antennas, C. G.

Little, G. M. Lerfald, and R. Parthasarathy The cosmic-noise method of measuring absolute iono- spheric absorption requires a reliable knowledge of the

intensity of the cosmic radio noise which would be ob- served in the complete absence of the ionosphere. At

frequencies above 15 Mc/s this extraterrestrial intensity has hitherto been estimated by a method which assumes

that during ionospherically quiet, nighttime periods, the absorption becomes negligible. However, this "quiet- day" method leads to important uncertainties in the value

of the extraterrestrial cosmic radio noise intensity when

it is used at frequencies below about 15 Mc/s.

This paper describes a technique, based on simul- taneous measurements of the ordinary and extraordinary wave intensities, for obtaining the free-space intensity

of the cosmic radio noise at frequencies as low as 5 Mc/s. An experimental program is described which has

verified the usefulness of the method and shown some of

its limitations. The method is of value to studies of the spectrum of HF cosmic radio noise, and to the deri- vation of electron density profiles in the lower D-region using multifrequency absorption data. 7 p. (Paper

68D8-384, p. 859). Broadband radio-star scintilla! part I. Obs<

dons, D. G. Singleton Twelve months' observations of the scintillations of Cassiopeia A made with a swept-frequency interferometer operating in the frequency range 7.6 to 41 Mc/s are ex- amined statistically. The scintillations, which commonly

have bandwidths of 2:1 and larger, are occasionally as- sociated with apparent shifts in the position of the source. Two types of position shift patterns are observed. These are mirror images of each other and occur during different periods of sidereal time. The broad- band scintillations also occasionally exhibit dispersion. This effect is most marked before 0900 hours local sidereal time and after 0200 hours local time. The overall occurrence picture of the broadband scintillations is much as reported by other workers for scintillations ob- served at discrete frequencies. Broadband scintillation occurrence is found to correlate positively with the oc- currence of spread-F. The focus frequency of those

scintillations which exhibit position shifts is found to depend, in a simple way, on the parameters of the as- sociated spread-F configuration. Increasing magnetic

activity, which has little effect on the occurrence of the

scintillations, is found to be associated with a decrease

in the quasi-period of groups of scintillations. The

interpretation of these observations will appear in part

II of the series. 13 p. (Paper 68D8-385, p. 867).

F-region irregularities studied by scintillation of sig- nals from satellites, K. C. Yeh and G. W. Swenson, Jr. Scintillation of radio signals from earth satellites has been studied for five years during the declining phase

of the sunspot cycle. It is found that the character of

the scintillation, and thus, probably, of the ionospheric

irregularities that cause them, vary systematically with geomagnetic latitude, season of the year, time of day, and phase of the sunspot cycle. Nighttime scintillation occurs in the F-region, mainly at heights of about 350

km. This type of scintillation in most cases results from first-order scattering from weak, field-alined ir- regularities in electron density. In the Northern Hemisphere such scintillations are observed north of a certain parallel of geomagnetic latitude, the southern limit varying weakly with magnetic activity. Similar effects

are also observed in the Southern Hemisphere. Daytime

scintillations also show strong seasonal and sunspotcycle dependence but very little latitude dependence. The scintillation observations of the present investi- gation have been compared with observations of other manifestations of ionospheric irregularities, particularly spread-F and radio "star" scintillation. It has been ob- served that strong scintillation occurs simultaneously

with the occurrence of red auroral arcs. Scintillation, being more common than red arcs, may be a more sensitive indicator of ionospheric disturbances. 14 p. (Paper

68D8-386, p. 881). Angels, insects, and weather, A. H. LaGrone, A. P. Deam, and G. B. Walker This paper includes the resi i brief ob

period with an M-33, X-band radar. Data presented

those obtained by pointing the^ radar vertically and

serving the radar echoes as the targets drifted thrc the radar beam. Film recording of the data was uscu. Theoretical consideration of the radar problem for the various atmospheric phenomena and for animal-type sources was made to establish signal strength limits on

the expected signal and is reported. 7 p. (Paper 68D8-

387, p. 895). Measurement of the attenuation of radio signals by

jungles, J. W. Herbstreit and W. Q. Crichlow Recent interest in jungle communications has indi- cated the desirability of publishing quantitative field strength measurements made in jungles by the authors

during World War II. The jungle attenuation of radio signals is so great that for satisfactory communications

over distances greater than one mile, skywave propagation or elevated antennas should be employed. 4 p. (Paper 68D8-388, p. 903).

propagation, J. R. Wai

: depre

Propagation of VLF radio waves in the earth-iono- sphere waveguide is considered for the situation where

the ionosphere is depressed over a circular region. Using

first-order scattering theory, expressions for the ex- pected field perturbations are developed in the form

of double integrals. In a number of important special cases, these are expressed in closed form. In certain other situations, the integrations are carried out by nu- merical methods. The results confirm that a localized ionospheric depression may modify the received field 163
even though the ionosphere along the great circle path

is undisturbed. 8 p. (Paper 68D8-389, p- 907). An experimental study of mixed-path groundwave propagation, S. W. Maley and H. Ottesen A carefully controlled laboratory model study was

made of electromagnetic propagation between two an- tennas on the surface of an imperfectly conducting

ground plane over a path on which the parameters of the ground abruptly change at some point along the path. The experiment was done at X-band frequencies (10 Gc/s); the mixed path investigated was partly over water and partly over a metallic conductor. The experi- mental results were compared with theoretical work by

J. R. Wait; the comparison indicates that Wait's theory agrees well with the experimental data. 5 p. (Paper

68D8-390, p. 915).

Signal statistics, yesterday and today, F. L. H. M. Stumpers. 4 p. (Paper 68D9-391, p- 923). Rayleigh distribution and its

The Rayleigh distribution is the distribution of the sum of a large number of coplanar (or time) vectors with random amplitudes and uniformly distributed phases. As

such, it is the limiting case of distributions associated

with more general vector sums that arise in practical problems. Such cases are the following: (a) The phase

distributions of the vector terms are not uniform, e.g., in the case of scattering from rough surfaces; (b) One or more vector terms predominate, their mean square value

not being negligible compared to the mean square value

of the sum, e.g., in the case of signals propagated in cities, meteor-scatter, and atmospheric noise; (c) The

number of vector terms is small, e.g., in radar returns from several close targets; (d) The number of vector terms is itself random, e.g., in atmospheric turbulence, meteor-scatter and atmospheric noise. The resulting

distributions for these cases and their deviations from

the Rayleigh distribution will be considered. 6 p. (Paper

68D9-392, p. 927). Some nonlinear problems in the study of randor processes, M. Rosenblatt Two problems of a nonlinear character concerned with random processes are discussed. In both cases the processes are assumed to be stationary. The first problem is concerned with the representation of a discrete time parameter stationary random proc- ess as a one-sided function (nonlinear generally) of inde- pendent random variables and its shifts. This is a representation one might expect if the process is purely

nondeterministic. Comments are made on the continuous

parameter version of this problem, indicating that it is likely to be much more difficult and perhaps less important from a practical point of view. The second probr lem is concerned with the harmonic resolution of the

moments (of degree two or higher) of stationary random

processes. The harmonic resolution of third order mo- ments (the "bispectrum") is considered in some detail and remarks are made about statistical estimates of the bispectrum. 4 p. (Paper 68D9-393, p. 933). An approach to empirical tim alysis, E. Parzen

This paper attempts to develop a philosophy for empirical time series analysis, involving the routine use

of four data handling procedures (covariance estimation,

spectral estimation, autoregressive model fitting and

spectral estimation, and trend elimination and estima- mation) embodied in a computer program. The cross-spectral analysis of a pair of time series, each consisting of 4000 observations, requires approxi- mately 10 minutes on a 7090, including computation of covariances. Several examples of empirical time series analysis are given. 15 p. (Paper 68D9-394, p. 937). Effect of linear and nonlinear signal processing on sig- nal statistics, A. V. Balakrishnan The term "Signal Processing" is interpreted as an

operation on the signal that is deliberate (as distin- guished from the unavoidable) and arising from:

(a) Optimization: an operation on the data to optimize

extraction or detection as in radar or communication or similar applications.

(b) Routine data handling: operations such as sampling and/or quantitizing, scale changes, etc.

(c) Adaptive techniques: operations that are characteristic of adaptive systems where no a priori knowledge

of signals and/or system parameters may be available and a self-learning procedure is necessary. The main interest is in the effect of these operations on the signals; more specifically, if we represent the processor as a black-box, the signal being its "input," we

study the statistics of the "output" signal. We examine

certain aspects of these problems of recent significance

to radio physics. 13 p. (Paper 68D9-395, p. 953).

Randor olu. : scattering, H. Bremmer The disturbances produced by a slightly ii random medium on a passing wave can be classified into contributions depending on an increasing number of suc- cessive scatterings. The individual contributions appear

in an expansion of the solution of an integral equation. The first term, the Born approximation, only accounts

for a single scattering. Convenient expressions for this approximation result from a saddle point treatment for short distances, and from a Fraunhofer approximation

for larger distances. The evaluation of the higher-order

contributions, describing plural-scattering effects, leads

to mathematical difficulties which are evaded by considering the scattering mechanism as a Markovian process. The corresponding theory can be developed with

the aid of an integro-differential diffusion equation; the

latter refers to the joint probability density of the lateral and angular deviations suffered by the trajectory of the passing wave. The equation in question can be solved

with the aid of four-dimensional operational calculus; it reduces to the simple differential equation of Fokker- 164
Planck under special conditions. The application of the general equation to tropospheric point-to-point radio comnication is worked out. It is shown that the far-distance

field, associated in this case with multiple scattering, s decrease proportionally to the second or third power of the inverse distance. 15 p. (Paper 68D9-396,

p. 967). Phai fluci statistics, J. B. Smyth Over the frequency range between 107 c/s and 10

10 /s, radio seeing is controlled by the distortions in the phase of the waves propagating through the earth's at- osphere. For elevation angles above two degrees, the dominant effect is refraction of 100 Mc/s, the total bending of about one and one-half degrees is divided equally between the troposphere and ionosphere. Curves showing

sented for many cases of interest. Statistical frac- tions caused by instrumentation errors in measuring

the physical properties of the atmosphere, and by ir- gularities in the medium are summarized. 5 p. (Paper

68D9-397, p. 983).

.urrent topic: F. J. Zuckei

the stochastic theory of radiation,

[Tie stochastic properties of fluctuating ele

ic fields are defined in terms of the joint moments of

the probability distribution. Their physical interpreta- tions (coherence, higher order correlations) are briefly described, and the connection is indicated between the

__.nplete set of correlations and the quantum theory of

radiation. 5 p. (Paper 68D9-398, p. 989). On :nsity distributi S--HN)]

tics, M. Nakagami A few derivation methods of the distribution in the

title are discussed from some different viewpoints. It is found that this type of fading may be caused by the inter- ferences of two correlated waves. A transitional aspect

of the distribution due to the change of a parameter is illustrated in detail. Some applications of the distribution to signal statistics are discussed. The functional

similarity is found between the characteristic function and the error probability of signals. Using this basic

relation some error probabilities are estimated for various cases. 9 p. (Paper 68D9-399, p. 995).

ScaiSiddiqui inference for Rayleigh dis -ibuti

The main inference problems related to the Rayleigh

distribution are the estimation of its parameter and the

test of the hypothesis that a given set of observations is from such a distribution. It is shown that (in case of radio signals) the most efficient estimate of the parameter is obtained using the sample mean power. Complications may arise when data are missing or are autocorrelated. Methods are given to deal with such complications

also. 6 p. (Paper 68D9-400, p. 1005). A probabilistic approach to the problem of large antenna

arrays, Y. T. Lo

Antenna arrays of very high resolution can be designed

without using a large number of elements if they are spaced properly. However, there exists no general theory which would yield a solution to this problem because of

its analytical difficulty. In this paper a probabilistic approach is made despite the problem itself being not

probabilistic originally. This approach is tantamount to the study of all outcomes for many possible element

positions (under a certain rule) by invoking the well- known powerful law of large numbers in probability. From this investigation it is found that the sidelobe

level is closely related to the number of elements, and

to a much lesser degree to the aperture dimension. As a result extremely high resolution could be achieved with

very few elements. On the other hand, for a given number of elements higher and higher resolution could be

obtained by spreading these elements over a larger and

larger aperture whereas the sidelobe level would remain

substantially the same and the directive gain constant. Four sample arrays with 100 to 1000 elements have

been designed by the Monte Carlo method. Statistical properties of the computed patterns agree almost exactly

with those predicted from the theory. Their sidelobe

levels also agree with the theoretical values remarkably

closely. For practical interest it is shown that an array can be

actually designed to produce a beamwidth of about 1 minute of arc by using only 100 isotropic elements over

an aperture of 4xl03 wavelengths, the sidelobe level being -8.4 dB and the directive gain 20 dB over that of

a single element. For the sample array of 1000 ele- ments, the beamwidth is 0.5 minutes of arc with sidelobe

level of -18 dB. It is also possible to reduce this beamwidth appreciably. 9 p. (Paper 68D9-401, p. 1011). Influenc

catioi

: of dai of expi essing on the design £ s, S. W. Golomb

It is possible to define the relative significance of raw data bits in terms of the influence which they exert on the final processed information. In particular, if the data reduction program is specified in advance, then the experimental design and the communication system can

be designed for optimum accumulation of the relevant

data. Examples are given, involving nonstandard binary coding of telemetry to minimize the variance of the processed information, in terms of a conceptual deep- space experiment. This paper also considers the effect

of successive histogramming as a means of data reduction. 4 p. (Paper 68D9-402, p. 1021). Spectral measurement techniques in planetary radar, G. Pettengill The precise measurement of Doppler shift and dis- persion (frequency broadening) of a radio echo returned

from a planetary surface can yield useful information on

planetary orbits and surface characteristics. Methods 165
employed to measure Doppler displacements include banks of narrow receiving filters, phase-locked oscillator

loops, and digital sampling and calculational techniques. The latter, while complex and sometimes slower, offer greater flexibility and in some cases enable measure- ments not otherwise possible. 5 p. (Paper 68D9-403,

p. 1025). Quantum statistics and lasers, J. P. Gordon We consider the quantum statistical features of a linear process of amplification or attenuation. The results are then used to estimate the spontaneous fluctuations of a class of laser oscillators. Finally, the question of a quantum mechanical information theory is discussed. 3 p. (Paper 68D9-404, p. 1031).

Statistics of random surfaces, I. Kay and P. Swerling This paper is presented in two distinct parts. Part 1 begins by giving a number of examples of ran- dom surfaces and summarizing the various applications

of random surface theory, including applications to (a) electromagnetic scattering from such surfaces,

(b) the information content of photographs, maps, etc. interpreted as random surfaces, and implications

for bandwidth compression. This part of the paper will also summarize the major

results which have previously been obtained, and will outline the approaches used to obtain these results. Finally, some interesting additional problems in this field are stated. Part 2 of the paper is devoted to new results on the properties of random spherical surfaces, and the appli- cation to electromagnetic scattering from such surfaces. These results primarily concern the statistics of the number of specular points per unit surface area. The detailed elaboration of the mathematical approaches

to obtaining the major results of random surface theory, and even the exhibiting of the major formulas, would be

very complex and space consuming. Therefore, insofar as previously obtained results are concerned, we will merely give outlines and examples, with references to the appropriate literature for the details. Such detailed mathematics as appears in this paper is reserved for the new results presented in part 2. For convenience, the two parts have separate numbering for equations and references. 13 p. (Paper 68D9-

405, p. 1035). Modified Gaussian distributions for slightly nonlinear

variables, M. S. Longuet-Higgins Many random variables are almost linear, in the sense

that they can be represented approximately as the sum

of independent components in random phase. Such vari- ables (for example, the surface elevation in a random sea) may have a gaussian distribution in the first approximation. However in higher approximations the phases of the different components become correlated, due to nonlinear interactions. The purpose of this paper is to show theoretically what is the effect of such nonlinearities on the basic gaussian distribution.

The modified distribution is derived both for a single variable and for two or more related variables (such as

the components of slope of a random surface). The re- sults are applied in the first place to sea waves, and

are compared with observations. However the analysis

is applicable quite generally to any such nonlinear

variables. Two further problems are solved for weakly nonlinear

variables: the mean number of zeros per unit time of a

stationary random function £(/) and the distribution of the maximum values of £(/). These solutions are essentially generalizations of the well-known results of Rice

for gaussian variables. 14 p. (Paoer 68D9-406, p. 1049).

October 1964 Theoretical heights and durations of echoes from large meteors, L. A. Manning

Recent studies have shown that attachment as well

as diffusion is important in determining the electron- density distribution about the path of a meteor. The

present paper develops in detail the mathematical theory

of the durations of radio echoes from overdense trails. Included is the dependence of the height distribution of ionization on meteor magnitude, velocity, zenith angle,

the form of the attachment law, the height dependence of diffusion coefficient, and an adjustable relation between

luminous and ionizing efficiency. It is shown that well defined attachment-free and attachment-controlled duration regions exist with different line-density and wavelength dependences. The transition zone is broad, and

its location depends strongly on meteor velocity. Nor- malized duration and line-density parameters are defined in terms of which a single computer-calculated

duration versus density relation good for all parameter

values is plotted. Bridging formulas approximating the duration relation are derived from asymptotic expressions, and the relation between echoing height and duration or

line density is presented. Equations are given relating

the exponent of the wavelength to echo duration. In a companion paper, the theory will be applied to experi- mental data and the values of the physical parameters and constants will be derived. 12 p. (Paper 68D10-407,

p. 1067). Experimental determination of meteoric line densities and attachment rates, L. A. Manning A theory for the dependence of meteoric-echo heights and durations on meteor velocity and magnitude, and on

the radio wavelength, is used to interpret experimental meteor data of a variety of types. It is shown that the data set forms a more consistent whole on the assumption of a three-body than of a two-body attachment process. No velocity dependence is found for the ratio of

line density to luminosity. An attachment time constant

of about 100 sec is deduced for a reference height of 95 km, and a zero-magnitude meteor is found to produce a maximum line density of about 100x 10

14 electrons/m. Combination of the theoretical and experimental results makes possible calculation of the heights and durations

of meteor echoes under a full range of conditions. 15 p. (Paper 68D10-408, p. 1079). 166
Broadband radio-star scintillations, II. Interpretation, D. G. Singleton The focusing action of horizontal elongated irregularities of electron density in the ionosphere is considered. Expressions are developed for the general case where the azimuths of the radio star and of the short dimension of the irregularity may each be different from

the azimuth of the interferometer baseline. These ex- pressions appear to explain the main features of broad- band radiostar scintillations, namely (a) their bandwidth,

(b) their position-shift patterns, and (c) the nature of

their association with spread-F. To reconcile the theory with the occurrence data on scintillations which exhibit position shifts, it is necessary to postulate an irregularity movement towards an azimuth of 120°, i.e., a movement along the isoclines. 14 p. (Paper 68D10-409,

p. 1095). A discussion of the theory of ionospheric cross modulation, R. F. Benson The basic equations in the theory of ionospheric cross modulation are reviewed. The suggestion by Rumi that the variations in the electron density, caused by per- turbations of the attachment coefficient, can contribute

to the total cross modulation is considered. It is found

that the cross modulation resulting from these variations

is negligible compared to the cross modulation resulting from the variations in the electron collision frequency in the region above about 40 km. In the 30 km region, however, the two components are approximately equal. The

fractional change in electron energy as predicted by the

original theory of cross modulation, introduced by Bailey and Martyn in 1934, is compared with the same quantity as predicted by the alternate theory of cross modulation proposed by Huxley in 1953. Cross-modulation profiles are presented for these two

theories, corresponding to various model ionospheres, and discussed in light of previously published cross- modulation observations from College, Alaska. It is concluded that neither of the theories hold over the entire D region and that a new theory of ionospheric cross modulation is necessary. The requirements of such a theory, in order to be consistent with observations, are the following: for given ionospheric conditions the cross modulation should change sign in approximately the same height region as

is predicted by the original theory of cross modulation

but the absolute magnitude of the cross modulation, at least in the lower D region, should be equal to or greater than the value predicted by the alternate theory of cross modulation (which, in turn, is greater than the value pre- dicted by the original theory). A recent theoretical in- vestigation by Altshuler, which indicates an energy de- pendence for the fractional change in electron energy

similar to the predictions of the original theory, seems to satisfy the first requirement. The second requirement remains to be investigated. 14 p. (Paper 68D 10-410,

p. 1109). Electron collision frequency in the ionospheric D re- gion, R. F. Benson A brief review of the ionospheric D region electron

collision frequency information that is available from

rocket observations and laboratory investigations indi- cates that the equation vm

= 8.40xlC7 p (mm Hg) is ac- curate within about ±10 percent in the portion of the D

region above 40 km. The results of the cross-modulation experiment at College, Alaska, are in agreement with

this equation. 4 p. (Paper 68D10-4 11 , p. 1123). Theory of a slotted-sphere antenna immersed in a compressible plasma. Part I, J. R. Wait Radiation from a finite source in a compressible electron plasma is considered. The theoretical model is a perfectly conducting sphere which is excited uniformly by an annular slot. The configuration is such that Maxwell's equations, when combined with a (single-fluid) continuum theory of fluid dynamics, are separable. It is shown that a portion of the total power supplied by the source is radiated as an acoustic wave in the electron

fluid. 10 p. (Paper 68D10-412, p. 1127). Theory of a slotted-sphere antenna immersed in a compressible plasma. Part II, J. R. Wait Radiation from a source immersed in a compressible and lossy electron plasma is considered. The model is a dielectric-coated conducting sphere which is excited

uniformly by an annular slot. As in part I, it is assumed

that the fields in the isotropic plasma are governed by Maxwell's equations in combination with (single fluid) continuum theory of fluid dynamics. Formulas are de- veloped which should be suitable for computing the ad- mittance of the annular slot. 7 p. (Paper 68D 10-413,

p. 1137). Electromagnetic scattering coefficients for concentric spheres and the problem of interference free enclosures,

R. A. Eldred, H. A. Lasitter, and J. Roberts

With the purpose of increasing the information about

the lower frequency shielding effectiveness of closed

structures composed of various arbitrary materials, an

idealized problem is considered of the scattering and

absorption of a plane electromagnetic wave impinging on

a spherical shell. The region between the outer and inner radius of the sphere contains an arbitrary material; the other two regions are free space. The absorption and

scattering coefficients for the incident plane wave are expressed as an infinite sum of spherical waves, using

spherical Bessel functions. The coefficients are calculated numerically and shown for a large range of complex material parameters and frequencies from 100 kc/s

to 1000 Mc/s. Equations were programmed in FORTRAN,

and numerical calculations accomplished on the IBM

1620 computer. Combinations of complex material properties of permeability, permittivity, and conductivity were

sought which gave large, broadband absorption coeffi- cients. Several promising compositions have resulted, and are presented. The effects of varying the individual parameters are also discussed. 10 p. (Paper 68D10-

414, p. 1145). Ionospheric sounding using coded pulse signals, D. C.

Coll and J. R. Storey At present, ionospheric sounders rely on the trans- mission of high peak-pulse-power to provide for the de- 167
tection of received echoes. To allow for the detection

of signals with poor signal-to-noise ratios, the trans- mitted energy must be increased. It can be assumed that significant increases are not likely to be obtained through increases in the peak transmitted power. Also, any in- crease in transmitted energy achieved through a simple

increase in pulse duration is accompanied by a corres- ponding loss of range resolution. Pulse compression

signals provide an increase in transmitted energy, with- out an increase of peak power, and without a loss of range resolution. This paper describes an application of pulse-coded

pulse compression signals to the field of ionospheric

sounding. The signals used and their properties, their generation and reception, and the performance of an ex- perimental vertical sounder are discussed. The effects

of ionospheric and system perturbations on performance

are also considered. 5 p. (Paper 68D10-415, p. 1155). Measurement of the complex time-frequency channel cor- relation function, P. A. Bello The time and frequency selective fading properties of radio channels may be characterized by evaluating the cross-correlation function between two received carriers as a function of their frequency separation. In practice such correlation functions have been measured using

only the envelopes of the received carriers. Recent

studies of the effect of time and frequency selective

fading on digital data transmission have shown that en- velope correlation information is insufficient for an ac- curate evaluation of system performance and that the complex envelope correlation function is needed. This

paper presents an experimental technique for the measurement of the complex time-frequency correlation function of radio channels that uses independent frequency standards at transmitter and receiver. An analytical study is made of the theory of operation of this system

and of the effects of instabilities of the frequency standards. 5 p. (Paper 68D10-416, p. 1161). November 1964 Interaction of an antenna with a hot plasma and the theory

of resonance probes, J. A. Fejer The impedance and the radiation field in the sur- rounding hot plasma are calculated for an electrically short antenna that consists of two spherical conductors

excited through thin wires in phase opposition. In the calculation the pressure tensor is replaced by a scalar

pressure. A discontinuous model of the ion sheath is used. The losses due to the radiation of electromagnetic and electrostatic waves are calculated and are expressed

in terms of equivalent series resistances. The operation of resonance probes is discussed. It is shown that

their resonant frequency is well below the electron plasma frequency if the probe radius is much larger than

the Debye length. The significance of this result to both past and future ionospheric rocket probe experi- ments is pointed out. The limitations of the present

treatment are discussed. 5 p. (Paper 68D11-417, p. 1171).

Observations of earth-ionosphere cavity resonances and

their interpretation in terms of a two-layer ionosphere model, F. W. Chapman and D. Llanwyn Jones The frequencies of the resonance modes of the earth- ionosphere cavity have been determined by means of a

direct recording integrating spectrometer over a period

of one year and diurnal and seasonal changes have been

observed. The experimental data on the frequencies of the first few resonant modes are interpreted in terms of a model ionosphere consisting of two discrete homogeneous regions. A model which accounts for the ob- servations is derived and the propagation constant of extremely low frequency electromagnetic waves, appropriate to worldwide propagation has been determined

for the derived model. The results are compared with those obtained by other workers using a different ap- proach. 9 p. (Paper 68D11-418, p. 1177). On the theory of reflection of electromagnetic waves

from the interface between a compressible magneto- plasma and a dielectric, J. R. Wait

It is assumed that a warm plasma may be described

in terms of a continuum theory of fluid dynamics in combination with Maxwell's equations. The motions of the heavy ions are neglected but collisions with electrons

are accounted for by a constant collision frequency. For

these conditions, a solution is given for the reflection coefficient when a plane wave is incident obliquely onto

a homogeneous half space of plasma. A d-c magnetic

field is superimposed on the plasma in a direction parallel

to the interface between the plasma and the dielectric.

It is shown that previous solutions for a cold anisotropic plasma and a warm isotropic plasma are recovered as special cases. 5 p. (Paper 68D1 1-419, p. 1187). Propagation over plane earth through an exponential at- mosphere, I. H. Gerks and R. M. Anderson An exact solution is found for the field of a dipole over plane, finitely conducting earth through an atmosphere in which the refractivity varies exponentially with

height. The method of Hankel transforms is used, so that

the final result takes the form of an integral with infinite

limits. This integral is evaluated numerically for a

typical profile and for several wavelengths, and the re- sults are compared with those for a homogeneous atmosphere. At short wavelengths and large distances, the

stratified atmosphere above a plane earth can act as a very efficient waveguide. 7 p. (Paper 68D 11-420,

p. 1193). Propagation in nonuniform waveguides with impedance

walls, R. L. Gallawa Under certain conditions it is useful to exchange Maxwell's equations for an infinite set of coupled total dif- ferential equations; the set takes the form of generalized

telegraphist's equations. This is done for a parallel- plate waveguide with impedance walls and varying

plate separation. The characteristic modes of the waveguide are used in order that coupling between equations depends only on geometric perturbations of the guide 168
walls. The utility of the technique is demonstrated by evaluating the mode conversion in an over-moded waveguide containing a geometric perturbation. A comparison

with experimental work is presented for the perfectly conducting case. 13 p. (Paper 68D 11-421, p. 1201). Some approximate formulas cc electromagnetic waves from medium, R. Burman

ning the reflection of

stratified semi-infinite

A very simple first-order approximation to the formula

is found to be adequate for most practical calculations. A second-order approximation shows that the convergence

coefficient for a given propagation distance is almost independent of the number of reflections. 3 p. (Paper 68D11-425, p. 1225). Errors induced by the atmosphere in microwave range measurements, H. B. Janes and M. C. Thompson, Jr. Kane and Karp [ 1964] have given an approximate treat- ment of the reflection of electromagnetic waves at the plane interface between two homogeneous dielectrics. They introduced an approximate linear boundary condition which is a more accurate version of the well-known Leontovich boundary condition. It was noted that use

of the new boundary condition is equivalent to writing

the reflection coefficients of the interface in a certain approximate form. In the present paper some reflection coefficients for a continuously stratified semi-infinite medium are obtained in this approximate form by using known solutions for the field distributions. Linear and

exponential profiles of the refractive index are considered, for both horizontally and vertically polarized waves. 4 p. (Paper 68D11-422, p. 1215). A VLF timing experiment, A. H. Morgan and O. J. Baltzer The purpose of the experiment given in this paper was

to measure the differential phase stability of two VLF

carriers (19.9 kc/s and 20.0 kc/s) as received at Austin, Tex., as a function of the observing time, using the former low power standard frequency broadcasts of WVL,

Sunset, Colo. These measurements indicate that, at the distance in- volved (1400 km) and with an averaging time of a few

hours, the envelope or group delay variations will cause

a "jitter" in the received envelope zeros at the receiver

of less than one cycle at 20.0 kc/s. Therefore, a particular cycle of the 20.0 kc/s carrier as transmitted may

be identified at the receiver, thus providing "micro- second" timing. 4 p. (Paper 68D1 1-423, p. 1219). Phase and time variations in VLF propagation over long distances, D. D. Crombie

It is argued that the custom of referring to changes in the phase of VLF signals as changes in transmission

time is incorrect, is likely to lead to confusion and

should be abandoned. 2 p. (Paper 68D11-424, p. 1223). Geometrical optics convergence coefficient for whistler

propagation, G. McK. Allcock

It is shown that the formula, given by Crary [1964] for the convergence coefficient for whistler signals propa- gated by multiple reflection between a convex earth and

a concave ionosphere, can be considerably simplified. The simplified formula shows that the convergence coefficient for a given number of reflections is independent

of the height of the ionosphere, and that antipodal focusing would be expected. The convergence takes place

entirely in a horizontal direction transverse to the plane

of propagation.

This paper describes experimental measurements de- signed to study atmosphere-induced errors in microwave

baseline tracking systems. The ground-to-air configuration was simulated by 300 to 400 m baselines on level ground east of Boulder, Colo., and a fixed target antenna

on a mountain top at a range of about 15 km and a path

elevation angle of 44 milliradians. A radiofrequency of 9.4 Gc/s was used. Continuous recordings were made of variations in apparent range, range difference, and re- fractive index. The data are analyzed in terms of power

spectra. The correlation between range and surface re- fractivity variations and the correlation of range variations on adjacent paths are discussed. 7 p. (Paper 68D1 1-426, p. 1229). Some features of Es—ionization of the equatorial ionosphere. P. Bandyopadhyay and H. Montes

This paper, extension of an earlier work [Bandyopadhyay and Montes, 1963], examines certain features of the

c- and the /;-type of sporadic E from the data of some

South American stations near the magnetic equator. The

features examined include diurnal, seasonal, and lunar

variation of occurrences and correlations with geomagnetic disturbances. The occurrences of both Es-c and

Es-h are found to correlate with magnetic dip, being most infrequent near the magnetic equator. The paper also examines the results of an equatorial VHF forward scatter experiment and compares them with

certain features of Es-q noted before from Huancayo

ionograms and reported in the earlier work. The close agreement observed suggests that the irregularities of ionization which manifest themselves in the two different kinds of observations are either the same or have a com- mon origin. 1 p. (Paper 68D11-427, p. 1237). A note on the insulated loop antenna immersed in a conducting medium, J. R. Wait and K. P. Spies The impedance of a circular loop in an insulated cavity immersed in a conducting medium is discussed. The

results given in an earlier paper are extended. 2 p. (Paper 68D11-428, p. 1249). Observation and analysis of transequatorial propagation,

J. A. Thomas and B. A. Mclnnes The results of rotating backscatter sounder observations at 16 Mc/s from Brisbane are analyzed and dis- cussed insofar as they relate to anomalous transequatorial radio-wave propagation. The association of transequatorial ground backscatter echoes with large ionospheric

F-region tilts, which occur in equatorial regions in the evening hours, is shown. Ray-tracing calculations, for 169
radio waves traversing these tilts, show the possibility

of supermode propagation. Associated focusing effects can help explain the anomalous signal strength of the recorded echoes. The need for careful interpretation of backs catter echoes, in the presence of a number of propagation modes, is stressed. Comparisons of the results

of the ray tracings and the experimental records are made

for the 6th October, I960, and for the average conditions

of September I960. In both cases reasonable agreement

is obtained. 9 p. (Paper 68D11-429, p. 1251). December 1964 Experiment on the constancy of the velocity of electro- magnetic radiation, P. Beckmann and P. Mandics An experiment by Kantor, reporting results in sharp

contradiction to Einstein's Second Postulate, was re- peated using the coherent light of a laser. The results were found to be consistent with the Special Theory of Relativity. It is concluded that the ballistic hypothesis

of light propagation disregarding the effect of air is in- correct. It is pointed out that the direct experimental evidence in favor of Einstein's Second Postulate is sur- prisingly meager and further experiments to confirm or reject the ballistic hypothesis are envisaged. 6 p. (Paper 68D12-430, p. 1265). Measurement of the phase velocity of VLF propagation

in the earth-ionosphere waveguide, F. K. Steele and

C. J. Chilton For short periods of time during June and July of 1963

the U.S. Navy transmitters located at Jim Creek, Wash. (NPG), and Balboa, Panama (NBA), simultaneously trans- mitted a frequency stabilized signal of 18 kc/s. The

phase and relative amplitude of these signals were monitored at Boulder, Colo.; College, Alaska; Maui, Hawaii; and Tucuman, Argentina. A semiempirical method by which the mean relative phase velocity can be calculated

from the measurements of phase made at these four re- cording sites is demonstrated. The values of the mean

relative phase velocity at 18 kc/s which are obtained

for daytime and nighttime propagation conditions are respectively, (V

p /c) d = 0.998 and (V /c)

n = 0.995. 5 p. (Paper 68D12-431, p. 1269). Wave hope theory of long distance propagation of low- frequency radio waves, L. A. Berry The idea that long radio waves propagating between the

earth and ionosphere via discrete hops can be extended

far into the shadow region by evaluating a series of complex integrals is exploited in this paper. Illustrative calculations of LF and VLF hops and total fields are shown as a function of distance. The second and higher hops show a pseudo-Brewster angle just before the caustic and attenuate like groundwaves in the shadow

region. The form of the series of integrals for an anisotropic ionosphere is given, and a model anisotropic ionosphere

varying with height is used in a sample calculation. Only a small error is caused by writing each hop as

the product of an effective ionospheric reflection coefficient and an integral which is a function only of the other characteristics of the path. 10 p. (Paper 68D12-

432, p. 1275). Wave propagation in a compressible ionosphere. Part I, S. R. Seshadri

In this paper, which consists of two parts, an extension of the magneto-ionic theory is systematically de- veloped by employing the linearized, single fluid, con- tinuum theory of plasma dynamics. The cubic equation

specifying the square of the phase velocity of a plane wave, whose direction of propagation makes an arbitrary angle with that of the static external magnetic field, is derived. In the first approximation in which only the phase velocities of the order of the velocity of the elec- tromagnetic waves in free space or higher are sought,

the general cubic equation is found to degenerate into a variant of the well-known Appleton -Hartree equation. The regions of the normalized source frequency fl and

the normalized gyromagnetic frequency R, in which the ordinary and the extraordinary, purely transverse electro- magnetic modes propagate are discussed with the help

of a construction in the Q

2 — R

2 plane and with emphasis

on the procedure used in the designation of the two modes. It is found that the dispersion curves for the

arbitrary direction of propagation do not continuously go

over to those for the direction parallel to that of the

static magnetic field. An inconsistency in the designation procedure for the modes is found to exist in the magneto-ionic approximation, lip. (Paper 68D12-433,

p. 1285). Wave propagation in a compressible ionosphere. Part II, S. R. Seshadri

In this part of the paper, the higher order approximations to the general dispersion equation are considered.

It is shown first that the results of the first approximation are also found to be valid in the neighborhood of

12 = 0, even though the phase velocity goes to zero for the value of 12. The second approximation which gives

correctly the phase velocities of the order of the acoustic

velocity a, in the electron gas or lower and the third approximation which yields the phase velocities of the order yJaCa are worked out. A synthesis of the results of the first three approximations yields the dispersion curves for the three independent modes which propagate

in an electron plasma. The dispersion curves for the three modes obtained as a result of the first three approximations are not valid

in the axial boundary layer, where the dispersion is found to undergo rapid changes in the close neighborhood

of the frequencies 12 =R and 0=1. Using the boundary

layer techniques, the dispersion equations in the axial boundary layer, for the frequencies in the close neighbor- hood of £1= R and 12 = 1 are obtained and analyzed. The

boundary layer analysis clarifies the mechanism of coupling between the purely longitudinal plasma waves

and the purely transverse electromagnetic waves. With

the knowledge of the above coupling that takes place in the axial boundary layer, the three independent modes

may be properly designated using a procedure which is found to be uniformly valid for all directions of propagation and the inconsistency found in the magneto-ionic 170
approximation is removed. 11 p. (Paper 68D12-434,

p. 1297). Spacial properties of the amplitude fading of continuous HF radio waves, J. Ames

Amplitude fading of 17 Mc/s CW signals is observed on

12 dipole antennas evenly spaced in two perpendicular rows each about 300 m long. The signals are ionospherically propagated over approximately east-west 20 to 35 deg N latitude paths of 1840, 3741, and 5724 km. The

number of hops on the two shorter paths is determined by oblique, step-frequency soundings.

Periodic spatial fading patterns consisting of approxi- mately straight, parallel nulls exist 33 percent of the time on the 1840 km signal and 10 percent of the time on

the 5740 km signal. Mean null spacing on the 3741 km

signal varies from 1.4 km during periods of 1 — F propagation to 0.4 km during periods of 3-F propagation. The periodic fading patterns are shown to be caused

by multipath interference between rays. A tendency for the nulls to have a diagonal position, with respect to the

great circle connecting the transmitter and receiver, is found to be a result of small azimuthal ray deviations caused by small transverse ionospheric tilts. During two magnetic storms the lateral ionospheric

tilt over the 3741-km path appeared, from the fading

pattern measurements, to be less than normal during the

first 10 hr, and somewhat greater than normal during the remainder. During one of these storms the fading patterns were much more periodic than usual, implying that the random variations in ionization density were smaller

than usual. These results show that measurement of the direction

of fading patterns on the ground is a sensitive technique

for studying small ionospheric tilts. In addition, it ap- pears that dual space-diversity reception, over paths where lateral ionospheric tilts of one predominant di- rection are encountered, can be optimized by spacing

antennas along a line normal to the predominant null

direction. 10 p. (Paper 69D12-435, p. 1309). Physical properties of the polar winter mesosphere ob- tained from low-frequency propagation and partial re- flection studies, J. S. Belrose, L. R. Bode, and L. W. Hewitt

During the winter of 1963-64 observations of partial reflections at a frequency of 2.66 Mc/s were made at Resolute Bay (invariant magnetic latitude 84j°) near

local midnight. Utilizing the different amplitudes of the ordinary and extraordinary backscattered waves, information was obtained about electron densities and electron

collision frequencies. Electron densities range from 10 cm"3 at 80 km to 1000 cm"3 at 110 km. Collision fre- quency values are a factor of 2-4 times greater than average daytime results at lower latitudes. These ob- servations, together with some indirect inferences based

on low frequency propagation between Thule and Churchill

(invariant magnetic latitude 79 i° at path midpoint) are discussed and it is concluded that (1) galactic cosmic

rays are responsible for electron production below 90 km,

(2) ionization rates in excess of galactic cosmic ray production are required for heights above 90 km, (3) effective electron loss rates below 90 km are markedly more rapid than dissociative recombination, and (4) the polar winter mesosphere is hotter than previous data

suggest. 5 p. (Paper 68D12-436, p. 1319). Reply to the "Remarks by Donald H. Menzel with Refer- ence to Bailey's Comments on Solar Electric Fields,"

V. A. Bailey, 2 p. (Paper 68D12-437, p. 1325). TITLE PAGE AND CONTENTS TO VOL. 68. 11 p. PAPERS FROM THE JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, SEC- TION D. RADIO SCIENCE, VOLUME 69, JANUARY- DECEMBER 1965

Some problems of ionospheric nonlinearities, D. H. Menzel The theoretical solution of the problem of the propagation of radio waves through an ionized medium depends

on Maxwell's well-known equations, together with the equation of motion of a free electron. This last equation,

in general, contains a large number of terms. In addition to the purely electromagnetic terms, there are others expressing the interaction of the electron with the medium

itself. The solution requires one to determine the complex index of refraction as a function of the applied radio frequency. The problem is even more involved, in some

cases, because magnetohydrodynamical terms may enter

into the expression. Sound waves or shock waves in the medium, for example, can impress themselves on the complex index of refraction. As a result, dynamical and magnetohydrodynamical interactions can lead to the coupling of fields that otherwise would be independent.

7 p. (Paper 69D1-438, p. 1). Some nonlinear phenomena in the ionosphere, V. A. Bailey The historical development is described of the idea

that sufficiently strong radio waves can modify the properties of the ionospheric regions which they traverse. The modified primary properties are the electron temperature and collision frequency, the rates of electron attachment and recombination, and the excitation and

ionization of molecules. The resulting changes in the collision frequency and

electron density modify the region's absorption coeffi- cient and refractive index for any wave, including the modifying wave itself. These lead to the phenomena of wave interaction and self-distortion, respectively. The associated mathematical theory includes the important effects on gyrowaves due to the presence of the earth's magnetic field. The principal predictions of this theory and their subsequent experimental verification are discussed. Applications of this theory to the study of the ionos- phere and laboratory plasmas are indicated. These in- clude control of the ionosphere and the generation of

artificial airglows (or aurorae) by means of powerful gyrowaves. 171
The possible modification of the ionosphere by low- frequency extraterrestrial radio waves is also considered; such waves include geomagnetic disturbances. They may arise from hydromagnetic disturbances in the solar wind and from fluctuating screening by plasma clouds of postulated electric charges on the sun. 16 p. (Paper

69D1-439, P- 9).

An experimental study of gyro interaction in the iono- sphere, at oblique incidence, F. H. Hibberd

This paper describes further experiments on the inter- action between a gyro disturbing wave and an obliquely

incident wanted wave in the night time lower E region. The results fully confirm those reported some years ago concerning the enhanced effect at the gyro-frequency. Average values of Gv of about 800 sec

-1 were obtained, with a height variation consistent with a scale height

of the order of 8 km. The effects of multipath interfer- ence and the problem of the energy loss factor G are described in the appendixes. 7 p. (Paper 69D1-440,

p. 25). On some nonlinear phenomena in the ionospheric plasma,

P. Caldirola and O. De Barbieri

In the first part of the paper we calculate and discuss

the distribution function of the electrons of a slightly ionized plasma under the influence of an external magnetic field and of an e.m. wave of the type E=E0 cosoj/.

It is shown that, taking into account both elastic and

inelastic collisions between electrons and molecules, it is possible to calculate explicitly the mean electronic energy due only to the absorption of the extraordinary wave of the electric field and that it is maximum at the

gyromagn< The study of

the effects of inelastic collisions shows that in order

to have an equal electronic temperature, the intensity of the electric field must be, in the case of inelastic col- lisions, about five times greater than that for elastic collisions only.

In the second part of the paper we calculate, for the wave E= E0 cosoW, the components of the complex dielectric permittivity tensor, that are given by expressions dependent in a rather complicated way on E0

. It is shown

that if E0 is sufficiently small they can be simplified

and, using a suitable perturbation technique, it is possible to calculate a nonlinear dispersion relation. This

relation contains explicitly E0 , and, for E0 ->0, becomes

the Appleton-Hartree formula. Furthermore, it shows

that in the nonlinear case, too, the electric field is

split up into two components whose propagation is never

independent.

In the third part of the paper we calculate and study

the electronic distribution function and the complex di- electric permittivity tensor for a wave of the type E = E0 [l + r

? cos(ar+/3)] cos w / with a>-cj» a. 26 p. (Paper 69D1-441, p. 33).

Ionospheric cross modulation: A microscopic theory, D. Layzer and D. H. Menzel

In 1937 Bailey and Martyn proposed a theory of iono- spheric cross modulation along the following lines. Ra-r diation emitted by the disturbing transmitter is strongly absorbed in a region of the ionosphere where the wanted wave is refracted and attenuated. Absorption of the disturbing radiation raises the temperature of the iono- sphere. If the amplitude of the disturbing radiation varies

with time, so will the resulting temperature increase and hence the attenuation suffered by the wanted wave. In the simplest experimental arrangement the wanted wave is initially unmodulated and the disturbing radiation is modulated at a definite audio frequency. In traversing

the ionosphere, the wanted wave becomes modulated at the frequency of the disturbing radiation and also at twice this frequency. The Bailey-Martyn theory makes three quantitative predictions concerning the transferred modulation. The

first concerns its dependence on the power of the dis- turbing radiation, and involves only the assumption that the effect is small enough to warrant a linearized description. The remaining two predictions concern the dependence of the transferred modulation and its phase

lag on the modulation frequency. These predictions in- volve the additional assumption of a unique relation, valid for all values of the modulation frequency, between

the mean thermal energy and the mean collision frequency

of the electrons. A relation of this kind can exist, however, only for modulation frequencies much less than 150 c/s. Since the experimental range of modulation

frequencies extends to nearly 1500 c/s, the foundations

of the Bailey-Martyn theory need to be reconsidered. This paper describes a microscopic theory of iono- spheric cross modulation. The velocity-distribution function for the electrons enters explicitly into the theory;

it is determined by a differential equation whose form depends on the modulation frequency. Knowing the distribution function, one can calculate the absorption coefficient. The form of the predicted absorption coeffi- cient .depends on the assumed form of the electron- molecule interaction law. By numerical methods, we

have calculated the transferred modulation and its phase

lag as functions of modulation frequency for a few simple interaction laws. The calculations show that the ef- fects of departures from a maxwellian velocity distribution are indeed significant. The predictions are sensitive

to the assumed form of the electron-molecule collision

law. Although the present theory is still highly idealized,

the results obtained suggest that further theoretical and

experimental refinements could lead to an experimental

determination of the electron-molecule interaction law

in the D region. 10 p. (Paper 69D1-442, p. 59). VLF noise bands observed by the Alouette I satellite,

J. S. Belrose and R. E. Barrington Alouette I observations of VLF ionospheric noise or hiss have revealed some interesting features of such

noises when received within or above the ionosphere.

In addition to emission bands whose frequencies are relatively independent of position, or vary sporadically

with position, the satellite often sees an emission band
(or bands) with a well defined lower frequency that in- creases with decreasing magnetic latitude of the satellite. On occasion similar emissions are "triggered" or enhanced by short and long fractional hop whistlers propagating past the satellite, which places the generation region in the vicinity of the satellite. The most

regular noise bands are found in a rather narrow zone

defined by magnetic L values between 2.5 and 4, in- variant magnetic latitudes 50 to 60°, but bands with a stronger dependence on the magnetic field are sometimes

found at higher latitudes. Observations during full sweeps of the satellite across the magnetic equator have

revealed that the variable frequency band seen in the Northern Hemisphere can sometimes be repeated at al- most exactly corresponding L values in the Southern Hemisphere. At the time of major noise storms, the auroral zone is sometimes well defined by the observations, as lying between L values of 4 to 9, magnetic latitudes 60 to 70°.

It is not possible at present to give any final explanation of these noise bands, but certain of their features

are discussed in the light of current theories of the generation of VLF ionospheric noise. 8 p. (Paper 69D1-

443, p. 69). Excitation of optical radiation by high power density

radio beams, L. R. Megill We calculate the power density required to excite various states of 02 and O which may be expected to radiate light observable from the ground. These calculations are made by first calculating the electron energy

distribution functions in the presence of the RF electric

fields, and from this the rate of excitation of the radiat- ing states. We discuss the feasibility of experiments to generate sufficient intensity to cause appreciable modification in the night airglow intensity. The possibility

of performing experiments using the two body dissociative attachment of electrons is also considered, especially in regard to the performance of basic experiments

in atomic physics. 6 p. (Paper 69D1-444, p. 77). Alteration of the electron density of the lower ionosphere

with ground-based transmitters, P. P. Lombardini Using computational techniques as described by Carleton and Megill, and Megill to calculate the difference between rate of attachment of electrons to 02 and the ionization rate in air as a function of electric field, the power required to create breakdown in the ionosphere has been calculated. These calculations are compared

with extrapolated microwave breakdown data and found

to agree satisfactorily. The propagation of the primary beam is altered by the electrons created by it. This gives origin to a nonlinear problem, which is very difficult to deal with in the general case. However, a steady state approximate solution has been found, considering diffusion in one dimension. The solution is applied to the design of a possible at- mospheric experiment. 12 p. (Paper 69D1-445, p. 83). Collision effects in hydromagneto-ionic theory, H. K. Sen and A. A. Wyller A hydromagneto-ionic theory has been developed within

the framework of the Burgers formalism [1958a] which is

a microscopic theory based on moments of the Boltz- mann transport equation. The effects on electromagnetic wave propagation of electron-electron and electron-proton

collisions have been considered to the order of Chapman

and Cowling's second approximation. The present theory

is an extension of the magneto-ionic theory derived

earlier by one of the authors [Wyller, 196l] for a fully ionized hydrogen plasma, in that it includes the effects

of ion motions. The theory is therefore applicable to the high as well as the low frequency modes of wave propagation, such as the whistler, Alfven, and the retarded magneto-acoustic modes. Expressions have been derived

for the refractive index, absorptivity, the wave polarization, and the zeros and infinities of the refractive index. Numerical applications have been given for the four characteristic modes of low frequency wave propagation,

viz, the whistler mode, lower hybrid frequency, ion gyro- resonance, and the hydromagnetic mode. Applications

of the theory to the solar corona, and future extensions

to the terrestrial ionosphere have been indicated. 15 p. (Paper 69D1-446, p. 95). Electromagnetic wave reflection from an oscillating, collision-free magneto-ionic medium, O. E. H. Rydbeck A collision-free or low collision magneto-ionic medium

is easily perturbed by a driving or pumping wave, even of moderate power. Unless the pump wave has longitudinal propagation, it will generate longitudinal electron velocities as well as differential space charge densities. These quantities, as well as the transverse, pump field electron velocities, will affect the propagation of any

(low power) signal or probing' wave propagating through

the medium, which now has oscillating and traveling electron velocity and electron density ripples.

If the pump wave has an angular frequency a> , and

that of the signal wave is o> , two first order sum and

difference frequency (&j +1 = a> -cj s

) waves are generated

in the medium. It is shown that the generation of these waves, for which specific refraction laws hold, is greatly enhanced if a parametric traveling wave resonance de- velops in the system or if the nonlinear driving force ex- periences a local resonance. Under certain conditions, sum and/or difference frequency waves, usually with two kinds of polarization, will radiate away from the resonance interaction region. This generation is dealt with in detail for homogeneous media, with a discontinu- ous boundary, and for slowly inhomogeneous ones. Waves of this kind should be generated easily by a topside sounder of moderate power. It should also be

possible, with present day techniques, to record sum

and difference frequency "echoes" at the ground, if a

very powerful pump wave transmitter were used. It is interesting to note that not only the true height of normal

reflection (at oj e = a,

s

, where a>

e is the angular plasma

frequency) but also the electron density gradient, at the same level, should be obtainable by such measurements,

provided co »a> s

- Since cj could be left unchanged,

while a>

s is swept through the sounding range of interest, the technical arrangements for such experiments, which

might be very rewarding, should not be overly complicated. 28 p. (Paper 69D 1-447, p. 111). Nonlinear propagation of electromagnetic waves in magnetoplasmas. II., M. S. Sodha and C. J. Palumbo

In this communication the authors have investigated

the nonlinear propagation of an electromagnetic wave at 173
an arbitrary angle to the direction of the magnetic field

in a plasma. The authors have derived an expression

for the complex conductivity tensor of a Lorentzian magnetoplasma, which is correct to terms involving the square of the amplitude of the electric vector. This ex- pression, along with the wave equation, has been used

to analyze two specific problems, viz, the propagation of an electromagnetic wave in an infinite magnetoplasma

and reflection and refraction at the interface of a nonlinear magnetoplasma and a linear isotropic medium. 1 p. (Paper 69D1-448, p. 139).

Electromagnetic wave penetration of reentry plasma

sheaths, M. P. Bachynski Methods to enable electromagnetic waves to propagate

through the sheath of plasma created by a high speed

vehicle reentering a planetary atmosphere are reviewed

and compared. Attention is paid to the possibilities of employing very high frequency waves, low frequency waves, of creating magneto-ionic wave modes by imposing static magnetic fields, and of modifying the plasma

by chemical seeding and aerodynamic effects. None of the techniques are without major limitations and considerable experimental studies are still required to es- tablish their feasibility. 8 p. (Paper 69D2-449, p. 147). On the use of refractive index diagrams for source-excited

anisotropic regions, L. B. Felsen The use of refractive index diagrams in the study of plane wave propagation in unbounded and layered anisotropic media is reviewed and then extended to account

for certain aspects of the radiation from confined source

distributions. Such items as the radiation condition, saddle point location, focusing effects, lateral ray tra- jectories, Cerenkov radiation, and others are interpreted

via the refractive index plots. While some of this material is available in various technical publications, the aim here is at a more unified presentation. 15 p. (Paper

69D2-450, p. 155). Surface waves along a perfectly conducting plane covered

with semi-infinite magneto-plasma, S. Adachi and

Y. Mushiake The electromagnetic fields in the semi-infinite magneto-plasma bounded by the perfectly conducting plane in the presence of the infinite electric line current of an

arbitrary phase constant are derived in integral forms using Fourier transform method. The propagation characteristics of the possible surface waves excited along

the conducting plane in arbitrary directions with respect

to the direction of magnetization are discussed in detail.

5 p. (Paper 69D2-451, p. 171). On the point of emergence of a microwave beam entering

a linearly graded plasma, A. L. Cullen A beam of microwave radiation is assumed to enter a

linearly graded plane-stratified plasma. If the electron density reaches the critical value a>

2e 0 m/e2 at a distance

x from the plasma boundary, ray theory predicts that the

beam will emerge from the plasma at a distance 2x sin 26 from its point of entry, 0 being the angle of incidence. The validity of this result is studied using wave theory.

2 p. (Paper 69D2-452, p. 177). Self and mutual admittances of waveguides radiating into plasma layers, J. Galejs The self and mutual admittance of waveguide backed

slots radiating into a plasma (or dielectric) layer has

been formulated in a laterally unbounded geometry. The

admittance expression involves integrals that may be ap- proximated by summations for numerical calculations. For a constant mesh size approximation to the integrals

the summations are the same as obtained in earlier work, where the plasma layers are considered to be within a wide waveguide. The accuracy of the solution is im- proved by decreasing the mesh size used for the numerical integration, which is equivalent to increasing the size of the large guide in the waveguide model. Mutual admittance calculations between two-parallel

slots show that the presence of a plasma layer decreases

the mutual admittance relative to its free space value, lip. (Paper 69D2-453, p. 179). Effect of electron collisions on the formulas of magnetoionic theory, K. G. Budden

In the standard simple treatment of magneto-ionic

theory the effect of collisions is allowed for by assuming that an electron experiences a retarding force pro- portional to its velocity, and the two complex refractive indices of an ionized medium are then given by the Appleton-Hartree formula. Experiments have shown,

however, that the collision frequency is approximately

proportional to the square of the electron's velocity, and proper allowance for this, using the Boltzmann equation, leads to a modification of the Appleton-Hartree

formula which was given by Sen and Wyller. In this tutorial paper the same modified formula is derived, but by a different method which, it is hoped, can be followed

by readers not intimately familiar with the previous

literature. Some numerical results are presented in which the modified and unmodified formulas are compared. It is concluded that the standard AppletonHartree formula can be used without modification for nearly all radio propagation problems in the ionosphere, provided that the correct effective value of the collision frequency is used. The modifications may be important, however, in the theory of wave interaction and for waves

of very low frequency whose wave normals are perpendicular to the earth's magnetic field. 21 p. (Paper 69D2-454, p. 191). Momentum transfer collisions

trons, M. H. Mentzoni

i for thermal elecThe electron collision frequency for momentum transfer, v , has been determined by microwave methods in an oxygen plasma for temperatures between 300 and 900°K. It was found that the measured average electronneutral collision frequency was consistent with v em

being proportional to the square of the electron velocity when a Maxwellian velocity distribution is assumed for 174
the electrons; e.g., i> em(«)= 4.4x 10" 8 x /V(02

) xu (sec" 1 ), where u is electron energy in electron volts and /V(02 )is

the number density of oxygen molecules. The resultd also indicated that electron-ion collisions are important

at the lower temperatures with the values of u .in agree- ment with the ones recently reported by Chen. 5 p. (Paper 69D2-455, p. 213). Experimental studies of perturbations in ionospheric plasma, L. H. Heisler An account is given of some of the more important experimental procedures for observing perturbations in ionospheric plasma, and mention made of significant data derived from these observations.

Particular reference is made to investigations recently

instigated using a new type of ionospheric recorder or ionosonde which is providing valuable data on many

aspects of the phenomenon. 7 p. (Paper 69D2-456,

p. 219). Electromagnetic scattering by gyrotropic cylinders with

axial magnetic fields, W. C. Y. Lee, L. Peters, Jr., and C. H. Walter The modified geometrical optics method is applied to find the radar cross section of an infinite, gyrotropic,

circular cylinder with an axial magnetic field. The re- sults compare favorably with those obtained using the boundary value solution. The modified geometrical optics method offers the advantage that it may be applied

to a general cylindrical cross section without further de- velopment. It may also be applied to other orientations

of magnetic field but the computations are much more

tedious. 3 p. (Paper 69D2-457, p. 227). Radar cross sections of plasma bodies at the plasma fre- quency, L. Peters, Jr. Two components of the radar cross section of a plasma

body at the plasma frequency are considered. These are

the specular reflection and the creeping wave components. The specular component is obtained by use of the Fresnel reflection coefficient and the creeping wave component from that for the perfectly conducting body which is adjusted by means of a loss attenuation factor. The method is applied to the sphere and the resulting cross sections compare favorably with those obtained

using the exact solution. These methods can be applied

to smooth bodies other than those of spherical shape and

to dielectric-constants other than zero provided the creeping wave component for the perfectly conducting body is known. 3 p. (Paper 69D2-458, p. 231). Electroacoustic waves excited by a space vehicle in ionized atmosphere and its effect on radar return, K. M. Chen

When a conducting space vehicle in the ionosphere is illuminated by an incident electromagnetic wave from the ground, a current and charge are induced on the vehicle. The induced current and charge in turn generate two

scattered fields in the ionosphere; the electromagnetic (EM) and an electroacoustic (EA) wave. A part of the

EA wave is converted to an EM wave across the discontinuity of the ionosphere and reaches the ground. As the

result, the radar return of a space vehicle in the iono- sphere is greatly enhanced. In this paper, the case of a conducting cylinder in a plasma and illuminated by an EM wave is considered. The induced current and charge

on the cylinder are determined and the scattered EM and EA waves are calculated. The corresponding radar cross

sections due to EM and EA waves are defined. It is shown that the enhancement of the radar return due to an EA wave bears some resemblances to the large out- bursts of the reflected HF signals from the satellites observed by Kraus. 7 p. (Paper 69D2-459, p. 235). Discussion on basic equations with source terms in compressive and incompressive plasmas, K. M. Chen

It is shown that the same set of basic equations with source terms can and should be applied to both a compressive and an incompressive isotropic plasma. In a compressive plasma, an electric source can excite an

electroacoustic wave. In an incompressive plasma, however, this electroacoustic wave reduces to an accumulation of charges shielding the electric source. The

physical meaning of the dielectric constant of an incompressive plasma is discussed and the physical model of an incompressive plasma is reexamined. 3 p. (Paper

69D2-460, p. 2439. Scattering of electromagnetic and electroacoustic waves

by a cylindrical object in a compressible plasma,

J. R. Wait The theory of wave propagation in an inhomogeneous

compressible plasma is considered. Cylindrical configurations are chosen such that Maxwell's equations, when combined with a (single fluid) continuum theory of

fluid dynamics, are separable. It is shown that general expressions for the fields are superpositions of TM

(transverse magnetic), TE (transverse electric), and

acoustic waves. For oblique incidence, these three wave types are mutually coupled except in special cases.

10 p. (Paper 69D2-461, p. 247). Multiphase periodic very-low-frequency emissions, N.

Brice When periodic very-low-frequency (VLF) emissions of more than one set are observed concurrently (multiphase emissions) the observation of three sets symmetrically spaced is surprisingly frequent. Evidence is presented which suggests that two sets represent a transient situation, and that the strength of one emission may depend

on the strength of, and the elapsed time since the pre- ceding emission. The data are interpreted as evidence

of a relaxation phenomenon in the generation of discrete VLF emissions, and a qualitative explanation of the stability of symmetrical three-phase emissions is given. 8 p. (Paper 69D2-462, p. 257). Radio studies of the high-latitude ionosphere during the solar eclipse of 20 July 1963, R. D. Hunsucker An investigation of the effects of the total solar eclipse

of 20 July 1963 on the high-latitude ionosphere was con- 175
ducted at various locations in Alaska. Simultaneous ob- servations of HF forward propagation and vertical inci- dence sounder measurements of various ionospheric parameters indicated marked changes in E- and Fl-layer

critical frequencies and virtual heights during the eclipse. Riometer measurements of absorption of 27 Mc/s were made at Tonsina, Ft. Yukon, and College, Alaska and

eclipse effects were observed at all three stations. Because of auroral corpuscular precipitation effects and the

difficulty in obtaining an accurate quiet day curve, it was very difficult to determine quantitative D-region ef- fects due to the eclipse. 6 p. (Paper 69D2-463, p. 267). VLF and LF fields propagating near and into a rough

sea, R. M. Lerner and J. Max A heuristic theory for VLF and LF fields near and in a rough sea surface is obtained by first finding the elec- tromagnetic field configuration in air and then calculat- ing the undersea fields by means of the HelmholtzKirchoff Integral Theorem. The fields above the water

are found by a succession of quasi-static approximations which depend on the observation that the scale of ir- regularities on the sea surface is very small compared

with an EM wavelength. The theory predicts that the configuration of the Hfield above the water depends on the direction of EM

propagation relative to the wave crests. It also predicts that for underwater measurements made a few tens

of feet below the troughs of the waves, the field varia- tions due to one- or two-foot sea waves are averaged

out; but for storm waves the phase and attenuation of the

field observed underwater varies with instantaneous

water height. These theoretical predictions have been

confirmed experimentally. 14 p. (Paper 69D2-464, p. 273).

Calculations of the bistatic scattering cross section of a sphere with an impedance boundary condition, J. R. Wait and C. M. Jackson

Extensive numerical results for electromagnetic scattering from spheres are presented in graphical form. To

simulate various types of coatings, the surface impedance

of the sphere is a specified complex function. It is shown conclusively that the forward scattering lobe is almost independent of the characteristics of the coating. On the other hand, the backscattering and side scatter- ing are profoundly modified by changes in the effective impedance of the coating. 17 p. (Paper 69D2-467, p. 299). Concept of differential reflectivity as applied to the re- flection of beam-limited radiation by a convex body;

A. Erteza, J. A. D. Doran, and H. Lenhert A method is presented for obtaining the backscattered

radiation intensity from an idealized target illuminated by

a beamwidth limited source using the concept of differ- ential reflectivity. In general, this concept provides a method for determining the fields reflected from a body

illuminated by an arbitrary source or antenna pattern when the reflection coefficients for a plane wave inci- dent on the body are known or approximated. Fresnel's

reflection coefficients are claimed to be appropriate ap- proximations for the class of convex targets character- ized by either a large radius of curvature or consisting

of lossy material. In the application of this method to the case of a large spherical body, considerable computational simplification results. Application of results to appropriate experimental data yields a minimum value of

1.53 for the average dielectric constant of the moon's

surface material. Extension of the method to statistical problems is indicated. 12 p. (Paper 69D2-468, p. 317).

Insulated and loaded loop antenna immersed in a conducting medium, R. H. Williams Previous analyses of the driving-point impedance of a small loop in an insulating radome immersed in a con- ducting medium are extended to include the effect of a permeable core loading the loop. It is shown that the

effective area of the loop is increased by a gain factor previously derived for the loaded loop in free space. The effects of the conducting medium in this factor are negligible. 3 p. (Paper 69D2-465, p. 287). Capacitance of biconical antennas in magneto-ionic

media; elliptic cone capacitance, V. P. Pyati and H.

Weil Two antenna capacitance problems are solved in this paper. The motivating problem was to determine the capacitance of a biconical antenna of circular cross section immersed in a magneto-ionic medium. This is solved

by reducing it to the secondary problem of determining

the capacitance of a biconical antenna of elliptic cross

section in an isotropic medium. The latter is solved

using the sphero-conal coordinate system. 8 p. (Paper

69D2-466, p. 291).

Propagation in nonuniform gyrotropic media, S. H. Gross

and L. B. Felsen

With the exception of the stratified layer approximation, the problem of wave propagation due to localized sources in nonuniform magneto-ionic media has received

little attention. In previous work, the coupling between

natural modes of the homogeneous gyrotropic medium has

restricted the useful range of the analysis to the slowly

varying case. In the present investigation, an E and H

mode representation is used which results in a type of coupling independent of the rate of variation in the medium, thereby permitting the study of regions with strong inhomogeneities along the gyrotropic axis. The coupling between the E and H modes now arises due to the deviation of the gyromagnetic parameter Y =

cj c /o> from zero or infinite values. The uncoupled prob- lems are therefore associated with the nongyrotropic (Y=0 or Y = oc) but nonuniform cases, and the procedure converges rapidly when Y is large or small, even for rapid spatial variations of the medium parameters. An iterative expansion is employed to deduce the gyrotropic corrections, and the procedure is phrased systematically in transmission line form. The analysis is ap- 176
plied co the evaluation of the far field radiated by an

electric current element exterior to a semi-infinite, nonuniform plasma region. 16 p. (Paper 69D3-469, p. 333). Geometrical optics for gyrotropic bodies, W. C. Y. Lee,

L. Peters, Jr., and C. H. Walter The methods of geometrical optics are extended so

that they may be applied to gyrotropic bodies. Various

internal and external reflections are considered at nonparallel planar interfaces and means of determining the ray path or direction of energy flow are derived. Nonplanar geometries may be represented by the tangent planes at the various points of incidence. A method is given for computing the phases of the various fields. These values may be used to determine the reflected

fields from such a gyrotropic body. lip. (Paper 69D3-

470, p. 349). Attenuation of hydromagnetic waves in the ionosphere,

S. I. Akasofu

Effects of the daily variation of the ionosphere on the attenuation of hydromagnetic waves are examined. The

ionosphere just before sunrise is almost transparent to the extraordinary component of the waves of frequencies between 10" 3 and 10 2 c/s, but becomes fairly opaque

during daylight hours. An intense ionization in the E

region, namely, the sporadic E, can heavily attenuate

the waves of frequencies above 10" 2 c/s. It is con- cluded that the daily, latitudinal,, and seasonal variations of the ionosphere must carefully be taken into ac- count in order to examine characteristics of the source

of geomagnetic micropulsations. 6 p. (Paper 69D3-471,

p. 361).

Self distortion of radio signals in the D region, L. R. Megill A procedure for calculating the self distortion of amplitude modulated radio waves in the D region is described. The technique includes calculation of the time dependence of the electron energy as well as the variation of the collision frequency with energy. Experimental

values for collision frequency and average fractional energy loss per collision are used. Calculations are per- formed for a number of examples using two model electron

densities. Neither dispersion nor the earth's magnetic

field are included in the calculations 7 p. (Paper

69D3-472, p. 367). Atmospheric gravity waves: A new toy for the wave

theorist, C. O. Hines

This article surveys briefly some features of atmospheric gravity waves, with the objective of bringing their characteristics and their problems to the attention of wave theorists from other disciplines. The inherent

anisotropy of their propagation, and further anisotropies and reflection processes that arise in practice, find analogs in ionospheric and other plasma propagation. They

provide a novel field for the application of old tech- niques, and they pose challenging problems that will give birth to new. 6 p. (Paper 69D3-473, p. 375).

Electromagnetic fluctuations in an equilibrium plasma,

R. E. Burgess The fluctuations in an electron-ion plasma in thermal

equilibrium are first treated for the collisionless case. Separate consideration is given to the contributions of the transverse and longitudinal modes, and two ap- proaches are used; one in terms of the energy density of the thermally excited plasma, the other in terms of the

permittivity t(K,a>) appropriate to each mode. Some of the results have complete thermodynamic generality while some are based on the statistics of the plasma.

Simple thermodynamic arguments are used to derive the

radiation resistance of short electric and magnetic di- poles in a collisionless plasma. The relation between

the spatial correlation properties of the longitudinal mode and Debye-Huckel theory is indicated. It is shown

that in a plasma with collisions the fluctuation temperature is equal to the common electron-ion temperature

for any degree of degeneracy and any velocity dependence

of relaxation time. 8 p. (Paper 69D3-474, p. 381).

Hydromagnetic wave in an inhomogeneous, cylindrical plasma, C. K. McLane and T. Tsukishima A transverse, comparatively low-frequency standing wave has been identified on the plasma column of a magnetically confined argon arc. The frequency of this wave, under some conditions, obeys a dispersion relation given by Weinstock for a generalized hydromagnetic wave in an inhomogeneous, rotating plasma. The wave

frequency, which may be higher than the ion gyrofre- quency, is closely coupled with the fluid rotation velocity of the plasma. When the differences between

these passes the ion gyro frequency, transition to another, as yet unidentified, mode takes place. 6 p. (Paper 69D3-475, p. 389). Angular dependence of the refractive index in the ionosphere, G. A. Deschamps

The dispersion properties of an anisotropic medium,

such as the ionospher.; in presence of the earth's magfield, niently represented by the varia- tions of the index with the direction of propagatioi1. It is shown thsit, for a number of cases of practical i, the variation of the index n with the angle

6 takes a special form which can be expressed by a

graphical construction; the result n is read on a circular scale, called the index circle, at the points where it is intersected by a straight line which depends in a simple manner on the direction of propagation 9. The same construction applies when the wave is evanescent and then

it gives the imaginary value of the refractive index or extinction index. The range of application of this construction includes

the Appleton-Hartree equation, its generalization for any number of ions, the hydromagnetic waves in a medium

with finite compressibility, and the various approximations corresponding to limiting or transitional cases—

Astrom waves, uniaxial media, and Booker's hydromagnetic approximation. It could also be applied to magne177
For most applications the index circle representation can take the place of the dispersion surface. The main

features of this surface—the number of sheets, whether

they are real or imaginary, and the direction of the asymptotes-are all displayed on the index circle. If the need

arises, it is easy to trace the dispersion surface and to follow its deformations as the parameters of the medium

are varied. 6 p. (Paper 69D3-476, p. 395). Electrodynamics of moving anisotropic media: The first- order theory, C. T. Tai Minkowski's theory of moving media is extended hereby

to the anisotropic case. The corresponding Maxwell- Minkowski equations have been derived under the condition that the velocity of the moving medium is small compared to the velocity of light. As an application of that theory, it is shown that the characteristics of a plane wave propagating in a drifting magneto-ionic plasma can

conveniently be determined from the constitutive parameters of the plasma without drifting. The equivalence between the convection current model adopted by Bell and Helliwell and the polarization current model sug- gested by Unz and correctly interpreted by Epstein, Bell, Smith, and Brice is also pointed out. 5 p. (Paper 69D3-

477, p. 401). Study of the phenomenon of whistler echoes, T. Laaspere,

W. C. Johnson, and J. F. Walkup

In considering the propagation of long whistlers and

whistler echo trains, the question arises about where the downcoming whistlers are reflected. The several sug- gestions that have been made include ground reflection and reflection at the lower boundary of the ionosphere.

In either case, the echo of a daytime whistler would make several more passes through the absorbing D region than the whistler itself, and we should expect whistlers occurring around noon to have a much smaller probability of having echoes than whistlers occurring at night. An

analmsis of several years of data obtained at the Dart- mouth College whistler station yields the result, however, that although the average whistler rate is much

higher at night than during the day, the probability of a whistler having an echo shows little change from midnight to midday. Consistent with this observation are the results of another study showing that the difference

in the intensity of a noontime whistler and its echo may

be only a few decibels.

If the theoretical predictions about absorption of whistler-mode waves are even nearly correct, our results on whistler echoes are incompatible with the lower- boundary or ground-reflection model. In no cases studied by us has the whistler echo been more intense than the whistler itself, and we do not at present favor the idea

that whistler echoes are amplified in the magneto sphere. A model consistent with our results is one in which a large fraction of the energy of a downcoming whistler is reflected above D-region heights. In this model a whistler may be pictured as bouncing back and forth between the ionospheres of the two opposite hemispheres, with some

of the energy "leaking through" to the ground at one or both ends of the path. Whistler observations could also be explained by a model in which the daytime transmission loss for VLF energy is high only for the first upward penetration of the ionosphere, but small once the energy is propagating in the "whistler mode." 8 p. (Paper 69D3-478, p. 407). Multiple-frequency investigations of radio wave absorption during the dawn-breakup phase of auroras, R. Parthasarathy and F. T. Berkey

Multiple-frequency and multiple station radio wave ab- sorption data from the auroral zone are used to investi- gate the electron density content in the D region during a

certain type of absorption events. The type is character- ized by smooth variability and widespread geographic

extent; the approximate electron density profiles are de- rived and discussed. The general features of the profiles were found compatible with the ionization due to the high energy electrons and the associated bremsstrahlung

x-rays. Such events are also discussed in relation to the visual auroral and magnetic records. 7 p. (Paper 69D3-

479, p. 415). Sferic excitation of a two-layer conducting medium, M.

B. Kraichman The tangential electric field at the surface of a hori- zontally stratified conducting medium of two layers is calculated for an excitation consisting of a single plane wave sferic with a slow tail. Numerical results are pre- sented for a layer of sea water with a substrate of earth with a substrate of perfect conductivity. 6 p. (Paper

69D3-480, p. 423). Currents, charges, and near fields of cylindrical antennas, R. W. P. King and T. T. Wu

The commonly made assumption that the distribution of current along a dipole antenna is sinusoidal is ex- amined critically together with the associated distribution of charge and the electromagnetic field. Measured

distributions of current and charge are compared with those assumed in the sinusoidal theory. It is shown that the distributions of charge differ so greatly that it must

be concluded that the electric field near and along the surface of the actual antenna is not well approximated by

the near field obtained with the sinusoidal assumption. A new approximate solution of the integral equation

for the current in a center-driven cylindrical antenna is obtained in terms of simple trigonometric functions. It is shown that this and the associated distribution of charge are in much better agreement with measurements

than the results obtained from the sinusoidal assumption. Approximate expressions are then derived for the elec- tromagnetic field near the antenna in a form that satis- fies the boundary conditions. 18 p. (Paper 69D3-481,

p. 429). A note on the radiation conductance of an axial slot on a

cylinder, C. M. Knop and C. T. Swift An expression is derived for the external radiation conductance of an axial slot on a cylinder using Parseval's theorem in mode space. The result is then applied

to the specific case of a thin half-wave-length axial slot and agrees identically with that obtained by J. R. Wait, using an integration of Poynting's vector over physical 178
space in the radiation zone. A brief discussion of the two methods is then given. 5p. (Paper 69D3-482,p. 447). Analytical formulas for radio paths in spherically strati- fied ionospheres, E. Woyk

Analytical solutions are developed for tracing radio rays through a spherically stratified ionospheric layer. The electron density profile is presented by a series of parabolic sections, each section being bounded by levels

of maxima or minima of electron density and by the middle values between these extremes.

With this model, relatively simple functions are obtained which give the length of the radius vector in terms

of these levels. For example, it is shown that, under

certain conditions, the ray path is a simple ellipse or a quasi-ellipse. The cases of reflection and penetration

are considered for waves originating on the earth's sur- face and for waves incident from outside the ionosphere.

5 p. (Paper 69D 3-483, p. 453).

April 1965 Dispersion of waves in a cold magnetoplasma from hydro- magnetic to whistler frequencies, H. G. Booker and

R. B. Dyce

It is shown that dispersion of waves in the magnetosphere regarded as a cold plasma may conveniently be handled from whistler frequencies down to frequencies

small compared with the ionic gyrofrequency by an ap- proximation (22) similar to the Appleto n-Hartree approxi- mation (23) used at radio frequencies. In both cases the

ratio of the ionic mass to the electronic mass is assumed

infinite, but whereas for the radio approximation this is achieved by taking the ionic mass infinite, it is achieved

for the hydromagnetic approximation by taking the electronic mass zero. This permits extension of the concept

of quasi-longitudinal and quasi-transverse approximations

to the entire frequency spectrum (fig. 2); propagation is predominantly quadi-transverse at frequencies small compared with the ionic gyrofrequency. The directional pulse patterns for radiation of a pulse from a source are calculated (fig. 11) and the transition from the omnidirectional MHD wave to the whistler mode is illustrated (fig. 13). The hydromagnetic approximation here used facili- tates detailed calculation of elliptical polarization (figs. 14-19) and space-charge (fig. 20). Attenuation due to ionic collisions with neutral gas is calculated (fig. 21) on the assumption that the neutral gas is too massive to take part in the wave motion. 30 p. (Paper 69D4-484,

p. 463). Study on the guiding mechanism of whistler radio waves,

S. Adachi A full wave theory is applied to the whistler radio wave propagation along a plasma slab with an enhanced

or depressed plasma density which is imbedded in an

infinite magnetoplasma. Rigorous dispersion equation is solved for a thin slab in approximate but explicit forms. Three types of propagation modes are found: (a) a completely trapped surface wave mode along the depressed

slab in the frequency region above a half of gyrofrequency and below a gyrofrequency, (b) a completely trapped sur-179

face wave mode along the highly enhanced slab in the frequency region above a half of gyrofrequency and below

a certain cutoff frequency less than a gyrofrequency, and

(c) a partially trapped (leaky) surface wave mode along

the enhanced slab in the frequency region above a cer- tain cutoff frequency and below a half of gyrofrequency. Dispersion properties, field distributions and an attenu- ation of the third mode due to the leakage of the trans- mitted power are discussed in detail. The attenuation is found to increase very rapidly with increasing frequency, thickness and enhancement of ionization of the slab. The exact numerical solutions are also obtained and com- pared with the approximate solutions. 10 p. (Paper 69D4-485, p. 493). Electromagnetic waves along an infinitely long and thin conducting wire in a magneto-ionic medium, Y. Mushiake

Electromagnetic fields of an infinitely long conducting

cylinder in a magneto-ionic medium with axial static magnetic field are theoretically analyzed. Expressions

of the electromagnetic fields and the dispersion formulas

are obtained. Explicit approximate expressions of the

relative propagation constants for the case of an ex- tremely thin wire are derived and their dependence on the plasma and the cyclotron frequencies is discussed. The

behavior of the electromagnetic fields around the wire is also discussed. 8 p. (Paper 69D4-486, p. 503). Use of the phase-integral method to determine the reflection properties of a stratified ionosphere, C. Altman A Pegasus computer has been programmed to give the absorption coefficients and virtual heights at vertical in- cidence for the main magneto-ionic components reflected from a stratified ionosphere, using the phase integral method. Typical absorption and virtual height curves are given for daytime ionospheric models. For high geomagnetic latitudes the Z-trace is shown to be one of the two

least attenuated traces for daytime E-layer reflections at frequencies both above and below the gyrofrequency, and

it is shown that under certain circumstances the Z-trace may appear at a lower virtual height than the O-trace. The limitations of the usual ray method which uses the group refractive index for determining virtual heights are discussed, and it is shown that a simple correction term may be added to the ray theory calculation of virtual heights to make it agree with the phase integral determination. 9 p. (Paper 69D4-487, p. 511). E-Mode propagation in a plane-stratified plasma, P. Hirsch and J. Shmoys

The problem of propagation of plane electromagnetic waves polarized in the plane of incidence in a planestratified isotropic plasma (regarded as a dielectric) is dealt with by reducing it to the solution of an ordinary

differential equation (which is singular at the level of plasma resonance. The absorption of power in the reso- nant layer is calculated approximately in two cases in- volving a linear profile. In the first the relative dielectric constant varies linearly in a thin transition layer between two homogeneous regions. In the second, the

dielectric constant is linearly varying over a large inter- val. 7 p. (Paper 69D4-488, p. 521).
Radiation from an infinite axial slot on a circular cylinder clad with magnetoplasma, P. de Marchin and G. Tyras

This paper is concerned with the investigation of the

effects of a magnetoplasma layer on the radiation properties of an infinite axial slot on a circular cylinder when

a finite magneto static field is in the axial direction. Formulas have been obtained for the fields everywhere

around the cylinder and for any thickness of the magnetoplasma. The solution is simplified by a first order ap- proximation, valid only for small thicknesses of the

layer. For a small "k

Q a" the harmonic series converges

well and is used for numerical computations. For large "k

Q a" the convergence is improved by applying the Watson's transformation. Distortion, attenuation, and asymmetry of the radiation pattern are shown as a function of the strength of the magnetostatic field. It is found

that the reversal of the orientation of the magnetostatic

field produces a shift of the pattern to a mirror-image

position. 10 p. (Paper 69D4-489, p. 529). Index of refraction surfaces for plasma

and M. H. Cohen

T. Yeh

Surfaces of index of refraction have been calculated

for the four modes which exist in a warm plasma, ignor- ing all damping mechanisms. The surfaces are displayed

profile cuts through the surfaces. 19 p. (Paper 69D4-

490, p. 539). Impedance of a short dipole

K. G. Balmain

;sible pla

The field of a cylindrical dipole antenna in a compressible, isotropic, lossy plasma is represented by the

field of a cylindrical current sheet immersed in the plasma. The antenna is short compared to a free space

wavelength and for this reason a triangular current dis- tribution is assumed. A formula for the input impedance

is derived and compared with existing formulas for spherical, cylindrical and planar geometries. In addition, the

effect of contact between the plasma and a metal antenna

is estimated in the low frequency limit for the case of an antenna biased to the point of ion sheath collapse. 8 p. (Paper 69D4-491, p. 559). Waves circulating a compressible pla;

l'id cylindrical obstacle

. R. Wai Propagation of waves in a compressible plasma, bounded by a rigid convex surface, is considered in this paper. The situation is idealized to the extent that Maxwell's equations, when combined with continuum theory

of fluid dynamics, are separable. Specifically, the model

is a perfectly conducting cylinder of infinite length which

is excited by a uniform voltage applied to an axial slot.

It is shown that both electromagnetic and electroacoustic waves are excited in the plasma. Of particular interest

is an azimuthal surface wave which circulates around the cylinder with exceptionally low attenuation. In the limit- ing case of a cold (incompressible) plasma, the surface wave is not excited. 11 p. (Paper 69D4-492, p. 567).

Wave propagation in a two component warm plasma, S. R. Seshadri A treatment of the characteristics of a plane wave

propagating in a homogeneous, unbounded, and fully ion- ized plasma is given by employing the linearized, twofluid continuum theory of plasma dymanics. The plasma

is assumed to be a macroscopically neutral and loss-free mixture of gas of electrons and singly charged ions. The

dispersion relations for the general case of propagation

at an arbitrary angle to the direction of the static magnetic field are investigated without any limitation on the frequency and with emphasis on the coupling of the transverse and the longitudinal type waves. Simple analytical expressions for the dispersion relations in the various intervals of frequency and phase velocity, as

well as for the frequencies where the transverse and the longitudinal type waves couple, are given in terms of the various parameters. This treatment does not cover the cases in which the propagation vector is in the close neighborhood of either the direction of the static magnetic field or that perpendicular to it. 19 p. (Paper 69D4-493, p. 579). Harmonic currents excited by ai la plasma, L. Wetzel and T. W. Tang

This paper reviews the major sources of harmonic cur- rents excited by an electromagnetic wave in an iostropic plasma. The discussion is based on the assumption that a plane wave of prescribed form interacts with a plasma whose response is described by the usual macroscopic

equations for the electron velocity, density and temperature. Nonlinear interactions arising from (i) the magnetic

field of the plane wave, (ii) the dependence of the col- lision frequency and other rate parameters on the electron temperature, and (iii) the oscillating space-charge in- duced by the wave in regions of inhomogeneity, are ex- amined in sufficient detail to provide an estimate of their relative imporatnce in producing harmonic -currents in various situations. The physical origins of these cur- rents are discussed and a characteristic perturbation parameter provided for each of the interactions. 9 p. (Paper 69D4-494, p. 599). of a is, W. A. Saxton This paper reports early results in an experimental study to determine the effects of perturbing weaklyionized gaseous plasmas with acoustic waves emanating

from transducers that operate in the audio and ultrasonic frequency ranges. Compact loudspeakers incorporated

into cylindrical plasma discharge tubes provide the source of acoustic signals. Modulation of electromagnetic waves by the acoustically-disturbed plasma is measured in a unique rectangular cavity whose output is detected and fed to a wave analyzer. Resultant waveanalyzer responses indicate that the collision frequency

is modulated in addition to the plasma frequency, and

suggest that the variations in both are proportional to the magnitude of loudspeaker diaphragm deflection, as pre- dicted by simple acoustic theory. Knowing that two

forms of modulation occur simultaneously, a calibration scheme was developed to separate the variation A/^ in the plasma frequency from the total response. Measure- 180
ments to date indicate that ANg /N e = AN/N (where N g and V are electron and neutral-molecule densities, re- spectively) for slightly-ionized gaxes which are sub- jected to low-frequency pressure variation in the order of

10 -5 mm Hg, and that such variations produce plasmafrequency perturbations of 0 - 140 kc/s at plasma fre- quencies up to 800 Mc/s. 8 p. (Paper 69D4-495, p. 609).

Electron cyclotron resonance absorption of microwaves

in decaying oxygen magnetoplasmas is utilized to alter the plasma parameters such as the "temperature" and number density of the electrons. The technique of cross modulation of microwaves in partially filled plasma waveguides is used in this investigation. It is shown that for small amplitudes (-120 mW at 5.3 Gc/s) of the resonant

heating signal the inelastic collision of low energy elec- trons introduce a barrier for rapid heating the electron

gas. For higher incident amplitudes (-500 mW at 5.3 Gc/s), not only does rapid heating of the electron gas

occur, but also additional electron production and loss mechanisms are observed. The implications of these re- sults on (a) apparent discrepancies in measurements of attachment coefficient by microwave methods, and (b) control of ionospheric plasma parameters by radio wave

absorption are discussed. 6 p. (Paper 69D4-496, p. 617).

fest of the constancy of the velocity of electromagnetic

radiation in high vacuum, P. Beckmann and P. Mandics

It is pointed out that Einstein's postulate of the constant velocity of light is verified only indirectly by

elementary-particle experiments leaning more or less heavily on present electromagnetic theory, the latter being varified only for low velocities. Direct experi- ments can be explained by the ballistic theory of light if transparent media, such as gases, reradiate as a secondary source. A direct experiment with coherent light re- flected from a moving mirror was performed in vacuum

better than 10 -6

torr. Its result is consistent with the constant velocity of light. 6 p. (P aper 69D4-497, p. 623). Signal degei

turbulent atmosphei

3 propagated through i The statistical distributions of the angle of arrival, the spot location, the cross section, the amplitude, the carrier phase and the modulation phase of a laser beam

traversing an anisotropically turbulent atmosphere are derived in terms of the space correlation function of the atmospheric index of refraction and the windspeed. The

limitations imposed by the turbulent atmosphere and the loss of coherence on the depth and bandwidth of the modulation, on the length of the path and on the aperture of the receiving apparatus are analyzed. Experiments to obtain numerical parameters and to check functional de- pendencies are proposed. 12 p. (Paper 69D4-498, p. 629). High frequency backscatter from the earth measured at 1000 Km altitude, R. C. Chia, A. K. Fung, and R. K. Moore Radar type backscatter from the ground to the Alouette

satellite has been observed in the 9 megacycle frequency

range. These are the first observations of the earth by

radar from satellite altitudes. Observations of effective reflection coefficients from

the 1000 km altitude of the Alouette satellite have been made for 12 examples over the southern hemisphere, at frequencies in the order of 9 Mc/s. The absolute calculated ground effective reflection coefficient ranges from -24.1 dB for the forest to -5.4 dB for the sea. Relative values (ratio of ground to ionosphere effective reflection coefficients) range from 0.10 for the forest to 0.53 for the

sea. Estimated variability of the data is +3.6 dB. It is possible that the ground reflection coefficients are some- what smaller than the correct value because attenuation

in the ionosphere at 9 Mc/s has been neglected, and methods to correct for this are being studied. 9 p. (Paper 69D4-499, p. 641).

)bservation of NPG VLF I fornia during path equino Whitson

ansmissions at Tracy, Cali-

, G. B. Carpenter and A. L.

Phase and amplitude of five NPG wavefront components

were recorded at Tracy, California in March 1964 at a time when the sunrise and sunset lines were almost par- ailed with the propagation path. Large rapid phase and

amplitude variations were associated with sunrise; and

at sunset, exactly one full cycle of phase was accumulated on 18 of 20 days of recording. Summation calcula- tions based on simplified ray theory were able to explain,

at least qualitatively, most of the gross features of the

data. However, phase accumulation on this particular path seems to require an ionospheric model in which

partical reflections can be received simultaneously from two heights during the illumination transition. 7 p. (Paper 69D4-500, p. 651).

Small magnetic toroid antenna imbedded in a highly c ducting half space, G. R. Swain

The antenna considered consists of a small toroidal core of magnetic material, upon which a uniformly dis- tributed driving winding is placed. Thin layers of insulation separate the winding from the core and from the highly conducting medium in which the antenna is situ- ated. The external fields for the driven antenna are estimated using a static field solution employing toroidal coordinates. The driving-point admittance is then de- termined from these fields. The effective electric cur- rent moment of the antenna is estimated by duality with

the electric current loop. The driving-point admittance and the effective moment are then combined to estimate

the effective length and the relative effective area of a toroid antenna oriented such that the electric moment

produced is parallel to the surface of the conducting half space. While the effective length of a tuned toroid an- tenna can be made much greater than the effective length

of an electric-dipole-in-radome antenna, the effective areas of the two antenna types are of the same order of magnitude if the maximum exterior dimensions are equal.

7 p. (Paper 69D4-501, p. 659). 181
May 1965 On electromagnetic radiation from a magnetic dipole with

arbitrary orientation embedded in a lossless magnetoionic medium, H. Motz The methods of an earlier paper for calculating the radiation from an electric dipole are extended to the case

of a magnetic dipole, and numerical data concerning the radiation admittance of such a dipole embedded in an

infinite magneto-ionic medium are given. 9 p. (Paper 69D5-502, p. 671). A systematic study of the radiation patterns of a dipole

in a magnetoplasma based on a classification of the associated dispersion surfaces, R. Mittra and G. L. Duff This study commences by demonstrating the important

role played by the dispersion surfaces in the determination of the far fields of an infinitesimal dipole in a lossless, cold magneto-ionic medium. The dispersion sur- faces are then classified, according to their shapes, for different ranges of the plasma parameters. A comprehensive group of radiation patterns is then given including

far fields for each of the fourteen classified ranges of the plasma parameters. 12 p. (Paper 69D5-503, p. 681). Propagation of vertically polarized electromagnetic waves in a horizontally stratified magnetoplasma, R. Burman and R. N. Gould When studying the propagation of VLF and ELF radio waves, Galejs and Row [ 1964] and Galejs [1964] took the ionosphere to be a planar stratified magnetoplasma medium. A wave equation was derived which describes the propagation of vertically polarized waves along the magnetic equator. It was shown that the wave equation

could be solved exactly in closed form for a particular height variation of the elements of the permittivity tensor

in the ionosphere. The purpose of the present paper is to give a method of treating the wave equation which

enables other exact closed-form solutions to be obtained.

8 p. (Paper 69D5-504, p. 693). A note concerning the reflection of waves in inhomoge- neous layers with asymmetric profiles, R. Burman

Approximate formulas for reflection coefficients have

previously been used to study the reflection of waves in inhomogeneous layers having symmetric profiles of the

refractive index or its gradient [Heading, 1963; Wait and

Jackson, 1964; Burman, 1965]. In the present note the extension of this work to the case of asymmetric profiles

is considered. 3 p. (Paper 69D5-505, p. 701).

On the terrestrial propagation of ELF and VLF waves in the presence of a radial magnetic field, J. Galejs The continuously changing ionosphere profile is ap- proximated by a series of homogeneous layers, and the

radial field variation in the individual layers is obtained by s *ving a fourth order equation. Its biquadratic solu- tions are adequate only in regions where TE and TM

modes are coupled, but more accurate solutions are re- quired in lower layers of the ionosphere. The field components below the ionosphere are computed after multi- plying a sequence of 4 x 4 matrices, each of which

represents the effects of one of the ionosphere layers. However, simpler multiplications can be used for heights above the D layer. After computing the impedance matrix

at the lower boundary of the ionosphere, the propagation parameters are computed with neglected coupling between TE and TM waves below the ionosphere. The radial magnetic field has the most pronounced

effects at nighttime in the lower end of ELF range, where it increases the attenuation significantly, and also

in the VLF range, where it decreases the attenuation. At daytime the presence of the radial magnetic field has

only minor effects on wave propagation. 16 p. (Paper 69D5-506, p. 705). Electron density profiles in cylindrical plasmas from

Electron density profiles in the afterglow of a stabi- lized linear pinch have been measured using the refrac- tive properties of the plasma column. The deflection angle of a microwave beam refracted by the discharge is observed as a function of beam position. The resulting data lead to an integral equation for the electron density

distribution, which is reducible to the Abel integral equation. The electron density is derived from the experi- mental data by inverting this last equation. The method has been checked using direct transmission and interferometric measurements. 7 p. (Paper 69D5-

507, p. 721). A study of the waves supported by a warm plasma slab, P. R. Caron The waves supported by a warm plasma slab are in- vestigated. The transverse resonance equation describ- ing the modes on the slab is obtained and, for certain ranges of plasma frequency, excitation frequency and plasma temperature, it is shown to be convenient to find the roots of this equation by the intersection of two loci. Using these loci the surface waves and leaky waves sup- ported by the slab are described. 5 p. (Paper 69D5-

508, p. 729).

Transmission and reflection of electromagnetic waves by

a hot plasma, E. C. Taylor The relativistic form of the Vlasov equation is used to solve the problem of transmission and reflection of nor- mally incident electromagnetic waves. Transmission and

reflection coefficients are derived for a plasma half- space and for a plasma slab, using the assumption that electrons are specularly reflected at the boundaries. These coefficients are functions of the ratio of the electron thermal speed to the vacuum speed of light, indicating that temperature dependence in these cases is a relativistic effect. Nevertheless, it is seen that the nonrelativistic limits of these coefficients differ from those obtained by using the cold-plasma equations since the

transition to the zero-temperature limit has a nonuniform

character. 5 p. (Paper 69D5-509, p. 735). 182
Radiation from electrons in magnetoplasma, H. B. Liemohn

The radiation from an electron in a homogeneous mag- netoplasma has some unusual properties as a conse- quenceof the dispersive anisotropic nature of themedium.

Attention is confined to emission in the ordinary (whistler) mode frequency band below the cyclotron resonance

and the extraordinary mode frequency band around the plasma frequency where the indices of refraction are ap- preciably greater than one and vary significantly. Due to the large indices, electrons can emit Cerenkov radiation over a limited band of nonrelativistic energies. The

cyclotron radiation which is generated by the gyrations

of electrons is complicated also by this property of the medium which permits both normal emission due to "slower than light" motion and anomalous emission due

to "faster than light" motion. In the ordinary mode, for example, the anomalous cyclotron radiation is emitted

into the forward hemisphere with respect to the guiding

center motion of the electron whereas the normal radiation

is emitted into the backward hemisphere. In this paper

the frequency spectra and angular patterns of the average

radiated power are calculated by the Hamiltonian method

which avoids a direct calculation of the complicated

electromagnetic field vectors. The theory of emission in dispersive anisotropic media with a hermitian dielectric tensor by Kolomenskii and Eidman is thoroughly re- viewed and extended to include relativistic energies; the complicated analytic formulas for the powerare evaluated

for several special cases; and the results are applied to recent interpretations of very low-frequency (VLF) and

low-frequency (LF) emissions from electrons in the magneto sphere. The main conclusions of the work are as

follows: (11 In the ordinary (whistler) mode most of the energy is radiated along wave normals at large angles to the magnetic field at frequencies other than the rectilinearly Doppler-shifted fundamental cyclotron harmonic which is contrary to assumptions of certain VLF emission

theories. (2) The resonance singularities in the indices

for a cold, collisionless plasma must be eliminated to achieve finite power levels, but unfortunately the dielectric tensor for thermal motion is extremely complex and

for collisions is non-hermitian; consequently, an arbitrary upper limit is imposed on the indices in order to make a quantitative estimate of the power. (3) Based on this approximation the total power in the ordinary mode is a slowly varying function of frequency and electron energy

with an average level of 10 -30 W/(c/s) per electron.

(4) This level is inadequate to explain observed VLF

signals on the basis of incoherent emission, but coherent emission from bunches of electrons can give the observed power level of 10~ 14 W/cm 2 (c/s) above the ionosphere; hence, the onus of explaining the complex dispersion

patterns of VLF emissions is left to the coherence mechanism. (5) The radiation in the extraordinary mode varies considerably with frequency and energy but an average power level is on the order of lO" 25 W/(c/s) per electron which still requires some coherence to generate the ob- served level above the ionosphere; however, this energy cannot penetrate the ionosphere to account for the dis- persion observed by ground-based receivers. 26 p. (Paper 69D5-510, p. 741).

Radiation from a uniformly moving charge in an anisotropic, two component plasma, S. R. Seshadri and H.

S. Tuan The effect of motion of heavy ions on the radiation characteristics of a point charge moving with uniform

velocity along the direction of the external magnetic

field in a plasma is investigated. For the case of sta- tionary ions, two modes are found to be excited up to zero frequencies for values of the normalized strength of

the esternal magnetic field above a certain minimum

value. The result of inclusion of the motion of heavy

ions is that the ordinary mode has a resonance at the so- called lower hybrid resonant frequency below which it is not excited and the extraordinary mode is excited up to zero frequencies even for very small values of the nor- malized strength of the external magnetic field. The

power radiated in the ordinary mode in the neighborhood

of the lower as well as the upper hybrid resonant fre- quencies is relatively large. The frequency and the angular spectrum of the emitted radiation as well as the direction of the Cerenkov rays are evaluated for some

typical parameter values which include those usually ob- tained in the exosphere. 17 p. (Paper 69D5-511, P- 767).

June 1965 Cyclotron harmonic waves in warm plasmas, F. W. Crawford

It has been predicted theoretically that cyclotron har- mony waves should propagate in warm plasma confined by a magnetic field, and show cutoff and resonance be- havior associated with harmonics of the cyclotron fre- quency and the upper hybrid resonance frequency. In this paper, a simplified analysis based on the quasistatic approximation is presented and used to establish

the relevant dispersion relations. Computer solutions of these are presented showing the influence of the magnetic field and discharge parameters on the propagation. A number of recent experimental results can be explained

in terms of this type of wave motion and serve to establish its validity. This work is discussed briefly. The

paper discusses some of the implications of this mode in laboratory and ionospheric plasma physics. 17 p. (Paper 69D6-512, p. 789). Propagation of waves across a magnetoplasma-vacuum

boundary, R. L. Gallawa The coupling of electroacoustic and electromagnetic energy at a magnetoplasma-vacuum boundary is studied

via the plane wave solution of Maxwell's equations. The

effect of the static magnetic field is illustrated graphically. It is found that the coupling depends signifi- cantly on the angles, increased coupling being in favor

of the grazing angles of transmission. The electron density of the plasma is seen to be an important parameter

in most cases. 11 p. (Paper 69D6-513, p. 807). Phase velocities and attenuation distances in the iono- sphere, D. R. Croley, Jr. and B. S. Tanenbaum

Plane wave phase velocities and attenuation dis- tances in an infinite, homogeneous, partly ionized gas 183
composed of an interacting mixture of neutral molecules,

ions, and electrons in the presence of a uniform magnetic

field are determined for three sets of plasma conditions corresponding to the 80, 100, and 300 km levels of the ionosphere. Propagation in the parallel direction and the perpendicular direction relative to the magnetic field in the frequency range from approximately 10~ 5 Hz to 109 Hz is considered. 7 p. (Paper 69D6-514, p. 819). Ionospheric effects of electrostatic fields generated in the outer magnetosphere, G. C. Reid The conduction of electrostatic fields from the outer magnetosphere to the ionosphere via the geomagnetic

field lines is studied in a quantitative fashion. It is as- sumed that any arbitrary pattern of turbulent fields in the magnetosphere can be analyzed into Fourier components, and the transfer of components whose wavelength lies between 0.1 km and 1000 km (as measured in the iono- sphere) is examined. It is concluded that components of wavelength less than about 1 km will be severely atten- uated before reaching the F region, whereas components

with wavelength greater than about 10 km will be only

slightly attenuated. The application of these results to the theory of the origin of ionospheric irregularities is discussed. The transfer of these electrostatic fields must necessarily be accompanied by the appearance of weak electrostatic fields along the direction of the magnetic field. The size of these fields is estimated, and their possible

effect on the acceleration of electrons is discussed. 11

p. (Paper 69D6-515, p. 827). An experimental study of plasma sheath effects on antennas, G. Tyras, P. C. Bargeliotes, J. M. Hamm, and R. R. Schell A plasma simulation technique has been developed which can be used to study the effects of homogeneous

plasma sheath on the radiation pattern deterioration and

input impedance of microwave antennas. A tank has been designed and constructed for use in the simulation technique which can reproduce by means of real dielectric materials the dielectric constant encountered in plasma covered antenna research. The radiation patterns and the input impedances of an

annular slot and a thin and long rectangular slot have been successfully measured in the presence of a simulated lossless, homogeneous, and isotropic plasma layer

of varied thickness. Comparison with the available the- oretical data indicates a generally good agreement, al- though some differences exist. In the case of the radiation patterns these differences are attributed to the finite distance between the radiator and the receiving antenna

on one hand and the inherent inaccuracy of the saddle

point method of integration in certain regions on the other hand. 12 p. (Paper 69D6-516, p. 839). An approach to improve re-entry communications by suit- able orientations of antenna and static magnetic field,

S. N. Sam add ar In this paper analysis of two radiation problems which have practical application to improve radio communications during re-entry blackout period is presented. In

both of these examples given here, the mutual orientation

of the antenna and external static magnetic field is chosen in such a way that the field components are in- dependent of the component of the plasma-dielectric tensor parallel to the static magnetic field. This choice enables one to control more effectively the electromagnetic waves by controlling the applied d-c magnetic

field. Though the problems investigated here involved cylin- drical body of infinite length, a knowledge of these re- sults will throw more insight into the expected behavior

of the radiation field from a uniform magnetic ring current around a conical space vehicle covered by a plasma

sheath in the presence of a uniform azimuthal static magnetic field. 13 p. (Paper 69D6-517, p. 851). Concerning the mechanism of reflection of electromagnetic waves from an inhomogeneous lossy plasma, J. R. Wait Reflection of electromagnetic waves from a stratified lossy inhomogeneous plasma is discussed. The profile

for the conductivity is idealized as an exponential curve

with a superimposed Gaussian-shaped perturbation. By

examining the change in the calculated reflection coeffi- cient for various locations of the perturbation, some in- sight into the reflection process is gained. In particular,

it is shown that reflection does not take place at a single

level but, instead, a wide range of levels is important. The parameters of the problem are chosen to be repre- sentative of the D layer of the ionosphere and the wavelengths cover the range 10 km to 30 km. 5 p. (Paper 69D6-518, p. 865). Angels in focus, D. Atlas Recent independent observations of "dot" angel echoes are drawn together to provide a coherent picture

of their physical structure. The angels act as point tar- gets with durations proportional to beam width (for verti- cally pointing radars). The echoes are strongly coherent,

indicating a smooth specular-like surface. Dual fre- quency measurements in the band 1 to 3 cm indicate that

their radar cross sections are proportional to between the

first and second power of wavelength. A range square dependence is also indicated. When tracked, the cross

sections show strong enhancement at the zenith, de- creasing roughly symmetrically on either side. Doppler measurements indicate that they almost always ascend

with speeds of about 1 m sec -1

. The observations are shown to be consistent with specular reflections from the hemispherical, concave- downward cap of a rising thermal or convective bubble. The specular point of the cap appears only briefly in a

vertically pointing beam and so the echo appears to be

from a point source. The concave-downward surface pro- vides at least partial focusing, thus accounting for both

the magnitude of the cross sections and their range- square dependence as the bubble expands with altitude. Furthermore, only rising bubbles have such favorably disposed upper surfaces. The dual frequency data indi- cate that the transition zone across the bubble cap is extremely sharp, of the order of 0.5 cm. The sharp transition, the smoothness of the cap, and the slow ascent

rates suggest that the flow is laminar. 5 p. (Paper 69D6-519, p. 871). 184
An investigation of clear air stratification with radar and

elevated instruments, D. R. Hay and K. Naito A study of radar reflections within the clear air of the lower troposphere has been carried out over two pro- longed intervals. A specially designed radar operating

at 7000 MHz has been used for this purpose, with its stationary antennas directed vertically into the layer of

frictional influence. An interpretation of these radar ob- servations has been made with the aid of synoptic weather

information, to indicate that the incidence of reflections varies with the type of air mass and with the degree of dampness of the underlying ground. The distribution of reflecting centers generally has a maximum at a height

of 300 m, but this distribution is altered by the intrusion

of a weather front. These reflecting centers appear to be

small departures in air refractivity within horizontal

layers that are only a few centimeters in vertical depth and that are either flat or weakly concave downwards,

extending over horizontal distances of at least a few

meters. The need for further information on the air structure to support these radar observations has led to a pro- gram of special instrument development. Included are a balloon-borne refractometer and temperature sonde which

have a rapid response and a high degree of spatial resolution, and a smoke-generating nose cone for low level

rockets. Preliminary observations have been carried out

with these instruments to assess their capabilities, and some details on the smoke trail analysis are given in this paper. Inspection of the smoke trails indicates lo- calized layers of turbulence and rapid diffusion within deeper layers of laminar translation. It appears that averaging times in excess of 20 min are required to obtain some mean wind-speed profiles. The vertical extent

of velocity inhomogeneities is not small as compared

with their horizontal extent, and the law of diffusion generally is different at levels above and below 300 m. 4 p. (Paper 69D6-520, p. 877). On inferring the refractive-index structure of the tropo- sphere from electromagnetic scattering experiments,

P. L. Smith, Jr. Determining the refractive-index structure associated

with the scattering of electromagnetic wave by the troposphere is a problem of considerable interest. This

paper emphasizes the fact that the refractive-index profile cannot be inferred from scattering measurements at only one wavelength and one scattering angle. Such measurements determine only the spatial Fourier spec- trum of the refractive index, at a particular wave number

determined by the wavelength and the scattering angle. This point is illustrated by a set of hypothetical

refractive-index profiles that cannot be distinguished by measurements at one wavelength and one scattering

angle. Methods of obtaining further information about

the atmospheric refractive-index structure are reviewed

briefly. The suggestion is made that measuring the cross

sections of radar angels as a function of the pulse length would provide useful information. 4 p. (Paper 69D6-

521, p. 881). The biexponential nature of tropospheric gaseous absorption of radio waves, E. J. Dutton and B. R. Bean

This paper discusses the characteristics, and some of the statistics of the general climatological aspects of

considering atmospheric oxygen and water vapor absorption (the two principal contributors to atmospheric gase- ous absorption in the 6 to 45 Gc/s frequency range) to be

decreasing exponential functions of height from their sur- face value. The paper is intended primarily as an ex- amination of these climatological aspects and the maps

included are not primarily intended for application. The

dry (oxygen) term of this biexponential model is ex- tremely well behaved, but the wet (water vapor) term de- pends on time of year, geographic location, air mass, and

general climatology of the areas for which application is intended. Gaseous absorption of radio energy in the 6 to 45 Gc/s frequency range arises principally from water vapor and oxygen. The combined absorption may be represented by a biexponential decrease from the surface values. The oxygen absorption is well described by the model, as

is water vapor absorption except in regions of very low

water vapor content. 8 p. (Paper 69D6-522, p. 885). Complete scattering parameters of polydispersed hydro- meteors in the AO. 1 to A10 cm range, D. Deirmendjian The extinction, the albedo of single scattering, the

differential scattering cross section, and the complete

polarization properties, per unit volume of cloud and rain elements, irradiated by microwave radiation at various frequencies have been determined. Continuous drop-size

distribution functions are introduced to represent real clouds and precipitation, and the absorption and scatter- ing parameters are integrated with high accuracy. A Rayleigh approximation is found adequate for the cloud

model, but the complete mie expressions had to be used

for precipitation-sized particles. Older estimates have been corroborated, but some new features have been

brought out for the first time, such as the scattering in- tensity and polarization (including its ellipticity) as a function of scattering angle. The quantitative results, presented graphically and in extensive tables included in the original study (available as RAND publication R-422-PR, 1963), will be useful in advancing cloud physics research by means of active and passive microwave techniques. The same results can be used in the theoretical interpretation of the observed

continuous and discrete microwave emissions from cer- tain planets. 5 p. (Paper 69D6-523, p. 893).

July 1965 International comparison of atomic frequency standards

via VLF radio signals, A. H. Morgan, E. L. Crow, and

B. E. Blair A study was made of data obtained over an 18-month

period (July 1961 to December 1962, inclusive) on the comparison of atomic frequency standards located in seven laboratories in the United States, Europe, and Canada, using the VLF signals of GBR (16 kc/s), Rugby,

England, and NBA (18kc/s), Balboa, Canal Zone. Each

laboratory observes the accumulated difference in phase

over a 24-hr period (the same for all laboratories, or nearly so) between its own standard (either laboratory or commercially constructed) and thd received VLF signal. A statistical analysis was designed to separate the ob- servations at each laboratory into three components: (a) 185
long-term mean differences among the atomic standards;

(b) estimates of the standard deviations, a., at each re- ceiving station; and (c) estimates of the transmitter standard deviations, t. Each a. includes receiver fluctu- ations, propagation effects perculiar to the path, and measurement uncertainties- f includes the transmitter fluctuations and propagation effects common to all paths. The study shows that a. at each receiver varied from a low of 0.39 x 10 -10 units of fractional frequency (that

is, 0.39 parts in 10 10

) (GBR data) at LSRH to a high of

1.97 x 10" 10 (GBR data) at NRC with an average for all stations of 1.01 x 10" 10 measured against GBR and 0.99

x 10~ 10 when measured against NBA. Also, the average

r for GBR is 1.26 x 10" 10 and for NBA is 0.68 x 10" 10

. Finally, it is shown that: (1) the means of the fre- quencies of the seven individual laboratories agreed with

the grand mean of these seven laboratories to within ±2

parts in 10 10 for the 18-month period, and (2) the labora- tory-type standards agreed with their grand mean to within ±1 part in 10 10

. 10 p. (Paper 69D7-524, p. 605). Control of WWV and WWVH standard frequency broadcasts

by VLF and LF signals, B. E. Blair and A. H. Morgan

Since 1961 the NBS VLF and LF signals have im- proved the calibration and frequency control of the WWV

(Maryland) HF broadcasts. Similarly, better control of the WWVH (Hawaii) HF broadcasts was achieved in early 1963 by monitoring the NBS VLF broadcasts in terms of the WWVH control oscillator. In mid 1963 WWVL (20 kc/s) and WWVB (60 kc/s) were relocated from two sites near Boulder, Colo., to a single site near Ft. Collins,

Colo., and the transmitter power for both broadcasts was

increased several fold. These higher powered broad- casts resulted in more precise control of both HF broadcasts. Through the VLF and LF signals the 24-hr aver- age frequency values of WWV are related to the United

States Frequency Standard (USFS) within a few parts

in 10".

This paper describes the NBS low-frequency broadcasts, the method of using them to control and calibrate the HF broadcasts, and gives an analysis of the preci- sion of frequency control obtained at WWV over a 21- month period. An appendix discusses the short-term phase stabilities and diurnal phase shifts observed in the low-frequency signals at WWV and WWVH, and examines

the accuracy-limiting effects of propagation path characteristics and background noise levels in such received

signals. 14 p. (Paper 69D7-525, p. 915). Measurements of the total electron content and the equi- valent slab thickness of the midlatitude ionosphere,

R. V. Bhonsle, Aldo V. da Rosa, and O. K. Garriott The total electron content N

T

and the equivalent slab thickness r of the midlatitude ionosphere are determined

from differential Doppler measurements on the radio transmissions from the Transit 4A satellite and the ion- o sonde data near Washington, D.C. , and Ottawa. The

trends of diurnal, seasonal, and sunspot cycle variations

of /V r

and r at midday are described. It is found that in 1962 both N T and r were considerably decreased in magnitude as compared to the corresponding values near the peak of the sunspot cycle. The inferred mean electronion temperature is found to be generally in excess of the neutral temperature. The ratio T /T in the daytime is estimated to be 1.8 in summer and about 1.1 to 1.2 in winter, which may reflect corresponding changes in the

ratio Q/N 2

g

, where Q is the heat input to the electrons and N is the electron density. The relationship be- tween t and K appears to be rather ambiguous in contrast with the positive correlation between the neutral gas temperature and K

p

. 9 p. (Paper 69D7-526, p. 929). D-Region absorption at 10 and 15 Mc/s during the total solar eclipse of July 20, 1963, G. M. Lerfald, J. K. Hargreaves, and J. M. Watts Riometer observations of ionospheric absorption at 10

15 Mc/s in both the ordinary and extraordinary modes

were conducted in Alaska during the eclipse of July 20, 1963. The equipment was located so that the path of

totality at 70 km height was directly overhead, and con- siderable reduction was detected from the ambient day- time absorption, which fell to some 40 percent of its nor- The behavior of the D region during an eclipse is con- sidered theoretically, and the observations are analyzed

in terms of this treatment. It is shown that the observations can be explained in terms of ionospheric parameters

which, with one exception, accord with values given by

other methods. The use of future eclipses in D-region

studies is briefly discussed. 8 p. (Paper 69D7-527,

p. .939). Effect of the eclipse of 20 July 1963 on VLF signals propagating over short paths, J. H. Crary and D. E. Scheible Measurements were made at Hanover, N.H., of the ef- fect of the solar eclipse of 20 July 1963 on the phase

and amplitude of two VLF signals propagated over rela- tively short paths. The skywave signal from NAA, Cutler, Maine, (14.7 kc/s) was reflected once from the D

region at a point of total optical obscuration. The sky- wave signal from NSS, Annapolis, Md., (22.3 kc/s) was

reflected from a point where the maximum optical obscuration was 88 percent. Ch£inges in the phas e and ampli- tude of the signals during the eclipse ranged from about 40 percent to 100 percent of the diurnal variation. The

times of the maximum pha se and amplitude effects were used to calculate effecti coefficients

for the ionosphere. The m aximum amplitude for VLF sig- nals occurred before the 1 optical obscuration. This can be attributed to a speci fic source of

ionizing radiation above limb, which

would be uncovered before the optical maximum. The

calculated effective recombination coefficient is about

2 x 10 -5 . This value is closer to the value of approxi- mately 3 x 10~ 6

, calculated from theory by Crain [1961]

for the nighttime ionosphere, than to Crain's daytime

value. Most values of recombination coefficients from previous radio experiments are closer to Crain's daytime

values. 11 p. (Paper 69D7-528, p. .947). A comparison of radar auroral reflection data with acoustic wave theory, R. L. Leadabrand A comparison is made between 400 and 800 MHz radar

auroral reflection data and the concept that the irregu- 186
larities in electron density responsible for the auroral echoes are plasma waves generated by instabilities in the ionospheric current system. The waves so generated would have their wave fronts parallel to the earth's magnetic field lines and would travel at the acoustic velocity of the medium. The comparison indicates that, al- though many of the key features of the plasma acoustic wave concept can be found in the radar auroral data, the spectral characteristics of the auroral echoes are much

too complicated to be simply understood in their present

form. 6 p. (Paper 69D7-529, p. 959). Electromagnetic properties of a plasma covered antenna,

D. J. Jacavanco

Antenna patterns (E-plane) of an X-band horn, mounted

in a ground plane and covered by a plasma slab were

measured. A pulsed plasma was produced by capacitor discharge in a rectangular Pyrex container of i.d. 6 in. x

2 in. x 24 in. Microwave interferometer measurements of

the electron density were made at 9 and 35 GHz. Antenna patterns are presented which show a sharp de- crease in radiated power at certain angles corresponding

to the "optics critical angle 0 ." Good agreement is obtained for the movement of 6 with plasma density. 3 p. (Paper 69D7-530, p. 965). Influence of an inhomogeneous ground on the propagation

of VLF radio waves in the earth-ionosphere waveguide,

J. R. Wait Propagation of radio waves in the earth-ionosphere waveguide is considered for the case where the lower boundary is an inhomogeneous smooth surface. An inte- gral equation for the problem is formulated in a direct fashion by utilizing the compensation theorem. After some simplifications, several special cases are considered explicitly. For example, in the case of a twosection path consisting of a long stretch of sea and a

short section of land, a relatively simple working formula

is obtained. The result shows that the modal excitation

factors at VLF for an all sea path are significantly re- duced when the foreground is poorly conducting. Another

special case considered is when the propagation path is

all sea except for a short intermediate land section. In this case, it is found that energy from low-order modes

will be transferred to high-order modes with a subsequent reduction of field strength. 7 p. (Paper 69D7-531,

p. 969). Aspects of the terrestrial ELF noise spectrum when near

the source or its antipode, L. G. Abraham, Jr. Radiowave propagation in the extremely low frequency (ELF) range of 3 Hz to 3 kHz has been successfully

treated in the past by a type of waveguide mode theory. This theory simplifies at large distances where only the zero order mode need be considered. It is shown in this paper that for frequencies in the band of 5 Hz to 1 kHz

the zero order mode predominates at any distance in ex- cess of roughly 500 km.

In a lower part of the ELF band (5 Hz to 100 Hz) more

than one approximating form must be used. The com- monly used asymptotic expansion applies only to a middle range of distances between source and receiver. When

the receiver is within roughly one-sixth wavelength of either the source or its antipode then different approxi- mations must be employed. These extensions of the theory are used in this paper to derive modifications of previous results for the terrestrial ELF noise power

spectrum. 11 p. (Paper 69D7-532, p. 977). Analysis of linear arrays focused in the fresnel region, P. P. Lombardini, R. Doviak, and J. Goldhirsh

Several pertinent parameters such as gain, focal ef- ficiency, depth and width of focus are reviewed for a near field focused linear array of radiators of arbitrary spacing. An analytic expression of the field distribution

in the focal region of a phased linear array of Hertzian

dipoles having a constant separation, d, is derived and

characterized by the aforementioned parameters. A di- pole spacing condition in terms of the parameters of the array is derived for which the array of discrete radiators may be approximated by a line source. Several examples

of arrays consisting of more general radiators separated by Fresnel distance are considered (using a digital comparing various array configurations with the analytic expression of a focused spherical basin. 8 p. (Paper 69D77 533, p. 989). Theory of coil antennas, T. Padhi

In this paper, a method is presented by which the distribution of current on some structurally simple coil or multiturn loop antennas may be obtained. The input ad- mittances of unshielded and shielded coils are determined and their operation as receiving elements is considered.

5 p. (Paper 69D7-534, p. 997). Small prolate spheroidal antenna in a dissipative medium, R. H. Williams, R. D. Kelly, and W. T. Cowan A perfectly conducting prolate spheroidal antenna im- mersed in a conducting medium is analyzed. The dimensions of the spheroid are assumed to be small compared

to a skin depth in the medium. A gain factor for the an- tenna as a receiver is computed as a function of the spheroid's axis ratio. The prolate spheroid is then as- sumed to be excited by a circular filament of magnetic

current located in the plane of the spheroid's minor axes

to approximate excitation by a magnetic toroid. Expressions for the antenna's input admittance and effective

length are derived. Some experimental results verifying

the derivation of the input conductance are included. A

computation shows that at VLF, the antenna has a Q of 0.5 or less, and a relatively constant effective length.

7 p. (Paper 69D7-535, p. 1003). Calculated curves for groundwave propagation over in- homogeneous earth with pronounced topographical

features, K. Furutsu

Several numerical examples are presented for radio propagation over a three-section path. These are based

on formulas which were derived earlier [Furutsu, 1957a,

1957b, 1959, 1963; Furutsu, Wilkerson, and Hartmann,

1964] in which the height and the electrical properties of 187
approacl

each section may be different. First the path is as- sumed to be a land-sea-land path and a sea-land-sea

path with no height difference; the attenuation using this model is obtained both for the flat earth and the spherical

earth and the values are compared to show the asymptotic

tch of these two values at short distances. Second,

effect of the height and width of a mesa is illus- trated and the attenuation values are compared to the values obtained when the obstacle is a knife-edge of the same height. Next the effect of varying the receiver height is presented when the path is either a sea-land- sea path or a land-sea-land path. Finally, examples of the attenuation caused by both a channel and an island having bluffs are given which illustrate the recovery ef- fect as well as the diffraction loss in the vicinity of the

coastlines. 15 p. (Paper 69D7-536, p. 1011).

with the magnetosphere, Solar wind and its inter: C. P. Sonett A short summary of the properties of the solar wind, as they apply to the interaction process with the earth's magnetosphere, is given. Necessary conditions on the bow shock are discussed and are compared to experi- mental evidence from several space probes. The im- portance of the downstream or post-shock flow is emphasized. Power spectra and details of the turbulence in this region are reviewed. Limitations due to the very

preliminary status of IMP data analysis are emphasized.

9 p. (Paper 69D8-537, p. 1033). Schumann Resonances, J. Galejs This paper reviews the current work in the field of Schumann resonances and discusses the topics of waveforms and frequency estimates, resonance frequencies and Q factors, source distributions and noise spectra,

diurnal and seasonal changes of power spectra, and vari- ations of resonance frequencies. Observations of the above phenomena are correlated with theoretical considerations. 13 p. (Paper 69D8-538, p. 1043). Earth-ionosphere cavity resonances and the propagation

of ELF radio waves, J. R. Wait This is a tutorial exposition of the theory of ELF

propagation in the earth-ionosphere waveguide. Derivations are not given; instead, the plausibility of the re- sults and the physical aspects of certain special cases

are discussed. A simplified treatment of the Schumann

cavity resonance phenomenon is also given. 14 p. (Paper 69D8-539, p. 1057). Resonances of the earth-ionosphere cavity observed at Cambridge, England, M. J. Rycroft A program of observations of the natural vertical electric field in the atmosphere in the band 1 to 30 Hz is discussed. After rejection of unwanted signals, the ELF (extremely-low-frequency) signal is amplified, its waveform being preserved as a photographic record which

can be digitized automatically. The power spectral density of the field is computed, and at all times shows

statistically significant peaks at 8 and 14 Hz, with evi- dence of other peaks at 20 and 26 Hz. These are the resonant frequencies of modes of the electromagnetic

field in the earth-ionosphere cavity, excited by radiation from lightning discharges. A comparison is made be- tween such spectra and those observed elsewhere. The spectra are also compared with those calculated

theoretically. The agreement is only fair for a sharply bounded, homogeneous, isotropic ionosphere concentric

with the earth, but better for Galejs' model ionosphere

with an exponential conductivity versus height profile. From the derived propagation constant, the attenuation

rate in the band 7 to 30 Hz is found to be approximately

0.25 dB/Mm, i.e., 0.25 dB/1000 km, and the phase velocity 0.77 c. The half width of the thunderstorm belt about an equator (with respect to a pole at Cambridge) is found to be 44° ±12°, in agreement with thunderstorm

statistics. Diurnal and seasonal variations of the power

in the various modes are interpreted in terms of nodes

of the field and the movement of thunderstorm centers. The fine structure of the spectrum is investigated. A

typical measured field strength of 0.34 mV/m in a 1-Hz bandwidth at 8 Hz is shown to be reasonable. The energy in the background spectrum, which over- whelms that in the cavity resonance spectrum below 5 Hz, may be due to nearby lightning activity, local electrostatic effects, or extraterrestrial phenomena. 11 p. (Paper 69D8-540, p. 1071). Experimental results on the dynamics of the F region, W. Becker, R. Riister, and J. Klostermeyer The first part of this paper deals with the response of the nighttime ionosphere to variations of the earth's magnetic field, especially to variations of its horizontal component. It is shown both theoretically and experi- mentally that the whole F region is set in motion by such

variations of the earth's magnetic field and that these motions may be of an oscillatory or a nonoscillatory

character. Amplitudes in real height of 75 and 200 km

respectively are reported. The second part of this paper

deals with other kinds of ultra-low-frequency oscillatory movement of the F region during magnetically quiet winter

nights of which some last for at least 10 hr. A 3-station network of identical ionosondes allows interpretation of them as traveling waves propagating mostly southward and only occasionally northward. Their phase velocities cover the range 15 to 35 km/min and the respective peri- ods of duration lie between 2.8 and 1.5 hr. Missing iono- grams of the field stations prevented phase velocity cal- culations for a 0.7 hr wave. The amplitudes of all the waves covered the range between 10 and 15 km. Traveling waves of longer and shorter wavelengths may be possible but could not be detected because of experimental

reasons. It is believed that these traveling waves repre- sent internal gravity waves as suggested by Hines [i960].

5 p. (Paper 69D8-541, p. 1083). Regular oscillations near 1 c/s observed at middle and

low latitudes, L. Tepley A review is presentee! of some of the more important

properties of Pc 1(0.2-5 c/s) emissions observed at mid- 188
die and low latitudes. Special attention is given to fine structured regular oscillations referred to by various workers as pearls, type A oscillations, and hydromagnetic (hm) emissions. The following aspects of these oscillations are discussed.

(a) Signal appearance. The emissions are considered

from both their amplitude-time (wave-form) appearance

observed on chart records and their frequency-time (f-t) characteristics observed on sonagrams. The various types of f-t fine structure are discussed (rising and fall- ing frequency elements, fan shaped elements, etc.). (b) Simultaniety of occurrence at widely separated lo- cations. A high degree of similarity is often found in the appearance of f-t structural elements of hm emissions

recorded simultaneously at widely separated stations. Attention is given to the time-shifts between these ele- ments at stations in the same hemisphere and in opposite hemispheres.

(c) Time of occurrence. Correlations are considered between times of occurrence of hm emissions and other geophysical effects such as charged particle events, magnetic storms, and variations of the ionospheric parameter F0 F2.

(d) Latitude effects. Various latitude dependent emission characteristics are discussed. These include lati« tude variations of emission frequency, fine structure

repetition period, and signal amplitude.

In addition to the aspects of the Pc 1 emissions out- lined above, properties of two other types of emissions

are briefly discussed. One of these signals, referred to here as a "continuous emission" also lies in the Pc 1 category. It is often observed continuously throughout

the night and is characterized by a slow variation of f-t characteristics. The other signal, which might be placed

in a Pc 1— PI 1 transition category, is observed during magnetically disturbed periods. On sonagrams it is char- acterized by an irregularly spaced rising frequency fine- structure. When monitored aurally on time-compressed

magnetic tape (speed-up factor of 1000 to 2000), it is characterized by a sound similar to bubbles blown under

water. 17 p. (Paper 69D8-542, p. 1089). Preliminary results of a micropulsation experiment at conjugate points, R. E. Gendrin and V. A. Troitskaya This paper summarizes the preliminary results obtained

by different scientists working at the two Institutes on a common program concerned mainly with micropulsation

studies between two conjugate areas at a geomagnetic

latitude of 57°. Morphological studies and digital computations of correlation functions are made on the basis

of the chart records obtained at the two stations. The

signal being recorded independently on magnetic tape, spectral analyses are available also. The principal conclusions are the following: Pc 1 events occur simultaneously at the two stations, the amplitude being stronger in the northern hemisphere

for the period studied (January and February 1964). The

frequencies of the oscillations, and more generally the spectral shape of the signal as a function of time, are very similar at the two stations. The trains of oscilla- tions are time-shifted between the two hemispheres by approximately half the repetition period, confirming some

other experimental results and excluding some theories.

The correlation function method seems to be able to give more details about the spatial and time relations between phenomena in two conjugate areas. Some results concerning the polarization at a single

station and the phase relations between different points

are also given. 10 p. (Paper 69D8-543, p. 1107).

que characteristics of geomagnetic pulsatiicies near 1 c/s, W. H. Campbell and E. C. StiltifreThis is a report of some particular characteristics of unique natural electromagnetic field variations in the frequency range of 3.3 c/s to 0.15 c/s observed at the earth's surface. The signals usually exhibit a rising frequency fine structure but variations are observed. The

midperiod and emission element recurrence period of an event are linearly related. The bursts of activity usually

last about l/2 hr, but a gross recurrent pattern may persist, on rare occasions, as long as 12 hr. Pulsations associated with field lines reaching the greater radial distances occur near the noon meridian; midfrequencies

are lower at this time. Signals are generally not simul- taneous at most high latitude stations in the same hemispheres, but the world level of high activity usually persist for several days. Although no seasonal or 27-day

solar controlled periodicity was observed the emissions

are more likely to occur during high solar activity and in the week following large major magnetic disturbances. No ionospheric effects associated with the field varia- tions were clearly found. Although no great difference

in the number of events was noticed for high and middle

latitudes, there was a scarcity of such signals at the equator. Conjugate point stations show uniquely similar

activity. There may be an alternation of the fine structure between stations in opposite hemispheres on the same earth's magnetic field line. In the high latitudes,

the magnetic flux density vector of the emission appears

to describe a plane perpendicular to the earth's field

line, polarized in a counter clockwise sense, and ellipti- cally elongated in the N—S direction. 16 p. (Paper 69D8-544, p. 1117). n of hydromagnetic ; in the magnetosphere, M. Sugiura

Characteristics of waves in a two-component cold plasma are reviewed. Using the Clemmow-Mullaly-Allis

diagram, the topological types of the wave-normal sur- faces are shown. A consistent system of labeling the modes, initially given by Allis, is explained. Reversal

in the polarization in the electric field is examined, and

all the modes in which the reversal occurs are specified. There is no polarization reversal in ULF to VLF waves

in the magnetosphere. The lower hybrid resonance fre- quency in the magnetosphere is discussed. The equations of motion for an electromagnetic ray are

derived. Defining the action for the ray with analogy to that for a particle in classical mechanics, the principle

of least action is proved. It is shown that if the disper- sion relation is homogeneous in the wave vector and the frequency, the principle of least action implies the prin- ciple of least time, i.e., Fermat's principle. When the principle of least time holds, as is the case with Alfven compressional waves, the trajectory of a ray can be de- 18 9
termined from a variational equation, from which the problem can be formulated in Hamiltonian form. For the

axially symmetric case, the generalized momentum conjugate to the azimuthal coordinate is a constant of motion. Using this relation, "allowed" and "forbidden" re- gions are defined when a set of initial conditions for the

ray is given. This method is applied to a model magnetosphere with a dipole magnetic field. It is shown that the accessibility of hydromagnetic rays originating from the boundary of the magnetosphere to the earth is greatly

limited. For a distorted magnetosphere the canonical equations for a hydromagnetic ray are integrated by a nu- merical method. Typical trajectories in the equatorial plane are shown, and the effects of the deformation of the dipole field on the ray trajectories are discussed.

15 p. (Paper 69D8-545, p. 1133). Ionospheric perturbation, (The roles played by the iono- sphere in geomagnetic pulsations), S. Matsushita Possible roles played by the ionosphere in geomagnetic pulsations are reviewed in this report. First, rela- tions between the quiet ionosphere and regular pulsations

are discussed from the viewpoint of hydromagnetic wave

propagation and ionospheric currents. Ionospheric variations and correlated irregular pulsations during disturbances and storms are then discussed. These phenomena sometimes occur in correlated form

during solar flares, sudden commencements and impulses,

bays, DS variations, and polar elementary storms. The

main causes seem to be solar electromagnetic radiations, hydromagnetic waves, incoming particles, and resultant ionospheric currents. Ionospheric and micropulsation phenomena caused by nuclear explosions and meteors are very briefly reviewed. Emphasis is given to the type of work in this field which

needs to be done in the future. 11 p. (Paper 69D8-546,

p. 1149). Effects of indiced earth currents on low-frequency elec- tromagnetic oscillations, A. T. Price The information about the effects of induced earth cur- rents that can be obtained from analyses of observations and from calculations based on electromagnetic induction theory is examined. The nature of these effects is discussed and estimates of their magnitude for fields of varying extent and frequency are obtained. The influence

of underlying geology and the effects of the oceans are considered. The type of mathematical problem that needs

to be solved to get more detailed information is described.

8 p. (Paper 69D8-547, p. 1161). Equatorial effects, R. Hutton Experimental studies of electromagnetic field varia- tions at stations in the equatorial electrojet region are reviewed, with special reference to anomalous equatorial

features, such as the amplitude enhancement of the longer period fluctuations and the evening occurrence of pc

micropulsations during the IGY. The dependence of the amplitude enhancement on the position of the station

relative to the center of the electrojet and on the strength

of the 5 current is also discussed.

1

Attention is drawn to the many outstanding problems

in the ULF band in the equatorial region, to the relation between magnetic events in the auroral and equatorial zones, and to the great need for a coordinated program of research at equatorial stations. 9 p. (Paper 69D8-548,

p. 1169). Interpretation of early magnetic transients caused by

high-altitude nuclear detonations, S. L. Kahalas and

P. Newman

A high-altitude nuclear detonation produces magnetic

disturbances which propagate to points remote from the detonation area. The worldwide magnetic disturbances

occurring within a few seconds after the detonation are discussed. Data from Starfish are presented to show the general characteristics of the early-time magnetic field behavior. Various interpretations of these results are discussed. In particular, there is a signal occurring

within a few tenths of a second after the detonation. This is interpreted to be the conventional electromagnetic pulse produced by asymmetric absorption of gamma

rays in the lower atmosphere. The pulse propagates to

far distances in the earth-ionosphere cavity. In addition, worldwide data show a second signal occurring within

1.5 to 2 sec after the Starfish detonation. This is also

interpreted as an electromagnetic wave propagating in the earth-ionosphere cavity. It is generated by a bombinduced magnetohy drodynamic wave which propagates downward from the vicinity of the detonation and is converted to electromagnetic form at the lower boundary of the ionosphere. 5 p. (Paper 69D8-549, p. 1 179). A note on the application of pulse compression tech- niques to ionospheric sounding, D. C. Coll and J. R.

Ionograms are presented which demonstrate that sig- nificant improvements in signal-to-noise can be obtained

by replacing the single pulses of a conventional sounder

by a coded-pulse signal. 3 p. (Paper 69D8-550, p. 1191). Comments on a paper "Measurement of the phase velocity of VLF propagation in the earth ionosphere waveguide" by F. K. Steele and C. J. Chilton, H. F. Bates,

1 p. (Paper 69D8-551, p. 1195). Reply to H. F. Bates', comments, F. K. Steele and C. J. Chilton, 1 p. (Paper 69D8-552, p. 1196).

September 1965 Ground-based passive probing using the microwave spectrum of oxygen, E. R. Westwater The determination of the kinetic temperature structure of the troposphere from ground-based measurements of oxygen emission spectra in the microwave region is dis- cussed. Molecular absorption properties of oxygen and

water vapor are reviewed. A new "inversion" technique

is described. This technique uses a least squaresiteration solution which is applicable to Fredholm inte- gral equations of the first kind. The inversion technique

is used to reconstruct two types of tropospheric tempera- 190
cure profiles. The effects of certain types of errors in the brightness temperature on the derived temperature

distribution are computed. 11 p. (Paper 69D9-553

p. 1201). Response of NBS microwave refractometer cavities to atmospheric variations, R. O. Gilmer, R. E. McGavin,

and B. R. Bean The sampling cavity of the NBS re ftactometers has

been evaluated in a wind tunnel, a water flow tunnel, and in the free atmosphere. The cavity is slightly velocity-sensitive. It is also aspect-sensitive, an error being introduced when the wind is oblique to the axis of

the cavity affecting the level of the spectrum. The

characteristic flushing length of the cavity in normal

operation is estimated as 0.75 meters when the wind is into the cavity and considerably more when the wind is oblique angle. A modified cavity has been developed which appears to substantially improve the response of the refractometer. 5 p. (Paper 69D9-554, p. 1213). Effects of rocket out ing on RF experime

Pfister and J. C. Ulw

Pecularities in the results of electron-density measurements with rockets were noticed on several occasions. They were found to be effects of rocket outgassing. When the fuel valves of Aerobee rockets are not shut

after burnout, residual fuel leaks out and diffuses into the atmosphere. Electrons attach to the fuel and de- crease in concentration while the positive ions are not

affected. Outgassing effects were observed on probe

experiments flown in rockets as well as on propagation experiments between rocket and ground. Quantitative estimates indicate that the leaking fuel is a very effective attaching agent. Some solid-fuel rockets also show

similar effects. 7 p. (Paper 69D9-555 , p. 1219). Further analysis of propagation of plasma waves in a "spoke-wheel" magnetic field, R. R. Gold A recent study by R. L. Liboff of electromagnetic wave

propagation in plasmas with a specific type of two- dimensional applied magnetic field is continued in this paper. The plasma is assumed to be of uniform density

in general, and a "spoke-wheel" magnetic field is considered which varies as the inverse radius. Perturbation

series are obtained for the first Fourier component of the electric field for several limiting cases. Both the separate cases of a radial and a circular magnetic field are considered in the present work, the former in greater

detail, and collisions are included. By suitable nondi- mensionalization, two parameters arise naturally in the present analysis, thus affording a more general solution which should be particularly useful in subsequent appli- cations. 7 p. (Paper 69D9-556, p. 1227).

of the transmitted signals which travel over complementary great circle paths. The velocity is found to be 3.04xl08 meters/second with an estimated error of ap- proximately ±0.10x10" meters/second. Differences in measurement technique and general environmental conditions between this experiment and a previous measure- ment of 18-kc/s group velocity which was made in 1949

is discussed. 4 p. (Paper 69D9-557, p. 1235). On the radio noise level at low and very low frequencies

in polar regions, T. S. Jorgensen Measurements of the noise called hiss at low and very low frequencies in polar regions show that hiss can ex- ceed the atmospheric noise caused by thunderstorms and

so determine the minimum field strength of a detectable

radio signal. Existing predictions of radio noise levels do not take account of hiss as an interfering noise, probably because

of the relatively small number of noise measurements

carried out in polar regions. Predictions should therefore be used with caution for the low and very low fre- quencies in polar regions. 3 p. (Paper 69D9-558, p. 1239). Experimental study on the shallowly in a conducti; ig medii

ar loop antenna immersed

K. Iizuka The behavior of a circular loop antenna near the inter- face between a conducting medium and air has been

studied experimentally in terms of the following several parameters:

(1) Circumference per wave length $b of the loop

(2) Loss tangent of the conducting medium

(3) Depth of the loop below the interface

(4) Angle between the plane of the loop and the inter- face. Comparisons were made of the behavior of a loop when oriented both parallel to the interface and perpendicular to it in terms of such quantities as the driving- point admittance, the amplitude and phase distributions

of the current, the effect of varying the distance from

the interface, and the upward transmission of power into

air from the loop when immersed in the conducting

solution. S

It was found that as the depth of the loop is increased

the values of the driving-point admittance asymptotically approach the theoretical results by King, Harrison, and

Tingley [1964] and Wu [1962] for an infinite medium. As

the size of the loop became larger the difference be- tween the driving-point admittance for the loop oriented

parallel to the interface and that for the loop perpendicular to the interface increased. It was discovered that there exists an optimum angle tilted from either parallel

or perpendicular orientation for the best upward trans- mission of power. 6 p. (Paper 69D9-559, p. 1243).

Measurement of group velocity of 17.8-kc/s VLF radio waves, W. D. Westfall Group velocity of 17.8-kc/s VLF radio waves is de- termined by measuring the difference in time of arrival

Directivity of uniformly spaced optimum endfire arrays with equal side lobes, M. T. Ma A mathematical formulation is devised for a uniformly spaced and uniformly progressively phased antenna array 191
of a given number of isotropic elements such that the

final radiation pattern is endfire with no large backlobe. The pattern also has the maximum number of sidelobes

of equal level, modifying the result of an earlier paper, even when the element spacing is made arbitrarily small. The directive gain, the first null beamwidth, the half- power beamwidth, the current excitations, and the re- quired phases for such an array are given in curves as a function of the element spacing. It is shown that the

limiting radiation characteristics when the element spacing approaches zero can also be determined in a rela- tively simple manner. 7 p. (Paper 69D9-560, p. 1249).

>n of Fock theory for (

, V. H. Weston

the penumbra

For high-frequency scattering by a plane electromagnetic wave incident upon a convex surface, the current

distribution in the transition region between the illumi- nated and shadow region, and beyond, was considered by

V. A. Fock. The effect of the surface being flat and no

longer parabolic in the penumbra region is considered

here. There are two cases considered, one for which a plane wave is incident along a plane perfectly conducting surface towards a drop in this surface, this drop represented by a locally convex parabolic cylinder smoothly joined to the plane section. An expression is derived for the fields on the convex surface in the pe- numbra region, and deep in the shadow region the ap- propriate creeping wave expression is obtained. For the other case, a plane wave is incident towards a convex

parabolic section smoothly joined to a planar section smoothly joined to a planar section with the parabolic

section lying in the illuminated region, and the direction

of the incident wave being along the planar section. It is shown that far along this flat section, the total field on the surface is comprised of the incident field plus a

traveling wave field which decreases as the square root

of the distance from the illuminated side. 13 p. (Paper 69D9-561, p. 1257).

cle interpretation of bilinear transformation and its application to VSWR minimization, J. G. Rudolph and D. K. Cheng A technique using an isometric-circle interpretation of a bilinear transformation has been developed for mini- mizing the input VSWR of a transmission line consisting

of multiple discontinuities joined by line sections. It makes possible the determination not only of the mini- mum attainable input VSWR but also of the required line lengths between the successive discontinuities. The

case for N real and equal discontinuities is particularly simple, and the necessary conditions for obtaining a perfect match are established. Numerical examples are given. 13 p. (Paper 69D9-562, p. 1271).

Magneto-ionic propagation in inhomogeneous

Part I. Transverse propagation, B. K. Banerje Propagation of electromagnetic waves in an inho geneous magneto-ionic medium has been discussed \

special reference to ionospheric propagation. This in- volves the study of two coupled linear second-order dif- ferential equations with coefficients having one essential and more than one regular singularity. The problem has

been tackled in two stages, divided into parts I and II of

this paper.

In part I, dealing with the transverse propagation in a parabolic electron layer, the wave equation belonging

to a class higher than the confluent hypergeometric or Mathieu equations has been investigated. In part II, dealing with the oblique propagation, the effect of the coupling function for the above class of equations has been studied, and relevant asymptotic solutions for the coupled equations derived. Mathematical expressions for the physical observables

in ionospheric investigations have been derived from the solutions of the wave equations inside a parabolic electron layer. 11 p. (Paper 69D9-563 , p. 1285).

Magneto-ionic propagation in inhomogeneous media.

Part II. Oblique propagation, B. K. Banerjea

Oblique propagation of electromagnetic waves in an inhomogeneous magneto-ionic medium is described by a pair of coupled, linear, second-order differential equations, with coefficient functions having one essential

singularity and more than one pole. An analytic method

to study this general type of propagation has been de- veloped in this paper. Mathematical expressions for all the physical observables in the ionospheric investigations have been de- rived for a parabolic electron layer. The expressions

for the phase retardation and the tilt of the polarization

ellipse differ radically from those derived from the ray optics of Appleton and Hartree. 10 p. (Paper 69D9-564,

p. 1297).

Irreversible power and radiation resistance of antennas

in anisotropic ionized gases, K. S. H. Lee and C. H. Papas

In this paper a new theory for the calculation of the radiation resistance of antennas in gyroelectric media is presented. This new theory ensures the irreversibility and infiniteness of the radiation resistance. 8 p. (Paper 69D10-565, p. 1313). Scattering resonances of a cylindrical pla W. M.

The Vlasov equation has been solved for the pla esonance spectra of a realistic model by theconducf ity sthod. The results give a clearer picture of the nature of plasma resonance than heretofore available. The calculation includes Landau damping and does not impose unphysical boundary conditions. The problem of chief interest here is the scattering of electromagnetic

radiation near the electron plasma frequency from a cylindrical plasma when the wave vector and polarization are perpendicular to the cylinder axis. The plasma is non- 192
uniform and bounded by a sheath, and has diameter a small compared to the free space wavelength. The scat- tering resonances at the lower frequencies are produced

by charge density perturbations concentrated at relatively large radii. But, the problem of a perfectly collisionless

cylindrical plasma cannot be reduced to a one-dimensional problem without neglecting some of the resonances with

periodic electron orbits. It is argued that weak coulomb

collisions destroy these "transit time resonances," and

that the problem is adequately described by keeping just one period of the electron orbit in the calculation of the conductivity kernel. The cylindrical problem then re- duces to the problem of the steady, driven, oscillations

of a thin one-dimensional slab of collisionless, Maxwellian, plasma, with a wall at x = 0 which emits elec- trons and absorbs all electrons that return to x = 0, and

an insulated wall at x = x w which also absorbs electrons. A model is used in which the unperturbed electric field, everywhere in the positive x-direction is uniform in the plasma, 0 -x s, and joins smoothly to a harmonic oscillator field in the sheath, s -x -x . The conductivity kernels for a large number of frequencies have been cal- culated, and inverted, on large electronic computers. The results show that much of the Landau damping which

determines the line shapes is concentrated near the sheath, and the resonance frequencies are determined by

the properties of the sheath and the neighboring regions

of the plasma. 13 p. (Paper 69D 10-566, p. 1321). Radiation patterns from plasma enclosed cylindrical hy- personic vehicles, J. H. Harris, A. T. Villeneuve, and

L. A. Broca The effect of plasma sheaths on the radiation patterns

of antennas on hypersonic vehicles is theoretically in- vestigated. A simplified mathematical model is employed

that consists of an infinitesimal longitudinal magnetic

dipole on a plasma-enclosed cylinder. Computed radiation patterns for the point source and for a horn and a

slotted array are presented. The effects of varying both the permittivity and the loss tangent of the sheath are considered. It is found

that in the lossless case the radiated power of an other- wise omnidirectional source is greatly reduced in spatial regions beyond the critical angles of the sheath as de- fined from geometrical optics. Also, the transmission

loss at broadside due to a lossy sheath is found to be

generally greater than predicted by plane-wave, plane- sheath approximations. These results are extensions of earlier work by Harris. Some of the curves in this paper are corrections to the

earlier work. 9 p. (Paper 69D 10-567, p. 1335). The Schumann resonances, R. K. Cole, Jr. The resonances of the earth ionosphere cavity are con- sidered directly as a cavity problem rather than as a

limiting case of propagation in a quasi-waveguide with an arbitrary (spherically symmetric) conductivity profile. By using an approximation to a theoretically derived profile, values for the frequencies and Q factors of the lower resonances are computed which compare with experi- mental results as well as or better than the values de- rived from previous models. The effects of small changes

in the profile are also considered. It is shown that ionic

conduction in the lower atmosphere should not be neg- lected and that the "knee" in the conductivity profile where the transition from ionic to electronic conductivity occurs has a significant, and previously unrecognized,

effect, particularly on the Q factors of the resonant modes. 5 p. (Paper 69D10-568, p. 1345).

Atmospheric radio noise bursts in the LF band at Bangalore, S. V. C. Aiya and K. N. Lakshiminarayan An atmospheric radio noise burst represents the radi- ation received from one complete lightning flash at the frequency to which the receiver is tuned and within the receiver bandwidth. The characteristics of such noise

bursts arising from sources at various distances have been investigated. The group of bursts with the highest amplitudes present at any given time can be investigated separately by adjusting the sensitivity of the receiver. The number of bursts in a group due to sources up to about 1000 km mostly lies between 10 and 40 per minute. The short and long term amplitude and time characteristics of these bursts have been investigated. The dis- tributions are found to be log-normal. In the case of distributions of parameters studied over a short period of time, the standard deviation is practically constant. The

long term characteristics indicate that there are systematic variations from 12 to 20 hr 1ST. 8 p. (Paper 69D10-

569, p. 1351). Influence of finite ground conductivity on the propagation

of VLF radio waves, J. R. Wait and K. P. Spies Calculations of the modal characteristics of the earth- ionosphere waveguide are presented for a wide range of ground conductivities. It is shown that the attenuation

rate of the dominant modes, as a function of ground conductivity, has a maximum value which depends on fre- quency and various waveguide parameters. One of the important findings is that frequencies of the order of 10 kc/s may be more adversely affected by very-low conductivity than frequencies of the order of 30 kc/s. 15 p. (Paper 69D10-570, p. 1359). Model experiments on propagation of groundwaves across

an abrupt boundary at perpendicular incidence, R. J. King and S. W. Maley An electromagnetic groundwave propagating along the surface of the earth will be partially transmitted and

partially reflected at an abrupt electrical discontinuity such as a coastline. An exact theoretical solution for the transmitted and reflected waves appears to be very

difficult; however, several investigators have recently found approximated solutions. The accuracy of these

solutions has been difficult to evaluate because, when

making measurements over the surface of the earth, it is difficult to separate the effects of abrupt electrical dis- continuities from those of terrain, nonabrupt electrical discontinuities, etc. To overcome these difficulties a laboratory study has been made using models having

carefully controlled dimensions and electrical parameters and having precisely known electrical discontinuities. The laboratory study has shown close agreement with the theory as formulated by J. R. Wait in 1956 and extended 193
recently by the first author in his doctoral thesi (Paper 69D 10-571, p. 1375).

Propa^ of puis. in dispersiv- media, J. R. The paper deals with various approximate procedures

for calculating the distortion of a pulse after it has propagated through a dispersive channel such as a waveguide. The methods used for evaluating the integrals

utilize a stationary phase principle. Both impulsive-type and quasi-mono chrom shown that, in most c: obtaii

ic sources are considered. ^ cases, tne transient response may be

ghtforwardly from the shape of the phase

versus frequency characteristics of the system. Some at- tention is given to the complication which arises when

the group velocity has an extremum as a function of fre- quency. 15 p. (Paper 69D11-572, p. 1387) An anisotropic electron velocity distribution for the cyclotron absorption of whistlers and VLF emissions

H. Guthart

In 1962, Scarf proposed cyclotron absorption as the physical mechanism explaining the high-frequency cutoff of nose whistlers. Using the Scarf proposal, two anisotropic electron velocity distributions for the magneto sphere

are assumed and the complex refractive index is evalu- ated for each. The transverse (with respect to the ambient earth's field) velocity distribution in each case is assumed Maxwellian. The first longitudinal distribution of velocities considered is Maxwellian to several mean

square velocities and then is proportional to v~ 1

. The

cyclotron damping term is then evaluated; however, upon

investigation, the rate of change of whistler damping

with frequency is found to be insufficiently rapid to agree

with the observed whistler cutoff. The second velocity

distribution considered is a double-humped Maxwellian,

i.e., a thermal electron distribution, and a resonant electron stream. This distribution allows for cyclotron ab- sorption and, at the same time, is consistent with the whistler dispersion and attenuation. Arising from the analysis of the double-humped Maxwellian distribution is a transverse instability developed by Bell and Buneman

which leads to VLF emissions. The relative importance

of cyclotron damping vis-a-vis VLF emissions is ex- amined and a qualitative explanation of some whistler- induced emissions is suggested. 13 p. (Paper 69D11-

573, p. 1403).

;lectron tempei , H. Guthart

of magneto sphei

The fractional deviation of nose whistler group delay

from the zero-temperature model has been calculated as- suming a Maxwellian magnetosphere and a gyrofrequency

electron density distribution; i.e., the electron density

varies as the inverse cube with distance from the earth's

center. The thermal correction to the zero-temperature group refractive index has been inserted into the nosewhistler group delay integral to determine the modified group delay. Significant deviations from the zerotemperature group delay for frequencies above the nose

frequency have been calculated. Since deviations from

the zero-temperature dispersion of a few percent are readily discernible, nose whistler data should provide at least an estimate of the upper bound on magnetosphere

temperature. Twenty-three whistlers have been analyzed

id an upper bound on magnetosphere temperature of determined. 8 p. (Paper 69D 11-574, 2(10 4

) °K h

p. 1417). Interference rejection capability of a vitched radiometer,

R. E. Clapp The increasing congestion of the radio-frequency spectrum makes necessary a reexamination of current tech- niques used in radiometric receivers for radio astronomy. Square-wave switching, as currently used, modulates in- coming CW signals and introduces sidebands which can

intrude on the presently available windows in the spectrum. This effect can be treated as an apparent deterioration of an ideal square-sided filter. Examples are given,

for different filter bandwidths and chopping frequencies. Where radiometry is interference-limited, sinusoidal chop- ping or a correlation technique avoiding chopping is strongly recommended. 5 p. (Paper 69D11-575, p. .1425).

Atmospheric breakdown lim propagation, R. G. Tomlinsc

optical maser

It is shown that air breakdown by focused optical maser pulses is dependent on gas pressure. It would

appear that megawatt type pulses of 10 to 100 nanosec- ond duration could produce air breakdown. 3 p. (Paper 69D11-576, p. 1431).

steps and amplitude

l and dusk, D. Walker

ling of VLF signals

An experiment is described which tests the conse- quences of an explanation by Crombie of phase steps and

amplitude fading at dawn and dusk. It is concluded that the explanation is valid at 18.0 kc/s for the types of path

studied. 9 p. (P aper 69D1 1-577, p. 1435). Propagation in a model terrestrial waveguide of nonuniform height: Theory and experiment, E. Bahar and J. R. Wait Propagation of electromagnetic waves in multimode waveguides of variable height is investigated. The

model consists of two uniform rectangular waveguides

connected by a linearly tapered waveguide section. Using a generalized reciprocity theorem for waveguide

junctions, a previous quasi-optic solution of this prob- lem is extended to account for reflected waves. The re- sults have application to the theory of VLF radio propagation when the effective height of reflection of the ionosphere boundary varies along the path. The analyti- cal investigation has been complemented by laboratory

5 taken from a two-dimensional microwave

, and good agreement with calculated results was

'ed. 19 p. (Paper 69D11-578, p. 1445). 194
Comments on H. Yolland's "Remarks on Austin's for- mula", J. R. Wait

In a recent paper(published in Nachr. Techn. Zeitschr.

)

Volland proposes an analytical model of the earth- ionosphere waveguide which is claimed to be in basic agreement with the predictions of the semiempirical

transmission formula of L. W. Austin for frequencies less

than 300 kc/s. In this note, the flat-earth assumptions made by Volland are questioned and any agreement of his

result with Austin's formula is attributed to a fortuitous cancellation of errors. 3 p. (Paper 69D11-579, p. 1465). The path integrals of LF/VLF wave hop theory, L. A. Berry and M. E. Chrisman

This paper continues development of a full wave propagation theory for low-frequency radio waves which is analogous to geometric optics. The effects of earth conductivity, reflection height, and earth curvature are de- scribed by the path integral, and accurate methods for computing it, especially suitable for a programmed computer, are given. Knowledge of the path integral and the ionospheric reflection coefficient, which are independent,

permit calculation of skywave field strengths. Sample

calculations are shown which confirm that the LF sky- wave is diffracted deep into the shadow region. Possible

applications include calculation of LF and VLF field strengths and extraction of ionospheric reflection coeffi- cients from field measurements. 12 p. (Paper 69D11-

580, p. 1469). Reactive loading of arbitrarily illuminated cylinders to minimize microwave backscatter, K. M. Chen

In this paper a study of the minimization of the radar cross section of a thin cylinder by central loading is pre- sented. The induced current on a center-loaded cylinder illuminated by a plane wave at an arbitrary angle is de- termined. The backscattered field is calculated and the optimum loading to achieve zero broadside backscattering

is obtained. An optimum impedance loaded at the center

of a resonant cylinder can reduce its radar cross section more than 30 dB for any aspect angle. For an antireso- nant cylinder an optimum central loading can minimize

the radar cross section in the broadside direction but it cannot modify appreciably the radar cross section in the off-broadside direction. The effectiveness and the feasibility of the loading technique for the reduction of the radar cross section of a metallic body is discussed. 22

p (Paper 69D 11-581, p. 1481). On the statistical theory of electromagnetic waves in a fluctuating medium (II). Mathematical basis of the analogies to quantum field theory (a digest), K. Furutsu Many analogies to quantum field theory exist inherently

in the statistical theory of waves; for instance, the prob- lem of getting the effective medium constant and the ef- fective coupling constant between the waves and the

fluctuating medium can be treated in almost the same way

as in field theory (theory of renormalization). These

analogies are shown to be due to the fact that basic

equations exist in the statistical theory which corre- spond closely to the fundamental equations in field theory; i.e., to the commutation relations and the Heisenberg equation of motion. A probability density function

of waves is introduced here which corresponds to the probability amplitude function in quantum mechanics. In this case, the boundary conditions at infinity for this probability density function are found to be expressed in the same form as the vacuum boundary conditions in field theory. The theory of the statistical Green's functions and their relationships to the expectation values of physical variables is also extensively developed, using auxiliary external sources of the wave and the fluctuating medium. It is found that there exists a one-to-one cor- respondence between the formalism of Green's functions presented here and that used in field theory. The above

correspondence may be important for the further develop- ment of the statistical theory of waves, just as the ad- vanced techniques of field theory have greatly influenced

the development of thermodynamics. The details of the theory were recently published

[Furutsu, 1965]. 2 p. (P aper 69D 1 1-582, p. 1503). December 1965 Symposium on Planetary Atmospheres and Surfaces, May 1965:

I Session: JUPITER, AS OBSERVED AT LONG

RADIO WAVES

The decametric radio emissions of Jupiter, G. R. A. Ellis The present state of knowledge of the decametric radio emissions of Jupiter is reviewed. Theories of the radi- ation are discussed and their implications concerning the general environment of Jupiter and the properties of the Jupiter magnetosphere are examined. The survey reveals

the need for more observations and additional work on

the theory. 18 p. (Paper 69D12-583, p. 15 13). Results of recent investigations of Jupiter's decametric

radiation, T. D. Carr, S. Gulkis, A. G. Smith, J. May,

G. R. Lebo, D. J. Kennedy, and H. Bollhagen The activity of Jupiter's decametric radiation appears

to be greatest between 5 and 10 Mc/s, but measurements made below 10 Mc/s are subject to large ionospheric

errors. No significant change in rotation period has ap- peared since I960. The effect of the satellite Io as re- ported by Bigg has been corroborated. Marked variations

in axial ratio with System III longitude were observed,

from which estimates were made of the meridians of the poles. A ray-tracing study was made of the focusing of

radiation escaping from possible Jovian field-alined ducts. The effect of asymmetrical stop zones is dis- cussed. A possible explanation of the influence of Io is offered. 7 p. (Paper 69D12-584, p. 1530). Results from CSIRO, Sydney, Australia, O. B. Slee and

C. S. Higgins The CSIRO data at 19.7 Mc/s confirm in general terms

the influence of Io reported by Bigg [1964]. 195
The major recent result has been the measurement of

the angular size of the source of the bursts at 19.7 Mc/s.

This continues earlier work [Slee and Higgins, 1963] in which the sources were not significantly resolved. The

present observations were made near the oppositions of 1963 and 1964, using baselines up to 12,700 wavelengths

long. At the longest baselines the sources are well re- solved (fig. 1), the apparent diameters ranging from 5 sec

of arc to greater than 15 sec of arc. This variability is

real. 2 p. (Paper 69D12-585, p. 1536). Frequency and polarization structure of Jupiter's decametric emission on a 10-millisecond scale, J. W. War- wick and M. A. Gordon We present observations of decameter Jupiter emission on a 10-millisecond time base. After describing the swept-frequency polarimeter we discuss polarization and

spectral characteristics in termsofpropagation conditions along the ray path from Jupiter to Arecibo. 6 p. (Paper 69D12"586, p. 1537).

II Session: JUPITER, AS OBSERVED AT SHORT

RADIO WAVES

Jupiter, as observed at short radio wavelengths, J. A. Roberts The history of our knowledge of the microwave emission from Jupiter is reviewed briefly, highlighting only what appear to the reviewer to be the significant ad- vances. The Van Allen belt emission has a constant

flux density, and polarization from 200 Mc/s to 3000 Mc/s, but probably decreases at frequencies above 3000 Mc/s. The radiation from the disk corresponds to near

infrared temperatures at wavelengths of a few centi- meters, but may increase at longer wavelengths, reaching

twice this value at 10 cm. The rocking of the plane of of polarization and the beaming of the radiation are dis- cussed. The present state of knowledge is reached with

the presentation of a preliminary map by Berge showing

the distribution of brightness over the radio source, and

a comparison of this map with preliminary model calculations by Ortwein, Chang, and Davis. This comparison shows that there are two Van Allen belts having very

different electron pitch angle distributions. 10 p. (Paper 69D12-587, p. 1543).

An interferometric study of Jupiter ar 10 and 21 cm, G.

L. Berge, 5 p. (Paper 69D12-588, p. 1552). Dependence of Jupiter's decimeter radiation on the electron distribution in its Van Allen belts, K. S. Thome

Numerical calculations are presented, which relate the

intensity and polarization of Jupiter's decimeter radiation to the distribution of synchrotron-radiating electrons

in its "Van Allen belts." The calculations are based

on the simple model of a dipole magnetic field centered

in the planet but inclined to the axis of rotation. Shad- dowing by the planet's disk is taken into account. An

appropriate choice of the parameters of the model enables one to account for (1) the intensity, (2) the spectrum,

(3) the beaming, and (4) the degree of polarization of

Jupiter's decimeter radiation. However, the model can- not account for the observed asymmetries in the beaming

and polarization. 4 p. (P aper 69D12-589, p. 1557). Observations of Jupiter at 8.6 mm, J. E. Gibson, 1 p. (Paper 69D 12-590, p. 1560). Simultaneous observationsof Jupiter on three frequencies,

I. Kazes, 3 p. (P aper 69D 12-591, p. 1561). A report of measurements, D. Barber and J. F. R. Gower,

1 p. (Paper 69D 12-592, p. 1563).

Ill Session: PASSIVE RADIO OBSERVATIONS OF

VENUS, SATURN, MERCURY, MARS, AND URANUS

Passive radio observations of Mercury, Venus, Mars,

Saturn, and Uranus, A. K. Barrett The radio observations of Mercury, Venus, Mars,

Saturn, and Uranus are reviewed and discussed in rela- tion to knowledge of these planets acquired by other means. In the case of Mercury, it is shown that the

radio observations imply a temperature of ^300 °K for the unilluminated hemisphere, a result which appears to be in sharp disagreement with infrared measurements of Mercury. Two detailed measurements of the Venus spectrum near 1-cm wavelength are presented and compared.

9 p. (Paper 69D 12-593, p. 1565). Mars and Venus at 70-cm wavelength, H. E. Hardebeck,

p. 1 (Paper 69D12-594, p. 1573). Radio observations of Mercury, Venus, Mars, Saturn, and

Uranus, K. I. Kellermann, 3 p. (Paper 69D12-595, p. 1573).. The observations of radio emission from the planets Mercury, Mars, and Saturn at wavelength of 8 mm, A. E. Salomonovich, 1 p. (Paper 69D 12-596, p. 1576). A search for the 1.36-cm water-vapor line in Venus, F. D. Drake, 1 p. (Paper 69D 12-597, p. 1577). Radiation of Venus at the 13.5-mm water-vapor line, J. E. Gibson and H. H. Corbett, p. 3. (Paper 69D12-

598, p. 1577). Observations of the 1.35-cm water-vapor line in Venus,

W. J. Welch, 1 p. (Paper 69D 12-599, p- 1580). Observations of Mars at 12.5-cm wavelength, D. O. Muhle- man and T. Sato, 1 p. (Paper 69D12-600, p. 1580). On the nature of the cloud layer of Venus (from radio- metric observations at microwaves), A. E. Basharinov

and B. G. Kutuza The hypothetic presence of supercooled water drops in the cloud layer of Venus has been checked by extrapolating the 8-mm wave absorption value, obtained from phase variation of radio brightness temperatures, into millimeter and centimeter wave ranges.

It has been shown that the extrapolated values of the

radio brightness temperature spectrum are in satisfactory 196
agreement with the radio brightness temperature values measured at the nocturnal side of Venus. The content of water in the cloud layer is estimated to be about 0.2-0.3 g/cm 2

, the absorption in the layer not exceeding 1.5 decibels in the centimeter range and being

not above 5 decibels in the millimeter range for a wavelength of above 3 mm. 4 p. (Paper 69D12-601, p. 1580). An analysis of microwave observations of Venus, C. Sagan and J. B. Pollack, 2 p. (Paper 69D12-602, p. 1583). IV Session: PASSIVE RADIO OBSERVATIONS OF THE MOON

Investigation of the surfaces of the Moon and planets by the thermal radiation, V. S. Troitsky

In the present paper the attempt is made to summarize

the numerous data, experimental and theoretical, of the investigation of the lunar and planetary surfaces based

on their thermal radiation and to consider it from a com- mon standpoint following from the physical principles discussed in this study. Accordingly, in the first part a

brief theory is set forth of the methods for investigating

the properties of planetary material. Secondly the re- sults are given obtained by their application to the emission of the Moon. 28 p. (Paper 69D12-603, p. 1585). Polarization of thermal radiation of the Moon at 14.5 Gc/s, P. G. Mezger, 1 p. (Paper 69D12-604, p. 1612). Linear polarization of lunar emission, R. D. Davies and

F. F. Gardner, 1 p. (Paper 69D12-605, p. 1613). Paper 69D12-606 withdrawn. The effect of roughness on the polarization of thermal emission from a surface, T. Hagfors and J. Moriello,

2 p. (Paper 69D 12-607, p. 1614). Measurements of lunar radio brightness distribution and

certain properties of its surface layer, A. E. Salomonovich, p. 1 (Paper 69D12-608, p. 1616). V Session: RADAR OBSERVATIONS OF THE PLANETS

A review of radar studies of planetary surfaces, G. H. Pettengill

In recent years, radar has been used to study the sur- faces of the planets Mercury, Venus, Mars, and Jupiter.

In the case of Venus, attenuation in the planetary atmos- phere at short wavelengths has also been reported. For Mercury and Venus, where the diurnal rotation is difficult

to establish by other means, radar has provided a clear- cut determination of the sidereal periods as 59 and 247

days, respectively. Mercury is found to possess surface conditions not

unlike those on the Moon. Venus appears to have a sur- face considerably denser and smoother than the Moon,

but displaying several localized regions of scattering enhancement. Mars appears smoother than the other

planets, with a marked degree of surface differentiation. Except for one brief period of observation in 1963, Jupiter

appears exceedingly inefficient as a reflector of deci- metric radio energy. 7 p. (Paper 69D 12-609, p. 1617).

Preliminary Venus radar results, R. M. Goldstein, 3 p. (Paper 69D12-610, p. 1623). Preliminary Mars radar results, R. M. Goldstein, 3 p. (Paper 69D12-611, p. 1625). Recent Arecibo observations of Mercury, G. H. Pettengill,

2 p. (Paper 69D12-612, p. 1627). Recent Arecibo observations of Mars and Jupiter, R. B. Dyce, 2 p. (Paper 69D12-613, p. 1628). Radio evidence on the structure and composition of the Martian surface, C. Sagan and J. B. Pollack, 1 p. (Paper 69D12-614, p. 1629). Radar scattering from Venus and Mercury at 12.5 cm, D.

O. Muhleman, 2 p. (Paper 69D12-615, p. 1630). Application of planetary measurements to planetary

radius and rotation rate determinations, I. I. Shapiro,

2 p. (Paper 69D 12-616, p. 1632). Radar observations of Venus in the Soviet Union in 1964,

V. A. Kotelnikov, 2 p. (Paper 69D12-617, p. 1634). VI Session: RADAR OBSERVATIONS OF THE MOON

Radar studies of the Moon, J. V. Evans

Accurate range measurements have been reported only by the group working at the Naval Research Laboratory. Their most recent value for the mean center-to-center distance between the Earth and the Moon is 384,400.2 ±1.1 km and is based upon a value for the Earth's radius

of 6,378,170 m which seemed most consistent with the observed diurnal variation in range. The absolute cross section of the Moon has been de- termined over a wide range of wavelengths to a precision

in most cases of ±3 dB. Unfortunately, this uncertainty

is too large to permit any definite conclusions to be drawn concerning the wavelength dependence in the cross

section. The observations suggest that the cross section remains constant about 7 percent of the projected area of the Moon's disk at wavelengths in the range 1 cm to 1 m, and perhaps rises to 10 percent or higher at wavelengths

in the range 1 to 10 m. Short-pulse observations can be used to explore the angular dependence in the scattering of radio waves by

the lunar surface. Useful measurements have been made

at wavelengths of 1130, 68, 23, 10, and 3-6 cm. The

angular dependence has also been investigated at 8.6 mm, though here the angular resolution afforded by a nar- row pencil-beam antenna was employed. At all six wavelengths, it appears that part of the echo arises from a highlight located at the center of the Moon's visible disk. A second component comes almost equally from the re- maining parts of the surface. The division of power in the two components changes markedly as the wavelength

is reduced. At 68-cm wavelength, 80 percent of the power is returned from the highlight, but at 8.6 mm only 197
15 percent can be associated with this component. The

angular power spectrum observed for the power from the highlight also changes with wavelength, indicating that the rms slope of the surface increases as the wavelength

is reduced. These observations have been interpreted as indicating that there is a wide range of structure sizes on the Moon. The deduced values of dielectric constant range from

k = 2.79 down to k = 2.13. In view of the greater experi- mental difficulties together with the doubtful validity of the assumptions at 8.6-mm wavelength, this apparent wavelength dependence should be accepted with caution.

If real, it may be caused by the finite conductivity of the material (i.e., s ^ 0 in (6)) or by inhomogeneity in the surface layers — the density perhaps increasing slightly with depth. These values certainly indicate that the surface is broken or porous in texture — the material oc- cupying perhaps about 30 percent of the available volume.

In short, the echo intensity and angular spectrum is comparable to that observed from aircraft over terrestrial deserts. 23 p. (Paper 69D 12-618, p. 1637). Decameter-wave radar studies of the lunar surface, J. R. Davis, D. C. Rohlfs, G. A. Skaggs, and J. W. Joss An extended series of decameter-wave measurements

of the total radar cross section of the Moon has corro- borated a previous suggestion that this parameter has a

substantially larger value in the decameter region than at shorter wavelengths. Examples are given of the ionospheric effects which require decameter-wave measure- ments conducted over a transionospheric path to be re- garded with caution. A beginning study of possible dis- crete scattering centers located in regions toward the limb of the Moon is described. 8 p. (Paper 69D12-619,

p. 1659). Lunar mapping by coherent-pulse analysis, T. W. Thompson, 3 p. (Paper 69D12-620, p. 1667). Interpretation of the angular dependence of backscattering

from the Moon and Venus, P. Beckmann and W. K. Klemperer A previously derived formula, expressing the variation

of the mean power backscattered from the rough surface

of a planet with the delay time or angle of incidence by

taking into account both the composite roughness of the surface and shadowing effects, is checked against new

data from the Moon and Venus at five different wavelengths. The agreement with the lunar data is very good

and leads to certain conclusions on the nature of the

lunar surface. The data on Venus are also in good agree- ment and indicate that its surface is smoother than that of the Moon, but with an abundance of small structure. 8 p. (Paper 69D 12-621, p. 1669). A note on the radio reflectivity of the lunar surface, A. Giraud To the extent that scattering phenomena can put boundary conditions on properties of the surface, the re- sults obtained by the use of radar have provided less

information on the lunar surface than the passive radio observations. Where the latter have given information such as on the refractive index or the thermal resistivity, the interpretation of the lunar radar echoes has dealt principally with the character of the geometry of the re- flected surface. Once this aspect is established, it is possible to obtain the reflection coefficient at normal

incidence, given by Fresnel's formula.

1 - V K

' +iK "

1 + V K ' +iK"

where K ' and K" are the real and imaginary parts of the complex relative permittivity.

In this way one finds K ' — 2.7 at decimeter wavelengths. The same coefficient of reflectivity obtained

at centimeter wavelengths by Russian radio astronomers,

through the surface emissivity and Kirchhoff's Law, give us K' — 1.5. This difference between the properties of the lunar surface was attributed to the greater penetration

of the longer waves.

In this study we propose to explain such a variation of the coefficient of reflectivity with wavelength, by using

only radar data. We will quantitatively explain this vari- ation by the use of a model where the lunar surface does

not consist of abrupt discontinuities — where the reflec- tive properties may be explained by (1) at wavelengths

greater than a few meters. 5 p. (Paper 69D 12-622, p. 1677). Moon distance measurement by laser, A. Orszag, p. 9. (Paper 69D 12-623, p. 1681). Some highlights of the URSI symposium on electromagnetic wave theory held in Delft, The Netherlands, September 6-11, 1965, J. R. Wait, 3 p. (Paper 69D12-

624, p. I69n.

TITLE PAGE AND CONTENTS TO VOL. 69. 17 p.

198
3.5. CIRCULARS

Circulars are compilations of information on various subjects related to the Bureau's scientific and technical

activities. They not only include the results of Bureau

studies but give data of general interest from other sources. The Circular series was discontinued in June

1959- However, recently it was necessary to publish a few additional publications as Circulars, because they contain the final results of several papers issued as

separate parts in the series. After June 1959. material

that would formerly have been published in this series has been largely directed to the Journal of Research and

the new Monograph series (page 199). See "Price List

of Available Publications," page 396.

C 488. Sections 3, 4, and 5. An ultraviolet multiplet

table, C. E. Moore

This work has been carried on as part of the project on "Atomic Energy Levels", with each section of the Multiplet Table covering the same span of the periodic

table as each volume of "Atomic Energy Levels", Cir- cular 467. The wavelength range extends from 3000A to shorter waves, since the author's 1945 Multiplet Table, Princeton Univ. Obs. Contr. No. 20; NBS Tech. Note 36 (PB 151395) November 1959, extends from 3000A to longer waves. (The spectra of the rare-earth elements have been omitted from the Ultraviolet Multiplet Table because of the present serious lack of laboratory data. When more work has been done on descriptions and

analyses of these complex spectra, similar tables are planned: i.e. for the lanthanide group of elements, cerium through lutetium (atomic numbers 58 through 71), and the actinide group starting with throium, atomic number 90.) Section 3 of the Ultraviolet Multiplet Table, ac- companies Volume 3 of "Atomic Energy Levels". It includes selected multiplets of 78 spectra of 31 ele- ments in the groups molybdenum through lanthanum

(atomic numbers 42 through 57), and hafnium through radium (atomic numbers 72 through 88). The arrangement

is identical with that in Section 1 and 2. The table

lists in multiplet form the leading lines of selected

spectra, and includes ionization and excitation potentials, and literature references. April 6, 1962. 94 p. Section 4 is a Finding List for Sections 1 and 2 of the

Ultraviolet Multiplet Table. There are 125 spectra of 41 elements, hydrogen through niobium (atomic numbers

1 through 41), represented in the Finding List. The

lines are entered in order of increasing wavelength

starting at 129A. For each line the tabular wavelength,

spectrum, and multiplet number are given. April 6, 1962. 65 p. Section 5 is a Finding List for Section 3 of the Ultra- violet Multiplet Table, described above. It is arranged

similarly to Section 4, with all lines entered in order of increasing wavelength, starting at 355A. For each line, the wavelength, spectrum, and multiplet number are

given. This section concludes Circular 488, it contains

lines from 78 spectra of 31 elements from molybdenum

through lanthanum, and hafnium through radium (atomic numbers 42 through 57; and 72 through 88, respectively).

April 6, 1962. 30 p.

C510, Suppl. 2. Alphabetical index to tables of chemical

kinetics. Homogeneous reactions. This supplement consists of subject and alphabetical indices that have been prepared for users of the original Circular and its printed supplement. August 5, I960.

37 p. (See Mono. 34 and Mono. 34, Vol. 2; these accompany this supplement.) C539, Vol. 10. Standard X-ray diffraction powder patterns,

vol. 10-data for 40 substances, H. E. Swanson, M. I. Cook, E. H. Evans, and

J. H. deGroot

Forty standard X-ray diffraction powder patterns are presented. Twenty-two are to replace thirty-five patterns already given in the X-ray Powder Data File, and eight- een are for substances not previously included. The Xray Powder Data File is a compilation of diffraction patterns from most sources and is used for the identification of unknown crystalline materials by matching

spacing and intensity measurements. In this Circular, comparison is made of all powder diffraction data avail- able for each of the substances reported. The patterns were made with a Geiger counter X-ray diffractometer, using samples of high purity. The ^-values were as- signed Miller indices determined by comparison with calculated interplanar spacings and from space group

considerations. The densities and lattice constants were calculated, and the refractive indices were measured whenever possible. Included are X-ray data for the following forty substances: A1P04 (berlinite), AlP04 , Sb2 03 (natural valentinite), Sb2 03 (synthetic valentinite), Sb204 (cervantite), Sb2 05 , BaC03 , BeCr2 04 , Be2 Ge04 , Ca3 Al2 (Ge04 ) 3 , Ca3 Cr2 (Ge04 ) 3 , Ca3 Cr2(Si04 )3 (uvarovite), Ca3 Ga2 (Ge04) 3 , Ca3 Fe2 (Ge04 ) 3 , Ce2Mg3 (NOs ) 12 -24H2 0, CoAs, (skutterudite), CoAs2 , CoGa204, Co2 Ge04 , CoFeAs„ (safflorite), CoCO,

(sperocobaltite), Cu3(OH)2(C0 3 ) 2 , azurite, Cu2(OH)2(C03 ) (malachite), AuCN, FeAs2 (loellingite), MgGa204 , Mg, Ge04 (cubic), Mg2 Ge04 (orthorhombic), Mg2 Si04 -MgF2 (norbergite), MnSe, NiAs2 (rammelsbergite), NiFe2 04 (trevorite), NiGa2 04 , K2 RuCl6 , K4 Ru2 Cl 10 O-H2 O, SiO,

(cristobalite), Ag2 S, (argentite), a-Na4 P4 012 -4H2 0, TeOa , Daratellurite, Zn2 Ge04 . September 23, I960. 61 p. (For additional information, see Mono. 25, Vols. 1 to 4.)

3.6. MONOGRAPHS

Monographs are usually contributions to the technical

literature which are too lengthy for publication in the Journal of Research. They often provide extensive compilations of information on subjects related to the Bureau's technical program. Until July 1959 most of this type of material was published in the Circular series (page 199). See "Price List of Available Publications," page 396. Mono. 18. Heat treatment and properties of iron and

steel, T. G. Digges and S. J. Rosenberg

This Monograph has been prepared to give an under- standing of heat treatment principally to those unacquainted with this subject. To this end, the basic theoretical and practical principles involved in the heat 199
treatment of iron and steel are presented in simplified

form. October 3, I960 . 40 p. (Supersedes C495).

Mono. 19. Atomic energy levels in crystals, J. L. Prather Discrete energy levels observed within certain crystals

are treated as due to perturbations of the energy levels

of the free ion by an electrostatic field arising from the

crystal lattice. The analytic procedures for determining

the field from the charge configuration are given, and

the resulting fields are classified according to their symmetry. After a general survey of group-theoretical

ideas, the applicable groups are analyzed in detail, and

characters appropriate for both integral and half-integral angular momenta of the free ion are tabulated. These are applied to the determination of the number and type of levels arising from a free ion level with / 5 8. The results

of this analysis are tabulated, as are the selection rules

for electric dipole, magnetic dipole, and electric quadrupole transitions. Calculation of the perturbation matrix elements by the use of Wigner and Racah coefficients is discussed. Examples of the application of these several techniques to specific problems are given. February

24, 1961. 84 p. Mono. 20. Ideal gas thermodynamic functions and isotope exchange functions for the diatomic hydrides, deuterides, and tritides, L. Haar,

A. S. Friedman, and C. W. Beckett This Monograph contains a consistent set of tables of thermodynamic properties of a large number of diatomic

hydrides, deuterides, and tritides, for the ideal gas state

at one atmosphere pressure. In addition to the thermo- dynamic properties of the molecular gases, the tables also include thermodynamic properties for chemical

reactions involving the isotopic exchange of hydrogen. The thermodynamic properties tabulated are the heat

capacity, enthalpy, Gibbs free energy, and entropy. May

29, 1961. 271 p. Mono. 21. Specific heats and enthalpies of technical

solids at low temperatures. A compilation

from the literature, R. J. Corruccini and J.

J. Gniewek

Tables are given of- the specific heat, cp

, and the enthalpy of 28 metals, 3 alloys, 8 other inorganic sub- stances, and 8 organic substances in the temperature

range, 1° to 300° K. October 3, I960. 20 p. Mono. 22. Climatic charts and data of the radio refractive index for the United States and the world, B. R. Bean, J. D. Horn, and A. M. Ozanich,

Jr. The radio refractive index of air, n=l+N-10~6

, is a function of atmospheric pressure, temperature, and humidity and varies in a systematic fashion with climate. Included in this Monograph is a compilation of refractive index data. Data listings made up of observations

from 45 U. S. surface weather stations for 2-hour intervals over an 8-year period are given. Mean values, maxima,

minima, and standard deviations of the refractive index have been calculated and tabulated for these observations. Additionally, mean vertical profiles of the re- fractive index have been prepared for 43 U. S. upper air sounding stations from long-term means of pressure, temperature, and humidity.

Earlier studies of refractive index climate are assimilated and put into perspective. One such study is an extensive analysis and mapping of the refractive index

climate of the United States. A worldwide radio refractive index climatology is developed based upon monthly mean observations of pressure, temperature, and humidity. An important finding of these climatological investi- gations is the strong correlation of with height. A

reduced-to-sea-level value of the index, termed N is used to eliminate this systematic height dependence. The surface value of N, N s , may be estimated four to five times more accurately from charts of N, NQ than from

similar-sized charts of N s itself. From climatic charts of Na, Ns may be estimated at any

given location in the United States throughout the day

during every season. In addition detailed annual and

diurnal cycles, as well as 8-year cumulative probability

distributions, are given for 12 representative U. S. stations. On a worldwide basis, charts of mean Na ate presented

for both summer and winter season. November 25, I960. 178 p. Mono. 23. Amplitute-probability distributions - for atmospheric radio noise, W. Q. Crichlow, Q. D. Spaulding, C. J. Roubique, and R. T. Disney

Families of amplitude-probability distribution curves

are presented in a form such that by using three statistical parameters of atmospheric radio noise, of the type published by the National Bureau of Standards, the cor- responding amplitude-probability distribution may be- readily chosen. Typical values of these parameters are given. November 4, I960. 22 p. Mono. 24. A spectrophotoraetric atlas of the spectrum of CH from 3000 A to 5000 A, A. M. Bass and

H. P. Broida The near ultraviolet and visible emission spectrum of CH was recorded and presented in the form of a spectro- photometric atlas. The spectrum was recorded photoelectrically from an acetylene-oxygen flame in the region 4900 to 3000 A by use of a high-resolution grating monochromator. Each of the lines in the CH spectrum is identified. February 14, 1961. 20 p. Mono. 25, Sec. 1. Standard X-ray diffraction power patterns. Data for 46 substances, H. E. Swanson,

M. C. Morris, R. Stinchfield, and J. H. deGroot

Forty- six standard X-ray diffraction powder patterns are presented. Fourteen are to replace twelve patterns al- ready given in the X-ray Powder Data File, and thirty- four are for substances not previously included. The

X-ray Powder Data File is a compilation of diffraction patterns from many sources and is used for the identifi- cation of unknown crystalline materials by matching

spacing and intensity measurements. The patterns were 200
made with a Geiger counter X-ray diffractomecer, using samples of high purity. The ^-values were assigned

Miller indices determined by comparison with calculated

interplanar spacings and from space group considerations. The densities and lattice constants were calculated, and

the refractive indices were measured whenever possible. Included are X-ray data for the following forty-six substances: (NH4 )2 0sCl6 , Al2 Si04 (F,OH)2 , topaz, BiF3 , CeCl„ CeV04 , CsCl04 , CsV(S04 ) 2 -12R,0, E^Ga,*

(GaOJ,, EuCl 3 , EuOCl, GdF3 , GdOCl, Gd203 , Ho[(C2Hs ) S04 ] 3 -9H,0, FeAs, LaB03 , LaCl3 , La2 Mg3 (N03 ) 12

- 24H2 0, Li2Mo04 , Li2 0, Li2 W04 , Lu2 03 , Mg2 Al4 Sis Ol8 (lowcordierite), Mg2 Al4 Si5 Ol8 (high-cordierite), 3Mg2 Si04 -MgF2 (humite), NdB03 , NdCl3 , Nd3 Ga2 (Ga04 ) 3

, NiAsS (gersdorffite), NiC03 , NiS, millerite, KH2 As04 , PrCl3 , SmCl3 , SmF3 , Sm3 Ga2 (Ga04 ) 3 , SmOCl, Ag2 C03 , Ag2 0, Na2Mo04 , Na2 W04 , T12 W04 , Yb3 Ga2 (Ga04 )3 , Y3 Ga2(Ga04 ) 3 , YOCl,

Zr(I0 3 ) 4

. March 9, 1962. 56 p. Mono. 25, Sec. 2. Standard X-ray diffraction powder patterns. Data for 37 substances, H. E. Swanson,

M. C. Morris, R. P. Stinchfield, and E. H. Evans

Standard X-ray diffraction powder patterns are pre- sented for the following thrity-seven substances: Al (P03 ) 3 , SbF3 », Ba 3 (As04) 2 *, Ba(Cl04 ) 2 -3H20, Cd(CN)2 *, CdW04 , Cs20sBr6 *, Cs2 0sCl6 *, a-CrP04 , Co[Hg(CNS)J*,

/3-CoS04 , Dy 3 Ga2 (GaO„)3 *, ErMn03 *, Eu 3 Ga2 CGa04 ) 3 *, Gd3 Ga2 (Ga04 ) 3 », Li 3 As04 *, Li 3 P 3 Gy3H2 0*, Li 2 WCy^H20*, Lu 3 Ga2 (Ga04 ),*, LuMn0 3 *, MnW04 (huebnerite), HgF2 *, NiSO4 ,NiW04*, K2 ReCl6 , K2 RuCl s NO*, RbCl04 *, RbI04 * , Ag2 Se04 *, NaCNO*, Na2 WGy2H20, /3-Na4 P4012 -4H 20,

Sr3(As04) 2 *, Tl3As04*, T1C104 *, YAs04 , ZnW04 *. Eleven

are to replace patterns already given in the X-ray Powder

Data File issued by the American Society for Testing and

Materials, and twenty-six patterns indicated by asterisks

are for substances not previously included. The X-ray Powder Data File is a compilation of diffraction patterns

from many sources and is used for the identification of unknown crystalline materials by matching spacing and

intensity measurements. The patterns were made with a Geiger counter X-ray diffractometer, using samples of high purity. When possible, the ^-values were assigned

Miller indices determined by comparison with calculated

interplanar spacings and from space group extinctions. The densities and lattice constants were calculated, and

the refractive indices were measured whenever possible. May 3, 1963 , 46 p. Mono. 25. Sec. 3. Standard x-ray diffraction powder patterns. Data for 51 substances, H. E. Swanson, M. C. Morris, E.H. Evans, and L. Ulmer

Standard x-ray diffraction powderpatterns are presented

for the following fifty-one substances: 3Al2 03 -2Si02 , (mullite); (NH4 ) 2 BeF4 ; NH4 BF4 ; Sb2 Se3 *; Sb2 Te3 *; As

? 03 *, claudetite; BaBr2 -H2 0*; BaSn03 ; BiP04 (monoclinic); BiP04 * (trigonal); BiV04 * (tetragonal); BiV04 * (monoclinic); Bi2 Te3 , (tellurobismuthite); Bi2 03 , (bismite); Cd(C10„)2 -6H2 0*; CdS04 ; CdTe; Ca5 F(P04 ) 3 , (fluorapatite); CeNbTi06 *. (eschynite); Cs2 Cr04 *; CsF; CoSiF6

- 6H O*; Co(C10„)2 -6H2 0*; CuS04 , (chalcocyanite); DyAs04 *; ErAs04 *; EuAs04 *; GaAs*; HoAs04 *; InAs; LaAs04 *; LaNbTi06 *; Li 3 P04 , (lithiophosphate) low form; Li3 P04 high form; MgNH4 P04 -6H2 0, (struvite); KC103 ; KLiS04 *; K3 Cr08 *; K2 Zn2 V10 O28

- 16H2 Q* ; Rb2 Cr04 *;

AgSbTe2 *

; NaMg3 Al6 B3 Si6 027 (OH)4 *, dravite; Na3 P3 Gy

Na3 P 3 09 -H2 0; SnF2 *; SrO-B2 03 *; TbAs04 *; TlCr04 *; TmAs04 *; Ti02 , brookite; and ZnTe. Twenty-one are to replace patterns already given in the X-ray Powder Data

File issued by the American Society for Testing and Materials, and thirty patterns indicated by asterisks are for substances not previously included. The patterns were made with a Geiger counter x-ray diffractometer, using samples of high purity. When possible, the lvalues

were assigned Miller indices determined by comparison

with calculated interplanar spacings and from space group

extinctions. The densities and lattice constants were

calculated, and the refractive indices were measured whenever possible. July 31, 1964. 64 p. Mono. 25, Sec. 4. Standard x-ray diffraction powder patterns. Data for 103 substances, H. E. Swanson, M. C. Morris, and E. H. Evans

Standard x-ray diffraction powder data are presented

for 103 substances. Thirty-two of these patterns repre- sent experimental data and 71 are calculated. Ten ex- perimental patterns replace eleven cards already in the X-ray Powder Diffraction File published by the American

Society for Testing and Materials; twenty-two experi- mental patterns and seventy-one calculated patterns are

for substances not previously included in the File. The

experimental x-ray powder diffraction patterns were made

with a Geiger counter x-ray diffractometer, using samples

of high purity. All ^-values were assigned Miller in- dices determined by comparison with theoretical inter- planar spacings and from space group extinctions. The

densities and lattice constants were calculated, and the refractive indices were measured whenever possible. The calculated x-ray powder diffraction patterns were

obtained from single crystal structure data. The reported peak height intensities for calculated patterns were converted from integrated intensities. Accurate cell determination measurements for the in- ternal standards were obtained by using a flat-plate back

reflection focusing camera. Key Words: Standard, x-ray, diffraction, powder, patterns,

crystal, structure, measurements, lattice, constants. June 28, 1966. 83 p. Mono.- 26. Development of high-temperature strain gages,

J. W. Pitts and D. G. Moore A summary is presented of a research program aimed

at the improvement of high-temperature strain gages of

the electric resistance type. Potential ceramic and

metal components were evaluated and a gage was de- vised that was based on these evaluations. This gage (NBS 5B) was flexible and easy to install; however, it lacked resistance stability at higher temperatures. In an attempt to minimize this deficiency, ceramic cements

were developed that showed greater electrical resistivity than had been previously observed in the range 800 to 1,800 °F; also, a technique was devised for increasing

the resistance to ground by applying a fired-on ceramic

coating to the grid of a specially developed unbacked

gage. A study was made of the cause of the erratic response

of cemented gages that had not been preheated prior to 201
use. There were strong indications that the erratic response was caused mostly by the rapid decrease in resistance that accompanied structural changes in the cement. March 17, 1961. 20 p. Mono. 27. Bibliography of temperature measurement,

January 1953 to Jurie I960, C. Halpern and

R. J. Moffat There are presented more than 500 references to the

field of temperature measurement. These references were collected from two general sources: Scientific and

technical literature and government reports. The period covered is from 1953 to June I960, with some from

earlier dates. For convenience of the user, the refer- ences are divided into a number of categories based on

the type of instrument used. Some references to calibration of instruments and to scientific theories, on which

temperature measurement is based, are also presented.

April 6, 1961. 13 p. Mono. 27, Suppl. 1. Bibliography of temperature measurement, July I960 to December 1962, C. Halpem

There are presented in this supplement to NBS Monograph 27, "Bibliography of Temperature Measurement, January 1953 to June I960" issued April 6, 1961, about 700

additional references to the field of temperature measurement. The period covered is from July I960 to December

1962 with some earlier references which came to our

attention. The arrangement of material is die same as in Monograph 27, and the journal abbreviations used are those employed in Chemical Abstracts. September 13, 1963- 14 p. Mono. 28. Causes of variation in chemical analyses and

physical tests of portland cement, B. L. Bean and J. R. Dise

Variations in testing that could lead to the rejection

of a material fully conforming to specification require- ments, or the acceptance of a material with undesirable chemical or physical properties, are apparent in the results reported by laboratories participating in comparative tests of portland cements. Many of the causes for variation in chemical analyses and physical test results are listed in this discussion, and remedies for some of

the more frequently encountered defi ciencies in apparatus and methods are suggested. Particular consideration

is given to problems which do not seem to have been

covered in sufficient detail in previous discussions of cement testing procedures. Literature references are given for additional information. April 27, 1961. 24 p. Mono. 29. Thermal expansion of technical solids at low

temperatures. A compilation from the

literature, R. J. Corruccini and J. J. Gniewek

Tables are given of the linear contraction relative to 293 °K, (L„3 —Lt)/L 2 , 3

, and the linear expansion

coefficient, dL/L 293dT, of thirty elements, forty-five alloys, twenty-two other inorganic substances and twenty

plastics and elastomers in the temperature range, 0 to 300 °K. May 19, 1961. 22 p.

Mono. 30. Corrected optical pyrometer readings, D. E. Poland, J. W. Green, and J. L. Margrave The table of corrected optical pyrometer readings enables optical pyrometer users to convert observed

temperature immediately to the true temperature, if the effective emissivity of the material being observed is known. The table gives observed temperatures from 1,000 to 3,000 °K in increments of 5 degrees, from 3,000

to 5,000 °K in increments of 10 degrees, from 5,000 to 10,000 °K in increments of 50 degrees, and from 10,000

to 39,900 °K in increments of 100 degrees. For these,

true temperatures are tabulated for 49 emissivities rang- ing from 0.02 to 0.98 in increments of 0.02. These cal- culations were made on a 650 electronic computer using Planck's law, and the value C2=1.438 cm deg for the radiation constant. April 21, 1961. 74 p. Mono. 31- Capacities of stacks in sanitary drainage systems for buildings, R. S. Wyly and H. N. Eaton Some of the important results obtained in investigations of capacities of plumbing stacks in test systems

at the National Bureau of Standards and elsewhere are discussed. Data are shown from experiments on the flow of water and air in such systems, and analyses of

certain flow phenomena are given. Methods are shown

for applying the results of research in hydraulics and

pneumatics to the preparation of loading tables (for drainage and vent stacks) suitable for use in plumbing

codes. The need for additional research in further improvement of plumbing codes is discussed. July 3, 1961. 52 p. Mono. 32. Tables of spectral-line intensities, Pt. I, Arranged by elements, and Pt. II, Arranged

by wavelengths, W. F. Meggers, C. H.

Corliss, and B. F. Scribner

The, relative intensities, or radiant powers, of 39,000

spectral lines with wavelengths between 2000 and 9000 Angstroms have been determined on a uniform energy

scale for seventy chemical elements. This was done

by mixing 0.1 atomic percent of each element in powered

copper, pressing the power-mixture to form solid elec- trodes which were burned in a 10 ampere, 220 volt direct-current arc, and photographing the spectra with

a stigmatic concave grating while a step sector was

rotating in front of the slit. The sectored spectrograms

facilitated the estimation of intensities of all element

lines relative to copper lines which were then calibrated on an energy scale provided by standardized lamps, and

all estimated line intensities were finally adjusted to

fit this calibration. Comparisons with other intensity measurements in individual spectra indicate that the National Bureau of Standards spectral-line intensities may have average errors of 20 percent, but first of all they provide uniform quantitative values for the seventy chemical elements commonly determined by spectro- chemists. These data are presented by element in part

I, and all 39,000 observed lines are given in order of wavelength in part II. Pt. I, December 29, 1961. 486 p.; Pt. II, October 2, 1961. 281 p. 202
Mono. 33. An experimental study of phase

line-of-sight microwave transmissions,

K. A. Norton, J. W. Herbstreit, H. B. Janes,

K. O. Romberg, C. F. Peterson, A. F. Barghausen, W. E. Johnson, P. I. Wells, M. C. Thompson, Jr., M. J. Vetter, and

A. W. Kirkpatrick During 1956 an experiment was conducted at Maui, Hawaii, to study the time variations in the phase of

arrival of microwave signals propagated over a 15-mile

line-of-sight path and the time variations in the phase

difference of signals originating at a common antenna and received at two points on a horizontal baseline normal to the propagation path. These time variations

are analyzed in terms of their serial correlation functions and power density spectra for different times of day, and

for several baseline lengths ranging from 2.2 to 4,800

feet. The slope of a power spectra and the total variance

of phase difference variations are shown to be dependent upon baseline length. In some instances there was

evidence of a diurnal cycle in total variance of both phase and refractive index, with larger variances during

the day time, but in other instances this diurnal effect was not detectable. The slope of the phase spectra appeared to be independent of time of day or meteorological conditions. The long-term variations in single- path phase were well correlated with variations in the mean value of refractive index measured at 5 points along the path. November 1, 1961. 90 p.

Mono. 34. Tables of chemical kinetics. Homogeneous

(Supplementary Tables). A description of these Tables and definition of the terms and abbreviations used may be found in the intro- duction to the 1951 publication (Circular 510). A brief description of the method used in compiling these tables and the limitation of coverage is given in the preface

to Supplement 1 (Circular 510, Supplement). A description of the numbering system used in classifying reactions for the tables is given in Supplement 2 (Circular

510, Supplement 2). This publication contains information pertaining to Substitution, Exchange and Elimination

reaction types. It is not complete as still more material

falling in these groups is being prepared. The amount

of kinetic data to be studied made it seem advisable to present all the material completed to date without further delay. The data on each section gives the year and month to which the literature has been surveyed. Sep- tember 15, 1961. 459 p.

Mono. 34, Vol. 2. Tables of chemical kinetics. Homogeneous reactions. (Supplementary Tables)!

pertaining to This publication contains informatic substitution, exchange, and elimination reaction types and extends the material on these reaction types found

in the Monograph 34, Volume 1. July 1, 1964. 228 p. (This Monograph accompanies C510, Supplements 1 and

2, and Monograph 34, Volume 1.)

Mono. 35. Bibliography and index on vacuum and low

pressure measurement, W. G. Brombacher The bibliography contains 1538 references, of which

52 are on books. About 550 of the periodical references

are specifically on pressure measurement including

both vacuum gages and micromanometers. The balance

are on vacuum technology, including adsorption, degassing, vacuum pumps, controlled gas leaks, valves, seals and vacuum systems, all of which bear on the technique of vacuum measurement. The indices consist

of an author index and an index of the subject matter

of the listed references. November 10, 1961. 102 p. Mono. 36. Effect of mortar properties on strength of masonry, C. C. Fishburn The physical properties of mortars, the bond strength

of the mortars to masonry units, and the structural strength of concrete masonry and composite masonry

walls containing the mortars are discussed and compared.

All of the mortars were tempered to as wet a consistency

as could be conveniently handled by the mason. The compressive strength of the walls increased, in general, with the compressive strength of the mortar. The racking and flexural strengths of the walls increased

with the bond strength of the mortar. The strength of bond test specimens tended to increase with the compressive strength of the wet consistency mortars that were used. However, bond strength appeared to be the dominant factor affecting the racking and flexural strength

of the walls. Increase in both bond strength and wall

strength with compressive strength of the mortar was

not proportional to the relative compressive strengths

of the type N and type S mortars. The stiffness of walls subjected to compressive and

flexural loads increased with the bond and compressive

strength of the mortars. However, the stiffness of walls subjected to flexural loads appeared to be more dependent

upon the number of bed joints in the tensile face and on

their extension in bond than upon the bending strains

in the masonry materials. November 21, 1961. 45 p. Moi . 37. International practical temperature scale of 1948, text revision of I960, H. F. Stimson The L 1 Practical Temperature Scale of 1948 is a text revision of the International Temperature

Scale of 1948, the numerical values of temperatures remaining the same. The adjective "Practical" was

added to the name by the International Committee on Weights and Measures. The scale continues to be based

upon six fixed and reproducible equilibrium temperatures

to which values have been assigned, and upon the same

interpolation formulas relating temperatures to the indications of specified measuring instruments. Some

changes have been made in the text to make the scale more reproducible than its predecessor. The triple point

of water, with the value 0.01 °C replaces the former ice point as a defining fixed point of the scale. It is also recommended that the zinc point, with the value 419.505 °C, be used instead of the sulfur point. The

ndations include new information that has

ivailable since 1948. September 8, 1961. 8 p. 203
Mono. 38. Radiation patterns in the lower ionosphere and Fresnel zones for elevated antennas

over a spherical earth, R. G. Merrill and

W. V. Mansfield Ground reflection interference patterns in the lower

ionosphere have been computed for elevated antennas

over a spherical earth. The computations incorporated

parallax, tropospheric refraction and defocusing, spherical divergence, and near-horizon diffraction. The

following antenna siting parameters for VHF scatter propagation were computed from the patterns:

1. Antenna height and elevation angle for placing the maximum of the first lobe at the path midpoint.

2. Distances from the antenna to the edges and to the quarter-wave contour of the first Fresnel zone on

the earth's surface.

3. Information for determining the effects of obstacles

located in the first Fresnel zone. April 2, 1962. 128 p. Mono. 39- Calibration procedures for direct-current resistance apparatus, P. P. B. Brooks The equipment and procedures used at NBS for the pre- cise measurement of d-c resistance are explained in detail. The specific application of these procedures to the calibration of bridges and potentiometers is ex- plained. It is expected that this paper will be of considerable help to the many company and governmental

standardizing laboratories now being established. March

1, 1962. 53 p. Mono. 40. Thermocouple materials, F. R. Caldwell Thermocouple materials are considered that are used

primarily as immersion temperature sensors in the range

from 0 °C up. Included are the conventional thermo- couples that have survived since the beginnings of the

art of thermoelectric temperature measurement, newer

noble metal thermocouples, and thermocouples of re- fractory metals for use in the extreme range for immersed

sensors. Thermocouples for thermoelectric generators

are not considered, nor are the types commonly used

chiefly in radiation receivers such as those containing

antimony, bismuth, and their alloys. Because of the wide use and increasing popularity of cerarnic-packed thermocouples in metal sheaths, they are included. Limitations of the thermocouple wires are given as to range, stability, environment including atmosphere, magnitude of thermoelectric emf, and accuracy of commercially available materials of standard and extra

quality. In addition, properties of the separate elements

that are pertinent to the selection or use of thermo- couples have been compiled. Among these are: chemical behavior, mechanical properties, specific heat, density, thermal conductivity, thermal coefficient of expansion, emissivity, electrical resistivity, and magnetic and catalytic properties.

In the case of the ceramic-packed thermocouples the following properties are presented: temperature range

of the sheath, mechanical properties of the sheath, kinds of packed insulation, resistance between thermo- couple wires and between wires and sheath, minimum

bending radius of the packed stock, gas-tightness of the packed insulation, and types of measuring junctions

available, i.e., grounded, ungrounded, bare, totally enclosed, stagnation mounting, etc. Not all of the above information is presented for all thermocouples, but all that is readily available in the general literature, catalogs, and by private communication is included. Limitations on use of thermocouples

normally are given in the text, and properties of the materials generally are presented in tables. March 1, 1962. 43 p. Mono. 41. Theory and methods of optical pyrometry,

H. J. Kostkowski and R. D. Lee A detailed review of the theoretical methods of optical pyrometry and the application of these methods at the National Bureau of Standards in realizing, maintaining and distributing the International Practical Temperature

Scale above 1063 °C is presented. In the theoretical presentation, the concepts of effective and mean effective wavelengths are introduced, and various equations

relating these parameters to each other and other physical quantities are derived. The important features of precision visual optical pyrometers are discussed and a number of blackbody sources and tungsten strip lamps

described. Detailed experimental procedures and results

of primary and secondary calibrations of optical pyro- meters at NBS are given. Finally, recommendations for achieving high precision and accuracy and the funda- mental limitations in visual optical pyrometry are pre- sented. March 1, 1962. 28 p. Mono. 42. Structure shielding against fallout radiation from nuclear weapons, L. V. Spencer The theory of structure shielding from fallout gamma

radiation is developed to the point of applications to elementary structure types. Examples discussed in the

text include the density interface, foxhole, shielded

foxhole or basement, light superstructure, vertical wall, blockhouse, vents, compartmentalization effects, and mazes. A large number of engineering charts and graphs

are presented for engineering calculations, including many obtained from angular distributions of the exposure

dose. Results are given for a fission spectrum, and for Co60 and Csm sources. This information has been ob- tained almost completely by machine calculations uti- lizing basic cross section data. A number of sources of experimental data are mentioned, but detailed compari- sons widi experiment are not included. June 1, 1962. 134 F Mono. 43. Vol. 1 and 2. Chemistry of cement. Pro- ceedings of the Fourth International Symposium. This two-volume Monograph contains the complete texts

of all papers given at the Fourth Internal Symposium on

the Chemistry of Cement, held in Washington, D. C,

October 2-7, I960. The publication represents one of the most complete reference works available on the subject, and presents the latest information in most of the fields of cement chemistry research. Topics covered, divided according to session titles: Volume 1, Chemistry of

clinker, chemistry of hydration of cement compounds, and

chemistry of hydration of portland cement; Volume II,

2 04
Properties of cement paste and concrete destructive processes in concrete, chemical additions and admixtures, and special cements. Volume I, August 31, 1962. 575

p and Volume II, September 27, 1962. 1125 p. Mono. 44. Effect of exposure site on weather resistance

of porcelain enamels exposed for three years, D. G. Moore and A. Potter An exposure test of porcelain-enameled steel and aluminum specimens is being conducted jointly by the Porcelain Enamel Institute and the National Bureau of. Standards. The exposure sites are Dallas, Tex.; Los

Angeles, Calif.; New Orleans, La.; Pittsburgh, Pa.; Washington, D.C.; and two sites at Kure Beach, N.C. The present report gives the results of the third-year inspection. Changes in gloss and color were taken as

criteria of weathering. Based on averages for all enamels, the 80-ft site at Kure Beach caused the greatest change in gloss and color, while the conditions at Dallas, Los Angeles, and New Orleans caused the least change. The conditions at Washington, Pittsburgh, and

the second Kure Beach site (800 ft from the ocean) were

of intermediate severity. Comparison of the gloss and

color changes with data obtained by the National Air Sampling Network indicated that air pollution by acidic contaminants was a factor in site severity. A direct relation existed between acid resistance and

weather resistance. This relation was apparent, however, only when averages were considered. There were

individual exceptions within groups of enamels of the same general type. In addition, enamels of different types, such as aluminum and steel enamels, having the same acid resistance (citric acid spot test) did not

necessarily show the same weather resistance. Further, some red and yellow enamels with good acid resistance showed poor color stability. It was found, however, that

this poor stability could be predicted by a specially developed cupric sulfate test. As a group, the regular glossy enamels for steel showed the best weather resistance among the various

types tested. April 10, 1962. 13 p- Mono. 45- Fire tests of precast cellular concrete floors and roofs, J. V. Ryan and E. W. Bender The results of an investigation of lightweight, precast

cellular concrete planks are given. Fire tests were made

of two floor and five roof specimens made up of these

planks. Variables included density of the cellular concrete, thickness and span of the planks, reinforcement, and cover for the latter. A steel beam encased in blocks

of cellular concrete was included in one floor specimen. The flexural strengths of 14 individual planks were de- termined. The investigation showed fire endurances up

to 2 hr for 6-in. thick slabs tested under load and up to 4 hr for other slabs not loaded. Estimates were made

of the probable results to be expected for slabs of thick- nesses other than those actually tested. April 12, 1962. 12 p. Mono. 46. Analysis of coaxial two-terminal conical

capacitor, M. C. Selby

Adjustable capacitors having electrodes in the form

of coaxial cones or frustums have been used on rare occasions in the past; but their potential superiority to

other types of capacitors for some important applications have been overlooked. The advantage of this geometry

over cylindrical or disk forms is that the practical ca- pacitance range is several times larger. An example

cites the capacitance ranges of a disk, cylindrical, and

conical type to be 10, 40, and 168 to one, respectively. An approximate equation was derived for this conical

capacitor and close agreement is shown between computed and measured values of capacitance versus elec- trode displacement. Multiple cone and different shape

electrodes are suggested to obtain large values of ca- pacitance with an appreciable saving of space and

further increased range of capacitance. The electric

field is plotted and its construction steps for axial symmetry are given. April 6, 1962. 15 p. Mono. 47. Basic magnetic quantities and the measure- ment of the magnetic properties of materials, R. L. Sanford and I. L. Cooter

This paper gives general information regarding the two

basic quantities, magnetic induction, 8, and magnetizing force, H, and also the magnetic constant Tm (often designated by the symbols v v and Mo). Information is also given regarding the magnetic properties of various

materials and methods and apparatus commonly used in the Magnetic Measurements Section for measuring these

properties by means of reversed direct current or alter- nating currents of low frequency. Magnetic measure- ments peculiar to high frequencies are not discussed. In view of the gradual adoption of the rationalized mksa

system of units, this system is included as well as the classical cgs electromagnetic system. May 21, 1962.

36 p. (Supersedes C456). Mono. 48. Determination of total X-ray beam energy

with a calibrated ionization chamber,

J. S. Pruitt and S. R. Domen

This report describes the use of an air-filled alumi- num-alloy ionization chamber to determine the energy

transported by a bremsstrahlung beam with maximum

photon energy in the range 6 to 170 Mev. The exper- imental calibrations of this chamber over this energy range are given, as well as the results of calibration experiments made with a 250-kv constant-potential X-ray tube and with Cs137 and Co60 gamma-rays. Infor- mation is presented about the change in calibration when the chamber is used widi different experimental

conditions, and when either its dimensions or its alloy composition are changed slightly. This report can be used to construct a replica chamber and to determine

its absolute calibration between 6 and 170 Mev under

a variety of experimental conditions. June 5, 1962.

16 p. Mono. 49- Tables of Einstein functions. Vibrational

contributions to the thermodynamic functions, J. Hilsenrath and G. G. Ziegler Tables are presented for the contribution of a harmonic

oscillator to the free energy function, enthalpy function, entropy, and heat capacity of gases. Dimensionless

values of the Planck-Einstein functions are given as a function of x=hcv/kT for x= 0.0010(.0001) 0.1500(.001)

4.000(.01) 10.00(.2) 16.0. A second table which gives

the contributions in cal/mole °K directly as a function of frequency v, and temperature T, was computed using 205
the values 1.43880 for the second radiation constant

hc/k, and 1.98717 for the universal gas constant R. The

arguments for the latter table are spaces at 10 wave

number intervals from 100 cm

-1

to 4000 cm

-1

. July

12, 1962. 265 p. Mono. 50. Bibliography on atomic transition probabilities, B. M. Glennon and W. L. Wiese A bibliography on atomic transition probabilities is presented. The papers are arranged according to ele- ments and stages of ionization, and the method employed and class of transitions are indicated behind each refer- ence. Only articles on discrete transitions, both per- mitted and forbidden, are listed. Also included is a supplementary list of papers dealing with transition probabilities from a general point of view, a table showing

the availability of numerical material on the individual atoms and ions, and a table of conversion factors. August 1, 1962. 42 p. Mono. 51- Analysis of electric energy usage in Air Force houses equipped with air-to-air heat pumps,

P. R. Achenbach, J. C. Davis, and W. T. Smith An analysis was made of the electric energy usage for

all purposes in 16 sample houses selected from a total of 1,535 houses constructed at Little Rock Air Force Base to domicile Air Force personnel. Of principal

interest was the energy used by the air-to-air heat pumps

installed for all-year air conditioning and the effect of

electric energy used by other appliances on the heating and cooling loads in the houses. The data revealed that the annual energy usage in the 16-house sample averaged

25,300 kilowatt-hours per house, of which approximately

half was used by the heat pump and its auxiliary resis- tance heaters, about one-fourth was used for water

heating, and the remaining one-fourth was used for the

electric range and miscellaneous devices. It was deter- mined that the energy used by appliances, other than the heat pump, which contributed toward heating the house was about half the amount used by the heat pump during

the winter months. An analysis of the demand charts re- vealed that the monthly maximum power demand for the

entire housing area was probably caused by a moderately

high sustained demand in many houses rather than a coincidence of the maximum demands in a smaller number

of houses. The effect of several types of programing devices on the pattern of power demand is discussed.

July 13, 1962. 34 p. Mono. 52. Annotated bibliography on soft X-ray spectroscopy, H. Yakowitz and J. R. Cuthill About 550 references are contained in this bibliography which includes, it is believed, a complete coverage of the

soft X-ray literature since 1950 and through I960. Some

references to earlier work are given but the general review references, listed separately, give an adequate

coverage of the earlier work. The emphasis is on the application of soft X-ray spectroscopy to the study of valence band electronic states

in metals and alloys and therefore the spectral region of 25 to 800 angstroms involving ruled glass grating spectrometers is of principal interest. However, a wealth of data have been gathered, primarily by the Russians, on valence electronic states by means of high energy transi- tions where crystal spectrometers are satisfactory. These

references and any X-ray work leading to the distribution of valence electronic states are included regardless of

the transitions employed.

In addition to soft X-ray data, references on all perti- nent aspects of the apparatus and experimental problems

are included. Also listed separately are references of value in corroborating soft X-ray data with other results, such as energy band calculations.

Subject, author, X-ray band, material, and other indices

are included. June 29, 1962. 109 p. Mono. 53- Experimental transition probabilities for spectral lines of seventy elements. Derived from the NBS tables of spectral-line intensities. C. H. Corliss and W. R. Bozman

Relative intensities of 39,000 spectral lines with wavelengths between 2000 and 9000 angstroms have been

determined on a uniform energy scale for seventy elements. The light source was an arc between copper electrodes

to which a single element was added in the ratio of one

atom of element to 1000 atoms of copper. The temperature of the arc was determined, by comparison of the observed intensities with published relative gf-values,

to be 5100 ± 110 °K. The degree of ionization of eleven elements in the arc was determined by comparison of

intensities in spectra of neutral and ionized atoms with known absolute gf-values. With the aid of Saha's ion- ization equation, the electron density in the arc was

found to be 2.4 x 10 ucm

-3

. The ionization of seventy elements separately added to the arc was then calcu- lated with Saha's equation. A correction was made for diffusion of atoms from the arc stream. With this infor- mation, relative values of gf on a uniform scale can be computed for the 25,000 lines which have been classified. By calibration with known absolute gf-values, the scale is put on an absolute basis. Absolute transition probabilities for 25,000 lines of 112 spectra have been

calculated in this way and the results are tabulated by spectrum. The wavelength in angstroms, energy levels

to the nearest kayser, gA in 10" per second, gf, and log

gf are given for each line. July 20, 1962. 562 p. Mono. 54. Analytical standards for trace elements in petroleum products, H. S. Isbell, R. S. Tipson, J. L. Hague, B. F. Scribner, W. H.

Smith, C. W. R. Wade, and A. Cohen A search has been conducted for stable, oil-soluble, organic compounds of metals (and other elements) for use

in the spectrographic analysis of petroleum products. Compounds having suitable physical properties have

been selected as standards in the determination of the following 24 elements: aluminum, barium, boron, cadmium,

calcium, chromium, cobalt, copper, iron, lead, lithium, magnesium, manganese, mercury, nickel, phosphorus,

potassium, silicon, silver, sodium, strontium, tin, vanadium, and zinc. The compounds have been purified and

analyzed, and are available as certified standards. These stable, oil-soluble standards were selected from over 150 prospective compounds described in the Monograph. Methods are given for preparation of the com- 206
pounds and for the spectrograph^ and chemical analysis

of the chosen standards. Procedures are described for the preparation of stable solutions thereof in petroleum

oils. Xylene, together with 2-ethylhexanoic acid, 6- methyl-2,4-heptanedione, and 2-ethylhexylamine (and

specified mixtures thereof) are used as additives to render the various samples soluble. The resulting solu- tions are all compatible with each other, so that blends

containing a known amount of each element of interest can be prepared as needed. October 1, 1962. 23 p. Mono. 55. NBS viscometer calibrating liquids and capillary tube viscometers, R. C. Hardy Most measurements of viscosity are made with relative viscometers. These instruments must be calibrated with

liquids whose viscosities are known. NBS provides a series of 10 oils for this purpose. Their viscosities range from 0.02 to 450 poises and their temperature

coefficients of viscosity range from 2.1 to 9.4 percent per degree C. When properly stored the oils may remain

usable for from two months to one year but prompt use is recommended. The less viscous oils are more stable. Representative types of glass capillary tube viscometers and their use are discussed briefly. Contrary to common

belief, it is not necessary to calibrate these instruments

at the temperature of use since the temperature coeffi- cients of the instruments are small and correction if necessary can be calculated. Instruments in which the effective volume of charge is not adjusted at the test temperature may require adjustment of their calibration constants to compensate for thermal expansion of the

test liquid. Correction formulas for this and other errors or conditions are presented. December 26, 1962. 22 p. Mono. 56. Systems of electrical units, F. B. Silsbee The various systems of measurement, with their re- spective sets of units, used in the literature on electricity and magnetism are described in detail. Their

historical development is summarized. The manner in which each is derived from either of the two alternative points of view of the experimentalist and the theoretician

is compared and contrasted. The desirability of recog- nizing both points of view in international standardization,

particularly when discussing rationalization, is pointed

out. The present status of the absolute measurements on which all electrical units are based is reported, and

tables are included for the conversion of equations and

numerical values from one system to another. September

20, 1962. 42 p. Mono. 57. Periodicals received in the Washington Library

of the National Bureau of Standards, July 1962, N. J. Hopper

This publication lists alphabetically the periodicals, both American and foreign, that are currently being re- ceived in the Washington (D.C.) Library of the National Bureau of Standards. Approximately 2,000 titles are

cited, together with call numbers indicating the location

of each in the NBS Washington Library. Although this information was compiled primarily for the use of the Bureau's scientific staff, it is also of value to libraries, scientific and technical organizations, and research

workers. November 23, 1962. 34 p. (Supersedes NBS

Circ. 563 and the 1st Suppl. to NBS Circ. 563 now Super- seded by M274).

Mono. 58. Corrosion of steel pilings in soils, M. Romanoff

Steel pilings have been used for many years as structural members of dams, floodwalls, bulkheads, and as load- bearing foundations. While its use is presumably satisfactory, no evaluation of the material after long service has been made. In cooperation with the American Iron and Steel Institute and the U.S. Corps of Engineers, the National Bureau of Standards has undertaken a project

to investigate the extent of corrosion on steel piles after many years of service. Results of inspections made on steel pilings which

have been in service in various underground structures under a wide variety of soil conditions for periods of exposure up to 40 years are presented.

In general, no appreciable corrosion of steel piling was found in undisturbed soil below the water table re- gardless of the soil types or soil properties encountered. Above the water table and in fill soils corrosion was

found to be variable but not serious.

It is indicated that corrosion data previously published

by the National Bureau of Standards on specimens ex- posed under disturbed soil conditions do not apply to pilings which are driven in undisturbed soils. October

24, 1962. 22 p. Mono. 59. Mechanical behavior of crystalline solids (Proceedings of an American Ceramic

Society Symposium, New York City, N. Y.

April 1962). The Symposium was designed to present a review of dislocations and dislocation behavior, and how these are

related to the mechanical properties of ceramic materials. The first paper reviews general ideas relating to strain hardening, recovery, creep, and fracture, and introduces

the concept of dislocations as used to understand these phenomena. The second paper discusses dislocations as

entities in themselves, with particular emphasis on their geometrical aspects. The third paper describes methods

of observing and studying dislocations, with examples

drawn from metals and nonmetals. These first three papers form a background of introduction and general ideas about dislocations. The next two papers are concerned specifically with

properties of ceramic materials, with emphasis on single

crystals. The fourth paper, discusses the mechanism of

fracture and the role played by dislocations in the initia- tion and propagation of fracture. The fifth paper considers the problem of obtaining high strengths, a problem

for which dislocation motion is important but not dominant. The last paper leaves the properties of single

crystals and reviews the ways in which the microstructure

of polycrystalline ceramics influence the mechanical

properties. March 25, 1963, 113 p. Mono. 60. Influence of a sector ground screen on the

field of a vertical antenna, J. R. Wait and

L. C. Walters The field of a short vertical antenna on a homogeneous

ground is shown to be modified by the presence of a

metallic screen. The screen is taken in the form of a

circular disk and a concentric sector. The modification

of the field is expressed in the form of surface integrals 207
over the disk and the sector. Extensive numerical re- sults for these basic integrals are given and a number of applications are illustrated. April 15, 1963. 23 p. Mono. 62. Testing of metal volumetric standards, J. C. Hughes and B. C. Keysar The National Bureau of Standards has for many years

calibrated and certified metal measures which are used

as standards by weights and measures officials and

others in the calibration of instruments for measuring the volumes of fluids. No complete specifications or toler- ances for these standards have ever been published, however, nor have standardized procedures for the cali- bration and use of the liquid measures been available. The information contained in this Monograph should

assist in the purchase of quality instruments and the proper use of the standards in calibrating other measures

for liquids and gases. April 1, 1963- 12 p. Mono. 63. Tensile and impact properties of selected materials from 20 to 300 °K, K. A. Warren and

R. P. Peed

The tensile and impact properties of structural materials were experimentally determined at temperatures

from 20 to 300 °K. Tensile properties of a few materials were also determined at 4 °K. The materials included

forty-two commercial alloys of iron, aluminum, titanium, copper, nickel, and cobalt, and two metal-bonded car- bides. The properties experimentally determined were

the yield strength, tensile strength, elongation, and re- duction of area, the stress versus strain curve, and the impact energy. The test equipment and procedures are described. The individual data are presented in tables, and the average results are displayed in graphs. June 28, 1963. 51 p. Mono. 64. Refractive indices and densities of aqueous

solutions of invert sugar, C. F. Snyder and

A. T. Hattenburg The refractive indices and densities of aqueous solutions of invert sugar have been determined, at temperatures of 15, 20, 25, and 30°C, for concentrations up to about 82 percent of invert sugar (by weight). From the

results, equations have been derived which relate the refractive index and percent of invert sugar (weight in

air) at each temperature. Other equations relate the absolute density and percent of invert sugar (weight in vacuum) at each temperature. Five-decimal tables giving

the refractive indices and densities of invert sugar solutions containing 1 to 85 percent of sugar are given for each percentage of invert sugar at the four temperatures. June 7, 1963. 6 p. Mono. 65. Reduction of data for piston gage pressure measurements, J. L. Cross

Pressure measurements made with piston gages are affected by gravity, temperature, pressure, and several other variables. For accurate determinations of pressure

the calculations must take these variables into account. A general equation is developed and simplified proce- dures for calculating pressure are illustrated. June 17, 1963. 9 p.

Mono. 66. Electron optical studies of low-pressure gases,

L. Marton, D. C. Schubert, and S. R. Mielczarek This document is the final report of research carried on

in the Electron Physics Section of the National Bureau of Standards during the period from February 1, 1955 to March

of 1962 in developing an electron optical method for the visualization of low-pressure gas flow. The goal of this work was to develop and demonstrate the suitability of electron optical techniques for recording the spatial distribution of gas molecules at fixed times with sufficient accuracy that the velocity distribution could be derived. The work concentrated on the properties of chopped molecular beams of cadmium at extremely low pressures where

the densities of the particles in the molecular beam pulse correspond to a pressure of less than 10—7 Torr. The pro- ject was successful. During the course of this program, equipment was built, methods of operation were developed,

the theory of the electron optical schlieren was developed

in some detail, and ways of efficiently converting the data obtained into velocity distributions of the gas molecule were investigated. August 16, 1963. 37 p. Mono. 67. Methods for the dynamic calibration of pressure

transducers, J. L. Schweppe, L. C. Eichberger,

D. F. Muster, E. L. Michaels, and G. F. Paskusz

This Monograph is designed to assist the practicing engineer faced with the problem of making dynamic measurements and calibrations of the rapidly changing pressures

in missile and space vehicle technology.

In order to calibrate and use dynamic transducers, the practicing engineer needs to be familiar with (1) the characteristic differential equations and their solutions, (2) the methods of analyzing pairs of input and output functions to determine the transfer function and the frequency response curve, (3) the methods of generating precise in- put functions, and (4) the specific methods for using pre- cise experimental measurements to determine the dynamic

characteristics of a particular pressure transducer. December 12, 1963. 104 p. Mono. 68. Compilation of the melting points of the metal

oxides, S. J. Schneider A compilation has been made of die melting points of 70 metal oxides published prior to January 1963. Both

the original melting point and the equivalent value based

on the International Practical Temperature Scale of 1948

are presented. Included in the survey is information on

pertinent experimental details such as the method of temperature measurement, purity, furnace type, and environ- mental conditions. October 10, 1963- 31 p. Mono. 69. Shielding against gamma rays, neutrons, and

electrons from nuclear weapons. A review and

bibliography, J. H. Hubbell and L. V. Spencer The problem of predicting dose rates and of estimating

the effectiveness of shielding from radiations resulting

from nuclear explosions is discussed. A number of exist- ing calculations and supporting experiments regarding die penetration and diffusion of gamma rays, neutrons, and

electrons through air and bulk materials are summarized.

Indications are given of gaps in such input information. 208
A selection of 485 references from the unclassified litera- ture is presented, of which 388 are cataloged as to source geometry and energy, absorber material and configuration, type of data presented, and method of calculation or ex- perimental technique. These cataloged references include

radiation field studies ranging from the point-source

infinite-medium situation up through such complicated

geometries as foxholes, shelters, and conventional structures. The other references are of a general or review

nature or contain input spectral data. February 24, 1964. 36 p. Mono. 70. Vol. I. Microwave spectral tables. Diatomic

molecules, P. F. Wacker, M. Mizushima,

J. D. Petersen, and J. R. Ballard For about 1500 spectral lines of diatomic molecules

observed by coherent radiation techniques, measured

frequencies, assigned molecular species, assigned quan- tum numbers, and newly computed intensities are given. Molecular data, such as rotational constants, dipole moments, and various coupling constants, determined by such techniques, are also Tabulated, as are other molecular constants used in the intensity computations. Ref- erences are given for all included data. For determination of hyperfine spectra, both Casimir's function and

the intensity splitting factor are given for both integral and half-integral quantum numbers J and I, permitting application to additional molecules with unclosed electronic shells and with hyperfine splitting produced by more than one nucleus. December 1, 1964. 144 p. Mono. 70. Vol. II. Microwave Spectral Tables. Line

Strengths of Asymmetric Rotors, P. F. Wacker and M. R. Pratto Line strengths of asymmetric rotors are tabulated as a function of Ray's asymmetry parameter k for rotational quantum numbers J from 0 to 35- Procedures for inter- polation as a function of k and extrapolation to larger J values are discussed. December 15, 1964- 338 p. Mono. 71. Line parameters and computed spectra for water vapor at 2.7 fi, D. M. Gates, R. F. Calfee, D. W. Hansen, and W. S. Benedict The spectral line positions, strengths, and half-widths

of the water vapor spectrum of the v x , 2u2

, and v 3 bands

of the 2.7 nregion are presented for the 2857 - 4444 cm" 1 range. Isotopic lines attributed to the H2 0

17 and H2 018 molecules as well as the "hot line" produced by 030 - 010, 011 - 010, and 110 - 010 transitions are included. Theoretical transmission spectra of atmospheric water

vapor are shown for specific atmospheric conditions. The effect of a triangular slit function applied to the

theoretical transmission is also discussed and displayed

in graphic form. August 3, 1964. 126 p. Mono. 72. Curves of input impedance change due to ground

for dipole antennas, L. E. Volgerand J. L. Noble

Graphs of the change in input impedance of electrically short dipole antennas in the presence of an isotropic and homogeneous ground are presented, considering four types

of antennas: horizontal and vertical, electric and magnetic

dipoles. Curves of the change in both the input resistance and reactance are shown for a wide range of values of the frequency, antenna height above the ground, and electro- magnetic ground constants. January 31, 1964. 47 p. Mono. 73. The NBS standard hygrometer, A. Wexler and

R. W. Hyland A gravimetric hygrometer is described that serves as

the NBS standard instrument for the measurement of the moisture content of gases on an absolute basis in terms

of mixing ratio (mass water vapor/unit mass of dry gas). The National Bureau of Standards and other laboratory reference and working instruments are compared and cali- brated with this instrument. The measuring operation involves the absorption of the water vapor from a water

vapor-gas mixture by a solid desiccant and- the deter- mination of the mass of this water vapor by precision weighing; it also involves the determination of the volume

of the associated gas of known density by counting the

fillings of two calibrated stainless steel cylinders. An

automatic system permits the sampling of the test gas at any desired flow rate up to 2 liters per minute (STP) and

for any desired number of fillings. The instrument pro- vides a value of the mixing ratio averaged over the time

interval of a test. The construction and operation of the instrument is described. Discussions of the tests and calibrations of component parts, and of the sources of errors also are included. An analysis of the random and systematic er- rors effecting the overall accuracy in the determination

of mixing ratio shows that if 0.60 g of water vapor is collected from moist air, then the estimated maximum uncertainty expected for mixing ratios between 27 mg/g and

0.19 mg/g is 12.7 parts in 104

. May 1, 1964. 35 p. Mono. 74. Creep and drying shrinkage of lightweight and

normal-weight concretes, T. W. Reichard A description is given of a series of tests and test results from an investigation of the mechanical properties

of structural-grade lightweight and normal-weight concretes. The major part of the work was planned to obtain comparative values of compressive creep, drying

shrinkage, strengths, and moduli of elasticity for concretes made with 24 lightweight and 5 natural, normal- weight aggregates and having the same nominal strength

at the time the specimens were placed under load. Data are presented from a total of 76 different concretes which show that there is a wide range in values of the mechanical properties of concretes of the same nominal compressive strength. It is shown that relatively high values of creep and drying shrinkage are- not always as- sociated with lightweight concretes and that, in fact, some lightweight concretes have practically the same

mechanical properties as some normal-weight concretes.

In addition to environmental conditions, the two major

factors affecting the creep of concrete appear to be the

ratio of the applied stress to the strength at the time of loading, and the aggregate used. Curing conditions, type

of cement, mix proportions, and several other variables appear to affect the creep chiefly insofar as they affect

the stress -strength ratio. 209
It was observed that the creep at the age of two years can be estimated from the 90-day results with reasonable

accuracy. March 4, 1964. 30 p. Mono. 76. An engineering method for calculating protection afforded by structures against fallout radiation, C. Eisenhauer This report is a discussion of the technical assumptions underlying the methods currently recommended by

the Office of Civil Defense (OCD) for calculating pro- tection afforded by structures against fallout radiation.

It discusses methods for calculating the contributions from radioactive sources on the roof and on the ground

surrounding a simple one-storied building. It shows in detail how each technical chart in the OCD Professional Manual is derived from basic data on radiation penetration developed by Dr. L. V. Spencer. Charts from the Professional Manual and relevant curves from Spencer's work are included in this report in order to make ic self- contained. July 2, 1964. 20 p. Mono. 77. Sound insulation of wall, floor, and door constructions, R. D. Berendt and G. E. Winzer The data obtained at the National Bureau of Standards on the sound insulating properties of building structures

are summarized. The results of the two previous Supple- ments to BMS Report 144 (1955) are included, together

with later results obtained through January 1964. Single

figure ratings, STC and INR, for airborne sound trans- mission and impact sound transmission, respectively, as

well as the octave frequency band spectra of impact

noise, are included as additional information. A brief description of the sound-measuring techniques is given. Consolidated Supplement to BMS 144. (Supersedes Sup- plements 1 and 2 of BMS 144). November 30, 1964. 49 p. Mono. 78. A complete mode sum for LF, VLF, ELF ter- restrial radio wave fields, J. R. Johler and

L. A. Berry Previous pape s about VLF, ELF propagation i n the

earth-i jnosphere waveguide have emphasized the

tics of th ; individual modes. In this pape

phasis is on the total field found by summing all rnodes which contribute appreciably. Solutions are give i and calcuk tions are made for a homogeneous isotropic sphere a homogeneous ionosphere with a constant radial magnetic field irnposed, and an ionosphere with a magnetic field of arbitrary dip angle.

In the isotropic case, one mode is sufficient to de- scribe the field at ELF, but at the upper end of the VLF

band, two or more modes may propagate 7500 km. When a magnetic field is imposed on the ionosphere, three ab- normal modes or fields are generated at the anisotropic boundary. These abnormal modes have little effect on

the total field in the VLF band, but they change the ELF

field appreciably. Indeed, in the absorption region be- tween VLF and ELF, the abnormal modes may become

dominant beyond 1000 km. October 1, 1964. 22 p. Mono. 79- On the statistical theory of electromagnetic waves in a fluctuating medium (II). Mathematical basis of the analogies to quantum

field theory, K. Furutsu Many analogies to quantum field theory are inherent

in the statistical theory of waves. This is due to the

fact that basic equations exist in the latter theory which

correspond closely to the fundamental equations of the former theory; i.e., to the commutation relations and the Heisenberg equation of motion. A probability density

function of waves is introduced here which corresponds

to the probability amplitude function in quantum mechanics. The boundary conditions at infinity for this probability density function are then found to be ex- pressed in the same form as the vacuum boundary conditions in field theory. The theory of the statistical Green's functions and their relationships to the expectation values of the physical variables is also extensively developed, using auxiliary external sources of the wave and of the fluctuating medium. It is found that there exists a one-to-one correspondence between the formalism of Green's functions presented here and that used in field theory. The above correspondence may be

important for a further development of the statistical theory of waves, just as the advanced techniques of

field theory have greatly influenced the development of thermodynamics (or statistical physics). December 7, 1964. 44 p. Mono. 80. Ionospheric radio propagation, K. Davies The purpose of this book is to replace, in part, a pre- vious publication of the National Bureau of Standards

(Circular 462) with the same title. Since the publication

of the earlier work in 1948, the whole subject has under- gone a considerable transformation. This is partly due

to the special geophysical efforts known as the International Geophysical Year (1957-8) and the International Year of the Quiet Sun (1964-5) and to the advent of the Space Age. The scope of the present work has therefore been broadened to include aspects of ionospheric radio propagation which were not treated in the earlier publication. Such topics as electron-layer' production, the geomagnetic field, magneto-ionic theory, and oblique propagation have been expanded with respect to the earlier treatment. On the other hand, such topics as frequency

prediction and atmospheric noise have been less thor- oughly dealt with because they have been well treated in other publications. While the book is devoted largely to the propagation of high-frequency radio waves, two chapters have been included to give a better perspective of the relationship of the high-frequency band to the lower

frequency (LF and VLF) bands and upper (VHF) frequency

band, insofar as propagation characteristics are concerned

This book has been prepared in a form suitable for teaching purposes and should be a valuable reference source for research workers and communications engi- neers who already have some background knowledge of ionospheric radio propagation. April 1, 1965. 470 p. Mono. 81. Tables of electron radial functions and tan- gents of phase shifts for light nuclei (Z= 1 through 10), C. P. Bhalla To facilitate the theoretical analyses of beta-decay experiments in light nuclei electronic radial wave functions, evaluated at the nuclear radius, and tangents of phase-shifts are tabulated for total angular momentum

equal to 1/2 and 3/2. Separate tables for electrons and

positrons are given for ten values of Z, starting from Z

210
equal to one, in steps of unity and for beta momentum

values from 0.1 mc to 4 f.O mc in steps of 0.1 mc. The

nucleus is represented as a sphere with uniform charge

distribution. The nuclear radius, p, is taken to be

1.2A 1/3 10" 13 cm in the major body of these tables. However, additional tables for Z = 6 and Z-l are given

for p=l.M1/3 10"13 cm and p = 1.3-4 1 /3 10" 13 cm. August 6, 1964. 393 p. Mono. 82. Microwave impedance measurements and

standards, R. W. Beatty A survey and discussion of well-known microwave

impedance measurement techniques is presented. The

discussion includes an introduction [l] which emphasizes

basic concepts and reflection coefficient-VSWR relation- ships. Sources of error in the various measurement tech- niques are discussed and methods to reduce errors are presented. The discussion of errors in slotted line and

reflectometer techniques is most thorough. Methods

using rotating loops and resonance lines are included and a brief discussion of microwave impedance standards

is given. August 12, 1965. 3 2 p. Mono. 83- Project FIST. Fault isolation by semiautomatic techniques, G. Shapiro, O. B. Laug, G.J. Rogers, and P.M. Fulcomer, Jr. The method of Fault Isolation by Semi-automatic Techniques developed at the National Bureau of Standards, to which the acronym FIST has been applied, cre- ates a new field of metrology which permits the measurement of the dynamic performance of electronic cir- cuits by unskilled personnel under field operating

conditions. It is a diagnostic tool for rapidly isolating

faults in modularized, non-computer type electronic equipment without removing the modules from the prime

equipment. The system consists of test points and associated

circuitry which are built into the prime equipment, and

a small, hand-carried, general-purpose test instrument. The test points are located on an easily accessible test panel and are arranged in an order which permits rapid checking of the modules in a logical sequence.

Fault isolation is accomplished by testing the dy- namic performance of each module with a test instru- ment which is basically a device for comparing the peakto-peak amplitudes of two periodic voltage waveforms.

Since many circuit properties other than voltage must

be measured, transformation networks are provided to convert the characteristic being measured to a periodic voltage which is within the range of the test instrument. The tests are usually made while the module under

test is performing its normal function with the normal

inputs to the module providing the stimuli for the tests. When this is not possible, a stimulus generator is used

to furnish the necessary signal or signals. These techniques have been reduced to practice. This report describes the hardware required and dis- cusses practical ways in which the necessary circuitry can be built into the prime equipment. The simplicity of

the programming and the speed with which a complex

piece of electronic equipment can be checked are demonstrated. Finally, a prototype test instrument capable of simultaneously testing four characteristics of the module

or of its stimuli is described in detail. September 17, 1964. 71 p.

Mono. 84. Standard cells, their construction, maintenance, and characteristics, W. J. Hamer

This Monograph contains information on the construction, maintenance, and characteristics of standard cells. The effects of temperature, pressure, electric current,

light, shock, and vibration on standard cells are dis- cussed. A history of the realization and maintenance of

the unit of electromotive force is also included. A rec- ord of international comparisons of the unit of electro- motive force is presented as well as information on the constancy of the National Reference Group of Standard

Cells. January 15, 1965- 38 p. Mono. 85. A study of lunar surface radio communication, L. E. Vogler The problem of point-to-point radio communication on

the moon is discussed, and equations and curves are presented to estimate power requirements in lunar communication systems. Assuming a smooth surface, consideration is given to ground wave attenuation over both layered and non-layered grounds, antenna ground losses

in situations where ground screens are impractical, noise

level estimates in the receiving system, and the effects on propagation of possible lunar ionospheres. An ex- ample of the calculation of required power for a particular communication system is given, and further studies are suggested. September 14, 1964. 126 p. Mono. 86. Investigation of the hydraulics of horizontal

drains in plumbing systems, R. S. Wyly

Results are reported from an investigation of the hydraulics of flow in experimental apparatus simulating nominally horizontal simple and branching drains of plumbing systems. The data are correlated with limited

findings in an earlier, unpublished NBS study the results

of which have been utilized in current plumbing codes. The need for further research is pointed out, particularly

in relation to hydraulic performance of drain systems

as affected by steep slopes, drain storage volume, en- ergy losses at stack bases, attenuation of water depths and discharge rates in long drains, and large drain diameters. Analysis yielded equations useful in estimating hydraulic capacities for surge flow or for surge flow super- imposed on steady flow over a range of conditions. Capacity estimates for the large drains are substantially

greater than formerly assumed. The experimental find- ings suggest that through careful design it may be possible to reduce the number of conventional vents extending above plumbing fixtures in small systems such as

those in one- and two-family houses. The results, of interest to writers of plumbing codes and handbooks, have important applications in computation of optimum

plumbing loads on building drains and building sewers,

in terms of actual plumbing fixtures. December 18, 1964. 38 p. Mono. 87. Oxidation of polycyclic, aromatic hydrocarbons. A review of the literature, R. S. Tipson A survey has been made of the literature on the oxi- dation of polycyclic, aromatic hydrocarbons. Informa- 211
don has been assembled on (1) the oxidants effective in the oxidation of such hydrocarbons, (2) the relative re- activity of the hydrocarbons, (3) the conditions under which oxidation proceeds, (4) the chemical mechanisms

involved when such oxidations occur, and (5) the prod- ucts formed. September 17, 1965- 52 p. Mono. 89. Effects of thermal shrinkage on built-up roofing, W. C. Cullen The effects of thermal movement of bituminous built-up

roof membranes are related to some common failures of built-up roofing observed in field exposures. A procedure

for determining the amount of thermal movement of

built-up membranes is described. Data are given for the thermal movement of various bitumens and reinforcing

felts used in the construction of built-up roofs and for the composite membranes over a temperature range of +30 to -30° F. The data obtained are related to field experience and suggestions are presented which will prove beneficial in reducing the incidence of built-up

failure due to thermal movement. March 4, 1965- 6 p. Mono. 90. Calibration of liquid-in-glass thermometers,

J. F. Swindells This Monograph, which supersedes Circular 600, contains information of general interest to both manufacturers and users of liquid-in-glass thermometers, as well as those who wish to calibrate thermometers or submit them to the National Bureau of Standards for calibration. Instructions are provided for applicants requesting cali- bration services, and the techniques and equipment used

in the calibration procedures are described. Important elements of thermometer design are discussed, and factors affecting the use of common types of liquid-in-glass thermometers are included together with tables of toler- ances and reasonably attainable accuracies. The cal- culation of corrections for the temperature of the emergent stem is given in detail for various types of ther- mometers and conditions of use. February 12, 1965.

23 p. (Supersedes NBS Circ. 600). Mono. 91. Automatic indexing. A state-of-the-art re- port, M. E. Stevens A state-of-the-art survey of automatic indexing sys- tems and experiments has been conducted by the Research Information Center and Advisory Service on

Information Processing, Information Technology Division,

Institute for Applied Technology, National Bureau of Standards. Consideration is first given to indexes compiled by or with the aid of machines, including citation indexes. Automatic derivative indexing is exemplified

by key-word-in-context (KWIC) and other word-in-con text techniques. Advantages, disadvantages, and possibilities for modification and improvement are discussed. Experiments in automatic assignment indexing are summarized. Related research efforts in such areas as auto- matic classification and categorization, computer use

of thesauri, statistical association techniques, and lin- guistic data processing are described. A major question

is that of evaluation, particularly in view of evidence of human inter-indexer inconsistency. It is concluded that indexes based on words extracted from text are practical

for many purposes today, and that automatic assignment

indexing and classification experiments show promise

for future progress. March 30, 1965- 220 p.

Mono. 92. Radio meteorology, B. R. Bean and E. J. Dutton This volume brings together the work done in radio meteorology over the past ten years at the National Bureau of Standards' Central Radio Propagation Laboratory (CRPL). This decade has seen the development,

on an international scale, of great emphasis upon the

effects of the lower atmosphere on the propagation of radio waves. The CRPL group has concentrated upon

the refraction of radio waves as well as the refractive index structure of the lower atmosphere on both synoptic and climatic scales. These are the areas of radio meteorology that are treated in this volume, with additional chapters on radio-meteorological parameters and the ab- sorption of radio waves by the various constituents of the lower atmosphere. An effort has been made to in- clude results obtained in other laboratories both in the United States and abroad. March 1, 1966. 431 p- Mono. 93. Spot diagrams for the prediction of lens per- formance from design data, O. N. Stav- roudis and L. E. Sutton This Monograph presents an outline of the methods

used at the National Bureau of Standards to predict the performance of lenses from an analysis of their designs. The technique is based on the use of spot diagrams, which are analogs of star image tests, and makes ex- tensive use of high-speed digital computers. A collection of twenty-one spot diagram analyses is included. September 7, 1965- 96 p. Mono. 94- Thermodynamic and related properties of para- hydrogen from the triple point to 100 3 K at pressures to 340 atmospheres, H. M. Roder,

L. A. Weber, and R. D. Goodwin

Experimental programs on parahydrogen at this laboratory have provided pressure-density-temperature rela- tions and heat capacities at temperatures from 15 to 100°K and at pressures from 2 to 350 atm. The two

types of data have been correlated to yield a consistent

set of functions. The properties tabulated for selected

isobars and isochores are temperature, volume or pressure, the isotherm derivative (dP/dp) T

, the isochore

derivative (dP/dT)^, internal energy, enthalpy, entropy,

the specific heats at constant volume and at constant

pressure, and the velocity of sound. Also presented are

the derived Joule-Thomson inversion curve and some

comparisons with normal hydrogen near 100°K. Key words: density, enthalpy, entropy, equation of

state, fixed points (PVT), hydrogen, Joule-Thompson

data, latent heat, melting curve, parahydrogen, properties of fluids, specific heat, vapor pressure, velocity

of sound. August 10, 1965- 110 p. Mono. 95. A table of radiation characteristics for uni- formly spaced optimum endfire arrays with equal sidelobes, M. T. Ma and D. C. Hyovalti Numerical results, in table form, on the required phases,

the directive gain, the current excitations, the location

of all the sidelobes and nulls, and the beamwidths for uniformly spaced optimum endfire arrays with equal side- lobes are given. A total number of elements of 3 through

15 and then 20, 25, and 30 with varying sidelobe levels 212
of 10, 15 , 20, 25 , 30 , 40, and 50 dB below the main beam

is considered. December 10, 1965- 64 p. Key Words: Theory, antenna array, endfire, optimum,

directive gain, sidelobe, excitation, phase, beamwidth. Mono. 96. Electrical parameters of precision, coaxial,

air-dielectric transmission lines, R. E. Nel- son and M. R. Coryell

Since precision coaxial connectors have become commercially available, precision, coaxial, air-dielectric transmission lines are being widely used as radio fre- quency immittance standards. The evaluation of seven

electrical parameters for four different line sizes, which

are commonly used as standards, are presented in graphic

form. The seven parameters, evaluated as functions of frequency, are inductance per inch, resistance per inch, characteristic impedance magnitude, characteristic im- pedance phase angle, attenuation per inch, phase-shift

per inch, and wavelength. Also included are graphs showing how these parameters vary with changes in the

resistivity of the conductors, the relative dielectric constant of air, and the diameters of the conductors. Key Words: Air-dielectric, coaxial transmission lines, electrical parameters, evaluation, functions

of frequency, graphic presentation, and precision. June 30, 1966. 103 p.

3.7. HANDBOOKS

These are recommended codes of engineering and

industrial practice, including safety codes, developed in cooperation with the national organizations and others concerned. In many cases the recommended requirements

are given official status through their incorporation in local ordinances by State and municipal regulatory bodies. See "Price List of Available Publications", page 396.

H28 (1957) Part III. Screw-thread standards for Federal

Services, 1957. This volume is the third of a series of three into which'

the 1957 edition of NBS Handbook H28 is divided. It in- cludes standards for Acme, Stub Acme, and Buttress

threads, rolled threads for electric lamp holders and lamp

bases, microscope objective and nosepiece threads, sur- veying instrument mounting threads, photographic equip- ment threads, ISO (International Organization for Standardization) metric threads, trial standard for class 5 interference-fit threads, and other miscellaneous threads. Dimensions for standard wrench openings are also in- cluded. Handbook H28 (1944) and the 1950 Supplement thereto are superseded by Parts I, n, and EI of Handbook H28

(1957) and the Federal Specifications listed in appendix

6 of Parti of H28 (1957).

A Supplement to the 1957 Handbook is in preparation,

in order to make available revisions that have been de- veloped subsequent to publication. These pertain pri- marily to the Unified thread standards. October 7, I960. 66 p. 1963 Supplement to Handbook H28 (1957), Parts I, II, III, Screw-thread standards for Federal Services. The 1963 Supplement to Handbook H28 (1957), Parts I, II, and HI of Screw thread standards for Federal Services, revises the Unified screw thread designations to conform

with present practice and to include thread data for additional threads which have been added to the Unified

standard screw thread series. Other recent changes to Parts I, H, and HI are also listed. October 1 5, 1963. 109 p. H44, 2d Ed., 1955 (Corrected through I96I). Specifi- cations, tolerances, and regulations for commercial weighing and measuring devices. The publication, except for the introduction and the appendix, reports the actions of the National Conference

on Weights and Measures. It provides the States with a model regulation on the supervision and control of the devices involved in commercial weights and measures

administration. The specifications, tolerances and regu- lations are developed by the Conference Committee on

Specifications and Tolerances with technical advice and

counsel from the National Bureau of Standards. July

1962. 176 p. (Supersedes H44 2 Ed. 1955, through the updating of all technical requirements to include those adopted by the National Conference on Weights and Measures 1961.) H44, 3d Edition. Specifications, tolerances, and other technical requirements for commercial weighing and measuring devices. See above abstract. October 12, 1965. 172 p. (Supersedes Handb. 44, 2d Ed.) H70. Tabulation of data on microwave tubes, C. P. Marsden, W. J. Keery, and J. K. Moffitt A tabulation of microwave electron tubes with characteristics of each type has been arranged in the form of two major listings, a Numerical Listing in which the tubes are arranged by type number, and a Characteristic Listing in which the tubes are arranged by the kind of

tube, and further ordered on the basis of minimum fre- quency and power. The tabulation is accompanied by a

listing of similar tube types and other manufacturers of

certain types. November 1, 1961. 128 p. H72. Measurement of neutron flux and spectra for physical and biological applications The measurement of neutron flux and spectra is dis-^ cussed, various methods are compared, and results of intercomparisons are given. Methods of measurement are discussed for the emission rate of radioactive neutron

sources, thermal neutron flux, intermediate neutron flux, fast neutron flux, and neutron energy spectra. Neutron

radiation instruments for area survey and personnel 213
monitoring involving flux and spectrum measurements are included. Typical spectra of various neutron sources are shown. July 15, I960. 92 p. H73. Protection against radiations from sealed gamma

sources This is a revision of NBS Handbook 54, "Protection Against Radiations from Radium, Cobalt-60, and Cesium137." This revision brings up to date the recommendations for protection from sealed gamma sources and

brings them into conformance with the recently lowered maximum permissible radiation exposure levels. Also

included in this revision is a new recommendation for procedures to be followed in the event of fire in the vi- cinity of radiation equipment. This is a recommendation of the National Committee on

Radiation Protection and Measurements and was prepared

by the members of Subcommittee 9 dealing with the pro- tection against radiations from radium, cobalt-60, cesium137, and encapsulated sources. July 27, I960. 70 p. (Supersedes H54). H74. Building code requirements for reinforced masonry

This is the first edition of a standard on requirements

for Reinforced Masonry. It is a complete code of minimum

requirements for reinforced masonry construction includ- ing definitions, requirements for materials and structural design, and allowable stresses. This document, prepared

by American Standards Association Sectional Committee A41 under the sponsorship of the National Bureau of Standards is one of a series of related standards being developed by various committees under the jurisdiction of

the Construction Standards Board of the American Stand- ards Association. October 21, I960. 13 p. H75. Measurement of absorbed dose of neutrons, and of mixtures of neutrons and gamma rays This handbook presents a summary of currently avail- able methods for determining energy absorption in matter as a result of its interaction with neutrons or mixtures of neutrons and gamma-rays. A brief review of the funda-- mentals of the interaction of neutrons and gamma-rays

with matter is presented and this is followed with a dis- cussion of methods and applications of dosimetry, useful concepts, and units. This handbook is complementary

to Handbook 72 which considered neutron flux and

neutron spectra measurements. February 3, 1961. 86 p.

H76. Medical X-ray protection up to three -million volts The increasing use of high-energy X-rays in medical

diagnosis and treatment and in industry has presented problems in all phases of radiation protection and shielding. This handbook, a revision of Handbook 60, contains recommendations and data on X-ray protection developed

by the NCRP. The material has been updated to take into account the lowering of the maximum permissible dose in 1958, the recent technical advances in machine design, and the development of new radiological techniques. In- cluded in the handbook are specific rules for medical

fluoroscopic, medical radiographic, dental radiographic,

and therapeutic X-ray installations, and for the fluoro- graphic and mobile medical diagnostic equipment. Tables

are included for each application giving protection re- quirements. Given in the appendixes are computations

for the determination of protective barriers and radiation attenuation curves for lead and concrete. February 9, 1961. 52 p. (Supersedes H20 and H60). H77. Precision measurement and calibration. Volume I. Electricity and electronics; Volume II. Heat and

Mechanics; and Volume HI. Optics, metrology, and radiation This Handbook is a compilation of the more important National Bureau of Standards publications over a period

of years, dealing with precision measurement and the cal- ibration of standards. The publications, originally issued

as circulars, research papers, chapters of books, and

articles in scientific periodicals, were selected for inclu- sion in the Handbook on the basis of their having, in the past, best served the needs of scientists in specialized

fields of measurement. It is intended to serve as a quick

reference source for workers in the field of standards, and also as a textbook and aid to scientists and engineers

in standards laboratories. The list of specific titles in- cluded in each volume is given in the Table of Contents

of that volume. Because the three volumes are sold

separately, the subject index and authors' index are complete and identical in each volume. February 1, 1961.

Vol. I, 840 p.; Vol. II, 965 p.; Vol. Ill, 1036 p.

H78. Report of the International Commission on radio- logical units and measurements (ICRU) 1959 This 1959 report of the International Commission on

Radiological Units and Measurements (ICRU) supersedes,

revises, and brings up-to-date the previous (1956) report these are under study and that the results of this study

will be completed before the next report. January 16, 1961. 90 p. (Supersedes H62). (Superseded by H84

through H89). H79. Stopping powers for use with cavity chambers

This publication presents a critical review of the lit- erature concerning the stopping power ratio that is used

in the interpretation of cavity ionization measurements

in radiation dosimetry. The development of cavity theory is described. A review of the theory and experi- mental information on ranges and stopping powers of charged particles is -made to provide the data necessary

for applying the theories. The information available from

cavity chamber measurements is reviewed and compared

with theory. September 1, 1961. 85 p. H80. A manual of radioactivity procedures This publication consists of a review of radioactivity standardization and measurement procedures with special

reference to radiobiological assays and is written specifically for the use of hospital physicists or those who

are concerned with the establishment of a radiophysics department in'a hospital or medical research institution. November 20, 1961. 159 p. 214
H81. Safety rules for the installation and maintenance of

electric supply and communication lines. Comprising Part 2, the definitions, and the grounding

rules of the sixth edition of the National Electri- cal Safety Code

This Handbook consists of definitions, grounding rules, and Part 2 of the sixth edition of the National Electrical Safety Code, dealing with the construction and mainte- nance of overhead and underground lines, previously pub-, lished as National Bureau of Standards Handbook H32. The present edition of these rules is the result of a re- vision which has been carried out by the Sectional Committee in accordance with the procedure of the American

Standards Association, and the text has been recognized

as an American Standard. This revision serves to aline

the rules with new developments and current practice in the industry. It represents the work of five technical subcommittees over a period of about eight years. Changes were made in approximately one hundred and

fifty rules and definitions. November 1, 1961. 197 p. (Supersedes Handbook H32 and amends in part, Pt. 2, Definitions and the Grounding Rules of Handbooks H30

and H43). H82. Weights and Measures Administration This handbook discusses the broad aspects of regulatory State control over commercial weighing and measuring devices and practices. Part I deals with general factors—law, regulations, departmental organization, and personnel. Part II treats in some detail with mechanical activities—the inspection, testing, sealing,

rejection, adjustment, and repair of commercial devices.

Part III is devoted to supervisory activities such as

investigations, package checking, prosecutions, and the education of equipment users and the public. Part IV

is confined to a consideration of systems of records and report forms. June 22, 1962. 190 p. (Supersedes

H26). H83. Tabulation of data on receiving tubes, C. P. Marsden

and J. K. Moffitt A tabulation of Receiving- Type Electron Tubes with some characteristics of each type has been prepared in the form of two major listings, a Numerical Listing in which the tubes are arranged by type number, and a Characteristic Listing in which the tubes are arranged

by tube type and further ordered on the basis of one or two important parameters. The tabulation is accompanied

by a listing of similar tube types and basing connections

for the listed tubes. May 23, 1963. 130 p. (Supersedes

H68.) H84. Radiation quantities and units. International Commission on radiological units and measure- ments (ICRU) report 10a. This Handbook presents definitions of twenty-three fundamental radiation quantities and units. It resulted

from a three-year study by the Ad Hoc Committee on

Quantities and Units of the ICRU. It includes new names

for certain quantities and clarified definitions for others.

It presents a system of concepts and a set of definitions which is internally consistent and yet of sufficient generality to cover present requirements and such future requirements as can be foreseen. November 14, 1962. 8 p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78.)

H85. Physical aspects of irradiation. International Commission on radiological units and measurements

(ICRU) report 10b. This Handbook deals broadly with the physical aspects

of irradiation with a considerable amount of new material added since the 1959 report. It includes an extensive

discussion of the various techniques for the measure- ment of absorbed dose as well as exposure. Characteristics of radiation instrumentation are covered in some

detail including the more sophisticated work on standards. The section on spectra has been up-dated and a new section added on neutron measurements and standards. Available data for stopping power ratios and the average energy (W) required to produce an ion pair in a gas have been reviewed. On the basis of this review it has been necessary to modify the previous ICRU tables

for these factors. This modification amounts to about

1 or 2 percent change in stopping power ratios and up

to 1 percent in W. March 31, 1964. 106 p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78.) H86. Radioactivity. International Commission on radio- logical units and measurements (ICRU) report 10c. The portions of the Handbook dealing with direct and

relative measurements of radioactivity and the availability and requirements for radioactivity standards (re- vision of 1959 report). The parts dealing with the tech- niques and measurements of radioactivity in hospitals and biological laboratories are revisions of the 1959

report, embracing a review of the developments that have

occurred since that report and bringing up to date the material included. In addition, a new section on low level radioactivity in materials as related to the problems of radiological measurements has been added. This topic is important because of the problems arising from the contamination, or possible contamination, in the last decade

of a great many of the materials used in the construction

of counting equipment, shields, and in the reagent chemicals employed in radioactivity measurements. November 29, 1963. 53 p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78). H87. Clinical dosimetry. International Commission on

radiological units and measurements (ICRU) re- port lOd. Much of the Commission's work on clinical dosimetry

is brought together in this Handbook. Included is an ex- tensive discussion of practical calibration procedures and the determination of dose along the central ray. Depth dose data relative to stationary and moving-field

therapy have been extended as have the conversion data 215
necessary to relate ionization measurements to absorbed

dose. The principal effort has been toward the definition of nomenclature and the indication of methods. While some

examples are given and data are provided for these, in general the reader is referred to other published data. The report considers ways of increasing the accuracy and comparability in clinical dosimetry. The discussion

includes not only the physical aspects of dose measure- ment but also the wider subject of planning treatment in such a way as to deliver the prescribed absorbed dose to a defined "target volume". It also includes comments

upon the common sources of error in clinical dosimetry and discusses the information which should be recorded

during treatment and that which should be reported about

any new treatment technique. Appendites to this report include pertinent material taken from other reports in this series. August 9, 1963. 72 p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78). H88. Radiobiological dosimetry. International Commission on radiological units and measurements

(ICRU) report lOe. This Handbook deals primarily with radiobiological dosimetry, and considers methods of improving the accuracy and intercomparability of absorbed dose measurements in radiobiology. It is in effect a handbook for the experimental radiobiologist. It emphasizes the great importance of planning the experimental work in a way

which makes the dosimetry easier and more accurate and

it illustrates how this can be done. April 30, 1963. 26

p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78.) H89. Methods of evaluating radiological equipment and

materials. International Commission on radio- logical units and measurements (ICRU) report lOf. This Handbook deals with methods of evaluating radio- logical equipment and materials. It includes a revision of the 1959 recommendations on the measurement of focal spots and new sections on grids, image intensifiers and

body section equipment. It is expected that additional

reports dealing with the evaluation of radiological equip- ment and materials will be published in the future. August 23, 1963. 33 p. (This publication supersedes parts of Handbook 78. Handbooks 84 through 89 extend and largely replace H78.) H90. Handbook for CRPL ionospheric predictions based

on numerical methods of mapping, S. M. Ostrow

Central Radio Propagation Laboratory Ionospheric

Predictions Based on Numerical Methods of Mapping

(formerly CRPL-D series), is described. The Gallet- Jones method of numerical mapping, which is the basis

of these predictions, is briefly described. Use of an

electronic computer for applying the predictions is recom- mended. Graphical F2-layer prediction maps, derived

from the numerical predictions, are described in detail. Instructions and auxiliary material are provided for ap- plying the graphical map predictions by manual methods.

Some limitations of the predictions and aspects of iono- spheric radio propagation are discussed briefly. December 21, 1962. 54 -p. H91. Experimental statistics, M. G. Natrella This Handbook contains, in a single volume, a collection of statistical procedures that are useful in the design, development, and testing of materials; the evaluation of equipment performance; and the conduct and in- terpretation of scientific experiments. The book is intended for the user with an engineering background who occasionally needs to use statistical techniques, but who does not have the time or inclination to become an expert on statistical theory or methodology. Each procedure, test, and technique described is illustrated by means of a worked example. The book is arranged in workbook style, with step-by-step instruc- tions for application of the procedure on the left side, and the corresponding step in the numerical example on

the right side. Detailed worksheets are given for the more complicated computational procedures. A comprehensive collection of tables is included. The Handbook is presented in five sections: Section

1, Basic Concepts and Analysis of Measurement Data;

Section 2, Analysis of Enumerative and Classificatory Data; Section 3, Planning and Analysis of Comparative

Experiments; Section 4, entitled Special Topics, and

dealing with a number of important but as yet nonstandard

statistical techniques, and various other special topics; and Section 5, the mathematical tables needed for appli- cation of the procedures given in the first four sections. These are followed by an index covering all five sections. August 1, 1963. 518 p.

H92. Safe handling of radioactive materials This handbook presents recommendations of the National Committee on Radiation Protection and Measurements. It is designed to help the user of radioactive materials to handle radionuclides without exposing himself or others

to doses in excess of maximum permissible limits. It provides background material on the principles of radiation protection and then gives recommendations on personnel, physical safeguards, procedural safeguards, instrumentation, transportation of radioactive material and radioactive waste disposal. March 9, 1964. 107 p. (Supersedes Handb. 42). H93- Safety standard for non-medical X-ray and sealed gamma-ray sources. Part I. General This Handbook is intended to serve as a guide toward

the safe use of X-ray and sealed gamma-ray sources for non-medical purposes and of equipment which emits X-rays

serving no useful purpose. Its main objectives are to reduce needless exposure of persons to radiation and to ensure that no one receives more than the maximum per- missible dose. These objectives are achieved by the use

of appropriate equipment, ample structural shielding and most important, safe operating procedures. X-ray and sealed gamma -ray sources are used extensively in industry for the inspection, testing, and analysis of a wide variety of objects and materials. X-radiation is 216
also emitted as an unwanted by-product from devices such

as electron tubes operating at potentials as low as 10 kv.

It is therefore essential that adequate measures be taken

to protect persons who work with or are near such radiation sources, as well as the general public, against ex- cessive exposure to the radiation. Handbook 93 provides recommended safety standards developed for this field by Sectional Committee Z54,

"Industrial Use of X-Rays and Radiation," of the American

Standards Association, under the sponsorship of the National Bureau of Standards. Its text has been approved

by ASA as an American Standard. In 1946 the Committee

issued American War Standard Z54.1, "Safety Code for the Industrial Use of X-Rays." The present Handbook is a

revision of a part of this standard. January 3, 1963. 60 p.

H94. Examination of weighing equipment, M. W. Jensen

and R. W. Smith This Handbook is primarily directed to the presentation of a coordinated series of step-by-step Examination

Procedure Outlines (EPO's) for weighing equipment, recommended for adoption and use, as minimal require- ments, by weights and measures agencies, commercial

service agencies, weighing equipment owners and operators, and manufacturers of weighing devices. Supporting

information embraces discussions on related topics such

as reference and field standards report forms, tolerances, weighing principles, and elements of scale construction and performance. Extensive weights and measures

tables—basic, interrelation of units, and equivalents— and a list of references for further study are appended. An alphabetical index is supplies. March 1, 1965- 279 p. (Supersedes Handb. 37). H95. United States standard for the colors of signal

lights, F. C. Breckenridge The standard provides in part I basic chromaticity

definitions defining the chromaticities that are considered safe for use as representing the named colors. These are the basis for the selection of the national standard filters and for the tolerances given in part II for duplicating them. The procurement requirements of parts III and IV are based primarily on sets of these

filters in combination with prescribed sources although

provision is also made for procurement under the basic

chromaticity definitions in cases in which it is impracticable to base the procurement on filters. Part V pro- vides guidance in selecting signal colors for new uses, and part VI provides methods for special laboratory

tests and serves as a technical interpretation of the practical tests prescribed in parts III and IV. August 21, 1964. 30 p. H96. Inspection of processed photographic record films

for aging blemishes, C. S. McCamy

Inspections of microfilms have recently revealed blem- ishes which apparently developed 2 to 20 years after the

films were processed. Most of the blemishes are small

spots, usually reddish or yellowish in color, ranging from about 15 to 150 microns across. These blemishes have

been classified on the basis of size, shape, color, and217

character. This publication describes and gives colored

illustrations of the various types, describes the method

of observing them, and recommends sampling procedures

for microfilm inspectors. The cause, the exact mechanism

of formation of the various types, and generally accepted

preventive measures are not as yet known. This publication is intended to promote uniform terminology, inspection, and reporting. January 24, 1964. 11 p. H97. Shielding for high-energy electron accelerator in- stallations This publication is intended to give a summary of the presently available data required to calculate the shield- ing for high-energy, high-intensity electron-accelerator

installations. The report is not intended to present

specific, all-inclusive recommendations since it is not

felt that at the present time the "state of the art" has

progressed to the point where such recommendations are feasible. Rather the publication is aimed at outlining

the present state of our knowledge about the factors governing the shielding required in the vicinity of these

accelerators. The recommendations that are made have

to do primarily with a procedure to be followed in establishing the required amount of shielding. July 1, 1964. 66 p.

H98. Examination of farm milk tanks, M. W. Jensen A manual for State and local weights and measures

officials, describing the devices, testing equipment,

gaging, inspecting and testing procedures, and reporting systems. May 22, 1964. 36 p. H99- Examination of liquefied petroleum gas liquid- measuring devices, M. W. Jensen A manual for State and local weights and measures

officials, describing the devices, testing equipment and

its calibration, inspecting and testing procedures, and a

reporting system. April 23, 1965. 21 p.

H100. Copper wire tables. This Handbook is a revision of the Copper Wire Tables

previously published as NBS Circular 31. It reflects changes in the nominal diameters of gages 45 and smaller and extends the tables to 56 gage. The changed diameters and extended range were established in 1961 by

the Committee on Wires for Electrical Conductors of the American Society for Testing and Materials and were

published as ASTM Standard B258-61. They have also been approved as American Standard C7. 36*1961 by the American Standards Association. To reduce internal inconsistencies, tables 5 through 14 were completely recomputed by the ASTM Committee on Wires for Electrical Conductors. The first edition of Circular 31 was published in 1912

at the request of the American Institute of Electrical Engineers. Subsequent editions appeared in 1914 and

1956. February 21, 1966. 41 p. (Supersedes NBS

Circ. 31).
H101. OMNITAB. A computer program for statistical and

numerical analysis, J. Hilsenrath, G. G. Ziegler, C. G. Messina, P. J. Walsh, and R. J. Herbold This user's manual gives the characteristics and application of a general-purpose interpretive program for the generation of physical and mathematical tables on

the digital computer using FORTRAN. The vocabulary and sentence structure permit (with only a few simple

rules) the translation of a mathematical statement into text understandable both to the user (not necessarily a programmer) and to the machine. The basic vocabulary

of slightly over 250 English words is given. These

cover the arithmetic and mathematical operations such

as ADD, DIVIDE, MULT, SUBTRACT, LOGE, EXP; the elementary and special mathematical functions: SIN, TAN, COSH, TANH, orthogonal polynomials, Bessel

functions, elliptic integrals, etc; and various manipulative operations on columns of numbers and on entire Detailed instructions are given also for applying the program to: matrix calculations, statistical analysis of experimental data, least-squares curve fitting, linear and nonlinear interpolation, numerical differentiation and integration, solutions of systems of equations, and

location of zeros and maxima and minima of algebraic and transcendental functions. Numerous examples are given of applications of the program to scientific calculations covering a wide spectrum of problems encountered in a research and develop- ment organization. Aside from the comprehensive repertoire of mathematical functions and operations, the im- portant features which are stressed are the flexible format-free input and output provisions and curve plot- ting facility. March 4, 1966. 256 p.

3.8. MISCELLANEOUS PUBLICATIONS

As the name implies, this series includes material which, because of its character or because of its size, does not fit into any of the other regular publication

series. Some of these are charts, administrative pamphlets, Annual Reports, Weights and Measures Conference Reports, and other subjects appropriate to the Miscellaneous series. See "Price List of Available Publications", page 396.

M230. Standardization activities in the United States. A descriptive directory, S. F. Booth

This publication provides a descriptive inventory of the work of about 350 American organizations involved in standardization activities. It is significant that standards and good measurement practices are disseminated in this country through the work of these many organizations. This Nation's achievement in technology -particularly in mass production and automation—is due in no small measure to such activities. August 1, I960. 210 p. (Super- sedes M169).

M231. Hydraulic research in the United States, I960, H. K. Middleton Research and development projects being conducted in I960 in hydraulic and hydrologic laboratories of universities and Federal agencies throughout the United States and Canada are briefly described. A list of the contrib- uting laboratories is given. The status of continuing

projects covered by previous issues of the publication is reported upon, as well as on new projects in progress,

the results of completed work are given. References to publications relating to the projects and an extensive

subject index are included. August 5, I960. 190 p. M232. The metric system of measurement An illustrated wall chart showing the interrelationships among the units of the International Metric System of measurement and the relationships between the metric units and the units of measurement, commonly known as the English System, which are in customary use in the United

States. Revised April 1, 1963. 1 chart (Supersedes Misc.

Publ. 3). M233. Units of weight and measure (United States cus- tomary and metric), definitions and tables of equivalents, L. V. Judson The units of length, area, volume, capacity, and mass

in the United States are defined. Tables of interrelation and tables of equivalents for these units in the metric system and in the U. S. customary system are given. All values in the text and in the tables have been revised to be in accord with the Federal Register announcement of July 1, 1959, an announcement entitled "Refinement of Values for the Yard and Pound" in accordance with an agreement among the directors of National Standards Laboratories of English-speaking nations to obtain uniformity

in precise measurements involving the yard and the pound. The long tables were all recomputed on an automatic computer and printer. Material on the status of the metric system in the United States was deleted as not being ger- mane to the main purpose of the publication. The tables showing interrelation (1 to 999 units) between bushels and

hectoliters were deleted. A more complete table (0.01 to 19.99 units) showing equivalents of inches in millimeters has been added. December 20, I960. 62 p. (Supersedes

M214). M234. Household weights and measures The purpose of this card is to present in convenient

form the weights and measures tables most useful for household purposes, together with associated weights and measures information of general household interest. October I960. (Card) 2 p. (Supersedes M39). M235. Report of the 45th National Conference on Weights and Measures, I960 A report of the proceedings of the forty-fifth National Conference on Weights and Measures, held in Washington,

D. C, June 6, 7, 8, 9, and 10, I960, and attended by 218
state, county, and city weights and measures officials. December 16, I960. 159 p.

M236. Standard frequencies and time signals from NBS

stations WWV and WWVH

Detailed descriptions are given of six technical serv- ices broadcast by National Bureau of Standards radio stations WWV and WWVH. The services include 1, standard radio frequencies; 2, standard audio frequencies; 3, standard time intervals; 4, standard musical pitch; 5, time signals; and 6, radio propagation forecasts. Other

domestic and foreign standard frequency and time signal broadcasts are tabulated. December 1, I960. 6 p. M236, 1965 Edition. Services provided by NBS standard frequency stations WWV, WWVH, WWVB, and WWVL

Detailed descriptions are given of eight technical services provided by the National Bureau of Standards

radio stations WWV, WWVH, WWVB, and WWVL. These

services are: 1. Standard radio frequencies; 2. Standard

audio frequencies; 3. Standard musical pitch; 4. Standard

time intervals; 5. Time signals; 6. UT2 corrections;

7. Radio propagation forecasts; and 8. Geophysical

alerts. In order to provide users with the best possible

services, occasional changes in the broadcasting schedules are required. This publication shows the schedules

in effect on January 1, 1965- Annual revisions will be

made. Advance notices of changes occurring between

revisions will be sent to regular users of these services upon request. January 15, 1965- 8 p. (Supersedes the editions of December 1, I960 and July 1, 1961)

M236. 1966 Edition. Services provided by NBS standard

frequency stations WWV, WWVH, WWVB, and WWVL

Detailed descriptions are given of eight technical services provided by the National Bureau of Standards

radio stations WWV, WWVH, WWVB, and WWVL. These

services are: 1. Standard radio frequencies; 2. Standard

audio frequencies; 3. Standard musical pitch; 4. Standard time intervals; 5. Time signals; 6. UT2 corrections;

7. Radio propagation forecasts; and 8. Geophysical

aierts. In order to provide users with the best possible

services, occasional changes in the broadcasting schedules are required. This publication shows the schedules

in effect on January 1, 1966. Annual revisions will be made. Advance notices of changes occurring between

revisions will be sent to regular users of these services upon request. (1966) lip. (Supersedes the editions of December 1, I960, July 1, 1961, and January 15, 1965). M237. Research highlights of the National Bureau of Standards, Annual report I960 This is a summarized illustrated report of the research and development activities of the Bureau in the fields of physics, chemistry, engineering, and mathematics, during

the fiscal year ending June 30, I960. Brief accounts are included relating to projects completed by or in progress

in the Bureau's scientific and technical divisions, including electricity, metrology, heat, chemistry, mechanics,

organic and fibrous materials, metallurgy, mineral products, building research, applied mathematics, data proc- essing systems, atomic physics, instrumentation, cryo- genic engineering, radio propagation, and radio standards. A statement of the Bureau's testing, calibration, and

Standard Sample activities by Division is also included, as well as a review of its technical services and cooperation, both national and international. December I960. 189 p. M238. Hydraulic research in the United States, 1961, H. K. Middleton Research and development projects being conducted in 1961 in hydraulic and hydrologic laboratories of universities and Federal agencies throughout the United States and Canada are briefly described. A list of the contrib- uting laboratories is given. The status of continuing

projects covered by previous issues of the publication

is reported upon, as well as on new projects in progress,

the results of completed work are given. References to publications relating to the projects and an extensive

subject index are included. August 15, 1961. 220 p. M239. Report of the 46th National Conference on Weights and Measures, 1961 A report of the proceedings of the forty-sixth National Conference on Weights and Measures, held in Washington,

D. C, June 12, 13, 14, 15, and 16, 1961, and attended by

state, county, and city weights and measures officials. January 18, 1962. 177 p. M240. Publications of the National Bureau of Standards

July 1, 1957, to June 30, I960, Includes titles of papers published in outside journals 1950 to 1959, B. L. Arnold This catalog presents a complete list of all National Bureau of Standards publications issued between July 1, 1957, and June 30, I960. It also includes papers published by members of the Bureau staff in outside journals from 1950 through 1959. Complete author and subject indexes are provided, as well as complete instructions

for obtaining Bureau publications. April 3, 1961. 391 p. M241. Standard materials. Issued by the National Bureau of Standards. A descriptive list with

prices, A descriptive listing of the various Standard Materials issued by the National Bureau of Standards is given. A

schedule of fees and weights, as well as directions for ordering, is included. Summarized tables of analyses

are presented, to indicate the type of standards of composition presently available. Announcements of new

standards will be made in the Federal Register, in scientific and trade journals, and in the Standard Materials column of the National Bureau of Standards Technical News Bulletin. The current status of the various standards will be indicated by an insert sheet available

from the Bureau. March 12, 1962. 32 p. (Supersedes

Circ. 552, 3d Edition, now Superseded by M260). 219
M242. Research highlights of the National Bureau of Standards, Annual report 1961 This is a summarized illustrated report of the research and development activities of the Bureau, during the fis- cal year ending June 30, 1961. Brief accounts are in- cluded relating to projects completed by or in progress in the Bureau's scientific and technical divisions, including

electricity, metrology, heat, radiation physics, analytical and inorganic chemistry, mechanics, organic and fibrous materials, metallurgy, mineral products, building research, applied mathematics, data processing systems, atomic

physics, instrumentation, physical chemistry, cryogenic

engineering, ionosphere research and propagation, radio propagation engineering, radio standards, radio systems, and upper atmosphere and space physics. A statement of the Bureau's testing, calibration, and

Standard Sample activities by Division is also included, as well as a review of its technical services and cooperation, both national and international. December 1961. 204 p. M243. Index to the Reports of the National Conferences

on Weights and Measures. From the first to the

forty-fifth, 1905 to I960 Over the past 55 years a great deal of information on a wide variety of weights and measures subjects has been

published in the Reports of the National Conference on

Weights and Measures. The present publication is de- signed to aid the users of these Reports in locating information on a specific subject or presented by a particular speaker. It comprises a subject index and an index by speaker for the proceedings of each Conference

from the First, in 1905, through the Forty-fifth, in I960. June 28, 1962. 74 p. (Supersedes Misc. Publ. 203). M244. Report of the 47th National Conference on Weights and Measures, 1962 A report of the proceedings of the forty-seventh National Conference on Weights and Measures, held in Washington, D. C, June 4, 5, 6, 7, and 8, 1962, and

attended by state, county, and city weights and measures

officials. 167 p. M245. Hydraulic research in the United States, 1962, H. K. Middleton Research and development projects being conducted

in 1962 in hydraulic and hydrologic laboratories of uni- versities and Federal agencies throughout the United

States and Canada are briefly described. A list of the contributing laboratories is given. The status of continuing projects covered by previous issues of the publi- cation is reported upon, as well as on new projects in progress, the results of completed work is given. Refer- ences to publications relating to the projects and an

extensive subject index are included. October 26, 1962. 196 p. M246. Research highlights of the National Bureau of Standards, Annual report 1962

This is a summarized, illustrated report of the research and development activities of the Bureau, during the

fiscal year ending June 30, 1962. Brief accounts are included on projects completed or in progress in the Bureau's scientific and technical divisions, including

electricity, metrology, heat, radiation physics, analytical and inorganic chemistry, mechanics, organic and fibrous materials, metallurgy, mineral products, building research, applied mathematics, data processing systems, atomic

physics, instrumentation, physical chemistry, cryogenic

engineering, ionosphere research and propagation, radio propagation engineering, radio standards, radio systems, and upper atmosphere and space physics. A summary of the Bureau's testing, calibration, and

Standard Sample activities by type is also included, as

well as a review of technical cooperative activities, both

national and international. December 1962. 217 p. M247. Weights and measures standards of the United

States - a brief history, L. V. Judson A historical account is given of the standards of weights and measures of the United States from the time

of the American Revolution through the year 1962. Current and historical standards of length and mass now in the possession of the National Bureau of Standards are

listed and described. October 1963. 30 p. (Supersedes

SI 7 and M64). M248. Proceedings of the 1962 standards laboratory conference. This publication constitutes the proceedings of the first national meeting of the National Conference of Standards

Laboratories, which convened in Boulder, Colorado, August 8-10, 1962. The meetings, representing a culmination of the first year's activities of the National Conference of Standards

Laboratories, provided a way for members to exchange

information, and to present and discuss various standards measurement problems and their solution. The Proceedings carries the text of the more than 30 papers presented,

plus transcriptions of discussion panels. Also included

is a report of the business and information session, with

its panel on standards laboratory information dissemination. Papers printed in the Proceedings fall in the following areas of interest: "National Bureau of Standards Service

to Industry," "Error Analysis of Measurement Systems,"

"Corporate Measurement Standards Programs," "Measure- ment Agreement Comparisons among Standardizing Laboratories," and "Calibration Recycle Analysis and Work Load

Control." Two panels, devoted to subjects outside the above areas, were entitled: "NCSL Relations to and Cooperation with Technical Societies," and "Recommended

Practices for Standards Laboratories." August 16, 1963. 254 p. M249. Hydraulic research in the United States, 1963, H. K. Middleton Research and development projects being conducted in 1963 in hydraulic and hydrologic laboratories of universities and Federal agencies throughout the United States and Canada are briefly described. A list of the contrib- uting laboratories is giveri. The status of continuing

projects covered by previous issues of the publication is 220
reported upon, as well as on new projects in progress,

the results of completed work is given. References to publications relating to the projects and an extensive

subject index are included. August 9, 1963. 210 p. M250. Calibration and test services at the National Bureau of Standards This publication is a listing of the numerous calibration and testing services provided to science and industry by the National Bureau of Standards. The Bureau promotes

accuracy and uniformity of measurement through its pro- gram of measurement services, including the calibration and testing of standards and standard instruments. An

up-to-date listing of the Bureau's calibration and test fee schedules was printed in recent issues of the Federal

Register, with a large proportion of the fees being changed

at that time. This publication contains all of this material, but in larger, more legible type, and fully indexed. Besides listing all NBS calibration services and their cost, the publication includes a statement of the Bureau's

statutory functions, testing policy, and routine for securing the Bureau's calibration and test services - from

original request to the reporting and use of test results. November 22, 1963. 103 p. M250, 1965 Edition. Calibration and test services of the National Bureau of Standards This publication contains a descriptive listing, item

by item, of most of the test and calibration work done at the National Bureau of Standards with the respective

fees. The content is fully indexed providing easy ac- cess to the particular test you wish to find. Included

also is information about the Bureau's organization and

statutory functions, plus details of procedures for re- questing tests and samples of the reports supplied. Throughout the text various other publications are mentioned which form a bibliography in measurement tech- niques. October 28, 1965- 135 p. (Supersedes Edition

of November 22, 1963.) M251 . Bibliography on ignition and spark -ignition systems,

G. F. Blackburn Approximately 730 references to books, papers, and

reports are listed on ignition of combustible gaseous

mixtures and ignition apparatus. The ignition of gases

includes ignition by electric sparks and arcs by hot sur- faces. The references on ignition apparatus are for the most part on ignition systems and components for internal- combustion engines, with spark plugs listed separately

from other components. November 22, 1963. 26 p. (Su- persedes Circ. 580). M252. Survey of literature on the safety of residential chimneys and fireplaces, H. Shoub A search was made of recent technical literature on chimneys and fireplaces to determine what information was available on questions concerning their safety from

fire hazard. The survey covered types of construction and materials proposed or currently in use with several types of fuel. The reports included investigations of heat transmission through chimney and fireplace walls,

the effects of thermal shock on flue materials, and the required spacing of combustibles from the heated walls. The bibliography presented contains brief reviews of some

of the works. December 17, 1963. 7 p. M253. Recommended unit prefixes; Defined values and

conversion factors; General physical constants

Wallet-size pocket card listing selected general physical constants recommended by the National Academy of Science-National Research Council and adopted by the National Bureau of Standards. Units are given in both

the centimeter-gram-second system and the International System (MKSA). Reverse side lists unit prefixes recom- mended by the International Committee on Weights and Measures and adopted by the National Bureau of Standards. Also lists defined values and conversion factors for several commonly used measurement units. November 1963-

1 card (both sides). M254. Report of the 48th National Conference on Weights and Measures, 1963 A report of the proceedings of the forty-eighth National Conference on Weights and Measures, held in Washington,

D.C., June 10 through 14, 1963, and attended by state, county, and city weights and measures officials. 143 p. M255. Research highlights of the National Bureau of Standards, Annual report 1963

This is a summarized, illustrated report of the research and development activities of the Bureau, during the fiscal year ending June 30, 1963. Brief accounts are included on projects completed or in progress in the Bureau's

scientific and technical divisions, including electricity, metrology, heat, radiation physics, analytical and inor- ganic chemistry, mechanics, organic and fibrous materials, metallurgy, mineral projects, building research, applied mathematics, data processing systems, atomic physics,

instrumentation, physical chemistry, cryogenic engineering, ionosphere research and propagation, radio propagation engineering, radio standards, radio systems, and

upper atmosphere and space physics. A summary of the Bureau's testing, calibration, and

Standard Sample activities by type is also included, as well as a review of technical cooperative activities, both national and international. December 1963- 246 p. M256. Ellipsometry in the measurement of surfaces and

• thin films. A Symposium on the Ellipsometer and its Use in the Measurement of Surfaces was held at the National Bureau

of Standards in September 1963- This volume contains

19 of the papers included in the program, together with any discussions which followed oral presentation. Topics

covered include historical review, theory, computational

techniques, measurement techniques, and the use of ellipsometry in measuring metal surface oxide films and

organic films. September 15, 1964. 359 p. M257. Microstructure of ceramic materials. Proceedings

of an American Ceramic Society Symposium,

Pittsburgh, Pa., April 27-28, 1963

In the five chapters of this symposium, the first two

are concerned with the geometry of microstructures, how

221
they are specified, and the experimental techniques for their observation. The next two are discussions of the

effect of microstructure on mechanical behavior and on

ferromagnetic properties. The final chapter examines,

in detail, the microstructure of porcelain and its ramifications. This publication is intended to lead toward a more 'uniform description of ceramic microstructure and toward better methods of studying such structure. 106 p. April 6, 1964 M258. Foreign-language and English dictionaries in the physical sciences and engineering: A selected

bibliography 1952 to 1963, T. W. Marton The bibliography lists over 2800 unilingual, bilingual, and polyglot dictionaries, glossaries and encyclopedias

in the physical sciences, engineering and technology published during the past twelve years. The majority of the titles cited have English as the source or target language, or are dictionaries giving definitions in English. The bibliographic entries are arranged in 49 subject classes; within each subject, the entries are listed alphabetically by language, and within each language

group by author. Forty-seven foreign languages are repre- sented in the compilation. Lists of abbreviations and

reference sources, and detailed author, language, and

subject indexes complement the publication. July 24, 1964. 189 p. M259- Selection of camera filters for color photography,

C. S. McCamy. One of the problems facing the serious color photog- rapher—whether he is a hobbyist or a scientist trying to record accurately some physical phenomenon—is matching his color film to the light he is using to take the picture.This chart provides a quick and easy way to select

the right filter for almost any combination of light source and color film. June 26, 1964. 2 p. M260. Standard reference materials. Catelog and price

list of standard materials issued by the National Bureau of Standards A descriptive listing is given of the many different Standard Reference Materials issued by the National Bureau of Standards to calibrate a measurement system,

or to produce scientific data that can be referred to a common base. A schedule of prices and amounts, as well

as directions for ordering, is included. For composition

standards summary tables of analyses are presented, to indicate the type of standards presently available. An- nouncements of new standard reference materials will be made in the Federal Register, in scientific and trade journals, and in the Technical News Bulletin of the National Bureau of Standards. The current status of the various standards will be indicated by an insert sheet

available quarterly from the Bureau. October 1, 1965- 40 p. (Supersedes NBS Misc. Publ. 241.) M260-1. Standard reference materials: Preparation of NBS white cast iron spectrochemical standards, R. E. Michaelis and L. L. Wyman

Several methods have been investigated for the preparation of cast iron spectrochemical standards and a satis- factory procedure has been devised. The method involves

casting the molten metal into a grid type of mold on a massive water-cooled copper plate. The method has been

applied to the preparation of eight NBS white cast iron spectrochemical standards containing a graded concentration range for some 20 elements, of which the follow- ing 10 initially have been certified: C, Mn, P, S, Si, CU,

Ni, Cr, V, and Mo. Details of the planning and preparation are given with particular emphasis on the problems

peculiar to standards for cast materials. June 19, 1964. 31 p. M260-2. Standard reference materials: Preparation of NBS copper-base spectrochemical standards, R. E. Michaelis, L. L. Wyman, and R. Flitsch A procedure has been developed for the preparation of copper alloys in both the chill-cast and wrought forms,

sufficiently uniform in composition and microstructure for calibration and use as standard. samples in spectrochemical analysis. The method involves casting the molten

metal on a massive water-cooled copper plate producing

unidirectional cooling. A large disk casting 27 in. in diameter and about 4 in. high is obtained which is split laterally into two pieces, the lower section providing standards in the chill-cast condition and the upper section material for subsequent fabrication into standards

for the wrought condition. Details of the planning, preparation and testing of the standards material for 21 compositions are given, and application of the samples

in calibration for optical and x-ray spectrochemical

analysis is described. October 15, 1964. 36 p. M260-3. Standard reference materials: metallographic

characterization of an NBS spectrometric lowalloy steel standard, R. E. Michaelis, H. The spectrometric standard steel designated NBS LowAlloy Steel 461 was investigated by means of electron probe microanalysis and quantitative metallographic tech- niques employing a digital computer. Electron probe microanalysis showed the steel to be homogeneous in nickel 'and iron at two to four microns of spatial resolution. The average of all determinations agreed with the

certified values for these elements. Inclusions in the

steel were identified, classified as to size and shape, and counted. Mean free path data on the inclusions were

calculated. The ASTM ferrite grain size number was de- duced as 13.5 for the steel in the unetched condition. From the mean free paths in ferrite and pearlite, it was

found that the steel is structurally homogeneous at a five micron level. It is concluded that the homogeneity level corresponds closely to the grain size of the material. It is further concluded that NBS-461 steel is sufficiently homogeneous that any present microanalytical technique can be carried out with little chance of inaccuracy due

to inhomogeneity. October 22, 1964. 17 p. M260-4. Standard reference materials: sources of in- formation, compiled by J. L. Hague, T. W. Mears and R. E. Michaelis This annotated listing of sources of Standard Reference

Materials is prepared with references to all types of materials used to standardize analytical, physico-chemical

and engineering methods. The range of Standard Refer- 222
ence Materials included runs from high-purity substances

and carefully analyzed metals, alloys and rocks to materials of indefinitely-known composition for standardizing a single phenomenon. February 1965- 18 p. M260-5. Standard reference materials: accuracy of solution x-ray spectrometric analysis of copper- base alloys, R. Alvarez and R. Flitsch X-ray fluorescence spectrometry has been investigated

as an independent method for the analysis of certain major constituents in NBS standard reference materials. The determination of copper and zinc in cartridge and aluminum brass samples which were to be certified as

standard materials, was selected for study. After a pre- liminary analysis, a solution of the unknown and a closely-matched synthetic standard were compared without the use of an internal standard or added control ele- ment. To achieve reliable results, close control of the type and concentration of acid was found necessary and

for cells employing films as windows, the position of the film was critical. The temperature rise of the cell during irradiation was 0.1°C, which did not contribute

significantly to error. Typical coefficients of variation obtained for individual results in a group of 8 runs were

0.3% for copper and 0.4% for zinc. The agreement be- tween chemical and x-ray results was within 0.3% of the amount present for both elements. March 15, 1965-18 p.

M260-6. Standard reference materials: Methods for the chemical analysis of white cast iron standards, J. I. Shultz The procedures described in this publication are those used at the National Bureau of Standards in the analysis

of white cast iron standard reference materials for the ten (10) major elements; namely, carbon, manganese,

phosphorus, sulfur, silicon, copper, nickel, chromium,

vanadium, and molybdenum. Carbon and sulfur are de- termined by combustion; manganese, chromium and vana- dium by titrimetry; phosphorus, copper, and molybdenum

by photometry; and silicon and nickel by gravimetry. These procedures, which are slight modifications of well- established and previously published methods, were se- lected for their accuracy and dependability. July 16, 1965- 62 p. M260-7. Standard reference materials: Methods for the chemical analysis of NBS copper-base spectrochemical standards, R. K. Bell The methods for chemical analysis described in this publication are those used in the laboratories of the National Bureau of Standards for the determination of the various constituents of 21 NBS copper-base spectro- chemical standards. The methods cover procedures for the analysis of 7 principal standard alloys known as

cartridge brass, free-cutting brass, naval brass, red

brass, gilding metal, commercial bronze, and aluminum

brass of nominal, high, and low composition. The meth- ods are selected or designed primarily for accuracy

rather than for speed. References are listed for additional information on chemical analysis of copper-base

alloys. October 25, 1965- 99 p.

M260-8. Standard reference materials: Analysis of uranium concentrates at the National Bureau

of Standards, M. S. Richmond NBS experiences with the problems of assaying uranium

concentrates are described. Umpire determinations of uranium were performed on several thousands of ore concentrates from world-wide sources. Contributions were made to the resolution ot the sampling base line problem. Also, it was demonstrated that the standard U3 Os , NBS No. 950a, provides the over-all standard necessary

for precise assay of uranium materials. A comprehensive

analytical procedure applicable to all types of uranium

concentrates is presented. Key Words: analytical procedure, assay, ore concentrates, sampling base line, standard U3 08 , umpire deter- minations, uranium concentrates. December 1, 1965- 96 p. M260-9. Standard reference materials: Half lives of materials used in the preparation of standard

reference materials of nineteen radioactive nuclides issued by the National Bureau of Standards, S. C. Anspach, L. M. Cavallo,

S. B. Garfinkel, J. M. R. Hutchinson, and

C. N. Smith Values are given for the half lives of materials used

in the preparation of standard samples of Na22

, Ca4S

, Sc46

, Mn54, Co57

, Co60, Zn65, Kr85, Sr85

, Sr89

, Sr

90

, Y

88

, Nb95

, I 125, Ce139

, Ce 141

, Pm147, Hg203, Tl 204

, issued by the National Bureau of Standards. Instrumentation, source

preparation, and the determination of impurities are also discussed. Key Words: Half lives, calcium-45, cerium-139, cerium141, cobalt-57, cobalt-60, iodine-125, krypton-85, manganese-54, mercury-203, niobium-95, promethium-147, scandium-46, sodium-22, strontium-85 , strontium-89, strontium-90, thallium-204, yttrium-88 and zinc-65. November 15, 1965, 12 P. M260-10. Standard reference materials: Homogeneity

characterization of NBS spectrometric stand- ards II: cartridge brass and low-alloy steel, H. Yakowitz, D. L. Vieth, K. F. J. Heinrich and R. E. Michaelis Most modern instrumental methods of analysis depend

on the use of known standards of composition for cali- bration. Newer analytical techniques such as the solids mass spectrometer, laser probe and, especially, the electron probe microanalyzer have reduced the amount

of a sample which can be analyzed quantitatively to a range of about 0.1 micrograms to as little as 0.00005

micrograms. As a corollary to these microana lyrical ad- vances, homogeneity requirements have become severe

for the analytical standards. This paper describes a continuation of the NBS effort to more fully characterize

existing standards as to suitability for the new microanalytical techniques [l]. An NBS cartridge brass sample in both the wrought (NBS-1102) and chill cast

forms (NBS-C1102), as well as an NBS low-alloy steel sample (NBS-463), have been investigated by means of 223
electron probe microanalysis and optical metallography. Some seventeen elements are contained in the brass while twenty-five elements are in the steel. Results

for ten elements in the steel are presented while re- sults for six elements in the brass are given. In the

steel, Fe, Ni, Cu, and Si are essentially distributed homogeneously at micron levels while Mn, Ta, Nb, Zr,

S, and Cr are Not. In the brass, Cu and Zn are dis- tributed homogeneously at micron levels while Pb, S, Al, and Si are not. Electron probe microanalyzer results indicate that both NBS-1102 and NBS-C1102 brass are suitable for use as a calibration standard for electron probe microanalysis as well as other microanalytical techniques such as the solids mass spectrometer. The

results for brass have been corroborated by a number of laboratories using the electron probe analyzer. Key Words: analytical standards, electron probe microanalyzer, microanalytical techniques, NBS cartridge brass, NBS low-alloy steel, optical metallography. De- cember 14, 1965. 28 p. M261. Hydraulic research in the United States, 1964,

Editor, H. K. Middleton Research and development projects being conducted

in 1965 in hydraulic and hydrologic laboratories of uni- versities and Federal agencies throughout the United

States and Canada are briefly described. A list of the contributing laboratories is given. The status of continuing projects covered by previous issues of the publication is reported upon, as well as on new projects

in progress, the results of completed work is given. References to publications relating to the projects and

an extensive subject index are included. August 14, 1964. 215 p. M262-1. Legibility of alphanumeric characters and other symbols. I. A permuted title index and bib- liography, D. Y. Cornog, F. C. Rose, and

J. L. Walkowicz

This permuted title index and bibliography to the

literature on the legibility of alphanumeric characters and other symbols includes 325 references. Due to the confusion and overlap of terminology in the legibility

literature, this report uses the term "legibility" to in- clude "legibility," "readability," "perceptibility," "visibility" and any other closely related concepts. "Other symbols" include such items as the arrows and other coded symbols used to present information on radar dis- plays. The psychological literature on perception has

been included only when it was closely involved with

the specific problems of alphanumeric characters and

other meaningful symbols. Studies concerned with en- vironmental variables, i.e., illumination and symbol- background contrast, and the legibility of dials and

scales have received little attention. An author index

is included. December 15, 1964. 100 p. M263- Report of the 49th National Conference on Weights and Measures, 1964 A report of the proceedings of the forty-ninth National Conference on Weights and Measures, held in Washington, D. C, June 15, 16, 17, 18, and 19, 1964, and at- tended by state, county, and city weights and measures

officials. 226 p. M264. Technical highlights of the National Bureau of Standards, Annual Report 1964 This is an illustrated digest of NBS technical and

scientific activities during the fiscal year ending June 30, 1964. During this period NBS programs were regrouped

into four institutes: Institute for Basic Standards, In- stitute for Materials Research, Institute for Applied Technology, and Central Radio Propagation Laboratory. Summaries are given of typical institute projects in ap- plied mathematics, electricity, metrology, mechanics,

heat, atomic physics, physical chemistry, laboratory astrophysics, radiation physics, radio standards, analyti- cal chemistry, polymers, metallurgy, inorganic materials, reactor radiations, cryogenics, building research, in- formation technology, instrumentation, radio propagation, engineering standards, and weights and measures. Also

included are discussions of the Clearinghouse for Federal Scientific and Technical Information, the National

Standard Reference Data System, Standard Reference

Materials program, measurement services program, and

national and international cooperative activities. De- cember 1964. 281 p. M265. Dimensional metrology. Subject-classified with

abstracts. I. H. Fullmer This bibliography covers two of the three principal di- visions of dimensional metrology, namely ( 1) linear, angular, and geometrical measurements of solid bodies, and

(2) in-process control of sizes. The remaining division

is gages, gaging, and inspection as to specified limits of

size. There are about 3,600 references classified under main subject headings in 12 sections, which are further subdivided into 102 subsections covering 100 subjects. The 12 main subjects are (1) general metrology, physical

and dimensional; (2) length and diameter measurements by

interferometry; (3) length and diameter measurements by mechanical methods; (4) calibration of line standards of length, including tapes; (5) dimensional measuring instru- ment design features; (6) angle measurement; (7) measurements of deviations from geometrical regularity;

(8) measurement of profile; (9) measurement of screw

threads; (10) measurement of gears; (11) measurement of thickness of thin films; and (12) measurement and pro- duction techniques for accurate in-process control of size and form. The references in each subsection are arranged chronologically and a brief abstract of each is given with few exceptions. The bibliography is an at- tempt to organize and make more readily available the extensive existing knowledge in the field covered. August 1, 1966. 309 p. M266. Computer literature bibliography, 1946 to 1963, W. W. Youden

Over 6,100 references are contained in this bibliog- raphy of computer literature published during the years 1946 through 1963- The Bibliography Section includes

the full title and all of the authors of every article published in 9 journals, 21 books, and over 100 proceedings. 224
No articles from other sources are included. The books

selected are those that have chapters by individual

authors, as such chapters are not normally indexed in most libraries. The Title Word Index Section is used to find an arti- cle if any part of its title is known or to find all the

articles whose titles include a particular word or phrase. The Author Index Section lists all authors of each arti- cle, but does not indicate whether an individual is the

sole author of the article. The bibliography is intended not only to serve those

in the computer field, but also to be an experiment in information retrieval to determine the value of cumulative KWIC and author indexes to published literature in a specific subject area. March 31, 1965. 463 p. M267. Systems engineering in ceramics. Proceedings

of an American Ceramic Society Symposium,

Chicago, 111, j April 19, 1964 The last decade has witnessed the increased interest

of Ceramic Engineers in the development of a number of engineering techniques for the analysis and synthesis of groups of interconnecting elements or components. These techniques have been found to be applicable and

useful for studying overall systems behavior. This area, now called Systems Engineering, has begun to encompass these techniques and methods of attack, and to emphasize their usefulness. This Symposium comprises six separate papers by

leaders in this area. There are basic discussions of the concepts involved and their relation to other disciplines. There are sections on process control systems, computers, and statistical methods. The final section considers, in detail, several examples of systems of in- terest to ceramists. 136 p. May 1, 1965- M268. Electrical engineering units and constants This handy wallet-size card lists major electrical quantities and units, and their symbols. It also provides rounded values for physical constants most often used

in the electrical field. The card serves as a companion

piece to NBS Miscellaneous Publication 253 which in- cludes a more exact and comprehensive list of physical

constants and a recommended list of unit prefixes. June 1965. 1 card (both sides). M269- Statistical association methods for mechanized

documentation. Symposium Proceedings, Washington 1964, Editors M. E. Stevens, V. E. Giuliano, and L. B. Heilprin A Symposium on Statistical Association Methods for Mechanized Documentation was held in Washington,

D.C., in March 1964. The Symposium was jointly sponsored by the Research Information Center and Advisory

Service on Information Processing, Institute for Applied Technology, National Bureau of Standards, and by the American Documentation Institute. Topics covered in- clude the historical foundations, background and prin- ciples of statistical association techniques as applied

to problems of documentation, models and methods of applying such techniques, applications to citation indexing, and tests, evaluation methodology and criticism. This volume contains 22 of the papers included in the program, the abstracts of 4 additional papers that were

presented, and the text of the talk given by R. M. Hayes

at the banquet. December 15, 1965- 261 p. M270. Hydraulic research in the United States, 1965, Editor H. K. Middleton Research and development projects being conducted

in 1965 in hydraulic and hydrologic laboratories of uni- versities and Federal agencies throughout the United

States and Canada are briefly described. A list of the contributing laboratories is given. The status of continuing projects covered by previous issues of the publication is reported upon, as well as on new projects in progress, the results of completed work is given. Ref- erences to publications relating to the projects and an extensive subject index are included. July 22, 1965. 230 p. M271. Guide to instrumentation literature, J. F. Smith and W. G. Brombacher

This compilation is a source list of instrumentation

literature, with a subject index and an index of personal and corporate authors. July 7, 1965- 220 p. (Super- sedes NBS Circ. 567). M272. Report of the 50th National Conference on Weights and Measures, 1965 A report of the proceedings of the fiftieth National Conference on Weights and Measures, held in Washington, D. C, June 21, 22, 23, 24, and 25, 1965, and at- tended by state, county, and city weights and measures

officials. April 1, 1966. 231 p. M274. Periodicals and serials received in the Library

of the National Bureau of Standards as of October 1965, N. J. Hopper

This publication (which is a revision of the NBS Monograph 57) lists alphabetically the periodicals and serials, both American and foreign, that are currently being re- ceived in the Library of the National Bureau of Standards. Approximately 2,400 titles are cited, together with

call numbers indicating the location of bound volumes in the Library. Although this information was compiled

primarily for the use of the Bureau's scientific staff, it is also of value to libraries, scientific and technical

organizations, and research workers. Key Words: Libraries, indexes (locators), translations, books, periodicals, bibliographies. July 1, 1966. 87 p. (Supersedes Mono. 57).

M275- Measures for Progress. A history of the National Bureau of Standards, R. C. Cochrane The story of the first half century of the Federal Government's primary scientific research body is told in ap- pealing, interest-holding literary style. Starts with the founding of the Bureau in 1901, when this country was be- 225
ginning its industrial growth, and physical weights and measures were in a hodge-podge of disorganization. Tells how the Bureau brought order out of this chaos and, through scientific research, went on to establish exacting,

reliable new standards involving incredible sophistication

in physical measurement. Reflected throughout the book

is the remarkable technological, industrial, and commercial growth that the country itself was experiencing, 190 1- 1951, and the key role played by the National Bureau of Standards in this evolving technology. Thorough documentation and indexing, plus 15 Appendixes containing

a fund of information not heretofore assembled, make this

a valuable reference volume. July 1966, 703 pp. M276. Cooperation, convertibility, and compatibility among information systems. A literate review, M. M. Henderson, J. S. Moats, M. E. Stevens, and S. M. Newman

The purpose of the study of the literature on which this report is based was to examine those problems in the

field of documentation and in the operation of information systems which could possibly be solved or allevi- ated by some greater measure of cooperation, convertibility, or compatibility among systems, particularly those systems for handling scientific and technical information supported in whole or in part by the United States Government. An account is given of early developments

and general background information about organizations

active in cooperative documentation efforts. Current cooperative activities are then discussed in terms of dissemination and publication of secondary sources, ac- quisition and exchange of publications, analysis and

identification, systematization and terminology control, storage and search, and standardization. General prob- lem areas, special problems created by changes in the nature of the documentary materials to be handled and

special problems raised by the prospects for mechanization are then discussed. A final section raises questions

with regard to the implications for future progress. Key Words: Documentation, scientific and technical in- formation, information centers, libraries, mechanized information systems, convertibility, abstracting, indexing, cataloging, technical reports, translations, cooperative

acquisitions, information exchange, standardization. June 15, 1966. 140 p.

M277. Photonuciear data index An index to experimental data on photonuciear reactions is presented. Organized by element and isotope, each entry in the index supplies quantitative information for a specific reaction on the ranges of excitation energy, source energy, detected particle energy, and

emission angles for reaction produced covered in each

reference. Information is also given on the type of measurement and detector used. April 1, 1966. 96 p. M278. Bibliography on atomic transition probabilities, B. M. Glennon and W. L. Wiese A revised and updated bibliography on atomic transition probabilities is presented. The papers are arranged according to elements and stages of ionization, and the method employed and class of transitions are indicated behind each reference. Only articles on discrete transitions, both permitted and forbidden, are listed. Also in- cluded is a supplementary list of important papers deal- ing with transition probabilities from a general point

of view, and a table of comprehensive papers not in- cluded in the element list. Key Words: Atomic, discrete, forbidden, permitted,

transition probability. April 22, 1966. 92 p. (Supersedes Mono. 50.) M279- Technical highlights of the National Bureau of Standards, Annual Report 1965 This is an illustrated digest of NBS technical and

scientific activities during the fiscal year ending June 30, 1965- It lists major programs as they were carried out by the four NBS institutes: Institute for Basic Standards,

Institute for Materials Research, Institute for Applied Technology, and Central Radio Propagation Laboratory. Summaries are given of typical institute projects in ap- plied mathematics, electricity, metrology, mechanics,

heat, atomic physics, physical chemistry, laboratory astrophysics, radiation physics, radio standards, analyti- cal chemistry, polymers, metallurgy, inorganic materials, reactor radiations, cryogenics, building research, in- formation technology, instrumentation, radio propagation, engineering standards, and weights and measures. Also

included are discussions of the Clearinghou se for Federal

Scientific and Technical Information, the National Standard Reference Data System, Standard Reference Materials program, measurement services program, and national and international cooperative activities. June 1966. 204 p.

226
3.9. APPLIED MATHEMATICS SERIES

The Applied Mathematics Series contains mathematical

tables, manuals and studies of special interest to physicists, engineers, chemists, biologists, mathematicians, computers and others engaged in scientific and technical

work. Some of the volumes are reissues, to meet a continuing demand, of the Mathematical Tables prepared by

the Project for the Computation of Mathematical Tables

conducted by the Federal Works Agency, Work Projects

Administration for the City of New York, under the scientific sponsorship of and made available through the National Bureau of Standards. The Mathematical Tables

series (MT) as originally issued is out of print; the list, by title, is given in NBS Circular 460. When the Applied Mathematics Division was established

at the National Bureau of Standards in July 1947, the Mathematical Tables Project became identified with the

unit of this Division known as the Computation Laboratory. See "Price List of Available Publications", page 396.

AMS55. Handbook of mathematical functions with formulas, graphs, and mathematical tables, Edited by M. Abramowitz and I. A. Stegun This publication not only combines the material found

in all former reference volumes on the subject; it additionally expands the work of past authors by increasing

the number of functions covered, presenting more extensive numerical tables, and giving larger collections of mathematical properties of the tabulated functions. It also provides comparatively simple methods of obtaining values of functions outside the tabulated range. As a result of scientific advances and, especially, the increasing use of automatic computers, a greater variety

of functions and a higher accuracy of tabulation are now in demand by users of mathematical functions. The

Handbook includes rational approximation formulas for

all the functions, tailored to the modern computer and

tables useful for a pre-programming survey of the ac- cess to a computer; for the researcher who does not, and who must do his own computations, they are, of course, indispensable. Subjects covered are included by the following chapter headings: Mathematical Constants; Physical Constants and Conversion Factors; Elementary

Analytical Methods; Elementary Transcendental Functions-Logarithmic, Exponential, Circular, and Hyperbolic

Functions; Exponential Integral and Related Functions; Gamma Function and Fresnel Integrals; Legendre Functions; Bessel Functions of Integer Order; Bessel Functions of Fractional Order; Integrals of Bessel Functions;

Struve Functions and Related Functions; Confluent Hypergeometric Functions; Coulomb Wave Functions; Hypergeometic Functions; Jacobian Elliptic Functions and Theta Functions; Elliptic Integrals; Weierstrass

Elliptic and Related Functions; Parabolic Cylinder

Functions; Mathieu Functions; Spheroidal Wave Functions; Orthogonal Polynomials; Bernoulli and Euler Polynomials, Riemann Zeta Functions; Combinatorial Analysis; Numerical Interpolation, Differentiation, and Inte- gration; Probability Functions; Miscellaneous Functions; Scales of Notation, and Laplace Transforms. (June

1964). 1050 p.

AMS 58. Fractional factorial designs for experiments

with factors at two and three levels, W. S. Connor

and S. Young

This catalogue contains fractional factorial designs for use in experiments which investigate m factors at 2 levels and n factors at three levels. The grand mean, all main

effects, and all two-factor interaction effects are esti- mated. All higher-order interactions are assumed negli- gible and their absence allows estimation of the error variance. A design has been constructed for each of the

39 pairs (m,n) includes from m + n=5 through m+n=10,

(ra.n^o). September 1, 1961. 65 p.

3.10. NATIONAL STANDARD REFERENCE

DATA SERIES

This series provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated. Reports will

fall into eight categories: general; nuclear properties; atomic and molecular properties; solid state properties; thermodynamic and transport properties; chemical kinetics; colloid and surface properties; and mechanical

properties of materials. See "Price List of Available

Publications," page 396. NSRDS-NBS 1. National standard reference data system. Plan of operation. E. L. Brady

and M. B. Wallenstein

In June 1963 the National Bureau of Standards was as- signed the responsibility by the President's Office of Science and Technology of administering a government- wide program to promote and coordinate systematic data compilation and evaluation activities in all fields of the physical sciences. This government-wide program has been called the National Standard Reference Data System. The present report describes the background of

this program and the mode of approach adopted by the management of the National Bureau of Standards in ful- filling its responsibility. December 30, 1964. 12 p. NSRDS-NBS 2. Thermal properties of aqueous uni- univalent electrolytes, V. B. Parker The available specific heat, heat of dilution, and heat

of solution data for aqueous solutions of uni-univalent

electrolytes have been critically reviewed and tables of selected "best" values at 25°C prepared. In addition, the neutralization data have been critically reviewed in order to obtain the "best" value, 13,345 cal/mole, for the heat of ionization of water at 25°C. The electrolytes reviewed include the hydroxides,

halides and oxyhalides, nitrates and nitrites, formates and acetates, cyanides, cyanates and thiocyanates, and permanganates of hydrogen, ammonium and methyl ammonium derivatives, silver, and the alkali metals.

April 1, 1965. 66 p. 227
NSRDS-NBS 3, Section 1. Selected tables of atomic spectra. Atomic energy levels and multiplet tables Si II, Si III, Si IV, C. E. Moore

This publication is the first of a long series planned

to provide important data derived from the analyses of optical spectra, for selected atomic spectra. Section 1 includes the second, third, and fourth spectra of silicon, Si II, Si III, and Si IV, respectively. For

each spectrum, Part A contains the Atomic Energy

Levels, and Part B the Multiplet Table. The spectra are selected for inclusion in NSRDS-NBS

3 when the analysis is essentially complete. The general purpose is to provide a current revision of the published volumes on Atomic Energy Levels (NBS Circ. 467) and, also, a completely revised Multiplet Table to replace both the Princeton Multiplet Table of 1945 (NBS

Tech. Note 36, PB 151 395) and the Ultraviolet Multiplet Table (NBS Circ. 488). The same format as that used in the earlier tables has been continued. Part A includes for each spectrum a short text and bibliography, followed by tabular data in- cluding in respective columns the electron configuration, term designation, J-value, energy level, and term

interval. An array of observed terms is also included, as before. Part B gives for each spectrum the references used

for analysis, wavelength, and intensity. The various columns give the wavelength, reference number, esti- mated intensity, low and high excitation potentials of

the energy levels involved in the transition producing

the line, low and high J-values, and the multiplet designation together with a multiplet number. For convenience

the multiplet numbers in the earlier tables have been re- tained. A decimal system permits the insertion of new

multiplets among the older ones, in their proper order. A flexible paging system will enable the user to ar- range the spectra in proper order, even though they are published in irregular order. June 25, 1965. 26 p. NSRDS-NBS 4. Volume I. Atomic transition probabilities. Elements hydrogen through neon, W. L. Wiese, M. W. Smith, and

B. M. Glennon Atomic transition probabilities for about 4,000 spectral lines of the first ten elements, based on all avail- able literature sources, are critically compiled. The

data are presented in separate tables for each element and stage of ionization. For each ion the transitions

are arranged according to multiplets, supermultiplets,

transition arrays, and increasing quantum numbers. Al- lowed and forbidden transitions are listed separately. For each line the transition probability for spontaneous

emission, the absorption oscillator strength, and the line strength are given along with the spectroscopic designation, the wavelength, the statistical weights, and the energy levels of the upper and lower states. In addition, the estimated accuracy and the source are indi- cated. In short introductions, which precede the tables

for each ion, the main justifications for the choice of the

adopted data and for the accuracy rating are discussed. A general introduction contains a critical review of the major data sources. May 20, 1966. 153 p. 3.11. BUILDING SCIENCE SERIES

Research results, test methods, and performance cri- teria of building materials, components, systems, and

structures. See "Price List of Available Publications," page 396.

BSS2. Interrelations between cement and concrete properties. Part 1. Material's, techniques, water, requirements and trace elements. August 20, 1965- 36 p. Contains three sections as follows; Section 1. Materials and techniques, R. L. Blaine, H.

T. Ami, and B. E. Foster The studies of the interrelations between cement and

concrete properties are presented in a series of related

articles. This first section presents the type classification of the cements and the areas from which they were

procured together with the tests performed on the ce- ments and concretes. Also presented are the methods employed in the statistical treatment of the data and a discussion of the significance of the various statistical techniques employed in the following sections dealing

with specific aspects of the interrelations between ce- ment and concrete properties. Section 2. Water requirements of portland cement, R. L.

Blaine, H. T. Ami, and R. A. Clevenger The relationship between cement characteristics and

the water requirements of near cement pastes, mortars, and concretes made with 199 portland cements of differ- ent types and from various areas were studied by fitting multivariable regression equations with the aid of a digital computer. The principal variables which appeared to have the greatest effect on water requirements were as

follows: (1) For neat cement pastes of normal con- sistency—fineness; (2) for the 1:4 and 1:2.75 mortars of standard consistency—the air content, A12 03

, and silica modulus; (3) for concretes—the air content, A12 03

, and Fe2 03

. The use of A/F ratios or the potential C3 A val- ues in place of the A12 03 values in the computations re- sulted in concordant equations. Other commonly deter- mined variables as well as a number of the minor constituents and trace elements also appeared to be associated with the water requirements to a lesser degree. Section 3. Occurrence of minor and trace elements in portland cement, R. L. Blaine, L. Bean,

and E. K. Hubbard

Minor and trace elements in 186 portland cements were

determined by spectrographic analyses. The semiquantitative values obtained ranged up to 1 percent for Ti and Mn, to 0.5 percent for P, and Zr, to 0.2 percent for Ba and Zn, to 0.1 percent for V, to 0.05 percent for Cu,

Mo, and Pb. Other elements such as Cr, Li, Ni, Co,

228
Rb, Ag, B, and Sn were found in lesser amounts in some

of the cements. The quantities of Na2 0, K2 0, and SrO

as determined by flame photometric methods were deter- mined in 199 portland cements. The frequency distribu- tions are presented and the effect of these minor and

trace elements on the oxide values and the calculated compound composition values are discussed. BSS3. Doors as barriers to fire and smoke, H. Shoub

and D. Gross A study was made of means for improving dwelling

unit entrance doors as fire and smoke barriers. Existing combustible doors and frames could be modified to en- hance their fire resistance, but it did not appear practical to raise them to the level of rated commercial fire door assemblies. Fire retardant paints, except those

consisting of heavy, reinforced, intumescent-type coatings, provided little or no increase in fire resistance. Several modifications of existing doors were not ef- fective in preventing the transmission of smoke. However, controlling the pressure levels on both sides of a

door, as by suitable venting, appeared to offer a means

of reducing smoke penetration into an area.

It is recommended that current methods of fire tests

of doors, and criteria relating to their fire and smoke

transmission be improved. March 25, 1966. 10 p. BSS4. Weather resistance of porcelain enamels. Effect

of exposure site and other variables after seven

years, M. A. Rushmer and M. D. Burdick An exposure test of porcelain enamels at seven repre- sentative sites in the continental United States was

initiated by the National Bureau of Standards and the Porcelain Enamel Institute in 1956. After seven years

all specimens were returned to the Bureau and the changes

in gloss and color determined. These changes were

found to be different at all exposure sites except Pitts- burgh and New Orleans. The most severe changes occurred for specimens exposed at Kure Beach, 80 feet from the ocean, while the least change occurred for specimens exposed at Los Angeles. The differences in behavior of the specimens correlated with both the relative humidity and the pH of the suspended particulate matter at the different sites. A direct relation existed between the acid resistance

of the enamels and weather resistance. However, enamels

of different types, such as enamels on aluminum and

steel, having the same acid resistance did not necessarily show the same weather resistance. Comparison with enamel specimens exposed for seven

years in an earlier test showed that porcelain enamels

produced after the end of World War II were equally re- sistant to changes in gloss at the Washington, D.C.,

site as those produced before the war. As a group, the regular glossy acid-resistant enamels

on steel showed the best weather resistance of the vari- ous types tested. No corrosion of the base metal was

noted for any specimen on which the initial coverage was complete. Key Words: Acid resistance, color, gloss, pH, porcelain enamel, relative humidity, weather re- sistance. May 2, 1966. 16 p.

BSS5. Interrelations between cement and concrete properties. Part 2. Sulfate expansion, heat of hydration, and autoclave expansion. July I, 1966. 44 p. Contains three sections as follows: Section 4. Variables associated with expansion in the potential sulfate expansion test, R. L.

Blaine, H. T. Ami, and D. N. Evans The relationships between the chemical characteristics of 183 portland cements and the expansion of mortar

bars made of one part cement with 7.0 percent S03 and

2.75 parts graded Ottawa sand were studied by computing multivariable regression equations with the aid of a

digital computer and determining which of the independent variables had a significant effect on the expansion

values. For cements containing 0 to 9 percent C3 A, a

linear relationship appeared adequate whereas a higher power of the C3 A content was required with cements having 7 to 15 percent C3 A. The principal variables other than the potential C3 A content associated with the ex- pansion were the Fe2 03 content and CaO/Si02 ratio. Of

the other commonly determined variables, the loss on

ignition, insoluble residue and K2 0 content were as- sociated with high expansion values of the low C2 A ce- ments. Certain minor constituents or trace elements

such as SrO, Cu, Cr, Ni, P, V, and Zn also appeared to be associated with the expansion values of the cements. The use of the potential C3 S content or the compressive

strength of mortar cubes as variables indicated that high C3 S was associated with cements having low expansion

values as determined by this test. Section 5. Heat of hydration of portland cements, R. L. Blaine and H. T. Ami

The relationships between the chemical characteristics of portland cements and the heat of hydration at 7 and 28 days and at 1 year were studied by computing

multivariable regression equations with the aid of a digital computer and determining which of the independent

variables appeared to have a significant relationship to the heat of hydration values. The computed equations

verified to a reasonable degree effects usually attributed

to the major potential compounds. Other commonly de- termined variables, such as fineness and loss on ignition, were associated with the heat of hydration at ail ages: K2 0 and S03 with the 7 day; and Na2 0 with the 1-year heat of hydration. Of the other minor constituents Cu and P appeared to be associated with the heat of hydration at all ages. In addition, Cr and Zr were associated with heat of hydration at 7 days; Co, Zr, and SrO

at 28 days; and V and Ba at 1 year. Section 6. Variables associated with small autoclave expansion values of portland cements, R. L. Blaine and H. T. Ami

The autoclave expansion values of the cements in this investigation ranged from minus 0.05 to plus 0.50

percent. Statistical analyses used to determine the vari- ables associated with the expansion confirmed that MgO

and C3 A were most significant. Increased values of the

alkalies, SrO, V, and loss on ignition were also as- sociated with higher autoclave expansion, whereas in- 229
creases in S03 and Cr were associated with a decrease

in the expansion values. BSS6. Some properties of the calcium aluminoferrite hydrates, E. T. Carlson Calcium aluminoferrite hydrates in two series, 4CaO-

(Al2 03 ,Fe2 03 ). n H2 0 (hexagonal plates) and 3CaO

(Al2 03 ,Fe2 03 )-6H2 0 (isometric), were prepared from the anhydrous aluminoferrites by hydration in the presence of Ca(OH)2

. The hexagonal phase was stable below 15°C,

the isometric above 35°C, in contact with solution. The

end member, 2CaOFe2 03

, did not produce an isometric

hydrate, however, X-ray diffraction patterns of the hexagonal series in the 19H2 0 stage of hydration were indis- tinguishable from patterns of 4CaO-Al2 03

- 19 H2 0. After drying to the 13-hydrate stage, slight differences in the patterns were observed. The isometric series shows a

definite shift in x-ray pattern with change in Fe2 03 /Al2 03 ratio, the unit-cell edge increasing from 12.573 for 3CaOA12 03 -6H2 0 to 12.716 for the member having Fe2 03 /Al2 03 close to 5. DTA traces show endotherms near 100 and 200°C corresponding to dehydration stages of the hexagonal series and one near 300°C representing the first dehydration stage of the isometric phase. The hexagonal

hydrates are converted to the isometric during the course

of the DTA run. The peak attributed to the isometric phase shifts from 323 to 290°C going from the pure aluminate to the member richest in Fe2 03

. All the aluminoferrite hydrates, both hexagonal and isometric, re- acted with CaS04 solution to give products of the monosulfate and trisulfate (ettringite) types, the latter pre- dominating at later stages. The rate of reaction decreased with increasing Fe2 03 content. Key Words: Calcium aluminoferrite hydrates; calcium

sulfate reaction with calcium aluminoferrite hydrates; DTA of calcium aluminoferrite hydrates; x-ray patterns of calcium aluminoferrite hydrates. June 1, 1966. 11 p.

3.12. COMMERCIAL STANDARDS

This series define the quality levels for products in accordance with the principal needs of the trade. Their use is voluntary. See "Price List of Available Publications" page 396.

CS5-65- Pipe nipples: brass, copper, steel, and wroughtThis standard covers the requirements for carbon

steel and wrought-iron pipe nipples, black- and zinc- coated (hot-dip galvanized), in standard iron-pipe sizes

from 1/8 inch to 12 inches, inclusive, in standard lengths; and brass and copper nipples in standard sizes from 1/8 to 6 inches, inclusive, in standard lengths. The

standard also covers the packaging and marking require- ments for standard sizes and assortments of nipples and

includes a provision for the identification of nipples complying with the standard. January 15, 1965. 8 p. (Supersedes CS5-46).

CS9-65- Builders' template hinges This standard covers dimensions and tolerances for length, width, and offset where applicable, screw hole spacing and thickness of template hinges, and also gives template identification symbols, and recommended

screw sizes. The types of hinges covered are: Full

mortise, half surface, full surface, half mortise. January 15, 1965. 13 p. (Supersedes CS9-33). CS20-63. Vitreous china plumbing fixtures This publication covers material, grading, dimensions,

certain features of construction, and the types and sizes

of vitreous china plumbing fixtures currently in general use and demand. Also given are definitions, inspection methods, tests, and means for identifying fixtures that comply with the standard. Certain recommendations for installation of the fixtures are also given. November 15, 1963. 24 p. (Supersedes CS20-56). CS46-65. Hosiery lengths and sizes— excluding women's

(nonstretch) The purpose of this standard is to establish measure- ment methods and standard dimensions for the lengths and sizes of the classifications of hosiery shown herein.

It is intended to provide information for the guidance of manufacturers, distributors, and consumers, and serve as

a basis for common understanding on the proper rela- tionship of size to foot and leg lengths. It is also in- tended to aid purchasers through the proper identification of hosiery sizes, so as to eliminate misrepresentation and confusion due to a diversity of measurements and methods of measuring. December 31, 1965- 20 p. (Super- sedes CS46-49) CS142-65. Automotive lifts This standard covers definitions and specifications

for automotive lifts in rated capacities up to 75,000 pounds, inclusive. This standard covers minimum specifications for out- side installations as well as inside installations. This standard covers minimum specifications for auto- motive lifts powered either by compressed air, oil pumps,

or electric motors. September 1, 1965- 18 p. (Super- sedes CS142-62). CS1 50-63. Hot-rolled rail steel bars (produced from tee- section rails) This Commercial Standard covers the mechanical properties, and the dimensions, weights, and tolerances for 17 standard structural sections of hot-rolled rail steel

bars. The standard also includes a provision for the label- ing and identification of bars complying with the standard. The standard does not include the requirements for

rail steel concrete reinforcing bars which are covered in Simplified Practice Recommendation R26. December 15, 1963. 18 p. (Supersedes CS1 50-48). CS163-64. Ponderosa pine windows, sash, and screens

(using single glass and insulating glass) Scope— This standard provides the layouts, construction details, and minimum specifications for the following 230
standard stock windows, sash, and screens fabricated

from ponderosa pine wood. It includes provisions for materials, preservative treatment, methods of glazing and screening, design details, dimensions, glass sizes

for single and insulating glass, and tolerances. It also includes a uniform means of identifying and grade marking those products made in conformance with this standard. A list of definitions of trade terminology is given. March 17, 1964. 17 p. (Supersedes CS163-59 and

CS193-53). CS190-64. Wood double-hung v This standard provides minimum requirements for double-hung wood window units. It covers material, construction, assembly, grading, and tolerances for these requirements. Essential construction requirements are given for the

following: Window frames. 1% in. double-hung type windows.

Balancing. Weathers tripping.

I

1/, in. storm sash. % and IV, in. window screens. Assembly of component parts into a window unit. March 17, 1964. 9 p. (Supersedes CS190-59). CS204-64. ; window

Awning window units as designed and produced by in- dividual manufacturers vary widely in design, layout, sizes, and methods of operation, and do not lend themselves to rigid standardization as to all of these characteristics. This Standard provides minimum requirements

for material, construction, assembly, grading, and

tolerances. Essential construction requirements are given for the

following: Awning window and sash frames. Awning window and sash.

Weatherstripping. Storm sash. Assembly of component parts into a wood awning window unit. March 17, 1964. 9 p. (Supersedes CS204-59). CS205-64. Wood casement ndow u Casement units, as designed and produced by indi- vidual manufacturers, vary widely in design, layout, sizes, and methods of operation and do not lend them- selves to rigid standardization as to all of these characteristics. This standard therefore provides minimum re- quirements for only the material, construction, assembly, grading, and tolerances of casement window units. March 17, 1964. 9 p. (Supersedes CS205-59). CS227-59. Polyethylene film This standard covers dimensional tolerances, types, grades, classes, and kinds of polyethylene film, intrinsic quality requirements, and test methods. The dimensional

tolerances include thickness, yield, width, length, and

flatness. The intrinsic quality requirements include density, appearance, impact properties, tensile properties,

slip, clarity, ink adhesion, heat sealability, and odor. A sampling fmethod is included. November 15, 1959- 24 p. (Reprinted 1964 with Amendments)

CS248-64. Vinyl-coated glass fiber insect screening and

louver cloth This Standard gives the nomenclature, definitions, and

general requirements for commercial standard glass fiber insect screening designed and woven primarily for in- stallation in or on any dwelling, patio, screen enclosure,

building or structure, for the purpose of preventing the ingress of flies, mosquitoes, or other insects. This

Standard specifies the requirements for weatherability

,

flame resistance, color stability, bond and bursting

strength, stiffness, and other chemical and physical

characteristics of the product. Test procedures for de- termining these properties are described. February 17, 1964. 14 p. (Supersedes CS248-6 2). CS2 54-63. Acrylonitrile-butadiene-styrene (ABS) plastic pipe (SDR-PR and class T) The ABS pipe covered in this publication is made in standard thermoplastic pipe dimension ratios and is pres- sure rated for water. Included are criteria for classifying ABS plastic pipe materials and ABS plastic pipe, a system

of nomenclature for ABS plastic pipe, and requirements and methods of test for materials, workmanship, dimensions, pressure rating, sustained pressure, burst pressure, and extrusion quality. Methods of marking and practices

for indicating compliance with this standard are also

given. July 1, 1963. 14 p. CS255-63. Polyethylene (PE) plastic pipe (SDR-PR)

The PE pipe covered in this publication is made in standard thermoplastic pipe dimension ratios and is pres- sure rated for water. Included are criteria for classifying PE plastic pipe materials and PE plastic pipe, a system

of nomenclature for PE plastic pipe, and requirements and methods of test for materials, workmanship, dimensions, pressure rating, sustained pressure, burst pressure, and environmental stress cracking. Methods of marking and practices for indicating compliance with this standard

are also given. July 1, 1963. 14 p. CS256-63. Polyvinyl cnloride (PVC) plastic pipe (SDR-PR

and class T) The PVC pipe covered in this publication is made in standard thermoplastic pipe dimension ratios and is pres- sure rated for water. Included are criteria for classifying PVC plastic pipe materials and PVC plastic pipe, a sys- tem of nomenclature for PVC plastic pipe, and require- ments and methods of test for materials, workmanship,

dimensions, pressure rating, sustained pressure, burst pressure, flattening, chamical resistance, and extrusion

quality. Methods of marking and practices for indicating compliance with this standard are also given. July 1, 1963. 15 p. CS258-63. Expanded vinyl fabrics for apparel use The material covered by this standard is expanded

vinyl fabrics for apparel use, whether plain, embossed, or 231
otherwise surface treated (excluding flocked vinyl material) made with circular knit cotton backing fabric, 6 oz. per

linear yard, plus or minus 10 percent, based on a width of 60 inches in the original gray fabric. This standard gives requirements and methods of test

for gage or thickness, weight and width of fabric, abrasion

resistance, adhesion, wet adhesion, blocking, cold crack, color fastness, flammability, foam color, flexing, stitch- tear resistance, trapezoid tear, breaking strength, and

aging of expanded vinyl fabrics for apparel use to insure

satisfactory products for consumer use. September 19, 1963. 12 p. CS259-63 (As amended Feb. 1, 1966). Southern Pine plywood

This Commercial Standard covers the principal grades

of interior type, exterior type, and overlaid plywood made

from certain species of southern pine. It includes tests, standard sizes, size tolerances, marking, certification, nomenclature, and definitions. February 1, 1966. 16 p. CS260-63. Shoeboard

This standard covers general requirements, intrinsic quirements, methods of test, and nomenclature and defi- nitions, for 10 types and 3 classes of shoeboard. It also presents a basis on which performance guarantees may

be made by the manufacturer. Sept. 10, 1963. 8 p. CS261-63. Grading of diamond powder in sub-sieve sizes This Commercial Standard covers the quality require- ments of sub-sieve sizes of diamond powder and establishes the standard particle size ranges for micron sizes.

It establishes size designations of the size ranges and

the grading limits that are acceptable in each size range.

It also gives a method of inspection to determine compli- ance with this standard and directions for the labeling of powder to indicate such compliance. September 20, 1963.

9 P- CS262-63- Water-repellent preservative non-pressure

treatment for millwork This Commercial Standard covers requirements for the water-repellent preservative solutions and for the non- pressure methods of treating softwood millwork to resist swelling, shrinkage, and warpage due to changes in moisture conditions, and to reduce attack by decay and

stain organisms which may occur when wood contains excessive moisture. It includes a voluntary method of identifying for the consumer millwork which has been

treated in accordance with this Standard. Millwork, for the purposes of this Standard, includes prefit windows,

sash, screens, exterior frames, blinds, shutters, soft- wood doors and door jambs and cut-to-length standing

trim, and non-assembled but completely machined, knocked-down parts of those products. December 31, 1963- 12 p. CS263-64. Aluminum nails This Commercial Standard covers the types, sizes,

material, and principal dimensions of aluminum wire

nails commonly used in the building industry. The

finish, the approximate number of nails per pound, and

tolerances for the principal dimensions are included. Provision is also made for the labeling or identification

of nails complying with the standard. The standard does

not cover specific applications or special purpose nails. November 1, 1964. 13 p. CS264-64. Wood horizontal-sliding window units (all sash operating) This standard provides minimum requirements for horizontal-sliding wood window units with a glass height up to and including 50 inches and with all sash operat- and tolerances for these requirements. Essential construction requirements are given for the following: frames, 1% in. sliding type windows, weather

stripping, storm sash, screens, and the assembly of component parts into a window unit. March 17, 1964. 9 p. CS265-64. Wood horizontal-sliding window units (one or more non-operating sash) This standard provides minimum requirements for hori- zontal sliding wood window units with a glass height up to and including 50 inches and with one or more nonoperating sash. It covers material, construction, as- sembly, grading, and tolerances for these requirements. Essential construction requirements are given for the following: frames, l

3/8 inch sliding type windows, weatherstripping, storm sash or double glazing panel, screens, and the assembly of component parts into a window unit. March 17, 1964. 9 p. CS266-64. Wood single-hung window units This standard provides minimum requirements for single-hung wood units. It covers material, construction, assembly, grading, and tolerances for these requirements. Essential minimum construction requirements are given

for the following: Window frames.

l

3/8 inch single-hung type windows.

Balancing. Weather stripping. 1% inch storm sash. % and 1% inch window screens. Assembly of component parts into a window unit. March 17, 1964. 9 p. CS267-65. Steel medicine cabinets This standard covers the requirements for materials, construction, finishes, accessories, minimum sizes, methods of test and the labeling of sliding-door and

swinging-door steel medicine cabinets. March 1, 1965-

9 P- CS268-65. Hide trim pattern for domestic cattlehides This standard covers the trimming of hides of the domestic bovine species generally described as "domestic packer cattlehide," and other comparable hides,

April 4, 1965. 9 p. 232
CS269-65. Aluminum alloy chain link fencing This standard covers the design and construction and

the minimum chemical and mechanical requirements of

the component parts and accessories for residential and

industrial aluminum alloy chain link fencing intended

primarily for installation on the premises of any dwelling, building, or structure as a boundary line or for the protection of property. March 1, 1965. 8 p. CS270-65. Acrylonitrile-butadiene-styrene (ABS) plastic

drain, waste, and vent pipe and fittings This Commercial Standard covers requirements and methods of test for materials, dimensions and toler- ances, deflection load, crush resistance, hydrostatic

burst resistance, chemical resistance, water resistance,

flattening resistance, impact resistance, joint tightness, and solvent cement. A form of marking to indicate compliance with this standard is also included. Installation procedures are given in Appendix I and the recommended

safety precautions for using the cement are given in Appendix II. April 1, 1965. 24 p. CS271-65. Grading of abrasive grain for grinding wheels

This Standard sets forth the grit size designations,

the size limits and the sieves used in determining them, as well as the test procedure which is used by industry

in classifying abrasive grain by its dimensions. A uniform means of indicating compliance with the Standard

is also given. April 12, 1965. 10 p. (Supersedes SPR118-50).

CS272-65- Polyvinyl chloride (PVC) plastic drain, waste, and vent pipe and fittings This Commercial Standard covers requirements and methods of test for materials, dimensions, and toler- ances, deflection load, crush resistance, hydrostatic

burst resistance, chemical resistance, water resistance,

flattening resistance, flattening resistance, impact resis- and solvent cement. A form of marking to indicate compliance with this standard is also included. Installation procedures are given in Appendix I and the recommerrded

safety precautions for using the cement are given in Appendix II. April 1, 1965. 22 p. CS273-65. Expanded vinyl fabrics for furniture upholstery use The material covered by this standard is expanded

vinyl fabrics for furniture upholstery use, whether plain, embossed, or otherwise surface treated (excluding flocked

vinyl material), made with circular knit cotton backing

fabric 5.4 oz. per linear yard based on a width of 54 inches in the original gray fabric with a plus or minus

10 percent tolerance on the weight to allow for finish- ing changes. This standard gives requirements and methods of test

for gage or thickness, weight and width of fabric, abrasion resistance, adhesion, wet adhesion, blocking, cold

crack, color fastness and aging, foam color, flexing, tack tear resistance, trapezoid tear, breaking strength, and crocking of expanded vinyl fabrics for furniture upholstery use to insure satisfactory products for con- sumer use. December 31, 1965- 10 p.

3.13. SIMPLIFIED PRACTICE RECOMMENDATIONS

This series list the staple sizes, kinds, types, and

applicable methods for certain commodities produced and

stocked in greatest quantity, to aid in holding variety to a minimum. Their use is voluntary. See "Price List of Available Publications" page 396.

R53-63. Steel spirals for reinforced concrete columns

Establishes a standard of practice in production, distribution, and use, the sizes of steel spirals used for concrete column reinforcement in the building industry. October 1, 1963. 8 p. R179-63. Structural insulating board (wood or cane fiber) Structural insulating board is a preformed, rigid, fibrous insulating material made principally from wood or cane

fibers, such that its use contributes substantially to the strength and to the thermal and/or sound insulation of a

structure. The insulating properties are due chiefly to the minute air cells that are produced in great numbers

between the fibers during the manufacturing process. The surface of most boards is factory finished to any

type of surface treatment ordinarily desired. December 31, 1963. 6 p. (Supersedes R179-56). SPR229-63. Vises (machinists' and other bench-mounted

vises) This recommendation covers bench-mounted vises as described and illustrated in paragraphs 3-2 to 3-6. The

illustrations are shown for convenience in identifying the various kinds of vises described, and should not be construed as showing standard or recommended designs. November 1, 1963. 10 p. (Supersedes R229-48). SPR265-63. Forms for two-way concrete joist floor and

roof construction The purpose of this recommendation is to establish as standard the types and sizes of forms having general application in the building industry for two-way concrete

joist floor and roof construction. It is intended to serve as a uniform guide for the industry in the production, distribution and use of the forms. December 1, 1963. 6 p. SPR266-63. Gypsum board products This standard lists six varieties of gypsum board and

lath products and the various types and sizes of each in greatest demand. It further indicates the sizes for which demands are decreasing but which are not sufficiently low to warrant their deletion from the standard at this time. These are not recommended for regular stock, but may be obtained "on order", subject to possible delay in delivery. September 9, 1963. 10 p. R267-65. Standard stock sizes of machined tool steel bars (flats and squares) This recommendation covers types, sizes, tolerances and finishes for air-hardening, oil-hardening, and high carbon-high chromium machined tool steels. The recom- mendation covers flat and square shapes only, as stocked

by steel service centers and by other distributors. August 15, 1965. 10 p. 233
3.14. TECHNICAL NOTES

This series was initiated in 1959 to supplement the Bureau's regular publications program. Technical Notes

provide a means for making available scientific data that are of transient or limited interest. They are available

for sale by the Office of Technical Services, U. S. Department of Commerce, Washington 25, D. C. (Order by PB

number only). See "Price List of Available Publications", page 396.

Tech. Note 2-2 (PB151361-2). Supplementary world maps

of F2 critical frequencies and maximum usable fre- quency factor, D. H. Zacharisen. This report supplements National Bureau of Standards Technical Note 2 (PB151361), April 1959, and completes

the basic data required for F2-layej maximum usable fre- quency predictions. Prediction charts are given for the months of February, April, May, August, October, and November. Auxiliary charts are included to aid in pre- dicting F2-layer MUFs. October I960. 245 p. Tech. Note 18 (Series) Radio noise measurements are being made at sixteen

stations in a world-wide network supervised by the National Bureau of Standards, Central Radio Propagation

Laboratory, Radio Noise Section. The results of these measurements are tabulated. These tables give the monthly and quarterly percentile values of the three parameters

of the radio noise-the mean power, the mean enveloped

voltage, and the mean logarithm of the envelope voltage.

Tech. Note 18-3 (PB151377-3). Quarterly radio noise data-June, July, August 1959, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. September 9, I960. 62 p. Tech. Note 18-4 (PB151377-4). Quarterly radio noise data-September, October, November 1959, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. September 28, 1960. 58 p. Tech. Note 18-5 (PB151377-5). Quarterly radio noise data-December, January, February 1959-60, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. October

10, I960. 57 p. Tech. Note 18-6 (PB 151377-6). Quarterly radio noise data-March, April, May I960, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. October 19, 1960v 64 p. Tech. Note 18-7 (PB151377-7). Quarterly radio noise data-June, July, August I960, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. November 4, I960. 63 p. Tech. Note 18-8 (PB151377-8). Quarterly radio noise

data -September, October, November I960, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. January 31, 1961. 58 p. Tech. Note 18-9 (PB151377-9). Quarterly radio noise data-December, January, February 1960-1961, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. April 18, 1961. 66 p.

Tech. Note 18-10 (PB151377-10). Quarterly radio noise data-March, April, May 1961, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. August 14. 1961. 47 p. Tech. Note 18-11 (PB151377-11). Quarterly radio noise data-June, July, August 1961, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. November 16, 1961. 60 p. Tech. Note 18-12 (PB151377-12). Quarterly radio noise data-September, October, November 196 1, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. February 23, 196 2. 69 p. Tech. Note 18-13 (PB151377-13). Quarterly radio noise data-December, January, February 1961-62, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. May 22, 1962. 59 p. Tech. Note 18-14. Quarterly radio noise data-March,

April, May 1962 and Corrigendum for Technical Notes

18-1 through 18-11, W. Q. Crichlow, R. T. Disney, and

M. A. Jenkins. August 9, 1962. 83 p. Tech. Note 18-15. Quarterly radio noise data -June, July, August 1962, W. Q. Crichlow, R. T. Disney, and M. a! Jenkins. March 1, 1963. 81 p. Tech. Note 18-16. Quarterly radio noise data-September,

October, November 1962, W. Q. Crichlow, R. T. Disney and M. A. Jenkins. June 10, 1963. 104 p. TN18-17. Quarterly radio noise data-December 1962, January, February 1963, W. Q. Crichlow,

R. T. Disney, and M. A. Jenkins. May 21, 1964. 93 p. TN18-18. Quarterly radio noise data-March, April, May

1963. W. Q. Crichlow, R. T. Disney, and

M. A. Jenkins. July 25, 1964. 88 p. TN18-19. Quarterly radio noise data-June, July, August 1963, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. August 21, 1964. 81 p. TN18-20. Quarterly radio noise data-September, October, November 1963, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. October 23, 1964. 89 p. TN 18-21 Quarterly radio noise data-December, January, February 1963-64, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. January 25, 1965. 85 p. TN18-22. Quarterly radio noise data-March, April, May

1964, W. Q. Crichlow, R. T. Disney, and M.A.Jenkins. August 2, 1965- 89 p. TN 18-23. Quarterly radio noise data-June, July, August 1964, W. Q. Crichlow, R. T. Disney, and M. a! Jenkins. November 20, 1965. 84 p. TN 18-24. Quarterly radio noise data-September, October, November 1964, W. Q. Crichlow, R. T. Disney, and M. A. Jenkins. February 10, 1966. 88 p. TN18-25. Quarterly radio noise data-December, January, February 1964-65, W. A. Crichlow, R. T. Disney, and M. A. Jenkins. March 14, 1966, 53 p. TN 18-26 Quarterly radio noise data-March, April, May

' 1965, W. A. Crichlow, R. T. Disney, and

M. A'. Jenkins, May 2, 1966. 72 p. 234
Tech. Note 40 (Series) The Central Radio Propagation Laboratory has initiated

a program for large-scale computation of electron density

profiles from ionospheric vertical soundings. Scaling is performed at field stations permitting computation of hourly profiles at the Central Laboratory. These profiles are combined to form hourly mean quiet profiles for each sta- tion and month. The results of this program are illus- trated graphically and will be issued monthly. These

reports illustrate the electron density variations in the mean quiet ionosphere between latitudes 15°N and 50°N

along the 75°W meridian. Tech. Note 40-3 (PB151399-3). Mean electron density

variations of the quiet ionosphere. No. 3 - June 1959,

J. W. Wright, L. R. Wescott, and D. J. Brown. March

1960. 50 p. Tech. Note 40-4 (PB151399-4). Mean electron density

variations of the quiet ionosphere, No". 4 - May 1959,

J. W. Wright, L. R. Wescott, and D. J. Brown. May

1961. 51 p. Tech. Note 40-5 (PB151399-5). Mean electron density

variations of the quiet ionosphere, No. 5 - July 1959,

J. W. Wright, L. R. Wescott, and D. J. Brown. August

1961. 51 p. Tech. Note 40-6 (PB151399-6). Mean electron density

variations of the quiet ionosphere, No. 6 - August

1959, J. W. Wright, L. R. Wescott, and D. J. Brown.

September 1961. 51 p. Tech. Note 40-7 (PB151399-7). Mean electron density

variations of the quiet ionosphere, No. 7 - September

1959, J. W. Wright, L. R. Wescott, and D. J. Brown.

April 1962. 51 p. Tech. Note 40-8. Mean electron density variations of the quiet ionosphere, No. 8 - October 1959, J. W. Wright, L. R. Wescott, and D. J. Brown. September 1962. 51 p. Tech. Note 40-9. Mean electron density variations of the quiet ionosphere, No. 9-November 1959, J. Wright, L. R. Wescott and D. J. Brown. April 22, 1963. 51 p. Tech. Note 40-10. Mean electron density variations of

the quiet ionosphere, No. 10—December 1959, J. W.

Wright, L. R. Wescott and D. J. Brown. March 24, 1963. 51 p. Tech. Note 40-11. Mean electron density variations of

the quiet ionosphere, No. 11—January I960, J. W.

Wright, L. R. Wescott, and D. J. Brown. August 30, 1963. 51 p. Tech. Note 40-12. Mean electron density variations of

the quiet ionosphere, No. 12-February I960, J. W.

Wright, L. R. Wescott, and D. J. Brown. December 6, 1963. 51 p. Tech. Note 40-13 (PB151399-13). Mean electron density

variations of the quiet ionosphere, No. 13: Summary

of one year of data - May 1959 - April I960, J. W.

Tright. April 15, 1962. 50 p. Tech. Note 59 ( PB161560). Measurements and standards

in plasma-physics and astrophysics at the National

.Bureau of Standards The National Bureau of Standards has embarked on a

special program to unify and accelerate its research on

hot gases. This work will provide data and theory presently required for the quantitative interpretation of astro- physical and geophysical observations and the measure- ment of properties of plasmas in the laboratory. The data, measurement techniques, and theoretical methods of anal- ysis draw on activities in the fields of atomic and molecular physics, statistical mechanics and thermodynamics,

fluid mechanics, and theoretical astrophysics and geophysics. Both the Washington and Boulder laboratories of the NBS are participating. This Note describes the technical objectives of the program and includes in appendices a se- lected list of papers published at the NBS for the period 1955-1959 and a partial list of Bureau participants. July

I960. 31 p.

Tech. Note 60 (PB161561). Amplitude and phase of the low- and very low-radio frequency ground wave,

J. R. Johler, L. C. Walters, C M. Lilley Graphs and tables of the low- and very low-radiofre- quency ground wave are presented as a function of fre- quency, 100 c/s to 1000 kc. June 1, I960. 40 p. Tech. Note 61 (PB161562). Proceedings of the I960 con- ference on the propagation of ELF radio waves,

J. R. Wait On January 26, I960 a one-day conference on the prop- agation of extremely low frequency radio waves was held. Papers based on some of these oral presentations are published in the July - August and September - October

(I960) issues of the Journal of Research of the National Bureau of Standards, Section D. Radio Propagation. June

I960. 25 p. Tech. Note 62 (PB161563). Rapid determination of the

order of chemical reactions from time-ratio tables,

J. H. Flynn A table of ratios of reaction times corresponding to '15%/5%, 20%/10%, . . . , 95%/85% reaction for orders of chemical reaction from -10 to +10 is presented. Use of

this table allows the rapid calculation o>f the order of chemical reactions that are kinetically simple and in- volves only one subjective step. Methods are discussed

for interpreting deviations from constant order resulting from errors in the initial times and concentrations, from

errors in stoichiometry, and from the reaction following a more complicated rate expression. August I960. 19 p. Tech. Note 63 (PB161564). Single scattered neutrons

from an isotropic point source, E. R. Mosburg, Jr., W. M. Murphey A calculation was made to determine the number of particles from an isotropic source which will reach a detector

after scattering once in the medium surrounding the detector and source. The simple result obtained is applicable when the separation of the detector and the source is much

less than the mean free path of the particle in the medium. The particular case of 14.1 Mev neutrons in air was considered. It was found that 44 percent of the single scat- tered neutrons had scattering angles of less than 30 de- grees. July I960. 10 p. 235
Tech. Note 64 (PB161565). Design and operation of the ceilometet computer, P. Meissner The ceilometer computer has been developed to provide

a display and electrical readout of cloud-height information for use with an automatic weather station. The computer receives an analog signal from the detector of a rotating-beam ceilometer, and determines the height at which cloud indications occur. A small magnetic storage drum contains ten minutes of cloud-height information which is continuously updated, and these data are ana- lyzed for the following factors:

1) Predominant cloud height over the past ten minutes,

2) Maximum and minimum height at which significant cloud occurences were observed,

3) Number of cloud observations up to a selected cri- tical altitude. The computer is a wired-program machine constructed

of transistorized plug-in packages. Several modes of manual operation have been incorporated for testing and maintenance purposes. October I960. 71 p. Tech. Note 65- Unassigned.

Tech. Note 66 (PB161567). Radio refractometry, J. W. Herbstreit A brief review is given of recent progress in the tech- nique of measuring the radio refractive index of the atmosphere, together with applications of these measurements

to radio propagation phenomena. July I960. 18 p. Tech. Note 67 (PB161568). On the nature of the crystal

field approximation, H. Goldberg and C. M. Herzfeld A new method is developed for the treatment of molecular interactions, and is applied to a system consisting of

a hydrogen atom in a 2p state and a hydrogen molecule

in the ground state. The interaction of these two species

is calculated using ordinary crystal field theory and also

the new method. A comparison of the results shows some

of the shortcomings of the conventional crystal field theory, and provides corrections to it. The new method

consists of 1) expanding all electron terms of the total Hamiltonian for the system which involve interactions between the atom and the molecule, thus transforming the

interaction Hamiltonian into sums of products of oneelectron operators, and 2) of using properly antisymmetrized wave functions made up of products of atom and molecule

eigenfunctions. The calculations show the effect of the neglect of overlap and exchange in ordinary crystal field theory.

All calculations and results are presented in full detail. Transformations of three-center to two-center integrals

are given explicitly. October I960. 93 p. Tech. Note 68 (PB161569). Transistorized building blocks for data instrumentation, J. A. Cunningham

and R. L. Hill The National Bureau of Standards has developed a numberof modular transistorized digital circuits that have

been used in automatizing many data recording and pre- liminary processing tasks encountered in its scientific operations. These versatile building blocks can be con- nected together systematically to form digital circuits

that accept raw data from experimental equipment and

transpose these data into a form suitable for input to a high-speed electronic computer. These blocks can be used where: 1) data are produced in large volumes; 2) data taking is extremely fast, extremely slow, or extremely precise; 3) a need exists to minimize human error, tedi- um, and eyestrain; or 4) computation is extensive. This

report describes 5 major packages and 8 special-purpose packages. July I960. 71 p.

Tech. Note 69 (PB161570). Low- and very low-radiofre- quency model ionosphere reflection coefficients, J. R.

Johler, L. C. Walters, and J. D. Harper, Jr. The results of extensive computations performed during

the course of a theoretical investigation of a sharply bounded model ionosphere for low- and very low-radiofre- /juency wave propagation are presented in the form of graphs and tables. July 1, I960. 135 p. Tech. Note 70 (PB161571). Vapor pressures of organic compounds in the range below one millimeter of mercury, E. E. Hughes and S. G. Lias Data for vapor pressures less than one millimeter of mercury for over three hundred organic compounds have

been collected. The values are presented in tabular form. No attempt has been made to evaluate the reliability of these data except where several investigators have stud- ied the same compound over the same pressure range. A brief discussion of the methods and instruments which have been used to measure low vapor pressures is in- cluded. October I960. 24 p. Tech. Note 71 (PB161572). Calibration of five gammaemitting nuclides for emission rate, J. M. R. Hutchinson

Mercury-203 and niobium-95 were calibrated by a Arrfi-y coincidence method for y-emission rate, zinc-65 by comparison with the 1.12 Mev peak of scandium-46, sodium-22

by a y-annihilation-quanta coincidence method and by a

triple coincidence method.and strontium-85 by x-y coinci- dence counting. The accuracy of the calibration in all cases was ±2%. The half-life of the isomeric state of rubidium-85 was measured and found to be .98 micro- seconds. July I960. 23 p.

Tech. Note 72 (PB161573). Table of magnitude of re- flection coefficient versus return loss (L R =20 log10 R. W. Beatty and W. J. Anson A table of the magnitude of reflection coefficient |T| versus return loss L^is presented. The table covers the range 0-20 decibels for intervals of 0.001 decibel. In addition, intervals of 0.0001 decibel

iare provided over the range 0-0.01 decibel. The accuracy

is seven significant places as given with an occasional 236
error of one digit in the last place due to rounding. Sep- tember 19, I960. 44 p. Tech. Note 73 (PB161574). Some experiments on the deposition of gases at 4.2° K, T. Braurer

In order to develop some preliminary information concerning the very basic problems of gaseous deposition

at extremely low temperatures, samples of argon, nitro- gen, oxygen, and hydrogen were deposited at 4.2° K, and

variations in some of the parameters associated with these depositions were observed. In addition, samples

of the same gases were passed through an excitation zone prior to deposition, and differences in the deposition behavior were recorded. The pressure downstream

of the deposition region and the temperature within the deposited solids were found, in general, to increase with

flow rate of the depositing substances, and to vary with

time in a manner depending on the density, flow rate, and

state of excitation of the incoming gases. Arrhenius

curves were plotted using warm-up data observed in these experiments and solid-phase transition data determined

elsewhere. Variations in the positions of these plots were sometimes the result of differences in the conditions

of deposition, and at other rimes an effectof the chemical

nature of the gas studied. The experimental behavior of hydrogen, relative to that of the other gases studied, was

observed to be strongly dependent upon its much higher

thermal conductivity. October I960. 30 p. Tech. Note 74(PBl6l575). Scatteringof cobalt-60 gamma

radiation in air ducts, C. Eisenhauer The exposure dose rates due to Cobalt-60 gamma radiation scattered in small air ducts in concrete has been measured for ducts with one and two right angle bends. The inside corner of a right angle bend has been found to be an important source of scattered radiation. Results

are analyzed in terms of solid angle relationships and

attempts are made to extrapolate experimental results to other duct configurations. October I960. 23 p. Tech. Note 75 (PB161576). Soviet research in field electron and ion emission, 1955-1959; an annotated bibliog- raphy, T. W. Marton and R. Klein

Soviet field emission research, as reflected in the technical literature from 1955 through 1959, is the subject matter of this annotated bibliography. Topics include experimental and theoretical work on field electron emission from metals and semiconductors, work functions, phase transformations, adsorption, diffusion, evaporation, surface ionization, and field ion emission. Over one hundred complete references to original publications in Russian and Ukrainian and to a few in Polish, Hungarian, and Czech were selected after an extensive search of the

literature. Full references are given to English translations of the entries whenever available. A list of rele- vant scientific meetings, references, and a brief subject index are appended to the compilation. October I960. 37 p." Tech. Note 76 (PB161577). ISOPAR. Anew andimproved

symbolic optimizing assembly routine for the IBM 650, H. H. Howe ISOPAR is an optimizing assembly routine for use with an IBM 650 computer. It corrects serious shortcomings

in the IBM prepared Symbolic Optimal Assembly Program, commonly known as SOAP and a later modification called SOAP II. July 19, I960. 107 p. Tech. Note 77 (PB161578). VHF and UHF power generators for RF instrumentation, A. H. Morgan and P. A. Hudson The work described in this report was undertaken to provide certain projects in the Radio Standards Division

with a series of fixed frequency rf generators having good

stability with respect to both frequency and power output

level and continuously adjustable in power output from

1 to 100 watts. Prior to the completion of the generators

the work of some of the standards projects was seriously hampered because the rf generators available were lacking

in either sufficient power output, frequency stability, or power output stability. For example, bolometer bridges used for rf voltage and power measurements are sensitive

to power input variations as small as a few parts in 10*. Power stability of at least one part in 10 3 is considered

an absolute necessity to obtain measurement accuracies

of from 0.5% to 1%. September I960. 18 p. Tech. Note 78 (PB161579). Oblique incidence receiving antenna array for a relative ionospheric opacity meter,

A. C. Wilson

Experimental measurements incidental to the design of an antenna for a relative ionospheric opacity meter (RIO

Meter) are described. The frequency of operation is 50 Mc. The antenna re- quirements are that the main lobe of the antenna is directed

at 23° above the horizon, the half-power beam-width in the vertical plane does not exceed 10°, the minimum front- to-back ratio is at least 13 decibels, and the side-lobe

levels are at least 10 decibels below the maximum re- sponse in both the E- and H-planes. Since the antenna

is for use in Alaska, it is to be of simple design and

physically able to withstand any anticipated wind and

ice loads. The final antenna design is an array of three stacked

horizontal dipoles with two optimally spaced reflectors behind each dipole to obtain the required directivity. The narrow main lobe of the antenna directed at an angle

of 23° above the horizon is obtained by properly spaced

and phased dipoles above the ground. The half-power beamwidth in the vertical plane is computed to be The front-to-back ratio over the rear 180° sector is not

less than 20 decibels, and the half-power beamwidth in the E-plane is 74°. The complete receiving antenna arrays were constructed,

adjusted, and tested. These antennas were installed in Alaska where they are now in use by an auroral trans- mission loss project. November I960. 14 p. Tech. Note 79 (PB161580). VHF radio propagation data

for Cedar Rapids-Sterling, Anchorage-Barrow, and

Fargo-Churchill test paths, April 1951 through June

1958, G. R. Sugar and K. H. Sullivan During the past nine years numerous studies of vhf ionospheric scatter propagation have been performed at the National Bureau of Standards and many of the results

of this extensive program of research have already been 237
published. However, thus far there has not been any

publication of most of the basic signal strength data taken

during the program. This note, containing the basic ob- servations for some of the experimental paths, has been

prepared in order to make these basic data readily available to those concerned with studies of ionospheric propagation. September 1, I960. 258 p. Tech. Note 80 (PB161581). Bibliography of tropospheric

radio wave scattering, R. L. Abbott This bibliography emphasizes tropospheric scattering, or radio waves by turbulence-induced inhomogeneities of

dielectric constant in the atmosphere, along with papers

and reports on related topics such as turbulence theory and measurements, statistics, and instrumentation. No- vember I960. 79 p. Tech. Note 81 (PB161582). An evaluation of Kacser's second order Born approximation to the bremsstrahlung

differential cross section, G. S. Ofelt The second order term, as derived by C. Kacser, of the Born approximation series for the bremsstrahlung cross

section differential with respect to photon energy, photon

direction, and final electron direction averaged over initial and summed over final polarization states has been put

in a form that admits to numerical evaluation for the coplanar case. The results are valid for relativistic as well as non-relativistic incident electrons. Completely general (non-coplanar) expressions are included for the first order (Bethe-Heitler) and second

order terms. However, the latter has not been given in a form admissible to numerical evaluation. Tabulated values are given for the case of the incident

electron kinetic energy = 500 kev, photon energy = 450

kev, and photon direction 20° from the incident electron

direction. For this case the second order term increases

the differential cross section by about 50 percent for Al

and about 200 percent for Au for the various angles of electron emission. A rough approximation to the integrated

(over final electron direction) cross section is included and a comparison is made with experimental values. The

inclusion of the second order term brings the theoretical cross section closer to the experimental values. June

1961. 19 p. Tech. Note 82 (PB161583). A survey of spread-F, F. N. Glover Examples of spread-F forms occurring at different lati- tudes are presented, illustrating the classification of spreadinto range type and frequency type. The occurrence

patterns of spread-F at different latitudes are correlated

with other geophysical phenomena. Magnetic latitude and

time within the sunspot cycle appreciably affect the pattern of spread occurrence. Instrumental techniques and

their advantages for spread studies are outlined. The

principal theoretical explanations of spread-F are summarized. A single mechanism need not be postulated as

responsible for all types of spread occurrence or at all latitudes. November I960. 67 p. Tech. Note 83 (PB161584). On the scattering of y

rays by nuclei, U. Fano The theory of scattering by electric dipole interaction

is developed by tensorial techniques, which permit an

early separation of geometric and dynamic factors. The

geometric relationships are formulated in terms of vari- ables that represent arbitrary partial polarization of the incident and scattered y rays. The relevant dynamic

properties of a nucleus are represented by a scalar, a

vector, and a quadrupole polarizability. These polari- zabilities correspond respectively to the values 0, 1, and

2 of the quantum number j which indicates the angular momentum transfer in the scattering process. The analysis of scattering according to angular momentum transfer

is compared to the ordinary theory of angular distributions. The nuclear polarizability is discussed from the standpoint of different models. The magnitudes of the

three polarizabilities can be determined by experiments

with unpolarized nuclei but with some degree of circular polarization of the y rays; linear polarization contributes no additional information. Nuclear polarization is re- quired to determine the phases of the polarizabilities November I960. 25 p. Tech. Note 84 (PB161585). Bibliography on ionospheric

propagation of radio waves (1923-1960), W. Nupen

This bibliography contains 1,400 references and abstracts on ionospheric propagation of radio waves. October I960. 435 p. Tech. Note 85 (PB161586). A survey of computer pro- grams for chemical information searching, E. C. Marden

and H. R. Koller The authors describe twelve computer systems for searching chemical literature. Preceding discussion of

the computer systems, a brief description is given of

different chemical notation systems, indexing and abstracting procedures, punched card systems (which were

the forerunners of the computer systems), and special purpose literature searching machines. A short discussion

of the difficulties (linquistic and other) attendant to liter- ature searching terminates the paper. February 1961. 84 p. Tech. Note 86 (PB161587). The NBS meteor-burst prop- agation project - a progress report, C. E. Hornback,

L. D. Breyfogle, and G. R. Sugar This report briefly describes a meteor-burst propagationstudy program at NBS-Boulder Laboratories and presents some of the preliminary analysis results. Observations have been made with scaled systems over three different paths (Long Branch-Table Mesa, Norman-Fargo, and Bar- row-Kenai) at frequencies of 30, 50, and 74 Mc/s. The

recorded data is processed by a combination of manual

and automatic methods. The preliminary results show

about a 10 db diurnal variation in threshold for a constant

duty-cycle. Thresholds for a constant duty-cycle were observed to have an approximate frequency dependence

relative to 30 Mc/s of 15 db lower for 50 Mc/s and 30 db lower for 74 Mc/s. There was no statistically-significant difference observed in the occurrence of meteor-bursts

from a Poisson distribution. March 31, I960. 43 p. Tech. Note 87 (PB161588). A theoretical study of spo- radic-E structure in the light of radio measurements,

K. Tao The theoretical aspects of the mechanisms of sporadic-E

reflections are described from both the standpoint of a 238
thin layer and a scattering model. For the thin layer model, thin dielectric layers which have various distribu- tions of electron density are considered. It is also pointed

out that the scattering theory for which an auto-correlaUon

function of the fluctuation of electron density is given by modified Bessel functions of the fourth through the seventh

order is an available model for sporadic-E scatter. Moreover blobs of ionization which have a horizontal scale of

the order of 200 m and a vertical scale of about 50 m are considered for sporadic-E scatter. The frequency and

distance dependences of the oblique VHF propagation by means of the sporadic-E layer are discussed by comparing

the theoretical results with experimental evidence. January 1961. 38 p.

Tech. Note 88 (PB161589). Prolonged space-wave fade- outs in tropospheric propagation, A. P. Barsis and

M. E. Johnson

This paper contains the results of studies performed

during the last several years on the short-term variability

of tropospheric signals received over within-the-horizon

paths. Signal variations of this type have been termed

"prolonged space-wave fadeouts," as they are mainly

characterized by reductions in signal level to many deci- bels below presumably constant values determined from geometrical optics methods. The data described here were obtained from measurements over propagation paths

in the Pacific Coast region of Southern California, and

the continental region of Eastern Colorado. Fadeouts

are analyzed as a function of carrier frequency, path

characteristics, and meteorological parameters. The

study also includes an evaluation of fadeouts observed

over a path using a mountain peak as a diffracting knife- edge like obstacle between transmitter and receiver. February 8, 196l. 70 p. Tech. Note 89 (PB161590). Collisions of liquid drops

with liquids, O. G. Engel The information available on collisions of liquid drops

•with liquids is reviewed. Measurements of the depth and

diameter of the cavity produced in the target liquid made

on G. J. Franz's high-speed motion pictures of collisions

of waterdrops with water are reported. The measurement

data are considered to be of a preliminary nature. The

most important provisional observations drawn from them

are: the cavity depth-versus-time curve is a parabola or

ellipse tangent to the depth axis at the origin; the depth/

diameter ratio of the cavity varies with time elapsed since

the collision and has a value of 0.5 at only two points in time. An equation for maximum cavity depth is derived on the basis of the three assumptions that the impinging

drop is spherical, that the cavity is hemispherical, and

that the volume of the cavity is proportional to the kinetic energy of the drop. Test of the equation with the measurement data indicates that the assumptions are reasonably good in the low free-fall velocity range. Apparatus that

is now being assembled at the National Bureau of Standards to obtain more accurate data and to carry out an ex- haustive study of this type of collision is described. May 1961. 30 p.

Tech. Note 90 (PB161591). Flux switching mechanisms

in ferrite cores and their dependence on core geometry,

G. W. Reimherr

Plots of reciprocal switching time against applied magnetic field for ferrimagnetic or ferromagnetic cores

usually show two or three interconnecting straight line segments. Different theoretical flux reversal mechanisms

have been proposed for each segment. Descriptive models

of these mechanisms are presented. Switching curves

are shown for seven ferrite cores of different composition, and for a ferromagnetic tape core. The inverse slope

of the switching curve known as the switching coefficient, was calculated for these cores and it is shown to agree

well with values given by other experimenters and by

theory. Experiments were made to ascertain whether the flux reversal mechanisms are affected by core geometry. Nine

ferrite cores were separated into four groups. The cores

of each group had identical chemical composition and

originally had nearly equal cross sections and identical switching curves. The cores of each group were then ground into different cross sections, at least one being

rectangular and the other being square or circular, and

switching curves were again taken of these cores. No

effect of geometry upon the flux reversal mechanisms was

found. Several factors which may affect the switching

coefficient are given. May 1961. 45 p. Tech. Note 91 (PB16 1 592). Determination of the K

fluorescence yield of argon by proportional-counter

spectrometry, C. Godeau A proportional counter spectrometer designed for investigation of low energy particles has been used for the determination of the K fluorescence yield of argon. X-rays following K capture in iron-55 were used as a source for excitation of the argon atom and the spectrum was measured. The K fluorescence yield oj^ was deduced

from the comparison of the two peaks shown in the spectrum and corrections were made, taking into account

photoelectric absorption in outer shells and reabsorption

of secondary X-rays in the counter. The fluorescence yield tu^. of argon was found to be

0.087 ± 0.007. May 1961. 13 p. Tech. Note 92 (PB161593). Research program of the Radiation Physics Division, National Bureau of Standards, W. R. Ney and L. S. Taylor This report describes the research program of the Radiation Physics Division. It includes a statement of the mission of the division, a listof senior staff members,

descriptions of the facilities available to the division

staff, and detailed descriptions of the research programs

of the various sections of the division. May 196l. 47 p. Tech. Note 93 (PB161594). An experimental study of beta decay using the radiations from oriented nuclei, D. D. Hoppes The angular distribution of electrons with respect to the nuclear spin direction is shown to furnish information 239
about the relative contribution of the different operators

in first-forbidden beta decay. An experimental determination of two coefficients in a Legendre polynomial expansion of this distribution function for a transition in the decay of cerium-141 is made by observing the radiations from both aligned and polarized nuclei. Together with calculations based on reliable shell model assumptions

this information allows the determination of the relative contribution of the significant relativistic operator a The result Wxr) = -29.4 ± 1.5 is compared! with some general estimates of this quantity. August 1961.

Tech. Note 94 (PB161595). Bibliography on meteoric

radio wave propagation, W. Nupen

This bibliography constitutes the second in a series

of four or five being prepared by Meteorological Abstracts

for the Boulder Laboratories of the National Bureau of Standards. The general subject area of these compila- Uons »s Propagation of Electromagnetic (Radio) Waves

in the Atmosphere. - The first, comprising over 1,400 titles, was concerned

with normal or abnormal Ionospheric Propagation. The present bibliography consists of 368 abstracts on Meteor Trail Propagation, arranged alphabetically by

author and including articles dating from the earliest studies by Nagaoka (B-254) in 1929 on the effect of meteoric ionization on radio communication, to the numer- ous papers reflecting the recent emphasis on meteor burst communication. No material published after I960 has

been included. May 29, 1961. 115 p. Tech. Note 95 (PB16 1 596). Characteristics of point-to- point tropospheric propagation and siting considerations, R. S. Kirby, P. L. Rice, and L. J. Maloney An atmospheric duct is defined as occurring when

geometrical optics indicates that a radio ray passing up- wards through the atmosphere is sufficiently refracted

that it travels parallel to the earth's surface. Maximum

observed incidence of ducts was determined to be 13%, 10%, and 5% by analysis of three to five years of radio- sonde data for a tropical, temperate, and arctic location, respectively. Annual maxima are observed in the winter

for the arctic and summer for the tropics. Arctic ducts

arise from ground based temperature inversions with the ground temperature less than -25° C; temperate zone ducts

arise from radiation inversions and accompanying humidity lapse; while tropical ducts occur with slight temperature and humidity lapses when the surface temperature is 30° C and greater. The mean initial elevation angle of a radio ray trapped by these ducts is found to be about 3 mr, with the maximum value about 5.8 mr. The

steepest gradient of N observed is -420 N units/km. Observed ducts trap radio-waves of frequency > 1 kMc

at all locations for at least 50% of the time. Fading regions arising from abnormal defocussing of

radio-rays passing from an elevated antenna down through

the duct to a ground-based receiver are analyzed. The

horizontal extent of these regions is determined for the same arctic, tropic, and temperate conditions given above. June 16, 1961. 38 p.

Tech. Note 96 (PB161597). On the climatology of ground based radio ducts and associated fading regions, E. J. Dutton This discussion is primarily intended to provide an understanding of the fundamental characteristics of tropospheric propagation with particular application to point-to-point telecommunications. The concept of service probability is introduced and its application to the planning of tropospheric circuits. This concept pro- vides an objective means for taking into account the variables and uncertainties connected with a planned

circuit so that a reasonable balance can be made be- tween the cost of installation and operation as compared

with the probability of success. Principles of siting based on taking advantage of favorable technical characteristics of the sites as well as associated considerations such as radiation hazards are discussed. Simple methods of making preliminary estimates of performance adequate for field use are presented. October 19, 1961. 102 p. Tech. Note 97 (PB161598). Techniques for computing

refraction of radio waves in the troposphere, E. J. Dutton and G. D. Thayer

Eight methods of computing atmospheric refraction of

radio rays are discussed with appropriate theoretical background. These methods are:

(1) The high-angle, or astronomical, refraction case

(2) The statistical method

(3) The low-angle, or terrestrial, refraction case

(Schulkin's method)

(4) The four-thirds earth model

(5) The exponential model

(6) The initial gradient correction method

(7) The departures-from-normal method

(8) A graphical method (Weisbrod's and Anderson's

method). Sample computations are included for each of the above

methods. October 17, 1961. 55 p. Tech. Note 98. Synoptic radio meteorology, B. R. Bean,

J. D. Horn, and L. P. Riggs A survey of some of the advances in the field of synoptic radio meteorology is presented. The develop- ment of representative refractive index profiles for major

air mass types is reviewed. Included is a description of several refractive index parameters currently in use by

radio meteorologists. Two reduced-to-sea-level index

forms developed at the National Bureau of Standards are used to illustrate the three-dimensional structure of a broad-scale storm system traversing the North American

continent. October 1962. 87 p. Tech. Note 99. A survey of the techniques for measuring

the radio refractive index, R. E. McGavin The radio refractive index can be measured either

directly or indirectly. The former method is utilized by

radio frequency refractometers; the latter method involves measurement of temperature, pressure and humidity and 240
conversion to refractive index. In terms of convenience and accuracy the direct method is superior; however, lack

of the universal use of refractometers requires the use of weather service type of data for the bulk of refractive index structures. Meterological sensing is limited mainly by the inaccuracy in measuring humidity which

under ideal conditions appears to limit the accuracy to ± 1.0 N. Gradient measurements utilizing radiosondes

reflects an accuracy no better than ± 3 N units. Radio

frequency refractometers are capable of accuracies as much as an order of magnitude better than that achieved

by meteorological sensors. Lightweight refractometers have been devised for balloon-borne and dropsonde measurements reflecting accuracies inferior to the conventional refractometer but superior to the radiosonde. May

196 2. 37 p. Tech. Note 100. Required signal-to-noise ratios, RF

signal power, and bandwidth for multichannel radio communications systems, E. F. Florman and J. J. Tary A method is outlined for determining the relationships between the grade of performance, or message error rate, of a radio communication system and the system parameters. Results are presented in the form of design equations and system-design curves. The system parameters and variables considered are the following definable and

measurable factors: signal-to-noise ratios, carrier-signal power level, message load, receiver noise figure, etc. These factors are used with the design curve scales as normalizing factors in order to yield quantitative results. January 1962. 181 p. TN101. Volumes 1 and 2. Transmission loss predictions for tropospheric communication cir- cuits, P. L. Rice, A. G. Longley, K. A. Norton, and A. P. Barsis These volumes present methods for predicting cumulative distributions of transmission loss for a wide range of frequencies over all types of terrain and in several ch- The main text of these volumes describes

nethods that are applicable to the great

ority of tropospheric communication links. Additional

information required for unusual paths, mathematical ex- pressions useful in programming the methods for a digital computer, and some specific examples of the application of these methods are also given.- May 7, 1965. Volume

2, 183 p- Tech. Note 102 (PBl6l603). Performance predictions

for single tropospheric communication links and for several links in tandem, A. P. Barsis, K. A. Norton,

P. L. Rice, and P. H. Elder Performance of long-distance tropospheric communication circuits, either singly or in tandem, is predicted in terms of the probability of obtaining a specified grade of service or better for various percentages of time. The

grade of service is determined by the minimum acceptable

ratio of hourly median predetection-RMS-signal-to-RMSnoise for the type of intelligence to be transmitted. The standard deviation of prediction errors depends

upon the percentage of hours the specified grade of service is required and on parameters characterizing the propmatic regions, point-to-point

agation path. The possibility of reducing this standard

deviation by making path-loss measurements is discussed.

It is shown that no improvement is possible unless the

test path is very nearly the same as the proposed operational path; in particular, unless the test path and operational paths have terminals less than one mile apart it is shown to be doubtful in most cases whether the ob- servations will be useful in improving the reliability of the predicted performance of the proposed system. As- suming that the test path and proposed operational paths

are identical, estimates are given of the number of days

of observation required to halve the prediction uncertainty or, alternatively, to reduce it to 3 db; in some cases

several years of observations are required. A tutorial discussion is given in Appendix III of the concepts of the effective noise figure and the effective input noise temperature of a receiving system. August

1961. 154 p. Tech. Note 103. Equipment characteristics and their relation to system performance for tropospheric communication circuits, A. F. Barghausen, F. O. Guiraud,

R. E. McGavin, S. Murahata, and R. W. Wilber The performance of a tropospheric communications

system, either within the line of sight or beyond the line of sight, is directly dependent on the operating characteristics of the equipment. Performance predictions of a communications system

are made on the basis that equipment will operate in a prescribed manner. The degree of success of the communications system will depend largely upon how well these predicted values correspond to the actual operating

values. Consideration is given to those portions of the equip- ment that have definite effect upon the operating per- formance. Specific items of equipment and methods for determining their performance are considered. Representative results in light of the present state of the art permits an evaluation of an actual system in terms of realizing an "optimum" system.

In systems that do not have the "optimum" characteristics desired, consideration is given to laboratory devices which may alleviate these deficiencies. Future systems should consider incorporating these devices as development permits. January 15, 1963. 173 p. Tech. Note 104. Unassigned.

Tech. Note 105. Unassigned. Tech. Note 106 (PB161607). The integrated starlight over the sky March 1961, L. R. Megill and F. E. Roach

This Technical Note represents an extension of work

published earlier [1]. The amount of light coming from

stars of each magnitude from m = 6 to 18 is presented for every 10° in. galactic longitude and galactic latitudes

0°, -2°, ±5°, ±10°, ±15°, ±20°, ±30°, ±40°, ±60°, ±70° and

±80°. In addition the total integrated starlight at each

of these points is given, using an extrapolation technique

to estimate the contribution from stars of magnitude

greater than 18. Attention is called to systematic dif- ferences between the total integrated starlight based on

star counts and recently measured values by Elsasser 241
and Haug. A table converting from galatic to ecliptic and equatorial coordinates is given for convenience. June 1961. 77 p.

Tech. Note 107 (PB161608). A fixed frequency, 9.1 Gc,

field intensity recording receiver with extremely narrow

bandwidth, R. W. Hubbard and J. V. Cateora A specialized field intensity recording receiver de- signed to operate in the X-band (9.1 Gc) portion of the

radio spectrum is described in this paper, and its operational characteristics presented. The receiver was de- veloped by the Radio Propagation Engineering Division, Central Radio Propagation Laboratory, National Bureau

of Standards. Its purpose is to provide an advanced

system to augment the facilities of the CRPL in a pro- gram of basic tropo spheric radio propagation research. June 1961. 75 p.

Tech. Note 108 (PBl6l609). A compilation of the physical equilibria and related properties of the hydrogencarbon monoxide system, D. E. Drayer and T. M. Flynn

Literature data have been used to calculate K-factors

for the hydrogen-carbon monoxide system over the range

of 68.2 to 122.2° K and 10 to 225 atmospheres. K-factors

are presented graphically for eight isotherms over this range. Published data on the solid-vapor region are presented

separately as composition versus pressure at constant

temperature. A bibliography of approximately 450 references is also presented on related properties for this system and for the pure components. May 196l. 81 p.

Tech. Note 109 (PB161610). A compilation of the physical equilibria and related properties of the hydrogen- helium system, T. M. Flynn and D. E. Drayer Published data have been used to calculate K-factors

for the helium-hydrogen system over the range of 17.4°

to 21.8° K and 2 to 32 atmospheres pressure. K-factors

are presented graphically for three isotherms over this range. A bibliography of approximately 290 references

is also presented on related properties for this system

and for the pure components. June 1961. 50 p.

Tech. Note 110 (PB161611). A compilation of the physical equilibria and related properties of the hydrogennitrogen system, D. E. Drayer and T. M. Flynn

Published data have been used to calculate K factors

for the hydrogen-nitrogen system over the liquid-vapor range of 68.2 to 122.2° K, and 10 to 225 atmospheres. K- factors are presented graphically for eleven isotherms

within this range. Published data on the solid-gas and solid-liquid regions

are presented separately as composition versus pressure

at constant temperature. A bibliography of 250 references pertaining to the hy- drogen-nitrogen system is included. May 1961. 62 p.

Tech. Note 111 (PB161612). Data reduction instrumentation for radio propagation research, W. E. Johnson An approach is given to the overall problem of Data

Reduction Instrumentation for Tropospheric Radio Propagation Research at the National Bureau of Standards. The need for early coordinated planning between those responsible for the data taking, data analysis, and data

reporting is emphasized. A multi-channel, magnetic tape system is described as a successful solution to the data

taking problem. Three special purpose computers are described as solutions to the data analysis problem; a Spectrum Analyzer, a Distribution Analysis System, and

a Correlation Computer. Three computation aids are described as aids for the reduction of data not recorded on magnetic tape: the Refractive Index Computer, the Amplitude Distribution Analyzer and Chart Scaler, and

the Punch Tape Data Translation System. July 1961. 32p.

Tech. Note 112 (PB161613). Automatic character recognition: a state-of-the-art report, M. E. Stevens A state-of-the-art report on current progress in auto- matic character recognition is presented. Areas of applicability and possibilities for controlled solutions to automatic character reading problems are discussed. Some commonly used methods for character recognition,

the steps involved in a generalized recognition process, and comparative characteristics of certain representative character recognition systems are considered. Prospects

for further progress, including potentially related re- search in pattern recognition, are reported. May 1961. 168 p.

Tech. Note 113 (PB161614). A transistor-magnetic core

digital circuit, E. W. Hogue A digital amplifier of simple noncritical design in- corporating an emitter-follower and a small magnetic

amplifier is described. Timing and some of the operat- ing power are provided by a 300-kc 2-phase 7-volt sine- wave source. In structure and mode of operation, the amplifier is particularly suited for use with two-level diode gating to provide the AND and OR logical operations. A NOT-amplifier provides negation with amplifi- cation. The volt-second transfer characteristic of the stage critically determines the stability of propagation of binary signals. Factors governing the required shape of

this transfer characteristic are discussed. June 1961. 146 p.

Tech. Note 114 (PB161615). Mode calculations for VLF

propagation in the earth-ionosphere waveguide, K. P. Spies and J. R. Wait The concept that radio waves are channeled between

the earth and the ionosphere as in a waveguide has been

very useful at VLF. Unfortunately, the computational aspects of the problem are quite complicated even when

the model is highly idealized. The difficulty stems from

the grazing nature of the modes of lowest attenuation. 242
Some progress has been made recently by utilizing higher

order approximations for the various spherical wave

functions which enter into the problem. In this way the influence of earth curvature has been fully accounted

for. The detailed theoretical aspects and essential deri- vations have been presented elsewhere, Wait, I960, 1961. Here the actual computational procedure is outlined and some numerical results are presented. It is believed

that the methods used are of general interest and also have possible application to propagation of acoustic and

seismic waves in curved layered media. July 17, 1961. 98 p. Tech. Note 115 (PB161616). Load carrying capacity of gas-lubricated bearings with inherent orifice compensation using nitrogen and helium gas, H. Sixsmith, W. A. Wilson, B. W. Birmingham A static flat plate test apparatus was used to deter- mine the load carrying capacity of circular thrust plates. The load carrying capacities of nine different pad and

orifice combinations were determined experimentally using nitrogen and helium gas as the pressurizing medium. Actual load vs. plate separation curves were de- veloped at plate supply pressures ranging from 25 to 250 psig. The paper includes a description of the ap- paratus in addition to the curves which were developed

for»gas-lubricated bearing design. August 196l. 35 p. Tech. Note 116 (PB161617). Astrophysical and plasma

physics research at the National Bureau of Standards —

Highlights for 1961, L. M. Branscomb, K. E. Shuler, and J. A. Suddeth

Highlights of astrophysical and plasma physics re- search at the National Bureau of Standards are given for the period of July I960 through June 1961. Included as appendices are a selected list of papers published by NBS participants during the period 1955-1960 and a partial list of Bureau participants. The technical objectives of the program can be found in NBS Technical Note 59. October 1961. 38 p. Tech. Note 117 (PB161618). Variations in frequency of occurrence of sporadic E, 1949-1959, W. B. Chadwick The question of the dependence of sporadic E on the sunspot cycle has largely been unresolved, with many

investigators obtaining conflicting answers. In this report results are given covering daily-hourly values of fEs for eleven years at three ionosphere sounding stations, College, Washington, and Huancayo, chosen as

representative of the three main sporadic-E zones. These

stations experienced a minimum of equipment changes

of location during this period. Scaling procedures were

monitored over the eleven years by a data quality-control group at the National Bureau of Standards. The period included the highest average sunspot number for over 200 years. Correlation coefficients for yearly count of fEs>5 Mc

vs. yearly average sunspot number were found to be: College, -0.68 (daytime only, -0.63); Washington, -0.52

(night only, -0.52); Huancayo, -0.42 (night only, -0.66).

Various hourly and monthly correlations were obtained. Of the 153 correlation coefficients listed in the paper, 147 are negative. Certain correlations of fEs with magnetic index Ap are presented. The remarkably consistent results obtained

by use of the Phillips formula logi0 P = a + bf, are given. (P = probability of occurrence of fEs>f; f = frequency

(Mc); a, b are adjustable constants). An incidental outcome is the confirming of diurnal and

seasonal trends at stations in the auroral, north temperate, and equatorial zones, making use of many more data

than hitherto available. October 1961. 21 p. Tech. Note 118 (PB161619). A note on the propagation

of certain LF pulses utilized in a radio navigation system, J. R. Johler Low frequency pulses utilized in a radio navigation system can be synthesized and analyzed by a speciali- zation of the general theory of pulse propagation. The

analysis technique required to accomplish such a re- search is detailed, and the introduction of receiver and

detector circuits into such an analysis is described. The time-difference dispersion correction, or the "dis- crepancy correction," for operation of a radio navigation pulse system on either the groundwave time mode or the ionospheric time modes of propagation is defined. October 27, 1961. 23 p. Tech. Note 119 (PB161620). Computer simulation of

street traffic, M. C. Stark This Technical Note describes a digital computer

simulation of vehicular traffic on a section of city street. The study was made for the Bureau of Public Roads by

the Data Processing Systems Division, National Bureau

of Standards, over a period of three years, from July 1958 to June 1961. The narrative of the report is pre- sented first, followed in order by the three summary

Tables, the Figures, and the Appendices. The latter contain text which goes into greater detail and which, in many instances, also refers to the Figures. November

1961. 87 p. Tech. Note 120 (PB161621). A tabulation of the thermo- dynamic properties of normal hydrogen from low temperatures to 300°K and from 1 to 100 atmospheres, J. W. Dean

Pressure, volume, temperature, internal energy,

enthalpy, and entropy of normal hydrogen gas have been

tabulated along isobars in 1°K temperature steps. The

range covered is from the saturation temperature to 300°K and from a pressure of 1 to 100 atmospheres. The source of data is the Research Paper 1932 of the National Bureau of Standards Journal of Research. The

method is described by which the data presented in Research Paper 1932 is reduced to properties directly useful for engineering calculations. A method is also described for estimating the effect of ortho-para compositions upon the tabulated properties. Tabular values are presented in the dimensional units of the metric system. The tabulations are also available

in the dimensional units of the British system as Technical Note No. 120, Supplement A. November 1961. 71 p. 24 3
Tech. Note 120A. A tabulation of the thermodynamic

properties of normal hydrogen from low temperatures to 540 °R and from 10 to 1500 psia, J. W. Dean

Pressure, volume, temperature, internal energy, en- thalpy, and entropy or normal hydrogen gas have been tab- ulated along isobars in 2 °R temperature steps. The

range covered is from the saturation temperature to 540 °R and from a pressure of 10 to 1500 psia. The

source of data is Research Paper 1932 of the National Bureau of Standards Journal of Research. The method is described by which the data presented in Research Paper

1932 is reduced to properties directly useful for engineer- ing calculations. A method is also described for esti- mating the effects of ortho-para compositions upon the tabulated properties. Tabular values are presented in the dimensional units of the British system. The tabulations are also avail- able in the dimensional units of the metric system as Technical Note No. 120. June 1962. 75 p. Tech. Note 121 (PB161622). Precision calibration of RF

vacuum tube voltmeters, L. F. Behrent

Before any rf vacuum tube voltmeter is to be calibrated,

it should be tested for several weeks to determine how

well it may retain its calibration. In this way effort lost

in trying to calibrate it to an accuracy beyond its in- herent capabilities can be avoided. AT voltmeters, Thermal Converters and RF Micropotentiometers as working standards provide simple, accurate and yet

rapid means for calibrating vacuum tube voltmeters. December 1961. 13 p. Tech. Note 122 (PB161623). A survey of the literature on heat transfer from solid surfaces to cryogenic

fluids, R. J. Richards, W. G. Steward, R. B. Jacobs A bibliography of 156 references on heat transfer from

solid surfaces to fluids and related phenomena is pre- sented. Heat transfer data obtained from experimental work on cryogenic fluids are presented in graphical form. The theoretical and empirical formulations appearing in the references are presented. In those cases where suf- ficient information is available to make numerical computations, the formulations are presented graphically to permit comparison with the results of the experimental

work. October 1961. 44 p. Tech. Note 123 (PB161624). Functional and design prob- lems of the NBS RF voltage bridge, L. F. Behrent A detailed presentation is given of the practical solu- tions to the design and operating problems encountered

in constructing a Thermistor Bridge similar to that used

by the NBS for RF Voltage Standardization. Measurement

and operating techniques, critical structural features, as

well as the proper use of available components are dis- cussed. 1961. 36 p. Tech. Note 124 (PB161625). Papers from the Symposium

on Collision Phenomena in Astrophysics, Geophysics, and Masers

This publication comprises three papers on astro- physical and geophysical problems that were presented

at a special symposium at the National Bureau of Stand- ards Boulder (Colo.) Laboratories in June 1961. The

speakers spoke on the question: What are the most im- portant atomic and molecular data needed by theore- ticians for progress in astrophysics, geophysics, and gas

lasers? The papers are entitled "Astrophysical prob- lems" by Michael Seaton; "Collision processes in the high atmosphere" by A. Dalgarno; and "Some problems connected with the analysis of the structure of the solar atmosphere" by Charlotte Pecker. December 1961. 30 p. Tech. Note 125 (PB161626). OMNI FORM I: A general purpose machine program for the calculation of tables

of functions given explicitly in terms of one variable,

J. Hilsenrath and G. M. Galler A general purpose computer program, designed for use

by non-programmers requiring computation of tables of functions written explicitly in terms of one variable, is described. The program features include: 22 types of elementary and special functions; provision for taking of functions of functions, table read-in, flexible print-out; and standardized input to a variety of problems. The

use of the program is illustrated with a number of sample

problems. May 1962. 35 p. Tech. Note 126. Mutual interference between surface and

satellite communication systems, W. J. Hartman and

M. T. Decker

Estimates of the mutual interference expected to occur between the ground terminals of space communications systems and surface point-to-point systems are presented

in a fashion suitable for engineering applications. These

estimates are obtained from recently developed methods

for predicting the transmission loss over tropospheric paths in terms of parameters such as geographic separation, elevation angle of the antenna, antenna patterns, and frequency. It is concluded that these systems can

share the same frequency assignment under suitable conditions. August 1, 1963. 50 p. Tech. Note 127. Bibliography on direction finding and

related ionospheric propagation topics, 1955-1961,

O. D. Remmler

This bibliography is an outgrowth of a conference held

at the University of California at Los Angeles in June

I960 to discuss the aspects of long-range high-frequency

radio propagation that affect radio location and direction

finding, and the related problems of measurement and

analysis. A group of the papers presented at the con- ference was published in the Radio Propagation Section

(Section D) of the Journal of Research of the National Bureau of Standards, May - June issue, 1961. In con- nection with the conference the Numerical Analysis Research Staff of UCLA prepared a bibliography of published work on the conference subject covering the period 1955-1959. For this Technical Note the UCLA

bibliography has been edited and extended to include some papers published in I960 and the first half of 1961. This compilation, though by no means exhaustive, in- cludes over 850 titles on direction finding and related topics ranging from instrumental details through observations and data analysis to theories of propagation. October 1962. 115 p. 244
Tech. Note 128 (PB161629). Bibliography on auroral radio wave propagation, W. Nupen

This is a bibliography containing nearly 300 references

to publications in auroral radio wave propagation. Extensive cross referencing to these publications is also

provided. January 12, 19<52. 108 p. Tech. Note 129 (PB161630). The thermodynamic properties of nitrogen from 64 to 300 °K between 0.1 and

200 atmospheres, T. R. Strobridge The internal energy, enthalpy, entropy, and specific volume of molecular nitrogen are derived and tabulated as functions of temperature and pressure. In addition

to a mathematical model for the pressure-volume-temperature surface, accurate functions are given for the rep- resentation of the vapor pressure, density of saturated

liquid, specific heat of saturated liquid, and the specific heat at zero pressure. Tabular values in British units over the same pressure and temperature range are available as Supplement A of this Technical Note. January 1962. 85 p. Tech. Note 129A. The thermodynamic properties of nitrogen from 114 to 540°R between 1.0 and 3000 psia, T. R. Strobridge The internal energy, enthalpy, entropy, and specific volume of molecular nitrogen are derived and tabulated as functions of temperature and pressure. In addition to a mathematical model for the pressure-volume-temperature

surface, accurate functions are given for the representation of the vapor pressure, density of saturated liquid, specific heat of saturated liquid, and the specific heat

at zero pressure. Tabular values in metric units over the same pressure and temperature range are available as Technical Note

129. February 1963. 85 p. Tech Note 130 (PB161631). Provisional thermodynamic

functions for para-hydrogen, H. M. Roder and R. D. Goodwin New PVT data recently obtained at this laboratory* were used to compute tabular values of internal energy,

enthalpy, and entropy of para-hydrogen. These properties together with specific volume, are presented here as

functions of temperature and pressure. The new data en- compassed the temperature range 20° to 100°K at pres- sures up to 340 atm. Earlier data were used to extend

the tables to 300°K. Above 100°K the upper limit of pressure is 100 atm. The information is also presented

in the form of thermodynamic charts. In supplement A

to this report the thermodynamic tables and charts are presented in units of: psia, degrees Rankin, BTU,

pounds, and cubic feet. December 1961. 142 p. Tech. Note 131 (PBI6I632). Photoionization of atoms and molecules, F. L. Mohler

This is a review of experimental results on photoionization of atoms and some molecules. There are some

quantitative data on all the alkalies, magnesium, calcium and thallium and all rare gases except xenon. Results

are given for the common gases; hydrogen, nitrogen, oxygen, CO, C02 , NO, NaO, N02 , H2 0 and CH4

. Autoionization, excitation to a state above the ionization threshold followed by transition to the ionized state, can be an

important factor. Often the broad autoionization lines mask the true continuum. There are some mass spectro- metric measurements of photoionization products for most

of these molecules. January 1962 . 43 p. Tech. Note 132 (PB161633). Evaluation of convolution

integrals occurring in the theory of mixed path propagation, J. R. Johler and C. M. Lilley The theory of propagation of electromagnetic waves

around a sphere treats the smooth homogeneous case,

i.e., the case in which the surface impedance of the sphere is uninterrupted by an abrupt change in conductivity such as a land/sea boundary. It is known, however,

that such a theory can be extended to treat inhomogeneous, irregular terrain by formulating certain convolution integrals which utilize the smooth homogeneous

formulas. The evaluation of these integrals can be accomplished with dispatch on a large-scale electronic computer with the aid of numerical analysis techniques. The particular case of a land/sea boundary in a smooth,

spherical surface is illustrated for a variety of cases by evaluating the convolution integrals on a large-scale computer. November 8, 1961. 20 p. Tech. Note 133 (PB161634). Historical survey of fading

at medium and high radio frequencies, R. K. Salaman

This condensed historical survey contains information on many of the articles concerned with HF and MF ion- ospheric fading, which have appeared in the literature through I960. The primary emphasis is on an oblique incidence propagation, although many articles per- taining to fading at vertical and near vertical incidence

(incorporating winds experiments) are also included. No

effort was made to include the fading and scintillation studies in the literature of radio astronomy and satellite propagation, where they pertain to determining the char- acteristics of the ionosphere, and not to MF and HF

communication.

Information is available on the origin of fading, the approximate dependence of fading rate on distance and

frequency, and the amplitude distributions for particular transmission paths. This information is, however, not

sufficient either for a realistic estimate of the perform- ance of communication systems or for signal design

consistent with the medium statistics. With respect to communication systems at MF and HF,

information which is needed for analysis and design in- cludes statistics on the amplitude distribution and the fade rate, depth, and duration. Such information should

be obtained as a function of propagation mode, frequency

relative to the predictable MUF, time, season, geographic location, and sunspot cycle. January, 1962.

21 p. Tech. Note 134 (PB161635). Airborne television cov- erage in the presence of co-channel interference, M.T. Decker

Predictions are made of the coverage to be expected;

from a network of airborne television transmitters operat- 245
ing in the UHF television band. Various system per- formance and interference conditions are assumed. The

results are presented in a series of graphs with probability of service as a function of receiving location and

in terms of the total effective area of a station or net- work of stations. System requirements for a coverage ap- proaching 100 percent of a large area are indicated. January 1962. 77 p. Tech. Note 135. (PB161636). Ionosonde observations

of artificially produced electron clouds: Firefly I960,

J. W. Wright Ionospheric soundings obtained at four sites near

Eglin AFB during Firefly I960 are analyzed for Point

Electron Cloud position and movement. The condition

of the ionosphere during these experiments is discussed

and compared with conditions during the Firefly 1959

series. April 1, 1962. 108 p. Tech. Note 136 (PB161637). Some problems of fatigue

of bolts and bolted joints in aircraft applications, L. Mordfin The profuse variety of aircraft bolts which is avail- able has made the evaluation and specification of bolts

for engine and structural use extremely complex, particularly insofar as fatigue and hot fatigue environments

are concerned. The state of knowledge of fatigue of

bolts and bolted joints is surveyed and critically ap- praised in terms of aeronautical practices. Using this material as a basis, recommendations are made regard- ing the evaluation and specification of aircraft bolts

for fatigue situations and regarding the growing problem

of errors in fastener replacement. January 1962. 49 p- Tech. Note 137 (PB161638). A bibliography of the thermophysical properties of oxygen at low temperatures, J. G. Hust, L. D. Wallace, J. A. Crim, L. A. Hall and R. B. Stewart This bibliography of the mechanical, thermodynamic

and transport properties of oxygen below 0 C presents 325 references and is the result of a thorough search of

the world's scientific and engineering literature. In addition to searching abstracting journals and bibli- ographies, the authors reviewed each document for property data and for additional references. Listed for each reference are the properties and the corresponding

temperature and pressure range, together with additional

pertinent information such as the type of data (i. e., whether the data are derived from experimental measurements, theoretical considerations or as a compilation from other sources,) the form and amount of data, etc. An index according to property, sub-indexed for temperature and pressure ranges, and an author index are included. February 1962. 83 p. Tech. Note 138 (PB161639). Vertical cross sections of

the ionosphere across the geomagnetic equator, J. W. Wright. Contours of ionization along a meridian crossing the geomagnetic equator are shown for each hour of a quiet

period in March 1958. The equatorial ionospheric anomalies are thereby illustrated and discussed phenomenologically. The probable physical processes are described. April 6, 1962. 32 p. Tech. Note 139 (PB161640). Siting criteria for HF

communication centers, W. F. Utlaut This note is intended to provide an engineering guide

for the siting of radio terminals for use in long-range HF communication systems. A brief summary of iono- spheric effects upon HF radio signals is presented. Various factors required for an ideal site such as Fresnel zone size and smoothness, noise, antenna height,

vertical radiation angle and the electrical characteristics of the ground are discussed. Standards to guide compromises for practical cases of siting are considered. A partial bibliography which may be useful for those

desiring a greater depth of understanding of the various subjects considered is provided. April 196 2. 40 p. Tech. Note 140 (P8161641). Detailed techniques for preparing and using hard gallium alloys, G. G. Harman

This report presents an expansion and clarification of techniques for preparing and using dental-amalgam-type

gallium alloys for industrial and scientific uses that were

previously published in the Review of Scientific Instru- ments. In addition, new material, such as hardness of

the alloys and discussions of the bonding mechanism

are presented. A different class of bonding alloys based

on the same principals but not incorporating gallium are described, along with application details. April 1962.

19 p. Tech. Note 141. Controlled temperature oil baths for saturated standard cells, P. H. Lowrie, Jr. Two oil baths for the temperature control of saturated standard cells have been designed and fabricated at the Boulder Laboratories of the National Bureau of Standards

for operation at 28°C and 35^ respectively. Short term

control to better than ± 0.001°C with day-to-day vari- ations no greater than 0.002°C has been achieved with

the use of a mercury-toluene thermoregulator incorporating

a temperature anticipating device. The circulating sys- tem limits temperature gradients in the oil to less than 0.001°C across any 10 inch section. The baths in- corporate pre-heat and drain tanks as well as the main

temperature regulated tank to facilitate the insertion and

removal of cells and to minimize oil spillage. August

1962. 33 p. Tech. Note 142 (PB161643). Atlas of Fourier coefficients of diurnal variation of foF2

, W. B. Jones A series of graphical representations is given for il- lustrating the regular and continuous geographic varia- tions of Fourier coefficients a

i and bj obtained from the

diurnal analysis of foF2 monthly medians, including

their main latitudinal trend, mixed latitudinal and longi- tudinal variation, and the effect due to noise (random

fluctuation in the original data). To illustrate the systematic changes in these variations with seasons

and with solar activity, corresponding graphs are given

for four seasonal months for minimum and maximum years

of solar activity (1954 and 1958). April 1962. 105 p. 246
Tech. Note 143 (PB161644). Numerical results for the surface impedance of stratified conductor, C. M. Jackson, J. R. Wait, and L. C. Walters Extensive numerical results are presented for the surface impedance of a horizontally stratified conducting medium. Both two- and three-layer models are con- sidered and the results are given for both normal and

oblique incidence. March 19, 1962. 43 p. Tech. Note 144 (PB161645). Dielectric constant of

liquid parahydrogen, R. J. Corruccini

It is shown that the available data on the dielectric constant of hydrogen conform to the Clausius-Mossotti

equation with the probable experimental errors. The

published data cover temperatures from the triple point (~14°K) to well above room temperature and a thousandfold range of densities. Using an average value of the

specific polarization, tables of the dielectric constant

of the liquid have been computed for temperatures from

the triple point (1 3.803 °K) to 32 °K (58°R) and pres- sures from saturation to 340 atmospheres. April 1962.

11 p. Tech. Note 145. Equatorial spread _F, W. Calvert Most equatorial spread _F may be attributed to coherent

scattering by thin, magnetic-field-aligned irregularities in the ionization of the F_ layer. These irregularities occur in patches which move horizontally. The velocity

of the motion may be measured by (1) the simulation of spread F observed with a single ionosonde, (2) the timing

of the occurrence of spread at spaced ionosondes, or

(3) the measurement of the doppler-shift imposed on

scattered radio waves. The velocities are west-to-east throughout the night, with magnitudes of 100-200 m/s

at sunspot maximum and 50-130 m/s at sunspot minimum. The instability of the _F layer giving rise to the formation

of spread-J^ irregularities could result from (1) upward

electromagnetic drift of the ionosphere as a whole, (2) thermal contraction of the neutral atmosphere after sunset, (3) atmospheric gravity waves, or (4) geomagnetic

support of the _F layer against gravity. August 1, 1962. 107 p. Tech. Note 146 (PB161647). Analysis of ionospheric

vertical soundings for electron density profile data.

III. Procedures for obtaining monthly summary vir- tual height curves for N(h) analysis (composite

virtual height curves), J. W. Wright Procedures are described for use at ionospheric sounding stations for obtaining a median virtual height curve from a number of individual ionospheric vertical soundings. This median curve may then be analyzed to find an electron density profile representative of the

S-ndividual observations. The method is advocated as

an economical way to obtain a world N(h) morphology

and to obtain control data for studies using more detailed and accurate profiles. May 1, 1962. 16 p. Tech. Note 147 (PB161648). Cryogenic temperature measurement with platinum resistance thermometersis fixed-point calibration adequate?, R. J. Corruccini An analysis of extensive calibration data for strain- free "capsule"-type platinum resistance thermometers

indicates that the above question can be answered af- firmatively for temperatures down to 14 °K. For such

thermometers, interpolation can be performed by a numerical procedure that makes use of similarities in the form

of the departures of various thermometers from Matthiessen's rule. Where thermometers of more rugged

construction or lower purity are concerned, the data needed to answer the question are not available. However it is suggested that the answer may still be "yes"

provided the thermometers are sufficiently uniform in their characteristics. April 30, 1962. 12 p. Tech. Note 148 (PB161649). A wire exploder for generating cylindrical shock waves in a controlled at- mosphere, D. L. Jones and K. B. Earnshaw A design for a rugged exploding wire device is given. This device permits the study of strong cylindrical shock waves in controlled atmospheres using optical and microwave techniques. Adequate detail and pic- tures are given to allow construction of the device. May 1962. 6 p. Tech. Note 149. Unassigned.

Tech. Note 150. General characteristics of linear strain gage accelerometers used in telemetry, P. S. Lederer

This paper presents a summary of pertinent information,

theoretical and experimental, on the design characteristics, performance capabilities and limitations of strain gage accelerometers used in telemetry. Properties and

characteristics of unbonded and bonded types of strain gage accelerometers are discussed. June 1962. 57 p. Tech. Note 151. Mode conversion in the earth-ionosphere waveguide, J. R. Wait An approximate theory for conversion of modes in an earth-ionosphere waveguide is propounded. The model

is two concentric spherical reflecting boundaries which have prescribed surface impedances. The localized

irregularity at either the ground or the ionosphere is idealized by a "black screen" which effectively blocks

the cross-section of the waveguide over a portion of its area. In this sense, the method is a union of approximate

Kirchoff diffraction theory and rigorous mode theory. June 8, 1962. 18 p. Tech. Note 152. Coordinated color identifications for industry, K. L. Kelly When a color is to be identified, the preciseness re- quired of the identification is the first consideration. Usually this is determined by a trial-and-error method

which can be both costly and time-consuming. For some

uses, a color name consisting of a hue name or a hue name and modifier is sufficient while for others, a notation of the color in a color-order system will suffice. Where maximum precision is required, the color should

be measured instnimentally and the results expressed

numerically. This paper describes the coordinated

series of five levels of fineness of color identification 24 7
developed by ISCC Subcommittee for Problem 23, the Expression of Historical Color Usage, and is based on

the ISCC-NBS method of designating colors. It lists the methods for changing from one level to another and gives examples of the use of each level. November 1962. 9 p. Tech. Note 153. A general survey of the semiconductor

field, G. w. Reimherr

This survey presents a listing of some of the properties and applications of a number of single-element and binary compound inorganic semiconductors. Brief mention is made of other types of semiconductors (ternary compounds, mixed crystals, alloys, ferrites, and organics). The

toxicity problem presented by many semiconductors is noted. August 1962. 44 p. Tech. Note 154. The thermodynamic properties of helium

from 3 to 300 °K between 0.5 and 100 atmospheres,

D. B. Mann

The specific volume, enthalpy, entropy, and internal energy values of helium are presented in tabular form as

functions of pressure and temperature. Data are tabulated in one degree Kelvin increments

for forty isobars between 0.5 atmospheres and 100 atmospheres. A comparison with previously published data is made where applicable. An expression is presented which represents the pressure-density-temperature surface based on previ- ously published data. The tabulation is presented in the dimensional units of the metric system, but is also available in the di- mensional units of the British system (Supplement A). January 1962. 95 p. Tech. Note 154A. The thermodynamic properties of heli- um from 6 to 540°R between 10 and 1500 psia, D. B. Mann

The specific volume, enthalpy, entropy, and internal energy values of helium are presented in tabular form as

functions of pressure and temperature. Data are tabulated in two degree Rankin increments for thirty-six isobars between 10 psia and 1500 psia. A

comparison with previously published data is made where

applicable. An expression is presented which represents the pressure-density-temperature surface based on previously published data. The tabulation is presented in the dimensional units

of the British system, but is also available in the di- mensional units of the metric system. January 1962.

Tech. Note 155. The energy parameter B for strong blast waves, D. L. Jones. The energy parameter B used in the strong blast wave

equations is calculated for monatomic and diatomic gases. Three geometries, spherical, cylindrical, and plane are considered. Comparisons are made with previously published values of B. Tables and curves of the distribution functions are given for each case. The equations

of the blast waves, in the similarity solution, are compiled for the six cases. An application of the analysis

of a cylindrical blast wave from an exploding wire is given. July 1962. 26 p. Tech. Note 156. Unassigned.

Tech. Note 157. Information selection systems re- trieving replica copies: A state-of-the-art report, T. C. Bagg and M. E. Stevens A state-of-the art survey on information selection sys- tems that retrieve replica copies of selected items as the products of search, has been conducted by the Research

Information Center and Advisory Service on Information Processing, National Bureau of Standards, under the sponsorship of the Council on Library Resources, Inc. After discussion of the general historical background of

the development of such devices, 15 specific systems employing search-type selection principles are described.

In addition, microfilm aperture card systems and related devices as used for address-location retrieval are briefly discussed. In general, it is concluded that many advantages of compressed data storage, integral indexing, mechanical selection, and graphic facsimile-copy output can

be achieved through use of currently available technology. The principal problems remain those of initial human anal- ysis of document content, of effective man-machine communication, and of determination of realistic user require- ments. A bibliography of several hundred literature refer- ences pertinent to the survey is included. December

31, 1962. 173 p. Tech. Note 158. Efficient use of the radio spectrum,

K. A. Norton Methods are given for determining the transmitter power

required for satisfactory operation in the presence of noise on any given telecommunications link. It is then suggested that sufficiently high power should be used so

that a satisfactory grade of service will be achieved at

all times. The above conclusion has reference only to the problem of reception in the absence of interference

from other telecommunications systems. It is then shown

that optimum use of the spectrum can be achieved only when interference from other signals rather than from noise provides the ineluctable limit to satisfactory reception. The fact that interference, rather than noise, should provide the ineluctable limit to satisfactory re- ception indicates that greater stress should be placed on

the use of various techniques for making systems free of mutual interference rather than designing them simply

with the objective of overcoming noise. Most of the report deals with statistical methods of using the concept of transmission loss on the propagation paths in order to achieve the above described optimum use of the spectrum. April 1962. 77 p. Tech. Note 159. A Fortran code for calculation of eigenvalues and eigenfunctions in real potential wells,

R. S. Caswell A Fortran code has been developed for the calculation

of eigenvalues and eigenfunctions for neutrons in real 248
potential wells. A systematic procedure is given for approximate location of the eigenvalue and an automatic

search procedure to determine the exact location. The

code may be used for either bound or scattering states.

In the case of scattering states, the criterion for maxi- mum scattering (90° phase shift) is used to determine the energy of the state. The eigenvalues are determined by matching the numerically calculated logarithmic derivative (££) inside the nucleus to the appropriate analytical logarithmic derivative for the region outside the nucleus.

In an alternate mode of operation, the outside value of

t£ may be set arbitrarily, and a match made to this value. Sample results for a Woods-Saxon well with spin-orbit coupling for the case of oxygen-l6 are shown. The code

is in Fortran and was written for an IBM 7090 computer. August 1962. 29 p. Tech. Note 160. Emission stabilization of thermionic diode noise sources, M. W. Randall and M. G. Arthur An apparatus is described which is capable of stabi- lizing the d-c plate current of a temperature-limited thermionic diode noise source to better than 0.02 per

cent, which corresponds to a noise power stability of

better than 0.001 db throughout the current range of 1 ma

to 100 ma. September 1962. 9 p. Tech. Note l6l. Evaluation of unexpectedly large radi- ation exposures by means of photographic film, W. L. McLaughlin

Conventional film types used in personnel monitoring

film badges are suitable for measuring X- and Y-radiation exposures only up to 1000 R. By using special processing

procedures, it is possible to extend the range of the less

sensitive component of most commercial film packets up

to at least 10,000 R. Limitations in precision of readings due to changes in rate dependence, energy dependence, and changes in the shape of the characteristic curve in this range are discussed. August 1962. 13 p. Tech. Note 162. Thermal balance in the F region of the atmosphere, D. C. Hunt An investigation is made of thermal mechanisms and

detailed properties of the atmosphere at F-region heights. The method used constructs a thermal model of the atmospheric F region based on experimental data combined with theoretical results and arguments. The heat balance equation for this model is simultaneously solved

with the barometric equation. The resultant mass density

profiles are then compared with observed mass density

profiles to determine how much heating by some external source is necessary in the F-region. Two cases are considered, one in which the time rate of change of temperature is z«ro (quasi-steady state) and

one in which it is not zero (non-steady state). In the

first case a complete solution is obtained. In the second

case only a first approximation is carried out. It is con- cluded that a heat flux of 1.13 ergs/cm2 -sec, originating

in solar electromagnetic radiation, can satisfy the thermal requirements of the atmospheric F-region. The existence

of other heat sources cannot be excluded altogether but

their necessity is ruled out. For a 1.13 ergs/crn 2 -sec

electromagnetic radiation heat flux, a model of height and

time variation of pertinent atmospheric parameters is constructed. These parameters are the temperature, molecular weight, scale height, detailed composition, optical depths, rate of heat generation due to absorption of solar electromagnetic radiation, rate of radiative heat loss, and

the thermal conductivity. The effect of varying the parameters that determine the importance of the terms in the heat balance equation, and of varying the boundary

conditions is tested. It is concluded that the uncertainties in these quantities cannot seriously affect the results obtained. September 1962. 80 p. Tech. Note 163. The construction of calorimeters for the measurement of absorbed dose, B. Petree and G. Ward

Direct measurements of energy locally absorbed in irradiated materials can be made with adiabatic calorimeters of suitable design. Design criteria imposed by requirements of accuracy include limitations on size and

complexity. Small calorimeters of simple design with precision better than one percent at dose rates above

one rad per second have been developed. Details of

fabrication, auxiliary equipment and performance are described. November 1962. 34 p. Tech. Note 164. On plasma collision frequencies pro- portional to energy in the radio wave reflection and

transmission process, J. R. Johler and J. D. Harper, Jr. The high conductivity of the ionosphere in large measure determines the propagation of terrestrial radio waves. The ionosphere can be treated theoretically as a magneto-ionic plasma composed of electrons, ions, and

neutral particles. Certain macroscopic properties of these particles, such as the complex index of refraction, can be deduced from the microscopic particle statistics of ionized gases. These properties can then be applied

directly to Maxwell's equations to determine the reflection and transmission process, provided a suitable composition for the model plasma has been found. The composition of the real ionosphere is not uniform, especially in the vertical direction. Such nonuniformity can be treated theoretically with the aid of a flexible model ionosphere employing the notion of a continuously

stratified plasma. An extensive survey of both the index of refraction of

typical electron-ion plasmas as models of the ionosphere

together with the reflection coefficients is made in this paper to determine the significance of the notion of heavy-particle electron-collision frequencies proportional

to energy. March 1, 1963. 67 p. Tech. Note 165. Fading correlation bandwidth and

short-term frequency stability measurements on a high- frequency transauroral path, J. L. Auterman Measurements of fading correlation bandwidth and of deviations of the instantaneous frequency from the average carrier frequency were made on the 4500-km

auroral path from Barrow, Alaska, to Boulder, Colorado,

at frequencies near 15 and 20 Mc/s. The mean fading correlation bandwidth was found

to be 4.3 kc/s. The value exceeded 90% of the time was 1.0 kc/s; the value exceeded 10% of the time was 24 9
not obtainable. Generally, the bandwidth was smaller

during periods of high magnetic activity or high fade

rate. It also exhibited a minimum near midday. Tech. Note 166 (PB181454). An atlas of whistlers and VLF emissions, A survey of VLF spectra from Boulder, Colorado, D. L. Jones, R. M. Gallet, J. M.

Watts, and D. N. Frazer

Naturally occurring VLF noises are classified and

spectrograms illustrating each class are presented. The report is divided into six sections. The first section consists of the systematic classification of VLF noises. Samples of whistlers and VLF emissions

are shown in the second and third sections, respectively. The next section gives examples of interactions between

these two classes. Section five consists of some ex- ceptionally active periods during magnetic disturbances. The last section is a synoptic survey for the four months, March through June, 1957. A spectrogram is given for every observation period containing any VLF activity. Most of the data was recorded at the Sunset Field

Station of the National Bureau of Standards, Boulder, Colorado, during 1956-1957, January 1963- 99 p. Tech. Note 167. The error rates in multiple FSK systems

and the signal-to-noise characteristics of FM and PCM-FS systems, H. Akima

The element and symbol error rates in multiple FSK

(frequency-shift-keying) systems and the output SNR

(signal-to-noise ratio) in FM (frequency-modulation) and PCM-FS (pulse-code-modulation-frequency-shift) systems

are evaluated for wide ranges of system parameters, assuming that the incoming signal and noise in the de- modulator are a fading-free signal and an additive white Gaussian noise, respectively. It is shown that the re- quired intrinsic SNR for an assigned value of symbol

error rate in multiple FSK systems can be reduced by in- creasing the number of frequencies in the keying. The

possibility of improving the threshold of FM systems beyond that of conventional ones by modulating the

carrier with sampled values and demodulating the modulated wave with a band-dividing demodulator is shown. The value of the intrinsic SNR at the threshold increases

with the value of modulation index in band-dividing FM

systems, and with the number of quantizing levels in PCM-F S systems when the base in the coding or the number of digits for each sample is kept constant. The maximum output SNR in PCM-FS systems depends only on the number of quantizing levels and not on the base, whereas the threshold decreases as the base increases. From the comparison of the threshold in band-dividing FM systems with that in PCM-FS systems it is shown

that the latter cannot be lower than the former but can

only approach the former when the base approaches the number of quantizing levels. Brief discussions on the threshold effects in frequency-lock and phase-lock FM

demodulators suggest that the threshold of these feedback FM demodulators cannot be improved beyond that of a band-dividing one. March 25, 1963. 55 p. Tech. Note 168. Transistorized building blocks for data

instrumentation, R. L. HilJ The Natidnal Bureau of Standards has developed a number of modular transistorized digital circuits that

have been used in automatizing many data recording and

preliminary processing tasks encountered in its scientific operations. These versatile building blocks can be con- nected together systematically to form digital circuits

that accept raw data from experimental equipment and

transpose these data into a form suitable for input to a high-speed electronic computer. Each assembly of packages can be tailored to fit the special requirements of the project and can be used at

the site of the experiment. The output from the system

can be: 1) fed directly to a computer, 2) recorded on a medium (paper tape, magnetic tape, etc.) suitable for computer input at a later date, or 3) used to drive display equipment that keeps the scientist informed of the prog- ress of his experiment. As a result of experience in the application of these

units, some of the original packages have been modified and additional types developed. In addition to describing

the modified and new package types, this report also in- cludes a description of a new series of packages consisting of identical circuitry, but utilizing a different type of mating connector and a smaller circuit-board. April 1, 1963. 107 p. Tech Note 169. Profiles of electron density over

the magnetic equator obtained using the incoherent

scatter technique, K. L. Bowles, et. al. This report presents a number of electron density

profiles obtained using incoherent scatter near Lima,

Peru. March 16, 1963. 29 p.

Tech. Note 170. Phototypesetting of computer output, W. R. Bozman A photocomposition machine controlled by the magnetic

tape output from a computer was used to prepare a 559- page table of atomic transition probabilities at the National Bureau of Standards. This method makes possible

the publication of computed data in high quality typog- raphy in a reasonable time and at a reasonable cost. Many styles of type are readily available to the program- mer including Greek, italic, mathematical symbols, upper and lower case alphabets, etc. June 25, 1963. 6 p. Tech. Note 171. Bibliography on atmospheric aspects of radio astronomy, including selected refer- ences to related fields, W. Nupen.

This compilation contains 1013 abstracts and is in- dexed under the following major subject headings, with many subsidiary headings thereunder:

I General

II Theories

III Structure of Atmosphere

IV Physico - Chemical

Factors V Radiation

VI Particles

VII Wave Characteristics

VIII Radio Communication

Parameters IX Methods of Observation X Instruments There is also a geographic index, a chronological index and an author index. May 1, 1963. 447 p. 250
Tech. Note 172. Practical methods for calibration of potentiometers, D. Ramaley

Potentiometer circuitry, particularly as related to cali- bration, is discussed with the primary consideration given

to the required circuit measurements. The more feasible means for calibrating potentiometers are described in considerable detail. Emphasis is placed upon the use of

the Universal Ratio Set as the basic implement for accomplishing the major protion of potentiometer cali- brations. March 25, 1963- 44 p. Tech. Note 173. Tables to facilitate the determination

of the ferrimagnetic resonance linewidth of nonmetallic magnetic materials, C. C. Preston and W. E. Case A common test procedure for measuring ferrimagnetic resonance linewidth, AH, and gyromagnetic ratio, y, of microwave ferrites is based upon a perturbation analysis

of the complex frequency shift obtained when a small sample is placed in a resonant cavity and an applied dc magnetic field. However, this method necessitates the

plotting of a ferrimagnetic resonance loss curve. To

find AH it is possible to derive an equation using lumped

circuit theory which reduces the number of needed

measurements to four attenuator readings. This paper provides a table which gives values of attenuation according to the following formula which

facilitates the determination of linewidth: A0 -Ar 20 A = 20 log 2 - 20 log (10 +l)forA0 -Ar =

0.41(0.01) 32.40.

April 15, 1963. 32 p. Tech. Note 174. Research on crystal growth and defect

characterization at the National Bureau of Standards

during the period July to December 1962, edited by H.

Steifen Peiser The National Bureau of Standards has embarked on a special program, partly supported by the Advanced Research Projects Agency, to unify and accelerate its research on the growth and characterization of crystals. This work will provide theory on the mechanism of

crystal growth, experimental techniques for growth and

study of crystals, interpretive analysis of observations

on crystals examined by diverse methods, and data from

the measurement of defect-sensitive properties of crystals. Just as the results of this work are to benefit research and, ultimately, technology in chemistry,

solid-state physics, metallurgy, mineralogy, electronics, and engineering, so the NBS program is most widely based on collaborative efforts of twelve technical divi- sions of the Washington and Boulder Laboratories. This note describes principally the individual NBS

research activities during July to December 1962 coupled

with statements on the most immediate plans at the end

of that period. An introductory section is followed by two other brief general sections describing the program

area and the NBS background interest in the field of crystal growth and characterization. A list of NBS

publications appertaining to the period under review and

a partial list of participants are appended. March 15, 1963. 32 p. Tech. Note 175. Curves of ground proximity loss for dipole antennas, L. E. Vogler and J. L. Noble

Ground proximity loss, defined as the decibel ratio of antenna input resistance to its free space resistance,

is presented in graphical form for four types of antennas:

vertical and horizontal electric and magnetic elementary

dipoles. Assuming a non-layered ground characterized

throughout by a relative dielectric Constance er and conductivity a, curves are given showing the ground proximity

loss for a wide range of values of ground constants, antenna height above the ground surface, and frequency. May 20, 1963. 37 p. Tech. Note 176. Unassigned.

Tech. Note 177. Table of attenuation error as a function

of vane-angle error for rotary vane attenuators, W. Larson The table of attenuation error as a function of vaneangle error gives the error in decibels caused by vane

misalinement which is common in the rotary vane attenuator. The attenuation errors corresponding to vane-angle

errors ranging from zero to 0. 499° (in increments of 0.001°) are presented for selected angles over the range of at- tenuation values from 0.01 to 70 db. The table is divided

into the following intervals of attenuation value incre- ments: 0.01 - 0.1 db in 0.01-db increments, 0.1 - 1.0 db in

0. 1-db increments, 1 - 20 db in 1-db increments, and 20 - 70 db in 5-db increments.

With the aid of this table, the calibration data of a

rotary vane attenuator can be analyzed for numerous

characteristics, including the following: misalinement between rotor and stator sections, realinement techniques,

resettability, and backlash. May 20, 1963- 160 p. Tech. Note 178. An interpolation procedure for calculat- ing atmospheric band absorptions from laboratory data, L. Droppleman, L. R. Megill, and R. F. Calfee A technique used for the calculation of absorption of

the 4.3/i band of COa has been extended to the 2.0/i, 2.7/z, and 15/i bands of C02

. Results obtained agree favorably

with the experimental data available. June 3, 1963. 20 p. Tech. Note 179. Choking two-phase flow literature sum- mary and idealized design solutions for hydrogen, ni- trogen, oxygen, and refrigerants twelve and eleven,

R. V. Smith The literature summary presents a brief description and

discussion of papers on choking, two-phase flow. These

papers are arranged with respect to analysis methods and

experimental systems. The idealized solutions utilize models intended to provide upper and lower limits for the actual flow cases. Charts are presented to provide for rapid determination of choking flow for the choking point

condition and for Fanno and isentropic flow for the fluids Ha , N2 , 02 , CC'jFj, and CC'jF. A discussion of chok-ng

flow and relaxation phenomena is included. (August 3, 1963). 127 p. 251
Tech. Note 180. Antenna beam elevation angle for control of tropospheric interference between space system

earth terminals and terrestrial stations, S. G. Lutz and

W. J. Hartman

High gain antennas, sensitive receivers and high power

transmitters which are used at the earth stations of space communications systems complicate the problem of shar- ing frequencies with other surface services. However,

because of the dependence of beyond-the-horizon tropo- spheric propagation on the scattering angle, it is possible to offset the gain of the terminal antenna by elevating

the beam.

Early studies of frequency-sharing assumed that the beam of the earth station was elevated "sufficiently" to increase the transmission loss to that which would be obtained if the actual antenna were replaced by an isotropic antenna. This paper studies die question of what

constitutes a "sufficient" elevation angle, as described

above, for the particular conditions of a smooth earth, 30-foot antenna heights and several combinations of antenna sizes. Some results are also given when there is an elevated horizon at the earth terminal end of the path. August 25, 1963- 12 p.

Tech. Note 181. Computer program for ionospheric mapping by numerical methods, M. E. Hinds and W. B. Jones A solution has recently been given to the problem of representing the complex variations of ionospheric char- acteristics on a world-wide scale, including their diurnal

variation, by numerical analysis of ionospheric data as measured at a network of stations [Jones and Gallet, 1962a]. The present paper describes the IBM 7090 (FAP)

program of the methods of numerical mapping referred to above. Included are detailed flow charts of the program

logic, and all necessary information for applying the pro- gram. Thus it fills the gap between the publications giving the scientific bases for the methods of mapping

and the practical problem of producing ionospheric maps.

This program, applied to ionospheric characteristics foF2 and F2-M3000, forms the basis for die new series, Central Radio Propagation Laboratory Ionospheric Predictions

.

August 20, 1963. 82 p. Tech. Note 182. A note on antipodal focussing, J. R. Wait There has been some interest shown recently in the practical significance of the antipodal focussing in VLF

propagation. If the earth and the ionosphere were perfectly concentric spherical surfaces, theory indicates that the amplitude of the field should build up to a maximum at the geographic antipodal point of the transmitter.

In the language of optics this point may be called an

axial caustic. August 20, 1963. 9 p. Tech. Note 183. A comparison of two melting-pressure equations constrained to the triple point using data for eleven gases and three metals, R. D. Goodwin and

L. A. Weber

Parameters have been determined by a least-squares method for the reduced Simon equation and for a new,

empirical melting equation using data for H2 , D2 , T2 , Ne,

Ar, Kr, Xe, N2 , 02 , C02 , H2 0, Na, K, and Hg. The new

equation, (P-Pt) /(T-Tt) = Aexp(-a/T) + BT, represents experimental data with essentially the same accuracy as

the Simon equation. It provides a sensitive difference method for graphical examination of data. October 6

1963. 23 p. Tech. Note 184. Lunar occultations of two discrete radio sources in 1963-1964, J. A. Eddy

The bright, extended radio sources Taurus A. and IC443

lie close to the ecliptic and are occulted by the moon

about every 8Y2 years, providing rare opportunities to study their angular brightness distribution with very high

resolution. The nature of the next series of occultations

of these sources, which will occur for observers at Boulder

during the period from November 1963 through August

1964, is discussed. October 11, 1963. 16 p. Tech. Note 185. Lectures on ion-atom collisions, M. P.. C. McDowell

This publication contains lectures delivered at the Joint Institute for Laboratory Astrophysics, University of Colorado, during September, 1962. The material of the

first four is largely taken from recent books by D. R. Bates, and was presented for pedagogic purposes only.

It does not purport, in any sense, to be a record of origi- nal work by the author. Any new material is confined to the last two lectures. March 15, 1963- 66 p. Tech. Note 186. Tabulation of published data on soviet

electron devices, C. P. Marsden

This tabulation includes published data on Soviet electron devices as collected from various publications, mostly handbooks published by the various ministries and

institutes of the USSR. Information is given on all active devices ranging from receiving to microwave devices, semiconductor devices, and various miscellaneous

devices 'such as, for example, photographic flash tubes and thermistors. June 3, 1963- 69 p. (Superseded by TN265).

Tech. Note 187. Transmission and reflection of electrons by aluminum foils, M. J. Berger

Electron transmission and reflection coefficients for aluminum foils, pertaining both to number and energy,

are given for source energies between 0.125 and 2.0 Mev, source obliquities ranging from perpendicular to grazing incidence, and foil thicknesses up to one half

of the electron mean range. The results were obtained

by a Monte Carlo calculation. April 1, 1963. 11 p. Tech. Note 188. Calibration of volt-ampere converters,

E. S. Williams These notes have been prepared to describe the National Bureau of Standards calibration services for volt-ampere converters (or transfer volt-ammeters), to suggest procedures for d-c standardization in the user's

laboratory, and to describe a voltage comparator which

can be used to make such calibrations quickly and

easily. April 25, 1963. 24 p. 252
Tech. Note 189- Unassigned.

Tech. Note 190. Impedance of commercial Leclanche

dry cells and batteries, R. J. Brodd and H. J. DeWane

An extensive study of die impedance characteristics

of the most commonly used sizes of commercial Leclanche

type dry cells and batteries has been made through the frequency range of 50 to 50,000 cycles. Changes in im- pedance due to aging and use were determined. Opencircuit voltages and flash currents were measured, and

capacities determined on standard tests in an effort to find a possible correlation between any of those three parameters and residual capacity. Data obtained are dis- played in tabular form and on Argand diagrams. July 5, 1963. 69 p. Tech. Note 191. Tables describing small-sample properties of the mean, median, standard deviation, and

other statistics in sampling from various distributions, C. Eisenhart, L. S. Deming, and C. S. Martin This note includes a collection of tables useful for study of the sampling distributions of some frequently- used statistics, with brief discussions of their construction and use. (1) The probability level P(f, n) of any

continuous parent distribution corresponding to level ( of the distribution of the median. (2) Probability points

of certain sample statistics for samples from six distri- butions: normal and double-exponential (mean, median),

rectangular (mean, median, midrange), Cauchy Sech, Sech 2 (median). In all the above tables, the sample size n= 3(2)15(10)95 and the probability levels are e= .001,

.005, .01, .025, .05, .10, .20, .25. Together with the tables listed under (2) are given the values of certain

ratios useful for comparing the various statistics.

(3) Probability that the standard deviation of a normal

distribution will be underestimated by the sample standard deviation s and by unbiased estimators of a based

on s, on the mean deviation, and on the sample range. Divisors are given for obtaining the corresponding "median unbiased" estimators. June 14, 1963. 14 p. Tech. Note 192. Calculations of the potential and effective diffusion constant in a polyelectrolyte solution,

S. R. Coriell and J. L. Jackson The results of numerical computations of the electrostatic potential and the effective diffusion constant of counterions in a polyelectrolyte solution are given. The

potentials for various polyion charge densities and

polyion sizes are presented graphically. The calculated

diffusion constants are compared with experimental data on the diffusion of labeled sodium ions in polyacrylic acid-sodium hydroxide solutions. June 28, 1963- 30 p. Tech. Note 193. Bibliography of foreign developments in machine translation and information processing, J. L. Walkowicz The bibliography presents 714 references to the litera- ture translated in the Joint Publications Research Service series on foreign developments in machine translation and information processing. In addition to a conventional

subject index to the literature cited, a permuted title index is provided as an experiment in the comparative

efficiency of two methods of indexing. Also provided are an author index, an index to conferences and organizations cited, and a listing of the original source documents.

July 10, 1963. 191 p. TN194. National standard reference data program. Background information. This publication discusses the proposed plans for a National Standard Reference Data System that will pro- vide critically evaluated data in the physical sciences on a national basis. It will be conducted as a decentralized operation across the country, with central co- ordination and administration by the National Bureau of Standards. Data will be centrally stored at NBS and dis- seminated through a series of services tailored to user needs in science and industry. June 1963. 18 p. Tech. Note 195. Report on technical investigation of odometers, D. R. Mackay A technical investigation of the accuracy of vehicle odometers was conducted by the Office of Weights and Measures. This report describes (1) the determination of the accuracy of odometers, (2) the identification of the factors that affect accuracy, and (3) the development of testing equipment and procedures to be used in the test- ing of odometers. Included in the investigation were fifth- wheel tests, road tests, wheel tests, and simulated-road

tests. Each type of test is described, and the results discussed. August 6, 1963. 27 p. Tech. Note 196. Report of the Investigation of slow-flow meters for fuel oil distribution systems, D. R. Mackay A recent development in the retail distribution of fuel

oil to individual residences and to mobile homes involves

the use of small, slow-flow meters. A technical investi- gation was conducted by the Office of Weights and Measures to develop testing equipment and test procedures

that could be used to evaluate the accuracy characteristics of these meters. This report describes the testing systems and test procedures that were developed, as well as the data that were obtained during the course of the investigation. September 5, 1963. 16 p. Tech. Note 197. Research on crystal growdi and char- acterization at the National Bureau of Standards during

the period JANUARY TO JUNE 1963, Edited by H. S. Peiser The National Bureau of Standards with partial support from the Advanced Research Projects Agency is continu- ing diverse research projects on the growth and characterization of crystals. This note summarizes the individ- ual NBS activities in this and closely related fields dur- ing January to July 1963. Lists of NBS publications appertaining to that period and of participating NBS sci- entists are appended. September 23, 1963- 43 p. Tech. Note 198. Photometry of projectors at the National Bureau of Standards, L. Chernoff A projector consists of a light source and optical sys- tem which produces a beam of light. In the photometry of 253
projectors, the intensity of the projector as a function of angle of viewing is measured. For many years the National Bureau of Standards has conducted photometric

tests on various types of projectors, and a variety of techniques and equipment has correspondingly been de- veloped. Photometric testing is carried out on a photometric range of which there are two at NBS: a short range on which the test distance may be varied up to a maximum of 30 meters and a longer range with a fixed test distance of 279 meters. Photometric measurements are made by comparison with a standard lamp of known luminous intensity

in a specified direction. These comparisons are made

with photosensors which are color-corrected by filters so

that the spectral response is similar to the CIE luminous

efficiency function. While precision requirements are not

severe, considerable care is required to keep the experi- mental errors within the desired limits. December 17, 1963. 28 p. TN199. Correction factor tables for four-point probe re- sistivity measurements on thin, circular semiconductor samples, L. J. Swartzendruber Extensive tables of the geometrical correction factors

for four-point probe resistivity measurements on thin, cir- cular semiconductor samples with all surfaces insulating

are given, (1) for an in-line probe array displaced radially with points along a diameter, (2) for an in-line probe

array displaced radially with the line of points perpendicular to a diameter, and (3) for a displaced square probe

array. 34 p. April 15, 1964. Tech. Note 200. Carbon resistors for cryogenic liquid

level measurement, R. Muhlenhaupt and P. Smelser Data are shown in graphical form. One set of plots presents resistance ratio R g /Rl as a function of "warming up" time at various levels of constant power dissipation. A second set of plots presents resistance ratio r l/ro as a function of nominal resistance at various

levels of constant power dissipation. The use of the data and the design of a practical liquid level indicator are discussed in the appendix. October 9, 1963. 25 p. Tech. Note 201. A technique for extrapolating the 1 kc

values of secondary capacitance standards to higher

frequencies, R. N. Jones A simple technique is described for extrapolating the

1 kc values of certain two-terminal capacitors to higher frequencies without incurring serious losses in accuracy. The method is intended for use with air capacitors having

binding post or banana plug type connectors. Because of inherent errors, such connectors are not appropriate for measurement where the highest accuracy is required. For

this reason, it is recommended that calibration of this type be performed by secondary laboratories and not be submitted to the National Bureau of Standards. November 5, 1963. 12 p. Tech. Note 202. Thermodynamic property values for gaseous and liquid carbon monoxide from 70 to 300°K

with pressures to 300 atmospheres, J. G. Hust and

R. B. Stewart The internal energy, entropy, enthalpy, and density of carbon monoxide are tabulated as functions of pressure

and temperature from 70 to 300°K and 0.1 to 300 atmospheres. A compressibility factor-pressure chart and a temperature-entropy chart are also included. The P-a-T

values have been calculated using the Su principle of corresponding states with nitrogen as a model. Extensive comparisons are included, illustrating the deviations of the calculated values from the experimental data and from

other correlated data. Equations representing the P-ct-T surface and the vapor pressure are given. November 30, 1963. 109 p. Tech. Note 203. BOUMAC - A Macro-programming sys- tem for scientific computation, J. H. Devenney and

J. Sopka The BOUMAC computing system will allow a scientist having no programming knowledge to perform the more commonly used macro computations such as matrix operations, solution of linear equations, numerical integrations, curve fitting, statistical analyses, etc., using a high- speed electronic computer. The scientist needs only to know the various mathematical operations which are re- quired to obtain the information he wants from the data and to learn to use a simple code with which to specify these madiematical operations. December 18, 1963. 37 p. Tech. Note 204. Calculations of the field near the apex

of a wedge surface, J. R. Wait and C. M. Jackson Using the exact series solution for diffraction by a perfectly conducting wedge, numerical results are pre- sented for the structure of the field in the apex region. This provides insight to the nature of electromagnetic

fields near a surface discontinuity. Furthermore, the results provide some justification for the use of approxi- mate boundary conditions which have been used previously

in studying radio propagation over terrain features. No- vember 21, 1963. 72 p. Tech. Note 205. Numerical calculations for reflection of electromagnetic waves from a lossy magnetoplasma,

L. C. Walters and J. R. Wait Extensive numerical results are presented for the re- flection coefficient of a horizontally stratified ionized medium. The profiles of electron density and the collision frequencies are both taken to be exponential functions. The d-c magnetic field is taken to be horizontal and transverse to the direction of propagation. The specific results described are applicable to the oblique re- flection of VLF radio waves in the D layer of the iono- sphere for propagation along the magnetic equator. It is confirmed that the reflection coefficient is non-reciprocal

in both amplitude and phase. For a wide range of the parameters, the magnitude of the reflection coefficient is greater for west-to-east propagation than for east-to-west propagation

.

The extensive graphical data in the present paper are

to be regarded as supplementary to the paper "Reflection

of Electromagnetic Waves from a Lossy Magnetoplasma"

which contained only a small sample of such calculations. November 21, 1963- 21 p. Tech. Note 206 (Series) Observations of the normal phase variations of very low frequency radio signals received over different paths 254
are given. The monthly mean diurnal phase changes are shown and compared with the seasonal variations in path

illumination. The values of the observed short term phase

differences are also given. Tech. Note 206-1. The normal phase variations of the 18 kc/s signals from NBA observed at Frankfurt, Ger- many, A. H. Brady, A. C. Murphy, and D. D. Crombie. December 8, 1963. 28 p. Tech. Note 206-2. The normal phase variations of the 18 kc/s signals from NBA observed at Maui, Hawaii,

A. H. Brady, A. C. Murphy, and D. D. Crombie. March 19, 1964. 23 p. TN206-3. The normal phase variations of the 18 kc/s

signals from NBS observed at Boulder, Colorado, U. S. A., A. H. Brady, A. C. Murphy, and D. D. Crombie. April 10 1964 27 p. TN206-4. The normal phase variations of the 18 kc/s

signals from NBS observed at College, Alaska, J. H. Crary and A. C. Murphy. September 30, 1965. 23 p. TN206-5. The normal phase variations of the 16 kc/s

signals from GBR observed at College, Alaska, J. H. Crary and A. C. Murphy. September 30, 1965. 34 p. TN207. Quantum field theoretic techniques and the electromagnetic properties of a uniformly magnetized electron gas, L. A. Steinert The principal objective of this research was the formulation of a many body theory of electronic charge trans- port for uniformly magnetized systems which could be

utilized with some degree of practicality to predict quan- tum effects of the electron-electron interactions. This objective has been achieved to the point where quantum exchange contributions may be calculated in ad- dition to the "self-consistent field" approximation al- ready considered. As a by-product of this research, ex- pressions were obtained for the spin magnetization with quantum exchange interaction included. The results which have been obtained are applicable to the solid

state as a model semiconductor and to the gaseous state as a model fully ionized gas (non-relativistic) with sta- tionary positive charges. April 6, 1964. 231 p. Tech. Note 208. Calculated diffraction effects at VLF

from a localized ionospheric depression, J. R. Wait Propagation of VLF radio waves in the earth -ionosphere waveguide of non-uniform width is considered. The dis- turbed region is permitted to be of finite extent. It is assumed that the height variations may be locally repre- sented in terms of a propagation function S(x,y) which is a function of both x and y. Using first-order scattering

theory, calculations are presented for a disturbed region which is approximately rectangular in the horizontal

plane. January 16, 1964. 12 p. TN209. Calculation of sunrise and sunset times at ionospheric heights along a great circle path,

A. H. Brady and D. D. Crombie

Formulae for determining the coordinates of points along a specified great circle path and for determining

the times of sunset and sunrise at these points are given. A computer program for making the calculations and showing which portions of a great circle path are illumi- nated is outlined. Some illustrations of the dependence

of VLF phase delay on path illumination are also given. November 8, 1964. 15 p. Tech. Note 210. An atlas of solar flare effects observed

on long VLF paths during 1961, C. J. Chilton, F. K.

Steele, and D. D. Crombie

Effects produced by 37 solar flares on four long VLF

paths during 1961 are shown and tabulated. March 13, 1964. 35 p. TN211. Conference on non-linear processes in the ion- osphere, December 16-17, 1963, Editors D. H. Menzel and E. K. Smith, Jr. This Technical Note is a six volume compilation of the papers presented at the Conference on Non-linear Processes in the Ionosphere, December 16-17, 1963, at Boulder Laboratories, National Bureau of Standards. The

conference was jointly sponsored by the Voice of America

and the Central Radio Propagation Laboratory. This

compilation contains twenty papers by outstanding au- thors in the field. General topic areas convered by the papers are collisional radiowave interactions, collision- less radio-wave interactions, and excitation processes. Volume 1, April 17, 1964, 83 p. Volume 2, April 17, 1964, 69 p. Volume 3, April 19, 1964, 118 p. Volume 4,' April 22, 1964, 125 p. Volume 5, April 24, 1964, 122 p.' Volume 6, April 24, 1964, 116. TN212. Unassigned. TN214. Absolute photometry of the light of the night

sky. The zenith intensity at Haleakala (lati- tude N 20.7°) and at Fritz Peak (latitude N

39-9°), F. E. Roach and L. L. Smith A study is presented ofone year of systematic zenith observations made with similar photometers at two ob- serving stations: Haleakala (latitude N 20.7°) and Fritz Peak (latitude N 39.9°). It is shown that, for an effective wavelength of 5300 A, there is a change of intensity with

sidereal time (and therefore right ascension) due to three components: (1) integrated starlight, (2) zodiacal light, and (3) airglow continuum. Quantitative separation of the components is made. A critical comparison is made

with some earlier investigations with particular reference

to the problem of the galactic light. June 29, 1964. 52 p. TN215. Percentage points of the beta distribution, L.

E. Vogler Tables are presented of percentage points x(p \v /2, v

} /2) of the Beta distribution. The percentage points are given to six figures correct to within a unit in the last place for probability levels p: p = 0.0001, 0.001, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25,

0.5, and for degrees of freedom v

2 and v ^. v

2 = 1(0.0)2, 2.2, 2.5(0.5)5, 6(1.0)10, 12, 15, 20, 24, 30, 40, 60, 120, ZSS
i/, = 1(1.0)10, 12, 15, 20, 24, 30, 40, 60, 120. A table of the Complete Beta function for the above

values of ^ and v

2 is also included. May 30, 1964. 32 p. TN216. Computation of Hankel functions, L. A. Berry Methods of computing solutions to Bessel's equation,

z

2 £l + z p. + ( Z2 _ v

2

} = 0) for complex v and and dz2 dz

for small, real v, are given in detail. The methods are most suitable for use on an electronic digital computer.

With a computer which carries eight decimal digits, the methods presented for small, real v will return at least

i-ix correct significant digits for all z. When v and z are both complex, the accuracy depends on |z| (since asymptotic forms are used) and the ratio v/z. Relative error curves are shown as a function of |v/z| parametric in

|zj. For v sufficiently far from z, seven correct digits

are obtained, which for v = z, the relative error is of the order 10~ 2 /|z|. June 12, 1964. 19 p. TN217. A bibliography of thermophy sical properties of argon from 0 to 300°K 1

, L. A. Hall, J. G. Hust, and A. L. Gosman A bibliography of 450 references is presented for mechanical, thermodynamic, and transport properties of argon from 0 to 300°K. Each article has been reviewed

and coded with regard to properties studied, type of arti- cle (i.e.. experimental, theororetical, etc.), and method

of presentation of the data. The temperature and pres- sure ranges for each property under consideration are also given. An index was prepared according to property

with 4 sub-categories: solid, liquid, gas up to 200°K, and gas above 200°K. June 12, 1964. 102 p. TN218. The electrical properties of aluminum for cryo- genic electromagnets, R. J. Corruccini The published data for the ideal resistivity and the magnetoresistivity of aluminum have been correlated. It is shown that both properties can be calculated for the limited ranges of temperature and purity that are of im- portant for aluminum cryogenic electromagnets from the residual resistivity ratio alone. Empirical functions are given for these properties, and sample calculations are given of the figure of merit for a particular aluminum

solenoid relative to the same solenoid using water- cooled copper. August 30, 1964. 34 p. TN219. Radio path length stability of ground-to-ground microwave links, M. C. Thompson, Jr., and

H. B. Janes The Lower Atmosphere Physics Section of the National Bureau of Standards, Troposphere and Space Telecommunications Division, conducted a series of eight field experiments in 1958 and 1959 to study the variation in the apparent path length of ground-to-ground microwave

links (i.e., the variations in phase of 9400 Mc/s signals) and the corresponding variations in radio refractive index and other atmospheric parameters measured at the path

terminals. This report summarizes the results obtained

on paths in Colorado arid Florida. It also includes an analysis of long-term variations in the apparent path

length and associated variables recorded during each ex- periment, and a power spectrum analysis of short-term variations in apparent path length and refractivity. No- vember 15, 1964. 68 p. TN220. Some modifications in methods of calibration of universal ratio sets, D. Ramaley

Universal Ratio Sets can be calibrated by a number of

different methods. The well established methods are very briefly outlined and emphasis is placed on some

more recent developments. The choice of methods will depend upon available laboratory equipment and other considerations. August 30, 1964. 20 p. TN221. Demagnetizing factors for oblate spheroids used in ferrimagnetic resonance measurements, L. B. Schmidt, W. E. Case, and R. D. Harrington Demagnetizing factors for oblate spheroids magnetized

along the short axis are given for aspect ratios from 25.0

to 35.0 in increments of 0.1, from 35.0 to 55.0 in incre- ments of 0.2, from 55.0 to 80.0 in increments of 0.5, from

80.0 to 129.0 in increments of 1.0. The values of all de- magnetizing factots given in the tables have been rounded

off to 6 decimal places and are accurate to +5 units in the seventh place. The tables are presented in a form convenient for use in ferrimagnetic resonance measure- ments on disk shaped samples. A brief discussion of the

effect of accuracy of demagnetizing factors on measure- ments of this type is included. September 4, 1964. 12 p. TN222. A minimum telemetry receiving system for the Alouette topside sounder satellite, E. E. Ferguson and R. G. Green A description is given of a minimum telemetry receiv- ing system used to receive topside ionospheric records

from the Alouette (S-27) satellite. Instructions are in- cluded for the determination of telemetry antenna aiming angles to the satellite from any location on the surface

of the Earth. October 9, 1964. 22 p. TN223. Concerning the theory of radiation from a slotted conducting plane in a plasma environment,

J. R. Wait A preliminary analysis is given for the radiation into a plasma half-space from an infinitely long slot in a per- fectly conducting ground plane. The plasma is anisotropic by virtue of a d-c magnetic field which is parallel

to the slot. For a homogeneous plasma, it is found that

for such a configuration the radiation pattern will be symmetrical but the excited surface wave is highly asymmetrical. The extension of the theory to an inhomogene- ous magneto plasma is outlined briefly. September 28, 1964. 14 p. TN224. Computation of a modified Fresnel integral arising in the theory of diffraction by a vari- able screen, L. C. Walters and J. R. Wait The integral of the form 256
j

f(Z) exp (-In Z

2 /2) dZ

is considered in this note. The function f(Z) varies from

0 to 1 in a monotonic fashion over the range of Z. Some

numerical results are given which should be useful in certain diffraction and scattering problems involving ob- jects of variable density. October 14, 1964. 20 p. TN225. Optical scintillation; A Survey of the Literature,

J. R. Meyer-Arendt and C. B. Emmanuel

In this Technical Note, main emphasis is placed on

providing the reader with an exhaustive survey of the

literature, covering the field of effects of atmospheric

refraction on the propagation of electromagnetic radia- ation at optical frequencies. One may distinguish systematic, regular, or normal re- fraction on the one side from random refraction on the

other. The former can be predicted theoretically, using

various types of atmospheric models; the latter requires analysis by statistical methods. Numerous observational, experimental, and theoretical aspects of random refraction, that is, of scintillation in

its widest sense, are discussed. The following topics

are dealt with: refraction in plane and in spherically

stratified media, refractive index variations, radio re- fraction, scintillation as a function of aperture size, zenith distance, site location, dispersion, and meteorological conditions, the frequency spectrum of scintillation,

terrestrial scintillation, image distortion and contrast re- duction, refraction and diffraction theories of scintillation, autocorrelation analyses, radio star scintillation, and coherence problems. Questions of atmospheric scattering, absorption, and depolarization are excluded.

Finally, a brief review is given concerning newer experi- mental methods for the observation, recording, and anal- what further theoretical and experimental efforts should

be undertaken. April 5, 1965. 140 p. TN226. An atlas of very-low-frequency emission spectra observed with the "hiss recorder", J. A. Koch and V. C. Edens

This Technical Note contains VLF emission data

taken on hiss recorders at several stations for the last

four years. The purpose of this publication is to present

a representative selection of long-term activity. While

classifications of the different types are made, no quantitative discussion of the source of these groups of emissions is given. The term "VLF emission event" will be

restricted in this publication to groups of emissions which last for at least 15 seconds, since this is the shortest period which can be easily observed by the hiss

recorder. November 13, 1964. 27 p. TN227. The Joule-Thomson process in cryogenic re- frigeration systems, J. W. Dean and D. B. Mann A comprehensive analysis of the Joule-Thomson proc- ess as applied to cryogenic refrigeration systems is presented. The descriptions of the process already in the

literature are usually for specific applications. In contrast, performance characteristics are presented here for helium, para-hydrogen, and nitrogen operations over a large range of process parameters. February 14 1965 39 p. TN228. A tabulation of airy functions, H. T. Dougherty and M. E. Johnson A tabulation is provided for Wait's formulation of the Airy function and its first derivative. The argument

covers the range of real values from -6.0 to +6.0 in in- tervals of 0.1. As an aid for their application the tabula- tions are also graphed. September 18, 1964. TN229. Table of attenuation as a function of vane

angle for rotary vane attenuators (A = —40

log

lo cos d), W. Larson The table of attenuation as a function of vane angle gives the attenuation in decibels produced by an angular displacement of the vane of a rotary-vane attenuator as- suming ideal behavior of the attenuator. The attenuations for vane angles corresponding to the function A = —40 l°g

lQ cos Q are given in the table, where A is the attenuation in decibels and 0 is the vane angle in degrees. The attenuations in decibels are given for incre- ments of 0.001° for the values of 6 from zero to 89.999°

to the sixth decimal place and for the values of 6 from 89.000° to 89.999° to the fifth decimal place. The table was designed for determining the attenuation in decibels of a rotary-vane attenuation utilizing a scale marked in degrees. Also, the table can be used to determine correct decibel markings for a rotary vane at- tenuator with a direct reading scale regardless of gear

ratio. The table can be used as an aid in analyzing the calibration data of a rotary-vane attenuator for characteristics which include ingerent error, resettability, and

gearing eccentricity. January 7, 1965. 186 p. TN230. VHF ionospheric scatter system loss measure- ments European-Mediterranean area, V. H. Goerke and O. D. Remmler The results of VHF ionospheric scatter measurements made in the European-Mediterranean area are shown to be in good agreement with results obtained in continental United States. Sporadic-E propagation was observed much more frequently in the European-Mediterranean area

than in the United States. The unusual diurnal varia- tions and low signal levels observed by British workers

in 1955 on a Gibraltar-UK path are explained on the basis of antenna patterns which favored off-path and

high-level scattering by meteoric ionization. It is con- cluded that the paths and sites used during these tests would be suitable for practical ionospheric forward scatter systems. December 25, 1964. 58 p. TN231. Solar heating, radiative cooling, and thermal movement. Their effects on built-up roofing, W. C. Cullen Twenty different built-up roof construction specimens, covered with five surfacing materials, were subjected to 257
natural solar heating and nighttime cooling. The tem- peratures and temperature changes observed during winter and summer exposures are discussed. The data indicate

that the temperature attained in a roof membrane is in- fluenced by the absorptance and emissivity of the sur- face as well as the thermal and physical properties of the substrate to which the roofing is applied. The data show

that roofings placed over insulation may be heated to a temperature of 80°F. above ambient due to solar heating and may be sub-cooled as much as 20°F. below the ambient due to radiative cooling. The thermal movements

which occur in the components of a roof system due to temperature change are discussed in relation to built-up roof performance and failures. Thermal expansion data

are presented for some composite bituminous membranes. The data show that these membranes undergo greater thermal movements than most other components of a roof system and the rate of expansion is not linear but de- creases as the temperature is increased. December 16, 1963. 33 p. of bulk re- ds for elec- TN232. Bibliography on the me

sistivity of semicondu<

tron devices, J. C. Fre

In support of a study of accurate measurements of the bulk resistivity of semiconductor materials such as ger- manium and silicon which are used in electron devices,

a literature search has led to the development of a rather large collection of references. The file cards making up

the bibliography are reproduced in this Technical Note

for the assistance of others who are concerned with the improvement and standardization of these measurements.

October 21, 1964. 118 p. TN233. Sensitivity indices for Hall generators, S. Rubin

and G. J. Rogers The Hall generator u product-sensitive device,

ratio of the Hall voltage t magnetic indue the pi

lly characterized as a

>roduct sensitivity (the

iduct of control current

;factory as a figu

ierit for many applications, onal sensitivity indices, one

r this reason, two addi- measure of the effect of magnetic induction on output voltage and the other a measure of the effect of control current on output voltage,

are proposed, defined, and illustrated by an example. February 6, 1964. 22 p. TN234. Soviet res. R. Kle

irch in field emission, 1960-1963;

:ed bibliography, T. W. Marton and

Sovi : field emission research, including both the ex- perimental and theoretical aspects of field electron and

ion emission from metals and semiconductors, is the subject of this bibliography. Over 80 complete references

to original publications and 50 meeting papers were se- lected after an extensive search of the Soviet and East European technical literature published from January

I960 through November 1963. Most of these papers are

in Russian; a few are in Czech, English, Hungarian,

Polish, and Ukrainian. Full references are given to English translations of the entries whenever available. A list of relevant scientific meetings, papers read at

these meetings, bibliographic references, and

subject index are appended to the compilation, bibliography represents the continuation of the published in October I960 as U.S. NBS Technic;

75. February 24, 1964. 39 p. TN235. A portable

R. J. Carpeiibidium-vapor frequency ;

Three portable optically-pumped rubidium-vapor fre- quency standards have been constructed. Output fre- quencies of 5 MHz and 100 kHz with a stability of better than 1:10 10 have been realized. The weight without power supply is 18 kg and the power required, exclusive

of temperature control, is about 11 watts. The power

supply, which also contains batteries for up to 15 hours

operation, weighs 26 kg. Sufficient detail is presented

to allow the construction of similar units. April 6, 1964. 25 p. TN236. R. 5search on crystal growth and characterization at the National Bureau of Standards July

to December, 1963, Editor, H. S. Peiser The National Bureau of Standards with partial support

from the Advanced Research Projects Agency is continuing diverse research projects on the growth and characterization of crystals. This note summarizes the individ- ual NBS activities in this and closely related fields during July to December, 1963. Lists of NBS publications appertaining to that period and of participating NBS scientists are appended. April 6, 1964. 67 p. TN237. Dis

doublelied system

quency a pha:

This Note presents four devices embodying interesting and unusual solutions to problems prevalent in their re- spective arts. These devices, developed at the National Bureau of Standards and the U.S. Weather Bureau, comprise a pulse frequency meter; a variable phase shifter; a variable bandwidth, double-tuned transformer, and a control system for any hydraulic ram-operated press.

April 10, 1964. 9 p. TN238. Miscellaneous studies in probabil

tistics: Distribution theory, s problems, and occasional tables mple

This publication makes a\ tables prepared at various time

tistical Engineering Laboratory

Contents: (1) Distribution ates having n— 1 and n degi Cameron and Cyrus Derman. Cauchy distribution, by Cyru

ance of the sample mean for tion whose cumulative distri least from the standard normal

out of two, by E. P. "King. V

closest to the population mean

and pseudo-medians, by Mary

sizes m up to 10, gives the va

(m odd), pseudo-median (m e

tilable some notes and

; by the staff of the Staf the ratio of two F vari-

;s of freedom, by J. M.

(2) Some notes on the Derman. Includes vari- incated Cauchy distribu- bution function deviates

c.d.f. (3) The better one

iriance of the observation

. (4) Variance of medians

G. Natrella. For sample lances (5D) of the median

/en), and average of two 258
values on either side of the median (m odd), for the nor- mal and rectangular distributions and (m — 6) for the ex- treme-value distribution. (5) Probability points of order

statistics in random samples of size n from a uniform

distribution over (0, 1), by Churchill Eisenhart and Lola

S. Deming. Gives probability points (4S) of each order

statistic for probabilities a = .001, .005, .01, .025, .05,

.10, .20, .25, .50 and n = 2CD10. April 24, 1964. 15 p. TN239. Unassigned. TN240. Average power dissipated in a diode swept

along its reverse characteristic, H. A. Schafft The commonly used method of sweeping to a fixed power in order to compare the reverse characteristics of

a group of similar diodes is found lacking under conditions for which an average temperature is meaningful. It is shown how a determination may be made of the average power dissipation in a diode (or in any device with a

similarly shaped characteristic) when it is swept along

its reverse characteristic by a full-wave rectified sinusoidally varying voltage in series with a resistive load. The uncertainty in the determination due to the variability of the characteristic is for most cases less than ±5%

if the' ratio of the maximum voltage drop across the cur- rent limiting resistor to the maximum voltage across the device is larger than or equal to two. Errors introduced by small uncertainties in the pertinent parameters are also presented. Finally it is shown how the reverse

characteristics of similar diodes can be examined under

relatively equivalent heating conditions. April 30, 1964. 19 p. TN241. Calculations for comparing two-point and four- point probe resistivity measurements on rec- tangular bar-shaped semiconductor samples,

L. J. Swartzendruber

Fortran codes are given which enable the calculation

of four-point probe correction factors for use with bar- shaped samples. Samples with either plated orunplated ends are considered. The errors that arise due to probe misplacement, inaccurate sample size and shape, and

non-uniform end plating are also considered. Use of the results permits accurate comparison of two-point and

four-point probe resistivity measurements. The codes

are in Fortran II language and were written for an IBM

7090 computer. June 1, 1964. 25 p. TN242. A fortran program for analysis of ellipsometer measurements and calculation of reflection coefficients from thin films, F. L. McCrackin A Fortra i computer pro gram to calculate the reflection coefficient for both sin^;le and multiple thin films and

to analyze optical measucements of such films by an el- lipsometer is presented. Both the films and the substrate may be absorbing and have complex indexes of

refraction. The reflectior coefficients of inhomogeneous

films (films of varying refractive index) may be computed

by determining the reflection coefficients of an equivalent

The ellipsometer measurements for a given film may

be calculated or the index of refraction and thickness of

a film may be calculated from ellipsometer readings. The ellipsometer measurements may be corrected for the

retardation of the compensator or for multiple reflections of the light. May 27, 1964. 42 p. TN243. Survey of multiply charged ions, F. L. Mohler This is a survey of experimental results on multiply charged rare gas ions, molecule ions and radical ions

with emphasis on simpler compounds that may be of as- trophysical interest. Tables of rare gas ions, simple molecules and a few hydrocarbon molecules include data on relative abundance and appearance potentials of the

ions. May 27, 1964. 13 p.

TN244. A helicopter battery service simulator, W. G. Eicke, Jr. A semi-automatic helicopter battery service simulator

is described in detail. The simulator consists of a pro- gramming unit and operational unit for charging and dis- charging the battery, and peripheral equipment for fur- nishing charging current and recording data. The design

of the program unit is based on the use of stepping switches and is capable of selecting any minute of a week uniquely. The programer is designed to handle a

large number of programs but only 8 control units were

installed. The capacity of the complete simulator is 3 batteries. The design is such that the simulator can be made fully automatic by the addition of certain data re- cording equipment. August 28, 1964. 19 p.

TN245. Factors influencing the design of original- document scanners for input to computers,

E. S. Stein and Associates

This report considers some of the factors involved in the design and implementation of scanners capable of reading data from documents in their original form rather than from microfilm. The scanner is assumed to be part

of a transcribing information processor such as the FOSDIC (Film Optical Scanning for Direct Input to Computers) type of machine. Advantages and disadvantages

of microfilm as against original document scanning are discussed. Factors considered include the types of forms that are to be handled, paper handling problems,

available electronic and mechanical scanning techniques, problems of resolution and image defects, precision

limitations, and overall system limitations. A set of general specifications for scanners for direct data input

to computers is developed in qualitative terms. August

19, 1964. 50 p. TN247. A sruvey of magnetic thin film materials, G.

W. Reimherr

This survey lists the materials reportedly made as a magnetic thin film, along with some of their properties and potential applications. Research activity using the less-frequently mentioned magnetic film materials is 259
TN248. Radiochemical analysis: Activation analysis, instrumentation radiation techniques, and

radioisotope techniques, July 1963 to June

1964, Editor J. R. DeVoe

This first summary of progress of the newly organized Radiochemical Analysis Section of the Analytical Chemistry Division at NBS covers four areas: Activation Analysis, Instrumentation, Radiation Techniques, and

Radioisotope Techniques. The present facilities including a radiochemical labor- atory and a clean room facility are described and future plans for the 10 megawatt nuclear reactor and the 100 Mev Linac facilities at the new Bureau site are outlined. A teletypewriter-pulse-height analyzer interface for more

efficient data handling in gamma-ray spectroscopy is described. A combination of radioisotope dilution and ra- diometric methods for determining trace amounts of silver and cobalt is presented. Details of a drift-free Mossbauer

spectrometer which utilizes positive synchronization of a pulse-height analyzer with an electro-mechanical drive

are given. Reproducible response to better than 0.5% is obtained. An apparatus for the measurement of the energy

of nuclear species recoiling from clean metal surfaces in ultrahigh vacuum is described. The application of neutron activation analysis for determination of ppm levels

of copper and zinc in human lung tissue is discussed. August 21, 1964. 83 p. TN249. A program for plotting circles of constant over- pressure around targeted points, M. L. Joel and D. D. Lottridge The Defense Communications Agency is responsible

for locating its communications facilities in a manner

that will maximize the probabil ity of maintaining communication in the face of nuclear attack. This report de- scribes a program written for the IBM 7094 which pro- duces as its final output one or more tapes to be used as

input to a CalComp 570 plotter system. With these tapes

the plotter can produce overlays for use with the series

of World Aeronautical Charts covering the Continental United States. The overlays comprise circles represent- ing a radius of constant overpressure around the target point of a given nuclear weapon. Based on hypothetical attacks the overlays provide the user with a means of visualizing the hardness required of facilities to survive

in particular areas. October 28, 1964. 54 p. TN250. A nomogram for computing ^

+

}^ and a nomo- gram for computing

| a +

It- |, H. S. Bowman

This report gives two nomograms designed and constructed for use in computing complex ratios of two di- mensional vector quantities. One nomogram can be used

to compute the real and imaginary parts of a vector ratio, and the other to compute the absolute value of such a function. Whenever a large number of vector ratios are required in data reduction, the use of these nomograms

saves time in manual processing. October 2, 1964. 13 p. TN251. Research on crystal growth and characterization

at

( the National Bureau of Standards, January

to June 1964, Editor, H. F. McMurdie The National Bureau of Standards with partial support from the Advanced Research Projects Agency of the Department of Defense is continuing a wide program of studies involving crystalline materials. These include

investigation of methods and theory of growth, study of detection and effects of defects, determination of physical properties, refinement of chemical analysis, and de- termination of stability relations and atomic structure. The types of materials range from organic compounds,

through metals, and inorganic salts to refractory oxides. This Technical Note, the fourth in the series, summarizes the progress of these various projects from January

to June, 1964, and lists the related publications and

participating scientists. October 19, 1964. 72 p. TN252. Procedures for precise determination of thermal

radiation properties, November 1962 to October 1963, J. C. Richmond, D. P. Dewitt and

W. D. Hayes, Jr. The preliminary design of an intergrating-sphere re- flectometer, utilizing a helium-neon continuous-wave gas

laser as the source, for measuring the reflectance of specimens at high temperature, was completed. Develop- ment work on an ellipsoidal mirror reflectometer for measuring spectral reflectance in the wavelength range

of 2 to 15 microns of specimens at room temperature was

continued. The study of equations relating spectral emissivity of metals to other properties was continued. Platinum- 13% rhodium and oxidized Inconel working

standards of normal spectral emittance were calibrated over the wavelength range of 1 to 15 microns at temperatures of 800, 1100 and 1300°K. Several modifications of the normal spectral emittance equipment were made to permit operation in the 15-35 micron range. November

20, 1964. 55 p. TN253. Disclosures on a plumbing vent manifold, a micro-adjuster, a glass joint or s'topcock, and

a miniature puller. Editor, D. Robbins

This Note presents four devices embodying interesting and unusual solutions to problems prevalent in their re- spective arts. These devices, developed at the National Bureau of Standards and the U.S. Weather Bureau, comprise a vent manifold for a plumbing system; a microadjuster providing purely rectilinear motion; a miniature

gear, flange and bearing puller, and a glass joint or stop- cock preventing capillary action. November 30, 1964.

9 p. TN254. On the pictorial structure of Chinese characters, B. Kirk Rankin, III, W. A. Sillars, and

R. W. Hsu A grammar of radical combination in Chinese characters has been written. From a sample study, it appears

that this grammar is powerful enough to generate 80% of

the characters in one of the standard dictionaries. Research leading to the construction of this grammar is em- bedded in a larger framework for describing the pictorial structure of the characters in detail. The descriptive framework defines five areas of study within the overall study of the characters: radical combination, radical

variation, stroke combination, stroke variation, and dis- tictive features of strokes. January 4, 1965. 40 p. 260
TN255. Placebo IV. Rules, concordance, sample computer generation, W. C. Watt This paper presents materials which make the micro- grammar PLACEBO IV accessible to close inspection.

In the form given here, the microgrammar (when transfer- red to punched cards and when allied with the requisite

'service programs') may be used for random generation as well as, with minor modifications, for analytical parsing. These materials also facilitate the conversion of PLACEBO IV to the production and analysis of sen- tences other than those it now specifies. March 9, 1965. 65 p. TN256. Microwave reflection techniques for dense plasma diagnostics, S. Takeda and T. Tsukishima The microwave reflection method for measuring the electron density whose plasma frequency is higher than

the probing frequency is described in detail. Various ex- pressions and formulas which are useful for a variety of experimental conditions are given. A method to extend

further the measureable density range is proposed. The

fringing field effects are considered when a waveguide

is used as a probe. References are given to the experi- mental works which substantiate the theoretical anal- yese. Also included are the analyses of reflection by a non-uniform boundary and also by an inhomogeneous

plasma. March 10, 1965. 29 p. TN257. Practical aspects of the use of ac-dc transfer instruments, E. S. Williams Electrothermic transfer instruments may be used to make direct measurements of ac-dc difference or fre- quency influence. With a somewhat similar procedure an "unknown" a-c voltage or current may be accurately measured by determining the difference between it and a preset and accurately measured d-c equivalent. Test

circuits and procedures are described and data taking and calculations are illustrated. March 9, 1965. 10 p. TN258. A prerequisite to the utility of microgrammars,

W. C. Watt This paper takes up the question of a hitherto-ignored obstacle to the useful functioning of microgrammars in artificial intelligence systems. This obstacle consists

of the difficulty of "staying within" the microgrammar in man-machine communication, a condition rooted in the

fact that microgrammars produce a "language" which

consists entirely of English sentences, but of only some

English sentences: and it is hard or even impossible for the micro grammar-user to remember which sentences he

is allowed to use. Besides raising this problem, and

studying it in some detail, I indicate what steps may be

taken to overcome it; these are such steps as lend the microgrammar more "extrapolative symmetry". April 19, 1965. 22 p. TN259. A FORTRAN program for determining an empirical expression for a quantity measured at combinations of several levels of each of two

variables, M. N. Steel, F. L. McCrackin, and

J. Mandel

This note relates to a general procedure, reported else- where, for finding an empirical expression for the functional dependence of a measured quantity on two vari- ables. The procedure is applicable when measurements

of the dependent variable are available at m.n combinations of m levels of one variable and n levels of the

other; it leads to an algebraic expression relating the three variables. A Fortran program to perform the various steps of the general procedure is presented along with detailed in- structions for its use. The program also includes the calculation of an analysis of variance, of components of variance, of significance tests, tables of residuals, and a number of other quantities. April 12, 1965. 61 p. TN260. Research on crystal growth and characterization at the National Bureau of Standards July

through December 1964, Editor, H. F. McMurdie The National Bureau of Standards with partial support

from the Advanced Research Projects Agency of the Department of Defense is continuing a wide program of studies involving crystalline materials. These include

investigation of methods and theory of growth, study of detection and effects of defects, determination of physical properties, refinement of chemical analysis, and de- termination of stability relations and atomic structure. The types of materials range from organic compounds,

through metals, and inorganic salts to refractory oxides. This Technical Note, the fifth in the series, summarizes

the progress of these various projects from July through December, 1964, and lists the related publications and

participating scientists. May 8, 1965. 92 p TN261. Summary of current research on archival microfilm, C. S. McCamy and C. I. Pope

The discovery of aging blemishes on microfilm in stor- age has prompted a study of the statistical relationship

of incidence to conditions of preparation and storage, the chemical and physical nature of the blemishes, and measures to be taken to prevent their formation. This

paper is a report of progress in that study with recom- mendations based on current information. With few ex- ceptions, reports of aging blemishes refer to negative

silver-gelatin type microfilm in roll form. Extremely

small amounts of information loss have been reported.

In some large collections of microfilm, no blemishes have

been found. No evidence of biological attack has been

found. Apparently, image silver is ionized, migrates, and is reduced to colloidal silver. The reaction often proceeds in .the manner described by Liesegang for other

silver-gelatin systems. In laboratory tests, blemishes

formed in the presence of minute amounts of peroxides,

certain imbibed chemicals, and solid contaminants. Rec- ommendations include: avoiding excessive densities on

film, careful avoidance of physical damage to the image

layer, the use of a small concentration of iodide ion in the fixer, thorough washing, uniform drying, storage at low temperature and humidity in sealed cans, careful avoidance of air-borne reactants, increased use of positive copies for archival storage, and careful periodic in- spection of record films. April 16, 1965. 24 p. TN262. Accuracy in measurements and calibrations,

1965, Editors W. A. Wildhack, R. C. Powell, and H. L. Mason NBS estimates of uncertainties associated with physical measurements, and with some NBS calibration serv- 261
ices, are shown by 66 provisional "accuracy charts." Each chart is accompanied by a facing page giving a

brief statement of the state of the art and tentative plans

for NBS work in areas where improvement is needed. June 15, 1965. 145 p. TN262A. Accuracy in e and calibra

rricaland radio measurements

s, 1965, Editor R. C. Powell

This publication is a special edition of Technical Note

262 (see above abstract). As an aid to those primarily interested in electrical and radio measurements, a section of Technical Note 262 has been issued separately as Technical Note 262A. This Technical Note contains those charts that cover the calibration services from d-c

into the microwave region, available at the NBS Boulder

Laboratories, Boulder, Colorado. June 15, 1965. 85 p. TN263. Disclosure m: a precipitation indicator, moisture detector, vacuum ball valve, film strip printer, normal incidence interferometer, color sorter, and coaxial T, Editors D. Robbins and A. J. Englert This booklet presents descriptions and drawings of seven devices, embodying interesting and unusual solu- tions to problems frequently found in their respective

fields: a selective precipitation indicator system; a capacitance-type moisture detector; an apparatus for printing copies from film strips; a normal incidence in- terferometer; an apparatus for color sorting small, irregu- larly-shaped articles; and a coaxial T for radio-frequency

voltmeter calibrations. (Other disclosures on various subjects may be found in Technical Notes 237 and 253.) June 18, 1965. 27 p. TN264. HAYSTAQ. A me

chemical inforn zed sys

, E. C. Mardei

i for HAYSTAQ is a comprehensive computer system for searching chemical information and is particularly di- rected toward the stringent requirements of the U. S. Patent Office. The greatest activity to date has been in the design of a satisfactory method to search for chemical structures. A structure diagram is considered as a network, where the atoms or functional groups are the nodes and the bonds between them the links. The search

algorithm consists of attempting to match, via a topological tracing, a question network (structure) against each

structure in the file of chemical compounds stored on

magnetic tape. The structure search includes provision

for Markush structures and other generic concepts. Each

of 385 questions was matched against a file of 2,400

entries containing (because of the Markush feature) ef- fectively 162,000 compounds. The continuation of this work includes the use of the Hayward linear notation as

input and extension of the search routines to other kinds

of information associated with chemical structures. September 27, 1965. 58 p. TN265. Tabulation of published data on Sovu

devices, C. P. Marsden

ele.

handbooks published by the various ministries and insti- tutes of the USSR. Information is given on all active de- vices ranging from receiving to microwave devices, semi- conductor devices, and miscellaneous devices such as,

for example, photographic flash tubes and thermistors. October 1, 1965. 83 p. (Supersedes NBS Tech. Note

186).

: for millivolt signals, J.

s tabulation includes published data on Soviet

•on devices as collected from publications, mostly

TN266. Voltage ratio deteci

R. Houghton A voltage ratio detector circuit for measuring ratio; a-c and d-c signals 5 millivolts or larger is describ The ratio is determined with a precision voltage divi which is accurate to within 0.001 percent of the indica

ratio when the ratio is near one. The detector has su ent sensitivity and stability to indicate differences tween two signals of 0.01 percent. Experimental rest

are presented to show the relative, improvement in ser

tivity of this voltage ratio detector over the previou used transfer admittance method for the calibration vibration pickups. December 13, 1965. 12 p. TN267. Procedures for precise determination of then

radiation properties, November 1963 to Oc

ber 1964, J. C. Richmond, S. T. Dunn, D. P. DeWitt, and W. D. Hayes, Jr. A laser-source integrating sphere reflectometer was de- signed and built to measure the reflectance of specimens

at high temperatures. The sphere was calibrated for linearity of response at 0.632/l/ by means of a shallow

cylindrical cavity with a variable depth-to-radius ratio, having a lining of known reflectance. Preliminary tests showed that the flux emitted by a hot specimen at tem- peratures up to 2500°K will not invalidate the reflec- tance measurement. An ellipsoidal mirror reflectometer was calibrated for all known errors in the 1 to 7. 5fi range. A preliminary analysis indicates that the errors in mea

urement of absolute reflectance with this equipmei

should not exceed 2 percent. A review of the literature on relation of thermal radiation properties to other properties of materials is presented, together with a summary

of the work done in an effort to compute the spectral emittance of rhodium. Key words: Emissivity, emittance, high temperature re- flectance, infrared reflectance, radiation properties, reflectance, spectral emittance,

spectral reflectance, thermal radiation. De- cember 17, 1965. 62 p.

TN268. Transistorized building blocks for data ins; mentation, P. G. Stein A fourth family of etched-circuit logic cards has been developed at the National Bureau of Standards. It closely

parallels the design criteria and philosophy embodied in previous work, but differs in many respects. Each ci cuit description is separated physically from the othe.

to facilitate use as an application manual. Specific; dons, typical uses, graphic symbols, and reliability ai discussed in brief. 262
Key Words: Digital Circuits, Digital Instrumentation, Logic Cards, Logic Design Symbols, Etchedcircuit Package, Computer Logic. May 28, 1966. 118 p. rN269. Earth's field static calibrator for accelerometers,

P. S. Lederer and J. S. Hilten This paper describes a simple, relatively inexpensive

;ystem for the precise static calibration of acceleromeers in the earth's gravitational field with an estimated

imit of error of ±0.0004 g. The system consists of a rerisinn machinists dividing head on a surface plate and

rel. Experimental results obtained during

the calibration of three types of acceleromet( ; sho

indicai s and usefulness of the sys

Calibrator, Earth's Field Static Calibrator, Accelerometer, Dividing Head, and ±lg

Calibrator. February 1, 1966. 16 p. TN270-1. Selected val prop. s of chemical thermodynamic

Part 1. Tables for the first nty-three elements in the standard order

of arrangement, D. D. Wagman, W. H. Evans,

I. Halow, V. B. Parker, S. M. Bailey, and

R. H. Schumm

This Technical Note is an advance issue of a revision

>f the tables of Series I of the National Bureau of Standards Circular 500, Selected Values of Chemical Thermo- dynamic Properties, by F. D. Rossini, D. D. Wagman,

W. H. Evans, S. Levine and I. Jaffe. The revision, pre- pared in response to the increasing demand and need in the scientific community for a more current, self- consistent set of thermodynamic data for chemical sub- stances, is part of a continuing program of the NBS

Thermochemistry Section. Technical Note 270-1 contains the revised Tables

1-22 and part of Table 23 of Circular 500. As additional revised tables are completed, they will be published as Technical Notes 270-2, 270-3, etc., until the complete

revision has been made available. It was decided to this Note in parts in order to make the material

ble as soon after completion as practical. The

complete revision of the tables of Series I, including ref- :es and discussion of the sources of the values, be published as a contribution in the National Standard Reference Data Series. October 1, 1965. 124 (Supersedes Tables 1-22 and part of Table 23 of 500). TN270-2. Selected Values of Chemical Thermodynamic

properties. Part 2. Tables for the elements

twenty-three through thirty-two in the standard order of arrangement, D. D. Wagman,

W. H. Evans, I. Halow, V. B. Parker, S. M. Bailey, and R. H. Schumm

Technical Note 270-2 is the second of a series of publications containing material prepared as a revision

of the tables of Series I of National Bureau of Standards

Circular 500, Selected Values of Chemical Thermodynamic Properties. This Note contains revised Tables

24 to 32, covering the elements silicon, germanium, tin,

lead, boron, aluminum, gallium, indium, and thallium, and compounds of these elements following the Standard Order of Arrangement. Tables for the first twenty-three elements and their compounds, and a discussion of the symbols, conventions, units of energy, and conversion factors used in this series are given in National Bureau of Standards Technical Note 270-1. May 6, 1966. 62 p. TN271. Electrochemical analysis: studies of acids, bases, and salts by emf, conductance, optical, and kinetic methods, July 1964 to June

1965, Editor R. G. Bates

This survey of the activities of the Electrochemical Analysis Section, Analytical Chemistry Division, covers

the period July 1964 to June 1965. An attempt is made

to summarize a year's progress on the technical projects

of the Section in such a way as to stress the program and

capabilities of the organizational unit as a whole. Consequently, a description of facilities and equipment is presented first and is followed by brief summaries of the several lines of work currently under way. Emphasis is given to the reasons why each study was undertaken. The main areas of investigation include the study of

acidity and solvent effects in water, deuterium oxide, and water-methanol solvents by emf methods; the develop- ment of reference indicator bases for nonaqueous media

and reference materials for dielectric measurements; measurement of the thermodynamic properties of mixed

salt solutions; and investigation of special problems in trace analysis by conductometric and kinetic methods. The survey concludes with lists of the members of the Section staff, publications and manuscripts produced dur- ing the year, and talks given by the staff. September 6, 1965. 100 p. TN272. Spectrochemical analysis: optical spectrometry

x-ray fluorescence spectrometry, and electron probe microanalysis techniques, July 1964 to June 1965, Editor B. F. Scribner A summary is given of the activities of the Spectro- chemical Analysis Section for the period from July, 1964

through June, 1965. Activities in optical spectrometry

included studies of excitation by arcs and sparks in controlled atmospheres and by the laser probe, the measure- ment of arc temperatures, and atomic absorption spectrometry. In x-ray spectrometry, methods have been de- veloped for the analysis of copper alloys in solution, as

well as silver-base, and gold-base dental alloys. An

electron probe microanalyzer has been installed, and a description is given of the modifications that have been made to the instrument, the plans for future investigations, and some applications. Chemical and physical enrichment methods have been developed for the analysis of high-purity tin, zinc, and platinum. Homogeneity

tests and analyses have been performed in the develop- ment of standard reference materials. Other activities included analyses of samples to assist other NBS groups and government agencies, and literature surveys. List- ings are given of 20 publications and 14 talks by members of the Section within the year. October 21, 1965. 75 p. . 263
TN273. Analysis and purification section: summary of activities, July 1964 to June 1965, Editor J. K. Taylor This report describes the scientific programs and re- search activities of the Analysis and Purification Section of the Analytical Chemistry Division of the NBS In- stitute for Materials Research. Analytical research

areas include: gas analysis by mass spectrometry, po- larography, coulometry, microchemistry, stoichiometry, and cryoscopy. Research in methods of purification is concerned with distillation, high-temperature phase separations, and the ultra purification of chemical reagents. The facilities and general objectives of all programs are discussed. Research accomplishments described in some detail include: modification of mass spectrometer

inlet systems to facilitate analytical sampling, polaro- graphic analysis of lead alloys, coulometric calibration

of microvolumetric apparatus, precise analysis of copper

in small samples, development of apparatus for the puri- fication of inorganic fluorides by high-temperature phase

separations, and development of an adiabatic calorimeter

for determination of purity of volatile substances. October 1, 1965. 74 p. TN274. Organic chemistry: radioactive carbohydrates, sugars in solution, aldol condensations, molecular structure, syntheses of selected compounds, air pollution studies, reference materials (organic), July 1964 to June 1965, Editor H. S. Isbell The report describes work in progress in the Organic Chemistry Section of the Analytical Chemistry Division

at the National Bureau of Standards. It presents reviews

of recent contributions of the Section on the following

subjects: Synthesis of carbon- 14- and tritium-labeled carbohydrates, isotope dilution and double-label methods

of analysis, determination of kinetic isotope effects, use

of solvent isotope-effects for studying pyi anose-furanose

primary enoli- on, rates of rearrangement of one sugs r to another by bases, estimation of the relative stabilit es of isomeric hexoses, reversible aldol condensations, mechanism for the formation of saccharinic acids, formati 3n of branched- chain aldoses and linear ketoses by aldol condensations,

stereochemistry of monoaminotetrahydroxycyclopentane

derivatives, cyclic polyhydroxy ketones, phenylhydrazono- phenylazo tautomerism, acetamido-deoxyketoses, syn- theses and properties of selected organic compounds,

interaction of aromatic hydrocarbons with oxygen, oxidation of polycyclic, aromatic hydrocarbons on particulate

matter, loss on filtration of aqueous solutions of polycyclic, aromatic hydrocarbons, oxidation products of pyrene, and preparation of 1-phenyl-l, 3-butanedione chelates of chtomium and iron for use as new metallo-organic

standards. December 3, 1965. Ill p. TN275. Quantitative separations: titrimetry, gravimetry, flame photometry, spectrophotometry, gas

evolution and isotopic preparations, July 1964 to June 1965, Editor O. Menis

This is the first progress report of the Quantitative Separations Section covering the 1965 fiscal period. The

report encompasses several areas of analytical chemistry and discusses the activities of this section in rela- tion to the certification of values for standard reference

materials. These included a variety of ferrous, copper base alloys, high temperature alloys, titanium base al- loys, ceramic, clay, rock and actinide materials.

In the area of tritimetry, problems are discussed that deal with the prior separations associated with the de- termination of iron and cobalt in high temperature alloy. Also, the application of complexomettic titration with a potentiometric apparatus is described. In the gravimetric

studies, the application of thermogravimetric procedures

to establish a base line for weighing U O is illustrated. Current methods which were investigated for the deter- mination of aluminum in feldspar appear to give low re- sults and a need for a new approach is indicated. In another procedure, the partial separation of hafnium from zirconium by an ion exchange separation was achieved

prior to a spectrographic determination of this element. An atomic absorption apparatus was installed and tests with the new insttument and a modified flame spectro- photometer are presented. In the spectrophotometric competence, high sensitivity and high precision methods

are discussed and applied. Boron and beryllium were

successfully determined at the nanogram level of concentration. The differential spectrophotometric method was evaluated for the estimation of high concentration of nickel by the modified dimethylglyoxime procedure. In addition, spectrophotometric methods were applied to the determination of trace elements, As, Be and P in brass B and Zr in cast iron, B in high temperature alloy and

nickel in steel and cast iron. An initial investigation of the reaction of the brilliant green reagent with pentavalent antimony indicated that this method can be adapted

for the determination of antimony in white cast iron. In the area of gas evolution methods, a new apparatus is described in conjunction with a homogeneity study of oxygen in ingot iron and other materials. Also, the ap- paratus and procedure is presented for the determination

of nitrogen in materials containing refractory nitrides. Other aspects of the analysis of standard reference

materials are discussed from the standpoint of preparation and conversion of the material to a suitable sample

form, homogeneity testing, stability, and the cooperative work with outside laboratories. Special fields of analytical interest involving the conclusion of umpire uranium

analysis are discussed.

Finally, the isotopic standards preparation program is detailed for the uranium and plutonium materials. De- cember 27, 1965. 73 p. TN276. Radiochemical analysis: activation analysis, instrumentation, radiation techniques, and

radioisotope techniques, July 1964 to June

1965, Editor J. R. DeVoe

This is the second summary of progress of the Radio- chemical Analysis Section of the Analytical Chemistry

Division at the National Bureau of Standards. Arrangements for the new facilities at the reactor build- ing and Linac are in their final stages of completion. Additional wotk is described on the electronics for the handling of data from pulse height analyzers as well as

the use of digital computers for processing these data. A mossbauer spectrometer which uses optical inter- ferometry in the Doppler drive, and the mechanical de- 264
sign for the electromechanical drive described in last years report are presented. A description of chemical

shift of iron compounds is given. The use of a correction

factor for certain source detector geometries are de- scribed for Mossbauer spectroscopy. A new source of Sn 1IS1m in palladium which produces a very narrow line width is also described. For the first time a trace element has been certified in

a Standard Reference Material with the assistance of the activation analysis technique. Flux measurements for the NRL reactor are given. A number of special analy- ses for various NBS projects by activation analysis are described (e.g. argon in silicon, chlorine in polystyrene, hafnium in zirconium). A beta-gamma sum coincidence gamma ray spectrometer is described. A constant potential electrochemical method of analysis using radioisotopic tracers is presented which has

potential high sensitivity. A method of using radioisotopic tracers in heterogeneous equilibrium between an aqueous medium of cobalt to be analyzed and manganese

dioxide impregnated filter paper is described. Some re- sults on the precision of the substoichiometric radioiso- tope nalvsi of s :ed. Key words: NBS reactor, NBS Linac, digital computer,

digital computers frequency comprator, nu- clear instrumentation, argon in silicon, chlorine in polystyrene, hafnium in zirconium, neutron fluxes, gamma-ray spectrometers, copper and zinc in lung tissue, tellurium in brass, differential chemical shift, Mossbauer

spectroscopy, Mossbauer instrumentation, Sn 1 19m -Palladium Mossbauer sources, iron compounds, tin compounds, standardization

of iron compounds, radioisotope techniques,

controlled potential coulometry, substoichi- ometric radioisotope dilution, distribution coefficient of ferric thiocynate in isobutanol

water, radiometric techniques, sealed source

fabrication. January 7, 1966. 155 p.

Dm

-eraging devices for the infrared, S. T.

The spatial and angular sensitivity of infrared detectors recently has been investigated (1, 2). In order to eliminate this effect and obtain accurate measurements

in the infrared, it is necessary to distribute the flux as

uniformly as possible over the entire sensitive area of the

detector. A solution to this problem is presented in the form of several averaging devices developed at the National Bureau of Standards. Among the devices investi- gated are roughened NaCl windows, diffusing light ducts, and spheres with different coatings. Each device was

subjected to a series of tests to establish its averaging

capability and useful wavelength range. Results of these tests indicate that the use of a small sulfur-coated hollow sphere over the detector increased the accuracy

of most types of infrared reflectance measurements and,

at the same time, decreased the requirement for precise

optical alignment of the detector in the wavelength range

of 1.5 to 8 microns. The use of the sulfur-coated sphere

over a thermopile extends the usefulness of the multiplereflection specular reflectometer to about 10 microns.

Key words: Detector, Averaging Device, Spatial Sensitivity, Angular Sensitivity, Sulfur, and Inte- grating Sphere). December 9, 1965. 39 p. TN280. A peak ac-dc voltage comparator for use in a standards laboratory, L. A. M; An increased availability of high-precision a-c and

d-c power sources has allowed routine electrical measurements to be made in the field with a precision previ- ously possible only in the standards laboratory. Ac-dc

comparisons are being made on the basis of the peak,

rms, and average value of the sine wave source. The

peak ac-dc voltage comparator described in this report was developed for use in the standards laboratory to help meet the increasing demand for the certification of new

field instruments. The described instrument is capable

of establishing the ac-dc error of other peak comparators

at frequencies from 50 to 2400 Hz with an imprecision of less than 15 ppm. January 17, 1966. 29 p. Key words: Volta^ alternating, direct,

, standard, peak and

alibra

TN281. Materials for PLACEBO V, W. C. Watt This paper presi als which make the i grammar PLACEBO V accessible to inspection. In the form given here, the microgrammar may be used in com- pany with the requisite computer programs for producing

or analyzing English sentences of a certain biological

dialect, as part of a 'Question/Answer' device. PLACEBO V includes its predecessor, PLACEBO IV,

in the sense that every sentence generated by the earlier ncrogrammai is get ?rated i the same way by the lai nd other kinds of 'inclusion' are considered, and related to practical problemsof microgrammar-design.

January 17, 1966. 92 p. TN282. Keypunch controls for string-punching of statistical data, M. J. Brennan

This note describes controls for a keypunch machine

used to key statistical data with "string-punching tech- niques". Since the data are punched into cards that do

not contain fixed field sizes, an identification code is punched for each data entry. To avoid a split field (part on one card and the remainder on another), the keypunch machine is programmed to provide a justification zone in which an answer identification code or a "delete" code

can not be keyed. The cards are automatically serialized

for each questionnaire and an arrangement is provided to punch an end-of-questionnaire code in the last card for the questionnaire. (Other disclosures on various subjects may be found in NBS Technical Notes 237, 253 and

263.) February 11, 1966. 30 p. TN283. Nuclear and radiation standards of importance

to the National Atomic Energy Program, H.

W. Koch, H. J. Donnert, W. W. Havens, Jr., G. L. Rogosa, and L. Rosen A systematic approach to physical measurements in nuclear physics requires the establishment, availability, and use of standards. The standards of measurement 265
may consist of standard cross sections, foils, counters, and evaluated nuclear data. Because of the fundamental importance of measurement standards, the Nuclear Cross

Section Advisory Group has examined the definitions, re- quirements, characteristics, and availability of nuclear and radiation standards of importance to the national atomic energy program. March 31, 1966. 44 p.

TN284. An outline for cooperative action on the deter- mination of x-ray mass attenuation coeffici- ents in the wavelength range from 0.5 to 100°A (25 to 0.12 keV), K. F. J. Heinrich Sources of information on x-ray mass attenuation coef- ficients and the present status of data in this area are reviewed. Many gaps are observed in the existing data and some values derived by interpolation may be of questionable accuracy. Because of the importance of ac- curate mass attenuation coefficients, the extension and improvement of these measurements is proposed together with a plan for coordination of effort and exchange of in- formation. February 21, 1966. 13 p. TN285. File organization for a large chemical information system, R. Anderson, E. Marden, and

B. Marron The report describes a file structure which combines

list-processing concepts (for handling variable length in- formation records) with standard serial record arrange- ments (for identification information). The file organization was designed for a large chemical information sys- tem and includes both well-structured and unstructured (amorphous) information. An investigation was made of representative data inputs from the Department of the Army. The data to be put into the file, the nature of the

file structure, and the necessary programs for manipulation of file information have been considered as inter- dependent parts of a total system. Computer programs have been initiated to test the validity of the proposed

approach. Key Words: File organization, chemical information, chemical structures, linear notations, list processing, threaded lists, heirarchical files, master files, satellite files, structured files, level codes, pointers. April 18, 1966. 17 p. TN286. Spark source mass spectrograph program, July 1964 to June 1965, P. J. Paulsen and P. E. Branch

This report describes the activities of the spark source mass spectrograph project for the period from July 1964

through June 1965. The subjects covered include instru- ment modifications which resulted in lower backgrounds,

modifications planned for the near future, an outline of

the procedure used in an analysis, a description of data computation techniques, and experimental results obtained

for some NBS standard reference materials. Photographs

of the instrument with its modifications as well as photo- graphs of the improved mass spectrum are also included.

April 15, 1966. 19 p.

TN287. Disclosures on mangetic tape handler, focus

detector, multi-pen recorder, signal averaging

filter, electrostatic RMS voltmeter, back-up

ring for O-rings, and low temperature solid

state thermometer, Editors D. Robbins and

A. J. Englert This Note presents descriptions and drawings of seven

devices, embodying interesting and unusual solutions to problems frequently encountered in their respective

fields: a high speed magnetic tape handler, an electro- optical focus detector for a point light image, a multi-pen

recorder having a time delay arrangement, a multi-segment

signal averaging filter, an arrangement for measuring low

temperatures using a silicon radiation detector, a high pressure back-up ring for O-rings, and an electrostatic RMS voltimeter. Other disclosures on various subjects may be found in NBS Technical Notes 237, 253, 263, and 282. April 8, 1966. 28 p. TN288. The measurement philosophy of the pilot pro- gram for mass calibration, P. E. Pontius The Pilot Program for mass measurement is the result

of a consideration in which the values produced are thought of as the products of a mass measurement process. The collective performance of elements of the mass

measurement process results in establishing the process

precision which, under certain conditions, can be de- scribed quantitatively by pertinent performance parameters. The uncertainty attached to the product of the process, the measured value, is computed from these parameters and reflects the total performance of the process rather than the immediate measurement which

might have produced the value. Interpretations of uncertainty and surveillance tests are discussed. The Pilot Program in mass measurement, whereby suitable process

performance parameters can be established for precise mass measurement processes in other facilities, is

Key Words: Mass measurement process, process per- formance parameters, and uncertainty. May 6, 1966. 39 p. TN289. Status report. National standard reference data system, April 1966. Editor Edward L. Brady

This report summarizes the status of the activities of

the NBS Office of Standard Reference Data as of March,

1966. It provides a detailed review of the data compilation activities within the seven broad categories within

the technical scope of the program: (1) nuclear data,

(2) atomic data and molecular data, (3) solid state data,

(4) thermodynamic and transport data, (5) chemical ki- netics, (6) colloid and surface properties, and (7) mechanical properties. Plans for an information services program are also outlined. Certain problem areas are

identified. The appendix includes a listing of properties

with which the program is concerned and a listing of the advisory panels of the Office of Standard Reference Data. Key Words: Nuclear data, atomic and molecular data, solid state data; thermodynamic and trans- 266
port properties, chemical kinetics, colloid and surface properties, mechanical properties; information services, standard refer- ence data. June 1, 1966. 79 p.

TN290. Information handling in the National Standard Reference Data System, F. L. Alt A preliminary plan is presented for the selection, acquisition, intellectual organization, and storage of the information which will underlie the Information Services

Operation of the National Standard Reference Data System, as well as for methods of locating desired information items in storage, retrieving, and displaying or communicating them. Questions of the use of computers for these purposes are discussed, including selection of equipment, arrangement of digital storage, input format, remote access, and the economics of choosing certain functions of the system for mechanization. Also, an in- terim system, based on conventional and, in the main, manually operated files, is described. Key Words: Computer-aided inquiry service, data re- trieval, file mechanization, information retrieval, standard reference data. July 1, 1966. 24 p. TN291. A bibliography on ion-molecule reactions, January 1900 to March 1966, F. N. Harllee, H. M. Rosenstock, and J. T. Herron The present document is a bibliography on ion-molecule

reactions of chemical interest. The bibliography is listed in a chronological-alphabetic arrangement and in- cludes 431 titles and references taken from the published

literature since 1900. The coverage is limited to reactions between ions and molecules leading to changes in the atomic composition of either the projectile ion or target molecule. No attempt has been made to completely

cover resonant charge exchange or elastic scattering. Key Words: Bibliography, ions, molecules, reactions. June 28, 1966. 38 p.

TN300. Characteristics of the earth-ionosphere waveguide for VLF radio waves, J. R. Wait and

K. P. Spies The principal results of this technical note are graphical presentations of the attenuation rates, phase velocities, and excitation factors for the dominant modes in the earth-ionosphere waveguide. The frequency range con- sidered is 8 kc/s to 30 kc/s. The model adopted for the ionosphere has an exponential variation for both the electron density and the collision frequency, and the ef- fect of the earth's magnetic field is considered. Comparison with published experimental data confirms that the minimum attenuation of VLF radio waves in daytime

is approximately at 18 kc/s, while at night it is some- what lower. The directional dependences of propagation

predicted by the theory are also confirmed by experi- mental data. December 30, 1964. 93 PTN301. On the formulation and numerical evaluation of

a set of two-phase flow equations modelling

the cooldown process, S. Jarvis, Jr. A model of transient two-phase flow in a pipe is constructed in Eulerian coordinates assuming a single ve- locity but independent temperatures in the two phases. Experiments on the numerical integration of the system

for Cooldown problem by both Lax and Courant-Isaacson- Rees methods indicate that a very fine spatial difference net must be used to compensate for the numerical diffu- sion essential to computational stability if a second

surge is to be realized. January 4, 1965. 48 p.

TN302. Bibliography of fading on microwave line of sight tropospheric propagation paths and as- sociated subjects, H. T. Dougherty A collection of titles and abstracts is presented for articles dealing with the microwave fading that has been observed on tropospheric line of sight paths. Selections

are included for related subjects such as: measurement

of meteorological factors; spatial, frequency and time

diversity reception; and attenuation due to trees and

buildings. Also included is a subject index and an

author index. August 31, 1964. 113 p. TN303- Extension of programs for calculations of great

circle paths and sunrise-sunset times, J. H. Crary A previous note by Brady and Crombie [1964] describes methods and a program for calculating and plotting sunrise and sunset times at specified heights and distances

along a great circle path determined by the locations of the end points. The program also plots the distribution

of darkness or daylight along the path versus time. This program has been modified to remove some re- strictions on the use of the earlier program, and to pro- vide the option of calculating the short or long great

circle path. In addition, transmitter, receiver, and solar bearings are also calculated and plotted. Some interest- ing characteristics of the short and long paths from Rugby, England, to Byrd Station, Antarctica, are shown.

February 18, 1965- 19 p. TN304. Bibliography on tropospheric propagation of radio waves, W. Nupen

This is the fifth in a series of bibliographies being prepared by the M&GA staff of the American Meteorological Society for the Boulder Laboratories of the National Bureau of Standards. The first four were:

1. Bibliography on Ionospheric Propagation of Radio Waves (1923-1960). NBS Technical Note No. 84, Oct.

I960. (1404 items)

2. Bibliography on Meteoric Radio Wave Propagation. NBS Technical Note No. 94, May 1961. (368 items)

3. Bibliography on Auroral Radio Wave Propagation. NBS Technical Note No. 128, Jan. 1962. (297 items)

4. Bibliography on Atmospheric Aspects of Radio

Astronomy. NBS Technical Note No. 171, May 1963. (1013 items) 267
The present bibliography on Tropospheric Propagation

of Radio Waves contains over a thousand abstracts or

titles taken from the literature published between 1945 and 1964, incl., but the bulk of the literature comes

after 1955. The subject matter in this bibliography is confined to the effects of the Earth's atmosphere on radiofrequency

radiation from 10 csp to 100,000 Mc. April 1, 1965. 302 p. TN305. Atlas of fourier coefficients of diurnal variation

of foF2. Part II. Distribution of amplitude and

phase, W. B. Jones and R. M. Gallet This atlas is devoted to the study of amplitude and phase from the diurnal analysis of foF2 monthly median.

It is concerned with their variations—both systematic and random—as functions of latitude, season and solar

activity. The atlas contains a series of graphs and of

the distribution of amplitude and phase and tables of phase distribution for four seasonal months of high and low years of solar activity. Emphasis is placed on the study of the phase distributions for determining the opti- mum separation of harmonics produced mainly by noise

from those representing mostly real physical variation. February 14, 1965. 114 p. TN306. Studies of solar flare effects and other iono- spheric disturbances with a high frequency Doppler technique, V. Agy, D. M. Baker, and

R. M. Jones

This report presents some results of work done with a Doppler technique for studying ionospheric disturbances. The theoretical results include a calculation of the fre- quency shifts to be expected from changes in the parameters of a parabolic model ionosphere and a method of

determining the height variation of the time rate of change

of electron density during ionospheric disturbances. It is shown that the frequency shift, with oblique propagation, is the same as that with vertical propagation on the equivalent vertical-incidence frequency. The experi- mental results include a comprehensive catalog of all flare effects observed from 1 October I960 through 31 De- cember 1962, a statistical study of these flare effects, and the Doppler records of some solar flare effects detected during this period. A model in which the time

rate of change of electron density is zero below the bot- tom of the E layer, and constant above that height, ex- plains the frequency dependence of the maximum Doppler

shifts observed during some solar flares. April 28, 1965. 147 p. TN307. Phase and amplitude diversity in over-water H. B. Janes, A. W. Kirkpatrick, D. U. Waters, and D. Smith Propagation measurements at 9.4 and 9.2 Gc/s were made over a 47 km, line-of-sight, over-water path at Eleuthera Island in the Bahamas. The purpose was to study the signal amplitude and phase variations at the two frequencies, and in particular, the variations in the phase difference and amplitude ratio ("differential amplitude") of the two frequencies. The results include

power spectra of phase and phase difference variations

(from about 10" 4 to 4 c/s) and cumulative distributions

of amplitude, differential amplitude, and phase differ- ence. April 12, 1965. 63 p. TN308. Data reduction for stable auroral red arcs ob- served at Rapid City, South Dakota, J. E. Cruz, R. Davies, L. K. Droppleman, E. Marovich, L. R. Megill, M. H. Rees, L. Reisbeck, and F. E. Roach

All sky photometric surveys in the 6300 A [Ol] radiation obtained during the International Geophysical Year

at Rapid City, South Dakota have been reduced. The

analysis is described and the results for the night of September 16/17, 1958 are printed as isophote maps. These maps clearly show the presence of an arc and can

be, therefore, a useful tool for further investigations of

the stable auroral red arc. May 3, 1965. 53 p. TN309- A bibliography of experimental saturation properties of the cryogenic fluids, N. A. Olien and L. A. Hall A bibliography of 507 references to experimental work

is presented for the properties of the cryogenic fluids

in the solid, liquid, and vapor phases at saturation. The cryogenic fluids included are helium, hydrogen,

neon, nitrogen, oxygen, air, carbon monoxide, fluorine, argon, methane, and isotopes of helium, hydrogen, and

methane. Each article has been reviewed and coded for properties, method of presentation of the data, and temperature range. An index lists each fluid in five categories: solid-solid transition, solid-liquid transition, solid-vapor transition, liquid-vapor transition, and triple point. For helium the liquid-liquid transition is also included. Each category is indexed by the properties: pressure-temperature data, density and heat capacity of

all phases at saturation, and latent heats. April 9, 1965- 115 p. TN310. Attenuation of the ground wave of a low fre- quency electromagnetic pulse, J. C. Morgenstern and J. R. Johler The attenuation of the peak of the ground wave EM

pulse is presented as a function of distance. These at- tenuation functions are compared to combinations of single frequency attenuation functions and simple at- tenuation functions based on inverse distance raised to integral and non-integral exponents, (l/d) n

. April 1965. 24 p. TN3H. Computation of the permeability and permittivity of a relatively small ring sample in a

toroidal coil, E. G. Johnson, Jr. The derivation and the FORTRAN machine program

are presented for a formula which gives the impedance of a partially filled toroid coil. This formula shows the re- lationship of the complex permeability and permittivity

of the ring material, the dimensions of the coil and sample, and the frequency of the applied electromagnetic

field. Limitations of the formula due to proximity of the

ring and coil, range of permeability and permittivity of 268
the ring, and uniformity of the coil winding are considered. The cost of the program in terms of computer

time is also considered. The principal value of the for- mula is to accurately determine the permeability and

permittivity of ferrites. Key Words: Complex permeability and permittivity, FOR- TRAN, impedance, toroid coil. January 25, 1966. 37 p. TN312. Unassigned. TN313- On the effects of heavy ions on LF propagation,

with special reference to a nuclear environ- ment, J. R. Johler and L. A. Berry

Natural disturbances and high altitude nuclear detonations produce large quantities of ions in the ionosphere

and in the atmosphere. The effect of such ionization on

the propagation of LF radio waves is not in general

negligible. In fact, physically realizable production

rates can be postulated in which the ions rather than

the electrons control the propagation of radio waves

around the terrestrial sphere. Therefore, considering

only an electron gas type plasma as an ionosphere model

is subject to possible grave errors in the theoretical prediction of LF propagation. The theoretical solution

of the heavy ion problem requires the introduction of an equation of motion or hydrodynamic equation for each gas constituent. June 7, 1965- 76 p. TN314. Stability of two-phase annular flow in a vertical pipe, S. Jarvis, Jr. The theory of hydrodynamic stability for infinitesimal disturbances is applied to the steady symmetric annular

flow of two incompressible fluids in a vertical pipe. The

resulting 12 x 12 complex determinant for the determination of curves of neutral stability is reduced, by suitable approximations, to an 8 x 8 one, and numerical methods

are used to determine some neutral curves for air-water mixtures. June 7, 1965- 89 p. TN315. A method for obtaining the parameters of electron density profiles from topside ionograms,

R. S. Lawrence and M. J.Hallenbeck We present sample results of a model-fitting procedure which involves adjustment of physically meaningful

parameters of a model ionosphere so as to minimize the mean square difference between the observed virtual depths and those calculated for the model. The adjust- ment is made subject to additional constraints such as

(1) physically reasonable limits to the values of the parameters and (2) agreement with any available auxiliary information such as the electron density at the satellite. The method requires more computer time than do conventional methods but compensates by making extremely economical use of observational data. It has been demonstrated that the method will provide useful information

from data which are too scanty to be usable by lamination or polynomial methods. When, as occasionally happens, the process fails to find a useful answer, the rea- son appears to be that the ionosphere cannot be represented by the model being used. On the other hand, the use of physical limits on the parameters seems to insure

that erroneous or multiple solutions will not occur. August 3, 1965. 31 p. TN316. Solubility of solids in dense gases, J. M. Prausnitz The thermodynamics of solid-dense gas equilibria is discussed, and two techniques are described for calculating the solubility of a solid component in a gas at high pressure. The first one is based on the recent empirical equation of state of Redlich which, in turn, is derived from Pitzer's generalized tables of fluid-phase volumetric properties. The second one is based on the Hildebrand-Scatchard theory of solutions. Both methods

give good semiquantitative results but cannot accurately

predict solubilities from pure-component data alone. July

1965. 45 p. TN317. Boiling heat transfer for oxygen, nitrogen, hydrogen, and helium, E. G. Brentari, P. J. Giarratano, and R. V. Smith This study has been conducted to provide an orderly examination of the information relative to boiling heat

transfer for four cryogenic fluids. The general approach

has been to examine experimental data with respect to the predictive correlations which would appear to have

probable success and which would be likely to be used

by design engineers. These correlations were graphically and statistically compared. The results are discussed, and when it appears a best or acceptable recommendation

can be made, computation aids for designers are included. These aids are in the form of graphical presentations for preliminary studies and equations for computer studies. The authors have also indicated the apparent limits for the use of these correlations, when possible. The ef- fect of many variables which would often be significant are not included in die predictive correlations. The in- fluence of these variables is discussed in a separate

section on boiling variables. Key Words: boiling, cryogenic, film, forced-convection,

free-convection, helium, hydrogen, nitrogen, nucleate, oxygen. September 20, 1965- 119 p. TN318. A numerical representation of CCIR Report 322

high frequency (3-30 MC/S) atmospheric radio noise data, D. L. Lucas and J. D. Harper, Jr. Geographic and frequency dependent distributions of atmospheric noise power enumerated in CCIR Report

322 [1964] are approximated by series expansions for use in electronic computers. Coefficients of Fourier

series representation of worldwide geographic dependence

and power series representation of both mean and decile

variability of the frequency dependence are tabulated. Representative contour charts of all distributions are shown along with sample longitudinal and latitudinal variations. 269
Key Words: Numerical, representation, high frequency

atmospheric, radio, noise, computer. August 5, 1965- 95 p. TN319. Numerical values of the path integrals for low

and very low frequencies, L. A. Berry and

M. E. Chrisman

Numerical values of the path integrals for the first five hops are given as a function of distance from 1000 km to 8000 km, for frequencies of 10, 20, 30, 60, 100,

150, and 200 kHz, for sea paths, and for land paths with

conductivities of 0.01 and 0.001 mhos/m, assuming re- flection heights of 60, 70, 80, 90, and 100 km. For con- venience, ground wave curves for the same parameters

are given. Using these values, and any ionospheric re- flection coefficients, the individual time modes, and the

total field can be calculated simply. The calculation is valid near the caustic and in the shadow region. The

path integrals can also be used to extract ionospheric

reflection coefficients from experimental data. Key Words: path integrals, wave hops, low frequencies

propagation, diffraction. September 2, 1965

105 p. TN320. Unassigned. TN321. Spark planing damage in copper, J. J. Gniewek,

A. F. Clark, and J. C. Moulder The damage to copper crystals, produced by spark planing operations, has been measured using a dislocation etch pit technique. The tabulated results show the depth of damage to vary from 9.7 - 1.1 mm on the coarsest

planing range used to 0.2 - 0.3 mm on the finest range. Two photomicrographs showing the etch pit density in- ;ar the spark planed surface are included. Key Words: copper, damage, dislocations, spark-erosion. September 6, 1965- 6 p. TN322. Surface tensions of normal and para hydrogen,

R. J. Corruccini The published data on the surface tensions of normal hydrogen from three investigations are apparently in dis- agreement by about 10%. In this note it is shown that these data are actually in agreement within about 1% if properly computed. The resulting concordant data are represented by functions and by a table suitable for linear interpolation. Key Words: Hydrogen, Liquid, Surface tension. August 11, 1965. 17 p. TN323- Refractive index and dispersion of liquid hydrogen, R. J. Corruccini The published experimental values of the refractive index of liquid hydrogen have been correlated by calculating and' comparing the values of the Lorentz-Lorenz

ratio as a function of wavelength. Because of the scatter found by this analysis, it is proposed that more accurate values can be calculated from available data of other kinds, namely, the dielectric constants determined

by Stewart and the optical dispersion determined for the gas at STP. Formulas for this calculation are given. Key Words: Dispersion, hydrogen, index of refraction,

liquid, optical, refractive index. September 24, 1965. 22 p.

TN324. Interference predictions for the instrument landing system, G. D. Gierhart and M. E. Johnson

Co-channel and adjacent-channel interference predictions for the Instrument Landing System are presented

in this report. Information on the various types of ground

facilities involved is given first. Propagation mechanisms applicable to the 108 to 112 Mc/s frequency range

are discussed second together with the calculation of transmission loss and its variability. Third, the sta- tistical treatment of interference problems is explained.

Finally; the results of the study are presented as curves

of normalized desired-to-undesired signal strength ratios versus distance from the desired station. Aircraft alti- tudes of 1,000, 6,250, 12,000, and 18,000 feet along with

station separations ranging from 20 to 330 nautical miles were considered. Detailed procedures, mathematical formulas, and computer programs used are discussed in the Appendices. Key Words: Instrument Landing System, Interference

Predictions, and Propagation. September

1965- 42 p. TN325- Numerical sin tion of ionospheric

:nts, T. M. Georges The Fejer [1955] pulse interaction experiment is simulated numerically by solving, in an iterative fashion, the electron energy balance and magnetoionic propagation equations over a height-time "matrix" representing a dis- turbed ionosphere. The complex interdependence of physical variables is more accurately represented by including "self-distortion" effects on the disturbing pulse, and allowing electron collision frequency and the energy loss coefficient (G) to vary with electron energy and time. Provision is made for nonrectangular dis- turbing pulses as well as finite-length probing pulses. Phase as well as amplitude interaction effects are calculated. Absorption and phase shift computations are based on

the Appleton-Hartree or Sen-Wyller complete (arbitrary angle of propagation) formulations, but the insertion of more sophisticated developments in interaction theory, including electron density perturbations, should be possible without appreciable increase in program complexity. Representative calculations demonstrate the effects

of variations in experimental parameters, perturbations of ionospheric conditions, and various interpretation al assumptions. The numerical approach offers advantages of simplicity and flexibility to those engaged in design and

interpretation of wave interaction experiments. Synthesis

of D-region electron density and collision frequency pro- 270
files, using the technique "in reverse," should prove

superior to presently used trial-and-error methods. Key Words: Cross modulation, D region, ionosphere, Luxembourg effect, nonlinear propagation, wave interaction. October 25, 1965. 42 p. TN326. An atlas of solar flare effects in the ionosphere observed with a high-frequency Doppler tech- nique, September 1960-December 1962, D. M. Baker Records of selected solar flare effects (sudden fre- quency deviations) in the ionosphere detected by a high frequency Doppler technique from September I960 through December 1962 are presented. When available, records

of short wave fadeouts (SWF) are also given. Key Words: solar flare effects in the ionosphere, short- wave fadeouts, sudden frequency deviations, Doppler technique. December 1, 1965- 116 p. TN327. The significance of dimensionality in the spin wave theory of ferromagnetism, H. Unruh The significance of dimensionality in the magnetic

properties of a single domain ferromagnetic system is determined utilizing a new approach to the spin wave

theory and a few plausible assumptions. If conditions

are such as to produce spontaneous magnetization in a

finite temperature range for a specific dimensionality

then under the same conditions there exists a finite temperature range for every dimensionality in which spon- taneous magnetization occurs. Key Words: Spin Waves, Linear Chain, ferromagnetism,

April 19, 1966. 14 p. TN328. Some properties of the eigen functions and eigen- values introduced by Bethe for the linear chain of atoms, H. Unruh, Jr. The operations S

2

i/r and S*^, in which i/risan exact

eigenfunction obtained by Bethe for the linear chain of localized spins, are discussed. The operations S

2 and

S- are the usual square of the total angular momentum

and the raising and lowering operators respectively. The results, valid for an arbitrary number of spin inver- sions, show, as expected, that all possible states of the system can be achieved by omitting all excitations as- sociated with zero wave number but requiring each state

to take all possible orientations in space. Key Words: Spin waves, linear chain, ferromagnetism.

April 19, 1966. 21 p.

seasonal variations are shown and compared with previous

investigations. Key Words: Nightglow, Seasonal, Zenith, [Ol] 5577A,

[01] 6300A, Nal 5890-96A. January 10, 1966. 46 p. TN330. Computations of the antenna cut-back factor for LF radio waves, D. C. Hyovalti There are several methods for evaluating the cut-back

factor of geometric optics, e.g., the flat-earth approxi- mation, the contour integral, and the residue series summation methods. Wait and Conda give quite extensive

details of the theory of these three methods in their 1958

paper, and Johler [1961, 1962] elaborates even further.

In this paper each of the above mentioned methods is investigated, and calculations are made for various fre- quencies and distances. The frequencies used are pri- marily LF; however, frequencies up to 1 Mc/s are considered. Several conductivities and dielectric constants

are used, varying from sea water (a=5 mhos/m, e2=80) to typical earth (ct= 0.005 mhos/m, e 2 =15). The permittivity lapse factor, a, is varied from 0.75 to 1.0 with most of the computations being done for a = 0.75 and 0.85- Only

calculations for vertical electric polarization were carried out in this paper. Key Words: antenna cut-back factor, computations, low

frequency radio waves, geometric optics,

flat-earth approximation. November 26, 1965- 42 p. TN331. A 100 kW 2-25 Mc/s distributed amplifier, de- signed for use with 10kW ionospheric sounders,

W. B. Harding, M. W. Woodward, and J. C.

Carroll The principles of distributed amplification have been known for many years and have been applied to fast rise time pulse and oscilloscope amplifiers for small-signal

applications [Percival, 1935-37; Pettit and McWhorter,

196 1] . This paper describes the design, construction, and testing of an r-f distributed amplifier intended for ionospheric sounding and backscatter applications. The

amplifier has a power gain of 10 dB and a rated output of 100 kW peak pulse power, over a range of 2 to 25 Mc/s. A feature of this amplifier is the elimination of input and output transformers. Key Words: Amplifier, balanced, bandwidth, ionospheric, power gain, sounder, sweep frequency. February 15, 1966. 18 p. TN332. Carbon dioxide spectral line positions and in- tensities calculated for the 2.05 and 2.7 micron regions, R. F. Calfee and W. S. Benedict TN329. The seasonal variation of nightglow Nal 5890- The spectral line positions and intensities for the car- 96A, [OI] 5577A and [Ol] 6300A in the tropics, bon dioxide bands occurring in the 2.05 and 2.7 micron

L. L. Smith and R. W. Owen regions of the infrared spectrum are listed. Lines with

intensities down to 10" 7 cm"'/atm cm are listed for a A study is presented of one year (July 1961-July temperature of 296°K.

1962) of systematic zenith observations of the nightglow emissions [Ol] 5577A, [Ol] 6300A, and Nal 5890-96A at Key Words: 2.05^, 2.7^, carbon dioxide, intensities and

the Haleakala Observatory (latitude N 20.7°). Observed line positions. March 15, 1966. 110 p. 2 71
TN333. The viscosity and thermal conductivity coeffi- cients of dilute argon between 100and 2000°K

from the Kihara potential function, H. J. M. Hanley The variation of the force constants of the LennardJones, Exp: 6, and Kihara potential functions was in- vestigated by comparing the Chapman-Enskog kinetic theory expression for the viscosity coefficient with the experimental viscosity of dilute argon. It was found that

this variation was more pronounced than expected. It was necessary to rationalize the choice of the force constants of each function before using the function to compare theory with experimental data. Of the three, the Kihara was found to give the best correlation, and tables

of the viscosity and thermal conductivity coefficients of dilute argon between 100 and 2000°K were computed from

this potential and the Chapman-Enskog equations. Key Words: Force-constants, potential functions,

Lennard-Jones, Kihara, Exp: 6, viscosity,

argon, correlation, thermal conductivity,

self-diffusion, kinetic theory. March 11, 1966. 23 p. TN334. An introduction to sampled data and switching

logic, T. L. Davis

This note presents introductory material on the subjects of Fourier series and integral representations of

data, operations on data (i.e., correlation, convolution, and sampling), Boolean algebra, and combinatorial logic

circuits. The presentation is tutorial and stresses the operations and their effects rather than mathematical

rigor. Key Words: Switching logic, sampled data, Fourier series, Fourier integrals, correlation, and computers.

April 1, 1966. 66 p. TN335- Zonal harmonics in low frequency terrestrial radio wave propagation, J. R. Johler

If R n and Tn are ground and ionosphere reflection coefficient matrices and / is the unit matrix, then for the

terrestrial waveguide boundaries, a geometric series

|/ + ^ R„ | for each zonal harmonic mode, n, results

in a rapidly converging zonal harmonic series. Thus, by an interchange of the order of summation of the two

series, the zonal harmonic series can be employed to calculate each term of the geometric series. This method of analysis provides a practical solution

to the propagated LF, VLF, ELF terrestrial waveguide

field. Thus, geometric series terms (often called wavehops) can be calculated quickly and accurately with the zonal harmonic series. The summation of the geometric

series than provides an efficient method for calculating

the total field (or waveguide mode sum). The simplicity of the analysis is an attractive feature when compared

with the complex integral method. Computation speed is obtained on the large scale computer by use of recursion

formulas for the Legendre and spherical wave functions.

It is noted that the terms of the geometric series in the high frequency limit give the geometric-optical rays. An improved definition of the reflection coefficient matrix is presented which accounts for the reflection process in a manner which can be justified both mathematically and physically. In fact, the entire reflection coefficient matrix for the anisotropic ionosphere can be

retained as a variable of the zonal harmonic summation

process with resultant improvement in computation ac- curacy. Demonstrative computations indicate considerable advantage in the method as an alternate approach to the propagation problem. Key Words: Extra low frequencies, geometric-optics, geometric-series, LF, VLF, ELF mode

theory, low frequencies, terrestrial radio wave propagation, very low frequencies, zonal harmonics. April 13, 1966. 23 p.

TN336. Calculation of the admittance of a parallel plate capacitor containing a toroid-shaped sample,

E. G. Johnson, Jr. The theoretical admittance of a toroid-shaped sample

in a parallel plate capacitor system is developed. This

calculation represents a first and second order perturbation correction to the usual quasistatic formula. The FORTRAN listing of the machine program is included. The analysis is done under the condition that the sample

is not in contact with the capacitor plates and can be described by a complex permeability, ii M , and complex

permittivity, e M

. Key Words: Fortran, Lossy materials, Parallel plate capacitor, Permeability, Permittivity, Theoretical admittance. April 21, 1966. 35 p.

TN337. Advances in ionospheric mapping by numerical methods, W. B. Jones, R. P. Graham, and

M. Leftin Paper describes recent progress made at ITSA (for- merly CRPL) to improve numerical methods for mapping

and predicting ionospheric characteristics used in tele- communication. Two major problems are considered:

( 1) tendency of maps to smooth out physical properties of

the ionosphere, particularly at low latitudes and (2) ambiguous values at geographic poles and resulting dis- tortions in immediate surroundings. The second problem

is overcome by means of a universal time analysis. Sig- nificant improvement is made in the first problem by the use of a modified magnetic dip coordinate. A general

description is given of the new procedures for forming numerical maps, including a number of illustrations. Also included are a discussion of the use of numerical maps in the revised form and a Fortran Program for evaluating numerical maps of ionospheric characteristics and

for calculating the MUF(ZERO)F2 and MUF(4000)F2. May 12, 1966. 71 p. 272
4. TITLES OF PAPERS PUBLISHED BY OTHERS

1960 to 1965 On pages 274 to 397 are listed papers by the Bureau staff that have appeared in other journals. (The papers listed for the years 1950-

195 9 form a supplement to the corresponding listing for the same

period given in National Bureau of Standards Miscellaneous Publication 240. ) The listing is alphabetical by title under year of publication. Each paper is preceded by a number that serves to key the paper to the index. These papers are not for sale by the Government, but may usually be obtained directly from the author or from

the publisher of the appropriate journal.

273
1950

16A. Accuracy with which two loads can be matched

on a magic tee, A. C. McPherson and D. M. Kerns. Electronics 23, No. 190, 192 (1950). 33A. Ceramics at the National Bureau of Standards,

H. Insley. Am. Ceramic Soc. Bull. 29, No. 1, 1-5 (Jan. 1950).

94A. Note on the condition of matrices. (Notes on Numerical Analysis), 0. Taussky. Math. Tables

and Other Aids to Computation 4, 111-112 (1950). 113A. Problems of drainage and venting, R. S. Wyly. Yearbook of the American Society of Sanitary Engineering XXVIII, 201-210 (1950). 135A. Standards for pH determinations, E. R. Smith

and R. G. Bates. J. Soc. Leather Trades Chemists

34, 394 (1950).

152A. The measurement of X and gamma radiation over

a wide energy range, L. S. Taylor. The Silvanus Thompson Memorial Lecture, British Institute of Radiology, p. 27 (July 7, 1950).

152B. The nodule method of measuring the adhesion

of electrodeposited coatings, A. Brenner and

V. D. Morgan. 37th Annual Meeting, Proc. Am. Electroplaters' Soc. (1950). 165A. Versatile pneumatic instrument based on critical flow, W. S. Wildhack. Rev. Sci. Instr. 21, 25 (1950). 1951

192A. An optical strain gage for use at elevated

temperatures, P. R. Weaver. Exptl. Stress Anal.

9, No. 1, 159 (1959). 209A. Comparisons of writing inks by paper chromatography, W. Souder and W. H. Smith. Identification News, p. 4 (Nov. 1951).

226A. Early work of the National Bureau of Standards, L. J. Briggs. Sci. Monthly 73, No. 3, 166

(Sept. 1951).

247A. Hydrogen ion concentration, R. G. Bates and

E. R. Smith. Encyclopedia of Chemical Technology

VII, 711-726 (1959). 248A. Hydrogen sulfide precipitation of the ele- ments from 0.2-0.5 normal hydrochloric acid, J.

I. Hoffman. Chem.-Anal. 50, No. 1, 30 (Mar. 1951)

.

251A. Ionization of liquids by radiation, L. S. Taylor. J. Chem. Phys . 48, 168 (1951). 251B. Isolation, identification, and estimation of gaseous pollutants of air, M. Shepherd, S. M. Rock, R. Howard, and J. Stormes. Anal. Chem. 23, 1431-1440 (Oct. 1951).

253A. Machine methods for finding characteristic

roots of a matrix, F. L. Alt. Proc. Computation

Seminar, Dec. 1949, p. 49-53 (IBM, New York,

N. Y., 1951).

263A. National Bureau of Standards: A semicentennial, E. U. Condon. Science 114, No. 2955, 3 (Aug. 17, 1951).

286A. Photographic X- and gamma-ray dosimetry, M. Ehrlich and S. H. Fitch. Nucleonics 9, No. 3, 5-17 (Sept. 1951).

287A. Preparation of bubbler tips, C. L. Gordon.

Anal. Chem. 23, 394 (Feb. 1951).

304A. Saving precious alloys by intelligent use of alternatives, T. G. Digges . Western Metal Congress, Oakland, Calif., p. 817 (Mar. 21, 1951).

306A. Semi-automatic instruction on the Zephyr, H.

D. Huskey. Ann. Harvard Computation Lab. 26. 83-

90 (1951).

316A. Standards for pH determinations, R. G. Bates

and E. R. Smith. Compt. Rend, de la 16me Conf

.

Intern. Union Pure and Appl. Chem. p. 72 (1951). 332A. The development of electronic digital com- puters at the National Bureau of Standards, E. W. Cannon. Les Machines a Calculer et la Pensee

Humaine, Colloques Intern, du Centre Natl, de la Recherche Sci. XXXVII, 87-99 (Paris, France,

1951) . 342A. The sampling of side upper leather, C. W. Mann, E. B. Randall, Jr., J. Handel, T. J. Kilduff,

and A. M. Charles. J. Am. Leather Chem. Assoc.

46, No. 3, 248-263 (1951). 354A. Uncle Sam's house of 1,000 wonders, L. J. Briggs. Natl. Geographic Mag. C, No. 6, 755

(Dec. 1951). 1952

362A. A fundamental approach to the establishment

of pH standards, R. G. Bates. Analyst 77, 653

(1952) . 370A. A note on the inversion of matrices by ran- dom walks, W. R. Wasow. Math. Tables and Other

Aids to Computation 6, 78-81 (1952). 407A. Capacities of plumbing stacks, R. S. Wyly. Yearbook of the American Society of Sanitary Engineering XXX, 46-59 (1951). 441A. Electronic fuze research, R. L. Eichberg. Ordnance 36, No. 191, 839 (Mar. -Apr. 1952).

446A. Factors influencing the road wear of tires,

R. D. Stiehler, M. N. Steel, and J. Mandel. Engineering 173, 1-4 (Feb. 1952).

463A. How much should a soil stack carry? R. S. Wyly and H. N. Eaton. Plumbing and Heating Business (1952). 482A. Method for freezing zirconium of common im- purities and for preparing zirconium sulfate and

oxide, W. S. Clabaugh and R. Gilchrist. J. Am. Chem. Soc. 2104 (1952).

517A. Present program of the National Bureau of Standards, E. U. Condon. Sci. Monthly LXXIII,

No. 3, 176 (Sept. 1952).

562A. Recent contributions to the theory of elec- trolyte solubility, R. G. Bates. Chapt. in Seidell and Linke, Suppl. to Seidell's Solubilities (D. Van Nostrand Co., New York, N. Y, 1952) . 538A. Self-siphonage of plumbing fixture traps, J. L. French and H. N. Eaton. Heating and Ventilating, p. 102 (Oct. 1952).

548A. Some thoughts on science in the federal

government, E. U. Condon. Am. Inst. Phys. 5, No. 4, 6 (Apr. 1952).

556A. Studies on the constitution of portland

cement clinker, R. H. Bogue. 3d Intern. Symp. Chemistry of Cement, London, England (Sept. 1952)

.

587A. The need for scientific talent, A. V. Astin.

Sci. Teacher XIX, No. 6, 257 (Nov. 1952).

587B. The notched-disk memory, J. Rabinow. Elec.

Eng. 71, 745-749 (Aug. 1952).

604A. Titrations in nonaquenous solutions, J. A. Riddick, J. S. Fritz, M. M. Davis, E. F. Hillenbrand, Jr., and P. C. Markunas. Anal. Chem. 24, 310 (1952).

274
1953

630A. A non-harmonic Fourier series, J. M. Ham- mersley. Acta Math. 89, 243-260 (1953).

628A. A note on pairs of normal matrices with property L, N. A. Wiegmann. Proc. Am. Math. Soc. 4, No. 1, 35-36 (Feb. 1953).

639A. Acidity and basicity in organic solvents, M. M. Davis. Sci. Counselor 16, 88 (1953). 641A. Adiabatic demagnetization of chromium methalamine alum, D. De Klerk and R. P. Hudson. Phys

.

Rev. 91, No. 2, 278-281 (July 15, 1953).

647A. An electronic thickness gage, A. Brenner and

J. Garcia-Rivera. Plating 40, No. 11, 1238-1234

(Nov. 1953).

649A. An improved cathode ray tube storage system,

E. Thorensen. Proc. Western Joint Computer Conf

.

Los Angeles, Calif., p. 167-173 (1953). 658A. Bibliography on nonparametric statistics and related topics, I. R. Savage. J. Am. Stat. Assoc.

48, 844-906 (Dec. 1953).

658B. Buffering between input -output and the computer, A. L. Leiner. Review of Input and Output Equipment Used in Computing Systems, Joint AIEE- IRE-ACM Computer Conf .

, S-53 (Mar. 1953).

676A. Danger from the sky, J. A. Dickinson. Natl. Safety News 67, No. 5, 20 (1953).

682A. Density and expansivity of alkali borates

and density characteristics of some other binary

classes, L. Shartsis, W. Capps, and S. Spinner.

J. Am. Ceram. Soc. 36, No. 3, 35 (Feb. 1853).

691A. Dynamic circuit techniques used in SEAC and

DYSEAC, R. D. Elbourn and R. P. Witt. IRE Trans. Electronic Computers EC-2, No. 1, 2-9 (Mar. 1953); Proc. IRE 41, No. 10, 1380-1387 (Oct. 1953).

692A. Dynamic stress-strain curves for mild steel using the tangent modulus procedure, W. R. Campbell. J. Wash. Acad. Sci. 43, No. 4, 102-103

(Apr. 1953).

721A. Formulation of isotopic splitting in terms

of the reciprocal kinetic energy matrix, W. J. Taylor. J. Chem. Phys. 21, No. 4, 763-764

(Apr. 1953).

727A. Heat capacity of gaseous perf lourocyclobutane, J. F. Masi. J. Am. Chem. Soc. 78, 5082

(Oct. 1953).

744A. International proposals for testing plastics,

G. M. Kline. Standardization, p. 361 (Dec. 1953).

745A. Investigation of gases evolved during firing

of vitreous coatings on steel, D. G. Moore and

M. A. Mason. Natl. Advisory Comm. Aeronaut. Tech. Note 2865 (Jan. 1953)

.

745B. Investigation of sandwich construction under

lateral and axial loads, W. D. Kroll, L. Mordfin,

and W. A. Garland. Natl. Advisory Comm. Aeronaut. Tech. Ncte 3090 (1953). 775A. Note on the heat of vaporization of chloro- trifluoroethylene (C2F3C1) , G. T. Furukawa, R. E. McCoskey, and M. L. Reilly. J. Am. Chem. Soc. 75, 4339 (1953). 776A. Note on the resonance method of measuring

the ratio of the specific heat of a gas Cp/Cv, H. W. Woolley. Can. J. Phys. 31, 604 (1953). 787A. On the optimal character of the (s,S) policy

in inventory theory, A. Dvoretzky and P. Erdos

.

Econometrica 21, 586-596 (1953). 788A. On the propagation of a disturbance through

a viscous liquid flowing in a distensible tube

of appreciable mass, R. B. Jacobs. Bull. Math. Biophys. 15, 395-409 (1953).

811A. Reaction of carbon monoxide with atomic

oxygen, H. P. Broida and A. G. Gaydon. Trans. Faraday Soc. 49, 1190 (1953). 842A. Summary of AIEE-IRE-ACM conference, A. V. Astin, Proc. Eastern Joint Computer Conf. p. 116

(AIEE, New York, N. Y .

, Dec. 8-10, 1953).

851A. The assumptions underlying the analysis of variance, C. Eisenhart, (Spanish Translation by Jose Otaduy) . Book, Sobre el Analisis de la Variancia, pp. 1-24 (Comision de Educacion Esta- distica del Instituto Interamerican de Estadistica, Rosario, Argentina, 1953).

857A. The effect of a helium atmosphere on the Beckman infrared spectrophotometer, W. R. Brode,

J. H. Gould, and G. M. Wyman. J. Opt. Soc. Am.

43, No. 11, 969-970 (Nov. 1953).

871. The National Bureau of Standards , A. V. Astin., Phys. Today 6, No. 6, 12-13 (June 1953).

874A. The notched-disk memory, J. Rabinow. Am. Inst. Elec. Eng. 71, No. 8, 745 (Aug. 1953).

893A. The vibrational spectrum of tetrachlorodiborine, M. J. Linevsky, E. R. Shull, D. E. Mann, and T. Wartick. J. Am. Chem. Soc. 75, 3287

(1953) . 898A. Transcapillary exchange rates of deuterium

oxide and thiocyanate in the forearm of man, E. Fires, T. F. Higgins, and H. J. Morowitz. J. Appl. Physicol. 5, 526 (1953). 903A. Units for measuring variations in measurements, W. J. Youden. Metal Progress 64, 91-96

(Sept. 1953).

903B. Use of a vacuum spectrograph for combustion

study, H. P. Broida and W. R. S. Garton. Fuel

32, 519-520 (Sept. 1953).

911A. X-ray scattering study of tooth structure,

A. S. Posner. N. Y. J. Dentistry XXIII, No. 8-9, 303-304 (Aug. -Sept. 1953). 1954

929A. A radioisotope study of the nickel dip, J. C. Richmond, H. B. Kirkpatrick, and W. N. Harrison. Finish 11, No. 5, 49 (May 1954).

941A. Acoustic radiation pressure on a circular

disk, H. Levine. Wave Motion and Vibration

Theory, Proc. 5th Symp. Appl. Math. American

Mathematical Society, p. 63-69 (McGraw-Hill Book

Co., Inc., New York, N. Y., 1954).

946A. An adiabatic apparatus for the study of self-heating of poorly conducting materials, W.

H. Raskin and A. F. Robertson. Rev. Sci. Instr.

25, No. 6, 541-544 (June 1954).

951A. An investigation of the effects of the nickel

dip on the adherence of ground coat enamels to steel, D. G. Moore, J. W. Pitts, and W. N. Harrison. Finish 11, No. 5, 49 (May 1954).

954A. Approximate method for rapid Loran computation, M. Abramowitz, D. H. Call, and J. C. Mathews. Navigation 4, 24-27 (1954). 962A. Lyman J. Briggs : Recognition of his eightieth birthday, May 7, 1954, W. R. Brode. Sci. Monthly LXXVIII, No. 5, 269 (May 1954).

983A. Crystallization kinetics in high polymers.

I. Bulk polymers, L. Mandelkern and F. A. Quinn,

Jr. J. Appl. Phys. 25, No. 7, 830 (July 1954).

988A. Determination of thermodynamic acidity

constants, R. G. Bates and G. Schwarzenbach. Chimica 8, 95 (1954). 994A. Diffraction of waves by a wedge, F. Oberhettinger. Comm. Pure Appl. Math. 7, 551-563

(1954) .

2 75
998A. Effects of mechanical preparation and pH on

the strength of glass-fiber paper, M. J. 0' Lear

R. B. Hobbs, J. K. Missimer, and J. J. Erving. Tappi 37, No. 10, 446 (Oct. 1954). 1010A. Electrometric pH determinations, R. G. Bates. (Book, John Wiley and Sons, Inc., New

York, N. Y., 1954). 1011A. Electronic flowmeter system, H. P. Kalmus

.

Rev. Sci. Instr. 25, No. 3, 201-206 (Mar. 1954)

1011B. Electronic fringe interpolator for an opti

cal interferometer, R. D. Huntoon, A. Wei: W. Smith. J. Opt. Soc. Am. 44, No. 4, 264-269

(Apr. 1954).

3 + 3 - 1012A. Emission des bandes interdites (I I ) de 02

), H. P. Broida and A. G. Gaydon.

U g

J. Phys. Radium 15, 385-387 (May 1954).

1040A. In-line interferometer, J. B. Saunders. J. Opt. Soc. Am. 44, No. 3, 241-242 (Mar. 1954). 1041B. Some factors affecting the adherence of ceramic coatings to alloys, J. W. Pitts and D.

G. Moore. Finish 11, No. 5, 50 (May 1954).

1066A. Measurement of the effect of dilution upon

pH, R. G. Bates. Anal. Chem. 26, 871 (1954). 1081A. Normal matrices in some problems in alge- braic number theory, 0. Taussky. Proc. Intern.

Math. Congress (Amsterdam, The Netherlands,

Sept. 1954).

1099A. On spectra of second-order differential

operators, D. Ray. Trans. Am. Math. Soc. 77, 299-321 (1954)

.

1130A. Research leads to more practical codes, G.

N. Thompson. Building Materials Digest, p. 358

(Oct, 154). 1158A. System design of the SEAC and DYSEAC, A. L. Leiner, W. A. Notz, J. L. Smith, and A. Weinberger. IRE Trans. Electronic Computers EC-3,

No. 2, 8-23 (June 1954)

.

1159A. System organization of the DYSEAC, A. L. Leiner and S. N. Alexander. IRE Trans. Electronic Computers EC-3, No. 1, 1-10 (Mar. 1954). 1159B. System specifications for the DYSEAC, A. L. Leiner. J. Assoc. Computing Mach. 1, No. 2, 57-81 (Apr. 1954).

1169A. Tests of bonded and riveted sheet-stringer

panels, L. Mordfin and I. E. Wilks. Natl. Advisory Comm. Aeronaut. Tech. Note 3215 (1954). 1184A. The \ 4050 group of cometary spectra in the acetylene-oxygen flame, N. H. Kiess and A. M. Bass. J. Chem. Phys. 22, No. 3, 569 (Mar. 1954). 1955

1240A. A proof of Hilbert's Nullstellenstaz, T. S. Motzkin. Math. Z. 63, 341-344 (1955). 1251A. Achievements and prospects in auroral and airglow research. S. Chapman. Alrglow and Aurorae (Armstrong and Dalgarno, Belfast, Ireland, Sept. 1955). 1267A. Applications of the Fourier integral in physical science, C. H. Page. IRE Trans. Circuit

Theory CT-2, No. 3, 231-237 (Sept. 1955).

1267B. Asymptotic lower bounds for the fundamental frequency of convex membranes, G. E. Forsythe. Pacific J. Math. 5, Suppl . 1, 691-702 (1955). 1281A. Capacities of drains and stacks in plumbing

system installations, R. S. Wyly. Master Plumber

and Heating Contractor 24, No. 12, 19 (Dec. 1954);

25, No. 1, 13 (1955); 25, No. 2, 25 (Feb. 1955).

1291A. Composition, properties and behavior of ball

pens and inks, W. Souder. J. Criminal Law, Criminology and Police Sci. 45, No. 6, 743 (Mar. -Apr. 1955).

1310A. Determination of sinusoidal accelerations at peak levels near that of gravity by "chatter"

methods, C. W. Kissinger. 1st Intern. Instrument Congress and Exposition of the Instrument Society

of America, Sept. 13-23, 1954 (Phila., Pa.), Paper 54-40-1 (Mar. 1955). 1311A. Diode amplifier, A. W. Holt, Radio-Electronic Engineering, p. 18 (Jan. 1955). 1312A. Discovery and encouragement of science talent, A. T. McPherson. J. Wash. Acad. Sci. 45, No.

5, 162-164 (May 1955). 1329A. Effects of varying the output of a mechanical left ventricle on the circulation in the dog,

E. D. Freis, H. P. Broida, C. A. Hufnagel, and

J. C. Rose. Am. J. Physiol. 182, No. 1, 191

(July 1955). 1404A. Mechanical failures of metals in service,

J. A. Bennett and G. W. Quick. Design News

(Apr. 15, 1955). 1411A. Narrow-band spectra of low-energy X-radiation, M. Ehrlich. Radiation Research 3, No. 2, 223 (Oct. 1955). 1419A. Note on persistent meteor trails, S. Chapman. Airglow and Aurorae (Armstrong and Delgarno, Belfast, Ireland, Sept. 1955). 1421A. Obstacle gain measurements over Pikes Peak

at 60 to 1,046 Mc, R. S. Kirby, H. T. Dougherty,

and P. L. McQuate. Proc. IRE 43, No. 10, 1467

(Oct. 1955).

1430A. On the coveregence of asymptotic solutions

of linear differential equations, R. M. Redheffer

and W. Wasow. Pacific J. Math. 5, Suppl. 1, 817-

834 (1955). 143 5A. One ten-millionth of an inch, I. C. Gardner.

Am. Ordnance Assoc. 39, No. 210, 1 (May-June

1955)

.

1484A. Self-curing resins for repairing dentures:

some physical properties, J. W. Stanford, C. L. Burns, and G. C. Paf f enbarger . J. Am. Dental

Assoc. 51, 307-315 (Sept. 1955). 1486A. Simple derivation of the Boltzmann-Ehrenfest adiabatic principle, M. Greenspan. J. Acoust.

Soc. Am. 27, No. 1, 34 (1955). 1491A. Some applications of the monthly median re- fractivity gradient in tropospheric propagation,

B. R. Bean and F. M. Meany. Proc. IRE 54, No.

10, 1419-1431 (Oct. 1955). 1956

1606A. A theory of long-duration meteor-echoes based on atmospheric turbulence with experimental

confirmation. H. G. Booker and R. Cohen. J. Geophys. Research 61, No. 4, 707-733 (Dec. 1956). 1621A. An extension of a theorem of Dantzig, C. B. Tompkins. In Papers on Linear Inequalities and Related Systems, Annals of Math. Studies, p. 247-

254 (Princeton University Press, Princeton, N. J., 1956)

.

1660A. Contributions of government and private

agencies to national standards, E. C. Crittenden.

Book, National Stations in a Modern Economy, Chapt. 4, p. 31 (Harper and Bros., New York, N. Y., 1956).

276
1665A. E. C. Crittenden, Physical standards expert,

W. R. Brode. Science 124, No. 3215, 255-256 (Aug.

10, 1956).

1697A. Electrometric determination of pH, R. G. Bates. Section in Lange's Handb. of Chemistry,

9th Ed., p. 945-950 (Handbook Publ., Sandusky,

Ohio, 1956).

1732A. How strong must a building be? G. N. Thompson. Mag. of Standards 27, No. 3, 68-71 (Mar. 1956)

.

1741A. Instrumentation in scientific research, A.

V. Astin and W. A. Wildhack. ISA J. 3, 1-5 (Oct. 1956)

.

1759A. Long helical spring behavior under fluctuating load, C. L. Staugaitis and H. C. Burnett. Product Eng. F9 (1956). 1771A. Measuring velocity of underwater sound, M. Greenspan and C. E. Tscheigg. Signal, p. 40

(Jan. -Feb. 1956). 1782A. Neighbor sets for random walks and difference equations, T. S. Motzkin. Proc. Symp. Monte Carlo Methods, Gainesville, Fla., 1954, p. 47-51

(John Wiley & Sons, New York, N. Y. , 1956).

1847A. Relaxation oscillator using a gated beam

tube, C. E. Tschiegg. Rev. Sci. Instr. 27, No.

12, 1085-1086 (Dec. 1956). 1865A. Session on logical design, A. L. Leiner.

Proc. Inst. Elec. Engrs. (London, England), 103,

No. 1, Pt. B, Suppl., 123-124 (Apr. 1956).

1866A. Significance of the National Bureau of Standards in industrial progress, A. V. Astin. Book, National Standards in Modern Economy, Chapt. 6, p. 49 (Harper and Bros., New York, N. Y. 1956).

1978A. Zur ausseren Randbedingung Bei den Gren- szchichtgleichungen, W. Rheinboldt. Sonderdruck

aus der SaMM (Akademie-Verlag) , 36, No. 3-4

Mar. -Apr. 1956).

1978B. Zur Berechnung stationarer Grenzschichten

Bei kontinuierlicher Absaugung mit unstetig ver- anderlicher Absaugegeschwindigkeit , W. Rheinboldt. J. Rational Mech. Anal. 5, No. 3, 539-

604 (May 1956). 1957

2175A. Letter to Editor, J. M. Watts. J. Geophys

.

Research 62, No. 3, 484 (Sept. 1958). 2197A. Methods for evaluation of rotating diamondabrasive dental instruments, J. L. Hartley, D. C. Hudson, W. T. Sweeney, and G. Dickson. J. Am. Dental Assoc. 54, 637-644 (May 1957). 2228A. On the domain of regularity of generalized

axially symmetric potentials, P. Henrici. Proc.

Am. Math. Soc. 8, 29-31 (1957). 2264A. Progress on international standards, W. D. Appel. Daily News Record, p. 36 (Oct. 10,1957).

2278A. Random numbers aren't nonsense, W. J. Youden.

Ind. and Eng. Chem. 49, 89A (Oct. 1957).

2301A. Some developments in dental research during

the last 25 years, G. C. Paf f enbarger . Med. Digest of India, p. 351 (1957). 2302A. Some experiments in comparing the resistance

of enamels to corrosion by alkaline solutions,

H. B. Kirkpatrick, E. L. McGandy, and J. C. Richmond. J. Am. Ceram. Soc. 40, No. 11, 389-395

(Nov. 1957). 2348A. The creep of structural joints, L. Mordfin.

Proc. Florida Conf. on High-Speed Aerodynamics

and Structures, U.S. Air Force Air Research and Development Command Tech. Rept. 1, 57-46 (1957). 2371A. The mechanical and electrical properties of polymers: an elementary molecular approach, J. D. Hoffman. IRE Trans. Component Parts CP-4, No. 2, 42-69 (June 1957)

.

2374A. The nondeviative absorption of high-frequency radio waves in auroral latitudes, S. Chapman and C. G. Little. J. Atmospheric and Terrest. Phys. 10, 20-31 (Jan. 1957). 2379A. The relative intensities of fluorescence

and phosphorescence in biacetyl vapor, H. Okabe

and W. A. Noyes, Jr. J. Am. Chem. Soc. 79, 801

(1957) . 2394A. Thermodynamic properties of highly ionized

air, J. Hilsenrath, M. S. Green, and C. W. Beckett. Headquarters Air Force Special Weapons

Center, Air Research and Development Command, Kirtland Weapons Center, Air Research and Development Command, Kirtland Air Force Base, New

Mexico, Tech. Report AFSWC-TR-56-35 (Apr. 1957).

2027A. Application of quaternions to the representations of a binary quadratic form as a sum of four squares, G. Pall and 0. Taussky. Proc. Royal Irish Acad. (Dublin, Ireland), 58, Sec. A. No. 3, 23 (1957). 2039A. Burgess, George Kimball, 1874-1932, A bio- graphical memoir, L. J. Briggs and W. R. Brode. Biographical Memoirs XXX, 57-72 (Nat'l. Acad.

Sci., Columbia Univ. Press, New York, N. Y.

,

1957).

2058A. Comments on "airglow", F. E. Roach. Proc. Xllth Gen. Assembly, Intern. Sci. Radio Union, Boulder, Colorado, Aug. 22-Sept. 5, 1957, XI,

Pt. 8, 147 (1957). 2109A. Electronic averaging device for the adherometer, A. G. Roberts and R. S. Pizer. ASTM Bull.

No. 221, 53-38 (Apr. 1957).

2111A. Equatorial region ionospheric scatter re- search by the NBS during IGY, K. L. Bowles and

R. S. Cohen. QST, p. 11-15 (Aug. 1957). 2172A. Ionospheric reflection coefficients at VLF from sferics measurements, A. G. Jean, L. J. Lange, and J. R. Wait. Geofis. Pura Appl . 38, 147-153 (1957).

1958

2522A. Digital techniques in statistical analysis

of experiments, J. M. Cameron. Handbook of Automation, Computation, and Control, ed. by E. M. Grabbe, S. Ramo, D. E. Woolridge, Chapt. 14, Sec. 4, p. 14-48-14-55 (John Wiley and Sons,

Inc., New York, N. Y. , 1958). 2525A. Discussions on pA theoretical study of in- duced electrical polarization, J. R. Wait, R. H. Rische, and H. V. Buttlar. Geophysics XXIII, No.

1, 144-153 (Jan. 1958).

2541A. Electronic digital computers —their use in science and engineering, F. L. Alt. Book, Applied Mathematics and Mechanics IV, 336 (Aca- demic Press, Inc., New York, N. Y., 1958).

2597A. Induction by an oscillating magnetic dipole

over a two layer ground, J. R. Wait. Appl. Sci. Res., Section B. , 7, 73-80 (1958). 2603A. Introductory remarks, F. B. Silsbee. IRE Trans. Instrumentation 1-7, No. 3-4, 211 (Dec. 1958)

.

277
1958

2610A. Light emission from the surface layer of BaTi03 , SrTi03 and associated compounds, G. G. Harman. Phys. Rev. Ill, 27-30 (July 1, 1958).

2622A. Magnetic amplifiers for digital computers,

E. W. Hogue. Elec. Manufacturing 61, No. 5, 150-

151 (May 1958)

.

2647A. Nonlinear oscillations, H. A. Antosiewicz.

Vol. IV, ed. S. Lefschetz, Ann. Math. Studies

No. 41, p. 141-166 (Princeton University Press, Princeton, N. J., 1958).

2657A. On the bounds of a one-parametric family of matrices, A. M. Ostrowski. J. Reine Angew. Math.

200, 190-199 (1958). 2665A. On the computation of diffraction fields for grazing angles, J. R. Wait and A. M. Conda. Elec- tromagnetic Wave Propagation, p. 661-670 )Proc. Intern. Conf. Propagation of Radio Waves, Liege, Belgium, 1958).

2669. Soviet electrons in world markets, A. V. Astin. Electronic Week 3, No. 4, 10 (Apr. 1958).

2697A. Preliminary assessment of the IGY, A. H. Shapley. Proc. Natl. Electronics Conf., p. 1 (Oct. 13, 1958).

2700A. Problems in life testing: factorial experiments, M. Zelen. Trans. 13th Midwest Quality

Control Conf., Kansas City, Mo., p. 21-23 (Nov. 1958)

.

2730A. Reply to criticisms concerning Ireland con- tained in article "Basic Research in Europe", D. M. Gates. Science 128, No. 3318, 1-9 (Aug. 1, 1958)

.

2776A. Standards for neutron flux measurement and neutron dosimetry, R. S. Caswell, J. Chin, and

E . R. Mosburg, Jr. Proc. 2d Intern. Conf. on Peaceful Uses of Atomic Energy, United Nations

(Geneva, Switzerland), 21, 92 (1958). 2800A. Temporal world wide variations of sporadic

E, E. K. Smith. AGARDograph 34, 1 (Sept. 1958). 2802A. The accurate determination of molecular

weights of macromolecules , D. M. Mclntyre. Am. Soc. Testing Materials Spec. Tech. Publ. 247, 207 (1958). 2838A. The wavelength definition of the meter, I. C. Gardner. Am. Assoc. Advancement Sci., Eng.

Div., Washington, D. C, Dec. 29, 1958.

278
1959

3116. A direct-reading viscometer, M. R. Shafer. Instruments and Control Systems 32, No. 7, 1004

(1959). 3117. A discussion of Federal Specifications GG-X620 and F-310 for dental X-ray apparatus and dental radiographic film, G. C. Paf f enbarger , A.

F. Forziati, and M. A. Kumpula. J. Am. Dental

Assoc. 59, 472 (1959). 3117A. A further extension of Cayley's parameterization, M. Pearl. Can. J. Math. 11, No. 11, 48-50 (1959). 3118. A new aid for the rapid determination of ab- sorption corrections by Albrecht's method, D. K. Smith. Acta Cryst. 12, Pt. 6, 479 (1959). 3119. A nomenclature for conformations of pyranoid

sugars and derivatives, H. S. Isbell and R. S. Tipson. Science 130, No. 3378, 793 (1959). 3120. A nomograph for selecting light balancing

filters for camera exposure of color films, C.

S. McCamy. Photographic Sci. and Engr. 3, No. 6, 302 (1959)

.

3121. A note on algebras, A. J. Goldman. Am. Math.

Mo. 66, 795 (1959). 3122. A note on the scattering of electrons from atomic hydrogen, A. Temkin. Phys. Rev. 116, No.

2, 358 (1959). 3122A. A phenomenological theory of overvoltage

for metallic particles, J. R. Wait. Book, Over- voltage Research and Geophysical Applications,

Ed. J. R. Wait, Chapt. 3, p. 22 (Pergamon Press

Inc., New York, N. Y. , 1959).

3123. A porcelain reference electrode conductive

to sodium ions for use in molten salt systems,

R. J. Labrie and V. A. Lamb. J. Electrochem.

Soc. 106, No. 10, 895 (1959). 3123A. A quantitative formulation of Sylvester's

law of inertia, A. M. Ostrowski. Natl. Acad.

Sci. Proc. 45, No. 5, 740-744 (May 1959).

3124. A time delay to amplitude converter, Z. Bay

and F. McLernon. Proc. 2d Symp. Advances in Fast-Pulse Technique for Nuclear Counting UCRL8706, 55-58 (February 1959)

.

3125. A visual distinctness-of-image gloss meter,

J. C. Richmond. Petroleum Enamel Inst. Forum 21,

54 (1959). 3126. Absolute photometry of the aurora. I. The

ionized molecular nitrogen emission and the oxygen green line in the dark atmosphere, M. H. Rees. J. Atmospheric and Terrest. Phys. 14, 325

(1959) . 3127. Absolute photometiy of the aurora. II. Mo- lecular nitrogen emission in the sunlit atmosphere, M. H. Rees. J. Atmospheric and Terrest.

Phys. 14, 338 (1959). 3128. Absorption of radiation by a cylindrical sample of a strong absorber, P. H. Fang and I. A. Stegun. J. Chem. Phys. 31, 267 (1959). 3129. Accuracy and precision: Evaluation and inter- pretation of analytical data, W. J. Youden. Chapter 3. Treatise on Analytical Chemistry,

Part I. Theory and Practice, Volume 1, Section

A. Analytical Chemistry: Its Objectives, Functions and Limitations, p. 47 (The Interscience

Encyclopedia, Inc., New York, N. Y., 1959).

3130. An additional lunar influence on equatorial

Es at Huancayo, R. W. Knecht. J. Atmospheric

and Terrest. Phys. Research Note 14, 348, (1959).

3131. An indoor tester for measuring tire treadwear, G. G. Richey, J. Mandel, and R. D. Stiehler.

Proc. Intern. Rubber Conf., Am. Chem. Soc, No- vember 8-13, 1959, p. 104 (Washington, D. C.

,

1959)

.

3132. An inexpensive f/6 grating littrow spectrograph, J. P. Fallona and R. W. Nicholls. J. Opt. Soc. Am. 49, 1133 (1959). 3133. An intermittent-action camera with absolute

time calibration, G. Hefley, R. H. Doherty,

and E. L. Berger. IRE Wescon Conv. Record 3, Pt. 129 (1959). 3134. An X-ray crystallographic study of Schroeckingerite and its dehydration product,

D. K. Smith. Am. Mineralogist 44, 1020 (1959). 3135. Analog-digital differential analyzer, H. K. Skramstad. Proc. Eastern Joint Computer Conf.

p. 94 (Boston, Massachusetts, 1959). 3136. Analysis of liquid sugar, E. J. McDonald.

Proc. 5th Tech. Session on Bone Char 1957, p. 77 (Bone Char Research Project Inc., Charlestown, Massachusetts, 1959). 3137. Analysis of photonuclear cross section, A.

S. Penfold and J. E. Leiss. Phys. Rev. 114, No.

5, 1332 (1959). 3138. Analytical chemistry of polymers. Part I. Analysis of monomers and polymeric materialsplastics, resins, rubbers, fibers, G. M. Kline.

Book, High Polymer Series, Vol. XII, 666 (Inter- science Publ., Inc., New York, N. Y. , (1959). 3139. Application of the Williams-Landel-Ferry

equation to silicate glasses, A. B. Bestul. Glastech. Ber. 32K, No. VI, (1959). 3140. Applications of the molecular refractivity

in radio meteorology, B. R. Bean and R. M. Gallet. J. Geophys. Research 64, No. 10, 1439-1444 (Oct. 1959).

3141. Argon deposition on a 4.2°K surface, S. N. Foner, F. A. Mauer, and L. H. Bolz. J. Chem.

Phys. 31, No. 2, 546 (1959). 3142. Asphalt shingles and roofing maintenance,

W. C. Cullen, Proc. Conf. on Maintenance and Repair of Building Components, U.S. Air Force, Keesler Field (December 1959)

.

3142A. Assigning quantitative values to qualitative factors in the Naval Electronics Problem,

R. J. Auman and J. B. Kruskal. Naval Research

Logistics Quart. 6, 1-16 (1959). 3143. Atomic electron affinities, F. Rohrlich. Nature 183, 244 (1959)

.

3144. Atomic energy levels and spectra of neutral

and singly ionized phosphorus, W. C. Martin. J. Opt. Soc. Am. 49, No. 11, 1971 (1959). 3145. Atomic weights, E. Wichers. Chapter 6 of Treatise on Analytical Chemistry, Part I. Theory

and Practice, Volume 1. Analytical Chemistry:

Its Objectives, Functions and Limitations, p. 161 (The Interscience Encyclopedia, Inc., New

York, N. Y., 1959).

3146. Atoms and free radicals by 8 irradiations

at 4.2°K, L. A. Wall, D. W. Brown, and R. E. Florin. J. Phys. Chem. 63, 1762 (1959). 3147. Attenuation of scattered cesium-137 gamma

rays, F. S. Frantz, Jr., and H. 0. Wyckoff. Radiology 73, No. 2, 263 (1959).

279
3148. Available heat sinks for protected underground installations, B. A. Peavy, Jr. Proc. 2d Protective Construction Symp. (Deep Underground

Const.) II, 505 (The Rand Corp., Santa Monica, California, 1959). 3149. Background and objectives of the U.S. Standard for the colors of signal lights, F. C. Breckenridge . Highway Research Board Bull. Night Visibility Publ. 686, No. 226, 7-13 (January

1959)

.

3150. Unassigned.

3151. Basic factors in glass-resin systems, R. R. Stromberg, W. M. Lee, A. R. Quasius, S. B. Newman, and F. W. Reinhart. Proc. SPI Reinforced

Plastics Div. 14th Annual Tech. Conf. 16-A, 1 (1959)

.

3151A. Basic research in government laboratories,

A. V. Astin. Symp. on Basic Research (Am. Assoc. Advancement of Sci., Washington, D. C), p. 143-157 (1959). 3152. Bending and stretching of corrugated diaphragms, R. F. Dressier. ASME Trans. 81D, No. 4, 651 (1959). 3152A. Boolean matrix equations in digital circuit

design, R. S. Ledley. IRE Trans. Electronic Computers EC-8, No. 2, 131-139 (June 1959). 3153. Branched-chain higher sugars. III. A 4-c-(hydroxymethyl) -pentose, R. Schaffer. J. Am. Chem. Soc. 81, 5452 (1959). 3154. Bremsstrahlung cross-section formulas and related data, H. W. Koch and J. W. Motz. Rev. Modern Phys . 31, No. 4, 920 (1959). 3155. Calculated patterns of slotted ellipticcylinder antennae, J. R. Wait and W. E. Mientka.

Appl. Sci. Research B, 7, 449 (1959). 3156. Cavity resonators for dielectric spectroscopy

of compressed gases, H. E. Bussey and G. Birnbaum. Rev. Sci. Instr. 30, No. 9, 800-804 (Sept. 1959)

.

3157. Ceramic wafer tube, C. P. Marsden. Electronics 32, No. 94 (1959). 3158. Changes in emittance during heating in vacuum, J. C. Richmond. 5th Ordnance Materials Conf. Report No. MET 597, p. 164 (1959). 3159. Color measurement and specification, H. K. Hammond, III. Paint, Oil and Chem. Rev. 122, No.

14, 6 (1959). 3160. Comments on revision of Association of American Railroads signal section specification 69-59, Signal Glasses, F. C. Breckenridge. Proc. 60th Annual Meeting of Association American Railroads

Signal Section, p. 270 (Oct. 1959).

3161. Comparative metabolism of Ca and Sr in the

rat, R. C. Likins, A. S. Posner, M. L. Kunde

,

and D. L. Craven. Archives of Biochem. and Biophys. 83, 472 (1959). 3162. Comparison of column decolorization experiments with theory, W. V. Loebenstein. Proc. 5th Tech. Session on Bone Char 1957, p. 253 (Bone Char Research Project Inc., Charlestown, Massachusetts, 1959).

3163. Concept and determination of pH, R. G. Bates. Chapter 10. Treatise on Analytical Chemistry,

Pt. 1. Theory and Practice, Vol. 1, Sec. B. Application of Chemical Principles, p. 361 (The Interscience Encyclopedia Inc., New York, N. Y., 1959)

.

3164. Concurrently operating computer systems, A.

L. Leiner, W. A. Notz, J. L. Smith, and R. B. Marimont. Proc. UNESCO Intern. Conf. on Informa- tion Processing, p. 353 (Paris, Munich, London,

1959)

.

3165. Unassigned.

3166. Construction and application of a class of modular functions, II., M. Newman. Proc. London

Math. Soc. 9, 373 (1959). 3167. Contribution to the theory of Brownian

motion, R. W. Zwanzig. Phys. Fluids 2, No. 1, 12

(1959) . 3168. Corrosion of type 310 stainless steel in fuel ash contaminants, H. L. Logan. Corrosion

15, 4435 (1959). 3169. Creep behavior of transparent plastics at elevated temperatures, F. L. McCrackin and C. F. Bersch. SPE J. 15, 791 (1959). 3169A. Criteria from the transient decay curves,

J. R. Wait. Book, Overvoltage Research and Geo- physical Applications, Ed. J. R. Wait, Chapt.

6a, p. 71 (Pergamon Press Inc., New York, N. Y., 1959)

.

3170. Cryogenic engineering of hydrogen bubble

chambers, B. W. Birmingham, D. B. Chelton, D. B. Mann, and H. P. Hernandez. ASTM Bull. No. 240, 34 (TP164) (Sept. 1959).

3171. Cryogenic insulation, R. H. Kropschot. Am. Soc. Heating, Refrig. and Air-Conditioning Engrs

.

1, No. 9, 48 (1959). 3171A. Cryogenics, R. J. Corruccini, V. J. Johnson,

G. E. Mcintosh, and R. B. Scott. ASRE Data Book, Refrigeration Applications, Ed. by V. J. Johnson,

1, No. 1, Chapt. 45, 45-01-45-22 (Am. Soc. Refrig. Engrs., New York, N. Y. , 1959).

3172. Data processing the U.S. Air Force—U.S. Navy —National Aeronautics and Space Administration —statistical loads program, J. H. Wright.

Proc. WADC Symp. on Fatigue of Aircraft Structures, August 1959, Dayton, Ohio, TR 59- 507, p. 479 (1959). 3173. Unassigned.

3174. Denture reliners —direct, hard, self curing

resin, G. M. Brauer, E. E. White, Jr., C. L. Burnes, and J. B. Woelfel. J. Am. Dental Assoc.

59, 270 (1959). 3175. Dependence of mechanical strength of brittle polycrystalline specimens on porosity and grain

size, F. P. Knudsen. J. Am. Ceram. Soc. 42, No.

8, 376 (1959). 3176. Design of free-air ionization chambers for

the soft X-ray region (20-100 kv) , V. H. Ritz. Radiology 73, No. 6, 911 (1959). 3177. Determination of starch in paper. A comparison of the TAPPI, enzymatic, and colorimetric

methods, J. L. Harvey, B. W. Forshee, and D. G. Fletcher. TAPPI 42, No. 11, 878 (1959). 3178. Determination of viscosity, J. F. Swindells,

R. Ullman, and H. Mark. Book, Physical Methods

of Organic Chemistry, Chapter XII, Vol. 1, p. 689

689 (Interscience Publ. Inc., New York, N. Y.

,

1959)

.

3179. Development of a new test for the abrasion

hardness of bone char, F. G. Carpenter. Proc. 5th Tech. Session on Bone Char 1957, p. 99 (Bone Char Research Project Inc., Charlestown, Mass.,

1959)

.

280
1959

3180. Diffusion coefficient of dodecyltr imethyl- ammonium chloride in aqueous solutions at 23°,

R. A. Parker and S. P. Wasik. J. Phys . Chem. 63, 1921 (1959)

.

3181. Digital electronic computers in biomedical

science, R. H. Ledley. Science 130, No. 3384, 1225 (1959). 3182. Digital recording of electrocardiographic

data for analysis by a digital computer, L. Taback, E. C. Harden, 11. L. Mason, and H. V. Pipberger. IRE Trans. Med. Electronics ME-6, 167

(1959) . 3183. Dimensional changes in systems of fibrous macromolecules : Polyethylene, L. Mandelkern, D.

E. Roberts, A. F. Diorio, and A. S. Posner. J. Am. Chem. Soc . 81, 4148 (1959). 3184. Dimensional changes occurring in artificial

dentures, J. B. Woelfel and G. C. Paf f enbarger

.

Intern. Dental J. 9, 451 (1959). 3185. Dimensional stability of impregnated sole

leather, B. H. Fouguet. J. Am. Leather Chemists

Assoc. 54, No. 10, 544 (1959). 3186. Diode in feedback loop makes stable transistor circuit, G. F. Montgomery. Electronic Design

7, No. 21, 54 (1959). 3186A. Direct measurement of net positive suction

head, R. B. Jacobs,' K. B. Martin, and R. J. Hardy. J. Basic Eng. 81, 147-152 (June 1959).

3187. Direction finding of whistlers, J. M. Watts.

J. Geophys. Research 64, No. 11, 2029 (1959). 3188. Discussion of pattern recognition problems,

R. A. Kirsch. Proc Eastern Joint Computer Conf

.

p. 233 (Boston, Mass., 1959). 3189. Discussion of the papers of Messrs. Satterthwaite and Budne, W. J. Youden. Technometrics

1, No. 2, 157 (1959). 3190. Dynamic stability of frozen radicals. I. Description and application of the model, J. L. Jackson. J. Chem. Phys. 31, 154 (1959). 3191. Dynamic stability of frozen radicals. II. The formal theory of the model, J. L. Jackson.

J. Chem. Phys. 31, No. 3, 722 (1959). 3192. Effect of atomic tests on radio noise, C. A. Samson. Nature Letter 184, 538 (1959). 3192A. Effect of heat-treatment on the constitution

and mechanical properties of some hydrated alu- minous cements, S. J. Schneider. J. Am. Ceramic

Soc. 42, No. 4, 184 (Apr. 1959). 3193. Effect of fluorides on infrared transmittance

of certain silicate glasses, G. W. Cleek and T.

G. Scuderi. J. Am. Ceram. Soc. 42, No. 12, 599

(1959) . 3194. Effect of notch geometry on tensile properties of annealed titanium at 100°, 25°, -78°, and -196°C, G. W. Geil and N. L. Carwile. Am. Soc. Testing Materials Proc. 59, 985 (1959). 3195. Effect of speed on the tensile test of paper,

T. W. Lashof, C. P. Spring, and G. L. Maton. Tappi 42, 718 (1959). 3195A. Effect on spin and speed on the lateral de- flection (curve) of a baseball; and the magnus

effect for smooth spheres, L. J. Briggs. Am. J. Phys. 27, No. 8, 589-596 (Nov. 1959).

3196. Effects of controlled decarbonization on the performance of service synthad, F. W. Schwer, W.

V. Loebenstein, and E. P. Barret. Proc. 5th Tech. Session on Bone Char 1957, p. 145 (Bone Char Re- search Project Inc., Charlestown, Mass., 1959).

3197. Effects of gamma radiation on collagen, J. M. Cassel. J. Am. Leather Chemists Assoc. 54, No. 8, 432 (1959).

3198. Electrode potentials, R. G. Bates. Chapter

9. Treatise on Analytical Chemistry, Pt . 1. Theory and Practice, Vol. 1, Sec. B. Application

of Chemical Principles, p. 319 (The Interscience Encyclopedia Inc., New York, N. Y. 1959).

3199. Electromagnetic radiation from cylindrical

structures, J. R. Wait. (Pergamon Press Inc., New York, N. Y. , 1959)

.

3200. Electron bombardment of solid acetone, E. M. Horl. J. Chem. Phys. 31, No. 2, 564 (1959). 3200A. Electron spin resonance studies of free radicals in irradiated materials, L. A. Wall.

Symp. Materials in Nuclear Application, Am. Soc. Testing Materials Spec. Tech. Publ. 276, 208-223

(1959) . 3201. End plate modification of X-band TE011 cavity

resonators, M. C. Thompson, Jr., F. E. Freethey,

and D. M. Waters. IRE Trans. Microwave Theory and

Tech. MIT-7, 388 (1959). 3202. Energy dissipation in standing waves in rec- tangular basins, G. H. Keulegan. J. Fluid Mech.

6, Pt. 1, 35 (1959). 3203. Ethane carbon-carbon distance obtained from

infrared spectra, H. C. Allen, Jr., and E. K. Plyler. J. Chem. Phys. 31, No. 4, 1062 (1959). 3203A. Etude aux infrarouges de certains col ides condenses a partir de decharges en phase gazeuse,

K. B. Harvey and H. W. Brown. J. Chem. Phys. 56, 745 (1959). 3204. Evacuated powder insulation for low temperatures, M. M. Fulk. Progress in Cryogenics 1, 65 (Heywood and Co., Ltd., London, England, 1959).

3205. Evaluation of chemical analyses on two rocks,

W. J. Youden. Technometrics 1, No. 4, 409 (1959). 3205A. Evaluation of small color differences: 1. Visual observations, J. C. Richmond and W. N. Harrison. Am. Ceram. Soc. Bull. 38, No. 6, 292-

300 (June 1959)

.

3206. Evolution of amplified waves leading to transition in a boundary layer with zero pressure

gradient, P. S. Klebanoff and K. D. Tidstrom. NASA Tech. Note D-195, 1 (Sept. 1959). 3207. Excitation of N2 and 02 by 1/2 and 1 Mev

protons, R. W. Nicholls, E. M. Reeves, and D. A. Bromley. Proc. Phys. Soc. 74, 87 (1959). 3208. Exploratory study, by low temperature X-ray diffraction techniques, of diborane and the products of a microwave discharge in diborane, L.

H. Bolz, F. A. Mauer, and H. S. Peiser. J. Chem.

Phys. 31, No. 4, 1005 (1959). 3209. Factorial experiments in life testing, M. Zelen. Technometrics 1, No. 3, 269 (1959). 3210. Factors affecting modulation techniques for VHF scatter systems, J. W. Koch. IRE Trans. Commun. Systems CS-7, No. 2, 77 (1959). 3211. Fire research at the National Bureau of Standards, A. F. Robertson. Fire Research Abstracts and Reviews I, No. 4, 159 (1959). 3212. Flare-associated bursts at 18 MC/S, C. S. Warwick and J. W. Warwick. Paris Symp. on Radio Astronomy (IAU Symp. No. 9 and URSI Symp. No. 1),

p. 203 (1959). 3213. Flat roofs and heat insulation moisture effects, H. R. Snoke. Proc. Fall Conf. Bldg. Re- search Institute (Washington, D. C, 1959).

3213A. Formation of polymer crystals with folded

chains from dilute solutions, J. I. Lauritzen,

Jr., and J. D. Hoffman. J. Chem. Phys. 31, No. 6, 1680-1681 (Dec. 1959).

281
1959

. polymers, I. Wolock,

:ies. Book, Fracture, New York, N.

3214. Fracture phei

S. B. Newman, and J. A. Kie

p. 250 (John Wiley and Son: Y., 1959).

3215. Free radical chemistry, J. W. Moyer and A. M. Bass. Chem. and Eng. News 37, No. 24, 51 (1959). 321 5A. From formulas to computer oriented language,

J. Wegstein. Communications ACM 2, 6-8 (1959). 3216. Gaseous heat conduction at low pressures and temperatures, R. J. Corruccini. Vacuum 7 and 8, 19 (1959). 3217. Gaussian quadrature of nonpolynomial functions with indefinite or complex weight functional; multiple sums, integrals, and derivatives; fractional transformations, P. F. Wacker.

Am. Math. Soc. Notices 6, 860 (1959). 3218. Geomagnetic activity following large solar

flares, C. S. Warwick and R. T. Hansen. J. At- mospheric and Terrest. Phys. 14, 287 (1959). 3219. Geomagnetic and ionospheric phenomena asso- ciated with nuclear explosions, S. Matsushita. Nature 184, BA33 (1959). 3220. Geometrical anisotropy of magnetic materials

in wave-guides and cavities, L. A. Steinert. J. Appl. Phys. 30, No. 7, 1109 (1959). 3221. Glass research at the National Bureau of Standards, C. H. Hahner. The Glass Ind. 40, No.

11, 588 (1959). 3222. Glow discharge spectra of copper and indium

above aqueous solutions, D. E. Couch and A. Brenner. J. Electrochem. Soc. Tech. Notes 106, 628 (1959). 3223. Graphical diagnosis of interlaboratory test results, W. J. Youden. Indust. Quality Control

15, 24-28 (1959); Middle Atlantic Conf. Trans.,

Am. Soc. Quality Control, p. 196-206 (1959). 3224. Graphical evaluation of analytical results,

W. J. Youden. Conf. on Chemical Control Problems, National Plant Food Institute, p. 1 (Washington,

D. C, 1959).

3225. Guiding of electromagnetic waves by uniformly rough surfaces, J. R. Wait. IRE Trans. Ant. Prop. Special Suppl . , AP-7, S154 (1959). 3226. Guiding of electromagnetic waves by uniformly

rough surfaces, Part II, J. Ft . Wait. IRE Trans.

Ant. Prop. AP-7, S163 (1959). 3227. HAYSTAQ system: Past, present and future,

H. R. Koller, E. Marden, and H. Pfeffer. Proc

.

Intern. Conf. on Scientific Information, p. 1143 (Washington, D. C, 1959).

3227A. Hearing by bone conduction, E. L. R. Corliss,

E. L. Smith, and J. O. Magruder, Proc. 3d Intern. Congress on Acoustics, Stuttgart, Germany, p. 53-

56 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1959).

3228. Heat of formation of nitrogen trifluoride

and the N F bond energy, G. T. Armstrong, S. Marantz, and C. F. Coyle. J. Am. Chem. Soc. Comm.

to Editor 81, 3798 (1959). 3229. Heat sink method for measuring the cooling

loads of refrigerated structures, P. R. Achenbach and C. W. Phillips. Proc. 10th Intern. Congress on Refrigeration, August 1959, Copenhagen, Denmark (1959). 3229A. Helping consumers get correct weights and measures, W. S. Bussey. Proc. Fifth Annual Conf. Council on Consumer Information, Wash., D. C,

Apr. 2-4, 1959, p. 32 (Colorado State College,

Greely, Colo., 1959).

3230. Higher oxides of silver, H. E. Swanson. J. Electrochem. Soc. 106, No. 12, 1073 (1959). 3230A. Hyperfine transitions in rubidium 87 vapor,

E. C. Beaty and P. L. Bender. Proc. 13th Annual

Symp. on Frequency Control, 668-675 (May 1959).

3231. Inclusion theorems for congruence subgroups,

M. Newman and I. Reiner. Trans. Am. Math. Soc.

91, No. 3, 369 (1959). 3231A. Incoherent scattering by free electrons as

a technique for studying the ionosphere and ex- osphere: some observations and theoretical con- siderations, K. L. Bowles. P. 223-243 of AGARDograph 42, The Upper Atmosphere Above F2-Maximum. North Atlantic Treaty Organization, Advisory

Group for Aeronautical Research and Development, Avionics Panel. Papers presented at the Symp. of

the Ionospheric Research Comm., Paris, France, May 1959. 3232. Influence of crystallographic orientation on pitting of iron in distilled water, J. Kruger.

J. Electrochem. Soc. 106, No. 8, 736 (1959). 3233. Interfacial properties of polyesters at glass and water surfaces, R. R. Stromberg, W. M. Lee, and A. R. Quasius. SPE J. 15, No. 10, 883

(1959)

.

3234. Interplanetary gas. I. Hydrogen radiation in the night sky, J. C. Brandt' and J. W. Chamberlain. Astrophys. J. 130, 670 (1959). 3235. Interpretation of some features of low-frequency ionograms, J. M. Watt. J. Atmospheric and Terrest. Phys. 15, 73 (1950). 3236. Introductory remarks, A. V. Astin. Proc. 5th Tech. Session on Bone Char 1957, p. 1 (Bone Char Research Project Inc., Charlestown, Mass., 1959).

3237. Invariant and complete stress functions for general continua, C. Truesdell. Arch. Rational

Mech. and Analysis 1, No. 4, 1 (1959). 3238. Investigations of creep behavior of structural joints under cyclic loads and temperatures,

L. Mordfin, N. Halsey, and G. E. Greene. NASA

Tech. Note D-181, p. 37 (1959). 3239. Kinetic equation for a plasma with unsteady

correlations, C. M. Tchen. Phys. Rev. 114, 394

(1959). 3239A. Laboratory investigation of overvoltage, L.

S. Collett, A. A. Brant, W. E. Bell, K. A. Ruddock, H. 0. Siegel, and J. R. Wait. Book, Over- voltage Research and Geophysical Applications,

Ed. J. R. Wait, Chapt. 5, p. 50 (Pergamon Press

Inc., New York, N. Y., 1959).

3240. Large-aperature grating spectrograph utilizing commercial camera components, A. M. Bass

and K. G. Kessler. J. Opt. Soc. Am. 49, No. 12, 1223 (1959). 3241. Linear differential equations of the second

order with a large parameter, F. W. J. Olver.

J. Soc. Indust. Appl. Math. 7, 306 (1959). 3242. Lower bounds for eigenvalues with application to the helium atom, N. W. Bazely.

Natl. Acad. Sci. 45, No. 6, 850 (1959) 3243. Low even configurations in the fir: trum of ruthenium (Ru I), R. E. Trees. 838 (1959). tensile properties

, R. M. McClintock, D. Kropschot. ASTM Bull.

Soc. Am. 49, No 3244. Low-tempe: and four bronz

Gundy, and R. (TP177) (1959). 3245. Low-temperati

per and its dilu

and coldof copper

A. Van

240, 34

J. Hall

transport properties Hoys: Pure copper, i wn, R. L. Powell, H. M. Rode] Phys. Rev. 115, 314 (1959).
1959

1246. Magnetic s the nitrogen 11 tudy of the frozen products from

licrowave discharge, B. J. Fontana,

31, No. 1, 148 (1959). 3247. Magnified and squared VSWR responses for microwave reflection coefficient measurements,

R. W. Beatty. IRE Trans. Microwave Theory and

Tech. MIT-7, No. 3, 351 (1959). 3247A. Maser frequency stability, R. C. Mockler

and J. A. Barnes. Proc. 13th Annual Frequency

Control Symp., p. 583-595 (May 12-14, 1959).

3248. Measurement of ozone in terms of its optica] absorption, R. Stair. Advances in Chem. Series

of the Am. Chem. Soc. No. 21, 269 (1959). 3249. Measurement of the aging of rubber vulcanizates, J. Mandel, F. L. Roth, M. N. Steel, and

R. D. Stiehler. Proc. Intern. Rubber Conf .

,

November 8-13, 1959, p. 221 (Washington, D. C.

,

1959)

.

3250. Measurements made by matching with known

standards, W. J. Youden, W. S. Connor, and N. C, Severe Technometrics 1, No. 3, 101 (1959). 3251. Memorandum on a procedure for obtaining

spectral radiant intensities of tungsten filament lamps, 400-700 m/u, L. E. Barbrow. J. Opt.

Soc. Am. 49, No. 11, 1122 (1959). 3252. Method of cooling head-on photomultipliers

,

G. G. Harman- Rev. Sci. Instr. 30, No. 8, 742

(1959) . 3253. Method of evaluating the clinical effect of warping a denture; and a case report, J. B. Woelfel and G. C. Paf f enbarger . J. Am. Dental

Assoc. 59, 250 (1959). 3254. Microscopical studies of failure in polymer:

S. B. Newman. Am. Soc. Testing Materials Spec.

Tech. Publ. No. 257, p. 132 (1959). 3255. Microwave absorption in the trimethylaminetrimethylboron additioi

R. W. Taft, Jr. , and P

561 (1959). 3256. Microwave reflector Engen and R. W. Beatty Theory and Tech. MIT-7, 3257. Microwave spectrum and internal rotation of l-chloro-2-butyne, V. W. Laurie and D. R. Lide, Jr. Spectrochem Acta 15, 473-476 (1959). 3258. Microwave spectrum and internal rotation of ethyl cyanide, V. W. Laurie. J. Chem. Phys . 31,

No. 6, 1500 (1959). 3259. Microwave spectrum and structure of N2F4,

D. R. Lide, Jr., and D. E. Mann. J. Chem. Phys. Letter 31, 1129 (1959). 3260. Microwave spectrum of trimethylarsine, D. R

Lide, Jr. Spectrochim. Acta 473-476 (1959).

Lide, Jr., Phys. 31,

leter techniques

IRE Trans. 351 (1959)

3261. licrowave Zeeman spectrum of ator Radford and V. W. Hughes. Phys Rev. 1274 (1959) 3262. Model for vibrational relaxation

behind shock waves, R. Herman and R. Phys. of Fluids 2, No. 5, 547 (1959) 3263. Modular forms whose coefficients multiplicative properties, M. Newman

70, 478 (1959). 3264. Negative atom: Rohrlich. J. Chem

3265. New approach 1 bits, J. P. Vinti

8 (1959). 3265A. New uses of microfilm with electronic scanners, a progress report on FOSDIC III Greenough. Proc. Eighth Annual Meeting, N: Microfilm Association, Wash., D. C, Apr.

1959, p. 278 (Annapolis, Md. , 1959).

: ions, H. R. Johnson and F. Phys. 30, 1068 (1959).

1 the theory of satellite or- Phys. Rev. Letters 3, No. 1,

3266. Nonresonant microwave absorption and electric dipole moment of NO in the gaseous state,

A. A. Maryott and S. J. Kryder. J. Chem. Phys.

31, No. 3, 617 (1959). 3266A. Note historique sur les premieres annees de

la microscopie electronique , L. Marton. Extrait

Bull. Acad. Roy Belg. (Classe des Sciences) 5, 119-121 (Mar. 1959). 3267. Note on bivariate linear interpolation for analytic functions, W. Gautschi. Math. Tables

and Other Aids to Computation 13, No. 66, 91 (1959) . 3267A. Note on quiet day vertical cross sections

of the ionosphere along 75° west geographic meridian, J. W. Wright. J. Geophys . Research Letters 64, No. 10, 1631 (1959). 3267B. Nuclear spin relaxation in low-temperature

liquids, I. Oppenheim and M. Bloom. Can. J. Phys.

37, 1324 (Nov. 1959).

3268. Observations of the ionosphere over the South Geographic Pole, R. W. Knecht. J. Geophys. Research 64, No. 9, 1243 (1959). 3269. On a generalization of an inequality of L. V. Kantorovich, W. Greub, and W. Rheinboldt. Proc.

Am. Math. Soc. 10, 407 (1959). 3270. On artificial geomagnetic and ionospheric

atoms associated with high-altitude explosions,

S. Matsushita. J. Geophys. Research 64, No. 9, 1149 (1959). 3270A. On normal and EPR matrices, M. Pearl. Mich.

J. Math. 6, No. 1, 1-5 (1959). 3271. On prediction of system behavior, J. R. Rosenblatt. Proc. New York University-Industry

Conf. on Reliability Theory (Ardsley-on-Hudson

,

New York, June 1958, p. 39 (1959). 3272. On the convergence of Gauss' alternating

procedure in the method of least squares, I. A. Ostrowski. Ann. Math. Pure Appl . (IV), 48, 229 (1959). 3273. On the convergence of the Rayleigh quotient

iteration for the computation of characteristic

roots and vectors: III. Generalized Rayleigh

quotient and characteristic roots with linear elementary divisors; IV. Generalized Rayleigh

quotient for nonlinear elementary divisors; V. Usual Rayleigh quotient for non-Hermitian

matrices and linear elementary divisors; VI. Usual Rayleigh quotient for nonlinear elementary

divisors, A. Ostrowski. Arch. Rat. Mech. Anal.

3, 325 (1959); 3, 472 (1959); 4, 153 (1959). 3274. On the internal resistance of dry cells, a new pulse method, R. J. Brodd. J. Electrochem.

Soc. 106, 471 (1959). 3275. Optical measurements on thin films of con- densed gases at low temperatures, J. Kruger and

W. J. Ambs. Opt. Soc. Am. 49, 1195 (1959). 3276. Oscillatory behavior of magnetic susceptibility and electronic conductivity, A. H. Kahn

and H. P. R. Frederikse. Solid State Phys. 9, 257 (Academic Press Inc., New York, N. Y.

,

1959). 3276A. Oscillatory currents in the ionosphere,

(Abstract), M. L. White. Meeting of American

Astronomical Society, Gainesville, Fla., Dec.

1958. Astronomical J. 64, 56 (Mar. 1959).

3277. Paper test data from pendulum and inertialess testers, R. J. Capot, S. B. Newman, and

J. Mandel. Tappi 42, No. 6, 480 (1959). 3278. Paramagnetic resonance in the free hydroxyl

radical, H. E. Radford. II Nuovo Cimento Series

X, 14, 245 (1959).
1959

3279. Paramagnetic resonance spectra of active

species. Blue material from hydrozoic acid, W.

B. Gager and F. 0. Rice. J. Chem. Phys. Letter

31, No. 2, 564 (1959). 3280. Penetration and diffusion of X-rays, U. Fano,

L. V. Spencer, and M. J. Berger. Encyclopedia of physics 38, No. 2, 660 (1959). 3281. Photoproton cross sections of carbon, S. Penner and J. E. Leiss. Phys. Rev. 114, No. 4, 1101 (1959). 3281A. Physical Research, Part 2, G. C. Paffenbarger and W. Souder. J. Am. Dental Assoc. 58, 97-

101 (June 1959)

.

3282. Poly (tetraf luoroethylene) —A radiation-resistant polymer, L. A. Wall and R. E. Florin. J. Appl. Polymer Sci. Letter to Editor 2, No. 5, 251 (1959). 3283. Power loss and operating temperature of

tires, R. D. Stiehler, N. Steel, G. G. Richey,

J. Mandel, and R. H. Hobbs. Proc. Intern. Rubber

Conf. November 8-13, 1959, Am. Chem. Soc, p. 73 (Washington, D. C. , 1959). 3284. Preface to the surface wave papers, J. R. Wait. IRE Trans. Ant. Prop. Special Suppl., AP-7, S132 (1959). 3285. Principles and methods of sampling, W. W. Walton and J. I. Hoffman. Chapter 4. Treatise on Analytical Chemistry, Part I. Theory and Practice, Volume 1, Section A. Analytical Chemistry:

Its Objectives, Functions and Limitations, p. 67 (The Interscience Encyclopedia, Inc., New York,

N. Y., 1959).

3286. Problems of the experimenter, W. J. Youden.

Natl. Conv. Trans. Am. Soc. Qual. Control p. 41 (1959)

.

3287. Production of embossing plates from texture patterns by electroforming methods, J. P. Young

and V. A. Lamb. Plating 46, 1033 (1959). 3288. Projection microradiography of metals, A. W. Ruff, Jr., and L. M. Kushner. Proc. 2d Intern. Conf. X-ray Microscopy and X-ray Microanalysis,

Stockholm, Sweden (June 1959). 3288B. Proposal for electro-magnetic sorter, S. Henig. Automatic Control 11, No. 6, 6-8 (Dec. 1959)

.

3288C. Quartz crystals at low temperatures, P. R. Simpson and A. H. Morgan. Proc. 13th Annual

Symp. Frequency Control, p. 207-231 (Aug. 1959). 3289. Radio, ionosphere and airglow observations

during IGY, D. M. Gates. IGY Bull. 29, 1 (1959). 3290. Rapid insertion device for coaxial attenuators, A. Y. Rumbelt and R. J. Como. Rev. Sci. Instr. 30, No. 8, 687 (1959). 3291. Reaction of hydrogen atoms with solid oxygen

at 20°K, R. Klein and M. D. Scheer. J. Chem.

Phys. Note 31, No. 1, 278 (1959). 3292. Reasoning foundations of medical diagnosis,

R. H. Ledley. Science 130, No. 3366, 9 (1959). 3293. Refractive indices and transmittance of several optical glasses in the infrared, G. W. Cleek, J. J. Villa, and C. H. Hahner. J. Opt.

Soc. Am. 49, No. 11, 1090 (1959). 3294. Relaxation processes in multistate systems,

K. E. Shuler. Phys. of Fluids 2, No. 442 (1959). 3295. Removal of organic anions by bone char, V. R. Deitz and H. M. Rootare. Proc. 5th Tech. Session

on Bone Char 1957, p. 297 (Bone Char Research

Project Inc., Charlestown, Mass., 1959).

3296. Unassigned.

3297. Revised term values of Ti I, C. C. Kiess and

M. P. Thekaekara. Astrophys. J. 130, No. 3, 1008

(1959)

.

3298. Rotational transfer in the fluorescence spec- trum of OH ( 2

2

+

), T. Carrington. J. Chem. Phys. Note 31, No. 5, 1418 (1959). 3299. Short time stability of a quartz-crystal os- cillator as measure with an ammonia maser, A. H. Morgan and J. A. Barnes. Proc. IRE 47, No. 10, 1782 (1959). 3300. Simple ultraviolet photometer, R. E. Thiers,

M. Margoshes, and B. L. Vallee. Anal. Chem. 31, 1258 (1959). 3301. Simplification of systems of units currently evolving in the electrical field, F. B. Silsbee. Systems of Units, Am. Assoc. for Advancement of Science, p. 7 (1959). 3302. Solid scintillation counting of H and C

in paper chromatograms , H. H. Seliger and B. W. Agranoff. Anal. Chem. 31, 1607 (1959). 3303. Some aspects of conductive flooring and Epoxy floor toppings, T. H. Boone. Proc. Conf. on Maintenance & Repair of Building Components,

U.S. Air Force, Keesler Field, December 1959. 3304. Some clinical applications of research findings in dental materials, G. C. Paf f enbarger

.

Ohio Dental J. 33, No. 3, 218 (1959). 3305. Some mechanisms of color and ash removal by bone char, A. Gee. Proc. 5th Tech. Session on Bone Char 1957, p. 163 (Bone Char Research Project Inc., Charlestown, Mass., 1959). 3306. Sorting devices in postal tests, S. Henig. Automatic Control 11, No. 6, 6-8 (1959). 3307. Sound transmission loss of some building con- structions, R. V. Waterhouse, R. D. Berendt, and

R. K. Cook. Noise Control 5, No. 4, 40 (1959). 3308. Source function in a non-equilibrium" atmosphere. III. The influence of a chromosphere, J. T. Jefferies and R. N. Thomas. Astrophys. J. 129,

No. 2, 401 (1959). 3309. Spectral study of a visible short-duration

afterglow in nitrogen, G. E. Beale, Jr., and H.

P. Broida. J. Chem. Phys. 31, No. 4, 1030 (1959). 3310. Spectrum of thin target bremsstrahlung

bounded by a forward circular cone, J. H. Hubbell. J. Appl. Phys. 30, No. 7, 981 (1959). 3310A. Sporadic E at VHF in the USA, R. M. Davis,

Jr., E. K. Smith, and C. D. Ellyett. Proc. IRE

47, No. 5, 762 (May 1959)

.

3311. Stack and drain pipe loads, R. S. Wyly. Yearbook of the Am. Soc. Sanitary Eng. 37, 209

(1959)

.

3312. Standard materials for rubber compounding,

F. L. Roth and R. D. Stiehler. Proc. Intern. Rubber Conf., November 8-13, 1959, Am. Chem. Soc.

p. 232 (Washington, D. C. , 1959).

3313. Statistical aspects of the cement testing

program, W. J. Youden. Am. Soc. Testing Materials

Proc. 59, 1120 (1959). 3314. Statistical evaluation of inter-laboratory

cement tests, J. R. Crandall and R. L. Blaine.

Am. Soc. Testing Materials Proc. 59, 1129 (1959). 3315. Statistical mechanical theory of transport

processes. XII. Dense rigid sphere fluids, S. A. Rice, J. G. Kirkwood, J. Ross, and R. W. Zwanzig.

J. Chem. Phys. 31, 1, 575 (1959). 3316. Strain gauge calibration device for extreme

temperatures, R. M. McClintock. Rev. Sci. Instr.

30, No. 8, 715 (1959).

284
1959

3317. Strength of synthetic single crystal sapphire

and ruby as a function of temperature and orientation, J. B. Wachtman, Jr., and L. H. Maxwell. J. Am. Ceram. Soc. 42, No. 9, 432 (1959).

3318. Stress corrosion cracking in low carbon steel,

H. L. Logan. Proc. Physical Metallurgy of Stress Corrosion Fracture Conf. Pittsburgh, Pennsylvania, April 2-3, 1959. Reprinted from Metallurgical Society Conf., Chap. 13, p. 295 (Interscience Publ., New York, N. Y. , 1959).

3319. Structural changes in irradiated plastics

films, C. F. Bersch, R. R. Stromberg, and B. G. Achhammer. Modern Packaging 32, 117 (1959). 3320. Studies of air-to-air residential heat pumps

for USAF, P. R. Achenbach. Proc. USAF Refrigerating 8c Air Conditioning Conf., Wright-Patterson

Air Force Base, Dayton, Ohio, p. 75 (1959). 3321. Studies of the evaporation of condensates containing nitrogen atoms, J. T. Herron and V. H. Dibeler. J. Chem. Phys . 31, No. 6, 1662 (1959). 3322. Sugar retention by char, F. G. Carpenter.

Proc. 5th Tech. Session on Bone Char 1957, p. 279

(Bone Char Research Project Inc., Charlestown,

Mass., 1959).

3323. Summary of area 4 discussions, M. E. Stevens.

Proc. Intern. Conf. on Scientific Information,

p. 803 (Washington, D. C, 1959).

3324. Survey of variations in use for conducting laboratory-scale column filtration tests, V. R. Deitz, Proc. 5th Tech. Session on Bone Char 1957,

p. 237 (Bone Char Research Project, Inc., Charlestown, Mass. (1959). 3325. Synthesis and biological activity of some quarternary ammonium and related compounds that suppress plant growth, C. F. Krewson, J. W. Wood,

W. C. Wolfe, J. W. Mitchell, and P. C. Marth.

Agri. and Food Chem. 7, 264 (1959). 3326. System loss in radio-wave propagation, K. A. Norton. Proc. IRE Letter to Editor 47, No. 9, 1661 (1959). 3327. Temperature dependence of the refractive in- dex increment of polystyrene in solution, J. H. O'Mara and D. Mclntyre. J. Phys. Chem. 63, 1435

(1959) . 3328. Unas signed.

3329. The absorption spectrum of solid oxygen, E. M. Horl. J. Mol. Spectroscopy 3, No. 5, 548

(1959) . 3330. The analysis of Latin squares with a certain

type of row-column interaction, J. Mandel. Tech- nometrics 1, No. 4, 379 (1959). 3330A. The cement reference laboratory (1929-

1959), J. R. Dise. Am. Soc. Testing Materials

Proc. 59, 369 (1959). 3331. The changing character of chemical research

in government, E. Wichers. 36th Annual Am. Inst. Chemists' Meeting May 7, 1959, Atlantic City,

N. J. Chemist, XXXVI, No. 7, 260 (1959). 3332. The construction of Hadamard matrices, E. C. Dade and K. Goldberg. Mich. J. Math. 6, 247

(1959) . 3333. The dissocation constant of CaOH

+ from 0° to 40°C, R. G. Bates, V. E. Bower, R. G. Canham, and

J. E. Prue. Trans. Faraday Soc. 55, No. 444, 2062-2068 (Dec. 1959). 3334. The double bond isomerization of olefins by hydrogen atoms at -195°, M. D. Scheer and R. Klein. J. Phys. Chem. 63, 1517 (1959). 3335. The evolution of certified reference materials, J. I. Hoffman. Anal. Chem. 31, No. 12, 1934

(1959) .

3335A. The inner solar corona during June 1959, G. A. Newkirk, G. W. Curtis, D. K. Watson, R. Manning, and J. Shelby. Nature 184, 1308 (Oct. 24, 1959). 3336. The interlaboratory evaluation of testing

methods, J. Mandel and T. W. Lashof. ASTM Bull.

239, 53 (1959). 3337. The long look at national research needs, A.

V. Astin. Anal. Chem. 31, 21A (Oct. 1959).

3338. The measuring process, J. Mandel. Technometrics 1, No. 3, 251 (1959)

.

3339. The nature, cause and effect of the porosity

in electrodeposits . III. Microscopic detection

of porosity, F. Ogburn and D. W. Ernst. Plating

46, 831 (1959). 3340. The nature, cause and effect of the porosity

in electrodeposits. IV. Influence of gas bubbles

on the formation of pores, F. Ogburn and D. W. Ernst. Plating 46, 957 (1959). 3341. The nature, cause and effect of the porosity

in electrodeposits. V. An evaluation of the sen- sitivity of the ferroxyl test, F. Ogburn, D. W. Ernst, and W. H. Roberts. Plating 46, 1050

(1959) . 3342. The NBS meteor burst communication system,

R. J. Carpenter and G. R. Ochs. IRE Trans. Commun. Systems CS-7, 263 (1959). 3343. The oxide films formed on copper single

crystal surfaces in pure water, 1. Nature of the films formed at room temperature, J. Kruger. J. Electrochem. Soc. 106, No. 10, 847 (1959). 3344. The power spectrum of the variation of a carrier envelope in tropospheric scatter propagation, A. F. Barghausen and R. E. McGavin.

Conv. Record, 5th Natl. Communications Symp., October 5-7, 1959. 3345. The properties of rutile (titanium dioxide)

,

F. A. Grant. Rev. Modern Phys. 31, No. 3, 646

(1959) . 3346. The relation between the absorption spectra

and the chemical constitution of dyes. XXX. Pho- toisomerization of the azo dyes in aqueous solution, M. N. Inscoe, J. H. Gould, and W. R. Brode.

J. Am. Chem. Soc. 81, 5634 (1959). 3347. The research frontier, I. C. Schoonover. Saturday Rev. p. 58 (May 2, 1959).

3348. The role of Government research laboratories,

A. V. Astin. Elec. Engr. 78, No. 7, 738 (1959). 3348A. The structure of electrolytic solutions, W.

J. Hamer. Book (John Wiley & Sons, Inc., New

York, N. Y., 1959). 3349. The use of a vacuum microbalance in studies

of electron tube materials, G. F. Rouse. Proc. 4th Natl. Conf. on Tube Techniques, September

10-12, 1958, Sponsored by the Advisory Group on Electron Tubes, p. 262 (New York University

Press, New York, N. Y. , 1959). 3349A. The variable-frequency method, J. R. Wait.

Book, Overvoltage Research and Geophysical Applications, Ed. J. R. Wait, Chapt. 4, 29 (Pergamon Press Inc., New York, N. Y. , 1959).

3350. Theoretical multiplet strengths, F. Rohrlich. Astrophys. J. 129, No. 2, 441 (1959). 3351. Theoretical problems of reliability measurement and prediction, J. R. Rosenblatt. 3d Ex- ploratory Conf. on Missile Model Design for Re- liability Prediction (White Sands Missile Range, New Mexico) , 1959, p. 29 (1959).

285
1959

33 52. Theory of dielectric relaxation in molecular

crystals, J. D. Hoffman. Archives des Sciences, Society de Physique et d'Histoire Naturelle de Geneve 12, 36 (1959)

.

33 53. Unassigned.

3354. Thermal conductivity of indium antimonide at low temperatures, E. V. Mielczarek and H. P. R. Frederikse. Phys . Rev. 115, No. 4, 888 (1959). 3355. Thermal functions and heats of formation of some of the major vapor species in the boron- oxygen-hydrogen system at elevated temperatures,

D. E. Mann. Proc . Propellant Thermodynamics and Handling Conf . , July 1959, Special Report No. 12, Ohio State University Experiment Station (1959). 3356. Thermodynamic properties of helium at low temperatures and high pressures, D. B. Mann and

R. B. Stewart. Trans. Am. Soc. Mech. Engrs . J. Heat Transfer 81, No. 4, 323-326 (Nov. 1959). 3356AA. Thermoelectric effects, H. P. R. Frederikse, V. A. Johnson, and W. W. Scanlon. Book, Methods of Experimental Physics, ed. K. LarkHorovitz, VI, Chapt . 76, 114-128 (Academic Press

Inc., New York, N. Y., 1959). 3356A. Total photoelectric cross sections of copper, molybdenum, silver, tantalum, and gold at 662 kev, W. F. Titus. Phys. Rev. 115, No. 2, 351 (July 15, 1959). 3357. Transistorized velocimeter for measuring the speed of sound in the sea, C. E. Tschiegg and E. E. Hayes. J. Acoust. Soc. Am. 31, No. 7, 1038

(1959)

.

3358. Trapped energetic radicals, J. L. Franklin

and H. P. Broida. Annual Rev. Phys. Chem. 10, 145 (1959). 3359. Triaxial tension at the heat of a rapidly running crack in a plate, J. M. Frankland.

Trans. ASME series E, 26, No. 4, 570 (1959). 3360. Unassigned.

3361. Un nouveau critere d'univalence des trans- formations dans un R

n

, A. M. Ostrowski. Compt.

rend. acad. sci. 248, 348 (1959).

3362. Unusual radio signals enhancement in the far

east, R. Bateman, J. W. Finney, E. K. Smith, L.

H. Tveten, and J. M. Watts. IGY Bull. 26, 1 (1959) . 3363. Use of a crystal to display high energy X-ray images, J. S. Pruitt. Nondestructive Testing 17, No. 6, 359 (1959).

33 64. Use of electronic computers for aid to medical diagnosis, R. H. Ledley. Proc. IRE 47, No.

11, 1970 (1959). 3365. Variation of the thermodynamic ideal temperature in the polystyrene-cyclohexane system, D.

M. Mclntyre, J. H. O'Mara, and B. C. Konouck. J. Am. Chem. Soc. 81, 3498 (1959)

.

3366. Vibrational distribution functions in bimolecular dissociation reactions, K. E. Shuler. J. Chem. Phys. 31, 375 (1959). 3367. Vibrational intensity distributions in the nitrogen afterglow, U. H. Kurzweg and H. P. Broida. J. Mol. Spectroscopy 3, No. 4, 388

(1959) . 3368. Vibrational spectrum of cyanate ion in various alkali halide lattices, A. Maki and J. C. Decius. J. Cham. Phys. 31, No. 3, 772 (1959). 3368A. Vortex formation and resistance in periodic

motion, J. S. McNown and G. H. Keulegan. J. Engr. Mech. Div . Proc. Am. Soc. Civil Engrs. 85,

No. EM-1, 1849 (1959). 3369. Wave length definition of the meter, systems

of units, national and international aspects, I. C. Gardner. Am. Assoc. Advancement of Science,

Publ. 57, p. 53 (19 59). 3370. Weather resistant polyvinyl alcohol coatings,

K. F. Plitt. Paint and Varnish Production 49, 27 (1959). 3371. Width of cracks in concrete at the surface

of reinforcing steel evaluated by means of tensile bond specimens, D. Watstein and R. C. Mathey. J. Am. Concrete Inst. 31, No. 1, 47

(1959)

.

286
1960

3372. A barium film hygrometer element, F. E. Jones and A. Wexler. J. Geophys . Research 65, No. 7, 20087-2095 (July 1960)

.

3373. A burst test for high strength fabrics, K. F. Plitt and L. A. Dunlap. ASTM Bull. 246, 33

(1960) . 3373A. A combined analog-digital differential

analyzer (CADDA) , W. D. Urban, W. R. Hahn, Jr., and H. K. Skramstad. Proc. Combined Analog

Digital Computer Systems Symp., Phila. , Pa.,

Dec. 1960, 2d item (1960)

.

3374. A comparative study of absolute zenith in- tensities of [01] 5577, F. E. Roach, J. W. McCaulley, E. Marovich, and C. M. Purdy. J. Geophys. Research 65, No. 5, 1503 (1960). 3375. A comparison of atomic beam frequency standards, R. E. Beehler, R. C. Mockler, and C. S. Snider. Nature 187, No. 4738, 681-682 (Aug. 20, 1960)

.

3376. A compilation and correlation of the P-V-T

data of normal hydrogen from saturated liquid to 80°K, R. B. Stewart and V. J. Johnson. Proc. 1959 Cryogenic Eng. Conf . Book, Advances in Cryogenic Engineering 5, Paper K-7, 557-565 (Plenum

Press, Inc., New York, N. Y. , 1960). 3376A. A computer for weather data acquisition, P. Meissner, J. A. Cunningham, and C. A. Kettering.

Proc. Eastern Joint Computer Conf., Dec. 13-15,

1960, p. 57 (New York, N. Y. , 1960).

3377. A conference on the propagation of ELF elec- tromagnetic waves, J. R. Wait. Proc. IRE 48, No.

9, 1648-1949 (Sept. 1960).

3378. A continuous poker game, A. J. Goldman and

J. J. Stone. Duke Math. J. 27, No. 1, 41 (1960). 3379. A correlation of signal color recognition

tests, F. C. Breckenridge. Special Report 5-1-

22, 6th Intern. Tech. Conf. on Lighthouses and Other Aids to Navigation (U.S. Coast Guard, Wash., D. C, Sept. 26. 1960). 3380. A demonstration of color perception with a- bridged color-projection systems, C. S. McCamy. Photographic Sci. and Engr. 4, No. 3, 155

(1960) . 3381. A further note on "sweepers", J. M. Watts.

J. Atmospheric and Terrest. Phys. 18, 81 (1960). 3382. A kinetics study of ortho-para hydrogen conversion, R. N. Keeler, D. H. Weitzel, J. H. Blake, and M. Konecnik. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper K-l , 511-517 (Plenum Press, Inc., New

York, N. Y., 1960).

3383. A method for efficiently providing low tem- perature liquids on a large scale to an accelerated experimental program, A. K. Stober. Proc. Xth Intern. Congress of Refrigeration (Copenhagen, Denmark, 1959). Book, Progress in Refrigeration in Science and Technology I, No. 1, 17-

18 (Pergamon Press, Inc., London, England, 1960).

3384. A method of cutting threads in glass and ceramic tubes, E. I. Klein. Rev. Sci. Instr. 31, No.

5, 571 (1960). 3385. A method of improving isolation in multi-channel waveguide systems, G. F. Engen. IRE Trans. Microwave Theory and Tech. Letter MTT-8, No. 4, 460-461 (July 1960)

.

3386. A microwave impedence meter capable of high

accuracy, R. W. Beatty. IRE Trans. Microwave

Theory and Tech. Letter MTT-8, No. 4, 461-463

(July 1960).

3387. A modulated subcarrier technique of measuring

microwave phase shifts, G. E. Schafer. IRE Trans. Instrumentation 1-9, No. 2, 217-219 (Sept. 1960).

3388. A note regarding the mechanism of UHF prop- agation beyond the horizon, A. D. Watt, E. F. Florman, and R. W. Plush. Proc. IRE Letter 48, 252 (1960). 3389. A possible effect of lower atmospheric di- vergence on local electron density in the ionosphere, R. W. Knecht and N. MacDonald. Inst. Solar Terrest. Research Tech. Rept. 8, 1-23

(High Altitude Observatory, Boulder, Colo., Mar. 1960)

.

3390. A precision RF attenuation calibration system, C. M. Allred and C. C. Cook. IRE Trans. In- 268-274 (Sept. 1960).

3391. A precision RF power

A. Hudson. IRE Trans. Ins

2, 280-283 (Sept. 1960). 3392. A prototype rubidi

dard, R. J. Carpenter,

Bender, S. Saito, and

isfer standa]

1-9, No. vapor frequency stan-

, C. Beaty, P. L.

0. Stone. IRE Trans.

2, 132-135 (Sept. 1960). 3393. A radio-frequency permittimeter , R. C. Powell and A. L. Rasmussen. IRE Trans. Instru- mentation 1-9, No. 2, 179-184 (Sept. 1960). 3394. A rating method for refrigerated trailer

bodies hauling perishable foods, C. W. Phillips,

W. F. Goddard, Jr., and P. R. Achenbach. ASHRAE

J. 2, No. 5, 45-50 (May 1960).

3395. A rating method for refrigerated trailer

bodies hauling perishable food, C. W. Phillips,

W. F. Goddard, P. R. Achenbach, H. D. Johnson,

and R. W. Penney. U.S. Dept. of Agric. Marketing

Research Rept. No. 433 (Sept. 1960).

3396. A rating scale method for evaluating re- search positions, H. A. McKean, J. Mandel, and

M. N. Steel. Personnel Admin. 23, No. 4, 29-36

(July-Aug. 1960). 3397. A recommended standard resistor-noise test system, G. T. Conrad, Jr., N. Newman, and A. P. Stansbury. IRE Trans. Component Parts CP-7 , No.

3, 71-88 (Sept. 1960). 3398. A review of the hydraulics of circular

sewers in accordance with the Manning formula,

R. S. Wyly. Yearbook, Am. Soc. Sanitary Eng. 38, 154 (1960). 3399. A search for geomagnetic singular days, C.

5. Warwick, N. McDonald, and T. Pohrte. J. Geophys. Research Letter to Editor 65, No. 9, 3013- 3015 (Sept. 1960).

3400. A simple apparatus for making 10M-100M

spheres of low melting point metals, H. Van der Laan and R. W. Nicholls. Rev. Sci. Instr. 31, 212 (1960). 3401. A simple centering jig and goniometer for punching or drilling spheres for structural

models, D. K. Smith. Am. Mineralogist 45, No. 5-

6, 717-725 (1960). 3402. A standard current transformer and comparison method—a basis for the establishing ratios

of currents at audio frequencies, B. L. Dunfee.

IRE Trans. Instrumentation 1-9, No. 2, 231-236

(Sept. 1960).

3403. A study of condensing-vacuum insulation,

D. A. Van Gundy, L. 0. Mullen, and R. B. Jacobs.

Proc. 1959 Cryogenic Eng. Conf. Book, Advances

in Cryogenic Engineering 5, Paper C-5, 162-170

(Plenum Press, Inc., New York, N. Y. , 1960).

287
1960

3403A. A study of solar activity associated with

polar cap absorption (abstract), C. S. Warwick

;and M. Wood. Polar Cap Absorption Conf

.

(Kiruna, Sweden, Aug. 8-11, 1960), Arkiv Geofyski 3, No. 21, 457 (1960). 3404. A study of local geomagnetic influence on the [0l3 5577 nightglow emission at Fritz Peak, J. W. McCaulley, S. Matsushita, and F. E. Roach. J. Geophys. Research 65, No. 5, 1499 (1960). 3405. A study of 2-Mc/s ionospheric absorption measurements at high latitudes, K. Davies. J. Geophys. Research 65, No. 8, 2285-2294 (Aug. 1960)

.

3406. A study of two water resistance testers for shoe upper leather, R. L. Hebert. J. Am. Leather Chemists Assoc. 55, No. 7, 388-405 (July 1960).

3407. A technique for reducing errors in permeability measurement with coils, B. L. Danielson and

R. D. Harrington. Proc . IRE 48, No. 3, 365

(1960) . 3408. A technique for gripping high-strength fabrics during physical tests, K. F. Plitt and L. A. Dunlap. ASTM Bull. 246, 33 (1960). 3408A. A test method for air-entrainment of standard Ottawa sand, M. R. DeFore and H. J. Corah. ASTM Bull. No. 248, 48-56 (TP162-166) (Sept. 1960)

.

3409. A test of a procedure for easy estimation of representative monthly electron density profiles

for the ionosphere, J. W. Wright. J. Geophys. Re- search 65, No. 3215-3217 (Oct. 1960).

3410. A transfer instrument for the intercomparison

of microwave power meters, G. F. Engen. IRE Trans. Instrumentation 109, No. 2, 202-208 (Sept. 1960).

3411. A transistor frequency meter, F. R. Bretemps

and S. Saito. Electronic Ind. 19, No. 10, 196-

198 (Oct. 1960). 3411A. A vibrating sample magnetometer, N. V. Frederick. IRE Trans. Instrumentation 1-9, No. 2, 194-196 (Sept. 1960). 3412. Absolute isotopic abundance ratio and atomic weight of silver, W. R. Shields, D. N. Craig, and

V. H. Dibeler. J. Am. Chem. Soc . 82, 5033-5036

(1960) . 3413. Absolute mass spectrometric determination of

the atomic weight of silver, W. R. Shields, D. N. Craig, and V. H. Dibeler. Proc. Intern. Conf. Nuclidic Masses, Ed. H. E. Duckworth, p. 519-531 (University of Toronto Press, Toronto, Ontario,

Canada, 1960).

3414. Absolute measurement of temperature of microwave noise sources, A. J. Estin, C. L. Trembath,

J. S. Wells, and W. C. Daywitt. IRE Trans. In- strumentation 1-9, No. 2, 209-215 (Sept. 1960).

3415. Absorption and scattering of photons by holmium and erbium, E. G. Fuller and E. Hayward.

Proc. Intern. Conf. Nuclear Structure (Kingston, Canada), p. 761-763 (Aug. 1960).

3416. Absorption spectra of solid methane, ammonia,

and ice in the vacuum ultraviolet, K. Dressier

and 0. Schnepp. J. Chem. Phys . 33, No. 1, 270-

274 (July 1960)

.

3416A. Absorption spectra of solid xenon, krypton,

and argon in the vacuum ultraviolet, 0. Schnepp

and K. Dressier. J. Chem. Phys. 33, No. 1, 49-

55 (July 1960)

.

3417. Accurate microwave wavemeters with cor calibration tables, H. E. Bussey. Rev. Sen Instr. 31, No. 4, 410 (1960).

3418. Acid-base equilibria in benzene at three tem- peratures. The comparative reactivities of a phenolic acid and a carboxylic acid with trieth- ylamine and with 1 , 3-dipheylguanidine , M. M. Davis and M. Paabo. J. Am. Chem. Soc. 82, 5081- 5084 (1960). 3419. Aircraft storage batteries, W. J. Hamer. Appl. and Ind., 79, pt. II, 1-11 (Sept. 1960). 3419A. Airglow research in the United States, F. E. Roach. (Triennium Report of US Natl. Comm.

IUGG) Trans. Am. Geophys. Union 41, No. 2, 242-243 (1960)

.

3420. American Dental Association specifications

for dental materials, 1960-1961, G. C. Paffenbarger, J. W. Stanford, and W. T. Sweeney. 4th

ed., Am. Dental Assoc., 88 pages (Chicago, 111., 1960-1961)

.

3421. An analysis of an absolute torsional pendulum viscometer, E. A. Kearsley. Trans. Soc. Rheology III, 69 (1960). 3422. An analysis of the accumulated error in a hierarchy of calibrations, E. L. Crow. IRE Trans. Instrumentation 1-9, No. 2, 105-114 (Sept. 1960).

3423. An analysis of time variations in tropo- spheric refractive index and apparent radio path

length, M. C. Thompson, Jr. , H. B. Janes '.ind J. Kirkpatrick. J. Geophys. Research 65, 193 (1960). 3424. An evaluation of a cesium beam frequency

standard, R. C. Mockler, R. E. Beehler, and J. A. Barnes. Symp. Quantum Electronics-Resource

Phenomena, p. 127 (Columbia University Press, New York, N. Y. , 1960)

.

3425. An improved dc power regulator, R. D. Goodwin. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper L-l

,

577-579, 1960. 3425A. An intermediate size automatically con- trolled hydrogen refrigeration system, D. B. Chelton, D. B. Mann, and B. W. Birmingham. Sup- plement au Bulletin de l'Institut International

du Froid. Eindhoven Commission 1, Annexe 1960-1,

73-81 (1960). 3426. Analysis of fractionally replicated 2m

3 n designs, R. C. Bose and W. S. Connor. Bull. Inst. Intern. Stat. XXXVII, No. 3, 141 (1960). 3427. Analysis of methyl methacrylate copolymers

by gas chromatography, J. Strassburger , G. M. Brauer, M. Tryon, and A. F. Forziati. Anal. Chem.

32, No. 4, 454 (1960). 3428. Analysis of two-factor classifications with respect to life tests, M. Zelen. Book, Contributions to Probability and Statistics, Paper 42,

p. 508 (Stanford University Press, Stanford,

Calif., 1960). 3429. Analytical laboratory problems, J. Mandel.

trans. Metropolitan Conf., Am. Soc. Quality Control, p. 99-107 (Feb. 1960).

3430. Analytical study of creep deflection of structural beams, L. Mordfin. NASA Tech. Note

D-661 (Dec. 1960).

3430A. Annual report from the National Bureau of Standards, C. E. Moore. Astron. J. 65, No. 9, 545-546 (Nov. 1960).

3431. Apparatus for electron optical study of low- density gas flow, S. R. Mielczarek, D. C. Schubert, and L. Marton. Proc. 6th Natl. Symp. on Vacuum Techniques (Pergamon Press, Inc., New

York, N. Y., 1960).

288
1960

3432. Apparent temperature measured as the melting

point of some metal oxides in a solar furnace, J.

J. Diamond and S. J. Schneider. J. Am. Ceram.

Soc. 43, No. 1, 1 (1960). 3433. Application of multiple beam interference to the measurement of long end standards, J. B. Saunders. J. Opt. Soc. Am. Letter to Editor 50, No. 2, 183 (1960). 3434. Applications of graphs and Boolean matrices

to computor programming, R. B. Marimont. SIAM

Review 2, No. 4, 259-268 (Oct. 1960).

3435. Appraisal of Land's work on two-primary color projections. D. B. Judd. J. Opt. Soc. Am. 50, No. 3, 254 (1960). 3436. Approximate cross-sections for inelastic collisions of electrons with atoms: I. Allowed transitions, S. N. Milford. Astrophys. J. 131, 407

(1960) . 3437. Are life testing procedures robust? M. Zelen

and M. C. Dannemiller. Proc. 6th Natl. Symp. on Reliability and Quality Control in Electronics, January 11-13, 1960, p. 185 (Inst. Radio Engrs., Washington, D. C, 1960).

3438. Aromatic f luorocarbons : thermal stability

and synthesis, L. A. Wall. Proc. 6th Joint ArmyNavy-Air Force Elastomer Conf., Oct. 18-20, 1960

(U.S. Army Quartermaster Research and Engineering Command, Natick, Mass.), I, 150 (1960). 3439. Artificial teeth, G. C. Paf f enbarger . Ency- clopedia Britannica, 21, 878 (1960). 3440. Atmospheric bending of radio waves, B. R. Bean. Book, Electromagnetic Wave Propagation, p. 163-181 (Academic Press, Inc., N. Y. , 1960).

3441. Atmospheric limitations on electronic distance measuring equipment, M. C. Thompson, Jr.,

H. B. Janes, and F. E. Freethey. J. Geophys. Re- search 65, 389 (1960). 3442. Atmospheric tides and ionospheric electrodynamics, M. L. White. J. Geophys. Research 65, No.

I, 153 (1960). 3443. Atomic beam frequency standards, R. C. Mockler, R. E. Beehler, and C. S. Snider. IRE Trans. Instrumentation 1-9, No. 2, 120-132 (Sept. 1960)

.

3444. Atomic clocks for space experiments, P. L. Bender. Astronautics p. 69-71 (July 1960).

3445. Atomic frequency standards and clocks, P. L. Bender. Book, Quantum Electronics, p. 110 (Colum- bia University Press, New York, N. Y. , 1960).

3446. Atomistic approach to the rheology of sand- water and clay-water mixtures, W. A. Weyl and W.

C. Ormsby. Chapter 7 in Vol. Ill of the book, Rheology—Theory and Applications, edited by F.

R. Eirich, p. 249 (Academic Press, Inc., New

York, N. Y., 1960). 3446A. Available heat sinks for protected underground installations, B. A. Peavy. Proc. Natl. Acad. Sci.-Natl. Res. Council Meeting on Environmental Engineering in Protective Shelters, p. 237-248 (Feb. 1960).

3447. Balmer decrements: The diffuse nebulae, S. R. Pottasch. Astrophys. J. 131, No. 1, 202 (1960). 3448. Binary silicate glasses in the study of al- kali-aggregate reaction, R. G. Pike, D. Hubbard, and E. S. Newman. Highway Research Board Bull.

275, 39-44 (1960). 3449. Bounds for determinants with positive diagonals, E. V. Haynsworth. Trans. Am. Math. Soc. 96, 395-399 (1960).

3450. Bounds on the dissipation of energy in steady flow of a viscous incompressible fluid around a body rotating within a finite region, E. A. Kearsley. Arch. Rational Mech. and Analysis 5, No. 4, 347-354 (1960). 3451. Bremsstrahlung linear polarization, J. W. Motz and R. C. Placious. II Nuovo Cimento 15, Series X, 571 (1960). 3452. Building codes and our existing school buildings, J. P. Thompson. Proc. School Fire Safety

and Insurance Rating Conference, Department of Education, March 17-18, 1960 (Jacksonville, Fla., 1960)

.

3453. Calibration for carrier operated microphones

and other reversible transducers, M. D. Burkhard,

E. L. R. Corliss, W. Koidan, and F. Biagi. J. Acoust. Soc. Am. 32, No. 4, 501 (1960). 3454. Calomel electrode, W. J. Hamer. Encyclopedia

of Science and Technology 1, 418 (McGraw-Hill Book Co., Inc., New York, N. Y. , 1960).

3455. Carbon resistance thermometry with mixed dc and rf currents, J. J. Gniewek and R. J. Corruccini. Rev. Sci. Instr. 31, No. 8, 899-900 (Aug. 1960).

3456. Carrier-frequency dependence of the basic tranmission loss in tropospheric forward scatter

propagation, K. A. Norton. J. Geophys. Research

65, 2029-2045 (July 1960).

3457. Casimir coefficients and minimum entropy production, R. E. Nettleton. J. Chem. Phys . 33, No.

1, 237-241 (July 1960).

3457A. Cavitation problems in cryogenics, R. B. Jacobs and K. B. Martin. J. Basic Eng. 82, 756-757 (Sept. 1960).

3458. Cavity resonator dielectric measurements of rod samples, H. E. Bussey. Conf. Electrical In- sulation (Annual Report of 1959), Natl. Acad. Sci.-Natl. Research Council Publ . 756, 15 (1960). 3459. Characteristic energy losses of electrons,

L. Marton, L. B. Leder, C. Marton, H. Mendlowitz,

J. A. Simpson, J. A. Suddeth, and M. D. Wagner.

Proc. 4th Intern. Conf. Electron Microscopy, September 1958, Berlin, Germany 1, 281 (1960). 3460. Characteristic energy losses of electrons in carbon, L. Leder and J. A. Suddeth. J. Appl.

Phys. 31, No. 8, 1422-1526 (Aug. 1960).

3461. Charge transfer and electron production in H"+ H collisions, D. G. Hummer, R. R. Stebbings,

W. L. Fite, and L. M. Branscomb. Phys. Rev. 2, 668-670 (July 1960)

.

3462. Chebyshev approximation by ab c, J. R. Rice. J. Soc. Ind. Math. 8, No. 4, 691-702

(1960) . 3463. Chemical reactions of free radicals at low temperature, R. A. Ruehrwein, J. S. Hashman, and

J. W. Edwards. J. Phys. Chem. 64, 1317-1322

(1960) . 3464. Chemically induced vibrational excitation: hydroxyl radical emission in the 1-3 micron

region produced by the H + O3 atomic flame, D. Garvin, H. P. Broida, and H. J. Kostkowski. J. Chem. Phys. 32, No. 3, 880 (1960). 3465. Chemistry, food and civilization, A. T. Mcpherson. J. Wash. Acad. Sci. 50, No. 3, 1 (1960). 3466. Chemistry teaching conference in the Washington area, J. K. Taylor and J. A. Young. J. Chem. Ed. 37, 478 (1960). 3467. Chloride content of the diffusion layer at a silver anode, P. A. Krasley. J. Electrochem. Soc.

107, No. 2, 139 (1960). 289
1960

3468. Clay mineral content of two domestic Kaolins,

W. C. Ormsby and J. M. Shartsis. J. Am. Ceram.

Soc. 43, No. 6, 335 (1960). 3469. Closed circuit liquid hydrogen refrigeration

system, D. B. Chelton, J. W. Dean, and B. W. Birmingham. Rev. Sci. Instr. 31, 712-716 (July 1960)

.

3470. Coatings for space vehicles, J. C. Richmond.

Book, Surface Effects in Spacecraft Materials, p. 92 (John Wiley and Sons, Inc., New York, N. Y.

,

1960)

.

3471. Collection of ions produced by alpha particles in air, Z. Bay and H. H. Seliger. Phys. Rev.

120, No. 1, 141-143 (Oct. 1, 1960). 3472. Collision of a gas atom with a cold surface,

R. W. Zwanzig. J. Chem. Phys, 32, 1173 (1960). 3473. Combined analog-digital differential analyzer, H. K. Skramstad, W. D. Urban, and W. R. Hahn. Electronic Design 8, No. 17, 8-11 (Aug. 17, 1960)

.

3474. Unassigned.

3475. Comment on a paper of Mori on time-correlation expressions for transport properties, M. S. Green. Phys. Rev. 119, No. 3, 829-830 (Aug. 1960)

.

3476. Comments on models of the ionosphere above

hmaxF2, J. W. Wright. J. Geophys . Research 65, No. 9, 2595-2596 (Sept. 1960). 3476A. Comments on the limits to the utilization

of the refractive index at ground level as a radio-meteorological parameter, B. R. Bean and

G. D. Thayer. Proc . IRE 48, No. 8, 1498-1501

(Aug. 1960). 3477. Comparative fixation of calcium and strontium by synthetic hydroxyapatite , R. C. Likins,

H. G. McCann, and A. S. Posner. J. Biol. Chem.

235, No. 7, 2152-2156 (July 1960).

3478. Comparison of national standards for roentgen measurement, H. 0. Wyckoff. Trans. IXth In- tern. Congress of Radiology, p. 1315-1318

(1960) . 3479. Complex conductivity of some plasmas and semi- conductors, P. H. Fang. J. Appl. Research Soc. B (The Hague), 9, 51 (1960). 3480. Complexes of diols and cuprammonium reagent,

E. J. McDonald. J. Rog. Chem. 25, 111 (1960). 3481. Compression properties of hard tooth tissues

and some restorative materials, J. W. Stanford,

K. V. Weigel, G. C. Paf fenbarger , and W. T. Sweeney. J. Am. Dental Assoc. 60, No. 6, 746

(1960). 3482. Unassigned.

3483. Construction coefficient of arsenic trioxide

glass, A. B. Bestul and D. H. Blackburn. J. Chem.

Phys. 33, No. 4, 1274-1275 (Oct. 1960).

3484. Construction of fractional factorial designs

of the mixed 2m

3 n series, W. S. Connor. Book, Contributions to Probability and Statistics, p. 168 (Stanford University Press, Stanford, California, 1960). 3485. Correction for systematic wavelength shifts

in atomic beam devices, R. L. Barger and K. G. Kessler. J. Opt. Soc. Am. 50, No. 4, 352 (1960). 3486. Correlation of an auroral arc and a subvisible monochromatic 6300 A arc with outer-zone ra- diation on November 28, 1959, B. J. O'Brien, J. A. Van Allen, F. E. Roach, and C. W. Gartlein. J. Geophys. Research 65, No. 9, 2759-2766 (Sept. 1960)

.

3487. Cosmic examples of heat conduction in very rare rotating or expanding gases, S. Chapman.

Ann. Geophys. 5, 434 (1960). 3488. Cryogenic impurity adsorption from hydrogen,

M. J. Hiza. Chem. Engr. Prog. 56, No. 10, 68-71

(Oct. 1960). 3489. Cryogenic piping system design and insulation, R. B. Jacobs. Heating, Piping and Air Conditioning, p. 143 (1960). 3490. Crystalline basic calcium orthophosphate

(hydroxyapatite), A. Perloff and A. S. Posner.

Book, Inorganic Syntheses, VI, Chapt. II, A-6

(McGraw-Hill Book Co., Inc., New York, N. Y., 1960)

.

3491. Current and potential relations for the cath- odic protection of steel in a high resistivity

environment, W. J. Schwerdtfeger . Corrosion 16, 79 (1960). 3492. Current thermodynamic research on light-element compounds at the National Bureau of Standards, T. B. Douglas. Proc. Propellant Thermodynamics and Handling Conf., Spec. Rept . 12 (Ohio State University, Columbus, Ohio, June, 1960)

.

3493. Dental materials 1956-1958: A review, G. C. Paf fenbarger. J. Am. Dental Assoc. 60, 600

(1960)

.

3494. Design, construction, and performance of a laboratory-size helium liquefier, D. B. Mann, W.

R. Bjorklund, J. Macinko, and M. J. Hiza. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cry- ogenic Engineering 5, Paper G-5, 346-3 53 (Plenum

Press, Inc., New York, N. Y. , 1960). 3495. Detecting radiation, L. Costrell. Chem. Eng. News p. 132 (March 1960). 3496. Detection and estimation of low concentrations of aldehyde in air, E. E. Hughes and S. G. Lias. Anal. Chem. 32, No. 6, 707 (1960). 3497. Determination of pentosans. Interlaboratory comparison of the aniline acetate, orcinol, and bromination methods, W. K. Wilson and J. Mandel. TAPPI 43, No. 12, 998-1004 (Dec. 1960). 3498. Determination of piezoelectric properties as

a function of pressure and temperature, J. E. McKinney and C. S. Bowyer. J. Acoust. Soc. Am.

32, No. 1, 56 (1960). 3499. Determination of the dipole moment function

from infrared band intensities of diatomic molecules, R. Herman and R. J. Rubin. J. Chem. Phys.

32, 1393 (1960).

3 500. Determination of the recording performance of

a tape from its magnetic properties, E. D. Daniel

and I. Levine. J. Acoust. Soc. Am. 32, No. 2, 258 (1960). 3501. Dewar system for low temperature experiments,

C. T. Zahn. Rev. Sci. Instr. 31, No. 3, 328

(1960)

.

3501A. Dielectric constant and dielectric loss of Ti02 (Rutile) at low frequencies, R. A. Parker

and J. H. Wasilik. Phys. Rev. 120, No. 5, 1631-

1637 (Dec. 1960).

3502. Dielectric properties of polymeric systems,

A. J. Curtis. Book, Progress in Dielectrics, 2, 31 (Heywood and Co., Ltd., London, England,

1960).

3503. Diffractive corrections to the geometrical

optics of low frequency propagation, J. R. Wait.

Book, Electromagnetic Wave Propagation, edited

by M. Desirant and J. L. Michels (Academic Press

Inc., New York, N. Y., 1960). 290
3504. Dimensional changes occurring in dentures

during processing, J. B. Woelfel, G. C. Paffenbarger, and W. T. Sweeney. J. Am. Dental Assoc.

61, No. 4, 413-430 (Oct. 1960).

3505. Unassigned.

3506. Dipole moments of hydrocarbons, D. R. Lide,

Jr. J. Chem. Phys . 33, No. 6, 1879 (Dec. 1960). 3507. Discussion of a paper "On the foundations of goniophotometry" , by D. E. Spencer, S. M. Gray,

I. Nimeroff, and C. A. Douglas. Ilium. Engr.

55, No. 4, 228 (1960). 3508. Disk distribution of flares associated with certain radio bursts, C. S. Warwick. Proc. Symp. on Physical Processes in the Sun-Earth Environment, July 20-21, 1959, Ottawa Defense Research

Telecommunications Establishment, DRTE Publ. No. 1025, p. 249 (1960). 3509. Educational activities of Washington scientists, J. K. Taylor. J. Wash. Acad. Sci. 50, No.

6, 5 (1960). 3510. Effect of structure of the spectra emitted

by solid nitrogen during electron bombardment,

L. J. Schoen and H. P. Broida. J. Mol. Spectroscopy 5, No. 5, 416-419 (Nov. 1960). 3511. Effect of tensile properties of reinforcement on the flexural characteristics of beams,

R. G. Mathey and D. Watstein. J. Am. Concrete

Inst. 31, No. 12, 1253 (1960). 3512. Effects of intermolecular interactions on themodynamic properties of gases at high tem- peratures and pressures, H. W. Wooley. Proc. 4th Hypervelocity Impact Symp., Eglin Air Force Base, Florida, (June 1960). 3513. Efficient harmonic generation, G. F. Montgomery. Proc. IRE 48, No. 2, 251 (1960). 3514. Elastic constants of synthetic single crystal corundum at room temperature, J. B. Wachtman, Jr.,

W. E. Tefft, D. G. Lam, and R. P. Stinchfield. J. Am. Ceram. Soc. 43, No. 6, 334 (1960). 3515. Electric current and fluid spin created by the passage of a magnetosonic wave, C. Truesdell

and R. P. Kanwal. Archiv. for Radional Mech. and Analysis 5, No. 5, 432-439 (1960). 3516. Electric field distribution in a dense

plasma, J. L. Jackson. Phys. of Fluids 3, 927-931

(1960) . 3517. Electrodeless passage of direct current

through an electrolyte, A. Brenner. J. Electrochem. Soc. 107, No. 12, 968-973 (Dec. 1960). 3518. Electrodes, W. J. Hamer. Encyclopedia of Science and Technology 1, 371 (McGraw-Hill Book Co.,

Inc., New York, N. Y. , 1960).

3519. Electroless plated contacts to silicon carbide, R. L. Raybold. Rev. Sci. Instr. 31, No. 7, 781-782 (July 1960)

.

3520. Electrometric pH determination, R. G. Bates. Chimica 14, 111 (April 1960).

3521. Electromotive force (cells), W. J. Hamer. Encyclopedia of Science and Technology 1, 498 (McGraw-Hill Book Co., Inc., New York, N. Y., 1960)

.

3 522. Electron detachment from the negative hydrogen ion by electron impact, S. Geltman. Proc.

Phys. Soc. LXXV, No. 1, 67 (1960). 3523. Electron impact study of the cyanogen halides, J. T. Herron and V. H. Dibeler. J. Am. Chem. Soc. 82, 1555 (1960). 3524. Electron scattering in high magnetic field,

A. H. Kahn. Phys. Rev. 119, No. 4, 1189-1192

(Aug. 1960).

3524A. Electronic conduction in rutile (Ti02) , H. P. R. Frederikse, W. R. Hosier, and J. H. Becker.

Proc. Intern, Conf. on Semiconductor Phys.,

Prague, Czechoslovakia, 1960, p. 868-871 (Publ. House of the Czech. Acad, of Sciences, 1960). 3525. Electronic structure of CH2 and CH3, A. Padgett and M. Krauss. J. Chem. Phys. 32, 189

(1960)

.

3526. Electrophoretic deposition of metals, metalloids, and refractory oxides, V. A. Lamb and W.

E. Reid, Jr. Plating 47, No. 3, 291 (1960). 3527. Emission spectra of N2> 02 , and NO molucules

trapped in solid matrices, H. P. Broida and M. Peyron. J. Chem. Phys. 32, No. 4, 1068 (1960). 3528. Emission spectroscopy, B. F. Scribner. Anal.

Chem. 32, 229 (1960). 3529. Empirical intermolecular potential for inert

gas atoms, H. W. Woolley. J. Chem. Phys. 32, 405

(1960).

3 530. Energy requirements of mechanical shear deg- radation in concentrated polymer solutions, A.

B. Betul. J. Chem. Phys. 32, No. 2, 350 (1960).

3 531. Ensemble method in the theory of irreversibility, R. W. Zwanzig. J. Chem. Phys. 33, No. 5, 1338-1341 (Nov. 1960).

3532. Environmental factors in a family-size underground fallout shelter, P. R. Achenbach, F. J. J. Drapeau, and C. W. Phillips. Proc. Natl. Acad.

Sci. -Natl. Research Council Meeting on Environmental Engineering in Protective Shelters, p. 69-

118 (Feb. 1960).

3 533. Equipment and procedure for the evaluation of total hemispherical emittance, J. C. Richmond and

W. N. Harrison. Bull. Am. Ceram. Soc. 39, No. 11, 668 (Nov. 1960). 3534. Errors in dielectric measurements due to a sample insertion hole in a cavity, A. J. Estin

and H. E. Bussey. IRE Trans. Microwave Theory

and Tech. MII-8, No. 6, 650-653 (Nov. 1960).

3535. Ether extraction of the elements from six molar hydrochloric acid solution, J. I. Hoffman.

Chem. -Anal. 49, No. 2, 62 (1960). 3536. Evaluation of ball bearing separator materials operating submerged in liquid nitrogen, W.

A. Wilson, K. B. Martin, J. A. Brennan, and B. W. Birmingham. ASLE-ASME Lubrication Conf., Oct. 17-19, 1960 (Boston, Mass.), Am. Soc. Lubrication

Engrs. Preprint No. 60-LC4, 50-58 (1960). 3537. Evaluation of some oxide glasses for use as infrared materials, G. W. Cleek and T. G. Scuderi.

Proc. Infrared Information Symp. 5, 4 (Aug. 1960). 3538. Evidence for oxides of nitrogen in the at- mosphere of Mars, C. C. Kiess, C. H. Corliss,

and H. K. Kiess. Science 131, 1319 (1960). 3539. Experimental and theoretical investigation

of the magnetic properties of iron oxide recording tape, E. D. Daniel and I. Levine. J. Acoust.

Soc. Am. 32, No. 1, 1 (1960). 3540. Experimental investigation of creep deflection of extruded and riveted I-beams, L. Mordfin

and N. Halsey. NASA Tech. Note D-662 (Dec. 1960). 3540A. Exploratory research on demineralization,

A. Rose, R. F. Sweeney, T. B. Hoover, and V. N. Schrodt. Chapt. in Book, Saline Water Conversion, Advances in Chemistry Series No. 27, 50-55 (Amer- ican Chemical Society, Washington, D. C, 1960). 3541. Fatigue properties of some high-strength

steels, H. E. Frankel, J. A. Bennett, and C. M. Carman. Am. Soc. Testing Materials Proc. Preprint 65, 60 (1960). 291
1960

3542. Flame spread measurements by the radiant

panel flame-spread method, D. Gross. Forest Products J. X, No. 1, 33 (1960).

3 543. Flexural strength of specimens prepared from several uranium dioxide powders ; its dependence

on porosity and grain size, and the influence of additions of titania, F. P. Knudsen, H. S. Parker,

and M. D. Burdick. J. Am. Ceram. Soc. 43, No. 12, 641-647 (Dec. 1960).

3544. Flow and stress : stratified liquids,

3, No. 2, 158 (1960). 3544A. Fluorescence and rotational relaxation of OH radicals in flames, T. Carrington. Eighth

Symp. (Intern.) on Combustion, p. 257-262 (The Williams & Wilkins Co., Baltimore, Md., 1960). 3545. Forced mixing in boundary layers, G. B. Schubauer and W. G. Spangenberg. J. Fluid Mech.

8, No. 1, 10 (1960). 3546. Formation and trapping of free radicals, Ed.

A. M. Bass and H. P. Broida. Book, 522 pages

(Academic Press, Inc., New York, N. Y., 1960).

3547. Forty years of dental research at the Na- tional Bureau of Standards, W. T. Sweeney. Capital Chemist 10, 228 (Oct. 1960).

3 548. Four-color achromats and superchromats , R. E. Stephens. J. Opt. Soc. Am. 50, No. 10, 1016-1019

(Oct. 1960).

3549. Franck-Condon factors and r-centroids for some bands of the CO fourth positive system, W.

R. Jarmain, R. Ebisuzaki, and R. W. Nicholls.

Can. J. Phys. 38, 510 (1960). 3550. Free radical trapping—theoretical aspects,

J. L. Jackson. Book, Formation and Trapping of Free Radicals, Chapt. 10, p. 327 (Academic Press,

Inc., New York, N. Y. , 1960).

3551. Free radi.

Flo: gamma-irradiated polystyL. A. Wall, and D. W. Brown. Trans. Faraday Soc 56, 453, 1304-1310 (Sept. 1960).

3552. FM and SSB radio-telephone tests on a VHF ion- ospheric-scatter link during multipath conditions,

J. W. Koch, W. B. Harding, and R. J. Jansen. IRE Trans. Commun. Systems CS-8, No. 3, 183-186

(Sept. 1960).

3553. Fusion of polymer networks formed from linear polyethylene: Effect of intermolecular order, L. Mandelkern, D. E. Roberts, J. C. Halpin, and F.

P. Price. J. Am. Chem. Soc. 82, 46 (1960). 3554. Future needs in shielding research and

theory, L. V. Spencer. Proc. NRDL-OVDM Shielding

Symp., San Francisco, Calif. (Oct. 31-Nov. 1, 1960).

3 thickness of chromium

small-bore tubes, V. Krasley. Plating 47, No. 2,

3 555. Gages for measu: on the internal sur: A. Lamb and P. A. 176 (1960). 3556. Generating fui Math. Soc. 11, No.

3 557. Geometric and i Geophys. Research l

ctions for formal power series

riables, K. Goldberg. Proc. Am.

6, 988-991 (Dec. 1960). solar data, J. V. Lincoln. J. 1347 (1959) ; 65, 374, 788, 1317, 1639, 1821 (1960). 3558. Geomagnetic storms and the space around the earth, S. Chapman. Nature 187, No. 4740, 824-827

(Sept. 3, 1960). 3559. Glass electrode, W. J. Hamer. Encyclopedia of Science and Technology 1, 209 (McGraw-Hill Book

Co., Inc., New York, N. Y. , 1960).

3560. Graphs for bivariate normal probabilities,

M. Zelen and N. C. Severo. Ann. Math. Stat. 31, No. 3, 619-624 (Sept. 1960). 3561. Green and purple sulfur: electron spin reso- nance studies, H. E. Radford and F. 0. Rice. J. Chem. Phys. 33, No. 3, 774-776 (Sept. 1960). 3562. Halobenzenes as sensitizers for the radiation

induced polymerization of styrene, D. W. Brown

and L. A. Wall. J. Polymer Sci. 44, 325-340

(June 1960).

3563. Hard gallium alloys for use as low contact resistance electrodes and for bonding thermocouples into samples, G. G. Harman. Rev. Sci. Instr. 31, No. 7, 717-720 July 1960). 3563A. Heat of formation of the most stable form

of metaboric acid, HB02 (cI), M. V. Kilday and

E. J. Prosen. J. Am. Chem. Soc. Commun, to Editor 82, 550 (1960). 3564. Heated cell for quantitative infrared spec- trophotometry, F. J. Linnig and J. E. Stewart.

Anal. Chem. 32, 891 (1960). 3565. High altitude observation techniques, D. M. Gates. Science Letter to Editor 131, 266 (1960). 3566. High-dispersion spectra of Jupiter, C. C. Kiess, C. H. Corliss, and H. K. Kiess. Astrophys.

J. 132, No. 1, 221-231 (July 1960). 3566A. High-energy X-ray spectrometer using large anticoincidence sodium iodide crystals, J. M. Wyckoff. Proc. Total Absorption Gamma-Ray Spectrometry Symp., Gatlinburg, Tenn. , May 10, 1960, p. 201-210 (1960). 3567. High pressure form of analcite and free en- ergy change with pressure of analcite reactions,

H. S. Yoder, Jr., and C. E. Weir. Am. J. Sci. 258A, 420 (1960). 3568. High resolution millimeter wave Fabry-Perot

interferometer, W. Culshaw. IRE Trans. Microwave

Theory and Tech. MTT-8, 182 (1960). 3569. Highlights of the consultative committee on international radio (CCIR) activities in the field of radio propagation, J. W. Herbstreit.

9th Plenary Assembly of CCIR, Proc. IRE 48, No.

I, 45-53 (Jan. 1960). 3570. How the method of rating the cooling load of refrigerated trailers has been standardized, P.

R. Achenbach, C. W. Phillips, and W. F. Goddard. ASHRAE J. 2, No. 5, 45 (1960). 3571. Hydrogen bonding in calcium-deficient hydroxyapatites , A. S. Posner, J. M. Stutman, and

E. R. Lipplncott. Nature 188, No. 4749, 486-487

(Nov. 1960). 3572. Hydrogen electrode, W. J. Hamer. Encyclopedia

of Science and Technology 1, 549 (McGraw-Hill Book Co., Inc., New York, N. Y., 1960). 3573. Identification of textile coatings by infrared spectroscopy, F. H. Forziati, R. T. Hite, and

K. Wharton. Am. Dyestuff Reptr. 49, No. 4, 29

(1960) . 3574. Improved NBS abrasive jet method for meas- uring abrasion resistance of coatings, A. G. Roberts. ASTMBull. 244, 48 (1960). 3575. Improvements in radio propagation prediction

service, W. B. Chadwick. Elec. Engr. 79, No. 9, 721 (Sept. 1960). 3576. Increase in mileage of leather soles, J. M. Cassel. Naval Research Rev. p. 7 (Jan. 1960). 3577. Influence of earth curvature and the ter- restrial magnetic field on VLF propagation, J. R. Wait and K. P. Spies. J. Geophys. Research

65, No. 8, 2325-2331 (Aug. 1960). 292
1960

3578. Influence of source distance on the impedance characteristics of ELF radio waves, J. R. Wait. Proc. IRE 48, No. 7, 1338 (July 1960).

3579. Infrared emission spectra of gaseous B2O3

and B202, D. White, D. E. Mann, P. N. Walsh, and

A. Sommer. J. Chem. Phys. 32, No. 2, 481 (1960). 3580. Infrared emission spectrum of gaseous HBO2,

D. White, D. E. Mann, P. N. Walsh, and A. Sommer.

J. Chem. Phys. 32, No. 2, 488 (1960). 3581. Infrared spectra of solid hydrocarbons at very low temperatures, J. Comeford and J. Gould.

J. Mol. Spectroscopy 5, 474 (1960). 3582. Infrared studies of dense forms of ice, E.

R. Lippincott, C. E. Weir, and A. Van Valkenburg.

J. Chem. Phys. 32, No. 2, 612 (1960). 3582A. Integrated starlight over the sky, F. E. Roach. Union Geodesique et Geophys. Intern. No.

33, 92 (Dec. 1960).

3583. Interference fringes with mercury-198 and

a path difference of 2000 mm, I. C. Gardner and

K. F. Nefflen. J. Opt. Soc. Am. Letter to Editor

50, No. 2, 184 (Feb. 1960).

3584. Intermolecular forces from optical spectra

of impurities in molecular crystals, R. W. Zwanzig. Mol. Physics 3, No. 4, 305-311 (July 1960).

3584A. International comparisons of radioactivity

standards, W. E. Perry and W. B. Mann. Proc. Ninth Intern. Congress on Radiology, Munich,

Germany, July 1959, 23, VII-30. VII, 1338-1342

(Urban and Schwarzenberg, Munich, Germany, 1960).

3585. International standard of light, R. P. Teele.

J. Opt. Soc. Am. 50, 1135 (Nov. 1960).

3586. International standard for plastics, G. M. Kline. SPE J. 16, 619 (1960). 3587. Interpolation of platinum resistance thermometers, 20° to 273.15° K, R. J. Corruccini. Rev.

Sci. Instr. 31, 637-640 (June 1960).

3588. Interpretation of intensity distributions in the N2 Lyman-Birge-Hopf ield and CO fourth positive systems, R. W. Nicholls. Nature Letter 186, 958 (1960). 3589. Introduction and summary, B. E. Foster. Symp. Effects of Water-Reducing Admixtures and Set-retarding Admixtures on Properties of Concrete, Am. Soc. Testing Materials Spec. Tech. Publ. 266, In- troduction, p. 1-2 and Summary, p. 240-246 (June 1960).

3 590. Ionic charges of glass surfaces and other ma- terials and their possible role in the coagulation of blood, D. Hubbard and G. L. Lucas. J. Appl. Physiol. 15, No. 2, 265 (1960). 3591. Ionization of a static interplanetary gas and expected emission lines from this gas, H. N. Rundle. Planet and Space Sci. 2, 86-98 (1960). 3592. "ionization" of the hydrogen negative ion,

S. Geltman. Proc. 4th Intern. Conf. Ionization Phenomena in Gases (North Holland Publ. Co., Amsterdam, The Netherlands) Uppsala 17-21, p. IA19

(1960)

.

3593. Ionization potential of fluorine, J. T. Her- ron and V. H. Dibeler. J. Chem. Phys. 32, No. 6, 1885 (1960). 3594. Ionospheric mapping by numerical methods, W.

B. Jones and R. M. Gallet. Telecomun. J. 12, 260-

264 (Dec. 1960). 3595. Ionospheric scintillation of radio waves of extra-terrestrial origin, R. S. Lawrence. Book, The Radio Noise Spectrum, Chapt. 3, 43 (Harvard University Press, Cambridge, Mass., 1960).

3596. Irrational power series, M. Newman. Proc.

Am. Math. Soc. 11, 699-702 (Oct. 1960).

3597. Isotope effect in the hydrogen atom-formaldehyde reaction, J. R. McNesby, M. D. Scheer, and R. Klein. J. Chem. Phys. 32, No. 6, 1814-

1817 (June 1960)

.

3598. Isotope exchange processes in solid nitrogen

under electron bombardment , R. Klein and E. M. Horl. J. Chem. Phys. 32, No. 1, 307 (1960). 3599. Kinetic isotope effect in the reaction of methyl radicals with ethane, ethane-dg, and ethane 1, 1, l-d3 , J. R. McNesby. J. Phys. Chem.

64, No. 11, 1671 (Nov. 1960). 3600. Kinetics of the transport of water through

silicate glasses at ambient temperatures, W. K. Haller. Phys. Chem. of Glass, 1, 46 (1960). 3601. Letter to Editor of "Strain Gage Readings",

J. W. Pitts. Strain Gage Readings 3, No. 1, 45

(1960). 3602. Liquid hydrogen for chemical and nuclear

rockets, R. B. Scott. Discovery XXI, No. 2, 74 (1960) .

. T. McPherrical MeasureLttsburgh,

3603. Local standards labor,

son. 1960 Ed. Handbook of Elect: ments, p. 72 (Instruments Publ.

Pa., 1960).

3604. Location of the plane of best average definition for airplane camera lenses, F. E. Washer

and W. P. Tayman. Photogrammetric Eng. 26, No.

3, 475-488 (1960). 3605. Low and medium frequency radio propagation,

K. A. Norton. Electromagnetic Wave Prop. Proc. Intern. Conf. Propagation of Radio Waves, Liege, Belgium, 1958, p. 375 (Academic Press, Inc., New York, N. Y. , 1960)

.

3606. Low angle X-ray diffraction of fibrous polyethylene, A. S. Posner, L. Mandelkern, C. R. Worthington, and A. F. Diorio. J. Appl. Phys.

31, No. 3, 536 (1960). 3607. Low-energy photoproduc

R. A. Schrack, S. Penner,

II Nuovo Cimento 16, No. X, 1960)

.

nfigurations in the first spec-

., R. E. Trees. Physica 26, 353-

from comple: 759-761 (Mar. 3608. Low even < trum of thorii 360 (1960). 3609. Low frequency solar bursts and noise storms,

A. Boischot, R. H. Lee, and J. W. Warwick. Astrophys. J. 131, No. 1, 61 (Jan. 1960). 3610. Low scatter high current gas target for D-D

neutrons, A. C. B. Richardson. Rev. Sci. Instr.

31, No. 11, 1202-1203 (Nov. 1960).

3611. Low temperature equipment and techniques,

F. A. Mauer. Book, Formation and Trapping of Free Radicals, Chapt. 5, p. 117 (Academic Press,

Inc., New York, N. Y. , 1960).

3612. Low temperature phase transition of Colemanite, A. Perloff and S. Block. Am. Mineralogist Letter to Editor 45, No. 1-2, 229 (1960). 3613. Low temperature properties of cerous magnesium nitrate, R. P. Hudson, R. S. Kaeser, and H.

E. Radford. Proc. Vllth Intern. Conf. Low Tem- perature Physics (University of Toronto, Canada),

p. 45-48 (1960). 3614. Low temperature static seals using elastomers

and plastics, D. H. Weitzel, R. F. Robbins, G. R. Bopp, and W. R. Bjorklund. Rev. Sci. Instr. 31,

No. 12, 1350-1351 (Dec. 1960).

2 93
1960

3615. Low-temperature transport propert mercial metals and alloys. II. Alt Powell, W. J. Hall, and H. M. Roder. J. Appl.

Phys. 31, 496 (1960). 3616. Low-temperature transport properties of com- merical metals and alloys. III. Gold-cobalt, R. L. Powell, M. D. Bunch, and E. F. Gibson. J. Appl. Phys. 3, 504 (Mar. 1960).

3617. Low-temperature transport properties of com- mercial metals and alloys. IV. Reactor garde Be,

Mo, and W, R. L. Powell, J. L. Harden, and E. F. Gibson. J. Appl. Phys. 31, No. 7, 1221-1224

(July 1960)

.

3618. Unassigned.

3619. Machine model of recall, M. E. Stevens. Proc. UNESCO Intern. Conf. on Information Processing,

p. 309 (Paris, Munich, London, 1960).

3620. Magnetic resonance determination of the nu- clear moment of tantalum-181 in KTaOg , L. H. Bennett and J. I. Budnick. Phys. Rev. 120, No.

5, 1812-1815 (Dec. 1960). 3621. Magnetic susceptibility of tetragonal ti- tanium dioxide, F. E. Senftle, T. Pankey, and

F. A. Grant. Phys. Rev. 120, No. 3, 820-825

(Nov. 1, 1960). 3622. Magnetoresistive effects in indium antimonide and indium arsenide, H. P. R. Frederikse

and W. R. Hosier. Proc. Intern. Conf., Brussels,

1958, Book, Solid state physics in electronics

and telecommunications 2, Pt. 2, 651 (1960). 3623. Many changes reflected in new dry cell standard, W. J. Hamer. Mag. of Standards 31, No. 3, 81 (1960). 3624. Mass spectrum and appearance potentials of tetraf luorohydrazine , J. T. Herron and V. H. Dibeler. J. Chem. Phys. 33, No. 5, 1595-1596

(Nov. 1960). 3625. Mass spectrometry, V. H. Dibeler and R. M. Reese. Anal. Chem. 32, No. 5, 211 (1960). 3626. Matrix algebra for calculating multi-component mixtures, F. Ordway. J. Portland Cement

Assoc. Research and Devel. Labs. 2, No. 1, 28 (1960) . 3627. Measured distributions of the instantaneous envelope amplitude and instantaneous frequency

of carriers plus thermal and atmospheric noise,

A. D. Watt and R. W. Plush. In Statistical Methods of Radio Wave Propagation: Proc. of a Symp. University of California, Los Angeles, June 18-

20, 1958, p. 233 (Pergamon Press, Inc., New York,

N. Y . , 1960). 3628. Measurement of radiation exposure at the walls of medical X-ray rooms for determining pro- tective barrier requirements, S. W. Smith and J. R. Brooks. Atompraxis 6, No. 3, 77 (1960). 3629. Measurement of reflections and losses of waveguide joints and connectors using microwave

ref lectometer techniques, R. W. Beatty, G. F. Engen, and W. J. Anson. IRE Trans. Instrumentation 1-9, No. 2, 219-226 (Sept. 1960). 3630. Measurement of the smoothness of paper, T. W. Lashof and J. Mandel. TAPPI 43, No. 5, 385 (1960), 3631. Measurements of temperatures and densities in shock-heated hydrogen and helium plasmas, W. L. Wiese, H. F. Berg, and H. R. Griem. Phys. Rev.

120, 1079 (1960). 3631a. Measurement of weak magnetic fields by optical pumping methods, P. L. Bender. Bull. Ampere 9

e

, Pt. II, 621-628 (1960).

3632. Mechanical and electromechanical properties

of indium antomonide, R. F. Potter, J. H. Wasilik

and R. B. Flippen. Book, Mechanical Properties

of Intermetallic Compounds, Chapt. 12, p. 265

(John Wiley and Sons, Inc., New York, N. Y.

,

1960)

.

3633. Mechanical spectrograph shutter for extremely short exposure times, W. L. Wiese. Rev.

Sci. Instr. 31, 943 (1960). 3634. Mechanism of the isothermal decomposition of potassium perchlorate, K. H. Stern and M. Buplin.

J. Phys. Chem. 64, 1781 (1960). 3635. Mechanized conversion of colorimetric data to Munsell renotations, W. C. Reinboldt and J. P. Menard. J. Opt. Soc. Am. 50, No. 8, 802-807

(Aug. 1960). 3636. Megaroentgen dosimetry employing photographic

film without processing, W. L. McLaughlin. Radi- ation Research 13, No. 4, 594-609 (Oct. 1960). 3636A. Mercury atomic beam for metrology, K. G. Keasler, R. L. Barger, and W. G. Schweitzer, Jr. Interferometry Symp., June 9-11, 1959, Paper 2-3

p. 67 (National Physical Laboratory, Teddington, Middlesex, England, 1960). 3637. Metal powder additives in evacuated-powder

insulation, B. J. Hunter, R. J. Kropschot, J. E. Schrodt, and M. M. Fulk. Proc. 1960 Cryogenic

Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper C-3 , 146-156 (Plenum Press, Inc., New York, N. Y. , 1960)

.

3638. Method for evaluating protection afforded by structures against fallout radiation, C. Eisenhauer. Proc. NRDL-OCDM Shielding Symp. (San Francisco, Calif., Oct. 31-Nov. 1, 1960). 3639. Method for measurement of E'/I' in the reci- procity calibration of condenser microphones, W. Koidan. J. Acoust. Soc. Am. 32, No. 5, 611

(1960)

.

3640. Methods of nuclear orientation, E. Ambler.

Book, Progress in Cryogenics 2, 235-280 (Heywood

and Co., Ltd., London, England, 1960). 3641. Methods used at the National Bureau of Standards for measuring thermal emittance at high

temperatures, J. C. Richmond. Book, Surface Effects in Spacecraft Materials, p. 182 (John Wiley and Sons, Inc., New York, N. Y. , 1960).

3642. Microphone diaphragm null method for sound pressure measurement, W, Koidan. J. Acoust. Soc. Am. 32, No. 4, 505 (1960). 3643. VI. Microscopic and macroscopic energy loss distributions. I. Theoretical reviews: a summary,

U. Fano. Natl. Acad. Sci. -Natl. Research Council

Publ. 7 52, Rept. 29, 24 (Aug. 1960). 3644. Microwave absorption in compressed oxygen,

A. A. Maryott and G. Birnbaum. J. Chem. Phys.

32, No. 3, 686 (1960). 3645. Microwave spectroscopy —atomic frequency

standards, J. M. Richardson. Book, Encyclopedia

of Spectroscopy, p. 647-656 (Reinhold Publ.

Corp., New York, N. Y. , 1960).

3646. Microwave spectrum of trans-crotononitrile,

V. W. Laurie. J. Chem. Phys. 32, No. 5, 1588

(1960)

.

3647. Microwave spectrum, structure, and dipole

; of propane, D. R. Lide, Jr. J. Chem. Phys.

.. 5, 1514-1518 (Nov. 1960).

.crowave spectrum, structure, dipole moment

iclear quadrupole effects in vinyl chloride

'elson, E. B. Wilson, Jr., and D. R. Lide, Chem. Phys. 32, 205 (1960). 1
1960

3649. Microwave whistler mode

dense laboratory plasma, R. M. Gallet, J. M. Richardson, B. Wider, G. D. Ward, and G. N. Harding. Phys. Rev. Letter 4, No. 7, 347 (1960). 3650. Mismatch errors in microwave phase shift measurements, G. E. Schafer. IRE Trans. Microwave Theory and Tech. MTT-8, No. 6, 617-622

(Nov. 1960). 3651. Model of the F. Region above HmaxF2, J. W. Wright. J. Geophys. Research 65, 185 (1960). 3652. Models of the atmospheric radio refractive

index, P. Misme, B. R. Bean, and G. D. Thayer.

Proc. IRE 48, No. 8, 1498-1501 (Aug. 1960).

3653. Modern theories of materials, C. Truesdell.

Trans. Soc. Rheology IV, 9-22 (1960). 3654. Monte Carlo calculations of gamma-ray backscattering, M. J. Berger and D. J. Raso. Radiation Research 12, No. 1, 20 (1960). 3655. Mortars for cavity walls, C. C. Fishburn.

Natl. Acad. Sci.-Natl. Research Council Publ.

793, 37 (1960). 3656. Multiple-layer insulation, R. H. Kropschot,

J. E. Schrodt, M. M. Fulk, and B. J. Hunter.

Proc. 1959 Cryogenic Eng. Conf. Book, Advances

in Cryogenic Engineering 5, Paper D-2, 189-198

(Plenum Press, Inc., New York, N. Y., 1960).

3657. Multivariable investigations, W. J. Youden.

SAE J. 68, No. 6, 65 (1960). 3658. National standards of time and frequency in the United States, J. M. Richardson. Proc. IRE

48, No. 1, 105 (1960). 3659. Near infrared atmospheric transmission to solar radiation, D. M. Gates. J. Opt. Soc. Am.

50, No. 12, 1299-1304 (Dec. 1960).

3660. Neighbor interactions and internal rotations

in polymer molecules. IV. Solvent effect on in- ternal rotations, S. Lifson and I. Oppenheim.

J. Chem. Phys. 33, No. 1, 109-115 (July 1960).

3661. Neutron detection by reactions induced in scintillators, Part I, C. 0. Muehlhause. Fast Neutron Physics, Sec. Ill, Pt. III. B. 387. (Interscience Publ., New York, N. Y. , 1960).

3662. Neutron-insensitive proportional counter for gamma-ray dosimtery, R. S. Caswell. Rev. Sci. Instr. 31, No. 8, 869-871 (Aug. 1960).

3663. New wavelengths for some helium lines, W. C. Martin. J. Opt. Soc. Am. 50, No. 2, 174 (1960). 3664. Nickel-aluminum alloy coatings produced by electrodeposition and diffusion, D. E. Couch and

J. H. Connor. J. Electrochem. Soc. 107, No. 4, 272 (1960). 3665. Nickel oxide thin film resistors for low pressure shock wave detection, K. E. McCulloh.

Rev. Sci. Instr. 31, No. 7, 780-781 (July 1960).

3666. 4-nitrophenyl esters, carbonates, and bis- carbonates as leather fungicides, S. Dahl and A.

M. Kaplan. J. Am. Leather Chemists Assoc. 55, 480

(Sept. 1960).

3667. Nomenclature for standards of radioactivity,

A. G. McNish. Intern. J. Appl. Radiation and Iso- topes 8, 145-146 (Jan. 1960).

3668. Non-reciprocity and time-reversal in microwave circuits, H. A. Fowler. Academie royale de Belgique (Class des Sciences) Koninklijke Acad. Van Belgie 46, No. 11, 963-977 (Dec. 1960). 3669. Non-resonant absorption in symmetric-top

gases; dependence of relaxation, frequency on temperature, A. A. Maryott, A. J. Estin, and G. Birnbaum. J. Chem. Phys. 32, No. 5, 1501 (1960).

3670. Non-resonant microwave absorption and relaxation frequency at elevated pressures, A. A. Maryott and G. Birnbaum. J. Phys. Chem. 64, No.

11, 1778-1780 (Nov. 1960).

3671. Normal approximation to the chi-square and non-central F probability functions, N. C. Severo and M. Zelen. Biometrika 47, No. 3-4, 411-416 (1960). 3672. Normal modes of a lattice of oscillators

with many resonances and dipolar coupling, U. Fano. Phys. Rev. 118, No. 2, 451 (1960). 3673. Nuclear electronics, L. Costrell. Nucleonics

Mag. 17, No. 1, 124 (1960). 3674. Nuclear magnetic resonance in tantalum metal

-

J. I. Budnick and L. H. Bennett. J. Phys. Chem. Solids 16, No. 1/2, 37-38 (Jan. 12, 1960). 3675. Observed variations in the amplitude scintillation of the Cassiopeia (23N5A) radio source,

H. J. A. Chivers. J. Atmospheric and Terrest.

Phys. 19, 54 (Sept. 1960).

3676. On prediction of system behavior, J. R. Rosenblatt. IRE Trans. Reliability and Quality

Control RQC-9, 23-28 (June 1960). 3677. On Stokes flow about a torus, W. H. Pell and

L. E. Payne. Mathematika 7, 78-92 (1960). 3678. On the absorption spectrum of CF2 and its vi- brational analysis, D. E. Mann and B. A. Thrush.

J. Chem. Phys. 33, No. 6, 1732-1734 (Dec. 1960). 3678A. On the analysis of polarization rotation

recordings of satellite radio signals, R. S. Lawrence and C. G. Little. Intern. Sci. Radio

Union, IGY Comm. Some Ionospheric Results Ob- tained During the IGY Proc. Symp. Organized

by URSI/AGI Comm. Brussels, Belgium, p. 391-

399 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1960).

3679. On the calculation of AFMAG anomalies, J. R. Wait. Geophysics 25, 1290-1293 (Dec. 1960).

3680. On the computation of diffraction fields for grazing angles, J. R. Wait and A. M. Conda. Book- Electromagnetic Wave Propagation, edited by M. Desirant and J. L. Michels (Academic Press, Inc. New York, N. Y. , 1960)

.

3681. On the dissociation of polyatomic molecules,

R. J. Rubin and K. E. Shuler. J. Chem. Phys. 33, 438 (1960). 3682. On the electrical conductivity of polar semi conductors at high frequencies, P. H. Fang. Anna

der Physik 7th Series, 6, No. 3, 115 (Sept. 8, 1960)

.

3683. On the electromagnetic response of a con- ducting sphere to a dipole field, J. R. Wait. Geophysics 25, No. 3, 649-658 (June 1960). 3684. On the emission spectrum of NCO excited in condensed discharged N2+C0 at 4.2°K, R. W. Nicholls and S. L. N. G. Krishnamachari . Can. J. Chem. 38, 1652 (1960). 3685. On the excitation of electromagnetic surface

waves on a curved surface, J. R. Wait. IRE Trans - Ant. Prop. AP-8, No. 4, 445-449 (July 1960).

3686. On the nature of the ultraviolet light which accompanies the decomposition of some azides, R. W. Nicholls. J. Phys. Chem. 64, 1760 (1960). 3687. On the night sky emission spectra between

5000 8 and 6500 8, H. N. Rundle. Astrophys. J. 131, 15-24 (Jan. -May 1960).

3688. On the possibility of detecting ionospheric

drifts from occurrence of spread F echoes at low magnetic latitudes, R. W. Knecht. Nature Letter

187, No. 4741, 927 (Sept. 1960). 295
1960

3689. On the power of some rank-order two-sample

tests, J. R. Rosenblatt. Book, Contributions to Probability and Statistics, Paper 32, p. 358 (Stanford University Press, Stanford, California,

1960)

.

3690. On the propagation of ELF radio waves and the influence of a nonhomogeneous ionosphere, J. R. Wait. J. Geophys. Research 65, No. 2, 597 (1960). 3691. On the properties of the vapor pressure

curve, E. H. Brown. Cryogenics 1, No. 1, 37-40

3692. On the resonance excitation of a corrugated

cylinder antenna, J. R. Wait and A. M. Conda.

Proc. Inst. Elec. Engrs . Pt . C, June 1960 (London, England, 1960). 3693. On the structure of trimethylamine-trimethylboron, D. R. Lide , Jr. J. Chem. Phys . Comments

and Errata 32, 1570 (1960). 3694. On the theory of the critical point of a simple fluid, M. S. Green. J. Chem. Phys. 33, No. 5, 1403-1409 (Nov. 1960).

3695. On the theory of the slow-tail portion of atmospheric waveforms, J. R. Wait. J. Geophys. Research 65, No. 7, 1936-1946 (July 1960). 3695A. On the thermodynamic properties of fluids,

E. H. Brown. Supplement au Bulletin de l'Institut International du Froid. Eindhoven Commission 1, Annexe 1960-1, 169-178 (1960). 3696. Opportunities in dental research, G. C. Paffenbarger. J. Am. Dental Assoc. 60, 413 (1960). 3697. Optical constants of aluminum, H. Mendlowitz.

Proc. Phys. Soc. 75, No. 485, 664 (1960). 3698. Optical methods for negative ion studies, S.

J. Smith and L. M. Branscomb. Rev. Sci. Instr.

31, No. 7, 733-747 (July 1960).

3699. Optical study of boundary-layer transition

ic i Spangenberg and W. R. Rowland. Phys. of Fluids

3, No. 5, 667-684 (Sept. -Oct. 1960).

3700. Optical transmissivity and characteristic

energy losses, H. Mendlowitz. J. Opt. Soc. Am.

50, No. 7, 739-740 (July 1960). 3701. Optimum antenna height for ionospheric scatter communication, R. G. Merrill. IRE Trans. Commun. Systems CS-8, 14 (1960). 3702. Our measurement system and national needs, A.

V. Astin. Sperryscope 15, No. 6, 16-19 (1960). 3703. Paratellurite, a new mineral from Mexico, G. Switzer and H. E. Swanson. Am. Mineralogist 45, 1272 (Nov. -Dec. 1960).

3704. Peculiarities of the ionosphere in the Far

East, E. K. Smith and J. W. Finney. A Report on

IGY observations of Es and F-region scatter. J. Geophys. Research 65, 885 (1960). 3705. Peculiarities of the ionosphere in the Far

East; Sporadic E and F Region scatter, E. K. Smith and J. W. Finney. Proc. URSI-AGI Symp. (Brussels, Belgium, 1959), Book, Some Ionospheric

Results Obtained During IGY, Ed. W. J. G. Beynon,

p. 182 (Elsevier Publ. Co., Princeton, N. J., 1960)

.

3706. Periodicity modulo m and divisibility pro- perties of the partition function, M. Newman.

Trans. Am. Math. Soc. 97, 225-236 (1960). 3707. Perovskite-type compounds in binary rare earth oxide systems. S. J. Schneider and R. S. Roth. J. Am. Ceram. Soc. 43, No. 2, 115 (1960). 3708. Phosphorescence of nitrogen and nitrogenargon deposited films at 4.2°K, H. P. Broida and

R. W. Nicholls. J. Chem. Phys. Note 32, No. 2, 623 (1960).

3709. Photochemical rates in the equatorial f2 re- gion from the 1958 eclipse, T. E. VanZandt, R. B. Norton, and G. H. Stonehocker. J. Geophys. Re- search 65, No. 9, 2003-2009 (July 1960); Proc. URSI-AGI Symp. (Brussels, Belgium, 1959), Book, Some Ionospheric Results Obtained During IGY, Ed. W. J. G. Beynon, p. 43 (Elsevier Publ. Co., Princeton, N. J., 1960). 3710. Photodetachment cross section for the negative

ion of atomic exygen, S. J. Smith. Proc. 4th

Intern. Conf. on Ionization Phenomena in Gases,

p. IC219 (North Holland Publ. Co., Amsterdam,

The Netherlands, 1960).

3711. Photolysis of ammonia in a solid matrix at low temperatures, O. Schnepp and K. Dressier. J. Chem. Phys. 32, No. 6, 1682-1686 (1960). 3712. Photometric observations of the twilight

glow [p3 5577 Jo 6300, L. R. Megill. J. Atmospheric and Terrest. Phys. 17, 276 (1960). 3712B. Physical metallurgy and mechanical properties of materials: ductility and the strength of metallic structures, J. M. Frankland. J. Eng. Mech. Div., Proc. Am. Soc. Civil Eng. 86, No. EM6, 45-52 (Dec. 1960).

3713. Physical properties of synthetic rubber- based on dental impression materials, W. A. C. Miller, Jr., W. C. Hansen, G. Dickson, and W. T. Sweeney. J. Am. Dental Assoc. 60, 211 (1960). 3714. Physical quantities proposed for radiation

measurements, L. S. Taylor. Proc. 9th Intern. Congress of Radiology, July 23-30, 1959 (Munchen, Germany), p. 1301-1302 (1960). 3715. Pilot plant data for hydrogen isotope distillation, T. M. Flynn. Chem. Engr. Progr. 56, 37-42

(Mar. 1960).

3716. Plan for the self -qualification of laboratories, A. T. McPherson. ASTM Bull. 246, 17 (1960). 3717. Polymer decomposition: thermodynamics, mechanisms, and energetics, L. A. Wall. SPE J. 16,

Pt. I, 810-814 (Aug. 1960); 16, Pt . II, 1031- 1035 (Sept. 1960). 3717A. Position titles of chemists, W. K. Wilson. Capital Chemist 10, 145 (May 1960).

3718. Post office mechanization, B. M. Levin, M. C. Stark, and P. C. Tosini. Proc. Information Processing and Retrieval, Am. Inst. Elec. Engrs. General Meeting, June 19-24, 1960 (Atlantic City,

N. J., 1960). 3719. Precipitation of the elements on addition of aqueous ammonia to their clear solution, J. I. Hoffman. Chem. -Anal. 49, No. 3, 94 (Sept. 1960). 3719A. Precision millimeter wave interf erometry

at the US National Bureau of Standards, W. Culshaw, J. M. Richardson, and D. Kerns. Inter- ferometry Symp., June 9-11, 1959, paper 4-3, 331 (National Physical Laboratory, Teddington,

Middlesex, England, 1960). 3720. Precision Zeeman modulation microwave spectrometer, R. W. Zimmerer. Rev. Sci. Instr. 31, 106 (1960). 3721. Preparation and thermal stability of tetra- kis- (pentaf luorophenyl) -silane and tris-(penta- fluorophenyl)-phosphine, L. A. Wall, R. E. Donadio, and W. J. Pummer. J. Am. Cham. Soc. 82, No. 18, 4846-4852 (Sept. 1960). 3722. Preparation of electrocardiographic data for analysis by digital electronic computer, H. V. Pipberger, E. D. Fries, L. Taback, and H. L. Mason. Circulation XXI, No. 3, 413 (1960).
1960

3723. Pressure dependence of rotat ionally per- turbed lines in the ultraviolet band spectrum of

CN, H. P. Broida and S. Golden. Can. J. Chem.

38, 1666-1677 (1960). 3724. Procedure for the determination of the noble

metal content of dental gold alloys, H. J. Caul,

W. S. Clabaugh, and M. E. Susa. J. Am. Dental

Assoc. 61, No. 4, 439-443 (Oct. 1960). 3725. Programming for a closed-loop, manned-machine

combined system, D. C. Friedman. Proc. Combined

Analog-Digital Computer Systems Symp. , Dec. 16-17,

1960, Philadelphia, Pa., 12th Article, p. 1-9

(Dec. 1960).

3726. Project ideas for young scientists, J. K. Taylor, P. Knipling, and F. Smith. Joint Board

on Sci. Ed. , p. 144 (1960)

.

3727. Propagation of electromagnetic pulses in a homogeneous conducting earth, J. R. Wait. Appl

.

Sci. Research B8, 213 (1960). 3728. Propagation of electromagnetic waves along a thin plasma sheet, J. R. Wait. Can. J. Phys. 38, 1586-1594 (1960). 3729. Propagation of error in a chain of standards,

A. G. McNish and J. M. Cameron. IRE Trans. In- strumentation 1-9, No. 2, 101-104 (Sept. 1960).

3730. Proposed specification for impression material; synthetic rubber-base, dental, W. A. C. Miller, Jr., W. C. Hansen, G. Dickson, and W. T. Sweeney. J. Am. Dental Assoc. 60, 224 (1960). 3731. Pyrolysis of polyolefins, L. A. Wall and S. Straus. J. Polymer Sci. 44, 313-323 (June 1960).

3731A. Quantum-mechanical calculation of harmonic

oscillator transition probabilities in a one- dimensional impulsive collision, K. E. Shuler

and R. W. Zwanzig. J. Chem. Phys. 33, No. 6, 1778-1784 (Dec. 1960).

3732. 8-quinolinol precipitation of the elements,

J. I. Hoffman. Chem. -Anal. 49, No. 4, 126 (Dec. 1960)

.

3733. Radiation from a slot on a large corrugated

cylinder, J. R. Wait and A. M. Conda. Book, Electromagnetic Wave Propagation, edited by M. Desirant and J. L. Michels (Academic Press Inc., New

York, N. Y. , 1960); Intern. Conf . Propagation of Radio Waves, Leige, Belgium, p. 103 (1958). 3734. Radiation patterns of finite-size corner- reflector antennas, A. C. Wilson and H. V. Cottony. IRE Trans. Ant. Prop. AP-8 , No. 2, 144-157

(Mar. 1960).

3735. Radiation protection standards, L. S. Taylor. Roentgen Bl . 8, No. 2, 33-46 (Feb. 1960); Radiology 74, 824-831 (May 1960).

3736. Radio echoes from field-aligned ionization

above the magnetic equator and their resemblance

to auroral echoes, K. L. Bowles, R. S. Cohen, G.

R. Ochs, and B. B. Balsley. J. Geophys. Research

Letter to Editor 65, 1853 (1960). 3737. Radio transmission by ionospheric and tropo- spheric scatter, D. K. Bailey, H. V. Cottony, R.

C. Kirby, K. A. Norton, R. J. Slutz, R. M. Davis, and R. G. Merrill. (A report of the Joint Technical Advisory Committee.) Proc. IRE 48, 4 (1960) . 3738. Radioactivity standardization in the United

States, W. B. Mann and H. H. Seliger. 2d United

Nations Geneva Conf. (1960). 3739. Rapid frequency analysis of fading radio

signals, J. M. Watts and K. Davies. J. Geophys. Research 65, No. 8, 2295-2301 (Aug. 1960).

3740. Rapid impact loading of textile yarns, J. C. Smith. Book, High Speed Testing, Vol. I, p. 67 (Interscience Publ. Inc., New York, N. Y. , 1960).

741. Rate of reaction of nitrogen atoms with ethylene, J. T. Herron. J. Chem. Phys. 33, No. 4, 1273-1274 (Oct. 1960). 3741A. Rate of vaporization of refractory substances, J. J. Diamond, J. Efimenko, R. F. Hampson, and R. F. Walker. (Proc. Fourth Intern.

Symp. on the Reactivity of Solids, Amsterdam,

The Netherlands, 1960), Book, Reactivity of Solids, ed. J. H. DeBoer, et al . , p. 725-734

(Elsevier Publ. Co., Amsterdam, The Netherlands,

1960)

.

3742. Reaction between copper and solid oxygen

condensed at very low temperatures from a gas discharge, J. Kruger and W. J. Ambs. Nature

186, 794 (1960). 3742A. Real representations of coordinate rotations, U. Fano. J. Math. Phys. 1, No. 5, 417-

423 (Sept. -Oct. 1960). 3743. Recalibration of the NBS carbon-14 standard

by Geiger-Muller and proportional gas counting,

W. B. Mann, H. H. Seliger, W. F. Marlow, and R. W. Medlock. Rev. Sci. Instr. 31, No. 7, 690

(I960) . 3744. Recent developments in space research, A. H. Shapley. School Sci. Math. LX, 528 (1960). 3744A. Recent studies of monochromatic 6300 arcs,

F. E. Roach. Union Geodesique et Geophys. Intern. No. 33, 102 (Dec. 1960). 3745. Recent work with compensated internal gas counters for the standardization of gaseous ra- dionuclides, W. B. Mann. Proc. Symp. Metrology

of Radionuclides, IAEA (Vienna, Austria), p. 307 (1960). 3746. Reducing sugar methods, E. J. McDonald and

B. Y. Foley. J. Assoc. Offic. Agric. Chemists

43, 645 (1960). 3747. Refraction of radio waves at low angles within various air masses, B. R. Bean, J. D. Horn, and L. P. Riggs. J. Geophys. Research 65, No. 4, 1183-1187 (April 1960). 3748. Regulated power supply for instruments, W.

V. Loebenstein. Electronics 33, No. 48, 132

(Nov. 1960). 3749. Relaxation of an isolated ensemble of har- monic oscillators, K. E. Shuler. J. Chem. Phys.

32, 1692 (1960). 37 50. Report on sugars and sugar products, E. J. Mcdonald. J. Assoc. Offic. Agric. Chemists 43, 636 (1960). 3751. Report on the standardization of pH and re- lated terminology, R. G. Bates and E. A. Guggenheim. Intern. Union Pure and Appl. Chem. 1, No.

1, 163-168 (1960). 3752. Residual arc spectra of seventy elements diluted in copper, C. H. Corliss, W. F. Meggers,

and B. F. Scribner. Book, Colloquium Spectroscopicum Internationale VIII, 119-121 (1960). 3753. Resonance scattering by atmospheric sodium.

VII. Measurement of the vertical distribution in twilight, J. W. Chamberlain, D. M. Hunten, and

H. N. Rundle. J. Atmospheric and Terrest. Phys.

17, 205-219 (1960). 3754. Routine methods of radioactivity standardization at the National Bureau of Standards

(USA), W. B. Mann. Proc. Symp. Metrology of Ra- dionuclides, IAEA (Vienna, Austria), p. 89 (1960).
1960

3755. Salt bridge, W. J. Hamer. Encyclopedia of Science and Technology 1 , 18 (McGraw-Hill Book

Co., Inc., New York, N. Y., 1960). 3756. Scattering of photons by deformed nuclei, E.

G. Fuller and E. Hayward. Proc. Intern. Conf

.

Nuclear Structure (Kingston, Canada), p. 763-766

(Aug. 1960). 3757. Sealed-off Hg atomic-beam light source, R.

L. Barger and K. G. Kessler. J. Opt. Soc. Am. 50, No. 7, 651-656 (July 1960). 3758. Seasonal and day-to-day changes of the central positions of the Sq overhead current system,

S. Matsushita. J. Geophys. Research 65, No. 11, 3835-3839 (Nov. 1960).

3759. Seasonal variations in the twilight enhancement of C0l] 5577, L. R. Megill, P. M. Jamnick, and J. E. Cruz. J. Atmospheric and Terrest. Phys.

18, 309-314 (Aug. 1960). 3760. Sensitive thermal conductivity gas analyzer,

J. R. Purcell and R. N. Keeler. Rev. Sci. Instr.

31, No. 3, 405 (1960). 3761. Several new methods to measure diffusivity of semiconductors, J. H. Becker. J. Appl. Phys. 31,

No. 3, 612 (1960). 3762. Shielded coaxial leads for low temperature

electrical measurements, N. L. Brown and R. N. Barfield. Rev. Sci. Instr. 31, No. 5, 517 (1960). 3763. Shielding calculations for civil defense, C. Eisenhauer. Health Phys. 4, 129-132 (1960). 3764. Short wave fadeouts without reported flares,

H. de Mastus and M. Wood. J. Geophys. Research

65, No. 2, 609 (1960). 3765. Silver chloride electrode, W. J. Hamer. En- cyclopedia of Science and Technology 1, 332

(McGraw-Hill Book Co., Inc., New York, N. Y.

,

1960)

.

3766. Simple calculus for all-dielectric interference filters of the Fabry-Perot type, K. D. Mielenz. J. Opt. Soc. Am. '50, No. 10, 1014 (Oct. 1960)

.

3767. Sinnund bedeutung der strahlenschutznorem,

L. S. Taylor. Rontgen-Blatter XIII, Heft 2, 33

(1960) . 3768. Some aspects of fluorine flame spectroscopy,

D. E. Mann. Proc. Propellant Thermodynamics and Handling Conf. Spec. Rept . 12 (Ohio State University, Columbus, Ohio, June 1960).

3769. Some atomic reactions by absorption spectroscopy, H. I. Schiff and T. M. Sugden. Nature 185, 759 (1960). 3770. Some canons of sound experimentation, C. Eisenhart. Bull. Inst. Intern. Stat. XXXVII, No.

3, 339 (1960). 3771. Some ceramic dielectrics with a very low tem- perature coefficient of capacitance, S. Marzullo

and E. N. Bunting. J. Am. Ceram. Soc. 43, No. 11, 609 (Nov. 1960). 3772. Some experimental aspects of nuclear orientation, E. Ambler. Proc. Xth Intern. Congress of Refrigeration, Copenhagen, Denmark, 1959, Progress in Refrigeration in Science and Technology

I. 195-198 (Pergamon Press, Inc., London, England, 1960). 3773. Some fundamentals of modern dimensional metrology, I. H. Fullmer. Am. Soc. Tool and Mfgr. Engrs. Tech. Paper 240, Book 1, 60, 1 (1960). 3773A. Some intra-atomic correlation correction

studies, M. Krauss and B. J. Ransil. J. Chem.

Phys. 33, 840 (1960).

3774. Some magnetoionic phenomena of the Arctic

E-region, J. W. Wright. J. Atmospheric and Terrest. Phys. 18, No. 4, 276-289 (Aug. 1960). 3775. Some mechanical properties of magnesium al- loys at low temperatures, R. P. Reed, R. P. Mikesell, and R. L. Breeson. Proc. 1959 Cryogenic

Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper H-3 , 397-405 Plenum Press, Inc., New York, N. Y. , 1960); Symp. Low-Temperature

Properties of High-Strength Aircraft and Missile

Materials, Philadelphia, Pa., Am. Soc. Testing

Materials Spec. Tech. Publ. 287, 61-73 (1960). 3776. Some properties of new or modified excitation sources, M. Margoshes. Symp. Spectroscopic

Excitation, Am. Soc. Testing Materials Spec.

Tech. Publ. No. 259, 46-58 (1960). 3777. Some results on the cross-capacitances per unit length of cylindrical three-terminal capacitors with thin dielectric films on their electrodes, R. D. Cutkosky and D. G. Lampard. Inst. Elec. Engrs. (London, England) Mono. No. 351M,

p. 1 (1960). 3778. Some SEAC computations of subsonic flows, P. Davis and P. Rabinowitz. Book, Bergman's Linear

Integral Operator Method in the Theory of Com- pressible Fluid Flow, by M. Z. Krzywoblocki , p. 148-172 (Wien, Springer-Verlag, Berlin, Germany,

1960)

.

3779. Spatial distribution of energy dissipated by fallout beta-rays, A. E. Boyd and E. E. Morris. Health Phys. 2, 321-325 (Oct. 1960).

3780. Spectra emitted from rare gas-oxygen solids during electron bombardment, L. J. Schoen and H. P. Broida. J. Chem. Phys. 32, No. 4, 1184 (1960). 3781. Spectroscopic applications of photographic

emulsion mosaics, R. W. Nicholls, Nature Letter

186, 715 (1960). 3781A. Spectroscopic observations of the stratosphere and mesosphere, D. M. Gates. Instr. Soc. Am. J. Conf. Preprint No. 2-NY60 (Sept. 1960).

3782. Spectroscopic temperature measurements in a shock tube using CN as a thermometric molecule,

W. H. Perklnson and R. W. Nicholls. Can. J. Phys.

38, 715 (1960). 3783. Spectrum of K

2 RE Clg, J. C. Eisenstein. J. Chem. Phys. Letter 32, 1887 (1960). 3784. Spectrum of ReFg, J. C. Eisenstein. J. Chem.

Phys. 33, No. 5, 1530-1531 (Nov. 1960). 3785. Spiral patterns in geophysics, V. Agy. J. Atmospheric and Terrest. Phys. 19, No. 2, 136-

140 (1960). 3786. Standard samples and related materials for spectro-chemical analysis, R. E. Michaelis. Am. Soc. Testing Materials Spec. Tech. Publ. 58-D. 116 (1960). 3787. Standards and measurements of microwave surface impedance, skin depth, conductivity and Q,

H. E. Bussey. IRE Trans. Instrumentation 1-9, No.

2, 171-175 (Sept. 1960).

3788. Standards and testing, the key to quality, B.

E. Foster. Eng. Bull. (Purdue University, Lafayette, Ind.), XLIV, No. 6, 54-62 (Nov. 1960).

3789. Standards development by ASTM committee D-20

on plastics, F. W. Reinhart. SPE J. 16, 800

(Aug. 1960). 3790. Standards for plastics--who establishes standards? F. W. Reinhart. SPE J. 16, 175 (Feb.

298
1960

3791. Standards of heat capacity and thermal con- ductivity, D. C. Ginnings. Book, Thermoelectricity, Chapt. 20, p. 320-341 (John Wiley and

Sons, Inc., New York, N. Y. , 1960).

3792. Static and dynamic calibrations of pressure measuring instruments at the National Bureau of Standards, E. C. Lloyd and D. P. Johnson. Automatic and Remote Control-Proc . 1st Intern. Congress of IFAC, p. 274-280 (1960). 3793. Statistical dynamics of simple cubic lattices. Model for the study of Brownian motion,

R. J. Rubin. J. Math. Phys. 1, 309 (1960). 3794. Statistical models for component aging ex- periments, J. R. Rosenblatt. Intern. Conv. Record, IRE 8, Pt. 6, 115-124 (1960). 3795. Stress-strain relationships in yarns sub- jected to rapid impact loading: 6. Velocities of strain waves resulting from impact, J. C. Smith,

J. M. Blandford, and H. F. Schiefer. Textile Re- search J. 30, No. 10, 752-760 (Oct. 1960).

3796. Structural and thermal expansions in alkali silicate binary glasses, L. W. Tilton. J. Am. Ceram. Soc. 43, 9 (1960). 3797. Structure of sulfurous esters, H. Finegold.

Proc. Chem. Soc. (London, England), p. 283-284

(Aug. 1960). 3798. Structure of the isobutane molecule: Change

of dipole moment on isotopic substitution, D. R. Lide, Jr. J. Chem. Phys. 33, No. 5, 1519-1522

(Nov. 1960).

3799. Studies of infrared absorption spectra of solids at high pressure, E. R. Lippincott, C. E. Weir, A. Van Valkenburg, and E. N. Bunting. Spectrachim. Acta 16, 58 (1960). 3800. Studies on sudden commencements of geomagnetic storms using IGY data from United States Stations, S. Matshshita. J. Geophys . Research 65, No. 5, 1423 (1960). 3801. Studies on the flame-spraying of aluminum

oxide, D. G. Moore. Metal Finishing J. 6, No. 70, 397 (Oct. 1960). 3802. Subgroups of the modular group and sums of squares, M. Newman. Am. J. Math. 82, No. 4, 761-

778 (Oct. 1960). 3802A. Supercooling in the barnyard, C. P. Saylor. Capital Chemist 10, No. 9, 292-293 (Dec. 1960). 3803. Surface area and exchange capacity relation

in a Florida kaolinite, W. C. Ormsby and J. M. Shartsis. J. Am. Ceram. Soc. 43, No. 1, 44

(1960) . 3804. Surface area determination of kaolinite using

glycerol adsorption, K. H. Woodside and W. C. Ormsby. J. Am. Ceram. Soc. 43, No. 12, 671-672

(Dec. 1960). 3804A. Survey of USA ionospheric research 1957-

1959, T. N. Gautier, (Triennium Report of US

Natl. Comm. IUGG) Trans. Am. Geophys. Union 41,

No. 2, 232-236 (June 1960). 3804B. Symposium on spectroscopic excitation, B.

F. Scribner. Am. Soc. Testing Materials Spec.

Tech. Publ. 259, 1 (Oct. 1960).

3805. Synthetic mica, A. Van Valkenburg. Book, En- cyclopedia of Chemistry Technology, p. 480 (In- tersciefice Encyclopedia, Inc., New York, N. Y. , 1960).

3806. Tables of thermodynamic and transport properties of air, argon, carbon dioxide, carbon monoxide, hydrogen, nitrogen, oxygen, and steam,

J. Hilsenrath, C. W. Beckett, W. S. Benedict, L. Fano, H. J. Hoge , J. R. Masi, R. L. Nuttall, Y.

S. Touloukian, and H. W. Woolley. Book, 478 pages

(Pergamon Press, Inc., Oxford, London, New York, and Paris, 1960)

.

3807. Techniques in calorimetry. I. A noble-metal

thermocouple for differential use, E. D. West.

Rev. Sci. Inst.r. 31, No. 8, 896-897 (Aug. 1960).

3808. Teeth artificial, G. C. Paffenbarger and D.

B. Denton. Encyclopaedia Britannica 21, 878 (Jan. 1960)

.

3809. Temperature dependance of Young's modulus of vitreous germania and silica, S. Spinner and G. W. Cleek. J. Appl . Phys. 31, No. 8, 1407-1410

(1960) . 3810. Tests for regression coefficient when errors

are correlated, M. M. Siddiqui. Ann. Math. Stat.

31, No. 4, 929-938 (Dec. 1960). 3810A. The absolute simplest form in digital circuit design, R. S. Ledley. Book, Digital Computers and Control Engineering, 835 pages (McGraw- Hill Book Co., Inc., New York, N. Y., 1960).

3811. The absolute zenith intensity of [og 5577

at College, Alaska, F. E. Roach and M. H. Rees

.

J. Geophys. Research 65, No. 5, 1489 (1960). 3811A. The absorption spectra of magnesium and manganese atoms in solid rare gas matrices, 0. Schnepp. J. Phys. Chem. Solids 17, Nos . 3/4, 188-195 (May 1960)

.

3812. The accuracy and precision of measuring tem- peratures above 1000°K, H. J. Kostkowski. Proc. 2d Intern. Symp. on High Temperature Technology, Stanford Research Institute, October 1959, p. 33 (McGraw-Hill Book Co., New York, N. Y. , 1960).

3813. The adhesion of electrodeposited nickel to chromium at elevated temperatures, W. E. Re id,

Jr., and F. Ogburn. J. Electrochem. Soc. 107, No.

2, 91 (1960). 3813A. The angular distribution of beta particles

from oriented cerium-141 nuclei, D. D. Hoppes.

Proc. Seventh Intern. Conf. Low Temperature Physics, University of Toronto, Canada, Aug. 1960,

p. 186 (University of Toronto Press, Toronto,

Canada, 1960).

3814. The anomalous inversion in cristobalite

,

R. F. Walker. Book, Kinetics in High Temperature Processes, Chapt. 28, p. 228 (John Wiley

and Sons, Inc., New York, N. Y. , 1960). 3815. The basic standards for physical measurement,

A. V. Astin. 28th Annual Meeting of the Am. Soc.

of Tool and Mfgr. Engr . , Detroit, Michigan, April

21-28, 1960. 3816. The black void reactor, C. 0. Muehlhause. Nuclear Sci. and Engr. 7, No. 6, 505 (1960). 3817. The calculation of the energy levels of nearly symmetric rotors, S. C. Wait and M. Barnett.

J. Mol. Spectroscopy 6, 276 (1960). 3818. The centennial of spectroscopy, W. F. Meggers

and J. L. Tech. J. Opt. Soc. Am. 50, No. 11, 1035-1038 (Nov. 1960).

299
1960

3819. The CRPL electron density profile program:

some features and early results, J. W. Wright.

Proc. URSI-AGI Symp. (Brussels, Belgium, 1959),

Book, Some Ionospheric Results Obtained During

IGY, Ed. W. J. G. Beynon, p. 215 (Elsevier Publ.

Co., Princeton, N. J., 1960).

3820. The classical field theories, C. Truesdell

and R. Toupin. Hanbuch der Physik III, No. 1, 226-793 (Springer-Verlag, Berlin, Germany, 1960).

3821. The components of power appearing in the har- monic analysis of a stationary process, M. M. Siddiqui. Symp. on Statistical Methods in Radio

Wave Propagation, University of California, Los Angeles, June 18-20, 1958. Reprinted from "Sta- tistical methods in radio wave propagation"

(Pergamon Press, Inc., New York, N. Y. , 1960).

3822. The compound BaTiGe3 09 , C. R. Robbins. J. Am. Ceram. Soc. 43, No. 11, 610 (Nov. 1960). 3823. The cosmic ray increase of July 17, 1959, D.

K. Bailey and M. A. Pomerantz. Can. J. Phys. 38, 332-333 (1960). 3824. The cryogenic data center, V. J. Johnson.

Proc. 1959 Cryogenic Eng. Conf . Book, Advances

in Cryogenic Engineering 5, Paper K-8, 566-574

(Plenum Press, Inc., New York, N. Y., 1960). 3825. The dependence of the melting temperature of- bulk homopolymers on the crystallization tem- perature, L. Mandelkern. J. Polymer Sci. 47, 494-496 (July 1960)

.

3826. The development of weights and measures control of packaged goods in the United States, W.

S. Bussey and M. W. Jensen. Supplement to The Monthly Rev. (April 1960). 3827. The dynamic compressibility of a rubber-sulfur vulcanizate and its relation to free volume,

J. E. McKinney, H. V. Belcher, and R. S. Marvin.

Trans. Soc. Rheology IV, 347-362 (1960). 3828. The electromagnetic fields of a dipole in the presence of a thin plasma sheet, J. R. Wait.

Appl. Sci. Research 8, Sect. B, No. 5-6, 397-

417 (1960). 3829. The error in prediction of F2 maximum usable frequencies by world maps based on sunspot number, E. L. Crow and D. H. Zacharisen. Book, Sta- tistical Methods in Radio Wave Propagation, Sec.

II, Radio Propagation Phenomology, p. 248 (Per- gamon Press, Inc., New York, N. Y., 1960). 3830. The excitation of He I in the solar spectrum.

R. G. and H. R. Johnson. Astrophys. J. 131, 413 (1960)

.

3831. The extent of H II regions, S. R. Pottasch. Astrophys. J. Note 132, No. 1, 269-271 (July 1960)

.

3832. The foundations of mechanics and thermodynamics, E. A. Kearsley and M. S. Green. Phys. Today 13, No. 7, 22-25 (July 1960).

3833. The Franck-Condon factor (q v

' v '') array to high vibrational quantum numbers for the 0

2

(B3S*-X32

g

) Schumann-Runge band system, R. W. Nicholls. Can. J. Phys. 38, 1705-1711 (1960). 3834. The (7, n) cross section of lead and bismuth,

E. G. Fuller and E. Hayward . Proc. Intern. Conf. on Nuclear Structure (Kingston, Canada), p. 941

(Aug. 1960).

3835. The heat of combustion of dicyanoacetylene

,

G. T. Armstrong and S. Marantz. J. Phys. Chem.

64, 1776-1777 (1960). 3836. The height of maximum luminosity in an au- roral arc, F. E. Roach, J. G. Moore, E. C. Bruner, Jr., H. Cronin, and S. M. Silverman. J. Geophys. Research 65, No. 11, 3575-3580 (Nov. 1960)

.

3837. The incidence equation AA Goldberg.

Am. Math. Mo. 67, 367 (1960). 3838. The influence of lowered permissible dose

levels on atomic energy operations in the United

States, L. S. Taylor. Progress in Nuclear Energy

1, 10 (1960). 3839. The infrared transmission of clouds, D. M. Gates and C. C. Shaw. J. Opt. Soc. Am. 50, No.

9, 876-882 (Sept. 1960). 3840. The intensity of Qoi] 5577 in the subauroral

region as a function of magnetic activity, F. E. Roach, J. Geophys. Research 65, No. 5, 1495

(1960) . 3841. The intermediate state structure and surface energy of mercury, C. A. Shiffman. Proc. Vllth

Intern. Conf. Low Temperature Physics, p. 208-

210 (University of Toronto, Canada, 1960).

3842. The ion pair-quadrupole equilibrium. Tetra- butylammonium bromide in methanol-benzene mixtures, K. H. Stern and E. A. Richardson. J. Phys. Chem. 64, 1901 (1960). 3843. The ionization constants of 2-chloro-4-nitrophenol and 2-nitro-4-chlorophenol , V. E. Bower

and R. A. Robinson. J. Phys. Chem. 64, 1078

(1960)

.

3844. The linear viscoelastic behavior of rubberlike polymers and its molecular interpretation,

R. S. Marvin. Book, Viscoelasticity : Phenomenological aspects, Chapt . 2, p. 27 (Academic Press,

Inc., New York, N. Y. , 1960).

3845. The magnetoionic phenomena permitting observation of valley minima between the E and F re- gions in the arctic, J. W. Wright. Proc. URSI- AGI Symp. (Brussels, Belgium, 1959), Book, Some Ionospheric Results Obtained During the IGY, Ed.

W. J. G. Beynon, p. 85 (Elsevier Publ. Co., Princeton, N. J., 1960).

3846. The measurement of thermal conductivity, D. C. Ginnings. Book, Thermoelectric Materials and Devices, Chapt. 8, p. 113-132 (Reinhold Publ. Corp., New York, N. Y. , 1960). 3847. The mechanical properties of ceramics and their measurement at elevated temperatures, S. J. Schneider. Book, Thermoelectricity, Chapt. 21, 342-357 (John Wiley and Sons, Inc., New York, N. Y., 1960).

3848. The melting temperature of natural rubber

networks, D. E. Roberts and L. Mandelkern. J. Am. Chem. Soc. 82, No. 5, 1091 (1960). 3849. The minima of cyclic sums, K. Goldberg. J. London Math. Soc. 35, 262-264 (1960). 3850. The NBS absolute gravity experiment, D. R. Tate. Proc. 2d AFCRC Military Geodesy Seminar, GRD Research Notes No. 40 (Jan. 12-14, 1960). 3851. The nation's electronic standards program: Where do we now stand? H. W. Kance. IRE Trans. Instrumentation 1-9, No. 2, 94-100 (Sept. 1960).

of the inorganic phase in calciV. S. Posner. Chapt. in "Calcifi373 (Washington,

3852. The n fied tissues, A. cation in Biolog: vancement of Sci

D. C, 1960). 3852A. The ninth plenary assembly of the CCIR,

J. W. Herbstreit. Proc. IRE 48, 45 (Jan. 1960). 3853. The organization of international intercom- parisons of radioactivity standards, with special reference to such measurements of NBS Stan

dards, L. M. Cavallo. Proc. Symp. Metrology of Radionuclides, IAEA, Vienna Austria, p. 117

(1960) .
3854. The outlook for machine translation, F. L. Alt. Proc. Western Joint Computer Conf., 1960, San Francisco, California, 17, 203 (1960). 3855. The physical environment as affected by ra- dation, D. M. Gates. Proc. 50th Anniversary

(University of Michigan, Ann Arbor, Mich., 1960).

3856. The power spectrum and its importance in precise frequency measurements, J. A. Barnes and R.

C. Mockler. IRE Trans. Instrumentation 1-9, No.

2, 194-195 (Sept. 1960). 3857. The precision measurement of transformer ratios, R. D. Cutkosky and J. Q. Shields. IRE Trans. Instrumentation 1-9, No. 2, 243-250 (Sept. 1960).

3858. The reaction of hydrogen atoms with solid propene at low temperatures, R. Klein, M. D. Scheer, and J. Waller. J. Phys. Chem. 64, 1247-

1250 (1960). 3858A. The reflection of logistics in electronic

computer design, E. W. Cannon. Proc. Logistics Research Conf., GWU , Naval Research Grant 7, No.

4, 365-371 (Dec. 1960). 3859. The relation between confidence intervals and tests of significance—a teaching aid, M. G. Natrella. Am. Stat. 14, No. 1, 20 (1960). 3860. The relation of hmaxF2 to m(3000)F2 and hpF2,

J. W. Wright and R. E. McDuffie. J. Radio Research (Japan) 7, No. 32, 409 (1960). 3861. The reproducibility of carbon resistance and helium vapor pressure measurements, H. H. Plumb,

M. H. Edlow, and G. H. Ca ta land . Proc . Xth Intern., Congress of Refrigeration, Copenhagen, Denmark,

1959, Book, Progress in Refrigeration in Science

and Technology I, 184-187 (Pergamon Press, Inc., London, England, 1960).

3862. The role of surface tensions in determining

certain clay-water properties, W. C. Ormsby.

Bull. Am. Ceram. Soc. 39, No. 8, 408-412 (Aug. 1960)

.

3863. The rotational constants of hydrogen chloride,

E. K. Plyler and E. D. Tidwell. Z. Elektrochemie

64, No. 5, 717-720 (Feb. 1960).

3864. The sample, the procedure, and the laboratory,

W. J. Youden. Anal. Chem. 32, No. 13, 23A-37A

(Dec. 1960). 3865. The sensitivity of photographic film to 3-Mev

neutrons and to thermal neutrons, M. Ehrlich. Health Phys. 4, No. 2, 113-128 (Dec. 1960).

3866. The simultaneous observation of radio star scintillations on different radio-frequencies,

H. J. A. Chivers. J. Atmospheric and Terrest.

Phys. 17, No. 3, 181-187 (1960). 3867. The solar spectrum from 2635 to 2985A, H. H. Malitson, J. D. Purcell, R. Tousey, and C. E. Moore, Astrophys. J. 132, 746 (1960). 3868. The source-function in a non-equilibrium at- mosphere: IV. Evaluation and application of the net radiative bracket, R. N. Thomas. Astrophys.

J. 131, 429 (1960). 3869. The source-function in a non-equilibrium at- mosphere: V. Character of the self -reversed emission cores of Ca+ H and K, J. T. Jefferies and

R. N. Thomas. Astrophys. J. 131, 695 (1960). 3870. The spark of originality, A. T. McPherson. Chemist XXXVII, No. 7, 275 (1960). 3871. The Stokes flow about a spindle, L. E. Payne

and W. H. Pell. Quart. Appl . Math. 18, 257-262

(1960) . 3872. The Stokes flow problem for a class of axially symmetric bodies, L. E. Payne and W. H. Pell.

J. Fluid Mech. 7, Pt. 7, 529 (1960).

3873. The strength of ten structural adhesives at temperatures down to -424°F, W. M. Frost. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper H-l , 375-384 (Plenum

Press, Inc., New York, N. Y. , 1960). 3874. The structure of 0,0' diethyl methylphosphonothioate and conjugative properties of the P=S

bond, H. Finegold. J. Am. Chem. Soc. 82, No. 10, 2641 (1960). 3875. The thermal and gravitational atmospheric os- cillations, ionospheric dynamo effects included,

M. L. White. J. Atmospheric and Terrest. Phys.

17, No. 3, 220 (1960). 3876. The thermal resistance of the indium alloys

in the intermediate state, K. Mendelssohn and C.

A. Shiffman. Proc. Roy Soc. A255, 199 (1960). 3877. The use of geo-stationary satellites for the study of ionospheric electron content and iono- spheric radio-wave propagation, O. K. Garriott

and C. G. Little. J. Geophys. Research 65, No.

7, 2025-2027 (July 1960). 3878. The use of polarization fading of satellite

signals to study the electron content and irreg- ularities in the ionosphere, C. G. Little and R.

S. Lawrence. Proc. COSPAR Space Symp. Pt . II (North Holland Publ . Co., Amsterdam, The Netherlands, 1960).

3879. The use of 2 , 2 , 4 , 4 , 6 , 8 , 8-heptamethylnonane

as a primary diesel fuel, T. W. Mears, R. M. David, and F. L. Howard. ASTM Bull. 245, 75

(1960)

.

3880. The Venturi tube as a liquef ied-gas flow measuring device, J. R. Purcell, A. F. Schmidt, and R. B. Jacobs. Proc. 1959 Cryogenic Eng. Conf.

Book, Advances in Cryogenic Engineering 5, Paper

F-2, 282-288 (Plenum Press, Inc., New York, N. Y. , 1960).

3881. The wavefront reversing interferometer, J. B. Saunders. Colloquium on Optics and Metrology, Sponsored by the Intern. Commission of Optics, Brussels, Belgium, May 8-9, 1958. Publ. in Optics

in Metrology, p. 227 (Pergamon Press, New York,

N. Y., 1960). 3881A. Theoretical dielectric behavior of an ethyl stearate-heneicosane mixture, M. G. Broadhurst. J. Chem. Phys. 33, No. 1, 221-226

(July 1960)

.

3882. Theory of anisotropic fluids, J. L. Ericksen.

Trans. Soc. Rheology IV, 29-39 (1960). 3883. Theory of flame propagation in solids at low temperatures, S. G. Reed and C. M. Herzfeld. J. Chem. Phys. 32, No. 1, 1 (1960). 3884. Theory of the magnetic and spectroscopic pro- perties of neptunium hexaf luoride , J. C. Eisenstein and M. H. L. Pryce. Proc. Roy. Soc. A255,

181 (1960). 3885. Thermal conductivity of condensed films: Methane, J. T. Clarke and R. Gorden, Jr. J. Chem. Phys. 32, 705 (1960). 3886. Thermal voltage converters for accurate voltage measurements to 30 megacycles per second, F.

L. Hermach and E. S. Williams. Commun. and Electronics 49, 200-206 (July 1960). 3887. Thermodynamic structure of the outer solar atmosphere. VI. Effect of departures from the Saha equation on infrared properties of the low chromosphere, S. R. Pottasch and R. N. Thomas. Astrophys. J. 132, No. 1, 195-201 (July 1960). 3887A. Time standards, A. G. McNish. Instr. and Control Systems 33, 1340-1341 (Aug. 1960).

301
1960

3888. Titanium (III) chloride and titanium (III) bromide (titanium trichloride and titanium tri- bromide), J. M. Sherfey. Book, Inorganic Synthesis by E. S. Rochow, Chapt. IV-b, Sect. 17, p. 57-61 (McGraw-Hill Book Bo., Inc., New York, N. Y. , 1960). 3889. Topological derivation of the Mayer density

series for the pressure of an imperfect gas, M.

S. Green. J. Math. Phys. 1, Np. 5, 391-394

(Sept. -Oct. 1960). 3890. Transfer of liquid hydrogen through uninsulated lines, R. J. Richards, W. G. Steward, and R. B. Jacobs. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper B-4

,

104-110 (Plenum Press, Inc., New York, N. Y., 1960)

.

3891. Transistor P-A amplifiers, G. F. Montgomery

and F. R. Bretemps. Electronic Indust. 19, No. 1, 196 (1960).

3892.. Trends in the technology of automatic data

processing, S. N. Alexander. AMA Report 41, 38-

42 (1960). 3892A. Triboluminescence in a mercury bubbler, L.

J. Schoen. Can. J. Phys. 38, 967-970 (1960). 3893. Tropospheric fields and their long-term var- iability as reported by TAS0, P. L. Rice. Proc.

IRE 48, 1021 (1960)

.

3894. Twilight spectra near the equator, H. N. Rundie. Ann. Geophys. 16, No. 1, 152-153 (Mar. (1960) . 3895. Two-oscillator scan stability, H. M. Joseph. AIEE Trans. 78, Pt . 1, 102 (Jan. 1960). 3896. Uber genaherte determinanten und bedingte tragheitsindizes , A. M. Ostrowski. Mont. Math,

u. Phys. 64, 51 (1960). 3897. Use of carbon resistors as low temperature

thermometers in the presence of stray rf fields,

E. Ambler and H. Plumb. Rev. Sci. Instr. 31, 656 (1960). 3898. Use of disodium m-benzenedisulf onate as a hardening agent in a Watts nickel bath, W. H. Metzger, Jr., P. A. Krasley, and F. Ogburn. Pla- ting 47, No. 3, 285 (1960). 3899. Use of the equation of hydrostatic equili- brium in determining the temperature distribution

in the outer solar atmosphere, S. R. Pottasch. Astrophys. J. 131, No. 1, 68 (1960). 3900. Use of the incoherent scatter technique to obtain ionospheric temperatures, T. E. VanZandt

and K. L. Bowles. J. Geophys. Research 65, No. 9, 2627-2628 (Sept. 1960). 3901. Vacuum chamber for the deposition of carbon

and shadow casting of metals (abstract), H. C. Vacher, H. C. Burnett, and R. H. Duff. J. Appl.

Phys. 31, 1836 (Oct. 1960). 3902. Valences of the elements in alalytical procedures, J. I. Hoffman. Chem.-Anal. 49, No. 1, 30 (1960). 3903. Vanadium oxytrichlor ide (vandyl (V) chloride)

Ft. B. Johannesen. Book, Inorganic Syntheses, Ed.-

in-Chief, E. G. Rochow, VI, Chapt. 5B, No. 38, 119-120 (McGraw-Hill Book Co., Inc., New York,

N. Y., 1960).

3904. Variational treatment of electron-hydrogen

atom elastic scattering, S. Geltmen. Phys. Rev.

119, No. 4, 1283-1290 (Aug. 15, 1960).

3905. Variations of surface tension calculated

with improved approximation for activity coefficient, L. C. Shepley and A. B. Bestul. J. Am. Ceram. Soc . 43, No. 7, 386-387 (July 1960).

3906. Vergleichmessungen mit intensitatsstandards

fur energiersiche bremsstrahlung (Comparison measurements of intensity standards for high energy bremsstrahlung), J. S. Pruitt and W. Pohlit.

Z. Naturforschung 15b, No. 9, 617-619 (1960). 3907. VLF attenuation for East-West and West-East

daytime propagation using atmospherics, W. L. Taylor. J. Geophys. Research 65, No. 7, 1933-

1938 (July 1960)

.

3908. VLF phase characteristics deduced from at- mospheric waveforms, A. G. Jean, W. L. Taylor,

and J. R. Wait. J. Geophys. Research 65, No. 3, 907 (1960). 3909. Vibration-rotation bands of ammonia. IV. The stretching fundamentals and associated bands near 3^, W. S. Benedict, E. K. Plyler, and E. D. Tidwell. J. Chem. Phys. 32, No. 1, 32 (1960). 3910. Vibration-rotation bands of N2

0, E. K. Plyler, E. D. Tidwell, and W. S. Benedict. J. Opt. Soc. Am. 50, No. 2, 1243-1263 (Dec. 1960).

3911. Vibrational transition probabilities of di- atomic molecules: Collected results IV, BeO, B0, CH+

, CO, NO, SH, 0

2

, 0+, R. W. Nicholls, P. A. Fraser, W. R. Jarmain, and R. P. McEachran. Astrophys. J. 131, 399 (1960). 3912. Water penetration testing machine for sole

leather, T. J. Carter. J. Am. Leather Chemists

Assoc. 55, No. 3, 139 (1960). 3912A. What has the missile age meant to the Bureau of Standards, A. V. Astin. Prod. Eng., p. 24 (May 23, 1960)

.

3913. What price accurate test methods, A. T. Mcpherson. ASTM Bull. ACR Notes Column, No. 244,

p. 7 (1960). 3913A. Widely separated clocks with microsecond

synchronization and independent distribution systems, T. L. Davis and R. H. Doherty, IRE WESCON

Conv. Pt. 5, p. 3-17 (1960). 3914. World maps of F2 critical frequencies and maximum usable frequency factors for use in making ionospheric radio predictions, D. H. Zacharisen and V. Agy. J. Geophys. Research 65, No. 2, 593 (1960). 3915. WWV time signal receiver, S. Saito and F. R. Bretemps. Electronic Ind. 19, No. 8, 214-216

(Aug. 1960). 3916. X-ray attenuation coefficients from 13 to 80 Mev for hydrogen, carbon, water, and aluminum,

J. M. Wyckoff and H. W. Koch. Phys. Rev. 117, No.

5, 1261 (1960). 3917. X-ray diffraction studies and their crystalchemical implications, H. S. Peiser. Book, For- mation and trapping of free radicals, Chapt. 9, p. 301 (Academic Press Inc., New York, N. Y.

,

1960)

.

3918. X-ray diffraction study of acellular teleost

bone, M. L. Moss and A. S. Posner. Nature 188, 1037 (Dec. 1960). 3919. Zuden Grundlagen der mechanik und thermodynamik, C. Truesdell. Physik. Bl . 16, No. 10, 512-517 (1960).

302
1961

3920. A century-old razor, S. J. Rosenberg. Metal

Progress 79, No. 6, 94-96 (June 1961).

3921. A comment on Ryser's "normal and integral

implies incidence" theorem, K. Goldberg. Am. Math. Mo. 68, No. 8, 770-771 (Oct. 1961). 3922. A comment on the NRL solar Lyman-Alpha results, J. T. Jefferies and R. N. Thomas. Astrophys. J. 133, No. 2, 606-607 (Mar. 1961).

3923. A comparison between theoretical and experimental data on phase velocity of VLF radio waves

J. R. Wait. Proc. IRE 40, No. 6, 1089-1090 (June 1961).

3924. A complementary symmetry emitter-follower,

0. B. Laug. Electro-Technol. 68, No. 6, 132-134

(Dec. 1961).

3925. A diffraction theory for LF sky-wave propagation, J. R. Wait. J. Geophys. Research 66, No.

6, 1713-1724 (June 1961); An additional note, J. R. Wait and A. M. Conda, J. Geophys. Research

66, No. 6, 1725-1729 (June 1961).

3926. A digital ray-tracing program for ionosphere

research, R. S. Lawrence and D. J. Posakony.

(Proc. Second Intern. Space Science Symp. , Florence, Italy, Apr. 10-14, 1961), Book, Space Re- search II, 258-276 (North Holland Publ. Co., Amsterdam, The Netherlands, Apr. 1961).

3927. A five-attribute system of describing visual

appearance, D. B. Judd. Am. Soc. Testing Materials Spec. Tech. Publ. 297, 1-15 (1916). 3928. A general description of D-C digital voltmeters, C. Stansbury. Am. Inst. Elec. Engrs

.

Trans. Paper No. 61-721 (Apr. 1961).

3929. A general junction-transistor equivalent

circuit for use in signal switching analysis, S. B. Geller, P. A. Mantek, and D. R. Boyle. IRE Trans. Electronic Computers EC-10, No. 4, 670-

679 (Dec. 1961).

3930. A high-resolution ammonia-maser-spectrum an- alyzer, J. A. Barnes and L. E. Heim. IRE Trans. Instrumentation 1-10, 4-8 (June 1961). 3931. A lattice with an unusual frequency spectrum, R. J. Rubin and R. W. Zwanzig. J. Math.

Phys. 2, No. 6, 861-864 (Nov. -Dec. 1961).

3932. A method for determining mechanical resonance frequencies and for calculating elastic moduli from these frequencies, S. Spinner and W.

E. Tefft. Am. Soc. Testing Materials Proc. 61, 1221-1238 (1961). 3933. A method for the study of vector velocity distribution of low density molecular beams, L. Marton, S. R. Mielczarek, and D. C. Schubert.

Book, Rarified Gas Dynamics, ed. L. Talbot, p. 61-65 (Academic Press, Inc., New York, N. Y .

,

1961)

.

3934. A new approach to the mechanical syntatic

analysis of Russian, I. Rhodes. Mech. Trans. 6, 33-50 (Nov. 1961).

3935. A nomograph for selecting light balancing

filters for camera exposure of color films, C.

S. McCamy. Med. and Biol. Illustration 11, No.

1, 13-15 (London, England, Jan. 1961).

3936. A note on normal matrices, M. Marcus and N. Kahn. Can. Math. Bull. 4, 23-27 (1961). 3937. A note on phase velocity of VLF radio waves,

J. R. Wait and K. P. Spies. J. Geophys. Research

66, No. 3, 992-993 (Mar. 1961).

3938. A nuclear magnetic resonance study of synanti isomerism in ketoximes, E. Lustig. J. Phys. Chem. 65, 491 (1961). 3939. A pH standard for blood and physiologic media

V. E. Bower, M. Paabo, and R. G. Bates. Clin.

Chem. 7, No. 3, 292 (1961). 303

3940. A recalibration of the NBS standard thermal neutron flux, E. R. Mosburg and W. M. Murphey. Reactor Sci. and Tech. J. Nuclear Eng. 14, Pt. A.

B, 25-30 (1961). 3941. A report on computer technology outside the United States, S. N. Alexander. Proc. Executive

Seminar on High Speed Calculators for the Solution of Naval Problems Report No. 1519, 45-90

(May 1961). 3942. A report on U.S. standards activity, H. L. Mason. Control Eng. 10, No. 8, 67-70 (Oct. 1961). 3943. A screening method for large informational

retrieval systems, R. T. Moore. Proc. Joint IRE- AIEE -ACM Computer Conf. 6.3, 259-274 (1961). 3944. A simple calibration technique for vibrating

sample and coil magnetometers, N. N. Frederick.

Proc. IRE 49, No. 9, 1449 (Sept. 1961).

3945. A simple low temperature specimen holder for

the Norelco X-ray dif f ractometer , D. K. Smith. Norelco Reporter VIII, No. 1, 11-12 (Jan. -Feb. 1961)

.

3946. A stainless steel for standard weights, S. J. Rosenberg and T. P. Royston. Materials Research

and Standards (ASTMBull.), 1, No. 1, 21 (Jan. 1961)

.

3947. A statistical study of ionospheric drifts measured by the radio star scintillation technique, H. J. A. Chivers. J. Atmospheric and Terrest. Phys. 21, 221-224 (1961). 3948. A statistical study of lower atmospheric ion- ospheric coupling, R. W. Knecht and N. MacDonald

J. Geophys. Res. 66, No. 10, 3187-3190 (Oct. 1961)

.

3949. A status report on ALGOL-60, J. H. Wegstein

and W. W. Youden. Datamation 7, 24-26 (Sept. 1961)

.

3950. A study of auroral coruscations, W. H. Campbell and M. H. Rees. J. Geophys. Research 66,

No. 1, 41-55 (Jan. 1961).

3951. A study of the chemical reactions in kilning

bone char, F. G. Carpenter and V. R. Deitz. Proc. 6th Tech. Session on Bone Char 1959, p. 321 (Bone Char Research Project Inc., Charlestown, Mass.,

1961)

.

3952. A study of the fluorescence of cellulosic

polymers, K. F. Plitt and S. M. Toner. J. Appl

.

Polymer Sci. 5, No. 12, 534-538 (Sept. -Oct. 1961)

.

3953. A system for generating "pronounceable" names using a computer, A. L. Leiner and W. W. Youden.

J. Assoc. Computing Mach. 8, No. 1, 97-103 (Jan. 1961)

.

3954. A technique for calculating infrared absorption by a regular band, L. R. Megill and P. M. Jamnick. J. Opt. Soc. Am. 51, 1294-1297 (Nov. 1961)

.

3955. A waveguide interpretation of "temperatelatitude spread f" on equatorial ionograms , M. L.

V. Pitteway and R. Cohen. J. Geophys. Res. 66, No. 10, 3141-3156 (Pet. 1961).

3956. Absence of an isotope effect in the fractional recrystallization of alpha-D-glucose-l-t , H.

S. Isbell, H. L. Frush, and N. B. Holt. Anal.

Chem. 33, 225-226 (Fe . 1961)

3957. Absolute magnetic susceptibilities by ThorpeSenftle method, G. A. Candela and R. E. Mundy.

Rev. Sci. Instr. Note 32, No. 9, 1056-1057 (Sept. 1961)

.
1961 210

3958. Absolute measurement of W for Po alpha particles in air, nitrogen and carbon dioxide, Z. Bay, P. A. Newman, and H. H. Selinger. Radiation

Research 14, No. 5, 551-565 (May 1961). 3959. Absorption of carbon dioxide by solution of 2-amino-2-(hydroxymethyl)-l, 3-propandediol , R.

G. Bates and H. B. Hetzer, Anal. Chem. 33, No. 9, 1285 (Aug. 1961). 3960. Absorption spectrum and magnetic properties

of osmium hexaf luoride , J. C. Eisenstein. J. Chem. Phys. 34, 310-318 (1961). 3961. Abstract shape recognition by machine. M. E. Stevens. Computers —Key to Total Systems Control —

Proc. Eastern Joint Computer Conf. 20, No. 1, 332-351 (Dec. 1961).

3962. Adsorption of nitrogen and argon on mineralogical graphite and diamond at 77 and 90°K, J. Lopez, F. G. Carpenter, and V. R. Deitz. J. Phys.

Chem. 65, No. 7, 1112-1119 (July 1961).

3963. Adsorption of polyesters and other polymers

to glass and other substrates, R. R. Stromberg

and G. M. Kline. Poliplasti 9, 15 (Jan. -Feb. • 1961); Modern Plastics 38, 123 (Apr. 1961); Modern Plastics 38, 241 (May 1961). 3964. Advances in orthonormalizing computation, P.

J. Davis and P. Rabinowitz. Advan. in Computers

II, 55-133 (1961). 3965. Age to indium resonance for D-D neutrons in heavy water, V. Spiegel, Jr., and A. C. B. Richardson. Nuclear Sci. and Eng. 10, No. 1, 11-15

(1961) . 3966. Algorithm and rapid binary division, R. S. Ledley and J. B. Wilson. IRE Trans. Electronic

Computers EC-10, No. 4, 662-670 (Dec. 1961). 3967. Amine buffers for pH control, R. G. Bates.

Ann. N. Y. Acad. Sci. 92, 341 (1961). 3968. An analysis of errors in the calibration of electric instruments, F. L. Hermach. Commun. and Electronics 54, 1-6 (May 1961).

3969. An experimental investigation of over-all

heat transfer coefficients for condensing and boiling hydrogen films, K. D. Timmerhaus , D. E. Drayer, and J. W. Dean. Intern. Develop. Heat Transfer (ASME) 2, 270-278 (1961) 3970. An experimental study concerning the pressurization and stratification of liquid hydrogen, A.

F. Schmidt, J. R. Purcell, W. A. Wilson, and R.

V. Smith. Proc. 1959 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 5, Paper J-6, 487-497 (Plenum Press, Inc., New York, N. Y.

,

1960) ; Revised version J. Research NBS 65C (Eng. and Instr.), No. 2, 81-87 (Apr. -June 1961).

3971. An improved structure determination for vinyl

fluoride, D. R. Lide, Jr., and D. Christensen.

Spectrochim. Acta 17, 665-668 (1961). 3972. An interf arometric instrument for the rapid measurement of small diameters, D. H. Blackburn.

Rev. Sci. Instr. 32, No. 2, 137 (Feb. 1961). 3973. An ultra-low frequency bridge for dielectric

measurements, D. J. Scheiber. 1960 Annual Report,

Conf. Electrical Insulation, Natl. Acad. Sci.-

Natl. Research Council, p. 1-10 (1961). 3974. Analysis of pyrolyzates of polystyrene and poly (methyl methacrylate) by gas chromatography,

F. A. Lehmann and G. M. Brauer. Anal. Chem. 33,

No. 6, 673-676 (May 1961).

3975. Analysis of the absorption spectrum of YbCl 3 . 6H2 0, J. C. Eisenstein. J. Chem. Phys. 35, No. 6, 2097-2100 (Dec. 1961).

3976. Apparatus for controlled slack quenching, N.

L. Carwile, M. R. Meyerson, and. S. J. Rosenberg.

Mater. Res. Std. 1, No. 7, 532-636 (July 1961).

3977. Application of the method of polarized orbitals to the scattering of electrons from hydrogen, A. Temkin and J. C. Lamkin. Phys. Rev. 121,

No. 3, 788-794 (Feb. 1, 1961).

3978. Applications of statistics in post office

automation, B. M. Levin and N. C. Severe Am. Stat. 15, No. 4, 14-18 (Oct. 1961).

3979. Approximate wide-range equation of state for hydrogen, R. D. Goodwin. Proc. 1960 Cryogenic

Eng. Conf. Book, Advances in Cryogenic Engineering 6, Paper G-4 , 450-456 (Plenum Press, Inc., New York, N. Y. , 1961)

.

3980. Arc source for high temperature gas studies,

J. B. Shumaker, Jr. Rev. Sci. Instr. 32, No. 1, 65-67 (Jan. 1961).

3981. Atomic beam frequency standards, R. C. Mockler. Adv. Electron, and Electron Phys. 15, 1-71

(1961) . 3982. Automatic screening of normal and abnormal electrocardiograms by means of a digital elec- tronic computer, H. V. Pipberger, R. J. Arms, and

F. W. Stallmann. Proc. Soc. Experimental Biology

and Medicine 106, 130-132 (1961). 3983. Availability of machine-usable natural lan- guage material, M. E. Stevens. Proc. Third Inst, on Information, Storage, and Retrieval, American

University, Wash. D. C, 1, 58-75 (Feb. 1961).

3984. Available heat sinks for protected underground installations, B. A. Peavy. Proc. Meeting

Environmental Engineering in Protective Shelters,

Feb. 8-10, 1960, Natl. Acad. Sci. -Natl. Research

Council, p. 69-118 (1961). 3985. Behavior and evaluation of rubber, R. D. Stiehler. Tech. Memo Am. Concrete and Pipe Assoc.

11 pages (Oct. 1, 1961). 3986. Best approximations am

tions, J. R. Rice. Trans. , 477-498 (Dec. 1961).

3987. Binary oxide systems, 1 5. Parker. Book, UO2, plications, Chapt. ernment Printing Offii 1961)

.

3988. Blue-glass filter: body at 6,500°K, D. B

1-4, 31 (1961). 3989. Calculations of property

flection systems, S. Penner. Rev. Sci. Instr. 32, No. 2, 150-160 (Feb. 1961).

3990. Calculations of the neutron age in water and heavy water for D-D sources, J. W. Cooper. Nu- clear Sci. and Eng. 10, No. 1, 1-10 (May 1961).

3991. Calibration of vibration pickups at large am- plitudes, E. Jones, S. Edelman, and K. S. Sizemore. J. Acoust. Soc. Am. 33, No. 11, 1462-1466

(Nov. 1961).

3992. Causes and measurement of walkway slipperiness, T. H. Boone and J. R. Smith. Natl. Acad.

Sci. -Natl. Res. Council 899, 1-26 (1961). 3993. Changes in dentures during storage in water

and in service, J. B. Woelfel, G. C. Paf fenbarger

,

and W. T. Sweeney. J. Am. Dental Assoc. 62, No.

6, 643-657 (June 1961)

.

3994. Characteristic electron energy loss measurements at low temperature, E. M. Horl and J. A. Suddeth. J. Appl. Phys. 32, No. 12 2521-2525

(Dec. 1961).

Hoekstra and H. Properties and Nuclear ApSect. 6, 271-304 (U.S. Gov

:e, Wash. , D. C. , Aug.

; to approximate the blackJudd. Die Garbe 10, No. lagnetic de304
1961

3995. Characterization of textile yarns for use under ballistic impact conditions, J. C. Smith. Proc . Symp. Personnel Armor, U.S. Naval Res. Lab- oratory I, 1-21 (Oct. 4-5, 1961).

3996. Chemical analysis of alum-coagulated SBR syn- thetic rubber by a complete solution procedure,

F. J. Linnig. Rubber Age 90, No. 3, 440-444 (Dec. 1961)

.

3997. Chemical projects, J. A. Young and J. K. Taylor. J. Chem. Ed. 38, 6 (1961). 3998. Chemical reactions at very low temperatures:

A rotating cryostat for mixing reactants at 4.2°K, A. Thomas. Trans. Faraday Soc. 57, Pt . 10.

No. 446, 1679-1685 (Oct. 1961).

3999. Circumferentially uniform electroplating of tube bores, J. P. Young and H. I. Salmon. Platting 48, No. 7, 783, 787-788 (July 1961).

4000. Coatings for refractory metals, formed by anodic treatment and by vapor deposition, V. A. Lamb and J. L. Sligh. Wright Air Devel. Ctr. Tech. Report 61-64, p. 1-20 (Sept. 1961).

4001. Color filter nomograph, C. S. McCamy. Soc. Photographic Sci. Eng. Letter 4, No. 2, 26 (Nov.

Dec. 1961).

4002. Comments on K. Vozoff's paper "Calibration of pulsation detector coils", J. R. Wait. J. Geophys

.

Res. 66, No. 10, 3603 (Oct. 1961).

4003. Comments on "plan for the self -qual if ication

of laboratories", A. T. McPherson. Mater. Res.

Std. 1, No. 9, 729-730, 733 (Sept. 1961).

4004. Comments on the use of net rate processes and

the equivalent two-level atom in non-LTE computations, R. N. Thomas. Ann. d'Astrophys. 23, No. 6, 871-878 (1961). 4005. Comparative pH measurements on papers by water extraction and glass electrode spot tests, J. H. Flynn and L. E. Smith. TAPPI 44, No. 3, 223-228

(Mar 1961).

4006. Comparison of four different methods of de- termining drying shrinkage of concrete masonry

units, J. 0. Bryson and D. Watstein. J. Am. Concrete Inst. 58, No. 2, 163-183 (Aug. 1961).

4007. Comparison of observed tropospheric refraction with values computed from the surface re- fractivity, B. R. Bean. IRE Trans Ant. Prop.

AP-9, No. 4, 415-416 (July 1961).

4008. Comparison of the ionization produced in air

by alpha particles near 5 Mev and by beta particles, Z. Bay and P. A. Newman. Radiation Research

14, No. 5, 566-572 (May 1961).

4009. Compton scattering by K-shell electrons, J. W. Motz and G. Missoni. Phys . Rev. 124, No. 5, 1458-1468 (Dec. 1961).

4010. Concerning radiosondes, lag constants, and

radio refractive index profiles, B. R. Bean and

E. J. Dutton. J. Geophys Res. 66, No. 11, 3717-

3722 (Nov. 1961).

4011. Concerning the bi-exponential nature of the tropospheric radio refractive index, B. R. Bean. Beitr. Phys. Atmos . 34, No. 1/2, 81-91 (1961). 4012. Concerning the potential refractive index and

the molecular ref ractivity , B. R. Bean and J. D. Horn. J. Meteorology 18, No. 3, 427-428 (June 1961).

4013. Conductance of solutions of water, acetic an- hydride, and acetyl chloride in acetic acid, T.

B. Hoover and A. W. Hutchison. J. Am. Chem. Soc.

83, No. 16, 3400-3405 (1961). 4014. Congruences for the partition function to composite moduli, M. Newman. Illinois J. Math 6, No. 1, 59-63 (Mar. 1961).

4015. Continuously operating He refrigerator for producing temperature down to 1/4°K, E. Ambler

and R. B. Dove. Rev. Sci. Instr. 32, No. 6, 737-

739 (June 1961)

.

4016. Control terminology—A report on U.S. Standards activity, H. L. Mason. Control Eng. 8, No.

10, 67-70 (Oct. 1961). 4017. Convective circulation in water induced by e- vaporative cooling, W. G. Spangenberg and W. R. Rowland. Phys. of Fluids 4, No. 6, 743-750 (June 1961)

.

4018. Correlation of visual and subvisual auroras with changes in the outer Van Allen radiation

zone, B. J. O'Brien, J. A. Van Allen, F. E. Roach, and C. W. Gartlein. IGY Bull. No. 45, 1-16

(Mar. 1961).

4019. Crack propagation and the fracture of concrete, M. F. Kaplan. J. Am. Concrete Inst. 58, No. 5, 591-609 (Nov. 1961).

4020. Cryogenics and nuclear physics, R. P. Hudson. Science 134, No. 3492, 1733-1736 (Dec. 1, 1961).

4021. Cryogenic adhesive properties of bisphenol-A

epoxy resins, M. J. Hiza and P. L. Barrick. SPE Trans. 1, 73-79 (Apr. 1961).

4022. Decibels return loss to magnitude of voltage reflection coefficient, R. W. Beatty. Microwave

Eng. Handb. and Buyer's Guide, p. TD 188-192

(Nov. 1961). 4023. Deep penetration of radiation (nuclear reactor theory), U. Fano and M. J. Berger. Proc.

Symp. Applied Mathematics, p. 43 (1961). 4024. Definitions relating to metals and metalworking, M. R. Meyerson and S. J. Rosenberg, Am.

Soc. Metals Handb. 1, 1-41 (1961). 4025. Degradation of poly- (2 , 3 , 4 , 5, 6-pentaf luorostyrene), L. A. Wall, J. M. Antonucci, S. Straus, and M. Tryon. Soc. Chem. Ind. Mono. No. 13, 295- 302 (Page Bros. Ltd., Norwich, England, 1961).

4026. Density fluctuations and heat conduction in

a pure liquid, R. E. Nettleton. Phys. of Fluids

4, No. 1, 74 (Jan. 1961). 4027. Departure from the Saha equation for ionized

helium. I. Condition of detailed balance in the resonance lines, R. N. Thomas and J. B. Zirker. Astrophys. J. 133, No. 2, 588-595 (Mar. 1961).

4028. Departure from the Saha equation for ionized

helium. II. Atmospheric thicknesses too small to satisfy detailed balance in the resonance lines,

R. N. Thomas and J. B. Zirker. Astrophys. J. 134, 740-746 (Nov. 1961). 4029. Deposition of metals from the vapour phase

and similarity of the process to electrodeposition, A. Brenner. Trans. Inst. Metal Finishing

38, No. 4, 123-130 (Aug. 1961).

4030. Deposition of iron from salts of f luoro-acids

,

J. H. Connor and V. A. Lamb. Plating 48, No. 4, 388-389 (Apr. 1961). 4031. Design of retarding field energy analyzers,

J. A. Simpson. Rev. Sci. Instr. 32, No. 12, 1283-

1293 (Dec. 1961). 4032. Determination of carboxyl in cellulose—com- parison of various methods, W. K. Wilson and J. Mandel. TAPPI, ACS-ASTM-ICCA subcommittee on determination of carboxyl, TAPPI 44, No. 2, 131 (1961). 4033. Determination of wax in paper, W. L. Morrow. TAPPI 44, No. 2, 120 (1961). 4034. Determination of crystallite size distribution from X-ray line broadening, A. Bienenstock.

J. Appl. Phys. 32, No. 2, 187-189 (Feb. 1961).

305
1961

4035. Development directions to keep leather apace,

J. Ft . Kanagy. Leather and Shoes 142, 34-3 5 (Aug.

12, 1961).

4036. 5, 6-dichloro-2-benzoxazolinone as a leather

fungicide, S. Dahl and A. M. Kaplan. J. Am. Leather Chemists Assoc. 56, No. 12, 686-698

(Dec. 1961).

4037. Diffusion in a chemical concentration gradient, J. R. Manning. Phys . Rev. 124, No. 2, 470-

482 (Oct. 15, 1961).

4038. Dielectric properties of polyamides, A. J. Curtis. J. Chem. Phys. 34, No. 5, 1849-1850 (May 1961)

.

4039. D-C differential current meter, E. Niesen.

Rev. Sci. Instr. 32, No. 12, 1407-1408 (Dec. 1961)

.

4040. Diode source book, C. P. Marsden. Semicond.

Prod. p. 41-117 (Aug. 1961).

4041. Dislocations and stacking faults in aluminum

nitride, P. Delavignette , H. B. Kirkpatrick, and

S. Amelinckx. J. Appl. Phys. 32, No. 6, 1098-

1100 (June 1961)

.

4042. Dissociation constant of the protonated acid form of 2-amino-2-(hydroxymethyl)-l , 3-proponediol

[tr is (hydroxymethyl) aminomethane] and related thermodynamic quantities from 0 to 50°, R. G. Bates and H. B. Hetzer. J. Phys. Chem. 65, 667-

671 (1961). 4043. Dynamic behavior of a simple pneumatic pressure reducer, D. H. Tsai and E. C. Cassidy. J. Basic Eng. Series D, 83, No. 2, 253-264 (June 1961)

.

4044. Early history of fire endurance testing in the United States, H. Shoub. Am. Soc. Testing

Materials Spec. Tech. Publ. 301, 1-9 (Oct. 1961).

4045. Effect of branching on the thermal decomposition of polymers, L. A. Wall. Soc. Chem. Ind. Mono. No. 13, 146-162 (Page Bros. Ltd., Norwich, England, . 1961)

.

4046. Effect of crystal growth on the comparative

fixation of Sr89 and Ca45 by calcified tissues,

R. C. Likins, A. S. 'Posner, B. Paretzkin, and A.

P. Frost. J. Biol. Chem. 236, No. 10, 2804-2806

(Oct. 1961).

4047. Effect of departures from local thermodynamic equilibrium on inferences of stellar atmospheric

temperatures, R. N. Thomas. Book, Optical Spec- trometry Measurements of High Temperatures, Ed.

P. J. Dickerman, P. 14-26 (University of Chicago

Press, Chicago, 111., 1961).

4048. Effect of gamma radiation on chemical structure of plastics, V. J. Krasnansky, B. G. Achhammer, and M. S. Parker. SPE Trans. 1, 133-138

(July 1961).

4049. Effect of mercury-alloy ratio on the physical

properties of amalgams, W. T. Sweeney and C. L. Burns. J. Am. Dental Assoc. 63, No. 9, 374-381

(Sept. 1961).

4050. Effect of molecular oxygen on the emission

spectra of atomic oxygen-acetylene flames, S. L.

N. G. Krishnamachari and H. P. Broida. J. Chem.

Phys. 34, 1709-1711 (1961). 4051. Effect of oleophobic films on fatigue crack propagation, W. L. Holshouser and H. P. Utech.

Am. Soc. Testing Materials Proc. 61, 749 (1961). 4052. Effectiveness of some powdered materials in extinguishing hydrocarbon fires, T. G. Lee and

A. F. Robertson. Natl. Acad. Sci. -Natl. Research

Council Publ. 786, 93-112 (June 1961).

4053. Effects of configuration interaction on in- tensities and phase shifts, U. Fano. Phys. Rev.

124, No. 6, 1866-1878 (Dec. 1961).

4054. Elastomers for static seals at cryogenic

temperatures, D. H. Weitzel, R. F. Robbins, G. R. Bopp, and W. R. Bjorklund. Proc. 1960 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 6, Paper D-6, 219-227 (Plenum Press,

Inc., New York, N. Y. , 1961). 4055. Electrical conduction in p-type titanium

sesquioxide, J. Yahia and H. P. R. Frederikse.

Phys. Rev. 123, No. 4, 1257-1261 (Aug. 1961).

4056. Electrodeposition of metals from nonaqueous

media, A. Brenner. Chapt . Encyclopedia of Chemistry and Technology 2d Suppl., p. 315-324 (In- terscience Encyclopedia, New York, N. Y. , Jan. 1961)

.

4057. Electrodes for pH measurements, R. G. Bates.

J. Electromagnetic Chem. 3, 93 (1961). 4058. Electromagnetic bearings, H. Sixsmith. Rev.

Sci. Instr. 32, 1196-1197 (Niv, 1961).

4059. Electron diffraction studies on solid a-nitrogen, E. Horl and L. Marton. Acta Cryst. 14,

Pt. 1, 11-19 (Jan. 1961).

4060. Electron energy losses in solids and their influence on the electron diffraction diagram,

L. Marton. J. Phys. Soc. Japan 17, Suppl. B-II, 68-73 (1961). 4061. Electron interferometer studies of iron whiskers, H. A. Fowler, L. Marton, J. A. Simpson,

and J. A. Suddeth. J. Appl. Phys. 32, No. 6, 1153 (June 1961)

.

4062. Electron spin resonance spectra of free ra- dical intermediates formed by reaction of polystyrene with atoms of hydrogen and deuterium,

R. B. Ingalls and L. A. Wall. J. Chem. Phys. 35, No. 1, 370-371 (July 1961). 4063. Electron spin resonance studies of gamma-irradiated small molecules at 4°K and 77°K, R. E. Florin, D. W. Brown, and L. A. Wall. Proc. Fifth

Intern. Symp. Free Radicals Paper No. 18, 1-17 (Almquist and Wiksell, Stockholm, Sweden, July

6-7, 1961).

4064. Electronic development and production in the USSR, C. P. Marsden. Encyclopedia of Russia and

the Soviet Union, p. 158-160 (McGraw-Hill Book

Co. Inc., New York, N. Y. , 1961).

4065. Elementary statistical design, W. J. Youden.

Conf. Applications of Statistical Methods in the Chemical Industry, Feb. 4, 1961, (Sponsored by

Am. Soc. for Quality Control, Metropolitan Section, Seaton Hall University, South Orange, N. J.), p. 43 (1961). 4066. Emission spectra of solids condensed at very

low temperatures from the electrical discharge

products of nitrogen and carbon monoxide or acetylene, S. L. N. G. Krishnamachari, R. W. Nicholls, and H. P. Broida. Proc. Indian Acad. Sci.

LIV, 61-68 (1961). 4067. Energy levels and magnetic dipole transitions in the 4p4 ground configuration of singly

ionized atomic bromine (Br II), W. C. Martin and

J. L. Tech. J. Opt. Soc. Am. 51, No. 6, 591-594

(June 1961)

.

4068. Environmental chemistry, F. W. Reinhart. Prevention of Deterioration Center Newsletter

(Natl. Acad. Sci. -Natl. Research Council) V, No. 1-2, 4 (Oct. 1961).

306
1961

4069. Erratum: Magnetic properties and optical ab- sorption spectrum of K2ReClg, J. C. Eisenstein.

J. Chem. Phys. 35, No. 6, 2246 (Dec. 1961).

4070. ESR observations of the rates of formation

and reaction of free radicals produced by hydrogen atom bombardment of polystyrene, R. B. In- galls and L. A. Wall. Fifth Intern. Symp. Free

Radicals Paper No. 25, 1-8 (Almquist and Wiksell,

Stockholm, Sweden, July 6-7, 1961).

4071. Evaluating the f reezing-and-thawing durability of concrete by laboratory tests in the U.

S. A., H. T. Arni and R. L. Blaine. Symp. Dura- bility of Concrete of RILEM, Prague, Czechoslovakia, p. 218-231 (July 1961).

4072. Evaluation of micrometer and microscopical

methods for measuring thickness of floor coverings, E. Horowitz, J. Mandel , R. J. Capott, and

T. H. Boone. Materials Research and Standards (ASTMBull.), 1, No. 2, 99-102 (Feb. 1961).

4073. Evaluation of resistance strain gages at elevated temperatures, R. L. Bloss. Materials Research and Standards (ASTM Bull.), 1, No. 1, 9-15 (Jan. 1961).

4074. Evaluation of the nature of the surfaces of hard tooth tissues by a surface activity test,

R. L. Bowen. Proc. Workshop on Adhesive Restorative Dental Materials (Indiana Univ., Bloomington, Ind., Sept. 28-29, 1961).

4075. Evaluation of the special world interval program during the IGY, M. E. Nason. J. Geophys

.

Res. 66, No. 10, 3597-3598 (Oct. 1961).

4076. Evidence on the laminar nature of the exosphere obtained by means of guided high-frequency wave propagation, R. M. Gallet and W. F. Utlaut. Phys. Rev. Letters 6, No. 11, 591-594

(June 1 , 1961)

.

4077. Unassigned.

4078. Exact and approximate distributions for the Wilcoxon statistic with ties, S. Y. Lehman. J. Am. Stat. Assoc. 56, 293-298 (June 1961).

4079. Excess noise in microwave detector diodes,

J. J. Faris and J. M. Richardson. IRE Trans. Microwave Theory Tech. MTT-9, No. 4, 312-314

(July 1961).

4080. Exosphere —observation on the medium and the phenomena of low energies (a lecture series,

Paris, Dec. 1959, 2 volumes in French), R. M. Gallet. Vol. I, 144 pages; Vol. II, 84 pages, Note Tech. No. PS 4102 (Centre Natl. Etudes Tel- ecommunications, Paris, France, Feb. 1961).

4081. Expected influence of a localized change of ionosphere height on VLF propagation, J. R. Wait.

J. Geophys. Res. 66, No. 10, 3119-3123 (Oct. 1961)

.

4082. Experimental design and ASTM committees, W.

J. Youden. Mater. Res. Std. 1, 862-867 (Nov. 1961)

.

4083. Experimental study of the stark broadening

of the Balmer line Hy

, W. L. Wiese, D. R. Paquette, and J. E. Solarski. Proc. Fifth In- tern. Conf . Ionization Phenomena in Gases, Munich, Germany, p. 907-912 (North Holland Publ.

Co., Amsterdam, The Netherlands, 1961).

4084. Exponential temperature dependance of Young's modulus for several oxides, J. B. Wachtman, Jr., W. E. Tefft, D. G. Lam, Jr., and W. S. Epstein. Phys. Rev. 122, No. 6, 1754-1759 (June 1961)

.

4085. Extension of the Flory-Rehner theory of swelling to an anisotropic system, S. D. Bruck. J. Polymer Sci. 55, 2931 (Dec. 1961). 4085A. f/6 Littrow grating spectrograph, J. P. Fallona, H. I. S. Ferguson, and R. W. Nicholls.

J. Opt. Soc. Am. 51, 353 (1961). 4086. Federal test methods standards, F. W. Reinhart. SPE J. 17, 1291-1297 (Dec. 1961). 4087. Fibrous silica, W. Haller. Nature 191, No. 4789, 662-663 (Aug. 12, 1961). 4088. Field emission from niobium in the normal

and superconducing states, R. Klein and L. Leder.

Phys. Rev. 124, No. 4, 1050-1052 (Nov. 1961).

4089. First pulsed radio soundings of the topside

of the ionosphere, R. W. Knecht, T. E. VanZandt, and

S. Russell. J. Geophys. Res. 66, No. 9, 3078-3082

(Sept. 1961).

4090. Fitting refractive index data by least squares, L. E. Sutton and 0. N. Stavroudis. J. Opt. Soc. Am. 51, No. 8, 901-905 (Aug. 1961). 4091. For a unified grain-size standard, L. L. Wyman and P. E. Penrod. Mater. Res. Std. (ASTM Bull.) 1, No. 8, 638 (Aug. 1961).

4092. Formulae for an accurate intermediary orbit

of an artificial satellite, J. P. Vinti. Astron.

J. 66, No. 9, 514-516 (Nov. 1961). 4093. Four-place table decibels return loss to magnitude of voltage reflection coefficient, R. W. Beatty. Microwave Eng. Handb. and Buyers Guide,

p. TD188-192 (Nov. 1961).

4094. Fracture characteristics of notched tensile specimens of titanium and titanium alloy, G. W. Geil and N. L. Carwile. Materials Research and Standards (ASTMBull.), 1, No. 1, 16-21 (Jan. 1961)

.

4095. Franck-Condon factors and the shape of ioni- zation efficiency curves, M. E. Wacks and M. Krauss. J. Chem. Phys. 35, No. 5, 1902-1903

(Nov. 1961).

4096. y -irradiation of liquid and solid oxygen, D. W. Brown and L. A. Wall. Phys. Chem. 65, 915

(1961). 4096A. Gas thermometer, L. A. Guildner. Encyclopaedic Dictionary of Physics, pp. 405-406 (Pergamon

Press Inc., New York, N. Y., 1961). 4097. Gas thermometry, L. A. Guildner. Dictionary

of Physics 3, 405-406 (Pergamon Press, Inc., New

York, N. Y., 1961).

4098. General description of D-C digital voltmeters,

C. Stansbury. AIEE Trans. Pt. I. Commun . and Electronics 80, No. 57, 465-470 (Nov. 1961).

4099. Geomagnetic and solar data, J. V. Lincoln. J. Geophys. Res. 65, 7 (1960); 66, 6 (1961). 4100. Ground conductivity determinations at low radio-frequencies by an analysis of the sferic signatures of thunderstorms, J. R. Johler and C. M. Lilley. J. Geophys. Res. 66, No. 10, 3233-

3244 (Oct. 1061). 4101. Group theory and crystal field theory, C. M. Herzfeld and P. H. E. Meijer. Book, Solid State

Physics 12, 1-91 (Academic Press, Inc., New York,

N. Y., 1961).

4102. Growth rates of zinc crystals from the vapor

phase, R. L. Parker and L. M. Kushner. J. Chem.

Phys. 35, No. 4, 1345 (Oct. 1961).

4103. Half-life of carbon-14 , W. B. Mann, W. F. Marlow, and E. E. Hughes. Intern. J. Appl. Radiation and Isotopes 11, 57-61 (1961).

307
1961

4104. Hearing by bone conduction, E. L. R. Corliss,

E. L. Smith, and J. 0. Magruder. Proc. Third In- tern. Congress on Acoustics I, 53-55 (Elsevier

Publ. Co., Amsterdam, The Netherlands, 1961).

4105. Heats and volumes of mixing in several C12 hydrocarbon systems, R. S. Jessup and C. L. Stanley. J. Chem. Eng. Data 6, No. 3, 368-371 (July

1961)

.

4106. How to determine stack load limits, R. S. Wyly. Contractor, p. 19-20 (Aug. 15, 1961).

4107. How to evaluate accuracy, W. J. Youden. Materials Research and Standards (ASTM Bull), 1, No. 4, 268-271 (Apr. 1961). 4108. Humidity standards, A. Wexler. TAPPI 44, No.

6, 180a (June 1961).

4109. Hydrogen atom reactions with propane at 77°K. Disproportionation and recombination, R. Klein and M. D. Scheer. J. Phys . Chem. 65, 324- 325 (1961). 4110. Hyperfine structure and isotope shifts in the 2537A line of mercury, W. G. Schweitzer. J. Opt.

Soc. Am. 51, No. 6, 692-693 (June 1961).

4111. Hydrogen sulfide precipitation of the elements from 0.2-0.5 normal hydrochloric acid, J.

I. Hoffman. Chem. -Anal. 50, No. 1, 30 and 32

(Mar. 1961).

4112. Idnetif ication of fiber blends by infrared

spectroscopy, M. K. Wharton and F. H. Forziati.

Am. Dyestuffs Reptr. 50, No. 14, 33-36 (July 10, 1961)

.

4113. Image gloss test: apparatus and procedure,

W. N. Harrison. Proc. PEI Forum 23, 154-163

(Nov. 1961).

4114. Immiscibility and the system lanthanium ox- ide-boric oxide, E. M. Levin, C. R. Robbins, and

J. L. Waring. J. Am. Ceram. Soc. 44, No. 2, 87-

91 (Feb. 1961).

4115. Improved electron filter lens, J. A. Simpson

and L. Marton. Rev. Sci. Instr. 32, No. 7, 802-

803 (July 1961)

.

4116. Improved standards for the calibration of vi- bration pickups, R. R. Bouche. Exp. Mech. 1, No.

4, 116-121 (Apr. 1961). 4117. Improvement of some of the properties of sole leathers by impregnation with polymers, J. R. Kanagy. J. Am. Leather Chemists Assoc. 56, No. 7, 322-342 (July 1961). 4118. Improving rectifier circuits, G. F. Montgomery. Electronics 34, No. 14, 88 (Apr. 7, 1961)

.

4119. Impurity effects in high purity metal, L. L. Wyman and G. A. Moore. (Symp. Major Effects of Minor Constituents on the Properties of Materials. Sixty-Fourth Annual Meeting ASTM, Atlantic

City, N. J., June 26, 1961) Am. Soc. Testing Ma- terials Spec. Tech. Publ. No. 304 —ASTM Materials

Sci. Series 2, 3-16 (June 26, 1961).

4120. Increase of ionization associated with geo- magnetic sudden commencements, S. Matsushita. J. Geophys. Res. Letter to Editor 66, No. 11, 3958-

3961 (Nov. 1961). 4121. Indices of solar activity, C. S. Warwick and

R. G. Athay. Advances in Geophys. 8, 1-2, 83 (Academic Press, Inc., New York, N. Y. , 1961).

4122. Inert enclosed pump for shaped flow of ultra-clean solutions, M. W. Barnes and R. H. Noyce. Rev. Sci. Instr. 32, No. 3, 353 (Mar. 1961)

.

4123. Infrared spectra of carbon monoxide as a solid and in solid matrices, A. G. Maki. J. Chem. Phys. 35, No. 3, 931-935 (Sept. 1961).

4124. Infrared spectrum and structure of the NF^

radical, M. D. Harmony, R. J. Myers, L. J. Schoen, D. R. Lide, Jr., and D. E. Mann. J. Chem. Phys. 35, No. 3, 1129-1130 (Sept. 1961).

4125. Infrared spectrum of acetylene, T. A. Wiggens, E. K. Plyler, and E. D. Tidwell. J. Opt.

Soc. Am. 51, No. 11, 1219-1225 (Nov. 1961).

4126. Integrated starlight over the sky, F. E. Roach and L. R. Megill. Astrophys. J. 133, No.

1, 228-242 (Jan. 1961). 4127. International coordination of measurement,

A. G. McNish. Sci. Math. Weekly 2, No. 3, 28-29

& 35 (Sept. 1961). 4128. International geophysical calendar for 1961,

A. H. Shapley. J. Radio Research Laboratories

(Japan) 7, No. 33, 545-548 (Sept. 1960); Natl. Acad. Sci. -Natl. Research Council IGY Bull. No.

42, 6-10 (Dec. 1960); Trans. AGU 41, No. 4, 722-

726 (Dec. 1960); IUGG Chronicle No. 33, 272-275

(Dec. 1960); CIG News No. 3, 80-83 (Dec. 1960); Science 132, No. 3444, 1941-1943 (Dec. 30, 1960);

J. Geophys. Res. 66, No. 1, 336-339 (Jan. 1961); Nature No. 4758, 9-11 (Jan. 7, 1961); World Me- teorological Organization Bull. X, No. 1, 47-50

(Jan. 1961); J. Atmospheric and Terrest. Phys.

20, No. 1, 72-76 (Feb. 1961).

4129. Interpretation of the appearance potentials

of secondary ions, M. B. Wallenstein and M. Krauss. J. Chem. Phys. 34, No. 3, 929-936 (Mar. 1961)

.

4130. Interpreting preliminary measurements, W. J. Youden. Mater. Res. Std. (ASTM Bull.) 1, No. 12, 987, 991 (Dec. 1961). 4131. Intramolecular rearrangements. I. Sec-butyl

acetate and sec-butyl formate, R. Borkowski and

P. J. Ausloos. J. Am. Chem. Soc. 83, No. 5, 1053-

1056 (Mar. 1961). 4132. Intramolecular rearrangements. II. Photolysis

and radiolysis of 4-methyl-2-hexanone, P. J. Ausloos. J. Phys. Chem. 65, No. 9, 1616-1618

(1961). 4133. Intramolecular rearrangements. III. Formation

of 1-methyl-cyclobutanol in the photolysis of 2- pentanone, P. J. Ausloos and R. E. Rebbert. J. Am. Chem. Soc. 83, 4897-4899 (1961). 4134. Intramolecular rearrangements. IV. Photolysis

of 2-pentanone-4, 5, 5-d3, R. P. Borkowski and P.

J. Ausloos. J. Phys. Chem. 65, No. 12, 2257-2260

(1961)

.

4135. Introductory remarks, U. Fano. Conf . Elec- tromagnetic Radiation, AFOSR 583, 31-38 (Uni- versity of Rochester, Inst, of Optics, Rochester,

N. Y., Apr. 1961). 4136. Unassigned.

4137. Investigation of bond in beam and pullout specimens with high-yield-strength deformed bars,

R. G. Mathey and D. Watstein. J. Am. Concrete

Inst. 32, No. 9, 1071-1090 (Mar. 1961). 4138. Ionospheric absorption at times of auroral

and magnetic pulsations, W. H. Campbell and H. Leinbach. J. Geophys. Research 66, No. 1, 25-34

(Jan. 1961).

4139. Ionospheric "Forward" scattering, D. K. Bailey. Proc. XHIth Gen. Assembly of URSI

(London, England, 1960), Natl. Acad. Sci. -Natl. Research Council Publ. Report No. 880, 281 (1961).

308
1961

4140. Kinetic equation for plasmas with collective

and collisional correlations, C. M. Tchen. Proc

.

Fifth Intern. Conf. Ionization Phenomena in Gases, Munich, Germany, p. 825-841 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1961).

86 .... 198

4141. Kr and atomic-beam-emitted Hg wavelengths, R. L. Barger and K. G. Kessler. J. Opt.

Soc. Am. 51, No. 8, 827-829 (Aug. 1961). 4141A. Letter to the Editor of Revue des Materiaux

(Second), H. A. Berman and E. S. Newman. Rev. Materiaux No. 548, 262-264 (May 1961).

4142. Liesegang rings, K. H. Stern. Encyclopedic

Dictionary of Physics IV, 276 (Pergamon Press,

Inc., New York, N. Y . , 1961).

4143. Limitations of radiosonde punch-card records

for radiometeorological studies, B. R. Bean and

B. A. Cahoon. J. Geophys. Research 66, No. 1, 328-331 (Jan. 1961). 4144. Line shape of ultraviolet absorption in solid

noble gases, P. H. E. Meijer. J. Chem. Phys . 34, 2078-2082 (1961). 4144A. Liquefied gases, handling of, R. B. Scott. Encyclopaedic Dictionary of Physics 4, 329-330

(Pergamon Press Inc., New York, N. Y. , 1961).

4145. Liquid drop collisions, 0. G. Engel. Symp. Erosion and Cavitation, Am. Soc. Testing Materials Spec. Tech. Publ. 307, 3-16 (1961). 4145A. Liquid air, R. B. Scott, Encyclopaedic Dictionary of Physics 4, 330 (Pergamon Press Inc., New York, N. Y. , 1961)

.

4146. Liquid helium vapor pressure regulator, G.H. Cataland, M. H. Edlow, and H. H. Plumb. Rev. Sci. Instr. 32, No. 8, 980-982 (Aug. 1961).

4147. Liquid-in-glass thermometers, J. R. Swindells. Inst, and Control Systems 34, 846 (1961). 4148. Lithium, M. R. Meyerson. Am. Soc. Metals

Handb. 1, 1213 (1961). 4149. Unassigned.

4150. Long-distance one-hop F^ propagation through

the auroral zone, L. H. Tveten. J. Geophys. Res.

66, No. 6, 1683-1684 (June 1961).

4151. Long-term working stress of thermoplastic

pipe, F. W. Reinhart. SPE J. 17, 751-754 (Aug. 1961).

4152. Lorentz corrections in rutile, R. A. Parker.

Phys. Rev. 124, No. 6, 1713-1719 (Dec. 1961).

4153. Low-angle X-ray diffraction of crystalline non-oriented polyethylene and its relation to crystallization mechanisms, L. Mandelkern, A. S. Posner, A. F. Diorio, and D. E. Roberts. J. Appl

.

Phys. 32, No. 8, 1509-1517 (Aug. 1961).

4153A. Low-temperature apparatus, constructional

materials for, R. B. Scott, Encyclopaedic Dictionary of Physics 4, 357-358 (Pergamon Press

Inc., New York, N. Y. , 1961).

4154. Low temperature thermometry, R. P. Hudson.

Book, Experimental Cryophysics, Chapt. 9, 214-

253 (Butterworth and Co., London, England, 1961).

4155. Low-temperature thermocouple thermometry, R.

L. Powell, M. D. Bunch, and L. P. Caywood . Proc. 1960 Cryogenic Eng. Conf. Book, Advances in Cry- ogenic Engineering 6, Paper H-6, 537-541 (Plenum

Press, Inc., New York, N. Y., 1961).

4156. Low-temperature thermocouples. I. Gold-cobalt

L. Powell, M. D. Bunch, and R . J. Corruccini. Cryogenics 1, 139-150 (Mar. 1961). 4157. Lower bounds for eigenvalues of Schrodinger '

s

equation, N. W. Bazley and D. W. Fox. Phys. Rev.

124, No. 2, 483-492 (Oct. 1961).

4158. Magnetic field micropulsations and electron

bremsstrahlung, W. H. Campbell. J. Geophys. Res.

66, No. 10, 3599-3600 (Oct. 1961).

4159. Magnetic properties and optical absorption

spectrum of KgReClg, J. C. Eisentstein. J. Chem.

Phys. 34, No. 5, 1628-1646 (May 1961). 4160. Magnetic susceptibility of cerous magnesium

nitrate, R. P. Hudson and W. R. Hosier. Phys.

Rev. 122, No. 5, 1417-1420 (June 1961).

4161. Magnifications of a telescope, R. E. Stephens. J. Opt. Soc. Am. 51, No. 7, 803-804

(July 1961)

.

4162. Mass spectrometric study of cyanogen and cy- anoacetylenes, V. H. Dibeler, R. M. Reese, and

J. L. Franklin. J. Am. Chem. Soc. 83, 1813-1818

(1961)

.

4163. Mass spectrometric study of the thermal dis- sociation of N2F4

, J. T. Herron and V. H. Dibeler.

J. Chem. Phys. 35, No. 2, 747-748 (Aug. 1961).

4164. Matrix elements in the forbidden beta decay

of Ce141 , D. D. Hoppes, E. Ambler, R. W. Hayward,

and R. S. Daeser. Phys. Rev. Letters 6, 115-118

(1961) . 4165. Maxwell and modern color imetry, D. B. Judd.

J. Photographic Sci. 9, No. 6, 341-352 (Nov.-

Dec. 1961).

4166. Measurement characteristics of farm milk

tanks, M. W. Jensen. Scale J. p. 4-5, 8-9 (Oct. 1961)

.

4167. Measurement of contrast in the aerial image,

F. W. Rosberry. Photogrammetric Eng. 27, 155-159

(Mar. 1961). 4168. Measurement of effect of moisture on heat transfer through insulated flat-roof constructions, F. J. Powell and H. E. Robinson. ASTM

Spec. Tech. Publ. 312,35-66 (1961). 4169. Measurement of minority carrier lifetime in SiC by a novel electroluminescent method, G. G. Harman and R. L. Raybold. J. Appl. Phys. 32, No.

6, 1168-1169 (June 1961). 4170. Measurement of the structure of strong shocks

in helium-filled T tubes, W. L. Wiese, H. F. Berg, and H. R. Griem. Phys. of Fluids 4, 250 (1960). 4171. Measurement of the transition probability of the 0 I multiplet at 6157A, W. L. Wiese and J. B. Shumaker, Jr. J. Opt. Soc. Am. 51, No. 9, 937-

942 (Sept. 1961). 4172. Measuring the instability of resistance

strain gages at elevated temperatures, R. L. Bloss and J. T. Trumbo. Instr. Soc. Am. Conf. Paper No. 161-LA-61, 1 (Sept. 1961).

4173. Mechanical properties of four austenitic

stainless steels at temperatures between 300° and

20°K, C. J. Guntner and R. P. Reed. Proc. I960 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 6, Paper J-l , 565-576 (Plenum Press,

Inc., New York, N. Y. , 1961). 4174. Memory effects in irreversible thermodynamics,

R. W. Zwanzig. Phys. Rev. 124, No. 4, 983-992

(Nov. 15, 1961). 4175. Methods and techniques of low and very low frequency monitoring at Boulder Laboratories, A.

H. Morgan and D. H. Andrews. Consultative Committee for Definition of the Second Intern. Comm. on Weights and Measures, Apr. 11-12, 1961, p. 1-10

(June 1961)

.

4176. Microbalance techniques for high temperature

application, R. F. Walker. Book, Vacuum Microbalance Techniques, Ed. M. J. Katz, 1, 87-110 (Plen- um Press, Inc., New York, N. Y., 1961). 309
1961

4177. Microtechnique for the infrared study of solids, diamonds and sapphires as cell materials, E.

R. Lippincott, F. E. Welsh, and C. E. Weir. Anal.

Chem. 33, 137-143 (Jan. 1961).

4178. Microwave spectrum of cis-dif luoreothylene

.

Structures and dipole moments of f luoroethylenes

,

V. W. Laurie. J. Chem. Phys. 34, No. 1, 291

(1961) . 4179. Microwave spectrum of isobutylene. Dipole

moment, internal barrier, equilibrium conformation, and structure, V. W. Laurie. J. Chem. Phys.

34, No. 5, 1516-1519 (May 1961). 4180. Microwave Zeeman effect of free hydroxyl

radicals, H. E. Radford. Phys. Rev. 122, 114

(1961). 4181. Millimeter wave techniques, W. Culshaw. Book, Advances in Electronics and Electron Physics XV, 197-263 (Academic Press, Inc., New York, N. Y.

,

1961)

.

4182. Molecular structure of propylene, D. R. Lide,

Jr., and D. Christensen. J. Chem. Phys. 35, No.

4, 1374-1378 (Oct. 1961).

4183. Multiple biologic recording for digital

analysis, H. L. Mason. Proc. Interdisciplinary Psychophysiological Research, FIER Clinic on Psychophysiological Instrumentation, Lafayette

Clinic I, p. 65-67 (May 16-17, 1961).

4184. Multiple layer insulation for cyrogenic ap- plications, R. H. Kropshot. Cryogenics 1, 171-177

(Mar. 1961). 4184A. Multipliers of difference sets, M. Newman.

Can. J. Math. 13, 121-124 (Nov. 1961).

4185. Multivalued logic devices for simulating

threshold neurons, D. R. Boyle and R. S. Ledley.

Proc. First and Second Annual Symp. Switching

Circuit Theory and Logical Design 1, 77-82

(Sept. 1961).

4186. Mutual interference between surface and sat- ellite communication systems, B. Hartman and M.

T. Decker. Book, Frequency Allocations for Space Communications, Chapt . 5, p. 111-157 (Report of

the Joint Tech. Adv. Comm. IRE-EIA to the Federal Communications Commission, Mar. 1961).

4187. National Bureau of Standards, Washington, D. C, and Boulder, Colorado, C. E. Moore. Astron.

J. 66, No. 10, 639-640 (Dec. 1961).

4188. Natural and synthetic rubbers: Review of test methods, F. J. Linnig, M. Tryon, and E. J. Parks. Anal. Chem. 33, 127R (Apr. 1961). 4189. NBS atomic frequency standards, R. C. Mockler and R. E. Beehler. Proc. 14th Annual Symp. Frequency Control, Atlantic City, N. J. May 31-

June 3, 1960), p. 298-309 (Signal Corps. Eng. Laboratories, Ft. Monmouth, N. J., 1961). 4190. NBS —source of American standards, W. A. Wildhack. ISA J. 8, No. 2, 45-50 (Feb. 1961).

4191. New plumbing stack data disclosed, R. S. Wyly. Contractor, p. 17 (Walther Publ. Assoc.,

New York, N. Y., Aug. 1, 1961).

4192. New standards for the space age, A. T. Mcpherson. Astronautics 6, No. 1, 24-25; 50-54

(Jan. 1961). 4193. Nomenclature of carbohydrates, R. S. Tipson.

J. Chem. Documentation 2, No. 3, 3-7 (1961). 4194. Non-additivity in two-way analysis of variance, J. Mandel. J. Am. Stat. Assoc. 56, 878-888

(Dec. 1961).

4195. Nonequilibrium processes in isotopically dis- ordered crystals. Dependence on degree of order,

R. W. Zwanzig. J. Math. Phys. 2, No . 3 , 370-373

(May-June 1961)

.

4196. Observations on the chemiluminescent reaction

of nitric oxide with atomic oxygen, H. P. Broida,

H. I. Schiff, and T. M. Sugden. Trans. Faraday

Soc. 57, No. 458, 259-265 (Feb. 1961). 4197. On a qualitative feature of photoionization

spectra, U. Fano. 2d Intern. Conf. Physics of Electronic and Atomic Collisions, p. 10-11 (U- niversity of Colorado, Boulder, Colo., June 12-

15, 1961). 4197A. On Rayleigh's non-linear vibration equation

A. Ghaffari, Proc. Intern. Symp. Non-linear Vibration II, 130-133 (Sept. 1961). 4198. On some partial differential equations of Brownian motion of a free particle (abstract),

A. Ghaffari. Proc. Intern. Conf. on Partial Dif- ferential Equations and Continuum Mechanics (U- niversity of Wisconsin, Madison, Wise., June 7-

15, 1960), p. 348-350 (1961). 4199. On the average atmospheric radio refractive

index structure over North America, B. R. Bean

and J. D. Horn. Beitr. Phys. Atmos. 34, No. 1/2, 92-104 (1961). 4200. On the classical approximation in the statistical theory of mass spectra, H. M. Rosenstock.

J. Chem. Phys. 34, 2182-2183 (June 3, 1961). 4201. On the determination of disintegration rates by the coincidence method using high efficiency

detectors, R. W. Hayward, Intern. J. Appl . Radiation Isotopes 12, 148-150 (Dec. 1961).

4202. On the extension of the low-chromosphere model to the region of origin of the UV solar spectrum, R. N. Thomas. (Proc. 10th Astrophysical

Symp. Liege, Belgium), Mem. Roy. Soc. Belgium

20, 305 (1961). 4203. On the impedance of long wire suspended over

the ground, J. R. Wait. Proc. IRE 49, No. 10, 1576 (Oct. 1961). 4204. On the interpretation of prominence spectra.

IV. The Balmer and Paschen continua in a quiet

prominence, J. T. Jefferies and F. Q. Orrall. Astrophys. J. 134, No. 3, 747 (Nov. 1961). 4205. On the nature of equatorial spread F, R. S. Cohen and K. L. Bowles. J. Geophys . Research 6, No. 4, 1081-1106 (Apr. 1961).

4206. On the nature of the crystal field approximation, C. M. Herzfeld and H. Goldberg. J. Chem.

Phys. 34, 643-651 (Feb. 1961). 4207. On the possibility of rejecting certain modes

in VLF propagation, J. R. Wait. Proc. IRE Letter

49, No. 9, 1429-1430 (Sept. 1961).

4208. On the relation between the permanent and the determinant, M. Marcus and H. Mine. Illinois J. Math. 5, 376-381 (Sept. 1961).

4209. Optical calibration of vibration pickups at small amplitudes, V. A. Schmidt, S. Edelman, E. R. Smith, and E. Jones. J. Acoust. Soc. Am. 33,

No. 6, 748-751 (June 1961).

4210. Oscillator models in unimolecular reactions,

M. L. Vestal and H. M. Rosenstock. J. Chem. Phys.

35, No. 6, 2008-2016 (Dec. 1961).

4211. Oxidation of alpha and beta-D-glucose with

bromine, H. S. Isbell. Chem. and Ind. No. 18, 593-594 (May 1961)

.

310
1961

4212. Pan American standards of mutual benefit to Latin America and the U.S., A. T. McPherson. Foreign Commerce Weekly (International Affairs,

U.S. Department of Commerce, Washington, D. C),

p. 1 (Nov. 13, 1961).

4213. Paramagnetic substances for nuclear orientation, R. P. Hudson. Book, Progress in Cryogenics

3, 99-127 (Heywood and Co., Ltd. London, England,

1961)

.

4214. Parameters a and /3 in the spectra of the iron

group, R. E. Trees and C. K. Jorgensen. Phys. Rev.

132, No. 4, 1278-1280 (Aug. 15, 1961).

4215. Parametric amplification with a low-frequency

pump, G. F. Montgomery. Proc. IRE 49, No. 7, 1214-1215 (July 1961).

4216. Partial confounding in fractional replication, W. J. Youden. Technometrics 3, No. 3, 353-

358 (Aug. 1961).

4217. Path loss measurements versus prediction for long distance tropospheric scatter circuits, A.

F. Barghausen and C. F. Peterson. IRE Trans. Commun. Systems. CS-9, No. 4, 439-445 (Dec. 1961).

4218. Performance characteristics of turbine flowmeters, M. R. Shafer. Trans. ASME J. of Basic

Engr. Paper No. 61-WA-25, p. 1-8 (June 1961). 4219. Perturbations and rotational intensities ob- served in CN bands emitted by reactions of organic molecules with nitrogen atoms, N. H. Kiess and

H. P. Broida. J. Mole. Spect. 7, No. 3, 194-208

(Sept. 1961).

4220. Phase equilibria in the system cadmium oxide- niobium oxide, R. S. Roth. J. Am. Ceram. Soc. 44, No. 1, 49-50 (Jan. 1961).

4221. Phase equilibria research in systems involving the rare earth oxides, R. S. Roth. Book, Rare Earth Research, Pt . II, p. 88-95 (The MacMillan

Company, New York, N. Y., 1961).

4222. Phase shift method for one-dimensional scattering, A. H. Kahn. Am. J. Phys. 29, 77 (1961). 4223. Photographic response to successive exposures

of different types of radiation, M. Ehrlich and

W. L. McLaughlin. J. Opt. Soc. Am. 51, No. 11, 1172-1181 (Nov. 1961).

4224. Photoionization heating in the F region of

the atmosphere, D. C. Hunt and T. E. Van Zandt.

J. Geophys. Res. 66, No. 6, 1673-1682 (June

1961)

.

4225. Photolysis of acetone-d6 in the presence of propane-2,2-d2

. Decomposition of the n-propyl

radical, W. M. Jackson and J. R. McNesby. J. Am. Chem. Soc. 83, 4891-4896 (1961). 4226. Photon-dissociation of water: initial non- equilibrium populations of rotational states of OH( 2

2

+

). I. Tanaka, T. Carrington, and H. P. Broida. J. Chem. Phys. 35, No. 2, 750-751 (Aug. 1961)

.

4227. Photonuclear physics, M. Danos . University

of Maryland Tech. Report 221 (Univ. of Maryland, College Park, Md. , July 1961).

4228. Physical measurement —Challenge to science

and engineering, A. V. Astin. SPE J. 17, No. 5, 455-458 (May 1961)

.

4229. Plan for geophysical alerts and special world intervals during 1961-1962, J. M. Weldon,

A. H. Shapley, and J. V. Lincoln. IGY Bull. 47,

11 (1961). 4230. Plastics, G. M. Kline. The Americana Annual,

p. 603 (Americana Corp., Chicago, 111. 1961).

4231. Plastics standards in government, F. W. Reinhart. Proc. Am. Std. Assoc. Twelfth Natl. Conf

.

Standards, Houston, Texas, p. 44-46 (Oct. 1961).

4232. Plating gun bores, V. A. Lamb and J. P. Young. Ordnance XLV, No. 245, 725-727 (Mar. -Apr. 1961); Buchsenmacher 56, No. 7, 130 (1961). 4233. Polymorphism in monobromacetic acid and the diagram of state of dichloroacetic acid at ele- vated pressures, A. R. Glasgow and J. Timmermans

.

Bull. Soc. Chim. Beiges 70, 623-641 (1961). 4234. Polymorphism of AB03 type rare earth borates,

E. M. Levin, R. S. Roth, and J. B. Martin. Am. Mineralogist 46, 1030-1055 (Sept. 1961). 4235. Possible solar flare effects in the F region

of the ionosphere, K. Davies and R. W. Knecht. Nature 192, No. 4800, 347-348 (Oct. 1961).

4236. Post office mechanization, B. M. Levin, M. C. Stark, and P. C. Tosini. Elec. Eng. 80, No. 2, 105-110 (Feb. 1961).

4237. Potential heat: a method for measuring the heat release of materials in building fires, J.

J. Loftus, D. Gross, and A. F. Robertson. Am. . Soc. Testing Materials Proc. 61, 1336-1348

(1961) . 4238. Precise measurement of the microwave absorption frequencies of the oxygen molecule and the velocity of light, R. W. Zimmerer and M. Mizushima. Phys. Rev. 121, No. 1, 152-155 (Jan. 1, 1961)

.

4239. Precision and accuracy—experiment design

aspects, C. Eisenhart. Conf. Applications of Sta- tistical Methods in the Chemical Industry, Feb.

4, 1961, (Sponsored by Am. Soc. for Quality Control, Metropolitan Section, Seaton Hall University, South Orange, N. J.), p. 1 (1961). 4240. Precision of reverberation chamber measurements of sound absorption coefficients, R. V. Waterhouse. Proc. Third Intern. Congress on Acous

tics II, 886-889 (Elsevier Publ. Co., Amsterdam,

The Netherlands, 1961).

4241. Preparation and evaluation of pure substance

standards, E. Wichers. Anal. Chem. 33, 23A (Apr. 1961)

.

4242. Preparation and properties of aromatic flu- orocarbons, W. J. Pummer and L. A. Wall. J. Chem.

Eng. Data 6, No. 1, 76-78 (Jan. 1961). 4243. Preparation, transfer, and dilution of a 50/» sodium hydroxide solution, R. G. Bates. Chem.-

Anal. 50, No. 4, 117-118 (Dec. 1961). 4244. Present status of panoramic roentgenography,

J. W. Kumpula. J. Am. Dental Assoc. 63, No. 8, 194-200 (Aug. 1961).

4245. Propagation, ionosphere, K. Davies. Encyclopedia of Electronics, p. 631-633 (Reinhold Publ. Corp., New York, N. Y., 1961).

4246. Properties of iron and iron alloys (high pu- rity irons (99.9+% Fe)), G. A. Moore and T. R. Shives. Am. Soc. Metals Handb . 1, 1206 (1961). 4247. Proposed nomenclature for linear vlscoelastic

behavior, H. Leaderman and F. Schwarzl. Acta Rheological 1, No, 4/6, 674-676 (June 1961).

4248. Pulse voltage comparator measures height of positive or negative pulses, 0. B. Laug . Electronics 34, No. 36, 70-71 (Sept. 8, 1961).

4249. Pure substance and measurement, E. Wichers.

Mater. Res. Stds. 1, No. 4, 314-315 (Apr. 1961).

4250. Purification and vapor pressure of pure nitri

oxide, E. E. Hughes. J. Chem. Phys. Letter to Editor 35, No. 4, 1531-1532 (Oct. 1961).

311
1961 4251. Quantum statistical mechanics of isotope effects, I. Oppenheim and A. S. Friedman. J. Chem.

Phys. 35, No. 1, 35-40 (July 1961).

4252. Quantum theory of interference effects in the mixing of light from phase-independent sources,

U. Fano. Am. J. Phys. 29, No. 8, 539-545 (Aug. 1961)

.

4252A. Questions of general background and methodology relating to aerodynamic phenomena in stellar atmospheres, J. C. Pecker and R. N. Thomas.

II Nuovo Cimento Suppl. 22, No. X, Pt. I, 1-43

(1961) . 4252B. Radiation, L. S. Taylor. Americana Annual,

p. 620-622 (Americana Corp. , Chicago, 111., 1961)

.

4253. Radio observations of Jupiter II, R. M. Gallet. Book, Planets and Satellites, III, 500-534

of The Solar System Series, ed. G. P. Kuiper

(University of Chicago Press, Chicago, 111., 1961)

.

4254. Radio propagation quality in the North Atlan-

. tic area 1953-1960, M. E. Nason. AGARdograph,

Proc. Sixth AGARD Conf . Ionospheric Res. Comm. Meeting, Rome, Italy, May 15-18, 1961. 4255. Radio properties of aurorae, C. G. Little. USA Natl. Comm. Intern. Sci. Radio Union Report

to Natl. Acad. Sci. -Natl. Res. Council on 13th

Gen. Assembly, Sept. 5-15, 1960, London, England,

p. 261-270 (Natl. Acad. Sci. -Natl. Res. Council,

Wash., D. C. 1961).

4256. Radioactive contamination of materials used

in scientific research, J. R. DeVoe. Natl. Acad.

Sci. -Natl. Res. Council Nuclear Sci. Series No. 34 (1961). 4257. Radiochemical separations of cadmium by amalgam exchange, J. R. DeVoe , H. W. Nass, and W. W. Meinke. Anal. Chem. 33, 1713 (1961). 4258. Radiochemical separations of indium by amal- gam exchange, R. R. Ruch, J. R. DeVoe, and W. W. Meinke. Talanta 9, 33-38 (1961). 4259. Rapid method for interpolating refractive

index measurements, 0. N. Stavroudis and L. E. Sutton. J. Opt. Soc. Am. 51, No. 3, 368-370 (Mar. 1961)

.

4260. Rate of the reaction N0+

N, J. T. Herron. J. Chem. Phys. 35, No. 3, 1138-1139 (Sept. 1961). 4261. Rate of vaporization of refractory substances, R. F. Walker, J. Efimenko, and N. L. Lofgren. Book, Physical Chemistry in Aerodynamics

and Space Flight, p. 24-30 (Pergamon Press, Inc., London, England, Feb. 1961). 4262. Unassigned.

4263. Reagent chemicals, W. S. Clabaugh. Specifications prepared by the Committee on Analytical

Reagents, Am. Chem. Soc. (1961). 4264. Recent advances in inf rared-spectroscopy , E.

K. Plyler. Current Sci. 30, 1-3 (1961). 4265. Recent radar observations of new forms of ionosphere scatter, K. L. Bowles. USA Natl. Comm.

Intern. Sci. Radio Union Report to Natl. Acad.

Sci. -Natl. Res. Council on 13th Gen. Assembly,

Sept. 5-15, 1960, London, England, p. 288-295

(Natl. Acad. Sci. -Natl. Res. Council, Wash., D. C. 1961).

4266. Recent studies on rutile (Ti02) , H. P. R. Frederikse. J. Appl . Phys. Suppl. 32, No. 10, 2211-2215 (Oct. 1961).

4266A. Recognition of clauses in machine translation of languages, F. L. Alt and I. Rhodes.

Proc. Intern. Conf. Machine Translation of Languages and Applied Language Analysis, Teddington, England, Symp. No. 13, p. 126-142 (Her Majesties Stationery Office, London, England, 1961).

4267. Redetermination of the chromium and nickel solvuses in the chromium-nickel system, C. J. Bechtoldt and H. C. Vacher. Trans. Metallurgical Soc, Am. Inst. Mining Engrs .

, 221, 14-18 (Feb. 1961)

.

4268. Re-examination of the polymorphism of di- calcium silicate, D. K. Smith, A. J. Majumdar,

and F. Ordway. J. Am. Ceram. Soc. 44, No. 8, 405-411 (Aug. 1961).

4269. References to contemporary papers on acoustics, W. Koidan. J. Acoust. Soc. Am. 33, No. 5, 705-716 (May 1961).

4270. Refining measurements by capacitance techniques, F. K. Harris and R. D. Cutkosky. ISAJ. Instr. Soc. Am. 2, 63-66 (Feb. 1961).

4271. Refraction effects of large-scale ionospheric irregularities observed at Boulder, Colorado, R.

S. Lawrence and J. L. Jespersen. (Proc. Second

Intern. Space Science Symp., Florence, Italy, Apr. 10-14, 1961), Book, Space Research II, 277-

284 (North Holland Publ . Co., Amsterdam, The Netherlands, Apr. 1961). 4272. Refractive index measurements, L. W. Tilton

and J. K. Taylor. Book, Physical Methods in Chemical Analysis, 2d Revised Ed. II, 412-461

(Academic Press, Inc., New York, N. Y., 1961). 4273. Relation of solar active regions at general meridian passage to ionospheric disturbance, C.

S. Warwick and J. V. Lincoln. AGARDograph, (Proc. Sixth ADARD Conf. Ionospheric Res. Comm. Meeting,

Rome, Italy, May 15-18, 1961). 4274. Relative intensities for the arc spectra of seventy elements, W. F. Meggers, C. H. Corliss,

and B. F. Scribner. Spectrochim. Acta 17, No. 11, 1137-1172 (Nov. 1961).

4275. Relativistic matrix elements and the velocity dependence of nuclear potentials, R. W. Hayward

and D. D. Hoppes. Rutherford Centennial Jubilee, Manchester, England, p. 725-728 (Sept. 1961).

4276. Report of referee on sugar and sugar products, E. J. McDonald. J. Offic. Agri. Chem. 44, No. 2, 329 (1961). 4277. Reproducibilities of carbon and germanium

thermometers at 4.2°K, M. H. Edlow and H. H. Plumb. Proc. 1960 Cryogenic Conf. Book, Advances

in Cryogenic Engineering 6, Paper H-7 , 542-547

(Plenum Press, Inc., New York, N. Y., 1961).

4278. Repulsion of energy levels in complex atomic

spectra, R. E. Trees. Phys. Rev. 123, No. 4, 1293-1300 (Aug. 15, 1961).

4279. Research on light metals in the Metallurgy

Division, NBS, T. G. Digges. India Tech. J. (Natl. Metals Lab., Jamshedpur, India), III, No.

1, 22 (Feb. 1961); (Symp. Light Metal Industry, Jamshedpur, India) Indian Construction News,

p. 68 (Aug. 1961). 4280. Residual losses in a guard-ring micrometerelectrode holder for solid-disk dielectric specimens, A. H. Scott and W. P. Harris. 1960 Annual Report, Conf. Electrical Insulation, Natl. Acad. Sci. -Natl. Research Council, p. 11-17

(1961).

312
1961

4281. Resonance characteristics of a corrugated

cylinder excited by a magnetic dipole, J. R. Wait and A. M. Conda. IRE Trans. Ant. Prop. AP-9,

No. 4, 330-333 (July 1961).

4282. Resonators for millimeter and submillimeter

wavelengths, W. Culshaw. IRE Trans. Microwave

Theory and Tech. MTT-9, No. 2, 13 5-144 (Mar. 1961)

.

4283. Robustness of life testing procedures based

on the exponential distribution, M. C. Danne- miller and M. Zelen. Technometrics 3, No. 1, 29- 49 (Feb. 1961); Missile Design and Development,

p. 35-36 (Mar. 1961). 4283A. Roger Joseph Boscovich and the combination

of observations, C. Eisenhart. Actes du Symp.

Intern. Roger Boscovich, Beograd, p. 19-25

(1961). 4284. Satellites and the upper atmosphere, A. H. Shapely and 0. G. Villard. Book, Science in Space, Chapt. 8, p. 169-181 (McGraw-Hill Book Co., Inc., New York, N. Y. , 1961)

.

4285. Science news writing, D. M. Gates and J. M. Parker. Science 133, No. 3477, 211-214 (Jan. 1961)

.

4286. Second revision of American Dental Association Specification No. 4 for dental inlay casting

wax, J. W. Stanford, K. V. Weigel, and G. C. Paf- fenbarger. J. Am. Dental Assoc. 62, 45 (Jan. 1961)

.

4287. Self-qualification of laboratories, A. T. McPherson. Instr. Control Systems 34, No. 7, 1265 (July 1961)

.

4288. Simple adiabatic demagnetization apparatus,

V. D. Arp and R. H. Kropschot. Rev. Sci. Instr.

32, 217-218 (Feb. 1961). 4289. Single-trace sweep adapter for transistorcurve tracers, L. J. Swartzendruber . Rev. Sci. Instr. 33, No. 5, 560-562 (Aug. 1961).

4290. Slow drift solar radio bursts: harmonic fre- quency ratios, solar longitude dependence, and frequency draft rates, M. Wood. Australian J. Phys. 14, No. 2, 234-241 (June 1961).

4291. Solar disturbances and radio communication

forecasts, J. R. Brockman. Sky and Telescope XXI,

No. 6, 322-326 (June 1961). 4292. Solar flare effects in the F region of the ionosphere, R. W. Knecht and K. Davies. Nature

190, No. 4778, 797-798 (May 1961).

4293. Solubility product phenomena in hydroxyapatite—water systems, H. M. Rootare, V. R

.

Deitz, and F. G. Carpenter. Proc. 6th Tech. Session on Bone Char 1959, p. 287 (Bone Char Re- search Project Inc., Charlestown, Mass., 1961). 4294. Some applications of Hardy's formula in Brownian motion (abstract), A. Ghaffari. Am. Math. Soc. Notices 8, No. 54, 238 (June 1961).

4295. Some applications of the generating functional of the molecular distribution functions, M. S. Green. Book, Lectures in Theoretical Physics

(Lectures delivered at the Summer Inst, for The- oretical Phys., University of Colorado, Boulder,

Colorado, 1960), III, 195-220 (Interscience Publ.,

Inc., New York, N. Y. , 1961).

4296. Some comments on the use and preparation of hard gallium, G. G. Harman. Rev. Sci. Instr. 32, No. 4, 465-466 (Apr. 1961). 4297. Some goemetrical theorems for abscissas and weights of Gauss type, P. J. Davis and P. Rabinowitz. J. Math. Anal, and Appl . 2, No. 3, 428-

437 (June 1961)

.

4298. Some obseri gle crys als oppei

af copper deposits on sin-

, I. Giron and F. Ogburn.

J. Electrochem. Soc. 38, No. 9, 842-846 (Sept. 1961)

.

4299. Some observations of 2.89 Mc/s equivalent

antenna temperatures at the auroral zone, C. G. Little, G. M. Lerfald, and R. Parthasarathy . J. Atmospheric and Terrest. Phys. 53, 275-286

(Dec. 1961).

4300. Some physical properties of monochloro-dichloro-, and monobromoacetic acids at 1 atmosphere, A. R. Glasgow and J. Timmermans . Bull.

Soc. Chim. Beiges 70, 599-622 (1961). 4301. Some relationships between short-wave fadeouts, magnetic crochets, and solar flares, L. Acton. J. Geophys. Res. Letter to Editor 66, No.

9, 60-63 (Sept. 1961). 4302. Sound absorption by areas of finite size, R.

K. Cook. Proc. Third Intern. Congress on Acoustics II, 883-885 (Elsevier Publ. Co., Amsterdam,

The Netherlands, 1961),

4303. Spectroscopic standard samples of titanium

and high-temperature alloys, R. E. Michaelis.

Appl. Spectroscopy 15, 7 (1961). 4304. Spectroscopy of fluorine flames. I. Hydrogenfluorine flame and the vibration-rotation emission spectrum of HF, D. E. Mann, B. A. Thrush,

D. R. Lide, J. J. Ball, and N. Acquista. J. Chem.

Phys. 34, No. 2, 420-431 (Feb. 1961). 4305. Spin-lattice relaxation in cerous magnesium

nitrate, R. P. Hudson and R. S. Kaeser. II Nuovo Cimento 19, No. X, 1275-1277 (Mar. 16, 1961).

4306. Stability of plastic impression trays, J. B. Woelfel and G. C. Paf f enbarger . J. Am. Dental

Assoc. 63, No. 5, 705-706 (Nov. 1961).

4307. Stability of thermoset plastics at high tem- peratures, S. L. Madorsky and S. Straus. Modern

Plastics 38, 134-140 (Feb. 1961). 4308. Standardization of thermal emittance measurements, W. N. Harrison, J. C. Richmond, E. K. Plyler, R. Stair, and H. K. Skramstad. Wright Air

Devel. Ctr. Tech. Rept . Pt . II, 1-21 (Feb. 1916). 4309. Standards for plastic pipe and fittings, F. W. Reinhart. SPE J. 17, 160 (Feb. 1961).

4310. Standards for plastics in the U.S.A., G. M. Kline. Proc. Thirteenth Intern. Plastics Congress, Turin, Italy, p. 27-33 (Sept. 28-30,

1961)

.

4311. Standards —the key to success in engineering,

A. T. McPherson. Rev. Centro Estud. Ing. 130, No. 656, 352-355 (1961). 4312. Static dielectric constant of rutile (Ti02 )

,

1.6-1060°K, R. A. Parker. Phys. Rev. 124, No. 6, 1719-1722 (Dec. 1961). 4313. Statistical dynamics of simple cubic lattices. Model for the study of Brownian motion,

Pt. II, R. J. Rubin. J. Math. Phys. 2, 373

(1961)

.

4314. Statistical mechanics of irreversibility, R. W. Zwanzig. Book, Lectures in Theoretical Physics

(Lectures delivered at the Summer Institute for Theoretical Physics, University of Colorado,

Boulder, Colo., 1960), III, 106-141 (Interscience

Publ., Inc., New York, N. Y., 1961).

4315. Statistical problems arising in the establishment of physical standards, W. J. Youden.

Proc. 4th Berkley Symposium on Mathematical

Statistics and Probability III, 321 (Univ. Cali- fornia Press, Los Angeles, Calif., 1961).

313
1961 4316. Stepless variable resistor for high currents,

C. R. Yokley and J. B. Shumaker, Jr. Rev. Sci. Instr. 32, No. 1, 6-8 (Jan. 1961).

4317. Stress-rupture tests at 1350°F on type 304 stainless steel, W. D. Jenkins, W. A. Willard,

and W. J. Youden. Materials Research and Standards (ASTMBull.), 1, No. 2, 104-108 (Feb. 1961).

4318. Stress-strain relationships in yarns sub- jected to rapid impact loading. Part 7. Stressstrain curves and breaking energy data for tex- tile yarns, J. C. Smith, P. J. Shouse, J. M. Blandford, and K. M. Towne . Textile Res. J. 31,

No. 8, 721-734 (Aug. 1961).

4319. Strong blast waves in spherical, cylindrical,

and plane shocks, D. L. Jones. Phys. Fluids 4, No. 9, 1183-1184 (Sept. 1961).

4320. Structural and internal state variables in the description of scalar rate processes in fluids, R. E. Nettleton. Phys. Fluids 4, 1488

(1961) . 4321. Studies of elevated temperature corrosion of type 310 stainless steel by vanadium compounds,

H. L. Logan. Corrosion 17, No. 4, 109-111 (Apr. 1961)

.

4322. Studies of environmental factors in a fam- ily-size underground shelter, P. R. Achenbach,

F. J. J. Drapeau, and C. W. Phillips. Report OCDM-NBS-60-1 issued by Office of Civil Defense Mobilization (Mar. 1961).

4323. Studies of the low temperature distillation

of hydrogen isotopes, T. M. Flynn. Cryogenics 1, 96-100 (Dec. 1960); Proc . 1960 Cryogenic Eng. Conf. Book, Advances in Cryogenic Engineering 6, Paper D-8, 236-244 (Plenum Press, Inc., New York,

N. Y., 1961).

4324. Studies of the particle-impact process for applying ceramic and cermet coatings, D. G. Moore, A. G. Eubanks, H. R. Thornton, W. D. Hayes, Jr., and A. W. Crigler. Aero. Res. Laboratory, U.S. Air Force No. ARL 59, p. 1-52 (Aug. 1961)

.

4325. Suggested arrangement of mirrors to form multiple reference angles, J. B. Saunders. J. Opt. Soc. Am. 51, No. 8, 859-862 (Aug. 1961).

4325A. Summary of symposium on methods of metallographic specimen preparation, L. L. Wyman. Am. Soc. Testing Mater. Spec. Tech. Publ. 285, 130

(May 1961)

.

4326. Sun storms and the earth: The aurora polaris

and the space around the earth, S. Chapman. Am. Scientist 49, No. 3, 249-284 (Sept. 1961). 4327. Sun-time replaced by atomic clocks, R. S. Tipson. Capital Chemist 11, 255 (Nov. 1961).

4328. Superconducting magnets, V. D. Arp and R.

H. Kropschot. Proc. 1960 Cryogenic Eng. Conf.,

Book, Advances in Cryogenic Engineering 6, Paper

C-4, 166-173 (Plenum Press, Inc., New York, N.

Y. , 1961).

4329. Superconducting magnets, R. H. Kropschot and

V. Arp. Cryogenics 2, No. 1, 1-15 (Sept. 1961).

4330. Superconducting rectifiers, J. R. Purcell

and E. G. Payne, Proc. 1960 Cryogenic Eng. Conf.

Book, Advances in Cryogenic Engineering 6, Paper

C-2, 149-153 (Plenum Press, Inc., New York, N. Y., 1961).

4331. Superconductivity of NBgSn in pulsed fields

of 185 kilogauss, V. D. Arp, R. H. Kropschot, J.

H. Wilson, W. F. Love, and R. Phelna. Phys. Rev. Letters 6, No. 9, 452-453 (Mar. 1, 1961).

4332. Supporting evidence for solar flare effects

in the F region of the ionosphere, R. W. Knecht

and K. Davies. Nature 192, No. 4800, 348-350

(Oct. 1961).

4333. Surface flammability of f ire-retardant and conventional paint assemblies, D. Gross and J. J. Loftus. Fire Res. Abstr. and Rev. 3, No. 3, 151-158 (Natl. Acad. Sci. -Natl. Res. Council,

1961)

.

4334. Surface roughness of dental gold castings, J.

J. Barone, R. L. Huff, and G. Dickson. Dental

Prog. 1, No. 2, 78-84 (Jan. 1961).

4335. Systematic errors, W. J. Youden. Ordnance

XLVI, No. 248, 299-301 (Sept. -Oct. 1961).

4336. Systematic errors in physical constants, W.

J. Youden. Phys. Today 14, No. 9, 32-34, 36, 38, 40, 42 (Sept. 1961).

4337. Tchebycheff approximations by functions uni- solvent of variable degree, J. R. Rice. Trans.

Am. Math. Soc. 99, 298-302 (1961). 4338. Technique for calculating infrared absorptance by a regular band, L. R. Megill and P. M. Jamnick. J. Opt. Soc. Am. 51, No. 11, 1294-1297

(Nov. 1961). 4339. Temperature dependence of electron emission

in the field emission region. R. Klein and L. Leder. Phys. Rev. 124, No. 4, 1046-1049 (Nov. 1961)

.

4340. Tensile cryostat for the temperature range

4° to 300°K, R. M. McClintock and K. A. Warren.

Proc. 1960 Cryogenic Eng. Conf. Book, Advances

in Cryogenic Engineering 6, Paper F-4, 372-378

(Plenum Press, Inc., New York, N. Y. , 1961); Materials Research and Standards (ASTM Bull.),

1, 95-98 (Feb. 1961).

4341. Tensile shear strength of adhesive bonded

metals as a function of the rate of loading, D. A. George, H. R. Butzlaff, and J. Mandel. Symp. Adhesion and Adhesives, Am. Soc. Testing Materials Spec. Tech. Publ. 271, 47-53 (1961). 4342. Testing of ball bearings with five different

separator materials at 9200 RPM in liquid nitrogen, J. A. Brennan, W. A. Wilson, R. Radebaugh,

and B. W. Birmingham. Am. Soc. Mech. Engrs . No. 61-LUBS-18, 1-8 (Apr. 10, 1961). 4343. The absorption spectra of magnesium and manSchnepp. J. Phys. Chem. Solids 17, 188-195

(1961)

.

4344. The activation energy for hydrogen atom ad- dition to propylene, M. D. Scheer and R. Klein.

J. Phys. Chem. 65, 375-377 (1961). 4345. The adsorption of methane on silica gel at low temperatures, M. J. Hiza and A. J. Kidnay.

Proc. 1960 Cryogenic Eng. Conf. Book, Advances

in Cryogenic Engineering 6, Paper G-5, 457-466

(Plenum Press, Inc., New York, N. Y. , 1961). 4346. The automatic chloride titrator in the analysis of some ionic constituents, M. D. Peiperl,

F. G. Carpenter, and V. R. Dietz, Proc. 6th Tech. Session on Bone Char 1959, p. 53 (Bone Char Re- search Project Inc., Charlestown, Mass. 1961).

4347. The densities of saturated liquid hydrogen,

R. D. Goodwin, D. E. Diller, H. M. Roder, and L. A. Weber. Cryogenics 2, 81-83 (Dec. 1961).

4348. The development of more stable gage blocks,

M. R. Meyer son, W. R. Ney, and T. R. Young. Ma- terials Research and Standards (ASTM Bull.), 1, No. 5, 368-374 (May 1961).

314
1961

4349. The effect of lithium bromide on the structural transition of ribonuclease in solution, L. Mandelkern and D. E. Roberts. J. Am. Chem. Soc.

83, 4292-4293 (Oct. 1961).

43 50. The effects of solvents on the gamma-ray ra- diolysis of methyl acetate and acetone, P. Ausloos. J. Am. Chem. Soc, 83, No. 5, 1056-1060

(Mar. 1961). 4351. The electromagnetic fields of a dipole in the presence of a thin plasma sheet, J. R. Wait. Appl. Sci. Research, Sec. B, vol. 8, 397-417

(1961). 4352. The electromagnetic fields of a horizontal

dipole in the presence of a conducting halfspace, J. R. Wait. Can. J. Phys . 39, No. 7, 1017-

1028 (July 1961)

.

4353. The fluorescence and phosphorescence of trif luoroacetone vapor, P. Ausloos and E. Murad. J. Am. Chem. Soc. 83, 1327 (1961). 4354. The glass electrode, R. G. Bates. Book, Ref- erence Electrodes, ed. by D. J. G. Ives and G. J. Janz, Chapt. 5, p. 231-269 (Academic Press, Inc., New York, N. Y. , 1961)

.

4355. The half-life of carbon-14 , W. B. Mann, W. F. Marios, and E. E. Hughes. J. Appl. Radiation Iso- topes 11, No. 2, 57-67 (Sept. 1961).

43 56. The international geophysical year world magnetic survey, S. Chapman. ICSU Rev. 3, 77-80

(1961). 4357. The interpretation and synthesis of certain spread-F configurations appearing on equatorial

ionograms, W. Calvert and R. Cohen. J. Geophys.

Res. 66, No. 10, 3125-3140 (Oct. 1961).

4358. The ionization constant of hydroxylamine , R. A. Robinson and V. E. Bower. J. Phys. Chem. 65, 1279-1280 (1961). 4359. The joint board on science education, R. B. Hobbs. Capital Chemist 11, No. 10, 221-225

(1961). 4360. The mechanism of electrolytic deposition of titanium from fused salt media, W. E. Reid. J. Electrochem. Soc. 108, No. 4, 393-394 (Apr. 1961)

.

4361. The microwave Zeeman spectrum of atomic fluorine, H. E. Radford. Phys. Rev. 123,153 (1961). 4362. The morphology of sporadic E, E. K. Smith.

Proc. XHIth General Assembly URSI (London, England, 1960), Natl. Acad. Sci. -Natl. Research

Council Publ. 880, 218 (1961). 4363. The National Bureau of Standards Library, S. A. Jones. D. C. Libraries 32, 7-10 (Jan. 1961).

4364. The National Bureau of Standards method of syntactic integration, I. Rhodes. Proc. Natl.

Symp. Machine Translation, University of California, Los Angeles, Calif., p. 39-44 (1961). 4365. The nature, cause, and effect of porosity in electrodeposits . VI. Note on a magnetic method of detecting corrosion currents, F. Ogburn and W. H. Roberts. Plating 48, No. 2, 168-169 (Feb. 1961).

4366. The nature, cause, and effect of porosity in electrodeposited coatings. VII. A microscopic

examination of nickel coatings after atmospheric

corrosion, D. W. Ernst and F. Ogburn. Plating 48,

No. 5, 491-497 (May 1961).

4367. The oscillator strength distribution of rare

gas atoms calculated in a central potential model, J. W. Cooper. 2d Intern. Conf. Physics of Electronic and Atomic Collisions, p. 7-10 (Uni- versity of Colorado, Boulder, Colo., June 12-15

1961).

4368. The oxide films formed on copper single crystal surfaces in water. II. Rate of growth at room

temperature, J. Kruger. J. Electrochem. Soc. 108,

No. 6, 503 (June 1961)

.

43 69. The permanent function as an inner product,

M. Marcus and M. Newman. Bull. Am. Math. Soc. 67, No. 2, 223-224 (Mar. 1961). 4370. The photolysis of ethyl vinyl ether, E. Murad. J. Am. Chem. Soc. 83, 1327-1330 (1961). 4371. The program at the National Bureau of Standards, L. M. Branscomb. Book, Optical Spectroscopic Measurements of High Temperatures, ed . P.

J. Dickerman, p. 235 (Univ. of Chicago Press, Chicago, 111., 1961).

4372. The radiative formation and destruction of negative ions, L. M. Branscomb. Proc. Fifth In- tern. Conf. Ionization Phenomena in Gases, Munich, Germany I, 1-18 (North Holland Publ. Co., Amsterdam, The Netherlands, 1961).

4373. The rate of physical adsorption at low sur- face coverage, V. R. Deitz and F. G. Carpenter.

Advan. Chem. Series 33, 146 (1961). 4374. The relationships of low-height ionosonde

echoes to auroral-zone absorption and VHF for- ward scatter, J. K. Olesen and J. W. Wright. J. Geophys. Res. 66, No. 4, 1127-1134 (Apr. 1961).

437 5. The relaxation times of some paramagnetic

dispersions, P. H. Fang. Phys^ica 27, No. 7, 68 (1961)

.

3476. The retannage of chrome-tanned leather with vegetable tannins, J. R. Kanagy . J. Am. Leather Chemists Assoc. LVI, No. 6, 252-272 (June 1961).

4377. The significance of transients and steadystate behavior in nonlinear systems, W. J. Hartman. Proc. IRE Correspondence Section 49, No. 3, 637 (Mar. 1961).

4378. The structure of the monoclinic form of so- dium tetrametaphosphate tetrahydrate , H. M. Ondik, C. H. MacGillairy, and S. Block. Acta Crystallographica 14, 555 (1961). 4379. The structure of the vibrational-rotational

bands of an asymmetric rotor, H. C. Allen, Jr. Phil. Trans. Roy. Soc. (London, England, Ser. B Math, and Phys. Sci.) [A] 253, No. 1030, 335-357

(1961)

.

4380. The synthesis of food, A. T. McPherson. Ind. Res., p. 20-27 (Nov. 1961). 4381. The types of blackout, their time variations

and the mechanisms producing them, V. Agy. (Proc. Intern. Conf. on Cosmic Rays and the Earth

Storm), J. Phys. Soc. Japan 17, Suppl. 17, Pt

.

I, 93-97 (Sept. 1961). 4381A. The transmission of Rayleigh waves across

an ocean floor with two surface layers, U. W. Hochstrasser and R. Stoneley. Geophys. J. (Jef- freys Jubilee Number) 4, 197-201 (1961). 4382. The use of interferometer observations of satellites for measurement of irregular iono- spheric refraction, J. W. Warwick and R. S. Lawrence. Ann. IGY XII, Pt . 2, 566-569 (1961). 4383. The X- or gamma-ray energy absorption of transfer coefficient: tabulations and discussion,

R. T. Berger. Radiation Res. 15, No. 1, 1-29

(July 1961)

.

4384. The zeros of inf rapolynomials with some pre- scribed coefficients, 0. Shisha and J. L. Walsh.

J. Anal. Math. 9, 111-160 (1961).

315
1961

4385. Theory and biomedical applications of analog

computers, H. L. Mason. National Institutes of Health Workshop on Biomedical Computing No. 1 (July 1961). 4386. Theory of vibrational relaxation in liquids,

R. W. Zwanzig. J. Chem. Phys. 34, 1931-1939

(1961)

.

4387. Thermal conductivity of some commercial iron- nickel alloys, T. W. Watson and H. E. Robinson.

Trans. Am. Soc. Mech. Engr. J. Series C, Heat Transfer 83, No. 4, 403-408 (Nov. 1961).

4388. Thermal degradation of organic polymers, S.

L. Madorsky. SPE J. 17, No. 7, 665-671 (July 1961)

.

4389. Thermal degradation of polymers at temperatures up to 1200°C, S. L. Madorsky. Soc. Chem.

Ind. Mono. No. 13, 60-74 (1961). 4390. This works for us —approval, books for a science library. V. S. Barker. Special Libraries

52, No. 8, 471-472 (Oct. 1961).

4391. Timing potentials of Loran-C, R. H. Doherty,

G. Hefley, and R. F. Linfield. Loran-C, Proc

.

IRE 49, No. 11, 1659-1673 (Nov. 1961). 4392. Tongs used in testing for radioactive contamination, T. G. Hobbs. Health Phys. 6, No. 3-4, 224a-224b, 225 (Oct. 1961).

4393. Transition probabilities in multilevel systems: Calculation from impulsive and steady-state

experiments, T. Carrington. J. Chem. Phys. 35,

No. 3, 807-816 (Sept. 1961).

4394. Traveling pressure waves associated with geo- magnetic activity, P. Chrzanowski, G. Greene, K. T. Lemmon, and J. M. Young. J. Geophys. Res. 66, No. 11, 3727-3733 (Nov. 1961).

4395. Tunnel diode large signal simulation study,

S. Geller and P. Mantek. Proc. IRE 49, No. 4, 803

(Apr. 1961).

4396. Twenty-year atmospheric corrosion investigation of zinc-coated and uncoated wire and wire

products, F. M. Reinhart. Am. Soc. Testing Ma- terials Spec. Tech. Publ. 290, 1-141 (June 1961).

4397. Ultraviolet absorption spectra of ammonia in solid argon at 4.2°K, K. Dressier. J. Chem. Phys.

35, No. 1, 165-169 (July 1961).

4397A. Unorthodoxy in science, L. A. Wood. J. Wash.

Acad. Sci. 51, 30 (Mar. 1961).

4398. Upper atomosphere, A. H. Shapley. Sec. 3, Science in Antarctica Part II, Natl. Acad. Sci,-

Natl. Research Council Publ. 878 (1961). 4399. Use of an operational amplifier with Helmholtz coils for reducing ac induced magnetic

fields, L. A. Marzetta. Rev. Sci. Instr. 32, No.

11, 1192-1195 (Nov. 1961). 4400. Use of Gaussian orbitals for atoms-in-molecule calculations, M. Kraus. J. Chem. Phys. 34,

No. 2, 692-693 (Feb. 1961).

4401. Use of the bulge test for determining the mechanical properties of stainless steel foil, D. B. Ballard. Mater. Res. &Std. (ASTM Bull . ) , 1, No. 6, 471-473 (June 1961).

4402. Using digital computers in the design and maintenance of new computers, A. L. Leiner, A. Weinberger, H. Loberman, and C. D. Coleman. IRE Trans. Electronic Computers EC-10, No. 4, 680-690

(Dec. 1961).

4403. Vacuum ultraviolet photolysis of ethane: molecular detachment of hydrogen, H. Okabe and J. R. McNesby. J. Chem. Phys. 34, No. 2, 668-669 (Feb. 1961)

.

4404. Vapor-phase gamma-radiolysis of azomethane,

L. Stief and P. Ausloos. J. Phys. Chem. 65, 877-

881 (1961). 4405. Vapor-phase photolysis of formic acid, R. Gordon and P. Ausloos. J. Chem. Phys. 65, 1033

(1961)

.

4406. Variations of [pi] 5577 A emission in the upper atmosphere, F. E. Roach. Ann. Geophys. 17, 172-180 (Apr. -June 1961). 4407. VHF and UHF signal characteristics observed

on a long knife-edge diffraction path, A. P. Barsis and R. S. Kirby. IRE Natl. Conv. Record,

p. 17-34 (1961). 4408. VLF phase perturbations associated with meteor show ionization, C. Chilton. J. Geophys.

Res. 66, No. 2, 379-383 (Feb. 1961).

4409. Welded but.t joints with fine wires, L. Martz.

Rev. Sci. Instr. 32, No. 8, 990-991 (Aug. 1961).

4410. What is the best value? W. J. Youden. J. Wash. Acad. Sci. 51, No. 6, 95-97 (Oct. 1961).

4411. Wind resistance of asphalt shingle roofing,

W. C. Cullen. Natl. Acad. Sci. -Natl. Res. Council, p. 33-42 (1961). 4412. Winter thermal radiation studies in Yellowstone Park, D. M. Gates. Science 134, No. 3471, 32-35 (July 7, 1961)

.

4413. Worldwide patterns of ionospheric blackout

occurrence, V. Agy and K. Davies. J. Atmospheric

and Terrest. Phys. 23, 202-205 (Dec. 1961). 4414. Young's modulus of single crystal corundum

from 77°K to 850°K, J. B. Wachtman, Jr., W. E. Tefft, and D. G. Lamb, Jr. Book, Mechanical

Properties of Engineering Ceramics, p. 221-223 (Interscience Publ. Inc., New York, N. Y., 1961).

316
1962

4415. A calculus for factorial arrangements, B. Kurkjian and M. Zelen. Ann. Math. Stat. 33,600-619 (June 1962). 4416. A comparison of direct and Servo methods for utilizing cesium beam resonators as frequency

standards, R. E. Beehler, W. R. Atkinson, L. E. Heim, and C. S. Snider. Intern. Conf . Precision Electromagnetic Measurements, Boulder, Colo., 1962), IRE Trans. Instr. 1-11, Nos. 3 and 4

,

231-238 (Dec. 1962).

4417. A connection between Tauberian theorems and

normal functions, G. T. Cargo. Bull. Am. Math.

Soc. 68, No. 4, 400-401 (July 1962). 4418. A controller for maintaining a constant rate

of vaporization in fractional distillation,

E. C. Kuehner and R. T. Leslie. Anal. Chem. 34, No. 9, 1155-1157 (Aug. 1962). 4419. A correction to the exospheric electron density estimate using the nose whistlers of March

19, 1959, J. H. Pope. J. Geophys. Res. 67, No. 1, 412 (Jan. 1962).

4420. A cryostat for tensile tests in the temperature range 300° to 4°K, R. P. Reed. (Proc. 1961 Cryogenic Eng. Conf.) Book, Advances in Cryogenic Engineering 7, Paper K-3, 448-454 (Plenum Press,

Inc., New York, N. Y. , 1962).

4421. A derivation of the relaxation spectrum rep- resentation of mechanical response function,

R. S. Marvin. Repts. on Progr . in Polymer Phys

.

Japan 5, 56-58 (1962). 4422. A differential thermocouple voltmeter, J. E. Griffin and F. L. Hermach. AIEE Trans. Pt . I. Communications and Electronics, Article No. 62-

817, No. 63, p. 339-344 (Nov. 1962).

4423. A high speed ratio pyrometer, G. A Hornbeck.

Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 2, 425-428 (Reinhold

Publ. Corp., New York, N. Y. , 1962). 4424. A low-impedance Maxwell bridge for measuring

toroidal magnetic materials from 1 kc to 100 kc,

A. L. Rasmussen and R. C. Powell. Proc. IRE 50, No. 12, 2505 (Dec. 1962).

4425. A method of measuring shear modulus from -424

to 70°F, R. P. Mikesell and R. M. McClintock.

(Proc. 1961 Cryogenic Eng. Conf.), Book, Advances

in Cryogenic Engineering 7, Paper K-ll, 509-513

(Plenum Press Inc., New York, N. Y. , 1962). 4426. A model of the atmosphere and the ionosphere

in the E and Fl Regions, R. B. Norton, T. E. VanZandt, and J. B. Denison. Proc. Intern. Conf. Ionosphere, London, 1962, p. 26-34 (The Institute

of Physics and the Physical Society, London, England 1962)

.

4427. A modulated sub-carrier technique of measuring

microwave attenuation, G. E. Schafer and R. R. Bowman. Elec. Engrs. 109, Pt . B, Suppl . 23, 783-

786 (1962). 4428. A molecular orbital study of the geometry of H0 2 , M. E. Boyd. J. Chem. Phys. 37, No. 6, 1317-

1325 (Sept. 1962). 4429. A National Bureau of Standards gas thermometer, L. A. Guildner. Book, Temperature, Its Measurement and Control in Science and Industry

3, Pt. 1, 151-155 (Reinhold Publ. Corp., New York,

N. Y., 1962). 4430. A network transfer theorem, G. F. Montgomery.

IRE Trans. Audio AU-10, No. 3, 88 (May- June 1962).

4431. A neuron model which performs analog functions, D. R. Boyle. Proc. San Diego Symp. Bio- medical Engineering, San Diego, Calif., 1, No. 1 256-263 (June 19-21, 1962). 4432. A new ionospheric multipath reduction factor

(MRF) , R. K. Salaman. IRE Trans. Commun. Systems

CS-10, No. 2, 221-222 (June 1962). 4433. A note on the heights of the different IGY types of E , S. C. Gladden. Book, Ionospheric Sporadic E? Ed. E. K. Smith and S. Matsushita,

p. 178-181 (Pergamon Press Inc., New York, N. Y. 1962). 4434. A note on the propagation of electromagnetic

pulses over the earth's surface, J. R Wait.

Can. J. Phys. 40, 1264-1268 (1962). 4435. A procedure for estimating eignevalues,

N. W. Bazley and D. Fox. J. Math. Phys. 3, 469-

471 (May- June 1962). 4436. A property of linear frequency modulation,

A. J. Goldman. Proc. IRE 50, No. 7, 1711 (July

1962)

.

4437. A proposed measurement of the velocity of light employing the Mossbauer effect (abstract),

R. C. Mockler. IRE Trans. Instr. I- 11, 311-312

(Dec. 1962). 4438. A rapid method of estimating the order of chemical reactions, J. H. Flynn. Chem. Eng. 69, 137-140 (Aug. 1962). 4439. A realistic diatomic potential function,

H. W. Woolley. J. Chem. Phys. 37, No. 6, 1307-

1316 (Sept. 1962). 4440. A sing-around velocimeter for measuring the speed of sound in the sea, M. Greenspan and

C. Tschiegg. Book, Underwater Acoustics, Lecture

5, p. 87-101 (Plenum Press Inc., New York, N. Y. 1962)

.

4441. A specimen for use in investigating the stress-corrosion cracking of metals at elevated

temperatures, H. L. Logan. Mater. Res. Std. 2, No. 2, 98-100 (Feb. 1962). 4442. Unassigned.

4443. A statistical comparison of the wearing characteristics of two types of dollar notes,

E. B. Randall, Jr., and J. Mandel. Mater. Res.

Std. 2, No. 1, 17-20 (Jan. 1962). 4444. A string language for symbol manipulation

based on ALGOL 60, J. H. Wegstein and W. W. Youden. Commun. Assoc. Computing Mach. 45, No. 54-61 (Jan. 1962).

4445. A study of electronically excited hydroxyl

radicals in the H+03 atomic flame, H. P. Broida.

J. Chem. Phys. 36, No. 2, 444-448 (Jan. 1962).

4446. A study of F2 layer effects as with a Dopple

technique, K. Davies, J. M. Watts, and D. H. Zacharison. J. Geophys. Res. 67, No. 2, 601-609

(Feb. 1962). 4447. A study of radio wave scattering from

sporadic E near the magnetic equator, K. L. Bowles and R. S. Cohen. Book, Ionospheric Sporadic E, Ed. E. K. Smith and S. Matsushita,

p. 51-77 (Pergamon Press Inc., New York, N. Y. 1962).

4448. A study of solar activity associated with

polar-cap absorption, C. S. Warwick and M. W. Haurwitz. J. Geophys. Res. 67, No. 4, 1317-1332

(Apr. 1962).

317
1962 4449. A study of solar activity associated with

polar cap absorption (abstract), C. S. Warwick

and M. Wood. Polar Cap Absorption Conf., Kiruna, Sweden, Aug. 8-11, 1960, Arkiv Geofysik 3, No.

21, 457 (1962). 4450. A study of stability of high temperature platinum resistance thermometers, J. P. Evans

and G. W. Burns. Proc. Advisory Committee on Thermometry to the Intern. Comm. on Weights and

Measures, 6th Session, p. 62-63 (Sept. 26-27,

1965): Book, Temperature, Its Measurement and Control in Science and Industry, 3, Pt . 1, 313-

318 (Reinhold Publ . Corp., New York, N.Y., 1962).

4451. Unassigned.

4452. A study of the chemical and physical prop- erties of magnetic recording tape, F. Nesh and

R. F. Brown, Jr. IRE Trans. Audio AU-10, No. 3, 70-71 (May- June 1962). 4453. A survey of carbon-carbon bond lengths,

D. R. Lide, Jr. Tetrahedron 17, 125-134 (1962). 4454. A survey of microwave power-measurement

techniques employed at the National Bureau of Standards, G. F. Engen. Inst Elec. Engrs. 109,

Pt. B, Suppl. 23, 734-739 (1962). 4455. Unassigned.

4456. A survey of polar cap absorption events

(solar proton events) in the period 1952 through

1960, D. K. Bailey and J. M. Harrington. (Proc. Intern. Conf. on Cosmic Rays and the Earth Storm),

J. Phys. Soc. Japan 17, Suppl. A, Pt . II, 334-336

(1962). 4457. A theoretical study of sporadic-E structure

in the light of radio measurements, K. Tao, Book, Ionospheric Sporadic E, Ed. E. K. Smith and

S. Matsushita, p. 235-257 (Pergamon Press Inc., New York, N. Y. , 1962)

.

4458. Unassigned.

4459. A variable-parameter direct-current switching

filter, G. F Montgomery. Proc. IRE 50, No. 9, 1986 (Sept. 1962).

4460. Abridged color reproduction, C. S. McCamy. Encyclopedia of Electronics, p. 844-845 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

4461. Absolute isotopic abundance ratio and the atomic weight of chlorine, W. R. Shields, T. J. Murphy, E. L. Garner, and V. H. Dibeler. J. Am. Chem. Soc. 84, 1519-1522 (1962). 4462. Absolute magnetic susceptibilities by the Gouy and the Thorpe- Senftie methods, G. A. Candela and R. E. Mundy. IRE Trans. Instr.

1-11, Nos. 3 and 4, 106-109 (Dec. 1962).

4463. Absolute measurement of temperatures of microwave noise sources, A. J. Estin, C. L. Trembath, J. S. Wells, and W. C. Daywitt. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 997-1003 (Rein- hold Publ. Corp., New York, N. Y. , 1962). 4464. Absolute microwave refractometer , M. J. Vetter and M. C. Thompson, Jr. Rev. Sci

.

Instr. 33, 656-660 (June 1962).

4465. Absolute temperatures determined from measure- ments of the velocity of sound in helium gas,

G. Cataland and H. H. Plumb, Proc. Advisory Com- mittee on Thermometry to the Intern. Bureau of Weights and Measures, 6th Session, p. 175 (Sept. 26-27, 1962). 4466. Absorption and scattering of photons by de- formed nuclei, E. G. Fuller. Proc. 2d All-Union

Conf. Nuclear Reactions at Low and Intermediate

Energies, 1960, p. 419-434 (Russian Academy of Science, USSR, 1962).

4467. Absorption bands of carbon dioxide from 2.8

- 4.2M, E. K. Plyler, E. D. Tidwell, and W. S. Benedict. J. Opt. Soc. Am. 52, No. 9, 1017-1022,

(Sept. 1962). 4468. Absorption spectrum of CF 2 trapped in an argon matrix, A. M. Bass and D. E. Mann. J. Chem.

Phys. 36, No. 12, 3501-3502 (June 15, 1962).

4469. Absorption spectrum of carbon vapor in solid argon at 4 K and 20 K, R. L. Barger and H. P. Broida. J. Chem. Phys. 37, No. 5, 1152-1153

(Sept. 1, 1962). 4470. Accuracy of analytical procedures, W. J. Youden, J. Assoc. Offic. Agri. Chem. 45, No. 1, 169-173 (Feb. 196 2). 4471 . Achievement of measurement agreement among electrical standards laboratories, F. D. Weaver.

Instr. Control System 36, 128-131 (July 1962). 4472. Acoustical interferometer employed as an in- strument for measuring low absolute temperatures,

G. Cataland and H. H. Plumb. J. Acoust. Soc. Am.

34, No. 8, 1145-1146 (Aug. 1962). 4473. a-D-glucose-l-C 14

, H. S. Isbell, N. B. Holt, and H. L. Frush. Book, Methods of Carbohydrate Chemistry I, 276-280 (Academic Press, Inc., New

York, N. Y. , 1962). 4474. a-D-mannose from ivory-nut meal, H. S. Isbell and H. L. Frush. Book, Methods of Carbohydrate Chemistry I, 145-147 (Academic Press, Inc., New

York, N. Y. , 1962). 4475. a-L-galactose, H. L. Frush and H. S. Isbell. Book, Methods of Carbohydrate Chemistry I, 127- 130 (Academic Press, Inc., New York, N. Y. , 1962). 4476. American Dental Association specifications

for dental materials 1962-1963, G. C. Paffen- barger, J. W. Stanford, and W. T. Sweeney. Am. Dental Assoc., 5th ed., Ill pages (Chicago, 111. 1962).

4477. An adjustable instrumentation bench for Physical Laboratories, D. W. Schulze and

W. J. Foote. Rev. Sci. Instr. Notes 33, No. 12, 1467 (Dec. 1962).

4478. An aluminum magnet cooled with liquid hydrogen, J. R. Purcell. (Proc. Intern. Conf. High Magnetic Fields), Book, High Mangetic Fields,

p. 166-169 (Mass. Inst. Technol . Press and John Wiley and Sons, Inc., New York, N. Y. , 1962). 4479. An application of the peek-a-boo principle to information retrieval, J. Stern. Proc. Symp. Materials Information Retrieval, p. 93-115 (Nov. 28-29, 1962). 4480. An auroral zone electron precipitation event and its relationship to a magnetic bay, R. R. Brown and W. H. Campbell. J. Geophys. Res. 67,

No. 4, 1357-1366 (Apr. 1962).

4481. An electrically controlled guarded flat plate

calorimeter, D. Cline and R. H. Kropschot. (Proc. 1691 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering 7, Paper L-5, 534-538

(Plenum Press, Inc., New York, N. Y. , 1962).

4482. An equation of state for calculating the thermodynamic properties of helium at low temp- eratures, R. D. McCarty and R. B. Stewart.

(Second Symp. Thermophysical Properties, Princeton, N. J., Jan. 24-26, 1962), Book, Progress in International Research on Thermodynamic and Transport Properties, p. 107-117 (Academic Press,

Inc., New York, N. Y. , 1962).

318
1962

4483. An experimental investigation of the in- dividual boiling and condensing heat transfer coefficients for hydrogen, D. E. Drayer and

K. D. Tinunerhaus. (Proc. 1961 Cryogenic Eng. Conf . ) Book, Advances in Cryogenic Engineering

7, Paper J-6 , 401-412 (Plenum Press, Inc., New

York, N. Y., 1962). 4484. An experimental investigation of the scintillation of radio stars observed at fre- quencies of 223 Mc/s and 456 Mc/s from a location close to the auroral zone, C. G. Little, G. C. Reid, E. C. Stiltner, and R. P. Merritt. J. Geophys. Res. 67, No. 5, 1763-

1784 (May 1962).

4485. An improved resistance thermometer bridge,

J. P. Evans, Book, Temperature, Its Measurement

and Control in Science and Industry 3, Pt . 1, 285-289 (Reinhold Publ. Corp., New York, N. Y.

,

1962)

.

4486. An introduction to flame photometry and a review of recent studies, M. Margoshes. Book, Physical Techniques in Biological Research, ed.

W. L. Nastok, 4, Chapt . 5,215-260 (Academic

Press, Inc., New York, N. Y. , 1962).

4487. An LCAO-MO-SCF study of the structure of H0 2 , M. E. Boyd. Intern. Symp. Molecular

Structure and Spectroscopy, Sci . Council Japan

B, B404-1-B404-4 (1962). 4488. Analysis of rotation errors of rotary vane waveguide attenuators, W. Larson. IRE Intern. Conv. Record Pt . Ill, p. 213-219 (1962). 4489. Analysis of the hydroxyl radical vibration- rotation spectrum between 3 , 900°A and 15,000°A,

A. M. Bass, and D. Garvin. J. Mol . Spectry. 9, No. 2, 114-123 (Aug. 1962). 4490. Analytical chemistry of polymers. Part II. Analysis of molecular structure and chemical

groups, G. M. Kline. Book, 619 pages. Part III. Identification procedures and chemical analysis,

Book, 566 pages. Vol. XII of High Polymer Series

(Interscience Publ. Inc., New York, N. Y. , 1962).

4491. Anisotropics in angular distributions of molecular dissociation products, G. H Dunn. Phys.

Rev. Letters 8, 62-64 (Jan. 15, 1962).

4492. Annual report for IAU commission 14, spectroscopy, C. Moore. Trans. Intern. Astron. Union XIA97 , 208 (1962). 4493. Antenna beam elevation angle for control of tropospheric interference between space/earth

and terrestrial stations, S. G. Lutz and W. J. Hartman. WESCON Paper 4.3 (Los Angeles, Calif.

Aug. 21, 1962). 4494. APPA-TAPPI reference material program. I. Inter-laboratory investigation of TAPPI standard T 414 m-49, internal tearing resistance

of paper, T. W. Lashof. TAPPI 45, No. 8, 656-

663 (1962) . 4495. Application of distillation techniques to radiochemical separations, J. R. DeVoe. Natl.

Acad. Sci. -Natl. Res. Council Nuclear Science

Series, Radiochemical Techniques NAS-NS3108

(Aug. 1962).

4496. Application of ref lectometer techniques to accurate reflection measurements in coaxial

systems, R. W. Beatty and W. J. Anson, Proc.

Inst. Elec. Engr . 109-B, No. 46, 345-348

(July 1962). 4497. Application of the stroboscopic method to

a nonlinear equation of nonautonornous character,

A. Ghaffari. Am. Math. Soc. Notices 9, No. 60, 123 (Apr. 1962).

4498. Applications of resistance thermometer to calorimetry, G. T. Furukawa. Book, Temperature,

Its Measurement and Control in Science and In- dustry, 3, Pt. II, 317-328 (Reinhold Publ. Corp., New York, N. Y. , 1962)

.

4499. Approximations to the moments of the sample

median, M. M. Siddiqui . Ann. Math. Stat. 33, No.

1, 157-168 (Mar. 1962). 4500. Atmospheric research, D. M. Gates. Americana

Annual 1962, p. 59-60 (Americana Corp., Chicago,

(111., 1962). 4501. Atomic frequency standards at the National Bureau of Standards, J. M. Richardson, R. E. Beehler, R. C. Mockler, and R. L. Fey. Comite

Consultatif, Definition de la Seconde Aupres du Comite Intern, des Poids et Mesures, p. 57-67

(Sept. 1962). 4502. Attempts to eliminate fatigue damage by heat treatment, J. A. Bennett. Am. Soc. Metals Trans. Quart. Tech. Notes 55, No. 2, 362-363 (June 1962)

.

4503. Audio-frequency compliances of prestressed

quartz, fused silica, and aluminum, M. Greenspan and C. Tschiegg. Book, The Organization

Committee of the Fourth International Congress

on Acoustics, Pt . I, Paper No. P12 (Copenhagen,

Denmark, 1962).

4504. Auroral-zone geomagnetic micropulsations

with period of 5 to 30 seconds, W. H. Campbell

and S. Matsushita. J. Geophys. Res. 67, No. 2, 555-573 (Feb. 196 2). 4505. Average decay laws of VLF fields, J. R. Wait.

Proc. IRE 50, No. 1, 53-56 (Jan. 196 2). 4506. Band spectrum analysis of mercury hydride,

T. L. Porter. J. Opt. Soc. Am. 52, 1201 (1962). 4507. Behavior of revivified char in storage,

J. Redd and F. G. Carpenter. Proc. 7th Tech. Session on Bone Char 1961, p. 223 (Bone Char Research Project, Inc., Charlestown, Mass., 1962)

.

4508. Bolometric microwave power calibration

techniques at NBS,, R. F. Desch and R. E. Larson.

Proc. ISA 17th Annual Instrument-Automation

Conf. and Exhibit (Oct. 1962). 4509. Unassigned.

4510. Branched-chain higher sugars, R. Schaffer

and H. S. Isbell. Book, Methods of Carbohydrate

Chemistry I, 273-275 (Academic Press, Inc., New

York, N. Y., 1962). 4511. Burning behavior of building finish materials: two test methods, A. F. Robertson. Spec. Publ. Feder. Fire Council, p. 21-35 (Apr. 1962).

4512. Calibration of vibration pickups at large amplitudes, E. Jones, S. Edelman, and K. S. Sizemore. J. Acoust. Soc. Am. Errata 34, No. 3, 355

(Mar. 1962).

4513. Calorimetric calibration of the electrical energy measurement in an exploding wire experiment, D. H. Tsai and J. H. Park. (Proc. 2d Conf. Exploding Wire Phenomenon, Boston, Mass., Nov. 1961), Book, Exploding Wires, Ed. W. G. Change

and H. K. Moore 2, 97-107 (Plenum Press, Inc.,

"New York, N. Y. , July 1962).

4514. Catalytic effects of thermocouple materials,

L. 0. Olsen. SAE J. Paper No. 524G, 70, No. 5, 94 (May 1962)

.

4515. Celsius vs centrigrade: the nomenclature of

the temperature scale of science, H. F. Stimson. Science 136, No. 3512, 254-255 (Apr. 1962).

319
1962

4516. Characteristics of resistance strain gages,

R. L. Bloss. Book, Semiconductor and Conventional Strain Gages, Ed. M. Dean, III and R. D. Douglas, Chapt. VIII, p. 123-142 (Academic Press

Inc., New York, N. Y. , Oct. 1962). 4517. Characteristics of some turbine handpieces,

D. F. Taylor, R. R. Perkins, and J. W. Kumpula.

J. Am. Dental Assoc. 64, No. 6, 794-805 (June 1962)

.

4518. Charge-storage techniques for pulse-height

analysis, L. Costrell and R. E. Brueckmann. Nuclear Electronics (Intern. Atomic Energy

Agency) II, 29-39 (1962). 4519. Chemical research at the universities in the Washington area, W. K. Wilson. Capital Chemist

12, No. 3, 103, 105, 108 (Apr. 1962).

4520. Chemically induced vibrational excitation

hydroxyl radical emission in the 1-3 micron

region producted by the H+03 atomic flame,

D. Garvin, H. Broida, and H. Kostkowski. Erratum,

J. Chem. Phys. 37, No. 1, 193 (July 1962).

4521. Chilled-air distribution in refrigerated

trailers, P. R. Achenbach. Suppl. Bull. Intern.

Inst. Refrigeration, p. 9 (1961-1962).

4 522. Chromatography, J. M. Cassel. Book, Analytical Chemistry of Polymers, ed. G. M. Kline,

Pt. II, Chapt. 10, 359-404 ( Interscience Publ.

Inc., New York, N. Y. , 1962).

4523. Chromium plating by thermal decomposition of dicumene chromium, W. H. Metzger, Jr. Plating

49, No. 11, 1176 (Nov. 1962).

4524. Collective correlation of plasma, C. M. Tchen. Proc. 2d Conf. Electronics, Czechoslovak

J. Phys. XXI, No. 5-6, 516-521 (Apr. 1962).

4525. Collision-induced absorption in compressed

gases. II. Molecular electric quadrupole

moments, G. Birnbaum and A. A. Maryott. J. Chem.

Phys. 36, 2032-2036 (Apr. 1962).

4526. Collision-induced microwave absorption in compressed gases. I. Dependence on density, temperature, and frequency in C02 , A. A. Maryott

and G. Birnbaum. J. Chem. Phys. 36, No. 8, 2026-

2031 (Apr. 1962).

4527. Color tests, G. M. Brauer and S. B. Newman.

Book, Analytical Chemistry of Polymers, ed.

G. M. Kline, Pt . Ill, Chapt. 2, 141-259 (Inter- science Publ. Inc., New York, N. Y. , 1962). 4528. Color tests for antioxidants, E. J. Parks,

L. T. Milliken, and F. J. Linnig. Rubber Age 92, No. 2, 257-261 (Nov. 1962). 4529. Colorimetric determination of 5 , 6-dichloro- 2-benzoxazolinone in leathers, S. Dahl . J. Am. Leather Chemists Assoc. 56, No. 1, 15-25 (Jan. 1962).

4530. Comments on "a new precision low-level bolometer bridge," G. F. Engen. Proc. IRE Letter

50, No. 9, 1997 (Sept. 1962).

4531. Comments on paper by W. D. Westfall "Prediction of VLF diurnal phase changes and solar flare effect," J. R. Wait. J. Geophys. Res. 67, No. 2, 916-917 (Feb. 1962). 4532. Communication between man and machine, J. E. Karlin and S. N. Alexander. Proc. IRE 50, No. 5, 1124-1128 (May 1962). 4533. Communication in electronics, J. Stern, Signal 16, No. 10, 78-79 (June 1962). 4534. Comparative measurements on polystyrene with

three different equilibrium ul tracentrifuges , D. Mclntyre, L. C. Williams, P. E. ilexner, H. G.

Kim, F. N. Weber, R. F. Bunting and D. W. Kupke,

J. Polymer Sci. 62, No. 174, S136-S140 (Dec. 1962). 4535. Comparison of standard and microtests for international rubber hardness, R. D. Stiehler

and F. L. Roth, Mater. Res. Std. 2, No. 5, 388-

391 (May 1962). 4536 . Comparison of the relative acidic strengths

of the isomeric dinitrophenols in benzene and

water, M. M. Davis. J. Am. Chem. Soc. 84, No. 19, 3623-3627 (Oct. 1962).

4537. Comparison of the rubidium-87 and proton

Zeeman transition frequencies in the earth's magnetic field, P. L. Bender. Phys. Rev. 128,

No. 5, 2218-2221 (Dec. 1, 1962). 4538. Comparison of United States and Canadian

free-air ionization chambers, J. H. Aitken,

R. DeLaVergne, W. H. Henry, and T. P. Loftus.

Brit. J. Radiol. 35, No. 409, 65-70 (Jan. 1962). 4539. Complex formation of monomeric amides with

lithium perchlorate, A. F. Diorio, E. R. Lip- pincott, and L. Mandelkern. Nature 194, No. 4848, 1296-1297 (Sept. 29, 1962). 4540. Computer simulation of traffic on nine blocks

of a city street, M. C. Stark. (Proc. 41st Annual

Meeting Highway Research Board, Jan. 8-12, 1962), Highway Res. Board Bull. 356, Publ. No. 1051, p. 40 (Natl. Acad. Sci-Natl. Res. Council, Wash.

D. C. , 1962)

.

4541. Computing and data processing capabilities

in the Soviet Union, S. N. Alexander, J. Digest Automatic Data Processing, p. 1-22 (1962). 4542. Conditions for second order waves in hypo- elasticity, B. Bernstein, Trans. Soc. Rheol. 6, No. 1, 263-273 (1962). 4543. Conductive floors, F. L. Hermach. Intern. Assoc. Electrical Inspectors News Bull, p. 40-

44 (July 1962)

.

4544. Conformation and frictional properties of polystyrene in dilute solutions, D. Mclntyre,

A. M. Wims, L. C. Williams, and L. Mandelkern.

J. Phys. Chem. 66, No. 10, 1932-1940 (Oct. 1962). 4545. Constants of the interpolation formula for platinum resistance thermometers, J. L. Riddle.

Proc. Advisory Committee on Thermometry to the

Intern. Bureau of Weights and Measures, 6th

Session, p. 198-201 (Sept. 26-27, 1962). 4546. Constitution diagram for 16 percent Cr-2

percent Ni stainless steel, C. R. Johnson and

S. J. Rosenberg. Trans. Quart. Am. Soc. Metals

55, No. 2, 277-286 (June 1962).

4547. Convergence to normality of powers of normal random variable, N. C. Severo and L. J. Montzingo, Jr. Bull. ISI XXXIX, No. 2, 491-500

(1962). 4548. Coring an electroform, W. H. Metzger, Jr. Plating 49, No. 8, 880 (Aug. 1962). 4549. Corrected calculations of sound absorption

in non-associated liquids, R. E. Nettleton.

J. Acoust. Soc. Am. 34, No. 3, 350 (Mar. 1962). 4550. Correction to "Doppler studies of the iono- sphere with vertical incidence," K. Davies. Proc. IRE 50, No. 6, 94 (June 1962). 4551. Correlation factors for impurity diffusion - Fee lattice, J. R. Manning. Phys. Rev. 128, No.

5, 2169-2174 (Dec. 1962). 4552. Correlation of factors influencing the pressures generated in multi-anvil devices,

J. C. Houck and U. 0. Hutton. ASME Paper 62-WA254, p. 1-9 (Nov. 1962). 320
1962

4553. Covers and packings in a family of sets,

J. Edmonds. Bull. Am. Math. Soc . 68, No. 5, 494- 499 (Sept. 1962). 4554. Creep of pure-gum rubber vulcanizates from indentation-time measurements, L. A. Wood and

F. L. Roth. Fourth Rubber Tech. Conf . , London, England, 10 pages (1962). 4555. Criteria for the reality of matrix eigenvalues, M. P. Drazin and E. V. Haynsworth.

Z. Math. 78, 449-452 (Mar. 1962). 4556. Critical opalescence of polystyrene solutions, D. Mclntyre, A. M. Wims, and M. S. Green.

J. Chem. Phys. 37, No. 12, 3019-3020 (Dec. 15, 1962)

.

4557. Critical review of sugar color and turbidity

measurements, F. G. Carpenter and V. R. Deitz. Sugar Ind. Tech. 21, Paper 65, 32-52 (1962). 4558. Crossllnking of polymers induced by excited

species, L. A. Wall and R. B. Ingalls. J. Polymer Sci. Letter 62, No. 173, S5-S6 (Nov. 1962).

4559. Cryogenic testing of structural solids,

R. M. McClintock. Eng. Quart. 2 No. 1, 28-35

(Feb. 1962). 4560. Current-limited rectifiers, G. F. Montgomery.

Proc. IRE 50, No. 2, 190-193 (Feb. 1962).

4561. Current status of the statistical theory of mass spectra, H. M. Rosenstock and M. Krauss.

Book, Advances in Mass Spectrometry 2, 251-284 (Pergamon Press Inc., London, England, 1962). 4562. Current trends and prospects in cryogenics,

a review of the 1962 Cryogenic Engineering Conference, R. B. Stewart, R. V. Smith, and T. R. Strobridge. Cryogenics 2, No. 6, 321-324 (Dec. 1962)

.

4563. Deactivation of Hg(6 3 Pi) by CO and N 2 , M. D. Scheer and J. Fine. J. Chem. Phys. 36, No. 5, 1264-1267 (Mar. 1962)., 4564. Decibels return loss to magnitude of voltage reflection coefficient, R. W. Beatty. Microwave Engineer's Handb. and Buyer's Guide, p. TD-221-

TD225 (Dec. 1962). 4565. Departure from the steady state in two- intermediate enzyme reactions, H. Shin, Trans. Faraday Soc. 58, pt . 7, No. 475, 1439-1450

(July 1962).

4566. Degradation of polymers, L. A. Wall and

J. H. Flynn. Rubber Chem. Tech. 35, No. 5, 1157-

1221 (Dec. 1962).

4567. Dependence of interval between flare and associated sudden commencement-storm on pre- storm conditions, M. W. Haurwitz. J. Geophys.

Res. Letter 67, No. 7, 2979-2982 (July 1962).

4568. Dependence of the ionospheric F region on

the solar cycle, J. W. Wright. Nature 194, No. 4827, 461-462 (May 1962). 4569. Design of an interfero-metric oil manometer for vacuum measurements, A. M. Thomas,

D. P. Johnson, and J. W. Littie. j.962 Trans. Ninth Natl. Vacuum Symp. , American Vacuum

Society, Pt . Ill, p. 468-473 (1962). 4570. Design requirements for mechanical systems

in protective shelters, P. R. Achenbach. Heating, Piping Air Conditioning 34, No. 2, 73-79 (Feb. 1962)

.

4571. Desorption of calcium sulfate from revivified bone char, H. M. Rootare, V. Deitz, and

F. G. Carpenter. Proc. 7th Tech. Session on Bone Char, 1961, p. 293 (Bone Char Research

Project Inc., Charlestown, Mass., 1962).

4572. Determination of isotope effects by "double labeling" oxidation of D-glucose with iodine,

H. S. Isbell, L. T. Sniegoski, and H. L. Frush.

Anal. Chem 34, No. 8, 982-984 (July 1962).

'4573. Determination of lead in leaded steels by X-ray spectroscopy, B. A. Kilday and R. E. Michaelis. Appl. Spectry. 16, No. 4, 136-138

(1962). 4574. Determination of molecular weights and of molecular weight distributions, in unsolved

problems in polymer science, D. Mclntyre. ASD

Tech. Report 62-283, p. 71-74 (Mar. 1962).

4575. Determination of oxidation rates of air- blown asphalts by infrared spectroscopy, J. R. Wright and P. G. Campbell. J. Appl. Chem. 12, 256-266 (June 1962). 4576. Determination of source self -absorpt ion in the standardization of electron-capturing radionuclides, S. B. Garfinkel and J. M. R. Hutchinson. Inter. J. Appl. Radiation Isotopes 13, 629- 639 (1962). 4577. Determination of the dissociation equilibria

of water by a conductance method, H. C. Duecker

and W. Haller. J. Phys. Chem. 66, No. 2, 225-

229 (Feb. 1962). 4578. Device for chemically thinning crystals for transmission electron microscopy, H. B. Kirk- patrick and S. Amelinckx. Rev. Sci. Instr. 33, No. 4, 488-489 (Apr. 1962). 4579. D-glucose-6-C14 and L-idose-6-C1

4

, R. Schaffer and H. S. Isbell. Book, Methods of Carbohydrate Chemistry I, 281-285 (Academic

Press, Inc., New York, N. Y. , 1962). 4580. D-gulose, H. S. Isbell. Book, Methods of Carbohydrate Chemistry I, 135-136 (Academic

Press, Inc., New York, N. Y. , 1962).

4581. Unassigned.

4582. Dielectric loss in "non-polar" polymers,

A. J. Curtis. J. Chem. Phys. 36, No. 12, 3500

(June 15, 1962). 4583. Dielectric properties of solid polymers,

A. J. Curtis. SPE Trans. 2, No. 1, 82-85 (Jan. 1962).

4584. Differential thermal analysis, H. E. Kis- singer and S. B. Newman. Book, Analytical

Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 4, 159-179 ( Inter science Publ. Inc., New

York, N. Y. , 1962)

.

4585. Digital pattern recognition by moments,

F. L. Alt. J. Assoc. Computing Mach. 9, No. 2, 240-258 (Apr. 1962); Book, Optical Character

Recognition, Ed. G. L. Fischer, D. K. Pollack,

B. Raddick, and M. E. Stevens, Pt . II, p. 153-

179 (Spartan Books, Wash. D. C. , 1962). 4586. Dimensional changes in complete dentures on

drying, wetting, and heating in water, J. B. Woelfel, G. C. Paf f enbarger , and W. T. Sweeney.

J. Am. Dental Assoc. 65, No. 4, 495-505 (Oct. 1962)

.

4587. Dimensional changes in dentures, G. C. Paf- fenbarger, J. B. Woelfel, and W. T. Sweeney. Dental Practitioner XIII, No. 2, 64-69 (Oct. 1962)

.

4588. Dimensional changes in fibrous macromolecules: the system a-keratin LiBr,

L. Mandelkern, J. C. Halpin, A. F. Diorio, and

A. S. Posner. J. Am. Chem. Soc. 84, No. 8, 1383-1391 (Apr. 1962).

321
196 2 4589. Unassigned.

4590. Direct measurement of line intensities and widths in the first overtone band of CO, H. J. Kostkowski and A. M. Bass. J. Quant. Spectry. Radiative Transfer 1, 177-184 (1962). 4591. Discussion of "characteristics of sorption

and expansion isotherms of reactive limestone aggregate," by Feldman and Sereda, C. M. Hunt,

L. A. Tomes, R. G. Pike, and D. Hubbard. Proc. Am Concrete Inst. 59, 815-818 (Mar. 1962).

4592. Discussion of electroforming solutions,

J. P.Young. ASTM Spec. Tech. Publ. 318, 26 (1962). 4593. Discussion of errors of a recommended stand- ard resistor-noise test system, N. Newman and

G. T. Conrad, Jr. IRE Trans. Component Parts

CP-9, No. 4, 180-192 (Dec. 1962).

4594. Discussion of Feldman' s and Secreda's Paper "Characteristics of sorption and expansion iso- therms of reactive limestone aggregate,"

C. M. Hunt, L. A. Tomes, R. G. Pike, and

D. Hubbard. J. Am. Concrete Inst. 59, 815-818

(Mar. 1962).

4595. Discussion of paper "enameled cold end surface for low temperature service," J. C. Richmond. J. Eng. Power Trans. ASME Series A

(Oct. 1962).

4596. Discussion of the paper "thermophysical

properties of zirconium hydrides," by R. L. Beck, T. B. Douglas. Trans. Am. Soc. Metals

55, 1075-1076 (1962). ' 4597. Dislocation loops in deformed copper, A. W. Ruff, Jr. Proc. 5th Intern. Congress Electron

Microscopy, p. J-10 (Academic Press Inc., New

York, N. Y. , 1962). 4598. Dislocations and chemical etch pits in copper, A. W. Ruff, Jr. J. Appl. Phys. 33, No.

12, 3392-3400 (Dec. 1962). 4599. Displacement and strain energy distribution

in a longitudinally vibrating cylindrical rod with a viscoelastic coating, P. Hertelendy. J. Appl. Mech. Trans. ASME 29, Series E, No. 1, 47-52 (Mar. 1962); J. Appl. Mech. 61-WA-30

(1962). 4600. Dissociation constant of t-butylammonium

ion and related thermodynamic quantities from

5 to 35°, H. B. Hetzer, R. A. Robinson, and R. G. Bates. J. Phys. Chem. 66, No. 12, 2696-2698

(Dec. 1962). 4601. Dissociation constant of 2-ammonium-2-

methyl-1 , 3-propanediol in water from 0 to 50 and related thermodynamic quantities, H. B. Hetzer and R. G. Bates. J. Phys. Chem. 66,

No. 2, 308-311 (Feb. 1962). 4602. Distillation analysis, R. T. Leslie and E. C. Kuehner. Anal. Chem. Suppl. 34, No. 5, 50R-56R

(Apr. 1962).

4603. Distribution of total service time for a fixed observation interval, W. S. Connor and

N. C. Severe J. Am. Stat. Assoc. 57, 376-386

(June 1962). 4604. Doppler studies of the ionosphere with

vertical incidence, K. Davies. Proc. IRE 50, No.

1, 94 (Jan. 1962). 4605. Doppler studies of the ionospheric effects

of solar flares, K. Davies. Proc. Intern. Conf

.

Ionosphere, London, p. 76-83 (The Institute of Physics and the Physical Society, London, England, 1962). 4606. Dosimetry, chemical and film media, M. Ehrlich. Book, Technology Needs for Reduction

of Patient Dosage from Diagnostic Radiology, Ed.

M. L. Janower, p. 81-100 (C. Thomas Publ. Co., Springfield, 111., 1962).

32

4607. Double probe measurements of ionization

in active nitrogen, H. P. Broida and I. Tanaka

.

J. Chem. Phys. 36, No. 1, 236-238 (Jan. 1962). 4608. Double-resonance experiment in electronically excited CN (Abstract), R. L. Barger, H. P. Broida, and A. J. Estin. Bull. Am. Phys. Soc 7, No. 9, 644 (Dec. 1962). 4609. Drift mobility of an ionic impurity in an electric field, J. R. Manning. Phys. Rev. 125, No. 1, 103-108 (Jan. 1962). 4610. Dry gas operation of ball bearings at cryo- genic temperatures, L. E. Scott, D. B. Chelton,

and J. A. Brennan. (Proc. 1961 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering

7, Paper G-3, 273-276 (Plenum Press Inc., New

York, N. Y. , 1962). 4611. D-talose, R. S. Tipson and H. S. Isbell. Book, Methods of Carbohydrate Chemistry I, 157-159

(Academic Press, Inc., New York, N. Y. , 1962).

4612. Duration and spacing of sferic pulses, R. F. Linfield and C. A. Samson. Proc. IRE 50, No. 8, 1841-1842 (Aug. 1962). 4613. Effect of absorbed water upon the dielectric

properties of certain acrylic ester polymers,

D. J. Scheiber and D. J. Mead. J. Chem. Phys.

37, No. 1, 81-84 (July 1962). 4614. Effect of additives on silver iodide particles exposed to light, G. Burley and D. W. Herrin. J. Appl. Meteorol. 1, No. 3, 355-356

(Oct. 1962).

4615. Effect of monomeric reagents on the melting

(contraction) and recrystallization of fibrous

proteins, L. Mandelkern, W. T. Meyer, and A. F. Diorio. J. Phys. Chem. 66, No. 2, 375-376 (Feb. 1962). 4616. Effect of noncrystallizable components on the crystallization kinetics of polymers, F. Gornick

and L. Mandelkern. J. Appl. Phys. 33, No. 3, 907-

913 (Mar. 1962).

4617. Effect of particle size on low-temperature

heat capacities, A. C. Victor. J. Chem. Phys.

36, No. 10, 2812-2813 (May 15, 1962). 4618. Effect of porosity on Young's modulus of alumina, F. P. Knudsen. J. Am. Ceram. Soc. 45,

No. 2, 94-95 (Feb. 1962). 4619. Effect of surface roughness on oxidation

rate of iron, A. G. Eubanks, D. G. Moore, and

W. A. Pennington. J. Electrochem. Soc. 109, No.

5, 382-389 (May 1962). 4620. Effective impedance of a wire grid parallel

to the earth's surface, J. R. Wait. IRE Trans.

Ant. Prop. AP-10, No. 5, 538-542 (Sept. 1962). 4621. Effects of ultrahigh pressures on glass,

C. E. Weir and S. Spinner. J. Am. Ceram. Soc. 45,

No. 4, 196 (Apr. 1962). 4622. Electrical properties of nonstoichiometric

semiconductors, J. H. Becker and H. P. R. Frederikse. J. Appl. Phys. Suppl. 33, No. 1, 447-453 (Jan. 1962). 4623. Electromagnetic waves in stratified media,

J. R. Wait. Pergamon Press Inc., New York, N. Y.

,

1962. 4624. Electron affinity of atomic iodine, L. M. Branscomb, B. Steiner, and M. L. Seaman. J. Chem.

Phys. 37, No. 6, 1200-1202 (Sept. 15, 196 2). 4625. Unassigned.

4626. Electron energy distribution in slightly

ionized air under the influence of electric and magnetic fields, N. P. Carleton and L. R. Megill.

Phys. Rev. 126, No. 6, 2089-2099 (June 15, 1962). 4627. Electron photodetachment from ions and elastic collision cross sections for 0, C, CI and

F, J. W. Cooper and J. B. Martin. Phys. Rev. 126,

No. 4, 1482-1488 (May 1962).
1962

4628. Electron resonance magnetometer for al- ternating magnetic fields, 0. E. Spokas and

M. Danos. Rev. Sci. Instr. 33, No. 6, 613-617

(June 1962).

4629. Electron tube interchangeability chart,

C. P. Marsden, W. J. Keery, and J. K. Moffitt.

Elec. Ind. 21, No. 3, 149-151 (Mar. 1962);

21, No. 4, 117-119 (Apr. 1962); 21, No. 6, C54-

C57, C64 (June 1962). 4630. Electrophoretic deposits of barium titanate,

V. A. Lamb and H. I. Salmon. Am. Ceram. Soc. Bull. 41, No. 11, 781 (1962). 4631. Electrophoretic mobilities and surface ad- sorption in the polystyrene latex—aliphatic

soap system, C. L. Sieglaff and J. Mazur. J. Colloid Sci. 17, No. 1, 66-85 (Jan. 1962).

4632. Emission flame photometry, M. Margoshes.

Anal. Chem. Suppl. 34, No. 5, 221R-224R (Apr. 1962).

4633. End-group analysis, M. Hellmann and L. A. Wall. Book, Analytical Chemistry of Polymers,

ed. G. M. Kline, Pt . II, Chapt . 5, 397-419

(Interscience Publ. Inc., New York, N. Y. , 1962).

4634. Energy exchange in the biosphere, D. M. Gates. Harper and Row Publ. Inc., New York, N. Y.

,

October 196 2. 4635. Energy use and power demands in all-electric

houses equipped with air-to-air heat pumps,

J. C. Davis and P. R. Achenbach. ASHRAE J. 4, No. 9, 87-95 (Sept. 1962). 4636. Entropies, heats of sublimation, and dis- sociation energies of the cesium halides,

M. D. Scheer and J. Fine. J. Chem. Phys . 36,

No. 6, 1647-1653 (Mar. 1962).

4637. Environmental characteristics of a small underground fallout shelter, P. R. Achenbach,

F. J. J. Drapeau, and C. W. Phillips. ASHRAE J.

4, No. 1, 21 (Jan. 1962).

4638. Equatorial electron density profiles to 5000 kms , using the incoherent scatter technique, K. L. Bowles. (Proc. 3d Intern. Space Science Symp . ) , Book, Space Research III, 253-

264 (1962). 4639. Equatorial spread-F motions, W. Calvert,

K. Davies, E. Stiltner, and J. T. Brown. Proc.

Intern. Conf . Ionosphere, London, p. 316-322

(The Institute of Physics and the Physical

Society, London, England), (1962). 4640. Evidence for field-aligned ionization ir- regularities between 400 and 1,000 km above

the earth's surface, W. Calvert, T. E. VanZandt,

R. W. Knecht, and G. B. Goe . Proc. Intern.

Conf. Ionosphere, London, p. 324-329 (The In- stitute of Physics and the Physical Society,

London, England, 1962). 4641. Exchange beliavior of Kaolins of varying

degrees of crystallinity , W. C. Ormsby, J. M. Shartsis, and K. H. Woodside. J. Am. Ceram. Soc.

45, No. 8, 361-366 (Aug. 1962). 4642. Excitation of modes at very low frequency

in the earth-ionosphere waveguide, J. R. Wait.

J. Geophys. Res. 67, No. 10, 3823-3828 (Sept. 1962).

4643. Excitation of solutions in a gas-stabilized

arc source, B. F. Scribner and M. Margoshes.

IX Colloq. Spectroscopicum Internationale 1961,

II, 309 (Groupement pour l'Avancement Methodes Spectrographiques, Paris, France, 1962). 4644. Excitation of the red and green coronal

lines, C. Pecker and R. N. Thomas. Ann. Astrophys. 25, 100-108 (Mar. -Apr. 1962).

323

4645. Experimental determination of the frequency

ratio of optical harmonics, H. S. Boyne and W. C. Martin. J. Opt. Soc. Am. 52, No. 8, 880-884

(Aug. 1962). 4646. Unassigned.

4647. Experimental gf-values for seventy elements,

C. H. Corliss. Astrophys. J. 136, No. 3, 916-934

(Nov. 1962). 4648. Experimental proof of the absence of equilibrium in helium arc, A. T. Hattenburg and H. J. Kostkowski. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 587-592

(Reinhold Publ. Corp., New York, N. Y., 1962).

4649. Experimentation and Measurement, W. J. Youden. Book, published by the National Science Teachers Association, Washington, D. C. (1962). 4650. Factorial designs and the direct product,

B. Kurkjian and M. Zelen. Bull. ISI, XXXIX, Pt

.

2, 509-519 (1962). 4651. Faraday effect in semiconductors, I. M. Boswarva, R. E. Howard, and A. B. Lidiard. Proc.

Roy. Soc. London A269, 125-141 (1962). 4652. Fast-melting alloy forms water jacket for small klystrons, W. J. Anson and E. Niesen. Electronic Design, p. 42-45 (Mar. 1962).

4653. Ferroelectricity in the compound Ba2Bi4 Ti 5018 , P. H. Fang and B. Aurivillius.

Phys. Rev. 126, No. 3, 893 (May 1962).

4654. Ferroelectricity in the compound Bi 4 Ti 3 012 : P. H. Fang, C. R. Robbins, and B. Aurivillius.

Phys. Rev. 126, No. 3, 892 (May 1962). 4654A. Field-strength measurements in a multipath

field, C. C. Watterson. Proc. 4th Natl. IEEF

Symp. Radio Frequency Interference, San

Francisco, Calif., June 28-29, 1962. 4655. Fifteen years ACM, F. L. Alt. Commun. Assoc. Computing Mach. 5, No. 6, 300-307 (June 1962).

4656. Filters, tunable rejection types F-643 (XN-1)/URM to F-659(XN-1)/URM and radio-fre- quency transmitter spectrum characteristics,

F. M. Greene and E. B. Larson. Measurement of, Instruction Manual, BuShips, Dept. Navy (Dec. 1962). 4657. First results in NASA topside sounder satellite program, R. W. Knecht, J. E. Jackson, and S. Russell. NASA Tech. Note D-1538 (Sept. 1962)

.

4658. Fluorescence, A. F. Forziati. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt

.

11, Chapt. 9, 335-357 (Interscience Publ. Inc., New York, N. Y. , 1962)

.

4659. Fluorescence in comets as a Markov process,

T. Carrington. Astrophys. J. 135, No. 3, 883-891

(May 1962).

4660. Fluorescence of teeth, A. F Forziati and

M. P. Kumpula. Frontiers of Dental Sci. p. 106- 112 (Natl. Sci. Teachers Assoc., Wash. D. C.

,

1962)

.

4661. Fluorine flame calorimetry, G. T. Armstrong.

Book, Experimental Thermochemistry II, Chapt. 7, 129-145 (Interscience Publ. Ltd., London, England. Feb. 1962). 4662. Formation and decay of atoms and small free radicals at low temperatures, D. W. Brown, R. E. Florin, and L. A. Wall. J. Phys. Chem. 66, No.

12, 2602-2612 (Dec. 1962).

4663. Formation constant of the 1:1 pyridineiodine complex, A. G. Maki and E. K. Plyler.

J. Phys. Chem. 66, 766-767 (1962). 4664. Four methods for predicting the durability

of roofing asphalts, S. H. Greenfeld and J. R. Wright. Mater. Res. Std. 2, No. 9, 738-745

(Sept. 1962).
1962

4665. Frequency and time broadcast services of the National Bureau of Standards, A. H. Morgan. Proc

.

ISA 17th Annual Automation Conf . and Exhibit, New York, N. Y. , Oct. 15-18, 1962, Pt . I, Paper

1.1.62, 9 pages (1962). 4666. Games associated with a renewal process,

M. M. Siddiqui. Ann. Math. Stat. 33, 697-701

(June 1962).

4667. 7-irradiation of small molecules at 4°K and

77°K, R. E . Florin, D. W. Brown, and L. A. Wall.

J. Phys. Chem. 66, No. 12, 2672-2676 (Dec. 1962). 4668. Gamma ray attenuation, U. Fano, C. D. Zerby, and M. Berger . Reactor Handb . (Shielding) 2d Edition, Ed. E. P. Blizard, III, Pt . B, Chapt

.

10, 103 (Interscience Publ . , Inc., New York,

N. Y. , 1962). 4669. Gas evolution from metal surfaces during

fatigue stressing, W. L. Holshouser and J. A. Bennett. Am Soc. Testing Mater. Preprint 62

(June 1962).

4670. Gas-phase radiolysis of propane, P. Ausloos

and S. Lias. J. Chem. Phys. 36, No. 14, 3163- 3170 (June 15, 1962).

4671. Geomagnetic and solar data, J. V. Lincoln.

J. Geophys. Res. 67, No. 5, 2035 (May 1962). 4672. Germanium vacuum ultraviolet Ritz standards, V. Kaufman and K. L. Andrew. J. Opt.

Soc. Am. 52, No. 11, 1223-1236 (Nov. 1962). 4673. Glass dewars for optical and other studies

at low temperatures, L. Schoen and H. P. Broida. Rev. Sci. Instr. 33, No. 4, 470-473

(Apr. 1962). 4674. Growth rates of potassium crystal from the vapor phase, R. L. Parker. J. Chem. Phys. 37,

No. 8, 1600-1605 (Oct. 1962).

4675. Unassigned.

4676. Heat transfer between a cryo-surface and a controlled atmosphere, R. J. Richards, K. Edmonds, and R. B. Jacobs. Suppl . Bull. Intern. Inst. Re- frigeration Annexe 1962-1, p. 89 (Aug. 1962).

4677. Heat transfer in intensively outgassed

powders, R. C. Little, F. G. Carpenter, and

V. R Deitz. J. Chem. Phys. 37, No. 8, 1896- 1898 (Oct. 15, 1962). 4678. Heats of formation of inorganic fluorine

compounds —A survey, G. T. Armstrong and L. A. Krieger. Progress in Intern. Research on Thermodynamics and Transport Properties, p. 8-77

(Am. Soc. Mech. Engrs . and Academic Press Inc., New York, N. Y. , 1962)

.

4679. Helium, V. D. Arp and R. H. Kropschot. Book, Applied Cryogenic Engineering, Ed. R. W. Vance, Chapt. 12, 321-343 (John Wiley and Sons, Inc., New York, N. Y. , 1962)

.

4680. High mode tunable cavity for microwavegas interactions, A. J. Estin. Rev. Sci. Instr.

33, No. 3, 369-371 (Mar. 1962).

4681. High pressure transition of RbF, G. J. Piermarini and C. E. Weir. J. Chem. Phys. 37,

No. 8, 1887-1888 (Oct. 15, 1962). 4682. High resolution spectra in the region from

2 to 6fi, E. K. Plyler and E. D. Tidwell. (Proc. Intern Molecular Conf.), Book, Advances in Molecular Spectroscopy, p. 1336-1342 (Pergamon

Press Inc., New York, N. Y. ," 1962).

4683. Horizons in dentistry, G. C. Paf f enbarger

.

Frontiers of Dental Sci. p. 122-128 (National Science Teachers Assoc., Wash. D. C. Dec. 1962). 4684. How to evaluate accuracy of analytical

procedures, W. J. Youden. Proc. Fourth Annual

National Plant Food Industry Conf. Chemical Control Problems, p. 36-74 (Mar. 1962).

4685. Hydrogen formation in the gamma radiolysis

of ethylene, P. Ausloos and R. Gorden, Jr.

J. Chem. Phys. 36, No. 1, 5-9 (Jan. 1962). 4686. Hyperfine structure and intercombination

line intensities in the spectra of magnesium,

zinc, cadmium, and mercury, R. H. Garstang. J. Opt. Soc. Am. 52, No. 8, 845-851 (Aug. 1962). 4687. Identification of GA II lines in Stellar

spectra, W. P. Bidelman and C H. Corliss. Astrophys. J. 135, No. 3, 968-969 (May 1962). 4688. IGY calendar record, J. V. Lincoln and A. H. Shapley. Intern. Geophys. Year XVI, Pt . 1, 1-157

(1962) . 4689. Image-gloss test; Appartus and procedure,

W. N. Harrison. Proc. Porcelain Enamel Inst. Forum 23, 154-163 (1962). 4690. Improved zinc oxide-eugenol type cements,

G. M. Brauer, L. Simon, and L. Sangermano. J. Dental Res. 41, No. 5, 1096-1102 (Sept. -Oct. 1962)

.

4691. Indication limit, E. L. R. Corliss. Book, The Organization Committee of the Fourth In- ternational Congress on Acoustics, Pt. I, Paper

No. N22 (Copenhagen, Denmark, Aug. 21-26, 1962). 4692. Inertial effects in the phenomenological

theory of thermal diffusion in liquids, R. E. Nettleton. II Nuovo Cimento 28, Serie X, 952-

969 (Dec. 7, 1962). 4693. Inertial seismograph design—limitations in principle and practice, D. P. Johnson and B. S. Melton. Proc. IRE 50, No. 11, 2328-2339 (Nov. 1962)

.

4694. Infrared spectrophotometry, M. Tryon and

E. Horowitz. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 8, 291- 333 (Interscience Publ. Inc., New York, N. Y.

,

1962)

.

4695. Infrared spectrum of acetylene-dj , W. J. Lafferty, E. K. Plyler, and E. D. Tiawell. J. Chem. Phys. 37, No. 9, 1981-1988 (Nov. 1962). 4696. Infrared spectrum of carbon tetraf luor ide

,

A. Maki, E. K. Plyler, and R. J. Thibault. J. Chem. Phys. 37, No. 8, 1899-1900 (Oct. 15, 1962). 4697 . Infrared spectrum of dideuteroacetylene

(C 2 D 2 ), E. D. Tidwell and E. K. Plyler. J. Opt.

Soc. Am. 52, No. 6, 656-664 (June 1962). 4698. Infrared transmission along slant paths in the stratosphere, D. M. Gates. Proc. NATO

(Summer), 1962.

4699. Infrared wavelength dependence of the total absorptivity of electroplated silver, D. Cline.

J. Appl. Phys. 33, 2310-2311 (July 1962). 4700. Infrasonics, R. K. Cook. McGraw-Hill Yearbook

of Science and Technology, p. 275-276 (1962). 4701. Infrasonic pressure waves associated with

magnetic storms, P. Chrzanowski, J. M. Young,

G. Greene, and K. T. Lemmon. J. Phys. Soc. Japan

17, Suppl. A-II, 9-13 (1962). 4702. Insulation resistance measurements, A. H. Scott. Proc. Fourth Electrical Insulation Conf., Materials and Application, Wash. D. C. , p. 115-

117 (Feb. 19-22, 1962). 4703. Interaction energy of an alkali metal with

a rare gas, V. Griffing and N. Scheel. J. Chem.

Phys. 36, No. 6, 1453-1458 (Mar. 1962).

4704. Intercomparisons of laboratory test results,

J. Mandel. Proc. ISA 17, Pt . II, 44.3.62-1-44.3.

62-5 (1962). 4705. Interlaboratory evaluation of a method for indicated brightness of papers containing

fluorescent brighteners, T. W. Lashof and J. M. Patek. Tappi 45, No. 7, 566-570 (July 1962). 324
1962

4706. Internal magnetic fields in nickel-rich

nickel cobalt alloys, L. H. Bennett and R. L. Streever. J. Appl. Phys . Suppl. 33, No. 3, 1093-1094 (Mar. 1962).

4707. International geophysical calendar for 1962,

A. H. Shapley and J. V. Lincoln. J. Radio Res. (Japan) 8, 387-389 (Sept. 1961); Inter. Sci

.

Radio Union Info. Bull. 129, 16-23 (Nov. -Dec.

1961); IUGG Chronicle 40, 313-315 (Dec. 1961); IGY Bull. 54, 9-11 (Dec. 1961); Science 134, 1982-1984 (Dec. 15, 1961); J. Geophys . Res.

67, 388-390 (Jan. 1962); Nature 193, 8-9 (Jan.

6, 1962); J. Atmospheric and Terrest . Phys.

24, 67-69 (Jan. 1962); COSPAR Info. Bull. 8, 33-36 (Feb. 1962). 4708. Interpolation of platinum resistance thermometers, 10O to 273.15°K, R. J. Corruccini. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 329-338 (Rein- hold Publ. Corp., New York, N. Y. , Nov. 1962).

4709. Interpretation of pH measurements in alcohol-water solvents, R. G. Bates and R. A. Robinson. Proc. 7th Intern. Conf. Coordination

Chemistry, Stockholm, Sweden, p. 342-344 (1962). 4710. Interpretation of rate experiments with re- solved quantum levels, T. Carrington. Discussions Faraday Soc. No. 33, 44-51 (1962). 4710A. Interrelations of Sporadic E and iono- spheric currents, S. Matsushita. Book, Iono- spheric Sporadic-E, Ed. E. K. Smith and S. Matsushita, Chapt. II, Pt . C, No. 5, 344-375

(Pergamon Press Inc., New York, N. Y. , 1962).

4711. Intramolecular rearrangements in the solid phase photolysis of 4-methyl-2-hexanone

and sec-butyl acetate, R. E. Rebbert and

P. Ausloos. J. Chem. Phys. 37, No. 5, 1158- 1159 (Sept. 1962). 4712. Introduction, H. S. Peiser. Book, Vacuum

Microbalance Techniques, ed. R. F. Walker,

2, 1-5 (Plenum Press, Inc., New York, N. Y.

,

1962)

.

4713. Introduction to the theory of VLF propagation,

J. R. Wait. Proc. IRE 50, 1624-1647 (July 1962).

4714. Investigation and elimination of systematic

errors in measures of solar flares, C. S. Warwick,

M. W. Haurwitz, and C. E. Hoff . Astron. J. 67, 123

(1962). 4715. Investigation of the spectrophotometric

method of measuring the Ferric ion yield in the ferrous sulfate dosimeter, K. Scharf and

R. M. Lee. Radiation Res. 16, No. 2, 115-124

(Feb. 1962). 4716. Ionic interactions with sugar colorant during char filtration, F. C. Carpenter, D. Larry, and V. R. Deitz. Proc. 7th Tech. Session

on Bone Char 1961, p. 259-285 (Bone Char Research Project Inc., Charlestown, Mass.,

1962)

.

4717. Ionospheric effects associated with the solar flare of September 28, 1961, K. Davies. Nature Letter 193, No. 4817, 736-764 (Feb.

24, 1962).

4718. Ionospheric Sporadic E, E. K. Smith and S. Matsushita. Editors, (Pergamon Press Inc., New York, N. Y. , 1962).

4719. Irreversible processes in liquids and the density matrix: monatomic molecules, R. E. Nettleton. Phys. Fluids 5, No. 6, 687-700 (June

1962)

.

4720. Isotope effect in an electric field and jump frequencies for diffusion in ionic crystals,

J. R. Manning. J. Appl. Phys. 33, No. 7, 2145-

2151 (July 1962)

.

4721. Isotope effect in the recrystallization of D-mannose-l-t phenylhydrazone , H. S. Isbell and

L. T. Sniegoski. Anal. Chem. 34, 1753-1755

(Dec. 1962). 4722. Unassigned.

4723. Isotopic methods of analysis, H. S. Isbell and H. L. Frush. Book, Methods of Carbohydrate

Chemistry I, 409-419 (Academic Press, Inc., New

York, N. Y., 1962). 4724. Kinetics of the hydrolysis of acetal in N- methylpropionamide-water and N-N-dimethylf ormamide-water solvents at 20, 25, 30, and 40°,

R. K. Wolford and R. G. Bates. J. Phys. Chem.

66, No. 8, 1496-1500 (Aug. 1962). 4725. Laboratory astrophysics, L. M. Branscomb

and R. N. Thomas. Phys. Today 15, No. 11, 42-44,

46 (Nov. 1962). 4726. Landau damping with collective correlation,

C. M. Tchen. Czechoslovak J. Phys. 12, 516 (1962) . 4727. Large longitudinal retarded elastic de- formation of rubberlike network polymers,

H. Leaderman. J. Polymer Sci. Letter to Editor

59, No. 168, S42 (June 1962); Trans. Soc. Rheology 6, 361-382 (1962). 4728. Lattice frequencies and rotational barriers

for inorganic carbonates and nitrates, R. A. Schroeder, C. E. Weir, and E. R. Lippincott,

J. Chem. Phys. 36, No. 10, 2803-2804 (May 1962). 4728A. Letter to the Editor of Industrial Research

in answer to letters regarding "Synthesis of food," A. T. McPherson. Ind. Res. Feedback Col.

4, No. 5, 15-16 (May 1962). 4729. Lightning hazards to mountaineers, A. E. Peterson. Am. Alpine J. 13, No. 1, 143-154

(June 1962)

.

4730. Linear thermal expansion of aluminum oxide

and oxide and thorium oxide from 100° to 1100°K,

J. B. Wachtman, Jr., T. G. Scuderi, and G. W. Cleek. J. Am. Ceram. Soc. 45, No. I, 310-323

(July 1962)

.

4731. Lower bounds to eigenvalues using operator decompositions of the form B*B, N. W. Bazley

and D. W. Fox. Arch. Rat. Mech. Anal. 10, 352

(1962)

.

4732. Low-level low-frequency detection system,

N. T. Larsen. Rev. Sci. Inst. 33, 1200-1208

(Nov. 196 2). 4733. Low temperature characteristics of some commercial thermocouples, R. L. Powell and

L. P. Caywood, Jr. (Proc. 1961 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering

7, Paper L-2, 517-521 (Plenum Press, Inc., New

York, N. Y., 1962). 4734. Low temperature insulation, R. H. Kropschot.

Book, Applied Cryogenic Engineering, Ed. R. W. Vance and W. M. Duke. p. 152-169, (John Wiley

and Sons, Inc., New York, N. Y. , 1962).

4735. Low-temperature thermocouples, R. L. Powell,

L. P. Caywood, Jr., and M. D. Bunch. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 2, 65-77 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

325
196 2 4736. Low-temperature thermometry, K. D. Timmerhaus. Book, Applied Cryogenic Engineering, Ed.

R. W. Vance, Chapt . 4, p. 60-103 (John Wiley

and Sons, Inc., New York, N. Y. , 1962).

4737. Lunar tidal variations of sporadic E, S. Matsushita. Book, Ionospheric Sporadic E, Ed. E. K. Smith and S. Matsushita, p. 194-214 (Pergamon Press Inc., New York, N. Y. , 1962). 4738. Magnetic properties of acetinide element alloys and compounds, J. C. Eisenstein. Landolt- Bornstein 6th edition 2, Pt . 9, 3-236 (SpringerVerlag, Berlin, Germany, 1962).

4739. Magnetic resonance spectroscopy, L. A. Wall

and R. E. Florin. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 12, 487-559 (Interscience Publ., New York, N. Y.

,

1962)

.

4740. Martensitic transformation products and mechanical properties of austenitic stainless

steels at low temperatures, C. J. Guntner and

R. P. Reed. (Proc. 1961 Cryogenic Eng. Conf . )

,

Book, Advances in Cryogenic Engineering 7, Paper K-9, 500-502 (Plenum Press, Inc., New

York, N. Y. , 1962).

4741. Mass spectrometry, R. M. Reese, Anal. Chem. Suppl. 34, No. 5, 243R-254R (Apr. 1962). 4742. Mass spectrometry, L. A. Wall, Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt

.

II, Chapt. 6, 249-268 (Interscience Publ. Inc., New York, N. Y. , 1962)

.

4743. Mathematical analysis of thermal environment

in underground shelters, P. R. Achenbach,

T. Kusuda, and F. J. J. Drapeau. ASHRAE Symp. Survival Shelters, p. 9-33 (June 1962).

4744. Mathematical services for standards laboratories, A. T. McPherson. Rev. Math. Fisica Teorica XIV, Series A, Publ. 861, Nos. 1 and

2, 277-285 (Univ. Nacional de Tucuman, Argentina,

1962)

.

4745. Matrix effects in the gaseous H atom-con- densed olefin system; surface reaction-olef in diffusion model, R. Klein and M. D. Scheer.

Phys. Chem. 66, No. 12, 2677-2681 (Dec. 1962). 4746. Measured cumulative distributions of the directive gain of an 18.3 meter diameter parabolic antenna at a frequency of 1040 Mc/s, M. T. Decker.

CCIR, Geneva, Report V/89 (May 1962). 4747. Measurement and standardization of dielectric

samples, H. E. Bussey and J. E. Gray. (Intern. Conf. Precision Electromagnetic Measurements,

Boulder, Colo., 1962), IRE Trans. Instr. I- 11, Nos. 3 and 4, 162-165 (Dec. 1962). 4748. Measurement characteristics of the farm

milk tank, M. W. Jensen. Milk and Food Technol.

25, No. 4, 112-115 (Apr. 1962).

4749. Measurement of effect of moisture on heat transfer through insulated flat-roof constructions, F. J. Powell and H. E. Robinson. ASTM

Spec. Tech. Publ. 312, 35-66 (May 1962).

4750. Measurement of effective temperatures of microwave noise sources, J. S. Wells, W. C. Daywitt, and C. K. S. Miller. IRE Intern. Conv. Record Pt . Ill, p. 220-238 (1962). 4751. Measurement of electron density and temp- erature in dense plasmas by application of line broadening theory, J. B. Shumaker and W. L. Weise. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 575-

579 (Reinhold Publ. Corp., New York, N. Y. , 1962). 4752. Measurement of linear photon polarization by pair production, L. C. Maximon and H. Olsen.

Phys. Rev. 126, No. 1, 310-319 (Apr. 1962).

4753. Measurement of the lattice constants of neon isotopes in the temperature range 4 -24 K, L. H. Bolz and F. A. Mauer. Proc. 11th Annual

Conf. Applications of X-ray Analysis, Denver

Res. Inst. (Plenum Press, Inc., New York, N. Y.

,

1962)

.

4754. Measurement of RF peak pulse power by a sampling-comparison technique, P. A. Hudson,

W. L. Ecklund, and A. R. Ondrejka. (Intern.

Conf. Precision Electromagnetic Measurements,

Boulder, Colo., 1962), IRE Trans. Instr. 1-11, Nos. 3 and 4, 280-284 (Dec. 1962). 4755. Mechanical basis of diffusion, C. A. Truesdell. J. Chem. Phys. 37, No. 10, 2336-2344

(Nov. 15, 1962). 4756. Mechanical design of protected areas, P. R. Achenbach. Proc. BRI Conf. Design for Nuclear

Age, 992, 21-49 (1962). 4757. Mechanical properties of materials, R. H. Kropschot. Book, Applied Cryogenic Engineering,

Ed. R. W. Vance, p. 44-59 (John Wiley and Sons,

Inc., New York, N. Y. , 1962).

4758. Mechanical reading of characters and recognition, M. E. Stevens. (Proc. Intern. Patent Office Workshop on Information Retrieval) , 125th An- niversary of the U. S. Patent Act of 1836, Pt . II.

p. 205 (1962).

47 59. Melting and contractility of feather keratin,

L. Mandelkern, J. C. Halpin, and A. F. Diorio.

J. Polymer Sci. 60, No. 169 S31-S33 (July 1962). 4760. Melting pressure equation for the hydrogens,

R. D. Goodwin. Cryogenics 2, No. 6, 1-3 (Dec. 1962)

.

4761. Memorial to Sir Ronald Aylmer Fisher: 1890-

1962, W. J. Youden. J. Am. Stat. Assoc. 57, No. 300, 727-728 (Dec. 1962).

4762. Mercury, C. L. Gordon, Book, Comprehensive

Analytical Chemistry, Chapt. 2C, 409-422

(Elsevier Publ. Co., Princeton, N. J., 1962).

4763. Method of measuring the velocity of 7-rays using the Mossbauer effect (abstract), R. C. Mockler and W. E. Brittin, Bull. Am. Phys. Soc.

7, 505 (Aug. 196 2). 4764. Microscopy, S. B. Newman. Book, Analytical Chemistry of Polymers, ed. G. M. Kline. Pt . Ill, Chapt. 3, 261-348 (Interscience Publ. Inc., New York, N. Y. , 196 2)

.

4765. Microscopy of color phenomena in polymer

failure, S. B. Newman and I. Wolock. (Proc. General Motors Res. Symp. on Adhesion and

Cohesion), Book, Microscopy of Color Phenomena

in Polymer Fracture, Ed. P. Weiss, p. 218-239

(Elsevier Publ. Co., New York, N. Y. , 1962). 4766. Microsize magnetic field probes with axial

symmetry, C. A. Shiffman. Rev. Sci. Instr. 33, No. 2, 206-207 (Feb. 1962). 4767. Microwave Doppler measurements of the ionization front in cylindrical shock waves from exploding wires, D. L. Jones and R. M. Gallet,

Book, Exploding Wires 2, 127-144 (Plenum Press

Inc., New York, N. Y. , 1962). 4768. Microwave measurements in the NBS Electronic Calibration Center, R. E. Larson. Proc. Inst. Elec. Engrs. 109B, Suppl. 23, 644-650 (1962). 4769. Microwave spectrum and nonplanarity of cyanamide, D. J. Millen, G. Topping, and D. R. Lide, Jr. J. Mol . Spectry. 8, No. 2, 153-163

(Feb. 196 2). 4770. Microwave spectrum of methyldif luoroarsine,

L. J. Nugent and C. D. Cornwell. J. Chem. Phys.

37, No. 3, 523-534 (Aug. 1962).

326
1962

4771. Microwave structure determinations on tertiary butyl acetylene and tertiary butyl

cyanide, L. J. Nugent, D. E. Mann, and D. R. Lide, Jr. J. Chem. Phys. 36, No. 4, 965-971

(Feb. 1962).

studit

I. Spectrum of fluoroprene, D. R. Lide, Jr.

J. Chem. Phys. 37, No. 9, 2074-2079 (Nov. 1962).

4773. Microwave Zeeman effect of free hydroxyl

radicals: 2 IIj

2 levels, H. E. Radford. Phys. Rev. 126, No. 3^~1035 (1962). 4774. Mid latitude auroras, F. E. Roach. (Proc. Intern. Conf. Cosmic Rays and the Earth Storm),

J. Phys. Soc. Japan 17, Suppl. A, Pt . I, 258-259

(1962)

.

4775. Millimeter wavelength resonant structures,

R. w. Zimmerer, M. V. Anderson, G. L. Strine, and Y. Beers. IRE Trans. Microwave Theory and

Tech. Natl. Symp. Program and Digest, p. 1-3

(1962) . 4776. Mineralized tissues, A. S. Posner. Book, Phosphorus and Its Compounds, II. Technology, Biological Functions, and Applications, ed. J. R. Van Wazer, Chapt. 22, 1429-1459 (Interscience

Publ. Inc., New York, N. Y. , 1962).

4777. Mobilities of positive ions in argon, E. C. Beaty. Proc. Conf. Ionization Phenomena in Gases,

Aug. 28-Sept. 1, 1961, Munich, Germany, p. 183 (North Holland Publ. Co., Amsterdam, The Netherlands, 196 2). 4778. Modular forms whose coefficients possess multiplicative properties (II), M. Newman.

Ann. Math. 75, 242-250 (Mar. 1962). 4779. Modulated photoelectric measurement of vibration, V. A. Schmidt, S. Edelman, E. R. Smith, and E. T. Pierce. J. Acoust . Soc. Am. 34, No.

4, 455-458 (Apr. 1962).

4780. Molecular collision models and transition

probabilities in liquids, R. E. Nettleton. J. Chem. Phys. 38, 2226-2227 (Apr. 1962).

4781. Molecular parameters of ethane, W. J. Lafferty and E. K. Plyler. J. Chem. Phys. 37, No. 11, 2688-2692 (Nov. 1962). 4782. Molecular weights and sizes, S. G. Weissberg,

5. Rothman, and M. Wales. Book, Analytical

Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 1, 1-77 (Interscience Publ. Inc., New York,

N. Y. , 1962).

4783. Morphology of ionospheric storms, A. H. Shapley, (Proc. Intern. Conf. Cosmic Rays and the Earth Storm), J. Phys. Soc. Japan 17, Suppl. A, Pt. I. 303 (1962). 4784. National Bureau of Standards list of IGY flares with normalized values of importance and

area, C. S Warwick, IGY Solar Activity Report Series 17 (Intern. Geophys. Year, World Data Center A. Solar Activity, High Altitude Ob- servatory, University of Colorado, Boulder, Colo., May 1, 1962)

.

4785. Net heat of combustion and other properties

of kerosine and related fuels, G. T. Armstrong,

L. Fano, R. S. Jessup, S. Marantz, T. W. Mears, and J. A. Walker. J. Chem. Engr . Data 7, No. 1, 107-116 (Jan. 1962). 4786. Neutral meson photoproduction complex nuclei,

R. A. Schrack, J. E. Leiss, and S. Penner. Phys.

Rev. 127, No. 5, 1772-1783 (Sept. 1962). 4787. New potential energy function. I. Empirical,

W. L. Clinton, J. Chem. Phys. 36, No. 2, 555-556

(Jan. 1962).

4788. New potential energy function. II. Theoretical, W. L. Clinton. J. Chem. Phys. 36, No. 2, 556-557 (Jan. 1962). 4789. New scale of nuclidic masses and atomic

weights, E. Wichers. Nature 194, No. 4829, 621-

624 (May 19, 196 2)

.

4790. New wavemeter for millimeter wavelengths,

R. W. Zimmerer. Rev. Sci. Inst. 33, No. 8, 858-

859 (Aug. 1962). 4791. Nonlinear ambipolar diffusion (abstract),

K-B. Persson. Bull. Am. Phys. Soc. 9, 636

(Dec. 1962). 4792. Note on "radiation imaging technique for thermal conductivity measurements above 1,000 C,

by P. E. Glaser, et al., H. E. Robinson. Rev.

Sci. Instr. 33, No. 3, 392-393 (Mar. 1962). 4793. Note on the Kubela method of measuring water absorption of leather, R. L. Hebert and A. E. Mc- Donell. J. Am. Leather Chemists Assoc. 57, No. 9, 461-469 (Sept. 1962). 4794. Nuclear magnetic resonance of Ni s

1

in dilute

alloys of nickel in cobalt, R. L. Streever, L. H. Bennett, R. C. LaForce, and G. F. Day. Phys. Rev.

128, No. 4, 1632-1633 (Nov. 15, 1962). 4795. Nuclear moment of Ni s

1

, L. H. Bennett and

R. L. Streever. Phys. Rev. Letters 121, No. 6, 2141-2142 (June 15, 1962). 4796. Nuclear photoeffect in deformed nuclei,

E. Hayward, Proc. Intern. School of Physics, "Enrico Fermi" Course XV, Nuclear Spectroscopy,

p. 214-222 (Academic Press Inc., New York, N. Y.

,

1962)-. 4797. Observation of a 6300 A arc in France, the United States and Australia, F. E. Roach, D. Barbier, and R. A. Duncan. Ann. Geophys. 18, 390-391 (Oct. -Dec. 1962). 4798. Obtaining the internal junction characteristics of a transistor for use in analog simulation, S. B. Geller. IRE Trans. Electronic Com- puters EC-11, No. 5, 709-710 (Oct. 1962). 4799. Oil baths for saturated standard cells,

P. H. Lowrie. Jr. ISA J. 9, No. 12, 47-50

(Dec. 196 2). 4800. On an extension of the stroboscopic method,

A. Ghaffari. Abstracts of Communications of the

Intern. Congress Mathematicians, p. 185 (Aug. 1962)

.

4801. On geomagnetic sudden commencements, sudden

impulses, and storm durations, S. Matsushita.

J. Geophys. Res. 67, No. 10, 3753-3777 (Sept. 1962)

.

4802. On LF ionospheric phenomena in radio naviga- tion systems, J. R. Johler . (AGARD meeting, October 3-8, 1960, Istanbul, Turkey), AGARDograph

55 (Pergamon Press Inc., New York, N. Y. , 1962). 4803. On the binary collision expansion of the classical N-body Green's function, J. Weinstock.

Phys. Rev. 126, No. 1, 341-344 (Apr. 196 2). 4804. On the bulk density of boiling liquid oxygen,

R. W. Arnett. (Proc. 1961 Cryogenic Eng. Conf.),

Book, Advances in Cryogenic Engineering 7, Paper

F-4, 214-218 (Plenum Press, Inc., New York,

N. Y., 1962).

4805. On the interpretation of prominence spectra.

V. The emission lines in quiescent prominences,

J. T. Jefferies and F. Q. Orrall. Astrophys. J. 135, No. 1, 109-121 (Jan. 1962).

327
1962

4806. On the mean temporal variations of electron

density at a fixed height in the F region,

A. J. Hirsh and R. W. Knecht. J. Gecphys. Res.

67, No. 2, 595-600 (Feb. 1962). 4807. On the nature of equatorial slant sporadic E, R. Cohen, K. L. Bowles, and W. Calvert. J. Geophys. Res. 67, No. 3, 965-972 (Mar. 1962).

4808. On the pedestrian queueing problem, G. Weiss. Bull. ISI XXXIX, Pt. 4, 163-168 (1962). 4809. On the propagation of ELF pulses in the earth- ionosphere waveguide, J. R. Wait. Can. J. Phys.

40, 1360-1369 (Oct. 1962). 4810. On the realistic measurement of precision and accuracy, C. Eisenhart. Proc. 8th Natl. Aero- space Institute Symp. , ISA 8, 75-83 (1962). 4811. On the self-diffusion of ions in polyelectrolyte solution, S. Lifson and J. L. Jackson.

J. Chem. Phys. 36, No. 9, 2410-2414 (May 1962).

4812. On the theoretical study of F scatter,

K. Tao. J. Geomagnetism and Geoelectrici ty 14, 71-85 (1962); J. Rad. Res. Tales (Japan) 9, 407

(Sept. 1962). 4813. On the theory of diffraction grating in- terferometers, H. Mendlowitz and J. A Simpson.

J. Opt. Soc. Am. 52, No. 5, 520-524 (May 1962). 4814. On the width of the equatorial E belt, R. W. Knecht and R. E. McDuffie. Book, Ionospheric Sporadic E. Ed. E. K. Smith and S. Matsushita,

p. 215-218 (Pergamon Press Inc., New York, N. Y.

,

1962).

4815. Optical absorption spectrum of carbon in solid argon (abstract), H. P. Broida and R. L. Barger. Bull. Am. Phys. Soc. 7, 497-498 (Aug. 1962)

.

4816. Optical character recognition, G. L. Fischer,

D. K. Pollack, B. Raddick, and M. S. Stevens. Editors. (Spartan Books, Wash. D. C. , 1962).

4817. Optical constants of aluminum in vacuum

ultraviolet, R. Lavilla and H. Mendlowitz. Phys.

Rev. Letters 9, No. 4, 149-150 (Aug. 15, 1962).

4818. Optical detection of microwave transitions

in electronically excited CN produced by a chemical reaction, R. L. Barger, H. P. Broida,

A. J. Estin, and H. E. Radford. Phys. Rev. Letters 9, No. 8, 345-346 (Oct. 15, 1962). 4819. Optical methods, A. F. Forziati. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt . 3, 109-157 (Inter- science Publ. Inc., New York, N. Y., 1962).

4820. Optical rotation, C. F. Snyder, H. L. Frush,

H. S. Isbell, A. Thompson, and M. L. Wolfrom.

Book, Methods of Carbohydrate Chemistry I, 524-534

(Academic Press, Inc., New York, N. Y. , 1962). 4821. Optical studies at high pressures using

diamond anvils, C. E. Weir, A. Van Valkenburg, and E. Lippincott. Book, Modern Very High Pres- sures Techniques, ed. R. H. Wentorf, Jr., Chapt 3, p. 51-69 (Butterworth and Co., London, England, 1962). 4822. Oscillatory phenomena, A. H. Kahn. (Proc. Conf. High Magnetic Field, Mass. Inst. Tech., Cambridge, Mass., Nov. 1-4, 1961), Book, High Magnetic Fields, p. 480-488 (Mass. Inst. Technol.

Press, Cambridge, Mass., and John Wiley and Sons,

Inc., New York, N. Y. , 1962. 4823. Oxidation of high polymers, M. Tryon and

L. A. Wall. Book, Autoxidation and Antioxidants,

Ed. W. 0. Lundberg, II, Chapt. 19, 919-984 (Interscience Publ. Inc., New York, N. Y. , 1962).

4824. Oxidation of metals in salts. Silver in so- dium chloride, K. H. Stern. J. Phys. Chem. No. 7, 1311-1317 (July 1962)

.

4825. Pair production as an analyzer of circular polarization of gamma rays from neutral particle

decays, H. Olsen and L. C. Maximon. II Nuovo Cimento 24, Series X, 186-189 (Apr. 1962). 4826. Paramagnetic resonance phenomena, H. E. Radford. Encyclopaedic Dictionary of Physics 5, 293 (Pergamon Press Inc., New York, N. Y., 1962)

.

4827. Parametric behavior of an ideal two-frequency

varactor, G. F. Montgomery. Proc. IRE 50, No. 1, 78-80 (Jan. 1962). 4828. Performance characteristics of split-type residential air-to-air heat pumps, J. C. Davis

and P. R. Achenbach. Suppl. Bull. Intern. Inst. Refrigeration Annexe 1962-1, p. 349-355 (Aug. 1962)

.

4829. Performance characteristics of turbine

flowmeters, M. R. Shafer, J. Basic Eng. 84, Series

D, No. 4, 471-485 (Dec. 1962). 4830. Phase- lock captured by tyratron ringing

circuit, J. V. Cateora and R. W. Hubbard. Elec. Design News 7, No. 3, 74-77 (Mar. 1962). 4831. Phase-modulated calibrator for testing phase

meters, M. C. Thompson, Jr. Rev. Sci. Instr. 33, 563-564 (May 1962)

.

4832. Photodetachment, L. M. Branscomb. Book, Atomic

and Molecular Processes, ed. D. R. Bates, p. 100- 138 (Academic Press, Inc., New York, N. Y. , 1962). 4833. Photographic strain measuring technique for

use above 3,000 F, L. Mordfin and T. Robusto, Jr. Proc. ISA 17, Pt. I, 3.4-62-1-3.4-62-7 (1962). 4834. Photoionization from outer atomic subshells.

A model study, J. R. Cooper. Phys. Rev. 128, No.

2, 681-693 (Oct. 15, 1962). 4835. Photosensitized reaction between hydrogen

( 2 P) atoms and molecular nitrogen, I. Tanaka and

J. R. McNesby. J. Chem. Phys. 36, 3170 (June 15, 1962)

.

4836. Physical measurement: pilot of progress,

A. V. Astin. Steel, p. 112 (July 23, 1962).

4837. Physical measurements and experiment design,

W. J. Youden. Le plan d'exper. Centre Natl. Recherche Sci., Paris, France, p. 110 (Aug.-

Sept. 1961); Scuola Azione No. 10, p. 181-200

(Scuola de Studi Superiori Suglie Idrocarburi, San Donato Milanese, Italy, 1961-1962).

4838. Physical properties of 113 domestic marbles,

A. Hockman. Architectural Record 131, No. 4, 192-

194 (Apr. 1962).

4839. Physical standards of emittance and reflectance, J. C- Richmond. (Proc. Conf. Radiative

Transfer from Solid Materials, Boston, Mass.,

Dec. 12-13, 1960), Book, Radiative Transfer from

Solid Materials, ed. H. H. Blau, Jr., and H. Fischer, Sec. Ill, p. 142-153 (The Macmillan Co., New York, N. Y. , 1962). 4840. Pitfalls in determination of the compressive

strength of concrete, J. R. Dise. Mod. Concrete

26, No. 3, 48-51 (July 1962).

4841. Plasma with net charge, J. L. Jackson, D. B. Levine, and R. A. Piccirelli. Phys. Fluids 5, No. 2, 250-251 (Feb. 1962). 4842. Plastics, G. M. Kline. Encyclopedia Americana, 1962 ed., XXII, 221-229 (1962); Americana Annual

1962, p. 603 (Americana Corp., Chicago, 111., 1962)

.

4843. Plating standards and specifications,

F. Ogburn. Electroplating Engineering Handbook,

ed. K. Graham, 2d ed., Chapt. 7, p. 257-262

(Reinhold Publ. Corp., New York, N. Y. , 1962).

328
196 2 4844. Plural scattering of 20-kev electrons in aluminum, L. Marton, J. A. Simpson, H. A. Fowler,

and N. Swanson. Phys. Rev. 126, No. 1, 182-192

(Apr. 1962).

4845. Polar blackout during the International Geophysical Year, V. Agy. Intern. Conf . Cosmic

Rays and the Earth Storm, Proc. Tokyo Phys. Soc. Japan 1, 121 (1962)

.

4846. Polarography , G. M. Brauer. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 11, 405-485 (Interscience Publ. Inc., New York, N. Y. , 1962)

.

4847. Polymer degradation (by heat, oxidation,

and radiation), in unsolved problems in polymer

science, L. A. Wall. ASD Report 62-283, p. 32-36

(Mar. 1962).

4848. Polymorphism in fibrous polypeptides; a^H

transformation in naturally occurring keratin,

A. F. Diorio, L. Mandelkern, and E. R. Lippincott

.

J. Phys. Chem. 66, No. 11, 2096-2100 (Nov. 1962)

.

4849. Powell comparator method for determining

thermal conductivities, D. C. Ginnings. Progress

in Intern. Res. on Thermodynamics and Transport

Properties, p. 8-77 (Am. Soc. Mech. Engrs. and Academic Press, Inc., New York, N. Y. , 1962).

4850. Precision and accuracy in electromagnetic

measurements, R. D. Huntoon, (Intern. Conf. Pre- cision Electromagnetic Measurements, Boulder,

Colo., Aug. 14-17, 1962), IRE Trans. Instr. 1-11, Nos. 3 and 4, 84 (Dec. 1962).

4851. Precision phase meter, D. M. Waters, D. Smith, and M. C. Thompson, Jr. IRE Trans. Instr. 1-11,

No. 2, 64-66 (Sept. 1962).

4852. Precursor electrons ahead of cylindrical

Shockwaves, D. L. Jones. Phys. Fluids 5. No. 9, 1121-1122 (Sept. 1962).

4853. Predicting the performance of long distance tropospheric communication circuits, A. P. Barsis, K. A. Norton, and P. L. Rice. IRE Trans. Commun. Systems CS-10, 2-22 (Mar. 1962).

48 54. Predicting the performance of tropospheric communication links, singly and in tandem, A. P. Barsis, K. A. Norton, and P. L. Rice. IRE Trans. Commun. System CS-10, No. 1, 2-22 (Mar. 1962). 4855. Prediction of pressure drop in two-phase single-component fluid flow, M. R. Hatch and

R. B. Jacobs. A.I.Ch.E. J 8, No. 1, 18-25 (Mar. 1962).

4856. Preparation of and electroplating on uranium,

D. E. Couch. Plating 49, No. 4, 363-367 (Apr. 1962)

.

4857. Preservation of edge detail in metallography,

W. D. Hayes, Jr., N. J. Tighe, and H. B. Kirkpatrick. Metal Progr. 81, No. 3, 112 (Mar. 1962).

4858. Primary processes in the photochemical de- composition of nitroalkanes, R. E. Rebbert and

N. Slagg. Bull. Soc. Chim. Belg. 71, 709-721

(June 1962)

.

4859. Problems in the temperature calibration of an X-ray diff Tactometer furnace, F. A. Mauer and

L. H. Bolz. (Proc. Tenth Annual Conf. Applications

in X-ray Analysis, Denver, Colo., Aug. 7-9, 1961),

Book, Advances in X-ray Analysis 5, 229 (Plenum

Press, Inc., New York, N. Y. , 1962).

4860. Proc. Second Intern. Symp. Thermodynamic and Transport Properties, D. H. Tsai and J. F. Masi. Editors, (Am. Soc. Mech. Engr. and Academic

Press Inc., New York, N. Y. , 1962).

4861. Production of Lyman alpha radiation in ion atom collisions, H. G. Dunn and D. Pretzer.

Phys. Rev. 128, No. 5, 2200-2206 (Dec. 1, 1962).

4862. Propagation of solar particles and the inter- planetary magnetic field, C. S. Warwick. (Proc. Intern. Conf. on Cosmic Rays and the Earth Storm) , J. Phep. Soc. Japan 17, Suppl. A, Pt . II, 571-572

(1962); J. Geophys. Res. 67, No. 4, 1333-1346

(Apr. 1962). 4863. Propagation of the low-frequency radio signal,

J. R. Johler. Proc. IRE 50, No. 4, 404-427 (Apr. 1962). 4864. Properties of dental amalgam made from

spherical alloy particles, N. C. Demaree and

D. F. Taylor. J. Dental Res. 41, No. 4, 890-906

(July- Aug. 1962). 4865. Properties of sllico-phosphate cements, J. N. Anderson. Dental Progr. 2, No. 2, 72-75 (Jan. 1962).

4866. Proton magnetic resonance in clay minerals,

R. L. Blaine. Highway Res. Board Bull. No. 287, 44-55 (June 1962).

4867. Pulsed radio soundings of the topside of the ionosphere in the presence of spread F, R. W. Knecht. J. Geophys. Res. 67, No. 3, 1178-1182

(Mar. 1962). 4868. Pyrolysis, L. A. Wall, Book, Analytical

Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 5, 181-248 (Interscience Publ. Inc., New

York, N. Y., 1962).

4869. Quantum-mechanical calculation of harmonic

oscillator transition probabilities. II. Threedimensional impulsive collisions, F. H. Mies

and K. E. Shuler. J. Chem. Phys. 37, No. 1, 177-181 (July 1, 1962). 4870. Quantum mechanical study of the hydrogen bimolecular exchange reaction, V. Griff ing and

A. R. Ruff a. J. Chem. Phys. 36, No. 5, 1389- 1394 (Mar. 1962).

4871. Radiation beam mapping with photographic

film, W. L. McLaughlin. Radiology 78, No. 1, 119-120 (Jan. 1962).

4872. Radiation hazards in realistic perspective,

L. S. Taylor, Phys. Today 15, 32-38 (June 1962). 4873. Radiation of sound by ocean waves, R. K. Cook. Book, Fourth International Congress on Acoustics, Pt . I, Paper No. 043 (Copenhagen,

Denmark, Aug. 21-28, 1962). 4874. Radiochemical analysis, R. E. Florin and

L. A. Wall. Book, Analytical Chemistry of Polymers,

ed. G. M. Kline, Pt . II, Chapt. 4, 349-395

(Interscience Publ. Inc., New York, N. Y.

,

1962)

4875. Radiological Society of North America Honoring Dr. Gioacchino Failla, L. S. Taylor. Radi- ology 78, No. 4, 515-517 (Apr. 1962). 4876. Radiolysis of ethane-1 , 1 , 1-

d

3 , L. J. Stief and P. Ausloos. J. Chem. Phys. 36, No. 11, 2904

(June 1, 1962). 4876A. Radiometeorology and its importance for the transmission of m-, dm- and cm waves to long distances, B. R. Bean, L. Fehlhaber, and J. Grosskopf.

Nachr. Z. (NTZ), p. 9-16 (Jan. 1962). 4877. Radio-wave propagation during World War II, K. A. Norton, Proc. IRE 50, No. 5, 698-704 (May 1962)

.

4878. Rate of spherulitic crystallization with

chain folds in polychlorotr if luoroethylene

,

J. D. Hoffman and J. J. Weeks. J. Chem. Phys.

37, No. 8, 1723-1741 (Oct. 196 2). 4879. Rates of thermal degradation of organic

polymers, S. L. Madorsky. SPE J. 18, No. 12, 1482-1490 (Dec. 1962).

1880. Ray-tracing formulas for uniaxial crystals,

0. N. Stavroudis. J. Opt. Soc. Am. 52, No. 2, 187-191 (Feb. 1962).
1962 4881. Reaction of methyl-d2 radicals with isobutane, isobutane-2-d and propane, W. M. Jackson, J. R. McNesby, and B. deB. Darwent. J. Chem. Phys. 37, No. 8, 1610-1615 (Oct. 1962).

4882. Reaction of oxygen with unkilned bone char

at low temperatures (^300°C), F. G. Carpenter

and V. R. Deitz. Proc. 7th Tech. Session on Bone Char 1961, p. 237 (Bone Char Research

Project Inc., Charlestown, Mass., 1962). 4883. Unassigned.

4884. Realistic estimates of error, W. J. Youden.

J. ISA 8, No. 10, 57-58 (Oct. 1962).

4885. Recent experiments on liquid helium vapor pressure measurements from 2° to 4°K, G. H. Cataland, M. H. Edlow, and H. H. Plumb. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . I, 413-417 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

4886. Recent sporadic E experimental work in the United States, J. F. DeGregorio, J. W. Finney,

K. Kildahl, and E. K. Smith. Book, Ionospheric

Sporadic E, Ed. E. K. Smith and S. Matsushita,

p. 131-142 (Pergamon Press Inc., New York, N. Y. , 1962).

4887. Reference tables for 40$ iridium-60$ rhodium

versus iridium thermocouples, G. F. Blackburn

and F. R. Caldwell. Book, Temperature, Its Meas- urement and Control in Science and Industry 3, Pt. 2, 161-175 (Reinhold Publ. Corp., New York,

N. Y., 1962). 4888. Reference tables for the palladium vs platinum-15% iridium thermocouple, P. D. Freeze,

F. R. Caldwell, and E. R. Davis, Wright Patterson

Air Force Base Tech. Doc. Rept . No. ASD-TDR-62-

525, p. 1-79 (Dec. 1962).

4889. Reflection mechanisms for sporadic E, K. Tao

and J. R. Wait. Book, Ionospheric Sporadic E, Ed. E. K. Smith and S. Matushita, p. 13-27 (Pergamon Press Inc., New York, N. Y. , 1962). 4890. Refraction and dispersion of synthetic sap- phire, I. H. Malitson. J. Opt. Soc. Am. 52, No.

12, 1377-1379 (Dec. 1962). 4891. Relative power transmission characteristics

of the ear and the skull from hearing threshold

data, E. L. Smith. Book, The Organization Com- mittee of the Fourth International Congress on Acoustics, Pt. I, Paper No. H48 (Copenhagen,

Denmark, 196 2). 4892. Relative signs of proton spin-spin coupling

constants, E. Lustig. J. Chem. Phys. 37, No. 11, 2725-2726 (Dec. 1962).

4893. Relaxation of nonequilibrium distributions,

K. E. Shuler. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt

.

1, 27-34 (Reinhold Publ. Corp., New York, N. Y.

,

1962)

.

4894. Remote phase control of station WWV, R. L. Fey, J. B. Milton, and A. H. Morgan. Nature 193,

No. 4820, 1063-1064 (Mar. 17, 1962).

4895. Report of the Geophysical Monograph Board,

A. H. Shapley. Trans. Am. Geophys. Union 43, 61- 62 (Mar. 1962).

4896. Unassigned.

4897. Reproducibility of the international standard of light, R. P. Teele. J. Opt. Soc. Am. 52, No. 7, 826-827 (July 1962). 4898. Research and the saving of teeth, G. C. Paffenbarger. J. Prosthetic Dentistry 12, No. 2, 369-383 (Mar. -Apr. 1962).

4899. Research in ASTM, B. L. Wilson. Mater. Res.

Std. 2, No. 8, 694-695 (Aug. 1962). 4900. Resistance thermometry in the liquid helium

temperature region, M. H. Edlow and H. H. Plumb.

Book, Temperature, Its Measurement and Control

in Science and Industry 3, Pt . 1, 407-411

(Reinhold Publ. Corp., New York, N. Y. , 1962).

4901. Review of fundamental developments in analysis: emission spectrometry, B. F. Scribner.

Anal. Chem. 34, No. 5, 200R-209R (1962). 4901A. Roger Joseph Boscovich and the combination

of observations, C. Eisenhart. Actes Symp. Intern.

R. J. Boskovic 1961, p. 19-25 (1962). 4902. Rotation-vibration spectrum of matrix-isolated hydrogen chloride, L. J. Schoen, D. E. Mann, C. Knobler, and D. White. J. Chem. Phys.

37, No. 5, 1146-1147 (Sept. 1962). 4903. Rotational perturbations in CN. I. Zerofield theory, optical Zeeman effect, and microwave transition probabilities, H. E. Radford

and H. P. Broida. Phys. Rev. 128, No. 1, 231-

242 (Oct. 1962). 4904. Safety levels in military inventory management, F. L. Alt. Operations Res. 10, No. 6, 786-794 (Dec. 1962). 4905. Scattered radiation from large Cs 1 37 sources,

L. Costrell. Health Phys. 8, No. 5, 491-498

(Oct. 1962).

4906. Scattered radiation from large cobalt-60 calibrating sources, L. Costrell. Health Phys.

J. 8, No. 3, 261-272 (June 1962). 4907. "Second breakdown" in transistors, H. A. Schafft and J. C. French. IRE Trans. Electron

Devices ED-9, No. 2, 129-136 (July 1962). 4908. Second-order effects in the mechanics of materials, C. A. Truesdell, Proc. Intern. Union Theoretical and Applied Mechanics Symp.

(Haifa, Israel, 1962). 4909. Sferic observations of the severe weather

on May 19, 1960, C. A. Samson and R. F. Linfield. J. Geophys. Res. 67, No. 2, 627-635

(Feb. 196 2). 4910. Signs of nuclear resonance coupling con- stants in saturated aliphatic systems, H. Finegold. Proc. Chem. Soc. (London, England), 6, 213-214 (June 1962). 4911. Simple strain gauge-based load controller,

L. Mordfin and R. L. Bloss. Rev. Sci. Instr.

33, No. 7, 772-773 (July 1962). 4912. Solar flare effects in the F-region of the ionosphere, R. W. Knecht and R. E. McDuffie.

(Proc. Intern. Conf. Cosmic Rays and the Earth

Storm), J. Phys. Soc. Japan 17, Suppl. A, Pt . I, 280-285 (1962). 4913. Solar particles in interplanetary space,

C. S. Warwick. Sky and Telescope 27, No. 3, 133-

136 (Sept. 1962).

4914. Solubility product phenomena in hydroxya- patite-water systems, H. M. Rootare, V. R. Deitz, and F. G. Carpenter. J. Colloid Sci. 17, No. 3, 179-206 (Mar. 1962). 4915. Some auroral zone disturbances at times of magnetic micropulsation storms, W H. Campbell.

(Proc. Inter. Conf. Cosmic Rays and the Earth

Storm), J. Phys. Soc. Japan 17, Suppl. A, Pt

.

I, 112-116 (Jan. 1962).

4916. Some characteristics of dialysable polyvinyl- pyrrolidone components, S. A. Mancewicz,

K. C. Hoerman, and A. F. Forziati. Chem. Ind. p. 98-99 (Jan. 13, 1962).

4917. Some electrical properties of the porous graphite contact on p-type silicon, G. G. Harman,

T. Higier, and O. L. Meyer. J. Appl. Phys. 33, No. 7, 2206-2208 (July 1962).

4918. Some free products of cyclic groups, M. Newman. Mich. Math. J. 9, 369-373 (Dec. 1962).
1962

4919. Some limits on the effect of coronal self- emission upon the excitation state of coronal

ions, R. N. Thomas and C. Pecker. Astrophys.

J. 137, No. 3, 967-980 (Apr. 1, 1962).

4920. Some observations of 2.89 Mc/s equivalent antenna temperatures at the auroral zone,

C. G. Little, G. M. Lerfald, and R. Parthasarathy. J. Atmospheric Terrest. Phys . 53, 27 5- 286 (Dec. 1961); AGARDograph Radio Wave Absorption in the Ionosphere No. 53 (Pergamon Press

Inc., London, England, 1962).

4921. Some observations of metal distribution,

F. Ogburn and M. A. Morris. Plating 49, No. 1, 72-75 (Jan. 1962). 4922. Some observations on growing crystals of argon, L. H. Bolz, H. P. Broida, and H. S. Peiser. Acta Cryst . 15, No. 8, 810-812 (Aug. 1962). 4923. Some problems in temperature measurements

from line spectra, J. T. Jefferies. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt.l, 703-711 (Rein- hold Publ. Corp., New York, N. Y. , 1962).

4924. Some problems of color identification, K. L. Kelly. J. Am. Inst. Architects 37, No. 3, 80-82

(Mar. 1962). 4925. Some problems of improving accuracy of measurement, A. V. Astin, IRE Conv . Record, Pt

.

9, p. 9-17 (1962). 4926. Some properties of dirty contacts on semi- conductors and resistivity measurements by a two-terminal method, G. G. Harman and T. Higier.

J. Appl. Phys. 33, No. 7, 2198-2206 (July 1962). 4927. Some results and problems in calibrating the

NBS photelectric pyrometer of 1961, R. D. Lee. Proc. Advisory Committee on Thermometry to the

Intern. Comm. on Weights and Measures, 6th

Session, p. 79-90 (Sept. 26-27, 1962). 4928. Some tensile properties of amalgams, M. S. Rodriquez and G. Dickson. J. Dental Res. 41, No. 4, 840-852 (July- Aug. 1962). 4929. Some topics in quantum statistics. The Wigner function and transport theory, H. Mori,

I. Oppenheim, and J. Ross. Book, Studies in Sta- tistical Mechanics, Ed. DeBoer and Uhlenbeck, I, Pt. C, 218-298 (North Holland Publ. Co., Amsterdam, The Netherlands, 1962). 4930. Spectrophotof luorometric studies of de- graded cotton cellulose, S. D. Toner and

K. F. Plitt. TAPPI 45, No. 8, 681-688 (1962). 4931. Spectrophotometric determination of hydro- peroxide in diethyl ether, W. C. Wolfe. Anal.

Chem. 34, No. 10, 1328-1330 (Sept. 1962). 4932. Spin lattice relaxation in two rare earth double nitrates, R. P. Hudson and B. W. Mangum.

II Nuovo Cimento 23, Serie X, 1133-1135

(Mar. 1962). 4933. Sporadic-E propagation with 3fi sec pulses,

G. R. Ochs, R. J. Carpenter, and E. K. Smith.

Book, Ionospheric Sporadic E, Ed. E. K. Smith

and S. Matsushita, p. 143-148 (Pergamon Press

Inc., New York, N. Y. , 1962). 4934. Stainless steel for standard weights, M. W. Jensen. Metric Measures 5, No. 3, 29 (May 1962).

4935. Standardization of thermal emittance measurements, W. N. Harrison, J. C. Richmond, and

H. K. Skramstad. Wright Air Devel. Ctr. Tech.

Rept. Pt. Ill, 1-33 (Mar. 1962).

4936. Standard electromotive force of the cell H2 ;HBr(m), AgBr; Ag from 0 to 50°, H. B. Hetzer,

K. A. Robinson, and R. G. Bates, J. Phys. Chem.

66, No. 8, 1423-1426 (Aug. 1962). 4937. Standard tests for electrical properties,

A. H. Scott. Soc. Plastics Engrs. J. 18, No. 11, 1375-1378 (Nov. 1962). 4938. Standards and the microwave profession,

J. M. Richardson. IRE Trans. Microwave Theory

Tech. MTT-10, No. 6, 413-415 (Nov. 1962). 4939. Standards for the future, R. D. Huntoon.

Proc. Annual Spring Conf . Standards Engineers

Society, Boston Section and Company Member

Conf. of American Standards Association, May 24-

25, 1962 (Boston, Mass., 1962). 4940. Standards for vinyl chloride plastics, F. W. Reinhart. (Proc. SPE Regional Tech. Conf. New

York, N. Y. , Nov. 15, 1961), SPE J. 18, 308-311

(Mar. 1962).

4941. Strange sounds in the atmosphere, Part I, R. K. Cook. Sound— Its Use and Control 1, No. 2, 12-16 (Mar. -Apr. 1962). 4942. Strange sounds in the atmosphere, Part II,

R. K. Cook and J. M. Young. Sound— Its Use and Control 1, No. 3, 25-33 (May- June 1962). 4943. Strengthening of hot-work die steels, C. R. Irish and S. J. Rosenberg. Trans. ASM 55, No. 3, 613-623 (Sept. 1962). 4944. Stress corrosion of high strength cast aluminum alloys, F. M. Reinhart and W. F. Gerhold. Corrosion 18, No. 4, 158t (Apr. 1962).

4945. Stress-strain relationships in yarns subjected to rapid impact loading. 8. Shockwaves, limiting breaking velocities, and critical velocities, J. C. Smith, J. M. Blandford, and

K. M. Towne. Textile Res. J. 32, No. 1, 67-76

(Jan. 1962).

4946. Stress-strain relationships in yarns subjected to rapid impact loading. 9. Effect of yarn structure, J. C. Smith, J. M. Blandford,

P. J. Shouse, and K. M. Towne. Textile Res. J. 32, No. 6, 472-480 (June 1962).

4947. Structure and photodetachment spectrum of

the atomic carbon negative ion, M. L. Seman and

L. M. Branscomb. Phys. Rev. 125, No. 5, 1602-

1608 (Mar. 1962). 4948. Structure and structure imperfections of solid fi -oxygen, E. M. Horl. Acta Cryst. 15, Pt.

9, 845-850 (Sept. 1962).

4949. Unassigned.

4950. Studies in non-equilibrium rate processes.

V. The relaxation of moments derived from a master equation, K. E. Shuler, K, . Andersen, and

G. H. Weiss. J. Math. Phys. 3, No. 3, 550-556 (May-June 1962)

.

4951. Studies of errors in economic statistics,

D. Rosenblatt. 1962 Proc. Business and Economic Statistics Section, Am. Stat. Assoc., p. 217 (1962)

.

4952. Study of Knudsen's method of pressure divi- sion as a means of calibrating vacuum gages,

S. Schuhmann. Trans. Ninth Natl. Vacuum Symp.,

1962, American Vacuum Society, Pt . III. p. 463-

467 (1962). 4953. Study of the effect of large aperture on the performance of an Ebert spectrometer,

L. R. Megill and L. K. Droppleman. j. Opt. Soc.

Am. 52, No. 3, 258-261 (Mar. 1962).

331
196 2 4954. Study of "valley problem" with a ray tracing

program, K. Davies and A. K. Saha. Electron

Density Profiles in the Ionosphere and Exosphere,

p. 162-166 (Pergamon Press, Inc., New York, N. Y.

,

1962).

4955. Sudden cosmic noise absorption at the moment

of geomagnetic storm sudden commencements, C. G. Little, J. Ortner, R. R. Brown, T. R. Hartz,

0. Holt, B. Hultqvist, and H. Leinbach. (Proc. Intern. Conf . Cosmic Rays and the Earth Storm),

J. Phys. Soc. Japan 17, Suppl. A, Pt . I, 103-105

(1962). 4956. Sum rules for vibrational-rotational energy

levels including centrifugal distortion, H. C. Allen, Jr. ( and W B. Olson. J. Chem. Phys. 37,

No. 2, 212-214 (July 1962). 4957. Sums of elements of matrix powers, M. Newman. Pacific J. Math. 12, 627-635 (1962). 4958. Surface behavior of silver single crystals in fused sodium chloride, J. Kruger and K. H. Stern.

J. Electrochem. Soc. 109, No. 10, 889-894 (Oct. 1962). 4959. Surface condition effect on bond strength of steel beams embedded in concrete, J. 0. Bryson

and R. G. Mathey. J. Am. Concrete Inst. 59, No. 3, 397-405 (Mar. 1962). 4960. Surface flammability measurements by the radiant panel methods, A. F. Robertson. ASTM

Proc. 62, 33-46 (1962). 4961. Surface preparation of solid metallic

samples for X-ray spectrochemical analysis,

R. E. Michaelis and B. A. Kilday. Book, Ad- vances in X-ray Analysis 5, 405-411 (Plenum

Press, Inc., New York, N. Y. , 1962).

4962. Susceptor elements for high temperature induction heating, S. Hasko and H. S. Parker.

Bull. Am. Ceram. Soc. 41, No. 7, 467 (July 15, 1962).

4963. Switching properties in f erroelectrics of the family Bi 4 Ba m_ 2 Ti m+1 03 2 , P. H. Fang

and E. Fatuzzo. J. Phys. Soc. Japan 17, 238

(1962)

.

4964. Symmetry conditions for internal friction

caused by jumping of point defects in crystals,

J. B. Wachtman, Jr., and H. S. Peiser. J. Appl

.

Phys. Letters 1, No. 1, 20-22 (Sept. 1962).

4965. Symposium on teaching materials: Aspects of material behavior significant to engineers,

J. M. Frankland. (Proc. American Society of Civil

Engineers), J. Eng. Mech. Div. Paper 3246, p. 75-

81 (Aug. 1962).

4966. Synthesis of an immittance function with two negative impedance converters, S. B. Geller. IRE Trans. Circuit Theory CT-9, No. 3, 291 (Sept. 1962)

.

4967. Synthesis of higher ketoses by aldol reactions. I. Three D-heptuloses , R. Schaffer and

H. S. Isbell. J. Organ. Chem. 27, 3268-3270 (1962). 4968. Systematic errors in physical constants, W. J. Youden. Phys. Today 14, No. 9, 32-42 (Sept. 1961); Technometrics 4, 111-123 (Feb. 1962). 4969. Systematic procedures, G. M. Brauer and E. Horowitz. Book, Analytical Chemistry of Polymers,

ed. G. M. Kline, Pt . Ill, Chapt . 1, 1-140 (Inter- science Publ. Inc., New York, N. Y. , 1962).

4970. Tchebycheff approximations by exponentials,

J. R. Rice. J. Soc. Ind. Appl. Math. 10, No. 1, 149-161 (Mar. 1962). 4971. Technical training in the weights and meas- ures program, M. W. Jensen. Sourthern Weights

and Measures New Letter 14, No. 12, 2-5 (Dec. 1962)

.

4972. Technology of electrodeposition, F. Ogburn. Plating 49, No. 8, 850 (Aug. 1962).

4973. Temperature dependence of elastic constants

of vitreous silica, S. Spinner. J. Am. Ceram. Soc.

45, No. 8, 394 (Aug. 1962).

4974. Temperature dependence of magnetic losses,

J. J. Gniewek and R. L. Powell. (Proc. 1961 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering 7, Paper H-l, 303-310

(Plenum Press, Inc., New York, N. Y. , 1962). 4975. Tensile strength and modulus of elasticity

of tooth structure and several restorative

materials, R. L. Bowen and M. S. Rodriguez,

J. Am. Dental Assoc. 64, No. 3, 379-387 (Mar. 1962)

.

4976. Tentative U. S. standard for colors of signal

lights, F. C. Breckenridge. Ilium. Eng. 57, No.

11, 718-721 (Nov. 1962).

4977. Testing of ball bearings with five different separator materials at 9200 RPM in liquid nitrogen, J. A. Brennan, W. A. Wilson, R. Radebaugh, and B. W. Birmingham. (Proc. 1961 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering

7, Paper G-2, 262-272 (Plenum Press, Inc., New

York, N. Y., 1962). 4978. Tests for contingency tables and Markov

chains, S. Kullback, M. Kupperman, and H. H. Ku. Technometrics 4, No. 4, 573-608 (Nov. 1962). 4979. The ammonia beam maser as a standard of frequency, J. A Barnes, D. W. Allan, and A. E. Wainwright. IRE Trans. Instrumentation I- II, 26-30 (June 1962).

4980. The application and behavior of elastomers

at cryogenic temperatures, R. F Robbins, D. H. Weitzel, and R. N. Herring. (Proc. 1961 Cryogenic

Eng. Conf.), Book, Advances in Cryogenic Engineering 7, Paper H-6 , 343-352 (Plenum Press, Inc., New York, N. Y. , 1962)

.

4981. The application of gas- lubricated bearings to

a miniature helium expansion turbine, B. W. Birmingham, H. Sixsmith, and W. A. Wilson. (Proc. 1961 Cryogenic Eng. Conf.), Book, Advances in Cryogenic Engineering 7, Paper A-4 , 30-42 (Plenum Press,

Inc., New York, N. Y. , 1962).

4982. The application of NMR in determination of the structure of cyclonols. I. The structure of cyclohexane-1 ,3-diols, H. Finegold and H. Kwart.

J. Org. Chem. 27, 2361-2365 (July 1962).

4983. The atmospheric sciences, 1961-1971, C. G. Little. Book, Goals and Plans for Aeronomy III, Natl. Acad. Sci.-Natl. Res. Council Publ. 946

(1962)

.

4983A. The basis of the measurement system, A. V. Astin. Proc IRE 50, No. 5, 614-615 (May 1962). 4984. The bound-free absorption coefficient of the hydrogen negative ion, S. Geltman. Astrophys.

J. 136, No. 3, 935-945 (Nov. 1962). 4985. The calibration at the National Bureau of Standards of mass standards for ultramicroanalysis, L. B. Macurdy. Book, Vacuum Micro- balance Techniques, ed. R. F. Walker, 2, 165-175

(Plenum Press, Inc., New York, N. Y. , 1962). 4986. The calibration of inductive voltage dividers,

T. L. Zapf. ISA 1962 Proc. 17, Pt . I, 10.2.62-1

to 10.2.62-8 (1962)

.

4987. The calibration of temperature standards on the international practical temperature scale of 1948, J. P. Evans. Proc. ISA 17th Annual Instru- ment-Automation Conf. and Exhibit (Oct. 1962). 4988. The conductive-disk method of measuring the thermal conductivity of insulations, H. E. Robinson. Su£pl. Bull. Intern. Inst. Refrigeration Annexe 1962-1, p. 43-50 (Aug. 1962).
1962

4989. The detection and study of solar cosmic rays

by radio techniques, D. K. Bailey. (Proc. Intern. Conf. Cosmic Rays and the Earth Storm), J. Phys.

Soc. Japan 17, Suppl. A, Pt . I, 93-97 (1962). 4990. The determination of absolute temperatures

from sound velocity measurements, G. H. Cataland,

M. H. Edlow, and H. H. Plumb. Book, Temperature,

Its Measurement and Control in Science and In- dustry 3, Pt. 1, 129-132 (Reinhold Publ. Corp., New York, N. Y. , 1962).

4990A. The determination of beta-emitting radio- nuclides in aqueous formamide solutions,

A. Schwebel. Proc. Bioassay and Analytical Chemistry Meeting, Argonne Natl. Lab., Argonne,

111., Oct. 1962, ANL Publ. 6637, pp. 29 (1962). 4991. The effect of electrolytes on the sodium chromotropism of bix- (meso-2 , 3-diaminobutane)

nickel (II) ions, D. L. Leussing, J. Harris, and P. Wood. J. Phys. Chem. 66, 1544-1546 (Aug. 1962).

4992. The effect of experimental variables in- cluding the martensitic transformation on the low-temperature mechanical stainless steel,

C. J. Guntner and R. P. Reed. Trans. ASM 55, No. 3, 399-410 (Sept. 1962).

4993. The effect of geomagnetic activity on the

F 2 region over Central Africa, R. G. Rastogi.

J. Geophys. Res. 67, No. 4, 1367-1374 (Apr. 1962)

.

4994. The effect of moisture on heat transfer through insulated flat-roof constructions,

F. J. Powell. Suppl. Bull. Intern. Inst. Re- frigeration Annexe 1962-1, p. 61-70 (Aug. 1962).

4995. The effect of temperature and humidity on the oxidation of air-blown asphalts, P. G. Campbell, J. R. Wright, and P. B. Bowman.

Mater. Res. Std. 2, No. 12, 988-995 (Dec. 1962).

4996. The efficiency of an ideal refrigerator,

R. B. Jacobs. (Proc. 1961 Cryogenic Eng. Conf.),

Book, Advances in Cryogenic Engineering 7, Paper

L-ll 567-571 (Plenum Press, Inc., New York,

N. Y., 1962).

4997. The error rate in a multiple-frequency-shift

system and the output signal/noise ratio in a frequency modulation and a pulse-code-modulation/

frequency-shift system, H. Akima. Intern. Conf. Satellite Communication, London, England, Nov. 22-28, 1962, 305-310 (Dec. 1962).

4998. The evolution of a conference, J. M. Richardson. (Intern. Conf. Electromagnetic Measurements,

Boulder, Colo., 1962), IRE Trans. Instr. I- 11, Nos. 3 and 4, 82 (Dec. 1962).

4999. The evolution of concepts and languages of computing, R. D. Elbourn and W. H. Ware. Proc. IRE 50, No. 5, 1059-1066 (May 1962).

5000. The extrapolation of the orthorhombic N- paraffin melting properties to very long chain

lengths, M. G. Broadhurst. J. Chem. Phys. 36,

No. 10, 2578 (May 15, 1962).

5001. The giant resonance of the nuclear photoeffect, E. G. Fuller and E. Hayward. Book, Nuclear Reactions II, Chapt. Ill, 113-194 (North-Holland Publ. Co., Amsterdam, The Netherlands, 1962).

5002. The growth and roots of electronic com- puters, J. L. Little. Student Quart, and EE digest 1, No. 1, 64-70 (Joint Publ. Am. Inst. Elec. Engr. and IRE, Sept. 1962).

5003. The Hall effect, D. 0. Webster. Student

Quart, and EE Digest 1, No. 1, 82-86 (Joint Publ.

Am. Inst. Elec. Engr. and IRE, Sept. 1962). 5004. The heat capacity of diamond at high temp- eratures, A. C. Victor. J. Chem. Phys. 36, No.

7, 1903-1911 (Apr. 1962).

5005. The history of Pt 27, E. Wichers. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 259-262 (Rein- hold Publ. Co., New York, N. Y. , 1962).

5006. The hyperfine structure of the rotational

spectrum of HDO, Y. Beers and E. B. Treacy.

J. Chem. Phys. 36, 1473 (Mar. 1962).

5007. The ideal lovibond color system, D. B. Judd,

G. J. Chamberlin, and G. W. Haupt . J. Opt. Soc.

Am. 52, No. 7, 813-819 (July 1962).

5008. The industrial significance of NBS research,

G. M. Kline. (Lecture at Conf. Europeenne des Plastiques et du Caoutchouc, Paris, France, May 28, 1962), Mod. Plastics 40, No. 2, 149

(Oct. 1962).

5009. The influence of temperature and pressure on Theological properties of polymers, R. S. Marvin.

J. Japan Soc. Testing Mater. Rheology Issue 11, No. 104, 303-307 (May 1962).

5010. The information problem in government, S. N. Alexander. Proc. Engineering Information Symp. (Sponsored by the Engineers Joint Council) , p. 15-16 (Jan. 17, 1962).

5011. The intermediate state of some hard superconductors, V. D. Arp, R. Kropschot, and T. S. Craig, p. 135-141 (Interscience Publ., New York,

N. Y., 1962).

5012. The invar iance of symmetric functions of singular values, M. Marcus and H. Mine. Pacific

J. Math. 12, No. I, 327-332 (1962).

5013. The ionization constant of p-nitrophenol

from 0 to 60°, G. F. Allen, R. A. Robinson, and

V. E. Bower. J. Phys. Chem. 66, No. 1, 171-172

(Jan. 1962).

5014. The ionosphere over antarctica, W. R. Piggott and A. H. Shapley. Antarctic Res. Geophys.

Mono. 7, 111-126 (1962).

5015. The kinetics of Cs

+ desorption from tungsten,

M. D. Scheer and J. Fine. J. Chem. Phys. 37,

No. 1, 107-113 (July 1962).

5016. The kinetics of the heat precipitation of collagen, J. M. Cassel, L. Mandelkern, and

D. E. Roberts. J. Am. Leather Chemists Assoc.

57, No. 11, 556-575 (Nov. 1962).

5017. The maximum number of zeros in the powers

of an undercomposable matrix, M. Marcus. Duke

Math. J. 29, No. 4, 581-588 (Dec. 1962).

5018. The measurement of characteristics of ter- restrial radio noise, W. Q. Crichlow, Editor. URSI Spec. Rept. No. 7 (Elsevier Publ. Amsterdam, The Netherlands, 1962),

5019. The measurement of ionospheric drifts by means of a Doppler technique, K. Davies. J. Geophys. Res. 67, No. 12, 4909-4913 (Nov. 1962)

.

5020. The measurement of voltage by the use of the Stark effect, Y. Beers and G. L. Strine. (Intern. Conf. Precision Electromagnetic Measu: Boulder, Colo., 1962), IRE Trans.

Nos. 3 and 4, 171-176 (Dec. 1962).

333
196 2 5021. The molecular structure of chloroform,

M. Jen and D. R. Lide, Jr. J. Chem. Phys. 36,

No. 9, 2525 (May 1962)

.

5022. The morphology of mid-latitude 6300 angstrom

arcs, T. Tohmatsu and F. E. Roach. J. Geophys.

Res. 67, No. 5, 1817-1821 (May 1962).

5023. The NASA fixed frequency topside sounder

program, R. W. Knecht and T. E. VanZandt . (NATO

Conf. Series), Book, Electron Density Profiles in the Ionosphere and Exosphere, Ed. B. Maehlum, 2, 246-260 (Pergamon Press Inc., New York, N. Y.

,

1962)

.

5024. The National Bureau of Standards photo- electric pyrometer of 1961, R. D. Lee. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 507-515 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

5025. The National Bureau of Standards reactor

facility, C. 0. Muehlhause. Capital Chemist 12, No. 1 , 7-10 (Jan. 1962)

.

5026. The National Bureau of Standards: Where measurement is the central theme, C. S. McCamy.

Ind. Phot. 11, No. 8, 28 (Aug. 1962).

5027. The night-E layer, G. A. M. King. Book, Ionospheric Sporadic E, Ed. E. K. Smith and S. Matsushita, p. 219-231 (Pergamon Press Inc., New York, N. Y. , 1962).

5028. The nuclear photoeffect in holmium and

erbium, E. G. Fuller and E. Hayward. Nucl.

Phys. 30, 613-635 (Mar. 1962).

5029. The occurrence of sporadic E, E. K. Smith.

Book, Ionospheric Sporadic E, Ed. E. K. Smith

and S. Matsushita, p. 3-12 (Pergamon Press Inc., New York, N. Y. , 1962).

5030. The occurrence of sporadic E during the IGY,

H. I. Leighton, A. H. Shapley, and E. K. Smith. Book, Ionospheric Sporadic E. Ed. E. K. Smith and

S. Matsushita, 2, 166-177 (Pergamon Press Inc., New York, N. Y. , 1962)

.

5031. The photodisintegration of bismuth and the lead isotopes, E. G. Fuller and E. Hayward. Nuclear Phys. 33, 431-448 (1962). 5032. The photolysis and radiolysis of CH3 N 2 CH 3 and CH3 N 2 CH3-CD3 N 2 CD3 mixtures, R. E. Rebbert

and P. Ausloos. J. Phys. Chem. 66, No. 11, 2253- 2258 (Nov. 1962).

5033. The present state of atomic spectra, C. Moore. Japan Anal. 11, No. 11, 1199-1202 (1962). 5034. The present status of radiometric calibrations in the ultraviolet spectrum, R. Stair. Re- port No. Las-TR-199-37 (University of Chicago,

Chicago, 111., Nov. 1962). 5035. The propagation of electromagnetic waves

along the earth's surface, J. R. Wait. Book, Electromagnetic Waves, ed. R. E. Langer, p. 243- 290 (The University of Wisconsin Press, Madison, Wise, 1962).

5036. The Pythagorean theorem in certain symmetry

classes of tensors, M. Marcus and H. Mine. Trans. Am. Math. Soc . 104, No. 3, 510-515 (Sept. 1962)

.

5037. The radiant energy from sources in the far infrared, E. K. Plyler, D. J. C. Yates, and H. A. Gebbie. J. Opt. Soc. Am. 52, No. 8, 859-861

(Aug. 1962).

5038. The radio refractive index of air, B. R. Bean. Proc. IRE 50, No. 3, 260-273 (Mar. 1962).

5039. The rapid selector and other NBS document

retrieval studies, J. L. Pike and T. C. Bagg.

Proc. 11th Annual Meeting and Conf. National Microfilm Assoc., Wash. D. C. , Apr. 25-27,

1962, Microfilm Assoc., XI, No. 1, 213-227

(Annapolis, Md . , Aug. 1962).

5040. The representation of diurnal and geographic variations of ionospheric data by numerical

methods,. W. B. Jones, and R. M. Gallet. Rev. Tele- commun. , Trans. 17, 35-55 (1962); Telecommunication J. 29, No. 5, 129-149 (May 1962).

5041. The resistive transition in Nb 3 Sn, D. Cline,

R. H. Kropschot, V. Arp, and J. H. Wilson.

(Proc. Intern. Conf. High Magnetic Fields),

Book, High Magnetic Fields, p. 580-583 (Mass.

Inst. Technol. Press and John Wiley and Sons,

Inc., New York, N. Y. , 1962).

5042. The role of capacitance in the National Ref- erence Standards for high frequency impedance,

R. N. Jones and R. E. Nelson. Proc. ISA 17, Pt.

II, 18.1.62-1-18.1.62-6 (Oct. 1962).

5043. The role of temperature in our measuring

system, A. G. McNish. Book, Temperature, Its Measurement and Control in Science and Industry

3, Pt. 1, 35-38 (1962). 5044. The scientific contribution of William Weber

Coblentz, E. K. Plyler, J. Appl. Spectry. 16, No. 3, 73-77 (1962). 5045. The shape of the geomagnetic field boundary

under uniform external pressure, R. J. Slutz.

J. Geophys. Res. 67, No. 2, 505-513 (Feb. 1962).

5046. The specific heat at constant volume of para- hydrogen at temperatures from 15 to 90 K and pressures to 340 atm, B. A. Younglove and D. E. Diller. Cryogenics 2, No. 6, 1-5 (Dec. 1962).

5047. The specific heat of saturated liquid para- hydrogen from 15 to 32 K, B. A. Younglove and

D. E. Diller. Cryogenics 2, No. 5, P. 1-5

(Sept. 1962).

5048. The speed of light, A. G. McNish. IRE Trans.

Instr. 1-11, Nos. 3 and 4, 138-148 (Dec. 1962).

5049. The speed of processes involved in electroplating, movement of solute, attainment of steady

state and formation of metal, A. Brenner, 49th

Annual Tech. Proc. Am. Electroplaters Soc,

p. 9-13 (1962). 5050. The spontaneous martensitic transformation

in 18$ Cr, 8$ Ni steels, R. P. Reed. Acta Met.

10, 865-877 (Sept. 1962).

5051. The standards challenge, A. H. Scott. In- sulation 8, No. 2, 48-50 (Feb. 1962).

5052. The structure of lithium dipotassium tri- metaphosphate monohydrate, E. D. Eanes and

H. M. Ondik. Acta Cryst . 15, Pt . 12, 1280-1285

(Dec. 1962).

5053. The structure of regions of coronal-line

emission, J. T. Jefferies, C. W. Pecker, and

R. N. Thomas. Astrophys. J. 135, No. 2 653-655

(Mar. 196 2). 5054. The structure of some subgroups of the modular group, M. Newman, Illinois J. Math. 6, No. 3, 480-487 (Sept. 1962).

5055. The system Bi 2 03 -B 2 0 3

, E. M. Levin and

C. L. McDaniel. J. Am. Ceram. Soc. 45, No. 8, 355-360 (Aug. 1962). 5056. The temperature dependence of flow and fracture characteristics of an age-hardenable

alloy, W. D. Jenkins and W. A. Willard. Trans. ASM 55, No. 3, 580-598 (Sept. 1962).

5057. The text revision of the international temperature scale of 1948, H. F. Stimson. Book, Temperatures, Its Measurement and Control in Science and Industry 3, Pt . I, 59-66 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

5058. The thermal conductivity of solid nitrogen,

H. M. Roder. Cryogenics 2, No. 5, 302-304 (Sept. 1962)

.

334
1962

5059. The thermal properties of powder insulators

in the temperature range 300O-4°K, D. Cline and

R. H. Kropschot. (Proc. Conf. Radiative Transfer

from Solid Materials, Boston, Mass., Dec. 12-13,

1960), Book, Radiative Transfer from Solid Materials, ed. H. H. Blau, Jr., and H. Fischer, Sec.

I, p. 61-81 (Macmillian and Co., New York,

N. Y. , 1962).

5060. The thermodynamic scale of temperature below

1°K, R. P. Hudson. Book, Temperature, Its Meas- urement and Control in Science and Industry 3, Pt. 1, 51-57 (Reinhold Publ. Corp., New York,

N. Y., 1962).

5061. Unassigned.

5062. The thermodynamic temperature scale, its definition and realization, C. M. Herzfeld. Book, Temperature, Its Measurement and Control in Science and Industry 3, Pt . 1, 41-50 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

5063. The three dimensional nature of boundarylayer instability, P. S. Klebanoff, K. D. Tidstrom, and L. M. Sargent. J. Fluid Mech. 12, Pt. I, 1-34 (Jan. 1962).

5064. The use of a Venturi tube as a quality meter,

R. V. Smith, P. C. Wergin, J. F. Ferguson, and

R. B. Jacobs. J. Basic Eng. 84, 411-412 (Sept. 1962).

5065. The vapor phase fluorescence and its re- lationship to the photolysis of propionaldehyde

and the butyraldehydes , R. P. Borkowski and

P. Ausloos. J. Am. Chem. Soc . 84, No. 21, 4044- 4048 (Nov. 1962).

5066. The vapor phase radiolysis of propane-d8 in the presence of other hydrocarbons, S. G. Lias

and P. Ausloos. J. Chem. Phys. 37, No. 4, 877-

883 (Aug. 15, 1962).

5067. The vapor pressure of 20 K equilibrium hydrogen, L. A. Weber, D. E. Diller, H. M. Roder, and R. D. Goodwin. Cryogenics 3, 236-238

(June 1962).

5068. The ventilating problem in fallout shelters,

P. R. Achenbach. Am. Artisan 99, No. 5, 64-70

(May 1962).

5069. The "vicious cycle" in secondary batteries

a mathematical approach, W. G. Eicke, Jr.

J. Electrochem. Soc. 109, No. 5, 364-368

(May 1962)

.

5070. The viscous heating correction for viscometer flows, E. A. Kearsley. Trans. Soc. Rheol. VI, 253-261 (1962). 5071. Theory and methods of optical pyrometry,

H. J. Kostkowski and R. D. Lee. Book, Temperature, Its Measurement and Control in Science

and Industry 3, Pt . 1, 449-481 (Reinhold Publ. Corp., New York, N. Y. , 1962).

5072. Theory of the deep penetration of electrons

and charged particles, L. V. Spencer and J. Coyne. Phys. Rev. 128, No. 5, 2230-2237

(Dec. 1, 1962).

5073. Theory of thermal diffusion in dilute alloys, R. E. Howard and J. R. Manning, J. Chem.

Phys. 36, No. 4, 910-916 (Feb. 1962).

5074. Thermal expansion of some engineering materials from 20°K to 293°K, V. Arp , J. H. Wilson,

L. Winrich, and P. Sikora. Cryogenics 3, 230-

236 (June 196 2)

.

5075. Thermal radiation standards and measurements

of the Radiometry Section at the National Bu- reau of Standards, A. G. Maki . (Proc. Conf. Radiative Transfer from Solid Materials, Boston,

Mass., Dec. 12-13, 1960), Book, Radiative

Transfer from Solid Materials, ed. H. H. Blau,

Jr., and H. Fischer, Sec. Ill, p. 135-141 (The Macmillan and Co., New York, N. Y. , 1962). 33

5076. Thermal reactions of isobutyl radicals,

W. M. Jackson, J. R. McNesby, and B.deB. Darwent. J. Chem. Phys. 37, No. 10, 2256-2260

(Nov. 1962).

5077. Thermal explosions: adiabatic self-heating

of explosives and propellants, D. Gross and

A. B. Amster. Eighth Symp. (Intern.) on Com- bustion, p. 728-734 (The Williams and Wilkins

Co., Baltimore, Md . , 1962).

5078. Thermal isomerization of isopropyl-1 , 1 , l-d 3 radicals, W. M. Jackson and J. R. McNesby.

J. Chem. Phys. 36, No. 9, 2272-2275 (May 1, 1962).

5079. Thermocouple materials, F. R. Caldwell. Book

Temperature, Its Measurement and Control in Science and Industry 3, Pt . 2, 81-134 (Reinhold

Publ. Corp., New York, N. Y. , 1962).

5080. Thermodynamic study of the thorium phosphide with a mass spectrometer, J. E. Efimenko and

K. A. Gingerich. Proc. Symp. Thermodynamics of Nuclear materials, Vienna, May 21-25, 1962,

p. 477-486 (International Atomic Energy Agency, Vienna, Austria, Sept. 1962).

5081. Thermoelectric and mechanical stability of platinel II thermocouples in oxidizing atmospheres,

P. D. Freeze and L. O. Olsen. Wright Patterson

Air Force Base Tech. Doc. Rept . No. ASD-TDR-62-

835, p. 1-30 (Nov. 1962).

5082. Thermometric cells for calibration of liquid- in-glass thermometers, D. P. Enagonio, E. G. Pearson, and C. P. Saylor. Book, Temperature, Its Measurement and Control in Science and Industry

3, Pt. 1, 219-230 (Reinhold Publ. Corp., New

York, N. Y. , 1962).

5083. Thermometry, low temperature, R. P. Hudson. Encyclopaedic Dictionary of Physics 7, 323-325

(1962). 5084. Thermophysical properties of zirconium

hydrides, R. L. Beck and T. B. Douglas. Am. Soc. Metals 55, 1075-1076 (1962). 5085. Third international conference on precision electromagnetic measurements, W. D. George, Nature 193, No. 4858, 921-939 (Dec. 1962). 5086. Time and its inverse, J. M. Richardson.

Intern. Sci . and Tech. 1, No. 6, 54-61 (June 1962).

5087. Time ratio tables—A rapid simple method of estimating the order of chemical reactions,

J. H. Flynn. Chem. Eng. 69, No. 17, 137-140

(Aug. 20, 1962).

5088. Time-resolved electron optical image of a pulsed atomic beam in flight, L. Marton and S. R. Mielczarek. J. Appl. Phys. 33, No. 4, 1613-

1614 (Apr. 1962).

5089. Time variations of the enrgy spectrum of solar cosmic rays in relation to the radiation

hazard in space, D. K. Bailey, J. Geophys. Research 67, No. 1, 391-396 (Jan. 1962). 5089A. Timing and space navigation with an existing

ground based system. G. Hefley, R. F. Linfield,

and R. H. Doherty. AGARD Naviation Systems for Aircraft and Space Vehicles, pp. 490-506 (Per- gamon Press Inc., New York, N. Y. , 1962).

5090. Topside soundings of the ionosphere, R. W. Knecht. (Proc.) Intern. Conf. Cosmic Rays and

the Earth Storm), J. Phys. Soc. Japan 17, Suppl

.

A. Pt. 1, 302 (1962).

5091. Traces of products of angular momentum

matrices. I. Cartesian basis, E. Ambler,

J. F. Schooley, and J. Eisenstein. J. Math. Phys.

3, No. 1, 118-130 (Jan. -Feb. 1962).

5092. Traces of products of angular momentum

matrices. II. Spherical basis, E. Ambler, J. Eiaenstein, and J. F. Schooley. J. Hath. Phys. 3, No. 4, 760-771 (July-Aug. 1962).
1962

5093. Transactions Joint Commission for Spectroscopy, report on atomic spectra, C. E. Moore.

J. Opt. Soc. Am. 52, No. 4, 477-478 (Apr. 1962).

5094. Transition probabilities for permitted and forbidden lines of Si X, Fe XIV and Fe X, R. H. Garstang. Extrait des Astrophysique 25, No. 2, 109-117 (Mar. -Apr. 1962).

5095. Translational energy accommodation in the nickel-chlorine surface reaction, J. D. McKinley.

J. Phys. Chem. 66, No. 3, 554-555 (Mar. 1962).

5096. Trucks and trailers, C. W. Phillips. ASHRAE

Guide and Data Book, Chapt. 55, pp. 569-584

(19( 2). 5097. Tungsten helical- spring microbalance , S. L. Madorsky. Book, Vacuum Microbalance Techniques,

ed. R. F. Walker, 2, 47-57 (Plenum Press, Inc., New York, N. Y. , 1962).

5098. Tunnelling between a normal metal and a superconductor, J. L. Harden and R. S. Collier. Cryogenics 2, No. 6, 369-370 (Dec. 1962).

5099. Ultra-high vacuum ultraviolet monochromator

,

L. Marton, J. A. Simpson, J. A. Suddeth, and

L. B. Leder. (1961 Trans. Eighth Natl. Vacuum

Symp.), Book, The Second International Congress,

ed. L. E. Preuss, p. 633-639 (Pergamon Press,

Inc., New York, N. Y. , 1962).

5100. Ultrasounds induce flaking of ceramics from

metals, J. W. Pitts. Metal Progr. 82, No. 2, 114-

115 (Aug. 1962). 5101. Ultraviolet spectrophotometry, M. Tryon and

E. Horowitz. Book, Analytical Chemistry of Polymers, ed.G. M. Kline, Pt . II, Chapt. 7, 269-

289 (Interscience Publ. Inc., New York, N. Y.

,

1962).

5102. Uncertainties in calibration, W. J. Youden.

IRE Trans. Instr. 1-11, Nos. 3 and 4 , 133-138

(Dec. 1962).

5103. Universal-time control of the Arctic and Antarctic F region, R. A. Duncan. J. Geophys.

Res. 67, No. 5, 1823-1830 (May 1962).

5104. Use of a "peek-a-boo" information retrieval

technique for a personal reference file, J. A. Bennett. J. Wash. Acad. Sci. 52, No. 9, 216-219

(Dec. 1962).

5105. Use of gas phase chromatography for rapid determination of carbonate at low levels,

F. G. Carpenter. Anal. Chem. 34, 66 (Jan. 1962).

5106. Utilization of tritium and carbon- 14 in studies of isotope effects, H. S. Isbell, H. L. Frush, and L. T. Sniegoski. Book, Tritium in the Physical and Biological Sciences II, 93-101 (In- ternational Atomic Energy Agency, Vienna, Austria

1962)

.

5107. Vacuum microbalance techniques 2, R. F. Walker. Editor, Book, 179 pages, Proc. Conf .

,

National Bureau of Standards, Apr. 20-21, 1961 (Plenum Press, Inc., New York, N. Y. , 1962).

5108. Vacuum photolysis of solid ethane at 77°K,

M. D. Scheer, J. McNesby, and R. Klein. J. Chem.

Phys. 36, No. 12, 3504-3505 (June 15, 1962).

5109. Vacuum system for use with a microbalance

G. F. Rouse. Book, Vacuum Microbalance Techniques, ed R. F. Walker, 2, 59-69 (Plenum

Press, Inc., New York, N. Y. , 1962).

5110. Vacuum ultraviolet photochemistry. II. Photolysis of ethylene, H. Okabe and J. R. McNesby.

J. Chem. Phys. 36, No. 3, 601-604 (Feb. 1962).

5111. Vacuum ultraviolet photochemistry. V. Photolysis of isobutane, H. Okabe and D. A. Becker.

J. Am. Chem. Soc. 84, No. 21, 4004-4007 (Nov. 1962)

.

5112. Vacuum ultraviolet photochemistry. III. Primary processes in the vacuum ultraviolet photolysis of water and ammonia, J. R. McNesby,

I. Tanaka, and H. Okabe. J. Chem. Phys. 36, No.

3, 605-607 (Feb. 1962). 5113. Vapor phase growth kinetics of Hg and K whiskers by field emission, R. L. Parker and

S. C. Hardy. J. Chem. Phys. 37, No. 8, 1606- 1609 (Oct. 1962).

5114. Vapor-phase radiolysis of propane-ds in the presence of other hydrocarbons, S. G. Lias and P. Ausloos. J. Chem. Phys. 37, No. 4, 877-883 (Aug. 1962).

5115. Vapour pressure, G. T. Armstrong. Encyclo- paedic Dictionary of Physics 7, 586-587 (Per- gamon Press Inc., New York, N. Y. , 1962).

5116. Variability of spectral tristimulus values,

I. Nimeroff, J. R. Rosenblatt, and M. C. Dan- nemiller. J. Opt. Soc. Am. 52, No. 6, 685-691

(June 196 2). 5117. Variance of radio frequency caused by at- mospheric turbulence in line-of-sight transmissions, K. A. Norton, E. C. Barrows, M. C. Thompr- son, Jr., and H. B. Janes. IRE Trans. Instr. 1-11, Nos. 3 and 4, 153-155 (Dec. 1962).

5118. Variations in frequency of occurrence of sporadic E, 1949-1959, W. B. Chadwick. Book, Ionospheric Sporadic E, Ed. E. K. Smith and

S. Matsushita, p. 182-193 (Pergamon Press, Inc., New York, N. Y. , 1962)

.

5119. Very- low- frequency phase observations of the ionospheric effects of the solar flare of Sep- tember 28, 1961, A. G. Jean and J. H. Crary.

J. Geophys. Res. 67, No. 12, 4903-4905 (Nov. 1962)

.

5120. Very low frequency propagation in the earth- ionosphere waveguide of non-uniform width, J. R. Wait. Proc. Intern. Conf. Ionosphere, London,

1962, p. 446-451 (The Institute of Physics and

The Physical Society, London, England, 1962).

5121. Very low frequency propagation—theory and

experiment, J. R. Wait. Monograph, Electromagnetic

Waves in Stratified Media, Chapt. IX, 264-288

(Pergamon Press Inc., Oxford, England, 1962).

5122. Vibration-rotation interactions in cyanamide;

the question of planarity of amides, D. R. Lide,

Jr. J. Mol. Spectry. 8, No. 2, 142-152 (Feb. 1962).

5123. Vibration-rotation spectra of BrCN, A. G. Maki and T. Gott. J. ChenJ. Phys. 35, No. 9, 2282-2285 (1962). 5124. Vibrational-rotational spectroscopy, H. C. Allen, Jr., and W. B. Olson. Ann. Rev. Phys. Chem. 13, No. 2, 221-240 (July 1962).

5125. Visual observations of high pressure transitions, A. Van Valkenburg. Rev. Sci. Instr. Letter

33, No. 12, 1462 (Dec. 1962).

5126. Wavelengths, energy levels and pressure

shifts in mercury 198, V. Kaufman. J. Opt. Soc.

Am. 52, No. 8, 866-870 (Aug. 1962). 5126A. Wave functions for anharmonic oscillators

by perturbation methods, A. M. Shorb, R. Schroeder,

and E. R. Lippincott . J. Chem. Phys. 37, 1043

(Sept. 1, 1962).

5127. Wave propagation around a curved boundary which contains an obstacle, J. R. Wait, Can.

J. Phys. 40, 1010-1016 (Aug. 1962).

5128. X-ray diffraction, A. S. Posner. Book, Analytical Chemistry of Polymers, ed. G. M. Kline, Pt . II, Chapt. 2, 79-108 (Interscience

Publ. Inc., New York, N. Y. , 1962). 336
1963

5129. A colorimetric method for measuring polyester degradation due to weathering, V. E. Gray

and J. R . Wright. J. Appl. Polymer Sci. 7, 2161-2174 (Nov. -Dec. 1963).

5130. A comparison of the low temperature adsorption of nitrogen and methane from hydrogen gas on three different adsorbents, M. J. Hiza and

A. J. Kidnay. Ad van. Cryog. Eng. 8, Paper C-7, 174-182 (1963).

5131. A comparison of two independent atomic time

scales, J. Newman, B. Atkinson, and L. Fey. Proc. IEEE 51, No. 3, 498-499 (Mar. 1963).

5132. A computer for the Abel inversion, C. R. Yokley and J. B. Shumaker. Rev. Sci. Instr. 34,

No. 5, 551-557 (May 1963).

5133. A field emission study of carbon monoxide on

tantalum, R. Klein and L. Leder. J. Chem. Phys.

38, No. 8, 1866-1872 (Apr. 1963).

5134. A He 3 cryostat for performing experiments

with oriented nuclei, E. Ambler, R. B. Dove, and

R. S. Kaeser. (Proc. 1962 Cryogenic Engineering

Conf ) , Book, Advances in Cryogenic Engineering

8, Paper H-2, 443-445 (Plenum Press Inc., New

York, N. Y. , 1963).

5135. A high-latitude investigation of the natural very-low-frequency electromagnetic radiation

known as chorus, J. H. Pope. J. Geophys. Res.

68, No. 1, 83-99 (Jan. 1963).

5136. A low pressure arc source for the emission

spectrum of the FeO molecule, R. K. Dhumwad and

A. M. Bass. Appl. Opt. 2, No. 12, 1335 (Dec. 1963)

.

5137. A magnetic amplifier for use with diode

logic, E. W. Hogue. IEEE Intern. Conf. Nonlinear Magnetics, No. T-149, p. 8.6-1-8.6-6 (Apr. 1963)

.

5138. A mathematical analysis of self ignition,

W. Squire. Combust. Flame 7, No. 1, 1-8 (Mar. 1963)

.

5139. A mechanism for the production of certain

types of VLF emissions, S. F. Hansen. J. Geophys. Res. 68, No. 21, 592 5-593 5 (Nov. 1, 1963)

.

5140. A method for determining the height and geo- graphical position of an auroral arc from one observing station, M. H. Rees. J. Geophys. Res.

68, No. 1, 175-183 (Jan. 1, 1963).

5141. A method for localized variation of the paths of two paraxial rays, L. E. Sutton. Appl.

Opt. 2, No. 12, 1275-1280 (Dec. 1963).

5142. A method for measuring the instability of resistance strain gages at elevated temperatures, R. L. Bloss and J. T. Tiumbo. ISA Trans. 2, No. 2, 112-116 (Apr. 1963).

5143. A miniature helium turbo-expander for cryogenic refrigeration systems, M. T. Norton.

(Proc. XI Intern. Congress Refrigeration,

Munich, Germany, Aug. 1963), Prog. Refrig. Sci. Technol. 1, 131-135 (1963).

5144. A model of the atmosphere and ionosphere in the E and Fl regions, R. B. Norton, T. E. VanZandt, and J. S. Denison. Proc. Intern. Conf. Ionosphere July 1962, p. 26-34 (Institute of Physics and the Physical Society, London, England, 1963).

5145. A modification of the Born-Mayer potential

function as applied to the crystalline alkali

halides, T. B. Douglas. J. Chem. Phys. 38, No.

10, 2461-2466 (May 15, 1963).

5146. A new absolute null method for the measurement of magnetic susceptibilities in weak low- frequency fields, C. T. Zahn. Rev. Sci. Instr.

34, No. 3, 285-291 (Mar. 1963).

5147. A new high voltage calibration facility at the National Bureau of Standards, W. W. Scott. Boulder, ISA 1963 Proc. Paper No. 7.2.63 (1963).

5148. A new standard of spectral irradiance, R. Stair, W. E. Schneider, and J. K. Jackson. Appl.

Opt. 2, No. 11, 1151-1154 (Nov. 1963).

5149. A nomograph for predicting the performance of tropospheric scatter communication circuits, H.

T. Dougherty. IEE Trans. Commun. Systems CS-11,

No. 1, 138-142 (Mar. 1963).

5150. A note on contingency tables involving zero frequencies and the 21 test, H. H. Ku. Technometrics 5, No. 3, 398-400 (Aug. 1963).

5151. A note on diurnal phase changes of very-lowfrequency waves for long paths, J. R. Wait. J. Geophys. Res. 68, No. 1, 338-340 (Jan. 1, 1963).

5152. A note on domain conversions of BaTi03 , P. H. Fang and W. S. Brower, Jr. J. Appl. Phys. 34,

No. 5, 1516 (May 1963)

.

5153. A note on E-field and H-field losses for ground-based antennas, J. R. Wait. Proc. IEEE

51, No. 2, 366 (Feb. 1963).

5154. A note on modular groups, M. Newman and J.

R. Smart. Proc. Am. Math. Soc. 14, No. 1, 124-125

(Feb. 1963).

5155. A 100 megapulse per second binary counter with impedance steering, S. B. Geller and P. A. Mantek. IEEE Trans. Electron. Computers EC-12,

No. 5, 568 (Oct. 1963).

5156. A plasma instability resulting in field- aligned irregularities in the ionosphere, D. T. Farley, Jr. J. Geophys. Res. 68, No. 22, 6083-

6097 (Nov. 15, 1963).

5157. A portable impedance tube, R. D. Berendt and

H. A. Schmidt, Jr. J. Acoust. Soc. Am. 35, Nc

.

7, 1049-1052 (July 1963).

5158. A question regarding atmospheres with a tem- perature inversion, R. N. Thomas. J. Quant.

Spectry. Radiative Transfer 3, 133-135 (Apr. -June

1963)

.

5159. A radio-meteorological study, B. R. Bean, E.

J. Dutton, V. R. Frank, J. A. Lane, and W. B. Sweezy. Program and ,Digest 1963 IEEE Prof . Group.

Ant. and Prop. Symp. Space Telecommunications,

July 9-11, 1963, Boulder, Colo., p. 56-60 (1963).

5160. A redetermination of some optical properties

of calcium fluoride, I. H. Malitson. Appl. Opt.

2, No. 11, 1103-1107 (Nov. 1963).

5161. A refrigeration system incorporating a low- capacity, high-speed, gas-bearing-supported ex- pansion turbine, D. B. Mann, H. Sixsmith, W. A. Wilson, and B. W. Birmingham. Book, Adv. Cryogenic Eng. 8, Paper D-5, 221-227 (1963).

5162. A rocket experiment involving radio reflections from the topside of the ionosphere, R. W. Knecht, T. E. VanZandt, and J. M. Watts. Proc. 3d Intern. Symp. Rockets and Astronautics, Tokyo,

Japan, 1961, No. 48, p. 377-380 (1963). 5163. A scheme for obtaining integral and fractional multiples of a given radiance, D. Erminy. J. Opt. Soc. Am. Letter to Editor 53, 1448-1449

(Dec. 1963).

5164. A simple environmental chamber for rotating

beam fatigue testing machines, J. A. Bennett.

Mater. Res. Std. 3, No. 6, 480-482 (June 1963).

5165. A study of anthracene fluorescence excited

by the ruby giant pulse laser, J. L. Hall, D. A. Jennings, and R. M. McClintock. Phys. Rev. Letters 11, No. 8, 364-366 (Oct. 15, 1963).

5166. A study of embrittlement of high strength

steels by hydrogen isotopes. I. Testing of steel rings as specimens, a comparison of hydrogen and deuterium embrittlement, and permeation studies. 337
1963

II. A comparison of gas contents and hydrogen or deuterium embrittlement resulting from electro- plating processes, G. B. Wood. J. Electrochem.

Soc. 110, No. 8, 867-885 (Aug. 1963).

5167. A study of stress relaxation with finite

strain, E. A. Kearsley, B. Bernstein, and L. J. Zapas. Trans. Soc. Rheology VII, 391-410 (1963).

5168. A suggestion for improving forecasts of geo- magnetic storms, Y. Hakura and J. V. Lincoln. J. Geophys. Res. 68, No. 5, 1563-1564 (Mar. 1, 1963)

.

5169. A survey of some mathematical models in the theory of reliability , G . H. Weiss. Book, Statistical Theory of Reliability, Ed. M. Zelen, p. 3-54 (University of Wisconsin Press, Madison, Wise, 1963).

5170. A theoretical study of the Martian ionosphere, R. B. Norton. Book, Advances in the Astronautical Sciences and the Exploration of Mars 15, 533-542 (Western Periodicals, Calif.,

1963)

.

5171. A theory of energy transfer in the photosynthetic unit, Z. Bay and R. M. Pearlstein.

Proc. Natl. Acad. Sci. 50, No. 6, 1071-1078

(Dec. 1963).

5172. A theory of incoherent scattering of radiowaves by a plasma. 3. Scattering in a partly ion- ized gas, J. P. Dougherty and D. T. Farley, Jr.

J. Geophys. Res. 68, No. 19, 5473-5486 (Oct. 1, 1963).

5173. Absolute scale of oscillator strengths, C. W. Allen and C. H. Corliss. Monthly Notices Roy. Astron. Soc. 126, No. 1. 37-40 (1963).

5174. Absolute calibration of the National Bureau

of Standards photoneutron source: III. Absorption

in a heavy water solution of manp-anous sulfate,

R. H. Noyce, E. R. Mosburgh, Jr., S. B. Garfinkel,

and R. S. Caswell. J. Nucl. Eng. I 7

, No. 7, 313-

319 (1963).

5175. Absolute scale of oscillator strengths, C. W. Allen and C. H. Corliss. Mo. Notices Royal

Astron. Soc. 126, No. 1, 37-40 (1963).

5176. Accumulation of calibration errors and their optimum distribution, E. L. Crow. Trans. Am. Soc. Quality Control 18th Midwest Conf., Tulsa, Okla.

,

p. 86-100 (Oct. 1963).

5177. Achievement of measurement agreement among

electrical standards laboratories, F. D. Weaver.

Instr. Control Systems 36, 128-131 (July 1963).

5178. Acoustic properties of liquids, M. Greenspan. American Institute of Physics Handb. 2d edition, Paper 3e, p. 3-71-3-82 (1963).

5179. Acoustics Section, R. K. Cook. Editor, American Institute of Physics Handb. 2d edition, Sec- tion 3, p. 3-1-3-157 (1963).

5180. Air dielectric coaxial cables as cryogenic

transfer lines, D. B. Mann. Cryogenics 3, 108-109

(1963).

5181. Airglow research, F. E. Roach. Trans. Am. Geophys. Union 44, No. 2, 431-432 (June 1963). 5182. Aldonic acids. By electrolytic oxidation of aldoses; calcium D-gluconate dihydrate, H. L. Frush and H. S. Isbell. Book, Methods in Carbo- hydrate Chemistry 2, 14 (Academic Press Inc., New York, N. Y. , 1963).

5183. Aldonic acids. By oxidation of aldoses with

bromine; lead D-xylonate, H. S. Isbell. Book, Methods in Carbohydrate Chemistry 2, 13 (Academic Press Inc., New York, N. Y. , 1963).

5184. Aldonic acids. From aldoses by hypoiodite

oxidation: calcium 2 , 3-0-isopropylidene-D-lyxonate

dihydrate, R. Schaffer and H. S. Isbell. Book,

Methods in Carbohydrate Chemistry 2, 11 (Academic Press Inc., New York, N. Y. , 1963).

5185. Alteration of the Muscovite absorption spec- trum by KBr pellet preparation, S. Ruthberg, M.

W. Barnes, and R. H. Noyce. Appl . Opt. 2, No. 2, 177 (Feb. 1963).

5186. An air core primary radio frequency permeameter for reversible permeability measurements, C. A. Hoer and R. D. Harrington. Proc. IEEE 51, No.

12, 1795-1796 (Dec. 1963).

5187. An alignment interferometer, J. B. Saunders.

Appl. Opt. 2, No. 5, 541 (May 1963).

5188. An all-integer programming algorithm with parabolic constraints, C. Witzgall. J. Soc. Ind. Appl. Math. 11, No. 4, 855-871 (1963).

5189. An analysis of pressure and stress distribution under rigid Bridgman-type anvils, J. W. Jackson and M. Waxman. Book, High-Pressure Measurement, ed. A. A. Giardini and E. C. Lloyd, p. 39-58 (Butterworth Inc., Wash. D. C. , 1963).

5190. An apparatus to determine the solid-vapor equilibria of binary cryogenic systems, M. J. Hiza and R. N. Herring. Advan. Cryog. Eng. 8, Paper C-5, 158-161 (1963).

5191. An approach to the classification of electro- magnetic surface waves, J. R. Wait. Book, Radio

Waves and Circuits by S. Silver, Pt. 1, p. 86-95

(Elsevier Publ. Co., Princeton, N. J., 1963).

5192. An approach to thermal emittance standards,

J. C. Richmond, W. N. Harrison, and F. J. Shorten. (Symp. Measurement of Thermal Radiation Properties of Solids, Dayton, Ohio, Sept. 5-7, 1963),

Natl. Aeron. and Space Admin. SP-31 , Session IV, Paper 41, p. 403-424 (Dec. 1963).

5193. An experimental method of estimating F-region

collision frequencies, J. K. Hargreaves . J. At- mospheric and Terrest. Phys. Research Note 25, 300-304 (May 1963)

.

5194. An operational information retrieval system

in the field of cryogenics, N. A. Olien. (Proc. 26th Annual American Documentation Institute

Meeting, Oct. 1963), Book, Automation and Scientific Communication, p. 157-158 (Am. Documentation Inst., 1963).

5195. An unmodulated twin channel microwave attenu- ation measurement system, D. H. Russell. ISA Preprint, p. 37.3.63-1—37.3.63-17 (Sept. 1963).

5196. Analysis of rotation errors of a waveguide

rotary-vane attenuator, W. Larson. IEEE Trans.

Instr. Meas. IM-12, No. 2, 50-55 (Sept. 1963).

5197. Analysis of rubber and rubber products, W. P. Tyler and M.' Tryon. Book, Standard Methods of Chemical Analysis, Vol. IIB, Industrial and Natural Products and Noninstrumental Methods, 6th edition, F. J. Welcher, Chapt. 43, p. 2146-2226

(D. Van Nostrand Co., New York, N. Y., 1963).

5198. Analysis of the third spectrum of praseodymium, J. Sugar. J. Opt. Soc. Am. 53, No. 7, 831-

839 (July 1963).

5199. Analytical chemistry—a challenging profession, J. K. Taylor. J. Assoc. Offic. Agric. Chem.

46, 63-67 (Feb. 1963).

5200. Annual "Observatory Report" on research at JILA, L. M. Branscomb. Astron. J. 68, No. 9, 660-662 (Nov. 1963).

5201. Annual "Observatory Report" on research at the National Bureau of Standards (Spectroscopy),

C. E. Moore and L. M. Branscomb. Astron. J. 68, No. 9, 657-659 (Nov. 1963).

5202. APPA TAPPI reference material program, II. Ef- fectiveness of a reference material in reducing

the between-laboratory variability of Tappi stand- 338
1963 ard T414 m-49, internal tearing resistance of paper, T. W. Lashof. Tappi 46, No. 3, 145-150

(Mar. 1963).

5203. Applications of a semiconductor surface-state

charge-storage device, L. J. Swartzendruber

.

Book, Solid State Electronics 6, 59-61 (Pergamon

Press Inc., New York, N. Y. , 1963).

5204. Artificial heating of the electrons in the F region of the ionosphere, D. T. Farley, Jr. J. Geophys. Res. 68, No. 2, 401-413 (Jan. 1963).

5205. Aspects of radio meteorology, J. D. Horn.

Proc. Mountain States Navy Research and Development Clinic, Raton, N. M. , Sept. 28-29, 1961, p. C51-C56 (Raton, Communications and Electronics

Foundation, 1963).

5206. Atomic flame reactions involving N atoms, H atoms and ozone, D. Garvin and H. P. Broida. 9th

Symp. (Intern.) Combustion, p. 678-688 (1963).

5207. Atomic scattering factors for the lithium and beryllium isoelectronic sequences from accurate analytic Hartree-Fock wave functions, C. M. Womack, Jr.. and J. N. Silverman. Z. Kryst. 118,

No. 5-6, 422-433 (Sept. 1963).

5208. Audiofrequency dispersion effects in lanthanide salts at low temperatures, R. P. Hudson and

B. W. Mangum. Book, Magnetic and Electric Resonance and Relaxation, Ed. J. Smidt , p. 135-146

(North-Holland Publ. Co., Amsterdam, The Netherlands, 1963).

5209. Auroral-zone observations of infrasonic pressure waves related to ionospheric disturbances

and geomagnetic activity, W. H. Campbell and J.

M. Young. J. Geophys. Res. 68, No. 21, 5909-5916

(Nov. 1963).

5210. Autoionization in helium using a synchrotron

light source, R. P. Madden and K. Codling. Proc. Vlth Intern. Conf. Ionization Phenomena in Gases,

Paris, France, 1963, 1, 139-143 (1963).

5211. Beam loading and beam blowup in electron

linacs, J. E. Leiss. Proc. Conf. Proton Linear

Accelerators, Yale Univ., New Haven, Conn., p. 74-95 (Oct. 1963).

5212. Behavior of filamentous materials subjected

to high speed tensile impact, J. C. Smith, C. A. Fenstermaker , anc P. J. Shouse. ASTM Spec. Tech.

Publ. No. 336, p. 47-69 (Oct. 1963).

5213. Binary mixtures of dilute bose gases with re- pulsive interactions at low temperature, D. M. Larsen. Ann. Phys . 24, 89-101 (1963).

5214. Bolometric microwave power calibration techniques at the National Bureau of Standards, R. F. Desch and R. E. Larson. IEEE Trans. Instr. Meas

.

IM-12, No. 1, 29-33 (June 1963).

5215. Bounds for cofactors and arithmetic minima of quadratic forms, M. Newman. J. London Math. Soc.

38, 215-217 (Apr. 1963).

5216. Broadening of the i> 3 lines of HCN due to argon, carbon dioxide, and hydrogen chloride, R.

J. Thibault, A. G. Maki , and E. K. Plyler. J. Opt. Soc. Am. 53, No. 11, 1255-1258 (Nov. 1963).

5217. Building a simple transistor tester, G. F. Montgomery. Electronics 36, No. 16, 56 (Apr. 19, 1963)

.

5218. Calculation of crystalline size distributions

from X-ray line broadening, A. Bienenstock. J. Appl. Phys. 34, No. 5, 1391 (May 1963).

5219. Calculations of energy spectra of nuclei in the 2s, Id shell, M. K. Banerjee, C. A. Levinson,

and S. Meshkov. Phys. Rev. 130, No. 3, 1064-1068

(May 1, 1963)

.

5220. Calculations of the hyperfine splitting for

the lithium atom, J. B. Martin and A. W. Weiss. J.

Chem. Phys. Letter 39, No. 6, 1618-1620 (Sept. 15

1963)

.

5221. Calculations of the potential and effective diffusion constant in a polyelectroly te solution,

S. R. Coriell and J. L. Jackson. J. Chem. Phys.

39, 2418-(1963).

5222. Calendar record for the International Geo- physical cooperation 1959, A. H. Shapley and J. V. Lincoln. Ann. IGY XVI, Pt . Ill, 192 (Pergamon

Press Inc., New York, N. Y. , 1963).

5223. Calibration of photogrammetric lenses and cameras at the National Bureau of Standards, F.

E. Washer. Photogrammetric Eng. XXIX, No. 1, 113-

119 (Jan. 1963). 5224. Calorimetric determination of half-cell en- tropy changes, J. M. Sherfey. J. Electrochem.

Soc. 110, No. 3, 213-221 (Mar. 1963). 5225. Calorimetry of portland cement. II. Application of various heat-of-solution procedures to determinations of the heat of hydration, E. S. Newman and H. A. Berman. Am. Soc. Testing Mater.

Proc. 63, 852-860 (1963). 5226. Calorimetry of portland cement: I. Effect of various procedures on the determination of heat

of solution, H. A. Berman and E. S. Newman. ASTM

Proc. 830-851 (1963). 5227. Cane sugar refining. II. Decolorization with

adsorbents, V. R. Deitz and F. G. Carpenter. Cane

Sugar Handb. ed. G. P. Meade, 9th edition, p. 342-385 (John Wiley and Sons Inc., New York, N. Y., Aug. 1963). 5228. Changes in occlusion of complete dentures

caused by a pipe habit: a case report, J. B. Woelfel and G. C. Paf f enbarger . J. Am. Dental

Assoc. 66, No. 4, 478-485 (Apr. 1963).

5229. Characteristics of programs for KWIC and other computer-produced indexes, W. W. Youden.

(Proc. 26th Annual American Documentation Institute Meeting, Oct. 1963), Book, Automation and Scientific Communication, p. 331-332 (Am. Docu- mentation Inst. , 1963)

.

5230. Characteristics of spread F at high geomagnetic latitude, W. K. Klemperer. J. Geophys. Res.

68, No. 10, 3191-3196 (May 15, 1963).

5231. Chemical and magnetic enhancement of per- turbed lines in the violet spectrum of CN, H. E. Radford and H. P. Broida. J. Chem. Phys. 38, No.

3, 644-657 (Feb. 1963).

5232. Choking two-phase flow of hydrogen: some idealized solutions, R. V. Smith. Proc. Nuclear Propulsion Conf., Atomic Energy Commission, p. 115-125 (AEC, Oak Ridge, Tenn., July 1963).

5233. Classification and properties of inorganic

compounds, H. P. R. Frederikse. American Institute of Physics Handb. 2d edition, Sect. 9b, p. 9-21-9-31 (1963). 5234. Classification of resonances in the electron scattering cross section of Ne and He, J. Simpeon and U. Fano. Phys. Rev. Letters 11, No. 4, 158-159 (Aug. 1963).

5235. Classification of two-electron excitation

levels of helium, J. W. Cooper, U. Fano, and F. Prats. Phys. Rev. Letters 10, No. 12, 518-521

(June 1963)

.

5236. Cluster formulation of the exact equation

for the evaluation of a classical many-body system, J. Weinstock. Phys. Rev. 132, No. 1, 454-469

(Oct. 1, 1963).

5237. Coatings formed on steel by cathodic protection and their evaluation by polarization measurements, W. J. Schwerdtfeger and R. J. Manuele. Corrosion 19 No. 2, 59t-68t (Feb. 1963). 339
1963

5238. Coefficient of thermal expansion and Young's modulus for a one-demensional model of a solid,

J. Mazur and R. J. Rubin. Am. J. Phys. 34, No.

11, 835-836 (Nov. 1963).

5239. Colorimetric method for measuring polyester

degradation due to weathering, V. E. Gray and

J. R. Wright. J. Appl. Polymer Sci. 7, 2161-2174

(1963) . 5240. Comment on empirical inference of Doppler

widths, R. N. Thomas. Astrophys. J. 137, No. 1, 38-40 (Jan. 1963).

5241. Comment on "parametric behavior of an ideal two-frequency varactor", G. F. Montgomery. Proc.

IEEE 51, No. 3, 491 (Mar. 1963).

• 5242. Comment on "the mode theory of VLF radio propagation for a spherical earth and a concentric anisotropic ionosphere, J. R. Wait. Can. J. Phys. Note 41, 819 (May 1963).

5243. Comments on "Application of experimental de- sign to the study of a test method", R. T. Thaxter, P. D. Hubbe, and J. Mandel. Tappi 46, No.

12, 193A-194A (Dec. 1963).

•5244. Comments on the paper "Obstacle gain and shadow loss", by G. H. Crenier, J. R. Wait. To

the Editor of Microwave J. 6, No. 7, 83 (July 1963)

.

- 5245. Comments on the Rosen interaction potential

of two helium atoms, B. M. Axilrod. J. Chem.

Phys. 38, No. 1, 275-277 (Jan. 1963).

-5246. Comments on three papers on fire tests, J.

V. Ryan. (Am. Soc. Testing Materials Fire Test

Symp., Oct. 1, 1962), Am. Soc. Testing Mater.

Spec. Tech. Publ. 344, 52 (Oct. 1963).

-5247. Comments on Zener diodes as voltage standards, W. G. Eicke, Jr. Comite Consultatif d'Electricite 106 Session, May 2-3, 1963, pp. 27-30 (Gauthier-Villars, Paris, France, 1963).

5248. Comparison calibration of inductive voltage

dividers, R. V. Lisle and T. L. Zapf. ISA 1963

Proc. Paper No. 7.1.63 (1963).

• 5249. Comparison of the 3-out-of-7 ARQ with Bose- Chaudhuri-Hocquenghem coding systems, M. Nesenbergs. IEEE Trans. Commun. Systems CS-11, No. 2, 202-212 (June 1963)

.

5250. Comparison of observed atmospheric radio re- fraction effects with values predicted through

the use of surface weather observations, B. R. Bean and G. D. Thayer. (AIAA Space Flight Testing

Conf., Cocoa Beach, Fla.), Am. Inst. Aeronautics

and Astronautics (Mar. 1963).

5251. Comparison of the 3-out-of-7 ARQ with Bose- Chaudhuri-Hocquenghem coding systems, M. Nesenbergs. IEEE Trans. Commun. Systems CS-11, No. 2, 202-212 (June 1963)

.

5252. Complex formation between manganese (II)

,

nickel (II), and zinc (II) ions and some symmetrically substituted ethylenediamines : the use of E and 8H. values in assessing inductive and steric

effects, D. L. Leussing. Inorganic Chem. 2, No.

77, 77-82 (1963).

5253. Complicating factors in the gas phase photolysis of azomethane, R. E. Rebbert and P. J. Ausloos. J. Phys. Chem. 67, No. 9, 1925-1928

(Sept. 1963).

• 5254. Computed transmission spectra for 2.7 micron

H 2 0 band, D. M. Gates, R. F. Calfee, and D. W. Hansen. Appl. Opt. 2, No. 11, 1117-1122 (Nov. 1963).

5255. Computer transmission spectra for 2.7/j, H 2 0

bands, D. M. Gates, R. F. Calfee, and D. W. Hansen. Appl. Opt. 2, No. 11, 1117-1122 (Nov. 1963).

5256. Concentration-dependent diffusion coefficient

of water in glass, W. Haller. Phys. Chem. Glasses

4, No. 6, 217-220 (Dec. 1963).

5256A. Condensate collection as a measuring tech- nique for studying the cooling capacity of air- conditioning units, P. R. Achenbach and J. C. Davis. (Proc. XI Intern. Congress of Refrigeration, Munich, Germany, 1963), Book, Progress in Refrigeration Science and Technology II, 1281- 1286 (Pergamon Press Inc., New York, N. Y.

,

1963)

.

-5257. Confidence limits for the reliability of com- plex systems, J. R. Rosenblatt. Book, Statistical

Theory of Reliability, p. 115-148 (University of Wisconsin Press, Madison, Wise, 1963).

5258. Connection between shielding and stability in

a collisionless plasma, F. Engelmann, M. Feix, and E. Minardi. II Nuovo Cimento, Serie X, 30, 830-836 (Nov. 1963).

5259. Construction and behavior of a transportable

ten picofarad capacitor, R. D. Cutkosky and L. H. Lee. Comite Consultatif d'Electricite 10 Session, May 2-3, 1963, pp. 44-48 (Gauthier-Villars,

Paris, France, 1963).

5260. Contribution to chapter on Thermal Insulation

in book, F. J. Powell. ASHRA Guide and Data Book, Chapt. 22, p. 367-371 (1963).

5261. Convection phenomena from plants in still

air, D. M. Gates and C. M. Benedict. Am. J. Botony 50, 563-573 (July 1963).

5261A. Cool-down and warm-up of large powder-insulated dewars, F. Kreith J. W. Dean, and L. Brooks. Adv. Cryog. Eng. 8, Paper J-7, 536-543

(1963)

.

5262. Copositive and completely positive quadratic

forms, M. Hall, Jr., and M. Newman. Proc. Cam- bridge Phil. Soc. 59, 329-339 (Apr. 1963).

5263. Corrections to the National Bureau of Standards list of IGY flares, C. S. Warwick. IGY Solar Activity Rept. 17 (1963). 5264. Correlation effects in two- and three-electron systems, J. W. Cooper and J. B. Martin.

Phys. Rev. 131, No. 3, 1183-1186 (Aug. 1, 1963).

5265. Correlation matrix for radio waves in the troposphere, E. C. Barrows. (Proc. Symp. Electro- magnetic Theory and Antennas, Copenhagen, 1963), Monograph, Electromagnetic Theory and Antennas 2, Sec. C, 743-746 (Macmillan and Co., Ltd., London, England, 1963).

5266. Correlation of factors influencing the pressures generated in multianvil devices, J. C. Houck and U. 0. Hutton. Book, High-Pressure

Measurement, ed. A. A. Giardini and E. C. Lloyd,

p. 221-245 (Butterworth Inc., Wash. D. C. , 1963).

5267. Correlation of the phase of microwave signals

on the same line-of-sight path at different fre- quencies, H. B. Janes. IEEE Trans. Ant. Prop. AP-11, No. 6, 716-717 (Nov. 1963).

5268. Corrosion rates of ferrous alloys (Fe, Cr, and Fe-Cr-Si) measured by polarization techniques, W. J. Schwerdtfeger . Corrosion 19, No. 1, 17t-25t (Jan. 1963).

5269. Corrosion resistance, G. A. Ellinger. Welding

Handb. 5th Edition, Chapt. 6, 6.1-6.72 (American Welding Society, New York, N. Y. , 1963).

5270. Coulomb scattering without atomic excitation

for 50-, 100-, 200-, and 400-keV electrons, J. W. Motz, R. C. Placious, and C. E. Dick. Phys. Rev.

132, No. 6, 2258-2561 (Dec. 15, 1963).

340
1963

5271. Crystallographic changes with the substitution of aluminum for iron in dicalcium ferrite,

D. K. Smith. Acta Cryst. 15, 1146-1152 (Jan. 1963)

.

5272. Current development in an electronically

scanned antenna, H. V. Cottony. Proc. Symp. Electromagnetic Theory and Antennas, Copenhagen, June

25-30, 1962, p. 1289-1294 (Pergamon Press, London, England, 1963).

5273. Curves for ground wave propagation over mixed

land and sea paths, J. R. Wait and L. C. Walters.

IEEE Trans. Ant. Prop. AP-11, No. 1, 38-4 5 (Jan. 1963)

.

•5274. Cyclotron resonances in slightly ionized

gases, F. Fehsenfeld. J. Chem. Phys . 39, No. 7, 1653-1661 (Oct. 1, 1963).

5275. Delay time of polar-cap blackout and its re- lation to delay time of geomagnetic disturbance,

C. S. Warwick. J. Geophys. Res. 68, No. 5, 1561-

1562 (Mar. 1963).

5276. Delocalized versus localized pictures in resonance energy transfer, Z. Bay. Proc. Natl. Acad. Sci. 50, No. 5, 962-967 (Nov. 1963).

•5277. Dependence of power output of a gas laser on

the length and rate of excitation of the discharge, J. A. White. Appl. Phys. Letters 3, No.

7, 107-109 (Oct. 1, 1963).

5278. Dependence of the electrical conductivity and thermoelectric power of pure and aluminum—doped

rutile on equilibrium oxygen pressure and temperature, J. Yahia. Phys. Rev. 130, No. 5, 1711-

1719 (June 1, 1963).

•5279. Derivation of electron density profiles in the lower ionosphere using radio absorption

measurements at multiple frequencies, R. Parthasarathy , G. M. Lerfald, and C. G. Little.

J. Geophys. Res. 68, No. 12, 3581-3586 (June 15, 1963).

•5280. Design of low voltage electron guns, J. A. Simpson and C. E. Kuyatt. Rev. Sci. Instr. 34, No. 3, 265-268 (Mar. 1963).

5281. Detection of high altitude nuclear detonations using the VLF phase shift technique, A. G. Jean and D. C. Crombie. IEEE Trans. Nuclear Sci. NS-10, 242-253 (Jan. 1963).

5282. Determination of bitumen content in expansion

joint fillers, E. Horowitz and J. Mandel. Mater.

Res. Std. 3, No. 9, 723-725 (Sept. 1963). 5283. Determination of differential X-ray photon

flux and total beam energy, H. W. Koch and J. S. Pruitt. Book, Nuclear physics, ed. L. C. Yugan

and C. Wu, 5, Chapt. 2.8.2, 508-553 (1963).

5284. Determination of electronic energy levels of molecules by low-energy electron-impact spectroscopy, J. A. Simpson and S. R. Mielczarek. J. Chem. Phys. 39, No. 6, 1606-1607 (Sept. 1963).

•5285. Determination of optical thickness gradients

from a far distance, J. R. Meyer-Arendt, R. B. Herrick, and C. B. Emmanuel. J. Opt. Soc. Am. 53, 1344 (1963)

.

5286. Determination of propylene in ethylenepropylene copolymers in infrared spectroscopy,

J. E. Brown, M. Tryon, and J. Mandel. Anal. Chem.

35, No. 13, 2172-2176 (Dec. 1963).

5287. Determination of rhodium in rhodium-uranium

alloys by precipitation with hydrogen sulfide,

E. J. Maienthal. Anal. Chem. 35, 1094-1095 (July 1963)

.

5288. Determining fastest routes using fixed schedules, B. Levin and S. Hedetniemi. Proc. Conf. American Federation for Information Processing

Soc. 23, 1-9 (1963).

5289. Deuterium isotope effect on glass transformation temperatures of aqueous inorganic solutions,

L. C. Shepley and A. B. Bestul. J. Chem. Phys.

39, No. 3, 680-687 (Aug. 1, 1963).

5290. D-gluco-L-glycero-3-octulose, a crystalline

ketose from D-erythrose, R. Schaffer and A. Cohen. J. Organ. Chem. 28, 1929-1930 (1963). 5291. Dielectric constants of Cr 2 03 crystals, W. S. Brower and P. H. Fang. Phys. Rev. 129, No. 4, 1561 (Feb. 1963).

•5292. Dielectric friction on a moving ion, R. Zwanzig. J. Chem. Phys. 38, No. 7, 1603-1605

(Apr. 1963).

5293. Dielectric friction on a rotating dipole, R. Zwanzig. J. Chem. Phys. 38, No. 7, 1605-1606

(Apr. 1963).

5294. Dielectric relaxation in a high temperature

dipole lattice, R. Zwanzig. J. Chem. Phys. 38, No. 11, 2766 (1963).

5295. Differential dielectric apparatus for deter- mining water added to solvents, W. C. Wolfe.

Anal. Chem. 35, 1884-1887 (Nov. 1963).

5296. Direct observation of charge storage in the surface states of silicon, G. G. Harman, R. L. Raybold, and 0. L. Meyer. J. Appl. Phys. 34, No.

2, 380-383 (Feb. 1963).

•5297. Discrepancy in conversion of early meltingpoint temperatures, S. J. Schneider. J. Am. Ceram. Soc. 46, No. 7, 354-355 (1963).

-5298. Discussion of paper 63-39 I, "The measurement

of short duration impulse voltages", by F. C. Creed, M. M. C. Collins, and H. N. Cones. IEEE Trans. Commun. Electron. EC-69, 629 (Nov. 1963).

•5299. Dissociation constant of pyrrolidinium ion and related thermodynamic quantities from 0 to

50°, H. B. Hetzer, R. G. Bates, and R. A. Robinson. J. Phys. Chem. 67, No. 5, 1124-1127 (May 1963)

.

•5300. Dissociative ionization of H 2

: a study of angular distributions and energy distributions of resultant fast protons, G. H. Dunn and L. J. Kieffer. Phys. Rev. 132, No. 5, 2109-2117 (Dec.

. 1, 1963)., 5301. Distillation, A. T. Leslie and E. C. Kuehner. Analytical Chemistry, Uandb. XIII, Methods of Separation, Ed. L. Meites, 1st Edition, No. 1, Sect. 10, p. 10-23-10-42 (McGraw-Hill Book Co. Inc., New York N. Y. , Apr. 1963).

5302. Distribution of latitude of red arcs, E. Marovich and F. E. Roach. J. Geophys. Res. 68, No. 7, 1885-1888 (Apr. 1963).

5303. Doppler studies of the ionospheric effects of solar flares, K. Davies. Proc. Intern. Conf. Ion- osphere, July 1962, p. 76-83 (Institute of Physics and the Physical Society, London, England, 1963).

5304. Dose fields from plane sources using point

source data, J. H. Hubbell. Nucleonics 21, No. 8, 144-148 (Aug. 1963).

•5305. Double-photon photodetachment of negative

ions, S. Geltman. Phys. Rev. Letters, 4, No. 3, 168-169 (Apr. 1, 1963).

5306. Editor's preface and foreword to Book, Measurement of Thermal Radiation Properties, J. C. Richmond. (Symp. Measurement of Thermal Radiation

Properties of Solids, Dayton, Ohio, Sept. 5-7, 1962), Natl. Aeron. and Space Admin. SP-31, p. iii (Dec. 1963).

5307. Effect of additives on the ionic reaction mechanism in the radiolysis of methane, P. Ausloos, S. G. Lias, and R. Gorden, Jr. J. Chem.

Phys. 39, No. 12, 3341-3348 (Dec. 15, 1963).

341
1963

5308. Effect of hydrogen-hydrogen exchange collisions, P. L. Bender. Phys. Rev. 132, No. 5, 2154-

2158 (Dec. 1, 1963).

5309. Effect of hydrostatic pressures on the crystallization kinetics of natural rubber, G. M. Martin and L. Mandelkern. J. Appl. Phys. 34, No.

8, 2312-2317 (Aug. 1963).

5310. Effect of insulation on the weathering of smooth-surfaced built-up roofs exposed to solar

heating, W. C. Cullen and W. H. Appleton. Am. Roofer and Bldg. Improvement Contractor Mag. Pt.

I, 53, No. 3, 19-22 (Mar. 1963); Pt . II, 53, No.

4, 14 (Apr. 1963); Construction Specifier Mag.

16, No. 5, 35-38 (Oct. 1963).

5311. Effect of outdoor exposure on some properties

of chrome-retanned leather, T. J. Carter. J. Am. Leather Chemists Assoc. 58, No. 3, 155-160 (Mar. 1963)

.

5312. Effect of rate of loading, time of trituration and test temperature on compressive strength

of dental amalgam, H. J. Caul, R. Longton, W. T. Sweeney, and G. C. Paf f enbarger . J. Am. Dental

Assoc. 67, No. 5, 670-678 (Nov. 1963).

5313. Effective diffusion constant in a polyelectrolyte solution, J. L. Jackson and S. R. Coriell. J. Chem. Phys. 38, No. 4, 959-968 (Feb.

15, 1963).

5314. Effects of magnetic disturbance as noted on oblique incidence ionograms, V. Agy and K. Davies. AGARDograph 59, The Effect of Disturbances of Solar Origin on Communications, ed. G.

J. Gassmann, p. 167-176 (Pergamon Press Inc., London, England, 1963).

5315. Effects of tensile stress on the domain

structure in grain-oriented 3.25$ silicon steel,

J. J. Gniewek. J. Appl. Phys. 34, No. 12, 3618-

3622 (Dec. 1963).

5316. Effects of the nuclear explosion over (Johnston) Island observed in Peru on July 9, 1962,

M. Casaverde, A. Giesecke, and R. Cohen. J. Geophys. Res. 68, No. 9, 2603-2611 (May 1, 1963).

5317. Electric fields in the ionosphere and the excitation of the red lines of atomic oxygen, L. Megill, M. H. Rees, and L. K. Droppleman. Planetary and Space Sci. 11, 45-56 (Jan. 1963).

5318. Electrical properties of elastomers and re- lated polymers, A. T. McPherson. Rubber Chem. Technol. 36, No. 5, 1230-1302 (Dec. 1963).

5319. Electrical resistance-strain characteristics

of thin evaporated metal films, R. L. Parker and

A. Krinsky. J. Appl. Phys. 34, No. 9, 2700-2708

(Sept. 1963).

5320. Electrical standards, F. K. Harris. American

Institute of Physics Handb. 2d edition, Sect. 5c,

p. 5-96-5-106 (1963). 5321. Electrode potentials in fused systems. VI. Membrane potentials, K. H. Stern. J. Phys. Chem.

67, No. 7, 893-895 (Apr. 1963).

5322. Electrodeposition of alloys. Principles and practice. Vol. I. General survey, principles, and alloys of copper and of silver and Vol. II, Practical specific information, A. Brenner. Academic

Press Inc., New York, N. Y. , 1963.

5323. Electroless plating, A. Brenner. Mod. Electroplating, p. 698-713 (1963).

5324. Electrolytic conductance of ammonium dihydrogen phosphate solutions in the saturation region,

J. L. Torgesen and A. T. Horton. J. Phys. Chem.

67, 376-381 (Feb. 1963).

5325. Electromagnetic scattering from a radially inhomogeneous sphere, J. R. Wait. Appl. Sci. Res.

10, Sec. B, 441-450 (Jan. 1, 1963).

5326. Electron attachment coefficients, of some hydrocarbon flame inhibitors, T. G. Lee. J. Phys. Chem. 67, 360-366 (1963).

5327. Electron energy levels and their relationship

to lattice defects in reduced rutile, J. Becker

and W. R. Hosier. (Proc. Intern. Conf. Crystal Lattice Defects), J. Phys. Soc . Japan 18, Suppl.

II, 152-160 (1963).

5328. Electron impact ionization of atomic hydrogen, S. Geltman, M. R. Rudge, and J. J. Seaton.

Proc. Phys. Soc. 81, Pt . 2, No. 520, 375-377

(Feb. 1, 1963).

•5329. Electron microscopy studies of the surfaces

of magnetic recording media, F. Nesh and D. B. Ballard. IEEE Trans. Audio AU-11, No. 1, 15-18

(Jan. -Feb. 1963).

5330. Electron monochromator utilizing the scat- tering resonance in helium, J. A. Simpson, C. E. Kuyatt, and S. R. Mielczarek. Rev. Sci. Instr.

34, No. 12, 1454-1455 (Dec. 1963).

5331. Electron spin resonance of gamma-irradiated

cellulose, R. E. Florin and L. A. Wall. J. Poly- mer Sci. Al, No. 4, 1163-1173 (Apr. 1963). 5332. Electron spin resonance spectra of aged y- irradiated polystyrenes, R. E. Florin, L. A. Wall, and D. W. Brown. J. Polymer Sci. Al, No.

5, 1521-1529 (May 1963).

5333. Electronic properties of solids: Definition

and formulas, H. P. R. Frederikse. American In- stitute of Physics Handb. 2d edition, Sect. 9c,

p. 9-31-9-36 (1963). 5334. Electronic scanning for large radiotelescopes, T. A. Clark. Program and Digest 1963 IEEE

Prof. Group Ant. and Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colo.,

p. 242-246 (July 1963)

.

5335. Energy dependence of proportional-counter fast-neutron dosimeters, R. S. Caswell, W. B. Beverly, and V. Spiegel, Jr. (Proc. Symp. Neutron

Detection, Dosimetry and Standardization, Atomic

Energy Agency, Atomic Energy Research Establishment, Harwell, England, Dec. 10-14, 1962), Book, Neutron Dosimetry II, 227-237 (International Atomic Energy Agency, Vienna, July 1963).

5336. Equatorial electron density profiles to 5000

KM, using the incoherent scatter technique, K. L. Bowles. Third Intern. Space Sci. Symp. Proc. Washington, D. C. , May 2-8, 1962, p. 253-264

(John Wiley and Sons, Inc., New York, 1963).

5337. Equatorial ionospheric variations during geo- magnetic storms, S. Matsushita. J. Geophys. Res.

68, 2595-2601 (May 1, 1963).

5338. Equatorial spread-F motions, W. Calvert, K. Davies, E. C. Stiltner, and J. T. Brown. Proc. Intern. Conf. Ionosphere, July 1962, p. 316-322

(Institute of Physics and the Physical Society,

London, England, 1963).

5339. Equilibrium constants of proton-transfer re- actions, V. E. Bower and R. G. Bates. Handb. Analytical Chemistry, Ed. L. Meites, Sec. 1, 20-27 (McGraw-Hill Book Co., Inc., New York,

N. Y., 1963).

5340. Error bounds for first approximations in turning-point problems, F. W. J. Olver. J. Soc.

Ind. Appl. Math. 11, No. 3, 748-772 (Sept. 1963).

5341. Errors in "drop" calorimetry due to sample container transitions, D. C. Ginnings. J. Phys. Chem. 67, 1917-1918 (1963).

5342. Evidence for field-aligned ionization ir- regularities between 400 and 1000 km above the earth's surface, T. E. VanZandt, W. Calvert, R. W. Knecht, and G. B. Goe . Book, Space Research,

342
1963

ed. W. Priester III, 271-273 (North Holland Publ

.

Co., Amsterdam, The Netherlands, 1963).

5343. Evidence regarding the mechanism of fatigue

from studies of environmental effects, J. A. Bennett. Acta Met. 11, No. 7, 799-800 (July 1963).

5344. Exchange processes in the reaction of boron

trichloride with triethylamine-boron trifluoride,

T. D. Coyle. Proc. Chem. Soc. London, p. 172

(1963) . 5345. Excitation of tt electrons in polystyrene and similar polymers by 20-KeV electrons, N. Swanson

and C. J. Powell. J. Chem. Phys. 39, No. 3, 630-

634 (Aug. 1, 1963).

5346. Experimental determination of the bulk density

of boiling liquid oxygen, R. W. Arnett, D. R. Millhiser, and W. H. Probert. Advan. Cryog. Eng.

8, Paper E-4, 256-262 (1963).

5347. Experimental evaluation of a thallium beam

frequency standard, R. E. Beehler and D. J. Glaze.

Proc. 17th Annual Frequency Control Symp. (1963).

5348. Experimental investigation of Fabry-Perot in- terferometers, R. W. Zimmerer. Proc. IEEE 51, No.

3, 475-476 (Mar. 1963).

5349. Experimental investigation of liquid hydrogen

cooling by helium gas injection, A. F. Schmidt.

Advan. Cryog. Eng. 8, Paper J-5, 521-528 (1963).

5350. Experimental observations and theoretical calculations leading to a model for the lower

ionosphere, R. H. Doherty. Proc. Intern. Conf

.

Ionosphere, July 1962, p. 428-434 (The Institute

of Physics and the Physical Society, London, England, 1963).

5351. Experimental predictions from unitary symmetry

(SU 3 ), C. A. Levinson, H. V. Lipkin, and S. Meshkov. (Proc. 1963 Intern. Conf. Nucleon Structure, Stanford Univ., Calif., June 24-27, 1963), Book, Nucleon Structure, p. 309 (University Press, Stanford, Calif., Aug. 11, 1963).

5352. Experimental statistics, M. G. Natrella. Army

Res. Office, Durham, North Carolina, ORDP 20-110

through 20-114 (1963)

.

5353. Experiments on self -ionizing shock waves in a magnetic field, Y. Nakagawa and K. B. Earnshaw.

Book, Comptes Rendus de la VI Conference Inter- nationale sur les Phenomenes D' Ionisation dans les

Gaz, ed. P. Hubert and E. Cremieu-Alcan, IV, 303-

309 (S.E.R.M.A., Publ. Co., Paris, France, 1963).

5354. Ferroelectric switching and the Sievert in- tegral, P. H. Fang and I. R. Stegun. J. Appl.

Phys. 34, No. 2, 284-286 (Feb. 1963).

5355. Ferromagnetic resonance and shape-dependent

effects, L. A. Steinert. J. Appl. Phys. 34, No. 7, 2106-2107 (July 1963)

.

5356. Field aligned E-region irregularities identified with acoustic plasma waves, K. L. Bowles, B. B. Balsley, and R. Cohen. J. Geophys. Res. 68, No.

9, 2485-2501 (May 1963).

5357. Field emission observations of carbon on tantalum, R. Klein and L. Leder. J. Chem. Phys. 38,

No. 8, 1863-1866 (Apr. 1963).

5358. Field-emission study of carbon monoxide on

tantalum, R. Klein and L. B. Leder. J. Chem. Phys.

38, No. 8, 1866-1872 (Apr. 15, 1963).

5359. Field measurements of air infiltration in ten electrically-heated houses, C. W. Coblentz and P.

R. Achenbach. ASRAE J. 5, No. 7, 69 (July 1963).

5360. First-order perturbation corrections to the Hartree-Fock approximation for helium, A. W. Weiss

and J. B. Martin. Phys. Rev. 132, No. 5, 2118-2122

(Dec. 1, 1963).

53 61. First order phase transition in a gas of long

thin rods, R. Zwanzig. J. Chem. Phys. 39, No. 7, 1717-1721 (Oct. 1963).

34

5362. First results in NASA topside sounder satellite, R. W. Knecht, S. Russell, and J. E. Jackson. Book, Advances in the Astronautical Sciences

11, 61-85 (Western Periodicals Co., Calif.,

1963)

.

5363. Force and seal evaluation of elastomeric o- rings, P. R. Ludtke and D. H. Weitzel. Advan.

Cryog. Eng. 8, Paper 4-6, 467-477 (June 1963).

5364. Form and angular distribution of proton groups

at about Q=0 Mev in the proton spectra of (d,p) reactions of heavy nuclei, J. Pfleger, U. SchmidtRohr, V. Speigel, P. Turek, and W. Zuckschwerdt

.

Nuclear Phys. 48, No. 1, 22-32 (Sept. 1963).

5365. Formation and oxidation of high area carbon

films, V. Deitz and E. F. McFarlane. Proc. Fifth

Carbon Conf. 2, 219-232 (Pergamon Press Inc., London, England, 1963).

53 66. Foundations of the Callaway theory of thermal conductivity, R. E. Nettleton. Phys. Rev. 132,

No. 5, 2032-2038 (Dec. 1, 1963).

5367. Fresnel zone diffraction effects at 50 Gc/

sec. Determined from measured aperture field

data, R. C. Baird. Program and Digest 1963 IEEE

Prof. Group Ant. and Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colo., p. 171-173 (1963).

5368. Fundamentals of measurement, A. G. McNish. Electro-Technol. 53, 113-128 (May 1963).

5369. Galvanic currents observed during outdoor

exposure of an iron-nickel cell, F. Ogburn and

R. L. Myklebust. 50th Annual Tech. Proc. American Electroplaters Society, p. 24-28 (1963). 5370. Gal vanostalametry , a new technique based on

the negative pressure of liquids, for investigating electrochemical phenomena at an electrode,

J. Sligh and A. Brenner. J. Electrochem. Soc.

110, No. 11, 1136-1142 (Nov. 1963).

5371. Gamma irradiation of polytetraf luoroethylene

in chlorine, R. E. Florin and L. A. Wall. SPE

Trans. 3, No. 4, 290-299 (Oct. 1963).

5372. Gas evolution from metal surfaces during

fatigue stressing, W. L. Holshouser and J. A. Bennett. Proc. ASTM 62, 683 (1963).

5373. Gas measurement and other services of the National Bureau of Standards, C. T. Collett. Am. Gas Assoc. Preprint No. DMC-63, p. 1-3 (1963).

5374. Gas-phase radiolysis of isobutane, R. P. Borkowski and P. Ausloos. J. Chem. Phys. 38, No.

1, 36-44 (Jan. 1, 1963).

5375. Gas-phase radiolysis of n-butane, R. P. Borkowski and P. J. Ausloos. J. Chem. Phys. 39,

No. 3, 818-824 (Oct. 1963).

5376. Generalized variation principles for electro- magnetic vibrations; application to the theory of waveguide junctions, D. M. Kerns. Proc. Symp. Electromagnetic Theory and Antennas, Copenhagen,

Denmark, June 25-30, 1962, Ed. E. C. Jordan, p. 253-259 (Pergamon Press Inc., London, England,

1963)

.

5377. Geomagnetic and solar data, J. V. Lincoln. J. Geophys. Res. 67-68 (June 1962 to June 1963).

5378. Growth and evaporation kinetics and surface diffusion of K and Hg crystal whiskers, R. L. Parker, R. L. Anderson, and S. C. Hardy. Appl.

Phys. Letters 3, No. 6, 93-95 (Sept. 15, 1963). 5379. Hartree-Fock approximation of CH4 and NH 4 +, M. Krauss. J. Chem. Phys. 38, No. 2, 564-565

(Jan. 15, 1963).

5380. Heat capacities, G. T. Furukawa and T. B. Douglas. American Institute of Physics Handb. 2d edition, Sect. 4e, p. 4-47-4-63 (1963). 5381. Heating rate as a test of adiabatic calorim- eters and the heat capacity of n -alumina, E. D. West. Trans. Faraday Soc. 59, Pt . 9, 489, 2200-

2203 (Sept. 1963).
1963

5382. Heats of formation of two isomers of difluorodiazine, G. T. Armstrong and S. Marantz. J. Chem. Phys. 38, No. 1, 169-172 (Jan. 1963).

5383. High-field liquid H 2 -cooled aluminum-wound

magnet, J. R. Purcell and E. G. Payne. Rev. Sci. Instr. 34, No. 8, 893-897 (Aug. 1963).

5384. High frequency microvolt measurements, F. X. Ries. ISA Preprint, p. 37.2.63-1—37.2.63-5

(Sept. 1963).

5385. HF propagation characteristics in equatorial

latitudes, A. Barghausen, G. Jacobs, and D. Lillie. Program and Digest of 1963 IEEE Prof.

Group. Ant. and Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colo., p. 37-42

(1963) . 5386. High pressure measurement, A. VanValkenberg.

(Proc. High-Pressure Measurement Symp., New York,

N. Y., Nov. 1962), Book, High-Pressure Measurement, ed. A. A. Giardini and E. C. Lloyd, p. 87-

94 (Butterworth Inc., Washington, D. C., 1963).

5387. High-pressure measurement, A. A. Giardini and

E. C. Lloyd. Editors, Book, (Proc. High-Pressure Measurement Symp., New York, N. Y. , Nov. 1962), 409 pages (Butterworth Inc., Washington, D. C.

,

1963)

.

5388. High-pressure x-ray diffraction studies, G.

J. Piermarini. Proc. 13th Chemical Engineering

Conf., Montreal, Canada, Oct. 19-23, 1963, pp. 182-185 (Chemical Institute of Canada, 1963).

5389. Highly ionized atoms: the configurations

s

2 pn (n=l,2,4, 5) , F. Rohrlich and C. Pecker. Astrophys. J. 138, No. 4, 1246-1261 (Nov. 15, 1963)

.

5390. Homogeneous anionic polymerization. I. Mo- lecular weights of polystyrene initiated by sodium naphthalene, M. Morton, R. Milkovich, D. Mclntyre, and J. L. Bradley. J. Polymer Sci. 1, Pt. A, 443-459 (Jan. 1963).

5391. Humidity (measurement of moisture in gas),

A. Wexler. ISA Transducer Compendium, p. 502-508

(Sept. 1963).

5392. Hydrogen atom addition to solid four-carbon

olefins, R. Klein and M. D. Scheer. J. Phys. Chem. 67, 1874-1877 (Sept. 1963).

5393. Hydrogen retention system for pressure cali- bration of microphones in small couplers, W. Koidan. J. Acoust . Soc. Am. 35, No. 4, 614 (Apr. 1963)

.

5394. Hyper fine structure and isotope shifts in the 2537-A line of mercury by a new interferometr ic method, W. G. Schweitzer, Jr. J. Opt. Soc. Am.

53, No. 9, 1055-1072 (Sept. 1963).

5395. Hyperfine structure in the spectrum of mercury hydride, T. L. Porter and S. P. Davis. J. Opt. Soc. Am. 53, No. 3, 338-343 (Mar. 1963).

5396. Hypervelocity cratering data, and a crater

depth model for the regime of partial fluidity,

0. G. Engel. Proc. 6th Hypervelocity Impact

Symp., Cleveland, Ohio, Apr. 30-May 1, 1963, II, Pt. II, 337-366 (U. S. Army Ballistics Res. Lab., Aberdeen Proving Ground, Md., Aug. 1963).

5397. Ideal yield of a Simon liquefier, L. E. Scott. Cryogenics 3, 111-112 (June 1963).

5398. Impedance of Leclanche cells and batteries,

R. J. Brodd and H. J. DeWane. J. Electrochem.

Soc. 110, No. 11, 1091-1097 (Nov. 1963).

5399. Impressions of Japan, R. S. Marvin. Japanese

J. Kobunshi (High Polymers), Soc. High Polymers

12, No. 130, 53 (1963).

5400. Improved sample holder for X-ray diffractometer furnace, E. M. Levin and F. A. Mauer. J. Am. Ceram. Soc. 46, No. 1, 59-60 (Jan. 1963).

5401. Improved transducer for external recording of arterial pulse waves, M. Davis, B. Gilmore, and E. Freis. IEEE Trans. Bio-Med. Elec. BME-10, No. 4, 173-175 (Oct. 1963).

5402. Impurity controlled properties of ionic

solids, A. D. Franklin. (Proc. Symp. Physics and Chemistry of Ceramics, Pennsylvania State Univ., University Park, Pa., May 28-30, 1963), Book, Physics and Chemistry of Ceramics, pp. 77-109

(Gordon and Breach, New York, N.Y., 1963).

5403. Index to Journal of Association for Computing

Machines, W. W. Youden. ACM J. 10, No. 4, 583-646

(Oct. 1963).

5404. Index to the communications of the ACM, W. J. Youden. 1958-1962, Commun. ACM 6, No. 3, 1-32

(Mar. 1963).

5405. Inductive voltage dividers with calculable

relative corrections, T. L. Zapf, C. H. Chinburg,

and H. K. Wolf. IEEE Trans. Instr. Meas. IM-12,

No. 2, 80-85 (Sept. 1963).

5406. Infrared absorption spectra of B 2 03 , B 2 03 and B02 in solid argon matrices, A. Sommer, D. White,

M. J. Linevsky, and D. E. Mann. J. Chem. Phys.

38, No. I, 89-98 (Jan. 1963).

5407. Infrared absorption spectra of carbon sub- oxide and malononitrile in solid argon matrices,

L. L. Ames, D. White, and D. E. Mann. J. Chem.

Phys. 38, No. 4, 910-917 (Feb. 1963).

5408. Infrared dispersion of some oxide glasses,

I. H. Malitson, G. W. Cleek, 0. N. Stavroudis,

and L. E. Sutton. Appl. Opt. 2, No. 7, 741-747

(July 1963)

.

5409. Infrared spectrum of dif luoramine, J. J. Comeford, D. E. Mann, L. J. Schoen, and D. R. Lide, Jr. J. Chem. Phys. 38, No. 2, 461-463 (Jan. 1963)

.

5410. Infrared transmission of the atmosphere to solar radiation, D. M. Gates and W. J. Harrop.

Appl. Opt. 2, No. 9, 887-898 (Sept. 1963).

5411. Inhibition of opposed-jet methane-air dif- fusion flames, the effects of alkali metal

vapors and organic halides, R. Friedman and J. B. Levy. Combustion and Flame 7, No. 2, 195 (June

1963)

.

5412. Instability of the equatorial F layer after

sunset, W. Calvert. J. Geophys. Res. 68, No. 9, 2591-2594 (May 1, 1963).

5413. Instrument for the continuous measurement of

the density of flowing fluids, C. E. Miller, R.

B. Jacobs, and J. Macinko. Rev. Sci. Instr. 34,

No. 1, 24-27 (Jan. 1963). 5414. Interaction energies and transport coefficients, of Li+H and O+H gas mixtures at high tem- peratures, P. H. Krupenie. J. Chem. Phys. 39, No.

10, 2399-2408 (Nov. 15, 1963).

5415. Interaction matrix element in a shell model,

U. Fano, F. Prats, and Z. Goldsmith. Phys. Rev.

129, No. 9, 2643-2652 (Mar. 16, 1963).

5416. Intercomparison of national roentgen and gamma-ray exposure-dose standards, H. 0. Wyckoff,

A. Allisy, G. H. Aston, G. P. Barnerd, W. Hubner,

T. Loftus.and G. Taupin. Acta Radiol. 1, No. 1, 57-78 (Feb. 1963).

5417. Intercomparisons of the standard thermal- neutron flux density of the National Bureau of Standards, W. M. Murphey and J. Chin. (Proc. Symp. Neutron Detection, Dosimetry and Standardization, International Atomic Energy Agency, Atomic Energy Research Establishment, Harwell, England, Dec. 10-14, 1962), Book, Neutron Dosimetry II, 513-521 (International Atomic Energy

Agency, Vienna, 1963).

344
1963

5418. Interference fringes with long path difference using He-Ne laser, T. Morokuma, K. F. Nefflen, T. R. Lawrence, and T. M. Klucher, J. Opt.

Soc. Am. 53, No. 3, 394-395 (Mar. 1963).

5419. Unassigned.

5420. International Geophysical calendar for 1963,

A. H. Shapley and J. V. Lincoln. URSI Info. Bull.

135, 68-75 (Nov. -Dec. 1962); J. Radio Res. Lab. Japan 9, 45 (1962); I. G. Bull. 67, 9-12 (Jan. 1963); COSPAR Info. Bull. 13, 30-33 (Jan. 1963); Nature 197, 6-8 (Jan. 1963); J. Atmospheric Terrest. Phys. 25, 51-53 (Jan. 1963); WMOBull. 12, No. 1, 26-27 (Jan. 1963); J. Geophys. Res. 68, No. 4, 1157-1159 (Feb. 1963); IUGG Chronicle 45, 81 (Feb. 1963); Trans. AGU 44, 225-228 (Mar. 1963); IQSY Notes 4, 34 (Sept. 1963).

5421. International standardization—A new responsibility of the engineer, A. T. McPherson. Natl.

Acad. Sci.-Natl. Res. Council Div. of Eng. and

Ind. Res. Newsletter 26, 2-4 (June 1, 1963).

5422. International geophysical calendar for the years of the quiet sun 1964-1965, A. H. Shapley

and J. V. Lincoln. J. Radio Res. Labs. Japan 10, 185-192 (Mar. 1963); IUGG Chronicle 50, 171-174

(July 1963); URSI Inform. Bull. 139, 64-71 (JulyAug. 1963); IGBull. 74, 15-18 (Aug. 1963); Weatherwise 16, 160-161 (Aug. 1963); J. Geophys.

Res. 68, 5318-5323 (Sept. 15, 1963); Trans. Am. Geophys. Union 44, 821-824 (Sept. 1963).

5423. Interpretation of pH measurements in alcoholwater solvents, R. G. Bates, M. Paabo, and R. A. Robinson. J. Phys. Chem. 67, No. 9, 1833-1838

(Sept. 1963).

5424. Intramolecular rearrangements. V. Formation

of ethylene in the photolysis of ethyl acetate

from 4 to 500°K, P. Ausloos and R. E. Rebbert . J. Phys. Chem. 67, No. 1, 163-167 (Jan. 1963).

5425. Intrinsic attenuation, R. W. Beatty. IEEE Trans. Microwave Theory Tech. 11, No. 3, 179-182

(May 1963)

.

5426. Introduction to the International Symposium

on equatorial aeronomy, R. Cohen and K. L. Bowles. J. Geophys. Res. 68, No. 9, 2359-2361

(May 1963).

5427. Investigation of shallow reference cavities

for high-temperature emittance measurements, D.

G. Moore. (Symp. Measurement of Thermal Radiation

Properties of Solids, Dayton Ohio, Sept. 5-7, 1962) , Natl. Aeronl and Space Admin. SP-31 , Ses- sion V, Paper 52, p. 515 (1963).

5428. Ionization of High Temperature Gases, K. E. Shuler. Editor, Volume XII of Progress in Astronautics and Aeronautics, Academic Press Inc., New

York, N. Y. , 1963.

5429. Ionospheric variations during geomagnetic

storms, S. Matsushita. Proc. Intern. Conf. Iono- sphere July 1962, p. 120-127 (Institute of Physics and the Physical Society, London, England, 1963).

5430. IQSY Instruction Manual. No. 1. World days,

A. H. Shapley. 32 pages IQSY Secretariat, London, England (July 1963)

.

5431. Iron, V. A. Lamb and C. T. Thomas. Mod. Electroplating, p. 228-241 (1963).

5432. Isopiestic vapor pressure measurements, of

the ternary system: sorbitol-sodium chloridewater at 25°, V. E. Bower and R. A. Robinson. J. Phys. Chem. 67, No. 7, 1540-1541 (July 1963).

5433. Isotopic fractionation of uranium in sandstone, W. R. Shields, E. L. Garner, and J. N. Rosholt. Science 139, No. 3551, 224-226 (Jan. 1963) .

5434. Kihara parameters and second virial coef- ficients for cryogenic fluids and their mixtures,

J. M. Prausnitz and A. L. Myers. A.I.Ch.E. 9, No. 1 , 5-11 (June 1963)

.

5435. Kinetics of desorption II: Cs and Ba from

rhenium, M. D. Scheer and J. Fine. J. Chem. Phys.

38, No. 2, 307 (Jan. 1963).

5436. Kinetics of desorption. III. Rb

+

, K

+

, and Na

+ on rhenium, M. D. Scheer and J. Fine. J. Chem.

Phys. 39, No. 7, 1752-1755 (Oct. 1963).

5437. Kinetics of the acid-catalyzed reaction of acetal in water-acetone solvents at 15, 25, and

35°, R. K. Wolford. J. Phys. Chem. 67, No. 3, 632-636 (Mar. 1963).

5438. Klystron protection circuit, W. E. Case and

N. T. Larsen. Rev. Sci. Instr. 34, No. 7, 809-810

(July 1963)

.

5439. Knight-shifts and line widths of the nuclear magnetic resonance of Pb 207 in lead-indium alloys, R. J. Snodgrass and L. H. Bennett. Phys.

Rev. 132, No. 4, 1465-1474 (Nov. 15, 1963).

5439A. Laboratory study of the effect of solar radiation on cooling load of stationary refrigerated vehicles, P. R. Achenbach and C. W. Phillips, (Proc. XI Intern. Congress of Refrigeration, Munich, Germany, 1963), Book, Progress

in Refrigeration Science and Technology III, 1631-1635 (Pergamon Press Inc., New York, N. Y. 1963).

5440. Lactonization of aldonic acids. D-glucono-1

,

5-lactone, and lactobiono-1 , 5-lactone, H. S. Isbell and H. L. Frush. Book, Methods in Carbo- hydrate Chemistry, 2, 16 (Academic Press Inc., New York, N. Y. , 1963)

.

5441. Large-angle inelastic scattering of 500-keV

electrons, J. W. Motz and R. C. Placious. Phys.

Rev. 132, No. 3, 1120-1122 (Nov. 1963).

5442. Large longitudinal retarded elastic deformation of rubberlike network polymers. II. Application of a general formulation of nonlinear response, H. Leaderman and F. L. McCrackin. Trans.

Soc. Rheology VII, 111-123 (1963). 5443. Lasers, T. R. Lawrence. J. Wash. Acad. Sci.

53, 25-34 (Feb. 1963).

5444. Leaf temperature and energy exchange, D. M. Gates. Arch. Meteorol. Geophys. Bioklimatol. Ser.

B, 12, No. 2, 321-336 (1963).

5445. Line shapes, saturation behavior, and tem- perature studies in the nuclear resonance of nickel, R. L. Streever and L. H. Bennett. Phys.

Rev. 131, No. 5, 2000-2009 (Sept. 1963).

5446. Line transfer problems, J. T. Jeffries. J. Quant. Spectry. Radiative Transfer 3, No. 2, 217-

220 (Apr. -June 1963).

5447. Linear thermal expansion of elastomers in the range 300° to 76°K, R. F. Robbins, Y. Ohori, and

D. H. Weitzel. Advan. Cryog. Eng. 8, Paper E-8, 287-299 (1963).

5448. Linear velocity-gradient term in time-dependent pair distribution function, R. E. Nettleton.

J. Chem. Phys. 38, No. 8, 1791-1802 (Apr. 15, 1963)

.

5449. Lines of constant correlated color temperature based on MacAdam's (u,v) uniform chromaticity transformation of the CIE diagram, K. L. Kelly. J. Opt. Soc. Am. 53, No. 8, 999-1002 (Aug. 1963)

.

5450. Liquid requirements for the cool-down of cryogenic equipment, R. B. Jacobs. Advan. Cryog.

Eng. 8, Paper J-6, 529-535 (1963).

345
1963

5451. Long-term characteristics for air-ground propagation in band nine, R. S. Kirby. Program

and Digest 1963 IEEE Prof. Group Ant. and Prop.

Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colorado, p. 43-47 (1963).

54 52. Low energy levels of neutral cerium (Ce I), W. C. Martin. J. Opt. Soc . Am. 53, No. 9, 1047-

1050 (Sept. 1963).

5453. Lunar point-to-point communication, L. E. Volger. Book, Technology of Lunar Exploration, Progress in Astronautics and Aeronautics 9, 533-

559 (Academic Press Inc., New York, N. Y. , 1963).

5454. Macro-pores in leather as determined with a mercury porosimeter, J. R. Kanagy. J. Am. Leather

Chemists' Assoc. LVIII, No. 9, 524-550 (Sept. 1963)

.

5455. Magnetic properties of some ilmenite-hematite solid solutions (abstract), C. F . Jefferson

and R. G. West. Am. Ceramic Soc. Bull. Sixty- Fifth Annual Meeting 42, No. 4, 215 (Apr. 1963).

5456. Magnetic susceptibilities and dilution ef- fects in low-spin d

4 complexes: osmium (IV), R.

B. Johannesen and G. A. Candela. Inorg. Chem. 2, 67-72 (Feb. 1963).

5457. Magnetically retained evaporation mask, F. E. Jones and A. B. Castle, Sr. Rev. Sci. Instr. 34, No. 9, 1055 (Sept. 1963).

5458. Maintenance of electrical units at the Na- tional Bureau of Standards, R. D. Cutkosky and

R. L. Driscoll. Comite Consult. d'Elec. B.I. P.M., 9th Session, Oct. 1961, p. 33-35 (May 1963).

5459. Mass spectra and metastable transitions of H 2 S, HDS, and D 2 S, V. H. Dibeler and H. M. Rosenstock. J. Phys. Phys. 39, No. 11, 3106-3111

(Dec. 1, 1963).

5460. Mass spectrometric study of the recombination

of bromine and chlorine atoms on Pyrex, J. T. Herron. J. Phys. Chem. 67, No. 12, 2864-2865

(Dec. 1963).

5461. Mathematical programming models for selection

of diets to minimize weighted radionuclide intake, H. J. Bracken. Environmental Health Series: Radiological Health, Public Health Serv. Publ. 999-R-4 (Dept. Health, Education, and Welfare, Washington, D. C. , Aug. 1963).

5462. Mathematics and experimental science, W. J. Youden. Sci. Teacher 30, No. 5, 23-26 (Sept. 1963)

.

5463. Maximum efficiency of a two-arm waveguide

junction, R. W. Beatty. IEEE Trans. Microwave

Theory Tech. 11, No. 1, 94 (Jan. 1963).

5464. Mean first passage times and the dissociation of diatomic molecules, K. E. Shuler and G. Weiss. J. Chem. Phys. 38, No. 2, 505-509 (Jan. 1963)

.

5465. Measurement of a maximum in the isothermal crystallization rate-temperature curve for polypentene-1, F. A. Quinn, Jr., and J. Powers. J. Polymer Sci. Bl , No. 7, 341-344 (July 1963).

5466. Measurement of moisture boundary layers and leaf transpiration with a microwave ref Tactometer

,

D. M. Gates, J. Vetter, and M. C. Thompson. Nature 197, 1070-1072 (Mar. 1963).

5467. Measurement of the cross section for elastic scattering of slow electrons by hydrogen atoms,

W. L. Wiese. Proc. Vlth Intern. Conf. Ionization Phenomena in Gases, Paris, France, 1963, I, 5-8

(July 1963)

.

5468. Measurement of the lattice constants of neon

isotopes in the temperature range 4-24°K, L. H. Bolz and F. A. Mauer. (Proc. 11th Annual Conf.

Applications of X-ray Analysis, Denver Res.

Inst., Denver, Colo.), Book, Advances in X-ray

Analysis 6, 242-249 (Plenum Press Inc., New York,

N. Y., 1963).

5469. Unassigned.

5470. Measuring plasma density of the magnetosphere, K. L. Bowles. Science 139, No. 3553, 389-

391 (Feb. 1, 1963).

5471. Mechanical and electrical relaxation in Th02 containing CaO, J. B. Wachtman, Jr. Phys. Rev.

131, No. 2, 517-527 (July-Sept. 1963).

5472. Mechanical properties of glass at elevated

temperatures, M. J. Kerper and T. G. Scuderi.

Bull. Am. Ceram. Soc. 42, No. 12, 735-740 (Dec. 1963)

.

5473. Metallurgical microanalysis with the electron

probe, Cuthill, Jr., L. L. Wyman, and H. Yakowitz. J. Metals 15, No. 10, 736-768 (Oct. 1963).

5474. Metastable levels in the continuum and the independent particle model, F. Prat and U. Fano.

Proc. Ill Intern. Conf. Physics of Electronics

and Atomic Collisions, London, England, pp. 600- 605 (July 22-26, 1963)

.

5475. Metastable transitions in mass spectra of methane and the deuteromethanes , V. H. Dibeler

and H. M. Rosenstock. J. Chem. Phys. 39, 1326

(1963)

.

5476. Method for comparing two nearly equal potentials directly in parts per million, C. J. Saunders. Rev. Sci. Instr. 34, No. 12, 1452-1453

(Dec. 1963).

5477. Method for finding the density expansion of transport coefficients of gases, R. Zwanzig.

Phys. Rev. 129, No. 1, 486-494 (Jan. 1963).

5478. Methods for the analysis of cement, B. L. Bean. Handb. Analytical Chemistry, Sect. 13, p. 73-75 (McGraw-Hill Book Co. Inc., New York, N.Y.,

Mar. 1963).

5479. Methods for the analysis of rubber and re- lated products, M. Tryon and E. Horowitz. Analytical Chemistry Handb. Sec. 13, p. 233-256 (Mc- Graw-Hill Book Co., Inc., New York, N. Y. , 1963).

5480. Methods of calibration of airglow photometers

at Fritz Peak Observatory, L. L. Smith and R. B. Alexander. IQSY Instruction Manual. No. 5: Airglow, Pt. II, p. 25-36 (IQSY Secretariat, London, England, 1963).

5481. Methods of testing, F. Ogburn. Book, Modern

Electroplating, p. 661-697 (John Wiley and Sons,

Inc., New York, N. Y. , 1963).

5482. Metrology as related to microminiaturization

processes, T. R. Young. Proc. Microminiaturization Congress, New York, N. Y., Mar. 10-13, 1962

(American Watchmakers Inst., New York, N. Y., Mar. 1963).

5483. Microbalance techniques for high temperature

application. Further developments, N. J. Carrera

and R. F. Walker. Book, Vacuum Microbalance Techniques 3, 153-177 .(Plenum Press, Inc., New York,

N. Y., 1963).

5484. Microscopy of color phenomena in polymer

fracture, S. B. Newman and I. Wolock. Proc. Symp. Adhesion and Cohesion, p. 218-239 (Elsevier Publ.

Co., Amsterdam, The Netherlands, 1963).

5485. Microwave spectrum and structure of difluoramine, D. R. Lide, Jr. J. Chem. Phys. 38, No. 2, 456-460 (Jan. 1963).

5486. Microwave spectrum of aluminum monof luoride

,

D. R. Lide, Jr. J. Chem. Phys. 38, No. 8, 2027

(Apr. 1963).

5487. Microwave spectrum of tertiary butyl chloride; a comparison of tertiary butyl structures, 346
1963

D. R. Lide, Jr.. and M. Jen. J. Chem. Phys. 38,

No. 7, 1504-1507 (Apr. 1963).

5488. Microwave standards and measurements, a progress review 1960-1963, R. W. Beatty. IEEE Trans.

Instr. Meas. IM-12, No. 3, 134-138 (Dec. 1963).

5489. Millimeter wave research at the National Bureau of Standards, R. W. Zimmerer. Proc. Mountain

States Navy Research and Development Clinic,

Raton, N. M. , Sept. 28-29, 1961, p. A109-A112

(Raton, Communications and Electronics Foundation, 1963).

5490. Millimeter wavelength resonant structures,

R. w. Zimmerer, M. V. Anderson, Y. Beers, and

G. L. Strine. IEEE Trans. Microwave Theory and

Tech. MTT-11, No. 2, 142-149 (Mar. 1963).

5491. Minutes of the meeting at Tokyo, Japan, of the triple commission for spectroscopy, C. E. Moore. Sept. 9, 1962, J. Opt. Soc. Am. 53, No. 7, 883-893 (July 1963)

.

5492. Modulary groups of t x t matrices, M. Newman

and J. R. Smart. Duke Math. J. 30, 253-257

(1963)

.

5493. Molecular vib-rotors. The theory and inter- pretation of high resolution infrared spectra,

H. C. Allen, Jr.. and P.C. Cross. Book, (John Wiley

and Sons, Inc., New York, N.Y. 1963).

5494. Momentum autocorrelation functions and energy

transport in harmonic crystals containing

isotopic defects, R. J. Rubin. Phys. Rev. 131, No. 3, 964-989 (Aug. 1, 1963).

5495. Monte Carlo calculations of the penetration

and diffusion of fast charged particles, M. J. Berger. Book, Methods in Computational Physics,

Ed. B. Alder, S. Fernbach, and M. Rotenberg, I, 135-215 (Academic Press Inc., New York, N. Y.

,

1963).

5496. Multipliers of difference sets, M. Newman.

Can. J. Math. 15, 121-124 (Nov. 1963).

5497. NBS activities for the American Rubber In- dustry, G. M. Kline. L' Industria della Gomma VII,

No. 6, 29-33 (June 1963).

5498. NBS microcopy resolution test chart, B. H. Fouquet. Proc. National Microfilm Association

Meeting, San Francisco, Calif., Apr. 30-May 1, 1963, p. 67-74 (1963).

5499. Natural and synthetic rubbers, E. J. Parks

and F. J. Linnig. Anal. Chem. 35, No. 5, 160R178R (Apr. 1963).

5500. Natural electromagnetic field fluctuations

in the 3.0 to 0.02 cps range, W. H. Campbell.

Proc. IEEE 51, No. 10, 1337-1342 (Oct. 1963).

5501. New absolute null method for the measurement of magnetic susceptibilities in weak low-frequency fields, C. T. Zahn. Rev. Sci. Instr.

34, No. 3, 285-291 (Mar. 1963).

5502. New autoionizing atomic energy levels in He, Ne and A, ! R. P. Madden and K. Codling. Phys.j Rev. Letters 10, No. 12, 516-518 (June 15, 1963).

5503. Nickel and alloys, M. R. Meyerson. Encyclopedia of Engineering Materials and Processes, p. 439-442 (Reinhold Publ. Corp., New York, N. Y., 1963) . 5504. Nightglow, F. E. Roach. Adv. Electron. Electron Phys. 18, 1-44 (1963). 5505. 1963 time and frequency constant, W. D. George. Frequency Letter 1, 3 (Jan. -Feb. 1963).

5506. Nitrogen NMR chemical shifts, in the azide

ion, R. A. Forman. J. Chem. Phys. 39, No. 9, 2393 (Nov. 1, 1963).

5507. Noise in VLF to HF bands and prediction of communication reliability, W. Q. Crichlow. Proc. Mountain States Navy Research and Development

Clinic, Raton, N. M. , Sept. 28-29, 1961, p. A67-

A70 (Raton, Communications and Electronics

Foundation, 1963).

5508. Non-linear effects in spectra of the iron

group, R. Trees. Phys. Rev. 129, No. 3, 1220-

1224 (Feb. 1, 1963).

5509. Nonreciprocity of propagation of VLF radio

waves along the magnetic equator, D. D. Crombie.

Proc. IEEE 51, No. 4, 617-618 (Apr. 1963).

5510. Normal congruence subgroups of the modular

group, M. Newman. Am. J. Math. 85, No. 3, 419-

427 (1963).

5511. Normal congruence subgroups of the t x t modular group, M. Newman. Bull. Am. Math. Soc.

69, No. 5, 719-720 (Sept. 1963).

5512. Normal functions, the Montel property, and interpolation in H °°, G. T. Cargo. Michigan Math.

J. 10, 141-146 (1963). 5513. Note on a subgroup of the modular group,

M. Newman and J. R . Smart. Proc. Am. Math. Soc.

14, No. 1, 102-104 (Feb. 1963).

5514. Note on observations on reference electrodes

for fused salt systems, M. A. Reid and J. A. Lloyd. Rev. Sci. Instr. 34, No. 8, 940-941

(Aug. 1963).

5515. Note on the 4-body system, T. Stovall and

M. Danos. Physics Letters 7, No. 4, 278-281 (Oct.

23. 1963).

5516 v 3 vibration of methane in condensed oxygen, nitrogen, S. Abramowitz and H. P. Broida. J. Chem. Phys. 39, No. 9, 2383-2384 (Nov. 1, 1963). 5517. Nuclear magnetic resonance in metal powders

at low temperatures, R. J. Snodgrass and L. H. Bennett. J. Appl. Spectry. 17, No. 2, 53-54

(1963) . 5518. Nuclear moment of Ni 81 from nuclear resonance

studies in steady external magnetic fields, R. L. Streever. Phys. Rev. Letters 10, No. 6, 232-234

(Mar. 1963).

5519. Nuclear orientation, E. Ambler. Book, Methods

of Experimental Physics 5, Sec. 2.4-2.3. 162-214

(Academic Press Inc., New York, N. Y. , 1963).

5520. Nuclear Physics Section, L. F. Curtiss, Editor. 8, p. 8-1-8-327, American Institute of Physics Handb. 2d edition (1963).

5521. Nuclear resonance and the hyperfine field in dilute alloys of nickel in iron, R. L. Streever,

L. H. Bennett, R. C. LaForce, and G. F. Day.

J. Appl. Phys. Suppl. Magnetism 34, No. 4, Pt . 2, 1050-1051 (Apr. 1963).

5522. Numerical computation of time-dependent

properties of isotopically disordered one-di- mensional harmonic crystal lattices, R. J. Rubin.

J. Phys. Soc. Japan 18, Suppl. II, 63-69 (1963). 5523. Numerical solutions of the convolution- hypernetted chain integral equation for the pair correlation function of a fluid. II. The hard

sphere potential, M. Klein. J. Chem. Phys. 39,

No. 6, 1388-1397 (Sept. 15, 1963).

5524. Numerical solutions of the convolution- hypernetted chain integral equation for the pair correlation function of a fluid. I. The LennardJones (12.6) potential, M. Klein and M. S. Green. J. Chem. Phys. 39, No. 6, 1367-1387 (Sept.

15, 1963).

5525. Oblique incidence pulse measurement at 100

kc, R. H. Dougherty. AGARDograph 74, Propagation

of Radio Waves at Frequencies Below 300 Kilocycles, p. 133-148 (Pergamon Press Inc., New

York, N. Y. , 1963).

5526. Observation on reference electrodes for

f used-salt systems, M. A. Reid and J. A. Lloyd.

Rev. Sci. instr. 34, No. 8, 940-941 (Aug. 1963).

5527. Observations on dislocation loops in de- formed copper, A. W. Ruff, Jr., and L. M. Kushner.

34 7
1963

Proc. Conf. Relations Between the Structure and

Mechanical Properties of Metals, National

Physical Lab., Teddington, Middlesex, England,

1, 146-156 (1963).

5528. Observations of synchrotron radio noise at the magnetic equator following the high altitude nu- clear explosion of July 9, 1962, G. R. Ochs , D. T. Farley, Jr., K. L. Bowles, and P. Bandyopadhay

.

J. Geophys. Res. 68, No. 3, 701-711 (Feb. 1963).

5529. On an extreme rank sum test for outliers,

W. A. Thompson and T. A. Willke. Biometrika 50, No. 3 and 4, 375-383 (Dec. 1963).

5530. On the connection between the theories of collisions and of atomic spectra, U. Fano and

F. Prats. Proc. Natl. Acad. Sci., India XXXIII,

Pt. IV, 553-562 (1963). 5531. On the dependence of absorption coefficients

upon the area of the absorbent material, E. D. Daniel. J. Acoust . Soc. Am. 35, No. 4. 571-573

(Apr. 1963).

5532. On the effect of solar disturbances on the low-radiof requency ionosphere reflection process, J. R. Johler and J. D. Harper, Jr. (North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Avionics

Panel. 6th Symp. Ionospheric Research Committee,

AGARD, Naples, Italy, 1961). Book, The Effect

of Disturbances of Solar Origin on Communications,

Ed. G. J. Gassman, pp. 303-304 (Pergamon Press,

Inc., New York, N. Y . , 1963).

5533. On the growth of helical dislocations,

R. DeWit. Trans. AIME 227, 1443-1452 (Dec. 1963) . 5534. On the isomerization of isobutyl radicals,

J. R. McNesby and W. M. Jackson. J. Chem. Phys.

38, No. 3, 692-693 (Feb. 1963).

5535. On the interpretation of prominence spectra.

VI. Temperature determination and a model for quiescent prominences, J. T. Jefferies and F. Q. Orrall. Astrophys. J. 137, No. 4, 1232-1241 (May

15, 1963).

5536. On the nature of the crystal field approximation. II. Numerical results, R. T. Berger and

C. M. Herzfeld. J. Chem. Phys. 39, No. 4, 1122-

1126 (Aug. 15, 1963).

5537. On the production of the Z~ (ft-

) baryon,

H. J. Lipkin, C. A. Levinson, and S. Meshkov. Physics Letters 7, No. 2, 159-161 (Nov. 1, 1963).

5538. On the propagation of long wave-length ter- restrial radio waves—two theoretical techniques,

J. R. Johler and L. A. Berry. AGARDograph 74, Propagation of Radio Waves Below 300 Kilocycles,

p. 101-129 (Pergamon Press Inc., New York, N. Y.

,

1963)

.

5539. On the redefinition of the second and the velocity of light, G. E. Hudson and W. Atkinson.

IEEE Trans. Instr. Meas. IM-12, No. 1, 44-46

(June 1963) . 5540. Unassigned.

5541. On the three-particle scattering operator

in classical gases, J. Weinstock. Physics Letter

3, No. 6, 260-262 (Amsterdam, The Netherlands,

Feb. 1, 1963).

5542. On the vacuum ultraviolet reflectance of evaporated aluminum before and during oxidation,

R. P. Madden, L. R. Canfield, and G. Haas. J. Opt. Soc. Am. 53, No. 5, 620-625 (May 1963).

5543. One man's opinion-a common language (nomen- clature for rubbers), R. D. Stiehler. Rubber World 148, No. 3, 119 (June 1963).

5544. 1, 2, 2-trif luorovinyl phenyl ether and 2,3,4,

5 ,6-pentaf luorophenyl 1 , 2 , 2-trif luorovinyl ether

and their polymers, W. J. Pummer and L. A. Wall. SPE Trans. 3, No. 3, 220-224 (July 1963). 5545. One year trial for new voltmeter standards,

C. Stansburg. Mag. Std. 34, No. 8, 240-241 (Aug. 1963) . 5546. Opening angles of electron-positron pairs,

H. Olsen. Phys. Rev. 131, No. 1, 406-415 (July

I, 1963). 5547. Optical observations of pressures induced in polymers, A. VanValkenberg and J. Powers. J. Appl.

Phys. 34, No. 8, 2433-2434 (Aug. 1963).

5548. Optical studies of the formation and break- down of passive films formed on iron single crystal surfaces in inorganic inhibitor solutions, J. Kruger. J. Electrochem. Soc. 110, No.

6, 654-663 (June 1963).

5549. Optical T-bench method for measurement of optical path difference, F. E. Washer and W. R. Darling. SPE J. 1, No. 6, 211-217 (Aug. -Sept.

1963)

.

5550. Optimum estimators, of the parameters of negative exponential distributions from one or two order statistics, M. M. Siddiqui. Ann. Math.

Stat. 34, No. 1. 117-121 (Mar. 1963). 5551. Osmotic and activity coefficients, of tetra- ethylammonium iodide in aqueous solution at 25°,

R. W. Bower and R. A. Robinson. Trans. Faraday

Soc. 59, No. 488, 1717-1719 (Aug. 1963).

5552. Ozone and sunspots, M. W. Haurwitz and J. London. J. Geophys. Res. 68, No. 3, 795-801

(1963) . 5553. Packing inequalities for circles, P. J. Davis. Michigan Math. J. 10, 25-31 (1963). 5554. Parable of the fisherman, W. J. Youden. Editorial, Phys. Teacher 1, No. 3, 120-121

(Sept. 1963).

5555. Path antenna gain and comments on "properties

of 400 mcps long-distance tropospheric circuits",

W. J. Hartman. Proc. IEEE Correspondence Section

51, No. 5 847-848 (May 1963).

5556. Penetration of protons, alpha particles, and mesons, U. Fano. Ann. Rev. Nuclear Sci. 13, 1-66 (Dec. 1963). 5557. Performance of the barium fluoride film

hygrometer element on radiosonde flights, F. E. Jones. J. Geophys. Res. 68, No. 9, 2735-2751

(May 1 , 1963) . 5558. Periodic heat flow in a hollow cylinder rotating in a furnace with a viewing port, B. A. Peavy and A. G. Eubanks. (Symp. Measurement of Thermal Radiation Properties of Solids, Dayton,

Ohio, Sept. 5-7, 1963), Natl. Aeron. and Space

Admin. SP-31, Session V, Paper 56, p. 553-564

(Dec. 1963).

5559. Perlite for cryogenic insulation, R. H. Kropschot and R. W. Burgess. Advan. Cryog. Eng. 8, Paper G-7, 425-436 (1963). 5560. Phase instability in a tropospheric relay

link, E. C. Barrows. Program and Digest 1963

IEEE Prof. Group. Ant. and Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder,

Colo., p. 52-55 (1963). 5561. Photodisintegration of light nuclei, E. Hayward. Mod. Phys. 35, No. 2, 324-331 (Apr. 1963) . 5562. Photographic dosimetry, megaroentgen range,

W. L. McLaughlin. Encyclopedia of X-rays and Gamma Rays, ed. G. L. Clark, p. 307-309 (Rhein- hold Publ. Corp., New York, N. Y. , 1963).

5563. Photographic, megaroentgen range, W. L. Laughlin. Encyclopedia of X-rays and Gamma Rays,

Ed. G. L. Clark, p. 307-309 (Rheinhold Publ., New York, N. Y. , 1963) . 348
1963

5564. Photometric observations of the airglow

during the IQSY, F. E. Roach. IQSY Instruction

Manual. No. 5 Airglow, Pt . 1 , 1-24 (IQSY Secret

tariat, London, Er-elanri, 1963). 5565. Physical measurements and experiment design,

W. J. Youden. (Colloq. Intern. Centre Natl. Recherche Sci., Aug. -Sept. 1961), Book, Le Plan

d 'Experiences, No. 100, p. 115 (Centre National

de la Recherche Scientif ique , Paris, France.

1963).

5566. Pitfalls in thermal emission studies, W. N. Harrison. (Symp. Measurement of Thermal Radiation Properties of Solids, Dayton, Ohio, Sept.

5-7, 1962). Natl. Aeron. and Space Admin. SP31, Session 1, Paper 1, p. 3-10 (1963). 5567. Planar twin boundary in aluminum, T. H. Orem. Trans. Met. Soc . AIME 227, 786-788 (June 1963)

.

5568. Plasma oscillations with collective correlations, C. M. Tchen. Proc. 6th Intern. Conf. Ionization Phenomena in Gases, Paris, France, July 8-13, 1963, I, 195-199 (P. Hubert Assoc. EURATOM-CEA Centra-d-Etudes Nucleaires de Fon- tenay-aux-Roses, Paris, France, 1963).

5569. Plasma resonances in the upper ionosphere,

W. Calvert and G. B. Goe, J. Geophys. Res. 68, No. 22, 6113-6120 (Nov. 15, 1963).

5570. Plastics, G. M. Kline. Americana Annual, p. 535 (Americana Corp., Chicago, 111., 1963).

5571. Plating specifications, F. Ogburn. Electro- platers Process Control Handb. Ed. D. G. Foulke

and F. E. Crane, Jr., Chapt . 17, p. 406-407

(Reinhold Publ. Co., New York, N. Y. , 1963).

5572. Pointwise in the first biharmonic boundary

value problem, J. H. Bramble and L. E. Payne.

J. Math. Phys. 42, No. 4, 278-286 (Dec. 1963).

5573. Polymer research at the U.S. National Bureau

of Standards, G. M. Kline. Part I. Polimery VII,

No. 12, 444-452 (Dec. 1962), SPE J. 19, No. 3, 278-283 (Mar. 1963).

5574. Polymer research at the U.S. National Bureau

of Standards, G. M. Kline. Part 2, SPE J. 19, No. 4, 403-408 (Apr. 1963). 5575. Polymers and telomers of 4-chloroperf luoro- heptadiene-1, 6, J. E. Fearn and L. A. Wall. SPE

Trans. 3, No. 3, 231-234 (July 1963).

5576. Polymorphism of silver iodide, G. Burley.

Am. Mineralogist 48, 1266-1276 (Nov. -Dec. 1963).

5577. Polymorphism in isopropyl alcohol, G. S. Ross, H. L. Dixon, L. Frolen, and D. J. Termini. Science 141, No. 3585, 1043-1044 (Sept. 1963).

5578. Polymorphism of silver iodide, G. Burley.

An. Mineralogist 48, 1266-1276 (Nov. -Dec. 1963).

5579. Polysulfide sealants, Part I, Formulation

and application properties, D. A. George, L. A. Dunlap, and P. Stone. Adhesives Age 6, No. 2, 32-36 (Feb. 1963).

5580. Polysulfide sealants, Part II, Service properties of 28 formulations, D. A. George, F. Roth, and P. Stone. Adhesives Age 6, No. 3, 35-39 (Mar. 1963).

5581. Portable 2 flow counter for the detection of

a and fi particles in smear samples, L. Costrell,

A. Schwebel, and G. W. Zimmer. Health Phys. 9, No. 6 , 643 (June 1963)

.

5582. Prebunching in electron linacs, J. E. Leiss.

Proc. Conf. Proton Linear Accelerators, Yale

Univ., New Haven, Conn., p. 267-273 (Oct. 1363).

5583. Precision of methods for measuring tensile

strength, stretch, and tensile energy absorption

of paper, T. W. Lashof . Tappi 46, No. 1, 52-59

(Jan. 1963).

5584. Precision of simultaneous measurement

procedures, W. A. Thompson, Jr. J. Am. Stat. Assoc. 58, No. 302, 474-479 (June 1963).

5585. Predicting the performance of tropospheric communication links singly and in tandem, A. D. Barsis, K. A. Norton, and P. L. Rice. Proc. Mountain States Navy Research and Development

Clinic, Raton, N. M. , Sept. 28-29 1961, p. A71-

A104 (Raton, Communications and Electronics

Foundation, 1963).

5586. Preface to special issue on Electromagnetic

Waves in the Earth, J. R. Wait. IEEE Trans. Ant.

Prop. AP-11, 206 (May 1963).

5587. Preparation of latern slides, L. S. Taylor. Health Phys. J. 9, No. 10, 1009-1011 (Oct. 1963).

5588. Present status of our knowledge of atomic transition probabilities, W. L. Wiese. Book,

Proc. Xth Colloquium Spectroscopicum Internationale, Ed. E. R. Lippincott and M. Margoshes,

p. 37-56 (Spartan Books, Wash. D. C. , 1963).

5589. Pressure broadening as a prototype of relaxation, U. Fano. Phys. Rev. 131, No. 1, 259-

268 (July 1, 1963).

5590. Pressure-density-temperature relations of freezing liquid parahydrogen to 350 atmospheres,

R. D. Goodwin and H. M. Roder. Cryogenics 3, No.

1, 12-15 (Mar. 1, 1963).

5591. Pressure induced shifts of infrared lines

due to polar molecules, E. K. Plyler, M. A. Hirshfeld, and J. H. Jaffe. J. Chem. Phys. 38,

No. 1, 257-258 (Jan. 1963).

5592. Pressure measurements in cryogenic systems,

P. Smelser. Advan. Cryog. Eng. 8, Paper F-7, 378-

386 (1963). 5593. Primary processes in the photolysis of ethyl

nitrate, R. E. Rebbert . J. Phys. Chem. 67, No. 9, 1923-1925 (Sept. 1963).

5594. Problems and prospects in electrical properties of materials, J. L. Dalke. Proc. Mountain States Navy Research and Development

Clinic, Raton, N. M. , Sept. 28-29, 1961, p. D7-

D14 (Raton Communications and Electronics Foundation, 1963).

5595. Problems in the application of norms of external radiation, L. S. Taylor. Symp. Personnel Dosimetry Techniques for External Radiation,

Madrid, Spain, Apr. 1-5, 1963, p. 35-47 (1963). 5596. Proceedings of the Xth colloquium spectro- scopicum internationale, E. R. Lippincott and M. Margoshes, Editors. Spartan Books, Wash. D. C.

(19< 5). 5597. Profiles of Stark broadened Balmer lines in

a hydrogen, W. L. Wiese, D. Paquette, and J. E. Solarski. Phys. Rev. 129, No. 3, 1225-1232 (Feb. 1963). 5598. Programmed maneuver- spectrum fatigue test of aircraft beam specimens, L. Mordfin and N. Halsey. Am. Soc. Testing Mater. Spec. Tech. Publ.

338, 251-272 (1963). 5599. Projection X-ray microscopy of roofing

materials, S. B. Newman and S. H. Greenfeld.

Mater. Res. Std. 3, No. 11, 893-898 (Nov. 1963).

5600. Properties of a silica-reinforced polymer

for dental restorations, R. L. Bowen. J. Am. Dental Assoc. 66, No. 1, 57-64 (Jan. 1963).

5601. Properties of semiconductors, H.P. R. Frederikse. American Institute of Physics Handb. 2d edition, Sect. 9e, p. 9-45-9-63 (1963).

5602. Proposed experiment to measure effects of roughness on the dose rate from fallout radiation

C. Eisenhauer. Heal 9, 503-506 (1963).

349
1963

5603. P-p-T values for neon from 27° to 300°K for pressures to 200 atmospheres using corresponding

states theory, R. D. McCarty, R. B. Stewart, and

K. D. Timmerhaus. Advan. Cryog. Eng. 8, Paper

C-3, 135-145 (1963). 5604. Q meter measurements up to 260 MHz, M. G. Broadhurst. (Proc. Conf. Electric Insulation),

1963 Annual Report Natl.. Acad. Sci.-Natl. Res. Council Publ. 1141, p. 77-80 (1963).

5605. Quadrupole coupling constants from the microwave spectrum of hydrazoic acid, R. A. Forman and

D. R. Lide, Jr. J. Chem. Phys. 39, No. 4, 1133-

1134 (Aug. 15, 1963).

5606. Quantitative metallographic evaluations of graphitic microstructures , L. L. Wyman and G. A. Moore. Modern Castings AFS 43, No. 1, 7-16 (Jan. 1963) . 5607. Quantities and units for dosimetry in diagnostic radiology, H. O. Wyckoff. Symp. under

the auspices of the Division of Radiological

Health, U. S. Public Health Service, Wash.,

D. C. , Reduction of Patient Dosage from Diagnostic Radiology, Ed. M. L. Janower, p. 5-9 (Charles

C. Thomas Publ., Springfield, 111. , 1963).

5608. Quasi-equilibrium theory of mass spectra,

H. M. Rosenstock and M. Krauss. Book, Mass Spectrometry of Organic Ions, p. 1-64 (Academic

1963). tudy < J. Book, Advances in Gla: 46 (Plenum Press Inc. 5610. Radiation and the Taylor. Radiology 80, 5611. Radiation detecto;

No. 3558, 899 (Mar. 8 5612. Radiation effects

Piermarini and S. Block.

;s Technology, Pt. 2, p. < New York, N. rid v live 1963).

L. S. No. 3, 358-368 (Mar. 1963).

s, L. Costrell. Science 139, 1963). on man, L. S. Taylor. Nucleonics 21, No. 3, 58-60 (Mar. 1963).

5613. Radiation impedance of a source near reflectors, R. V. Waterhouse. J. Acoust. Soc. Am. 35,

No. 8, 1144-1151 (Aug. 1963).

5614. Radiation-induced polymerization at high

pressures, L. A. Wall and D. W. Brown. J. Polymer

Sci. C2, No. 4, 1151-1160 (1963). 5615. Radiation-induced polymerization of high pressure of n-tetradecaf luoroheptene-1 ; 1,1,2-

trif luorovinyl phenyl ether; and 1,2,3,4,5-

pentaf luorophenyl 1 , 1 , 2-trif luorovinyl ether,

D. W. Brown and L. A. Wall. SPE Trans. 3, No. 4, 300-308 (Oct. 1963).

5616. Radiation-induced polymerization of propylene

at high pressure, D. W. Brown and L. A. Wall. J. Phys. Chem 67, No. 5, 1016-1019 (May 1963).

5617. Radiation transfer problems in the rocket ultra-violet lines, C. Pecker and R. N. Thomas.

J. Quant. Spectry. Radiative Transfer 3, No. 2, 163-165 (June 1963).

5618. Radio astronomy, L. M. Branscomb. American

Institute of Physics Handb. 2d edition, p. 6 - 229—2- 231 (1963) 5619. Radio noise anomalies in August 1958, C. A. Samson. J. Geophys. Res. 68, 2719-2726 (May 1, 1963).

5620. Radio propagation quality in, the North Atlantic Area 1953-1960, M. E. Nason. AGARDograph

59, The Effect of Disturbances of Solar Origin on

Communications, ed. G. J. Gassman, p. 287-291 (Pergamon Press Inc., London, England, 1963).

5621. Radio spectrum of SH, H. E. Radford and M. Linzer. Phys. Rev. Letters 10, No. 10, 443-444

(May 1963).

5622. Radio star scintillations and spread-F echoes,

H. J. A. Chivers. J. Atmospheric and Terrest

.

Phys. 25, No. 8, 468-473 (Aug. 1963).

5623. Radio wave reflections at a continuously stratified plasma with collisions proportional to energy and arbitrary magnetic induction, J. R. Johler. Proc. Intern. Conf. Ionosphere, London,

1962, p. 436-445 (Institute of Physics and the Physical Society, London, England, 1963).

5624. Radiolysis of methane, P. J. Ausloos and S. G. Lias. J. Chem. Phys. 38, No. 9, 2207-2214 (May 1, 1963).

5625. Radiolysis of propane-d 8 in the presence of organic compounds other than hydrocarbons,

I. B. Sandoval and P. J. Ausloos. J. Chem.

Phys. 38, No. 10, 2454-2460 (May 15, 1963).

5626. Radiometry, M. M. Reynolds, R. J. Corruccini,

M. M. Fulk. and R. M. Burley. American Institute

of Physics Handb. 2d edition, Sect. 6K, p. 6-153- 6-172 (1963). 5627. Radiowave scattering in the ionosphere, K. L. Bowles. Advan. Electron. Electron Phys. 19, 55-

176 (1963).

5628. Ranking laboratories by round-robin tests,

W. J. Youden. Mater. Res. Std. 3, No. 1, 9-13

(Jan. 1963).

5629. Reaction rates for the formation of He 2 + and

Ne 2+

, E. C. Beaty and P. L. Patterson. Book, Comptes Rendus de la VI Conference Internationale

sur les Phenomenes D' Ionisation dans les Gaz, ed.

P. Hubert and E. Cremieu-Alcan III, 289-293

(S.E.R.M.A., Publ. Co., Paris, France, 1963).

5630. Recent advances in cryogenic engineering, Cryogenic Engineering Laboratory, NBS, Boulder, Chemistry 36, 8-15 (Oct. 1963).

5631. Recent developments in neutron source stand- ardization, R. S. Caswell, R. H. Noyce, S. B. Garfinkel, and E. R. Mosburg, Jr. (Proc. Symp. Neutron

Detection, Dosimetry and Standardization Interna- tional Atomic Energy Agency, Atomic Energy Research Establishment, Harwell, England, Dec. 10-14, 196 2), Book, Neutron Dosimetry II 547-555

(International Atomic Energy Agency, Vienna, 1963).

5632. Recent progress in cryogenic engineering,

R. B. Scott. Proc. Mountain States Navy Research

and Development Clinic, Raton, N. M. , Sept. 28-

29, 1961, p. D1-D4 (Raton, Communications and Electronics Foundation, 1963).

5633. Regulation of ionization gauge emission cur- rent to better than 0.05%, K. W. Yee and R. J. Carpenter. Rev. Sci. Instr. 34, No. 10, 1101-1103

(Oct. 1963).

5634. Relation of partial (110) pole figures, to thickness and microstructure of electrodeposited

copper, F. Ogburn and C. J. Newton. J. Electrochem. Soc. 110, No. 11, 1148-1150 (Nov. 1963).

5635. Relation of solar active regions at central meridian passage to ionospheric disturbance,

C. S. Warwick and J. V. Lincoln. AGARDograph 59, The Effect of Disturbances of Solar Origin on Communications, ed. G. J. Gassmann, p. 229-233

. (Pergamon Press Inc., London, England, 1963).

5636. Remarks on coincidence experiments with visible light, Z. Bay and P. S. Farago. Proc. Royal Soc. Edinburgh, Sec. A. Math, and Phys. Sci. LXVI, Pt. 11, No. 10, 111-115 (Royal Society of Edinburgh, Edinburgh, Scotland, 1963).

350
1963

5637. Remarks presented at panel discussion on modulation, J. L. Auterman. Proc. Mountain

States Navy Research and Development Clinic,

Raton, N. M. Sept. 28-29, 1961, p. A131-A132

(Raton, Communications and Electronics Foundation, 1963).

5638. Report of Committee E-2 on Emission Spectroscopy, R. E. Michaelis. Am. Soc. Testing Mater.

Proc. 63, 456 (1963).

5639. Report on standard samples, reference samples, reference samples, and high-purity materials for spectrochemical analysis, R. E. Michaelis. ASTM Spec. Tech. Publ. 58-E (1963). 5640. Report on sugars and sugar products, E. J. McDonald. J. Assoc. Official Agri. Chem. 46, 35

(1963).

5641. Required signal-to-noise ratios, carrier

power, and bandwidth to achieve a given per- formance for multichannel radio communication

systems, E. F. Florman and J. J. Tary. Proc. Mountain States Navy Research and Development Clinic,

Raton, N. M. , Sept. 28-29, 1961, p. A135-A140

(Raton, Communications and Electronics Foundation, 1963).

5642. Requirement for a Solar Observatory within

the National Bureau of Standards, Radio and Radar Astronomy Report of the Committee on Sci- ence and Astronautics, C. G. Little. U.S. House

of Representatives, Eighty-Seventh Congress, 2d Session, December 12, 1962, p. 12-19 (Wash.

D. C, 1963).

5643. Residual range and range rate errors due to the troposphere, E. C. Barrows. Proc. Conf. Tropospheric Refraction (Dec. 1963).

5644. Resionography with 8-A X-rays, S. B. Newman.

(Symp. Resionographic Methods), Am. Soc. Testing

Mater. Spec. Tech. Publ. No. 348 (1963).

5645. Resurgence of solar and geomagnetic activity

in September and October 1963, A. H. Shapley. IQSY Notes 5, 10 (Dec. 1963).

5646 . Review of mode theory of radio propagation

in terrestrial waveguides, J. R. Wait. Revs. Geophys. 1, No. 4, 481-505 (Nov. 1963).

5647. Review of recent developments of high tem- perature thermocouples, P. D. Freeze. Am. Soc. Mech. Engrs. Paper No. 63-WA-212 (Nov. 1963).

5648. Review of reviews of atomic spectroscopy,

W. F. Meggers. Appl. Opt. 2, No. 7, 657-663

(July 1963).

5649. Rotation-vibration constants of acetylene,

E. K. Plyler, E. D. Tidwell, and T. A. Wiggins.

J. Opt. Soc. Am. 53, No. 5, 589-593 (May 1963). 5650. Rotational, vibrational, and electronic

energy transfer in the fluorescence of nitric

oxide, H. P. Broida and T. Carrington. J. Chem.

Phys. 38, No. 1, 136-147 (Jan. 1963).

5651. Rubber and rubber products, W. P. Tyler and

M. Tryon. Book, Industrial and Natural Products

and Noninstrumental Methods, 6th Ed., Standard

Methods of Chemical Analysis IIB Chapt. 43, p. 2146-2226 (D. Van Nostrand Co., Inc., New York, N.Y. , 1963).

5652. Scheme for obtaining integral and fractional multiples of a given radiance, D. E. Erminy. J. Opt. Soc. Am. 53, 1448-1449 (Dec. 1963).

5653. Scientific information activities at the National Bureau of Standards, W. R. Tilley. (53d Special Libraries Assoc. Conv., Metals

Division, May 29, 1962, Wash., D. C), Spec. Lib.

p. 29-34 (Jan. 1963).

5654. Shear strength of beams without web rein- forcement containing deformed bars of different

yield strengths, R. G. Mathey and D. Watstein.

J. Am. Concrete Inst. 60 (Title No. 60-13), No.

2 183-207 (Feb. 1963).

5655. Search for a slow component in alpha ionization, Z. Bay and R. M. Pearlstein. Phys. Rev.

130, No. 1, 223-227 (Apr. 1963).

5656. Shifts and widths of some stark broadened

oxygen lines in an arc plasma, W. L. Wiese and P. W. Murphy. Phys. Rev. 131, No. 5, 2108-2115

(Sept. 1963).

5657. Short-duration visible afterglow in helium,

A. L. Schmeltekopf and H. P. Broida. J. Chem.

Phys. 39, 1261-1268 (Sept. 1963).

5658. Signal-to-noise characteristics of some typical systems and their comparisons, H. Akima.

Proc. Mountain States Navy Research and Development Clinic, Raton, N. M. , Sept. 28-29, 1961, p. A125-A130 (Raton, Communication and Electronics

Foundation, 1963).

5659. Size-dependent spin lattice relaxation time,

P. H. Fang. Phys. Rev. 129, No. 4, 1548-1549

(Feb. 1963).

5660. Solar activity, J. V. Lincoln. IQSY Instruc- tion Manual. No. 2. Report of Sudden Ionospheric

Disturbances, Suppl., p. 1-11 (IQSY Secretariat,

London, England, 1963).

5661. Solar particles and interplanetary fields,

C. S. Warwick. Book, Advances in the Astronautical Sciences 13, 666-681 (Western Periodicals,

Calif., 1963).

5662. Solid formation in flowing cryogenic fluids,

D. B. Chelton, B. W. Birmingham, and J. W. Dean. Advan. Cryog. Eng. 8, Paper E-ll, 311-314 (1963). 5663. Solid state detectors for beta-ray spectroscopy below 4.2°K, J. Chin, A. T. Hirshfeld, and

D. D. Hoppes. Rev. Sci . Instr. 34, No. 12, 1258-

1259 (Nov. 1963).

5664. Solid-State Physics Section 9, H. R. R. Frederikse, Editor, p. 9-1-9-160 American

Institute of Physics Handb. 2d edition (1963). 5665. Some applications of vacuum distillation

of metals to radiochemical separations, J. R. DeVoe and W. W. Meinke. Anal. Chem. 35, No. 1, 2-5 (Jan. 1963).

5666. Some aspects of the mechanical properties

of high polymers, H. Leaderman. (Proc. Conf. Mechanical Properties of Wood, Univ. of Calif., Berkeley, Calif., Aug. 27-Sept . 1, 1962), Book, The Mechanical Behavior of Wood, p. 43-83 (1963). 5667. Some causes of resonant frequency shifts in atomic beam machines. I. Shifts due to other frequencies of excitation, J. H. Shirley. J. Appl. Phys. 34, pt. I, No. 4, 783-788 (Apr. 1963).

5668. Some causes of resonant frequency shifts in atomic beam machines. II. The effect of slow frequency modulation on the Ramsey line shape,

J. H. Shirley. J. Appl. Phys. 34, Pt. I, No. 4, 789-791 (Apr. 1963).

5669. Some characteristics of a simple cryopump,

L. O. Mullen and R. B. Jacobs. (Trans. Natl.

Symp. Vacuum Technologists 1962), Am. Vacuum

Soc. 9, 220-226 (1963).

5670. Some derivatives of 2, 2

' (phenylimino)

diethanol, A. Cohen and R. S. Tipson. J. Med. Chem. 6, 822-824 (Nov. 1963).

5671. Some early results from the ionospheric top- side sounder satellite, R. W. Knecht and T. E. VanZandt. Nature 197, No. 4868, 641-644 (Feb. 1963).

351
1963

5672. Some factors affecting the creep behavior of an age-hardenable alloy, W. D. Jenkins and W. A. Willard. Am. Soc. Metals Trans. Quart. 56, No. 3, 427-441 (Sept. 1963).

5673. Some idealized solutions for choking, two- phase flow of hydrogen, nitrogen and oxygen,

R. V. Smith. Advan. Cryog. Eng. 8, 563-573 (1963). 5674. Some impulse sparkover voltages for a 200 cm sphere gap, H. N. Cones. IEEE Component Parts

Conf., Paper No. CP63-929 (June 1963).

5675. Some low temperature properties of materials,

R. H. Kropschot. Proc. Mountain States Navy Re- search and Development Clinic, Raton, N. M.

,

Sept. 28-29, 1961, p. D5-D6 Foundation, 1963).

5676. Some physical properties of organic denture base materials, J. B. Woelfel, G. C. Paffenbarger, and W. T. Sweeney. J. Am. Dental Assoc. 67, No.

4, 489-504 (Oct. 1963).

5677. Some recent developments in noble metal

thermocouples, L. 0. Olsen. Am. Soc. Auto. Engrs. Paper No. 750A, p. 10 (Sept. 1963).

5678. Some results of a new method for obtaining

ionospheric N(h) profiles and their bearing on the the structure of the lower F region, A. K. Paul

and J. W. Wright. J. Geophys . Res. 68, No. 19, 5413-5420 (Oct. 1, 1963); (Proc. NATO Advanced

Study Institute, Skeikampen, April 17-26, 1963), Book, Electron Density Distribution in the Ionosphere and Exosphere, p. 105-115 (North Holland Publ. Co., Amsterdam, The Netherlands, 1963).

5679. Some stochastic processes in polymer systems,

J. Mazur. J. Chem. Phys. 38 No. 1, 193-201 (Jan.

I, 1963).

5680. Special techniques for use in sugar analysis,

V. R. Dietz and F. G. Carpenter. Cane Sugar Handbook, Ed. G. P. Meade, 9th ed., p. 605-619 (John Wiley and Sons Inc., New York, N. Y., Aug. 1963).

5681. Spectroradiometry by means of modified

spectrophotometers, H. K. Hammond. Appl. Opt. 2, No. 11, 1207-1208 (Nov. 1963).

5682. Spectroscopic absorption of NO in crystalline and liquid krypton, G. L. Pollack and H. P. Broida. J. Chem. Phys. 38, No. 8, 2012-2015

(Apr. 15, 1963).

5683. Spectrum analysis of extremely low frequency variations of quartz oscillators, W. R. Atkinson,

L. Fey, and J. Newman. Proc. IEEE 51, No. 2, 379.

(Feb. 1963).

5684. Spectrum of ER3+ in LaCl 3 , J. C. Eisenstein.

J. Chem. Phys. 39, No. 9, 2128-2133 (Nov. 1, 1963).

5685. Spectrum of Nd3+ in LaCl 3 , J. C. Eisenstein.

J. Chem. Phys. 39, No. 9, 2134-2140 (Nov. 1, 1963).

5686. Spherical mirror Fabry-Perot resonators, R.

W. Zimmerer. Proc. IEEE II, No. 5, 371-379 (Sept. 1963).

5687. Stable 6300 A auroral arcs in mid-latitudes,

F. E. Roach and J. R. Roach. Planetary Space Sci.

II, 523-545 (May 1963).

5688. Stability relations of dravite, a tourmaline,

C. R. Robbins and H. S. Yoder, Jr. Annual Re- port of the Director of the Geophys. Lab., 1961- 1962 (Carnegie Inst, of Washington, Wash. D. C.

,

Feb. 1963).

5689. Standard potential of the silver-silver

chloride electrode and activity coefficients of hydrochloric acid in aqueous methanol (33.4 Wt.

7") with and without added sodium chloride at

25°, R. G. Bates and D. Rosenthal. J. Phys. Chem. 67, No. 5, 1088-1090 (May 1963).

5690. Standardization from the national viewpoint,

A. T. McPherson. SES Proc. 12th Annual Meeting,

Sept. 1963, Wash. D. C, p. 68-72 (1963). 5691. Standards and contact lenses, A. G. McNish. C0NTACT0 7, No. 9 4-5 (Nov. -Dec. 1963). 5692. Standards for dental radiographic film, G. C. Paf fenbarger. Mag. Std. 34, No. 5, 148 (May 1963).

5693. Standards for the 70s, W. A. Wildhack. Ind. Res. 5, No. 3, 15-20 (Mar. 1963).

5694. Stark energy levels of symmetric-top molecules, J. H. Shirley. J. Chem. Phys. 38, 2896-

2913 (June 1963).

5695. Statistical computation of configuration and free volume of a polymer molecule with solvent interaction, J. Mazur and L. Joseph. J. Chem.

Phys. 38, No. 6, 1292-1300 (Mar. 15, 1963).

5696. Statistical interpretations, W. J. Youden.

Book, Standard Methods for Chemical Analysis 6th

edition, IIA, Chapt. 16, p. 318-325 (D. Van. Nostrand Co., Princeton, N. J., 1963).

5697. Statistics in chemical analysis, W. J. Youden. Analytical Chemistry Handb. Sec. 14, p. 14-1-14-9 (McGraw-Hill Book Co., Inc., New York N. Y.

,

1963).

5698. Statistics of irreversible termination in homogeneous anionic polymerization, B. D. Coleman, F. Gornick, and G. H. Weiss. J. Chem. Phys. 39,

No. 12, 3233-3239 (Dec. 15, 1963).

5699. Status of frequency and time control, W. D. George. Frequency 1, No. 7, 27-29 (Nov. -Dec.

1963).

5700. Status of sugar color and turbidity measurements, F. G. Carpenter and V. R. Deitz. J. Am. Soc. Sugar Beet Technologist 12, 326-347 (1963).

5701. Stellar and galactic magnetism, L. M. Branscomb. American Institute of Physics Handb. 2d edition, p. 5-289—5-291 (1963).

5702. Strain gage research at the National Bureau

of Standards, R. L. Bloss. (ISA 18th Annual Conference and Exhibit, Chicago, 111., Sept. 9-12, 1963), ISA Preprint 48.4.63 (1963). 5703. Strain release in complete dentures, J. B. Woelfel, G. C. Paf fenbarger. and W. T. Sweeney.

J. Am. Dental Assoc. 67, No. 2, 321 (Aug. 1963).

5704. Stratospheric moisture measurements using infrared spectroscopy, D. M. Gates. Proc. Symp. Humidity and Moisture (1963).

5705. Stress-corrosion cracking of type 304 stainless steel at 455 to 615 F, H. L. Logan, M. J. McBee, and M. Romanoff. Mater. Res. Std. 3, No. 8, 635-639 (Aug. 1963).

5706. Stress-strain relationships in yarns subjected to rapid impact loading. 10. Stress-strain

curves obtained by impact with rifle bullets,

J. C. Smith, C. A. Fenstermaker, and P. J. Shouse. Textile Res. J. 33, No. 11, 919-934 (Nov. 1963).

5707. Structure beyond the ionization limit in inelastic electron scattering in the rare gases,

C. E. Kuyatt and J. A. Simpson. Proc. 6th Intern.

Symp. Ionization Phenomena in Gases IA11, 33-35

(Paris, 1963).

5708. Studies at NBS of the platinum-6$, rhodium vs. platinum-30fo rhodium thermocouple—a preliminary

report, G. W. Burns. (Proc. SAE Meeting, Los Angeles, Calif., Sept. 23-27, 1963). SAE Preprint No. 750B (1963). 5709. Studies in scientific and engineering manpower, Part I. Patterns of utilization of sci- entific and engineering manpower in the United

States and certain foreign countries. Part II. Trends in salaries of scientists and engineers,

M. S. Green. 1948-1962, U. S. Department of 352
1963

Commerce, Office of the Assistant Secretary of Commerce for Science and Technology Staff Report: 63-1 (Oct. 1963).

5710. Studies in the geomagnetic micropulsation

frequency range, W. H. Campbell. IEEE Intern.

Conv. Record 11, Pt . 9, 25-28 (Mar. 25-28, 1963).

5711. Studies of within-the-horizon propagation

at 9300 Mc, A. P. Barsis, A. F. Barghausen, and R.

S. Kirby. IEEE Trans. Ant. Prop. AP-11, No. 1, 24-38 (Jan. 1963).

5712. Studies on the tungsten-rhenium thermocouple

to 2000° C, D. B. Thomas. Proc. 18th Annual ISA

Conf. and Exhibit, Sept. 9-12, 1963, Chicago,

111., Preprint 57.3.63, pp. 67 .3 .63-1—57 .3 .63-9

(1963). 5713. Studying the lunar tidal variations in the D region of the ionosphere by means of a very- low-frequency phase observations, A. H. Brady

and D. D. Crombie. J. Geophys. Rev. 68, No. 19, 5437-5442 (Oct. 1, 1963).

5714. Sum rules relating coherent X-ray scattering

data to tne diamagnetic nuclear shielding con- stant and to the self-energy of the charge dis- tribution of the scatterer, J. N.Silverman and Y. Obata. J. Chem. Phys. 38, No. 5, 1254-1255

(1963). 5715. Summary of Sessions I and II of the Symposium

on X-ray and Electron Probe Analysis, R. E. Michaelis. ASTM Spec. Tech. Publ. 349 (1963). 5716. Summary report on activities of spacewarn

network, A. H. Shapley. COSPAR Info. Bull. No.

13, p. 17-21 (Jan. 1963).

5717. Summer school for theoretical physics, R. M. Gallet. (In Grenoble, Universite. Les Houches),

Geophys. Exterieur, p. 551-590 (Gordon and

Breach, New York, N. Y. , 1963).

5718. Survey of Rb 8S /Rb 87 ratios in minerals, w. R. Shields, E. L. Garner, C. E. Hedge, and S. S. Goldich. J. Geophys. Res. 68, No. 8, 2331-2334

(Apr. 1963).

5719. Sychronization of two remote atomic time

scales, J. A. Barnes and R. L. Fey. Proc. IEEE 51, No. 11, 1965 (Nov. 1963).

5720. Synoptic variations and vertical profiles of large-scale ionospheric irregularities, R. G. Merrill, R. S. Lawrence, and N. J. Roper. J. Geophys. Res. 68, No. 19, 5453-5459 (Oct. 1, 1963).

5721. Syntactic integration carried out mechanically, I. Rhodes. Inform. Storage and Retrieval 1, 215-219 (1963).

5722. Synthesis and stability of bismutotantalite

,

stibiotantalite and chemically similar AB04 com- pounds, R. S. Roth and J. L. Waring. Am. Min- eralogist 48, Nos. 11 and 12, 1348-1356 (Nov.-

Dec. 1963).

5723. Synthesis of perf luorostyrene and (2, 2- dif luorovinyl) perf luorobensene (a -hydroheptaf luorostyrene) A general method for synthesis of highly fluorinated styrenes, F. M. Antonucci and

A. Wall. SPE Trans. 3, No. 3, 225-230 (July 1963).

5724. Technical training in the weights and measures program, M. W. Jensen. Southern Weights and Measures News Letter 14, No. 12, 2-5 (Dec. 1962); Scale J. 49, No. 4, 4-5 (Jan. 1963).

5725. Temperature control of the structure and variations of the quiet ionosphere, J. W. Wright.

Proc. Intern. Conf. Ionosphere, July 1962, p. 19-25 (Institute of Physics and the Physical

Society, London, England, 1963).

5726. Temperature measurements below 1000°K, J. L. Riddle. (Symp. Measurement of Thermal Radiation

Properties of Solids, Dayton, Ohio, Sept. 5-7, 1963), Natl. Aeron. and Space Admin. SP-31, Ses- sion I, Paper 2, p. 11-12 (Dec. 1963).

5727. Temperature measurements in cryogenic engineering, R. J. Corruccini. Advan. Cryog. Eng. 8, Paper F-l, 315-333 (1963). 5728. Temperature, pressure, heat, and entropy

change of transition, fusion, and vaporization,

D. D. Wagman, W. H. Evans, I. Halow, and R. M. Dudley. American Institute of Physics Handb. 2d edition, Sect. 4 j , p. 4-170-4-216 (1963). 5729. Temperature scales, thermocouples, and resistance thermometers, H. F. Stimson, J. E. Swindells, and R. E. Wilson. American Institute

of Physics Handb. 2d edition, Sect. 4a, p. 4-2- 4-21 (1963).

5730. Ten kilocycle pound-type klystron stabilizer,

H. E. Radford. Rev. Sci. Instr. 34, No. 3, 304-

305 (Mar. 1963).

5731. Ten years weathering data on aluminum alloys,

W. H. Ailor, Jr., and F. M. Reinhart. Materials

Protect. 2, No. 6, 30-36 (June 1963).

5732. The adsorption of methane and nitrogen on silica gel, synthetic zeolite, and charcoal,

A. J. Kidnay and M. J. Hiza. J. Phys. Chem. 67, 1725-1727 (Aug. 1963).

5733. The association of plane-wave electron- density irregularities with the equatorial

electrojet, K. L. Bowles. J. Geophys. Res. 68,

No. 9, 2503-2525 (May 1, 1963).

5734. The atomic spectra of the rare earths; their presence in the sun, C. E. Moore. Appl. Opt. 2, No. 7, 665-674 (July 1963).

5735. The aurora and trapped electrons, F. E. Roach.

J. Geophys. Res. 68, No. 4, 1015-1021 (Feb. 1963).

5736. The basis of the functional assumption in the theory of the Boltzmann equation, M. S. Green

and R. A. Piccirelli. Phys. Rev. 132, No. 3, 1388

(Nov. 1963).

5737. The calibration of inductive voltage dividers

and analysis of their operational characteristics,

T. L. Zapf . ISA Trans. 2, No. 3, 195-200 (July 1963).

5738. The characterization of large single crystals

by high-voltage X-ray Laue photographs, H. S. Peiser and E. P. Levine. (Proc. 11th Annual

Conf. Application of X-ray Analysis, Aug. 1962),

Book, Advances in X-ray Analysis 6, 158-163

(Plenum Press Inc., New York, N. Y. , 1963).

5739. The collaborative test, W. J. Youden. J. Assoc. Offic. Agric. Chem. 46, 55-62 (Feb. 1963).

5740. The conjugacy of magnetic disturbance variations, G. M. Boyd. J. Geophys. Res. 68, No. 4, 1011-1013 (Feb. 13, 1963).

5741. The contact properties of thin films on

semiconductors, T. Higier and G. G. Harman. Contact Symp. Proc. Univ. of Maine (Mar. 20, 1963).

5742. The correlation of experimental pressure- density temperature and specific heat data for parahydrogen, H. M. Roder, L. A. Weber, and R. D. Goodwin. (Proc. XI Intern. Congress Refrigeration, Munich, Germany, Aug. 1963), Prog. .Refrig.

Sci. Technol. 1, 187-191 (1963). 5743. The day-to-night ratio of cosmic noise absorption during polar cap absorption events,

C. S. Gillmor, Jr. J. Atmospheric Terrest.

Phys. 25, 263-266 (May 1963).

353
1963

5744. The decoration of dislocations in aluminum

oxide, H. E. Bond and K. B. Harvey. J. Appl.

Phys. 34, No. 2, 440-441 (Feb. 1963).

5745. The direct determination of the crystal structure of NaB(OH) 4

- 2H 2 0, S. Block and A. Perloff. Acta Cryst. 16, No. 12, 1233-1238 (Dec. 1963).

5746. The effect of geomagnetic crochet on cosmicray intensity, C. S. Warwick. J. Geophys. Res.

68, No. 10, 3303-3304 (May 1963).

5747. The effect of hydrostatic pressure on the crystallization kinetics of natural rubber,

G. M. Martin and L. Mandelkern. J. Appl, Phys.

34, No. 8, 2312-2317 (Aug. 1963).

5748. The effective area of a guarded electrode,

J. I. Lauritzen, Jr. (Proc. Conf. Electric

Insulation), 1963 Annual Report, Natl. Acad.

Res. Council Publ. 1141, p. 67-70 (1963).

5749. The electrophoretic mobility of asphaltenes

in nitromethane, J. R. Wright and R. R. Minesinger. J. Colloid Sci. 18, 223-236 (Mar. 1963).

5750. The energy environment in which we live,

D. M. Gates. Am. Scientist 51, No. 3, 327-348

(Sept. 1963).

5751. The error rate in a multiple-frequency shift system and the output signal/noise ratio in a frequency modulation and a pulse-code-modulation/

frequency-shift system, H. Akima. Intern. Conf. Satellite Communication, London, Nov. 22-28, 1963 p. 305-309, (Programme and Conference

Digest, London, England 1963).

5752. The establishment and maintenance of the unit of voltage at the NBS Boulder Laboratories,

B. A. Wickoff . ISA 1963 Proc. Paper No. 28.2.63

(1963). 5753. The Fisheriana revolution in the technique

of experimentation, W. J. Youden. Estadistica

(Inter American Statistical Institute), 21, No.

80, 524-527 (Sept. 1963).

5754. The formation and oxidation of high-area

carbon films, V. R. Deitz and McFarlane. Proc. Fifth Carbon Conference, II, 219-232 (Pergamon

Press, Inc., London England, 1963).

5755. The formulation of F. D. I. specifications,

G. C. Paffenbarger. Intern. Dental J. 13, No.

1, 133-134 (Mar. 1963).

5756. The F-region seasonal anomaly, J. W. Wright.

J. Geophys. Res. 68, No. 14, 4379-4381 (July 15, 1963).

5757. The gamma-ray distribution from oriented

cerium-141 and its application to thermal contact

at low temperature, J. F. Schooley and D. D. Hoppes. (Proc. 8th Intern. Conf. Low Temperature

Physics, Queen Mary College, London, England,

Sept. 1963), Book, Low Temperature Physics, Ed.

R. 0. Davies, pp. 435-436 (Butterworth Inc., Washington, D. C, 1963).

5758. The gas phase radiolysis of propane. Effect

of pressure and added inert gases, S. G. Lias,

P. Ausloss, and I. B. Sandoval. Discussions Faraday Soc. No. 36, p. 66-74 (1963). 5759. The heat capacity of linear and branched

polyethylene, E. Passaglia and H. K. Kevorkian.

J. Appl. Polymer Sci. 7, No. 1, 119-132 (Jan. 1963).

5760. The heats of solution and oxidation of sul- fur dioxide, W. H. Johnson and S. Sunner. Acta

Chem. Scand. 17, 1917-1924 (1963). 5761. The importance of environment in fatigue

failure of metals, J. A. Bennett, W. L. Holshouser, and H. P. Utech. Book, Fatigue of Aircraft

Structures, p. 1-18 (Pergamon Press, Inc., London, England, 1963).

5762. The ionosphere, A. H. Shapley. U. S. Infor- mation Agency Voice of America Forum Series on Space Science, Lecture No. 7, 6 pages (1963).

5763. The infrared spectra, structures and thermo- dynamics of gaseous LiO, Li 20 and Li 20 2 , D. E. Mann, D. White, K. S. Seshadri, D. F. Dever, and

M. J. Linevsky. J. Chem. Phys. 39, No. 10, 2463-

2473 (Nov. 1963).

5764. The intensity and spectral, distribution of scattered radiation from Co60 sources, B. Petree

and J. C. Humphreys. Radiology 80, No. 1, 120

(Jan. 1963).

5765. The ionization constant of m-nitrophenol

from 5 to 50°, R. A. Robinson and A. Peiperl.

J. Phys. Chem. 67, No. 12, 2860-2861 (Dec. 1963).

5766. The ionization constants of o-nitro- phenol

and 4-nitro-m-cresol from 5 to 60°, R. A. Robinson and A. Peiperl. J. Phys. Chem. 67, No. 8, 1723-1724 (Aug. 1963).

5767. The kinetics of positive ion desorption from polycrystalline tungsten and rhenium, M. D. Scheer and J. Fine. (Proc. Intern. Symp. Conden- sation and evaporation of solids, Dayton, Ohio, Sept. 12-14, 1962), Book, Condensation and Evaporation of solids, Ed. E. Rutner, P. Goldfinger, and J. P. Huth, Paper 20, pp. 327 (Gordon and Breach, New York, N. Y. 1963).

5768. The large 50 Mc/s dipole array at Jicamarca

radio observatory, G. R. Ochs. Program and Digest

1963 IEEE Prof. Group Ant. and Prop Symp. Space Telecommunications, July 9-11, 1963, Boulder

Colo., p. 237-241 (July 1963).

5769. The lifetime and movement of artificially

produced electron-clouds observed with spaced

ionosondes, J. W. Wright. J. Geophys. Res. 68,

No. 10, 3011-3020 (May 15, 1963).

5770. The location of the irregularities responsible

for ionospheric scintillation of a radio source,

H. J. A. Chivers. Proc. Physics Ionosphere,

London, 1962, p. 258-266 (The Institute of Physics and the Physical Society, London, England, 1963).

5771. The lower critical field in the Ginzburg- Landau theory of superconductivity, J. L. Harden

and V. Arp. Cryogenics 3, 105-108 (June 1963).

5772. The measurement of pH, R. G. Bates and V. E. Bower. Handb. Analytical Chemistry, Ed. L. Meites, Sect. 11, p. 1-14 (McGraw-Hill Book Co. Inc., New York, N. Y. , 1963).

5773. The melting (contraction) and recrystallization of fibrous proteins in nonaqueous media,

L. Mandelkern, G. Canty, and A, F. Diorio. J. Phys. Chem. 67, No. 12, 2882-2884 (Dec. 1963).

5774. The method for mechanical translation used

by the National Bureau of Standards group and

the structure of its machine glossary, I. Rhodes.

(Proc. 26th Annual American Documentation

Institute Meeting, Oct. 1963), Book, Automation

and Scientific Communication, p. 23-24 (Am. Documentation Inst., 1963).

5775. The microwave spectrum of normal propyl

chloride, T. N. Sarachman. J. Chem. Phys. 39,

No. 2, 46 9-473 (July 1963). 5776. The nature of the compound obtained from

aqueous cesium chloride solution and hydrogen

chloride, A. G. Maki and R. West. Inorg. Chem.

2, 657 (1963). 5777. The nightglow, F. E. Roach. Book; Advances

in Electronics and Electron Physics 1-44 (Academic Press Inc., New York, N. Y. , 1963).

354
1963

577S. The occurrence of short-duration cosmic noise absorption events inside the southern auroral

zone, C. S. Gillraor, Jr., and J. K. Hargreaves.

J. Atmospheric and Terrest. Phys. 25, 311-317

(June 1963).

5779. The orthobaric densities of parahydrogen, derived heats of vaporization and critical constants, H. M. Roder, D. E. Diller, L. A. Weber,

and R. D. Goodwin. Cryogenics 3, 16-22 (Mar. 1963).

5780. The personal side of a research project, A. T. McPherson. J. Wash. Acad. Sci. 53, No. 3, 63-66 (Mar. 1963).

5781. The possible uses of the sugar grove radio telescope facility in the technical programs of

NBS, J. W. Herbstreit, C. G. Little, and D. W. Patterson. Radio and Radar Astronomy Report of the Committee on Science and Astronautics, U. S. House of Representatives, Eighty-Seventh

Congress, 2d Session, December 12, 1962, p. 23-31

(Wash. D. C, 1963).

5782. The possibility of guided electromagnetic

waves in the earth's crust, J. R. Wait. IEEE

Trans. Ant. Prop. Spec. Issue on Electromagnetic

Waves in the Earth AP-11, No. 3, 330-335 (May 1963).

5783. The precise evaluation of lens distortion,

F. E. Washer. Photogrammetric Eng. XXXI, No. 3, 327-332 (Mar. 1963).

5784. The propagation time of a radio pulse,

J. R. Johler. IEEE Trans. Ant. Prop. AP-11, No.

6, 661-668 (Nov. 1963).

5785. The radio thermal noise properties of the

lower atmosphere, B. R. Bean. Program and Digest

1963 IEEE Prof. Group. Ant. and Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colo., p. 30-31 (1963).

5786. The rapid selector, as currently used for information search and replica copy retrieval,

T. C. Bagg. (Proc. 26th Annual Meeting American Documentation Institute, Chicago, 111., Oct. 1963), Automation and Scientific Commun. Pt. 2, 227-228 (Oct. 1963).

5787. The reactions of methyl radicals, in the

solid-, liquid-, and gas-phase photolysis of dimethylmercury, R. E. Rebbert and P. Ausloos.

J. Am. Chem. Soc. 85, No. 20, 3086-3089 (Dec. 1963).

5788. The reactions of methyl radicals with

aromatic compounds. I. Toluene, ethylbenzene, and

cumene, I. B. Burkley and R. E. Rebbert. J. Phys. Chem. 67, No. 1, 168-169 (Jan. 1963).

5789. The reactions of methyl radicals with aro- matic compounds. II. The xylenes, W. A. Sanders

and R. E. Rebbert. J. Phys. Chem. 67, No. 1, 170-171 (Jan. 1963).

5790. The redefinition of the second and the velocity of light, G. E. Hudson and W. Atkinson.

Phys. Today 16, No. 5 30-36 (May 1963).

5791. The role of carbon dioxide in the bone char

process, F. G. Carpenter, V. R. Deitz, and D. Larry. Proc. 1963 Sugar Industry Technologist

22, No. 2, 27-45 (Chemistry Institute, New York,

N. Y. 1963).

5792. The role of the International Union of Pure

and Applied Chemistry, E. Wichers. J. Chem. Doc.

3, No. 7, 7-11 (1963).

5793. The scope of electrochemistry, W. J. Hamer.

J. Electrochem. Soc. 110, No. 6, 115C (June 1963).

5794. The second industrial revolution, A. T. McPherson. (Spanish translation of), Linea Recta

132, No. 669, 348-354 (1963). 5795. The segmental variation of Blaschke products,

G. T. Cargo. Duke Math. J. 30, No. 1, 143-150

(Mar. 1963).

5796. The sequence selection problem in the crystallization of polymers. I. Homopolymers,

F. Gornick and J. L. Jackson. J. Chem. Phys. 38, No. 5, 1150-1154 (Mar. 1963).

5797. The spheroidal method for satellite orbits,

J. P. Vinti. Proc. Intern. Symp. Use of Artificial

Satellites for Geodesy, p. 12-16 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1963). 5798. The spin lattice relaxation time of some paramagnetic dispersions, P. H. Fang. (Proc. XI Colloque Ampere, Eindhoven, The Netherlands, June

1962), Book, Magnetic and Electric Resonance and

Relaxation, pp. 123-128 (1963).

5799. The standard potential of the silver-silver

chloride electrode in 10 and 15% mannitol at 25°, M. Paabo and R. A. Robinson. J. Phys. Chem. 67, No. 12, 2861-2862 (Dec. 1963).

5800. The structure of gaseous copper (II) nitrate

as determined by electron diffraction, R. E. Lavilla and S. H. Bauer. J. Am. Chem. Soc. 85, No. 20, 3597-3600 (Nov. 1963).

5801. The structure of gaseous copper (II) nitrate

as determined by electron diffraction, R. E. LaVilla and S. H. Bauer. J. Am. Chem. Soc. 85, 3597-3600 (Nov. 1963).

5802. The structure of hexagonal silver iodide,

G. Burley. J. Chem. Phys. 38, No. 12, 2807-2812

(June 1963).

5803. The sudden ionospheric disturbance, C. S. Warwick. (Proc. Corfu Summer School, June 1962),

Book, Radio Astronomical Studies of the Atmosphere, p. 457-475 (North-Holland Publ. Co., Amsterdam, The Netherlands, 1963).

5804. The theory of an antenna over an inhomogeneous ground plane, J. R. Wait. Book, Electro- magnetic Theory and Antennas, ed. E. C. Jordan,

Pt. 2, p. 1079-1098 (Pergamon Press Inc., Oxford, England, 1963).

5805. The thermodynamics of the ternary system: urea-sodium chloride-water at 25°, V. E. Bower

and R. A. Robinson. J. Phys. Chem. 67, No. 7, 1524-1527 (July 1963).

5806. The total electron content of the ionosphere

content at middle latitudes near the peak of the solar cycle, R. S. Lawrence, D. J. Poskony, 0. K, Garriott, and S. C. Hall. J. Geophys. Res. 68,

No. 7, 1889-1898 (Apr. 1963).

5807. The turbulent characteristics of the radio refractive index near the ground, B. R. Bean

and R. E. McGavin. Program and Digest 1963 IEEE

Prof. Group. Ant. and Prop. Symp. Space Tele- communications, July 9-11, 1963, Boulder, Colo.,

p. 60-64 (July 1963).

5808. The use of dual-polarized broad beam antennas to determine the extraterrestrial intensity

of the cosmic radio noise at high frequencies,

C. G. Little, G. M. Lerf aid, and R. Parthasarathy

.

Program and Digest 1963 IEEE Prof. Group Ant. and

Prop. Symp. Space Telecommunications, July 9-11, 1963, Boulder, Colo., p. 9-15 (1963).

5809. The validity of crystal field theory as applied to rare earth ions; an analysis of the spectrum of praseodymium trichloride, J. C. Eisenstein. Proc. 1st Intern. Conf. Paramagnetic

Israel, I, Pt. II, 253-259 (Academic New York, N. Y. , 1963).

355
1963

5810. The wear of magnetic recording tape and solubility of the binder, F. Nesh. IEEE Trans. Audio AU-11, No. 3, 97 (May- June 1963).

5811. The zeros of infrapolynomials with prescribed values at given points, J. L. Walsh and 0. Shisha. Proc. Am. Math. Soc. 14, No. 5 839-844

(Oct. 1963).

5812. Theoretical studies on signal-to-noise

characteristics of an FM system, H. Akima. I EE

Trans. Space Electron. Telemetry SET-9, No. 4, 101-108 (Dec. 1963).

5813. Theory of operation of the rotary positive

displacement meter, C. T. Collett. (Proc. 23d Annual Gas Measurement Short Course, Aug. 20, 1963). West Virginia Univ. Tech. Bull. 70, p. 48-53 (1963). 5814. Theory of the electronic polarizabilities of ions in crystals; Application to the alkali halide crystals, A. R. Ruffa. Phys. Rev. 130,

No. 4, 1412-1423 (May 15, 1963).

5815. Thermal conductivity, R. L. Powell. American

Institute of Physics Handb. 2d edition, Sect. 4g,

p. 4-76-4-101 (1963). 5816. Thermocouple and radiation thermometry above

900°K, H. J. Kostkowski and G. W. Burnes . (Symp. Measurement of Thermal Radiation Properties of Solids, Dayton, Ohio, Sept. 5-7, 1963), Natl. Aeron. and Space Admin. SP-31, Session I, Paper

3, p. 13-30 (Dec. 1963).

5817. Thermodynamic properties of gases, J. Hilsenrath. American Institute of Physics Handb.

2d edition, Sec. 4h, p. 4-101-4-157 (1963). 5818. Thermodynamic representation of high-pressure vapour-liquid equilibria, J. M. Prausnitz.

Chem. Eng. Sci. 18, 613-630 (1963).

5819. Thermal conductivity of solid H20 and D 20

at low temperatures, J. W. Dean and K. D. Timmerhaus. Advan. Cryog. Eng. 8, Paper E-5, 263-

267 (1963). 5820. Thermal expansion, R. K. Kirby. American

Institute of Physics Handb. 2d edition, Sect. 4f,

p. 4-64-4-76 (1963). 5821. Thermal expansion of silver iodide, A. Bienen- stock and G. Burley. J. Phys. Chem. Solids 24, 1271-1278 (Apr. 1963).

5822. Thermal radiation properties of solids at low temperatures, R. J. Corruccini. (Symp. Meas- urement of Thermal Radiation Properties of Solids, Dayton, Ohio, Sept. 5-7, 1963), Natl. Aeron. and Space Admin. SP-31, Session II, Paper

4, p. 33 (Dec. 1963).

5823. Thickness determination, V. A. Lamb. Electro- platers Process Control Handb., Ed. D. G. Foulke

and F. E. Crane, Jr., Chapt. 12, 327-346 (Rein- hold Publ. Corp., New York, N. Y. , 1963).

5824. Three-body-bound state in He 4

, J. M. Blatt,

J. N. Luness, and S. Y, Larsen. Phys. Rev. 131,

No. 5, 2131-2132 (Sept. 1, 1963).

5825. Time and frequency broadcasting, A. H. Morgan. ISA J. 10, No. 6, 49-54 (June 1963).

5826. Tooth fluorometer, A. F. Forziati, J. Kumpula, and J. J. Barone. J. Am. Dental Assoc.

67, No. 5, 663-669 (Nov. 1963).

5826A. Topside sounding as a tool for global ionosphere studies, R. W. Knecht. IEEE Trans.

Ant. Prop. Programs Digest, pp. 21-23 (1963). 5827. Transference numbers in pure molten sodium

nitrate, R. J. Labrie and V. A. Lamb. J. Electrochem. Soc. 110, No. 7, 810-814 (July 1963).

5828. Transition array for d

3 -d 2p: vanadium, H. Mendlowitz. Astrophys. J. 138, No. 4, 1277-1296

(Nov. 15, 1963).

5829. Translational dispersion in gases, M. Greenspan. Estratto da Rendiconti della Scuola

Internazionale di Fisica 'E. Fermi', Corso

XXVII, 73-100 (1963). 5830. Transparent rigid mount for vacuum stopcocks, M. M. Anderson. Rev. Sci. Instr. 34, No. 2 187 (Feb. 1963).

5831. Transverse magnetoresistance of high purity aluminum from 4 to 30° K, J. R. Purcell and R. B. Jacobs. Cryogenics 3, 109-110 (June 1963).

5832. Two assumptions in the theory of attractive

forces between long saturated chains, R. Zwanzig.

J. Chem. Phys. 39, No. 9, 2251-2258 (Nov. 1963).

5833. Two-stream plasma instability as a source of irregularities in the ionosphere, D. T. Farley,

Jr. Phys. Rev. Letters 10, 279-282 (Apr. 1, 1963).

5834. Unitary symmetry in photoproduction and Physics

1963).

.n international

Mater. Res.

other electromagnetic interactic

son, H. J. Lipkin, and S. Meshkov. Letters 7, No. 1, 81-84 (Oct. ] 5835. United States participatioi standardization, A. T. McPhersc

Std. 3, No. 4, 310-311 (Apr. 1963).

5836. Unstable detonation near a hypervelocity

missile, F. W. Ruegg and W. W. Dorsey. Ninth

Symp. Combustion, p. 476-477 (1963). 5837. Use of photographic film for personnel

dosimetry; basic physical considerations, M. Ehrlich. Symp. Personnel Dosimetry Techniques

for External Radiation, Apr. 1-5, 1963, Madrid,

Spain, p. 49-74 (Apr. -Dec. 1963).

5838. Use of transistors in Van de Graaff source

leak controls, A. C. B. Richardson and L. Costrell. Nucl. Instr. Methods 24, No. 1, 129-

130 (July 1963).

5839. Vacuum-tight cylinder joints and ball-andsocket joints, L. A. Guildner and H. F. Stimson.

Rev. Sci. Instr. 34, No. 6, 658-659 (June 1963).

5840. Vacuum ultraviolet photochemistry, VI. Photolysis of cyclopropane with the Xenon

resonance lines, C. L. Currie, H. Okabe, and J. R. McNesby. J. Phys. Chem. 67, No. 7, 1494-1497

(July 1963).

5841. Vacuum ultraviolet photochemistry, VIII. Photolysis of n-butane, H. Okabe and D. A. Becker. J. Chem. Phys. 39, No. 10, 2549-2555

(Nov. 15, 1963).

5842. Vapor snakes in solid argon, G. L. Pollack

and H. P. Broida. J. Chem. Phys. 38, No. 4, 968-

969 (Feb. 15, 1963).

5843. Vaporization of uranium monophosphide, K. A. Gingerich, P. K. Lee, and J. E. Efimenko. Nature

200, No. 4908, 774-776 (1963). 5844. Variations in phase path of man-made one- hop whistler mode signals at 18.6 kilocycles

per second, D. D. Crombie, F. A. McNeill, and

G. M. Allcock. J. Geophys. Res. 68, No. 23, 6229-6235 (Dec. 1, 1963).

5845. Velocity-depth relationship in microelectrophoresis cell for asphaltenes in nitromethane,

J. R. Wright and R. R. Minesinger. J. Colloid

Sci. Letter 18, 802-804 (Oct. 1963).

5846. Verification of the tenfold assignment of the Baryon resonances, S. Meshkov, C. A. Levinson, and H. J. Lipkin. Phys. Rev. Letters

10, No. 8, 361-364 (Apr. 15, 1963).

356
1V63

5847. VLF measurements, A. G. Jean. Debris Motion

and Ionospheric Effects Symp., Proc. DASA Spec. Rept. 12, p. 681-736 (May 1963).

5848. VLF phase disturbances following U.S.S.R. high-altitude nuclear tests, A. G. Jean. Beta

Beta and Delta Gamma Symp. Proc., DASA Spec.

Rept. 13, p. 232-258 (May 1963).

5849. Very-low-frequency phase observations of solar flare ionization in the D region of the ionosphere, C. J. Chilton, F. K. Steele, and R. B. Norton. J. Geophys. Res. 68, No. 19, 5421-5435

(Oct. 1, 1963).

5850. VLF propagation, W. L. Taylor and A. G. Jean. Proc. Mountain States Navy Research and Development Clinic, Raton, N. M. , Sept. 28-29,

1961, p. A45-A66 (Raton, Communications and Electronics Foundation, 1963).

5851. Very low frequency propagation in the earth- ionosphere waveguide of nonuniform width, J. R. Wait. Proc. Intern. Conf . Ionosphere, July 1962,

p. 446-451 (Institute of Physics and the Physical

Society, London, England, 1963).

5852. Very- low-frequency radio waves and the ionosphere, D. D. Crombie. Science 142, No. 3591, 508-510 (Oct. 25, 1963).

5853. Very low temperature data. Properties of paramagnetic salts, R. P. Hudson. American

Institute of Physics Handb. 2d edition, Sec. 5g,

p. 5222-5233 (1963). 5854. Vibration-rotation spectra of BrCN, Addendum,

A. Maki. J. Chem. Phys. 38, No. 5, 1261-126 2 (May 1963).

5855. Water vapor boundary layers in biological

systems, D. M. Gates. Proc. Symp. Humidity and Moisture (1963).

5856. Wave functions and oscillator strengths for

the lithium iso-electronic sequence, A. W. Weiss. Astrophys. J. 138, No. 4, 1262-1276 (Nov.

15, 1963).

5857. Wavelength of Hgl98 Zeeman filter relative

to that of the 2537-A absorption line of an atomic beam, W. G. Schweitzer, Jr.. and K. G. Kessler. J. Opt. Soc. Am. 53, No. 12, 1382-1388

(Dec. 1963).

5858. Wavelength passed by Hg198 Zeeman-split absorption filter, W. G. Schweitzer. J. Opt. Soc. Am. 53, No. 11, 1250-1252 (Nov. 1963).

5858A. Whats new in control standards? H. L. Mason. Control Eng. 10, 99-101 (May 1963).

5859. Whistlers, R. M. Gallet. Grenoble Univ. Ecole Phys. Theorique, Les Houches, Geophysique

Exterieur, p. 551-590 (Gordon and Breach, New

York, N. Y., 1963).

5860. Pioneer in dental research, G. C. Paffen- barger and Wilmer Souder. N. Y. J. Dentistry 33,

No. 5, 191-192 (May 1963). 5861. Work function and secondary emission,

G. F. Rouse. American Institute of Physics Handb.

2d edition, Sect. 9 j . p. 9-146-9-160 (1963).

5862. X-ray microscopy of polymers by point pro- jection, S. B. Newman. Mod. Plastics 40, No. 7, 165-179 (Mar. 1963).

5863. X-ray study of a cadmium borate glass, S. Block, J. Molin, and G. J. Piermarini. J. Am.

Ceram. Soc. 46, 557 (1963). 5864. Zeros of polynomials and fractional order differences of their coefficients, G. T. Cargo

and 0. Shisha. J. Math. Anal. Appl. 7, No. 2, 176-182 (Oct. 1963).

357
1964

5865. A classical model for the study of isotope

effects in energy exchange and particle ex- change reactions, R. J. Rubin. J. Chem. Phys. 40, No. 4, 1069-1077 (Feb. 15, 1964).

5866. A coaxial adjustable sliding termination, W. E. Little and J. P. Wakefield. IEEE Trans. Microwave Theory Tech. MTT-12, No. 2, 247-248 (Mar. 1964).

5867. A combinatorial problem and a single decoding

method for cyclic codes, M. Nesenbergs. IEEE

Trans. Inform. Theory, IT-10, 250-252 (July 1954).

5868. A comparison of the 7A 1 and the NBS-A atomic

time scales, J. Bonanomi, P. Kartaschoff, L. J. Newman, and W. R. Atkinson. Proc. IEEE 52, No. 4, 439 (Apr. 1964).

5869. A complete description of the normal subgroups

of genus one of the modular group, M. Newman. Am.

J. Math 86, 17-24 (1964).

5870. A condensation model producing crystalline

or amorphous tetrahedral networks, F. Ordway. Science 143, No. 3608, 800-801 (Feb. 1964).

5871. A DC-RF substitution error in dual element bolometer mounts, G. F. Engen. IEEE Trans. Instr. Meas. IM-13, No. 2 and 3, 58-64 (June-Sept. 1964).

5872. A differential microwave phase shifter,

R. W. Beatty. IEEE Trans. Microwave Theory Tech. MTT-12, No. 2, 250-251 (Mar. 1964).

5873. A diffusive model for the initial phase of a solar proton event, G. C. Reid, J. Geophys. Res.

69, 2659-2667 (June 1964).

5874. A liquid-medium step-function pressure

calibrator, R. 0. Smith. J. Basic Eng. 86, No. 4, 723-727 (Dec. 1964).

587 5. A low input VSWR coaxial diode switch for the UHF band, W. L. Ecklund. IEEE trans. Microwave

Theory Tech. Corres. Sec. MTT-12, No. 3, 359

(May 1964).

5876. A magnetic amplifier for use with diode

logic, E. W. Hogue. IEEE Trans. Commun. Electron.

83, No. 75, 803-808 (Nov. 1964).

5877. A magnetic fixed point for thermometry below

1°K, J. C. Eisenstein, R. P. Hudson, and B. W. Mangum. Appl. Phys. Letters 5, No. 11, 231 (Dec.

1, 1964).

5878. A mechanistic model for the limits of auditory perception, E. L. R. Corliss. Proc. Symp. Models for the Perception of Speech and Visual

Form, Boston, Mass., Nov. 11-14, 1964 (Air Force Research Center, Cambridge, Mass., 1964).

5879. A multistub coaxial line tune, W. E. Little

and E. Niesen. IEEE Trans. Microwave Theory

Tech. MTT-12, No. 5, 570-571 (Sept. 1964).

5880. A new steady-state calorimeter for measuring

heat transfer through cryogenic insulation,

D. R. Beck, F. Kreith, and R. H. Kropschot.

(Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado

and National Bureau of Standards, Boulder, Colo.,

Aug. 19-21, 1963), Book, Advances in Cryogenic Engineering 9, Paper B-4, 64-70 (Plenum Press

Inc., New York, N. Y. , 1964).

5881. A note on some quadrature formulas for the interval '(- oo , oc ) , s. Haber. Math. Computation

18, No. 86, 313-314 (1964).

5882. A note on the attenuation function for propagation over a flat layered ground, L. E. Vogler. IEEE Trans. Ant. Prop. AP-12, No. 2, 240-242 (Mar. 1964).

58b2A. A precision noise-comparator, M. G. Arthur, C.

M. Allred, and M. 1< . Cannon. IEEE Trans. Instr. Meas. IM-13, No. 4, 301-305 (Dec. 1964).

5883. A preliminary study of the orifice flow characteristics of liquid nitrogen and liquid hydrogen discharging into a vacuum, J. A. Brennan. (Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado and National Bureau of Standards,

Boulder, Colo., Aug. 19-21, 1963), Book, Advances

in Cryogenic Engineering 9, Paper E-6, 292-303

(Plenum Press Inc., New York, N. Y. , 1964).

5884. A recalibration of the National Bureau of Standards tritiated water standard, W. B. Mann,

R. W. Medlock, and 0. Yura. Intern. J. Appl. Radiation Isotopes 15, No. 6, 351-361 (June 1964).

5885. A review of photodetachment and related negative ion processes relevant to aeronomy,

L. M. Branscomb. Ann. Geophys. 20, No. 1, 88-105

(Jan. -Mar. 1964).

5886. A simple derivation of the FAXEN SOLUTION TO

THE LAMM equation, G. H. Weiss. J. Math. Phys. 5, 675-676 (1964). 5887. A simplified freezing point apparatus, G. S. Ross and A. R. Glasgow, Jr. Anal. Chem. 36, No. 3, 700 (Mar. 1964).

5888. A study of geomagnetic effects associated with auroral zone electron precipitation ob- served by balloons, W. H. Campbell. J. Geomagn.

Geoelec. 11, No. 1, 37-57 (June 1964).

5889. A study of auroral absorption events at the South Pole 1. Characteristics of the events,

J. K. Hargreaves, H. J. A. Chivers, and J. D. Petlock. J. Geophys. Res. 69, No. 23, 5001-5007

(Dec. 1964).

5890. A survey of ionospheric effects upon earthspace radio propagation, R. S. Lawrence, C. G. Little, and H. J. A. Chivers. Proc. IEEE 52, No. 1, 4-27 (1964).

5891. A survey of research on frozen food transport refrigeration, P. R. Achenbach. ASHRAE J.

6, No. 11, 29-36 (Nov. 1964).

5892. Containing both the Lorentz Group and SU3,

A. 0. Braut. II Nuovo Cimento 32, 234-236 (Apr. 1964)

.

5893. A theoretical study of the MARTIAN AND

CYTHER IAN ionospheres, R. B. Norton. Natl. Aero. Space Admin. Tech. Note D-2333 (July 1964)

.

5894. A time-varying model for the ionospheric

F2 layer, H. Rishbeth. J. Atmospheric Terrest.

Phys. 26, No. 6, 657-685 (June 1964).

5895. A two-parameter family of hyper-POISSON

distributions, G. E. Bardwell and E. L. Crow.

J. Am. Stat. Assoc. 59, No. 305, 133-141 (Mar. 1964).

5896. A unitary symmetry selection rule and its application to new resonances, C. A. Levinson,

H. J. Lipkin, and S. Meshkov. II Nuovo Cimento

32, Ser. X, 1376-1379 (1964).

5897. A waveguide noise-tube mount for use as an interlaboratory noise standard, C. K. S. Miller,

W. C. Daywitt, and E. Campbell. (Proc. Intern. Measurements Conf.), Acta Imeko 3, 371-382

(1964)

.

5898. Absence of pronounced quadrupole effects in the nuclear resonance of In in a non-cubic

environment, L. H. Bennett and R. J. Snodgrass.

Phys. Rev. 134, No. 5A, A1290 (June 1, 1964).

5899. Abbreviated calendar record, January- February 1964, A. H. Shapley. IQSY Notes 7, 19-

25 (May 1964)

.

358
1964

5900. Absolute oscillator strengths for Fe I, C. H. Corliss and B. Warner. Astrophys. J. Suppl. Series No. 83, VIII, 395-438 (Feb. 1964).

5901. Absorption spectra of diatomic molecules in liquid and crystalline rare gases, G. L. Pollack

and A. A. Pollack. Book, Developments in Applied

Spectroscopy, ed. J. E. Forrette and E. Lanterman, 3, 376-382 (Plenum Press Inc., New York,

N. Y. , 1964).

5901A. Accuracy and precision of standards and measurements, W. A. Wildhack. Acta Imeko 4, 63-

81 (1964). 5902. Accurate length measurement of meter bar with

helium-neon laser, K. D. Mielenz, H. D. Cook} K. E. Gillilland, and R. B. Stephens. Science Letter 146, No. 3652, 1672-1673 (Dec. 25, 1964)

.

5903. Address encoding—a study of the doublebinary keyboard as a link in the machine-sorting

of mail, J. R. Cornog, J. F. Hockman, and J. C. Craig. (Proc. Winter Annual Meeting, American

Society of Mechanical Engineers, Philadelphia,

Pa., Nov. 17-22, 1963), ASME Publ. 63-WA-338

(1964) . 5903A. ADI auxiliary publications program, R. W. Zimmerer. IEEE Trans. Microwave Theory Tech. MTT-13, No. 6, 883-884 (Nov. 1965).

5904. Advances in Cryogenic Engineering, Book,

K. D. Timmerhaus, Editor. Proceedings of the

1963 Cryogenic Engineering Conference, Plenum

Press Inc., New York, N. Y. , 1964. 5905. Alkaline earth cation distribution in vitreous borates, S. Block and G. J. Piermar ini. Phys. Chem. Glasses 5, No. 5, 138-144

(Oct. 1964).

5906. All-glass-sorption vacuum trap, F. B. Haller.

Rev. Sci. Instr. 35, No. 10, 1356-1357 (Oct. 1964).

5907. Allotropy in some rare-earth metals at highpressure, G. J. Piermarini and C. E. Weir, Science 144, No. 3614, 69-71 (Apr. 3, 1964), 5908. Alouette ionic magnetic-field and plasma

studies, W. Calvert, H. Rishbeth, and T. E. VanZandt. IG Bull. No. 83, p. 16-19 (May 1964)

;

Trans. AGU 45, No. 2, 398-401 (June 1964).

5909. An application of the inverse Z-transform

theory to the synthesis of linear antenna arrays,

M. T. Ma. IEEE Trans. Ant. Prop. AP-12, No. 6, 798-799 (Nov. 1964).

5910. An experimental 350-kv, 1-picofarad air

capacitor, A. E. Peterson. IEEE Trans. Paper No. 63-926, No. 71, p. 129-131 (Mar. 1964).

5911. An explanation for the apparent polarization

of some geomagnetic micropulsations, J. H. Pope.

(Pearls), J. Geophys. Res. 69, No. 3, 399-405

(Feb. 1, 1964).

5912. An implication for lasers of an aspect of interference at high field strengths, J. A. White. Nature Letter 201, No. 4922, 911-912

(Feb. 29, 1964).

5913. An international comparison of voltage transformer calibrations to 350 KV, W. C. Sze, F. K. Harris, N. L. Kusters, 0. Peter sens, and W. J. M. Moore. IEEE Trans. Commun. and Electron. Paper

No. 63-992, No. 70, 13-18 (Jan. 1964).

5914. An X-ray determination of the Debye temperature of silver iodide, G. Burley. J. Phys. Chem. Solids 25, 629 (1964)

.

5915. Analog simulation of zone melting, H. L. Mason. Instr. Control Systems 37, No. 1, 121-123

(Jan. 1964).

5916. Analysis of a differential phase shifter,

D. A. Ellerbruch. IEEE Trans. Microwave Theory

Tech. MTT-12, No. 4, 453-459 (July 1964).

5917. Analysis of the frost phenomena on a cryosurface, R. V. Smith, D. K. Edmonds, E. G. Brentari, and R. J. Richards. (Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado and National Bureau of Standards, Boulder, Colo., Aug. 19-

21, 1963), Book, Advances in Cryogenic Engineering 9, Paper B-7, 88-97 (Plenum Press Inc., New York, N. Y., 1964)

.

5918. Angular momentum distribution and emission

spectrum of OH ( 2 £ ) in the photodissociation

of H 2 0, T. Carrington. J. Chem. Phys. 41, No. 7, 2012-2018 (Oct. 1, 1964).

5919. Annual observatory report from the National Bureau of Standards (spectroscopy), C. E. Moore. Astron. J. 69, No. 9, 696-698 (Nov. 1964).

5920. Anomalous transmission of rare gases for electrons of sub-excitation energies, J. A. Simpson. (Proc. 3d Intern. Conf. Physics of Electronic and Atomic Collisions, London, England, 1963), Book, Atomic Collision Processes,

ed. M. R. C. McDowell, p. 128-134 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1964).

5921. Anomaly in response of semi-conductor detector at low temperature, W. R. Dodge, S. R. Domen,

A. T. Hirshfeld, and D. D. Hoppes. IEEE Trans.

Nucl. Sci. NS-11, 1-14 (June 1964).

5922. Antireciprocity and memory in the statistical approach to irreversible thermodynamics, R. E. Nettleton, J. Chem. Phys. 40, No. 1, 112-116

(Jan. 1964)

.

5923. APPA-TAPPI reference material program. III. A discussion of lambda varience and its appli- cation to TAPPI standard T 414 m-49 for internal tearing resistance of paper, T. W. Lashof. Tappi 47, No. 8, 445 (Aug. 1964).

5924. Application of Bernstein polynomials and interpolation theory to linear array synthesis,

M. T. Ma. IEEE Trans. Ant. Prop. AP-12, 668-677

(Nov. 1964)

.

5925. Application of the theory of absorbing

Markov chains to the statistical thermodynamics

of polymer chains in a lattice, J, Mazur. J. Chem. Phys. 41, No. 8, 2256-2266 (Oct. 1964).

5926. Approximating symmetric relations by equivalence relations, C. T. Zahn, Jr. J. Soc. Ind. Appl. Math. 12, No. 4, 840-847 (Dec. 1964).

5927. Approximations to the pair correlation function for a hard sphere fluid, M. Klein. Phys. Fluids 7, No. 3, 391-401 (Mar. 1964).

5928. APS division of electron physics—the first

20 years, L. L. Marton. Phys. Today pp. 44-50

(Oct. 1964).

5929. Aspects of the National Bureau of Standards instrumentation literature reference file,

J. F. Mayo-Wells. 19th Annual Instrument Society

of America Conference and Exhibit, Preprint 20.6-

5-64 (Oct. 12-15, 1964)

5930. Attenuation of radio waves in the troposphere,

B. R. Bean. Book, Advances in Radio Research 1, 121-155 (Academic Press, Inc., New York, N. Y.

,

1964)

.

5931. Audiofrequency compliances of prestressed

quartz, fused silica, and aluminum, M. Greenspan

and C. E. Tschiegg. J. Acoust . Soc. Am. 36, No.

3, 450-457 (Mar. 1964).

359
1964

5932. Automatic optical design, 0. N. Stavroudis.

Book, Advances in Computers, Ed. F. L. Alt and

M. Rubinoff, IV, 227-255 (Academic Press Inc., New York, N. Y. , 1964).

5933. Behavior of coaxial cable connectors for pulses with nanosecond risetimes, R. B. Schwartz

and A. C. B. Richardson. Nuclear Instr. Methods.

29, 83-88 (North-Holland Publ. Co., Amsterdam, The Netherlands, 1964).

5934. Binary error probability due to an adaptable

fading model, M. Nesenbergs. IEEE Trans. Commun. Systems CS-12, No. 1, 64-73 (Mar. 1964).

5935. Brightness temperature of the atmosphere using

a bi-exponential model in the 6-45 GHz frequency

range, E. J. Dutton, B. R. Bean, and E. R. Westwater. Proc. 1964 World Conf. Radio Meteorology

and 11th Weather Radar Conf. pp. 212-215 (Sept. 1964).

5936. Bound states in a Debye-Huckel potential,

C. R. Smith. Phys. Rev. 134, No. 5A, A1235-

A1237 (June 1964).

5937. Calculation of the radiative tail in the in- elastic scattering electrons, L. C. Maximon and

D. B. Isabelle. Proc. Intern. Conf. Nuclear Physics, Paris, France, July 2-8, 1964, 2, 1031-1033

(1964).

5938. Calibration of potentiometers by resistance

bridge methods, D. Ramaley. Instr. Control Systems

37, No. 1, 106-108 (Jan. 1964).

5939. Unassigned.

5940. Calorimetry (report on Calorimetry Conf.),

G. T. Armstrong. Science 143, No. 3602, 158-163

(Jan. 10, 1963); Phys. Today 17, No. 2, 50-54

(Feb. 1964).

5941. Carbon monoxide on niobium, R. Klein and

J. W. Little. Surface Sci. 2, 167-176 (North- Holland Publ. Co., Amsterdam, The Netherlands,

1964)

.

5942. Cation-exchange between molten salts and a special porcelain of high sodium content, R. J. Labrie. J. Electrochem. Soc. Ill, No. 4, 473- 476 (Apr. 1964).

5943. Change in the heat capacity of boron tri- oxide during the glass transformation, S. S. Chang and A. B. Bestul. J. Phys. Chem. 68, No.

10, 3082 (Oct. 1964).

5944. Changes in living, J. P. Eberhard. Proc. Conf. Environment of Change, Sterling Forest, Tuxedo,

N. Y., June 14, 17, 1964, pp. 62-67 (1964).

5945. Changes in relation between refractive index and Young's modulus as the result of successive

heat treatment, E. H. Hamilton. J. Am. Ceram.

Soc. 47, No. 4, 167-170 (Apr. 1964).

5946. Characteristics energy losses of electrons

in solids, L. Marton and C. Marton. Book, Actions Chimiques et Biologiques des Radiations,

Chapt. IV, p. 260-281 (Mason et Cle Editeurs,

Paris, France, 1964).

5947. Characteristics of insoluble protein of tooth and bone—I, Fluorescence of some acidic hydrolytic fragments, S. A. Mancewicz and K. C. Hoerman. Arch. Oral Biol. 9, 535-544 (Oct. 1964).

5948. Charge-transfer absorption spectra of NO in

Kr and Ch3 0H solutions, E. E. Ferguson and H. P. Broida. J. Chem. Phys. 40, No. 12, 3715-3716

(June 15, 1964).

5949. Climatology of elevated super-refractive

layers arising from atmospheric subsidence, B. A. Cahoon and L. P. Riggs. Proc. 1964 World Conf. Radio Meteorology and 11th Weather Radar Conf.,

pp. 52-55 (Sept. 1964)

.

5950. Coherence theories of tropospheric radio propagation, J. R. Wait. IEEE Trans. Ant. Prop. AP-12, No. 5, 649-651 (Sept. 1964).

5951. Coherent Raman effect in the off-axis Raman

resonator, H. Takuma and D. A. Jennings. Appl.

Phys. Letters 4, No. 11, 185-186 (June 1964).

5952. Collision induced microwave absorption in compressed gases. III. C02 -foreign-gas mixtures,

A. A. Maryott and S. J. Kryder. J. Chem. Phys.

41, No. 6, 1580-1582 (Sept. 15, 1964).

5953. Colorimetry in paraforpal fields. II. Additivity failure, I. Nimeroff. J. Opt. Soc. Am.

54, No. 6, 833-838 (June 1964).

5954. Colorimetry in paraforpal fields. I. Color- matching functions, I. Nimeroff. J. Opt. Soc.

Am. 54, No. 6, 824-832 (June 1964).

5955. Comment on obscurities of oscillator noise,.

L. Fey, W. R. Atkinson, and J. Newman. Proc. IEEE Letter 52, 104-105 (Jan. 1964).

5956. Comments on the paper "A liquid-medium step- function pressure calibrator," by R. 0. Smith,

J. R. Cross. Am. Soc. Mech. Eng. Series D. No. 86

pp. 729 (1964).

5957. Comments on the paper "An experimental in- vestigation of backscattering of radio waves from

the equatorial electrojet, " by R. L. Closs.

R. Cohen and D. T. Farley, Jr. Proc. Phys.

Soc. 84, Pt. 4, No. 540, 619-620 (J. W. Arrowsmith Ltd., London, England, June 1964).

5958. Comparative rate measurements with a singlepulse shock tube, W. Tsang. J. Chem. Phys. 40, No. 4, 1171-1172 (Feb. 1964).

5959. Comparison calibration of inductive voltage

dividers, R. V. Lisle and T. L. Zapf. ISA Trans.

3, No. 3, 238-242 (July 1964).

5960. Comparison of a new SU3 prediction with experiment, S. Meshkov, G. A. Snow, and G. B. Yodh. Phys. Rev. Letters 12, No. 3, 87-92 (Jan. 20, 1964)

.

5961. Comparison of experimental reaction cross sections with various relations obtained from

SU 3 , S. Meshkov. Proc. Conf. Symmetry Principles

at High Energy, Coral Gables, Fla., Jan. 30, 1964, p. 104-126 (1964).

5962. Comparison of single-point and two-point loading for determining the strength of flat

glass, J. J. Kerper and T. G. Scuderi. Proc.

Am. Soc. Testing Materials 64, 1037-1043 (1964).

5963. Complex Lorentz group with a real metric. I. Group structure, A. 0. Barut. J. Math. Phys. 5, 1652-1656 (Nov. 1964).

5964. Composites in construction, A. A. Bates. Stanton Walker Lecture Series on the Materials

Sciences, Nov. 20, 1963, Lecture No. 1, pp. 15 (University of Maryland, College Park, Md. , 1964) 5965. Computer interpretation of English text and picture patterns, R. A. Kirsch. IEEE Trans. Electron. Computers, EC-13, No. 4, 363-376

(Aug. 1964).

5966. Conductance of copper m-benzenedisulfonate hexahydrate in N-methylpropionamide from 20 to

40°, T. B. Hoover. J. Phys. Chem. 68, No. 10, 3003-3008 (Oct. 1964).

5967. Conductance of potassium chloride in highly purified N-methylpropionamide from 20 to 40 , T. B. Hoover. J. Phys. Chem. 68, No. 4, 876-879

(Apr. 1964).

5968. Conduction-cooled, concentric sphere, glass

trap, S. Ruthberg. Vacuum 14, No. 1, 11 (Jan. 1964)

.

360
1964

5969. Configurations 4f 26s and 4f 26p in doubly

ionized Pr, N. Spector. J. Opt. Soc. Am 54, No.

11, 1359-1362 (Nov. 1964).

5970. Conjugate point observations at a variety of high geomagnetic latitudes, H. J. A. Chivers. AGARDograph 78, Artie Communications, Chapt. 2, pp. 27-38 (Pergamon Press Inc., London, England,

1964)

.

5971. Constancy of a modified Weston standard cell

over long periods, W. C. Vosburgh and R. G. Bates. J. Electrochem. Soc. Ill, No. 8, 997-998

(Aug. 1964).

5972. Unassigned.

5973. Continuum description of a high temperature

plasma, L. S. Klein and J. L. Jackson. Proc.

VI Intern. Conf. Ionization Processes in Gases, Paris, France, 1963, II, No. 11, 215-216 (June

1964)

.

5974. Continuum theory of a plasma, J. L. Jackson

and L. S. Klein. Phys. Fluids 7, No. 2, 232-241

(Feb. 1964).

597 5. Contribution to the theory of shell corrections, U. Fano and J. E. Turner. Natl. Acad. Sci.-

Natl. Res. Council Report 1133, No. 39, pp. 49-

67 (1964).

5976. Correction to a method for measuring the directivity of directional couplers, G. E. Schaffer and R. W. Beatty. IEEE Trans. Micro- wave Theory Tech. MTT-12, No. 3. 361 (May 1964).

5977. Correlation between observed wavelength shifts produced in electrodeless discharge tubes and predicted Stark-effect shifts in the spectrum of neutral germanium (Ge I), L. Minnhagen. J. Opt.

Soc. Am. 54, No. 3, 320-322 (Mar. 1964).

5978. Correlation factors for impurity diffusion

Bcc, diamond, and Fee Structures, J. R. Manning.

Phys. Rev. 136, No. 6A, A1758-A1766 (Dec. 14, 1964) . 5979. Coupling of particle-hole states and two particle-two hole states : damping, M. Danos and W. Greiner. Comptes Rendus du Congres Intern, de Physique Nucleaire, Ed. P. Gugenberger, II, 615-616 (Editions du Centre National de la Recherche Scientific, Paris, France, 1964)

.

5980. Coupling of particle-hole states and two particle-two hole states: splitting, W. Greiner

and M. Danos. Compt. Rend. Congres Intern, de Physique Nucleaire, Ed. P. Gugenberger, II, 617 (Editions du Centre National de la Recherche

Scientific, Paris, France, 1964).

5981. Cryogenic fluid, two-phase critical flow

studies related to reactor systems, R. V. Smith,

H. S. Isbin, H. K. Fauske, M. Petrick, C. H. Robbins, and F. R. Zuludek. Proc. 3rd United

Nations Intern. Conf. Peaceful Uses of Atomic

Energy, Geneva, Switzerland, Aug. 31-Sept. 9, 1964.

5982. Data processing system for the automatic transformation of observed plasma intensities

into their radial distribution, D. Paquette

and W. L. Wiese. Appl. Opt. 3, 291-295 (Feb. 1964)

.

5983. Design of static elastomeric seals for cryogenic temperatures, D. H. Weitzel, P. R. Ludtke, and R. F. Robbins. Proc. Conf. Design of LeakTight Separable Fluid Containers 2, 139-165

(NASA, Huntsville, Ala., Mar. 1964).

5984. Determination of error rates for narrowband communication of binary-coded messages in atmospheric radio noise, A. D. Spaulding. Proc. IEEE 52, No. 2, 220-221 (Feb. 1964).

5985. Determination of pH, theory and practice,

R. G. Bates. Book, 450 pages (John Wiley and

Sons, Inc., Wew York, N. Y. , Feb. 1964).

5986. Determination of the probability distribution of the number of secondary electrons,

Z. Bay and G. Papp. IEEE Trans. Nuclear Sci. NS-11, No. 3, 160-168 (June 1964).

5987. Determination of the propagation constants

for ultrasonic waves in melting and molten

polyethylene, R. K. Eby. J. Acoust. Soc. Am. Letter 36, No. 8, 1485-1487 (Aug. 1964).

5988. Developments in polymer evaluation procedures,

G. M. Kline. (Atti del XV Congresso Internazionale

delle materie plastiche, Turin, Italy, Sept. 26-

28, 1963), Mod. Plastics 41, No. 5, 182 (Jan. 1964)

.

5989. Dielectric polarizability of fluid parahydrogen, J. W. Stewart. J. Chem. Phys. 40, 3297-

3306 (June 1964)

.

5990. Diffusion in a polymer with lamellar morphology, polyethylene, R. K. Eby. J. Appl. Phys.

35, No. 9, 2720-2724 (Sept. 1964).

5991. Digitizing pictorial information with a precision optical scanner, R. T. Moore, M. C. Stark, and L. Cahn. Phot. Eng. XXX, No. 6, 923

(Nov. 1964).

5992. Direct quantitative analysis of microstructures by a digital computer, G. A. Moore. Am.

Soc. Metals Tech. Report No. 16.3 (1964) ; (con- densed version) Book, Computer Applications in Metallurgical Engineering, pp. Ill (Am. Soc. Metals, Metals Park, Ohio, 1964).

5993. Direct quantitative analysis of photomicrographs by a digital computer, G. A. Moore. Phot. Sci. Eng. 8, No. 3, 152-161 (May-June 1964).

5994. Discussion of paper on "predicting compressive strength from the properties of the fresh concrete," H. T. Arni. Mater. Res. Std. 4, No. 6, 296-297 (June 1964).

5995. Discussion of spin-spin relaxation formulae

and experiments, R. L. Peterson, Physics Letters

8, No. 3, 158-159 (Feb. 1964).

5996. Disproportionation-combination reactions of alkyl radicals and hydrogen atoms at low temperatures, R. Klein, M. D. Scheer, and R. Kelley.

J. Phys. Chem. 68, No. 3, 598-605 (Mar. 1964).

5997. Distillation analysis, R. T. Leslie and

E. C. Kuehner. Anal. Chem. 36, No. 5, 56R-70R

(Apr. 1964).

5998. Distribution to Students in samples from a rectangular universe, M. M. Siddiqui, Rev. Intern. Stat. Inst. 32, No. 3, 242-250 (Dec. 1964).

5999. Diurnal and seasonal variations of the atmosphere near the 100-kilometer level,

J. W. Wright. J. Geophys. Res. 69, 2851-2853

(June 1964)

.

6000. Unassigned.

6001. D-region electron density profiles during

auroras, G. M. Lerfald and C. G. Little, J. Geophys. Res. 69, 2857-2860 (June 1964).

361
6002. Dynamic theory of the nuclear collective

model, M. Danos and W. Greiner. Phys. Rev. 134, B285 (1964) . 6003. Early strength, flow and dimensional changes obtained on amalgam prepared with a standardized

mechanical technic, H. J. Caul, W. E. Crowell,

W. D. Kimmel, and G. C. Paf f enbarger . J. Am. Dental Assoc. 69, No. 6, 742-748 (Dec. 1964).

6004. Editorial, R. W. Beatty. IEE Trans. Microwave Theory Tech. MTT-12, No. 3, 274 (May 1964).

6005. Effect of additives on the ionic reaction mechanism in the radiolysis of methane,

P. Ausloos, S. G. Lias, and R. Gorden, Jr. J. Chem. Phys. 39, No. 12, 3341-3348 (Feb. 1964). 6006. Effect of blowing variables on the durability

of coating-grade asphalts, S„ H. Greenfeld. Ind. Eng. Chem. Product Res. Devel. 3, 158-164

(June 1964)

.

6007. Effect of electrical fields in the gamma

radiolysis of propane, P. Ausloos and R. Gorden,

Jr. J. Chem. Phys. 41, No. 5, 1278-1284 (Sept.

1, 1964).

6008. Effect of hydrogen-hydrogen exchange collisions, P. L. Bender. Phys. Rev. 132, No. 5, 2154-2158 (Dec. 1, 1963).

6009. Effect of pressure in the radiolysis and photolysis of methane, P. Ausloos, R. Gorden,

Jr., and S. G. Lias. J. Chem. Phys. 40, No. 7, 1854-1860 (Apr. 1964).

6009A. Effect of reactions with the atmosphere

during fatigue of metals, J. A. Bennett. (Proc. Sagamore Conf. Fatigue, Sagamore, New York,

Aug. 15, 1963), Book, Fatigue and Interdis- ciplinary Approach, pp. 209-227 (Syracuse University Press, Syracuse, N. Y. , 1964).

6010. Effects of anharmonicity on vibrational

energy transfer, F. H. Mies. J. Chem. Phys. 40,

No. 2, 523-531 (Jan. 1964).

6011. Effects of connectors and adapters on ac- frequencies, R. W. Beatty. IEEE Trans. Instr. Meas. IM-13, No. 4, 272-284 (Dec. 1964).

6012. Effects of composition and irradiation on

the glass transition temperature of methyl methacrylate-styrene copolymers, M. S. Parker,

V. J. Krasnan8ky , and B. G. Achhammer. J. Appl. Polymer Sci. 8, 1825-1838 (1964). 6013. Effects of deuteration and temperature upon

the photolysis of cellulose in a vacuum with

2537 A light, J. H. Flynn and W. L. Morrow.

J. Polymer Sci. A2, No. 1, 91-103 (Jan. 1964).

6013A. Effects of long-term stability on the definition and measurement of short-term stability, J. A. Barnes and D. W. Allan. Proc. IEEE-NASA Symp. Definition and Measurement of Short-term Frequency

Stability, Natl. Aeronaut. Space Admin. Spec. Publ.

80, pp. 119-123 (Nov. 23-24, 1964). 6014. 18 cm spectrum of OH, H. E. Radford. Phys.

Rev. Letters 13, No. 17 , 534-535 (Oct. 1964).

6015. Albert Einstein, as I remember him. (Com- mencement Address), C. Eisenhart. Albert Einstein

Senior High School, Kensington, Md. , June 15, 1964), J. Wash. Acad. Sci. 54, 325-328 (1964). 6016^ Elastic constants of single crystal Th0 2 at

25 C, P. B. Macedo, W. Capps, and J. B. Wachtman,

Jr. J. Am. Ceram. Soc. 47, No. 12, 651 (Dec. 1964)

.

6017. Electrical properties, A. J. Curtis. Book, Crystalline Olefin Polymers, Ed. R. A. V. Raff,

2, 105-130 (Interscience Publ. Inc., New York,

N. Y., 1964).

6018. Electrical resistance of wires of low temperature-coefficient of resistance useful in

calorimetry (10°K - 380°K) , G. T. Furukawa,

M. L. Reilly, and W. G. Saba. Rev. Sci. Instr. Note 35, No. 1, 113-114 (Jan. 1964).

6019. Electrochemical calorimetry. III. Thermal effects of nickel-cadmium batteries, W. H. Metzger, Jr. , and J. M. Sherfey. Electrochem.

Technol. 2, No. 9-10, 285-289 (Sept. -Oct. 1964).

6020. Electrochemical calorimetry. IV. Measurement

of the reversible heat effect attending the passage of electric current across a liquid junction.

A. Brenner and S. L. Catey. J. Electrochem. Soc.

Ill, No. 11, 1225-1230 (Nov. 1964).

6021. Electrode potentials in fused systems. VII. Effect of ion size on membrane potentials, K. H. Stern and J. A. Stiff. J. Electrochem. Soc. Ill,

No. 8, 893-897 (Aug. 1964).

6022. Electrode potentials in fused systems. VIII. Oxidation kinetics of silver in sodium chloride,

K. H. Stern and W. E. Reid, Jr. J. Phys. Chem.

68, No. 12, 3757-3764 (Dec. 1964).

6023. Electromagnetic cross sections for electron

and nuclear research, H. W. Koch. Nucl. Instr. Methods 28, 199-204 (1964). 6024. Electromagnetic measurements, H. W. Lance. Space/Aeron. R and D Handb. 42, No. 4, 199-202

(Sept. 1964).

6025. Electron density profile analysis of topside sounder ionograms, A. K. Paul and J. W. Wright.

J. Geophys. Res. 69, No. 7, 1431-1435 (Apr. 1, 1964)

.

6026. Electron distribution in the ionosphere,

J. W. Wright. Proc. URSI XlVth General Assembly,

Tokyo, Japan, Sept. 1963, XIII, 206-222 (1964). 6026A. Electron energy bands in SrTi03 and Ti02 (theory and experiment), A. H. Kahn, H. P. R. Frederikse, and J. H. Becker. (Informal Proc. Bull., Intern. Conf. Materials, Pittsburgh, Pa., 1963) , Book, Transition of Metal Compounds, Ed. Ev R. Schatz, pp. 53-64 (Gordon and Breach Sci. Publ., New York, N. Y., 1964).

6027. Electron impact studies of aromatic hydrocarbons. II. Naphthacene, naphthaphene, chrysene, triphenylene, and pyrene, M. E. Wacks. J. Chem.

Phys. 41, No. 6, 1661-1666 (Sept. 1964).

6028. Electron impact studies of aromatic hydrocarbons. III. Anzulene and naphthalene, R. J. Van Brunt and M. E. Wacks. J. Chem. Phys. 41,

No. 10, 3195-3199 (Nov. 15, 1964).

6029. Electron paramagnetic resonance of tetra- hedrally coordinated copper : the tetra- chlorocuprate ion, M. Sharnoff, J. Chem. Phys.

41, No. 7, 2203-2204 (Oct. 1964).

6030. Electron scattering without atomic or nuclear

excitation, J. W. Motz, H. Olsen, and H. W. Koch.

Rev. Mod. Phys. 36, No. 4, 881-928 (Oct. 1964).

6031. Electron spin resonance of Mo s+ in rutile,

T. T. Chang. Phys. Rev. 136, No. 5A, A1413-

A1416 (Nov. 30, 1964).

6032. Electronic energy bands in strontium titanate,

A. H. Kahn and A. J. Leyendecker. Phys. Rev. 135,

No. 5A, A1321-A1325 (Aug. 31, 1964).

6033. Electronic energy bands in SrTi03 and related

oxide semiconductors, A. H. Kahn and A. J. Leyendecker. Proc. 1964 Intern. Conf. Physics of Semiconductors, Paris, France, pp. 33-39

(Physique des Semiconductors, Paris, France,

1964) . 6034. Electronic g factor of rubidium, R. L. Driscoll. Phys. Rev. 136, No. 1A A54-A57 (Oct.

5, 1964).

6035. Electronic transport in strontium titanate,

H. P. R. Frederikse, W. R. Thurber, and W. R. Hosier. Phys. Rev. 134, No. 2A, 442-445 (Apr. 20, 1964). 362
1964

6036. Elementary derivation of time-correlation

formulas for transport coefficients, R. Zwanzig,

J. Chem. Phys. 40, No. 9, 2527-2533 (May 1964).

6037. Emission spectrometry, B. F. Scribner and

M. Margoshes. Anal. Chem. 36, No. 5, 329R-343R

(1964)

.

6038. Empirical rules for predicting ground-state

spins of light nuclei, T. Stovall. Phys. Rev.

133B, No. 2B, B268-B269 (Feb. 27, 1964).

6039. Energy dependence for the photodetachment of

I - near threshold, B. Steiner, M. L. Seman, and

L. M. Branscomb. (Proc. 3d Intern. Conf. Physics

of Electronic and Atomic Collisions, London, England, 1963), Book, Atomic Collision Processes,

ed. M. R. C. McDowell, p. 537-542 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1964).

6040. Energy levels of polarons in a magnetic field,

D. M. Larsen. Phys. Rev. 135, No. 2A, A419-A426

(July 1964)

.

6041. Energy loss straggling of protons and mesons: Tabulation of the Vavilov distribution, S. M. Seltzer and M. J. Berger. Natl. Acad. Sci.-Natl.

Res. Council Publ. 1133. Studies in the Penetration of Charged Particles in Matter, Chapt. 9, pp. 187-203 (1964).

6042. Energy losses and elastic resonances in electron scattering from H 2 , C. E. Kuyatt, S. R. Mielczarek, and J. A. Simpson. Phys. Rev. Letters

12, 293 (1964). 6043. Energy spectra and angular distributions of electrons transmitted through Sapphire (A1 2 03 ) foils, M. J. Berger and S. M. Seltzer. Natl.

Aero. Space Admin. Spec. Publ. SP3008, p. 1-107

(Mar. 1964).

6044. Energy, temperature and organisms, D. M. Gates, Am. Sci. Teachers 31, No. 4, 5 pages (May 1964).

6045. English translation of the Book, Vapor Pressure of the Chemical Elements, by A. N. Nesmeyanov,

R. Gary, Editor, 462 pages (Elsevier Publ. Co., New York N. Y. , 1964).

6046. Equilibrium pressure of oxygen over Mn2 03 - Mn3 04 at various temperatures, E. M. Otto. J. Electrochem. Soc. Ill, No. 1, 88-92 (Jan. 1964).

6047. Error analysis of Miller's recurrence algorithm, F. W. J. Olver. Math. Computation 18, No. 85, 65-74 (Jan. 1964)

.

6048. Error bounds for asymptotic expansions in turning-point problems, F. W. J. Olver. J. Soc. Ind. Appl. Math. 12, No. 1, 200-214 (Mar. 1964).

6049. Error bounds for asymptotic expansion with

an application to cylinder functions of large

argument, F. W. J. Olver, Book, Asymptotic Solu- tions of Differential Equations and their

Applications, Ed. C. H. Wilcox, pp. 163-183

(John Wiley and Sons, Inc., New York, N. Y., 1964)

.

6050. ESD Maui, Hawaii, measurements, M. C. Thompson, Jr. Proc. 3d Tropospheric Refraction

Effects Meeting 1, 89-93 (Nov. 1964).

6051. Estimation of weighting factors in linear regression and analysis of variance, J. Mandel. Technometrics 6, No. 1, 1-25 (Feb. 1964).

6052. Ethylene-propylene copolymers: crystallinity

,

infrared, and creep studies, F. J. Linnig, E. J. Parks, and L. A. Wood. J. Appl. Polymer Sci. 8, 2645-2651 (Nov. 1964).

6053. Evaluating computer systems analysis and design work in the Federal Government, W. H. Gammon. Book, Ideas for Management, Systems, and Procedures 1964, pp. 319-322 (1964)

.

6054. Evidence for a cooperative intramolecular

transition in poly-L-proline , F. Gornick, L.

Mandelkern, A. F. Diorio, and A. E. Roberts. J. Am. Chem. Soc. 86, No. 13, 2549-2555 (July

1964).

6055. Evidence of a stratified echoing region at 150

km in the vicinity of the magnetic equator during

daylight hours, B. B. Balsley. J. Geophys. Res.

69, No. 9, 1925-1930 (May 1964).

6056. Exact conditions for the preservation of a canonical distribution in a Markovian relaxation

process, H. C. Andersen, I. Oppenheim, K. E. Shuler,

and G. H. Weiss. J. Math. Phys. 5, 522-536 (Apr. 1964)

6057. Exact Faxen solution for centrifugation when sedimentation depends linearly on concentration,

I. H. Billick. Nature 201, No. 4922, 912-913

(Feb. 1964).

6058. Examples relating to the simplex method,

A. J. Goldman and D. Kleinman. Operations Res.

12, No. 1, 159-161 (Jan. -Feb. 1964).

6059. Excess entropy at glass transformation, A. B. Bestul and S. S. Chang. J. Chem. Phys. 40, 3731

(1964)

.

6060. Excitation by local electric fields in the aurora and airglow, L. R. Megill and N, P. Carleton. J. Geophys. Res. 69, No. 1, 101-122

(Jan. 1, 1964).

6061. Excitation of molecular rotation by slow

electrons, S. Geltman and K. Takayanagi. Physics

Letters 13, No. 2, 135-137 (Nov. 15, 1964).

6062. Exclusion of parity unfavored transitions in forward scattering, U. Fano. Phys. Rev. 135, No. 3B, B863-B864 (Aug. 1964).

6063. Experimental transition probabilities for six oxygen multiplets, J. E. Solarski and W. L. Wiese. Phys. Rev. 135, No. 5A, A1236-A1241

(Aug. 1964).

6064. Experimental verification of the WLF super- position technique, A. J. Bur. Insulation Mag.

pp. 38 (Dec. 1964).

6065. Expertise or experiments, C. Eisenhart. Science 146, No. 3647, 997-998 (Nov. 1964).

6066. Exterior corrosion of cast iron pipe,

M. Romanoff. J. Am. Water Works, Assoc. 56, No. 9, 1129-1143 (Sept. 1964).

6067. Fading on microwave line-of-sight paths,

H. T. Dougherty. Proc. 3d Tropospheric Refraction

Effects Meeting 1, 125-135 (Nov. 1964).

6068. Ferromagnetic resonance relaxation, wide

spin wave coverage by ellipsoids, A. S. Risley

and H. E. Bussey. J. Appl. Phys. 35, Pt. 2. No. 3, 896-897 (Mar. 1964).

6069. Field trial of the 1959 CIE supplementary

standard observer proposal, I. Nimeroff. J. Opt.

Soc. Am. 54, No. 5, 696-704 (May 1964).

6070. Flare importance ratings—some hope for im-. provement, C. S. Warwick. Proc. Natl. Aeronautic

Space Admin. Flare Conf. The Physics of Solar

Flares, pp. 27-28 (1964).

6071. Flash-photolysis spectroscopy of matrices,

L. J. Schoen and D. E. Mann. J. Chem. Phys. 41,

No. 5, 1514 (Sept. 1964).

6072. Flow field in a swirl chamber, D. H. Tsai. AIAA J. Tech. Note 2, No. 8, 1504-1505 (Aug. 1964).

6072. Flow field in a swirl chamber, D. H. Tsai. AIAA J. Tech. Note 2, No. 8, 1504-1505 (Aug. 1964).

6072A. Flow measurement standardization, T. Filban

and M. R. Shafer. ISA 19th Annual Conference and Exhibit on Instrumentation, New York, N. Y .

, Oct. 12-15, 1964), ISA Preprint 12.2-4-64 (1964).

6073. Fluctuations in a laser beam over 9 and 90 mile paths, W. R. Hinchman and A. L. Buck. Proc. IEEE 52, No. 3, 305-306 (Mar. 1964).

6074. Unassigned. 363
1964

6075. Fluctuations in ionospheric absorption events

at conjugate stations, J. K. Hargreaves and

H. J. A. Chivers. Nature 203, No. 4948, 963-964

(Aug. 29, 1964).

6076. Fluorometric demonstration of tryptophan in dentin and bone protein, K. C. Hoerman and S. A. Mancewicz. J. Dental Res. 43, No. 2, 276-280

(Mar. -Apr. 1964).

6077. Food for tomorrow's billions, A. T. McPherson.

Proc. Forum "Food in the Future: Concepts for Planning," Chicago, 111., OCt. 8-9, 1964, pp. 51-73 (Dairy and Food Industries Supply Assoc.

,

1964)

.

6077A. Foreword, R. G. Scott. Book, Cryogenics,

pp. V (Reinhold Publ. Corp., New York, N. Y., 1964)

.

6078. Formation of an electron depleted region in

the ionosphere by chemical releases, D. Golomb,

N. W. Rosenberg, J. W. Wright, and R. A. Barnes.

(Proc. 4th Intern. Space Science Symp., Warsaw,

June 4-10, 1963), Book, Space Research, ed. P. Muller, IV, 389-398 (North Holland Publ. Co., Amsterdam, The Netherlands, 1964).

6079. Formation of an electron depleted region

in the ionosphere by chemical releases, J. W. Wright, D. Golomb, N. W. Rosenberg, and J. A. Barnes. (Proc. 4th Intern. Space Science Symp., Warsaw, Poland, June 4-10, 1963), Book, Space Research IV, 389-398 (North-Holland Publ. Co., Amsterdam, The Netherlands, 1964).

6080. Four critical fields in superconducting indium

lead alloys, S. Gygax, J. L. Olsen, and R. H. Kropschot. Physics Letters 8, No. 4, 228-230

(Feb. 1964).

6081. 4f 3 and 4f 2 5d configurations of doubly ionized praseodymium (Pr III), R. E. Trees. J. Opt. Soc. Am. 54, No. 5, 651-657 (May 1964).

6082. Four-point probe measurement of non-uniformities in semiconductor sheet resistivity, L. J. Swartzendruber. Solid State Electron. 7, 413-422

(1964). 6083. Four-terminal-pair networks as precision ad- mittance and impedance standards, R. D. Cutkosky.

IEEE Trans. Commun. Elec. CE-70, 19-22 (Jan. 1964).

6084. Fractionation of uranium isotopes and daughter

products in weathered granite and uranium-bearing

sandstone, J. N. Rosholt, E. L. Garner, and W. R. Shields. Wind Riber basin region, Wyoming, U.S. Geol. Survey Prof. Paper 501-B, p. 884-887 (1964).

6085. Fracture in corrosive media, H. L. Logan. Book, Fracture of Engineering Materials, Chapt. 8, pp. 143-161 (American Society for Metals, Metals Park,

Ohio, Nov. 1964).

6086. Fracture topography, I. Wolock and S. B. Newman. Book, Fracture Processes in Polymeric solids, Phenomena and Theory, Ed. B. Rosen, Chapt. IIC, pp. 235-290 (Interscience Publ., New York, N. Y.

,

1964)

.

6087. Franck-Condon factors for polyatomic molecules,

T. E. Sharp and H. M. Rosenstock. J. Chem. Phys.

41, No. 11, 3453 (Dec. 1, 1964).

6088. Franck-Condon factors for the ionization of

CO, NO, and 02 , M. E. Wacks. J. Chem. Phys. 41,

No. 4, 930-936 (Aug. 1964).

6089. Free-field correction for condenser microphones, W. Koidan and S. Siegel. J. Acoust. Soc.

Am. 36, No. 11, 2233-2234 (Nov. 1964).

6090. Free-subgroups and normal subgroups of the modular group, M. Newman, 111. J. Math. 8, No. 2, 262-265 (1964).

6091. Frequency and time standards, G, E. Hudson. Electron. World 72, 20-23 (Aug. 1964).

6092. Frostbite: signs, prevention, and treatment,

J. R. Meyer-Arendt. Trail and Timberline, p. 3 (Jan. 1964).

6093. Functions for the calculation of entropy, enthalpy, and internal energy for real fluids using equations of state and specific heats,

J. G. Hust and A. L. Gosman. (Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado and National Bureau of Standards, Boulder, Colo., Aug. 19-21

1963) , Book, Advances in Cryogenic Engineering 9, Paper D-8, 227-233 (Plenum Press Inc., New York,

N. Y., 1964).

6094. Further analysis of the modulated subcarrier

technique of attenuation measurement, W. E. Little,

IEE Trans. Instr. Meas. IM-13, No. 2 and 3, 71-76

(June-Sept. 1964)

.

6095. Further observations of synchrotron radiation

decay, G. R. Ochs. J. Geophys. Res. 69, No. 5, 1014-1016 (Mar. 1, 1964).

6096. Gage blocks of superior stability. II. Fully

hardened steels. M. R. Meyerson and W. A. Pennington. Am. Soc. Metals Trans. Quart. 57, No. 1, 3-25 (Mar. 1964).

6097. Gage blocks of superior stability. III. The attainment of ultrastability, M. R. Meyerson and

M. S. Sola. Am. Soc. Metals Trans. Quart. 57, No.

1, 164-185 (Mar. 1964).

6098. Gallium-palladium alloys as dental filling

materials, R. M. Waterstrat and R. W. Longton, Public Health Reports 79, No. 7, 638-642 (July

1964) . 6099. Gas-phase photolysis of methyl iodide. Re- actions of hot methyl radicals with added organic

compounds, R. D. Doepker and P. Ausloos. J. Chem. Phys. 41, No. 6, 1865-1871 (Sept. 15, 1964).

6100. Gas-phase radiolysis of n-pentane. A study

of the decompositions of the parent ion and neutral excited pentane molecule, P. Ausloos and S. G. Lias. J. Chem. Phys. 41, No. 12, 3962-3970 (Dec.

15, 1964).

6101. Gaussian correlation functions: two-electron

systems, W. A. Lester and M. Krauss. J. Chem. Phys. 41, No. 5, 1407-1413 (Sept. 1, 1964).

6102. Generalized master equation for quantummechanical systems to all orders in the density,

J. Weinstock. Phys. Rev. 136, 2d Series, No. 4A, A879-A888 (Nov. 1964).

6103. Geomagnetic and solar data, J. V. Lincoln.

J. Geophys. Res. 69, No. 13, 28-41 (July 1, 1964).

6104. Gloss standards and glossmeter standarization,

H. K. Hammond. Am. Paint J. 48, 360-364 (Apr. 1964)

.

6105. Gold in dentistry, W. T. Sweeney and C. L. Burns. American Society for Metals Monograph on

Gold. Recovery, Properties, and Applications,

Chapt. 13, pp. 227-235 (D. Van. Nostrand Co. Inc., Princeton, N. J., 1964).

6106. Growth of oxalic acid single crystals from

solution: solvent effect on crystal habit, J. L. Torgesen and J. Strassburger. Science 146, No. 3640 53-55 (1964)

.

6107. Growth spirals on NiBr2 platelets, E. N. Sickafus and D. R. Winder. J. Appl. Phys. 35,

No. 8, 2541-2545 (Aug. 1964).

6108. Growth twins and branching of electrodeposited

copper dendrites, F. Ogburn. J. Electrochem. Soc.

Ill, No. 7, 870-872 (July 1964).

364
6109. Guide to dental materials 1964-1965,

G. C. Pafienbarger, J. W. Stanford, and W. T. Sweeney. Am. Dental Assoc. 2d ed. , 159 pages

(Chicago, 111., 1964).

6110. Hall generators: what, why and how much?

S. Rubin. IEEE Intern. Conv. Record, Pt. 8, p. 74

(Mar. 1964).

6111. Heater lead problem in calorimetry, D. C. Ginnings and E. D. West. Rev. Sci. Instr. 35, No. 8, 965-967 (Aug. 1964).

6111A. Heating performance of air-to-air heat pumps

at two Air Force housing projects, P. R. Achenbach, C. W. Phillips, and W. T. Smith. ASHRAE

J. 70, 390-407 (1964).

6112. High energy X-ray photon albedo, J. S. Pruitt. Nuclear Instr. Methods 27, 23 (1964).

6113. High-resolution infrared determination of the structure of carbon suboxide, W. J. Lafferty,

A. G. Maki, and E. K. Plyler. J. Chem. Phys. 40,

No. 1, 224-229 (Jan. 1, 1964). i2 6114. High resolution infrared spectra of C 2 H2 , C

12 C

13 H2 , and C2

3 H2 , W. J. Lafferty and R. J. Thibault. J. Mol. Spectry. 14, No. 1, 79-96

(Sept. 1964).

6115. High-resolution, low-energy electron spectrometer, J. A. Simpson. Rev. Sci. Instr. 35, No. 12, 1698-1704 (Dec. 1964).

6116. High temperature measurements and standards:

1000-3000°C, R. F. Walker. (Proc. Intern. Symp. High temperature technology, International Union

of Pure and Applied Chemistry, Asilomar, Pacific

Grove, Calif., Sept. 1963), Book, High Temperature

Technology, Suppl. to Pure and Applied Chem.,

pp. 7 (Butterworths Inc., Washington, D. C, 1964).

6117. High voltage Laue X-ray photography of large

single crystals, B. Paretzkin and H. S. Peiser. Science 146, 260 (1964)

.

6118. How people influence experimental results,

J. R. Cornog. Proc. Social Statistics Section

Convention, American Statistical Association,

Cleveland, Ohio, pp. 119-122 (1964).

6119. Human engineering in the design of a console for the comparison of volt boxes, P. H. Lowrie, Jr. 19th Annual Instrument Society of America Conference and Exhibit, Preprint 12.1-3-

64, pp. 1-8 (Oct. 12-15, 1964).

6120. Hydride and proton transfer reactions in- volving sec-propyl ions, R. P. Borkowski and

P. Ausloos. J. Chem. Phys. 40, No. 4, 1128-1132

(Feb. 1964).

6121. Hydrogen reaction with carbon and nickel evaporated films, V. R. Deitz and E. F. McFarlane. Carbon 1, 117-125 (1964). 6122. Hyperfine structure of the B

2 I+ state of CN,

H. E. Radford. Phys. Rev. 136, No. 6A, A1571-1575

(Dec. 14, 1964).

6123. Ice nucleation by photolyzed silver iodide,

G. Burley. Phil. Mag. 10, 527 (Sept. 1964).

6124. Impact noise in multifamily dwellings, R. D. Berendt. Bldg Res. 1, No. 1, 40-42 (Jan. -Feb. 1964).

6125. Impact parameter treatment of vibrational

excitation, F. H. Mies, J. Chem. Phys. 41, No. 3, 903-904 (Aug. 1, 1964).

6126. Incoherent inelastic neutron scattering and self-diffusion, R. Zwanzig, Phys. Rev. 133, No.

1A, A50-A51 (Jan. 1964)

.

6127. Inelastic electron scattering from rare gases. Determination of oscillator strengths in the continuum, C. E. Kuyatt and J. A. Simpson. (Proc. 3d Intern. Conf . Physics of Electronic and Atomic Collisions, London, England, 1963), Book, Atomic Col- lision Processes, ed. M. R. C. McDowell, p. 191-200

(North Holland Publ. Co., Amsterdam, The Netherlands, 1964).

6128. Influence of radiant energy source on bitumen

oxidation, K. G. Martin. J. Appl. Chem. (London)

14, No. 11, 514-524 (Nov. 1964).

6129. Influence of the refractive index profile in

VHF reflection from a tropospheric layer, J. R. Wait and C. M. Jackson. IEEE Trans. Ant. Prop.

AP-12, No. 4, 512-513 (July 1964).

6130. Infrared spectra of HCN from 2000 to 3600

cm

-1

, A. G. Maki and L. R. Blaine. J. Mol. Spectry. 12, No. 1, 45-68 (Jan. 1, 1964).

6131. Infrared spectra of NF, NCI, and NBr, D. E. Milligan and M. E. Jacox. J. Chem. Phys. 40,

No. 9, 2461-2466 (May 1964).

6132. Infrared spectroscopy of weak charge-transfer

complexes, E. E. Ferguson. J, Chim. Phys. 61, 257-262 (1964). 6133. Infrared spectrum and structure of gaseous

A1 2 0, M. J. Linevsky, D. White, and D. E. Mann.

J. Chem. Phys. 41, No. 2, 542-545 (July 15, 1964).

6134. Infrared spectrum of CF 2 , D. E. Milligan,

D. E. Mann, and M. E. Jacox. J. Chem. Phys. 41,

No. 5, 1199-1203 (Sept. 1, 1964).

6135. Infrared spectrum of HCO, D. E. Milligan and

M. E. Jacox. J. Chem. Phys. 41, 3032-3036 (Nov. 1964)

.

6136. Infrared studies of the photolysis of HN3 in inert and reactive matrices. The infrared spectrum

of NH, D. E. Milligan, and M. E. Jacox. J. Chem. Phys. 41, No. 9, 2838-2841 (Nov. 1964).

6137. Initial preparation and metastable transitions

in mass spectra, H. M, Rosenstock, V. H. Dibeler, and F. N. Harllee. J. Chem. Phys. 40, No. 2, 591-594 (Jan. 15, 1964).

6138. Inline waveguide attenuator, W„ Larson. IEEE Trans. Microwave Theory Tech. Corres. Sec. MTT-12,

No. 3, 367-368 (May 1964).

6139. Insertion loss concepts, R. W. Beatty. Proc.

IEEE 52, No. 6, 663-671 (June 1964).

6140. Instant color correction, C. S. McCamy. Mod. Photo. 28, No. 1, 66-67 (Jan. 1964).

6141. Intense resonance line sources for photochemical work in the vacuum ultraviolet region,

H. Okabe. J. Opt. Soc. Am. 54, No. 4, 478-481

(Apr. 1964).

6142. Unassigned.

6143. Intensity of the forbidden X

2n 3 2 -X2 Uiy2 satellite bands in the infrared spectrum of nitric oxide, T. C. James. J. Chem. Phys. 40, No.

3, 762-771 (Feb. 1, 1964).

6144. Intensity of the quadrupole fundamental of molecular hydrogen rotation-vibration interaction

correction, T. C. James and W. Klemperer. J. Chem. Phys. 40, No. 3, 914-915 (Feb. 1, 1964).

6145. Interaction of carbon dioxide with carbon

adsorbents below 400° c, V. R. Deitz, F. G. Carpenter, and R. G. Arnold, Carbon 1, 245 (1964).

6146. Interferometer test of the 26-inch refractor

at Leander McCormick Observatory, J. B. Saunders, Astron. J. 69, No. 6, 449 (Aug. 1964).

6147. Interlaboratory evaluation of procedures for tongue-tearing strength of woven fabrics, E. B. Randall, Jr. Mater. Res. Std. 4, No. 2, 53-61

(Feb. 1964).

6148. Internal friction in rutile containing point

defects, J. B. Wachtman, Jr.^ and L. R. Doyle,

Phys. Rev. 135A, 276 (1964).

6149. International comparison of dielectric

measurements, H. E. Bussey, J. E. Gray, E. C. Bamberger, E. Rushton, G. Russell, B. W. Petley, and D. Morris, IEEE Trans. Instr. Meas. IM-13,

No. 4, 305-311 (Dec. 1964). 365
1964

6150. International intercomparison of standards and microwave power measurements, G. F. Engen. (Proc. 3d Intern. Measurements Conf . , Stockholm, Sweden, 1964) Acta Imeko 1, 337-346 (1964). 6151. International geophysical calendar for the years of the quiet sun 1964-1965, A. H. Shapley

and J. V. Lincoln. J. Atmospheric Terrest . Phys

.

26, No. 1, 151-157 (Jan. 1964); Nature 201, 11-13

(Jan. 4, 1964). 6152. International symposium on the Solar Spectrum,

C. E. Moore. Utrecht, Aug. 26-31, 1963, Appl. Opt.

3, No. 1, 12 (Jan. 1964). 6153. Interpretation of frequency shifts due to electron exchange collisions, P. L. Bender. Phys.

Rev. 134, No. 5A, A1174-A1180 (June 1, 1964).

6154. Interpretation of maxima in the absorption of soft X-ray, J. W. Cooper. Phys. Rev. Letters 13, No. 25, 762-764 (Dec. 21, 1964).

6155. Interpretation of potentiometric titrations

of weak acids in methanol-water solvents, K. C. Ong, R. A. Robinson, and R. G. Bates. Anal. Chem.

36, No. 10, 1971-1972 (Sept. 1964). 6156. Introduction, V. J. Johnson. Am. Soc. Refrig- erating and Air Conditioning Engineers Symp., The Role Cryogenics in Playing in Expanding Mechanical Engineering at the semi-annual meeting of the Am. Soc. of Heating, Refrigerating and Air Conditioning

Engineers, New York, N. Y. , Feb. 11-14, 1963, p. iii-iv (1964). 6157. Introduction, R. B. Scott. Book, Technology and

Uses of Liquid Hydrogen, Chapt. 1, pp. 1-8 (Pergamon

Press Ltd., London, England, 1964).

6158. Investigation of plasma boundaries with elec- tromagnetic surface waves, H. W. Wassink and A. J. Estin. J. Appl. Phys. 35, No. 10, 2795-2800 (Oct. 1964)

.

6159. Ionizing radiation and constitution of the atmosphere, T. E. VanZandt . Proc. URSI XlVth General Assembly, Tokyo, Japan, Sept. 1963, XIII, 158-164 (1964). 6160. Ionosonde studies of some chemical releases in

the ionosphere, J. W. Wright. (Proc. NATA Advanced

Study Institute, Sheikampen, Norway, Apr. 17-26, 1963) , Book, Electron Density Distribution in the Ionosphere and Exosphere, p. 116-137 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1964). 6161. Ionosphere explorer I satellite: first ob- servations from the fixed-frequency topside sounder

satellite, W. Calvert, R. W. Knecht, and T. E. VanZandt. Science 146, No. 3642, 391-395 (Oct. 16, 1964) . 6162. Ionospheric absorption in conjugate regions

and possible oscillation of the ionosphere,

H. J. A. Chi vers and J. K. Hargreaves. Nature,

202, 891-893 (May 30, 1964). 6163. Ionospheric storms, S. Matsushita. Proc. URSI XlVth General Assembly, Tokyo, Japan, Sept. 1963, XIII, 169-180 (1964). 6164. Ionospheric winds: motions into night and sporadic E correlations, N. W. Rosenberg, H. D. Edwards, and J. W. Wright. (Proc. 4th Intern. Space Science Symp., Warsaw, June 4-10, 1963),

Book, Space Research, ed. P. Muller. IV, 171-181

(North Holland Publ. Co., Amsterdam, The Netherlands, 1964). 6165. Is life possible on other planets? W. R. Bozman. Sci. Children 2, No. 4, 7 (Dec. 1964).

6166. Isotopic fractionation of uranium related

to roll features in sandstone, Shirley Basin, Wyoming, J. N. Rosholt , E. N. Harshman, W. R. Shields, and E. L. Garner. Econ. Geology 59, 570

(1964).

6167. Ixiolite and other polymorphic types of FeNb04, R. S. Roth and J. L. Waring. Am. Mineralogist 49, Nos. 3 and 4, 242-246 (Mar. -Apr. 1964).

6168. Jet thinning devices for preparation of A12 03 electron microscope specimens, N. J. Tighe, Rev.

Sci. Instr. 35, No. 4, 520-521 (Apr. 1964).

6169. Kinetics and mechanism of the low-cubic to hexagonal phase transformation of silver iodide,

G. Burley. J. Phys. Chem. 68, No. 5, 1111-1113

(1964)

.

6170. Kinetics of the acid-catalyzed hydrolysis of acetal in dimethyl sulfoxide-water solvents at

15, 25, and 35°, R. K. Wolford. J. Phys. Chem.

68, No. 11, 3392-3398 (1964). 6171. Kikuchi pattern from a silicon wedge, F. A. Fowler. Acta Cryst. 17, No. 7, 869-871 (July 1964).

6172. K-ionization cross sections for relativistic

electrons, J. W. Motz. and R. C. Placious. Phys.

Rev. 136, No. 3A, A662-A665 (Nov. 2, 1964).

6173. Laboratory studies of helium ion loss processes

of interest in the ionosphere, E. E. Ferguson,

F. C. Fehsenfeld, D. B. Dunkin, A. L. Schmeltekopf

,

and H. I. Schiff. Planetary Space Sci. 12, 1169-

1171 (Dec. 1964).

6174. Lasers for length measurement, A. G. McNish. Science 146, No. 3641, 177-182 (Oct. 1964).

6175. Leaf temperature and energy exchange, D. M. Gates, Arch. Meteorol. Geophys. Bioklimatol. 12, No. 2, 321-336 (1964).

6176. LF-VLF frequency and time services of the National Bureau of Standards, D. H. Andrews.

(Proc. 19th Annual ISA Conf. and Exhibit, New

York, N. Y., Oct. 12-15, 1964), ISA Preprint

21.3-2-64 (1964).

6177. Light Scattering from Dilute Polymers

Solutions, Book, D. Mclntyre and F. Gornick, Editors. International Science Review Series 3 (Gordon and Breach, New York, N. Y., July

1964).

6178. Linewidths in the 2-0 band of carbon monoxide broadened by nitrogen and hydrogen,

T. C. James and E. K. Plyler. J. Chem. Phys.

40, No. 1, 221-223 (Jan. 1, 1964), 6179. Liouville representation of quantum mechanics

with application to relaxation, U. Fano. (Proc. Lectures on the Many-Body Problems 5th Intern. School of Physics, Revello, Italy, Apr. 17- May 4, 1963) , Book, Lectures of the Many-Body

Problems 2, 1-294 (Academic Press Inc., New

York, N. Y., 1964).

6180. Liquid hydrogen bubble chambers, H. P. Hernandez and B. W. Birmingham. Book, Technology

and Use of Liquid Hydrogen, Chapt. 8, pp. 228-

284 (Pergamon Press Inc., New York, N. Y., 1964)

.

6181. Local curvature of wavefronts in an optical

system, J. A. Kneisly, II. J. Opt. Soc. Am. 54, No. 2, 229-235 (Feb, 1964).

6182. Long lived effects in the D region after

the high-altitude nuclear explosion of July 9, 1962, A. H. Brady, D. D. Crombie, A. G. Jean,

A. C. Murphy, and F. K. Steele. J. Geophys.

Res. 69, No. 9, 1921-1924 (May 1, 1964).

6183. Low temperature infrared studies of the chemistry of free radicals, M. E. Jacox and

D. E. Milligan, Appl. Opt. 3, No. 7, 873-876

(July 1964).

366
6184. Low temperature infrared study of intermediates in the photolysis of HNCO and DNCO, M. E. Jacox and D. E. Milligan. J. Chem. Phys. 40,

No. 9 , 24 57 -24 60 (May 1964).

6185. Low temperature magnetic transitions in lanthanon trichlorides, J. C. Eisenstein, R. P. Hudson, and B. W. Mangum. Physics Letters 12, No. 1, 5 (Sept. 1, 1964).

6186. Magnetic properties of ilmenite-hematite

solid solutions, C. F. Jefferson and R. G. West.

J. Am. Ceramic Soc. 47, No. 11, 544-548 (Nov. 1964)

.

6187. Magnetic tape recording and reproducing of atmospheric noise with a wide dynamic range,

E. C. Bolton. Rev. Sci. Instr. 35, No. 3, 377-

380 (Mar. 1964).

6188. Making precision voltage measurements on

Zener diodes, VV. G. Eicke, Jr. IEEE Trans.

Commun. Electron. 83, No. 74, 433-438 (Sept. 1964).

6189. Mass spectroraetric investigation of the high temperature reaction between nickel and

chlorine, J. D. McKinley. J. Chem. Phys. 40,

xNo. 1, 120-125 (Jan. 1, 1964).

6190. Mass spectrometric investigation of the nickel-bromine surface reaction, J. D. McKinley. J. Chem. Phys. 40, No. 2, 576-581

(Jan. 1964).

6191. Mass spectrometric investigation of the yttrium-chloride surface reaction, J. D. McKinley. J. Chem. Phys. 41, No. 9, 2814-2817

(Nov. 1, 1964).

6192. Mass spectrometric study of the isotopic

exchange rate of oxygen atoms with O2, NO and

NC-2, J. T. Herron and F. S. Klein. J. Chem.

Phys. 40, No. 9, 2731 (May 1964).

6193. Mass spectrometric study of the photoionization of acetylene and acetylene-d2 , V. H. Dibeler and R. M. Reese. J. Chem. Phys. 40,

No. 7, 2034-2035 (Apr. 1, 1964).

6194. Mass spectrometric study of the production

of methylamine from azomethane, M. E. Wacks.

J. Phys. Chem. 68, No. 9, 2725-2726 (Sept. 1964)

.

6195. Mass spectrometric study of the reactions

of 0 atoms with NO and N02 , F. S. Klein and

J. T. Herron. J. Chem. Phys. 41, No. 5, 1285-1290

(Sept. 1, 1964).

6196. Mass spectrometry, R. M. Reese and F. N. Harllee. Anal. Chem. 36, No. 5, 278R-295R

(Apr. 1964).

6197. Matter transport in solids, R. E. Howard

and A. B. Lidiard. Rept. Progr. Phys. XXVII, 161-240 (1964). 6198. Measurement of effective temperatures of microwave noise sources, J. S. Wells, W. C. Daywitt, and C. K. S. Miller, IEEE Trans. Instr. Meas. IM-13, No. 1, 17-28 (Mar. 1964).

6199. Measurement of photochemical degradation in certain plastics by color reactions with

phenylenediamines, V. E. Gray and J. R. Wright.

J. Appl. Polymer Sci. 8, No. 4, 1505-1519 (1964). 6200. Measurement of very-high pressures, E. C. Lloyd and A. Giardini. Acta Imeko 2, 305 (1964).

6201. Measuring the directivity of a directonal

coupler using a sliding short-circuit and an ad- justable sliding termination, R. W. Beatty. IEEE Trans. Microwave Theory Tech. MTT-12, No. 3, 283 (May 1964).

6202. Mechanical and dielectric relaxation of crystalline polymers in relation to degree of

crystallinity and morphology, E. Passaglia,

SPE Trans. 4, No. 3, 169-177 (July 1964).

6203. Mechanism of inactivation of bacteriophages

by metals, N. Yamamoto, C. W. Hiatt, and W. Haller. Biochim. Biophys. Acta 91, 257-261

(1964)

.

6204. Mechanism of the photolysis of ethane at 1470 A, R. F. Hampson, Jr., J. R. McNesby,

H. Akimoto, and I. Tanaka. J. Chem, Phys. 40, No. 4, 1099-1105 (Apr. 1964).

6205. Medical applications, E. F. Brentari

and R. V. Smith. ASHRAE Guide and Data Book, Chapt. 68, p. 773-778 (Am. Soc. Heating, Refrig. Air Conditioning Engrs. Inc., New York, N. Y., 1964).

6206. Metastable levels in the continuum and the independent particle model, F. Prats and U. Fano. (Proc. 3d Intern. Conf. Physics of Electronic and Atomic Collisions, London, England,

1963), Book, Atomic Collision Processes, ed.

Mo R. C. McDowell, p. 600-605 (North Holland

Publ. Co., Amsterdam, The Netherlands, 1964).

6207. Microscopic-astrophysics and the development of astrophysical laboratories, R. N. Thomas. Bull. Centre Intern, d' Astrophysique

de 1 'Observatoire de Nice, No. 1, p. 7-16

(Nice, France, 1964).

6208. Microwave and high frequency calibration

services of the National Bureau of Standards

(Parts I-IV), R. E. Larson. IEEE Trans. Microwave Theory Tech. Part I, MTT-12, No. 4, 480-482

(July 1964); Part II, MTT-12, No. 5, 572-576

(Sept. 1964); Part III, MTT-12, No. 6, 623-624

(Nov. 1964)

.

6209. Microwave calibration techniques at the National Bureau of Standards, R. E. Larson.

(Proc. 3d Intern. Measurements Conf.), Acta

IMEKO 3, 383-393 (1964). 6210. Microwave propagation in an overdense bounded magnetio-plasma, B. Wieder. Phys. Fluids 7, No. 7, 964-972 (July 1964).

6211. Microwave spectroscopy, D. R. Lide. Ann.

Rev. Phys. Chem. 15, 225-250 (1964). 6212. Microwave spectrum of lithium chloride,

D. R. Lide, Jr., P. Cahill, and L. P. Gold.

J. Chem. Phys. 40, No. 1, 156-159 (Jan. 1964).

6213. Microwave spectrum of the SO radical, F. X. Powell and D. R. Lide. J. Chem. Phys. 41, No. 5, 1413-1419 (Sept. 1964).

6214. Microwave studies of butadiene derivatives.

II. Isoprene, D. R. Lide, Jr., and M. Jen. J. Chem. Phys. 40, No. 1, 252-253 (Jan. 1964).

6215. Minutes of the Meeting at the Ohio State University, Columbus, Ohio, of the Triple Com- mission for Spectroscopy, June 12, 1963,

C. E. Moore. J. Opt. Soc. Am. 54, No. 3, 425-

432 (Mar. 1964)

.

6216. Modern methods of analysis for design of cryogenic equipment and processes, T. R. Strobridge and D. B. Mann. Am. Soc. Refrigerating and Air Conditioning Engineers Symp. , The Role Cryogenics is Playing in Expanding

Mechanical Engineering, Am. Soc. Refrigerating

and Air Conditioning Engineers, New York, N. Y., Feb. 11-14 1964, p. 25-37 (1964). 6217. Modulus of rupture of glass in relation to fracture pattern, J. J. Kerper and T. G. Scuderi. Am. Ceram. Soc. Bull. 43, No. 9, 622- 625 (Sept. 7, 1964).

6218. Morphology of thermally evaporated zinc cleavage surfaces, A. W. Ruff, Jr. J. Chem.

Phys. 41, No. 5, 1204-1213 (Sept. 1, 1964). 367
19(5 1 6218A. Multiple scattering corrections for proton

range measurements, M. J. Berger and S. M. Seltzer. Natl. Acad. Sci.-Natl. Res. Council

Publ. 1133, No. 5. Studies in Penetration of Charged Particles in Matter. Nuclear Science

Series Report 39, pp. 69-98 (1964). 6219. National Bureau of Standards Central Radio Propagation Laboratory, C. G. Little. Boulder, Astron. J. 69, No. 9, 698-700 (Nov. 1964).

6220. National standard reference data program,

E. L. Brady and S. A. Rossmassler. D. C. Libraries 35, No. 4, 57-61 (Oct. 1964).

6221. Natural electromagnetic phenomena below

30 kc/s, R. M. Gallet. NATA Advance Study In- stitute, Bad Hamberg, 1963, pp. 167-204 (Plenum Press Inc., New York, N. Y. , 1964).

6222. Nighttime variations of F-region electron

density profiles at Puerto Rico, T. Shimazaki.

J. Geophys. Res. 69, No. 13, 2781-2797 (July

1, 1964).

6223. NMR studies of asymmetric ethanic rotators:

1, 2-disubstituted propanes, H. R. Finegold,

J. Chem. Phys. 41, No. 6, 1808-1818 (Sept. 1964).

6224. Nonequilibrium thermodynamics of canonically

invariant relaxation processes, H. C. Andersen,

K. E. Shuler, I. Oppenheim, and G. H. Weiss, J. Chem. Phys. 41, No. 10, 3012-3019 (Nov. 1964).

6225. Non-equilibrium thermodynamics of creep in polycrystals, R. E. Nettleton. Physica 20, 1989-

2002 (1964). 6226. Nonlinear ambipolar diffusions of an iso- thermal plasma across magnetic field, E. R. Mosburg, Jr., and K. B. Persson. Phys. Fluids 7, No. 11, 1829-1833 (Nov. 1964). 6227. Nonresonant absorption .nd collision diameters

in the foreign-gas broadening of symmetric top molecules, G. Birnbaum and A. A. Maryott. J. Chem. Phys. 41, No. 1, 154-157 (July 1, 1964).

6228. Nonspattering solder flux, W. R. Bjorklund,

Rev. Sci. Instr. 35, No. 10, 1369-1370 (Oct. 1964)

.

6229. Note on "interferometric measurement of vibration amplitudes" K. D. Mielenz, Appl. Opt.

3, 542 (Apr. 1964).

6230. Note on the partition function, M. Newman.

Am. Math. No. 71, 1022 (1964). M. Newman,

J. R. Smart, Symplectic modular groups, Acta Arithmetica 9, 83-89 (1964).

6231. N2 oscillator strength from arc spectroscopic

measurements using an analog computer, J. B. Shumaker. Proc. 6th Intern. Symp. Ionization Phenomena in Gases VII, No. 15, 311-313 (June

1964)

.

6232. Nuclear magnetic relaxation of the impurity

nucleus in dilute ferromagnetic alloys, R. L. Streever. Phys. Rev. 134, No. 6A, A1612-A1617

(June 1964).

6233. Nuclear magnetic resonance in lead alloys,

R. J. Snodgrass and L. H. Bennett. Phys. Rev.

134, No. 5A, A1294 (June 1, 1964).

6234. Nuclear magnetic resonances of 6

9

Ga and 7

1

Ga

in gallium-substituted yttrium iron garnet,

R. L. Streever and G. A. Uriano. Phys. Rev. Letters 12, No. 22, J516-1-3 (June 1, 1964).

6235. Nucleation characteristics of static liquid nitrogen and liquid hydrogen, J. Hord, R. B. Jacobs, C. C. Robinson, and L. L. Sparks. J. Eng. Power 86, 485-494 (Oct. 1964).

6236. Numerical analysis of the thermal ment of occupied underground spaces with

finite cover using a digital computer, T. Kusuda

and P. R. Achenbach. ASHRAE Trans, and J. 6, No. 6, 99-105 (June 1964).

6237. Obscurities of oscillator noise, L. Fey,

W. R. Atkinson, and J. Newman. Proc. IEEE Letter

to Editor 52, 104-105 (Jan. 1964).

6238. Observation of FeO in absorption by flash heating and kinetic spectroscopy, A. M. Bass,

N. A. Keubler, and L. S. Nelson. J. Chem. Phys. Note 40, No. 10, 3121 (May 15, 1964).

6239. Observation of optically forbidden transitions in the continuum of the rare gases by electron energy loss measurements, J. A. Simpson,

S. R. Mielczarek, and J. Cooper. J. Opt. Soc. Am. 54, No. 2, 269-270 (Feb. 1964).

6240. Observations of carbon monoxide and oxygen

on tantalum with the field emission microscope,

R. Klein. J. Chem. Phys. 41, No. 2, 571 (July

1964)

.

6241. Observatory report—Joint Institute for Laboratory Astrophysics of the National Bureau

of Standards and University of Colorado, Boulder, Colorado, L. M. Branscomb. Astron. J. 69, No. 9, 700-703 (Nov. 1964).

6242. Observed line shapes of collective excitations in Al, Be, and Ge, N. Swanson. J. Opt.

Soc. Am. 54, No. 9, 1130-1133 (Sept. 1964).

6243. On a problem of G. Sansone, M. Newman. Ann.

Mat. LXV, 27-34 (1964). 6244. On associated ions in polyelectrolytes and trapped Brownian trajectories, J. L. Jackson

and S. R. Coriell. J. Chem. Phys. Note 40,

No. 5, 1460-1461 (Mar. 1, 1964).

6245. On-line data handling system for the National Bureau of Standards LINAC, J. E. Leiss, J. Broberg, R. A. Schrack, and J. M. Wyckoff. IEEE

Trans. Nuclear Sci. NS-11, No. 3, 331-337 (June

1964)

.

6246. On matching problems, J. Edmonds, A. J. Goldman, C. Witzgall, and C. T. Zahn, Jr. Proc. ARO Working Group on Computers, ARO-D

Report 65-1, pp. 46-50 (Office, Chief Res. &

Develop., Feb. 1964).

6247. On phase changes in very-low-frequency propagation induced by an ionospheric depression of finite extent, J. R. Wait. J. Geophys. Res. 69, No. 3, 441-445 (Feb. 1, 1964).

6248. On the anomalous NMR linewidth in lithium

and sodium, D. Zamir, R. C. Wayne, and R. M. Cotts. Phys. Rev. Letters 12, No. 12, 327 (Mar.

23, 1964)

.

6249. On the concentrations of vibrationally

excited 02 formed in the flash photolysis of

NO2, A. M. Bass and D. Garvin. J. Chem. Phys. Letter 40, No. 6, 1772-1773 (Mar. 15, 1964).

6250. On the constitution of the topside ionosphere,

R. W. Knecht, H. Rishbeth, and T. E. VanZandt,

(Proc. NATO Advanced Study Inst., Skeikampen,

Norway, Apr. 17-26, 1963), Book, Electron Density Distribution in the Ionosphere and Exosphere,

p. 348-350 (North Holland Publ. Co., Amsterdam,

The Netherlands, 1964).

6251. On the effect of heterogeneity in molecular

weight on the sedimentation equilibrium second

virial coefficient of polymers in good solvents,

I. H. Billick. J. Phys. Chem. 68, No. 7, 1798-

1800 (July 1964)

.
1964

6252. On the geomagnetic effect of the starfish high-altitude nuclear explosion, H. Maeda,

S. Matsushita, M. Shirgaokar, and M. Yashuhara.

J. Geophys. Res. 69, No. 5, 917-945 (Mar. 1, 1964).

6253. On the height distribution of the ratio of negative ion and electron densities in the lowest ionosphere, G. C. Reid, D. K. Bailey, and H. Leinbach. J. Atmospheric Terrest. Phys.

26, No. 1, 145-147 (Jan. 1964)

.

6254. On the identity of three generalized master

equations, R. Zwanzig. Physica 30, 1109-1123 (1964) 6255. On the implication of diurnal, seasonal and geographical variations in composition of high

atmosphere from F-region measurements, J. W. Wright. (Proc. NATO Advanced Study Institute, Sheikampen, Norway, Apr. 17-26, 1963), Book, Electron Density Distribution in the Ionosphere

and Exosphere, p. 186-198 (North Holland Publ.

Co., Amsterdam, The Netherlands, 1964).

6256. On the location of the zeros of some in- frapolynomials with prescribed coefficients,

0. Shisha and J. L. Walsh. Pacific J. Math. 14, No. 3, 1103-1109 (1964).

6257. On the measurement of random chain scission

by stress relaxation, H. Yu. Polymer Letters 2, 631-635 (June 1964).

6258. On the possibility of the measurement of

the nuclear 2 -pole deformation, M. Danos,

W. Greiner, and C. B. Kohr. Physics Letters 2, No. 4, 344 (1964). 6259. On the relaxation of the hard sphere Rayleigh and Lorentz gas, k. Andersen and tC, E. Shuler. J. Chem. Phys. 40, 633 (Feb. 1, 1964).

6260. On the structure of inf rapolynomials with

prescribed coefficients, 0. Shisha. Pacific J. Math. 14, No. 3, 1039-1051 (1964).

6261. On the theory of Schumann resonances in the earth-ionosphere cavity, J. R. Wait. Can. J. Phys. 42, 575-582 (Apr. 1964).

6262. On the twilight sodium emission—1: Observations from a southern hemisphere station,

M. Gadsden. Ann. Geophys. 20, No. 3, 261-272

(1964)

.

6263. On the twilight sodium emission—2: A theoretical model of sodium abundance, M. Gadsden.

Ann. Geophys. 20, No. 4, 383-396 (Oct. -Dec. 1964).

6264. On the validity of the Einstein-Smoluchowski

theory of light scattering, R. Zwanzig. J. Am. Chem. Soc. 86, 3489-3493 (Mar. 30, 1964)

.

6265. On trapped trajectories in Brownian motion,

J. L. Jackson and S. R. Coriell. J. Math. Phys.

5, No. 8, 1075-1078 (Aug. 1964).

6266. Open-probe thermocouple control of radio- frequency heating, A. W. Ruff, Jr. Rev. Sci. Instr. 35, No. 6, 760-761 (June 1964).

6267. Optical constants in the vacuum ultraviolet

and electron energy losses, L. L. Marton. J. Quant. Spectry. Radiative Transfer 2, 671-678

(May 1964)

.

6268. Optical constants of thin films from the characteristic electron energy losses, R. E. Lavilla and H. Mendlowitz. J. Phys. 25, Nos.

1 & 2, 114-118 (Jan. -Feb. 1964).

6269. Optical depolarization and scintillation

Meyer-Arendt. Proc. 3d Tropospheric Refraction

Effects Meeting 1, 115-123 (Nov. 1964).

6270. Optical detection of microwave transitions between excited electronic states of CN and the identification of the transitions involved,

K. M. Evenson, J. L. Dunn, and H. P. Broida. Phys.

Rev. 136, No. 6A, A1566-A1571 (Dec. 14, 1964).

6271. Optical heterodyne detection of the forwardstimulated Brillouin scattering, D. A. Jennings

and H. Takuma. Appl. Phys. Letters 5, 241-242

(Dec. 1964).

6272. Optical investigations of film formation and

removal on gold anodes in acidic oxalate solu-

, tions, W. E. Reid and J. Kruger. Nature 203,

No. 4943, 402-403 (July 25, 1964)

.

6273. Optical studies at high pressures, L. S. Whatley, E. R. Lippincott, A. VanValkenburg, and C. E. Weir. Science 144, No. 3621, 968-976(May 22, 1964).

6274. Optically observed inner shell electron excitation in neutral Kr and Xe, K. Codling and

R. P. Madden. Phys. Rev. Letters 12, No. 4, 106-107 (Jan. 1964).

627 5. Optically pumped magnetometers and related

experiments in high magnetic fields, P. L. Bender. Book, Quantum Electronics III, ed. P. Grivet and N. Bloembergen I, 263-273 (Columbia University Press, New York, N. Y. , 1964).

6276. Optimization of the Czerny-Turner spectrometer, A. B. Shafer, L. R. Megill, and L. A. Droppleman. J. Opt. Soc. Am. 54, No. 7, 879-

887 (July 1964).

6277. Oxidation of asphalt in the presence of ozone,

J. R. Wright and P. G. Campbell. Am. Chem. Soc. Div. Petroleum Chem. Preprint 9, No. 2, B99

(Apr. 1964).

6278. Unas signed.

6279. Oxygen atom reactions with condensed olefins,

M. D. Scheer and R. Klein. Science 144, No. 3623, 1214 (June 1964).

6280. Ozonation of asphalt flux, P. G. Campbell

and J. R. Wright. Am. Chem. Soc. Div. Petroleum

Chem. Preprint 9, No. 3, 147-160 (Aug. 1964)

;

Ind. Eng. Chem. Product Res. Develop. 3, No. 3, 186-194 (Sept. 1964).

6281. Pair correlations in closed-shell systems,

M. Krauss and A. W. Weiss. J. Chem. Phys. 40,

No. 1, 80-85 (Jan. 1964).

6282. Phase diagrams for ceramists, E. M. Levin,

C. R. Robbins, and H. F. McMurdie. Book, Am. Ceramic Society Inc., Columbus, Ohio, 1964.

6283. Phase equilibria studies in mixed systems

of rare earth and other oxides, R. S. Roth. Book, Progress in Science and Technology of the Rare Earths, Ed. L. Ewring, 1, 167-202 (Pergamon

Press Inc., New York, N. Y. , 1964).

6284. Phase variations in V.L.F. propagation, C. J. Chilton, D. D. Crombie, and A. G. Jean. AGARDograph 74, Propagation of Radio Waves at Frequencies Below 300 Kilocycles, Chapt. 19, p. 257-290 (Pergamon Press Inc., New York, N.Y.

,

1964)

.

6285. Photochemical changes in thin-layer chromatograms of polycyclic, aromatic hydrocarbons,

M. N. Inscoe. Anal. Chem. 36, No. 13, 2505-2506

(Dec. 1964).

6286. Photoelimination of ethylene from 2-pentanone,

P. Ausloos and R. E. Rebbert. J. Am. Chem. Soc.

86, No. 20, 4512 (Oct. 20, 1964)

.

369
1964

6287. Photolysis of cellulose in a vacuum with 2537A light, J. H. Flynn and W. L„ Morrow.

J. Polymer Sci. A2, No. 1, 81-89 (Jan. 1964).

6288. Photooxidation of asphalts in the presence

of ozone, J. R. Wright and P. G. Campbell.

Am. Chem. Soc. Div. Petroleum Chem. Preprint

9, No. 3, 161-174 (Aug. 1964).

6289. Physical processes in the D-region of the ionosphere, G. C. Reid. Rev. Geophys. 2, No. 2, 311-333 (May 1964).

6290. Physical properties of cements, based on zinc oxide hydrogenated rosin, o-ethoxybenzoic

acid and eugenol, S. Civjan and G. M. Brauer.

J. Dental Res. 43, No. 2, 281-299 (Mar. -Apr.

1964)

.

6291. Plastics, G. M. Kline. Americana Annual,

p. 532 (Americanan Corp., Chicago, 111., 1964).

6292. Plastics and the dental market, G. M. Brauer. Plastics World 22, No. 10, 12 (Oct. 1964).

6293. Polar-cap absorption, D. K. Bailey. Planetary

Space Sci. 12, No. 495-541 (May 1964).

6294. Polar modes of lattice vibration and polaron

coupling constants in rutile (Ti02) , D. M. Eagles.

J. Phys. Chem. 25, No. 11, 1243-1251 (Nov. 1964).

6295. Polarized electrons and positrons by tagging

technique, H. Olsen and L. C. Maximon. Phys.

Rev. Letters 13, No. 3, 112-114 (July 1964).

6296. Polarography as an analytical tool, J. K. Taylor. J. Assoc. Offic. Agri. Chem. 47, No. 1, 21-27 l Jan. 1964).

6297. Polarons in an electric field, D. M. Larsen.

Phys. Rev. 133, No. 3A, A860-A866 (Feb. 3, 1964).

6298. Polymer compression: visual observations

on stressed biaxially oriented nylon 66, J. Powers and A. VanValkenberg. J. Polymer Sci. B2,

No. 5, 533-536 (May 1964).

6299. Polymer property-structure studies at the National Bureau of Standards; thermal stability,

G. M. Kline. Proc. European Plastics Congress,

Milano, Italy, Sept. 20-23, 1964.

6300. Polymorphism of AB03 - type rare earth borate

solid solutions, R. S Roth, J. L. Waring, and

E. M. Levin. (Proc. Third Rare Earth Research

Conf., Apr. 2-24, 1963), Book, Rare Earth Research, Chapter on Structure of Rare Earth Compounds, p. 1030-1055 (Gordon and Breach Science

Publ. Inc., New York, N. Y. , 1964).

6301. Potential distribution in a rectangular semiconductor bar for use with four-point probe

measurements, M. J. Reber. Solid State Electron.

7, No. 7, 525-529 (July 1964).

6302. Potential distribution method in equilibrium

statistical mechanics, J. L. Jackson and L. S. Klein. Phys. Fluids 7, No. 2, 228-231 (Feb. 1964).

6303. Precession equation of a spinning particle in nonuniform fields, U. Fano. Phys. Rev. 133, No.

3B, B828-B830 (Feb. 10, 1964)

.

6304. Precise determination of the area of guarded electrodes for accurate dielectric measurements

on solid-disk specimens, W. P. Harris. (Proc. Conf. ;;lectric Insulation), 1963 Annual Report,

Natl. Acad. Sci. -Natl. Res. Council Publ. 1141,

p. 71 (1964).

6305. Precision detector for complex insertion

ratio measuring systems, C. M. Allred and R. A. Lawton. IEEE Trans. Instr. Meas. IM-13, No 2 & 3, 76-81 (June-Sept. 1964).

6306. Prediction of ionospheric characteristics at CRPL for sky-wave radio propagation at high fre- quencies, K. Davies. Telecommunications J. 31,

No. 12, 339-350 (Dec. 1964).

6307. Preliminary thermodynamic properties of

neon, R. D. McCarty and R. B. Stewart. (Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado and National Bureau of Standards, Boulder, Colo.,

Aug. 19-21, 1963), Book, Advances in Cryogenic Engineering 9, Paper B-4, 161-167 (Plenum Press

Inc., New York, N. Y., 1964).

6308. Preparation and properties of dif luoroborane,

T. D. Coyle, J. J. Ritter, and T. C. Farrar.

Proc. Chem. Soc. p. 25 (Jan. 1964).

6309. Present status of project HAYSTAQ, E. C. Marden and H. R. Koller. (Proc. 3d Annual Meeting Comm. Intern. Cooperation and Information Retrieval Among Examining Patent Offices,

Vienna, Austria, Sept. 17-26, 1963), Book, Information Retrieval Among Examining Patent

Offices, Ed. H. Pfeffer, pp. 163 (Spartan Books

Inc., Baltimore, Md., 1964).

6310. Presidential address before the Electrochemical Society Meeting, Toronto, Canada, May 5, 1964, W. J. Hamer. J. Electrochem. Soc.

Ill, No. 7, 145C-147C (July 1964).

6311. Pressure broadening of DC1 by HC1 and HC1

by DC1. A comparison of experimental results with Anderson's theory, T. C. James and R. J. Thibault. J. Chem. Phys. 40, No. 2, 534-540

(Jan. 15, 1964).

6312. Pressure-induced trapping phenomenon in silver

iodide, H. C. Duecker and E. R. Lippincott. Science 146, 1295-1297 (1964). 6313. Progress report on aerosol packaged products,

H. F. Wollin and S. Hasko, Aerosol Age Mag. 9, No. 9, 20 (Sept. 1964).

6314. Project FIST: fault isolation by semi- automatic techniques, G. Shapiro, G. J. Rogers,

0. B. Laug, and P. M. Fulcomer, Jr. IEEE Spectrum pp. 98-111 (Aug. 1964); pp. 130-144

(Sept. 1964).

6315. Propagation and technical factors in radio spectrum utilization, RADIO SPECTRUM UTILIZATION,

J. W. Herbstreit, Editor. A report of the Joint Technical Advisory Committee of the Institute of Electrical and Electronics Engineers, Inc. and

the Electronic Industries Association, Chapt.

Ill, pp. 30-208 (1964). 6316. Propagation of a reflected shock wave in a transverse magnetic field, Y. Boublil and K. B. Earnshaw. Phys. Fluids 7, No. 6, 876-881

(June 1964).

6317. Properties of normal and parahydrogen, R. B. Stewart and H. M. Roder. Book, Technology and

Uses of Liquid Hydrogen, pp. 379-404 (Pergamon

Press, Inc., New York, N. Y. , 1964).

6318. Proton and fluorine NMR spectra of HBF 2 , T. C. Farrar and T. D. Coyle. J. Chem. Phys. 41, No. 9, 2612-2613 (Nov. 1, 1964).

6319. Proton-transfer reactions between H3 and saturated hydrocarbons, P. Ausloos and S. G. Lias. J. Chem. Phys. 40, No. 12, 3599-3605 (June

15, 1964).

6320. Proton transfer reactions occurring in the gas-phase radiolysis, P. Ausloos and S. G. Lias. Discussions Faraday Soc. 39. 36-44 (1964). 6321. Pseudopentagonal twins in electrodeposited

copper dendrites, F. Ogburn, B. Paretzkin,

and H. S. Peiser. Acta Cryst. 17, 774-775 (1964). 6322. Pulsed and CW sinusoidal voltage and current measurements, M. C. Selby. Proc. URSI XlVth General Assembly, Tokyo, Japan, Sept. 1963, XIII, 92-100 (1964).
1964

6323. Pyrolysis of new f luoropolymers, S. Straus

and L. A. Wall. SPE Trans. 4, No. 1, 56-60

(Jan. 1964).

6324. Pyrolysis of polytrifluoroethylene : influence

of gamma radiation and alkali treatment, S. Straus

and L. A. Wall. SPE Trans. 4, No. 1, 61-65 (Jan. 1964)

.

6325. Radar echoes from Venus at 50 Mc/s, W. K. Klemperer, G. R. Ochs, and K. L. Bowles. Astron.

J. 69, No. 1, 22-28 (Feb. 1964).

6326. Radiation from sources immersed in compressible plasma media, J. R. Wait. Can. J. Phys. 42, 1760-1780 (Sept. 1964).

6327. Radiative tail in elastic electron scattering,

L. C. Maximon and 0. B. Isabelle. Phys. Rev. Letters 133, No. 5B, 1344-1350 (Mar. 9, 1964).

6328. Radiative tail for inelastic electron scattering, L. C. Maximon and D. B. Isabelle. Phys. Rev.

136, No. 3B, B674-683 (Nov. 1964).

6329. Radio propagation by reflection from meteor

trails, G. R. Sugar. Proc. IEEE 52, No. 2, 116-

136 (Feb. 1964).

6330. Radio, the ionosphere, and IQSY, R. W. Knecht.

Proc. URSI XlVth General Assembly, Tokyo, Japan,

Sept. 1963, XIII, 181-194 (1964). 6331. Radiochemical determination of uranium of low activity, L. A. Currie, G. M. France, III, and P. A. Mullen. Health Phys. 10, 751-755 (1964). 6332. Ranking laboratories and evaluating methods

of measurement in round-robin tests, T. W. Lashof.

Mater. Res. Std. 4, No. 8, 397-407 (Aug. 1964).

6333. Rate dependence in a solarizing commercial x-ray emulsion: sensitometric properties, number,

and structure of developed grains, M. Ehrlich,

Wm. L. McLaughlin, and E. Zeitler. J. Opt. Soc. Am.

54, No. 2, 176-183 (Feb. 1964)

.

6334. Reaction 59 Co (p,a) S6 Fe, M. Barloutaud, R. S. Caswell, J. Gastebois, A.G. de Pinho, and J.Quidort.

(Proc. Intern. Congress Nuclear Physics, Paris, France, July 2-8, 1964), Compt. Rend. Cong. Intern.

Phys. Nucleaire II, 717-719 (Centre National de la Recherche Scientifique, Paris, France, 1964).

6335. Reaction of deuterated polystyrenes with hydrogen and deuterium atoms, L. A. Wall and

R. B. Ingalls. J. Chem. Phys. 41, No. 4, 1112-

1120 (Aug. 1964)

.

6336. Reaction of ground state oxygen atoms with

condensed olefins, M. D. Scheer and R. Klein. Science 144, No. 3623, 1214 (Apr. 1964).

6337. Recalibration of the NBS glass standards of spectral transmittance, H. J. Keegan, J. C. Schleter, and M. A. Belknap. J. Opt. Soc. Am. 54, No. 1, 69-74 (Jan. 1964).

6338. Recent developments in using elastomers for static cryogenic seals, P. R. Ludtke. Proc. Seventh National Society of Aerospace Materials

Process Engineering Symp., pp. 25-1 —25-14

(Western Periodicals, Los Angeles, Calif., 1964).

6339. Recently discovered autoionizing states of krypton and xenon in the -V380-600A, R. P. Madden

and K. Codling. J. Opt. Soc. Am. 54, No. 2, 268-

269 (Feb. 1964)

.

6340. Refractive properties of barium fluoride,

I. H. Malitson. J. Opt. Soc. Am. 54, No. 5, 628-632 (May 1964)

.

6341. Refractivities of the rare earth oxides,

E. M. Levin. (Proc. Third Rare Earth Research

Conf., Apr. 2-24, 1963), Book, Rare Earth

Research, Chapter on Magnetic and Optical Studies,

p. 339-350 (Gordon and Breach Science Publ. Inc., New York, N. Y. , May 1964)

.

6342. Relation between normal trichromatic vision

and dichromatic vision representing a reduced

form of normal vision, D. B. Judd. Acta Chro- matica 1, No. 3, 89-92 (Oct. 1964).

6343. Relationships between different kinds of network parameters, not assuming reciprocity

or equality of the waveguide or transmission

line characteristic impedances, R. W. Beatty

and D. M. Kerns. Proc. IEEE 52, No. 1, 84 (Jan. 1964)

.

6344. Relative oscillator strengths of some 0 II and 0 III lines from measurements on shock-heated

plasmas, H. F. Berg, K. L. Eckerle, R. W. Burris, and W. L. Wiese. Astrophys. J. 139, No. 2, 751-

757 (Feb. 15, 1964).

6345. Relaxation of a Lorentz gas with a repulsive

r~ s force law, H . Oser, K. E. Shuler, and G. Weiss. J. Chem. Phys. 41, No. 9, 2661-2663 (Nov. 1964)

.

6346. Resonance effects of electrostatic oscillations in the ionosphere, J. A. Fejer and W. Calvert. J. Geophys. Res. 69, 5049-5062 (Dec. 1964)

.

6347. Resonances of a spherical void in a compressible isotropic plasma, J. R. Wait. J. Geophys.

Res. 69, No. 19, 4189-4191 (Oct. 1, 1964).

6348. Response characteristics of a 4tt neutron

detector, H. Gerstenberg. Bull. Am. Phys. Soc.

9, Pt. 2, 421 (Apr. 28, 1964).

6349. Reversal of the diurnal phase variations of GBR (16 kilocycles per second) observed over a path of 720 kilometers, D. D. Crombie and H. L. Rath. J. Geophys. Res. 69, No. 23, 5023-5027

(Dec. 1, 1964).

6350. Review of static seals for cryogenic systems,

R. F. Robbins and P. R. Ludtke. J. Spacecraft Rockets 1, No. 3, 253-259 (May-June 1964).

6351. RF and microwave power measurements, G. F. Engen. Proc. URSI XlVth General Assembly, Tokyo,

Japan, Sept. 1963, XIII, 77-80 (1964).

6352. Room temperature oxidation of iron at low pressures, J. Kruger and H. T. Yolken. Corrosion

20, No. 1, 29t-33t (Jan. 1964).

6353. Rotation-vibration interaction and other

corrections to the spin doublet separation in

27rdiatomic molecules, T. C. James. J. Chem. Phys.

41, No. 3, 631-641 (Aug. 1964).

6354. Rotational constants of excited vibrational

states of 14 N2 ls O, W. J. Lafferty and D. R. Lide. J. Mol. Spectry. 14, No. 4, 407-408 (Dec. 1964)

.

6355. Safety in the use of liquid hydrogen, D. B. Chelton. Book, Technology and Uses of Liquid

Hydrogen, Ed. R. B. Scott, W. H. Denton, and

C. M. Nicholls, Chapt. 10, 359-378 (Pergamon Press Inc., New York, N. Y. , 1964).

6356. Salt effects and medium effects on indicator

acid-base equilibria in a methanol-water solvent,

D. Rosenthal, H. B. Hetzer, and R. G. Bates.

J. Am. Chem. Soc. 86, No. 4, 549-554 (Feb. 20, 1964)

.

6357. Sampling and statistical design, W. J. Youden. Proc. Symp. Environmental Measurements,

U. S. Public Health Service, pp. 35-39 (July

1964)

.

6358. Satellite scintillation observations at Boulder, Colorado, J. L. Jespersen and G. Kamas„

J. Atmospheric Terrest. Phys. 26, 457-473 (1964).

3 71
1964

6359. Second acid dissociation of N,N-Di-(2-

hydroxyethyl) -glycine and related thermodynamic quantities from 0 to 55 , S. P„ Datta,

A. K. Grzybowski, and R. G. Bates. J. Phys.

Chem. 68, No. 2, 275-280 (Feb. 1964)

.

6360. Second dissociation constant of deuterio- phosphoric acid in deuterium oxide from 5 to 50 . Standardization of a pD scale, R. Gary, R. G. Bates, and R. A. Robinson. J. Phys. Chem. 68, No. 12, 3806-3809 (Dec. 1964).

6361. Sensitivity indices for Hall generators,

S. Rubin7 Solid State Design Mag. 5, No. 12, 38-39 (Dec. 1964).

6362. Separation and determination of zirconium

in zirconia yttria mixtures by precipitation with cupferron, E. J. Maienthal and J. K. Taylor. Anal. Chem. 36, No. 7, 1286-1287 (June

1964)

.

6363. Screening effects in elastic electron

scattering, E. Zeitler and H. Olsen. Phys. Rev.

136, No. 6A, A1546-A1552 (Dec. 1964).

6364. Shape of the magnetosphere boundary shape under solar wind pressure, R. J. Slutz and J. R. Winkelman. J. Geophys. Res. 69, No. 23, 4933-4948

(Dec. 1964).

6365. Should the conventional definition of mis- match loss be abandoned? K. A. Norton. Proc.

IEEE 52, 710 (June 1964).

6366. Sieve techniques for obtaining small amounts

of narrowly classified particles, C. M. Hunt and

A. R. Woolf. Mater. Res. Std. 4, No. 7, 364-365

(July 1964).

6367. Soft X-ray microscopy of paper, S. B. Newman

and D. Fletcher. TAPPI 47, No. 4, 177-180 (Apr. 1964)

.

6368. Solar flares with associated active dark

filaments and their relation to 2800-Mc/s radio

bursts, M. W. Haurwitz. Astrophys. J. 140, No.

3, 1236-1246 (Oct. 1, 1964).

6369. Solubility of helium in liquid hydrogen,

R. J. Corruccini. J. Chem. Phys. 40, 2039-2040

(Apr. 1964).

6370. Solvent participation in the anionic poly- merization of styrene, L. J. Fetters. Polymer

Letters 2, 425-428 (Apr. 1964).

6371. Some aspects of the coordination chemistry

of boron, T. D. Coyle and F. G. A. Stone. Progr. Boron Chem. 1, 83-166 (1964).

6372. Unassigned.

6373. Some activities of the cooperative dental research between the Federal Government and the American Dental Association at the National Bureau of Standards, G. C. Paff enbarger . Ann. Dentistry, 23, No. 4, 111-126 (Dec. 1964).

6374. Some considerations relative to an atomic definition for the unit of time, R. C. Mockler

and J. M. Richardson. Proc. Consultative Com- mittee for the Definition of the Second of the

Intern. Comm. of Weights and Measures, Paris, France, Apr. 1961, pp. 58-65 (Dec. 1964).

637 5. Some observations of short-duration cosmic

noise absorption events in conjugate regions

at high magnetic latitude, K. W. Eriksen, C. S. Gillmor, and J. K. Hargreaves. J. Atmospheric

Terrest Phys. 26, 77-90 (1964).

6376. Some properties of polystyrene networks

formed from oriented chains, J. C. Halpin and

L. Mandelkern. J. Polymer Sci. Pt. B, 2, 139-

142 (1964).

6377. Some remarks concerning nonreciprocity in radio propagation, J. R. Wait. IEEE Trans. Ant.

Prop. AP-12, No. 3, 372-373 (May 1964).

6378. Some remarks on certain generalized Dedekind

sums, H. Rademacher. Acta Arithmetica 9, Sec. 1, 97-105 (1964). 6379. Some remarks on microgrammers , W. C. Watt. Proc. Washington Linguistics Club 2, No. 1, 13-17 (Oct. 26, 1964)

.

6380. Some results of a new method for obtaining

ionospheric N(h) profiles with a bearing on the structure of the lower F region, J. W. Wright

and A. K. Paul. (Proc. NATO Advanced Study In- stitute, Sheikampen, Norway, Apr. 17-26, 1963), Book, Electron Density Distribution in the Ionosphere and Exosphere, p. 105-115 (North Holland Publ. Co., Amsterdam, The Netherlands,

1964).

6381. Some results on the energy-dependent Milne problem for light gases, C. Eisenhauer. Nucl.

Sci. Eng. 19, 95-101 (May 1964).

6382. Spacetime coordinate systems, G. E. Hudson.

Proc. Intern. Conf. Chronometry, pp. 197-221

(Lausanne, Switzerland, June 1964).

6382A. Specification and designation of color,

D. B. Judd and I. Nimeroff. Treatise Anal.

Chem. 36, 2873-2942 (1964).

6383. Spectral distribution of typical daylight

as a function of correlated color temperature,

D. B. Judd, D. L. MacAdam, and G. Wyszecki.

J. Opt. Soc. Am. 54, No. 8, 1031-1040 (Aug. 1964)

.

6384. Spectral study of active nitrogen flames exhibiting CN "tail" bands, R. L. Brown and

H. P. Broida. J. Chem. Phys. 41, No. 7, 2053- 2060 (Oct. 1, 1964).

6385. Spectral tristimulus values for the CIE

(u,v,w) uniform spacing system, I. Nimeroff.

J. Opt. Soc. Am. 54, No. 11, 1365-1367 (Nov. 1964).

6386. Spectroscopic investigations of fluorescence

and chemiluminescence in gases, T. Carrington. (Collection of papers), Aero-Space Research Laboratory Report No. 64-51 (Mar. 1964).

6387. Spin-orbit coupling constant of nitric oxide Determination from fundamental and satellite

band origins, T. C. James and R. J. Thibault.

J. Chem. Phys. 41, No. 9, 2806-2813 (Nov. 1964).

6388. Spread-F observations by the alouette topside sounder satellite, W. Calvert and C. W. Schmid. J. Geophys. Res. 69, No. 9, 1839-1852

(May 1, 1964).

6389. Sr 87/Sr 86 ratios in Hawaiian lavas, P. Lessing and E. J. Catanzaro. J. Geophys. Res. 69 No. 8, 1599-1601 (Apr. 15, 1964).

6390. Standard electromotive force of the hydrogen

silver chloride cell and the thermodynamics of solutions of hydrochloric acid in 50 wt. percent methanol from 10 to 40° C, M. Paabo, R. A. Robinson, and R. G. Bates. J. Chem. Eng. Data 9, No. 3, 374-376 (July 1964).

6391. Standard nuclear instrument modules, L. Costrell. U. S. Atomic Energy Commission TID

Report 20893, 12 pages (July 1964).

6392. Standard potential of the Ag-AgCl electrode

in 5 percent aqueous mannitol, R. Gary and R. A. Robinson. J. Chem. Eng. Data 9, No. 3, 376-378

(July 1964).

6393. Standard test for determining alkali re- sistance of porcelain enamels, M. D. Burdick.

Proc. Porcelain Enamel Inst. Forum 26, 227-236

(Oct. 14-16, 1964).

372
1964

Schneider. Session III. Calif.,

6394. Standardization of definitions for Hall effect devices, S. Rubin. Proc. Rotating and Static Precision Components Symp., Apr. 1964, pp. 344-

360 (Bureau Naval Weapons, Washington, D. C,

1964).

6395. Standardization of dimensions of packages

for self-service selling, A. T. McPherson and

A. S. Best. THE PACKETT, Packaging Professional

2, No. 3, 4-5 (Packaging Inst., 1964).

6396. Standards and measurement of attenuation, impedance and phase shift, R. W. Beatty. Proc. URSI XlVth General Assembly, Tokyo, Japan,

Sept. 1963, XIII, 80-92 (1964).

6397. Standards of electromotive force, W. J. Hamer. J. Wash. Acad. Sci. 54, No. 7, 297-315

(Oct. 1964).

6398. Standards, sources, and detectc tion measurements, R. Stair and W. Symp. Thermal Radiation of Solids, Measurement Techniques, San Francisi

Mar. 4-6, 1964, Paper 3 (1964). 6399. Standards—the foundation of industrial

growth, R. D. Stiehler. Ind. Times, VI, No. 22 (Bombay, India, Nov. 15, 1964).

6400. Statistical model for the beta zirconium

hydrides, T. B. Douglas. J. Chem. Phys. 40, No. 8, 2248-2257 (Apr. 15, 1964).

6401. Statistical surface thermodynamics of simple liquid mixtures, C. A. Eckert and J. M. Prausnitz. A. I.Ch.E. J. 10, No. 5, 677-683

(Sept. 1964).

6402. Statistical thermodynamics of the lattice

model of a polymer molecule, J. Mazur. J. Chem.

Phys. 40, No. 4, 1001-1007 (Feb. 1964).

6403. Statistics in its proper place, W. J. Youden. J. Wash. Acad. Sci. 54, 53-57

(Mar. 1964)

.

6404. Stimulated Brillouin scattering in the offaxis resonator, H. Takuma and D. A. Jennings.

Appl. Phys. Letters 5, No. 12, 239-241 (Dec. 1964)

.

6405. Stochastic theory of diffusion in a plasma

across a magnetic field, C. M. Tchen. Proc.

Intern. Symp. Plasma Diffusion, Feldafing,

Germany, June 29-July 3, 1964, pp. 118-123

(1964) . 6406. Stress-induced martensitic transformations

in 18Cr-8Ni steel, R. P. Reed and C. J. Guntner.

Trans. Met. Soc. AIME 230, 1713-1720 (Dec. 1964)

.

6406A. Studies of Alouette observations at the CRPL, W. Calvert, H. Rishbeth, and T. Van Zandt.

Trans. American Geophysical Union, IG Bull. 45,

No. 2, 398-401 (June 1964).

6407. Studies of photodissociation of molecular

ions, G. H. Dunn. (Proc. 3d Intern. Conf. Physics

of Electronic and Atomic Collisions, London, England, 1963), Book, Atomic Collision Processes,

ed. M. R. C. McDowell, p. 997-1005 (North Holland Publ. Co., Amsterdam, The Netherlands,

1964)

.

6408. Studies of the thicknesses of adsorbed glass finishes by ellipsometry, D. J. Tutas, R. R. Stromberg, and E. Passaglia. SPE Trans. 4, No. 4, 1-7 (Oct. 1964).

6409. Suggested practices for < pling and sample preparati< spectrochemical analysis. R. E. Michaelis. Book, Methods for Emission Spectrochemical Analysis, 4th edition, p. 256-259 (American Society for Testing Materials, Phila. , Pa., Feb. 1964).

6410. Summary of symposium on recent research on bituminous materials, S. H. Greenfeld. ASTM

Spec. Tech. Publ. No. 347, p. 108-111 (May 1964).

istablishing : i techniques ii E. Michaelis,

6411. Superconductivity in semiconducting SrTi03 , J. F. Schooley, W. R. Hosier, and M. L. Cohen. Phys. Rev. Letters 12, No. 17, 474-475 (Apr. 1964)

.

6412. Surface currents in type II superconductors,

S. Gygax and R. H. Kropschot. Physics Letters 9, No. 2, 91 (Apr. 1, 1964).

6413. Surface integral form for three-body collision in the Boltzmann equation, M. S. Green.

Phys. Rev. 136, No. 4A, A905-A910 (Nov. 16, 1964).

6414. Survey of current NBS work on properties of parahydrogen, R. D. Goodwin, D. E. Diller,

W. J. Hall, H. M. Roder, L. A. Weber, and

B. A. Younglove. (Proc. 1963 Cryogenic Eng. Conf. Univ. Colorado and National Bureau of Standards, Boulder, Colo., Aug. 19-21, 1963), Book, Advances in Cryogenic Engineering 9, Paper D-9, 234-242 (Plenum Press Inc., New

York, N. Y., 1964).

6415. S-wave hyperon-nucleon interactions and SU3 symmetry, P. D. DeSouza, G. A. Snow, and S. Meshkov. Phys. Rev. 135, 565 (1964).

6416. Synthesis of diatomic radicals, H. E. Radford. J. Chem. Phys. Commun. 40, No. 9, 2732-

2733 (May 1, 1964).

6417. Synthesis of higher ketoses by aldol reactions. II. Unsubstituted heptuloses, R. Schaffer. J. Org. Chem. 29, 1471-1473 (June 1964).

6418. Systematic atmospheric refraction errors

of baseline-type radio tracking systems and methods of their correction, G. D. Thayer and

B. R. Bean. Proc. 1st Space Congress, Cocoa

Beach, Fla., Apr. 1964.

6419. Tables of dielectric constants, dipole moments and dielectric relaxation times,

F. I. Mopsik. 1963 Digest Lit. Dielectrics Publ.

1230, 27, 23-55 (1964).

6420. Tables of energy losses and ranges of electrons and positrons, M. J. Berger and

S. M. Seltzer. Natl. Aeronaut. Space Admin. NASA SP-3012, 1-127 (1964). 6421. Tables of energy losses and ranges of heavy

charged particles, W. H. Barkas and M. J. Berger. Natl. Aeronaut. Space Admin. NASA SP3113, 1-131 (1964).

6422. Tapered inlet structures for pipe culverts,

J. L. French. J. Hydraulics Div. ASCE 90, No. HY2 256-299 (Mar. 1964).

6423. Techniques for using the air-gap method for

the precise determination of the dielectric constant and loss angle of solid-disk specimens,

A. H. Scott. (Proc. Conf. Electric Insulation),

1963 Annual Report, Natl. Acad. Sci. -Natl. Res. Council Publ. 1141, p. 74-76 (1964).

6424. Technology and Uses of Liquid hydrogen,

Book, R. B. Scott, Editor. Pergamon Press Ltd., London, England, 1964.

6425. Temperature and mean free path dependence

of the Ginzburg-Landau parameter, S. Gygax and

R. H. Kropschot. Physics Letters 12, No. 1, 7-9 (Sept. 1964).

6426. Tetragonal phases of the general type 10M2 0 5

* 90M2 0 5 apparently isostructural with

Ta 2 0 5

• 2Nb 2 0 5 , J. L. Waring and R. S. Roth. Acta Cryst. 17, 455-456 (1964). 6427. The accurate measurement of voltage ratios

of inductive voltage dividers, T. L. Zapf. Acta IMEKO 3, 317-331 (1964).

6428. The absorption spectrum of the "pink" afterglow of nitrogen in the vacuum ultraviolet, A. M. Bass. J. Chem. Phys. 40, No. 3, 695-700 (Feb. 1, 1964).

6429. The application of Archimedes' principle to

:i of the apparent volume of leather, 373
J. R. Kanagy. J. Am. Leather Chem. Assoc, LIX,

No. 11, 636-649 (Nov. 1964).

6430. The calculation of electron energy distribution functions in the ionosphere, L. R. Megill

and J. H. Cahn. J. Geophys. Res. 69, No. 23, 5041-5048 (Dec. 1, 1964).

6431. The calculations of autoionization probabilities, J. W. Cooper. (Proc. 3d Intern. Conf. Physics of Electronic and Atomic Collisions,

London, England, 1963) , Book, Atomic Collision

Processes, ed. M. R. C. McDowell, p. 595-599

(North Holland Publ. Co., Amsterdam, The Netherlands, 1964).

6432. The calorimeter and its influence in the development of chemistry, G. T. Armstrong.

J. Chem. Ed. 41, No. 6, 297-307 (June 1964).

6433. The cement and concrete reference laboratory inspection service for concrete testing laboratories, J. R. Dise. Concrete Construct. 9, No.

8, 234 (Aug. 1964).

6433A. The concentration dependence of the sedi- mentation coefficient of polystyrene in dilute

solution, I. H. Billick. Preprint American

Chem. Soc. 5, No. 2, 855-860 (1964).

6434. The contribution of nonthermal electrons to auroral absorption of radio waves, G. C. Reid.

J. Geophys. Res. 69, No. 15, 3296-3298 (Aug. 1964)

.

6435. The correlation of thermodynamic properties

of cryogenic fluids, R. B. Stewart and K. D. Timmerhaus. (Proc. 1963 Cryogenic Eng. Conf.,

Univ. Colorado and National Bureau of Standards,

Boulder, Colo., Aug. 19-21, 1963), Book, Advances in Cryogenic Engineering 9, Paper A-3, 20-27 (Plenum Press Inc., New York, N. Y. , 1964).

6436. The crystal structure of 1-ethyl decaborane,

A. Perloff. Acta Cryst. 17, 332 (1964).

6437. The crystallography of some M

2+ borates,

S. Block, A. Perloff, and C. E. Weir. Acta

Cryst. 17, 314-315 (Mar. 1964).

6438. The current status of graphic storage

techniques: their potential application to library mechanization, S. N. Alexander. (Proc. Conf. Library Automation, Airlie Foundation,

Warrington, Va., May 26-30, 1963), Book, Libraries and Automation, Ed. B. E. Markuson,

pp. 111-140 (Library of Congress, Washington,

D. C, 1964).

6439. The daytime equatorial F-layer, R. B. Norton and T. E. VanZandt. J. Atmospheric and Terrest. Phys. 26, No. 11, 1047-1054 (Nov. 1964).

6440. The effect of carbon-arc intensity on asphalt

oxidation, J. R. Wright, P. G. Campbell, and

T. L. Fridinger. J. Appl. Chem. (London) 14, 30- 35 (Jan. 1964)

.

6441. The effect of coulomb collisions on incoherent scattering of radio waves by a plasma, D. T. Farley, Jr. J. Geophys. Res. 69, No. 1, 197-200

(Jan. 1, 1964).

6442. The effect of particle shape and size dis- tribution in a reinforced polymer, R. Bowen.

J. Am. Dental Assoc. 69, No. 4, 481-495 (Oct. 1964)

.

6443. The electron paramagnetic resonance spectrum

of some tris-complexes of copper (II), H. C. Allen, Jr., G. F. Kokoszka, and R. G. Inskeep.

J. Am. Chem. Soc. 86, 1023-1025 (1964)

.

6444. The electrolysis of formamides, acetamides and propionamides, D. E. Couch. Electrochim. Act:.-*. 9, No. 4, 327-336 (Apr. 1964).

6445. The energy loss of electrons in solids,

A. M. Rauth and J. A. Simpson. Radiation Res.

22, No. 4, 643-661 (1964). 6446. The error rate in a multiple frequency shift system and the output signal noise ratio in a frequency modulation and pulse code modulation

frequency shift system, H. Akima. Proc. IEE (London) III, No. 3, 547-555 (Mar. 1964).

6447. The excitation of the 2P state of hydrogen

by electrons of near-threshold energy, G. E. Chamberlain, S. J. Smith, and D. W. O. Heddle.

Phys. Rev. Letters 12, No. 23, 647-649 (June

8, 1964).

6448. The gas phase radiolysis propane. The effect of pressure and added inert gases, P. Ausloos, S. G. Lias, and I. B. Sandoval. Dis- cussion Faraday Soc. No. 36, 66-74 (Mar. 1964).

6449. The guided propagation of ELF and VLF radio waves between the earth and the ionosphere,

D. D. Crombie and A. G. Jean. Proc. URSI XlVth

General Assembly, Tokyo, Japan, Sept. 1963, XIII, 195-206 (1964). 6450. The half-life of carbon-14 : comments on the mass-spectrometric method, E. E. Hughes and W. B. Mann. Intern. J. Appl. Radiation Isotopes 15, No. 1, 97-100 (Jan. 1964).

6451. The influence of metastable oxygen molecules

on ozone and airglow, H. I. Schiff and L. R. Megill. J. Geophys. Res. 69, No. 23, 5120-5121

(Dec. 1, 1964).

6452. The Institute for Applied Technology, D. A. Schon. Engineer V, No. 2, 3 (1964). 6453. The interaction of 350 keV polarized neutrons with oriented Ho 165 nuclei, H. Marshak, R. Wagner

P. P. Miller, and T. Tamura. Physics Letters 10, No. 3, 316 (June 15, 1964).

6454. The ionosphere and radio propagation in the lower frequencies, T. N. Gautier. Science 143, No. 3611, 1197-1199 (Mar. 13, 1964).

6455. The isomerization of D-manno-3-heptulose by alkali, R. Schaffer. J. Org. Chem. 29, 1473-1475

(June 1964).

6456. The \-absorption cross section of holmium

in the dynamic collective theory, M. Danos and

W. Greiner. Physics Letters 8, No. 2, 113-115

(Jan. 15, 1964).

6457. The light of the night sky: astronomical interplanetary and geophysical, F. E. Roach. Space Sci. Rev. 3, 512-540 (Nov. 1964).

6458. The liquefaction of hydrogen. 3A. Basic

principles, P. C. Vander Arend and D. B. Chelton.

Book, Technology and Uses of Liquid Hydrogen,

Chapt. 3, pp. 38-55 (Pergamon Press, Inc., New

York, N. Y., 1964).

6459. The liquefaction of hydrogen. 3B-2. Largescale hydrogen liquefaction facilities, P. C. Vander Arend and D. B. Chelton. Book, Technology

and Uses of Liquid Hydrogen, Chapt. 3, pp. 79- 105 (Pergamon Press Inc., New York, N. Y.

,

1964)

.

6460. The listing of sudden ionosphere disturbances

J. V. Lincoln. Planetary Space Sci. 12, No. 5, 419-434 (May 1964)

.

6461. The meaning of "least" in least squares,

C. Eisenhart. J. Wash. Acad. Sci. 54, No. 2, 24-33 (Feb. 1964).

6462. The molecular symmetry of iodopentaborane,

L. H. Hall. J. Am. Chem. Soc. Commun. to Editor

86, No. 21, 4729 (Nov. 5, 1964).

6463. The National Bureau of Standards, E. L. Graminski. Capital Chem. 14, No. 9, 278-281

(Dec. 1964). 6464. The National Bureau of Standards tritiated

water standards, W. B. Mann. J. Appl. Radiation

Isotopes 15, 628 (1964). 6465. The needs of the statistical engineering
1964 program of the National Bureau of Standards,

C. Eisenhart. Proc. 9th Conf. Design of Ex- periments in Army Research Development and

Testing, Directorate of Research and Development,

U. S. Army Missile Command, Redstone Arsenal,

Ala., Oct. 23-25, 1963, ARO-D Report 64-2, pp. 550-556 (U.S. Army Res. Office, Durham, N. C.

,

Dec. 1964).

6466. The 1963 symposium on humidity and moisture,

A. Wexler. May 20-23, 1963, Washington D. C.

,

Intern. J. Heat Mass Transfer 7, 27 5-277 (1964). 6467. The operating characteristics of Zener ref- erence diodes and their measurements, W. G. Eicke, Jr. ISA Trans. 3, No. 2, 93-99 (Apr. 1964).

6468. The oxide films formed on copper single crystal surfaces in water. III. Effect of light,

J. Kruger and J. P. Calvert. J. Electro. Chem.

Soc. Ill, No. 9, 1038-1041 (Sept. 1964).

6469. The performance of point level sensors in liquid hydrogen, D. A. Burgeson, W. G. Pestalozzi,

and R. J. Richards. (Proc. 1963 Eng. Conf. Univ. Colorado and National Bureau of Standards,

Boulder, Colo., Aug. 19-21, 1963), Book, Advances

in Cryogenic Engineering 9, Paper G— 5, 416-422

(Plenum Press Inc., New York, N. Y. , 1964).

6470. The present and future of astrophysics and

its effects on industry in Colorado, L. M. Branscomb. (Proc. University-Industry Liaison

Conf., 1963), Book, Colorado and the New Technological Revolution, ed. W. H. Miernyk,

p. 55-64 (Bureau of Economic Research, University

of Colorado, Boulder, Colo., 1964).

6471. The quest for design data, R. B. Stewart.

Symp. The Role Cryogenics is Playing in Expanding

Mechanical Engineering, Am. Soc. Refrigerating

and Air Conditioning Engineers, New York, N. Y.

,

Feb. 11-14, 1964, p. 13-24 (1964). 6472. The reaction of methyl radicals with di- methylmercury, R. E. Rebbert and P. Ausloos. J. Am. Chem. Soc. 86, No. 10, 2068-2069 (May 20, 1964).

6473. The relation between VLF propagation and D- layer characteristics, J. R. Wait. IEEE Trans.

Ant. Prop. AP-12, No. 2, 239-240 (Mar. 1964).

6474. The relationship between intensity of carbon

arc and asphalt oxidation, J. R. Wright, P. G. Campbell, and T. L. Fridinger. ASTM Spec. Tech.

Publ. No. 347, p. 3-20 (May 1964).

647 5. The response of microwave refractometer

cavities to atmospheric variations, R. 0. Gilmer,

R. E. McGavin, and B. R. Bean. Proc. 1964 World

Conf. Radio Meterology and 11th Weather Radar

Conf., pp. 244-247 (Sept. 1964).

6476. The role of cryogenics in the production of high and ultra-high vacuum, L. 0. Mullen and

M. J. Hiza. Cryogenics 4, No. 6, 387-394 (Dec. 1964)

.

6477. The solid state of rare gases, G. L. Pollack.

Rev. Mod. Phys. 36, No. 3, 748-792 (July 1964).

6478. The solubility of water vapor in molten

alumina, J. J. Diamond. (Proc. Conf. Arthur D. Little, Inc., Cambridge, Mass., Oct. 4-5, 1962),

Book, Thermal Imaging Techniques, Ed. P. E. Glaser and R. F. Walker, Chapt. 17, pp. 225-228

(Plenum Press Inc., New York, N. Y. , 1964).

6479. The standardization of programming languages,

F. L. Alt. Proc. 19th Natl. Conf. Association

for Computing Machinery, Philadelphia, Pa., Aug. 1964, pp. B2-1 (1964).

6480. The statistical analysis of experimental data,

J. Mandel. 410 pages (Interscience Publ. Inc., New York, N. Y. , 1964).

6481. The statistical construction of a single standard from several available standards,

3 75

E. L. Crown. IEEE Trans. Instr. Meas. IM-13, No.

4, 180-185 (Dec. 1964).

6482. The structure and physics of the upper

atmosphere, T. E. VanZandt and R. W. Knecht.

Book, Space Physics, p. 166-225 (John Wiley and

Sons, Inc., New York, N. Y. , 1964).

6483. The structure of carbon suboxide, W. J. Lafferty and A. G. Maki. Chemistry 37, No. 7, 19 (July 1964).

6484. The structure of the triclinic form of sodium tetrametaphosphate tetrahydrate, H. M. Ondik. Acta Cryst. 17, No. 9, 1139-1145 (Sept. 1964).

648 5. The surface composition of hydroxylapatite

derived from solutions behavior of aqueous sus- pensions, V. R. Deitz, H. M. Rootare, and F. G, Carpenter. J. Colloid Sci. 19, No. 1, 87-101

(Jan. 1964).

6486. The ultraviolet realm of spectroscopy, C. E. Moore. J. Wash. Acad. Sci. 54, 58-62 (Mar. 1964).

6487. The U. S. basis of electromagnetic measurements, J. M. Richardson and J. F, Brockman. IEEE Spectrum 1, No. 1, 129-138 (Jan. 1964).

6488. The use of an analog computer in side-on arc spectroscopy, J. B. Shumaker and C. R. Yokley.

Appl. Opt. 3, No. 1, 83-87 (Jan. 1964).

6489. The use of terahertz photobeats for precise velocity-of-light measurements, Z. Bay and H. S. Boyne. Proc. Enrico Fermi International School

of physics: Course No. XXXI, Quantum Electronics

and Coherent Light 1963, pp. 352-371 (1964). 6490. The uses of oblique ionograms in frequency

utilization, K. Davis. Telecommunications J. 31, No. 10, 281-287 (Oct. 1964).

6491. The value of the Faraday, W. J. Hamer and

D. N. Craig. J. Electrochem. Soc. Ill, No. 12, 1434 (Dec. 1964). 6492. The world of NOMAD-1 , W. Hakkarinen. Proc. Buoy Technology Symp., Washington, D. C. , Mar. 24-25, 1964, pp. 443 (Marine Technology Society,

1964). 6493. Theoretical aspects of polymer crystalliza- tion with chain folds: bulk polymers, J. D. Hoffman. SPE Trans. 4, No. 4, 315-362 (Oct. 1964). 6494. Theory of boil-off calorimetry, R. B. Jacobs.

Rev. Sci. Instr. 35, No. 7, 828-832 (July 1964). 6495. Theory of irreversible processes in plasmas

derivation of a convergent kinetic equation from

the generalized master equation, J. Weinstock.

Phys. Rev. 133, No. 3A, A673-A680 (Feb. 3, 1964). 6496. Theory of the electronic susceptibilities of Stoichiometric rutile (Ti0 2 ) , A. R. Ruff a. Phys.

Rev. 133, No. 5A, 1418-1426 (Mar. 2, 1964).

6497. Theory of whisker growth and evaporation,

J. A. Simmons, R. L. Parker, and R. E. Howard.

J. Appl. Phys. 35, No. 7, 2271-2272 (July 1964).

6498. Thermal conductivity and viscosity of simple

fluids, J. V. Sengers. Am. Chem. Soc. Div. Petroleum Chemistry, Symp. Molecular Transport Properties of Liquids 9, No. 4, C-57 to C-70

(Sept. 1964).

6499. Thermal decomposition of some alkyl halides

by a shock-tube, W. Tsang. J. Chem. Phys. 41, No. 8, 2487-2494 (Oct. 15, 1964).

6500. Thermal decomposition of some tert-butyl

compounds at elevated temperatures, W. Tsang.

J. Chem. Phys. 40, No. 6, 1498-1505 (Mar. 1964>.

6501. Thermal Degradation of Organic Polymers,

5. L. Madorsky. Book, 315 pages (Interscience

Pubi., Inc., New York, N. Y., 1964).

6502. Thermal stability of bis (8-hydroxy-5-

quinolyl) methane coordination polymers,

E. Horowitz and T. P. Perros. J. Inorg. Nucl.

Chem. 26, No. 1, 139-159 (Jan. 1964).

6503. Thermodynamic data compilation and review
1964

at the National Bureau of Standards, G. T. Armstrong. Svensk Kern. Tidskr. 76, No. 8, 419-

427 (1964)

.

6504. Thermodynamics of aqueous solutions of hydriodic acid from electromotive force measurements of hydrogen-silver iodide cells, H. B. Hetzer, R. A. Robinson, and R. G. Bates. J. Phys.

Chem. 68, No. 7, 1929-1933 (1964). 6505. Thermodynamics of hydrogen solubility in cryogenic solvents at high pressures, M. Orentlicher and J. M. Prausnitz. Chem. Eng. Sci.

19, 775-782 (Oct. 1964).

6506. Thermodynamics of solutions of deuterium

chloride in heavy water from 5 to 50 , R. Gary,

R. G. Bates, and R. A. Robinson, J. Phys. Chem.

68, No. 5, 1186-1190 (May 1964).

6507. "Thumbtack" accelerometer for the 1.5-150

KC range, P. Hertelendy and P. Reynard. Rev.

Sci. Instr. 35, No. 10, 1305-1306 (Oct. 1964).

6508. Tomorrow's facilities for standards and measurements, H. F. Wollin. Scale J. 50, No. 9, 2 (June 1964).

6509. Training a computer to assign descriptors to documents: experiments in automatic indexing

and experiments in information correlation,

M. E. Stevens and G. H. Urban. Proc. Spring

Joint Computer Conf., Wash. D. C, April 1964,

25, 563-577 (Spartan Books, Bait., Md. , 1964).

6510. Transequatorial reception of a very-lowfrequency transmission, C. J. Chilton, A. Diede, and S. Radicella. J. Geophys. Res. 69, No. 7, 1319-1328 (Apr. 1, 1964).

6511. Transverse propagation of electromagnetic

waves in a cylindrically stratified plasma,

J. R. Wait. Proc. Radio Physics Symp., Univ. Calif., Los Angeles, Aug. 7-9, 1963, ed.

J. Brandstatter (Holden-Day Inc., San Francisco,

Calif., 1964).

6512. Triggered fuse for load protection, J. H. Rogers. Rev. Sci. Instr. 35, No. 12, 1715 (Dec. 1964).

6513. Triplet-state energy transfer from acetone

to aliphatic aldehydes in the gas phase, R. E. Rebbert and P. Ausloos. J. Am. Chem. Soc. 86,

No. 22, 4803-4807 (Nov. 1964).

6514. Tropospheric propagation, P. L. Rice and

J. W. Herbstreit. Advan. Electron. Electron Phys.

20, 199-259 (1964). 6515. Tropospheric refraction and attenuation of radio waves, B. R. Bean. Book, Advances of Radio

Research, p. 53-155 (Academic Press Inc., New

York, N. Y. , June 1964)

.

6516. Two-crystal scintillation pair-spectre

Ziegler, Nuclear Insi 1964).

6517. Ultrasoi

, Wyckoff, and H. W. Koch,

r. Methods 24, 301-315 (Feb. 13, Lcally induced nuclear spin transiLferromagnetic KMnF 3 , A. B. Denison,

L. W. Jame: J. D. Currin, W. H. Tantti'la, and

R. J. Mahler. Phys. Rev. Letters 12, ] 244-245 (1964)

.

6518. Units and standards of electrical

F. K. Harris. Electron. World 72, No. 2, 29-32

(Aug. 1964).

6519. "U-spin equalities and octet symmetry

breaking, S. Meshkov, G. A. Snow, and G. B. Yodh.

Phys. Rev. Letters 13, No. 6, 212-217 (Aug. 1964).

6520. Use of high-strength ceramics in vibration

transducers, E. Jones. J. Acoust. Soc. Am. 36,

No. 6, 1215-1216 (June 1964).

6521. Use of the index of refraction as a means for study of plasma configurations, E. G. Johnson.

Phys. Fluids 7, No. 9, 1551-1552 (Sept. 1964).

6522. Utility of the Tait equation relating volume376

and pressure in the study of transitions in polymers, L. A. Wood. J. Polymer Sci. B2, No. 7 703-707 (July 1964).

6523. Vacuum ultraviolet absorption spectra of oxygen in liquid and crystalline argon and nitrogen, A. M. Bass and H. P. Broida. J. Mol. Spectry.

12, No. 3, 221-230 (Mar. 1964).

6524. Vacuum ultraviolet photochemistry, J. R. McNesby and H. Okabe. Book, Advances in Photochemistry, Ed. W. A. Noyes, Jr., G. S. Hammond, and J. N. Pitts, Jr., 3, 157-240 (Interscience

Publ. Inc., New York, N. Y. , 1964).

6525. Vacuum ultraviolet photochemistry, H. Okabe

and D. A. Becker. J. Chem. Phys. 39, No. 10, 2549-2555 (Jan. 1964).

6526. Vapor-phase growth kinetics of potassium and mercury crystals, R. L. Parker and S. C. Hardy.

(Proc. Intern. Symp. Condensation and Evaporation

of Solids, Dayton, Ohio, Sept. 12-14, 1962), Book, Condensation and the Evaporation of Solids, Sec- tion II. Condensation of Solids, pp. 649-664

(Gordon and Breach, New York, N. Y. , 1964).

6527. Versatile stark waveguide for microwave spectroscopy, D. R. Lide. Rev. Sci. Instr. 35, No. 9, 1226 (Sept. 1964).

6528. v

3 vibration in condensed oxygen, nitrogen, and argon, S. Abramowitz and H. P. Broida. J. Chem. Phys. 39, No. 9, 2383-2384 (Nov. 1, 1964).

6529. Vibration-rotation bands of deuterium

cyanide and hydrogen cyanide, A. G. Maki, E. K. Pyler, and R. J. Thibault. J. Opt. Soc. Am. 54,

No. 7, 869-876 (July 1964).

6530. Waveguide noise-tube mount for use in an interlaboratory noise standard, C. K. S. Miller,

W. C. Daywitt, and E. Campbell. Acta. Imeko 3, 371-382 (1964). 6531. Weather resistance of porcelain enamels ex- posed for 7 years at various sites, M. A. Rushmer

and M. D. Burdick. Proc. Porcelain Enamel Inst. Forum 26, 214-226 (Oct. 14-16, 1964).

6532. Weierstrass points of F 0 (n), J. Lehner and

M. Newman. Ann. Math. 79, No. 1, 360-368 (1964). 6533. Weights and measures—a challenge to industry, M. W. Jensen. Proc. 50th Mid-Year Meeting

Chemical Specialties Manufacturers Assoc.,

Chicago, 111., May 18-20, 1964, pp. 24-26 (Chem. Specialties Mfg. Assoc. Inc., New York, N. Y., 1964)

.

6534. Weights and measures and aerosols, M. W. Jensen. Proc. 50th Annual Meeting Chemical Specialties Manufacturers Association, p. 33-35

(Dec. 1963); Scale J. 50, No. 6, 2 (Mar. 1964).

6535. What is needed next in the simulation of the arterial street? M. C. Stark. Proc. Highway Conf. Progress Related to the Future of Research and Development in Traffic Surveillance, Simulation

and Control, Washington, D. C. , Sept. 14-15,

1964, pp. 144 (Bureau of Public Roads, Washington,

D. C, 1964).

6536. What's new in control standards, H. L.' Mason. Control Eng. 11, No. 6, 85-87 (June 1964).

6537. Which measure of precision? F. J. Linnig

and J. Mandel. The evaluation of the precision

of analytical methods involving linear cali- bration curves, Anal. Chem. 36, No. 13, 25A-32A

(Dec. 1964).

6538. Weather resistance of porcelain enamels exposed for seven years at various sites,

M. A. Rushmer and M. D. Burdick. Proc. Porcelain

Enamel Inst. Forum 26, 214-226 (Oct. 14-16

1964)

.

6539. World days program, A. H. Shapley. IQSY Notes 5, 27-30 (Dec. 1963) ; 6, 27-32 (Mar. 1964); 7, 13-15 (May 1964).
1965

6540. A bounded automorphic form of dimension zero

is constant, M. I. Knopp, J. Lehner, and M. Newman. Duke Math. J. 32, No. 3, 457-460 (Sept. 1965)

.

6541. A calorimetric determination of the enthalpy

of graphite from 1200 to 2600°K, E. D. West and

S. Ishirhara. (Proc. 3d Symp. Thermal Physical

Properties, Purdue Univ., Lafayette, Ind., Mar. 22-26, 1965), Book, Advances in Thermophysical

Properties at Extreme Temperatures and Pressures,

pp. 146-151 (American Society of Mechanical

Engineers, New York, N. Y. , 1965).

6542. A comparison between the National Bureau of Standards two-pressure humidity generator and

the National Bureau of Standards standard

hygrometer, S. Hasegawa, R. W. Hyland, and S. W. Rhodes. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol. 3, Fundamentals and Standards, Sec.

II, Paper 22, pp. 455-459 (Reinhold Publ. Corp., New York, N. Y. , 1965)

.

6543. A comparison of atomic frequency standards,

R. E. Beehler and R. C. Mockler. Book, Progress

in Radio Science, 1960-1963, Vol. I. Radio Standards and Measurements, pp. 20-26 (Elsevier Publ.

Co., Amsterdam, The Netherlands, 1965).

6544. A comparison of mountain slope and radiosonde

observations, C. A. Samson. Mo. Weather Rev. 93, No. 5, 327-330 (May 1965).

6545. A dumbbell model for dielectric dispersion

in paraffin-like solids, M. G. Broadhurst.

(Proc. Electrical Insulation Conf., Cleveland,

Ohio, Oct. 1964), Natl. Acad. Sci.-Natl. Res. Council Publ. 1238, pp. 129-132 (1965). 6546. A high-speed (milliseconds) method for the simultaneous measurement of enthalpy, specific

heat, and resistivity of electrical conductors

at high temperatures, A. Cezairliyan. (Proc. 3d Symp. Thermophysical Properties, Purdue Univ., Lafayette, Ind., Mar. 22-25, 1965), Book, Ad- vances in Thermophysical Properties at Ex- treme Temperatures and Pressures, pp. 253-263

(American Society of Mechanical Engineers, New York, N. Y., Mar. 1965).

6547. A latitude survey of the night airglow,

T. N. Davis and L. L. Smith. J. Geophys . Res.

70, No. 5, 1127-1138 (Mar. 1965).

6548. A line-formula notation system for co- ordination compounds, P. M. McDonnell and

R. F. Pasternack. J. Chem. Doc. 5, No. 1, 56- 60 (Feb. 1965).

6549. A method for determination of the tropospheric

temperature structure from ground-based measurement of oxygen emission, E. R. Westwater. Proc. 3d Symp. Remote Sensing of Environment, Infrared

Phys. Lab., Inst. Sci. Tech., University of Michigan, Ann Arbor, Mich., Feb. 1965, pp. 245-

256 (Mar. 1965).

6550. A method for measuring polarization in the vacuum ultraviolet, K. Rabinovitch, L. R. Canfield, and R. P. Madden. Appl. Opt. 4, No. 8, 1005-1010 (Aug. 1965).

6551. A method for the computation of the error function of a complex variable, O. N. Strand.

Math. Comp. XIX, No. 89, 127-129 (Jan. 1965).

6552. A new differential operator of the pure wave type, J. E. Lagnese. J. Differential

Equations 1, No. 2, 171-187 (Apr. 1965).

6553. A new speculation of terrestrial helium loss,

E. E. Ferguson, F. C. Fehsenfeld, and A. L.

Schmeltekopf . Planet. Space Sci. 13, 925-928

(1965). 6554. A one-dimensional model of polymer adsorption, E. A. DiMarzio and F. L. McCrackin. J. Chem. Phys. 43, No. 2, 539-547 (July 1965).

6555. A pneumatic bridge hygrometer for use as a working humidity standard, L. Greenspan. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry.

Vol. 3. Fundamentals and Standards, Sec. II, Paper 20, pp. 433-443 (Reinhold Publ. Corp., New

York, N. Y . , 1965).

6556. A possible mechanism for light absorption by interstellar grains, E. E. Ferguson and H. P. Broida. Astrophys. J. 141, No. 2, 807-809

(Feb. 1965).

6557. A proper accounting of conformation of a polymer near a surface, E. A. DiMarzio. J. Chem.

Phys. 42, No. 6, 2101-2106 (Mar. 1965).

6558. A pulsed refrigeration system for cryogenic

magnet application, T. R. Strobridge and D. B. Mann. (Proc. 1964 Cryogenic Engineering Conf., Univ. Pennsylvania, Phila., Pa., Aug. 18-24,

1964), Book, Advances in Cryogenic Engineering

10, Paper N-3, 54-61 (Plenum Press Inc., New

York, N. Y., 1965).

6559. A review of zinc oxide-eugenol type filling

materials and cements, G. M. Brauer. Rev. Beige.

Med. Dent.-Belg. Tijds. Tandheelk 20, No. 3, 323-364 (1965). 6559A. A semi-automatic technique for tuning a ref lectometer , M. H. Zanboorie. IEEE Trans. Microwave Theor. Tech. MTT-13, No. 5, 709-710

(Sept. 1965).

6560. A simple device for adjusting dental interferometers, H. J. Caul and J. W. Kumpula. J. Dental Res. 44, No. 6, 1412 (Nov. -Dec. 1965).

6561. A simple method for making stereoscopic

drawings, F. Ordway. Am. Mineralogist 50, 1496-1498 (1965).

6562. A simple method for measuring the amount of granular materials in sulfur mortars. C. L. Thompson. Mater. Res. Std. 5, No. 5, 242-243

(May 1965)

.

6563. A stable arc source of high ultraviolet

radiance, C. R. Yokley. Proc. Symp. Solar Radiation Simulation, Los Angeles, Calif., Jan. 18-20,

1965, pp. 107-110 (1965). 6564. A standard for extremely low values of spectral irradiance, R. Stair, W. B. Fussell, and

W. E. Schneider. Appl. Opt. 5, No. 1, 85-89

(Jan. 1965).

6565. A study of auroral absorption events at the south pole: 2. Conjugate properties, J. K. Har- greaves and H. J. A. Chivers. J. Geophys. Res.

70, No. 5, 1093-1102 (Mar. 1965).

6566. A study of errors in the measurement of microscopic spheres, C. P. Saylor. Appl. Opt. 4, No. 4, 477-486 (Apr. 1965).

6567. A study of the variation of the surface electrical resistance of lead iodide films with RH at room temperature, F. E. Jones. (Proc. 1963 Intern.

Symp. Humidity and Moisture, Washington, D. C),

Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol. 1. Principles

and Methods of Measuring Humidity in Gases, Ed.

R. E. Ruskin, Sec. Ill, Paper 37, pp. 361-365

(Reinhold Publ. Corp., New York, N. Y., 1965).

377
1965

6568. A systt i D-C and A-C voltage

L. Hermach, J. E. Griffin, and

E. S. Williams. IEEE Intern. Conv. Record 13, Pt. 11, 172-182 (Mar. 1965).

6569. A system for accurate direct and alternating

voltage measurements, F. L. Hermach, J. E. Griffin, and E. S. Williams. IEEE Trans. Instr. Meas. IM-14, No. 4, 215-224 (Dec. 1965).

6570. A test of analytical expressions for the thermal emittance of shallow cylindrical

cavities, F. J. Kelly and D. G. Moore. (Symp. Thermal Radiation of Solids, San Francisco,

Calif., Mar. 4-5, 1964), NASA Spec. Publ. SP-55, Session 1, Paper 10, pp. 117-131 (1965); Appl

.

Opt. 4, No. 1, 31-40 (Jan. 1965).

6571 . A theorem on the automorphs of a skew- symmetric matrix, M. Newman. Mich. Math. J. 12, 61-63 (1965). 6572. A theoretical model for predicting thermal stratification and self pressurization of a fluid container, R. W. Arnett and D. R. Millhiser. Proc. Conf. Propellant Tank Pressurizatior

and Stratification, Jan. 20-21, 1965, II, 1-16

(NASA, George C. Marshall Space Flight Center, Huntsville, Alabama, 1965).

6573. A two-channel nulling method for measuring attenuation constants of short sections of waveguide and the losses in waveguide joints,

R. W. Beatty. Proc. IEEE 53, No. 6, 642-643

(June 1965)

.

6574. A uniqueness theorem for entire functions,

R. F. DeMar. Proc. Am. Math. Soc. 16, No. 1, 6971 (Feb. 1965).

6575. A universal color language, K. L. Kelly. Color Eng. 3, No. 2, 16-21 (Mar. -Apr. 1965).

6576. A variable characteristic impedance coaxial

line, J. E. Cruz and R. L. Brooke. IEEE Trans.

Micro. Theory Tech. MTT-13, No. 4, 477-478

(July 1965)

.

6576A. Absolute determination of refractive indices

of gases at 47.7 gigahertz, A. C. Newell and

R. C. Baird. J. Appl. Phys. 36, No. 12, 2751-

2759 (Dec. 1965).

6577. Absolute measurement of W for polonium210 alpha particles in nitrogen, argon, and

an argon-methane mixture, Z. Bay and F. D. McLernon. Radiation Res. 24, No. 1, 1-8

(Jan. 1965).

6578. Acid bases. in analytical chemistry, I. M. Kolthoff, S. Bruckenstein, and R. G. Bates. Reprint from Kolthoff-Elving "Treatise on Analytical Chemistry," Pt. I, Sec. B, Chapt.

10, pp. 361-542 (Interscience Publ., New York,

N. Y. , 1965).

6579. Acids and bases in alcohol-water solvents,

R. G. Bates. Chem. Chem. Ind. (Japan) 18, 680-

685 (May 1965)

.

6850. Acoustical thermometer. An ultrasonic in- terferometer provides a new method for the precise measurement of low temperatures, H. H. Plumb and G. Cataland. Science 150, No. 3693, 155-161 (Oct. 8, 1965).

6580A. Action of zinc dust and sodium iodide in

N, N-dimenthylformamide on contiguous, secondary sulfonyloxy groups: a simple method for in- troducing non-thermal unsaturation, R. S. Tipson

and A. Cohen. Carbohydrate Res. I, No. 4, 338- 340 (1965). 6581. Adhesive bonding of various materials to hard tooth tissues. IV. Bonding to dentin,

enamel, and fluorapatite improved _by the use

of a surface-active comonomer, R. L. Bowen.

J. Dental Res. 44, No. 5, 906-911 (Sept. -Oct. 1965)

.

6582. Adhesive bonding of various materials to hard

tooth tissues. III. Bonding to dentin improved

by pretreatment and the use of surface-active

comonomer, R. L. Bowen. J. Dental Res. 44,

No. 5, 903-905 (Sept. -Oct. 1965).

6583. Adhesive bonding of various materials to hard

tooth tissues. II. Bonding to dentin promoted

by a surface-active comonomer, R. L. Bowen.

J. Dental Res. 44, No. 5, 895-902 (Sept. -Oct. 1965)

.

6584. Adhesive bonding of various materials to hard tooth tissues. I. Method of determining bond

strength, R. L. Bowen. J. Dental Res. 44, No. 4, 690-695 (July-Aug. 1965).

6585. Adhesive bonding of various materials to hard

tooth tissues. V. The effect of a surface-active

comonomer on adhesion to diverse substrates,

R. L. Bowen. J. Dental Res. 44, No. 6, 1369-1373

(Nov. -Dec. 1965).

6586. Adsorption of polymer molecules at low surface

coverage, C. A. J. Hoeve, E. A. DiMarzio, and

P. Peyser. J. Chem. Phys. 42, No. 7, 2558-2563

(Apr. 1965).

6587. Advances in electrical instrumentation, F. L. Hermach. Ind. Res. pp. 60-66 (June 1965).

6588. Aggregation in matrix models of resource flows,

D. Rosenblatt. Am. Stat. 19, No. 3, 36-39

(June 1965).

6589. An analysis of the effects of ground reflection in line-of-sight phase systems, M. C. Thompson, Jr. IEEE Trans. Ant. Prop. AP-13, No.

4, 564-567 (July 1965).

6590. An anomalous decrease of the elastic moduli

at very low temperatures in some 300 series stainless steels, R. P. Reed and R. P. Miksell

.

(Proc. 1964 Cryogenic Engineering Conf., Univ. Pennsylvania, Phil., Pa., Aug. 18-24, 1964), Book Advances in Cryogenic Engineering 10, Paper

A-5, 46-49 (Plenum Press Inc., New York, N. Y., 1965)

.

6591. An automatic method for obtaining data in the Weissf loch-Feenberg node-shift technique, R. W. Beatty. Proc. IEEE 53, No. 1, 79-80 (Jan. 1965).

6592. An experimental study of the backscattering of

5.3 meV alpha particles from platinum and monel

metal, D. Walker. Intern. J. Appl. Radiation

Isotopes 16, 183-189 (1965). 6593. An image source technique for calculating reflection of gamma rays or neutrons, C. Eisenhauer. Health Phys. 11, 1145—1154 (1965). 6594. An international comparison of current-ratio

standards at audio frequencies, B. L. Dunfee and

W. J. M. Moore. IEEE Trans. Instr. Meas. IM-14,

No. 4, 172-177 (Dec. 1965).

6595. An international comparison of inductive

voltage divider calibrations at 400 and 1000

Hertz, W. C. Sze, A. F. Dunn, and T. L. Zapf. IEEE Intern. Conv. Record 13, Pt . 11, 126-135

(Mar. 1965); IEEE Trans. Instr. Meas. IM-14,

No. 3, 124-131 (Sept. 1965).

6596. An investigation of concentric ring antennas

with low sidelobes, C. 0. Stearns and A. C. Stewart. IEEE Trans. Ant. Prop. AP-13, No. 6, 856-863 (Nov. 1965).

6597. An investigation of psychrometric measurement techniques in air conditioning calorimetry,

J. C. Davis and P. R. Achenbach. (Proc. 1963

Intern. Symp. Humidity and Moisture, Wash. D. C),

Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol. 2. Applications, Sec. IV, Paper 37, pp. 303-313 (Rein- hold Publ. Corp., New York, N. Y. , 1965).

378'
1965

6598. An unmodulated twin channel microwave at- tenuation measurement system, D. H. Russell.

ISA Trans. 4, 162-169 (Apr. 1965).

6599. Analogies between theories of antenna arrays

and passive networks, M. T. Ma. IEEE Intern. Conv. Record 13, Pt. 5, 150-154 (Mar. 1965).

6600. Analysis of the spectrum of triply ionized praseodymium (Pr IV), J. Sugar. J. Opt. Soc.

Am. 55, No. 9, 1058-1061 (Sept. 1965).

6601. Angular scattering law for the moon at 6- meter wavelength, W. K. Klemperer. J. Geophys

.

Res. Letters 70, No. 15, 3798-3800 (Aug. 1, 1965)

.

6602. Annual report of the National Bureau of Standards, spectroscopy, C. E. Moore. Astron.

J. 70, No. 9, 637-639 (Nov. 1965).

6603. Another method of synthesizing nonuniformly

spaced arrays, M. T. Ma. IEEE Trans. Ant. Prop. AP-13, No. 5, 833-834 (Sept. 1965).

6604. Application of a high-intensity, multi-slit

Raleigh interferometer to sedimentation studies,

I. H. Billick and R. J. Bowen. J. Phys . Chem.

69, 4024-4030 (1965). 6605. Application of cooled IR detector in an optical system, S. Abramowitz, A. M. Bass, and

A. E. Leciford, Jr. Appl . Opt. 4, No. 2, 255

(Feb. 1965).

6606. Approach to simple exponential decay in vibrational relaxation, T. Carrington. J. Chem.

Phys. 43, No. 2, 473-479 (July 15, 1965).

6607. Approximations to the distribution of quadratic forms, M. M. Siddiqui. Ann. Math. Stat.

36, No. 2, 677-682 (Apr. 1965).

6608. Are our neighbors from abroad aware of standards and what standards can do for them?

A. T. McPherson. Proc . 13th Annual Meeting

Standard Engineering Society, New York, N. Y.

,

Sept. 3, 1964, pp. 11A1-11A2 (1965). 6609. Atomic lifetimes in neon I, J. Z. Klose. Astrophys. J. 141, No. 2, 814-818 (Feb. 1965).

6610. Avoiding errors from stray radiation in measuring the spectral emittance of diffusely reflecting specimens, H. E. Clark. Appl. Opt. Letter to Editor 4, No. 10, 1356-1357 (Oct. 1965)

.

6611. AXLE: An axiomatic language for string

transformations, K. Cohen and J. H. Wegstein.

Commun. Assoc. Comptl . Mach. 8, No. 11, 657-661

(Nov. 1965).

6612. Beam loading in linear accelerators, J. E. Leiss. IEEE Trans. Nuclear Sci. NS-12, No. 3, 566-579 (June 1965)

.

6613. Blood: bone equilibrium in calcium homeostasis, J. MacGregor and W. E. Brown. Nature

205, No. 4969, 359-361 (Jan. 1965).

6614. Bounds for class numbers, M. Newman. Proc. Am. Math. Soc. Symp. Number Theory, pp. 70-77 (1965). 6615. Breadth of decay quanta in gas lasers,

J. A. White. J. Opt. Soc. Am. 55, No. 11, 1436-1442 (Nov. 1965).

6616. Breakdown characteristics of semi-conductor

materials, H. A. Schafft. Electro-Technol . 75, No. 6, 77-82 (June 1965).

6617. Buffer solutions of tris (hydroxymethyl) aminomethane for pH control in 50 weight percent methanol from 10 to 40 , C. M. Woodhead, M. Paabo, R. A. Robinson, and R. G. Bates. Anal.

Chem. 37, 1291 (1965). 6613. Calculation of electronic energies in HC02 , HC02 and HC02 , W. H. Kirchhoff, J. Farren, and

J. W. Llnnett. J. Chem. Phys. 42, No. 4, 1410-

1422 (Feb. 15, 1965).

6619. Calculation of the temperature of a flat-plate

wet surface under adiabatic conditions with re- spect to the Lewis relation, T. Kusuda. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol.

1. Principles and Methods of Measuring Humidity in Gases, Ed. R. E. Ruskin, Sec. I, Paper 2, pp. 16- 32 (Reinhold Publ. Corp., New York, N. Y. , 1965).

6620. Calibration of Bell-type provers by bottling

and strapping, C. T. Collett. (Proc. 24th Annual Appalachian Gas Measurement Short Course, 1964), West Virginia Univ. Tech. Bull. 73, 59-65 (1965). 6621. Calibration of microphones, vibration pickups,

and earphones, R. K. Cook, S. Edelman, and W. Koidan. J. Audio Engr. Soc. 13, No. 4, 290-296

(Oct. 1965).

6622. Unassigned.

6623. Calibration of peak A-C to D-C comparators,

D. Flach and L. A. Marzetta. (ISA 20th Annual Conference and Exhibit, Los Angeles, Calif., Oct.

4-7, 1965), ISA Preprint 14. 2-3-65 (1965). 6624. Calibration of Schlieren systems, J. R. MeyerArendt and E. P. Shettle. J. Appl. Opt. Letter

to Editor 4, No. 6, 757 (June 1965).

6625. Cavity resonances for a spherical earth and

a concentric shell, J. R. Wait. J. Atmospheric

Terrest. Phys. 27, 81-89 (1965). 6626. Cesium beam atomic time and frequency standards, R. E. Beehler, R. C. Mockler, and J. M. Richardson. Metrologia I, No. 3, 114-131 (July 1965)

.

6627. Characteristic variations in the antarctic

ionosphere, V. L. Peterson, G. H. Stonehocker, and

J. W. Wright. Antarctic Research Series, Am. Geophys. Union, Geomagnetism and Aeronomy 4, 47-

75 (1965). 6628. Characteristics of a Raman laser excited by

an ordinary ruby laser, H. Takuma and D. A. Jennings. Proc. IEEE 53, No. 2, 146-149 (Feb. 1965).

6629. Characteristics of dosimeter films processed

in phenidone-thiosulfate monobaths, M. Ehrlich.

J. Phot. Sci. Eng. 9, No. 1, 1-9 (Jan. -Feb. 1965).

6630. Characteristics of soil and vegetated surfaces

to reflected and emitted radiation, D. M. Gates. Proc. 3d Symp. Remote Sensing of Environment,

Infrared Phys. Lab., Inst. Sci. Tech., University

of Michigan, Ann Arbor, Mich., Feb. 1965, pp. 573-600 (Mar. 1965).

6631. Characteristics of the "synchrotron light" from the NBS 180 MeV machine, K. Codling and

R. P. Madden. J. Appl. Phys. 36, No. 2, 380-

387 (Feb. 1965).

6632. Chemical analysis, G. M. Brauer and G. M. Kline. Encyclopedia of Polymer and Technology

3, 633-665 (John Wiley & Sons, Inc., New York,

N. Y., 1965).

6633. Chemical structures as information—representations, transformation, and calculations, S. J. Tauber, G. F. Fraction, and H. W. Hayward. Book, Colloquium on Technical Preconditions for Retrieval Center Operations, Philadelphia, Pa., Apr. 24-25,

1964, Ed. B. F. Cheydleur, pp. 73-101 (Spartan

Books. Inc., Washington, D. C, 1965).

6634. Chromatography on glass of controlled pore

size, W. Haller. Nature 206, 693-696 (1965).

6635. Classical diagram technique for calculating

thermostatic properties of solids; application to dielectric susceptibility of paraelectrics

,

R. M. Wilcox. Phys. Rev. 139, No. 4A, A1281-

A1291 (Aug. 16, 1965). 379
1965

6636. Clinical behavior of o-ethoxybenzoic acid- eugenol-zinc oxide cements, S. Civjan and G. M. Brauer. J. Dental Res. 44, No. 1, 80-83 (Jan.-

Feb. 1965).

6637. Clinical evaluation of complete dentures made

of eleven different types of denture base materials, J. B. Woelfel, G. C. Paf fenbarger , and

W. T. Sweeney. J. Am. Dental Assoc. 70, No. 7, 1170-1188 (May 1965)

.

6638. Code for electricity metering, F. K. Harris, revised, Mag. Std. 36, No. 5, 143-145 (May 1965).

6639. Color filter nomograph, C. S. McCamy. Am. Cinematographer 46, No. 5, 314-315 (May 1965).

6640. Combustion and reaction calorimetry of several compounds of interest in a light element program,

G. T. Armstrong. (Proc. 3rd Meeting of the ICRPG Working Group on Thermochemistry, El Segundo,

Calif., Mar. 17-18, 1965), Chemical Propulsion

Information Agency I, No. 82 (U) , 81-88 (July 1965)

.

6641. Comment on the "difference between a nonLTE and a pure absorption, model for the line- blanketing effect," R. N. Thomas. Astrophys.

J. 141, No. 1, 333-335 (Jan. 1, 1965).

6642. Comments on the surface characterization

of real metals, D. P. DeWitt. (Symp. Thermal Radiation of Solids, San Francisco, Calif.,

Mar. 4-5, 1964), NASA Spec. Publ. SP-55, Session

II, Paper 12, pp. 141-144 (1965). 6643. Comments on "The use of transforms to sum array factors," M. T. Ma. IEEE Trans. Ant. Prop. AP-13, No. 1, 174 (Jan. 1965).

6644. Commercial carbon composition resistors as pressure transducers, C. E. Miller, J. W. Dean, and T. M. Flynn. Rev. Sci. Instr. 36, No. 2, 231-232 (Feb. 1965).

6645. Comparison of xenon and carbon arcs as radiation sources for laboratory weathering of asphalts,

K. G. Martin, P. G. Campbell, and J. R. Wright.

Am. Soc. Testing Mater. Proc. 65, 809-830 (1965).

6646. Comparisons of tearing-strength for leather,

T. J. Carter. J. Am. Leather Chem. Assoc. LX, No. 1, 4-14 (Jan. 1965).

6647. Composition, work and interrelation of in- ternational and national organization engaged in the standardization of dental materials and therapeutic agents, G. C. Paf f enbarger and

M. Kumpula. Intern. Dent. J. 15, No. 4, 571-587

(Dec. 1965).

6648. Compound-atom states for two-electron systems, T. 0' Mai ley and S. Geltman. Phys. Rev. 137,

No. 5A, A1344-A13 52 (Mar. 1, 1965).

6649. Computer control of precision instrument in- ventory, S. N. Alexander and P. E. Doyle. Re- search/Develop, pp. 38-43 (May 1965).

6650. Condensation of tungsten on tungsten in atomic

detail: Monte Carlo and statistical calculations

vs experiment, R. D. Young and D. C. Schubert.

J. Chem. Phys. 42, No. 11, 3943-3950 (June 1965).

6651. Condensation of tungsten on tungsten in atomic

detail: observation with the field ion microscope,

P. Gurney, Jr., F. Hutchinson, and R. D. Young.

J. Chem. Phys. 42, No. 11, 3939-3943 (June 1965).

6652. Conductance of glass immersed in molten salts,

K. H. Stern. J. Electrochem. Soc. 112, No. 2, 208-211 (Feb. 1965).

6653. Configuration interaction in H3 and H 2 , C. Edmiston and M. Krauss. J. Chem. Phys. 42, No. 4, 1119 (Feb. 1965).

6654. Conformation of polystyrene absorbed at the 0-temperature, R. R. Stromberg, D. J. Tutas, and

E. Passaglia. J. Phys. Chem. 69, No. 11, 3955-

3963 (Nov. 1965).

6655. Conjugate observations of solar proton events: delayed ionospheric changes during twilight,

H. J. A. Chivers and J. K. Hargreaves. Planet. Space Sci. 13, 583-592 (1965).

6656. Considerations when using turbine-type flow- meters in cryogenic service, W. J. Alspach and

T. M. Flynn. (Proc. 1964 Cryogenic Engineering

Conf., Univ. Pennsylvania, Phila., Pa., Aug. 18-

24, 1964), Book, Advances in Cryogenic Engineering

10, Paper F-3, 246-252 (Plenum Press Inc., New

York, N. Y., 1965).

6657. Continuous-absorption hygrometry with a pneumatic bridge utilizing critical flow,

W. A. Wildhack, T. A. Perls, C. W. Kissinger,

and J. W. Hayes. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C),

Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol. 1. Principles and Methods of Measuring Humidity

in Gases, Sec. VI, Paper 53, pp. 552-570 (Jan. 1965)

.

6658. Continuum states of H and the free-free absorption coefficient, S. Geltman. Astrophys.

J. 141, No. 2, 376-394 (Feb. 15, 1965).

6659. Control of relative humidity and temperature

in rubber laboratory of National Bureau of Standards, F. L. Roth and R. D. Stiehler. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry,

Vol. 2. Applications, Sec. Ill, Paper 35, pp. 287-292 (Reinhold Publ. Corp., New York, N. Y.

,

1965)

.

6659A. Correction in the laboratory measurement of rate constant for Ng + 02 - N 2 + 0 2 + at 300°K,

F. C. Fehsenfeld, A. L. Schmeltekopf , and E. E. Ferguson. Planetary Space Sci. 13, 919-920

(Sept. 1965).

6660. Correction of optical distance measurements

for the fluctuating atmospheric index of refraction, J. C. Owens and P. L. Bender. J. Geophys.

Res. 70, No. 10, 2461-2462 (May 15, 1965).

6661. Correlated walk and diffusion equations in a driving force, J. R. Manning. Phys. Rev. 139,

No. 1A, A126-A135 (July 5, 1965).

6662. Correlation and prediction of thermal con- ductivity of metals through the application of

the principle of corresponding states,

A. Cezairliyan and Y. S. Touloukian. (Proc. 3d

Symp, Thermophysical Properties, Purdue Univ., Lafayette, Ind. , Mar. 22-25, 1965), Book, Advances in Thermophysical Properties at Extreme Temperatures and Pressures, pp. 301-313 (Amer- ican Society of Mechanical Engineers, New York,

N. Y., Mar. 1965).

6663. Cosmic noise absorption events at geomagnetically conjugate stations, C. G. Little, E. R. Schiffmacher, H. J. A. Chivers, and K. W. Sullivan.

J. Geophys. Res. 70, No. 3, 639-648 (Feb. 1, 1965).

6664. Cosmic-noise survey at 65 degrees (N) declination in the 5-50 Mc/ s band, R. Parthasarathy and

G. M. Lerfald. Monthly Notices Roy. Astron. Soc.

129, No. 6, 395-409 (1965). 6665. Critical examination of vibrational energy transfer theory, F. H. Mies. J. Chem. Phys. 42,

No. 8, 2709-2720 (Apr. 15, 1965).

6666. Critical-point phenomena. M. S. Green. Science

150, No. 3693, 229-236 (Oct. 8, 1965).

380
1965

6667. Cryogenic coil for megajoule energy storage,

V. Arp. Proc. Intern. Symp. Magnet Technology,

Ed. H. Brechna and H. S. Gordon, pp. 62 5-629

(U.S. Atomic Energy Commission, 1965).

6668. Cryogenics and space technology, R. B. Scott.

Proc. Xlth Intern. Congress of Refrigeration,

Munich, Germany, 1963, pp. 105-114, (Pergamon Press Inc., New York, N. Y., 1965).

6669. Crystal and molecular structure of C4B20H22,

bis (o-dodecacarborane) , L. H. Hall, A. Perloff,

F. A. Mauer, and S. Block. J. Chem. Phys. 43,

No. 11, 3911-3917 (Dec. 1965).

6670. Crystal growth and thermal etching of argon,

G. L. Pollack and E. N. Farabaugh. J. Appl.

Phys. 36, 513 (1965).

6671. Crystal growth as chemical research, H. S. Peiser and J. L. Torgesen. Chemistry 38, 15-20

(1965).

6672. Crystal imperfections in magnesium fluoride,

D. J. Barber. J. Appl. Phys. 36, No. 10, 3342-3349 (Oct. 1965).

6673. Crystal structure of gamma-dicalcium silicate, D. K. Smith, A. Majumdar, and F. Ordway. Acta Cryst. 18, 787 (Apr. 1965).

6674. Current programs in the U. S. Department of Commerce for advancing state science and technology, W. C. Bandy. Mid-Continent Research

and Development Council, Report Proc. 11th Annual Meeting, Denver, Colo., Oct. 19-20, 1964,

pp. 70-76 (1965).

6675. Damping of the giant resonance in heavy

nuclei, M. Danos and W. Greiner. Phys. Rev. 138,

No. 4B, B876-891 (May 1965).

6676. Decyclization of cyclohexene, 4-methylcyclohexene, and 4-vinyl-cyclohexene in a single-pulse

shock tube, W. Tsang. J. Chem. Phys. 42, No. 5, 1805-1809 (Mar. 1, 1965).

6677. Definition of "ampere" and "mangetic con- stant," C. H. Page. Proc. IEEE Letter to Editor

53, No. 1, 100-101 (Jan. 1965).

6678. Density distribution of polymer segments in the vicinity of an absorbing interface, C. A. J. Hoeve. J. Chem. Phys. 43, No. 9, 3007-3008

(Nov. 1, 1965).

6679. Density expansion of the viscosity of a moderately dense gas, J. V. Sengers. Phys. Rev. Letters 15, No. 12, 515-517 (Sept. 20, 1965).

6680. Dependence of the critical frequency of the ionospheric E-layer on solar zenith angle and

the annual variation in E-layer ionization,

T. Shimazaki. Nature 205, No. 4974, 889-891

(Feb. 27, 1965).

6681. Degree of metamerism, I. Nimeroff and J. A. Yurow. J. Opt. Soc. Am. 55, No. 2, 185-190

(Feb. 1965).

6682. Dependence of the superconducting transition

conducting SrTi03 , J. F. Schooley, W. R. Hosier,

E. Ambler, J. H. Becker, M. L. Cohen, and C. S. Koonce. Phys. Rev. Letters 14, No. 9, 305-307

(Mar. 1, 1965).

6683. Description and analysis of the third spec- trum of cerium (Ce III), J. Sugar. J. Opt. Soc.

Am. 55, No. 1, 33-58 (Jan. 1965).

6684. Designation of Ligand positions in inorganic

complexes, R. F. Pasternack and P. M. McDonnell.

Inorg. Chem. 4, No. 4, 600-602 (Apr. 1965).

6685. Determination of hide substance in leather

by the Kjeldahl method, S. Dahl . Book, The Chemistry and Technology of Leather IV, Ch. 52,

4 5-70 (Reinhold Publ . Corp., New York, N. Y.

,

1965)

.

6686. Determination of reducing end-groups by reaction with C

14 - labeled cyanide, H. S. Isbell. Book, Methods in Carbohydrate Chemistry, Ed. R. L. Whistler, 5, 249-250 (Academic Press Inc., New York, N. Y., 1965).

6687. Determination of tellurium by cathode-ray polarography , E. J. Maienthal and J. K. Taylor.

Anal. Chem. 37, No. 12, 1516-1519 (Nov. 1965).

6688. Determination of the composition of com- plexes and their instability constant by calorimetry. I. The cuprocyanide complexes,

A. Brenner. J. Electrochem. Soc. 112, No. 6, 611-621 (June 1965)

.

6689. Determination of the probability distribution of the number of secondary electrons, Z. Bay and G. Papp. Elec. Commun. 40, No. 1, 134

(1965) . 6690. Determining moisture in solid materials by reaction with calcium carbide, S. Dahl. Mater.

Res. Std. 5, No. 9, 446-453 (Sept. 1965).

6691. Deuterium isotope effect in vacuum-ultraviolet absorption coefficients of water and

methane, A. H. Laufer and J. R. McNesby. Can.

J. Chem. 43, No. 12, 3487-3490 (Dec. 1965).

6692. Differences in the characteristic electron energy-loss spectra of solid and liquid bismuth,

C. J. Powell, Phys. Rev. Letters 15, No. 22, 852-854 (Nov. 29, 1965).

6693. Digital handling of chemical structures and associated information, S. J. Tauber. Proc. 20th Natl. Conf. Association for Computing

Machinery, pp. 206-216 (1965). 6694. Dimensional changes of dental amalgam as- sociated with strain release in the silver alloy particles, G. Dickson and R. M. Waterstrat.

J. Dental Res. (Res. Annotation), 44, No. 3, 620 (May-June 1965)

.

6695. Dipole moment of PC1 4 F from the nonresonant microwave absorption of the vapor, A. A. Maryott

and S. J. Kryder. J. Chem. Phys. 43, No. 7, 2556-2557 (Oct. 1, 1965).

6696. Direct and inert-gas-sensitized radiolysis

and photolysis of methane in the solid phase,

P. Ausloos, R. E. Rebbert, and S. G. Lias.

J. Chem. Phys. 42, No. 2, 540-548 (Jan. 15, 1965)

.

6697. DC dielectric conductance (reciprocal re- sistance) and conductivity (reciprocal resistivity) measurements, A. H. Scott. Book, Testing of Polymers 1, Ch. 6, 213-236 (Interscience

Publ. Inc., New York, N. Y. , 1965).

6698. Direct observation of the decomposition

multiply charged ions into singly charged fragments, K. E. McCulloh, T. E. Sharp, and H. M. Rosenstock. J. Chem. Phys. 42, No. 10, 3501-

3509 (May 15, 1965).

6699. Direct observation of the optical anisotropy of the holmium nucleus, E. Ambler, E. G. Fuller, and H. Marshak. Phys. Rev. 138, No. IB, B117-B126 (Apr. 12, 1965).

6700. Discussion on the Mossbauer effect, J. R. DeVoe. (Proc. Intern. Atomic Energy Agency Symp. Radiochemical Methods of Analysis, Salzburg, Austria, Oct. 19-23, 1964), Book, Radiochemical

Methods of Analysis I, 19-20 (Intern. Atomic Energy Agency, Vienna, Austria, 1965).

6701. Dislocations and stacking faults in rutile crystals grown by flame-fusion methods, D. J.

381
1965 Barber and E. N. Farabaugh. J. Appl. Phys . 36, N0 . 9, 2803-2806 (Sept. 1965).

6702. Dispersion characteristics of the 1.15fi HeNe laser line, H. S. Boyne, M. M. Birky, and

W. G. Schweitzer, Jr. Appl. Phys. Letters 7, No. 3, 62-65 (Aug. 1, 1965).

6703. Displacement of dislocation images formed

in transmission electron microscopy. R. DeWit

.

J. Appl. Phys. 36, No. 1, 329-330 (Jan. 1965).

6704. Dissociation constant of acetic acid in deuterium oxide from 5 to 50 . Reference

points for a pD scale, R. Gary, R. G. Bates, and R. A. Robinson. J. Phys. Chem. 69, No. 8, 2750-2753 (1965). 6705. Dissociation of acetic acid-d3 in aqueous solution and related isotope effects from 0 to

50 , M. Paabo, R. G. Bates, and R. A. Robinson.

J. Phys. Chem. 70, 540-543 (1966). 6706. Dissociation of H 2 by electron impact,

G. H. Dunn, B. Van Zyl, and R. H. Zare. Phys.

Rev. Letters 15, No. 15, 610 (Oct. 11, 1965).

6707. Dissociative recombination in helium afterglows, E. E. Ferguson, F. C. Fehsenfeld, and

A. L. Schmeltekopf . Phys. Rev. 138, A381-A385

(Apr. 1965).

6708. Drift-free Mossbauer spectrometer, F. C. Ruegg, J. J. Spijkerman, and J. R. DeVoe. Rev.

Sci. Instr. 36, No. 3, 356-359 (Mar. 1965).

6709. Drift mobility and diffusion for impurities

in ionic crystals, J. R. Manning. Phys. Rev.

139, No. 6A, A2027-A2034 (Sept. 13, 1965).

6710. Dynamic collective theory of odd-A nuclei,

M. Danos, W. Greiner, and C. B. Kohr. Phys.

Rev. 138, No. 5B, B1055-B1066 (June 1965).

6711. Dynamic spectral characteristics of micro- pulsation pearls, J. H. Pope. J. Geophys. Res.

70, No. 15, 3595-3603 (Aug. 1, 1965).

6712. Educating metrologists , T. R. Young. Ordnance XLIX, No. 268, 432-435 (Jan. -Feb. 1965).

6713. Effect of electrical fields and density in the radiolysis of ethane, H. H. Carmichael,

R. Gorden, Jr., and P. Ausloos. J. Chem. Phys.

42, No. 1, 343-351 (Jan. 1, 1965).

6714. Effect of moisture on surface flammability

of coated and uncoated cellulosic materials,

T. G. Lee, J. L. Loftus, and D. Gross. Am. Soc

.

Testing Materials Spec. Tech. Publ. 385, 112-

123 (May 1965)

.

6715. Effect of surface texture on diffuse spectral

reflectance, Part A. Diffuse spectral reflectance of metal surfaces, H. J. Keegan, J. C. Schleter, and V. R. Weidner. (Symp. Measurement

of Thermal Radiation of Solids, San Francisco, Calif., Mar. 4-6, 1964), NASA Spec. Publ.

SP-55, Session II, Paper 17, pp. 165-169 (1965). 6716. Effect of surface texture on diffuse spectral

reflectance. Part B. Surface texture measurement

on metal surfaces, D. B. Spangenberg, A. G. Strang, and J. L. Chamberlin. (Symp. Measurement of Thermal Radiation of Solids, San Francisco, Calif.,

Mar. 4-6, 1964), NASA Spec. Publ. SP-55, Session

II, Paper 17, pp. 169-177 (1965). 6717. Effect of temperature on the vacuum ultraviolet transmittance of lithium fluoride, calcium

fluoride, barium fluoride, and sapphire, A. H. Laufer, J. A. Pirog, and J. R. McNesby. J. Opt.

Soc. Am. 55, No. 1, 64-66 (Jan. 1965).

6718. Effects of finite lattice heat capacity on spin-lattice relaxation, R. L. Peterson. Phys.

Rev. 137, No. 5A, A1444-A1448 (Mar. 1965).

6719. Effects of tropospheric refraction in earth- space links, K. A. Norton. Book, Progress in Radio Science 1960-1963 —Radio and Troposphere,

Ed. F. du Castel, II, 186-210 (Elsevier Publ.

Co., Amsterdam, The Netherlands, 1965).

6720. Elastic constants of cubic lead fluoride at room temperature, J. H. Wasilik and M. L. Wheat.

J. Appl. Phys. 36, No. 3, Pt . 1, 791-793 (Mar. 1965)

.

6721. Elastic resonances in electron scattering

from He, Ne, Ar, Kr, Xe, and Hg, C. E. Kuyatt,

J. A. Simpson and S. R. Mielczarek. Phys.

Rev. 138, No. 2A, A385-A399 (Apr. 19, 1965).

6722. Elastic stress-strain relations in perfect elastic fluids, B. Bernstein, E. Kearsley, and

L. Zapas. Trans. Soc. Rheol . 9, Pt. 1, 27-39

(1965) . 6723. Electrochemical methods, J. K. Taylor,

E. J. Maienthal and G. Marinenko. Book, Trace

Analysis: Physical Methods, Ed. G. H. Morrison,

Chapt. 10, pp. 377-433 ( Interscience Publ. Inc., New York, N. Y. , 1965)

.

6724. Electrode potentials in fused systems. IX. Liquid junction potentials in the AgCl-AgBr

system, K. H. Stern. J. Electrochem. Soc. 112, No. 10, 1049-1050 (Oct. 1965).

6725. Electrodeposition of alloys, past, present, and future, A. Brenner. Plating 52, No. 12, 1249-1257 (Dec. 1965).

6726. Electromagnetic properties of a quantized relativistic electron-positron gas, L. A. Steinert. II Nuovo Cimento, Serie X, 36, 935-

953 (Apr. 1965).

6727. Electromagnetic wave propagation and re- lativistic damping effects in a uniformly magnetized electron-positron gas, L. A. Steinert. II Nuovo Cimento 40, No. 10, 345-

374 (Dec. 1965).

6727A. Electron accelerators for food processing,

H. W. Koch and E. H. Eisenhower. (Proc. Intern.

Conf. Radiation Preservation of Foods, Boston,

Mass., Sept. 27-30, 1964), Natl. Acad. Sci.-

Natl. Res. Council Publ. 1273, pp. 149-180

(1965)

.

6728. Electron density measurements in the magnetically confined arc, C. K. McLane, S. Takeda,

R. C. Thompson, and W. E. Thomas, Jr. J. Appl.

Phys. 36, No. 2, 337-341 (Feb. 1965).

6729. Electron microscopy and diffraction of aluminum oxide whiskers, D. J. Barber. Phil.

Mag. 10, No. 103, 75-94 (May 1965).

6730. Electron microscopy and diffraction of syn- thetic corundum crystals. I. Pure aluminum oxide

grown by the Verneuil process, D. J. Barber and

N. J. Tighe. Phil. Mag. 11, No. Ill, 495-512

(May 1965).

6731. Electron paramagnetic resonance and the pri- marily 3d wavefunctions of the tetrachlorocuprate

ion, M. Sharnoff. J. Chem. Phys. 42, No. 10, 3383-3395 (1965).

6732. Electron paramagnetic resonance spectrum of bis-8-hydroxyquinolate-copper (II) dihydrate,

G. F. Kokoszka, H. C. Allen, Jr. and G. Gordon.

J. Chem. Phys. 42, No. 10, 3730-3731 (May 15, 1965)

.

6733. Electron paramagnetic resonance spectra of zinc-doped copper acetate monohydrate, G. F. Kokoszka, H. C. Allen, Jr., and G. Gordon. J. Chem. Phys. 42, No. 10, 3693-3697 (May 15, 1965).

382
1965

6733A. Electron precipitation and ionospheric

radio absorption in the auroral zones, K. L. Hargreaves and R. D. Sharp. Planetary Space

Sci. 13, 1171-1183 (Dec. 1965).

6734. Emission spectroscopy, B. F. Scribner and

M, Margoshes. Treatise on Analytical Chemistry,

Ed. I. M. Kolthoff and P. J. Elving, 6, Pt. 1, Chapt. 64, 3347-3461 ( Interscience Publ. Inc., New York, N. Y. , 1965).

6735. Emission spectrum of CF, T. L. Porter, D. E. Mann, and N. Acquista. J. Mol. Spectry. 16, 228

(June 1965).

6736. Empirical relations for energy levels of atoms and ions, A. E. Goertz. J. Opt. Soc. Am.

55, 742-743 (June 1965)

.

6737. Energy levels of Pr 3+ in the vapor state,

J. Sugar. Phys. Rev. Letters 14, No. 18, 731-

732 (May 3, 1965).

6738. Energy of the formation of the anion Frenkel

pair in calcium fluoride, A. D. Franklin. J. Phys. Chem. Solids 26, 933-934 (1965). 6739. Equilibrium pressures of oxygen over Mn02 - Mn2 03 at various temperatures, E. M. Otto. J. Electrochem. Soc. 112, No. 4, 367-370 (Apr. 1965)

.

6740. Error bounds for asymptotic expansions of special functions in the complex plane, F. W. J. Olver. Proc. Symp. on Error in Digital Computation, U.S. Army Research Center, Madison, Wisconsin, April 26-28, 1965, Vol. 2, pp. 55-75

(John Wiley and Sons, Inc., New York, N. Y., 1965)

.

6741. Error bounds for asymptotic solutions of second-order differential equations having an irregular singularity of arbitrary rank, F. W. J. Olver and F. Stenger. J. SIAM, Ser. B. 2, No. 2, 244-249 (1965). 6742. ESR measurement of metastable atomic nitrogen in helium-nitrogen afterglows, K. M. Evenson

and H. E. Radford, Phys. Rev. Letters 15, No. 24, 916-917 (Dec. 1965).

6743. Estimation for a one-parameter exponential

model, J. A. Speckman and R. G. Cornell. J. Am. Stat. Assoc. 60, 560-572 (1965). 6744. Estimation of the parameters of the Hyper- Poisson distributions, E. L. Crow and G. E. Bardwell. (Proc. Symp. Classical and Contagious Discrete Distribution, Montreal, Canada,

Aug. 15-20, 1963), Chapt. V, pp. 127-140

(Statistical Publ. Soc, Calcutta, India, 1965).

6745. Etch pits in chromic oxide, W. S. Brower, Jr. and E. N. Farabaugh. J. Appl. Phys. 36, No. 4, 1489-1490 (Apr. 1965).

6746. Evidence for an electrochemical-mechanical

stress corrosion fracture in a stainless steel,

H. L. Logan, M. J. McBee, and D. J. Kahan. Corrosion Sci. 5, 729-730 (1965). 6747. Excitation of molecular rotation by slow

electrons, K. Takayanagi and S. Geltman. Phys.

Rev. 138, No. 4A, A1003-A1010 (May 17, 1965).

6748. Excitation of optically forbidden states in the ionization continuum by electron impact,

J. A. Simpson, G. E. Chamberlain, and S. R. Mielczarek. Phys. Rev. 139, No. 4A, A1039-

A1041 (Aug. 1965).

6749. Experimental atomic scattering factors for magnesium oxide, G. Bur ley. J. Phys. Chem. Solids 26, 1605-1613 (Apr. 8, 1965).

6750. Experimental fires in enclosures, A. F. Robertson. Tenth Symp. (Intern.) on Combustion, Cambridge, England, Aug. 1964, pp. 931-942 (1965)

.

6751. Experimental verification of the WLF super- position technique, A. J. Bur. (Proc. Electrical

Insulation Conf. , Cleveland, Ohio, Oct. 1964),

Natl. Acad. Sci. -Natl. Res. Council Publ. 1238,

pp. 70-71 (1965). 6752. Experiments in electron scattering, L. L. Marton. Lab. Invest. 14, Pt. II, No. 6, 754

(1965).

67 53. Extinction coefficients of triplet - triplet transitions in aromatic compounds, R. A. Keller

and S. G. Hadley. J. Chem. Phys. 42, No. 7, 2382 (Apr. 1965).

67 54. Fermi resonance in condensed CF4 and CC1 4 , S. Abramowitz and J. J. Comeford. Spectrochim. Acta 21, 1479-1486 (1965). 6755. Field desorption of thorium from a field- evaporated tungsten surface, R. D. Young. J. Appl. Phys. 36, No. 9, 2656-2657 (Sept. 1965).

6756. Field strength calibration techniques at

the NBS, H. E. Taggart. IEEE Trans. Electromag. Compatability EC-7, No. 2, 163-169 (June 1965).

6757. Fire endurance of small gypsum slabs,

J. V. Ryan. (Proc. Am. Soc. Testing Materials

Annual Meeting on Moisture Influence on Material Behavior During Fire Test, Chicago, 111., June

1964), Am. Soc. Testing Mater. Spec. Tech. Publ.

385, 96-111 (May 1965)

.

6758. Flexural behavior of prestressed split-beam

composite concrete sections, J. 0. Bryson, L. F. Skoda, and D. Watstein. J. Prestressed Concrete

Inst. 10, No. 3, 77-91 (June 1965).

6759. Focused-beam electron bombardment evaporator,

D. H. Blackburn and W. Haller. Rev. Sci. Inst.

36, No. 7, 901-903 (July 1965).

6760. Force fields for the boron trihalides, I. W. Levin and S. Abramowitz. J. Chem. Phys. 43, No.

12, 4213-4222 (Dec. 15, 1965).

6761. Formation of NF and NF 2 by photolysis, D. E. Mann and J. J. Comeford. Spectrochim. Acta 21, 197-198 (1965). 6762. 4fnl configurations of doubly ionized cerium

(Ce III), N. Spector. J. Opt. Soc. Am. 55, No. 5 492-501 (May 1965)

.

6763. Four methods of determining temperature setir sitivity of strain gages at elevated temperatures

C. H. Melton and R. L. Bloss. ISA J. 12, No. 10, 69-74 (Oct. 1965).

6764. Fracture processes in polymeric solids,

I. Wolock and S. B. Newman. Book, Fracture Processes in Polymeric Solids. Phenomena and

Theory, Ed. B. Rosen, Chapt. IIC, pp. 235-290

(Interscience Publ. Inc., New York, N. Y. , Jan. 1965)

.

6765. Fracture topography of brittle polymers,

S. B. Newman. Polymer Engr. Sci. 5, No. 3, 159-

165 (July 1965)

.

6766. Frequency-dependent transport coefficients

in fluid mechanics, R. Zwanzig. J. Chem. Phys.

43, No. 2, 714-720 (July 15, 1965).

6767. Xo selection rules in SU(12)pp annihilation,

H. Harari, H. J. Lipkin, and S. Meshkov. Phys.

Rev. Letters 20, No. 14, 845-847 (May 1965).

6768. Gas chromatographic determination of the moisture content of grain, E. L. Weise, R. W. Burke, and J. K. Taylor. (Proc. 1963 Intern.

Symp. Humidity and Moisture, Washington, D. C),

Book, Humidity and Moisture. Vol. 4. Principles

and Methods of Measuring Moisture in Liquids and 383
1965

Solids, Sec. I, Paper 1, pp. 3-6 (Reinhold Publ. Corp., New York, N. Y. , 1965).

6769. Gas mixtures and pressures for optimum output power of RF excited helium-neon gas lasers

at 632.8 nm, K. D. Mielenz and K. F. Nefflen.

Appl. Opt. Letter 4, 565 (May 1965).

6770. Gas-phase photolysis of cyclohexane in the

far ultraviolet : modes of decomposition of the neutral excited cyclohexane molecular and re- actions of the parent cyclohexane ion, R. D. Doepker and P. Ausloos. J. Chem. Phys. 42, No.

11, 3746 (June 1, 1965).

6771. Gearing errors as related to alignment tech- niques of the rotary-vane attenuator, W. Larson. 19th Annual IEEE Conference and Exhibit on In- strumentation and Measurements, New York, N. Y.

,

Oct. 12-15, 1964, Preprint No. 12-5-2-64 (Sept. 1965); IEEE Instr. Meas. IM-14, No. 3, 117-123

(Sept. 1965).

6772. General report on fundamental spectroscopic

data, C. E. Moore. (Proc. Intern. Astronomical

Union Commission 14 Meeting, Hamburg, Germany,

Aug. 1964), Trans. Intern. Astron. Union XIIA, 156 (July 1965)

.

6773. Generalized functions of symmetric matrices,

M. Marcus and M. Newman. Proc. Am. Math. Soc.

16, No. 4, 826-830 (Aug. 1965).

6774. Generalized master equation for arbitrary

initial states, J. Weinstock. Phys. Rev. 140,

No. 1A, A98-A99 (Oct. 4, 1965).

6775. Growth layers on ammonium dihydrogen

phosphate, J. L. Torgesen and R. W. Jackson. Science 148, No. 3672, 952-954 (May 14, 1965).

6776. H 2 -transfer reactions in the gas-phase

radiolysis of hydrocarbons, P. Ausloos and

S. G. Lias. J. Chem. Phys. 43, No. 1, 127- 135 (July 1, 1965).

6777. High-frequency elastic moduli of simple

fluids, R. Zwanzig and R. D. Mountain. J. Chem. Phys. 43, No. 12, 4464-4471 (Dec. 15, 1965).

6778. High-precision coulometric titrations with

special reference to the determination of

uranium, J. K. Taylor and G. Marinenko. (Proc. Conf. High-Precision Analysis of Substances of Interest to Nuclear Energy, Jan. 18-22, 1965), Euratom, Bureau Central de Mesures Nuclaires,

pp. 147-161 (Brussels, Belgium, 1965).

6779. High pressure single crystal studies of ice

VI, S. Block, C. E. Weir, and G. J. Piermarini. Science 148, 947 (1965). 6780. High silica glass, quartz, and vitreous

silica, J. S. Laufer. J. Opt. Soc. Am. 55, No. 4, 458-460 (Apr. 1965).

6781. High temperature microwave spectroscopy:

Alf and A1C1, D. R. Lide. J. Chem. Phys. 42, No. 3, 1013-1018 (Feb. 1965).

6782. High temperature seal of sapphire windows

to ceramics, G. A. Hornbeck. Rev. Sci. Instr.

36, No. 6, 845 (June 1965).

6783. Higher-order skewnesses in a turbulent

field, F. N. Frenkiel and P. S. Klebanoff.

Compt. Rend. 260, 6026-6029 (1965).

6784. Historical background of image formation,

L. L. Marton. Lab. Invest. 14, Pt. 1, No. 6, 739 (1965).

6785. Hydrogen atom addition to olefins: relative

rates at the two carbon positions and derived

heats of formation of several alkyl radicals,

R. D. Kelley, R. Klein, and M. D. Scheer. J. Phys. Chem. 69, No. 3, 905-908 (Mar. 1965).

6786. Hyperfine structure of Hg 1 93 *, Hg19S and Hg 195*by Zeeman level crossings, W. W. Smith. Phys. Rev. 137, No. 2A, A330-A339 (Jan. 18, 1965)

.

6787. Identification of energy levels of negative ions, U. Fano and J. W. Cooper. Phys. Rev.

138, No. 2A, A400-402 (Apr. 19, 1965).

6788. Impact of new technology on the forest in- dustries, R. W. Smith, Jr. Proc. 2nd Annual Forest Industries Marketing Conference, June

16-17, 1965, pp. 119-130 (University of Oregon

Press, Eugene, Oregon, June 16, 1965).

6789. Impedance of sealed nickel-cadmium dry

cells, R. J. Brodd and H. J. DeWane. J. Electrochem. Technol. 3, No. 1-2, 12-17 (Jan.-

Feb. 1965).

6790. Importance of surface films, J. C. Richmond.

(Symp. Thermal Radiation of Solids, San Francisco, Calif., Mar. 4-5, 1964), NASA Spec. Publ. SP-55, Session II, Paper 15, pp. 157-158

(1965)

.

6791. Improved measurement of the electric dipole moment of the hydroxyl radical, F. X. Powell and

D. R. Lide. J. Chem. Phys. 42, No. 12, 4201-4202

(June 1965)

.

6792. Impurity controlled properties of ionic solids

A. D Franklin. (Proc. Symp. Physics and Chemistry of Ceramics, Pennsylvania State Univ., University Park, Pa., May 28-30, 1963), Book, Physics and Chemistry of Ceramics, pp. 77-109

(Gordon and Breach, New York, N. Y. , 1963).

6793. Inelastic scattering of electrons by helium,

G. E. Chamberlain and H. G. M. Heideman. Phys.

Rev. Letters 15, No. 8, 337-338 (Aug. 1965).

6794. Inequalities for permanents and permanental

minors, R. A. Brualdi and M. Newman. Proc. Cambridge Phil. Soc. 61, Pt. 3, 741-746 (Jan. 26, 1965)

.

6795. Influence or irregular terrain on propagation,

J. W. Herbstreit. (Proc. XIV General Assembly of

URSI, Tokyo, Japan, 1963), Book, Progress in Radio Science 1960-1963. Vol. II. Radio and Troposphere

Ed. F. du Castel, pp. 141-156 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1965).

6796. Influence of paramagnetic resonance on the static susceptibility, G. A. Candela. Spinlattice relaxation time of cupric sulfate pentahydrate, J. Chem. Phys. 42, No. 1, 113-117 (Jan.

1, 1965).

6797. Influence' of spin paramagnetism on superconductivity, R. A. Kamper, R. S. Collier, and

Y. Ohori. Phys. Rev. 137, No. 1A, A75-A77

(Jan. 1965).

6798. Influence or irregular terrain on propagation, J. W. Herbstreit. (Proc. XIV General Assembly of URSI, Tokyo, Japan, 1963), Book, Progress in Radio Science 1960-1963. Vol. II. Radio and Troposphere, Ed. F. du Castel, pp. 141-156 (Elsevier Publ. Co., Amsterdam, . The Netherlands, 1965).

6799. Infrared and microwave spectra of CICN,

W. J. Lafferty, D. R. Lide, and R. A. Toth.

J. Chem. Phys. 43, No. 6, 2063-2070 (Sept. 15, 1965)

.

6800. Infrared emission spectrum of HBr excited

in an electric discharge. Determination of molecular constants, T. C. James and R. J. Thibault. J. Chem. Phys. 42, No. 4, 1450-14 57 (Feb. 1965).

384
1965

6801. Infrared measurements on allene and allened-i, A. G. Maki and R. A. Toth. J. Mol. Spectr.

17, No. 1, 136-155 (July 1, 1965).

6802. Infrared spectrum of the free radical NCN,

D. E. Milligan, M. E. Jacox, J. J. Comeford,

and D. E. Mann. J. Chem. Phys. 43, No. 2, 756-757 (July 15, 1965)

.

6803. Infrasonic observations of the May 16, 1964, volcanic explosion on the island of Bali,

V. H. Goerke, J. M. Young, and R. K. Cook. J. Geophys. Res. 70, No. 24, 6017-6022 (Dec. 15, 1965).

6804. Initiation of spherulite growth: The case

of con-current homogeneous and heterogeneous

nucleation, F. Gornick. J. Appl. Phys. 36, No. 10, 3012-3014 (Oct. 1965).

6805. Interaction between configurations with

several open shells, U. Fano. Phys. Rev. 140,

No. 1A, A67-A75 (Oct. 4, 1965).

6806. Interaction of oxygen with platinum, A. J. Melmed. J. Appl. Phys. 36, No. 11. 3691-3692

(Nov. 1965).

6807. Interaction of 3 50-keV polarized neutrons with oriented 16

s

Ho nuclei, R. Wagner, P. D. Miller, T. Tamura, and H. Marshak. Phys. Rev.

139, No. IB, B29-B46 (July 12, 1965).

6808. Interaction potential between He and H2,

M. Krauss and F. H. Mies. J. Chem. Phys. 42,

No. 8, 2703-2708 (Apr. 15, 1965).

6809. Interference patterns in reverberent sound

fields, II, R. V. Waterhouse and R. K. Cook.

J. Acoust. Soc. Am. 37 No. 3, 424-428 (Mar. 1965)

.

6810. International comparison of atomic frequency

standards via VLF radio signals, A. H. Morgan,

B. E. Blair, and E. L. Crow. Book, Progress in Radio Science 1960-1963. Vol. I. Radio Standards

and Measurements, pp. 40 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1965).

6811. International weights and measures, C. H. Page. (ISA 20th Annual Conference and Exhibit,

Los Angeles, Calif., Oct. 4-7, 1965), ISA Preprint 33.3-1-65 (1965). 6812. Interpretation of Ar

+ -Ar collisions at 50 keV, U. Fano and W. Lichten. Phys. Rev. Letters

14, No. 16. 627-629 (Apr. 1965). 6813. Investigation of the anomaly in the response of silicon semiconductor radiation

detectors at low temperatures, W. R Dodge,

S. R. Domen, A. T. Hirshfeld, and D. D. Hoppes.

IEEE Trans. Nuclear Sci. NS-12, No. 1, 295-303

(Feb. 1965).

6814. Ionization energies of the singly ionized

rare earths, J. Sugar and J. Reader. J. Opt.

Soc. Am. 55, No. 10, 1286-1290 (Oct. 1965).

6815. Ionospheric effects observed around the time of the alaskan earthquake of March 28, 1964,

K. Davies and D. M. Baker. J. Geophys. Res. 70, No. 9, 2251-2253 (May 1, 1965).

6816. Ionospheric propagation at high frequencies,

K. Davies. 4UITU Calling 2, 112-113 (1965). 6817. Isotopic determination of the vibrational numbering for the B

3 0+u, R. L. Brown and T. C. James. J. Chem. Phys. 42, No. 1, 33-38 (Jan. 1965).

6818. Isotopic effects in the v 3 fundamental of matrix-isolated BCI3, J. J. Comeford, S. Abramowitz, and I. W. Levin. J. Chem. Phys. 43, No.

12, 4536-4537 (Dec. 15, 1965).

6819. Isotopic fractionation of uranium related to roll features in Sandstone, Power River Basin,

Wyoming and Colorado Plateau, J. N. Rosholt,

A. P. Butler, E. L. Garner, and W. R. Shields.

Econ. Geology 60, No. 2, 199-213 (Mar. -Apr. 1965).

6820. Isotopic mixing in CO chemisor-bed on

tungsten, T. E. Madey, J. T. Yates, Jr., and

R. C. Stern. J. Chem. Phys. 42, No. 4, 1372-

1378 (Feb. 1965).

6821. Isotopic mixing in nitrogen chemisorbed on

W, J. T. Yates, Jr. and T. E. Madey. J. Chem. Phys. 43, No. 3, 1055-1059 (Aug. 1, 1965).

6822. Justification for neglecting the compressibility of the ionosphere in VLF radio propagation, J. R. Wait. IEEE Trans. Ant. Prop. AP-13, 480-481 (May 1965).

6823. Laboratory measurement of the rate of the reaction N 2 +0 NO+N at thermal energy, E. E. Ferguson, F. C. Fehsenfeld, P. D. Goldan, A. L. Schmeltekopf , and H. I. Schiff. Planet. Space

Sci. 13, 823-827 (1965). 6824. Laboratory measurement of the rate of the reaction 0 +02^02 +0 at thermal energy, F. C. Fehsenfeld, P. D. Goldan, A. L. Schmeltekopf,

and E. E. Ferguson. Planet Space Sci. 13, 579-

582 (Mar. 1965).

6825. Laser double-quantum photodetachment of I , J. L. Hall, E. J. Robinson, and L. M. Branscomb.

Phys. Rev. Letters 14, No. 25, 1013-1016 (June

21, 1965).

6826. Latensif ication in radiographic emulsions,

W. L. McLaughlin. J. Phot. Sci. 13, 1-11 (1965).

6827. Letter to the Editor, C. H. Page. Metrologia

1, No. 2, 73-74 (Apr. 1965).

6828. Letter to the Editor "Physical significance

of the Fulcher equation," A. B. Bestul. Phys.

Chem. Glasses 6, No. 3, 108-110 (June 1965).

6829. Lightning characteristics as derived from

sferics, W. L. Taylor. (Proc. 3rd Intern. Conf. Atmospheric and Space Electricity, Montreus, Switzerland, May 1963), Book, Problems of Atmospheric and Space Electricity, Ed. S. C. Coroniti,

pp. 388-404 (Elsevier Publ. Corp., Amsterdam, The Netherlands, 1965).

6830. Limits on calorimetric residual entropies of glasses, A. B. Bestul and S. S. Chang. J. Chem.

Phys. 43, No. 12, 4532-4533 (Dec. 15, 1965).

6831. Line profiles in the far ultraviolet absorption spectra of the rare gases, U. Fano and

J. W. Cooper. Phys. Rev. 137, No. 5A, A1364- A1379 (Mar. 1965).

6831A. Linear tuning of a microwave cavity, M. J. Vetter. IEEE Trans. Microwave Theor. Tech. MTT-13, No. 6, 880 (Nov. 1965).

6832. Localized-induction concept on a curved

vortex and motion of an elliptic vortex ring,

R. J. Arms and F. R. Hama. Phys. Fluids 8, No. 4, 553-559 (Apr. 1965).

6833. Long-period very low frequency emission pulsations, W. B. Carson, J. A. Koch, J. H. Pope and

R. M. Gallet. J. Geophys. Res. 70. No. 17, 4293-

4303 (Sept. 1, 1965).

6834. Longitude distribution of proton flares, C.

S. Warwick. J. Astrophys. 141, No. 2, 500-504

(Feb. 15, 1965).

6834A. Longitudinal magnetoresistance of copper,

R. L. Powell. Low Temp. Phys. LT-9, Pt. B., 732-735 (1965).

683 5. Loop prominences and coronal condensations.

I. Non-thermal velocities within loop prominences, J. T. Jefferies and F. Q. Orrall. Astrophys. J. 141, No. 2, 505-518 (Feb. 15, 1965)

.

385
1965

6836. Loop prominences and coronal condensations.

II. The source of mass and energy and a model

of the loop prominence mechanism, J. T. Jeffries and F. Q. Orrall. Astrophys. J. 141, No. 2, 519-525 (Feb. 15, 1965).

6837. Low atomic number dye systems for ionizing radiation measurement, W. L. McLaughlin and

L. Chalkley. J. Photo. Sci. Eng. 9, No. 3, 159-

166 (May-June 1965).

6837A. LF-VLF frequency and time services of NBS,

D. H. Andrews. IEEE Trans. Instr. Meas. IM-14,

No. 4, 233-237 (Dec. 1965).

6838. Low temperature magnetic transitions in some rare-earth trichlorides, J. C. Eisenstein, R. P. Hudson, and B. W. Mangum. Phys. Rev. 137, No.

6A, A1886-A1895 (Mar. 1965).

6839. Low-Z dye stems for ionizing radiation measurement, W. L. McLaughlin and L. Chalkley. J. Photo. Sci. Engr. 9, No. 3, 159-166 (May- June

1965) . 6840. MAGIC—A machine for automatic graphics

interface to a computer, D. E. Rippy and D. C. Humphries. Proc. Fall Joint Computer Conf.,

Nov. 20-Dec. 2, 1965, Las Vegas, Nevada, pp. 819-830 (Spartan Books, Inc., Wash., D. C. 1965).

6841. Maintenance of marine electronics equipment

by personnel not trained in electronic maintenance, G. Shapiro and G. J. Rogers. Proc. Annual Tankers Conf. Am. Petroleum Inst., pp. A1-A48

(June 1965)

.

6842. Major revisions made in new dry cell standard,

W. J. Hamer. Mag. Std. 36, No. 10, 306-308

(Oct. 1965).

6843. Mass spectrometric study of photoionization.

III. Methane and methane-d4 , V. H. Dibeler,

M. Krauss, R. M. Reese, and F. N. Harllee. J. Chem. Phys. 42, No. 11, 3791-3796 (June 1965).

6844. Mass spectrometric study of the reaction of nitrogen atoms with ethylene, J. T. Herron. J. Phys. Chem. 69, No. 8, 2736-2740 (Aug. 1965).

6845. Mass spectrophotometric study of photoionization. II. H 2 , HD, and D, , V. H. Dibeler, R. M. Reese and M. Krauss. J. Chem. Phys. 42, No. 6, 2045-2048 (Mar. 15, 1965).

6846. Mass spectrum of yttrium chloride vapor,

J. D. McKinley. J. Chem. Phys. 42, No. 6, 2245-2246 (Mar. 15, 1965).

6847. Master equations and Markov processes,

I. Oppenheim and K. E. Shuler. Phys. Rev. 138,

No. 4B, B1007-B1011 (May 1965).

6848. Matrix-isolation infrared spectrum of the free radical CCO, M. E. Jacox, D. E. Milligan,

N. G. Moll, and W. E. Thompson. J. Chem. Phys.

43, No. 10, 3734-3746 (Nov. 1965).

6849. Matrix-isolation infrared spectrum of the free radical NH 2> D. E. Milligan and M. E. Jacox.

J. Chem. Phys. 43, No. 12, 4487-4493 (Dec. 15, 1965)

.

6850. Matrix isolation study of the photolysis of cyanogen azide. The infrared and ultraviolet

spectra of the free radical NCN, D. E. Milligan,

M. E. Jacox, and A. Bass. J. Chem. Phys. 43, No. 9, 3149-3160 (Nov. 1, 1965).

6851. Matrix isolation study of the reaction of

CI atoms with CO. The infrared spectrum of the free radical C1C0, M. E. Jacox and D. E. Milligan. J. Chem. Phys. 43, No. 3, 866-870 (Aug.

1, 1965).

6852. Matrix-isolation study of the reaction of F atoms with CO. Infrared and ultraviolet spectrum of the free radical FCO, D. E. Milligan,

M. E. Jacox, A. M. Bass, J. J. Comeford, and

D. E. Mann. J. Chem. Phys. 42, No. 9, 3187-3195

(May 1965).

6853. Measurement and standardization of LF to UHF electrical quantities. Sketch of recent worldwide developments, M. C. Selby. Book, Progress in Radio Science 1960-1963. Vol. I. Radio Standards

and Measurements, pp. 45-55 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1965).

6854. Measurement of radiation dose distributions with photochromic materials, W. L. McLaughlin

and L. Chalkley. Radiology 84, No. 1, 124-125

(Jan. 1965).

6855. Measurement~R & D looks to future, W. A. Wildhack. Control Eng. 12, No. 1, 75-76 (Jan. 1965)

.

6856. Measurement standards, A. G. McNish. Intern.

Sci. Tech. 58-66 (Conover-Mast . Publ., New York,

N. Y., Nov. 1965).

6857. Measurements of the viscosity of parahydrogen, D E. Diller. J. Chem. Phys. 42, No. 6, 2089-2100 (Mar. 1965).

6858. Measuring impedance through an adapter without introducing additional error, R. W. Beatty.

Proc. IEEE 53, No. 6, 656-657 (June 1965).

6859. Measuring the cooling load of refrigerated

vehicles by free evaporation of liquid nitrogen,

P. R. Achenbach, C. W. Phillips, and R. W. Penney. Suppl. Bull. Intern. Inst. Refrigeration, Commission VII, 3, 115-124 (1965). 6860. Mechanical translation: U.S. --Japan Joint Conference, F. L. Alt. Science 147, No. 3665, 1599-1600 (Mar. 1965).

6861. Meson and baryon resonances in relativist ic SU(6), H. Harari, D. Horn, M. Kugler, H. J. Lipkin, and S. Meshkov. Phys. Rev. 140, No. 2B, B431-B433 (Oct. 25, 1965).

6862. Metallized polymer film guard rings, A. H. Scott. Mater. Res. Std. 5, No. 2, 76-78 (Feb. 1965)

.

6863. Method and equipment for measuring thermal emittance of ceramic oxides from 1200° to 1800°,

H. E. Clark and D. G. Moore. (Symp. Thermal Radiation of Solids, San Francisco, Calif., Mar. 4-5, 1964), NASA Spec. Publ. SP-55, Session III, Paper 26, pp. 241-257 (1965).

6864. Method of adjusting force constants and its application to H 2 0, H 2 C0, CH2 C1, and their deuterated molecules, T. Shimanouchi and I. Suzuki. J. Chem. Phys. 42, No. 1, 296-308 (Jan.

I, 1965).

6865. Method of obtaining a range of current densities with a resistive cathode, M. Brenner

and A. Brenner. Plating 56, No. 6, 527-530

(June 1965)

.

6866. Microscopic fluctuations and diffusion co- efficients of a non-equilibrium plasma in a magnetic field, J. Weinstock. Phys. Fluids 8, No. 3, 479-481 (Mar. 1965).

6867. Microwave and high frequency calibration

services of the National Bureau of Standards

(Part IV), R. E . Larson. IEEE Trans. Microwave Theory Tech. MTT-13, No. 1, 138-139

(Jan. 1965).

6868. Microwave discharge cavities operating at 2450 MHz, F. C. Fehsenfeld, K. M. Evenson, and

H. P. Broida. Rev. Sci. Instr. 36, 295-298

(Mar. 1965).

6869. Microwave spectrum and barrier to internal rotation in methyls ilylacetylene , W. H. Kirch3 86
1965

hoff and D. R. Lide, Jr. J. Chem. Phys. 43,

No. 7, 2203-2213 (Oct. 1, 1965).

6870. Mobilities and reaction rates of ions in helium, E. C. Beaty and P. L. Patterson. Phys.

Rev. 137, No. 2A, A346-357 (Jan. 4, 1965).

6871. Moderation in instrumentation, J. K. Taylor.

Sci. Teacher 32, No. 3, 18-19 (Mar. 1965).

6872. Modes of propagation in a bounded com- pressible plasma, J. R. Wait. Electronics

Letters 1, 193-194 (Sept. 1965).

6873. Morphological classification in the National Bureau of Standards mechanical translation system, L. F. Meyer. J. Assoc. Cryogenics 5, No. 3, 121-128 (June 1965)

.

6874. Mortality patterns in eight strains of flour

beetles, D. B. Mertz, T. Park, and W. J. Youden. Biometrics 21, No. 1, 99-144 (Mar. 1965).

6875. Multichannel resonances in the forward scattering of electrons by helium, G. E. Chamberlain. Phys. Rev. Letters 14, No. 15, 581-582

(Apr. 12, 1965).

6876. Multiple-band conduction in n-type rutile

(Ti0 2 ), J. H. Becker and W. R. Hosier. Phys.

Rev. 137, No. 6A, A1872-A1877 (Mar. 15, 1965).

6877. Multipole matrix elements of the translation

operator, M. Danos and L. C. Maximon. J. Math. Phys. 6, 766 (1965).

6878. Multivibrator provides bidirectional output

pulses, F. C. Ruegg. Electronics 38, No. 17, 87 (Aug. 8, 1965).

6879. National Bureau of Standards gas thermometer.

III. Constant volume valve, R. L. Anderson and

L. A. Guildner. Rev. Sci. Instr. 36, No. 5, 615-616 (May 1965)

.

6880. Natural variation of copper isotopes and

the atomic weight of copper, W. R. Shields,

S. S. Goldich, E. L. Garner, and T. J. Murphy.

J. Geophys. Res. 70, No. 2, 479-491 (Jan. 1965).

6881. Nature of the electromagnetic field reflected

from a coastline, J. R. Wait. Electronics Letters

1, 65 (May 1965)

.

6882. Negative surface ionization of complex molecules, J. T. Herron, H. M. Rosenstock, and W. R. Shields. Nature, 206, No. 4984, 611 (May 1965).

6883. New approach to the theory of fluctuations

in a plasma, J. Weinstock. Phys. Rev. 139, No.

2A. A388-A393 (July 19, 1965).

6884. New developments in dental materials a worldwide survey, G. C. Paf f enbarger . Intern. Dental

J. 15, No. 3, 311-422 (Sept. 1965).

6885. New mode of operation of a phase sensitive

detector, Y. Beers. Rev. Sci. Instr. 36, No. 5, 696-700 (May 1965)

.

6886. New odd low levels of neutral erbium (Er I),

N. Spector. J. Opt. Soc. Am. 55, No. 5, 576-

577 (May 1965)

.

6887. o New Rydberg series in molecular oxygen near

500A, K. Codling and R. P. Madden. J. Chem. Phys.

42, No. 11, 3935-3938 (June 1965).

6888. Noise tests of an airborne microwave re- fractometer system, M. C. Thompson, Jr. and

W. B. Grant. Rev. Sci. Instr. 36, No. 6, 758-

759 (June 1965)

.

6889. Nomographs for computing real, imaginary and absolute values of vector ratios, H. S. Bowman.

J. Acoust. Soc. Am. 37, No. 4, 751 (Apr. 1965).

6890. Nonanalyticity of transport coefficients and

the complete density expansion of momentum cor- relation functions, J. Weinstock. Phys. Rev. 140,

No. 2a, A460-A465 (Oct. 18, 1965).

6891. Nonequilibrium chemical excitation and chemical pumping of lasers, K. E. Shuler, T. Carrington, and J. Light. Appl . Opt. Suppl . 2. Chemical

Lasers, pp. 81-104 (1965). 6892. Normal subgroups of the modular group which

are not congruence subgroups, M. Newman. Proc.

Am. Math Soc. 16, No. 4, 831-832 (Aug. 1965).

6893. Note on the theory of cavity ionization

chambers, L. V. Spencer. Radiation Res. 25, No. 2, 352-358 (June 1965).

6894. Nuclear magnetic moment of Pr 141 from the hyperfine structure of doubly ionized praseodymium, J. Reader and J. Sugar. Phys. Rev. 137,

No. 4B, B784-B789 (Feb. 1965).

6895. Nuclear magnetic moment of Pr 141 from the hyperfine structure of doubly ionized praseodymium, Erratum, J. Reader and J. Sugar. Phys.

Rev. 140, No. 7AB, AB3 (Dec. 27, 1965).

6896. Nuclear magnetic resonance in bulk nickel

samples, L. H. Bennett. Phil. Mag. 12, No. 115, 213-215 (July 1965)

.

6897. Nuclear magnetic resonance in RbMnF 3 , R. D. Payne, R. A. Forman and A. H. Kahn. J. Chem.

Phys. 42, No. 11, 3806-3808 (June 1965).

6898. Nuclear resonance spin-echo study of Eu 153 in

EuO, G. A. Uriano and R. L. Streever. Physics

Letters 17, No. 3, 205-206 (July 15, 1965).

6899. Nuclear resonance study of gallium-substituted

yttrium iron garnet, R. L. Streever and G. A. Uriano. Phys. Rev. 139, No. 1A, A305-A313 (July

5, 1965) . 6900 to 8899. Unassigned.

8900. Nuclear resonance study of hyperfine fields

in nickel-rich nickel-cobalt alloys, R. L. Streever and G. A. Uriano. Phys. Rev. 139, No.

1A, A135-A141 (July 5, 1965).

8901. Nuclear size determination by neutral-pion

photoproduction, R. A. Schrack. Phys. Rev. 140,

No. AB, B897-B904 (Nov. 22, 1965). 8902. Nucleate and film pool boiling design cor- relations for 02 , N 2 and He, E. G. Brentari and

R . v. Smith. (Proc. 1964 Cryogenic Engineering

Conf., Univ. Pennsylvania, Phila., Pa., Aug.

18-24, 1964), Book, Advances in Cryogenic Engineering 10, Paper T-l , 325-341 (Plenum Press

Inc., New York, N. Y., 1965).

8903. Nucleate boiling of hydrogen, D. E. Drayer.

Ind. Eng. Chem. Fundamentals 4, No. 2, 167-171

(May 1965)

.

8904. Observations of dislocation sources in stainless steel, A. W. Ruff, Jr. and H. G. F. Wilsdorf. Acta Met. 13, No. 6, 694-695 (1965). 8905. Observation of the products of ionic col- lision processes and ion decomposition in a linear, pulsed time-of-f light mass spectrometer,

R. E. Ferguson, K. E. McCulloh, and H. M. Rosenstock. J. Chem. Phys. 42, No. 1, 100-106 (Jan.

1, 1965). 8906. Of time and the atom, G. E. Hudson. Phys. Today 18, No. 8, 34-38 (Aug. 1965).

8907. On a theorem concerning existence of inter- polating functions, R. F. DeMar. Trans. Am. Math. Soc. 114, No. 1, 23-29 (Jan. 1965). 8908. On radiation of electromagnetic and electroacoustic waves in a plasma, J. R. Wait. Appl.

Sci. Res. 11, Sec. B., 423-432 (June 11, 1965).

8909. On radiation of electromagnetic and electroacoustic waves in plasma. Part II, J. R. Wait. Appl. Sci. Res. 12, Sect. B., 130-138 (1965).

387
1965

8910. On the asymptotic solutions of second-order

differential equations having an irregular singularity of rank one, with an application to Whittaker functions, F. W. J. Oliver.. J. SIAM,

Ser. B. 2, No. 2, 225-243 (1965). 8911. On the behavior of the compressibility along

the critical isotherm, S. Y. Larsen and J. M. H. Levelt-Sengers . Book, Advances in Thermophysical

Properties at Extreme Temperatures and Pressures,

pp. 74-75 (American Society of Mechanical Engineers, New York, N. Y. , Mar. 1965).

8912. On the continuity equation for electron

density in the ionosphere, T. Shimazaki. J. Atmospheric Terrest. Phys . 27, 593-604 (1965). 8913. On the determination of the electron density within discrete auroral forms in the E region,

R. D. Hunsucker. J. Geophys . Res. 70, No. 15, 3791-3792 (Aug. 1, 1965).

8914. On the identification of energy levels of negative ions, U. Fano and J. W. Cooper. Phys.

Rev. 138, No. 2A, A400-A402 (Apr. 1965). 8915. On the information in a microphotograph

,

C. S. McCamy. Appl. Opt. 4, No. 4, 405-411

(Apr. 1965). 8916. On the limiting shape of the distribution

function of lengths of a single polymer molecule

with excluded-volume effects, J. Mazur. J. Chem.

Phys. 43, No. 12, 4354-4356 (Dec. 15, 1965). 8917. On the nature of plasma resonance, W. M. Leavens. Physics Letters 15, No. 4, 310-311

(Apr. 1965).

8918. On the optimum frequency deviation in an FM system over a scatter-propagation path,

H. Akima. Proc. IEEE 53, No. 2, 182-183 (Feb. 1965)

.

8919. On the relation between auroral radio ab- sorption and very low frequency emissions,

W. L. Ecklund, J. K. Hargreaves, and J. H. Pope. J. Geophys. Res. 70, No. 17, 4285-4292

(Sept. 1, 1965).

8920. On the relative roles of free volume and activation energy in the viscosity liquids,

P. B. Macedo and T. A. Litovitz. J. Chem. Phys.

42, No. 1, 245-256 (Jan. 1, 1965). 8921. On the use of thermopiles for absolute radio- metry in the far ultraviolet, R. G. Johnston and

R. P. Madden. Appl. Opt. 4, No. 12, 1574-1580

(Dec. 1965). 8921A. On the use of VLF measurements for obtaining

information on the lower ionosphere (especially during solar flares), D. D. Crombie. Proc. IEEE

53, 2027-2034 (Dec. 1965). 8922. On the validity of the Lorentz-Lorenz

equation near the critical point, S. Y. Larsen,

R. D. Mountain, and R. Zwanzig. J. Chem. Phys.

42, No. 6, 2187-2190 (Mar. 15, 1965).

8923. Optical constants of iron in the visible

region, H. T. Yolken and J. Kruger. J. Opt. Soc.

Am. 55, No. 7, 843-844 (June 1965).

8924. Optical instrumentation for the biologist: microscopy, J. R. Meyer-Arendt . Appl. Opt. 4, No. 1, 1-9 (Jan. 1965).

8925. Optical properties of beryllium in the ultraviolet from electron energy absorption,

R. E. LaVilla and H. Mendlowitz. Appl. Opt.

4, No. 8, 955-960 (Aug. 1965).

8926. Optical quenching of photoconductivity near

the band edge in CdS, L. Grabner. Phys. Rev. Letters 14, No. 14, 551-554 (Apr. 5, 1965).

8927. Optical radar using a corner reflector on

the moon, C. O. Alley, P. L. Bender, R. H. Dicke,

J. E. Faller, H. H. Plotkin, and D. T. Wilkinson. J. Geophys. Res. 70, No. 9, 2267-2269

(May 1, 1965). 8928 Oscillator strengths for lines of Fe I be- tween 2500 and 3200A\ R. B. King, C. H. Corliss,

and K. H. Olsen. Astrophys. J. 141, No. 2, 354-363 (Feb. 1965). 8929. Osmotic and activity coefficients of tris (hydroxymethyl) aminomethane and its hydro- chloride in aqueous solution at 25 C, R. A. Robinson and V. E. Bower. J. Chem. Engr. Data

10, No. 3, 246-247 (1965). 8930. Our measurement system and its future, R. D. Huntoon. Research/Develop. 16, No. 1, 16-21

(Jan. 1965).

8931. Oxidation of asphalt flux with oxides of nitrogen, P. G. Campbell and J. R. Wright.

Am. Chem. Soc. Div. Petroleum Chem. Preprint

10, No. 1, 79-89 (Mar. 1965); Ind. Eng. Chem. Product Res. Develop. 4, No. 2, 121-128 (June 1965)

.

8932. Oxygen metastable atom production through photodetachment , L. M. Branscomb, S. J. Smith, and G. C. Tisone. J. Chem. Phys. 43, No. 8, 2906-2907 (Oct. 15, 1965). 8933. Paths, trees, and flowers, J. Edmonds. Can.

J. Math. 17, 449-467 (May 1965).

8934. Patterns of thinking in searching patent ap- plications by manual and machine-assisted methods,

J. R. Cornog and P. P. Ellis. J. Chem. Doc. 5, 215-225 (Nov. 1965).

8935. Phase equilibria in the system aluminum oxide-tungsten oxide, J. L. Waring. J. Am. Ceram.

Soc. 48, No. 9, 493-494 (Sept. 1965).

8936. Philosophical influences on radiation protection standards, L. S. Taylor. Health Phys. 11, 859-864 (1965)

.

8937. Unassigned.

8938. Unassigned.

8939. Phonon induced nuclear dipole transitions,

R. J. Mahler. (Proc. XHIth Colloque and Re- laxation in Solids), Book, Nuclear Magnetic Resonance and Relaxation in Solids, Ed. L. V. Gervin, pp. 202-209 (North Holland Publ. Co., Amsterdam, The Netherlands, 1965).

8940. Photolysis of cyclobutane at photon energies below and above the ionization energy, R. D. Doepker and P. Ausloos. J. Chem. Phys. 43, No.

11, 3814-3819 (Dec. 1, 1965).

8940A. Photolysis of ethane at the argon resonance

lines 1067 and 1048a", A. H. Laufer and J. R. McNesby. J. Chem. Phys. 42, No. 9, 3329-3330

(May 1, 1965)

.

8941. Photonuclear reactions, E. Hayward. Book, Nuclear Structure and Electromagnetic Transitions, Ed. N. MacDonald, pp. 141 (Oliver and

Boyd, Edinburgh and London, England, 1965).

8942. Physical and mechanical properties of elec- trodeposited copper. 1. Literature survey,

V. A. Lamb and D. R. Valentine. Plating 52, No. 12, 1289-1311 (Dec. 1965). 8943. Planning for better measurement accuracy,

R. D. Huntoon and W. A. Wildhack. ISA J. 12, No. 1, 57-60 (Jan. 1965). 8944. Plans for proposed new tables of the thermo- dynamic properties of moist air, J. C. Davis,

T. K. Faison, and P. R. Achenbach. (Proc. 1963

Intern. Symp. Humidity and Moisture, Washington,

D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol.

3. Fundamentals and Standards, Chapt. 11, pp. 388
1965 315-320 (Reinhold Publ. Corp., New York, N. Y.

,

1965).

8945. Polaron coupling constants in SrTi03 , D. M. Eagles. J. Phys. Chem. Solids 26, No. 3, 672

(Mar. 1965).

8946. Polymorphism in hydrogen iodide, F. A. Mauer,

C. J. Keffer, R. B. Reeves, and D. W. Robinson.

J. Chem. Phys. 42, No. 4, 1465-1466 (Feb. 15, 1965)

.

8947. Positive ion-neutral reactions in the ionosphere, E. E. Ferguson, F. C. Dehsenfeld, P. D. Goldan, and A. L. Schmeltekopf . J. Geophys.

Res. 70, No. 17, 4324-4329 (Sept. 1, 1965).

8948. Possible implications of the observed profile of (\6374) Fe X, C. Pecker-Wimel and

R. N. Thomas. As trophys. J. 141, No. 2, 834-

836 (Feb. 15, 1965).

8949. Potential-energy curves for CO and CO , P. H. Krupenie and S. Weissman. J. Chem. Phys.

43, No. 5, 1529-1534 (Sept. 1, 1965).

8950. Potential use of passive probing of at- mospheric structure by thermal emissions at radio frequencies, B. R. Bean, E. R. Westwater,

and R. L. Abbott. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control

in Science and Industry. Vol. 2. Applications,

Sec. VII, Paper 71, pp. 595-608 (Reinhold Publ. Corp., New York, N. Y. , 1965).

8951. Precise assay of copper using small samples,

T. J. Murphy and J. K. Taylor. Anal. Chem. 37, No. 7, 929-931 (June 1965). 8952. Precise voltage-ratio measurement, T. L. Zapf. Electro-Technol. 76, No. 4, 95-102 (Oct. 1965)

.

8953. Precision ref ractometry of small lens-shaped

objects, J. R. Meyer-Arendt . Lab. Invest. 13, No. 5, 529-532 (1965). 8954. Preliminary studies directed toward deter- mination of spectral absorption coefficients of homogeneous materials in the infrared at elevated

temperatures, W. B. Fussell and R. Stair. (Symp. Measurement of Thermal Radiation of Solids, San

Francisco, Calif., Mar. 4-6, 1964), NASA Spec. Publ. SP-55, Session III, Paper 29, pp. 287-292

(1965). 8955. Preliminary studies on the characterization

of solution-grown ADP crystals, R. D. Deslattes,

J. L. Torgensen, B. Paretzkin, and A. T. Horton.

Advan. X-ray Anal. 8, 315-324 (1965). 8956. Preparation of copper crystals with low electrical resistivity, J. J. Gniewek and A. F. Clark. J. Appl. Phys. 36, No. 10, 3358-3359

(Oct. 1965).

8957. Pressure dependence of the internal field

at the S9 Co nucleus in a 99.5 percent Ni-0.5

percent Co alloy, L. H. Bennett. J. Appl. Phys.

36, No. 3, Pt. 2, 942-943 (Mar. 1965).

8958. Pressure-indicator-paste patterns in duplicate dentures made by different processing

technics for the same patient, J. B. Woelfel and

G. C. Paf fenbarger . J. Am. Dental Assoc. 70, No. 2, 339-343 (Feb. 1965).

8959. Production of alumina windows, H. Johnson

and R. D. Deslattes. Rev. Sci. Instr. 36, No. 9, 1381-1382 (Sept. 1965). 8960. Project FIST: fault isolation by semi-auto- matic techniques, G. J. Rogers. Design Dis- closure Workbook (Packaging), U.S. Naval Applied

Science Lab., Brooklyn, N. Y. , Draft No. 5 (June 1965) .

8961. Propagation of electromagnetic pulses in terrestrial waveguides, J. R. Wait. IEEE Trans.

Ant. Prop. AP-13, No. 6, 904-918 (Nov. 1965).

8962. Propagation of the ground wave electromagnetic signal, with particular reference to a pulse of nuclear origin, J. R. Johler and J. C. Morgenstern. Proc. IEEE 53, No. 12, 2043-2053

(Dec. 1965).

8963. Proper accounting of conformations of a polymer near a surface, E. A. DiMarzio. J. Chem.

Phys. 42, No. 6, 2101-2106 (Mar. 1965). 8964. Proposed standard for measuring and reporting

physical properties of optical materials, G. W. Cleek, F. J. P. Consitt, and W. D. Lawson. In- frared Phys. 5, 141-160 (Dec. 1965). 8965. Pyrolytic techniques, G. M. Brauer. J. Polymer Sci. 8, Pt. C, 3-26 (1965). 8966. Quantum statistics of fully ionized gases,

W. T. Grandy and F. Mohling. Ann. Phys. 34, No.

3, 424-464 (Oct. 1965).

8967. Quenching of the triplet state of acetone

and biacetyl by azoalkanes, R. E. Rebbert and

P. Ausloos. J. Am. Chem. Soc. 87, 1847-1852

(May 5, 1965).

8968. Quenching of the triplet state of acetone

and biacetyl by various unsaturated hydrocarbons,

R. E. Rebbert and P. Ausloos. J. Am. Chem. Soc.

87, No. 24, 5569-5572 (Dec. 20, 1965). 8969. Radiation efficiency of half-wave dipole

antennas, R. G. FitzGerrell. IEEE Trans. Ant. Prop. AP-13, No. 2, 326-327 (Mar. 1965). 8970. Radiation-induced polymerization and other reactions of n-perf luoropentadiene-1 , 4 at high temperature and pressure, D. W. Brown, J. E. Fearn, and R. E. Lowry. J. Polymer Sci. 3, Pt.

2, No. 4, 1641-1660 (Apr. 1965). 8971. Radiative corrections. I. High-energy bremsstrahlung and pair production, K. Mork and H. Olsen. Phys. Rev. 140, No. 6B, B1661-B1674

(Dec. 20, 1965).

8972. Radio astronomy observations with 8.4 x 104 m

2 50 Mc/s antenna of the Jicamarca radar

in Peru, W. K. Klemperer and G. R. Ochs. Astron.

J. 70, No. 1327, 141-142 (Mar. 1965). 8973. Radio refractometry and its potential for humidity studies, R. E. McGavin and M. J. Vetter.

(Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry.

Vol. 2. Applications, Sec. VII, Paper 66, pp. 553-560 (Reinhold Publ. Corp., New York, N. Y .

,

1965).

8974. Radio meteorology. J. W. Herbstreit. Science

147, No. 3653, 76-78 (Jan. 1, 1965).

8975. Radio standards and measurements, microwaves,

a progress review from 1960, R. W. Beatty. Book, Progress in Radio Science, 1960-1963. Vol. I. Radio Standards and Measurements, pp. 71-81 (Elsevier Publ. Co., Amsterdam, The Netherlands,

1965)

.

8976. Radiochemical methods of analysis (report on Salzburg conference), W. W. Meinke. Science 147,

No. 3654, 182-183 (Jan. 1965).

8977. Radioisotope dilution and its application

to the radioassay of Ce 144

, L. A. Currie, G. M. France, III, and H. L. Steinberg. Intern. J. Appl. Radiation Isotopes 16, No. 1, 1-8 (Jan. 1965)

.

8978. Radiolytic stress relaxation of an ethylene- propylene copolymer, H. Yu and L. A. Wall. J. Phys. Chem. 69, 2072-2078 (June 1965). 389
1965

8979. Random-walk calculations of diffusion co- efficients, R. E. Howard. Proc. 5th Intern.

Symp. Reactivity of Solids, Munich, Germany,

1964, pp. 250-255 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1965). 8980. Random-walk model of chain-polymer ad- sorption at a surface, R. J. Rubin. J. Chem. Phys. 43, No. 7, 2392-2407 (Oct. 1, 1965). 8981. Real two-dimensional representations of the modular group and related groups, J. Lehner and

M. Newman. Am. J. Math. 87, No. 4, 945-954

(Oct. 1965). 8982. Realization of semi-multipliers as multipliers, H. Fell and A. J. Goldman. Am. Math.

Mo. 72, No. 6, 639-641 (June-July 1965).

8983. Rearrangement kinetics of the liquid-liquid

immiscible microphases in alkali borosilicate

melts, W. Haller. J. Chem. Phys. 42, 686-693

(1965) . 8984. Receiver noise factor, E. Hildner. Proc.

Intern. Telemetry Conf., Washington, D. C. , May

16-20, 1964, 1, 326-333 (May 1965).

8985. Recommended materials and practices for use with cryogenic propellants, A. F. Schmidt. AIR

839, 29 pages (SAE, Inc., New York, N. Y. , Jan. 1965)

.

8986. Recrystallization of anodic alumina films,

D. J. Barber. J. Electrochem. Soc. 112, No. 11, 1143-1145 (Nov. 1965).

8987. Reference buffer solutions for pH measurements in 50 percent methanol. Dissociation con- stants of acetic acid and dihydrogen phosphate

ion from 10 to 40°, M. Paabo, R. A. Robinson, and

R. G. Bates. J. Am. Chem. Soc. 87, No. 3, 415-

418 (Feb. 1965).

8988. Relation of the stacking fault energy to segregation at stacking faults and to the occurrence of phase boundaries in F. C. C. binary alloys, R. deWit and R. E. Howard. Acta Met. 13, 655-661 (June 1965)

.

8988A. Relative signs of nuclear spin couplings in iH^B19 F 2 , E. B. Whipple, T. H. Brown, T. C. Farrar, and T. D. Coyle. J. Chem. Phys. 43, No.

5, 1841-1842 (Sept. 1, 1965).

8989. Relativistic electron precipitation into the mesosphere at subauroral latitudes, D. K. Bailey

and M. A. Pomerantz. J. Geophys . Res. 70, No.

23, 5823-5830 (Dec. 1, 1965). 8990. Remarks on a paper by T. Makino "On the cosmic-ray cut-off rigidities and the earth's magnetic field," H. H. Sauer. Report of Iono- sphere and Space Research in Japan, 19, No. 1, 54-55 (1965). 8991. Report of subcommittee D-atomic spectra,

C. E. Moore. J. Opt. Soc. Am. Tech. Notes 55, No. 6, 745 (1965). 8992. Report of the acoustics research survey committee, R. K. Cook and G. W. Wood. J. Acoust.

Soc. Am. 37, No. 2, 392-395 (Feb. 1965). 8993. Representation of diurnal and geographic

variations of ionospheric data by numerical

methods. II. Control of stability, W. B. Jones and R. M. Gallet. Telecommunications J. pp. 1-12 (Place des Nations, Geneva, Switzerland,

Jan. 1965). 8994. Research for architecture, J. P. Eberhard.

Res. News II, No. 1, 10-19 (Jan. 1965).

8995. Resins and technics used in constructing

dentures, G. C. Paf f enbarger , J. B. Woelfel, and

W. T. Sweeney. Book, Dental Clinics of North America, pp. 251-262 (W. B. Saunders, Philadelphia,

Pa. , Mar. 1965)

.

8996. Resonance in the light scattered from a plasma, J. Weinstock. Physics Letters 18, No.

1, 21-22 (Aug. 1, 1965). 8997. Restoration of complete dentures inadvertently warped by the patient: Report of case, J. B. Woelfel and G. C. Paf f enbarger . J. Am. Dental

Assoc. 71, 866-870 (Oct. 1965).

8998. Results of an absolute determination of the acceleration of gravity, J. E. Faller. J. Geophys. Res. 70, No. 16, 4035-4038 (Aug. 15, 1965)

.

8999. Results of National Bureau of Standards cor- rosion investigation in disturbed and undisturbed

soils, M. Romanoff. Proc. Appalachian Under- ground Short Course, Tech. Bull. 72, p. 566-589

(West Virginia Univ., Morgantown, W. Va., 1965).

9000. Results of some recent transport calculations

for electrons and bremsstrahlung, M. J. Berger

and S. M. Seltzer. (Proc. 2nd Symp. Protection

Against Radiations in Space, Gatlinburg, Tenn.

,

Oct. 12-14, 1964, Ed. A. Reetz, Jr), Natl. Aeronaut. Space Admin. Spec. Publ. 71, pp. 437-

448 (1965). 9001. Rotating shutter for time-resolved spectroscopy in the microsecond range, I. R. Bartky and

A. M. Bass. Appl. Opt. 4, No. 10, 1354-1356

(Oct. 1965).

9002. Sampling of leather for physical and chemical

examination, J. Mandel and J. R. Kanagy. Book, The Chemistry and Technology of Leather 4, Chapt.

59, 223-242 (Reinhold Publ. Corp., New York,

N. Y., 1965).

9003. Second order effects in the phosphorescence

of benzophenone crystals at 77 K, R. A. Keller.

J. Chem. Phys. 42, No. 11 4050-4051 (June 1965).

9004. Separation of pyrenediones by column chromatography, A. J. Fatiadi. J. Chromatog. 20, 319-

324 (1965). 9005. Shell model treatment of nuclear reactions,

M. Danos and W. Greiner. Phys. Rev. 138, No. IB, B93-B103 (Apr. 1965).

9006. Shift of the R(0) and P(l) infrared lines of HC1 perturbed by noble gases, A. Ben-Reuven. J. Chem. Phys. 42, No. 6, 2037-2042 (Mar. 15, 1965).

9007. Simple arc device for spectral excitation in controlled atmospheres, M. Margoshes and B. F. Scribner. Appl. Spectry. 18, No. 5, 154-155

(1964). H. L. Mason, Standards—still a con- tinuing project, Control Eng. 12, No. 1, 74, (Jan. 1965).

9008. Simultaneous dielectric constant and volume measurements on liquids at high pressures,

N. L. Brown. (Proc. Electrical Insulation Conf. Cleveland, Ohio, Oct. 1964), Natl. Acad. Sci.-

Natl. Res. Council Publ. 1238, pp. 36-40 (1965). 9009. Soil corrosion, W. J. Schwerdtfeger

.

Encyclopedia of Electrochemistry, p. 1068-1071

(Reinhold Publ. Corp., New York, N. Y., Mar. 1965)

.

9010. Solar-flare frequency and observing-time patterns, C. S. Warwick. Astrophys. J. 142, No. 2, 767-772 (Aug. 15, 1965).

9011. Solid-vapor equilibrium in the system hydrogen-methane, M. J. Hiza and R. N. Herring. (Proc. 1964 Cryogenic Engineering Conf., Univ. Pennsylvania, Phila., Pa., Aug. 18-24, 1964), Book, Advances in Cryogenic Engineering 10, Paper Q-5,

390
1965

182-191 (Plenum Press Inc., New York, N. Y.

,

1965)

.

9012. Solute nuclear magnetic resonances in pri- mary lead alloys, L. H. Bennett, R. M. Cotts, and R . J. Snodgrass. (Proc. XHIth Colloque

and Relaxation in Solids), Book, Nuclear Magi- netic Resonance and Relaxation in Solids, Esd.

L. V. Gerven, pp. 171-180 (North-Holland Publ.

Co., Amsterdam, The Netherlands, 1965).

9013. Solution polishing of oriented single

crystals, R. D. Deslattes, B. G. Simson, and

A. T. Horton. Rev. Sci. Instr. 36, No. 7, 943-944 (July 1965)

.

9014. Some additional features of radar returns

from the equatorial electrojet, B. B. Balsley.

J. Geophys. Res. 70, No. 13, 3175-3182 (July

1, 1965).

9015. Some aspects of non-equilibrium thermo- dynamics in the presence of a radiation field,

R. N. Thomas. Book, (University of Colorado

Press, Boulder, Colo., 1965).

9016. Some electrochemical aspects of germanium

dissolution. Simultaneous chemical and electrochemical oxidation, W. E. Reid, Jr. J. Phys.

Chem. 69, No. 7, 2269-2277 (July 1965).

9017. Some electrochemical aspects of germanium

dissolution. Valence states and electrode potential, W. E. Reid, Jr. Phys. Chem. 69, No. 9, 3168-3171 (Sept. 1965). 9017A. Some evidence of the influence of long-term magnetic activity on medium frequency sky wave

propagation, A. F. Barghausen and D. A. Lillie.

Proc. IEEE Letter 53, 2115-2116 (Dec. 1965).

9018. Some experience with the Hayward linear nota- tion system, H. W, Hayward, H. M. S. Sneed,

J. H. Turnipseed, and S. J. Tauber. J. Chem. Doc.

5, No. 3, 183-189 (Aug. 1965).

9019. Some factors affecting the sensitivity and spectral response of thermoelectric (radiometric)

detectors, R. Stair, W. E. Schneider, V/. R. Waters, and J. K. Jackson. Appl . Opt. 4, No. 6, 703-710 (June 1965)

.

9020. Some measured rates for oxygen and nitrogen

ion-molecule reactions of atmospheric importance, including 0

++N2 N0+

+N, F. C. Fehsenfeld, A. L. Schmeltekopf , and E. E. Ferguson. Planetary

Space Sci. 13, 219-223 (1965). 9021. Some new co-ordination compounds of copper

(II) chloride, C. W. Reimann and G. Gordon. Nature

205, No. 4974, 902-903 (Feb. 27, 1965).

9022. Some physical characteristics of agar im- pression materials, M. Ohashi, G. C. Paf f enbarger

,

and J. W. Stanford. J. Nihon Univ. Sch. Dent. 7, No. 1, 1-11 (Mar. 1965).

9023. Some unorthodox predictions, F. L. Alt. Computers and Automation XIV, No. 1, 11 (Jan. 1965).

9024. Spectra of C 3 in solidified gases at 4° and

20° K, R. L. Barger and H. P. Broida. J. Chem. Phys. 43, No. 7, 2364-2370 (Oct. 1, 1965).

9025. Spectra of C 2 in solidified gases at 4° and

20° K, R. L. Barger and H. P. Broida. J. Chem.

Phys. 43, No. 7, 2371-2376 (Oct 1, 1965).

9026. Spectra of matrix isolated Nif 2 and NiCl 2 , D. E. Milligan, M. E. Jacox, and J. D. McKinley.

J. Chem. Phys. 42, No. 3, 902-905 (Feb. 1965).

9027. Spectral distribution of typical daylight

as a function of correlated color temperature

(condensed version), D. B. Judd. Ilium. Eng.

60, No. 4, 272-278 (Aug. 1965).

9028. Spectral properties of plants, D. M. Gates,

H. J. Keegan, J. C. Schleter, and V. R. Weidner. Appl. Opt. 4, No. 1, 11-20 (Jan. 1965).

9029. Spectrophotometric determination of bromine

and hydrogen bromide, E. C. Creitz. Anal. Chem.

37, 1690-1692 (Dec. 1965).

9030. Spectrophotometric determination of the rate of dissociation of tetrafluorohydrazine

behind a shock wave, L. M. Brown and B. Darwent.

J. Chem. Phys. 42, No. 6, 2158-2165 (Mar. 15, 1965).

9031. Spectrum of doubly ionized lanthanum (La III), J. Sugar and V. Kaufman. J. Opt. Soc. Am.

55, No. 10, 1283-1285 (Oct. 1965).

9032. Spectrum of stationary homogenous and mag- netohydrodynamic turbulence, C. M. Tchen. Phys. Fluid 8, No. 9, 1659-1667 (Sept. 1965).

9033. Speed of sound in fluid parahydrogen, B. A. Younglove. J. Acoust. Soc. Am. 38, No. 3, 433-

438 (Sept. 1965).

9034. Stability of the shape of a solid cylinder growing in a diffusion field, R. L. Parker and

S. R. Coriell. J. Appl. Phys. 36, No. 2, 632-

637 (Feb. 1965).

9035. Stability of traveling waves in lasers, J. A. White. Phys. Rev. 137, No. 6A, A1651-A1654

(Mar. 1965).

9036. Standardization of analytical data obtained with the silver-silver chloride electrode in methanol water solvents, M. Paabo, R. G. Bates,

and R. A. Robinson. Anal. Chem. 37, No. 4, 462-464 (Apr. 1965).

9037. Standardization of plastics in the U. S.,

G. M. Kline. Courrier de la Normalisation No. 182, pp. 280-282 (Mar. -Apr. 1965); Mod. Plastics

42, No. 9, 176 (May 1965)

.

9038. Standards, sources, and detectors in radiation measurements, R. Stair and W. E. Schneider.

(Symp. Measurement of Thermal Radiation of Solids, San Francisco, Calif., Mar. 4-6, 1964), NASA Spec. Publ. SP-55, Session III, Paper 24, pp. 217-231 (1965). 9039. Standards— still a continuing project, H. L. Mason. Control Eng. 12, No. 1, 74 (Jan. 1965).

9040. Statistical design of experiments, W. J. Youden. Handbook on Metals Engineering—Design, American Society of Mechanical Engineers, Chapt.

3, Pt. 5, pp. 583-585 (McGraw-Hill Book Co.,

Inc., New York, N. Y. , 1965).

9041. Status of linear relations among heats of transport, R. E. Howard and A. B. Lidiard.

J. Chem. Phys. 43, No. 11, 4158-4160 (Dec. 1, 1965).

9042. Stratospheric moisture measurements using

infrared spectroscopy, D. M. Gates. (Proc. 1963 Intern. Symp. Humidity and Moisture, Wash.

D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry. Vol.

2. Applications, Sec. VI, Paper 1, pp. 446-

449 (Reinhold Publ. Corp., New York, N. Y.

,

1965)

.

9043. Strength of fingernails, R. W. Young,

S. B. Newman, and R. J. Capott. J. Invest. Dermatol. 44, No. 5, 358-360 (May 1965).

9044. Stress corrosion cracking of metals, H. L. Logan. Metals Eng. Quart. 5, No. 2, 32-38

(May 1965).

9045. Stress relaxation of 7-irradiated fluoro- carbon elastomers, T. Yoshida, R. E. Florin,

391
1965

and L. A. Wall. J. Polymer Sci. A3, No. 5, 1685-1712 (May 1965)

.

9046. Stress-strain properties of textile yarns subjected to rifle bullet impact, C. A. Fenstermaker and J. C. Smith. J. Appl. Polymer Sci.

1, 125-146 (1965). 9047. Stress-strain relationships in yarns subjectei

to rapid impact loading. Part XI: Strain

distributions resulting from rifle bullet impact, J. C. Smith, C. A. Fenstermaker , and P. J. Shouse. Textile Res. J. 35, No. 8, 743-757

(Oct. 21, 1965).

9048. Structure of electrodeposited lead dendrites,

F . Ogburn, C. J. Bechtoldt, J. B. Morris, and

A. DeKoranyi. J. Electrochem. Soc . 112, No. 6, 574-577 (June 1965)

.

9049. Study of methods for estimating loudness,

E. L. R. Corliss and G. E. Winzer. J. Acoust.

Soc. Am. 38, No. 3, 424-428 (Sept. 1965).

9050. Substoichiometric radiometric analysis: determination of trace amounts of cobalt,

A. R. Landgrebe, L. T. McClendon, and J. R. DeVoe. (Proc. Intern. Atomic Energy Agency

Symp. Radiochemical Methods of Analysis, Salzburg, Austria, Oct. 19-23, 1964), Book, Radio Chemical Methods of Analysis II, 321-333 (Intern. Atomic Energy Agency, Vienna, Austria, 1965).

9051. Suppression at high temperature of effects

due to statistics in the second virial coef- ficient of a real gas, S. Y. Larsen, J. E. Kilpatrick, E. H. Keb, and H. F. Jordan. Phys.

Rev. 140, No. 1A, A129-A130 (Oct. 1965).

9052. SU(6) Clebsch-Gordan coefficients for the product 35x56, J. C. Carter, J. J. Coyne, and

S. Meshkov. Phys. Rev. Letters 14, No. 13, 523-526 (Mar. 1965).

9053. SU(6)

W photoproduction and meson-baryon

scattering amplitudes, J. C. Carter, J. J. Coyne, S. Meshkov, D. Horn, M. Kugler, and H. J. Lipkin. Phys. Rev. Letters 15, No. 8, 373-377

(Aug. 23, 1965).

9054. Surface ionization of niobium, M. D. Scheer

and J. Fine. J. Chem. Phys. 42, 3645 (1965). 9055. Tables of thermodynamic properties of air

in chemical equilibrium including second virial corrections from 1500°K to 15,000°K, J. Hil- senrath and M. Klein. Air Force Systems Command, AEDC-TR-65-5S (Arnold Engr. Develop.

Center, Arnold Air Force Station, Tenn. , Mar. 1965)

.

9056. Technique for spin-lattice relaxation times,

G. A. Candela and R. E. Mundy . Rev. Sci. Instr.

36, No. 3, 338-342 (Mar. 1965).

9057. Techniques for detection of high-altitude

nuclear explosions, A. G. Jean, C. E. Hornback,

R. H. Doherty, J. R. Winkelman, and R. T. Moore.

Proc. IEEE 53, No. 12, 2088-2098 (Dec. 1965).

9058. The absolute photometry of the zodiacal

light, L. L. Smith, F. E. Roach, and R. W. Owen. Planet Space Sci. 13, 207-217 (Mar. 1965).

9059. The annealing of vacancies in dilute alloys,

R. E. Howard anj. A. B. Lidiard. Phil. Mag. 11, No. 114, 1179-1187 (June 1965).

9060. The brush cathode plasma—a well behaved

plasma, K. B. Persson. J. Appl. Phys. 36, No.

10, 3086 (Oct. 1965).

9061. The calibration of the NBS tritiatedtoluene standard of radioactivity, S. B. Garfinkel, W. B. Mann, R. W. Medlock, and

0. Yura. Intern. J. Appl. Radiation Isotopes

16, 27-33 (1965).

9062. The constitution of CuFe 508 , C. F. Jefferson.

J. Appl. Phys. 36, No. 3, 1165-1166 (Mar. 1965).

9063. The correction factor for fast neutron re- actions on sulfur and oxygen in the manganous- sulfate-bath calibration of neutron sources,

W. M. Murphey. Nucl. Instr. Methods 37, No. 1, 13-21 (1965). 9064. The crystal and molecular structure of iodo- pentaborane-9, L. H. Hall, S. Block, and A. Perloff. Acta Cryst. 19, Pt. 4, 658-661 (Oct. 1965)

.

9065. The crystal structure of barium tetraborate,

BaO. 2B2O3, S. Block and A. Perloff. Acta Cryst.

19, Pt. 3, 297-300 (Sept. 1965).

9066. The current revision of the solar spectrum

table A2935A" to 8770A*, C. E. Moore. Proc. Utrecht Symp. Solar Spectrum, Utrecht, The

Netherlands, Aug. 26-31, 1963, Ed. C. DeJager,

pp. 89-101 (D. Reidel Publ. Co., Dordrecht, The

Netherlands, 1965).

9067. The definition of alginate impression materials by a specification, M. Ohashi, G. C. Paffenbarger, and J. W. Stanford. J. Nihon Univ. School of Dentistry 7, No. 1, 12-28 (Mar. 1965).

9068. The design and performance of multirange

current transformer standards for audio frequencies, B. L. Dunfee. IEEE Trans. Instr. Meas

.

IM-14, No. 4, 190-204 (Dec. 1965).

9069. The determination of work function from the ratio of positive to negative surface ionization vof an alkali halide, J. Fine, T. E. Madey, and

M. D. Sheer. Surface Sci. 3, 277 (1965).

9070. The direction of the force on a dislocation

and the sign of the Burgers vector, R. DeWit. Acta Met. 13, No. 11, 1210-1211 (1965). 9071. The distribution of electrons in the lower

and middle ionosphere, R. W. Knecht. Book, Progress in Radio Science 1960-1963. Vol. III. The Ionosphere, pp. 14-45 (Elsevier Publ. Co., Amsterdam, The Netherlands, 1965).

9072. The dynamic collective theory of odd A nuclei,

M. Danos, W. Greiner, and C. B. Kohr. Phys. Rev.

138, No. 5B, B1055-B10'66 (June 1965).

9073. The effect of a fatigue crack on the fatigue

strength of an aluminum alloy, J. A. Bennett.

Mater. Res. Std. 5, No. 5, 235-239 (May 1965).

9073A. The effect of atmospheric noise on the probability of error for an NCFSK system, A. M. Conda. IEEE Trans. Commun. Technol. CT-13, No.

3, 280-284 (Sept. 1965).

9074. The effect of environment on the fatigue strengths of four selected alloys, T. R. Shives

and J. A. Bennett. NASA Contractor Report CR267, 2-22 (Aug. 1965).

9075. The effect of ion-drag on the neutral air in the ionospheric F-region, H. Rishbeth and L. R. Megill. Ann. Geophys . 21, No. 2, 23 5-244 (Apr.- June 1965)

.

9076. The effect of moisture on surface flammability

of coated and uncoated cellulosic materials, T. G. Lee, J. L. Loftus, and D. Gross. Am. Soc. Testing Materials Spec. Tech. Publ. 385, 112-123

(May 1965).

9077. The evolution of control system standards,

H. L. Mason. 1965 Joint Automatic Control Conf., June 22-25, 1965, Session VII, Paper 1, pp. 76-

78 (Renssalaer Polytechnic Inst., Troy, N. Y., 1965).

9078. The evolution of designed experiments, W. J. Youden. Proc. IBM Scientific Computing Symp. Statistics, Thomas J. Watson Research Center,

3 92
1965 Yorktown Heights, N. Y. , Oct. 21-23, 1963, pp. 59-67 (IBM, White Plains, N. Y. , 1965).

9079. The fundamental solution and Huygens 1 prin- ciple for decomposable differential operators,

J. E. Lagnese. Archive Rat. Mech. Anal. 19, No. 4, 299-307 (Jan. 22, 1965).

9080. The gas-phase photolysis of cyclohexane in far ultra-violet: Modes of decomposition of the neutral excited cyclohexane molecule and reactions of the parent cyclohexane ion, R. D. Doepker and P. Ausloos. J. Chem. Phys. 42, No.

11, 3746 (June 1, 1965).

9081. The IBS role in plans for better measurement

accuracy, R. D. Huntoon and W. A. Wildhack.

ISA J. 12, No. 1, 57-60 (Jan. 1965).

9082. The intensity and spectral distribution of scattered radiation from Co.60 sources, B. Petree and J. C. Humphreys. Radiology 84, No. 1, 129-130 (Jan. 1965)

.

9083. The international system of units, A. G. McNish. Am. Soc. Quality Control Annual Tech. Conf. Trans, pp. 431-438 (1965); Mater. Res.

Std. 5, No. 10, 528-532 (Oct. 1965).

9084. The ionosphere; new guide, how to listen to the world. A. H. Shapley. World Publ. 11, 15- 18 (Hellerup, Denmark, Mar. 1965).

9085. The mass spectrum of yttrium chloride vapor,

J. D. McKinley. J. Chem. Phys. 42, No. 6, 2245-2246 (Mar. 15, 1965).

9086. The measurement of water vapor boundary

layers in biological systems, D. M. Gates.

(Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science and Industry.

Vol. 2. Applications, Sec. I, Paper 5, pp. 33-

38 (Reinhold Publ. Corp., New York, N. Y.

,

1965)

.

9087. The NBS standard hygrometer, A. Wexler and

R. W. Hyland. (Proc. 1963 Intern. Symp., Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Vol. 3, Fundamentals

and Standards, Sec. II, Paper 19, pp. 389-432

(Reinhold Publ. Corp., New York, N. Y., 1965). 9087A. The NBS-A time scale —its generation and dissemination, J. A. Barnes, D. H. Andrews,

and D. W. Allan. IEEE Trans. Instr. Meas. IM14, No. 4, 228-232 (Dec. 1965).

9088. The NBS time scale and its relation to other

time scales, J. A. Barnes and R. C. Mockler.

(Proc. XIV General Assembly of URSI, Tokyo,

Japan, 1963), Book, Progress in Radio Science

1960-1963. Vol. I. Radio Standards and Measurements, Ed. R. W. Beatty, pp. 41 (Elsevier Publ.

Co., Amsterdam, The Netherlands, 1965).

9089. The performance of lenses made from inhomogeneous glasses, F. W. Rosberry. Appl. Opt. 4, No. 1, 21-24 (Jan. 1965).

9090. The place of radiochemical methods of analysis: today and tomorrow, W. W. Meinke. (Proc. Intern. Atomic Energy Agency Symp. Radiochemical

Methods of Analysis, Salzburg, Austria, Oct. 19-23, 1964), Book, Radiochemical Methods of Analysis I, 13-19 (Intern. Atomic Energy Agency,

Vienna, Austria, 1965).

9091. The polarographic analysis of titanium (IV)

EDTA complexes, H. W # Berger and B. C. Cadoff.

J. Paint Technol. Eng. Official Digest 37, No. 480, 28-34 (Jan. 1965).

9092. The polarographic analysis of white lead

and zinc oxide in white paint pigments, H. W.

Berger and B. C. Cadoff. J. Paint Technol. Eng. Official Digest 37, No. 480, 35-42 (Jan. 1965).

9093. The relationship of a.c. resonant probes to resonant scattering, W. M. Leavens. Physics

Letters 19, No. 2, 118-120 (Oct. 1, 1965).

9094. The realization and use of the international practical temperature scale of 1948, J. P. Evans.

ISA 20th Annual Conference and Exhibit, Los Angeles, Calif., Oct. 4-7, 1965), ISA Preprint 14.3-1-65 (1965). 9095. The structures of anhydrous sodium trimetaphosphate, Na 3 P3 0 9

, and the monohydrate, Na 3P 3 0 9

. H 2 0, H. M. Ondik. Acta Cryst. 18, Pt . 2, 226-

232 (Feb. 1965).

9096. The surface ionization of niobium, M. D. Scheer and J. Fine. J. Chem. Phys. 42, 3645

(1965) . 9097. The system W03 -B 2 08 , E. M. Levin. J. Am. Ceram. Soc. 48, No. 9, 491-492 (Sept. 1965).

9098. The temporal dimensional stability of sur- face-hardened steels, M. R. Meyerson. Metal Treating 15, No. 6, 5 (Dec. 1964-Jan. 1965).

9099. The use of electromagnetic signals emitted

from nuclear explosions to study of long-range

VLF propagation, A. G. Jean and J. R. Wait. J. Geophys. Res. 70, No. 5, 1258-1261 (Mar. 1, 1965).

9100. The use of visible and ultraviolet spectroscopy to identify carbonyl compounds in photo- degraded plastics, V. E. Gray and J. R. Wright. Polymer Engr. Sci. 5, No. 4, 284-290 (Oct. 1965).

9101. The use of the radio ref ractometer to measure water vapor turbulence, B. R. Bean and R. E. McGavin. (Proc. 1963 Intern. Symp. Humidity and Moisture, Washington, D. C), Book, Humidity and Moisture. Measurement and Control in Science

and Industry. Vol. 2. Applications, Sec. VII, Paper 67, pp. 561-568 (Reinhold Publ. Corp., New

York, N. Y., 1965).

9102. The vibrational assignment of sulfuryl fluoride, D. R. Lide, D. E. Mann, and J. J. Comeford. Spectrochim. Acta 21, 497-501 (1965). 9103. The W-spin and B-spin subgroups of SU(12),

H. J. Lipkin and S. Meshkov. Phys. Rev. Letters

14, No. 16, 670-672 (Apr. 1965).

9104. The use of topside sounders in ionospheric

research, K. Davies. ITU Telecommunications J. pp. 1-8 (Mar. 1965).

9105. The world of cryogenics. III. Cryogenics at the National Bureau of Standards Boulder Lab- oratories, B. W. Birmingham. Cryogenics 5, No. 3, 121-128 (June 1965)

.

9106. Thermal conductivity and thermoelectric power

of rutile (Ti02 ), W. R. Thurber and A. J. H. Mante. Phys. Rev. 139, No. 5A, A1655-A1665 (Aug.

30, 1965).

9107. Thermal conductivity and viscosity of simple

fluids, J. V. Sengers. Intern. J. Heat Mass Transfer 8, 1103-1116 (1965). 9108. Thermal decomposition of 2 , 3-dimethylbutane

in a single-pulse shock tube, W. Tsang. J. Chem.

Phys. 43, No. 2, 352-359 (July 15, 1965).

9109. Thermal diffusion of substitutional im- purities in metals, R. E. Howard and A. B. Lidiard. Acta Met. 13, No. 4, 433-444 (1965). 9110. Theoretical electromotive forces for cells containing a single solid or molten fluoride,

bromide, or iodide, W. J. Hamer, M. S. Malmberg,

and B. Rubin. J. Electro. Chem. Soc. 112, No. 7, 750-755 (July 1965).

393
1965

9111. Theoretical electromotive forces for cells containing a single solid or molten oxide, W. J. Hamer. J. Electroanal. Chem. 10, 140-150 (1965). 9112. Theory of relaxation in a group of weakly

coupled systems, R. L. Peterson. Phys. Rev. 139,

No. 4A, A1151-A1155 (Aug. 1965).

9113. Thermodynamic properties of neon from 25 to 300°K between 0.1 and 200 atmospheres, R. D. McCarty and R. B. Stewart. Book, Advances in Thermophysical Properties at Extreme Temperatures and Pressures, pp. 84-97 (Am. Soc. Mech.

Eng., New York, N. Y. , 1965). 9114. Thermodynamics of solid carbon dioxide solubility in liquid solvents at low temperatures, A. L. Myers and J. M. Prausnitz. Ind. Eng. Chem. 4, No. 2, 209-212 (May 1965).

9115. Thermogravimetric study of some new transition metal-Schiff base coordination polymers,

E. Horowitz, M. Tryon, and R. G. Christensen.

J. Appl. Polymer Sci. 9, 2321-2336 (1965). 9116. Time-correlation functions and transport coefficients in statistical mechanics, R. Zwanzig. Ann. Rev. Phys. Chem. 16, 67-102

(1965) . 9117. Total photonuclear cross sections for low atomic number elements, J. M. Wyckoff, H. W. Koch, B. Ziegler, and R. Uhlig. Phys. Rev. 137,

No. 3B, B576-B594 (Feb. 1965).

9118. Transfer line surge, W. G. Steward. (Proc. 1964 Cryogenic Engineering Conf .

, Univ. Pennsylvania, Phila., Pa., Aug. 18-24, 1964), Book, Advances in Cryogenic Engineering 10, Paper 1-3, 313-322 (Plenum Press Inc., New York, N. Y., 1965)

.

9119. Transition from resonant to non-resonant line shape in microwave absorption, A. Ben-Reuven.

Phys. Rev. Letters 14, No. 10, 349-351 (Mar.

8, 1965).

9120. 22 ISCC-NBS centroid colors of maximum contrast, K. L. Kelly. Color Engr. 3, No. 6, 26-27

(Nov. -Dec. 1965).

9121. Two cases of stress corrosion cracking in copper tubing, H. L. Logan and G. M. Ugiansky.

Mater. Protect. 4, No. 5, 79-80 (May 1965).

9122. Two-dimensional probability distribution in

a turbulent field, F. N. Frenkiel and P. S. Klebanoff. Phys. Fluids 8, No. 12, 2291-2293

(Dec. 1965).

9123. Two-electron excitation states in helium,

R. P. Madden and K. Codling. Astrophys. J. 141,

No. 2, 364-375 (Feb. 1965).

9124. Ultrasonic determination of crystalline re- sonances and sound velocities using NMR techniques, R. J. Mahler and W. H. Tanttila. J. Acoust. Soc. Am. 38, No. 3, 429-432 (Sept. 1965).

9125. Uncertainties associated with proving ring calibration error, T. E . Hockersmith and H. H. Ku. ISA J. 12, No. 6, 73-77 (June 1965).

9126. Use of general purpose coding systems for statistical calculations, J. M. Cameron and J. Hilsenrath. Proc. IBM Scientific Computing Symp. Statistics, Thomas J. Watson Research Center, Yorktown Heights, N. Y. , Oct. 21-23 1963, pp. 281-299 (IBM, White Plains, N. Y., 1965).

9127. Vacuum ultraviolet photochemistry. VIII. Propylene, D. A. Becker, H. Okabe, and McNesby, Jr. J. Phys. Chem. 69, No. 2, 538-542

(Feb. 1965).

9128. Vacuum-ultraviolet photolysis of ethane

at high temperature, R. F. Hampson, Jr. and J. R. McNesby. J. Chem. Phys. 42, No. 6, 2200-2208

(Mar. 15, 1965).

9129. Vacuum-ultraviolet photolysis of ethane at high temperature. II. Collisional deactivation

of excited ethylene, R. F. Hampson, Jr. and

J. R. McNesby. J. Chem. Phys. 43, No. 10, 3592-3596 (Nov. 15, 1965).

9130. Vacuum-ultraviolet photolysis of ethane in liquid-nitrogen solution, J. A. Pirog and J. R. McNesby. J. Chem. Phys. 42, No. 7, 2490-2494

(Apr. 1, 1965).

9131. Vibrational fundamentals of CF 2 N2 from the ultraviolet absorption spectrum, J. D. Simmons,

I. R. Bartky, and A. M. Bass. J. Mol . Spectr.

17, No. 1, 48-49 (July 1965).

9132. Viscosity and density of boron trioxide,

A. Napolitano, P. B. Macedo, and E. T. Hawkins.

J. Am. Ceramic Soc. 48, No. 12, 613-616 (1965). 9133. Volume relaxation of As 2 03 in the glass transformation, A. B. Bestul. Proc. Intern. Conf. on Physics of Non-Crystalline Solids,

Delft, The Netherlands, July 1964, pp. 426-435

(North-Holland Publ., Amsterdam, The Netherlands,

1965)

.

9134. Volume relaxations in amorphous polymers,

R. S. Marvin and J. E. McKinney. Book, Physical

Acoustics, Ed. W. P. Mason, IIB, Chapt. 9, 165-229 (Academic Press Inc., New York, N. Y.

,

1965)

.

9135. Watermarks for papermaking by electroforming,

J. P. Young. Metal Finishing 63, No. 4, 79-82

(Apr. 1965).

9136. Wave mode modification in liquid helium with clamped normal fluid, G. L. Pollack and J. R. Pellam. Proc. 9th Intern. Conf. Low Temperature

Physics, Columbus, Ohio, Sept. 1964, pp. 166

(Plenum Press Inc., New York, N. Y. , 1965); Phys.

Rev. 137, A1676-A1684 (Mar. 1965).

9137. Weathering: theoretical and practical

aspects of asphalts, J. R. Wright. Book, Bituminous Materials: Asphalts, Tars, and Pitches,

Ed. A. J. Hoiberg, Vol. 2. Asphalts, Pt . 1, Chapt. 8, pp. 249-306 (John Wiley and Sons, New

York, N. Y. , 1965)

.

9138. Weight checking of aerosols, S. Hasko. Mod. Packaging 38, No. 11, 141 (July 1965).

9139. Width of the microwave lines of oxygen and their relationship to the thermal noise emission

spectrum of the atmosphere, R. L. Abbott. Proc. 3d Symp. Remote Sensing of the Environment, In- frared Phys. Lab., Inst. Sci. Tech. Univ. Michigan, Ann Arbor, Mich., Feb. 1965, pp. 257-269

(Mar. 1965).

9140. Widths of transmission Kikuchi lines in silicon and diamond, F. A. Fowler and L. Marton. J. Appl. Phys. 36, No. 6, 1986-1995 (June 1965).

9141. Work function measurements on field emitters

with prescribed orientation, J. W. Little, T. E. Madey, and R. Klein. J. Appl. Phys. 36, No. 4, 1491-1492 (Apr. 1965).

9142. W-spin analysis of weak decays in U(12),

D. Horn, M. Kugler, H. J. Lipkin, S. Mechkov,

J. C. Carter, and J. J. Coyne. Phys. Rev. Letters

14, No. 17, 717-719 (Apr. 1965).

9143. W-spin and B-spin subgroups of SU(12), H. J. Lipkin and S. Meshkov. Phys. Rev. Letters 16, No. 14, 670-672 (Apr. 19, 1965).

394
1965

9144. Xenon photosensitized formation of metastable nitrogen, M. D. Scheer and W. M. Jackson. Science 148, 3678 (1965). 9145. X-ray spectrochemical analysis of materials:

cement and dental alloys, B. L. Bean and B. W. Mulligan. Am. Soc . Testing Mater. Spec. Tech.

Publ. 373, Application of Advanced and Nuclear

Physics to Testing Materials, pp. 25-45 (June

17, 1965).

9146. X-ray study of isothermal thickening of lamellae in bulk polyethylene at the crystallization temperature, J. D. Hoffman and J. J.

Weeks. J. Chem Phys. Note 42, No. 2, 4301- 4302 (June 15, 1965).

9147. You can always tell a computer but you can't

tell it much, J. H. Wegstein. Proc. ARO Working

Group on Computers, Harry Diamond Laboratories, Washington, D. C, Feb. 4-5, 1964, pp. 129-151

(Feb. 1965).

9148. Zeeman filter, K. G. Kessler and W. G. Schweitzer. J. Opt. Soc. Am. 55, No. 3, 284-288

(Mar. 1965).

9149. Zone refiner with temperature control, F. Ordway. Anal. Chem. 37, 1178-1180 (Aug. 1965).

3 95
5. AVAILABILITY OF NBS PUBLICATIONS

5.1. PRICE LISTS

The following lists give the numbers and prices of all NBS publications issued

from 1901 through June 50, 1966 which may be purchased from Federal Government

sources. Order publications from the Superintendent of Documents, U.S. Government Printing Office or from the U.S. Department of Commerce Field Office nearest you

(see Purchase Procedures, page V)'. Nonperiodicals (but not periodicals ) may also be ordered through the Clearing- house for Federal Scientific and Technical Information (see page II). Following the price list are Sections 5.2. Reprints of Articles by NBS Authors,

and 5.3. Out-of-Print Material.

$0.25

• 50 OP

No. 259 see C363

257 see C365

280 see C406

294 see C407

500 see C4l8

319 see CJ78

322 see C36O

328 see Mono. 15- 330 see C362

332 see Mono. 15- 339 see C363

371 see C378

375 see C457

380 see C4l8 383 see C4-24 390 see H71 392 see C432 396 see C4l8

3§8 see M260

399 see C406

400 see C426

402

410

413 see C426

414 see H71 415 see Mono. 47- 428 see C533

434 see C602 435 see H71 458 447

4-50 see C579 456 .jee Mono. 47- 460

460 Supplement**-

$0.15

OP

.15

• 30 2.50

• 30 1.25

1.50

No. 461 462 see Mono. 80

in part 464

465 see H90 466 see H71 467 Volume I 467 Volume II 467 Volume III 468

47O

474- see C576

475 476

477 see C555

482 see C509 485 see 0592 488 Sections 1 & 2- 488 Section 3 488 Section 4 488 Section 5 495 see Mono. 18—

499

500 Pt. I see TN270-1 TN270-2

500 Pt. II see TN270-1 TN270-2

501 506 see C576

,508 see C56I

510 Suppl. No. 2—

514 518 see Mono. 70, Volume I in part

Volume II in part-

*See page 405 for additional information.

396
C IRCULARS—cont inued

$2.00 1.50

1.50

2.50

.20 .45

.45 .45

.45

.45

.40

.40 .45

.40 .40 1.25

.55

• 50

553

555

559 see Hfl

561 563 & 563 Supple- ment 1, see M274-

564

565

566 567 -ee M271

569

571 572 see Mono. 15-

574 575- 576

577 & 577 Supplement 578-

$2.00

o-3° 8.75

1.25

579 * 580 see M251 $0.15

581 1 . 50 582 3.25

583 .35 583 Supplement .15 585 .50 587 .15 589 . 50 590 .20 593 .30 596 . 30 598 .15 600 see Mono. 90— 1.50

601 .30 602 .20 603 .65

*See page 405for additional information

Price $0.45

6.00

6.00

.45

.20

.20

•? 5

.40 .15

.20

.20 1.50

1.50

• 15

.15

.20 .65

.60 2.75

.20 2.00

.20 .20

.40

• 35

.40

• 55

.20

No. 27

2^ Supplement

2930

31

32 Part I 32 Part II g:::::::::::::::

34 Volume 2

- ...

38

39

40

414243 Volume I 43 Volume II

4445

46

4748

49

50

51

52 S144 and supersede 397

Price No. $0.15

.20 .25

.20

• 55

53

5455

56

57 See M274

, - 35 4.00

3.00

.55 2.75

58

59

606263 2.00

.60 .30

• 70

64I:::::::::::::::::

g.:::::::::::::::::

.40

• 30

• 25

• 75

6.50

69

70 Volume I 70 Volume II

7172 6.25

• 15

.15

.20

• 30

73

7n 76- TM

.20 2.75

• 35

.30 1.00

g:::::::::::::::::

81

8283

Price $4.25

• 25

.20

.30

• 50

.20 1-75

• 25

.15

• 35

• 15

• 15

.35

.60 .25

.30 2.00 3.00

2.00

• 35

• 30

• 30

• 35 2-75 3.25

^Consolidated supplement to B;' supplements 1 & 2 of BMS144.
MONOGRAPHS—continued

$0.35

70

No. 90

91

92 93

94

Price

.25 1.50 2.75

.75

• 75

• 45 1.25

APPLIED MATHEMATICS SERIES

Price No. Price No. Price

iO .45

.15

• 50 2.25

.30 1.75

2.00

.70

• 35

.40 5.50

.15 2.00 3.75

1.75

21- 11

I:

29- 30-

31- 32-

34. 35- t

) -15 .25 3.25

.45 2.00

4.00

.45 3-50

• 30 4.75 2.25

2.00

2.00

4.00

• 25

40 $ .35 41 3.25

43 3 >00 4445 .55 46 .50 47 _4 5 48 .50 49 .50 50 3.25

51 4.50

53 4. 00

55 6.5o

56 .30 57 .15 56 .40 mISC. LL." ;_JOUS PUBLICATIONS

No. Price

85 see H29

89 see H28, Pert I—

H28, Part II—

H28, Part IIIH28, Suppl.—

$0.05

OP35

1.25 P.60

• 70

130 see M178

134 see Ml60

141 see H28, Part I H28, Part IIH28, Part III

H28, Suppl.—

143 see M146

144 see Ml 54 152 see MI63

153 see Ml60 169 see M230

171 see MI87 172 see M243

174 see M211

179 I87 192

196

197

203 see M243

211 214

OP

OP $1.2575

.60

• 70 OP

.45

.25

232 $0.50

234 .05 235— .75 236, 1966 Ed. .15 240 2.25

241 see M260 .45 243 .40 245 1.00

246 .70 247 .35 248 1.75

249 1.00

250, 1965 Ed. 1.00 251 .15 252- - .15 253 (6.25 per 100) .10 254 .75 255 1-00 256 2.25

257 1.75 258 1.25

*See page 405 for additional information. 398
MISCELLANEOUS PUBLICATIONS— continued

No. 259

260 260-1—

260-2— 260-3—

260-4—

260-5— 260-6—

260-7—

260-8—

Price $0.05

.45

• 30

• 35

.20

.20 .25

.60 P

• 55

No. 260-9 26O-IO

261 262-1

263 265

266

267 268 (6.25 for 100) 269

Price $0.15

• 30 1.25

.60 1.00

3.00 3-75

2.00

No. 270—

271 274— 275—

276 27.7-—

278- —

279—

No. No. No.

1 see H82

2 see H24 3 see H30#

7 see H33

8 see H34

9 see H55

10 see H35#

11 see Hb2

12 see H46

14 see H29

15 see H76

17 see H46

20 see H76

21 see H46

22 see H44, Third Ed.- 23 see H73

25 see H28, Part I H28, Part II—

H28, Part IIIH28, Suppl. 26 see HB2

2b 1957 '(Part I) 28 1957 (Pert II) 28 1957 (Part III) 28 1963 Supplement

29 see H44, Third Ed.- 30#

32 see H8l

37 see H94

40 see H46

41 see IT76 42 see H92 43#

44 (3d Ed. ) looseleaf46

$1.75

OP 2.25

1-75 1.75

2.00

• 30 1.25

.75

.60

. .70 1.75 1.25 P.60

• 70 2.00 2.25 1-75

3.00

OP 2.00

4^ see H84 to H89

49 :::::::::::::::

5152 see H69

53

54 see H73

55

56 see H65

5758

5960 see H76

62 see H84 to H89

63

6465

66

6768 see H83

6970

71727374

75

76

77 Part I 77 Part II 77 Part III 78 see H84 to H89 8l#

82

$0.20

.20

• 35

.15

• 30

.25

.15

.15

.20

• 35

.20 .15

.20

• 35 1.25

• 35

• 35

.30 .15

6.00 6.75

7.00

.35

.50 1.75

1.75

Ii:

87-

88-

89- 90-

91-

92-

It. 95-

96- 97-

98- 99-

100' 101-

#H£l amends in part: Part 2, Definitions and the Grounding Rules of thes.

•^See page 405 for additional information.
NATIONAL STANDARD REFERENCE DATA SERIES

No

.

Price

1 $0.15

2 .45

3. Section 1 • 35

4, Volume I 2.50

BUILDING SCIENCE SERIES

No. Price

2, Part 1 $0.35

5 .15

4 - .20

5, Part 2 • 35

g .20

COMMERCIAL STANDARDS

Price No. $0.10

.10

.10 .15

.10 lint:::::::::

254.-63 255- 63- 256- 63—

.10 .15

.10

.10 .10

258- 63

259-63 with 1966 amendment

260-63

261-63

262- 63

No. 263- 64- 264- 64- 265- 64- 266- 64- 267- 65- 268-65- 269- 65- 270- 65- 271- 65- 272- 65- 273- 65-

$0.10

.10

.15

.10 .15

SIMPLIFIED PRACTICE RECOMMENDATIONS

No. Price 53-63 179-63

229-63

265-63

266- 63 267- 65

$0 . 10

.10

.10 .05

.10

.10 BUILDING MATERIALS AND -STRUCTURES REPORTS

No. No. 17 See BMS144

17 Supplement 1 see Mono. 77 : 17 Supplement 2 see

Mono. 77

19 see BMS116

66

110 H7 140, Third Ed.-

OP

$0 . 40

.20 .25

• 30

144

144 Supplements

2 see Mono

.

!48

149 151---

152

$0 . 40

.40 .15

.20

400
PURCHASE OF TECHNICAL NOTES

The following is a list of the National Bureau of Standards Technical Notes available only by purchase from the Clearinghouse for Federal Scientific and Technical

Information, 5285 Port Royal Road, Springfield, Virginia, 22151, at the prices indicated.

The "PB" number in parenthesis is to be used when ordering this series. Those prices indicated with an asterisk are only available in "reproduced hard copy or microf ische "

.

No.

1 (PB151360)

2 (PBI5136I)

2-2 (PB151361-2)--

3 (PB151362)

4 (PBI51363)

5 (PB151364)

6 (PB151365

7 (PB151366)

8 (PBI51367)

9 (PBI51368)

10 (PB151369)

11 (PB151370

12 (PB151371

13 PB151372

14 (PBI51373)

15 (PB151374)

16 (PB151375

18 (PBI51377) 18-2 (PB151377-2)-

18-3 (PBI51377-3)-

18-4 (PB151377-4)-- 18-5 (PB151377-5 -

18-6 (PB151377-6)-

18-7 (PB151377-7)-- 18-8 (PBI51377-8)-

18-9 (PB151377-9)-

18-10 (PB151377-10

18-11 (PB151377-11

18-12 (PB151377-12

18-13 (PB151377-13

19 (PB151378)

20 (PBI51379)

21 (PBI5138O)

22 (PBI5138I)

23 (PBI51382)

24 (PB151383)

25 (PB151384)

26 (PBI51385)

27 (PBI51386)

28 (PBI51387)

29 (PB151388)

30 (PB151389

31 (PBI51390

33 (PBI51392

34 (PBI51393)

35 (PB151394)

36 (PB151395

37 PB151396

38 PB151397

39 (PB151398)

$0.75*

3.50*

3.50*

.50*

.75* 1.25* 2.25*

2.25* 1.25*

.75* 1.00*

.50* 3.00*

2.50*

.50* 8.60*

2.75*

2.50*

1.00*

1.00* 1.50*

1.75*

1.75*

1.75*

1.75*

1.75* 1.50*

1.50*

1.00*

1.75*

.50* 1.00*

.75* 1.50*

1.50* 1.00*

.50* 4.00*

1.50*

2.00*

.50* 1.25*

2.25*

2.50*

.50* .75* 4.00*

.50*

.75*

.50*

No. 40-1 (PB151399-1 40-2 (PB151399-2)--

40-3 (PB151399-3)-- 40-4 (PB151399-4)--

4o-5 (PB151399-5)--

40-6 (PB151399-6)--

4o-7 (PB151399-7) —

40-13 (PB151399-13)

41 (PB151400)

42 (PB151401)

43 (PB151402)

44 (PB151403)

45 (PB15l4o4)

46 (PB151405)

47 (PB151406)

48 (PB151407)

49 (PB15l4o8)

50 (PB151409

51 (PBI61552)

52 (PBI61553)

53 (PB161554)

54 (PBI61555)

55 (PBI61556)

56 (PBI61557)

57 (PBI61558)

58 (PB161559)

59 (PBI61560)

60 (PBI61561

61 (PBI61562)

62 (PBI61563)

63 (PB161564)

64 (PBI61565)

66 (PBI61567)

67 (PB161568)

68 (PBI61569)

69 (PB161570)

70 (PB161571

71 (PBI61572

72 (PBI61573)

73 (PBI61574)

74 (PB161575)

75 (PBI61576)

76 (PB161577)

77 (PBI61578

78 (PB161579)

79 (PBI61580)

80 (PB161581)

81 (PBI61582

82 PB161583)

83 PB161584

84 (PBI61585)

Price $1.25*

1.25*

1.50*

1.50*

1.50*

1.50*

1.50

1.50 2.25* I.25*

' 2.25*

.50*

.50* 2.50

.50* 2.50*

1.00* 1.75*

1.75*

2.00* 1.00*

.50* 1.00*

1.75

.50*

.75* 1.00*

.75* .75*

.75*

.50* 2.00

.50* 2.25*

2.00* 2.00*

.75*

.75* I.25* 1.00*

.75 1.25*

1.50*

.75*

.50* 4.00*

2.25*

.75* 1.75*

.75* 7.00*

85 (PBI61586)- $7.00*

86 (PBI61587) 2.25

87 PBI61588 1.25*' 88 (PBI61589 2.00*

89 (PBI61590) 1.00*

90 (PB161591) 1.25*

91 (PB161592) .50*

9- ( PB161593) 1.50*

93 (PB161594) 1.50* 94 (PB161595) 2.75*

95 (PB161596) 2.50*

96 ( PB161597 1.75*

97 (PB161598) 1.50*

102 (PBl6l603)-

106 (PBl6l607)-

107 (PBl6l608)- 108 (PBI61609)-

109 (PBl6l6l0V

110 (PBl6l6llj111 (PBl6l6l2)- 112 (PB161613)- 113 (PBl6l6l4

114 (PBI61615)

115 (PB161616)

116 (PBl6l6l7)- 117 (PBl6l6l8)-

118 (PBl6l6l9)- 119 (PBI61620V

121 (PBl6l622). 122 (PB161623)- 123 (PBi6l624)- 124 (PB161625)-

125 (PBl6l626)- 128 (PBl6l629)-

129 (PB161630)-

(PBl6l63l)-

(PBI61632).

(PBl6l633)- (PBI61654

(PB161635)- (PBI61656) 75 2.00* 2.50*

v PBl6l637 1.25 - PB161638

PB161639

(PB161640 PBl6l64l PB161643

PB161644 PB161647

(PBl6l648

148 (PB161649)-

166 (PB181454 - 534 (PB173291)-

2.25*

1.00*

1.25*

.75 2.50*

1.25*

• 75*

.50*

• 50 2.25*
TECHNICAL NOTES --continued

The following Technical Notes and. all subsequent Issuances in this series may he purchased from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C, 20402, at the prices indicated.

Price No. Price No. $0.50

.45

.60 .50

.50 .50

.50 .50

.50

.50

.50 .40

.45

.35

.35 .35

.40 .35

.50

.30 1.00 1.00

.45

.35 .60

.50 .60

.40 .20

.15

.30

.50

.50

.25 1.25

.45 .25

.15

.15

.50 .25

.40

.40 .40

.55

.25

.10 2.00

.30

.25

.25

175

177 178 179

180 181

182

I83 184

185 186 Superseded by TN265

I87 188

190 191 192

193 194

195 196

197 198

199

200 201

202

203

204

205 206-1 & 2 206-3

206-4

206-5

207

208

209 210

211 Vol. I 211 Vol. II

211 Vol. Ill

211 Vol. IV

211 Vol. V

211 Vol. VI

21 4 215 216

217

218

219

220

221 222

223

224 402

$0.30

.75

.20 .75

.15

.50

.15

.25

.50

.15

.20

.4o

.20 .25 1.00

.25

.25 .20

.30

.25

.30

.25 .15

.60

.25

.45

.25

.25

.25 .25

.30 1.50

.15 .20 .30

.50

.45

.60

.65

.60

226—

227—

228- - 229- - 230- - 231 —

232—

233-

234- - 235- - 236-

237-- 238-

240- - 241- - 242- - 243- - 244-

245-

247-

248-

249-- 251-

252- - 253- - 255- - 256- - 257- - 258- - 259- - 260- - 261-

262-

262A- 263-

264-. 265-

266- 267-

269-

270 -: 270- 271-

272- 273-

274-

275- 276-

279-

280-

281-

282- 283- 284-
TECHNICAL NOTES --continued

No. 285 —

286— 287—

288-- 289—

290- - 291- - 300—

301— 302—

303—

304— 305—

306—

307—

Price $0.25

.25 .25

.30 .50

.25 .30

• 50

.55 .60

.25 2.00

.60 .75

.40

No. 308—

309 —

310- 311—

313—

314-

315—

316 —

317—

318-- 319—

321— 322—

323- - 324- -

Prlce $0.50

.60 .30

.30

.45 .55

.25 P.60

.55

.55

.15 .20

.25

.30

No. 325-

326-

327-

328- 329-

330-

331-

332-

333- 354

335- 336-

337-

$0.30

.60

.25

.35

.60

.25

.25

.30 .45

*See Clearinghouse price list for this Technical Note. INDIVIDUAL ISSUES OP THE JOURNAL OP RESEARCH

Section A. Physics and Chemistry

(Issued Bimonthly)

1964 1965

1966

68A- 1 to 68A-6, 70 cents each.

69A-1 to 69A-6, 70 cents each. 70A-1 to 70A-3, $1.00 each. Section B. Mathematics and Mathematical

Physics (Issued Quarterly)

1964: 68B-1 to 68B-4, 75 cents each.

1965: 69B-3 to 69B-4, 75 cents each.

1966: 70B-1 to 70B-2, 75 cents each.

Section C. Engineering and Instrumentation

(Issued Quarterly)

1964: 68C-1 to 68C-4, 75 cents each.

1965: 69C-I to 69C-4, 75 cents each.

1966: 70C-1 to 70C-2, 75 cents each. Section D. Radio Science

(Issued Monthly)

1964: 68D-1 to 68D-12, $1.00 each. 1965: 69D-I; 69D-3; 69D-5 to 69D-12, $1.00 each. BOUND VOLUMES OP THE JOURNAL OP RESEARCH

Jan -Dec. 1962

Jan -Dec. 1963

Jan -Dec. 1964

Jan. -Dec. 1965

Jan -Dec. 1962

Jar- -Dec. 1963

Jan -Dec. 1964

Jan -Dec. 1965

Price -$5.50

- 6.00

- 6.25

- 5.50 - 3.00

- 3.25 - 2.50 - 3-75

Vol. 66C

67C

68C

69C

Jan -Dec . 1962

Jan -Dec. 1963

Jan -Dec

.

1964

Jan -Dec. 1965

Jan -Dec

.

1962

Jan -Dec. 1963

Jan -Dec. 1964

Jan -Dec

.

1965

Price

-$4.00

3-50 3.75

403
5.2. REPRINTS OP ARTICLES BY NBS AUTHORS

TYPE

OP

PAPER

HOW REPRINTS OR COPIES CAN BE OBTAINED

Superintendent

of Documents, Government Printing Office

Clearinghouse2 Author Federal Depository Libraries^

Library of Congress--

Photodu- plication

Service

Original

Journals

Research

Papers^

(J. Research,

Prior to July 1959)

$2.00 hard

copy. Microfische copies

also available

at $.65.

X X

Papers by NBS Authors

in Journal

of Research

(July 1959

to Present)

See footnote 5 X X X

Papers by NBS Authors published in Outside Journals X X X

RESEARCH PAPERS were reprints of individual articles that appeared in Volumes 1-62

of the monthly Journal of Research. These papers were published, numbered, and made available separately. In 1959 NBS began publishing the Journal of Research in separate sections, and RESEARCH PAPERS were discontinued.

Address: Clearinghouse for Federal Scientific and Technical Information, National Bureau of Standards, U.S. Department of Commerce, Springfield, Virginia, 22151. ^Bound volumes or (when available) the individual Journals may be purchased. See price list, page 405. ^Primarily for reference; some libraries are equipped to reproduce copies for a fee.

404
5-3. OUT-OF-PRINT MATERIAL

Those NBS publications not listed in the Price Lists, are out-of-print and are not available from the Superintendent of Documents. Many can be consulted at Libraries.

Also, in many cases, photoduplicated copies can be purchased from the Library of Congress. For full information concerning this service, write to the Photoduplicatlon

Service, Library of Congress, Washington, D. C. 20540. Certain NBS publications are out of print because they have been replaced, or partially replaced, by material issued by other organizations. In this connection, NBS is able to offer the following information. Circular 410, National Standard Petroleum Oil Tables . Information in this Circular has been incorporated In the ASTM-IP Petroleum Measurement Tables issued by the American

Society for Testing and Materials, 1916 Race Street, Philadelphia, Pa., 19103. Available

at $8.75 ($6.50 to ASTM members). Tables 5 and 7 of the ASTM-IP Tables may also be purchased from the ASTM in separate reprint form at $1.50 a copy for the two tables. Circular 438, Static Electricity . The National Fire Protection Association, 60 Battery- march Street, Boston, Mass., 02110, has issued a publication by the same title, available

from them as NFPA Publication 77M, at $1.00. Circular 464, Gas Calorimeter Tables . The American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pa., 19103, has issued a publication on this subject. Listed as ASTM D900-55, it can be ordered at 75 cents per copy. Circular 499, Nuclear Data . The publication of nuclear data is being continued in a new .journal entitled Nuclear Data , published by Academic Press, 111 Fifth Avenue, New

York, N. Y. , 10003. Circular 564, Tables of Thermal Properties of Gases . A reprinted edition is available

from Pergamon Press of London and New York, at $20.00. The chapter on Nitrogen by Voolley was reissued as NACA Technical Note 3271 (March 1956) and the chapter on Steam

by Fano, Hubbell, and Beckett was reissued as NACA Technical Note 3273 (August 1956). Information on these two Technical Notes may be obtained from the Office of Technical

Information, National Aeronautics and Space Agency, 1520 H Street, N. W., Washington,

D. C, 20546. Circular 576, Automotive Antifreezes . For information on this subject consult United

States of America Standards Institute, 10 East 40th Street, New York, N. Y., 10016. Circular 577. Energy Loss and Range of Electrons and Positrons and Supplement . These

have been superseded by NASA Special Publication 3012, available from the Clearinghouse

for Federal Scientific and Technical Information, Springfield, Va., 22151, at $4.00 a copy. Circular 579, Underground Corrosion . Now available as PBI68350 from the Clearinghouse

for Federal Scientific and Technical Information, Springfield, Va., 22151, at $6.00 hard copy and' $1.25, microfische. Miscellaneous Publication 179. American Standard Building Code Requirements for Minimum

Design Loads In Buildings and Other Structures . United States of America Standards

Institute, 10 East 40th Street, New York, N. Y., 10016, has Issued a publication on this subject. Available from them as A58. 1-1955, at $2.50. Miscellaneous Publication 187, Directory of Commercial and College Laboratories . A

new Directory of College and Commercial Testing Laboratories is published by the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pa., 19103,

at $1.50. Handbook 46, Code for Protection Against Lightning . A United States of America Stan- dards Institute Code for Protection Against Lightning (NFPA No. 78-1963) is available

from United States of America Standards Institute, 10 East 40th Street, New York, N. Y., 10016, at 75 cents. Handbook 49. Recommendations for Waste Disposal of Phosphorus-32 and Iodlne-131 for Medical Users . Reprints of this Handbook can be purchased at $.40 per copy from NCRP

Publications, Post Office Box 4867, Washington, D. C, 20008. Handbook 71. Specifications for Dry Cells and Batteries . For more information on this Handbook, write to United States of America Standards Institute, 10 East 40th Street, New York, N. Y., 10016. Handbook 76, Medical X-ray Protection Up to Three Million Volts . Reprints of this Hand- book can be purchased at $.50 per copy from NCRP Publications, Post Office Box 4867, Washington, D. C, 20008. 405
6. INDEXES

6.1. HOW TO USE THE INDEXES

The index symbols used In the author and subject indexes are explained In the following three tables. These tables also give the pages on which the abstracts of

the publications, or the listing of titles of papers begin. Table A

NBS Index Page Nonperiodical Series Symbol Number Circulars C 199 Monographs Mono 199

.

Handbooks H 213 Miscellaneous

Publications M 218 Applied Mathematics

Series AMS 227 National Standard Reference Data Series NSRDS 227 Building Science Series BSS 228

Commercial Standards CS 250 Simplified Practice Recommendations SPR 233

Technical Notes TN 234

NBS

Journal of Research

Index Symbol

Issue Date

J64

J64

J64 J65

J65

J65 J65

J65 J65

J66

J66 J66

J66

J66

J66

J67

J67 J67

J67

J67 J67 J68

J68

J68 J68

J68

J68

J69

J69

J69 J69

J69

J69

J70

J70 J70

July-August i960 September-October i960 November-December i960 January-February 1961 March-April 196l May-June 1961 July-August 1961 September-October 1961 November-December 1961 January -February 1962 March-April 1962 May-June 1962

July -August 1962 September-October 1962 November- Dec ember 1962 January-February 19§3 March-April 1963 May-June 1963

July-August 1963 September-October 1963 November-December 1963 January -February 1964 March-April 1964 May-June 1964 July-August 1964 September-October 1964 November-December 1964 January-February 19§5 March-April 1965 May-June 1965

July -August 1965 September-October 1965 November-December 1965 January -February 1966 March-April 1966 May-June 1966

406
Table B--continued

NBS Journal Researc

of

: Index

Symbol

Issue Date Number

Vol

.

Sect. No

.

J64 B 3 July-September i960 61

J64 B 4 61 J65 B 1 January"Mar0^1961^^ 62 J65 B 2 April-June 196l 62 J65 B 3 O^^b^^DeTM'"'

6^ ^196l

63

J65 B i 6h J66 B 1 January March 1962 65 J66 B 2 April-June 1962 65

J66 B 3 July —September 1962 66

J66 B i 66

J67 B 1 January

_ March'

:) 1963^^^ 67 Section B J67 B 2 April-June 1963 eh

J67 B 3 July— September 1963 68

J67 B i 69 J68 B 1 January—March. 1964 69 J68 B 2 April-June 1964 70 J68 B 3 71 J68 B 4 October —December 1964 72 J69

J69 B 1&2 January-June 1965

11 B 3 July- September 1965

J69 B 1 October-December 1965 76

J70 B 1 J70 B 2 April-June 1966 U

J64 C 3 July — September i960 80

J64 c October—December i960 80 J65 c 1 82 J65 C 2 April-June 1961 83

J65 C 3 July— September 1961 iJ

J65 C i October—December 196l 85 J66 c 1 January —March 1962 87 J66 C 2 April-June 1962 86

J66 C 3 July-September 1962 89 J66 c October—December 1962 91 J67 c 1 Q3

Section Ci J67 c 2 April -June 1963^

^ 94

J67 c 3 July —September 1963 95

J67 c 4 97 J68 c 1 January-Marc h^l964^^^ 98

J68 c 2 April-June 1964 99 J68 c July-September 1964 100 J68 c October—December 1964 101

J69 c 1 January-March 1965 103

J69 c 2 April-June 1965 105

J69 c 3 July-September 1965 106

J69 c 4 October—December 1965 107

J70 c 1 January—March 1966 108

J70 c 2 April-June 1966 109 J64 D 4 July-August i960 112 J64 D 5 September —October i960 114

J64 D s November-December i960 117 J65 D 1 January—February 196l 118 J65 D 2 March-April I96I 120 Section D J65 D 3 May-June 196l 121 J65 D 4 July-August 1961 124

J65 D 5 125 J65 D 6 November-December 1961 127 J66 D 1 January-February 1962 129 J66 D 2 March-April 1962 131 J66 D 3 May-June 1962 132

J66 D 4 July-August 1962 134

407
Table B—continued

NBS

Journal of Index Issue Date Page

Research. Symbol Number

Vol. Sect

.

No

.

Job D

1

0oep"cemDer— 4- v. nuc 4-uouer k m£o ±yO{z c J66 D 0 Q J67 D 1 Januar^Fe^ruary^l^lf^ i lin J67 D 2 March-April 1963 i Jit J67 D

I May-June 1963 144

J67 D 4 0T11LL±y 1 \t——.HUgUb Ai i en i q+" 1 Qf~i"*i

lj _LyuJ? 145

J67 D 5 September-October 1963 D 6 rJovember— December iyo^ 14o J68 D 1 January 1964 150 J68 D 2 February 1964 153

J68 D

I March 1964 155

J68 D 4 iipri± xyo^ J68 D iMqv viay "1 Qf^iii" • iS150 J68 D 0 J68 D 1 ou±y -Lycf I?! Section D- J68 D 0 fVUgUSTj lyO^r 153

J68 D 9 oepuoiijucx i^uh l64

J68 D 10 October 1964 166

J68 D 11 November 1964 168 J68 D 12 jjecemoer -lycr 170

J69 D 1 January 1965 171

J69 D 2 February 1965 174

J69 D

1 March 1965 176

J69 D 4 >ipi ±x _Lyup J69 D iviay ±yo_) 1^2

J69 D 1 June 1965 iR"^ J69 D

1

July J-yco l8

J69 D August 1965 l8^

J69 D 9 September 1965 190

J69 D 10 October 1965 192

J69 D 11 November 19§5 194

J69 D 12 December 1965 195

Table C NBS Papers Published by Others

(1960-1965)

Index Symbol Page Number Professional Journals,

Books, Book Chapters, Proceedings, etc. Four-digit numbers, 3116 through 9149. 274

408
6.2. AUTHORS INDEX

A

Abbott, R. L., (1960) TN80 (PB161581) ; 9139. Abbott, R. L., Bean, B. R., West-water, E. R., 8950. Abeles, F., (1965) M256, p. 41. Abom, C. J., Reder, F. H., Winkler, G. M. R., J 68D3-342,

275 (1964). Abraham, L. G., Jr., J 69D7-532, 977 (1965). Abraham, L. G., Jr., Bradshaw, J. A., J 65D2-113, 155

(1961) . Abramowitz, M., (1964) AMS55, pp. 9, 495, 537. Abramowitz, M., Call, D. H., Mathews, J. C., 954A. Abramowitz, M., Stegun, I. A., Editors, (1964) AMS55.

Abramowitz, S., Bass, A. M., Ledford, A. E., Jr., 6605. Abramowitz, S., Broida, H. P., J 68A3-281, 331 (1964) ; 5516; 6528. Abramowitz, S., Comeford, J. J., 6754. Abramowitz, S., Comford, J. J., Levin, I. W., 6818. Abramowitz, S., Levin, I. W., 6760. Achenbach, P. R., 3320; 4521; 4570; 4756; 5068; 5891. Achenbach, P. R., Coblentz, C. W., 5359. Achenbach, P. R., Davis, J. C, 4635; 4828; 5256A; 6597. Achenbach, P. R., Davis, J. C, Faison, T. K., 8944. Achenbach, P. R., Davis, J. C, Smith, W. T., (1962) Mono.51. Achenbach, P. R., Drapeau, F. J. J., Phillips, C. W., 3532; 4322; 4637. Achenbach, P. R., Faison, T. K., Davis, J. C, J 70C1-218,

25 (1966). Achenbach, P. R., Kusnda, T., 6236. Achenbach, P. R., Kusuda, T., Drapeau, F. J. J., 4743. Achenbach, P. R., Phillips, C. W., 3229; 5439A. Achenbach, P. R., Phillips, C. W., Goodard, W. F., Jr., 3570; 3394. Achenbach, P. R., Phillips, C. W., Goddard, W. F., Johnson, H. D., Penney, R. W., 3395. Achenbach, P. R., Phillips, C. W., Penney, R. W., 6859. Achenbach, P. R., Phillips, C. W., Smith, W. T., 6111A. Achhammer, B. G., Bersch, C. F., Stromberg, R. R., 3319. Achhammer, B. G., Krasnansky , V. J., Parker, M. S., 4048. Achhammer, B. G., Parker, M. S., Krasnansky, V. J., 6012. Acquista, N., Mann, D. E., Thrush, B. A., Lide, D. R., Ball, J. J., 4304. Acquista, N., Porter, T. L., Mann, D. E., 6735. Acton, L., 4301. Adachi, S., J 69D4-485, 493 (1965)

.

Adachi, S., Mushiake, Y., J 69D2-451, 171 (1965). Adams, L. H., Waxier, R. H., J 65A4-112, 283 (1961) ; J 69C2-190, 103 (1965). Agar, D., Plyler, E. K., Tidwell, E. D., J 66A3-161, 259

(1962) . Agranoff, B. W., Seliger, H. H., 3302. Agy, V., 3785; 4381; 4845. Agy, V., Baker, D. M., Jones, R. M., (1965) TN306.

Agy, V., Davies, K., 4413; 5314. Agy, V., Davies, K., Salaman, R., J 65D1-100, 35 (1961). Agy, V., Zacharisen, D. H., 3914.

Ailor, W. H., Jr., Reinhart, F. M., 5731. Aitken, A., Taylor, H. F. W., (1962) Paper III-S6, Mono.43, Vol. I, p. 285. Aitken, J. H., DeLaVergne, R., Henry, W. H., Loftus,

T. P., 4538. Aiya, S. V. C, Lakshminarayan, K. N., J 69D10-569,

1351 (1965).

Akasofu, S. C, J 69D3-471, 361 (1965)

.

Akima, H., (1963) TN167; 4997; 5658; 5751; 5812;

6446; 8918. Akimoto, H., Hampson, R. F., Jr., McNesby, J. R., Tanaka, I., 6204. Aldrich, J. M., (1963) M248, p. 209. Alexander, R. B., Smith, L. L., 5480. Alexander, S. N., 3892; 3941; 4541; 5010; 6438. Alexander, S. N., Doyle, P. E., 6649. Alexander, S. N., Karlin, J. E., 4532. Alexander, S. N., Leiner, A. L., 1159A.

Allan, D. W., Barnes, J. A., 6013A.

Allan, D. W., Barnes, J. A., Andrews, D. H., 9087A.

Allan, D. W., Barnes, J. A., Wainwright, A. E., 4979. Allcock, G. M., J 68D11-425, 1225 (1964).

Allcock, G. M., Crombie, D. D., McNeill, F. A., 5844. Allen, C. W., Corliss, C. H., 5173; 5175.

Allen, G. F., Bates, R. G., J 64A4-56, 343 (1960).

Allen, G. F., Robinson, R. A., Bower, V. E., 5013.

Allen, H. C, Jr., 4379.

Allen, H. C, Jr., Cross, P. C, 5493. Allen, H. C, Jr., Kokoszka, G. F., Gordon, G., 6732;

6733. Allen, H. C, Jr., Kokoszka, G. F., Inskeep, R. G., 6443. Allen, H. C, Jr., Olson, W. B., J 67A4-226, 359 (1963) ; 4956; 5124.

Allen, H. C, Jr., Olson, W. B., Plyer, E. K., J 67A1-191,

27 (1963).

Allen, H. C, Jr., Plyler, E. K., 3203. Allen, H. C, Jr., Reimann, C. W., Kokoszka, G. F., J 70A1-380, 1 (1966).

Alley, C. O., Bender, P. L., Dicke, R. H., Faller, J. E., Plotkin, H. H., Wilkinson, D. T., 8927.

Allison, J., Karp, A., J 68D5-365, 663 (1964).

Allisy, A., Pruitt, J. S., Joyet, G., Pohlit, W., Tubiana,

M., Zupancic, C, J 66C2-91, 107 (1962).

Allisy, A., Wyckoff, H. 0., Aston, G. H., Barnerd, G. P., Hubner, W., Loftus, T., Taupon, G., 5416. Allred, C. M., J 66C4-108, 323 (1962).

Allred, C. M., Arthur, A. G., Cannon, M. K., 5882A.

Allred, C. M., Cook, C. C, J 64C3-40, 225 (1960) ; 3390. Allred, C. M., Lawton, R. A., 6305. Aimer, H. E., J 64C4-47, 281 (1960)

.

Aimer, H. E., Bowman, H. A., J 67C3-133, 227 (1963). Aimer, H. E., Bowman, H. A., Jensen, M. W., Macurdy,

L. B., Reiser, H. S., Wasko, B., J 68C-159, 141

(1964). Aimer, H. E., Macurdy, L. B., Peiser, H. S., Week, E. A., J 66C1-85, 33 (1962). Alspach, W. J., Flynn, T. M., 6656.

Alt, F. L., (1966) TN290; 253A; 254A; 3854; 4585;

4655; 4904; 6479; 6860; 9023.

Alt, F. L., Rhodes, I., J 66B2-71, 47 (1962) ; 4266A. Altman, C, J 69D4-487, 511 (1965). Alvarez, R., Flitsch, R., (1965) M260-5.

Alvarez, R., Michaelis, R. E., Kilday, B. A., J 65C1-57,

71 (1961). Ambler, E., 3640; 3772; 5519. Ambler, E., Dove, R. B., 4015. Ambler, E., Dove, R. B., Kaeser, R. S., 5134. Ambler, E., Fuller, E. G., Marshak, H., 6699. Ambler, E., Hoppes, D. D., Hayward, R. W., Kaeser, R.

S., 4164. Ambler, E., Plumb H., 3897. Ambler, E., Schooley, J. F., Eisenstein, J., 5091; 5092. Ambler, E., Schooley, J. F., Hosier, W. R., Becker, J. H., Cohen, M. L., Koonce, C. S., 6682. 409
Ambrose, J. R., Johnson, W. H., J 67A5-231, 247 (1963). Ambs, W. J., Kruger, J., 3275; 3742. Amelinckx , S., Delavignctte, P., Kirkpatrick, H. B., 4041. Amelinckx, S., Kirkpatrick, H. B., 4578. Anient, W. S., J 68D4-359, 451 (1964). Ament, W. S., Katzin, J. C, Katzin, M., Koo, B. Y-C,

J 68D4-355, 379 (1964). Ames, J., J 68D12-435, 1309 (1964). Ames, L. L., White, D., Mann, D. E., 5407. Amey, W., (1963) M248, p. 249. Amster, A. B., Gross, D., 5077. Anderson, H. C, Oppenheim, I., Shuler, K. E., Weiss,

G. H., 6056. Andersen, H. C., Shuler, K. E., Oppenheim, I., Weiss,

G. H., 6224. Andersen, J. B., J 67D3-266, 325 (1963). Andersen, K., Shuler, K. E., 6259. Andersen, K. Shuler, K. E., Weiss, G. H., 4950. Anderson, J. N., Paffenbarger, G. C, 4865. Anderson, M. M., 5830. Anderson, M. V., Zimmerer, R. W., Beers, Y'., Strine, G. L., 5490. Anderson, M. V., Zimmerer, R. W'., Stringe, G. L., Beers,

Y., 4775. Anderson, R., Marden, E., Marron, B., (1966) TN285.

Anderson, R. L., Guildner, L. A., 6870. Anderson, R. L., Parker, R. L., Hardy, S. C., 5378. Anderson, R. M., Gerks, I. H., J 68D11-420, 1193 (1964). Anderson, W. L., J 66D1-174, 63 (1962) ; J 67D1-243, 63 (1963). Andrew, K. L., Kaufman, V., 4672. Andrews, D. H., 6176; 6837A. Andrews, D. H., Barnes, J. A., Allen, D. W., 9087A. Andrews, D. H., Morgan A. H., 4175. Anicin, B. A., J 69D5-507, 721 (1965). Anscombe, F. J., Barron, B. A., J 70B2-174, 141 (1966). Anson, W. J., J 65C4-74, 217 (1961). Anson, W. J., Beatty, R. W., (1960) TN72 (PB161573) ; 4496. Anson, W. J., Beatty, R. W., Engen, G. F., 3629. Anson, W. J., Niesen, E., 4652. Anspach, S. C., Cavallo, L. M., Garfinkel, S. B., Hutchinson, J. M. R., Smith, C. N., (1965) M260-9.

Antonucci, J. M., Wall, A., 5723. Antonucci, J. M., Wall, L. A., Pummer, W. J., Fearn,

J. E., J 67A5-237, 481 (1963). Antonucci, J. M., Wall, L. A., Straus, S., Tryon, M.,

4025. Antosiewicz, H. A., (1964) AMS55, p. 435; 2647A.

Anivay, A. C., J 67D2-251, 153 (1963). Appel, W. D., 2264A.

Appleton, W. H., Cullen, W. C, 5310. Archer, R. J., (1964) M256, p. 255. Argentar, H., Brauer, G. M., Durany, G., J 68A6-309,

619 (1964). Arms R. J., Hama, F. R., 6832 Arms, R. J., Pipberger, H. V., Stallman, W. F., 3982. Armstrong, G. T., 4661; 5115; 5940; 6432; 6503; 6640. Armstrong, G. T. Domalski, E. S., J 69A2-335, 137

(1965). Armstrong, G. T., Fano, L., Jessup, R. S., Marantz, S., Mears, T. W., Walker, J. A., 4785. Armstrong, G. T., King, R. C., J 68A6-315, 661 (1964). Armstrong, G. T., Krieger, L. A., 4678. Armstrong, G. T., Marantz, S., 3835; 5382. Armstrong, G. T., Marantz, S., Coyle, C. F., 3228. Arnett, R. W., 4804. Arnett, R. W., Millhiser, D. R., 6572. Arnett, R. W., Millhiser, D. R., Probert, W. H., 5346. Ami, H. T., 5994. Ami, H. T., Blaine, R. L., (1966) BSS5, Part 2, Sections

5 and 6; 4071. Ami, H. T., Blaine, R. L., Clevengcr, R. A., (1965) BSS2, Part 1, Section 2. Ami, H. T., Blaine, R. L., Evans, D. N., (1966) BSS5,

Part 2, Section 4.

Ami, H. T., Blaine, R. L., Foster, B. E., (1965) BSS2,

Part 1, Section 1. Arnold, B. L., (1961) M240.

Arnold, H. R., J 68D2-335, 215 (1964). Arnold, H. R., Pierce, E. T., J 68D7-374, 771 (1964). Arnold, R. G., Deitz, V. R., Carpenter, F. G., 6145. Arnoldy, R. L., Winckler, J. R., J 68D5-363, 619 (1964). Arnovick, G. N., (1965), Misc. Publ. 269, p. 181. Arp, V. D., Cline, D., Kropschot, R. H., Wilson, J. H.,

5041. Arp, V., Harden, J. L., 5771. Arp, V. D., Kropschot, R. H. 4288; 4328; 4329; 4679. Arp, V. D., Kropschot, R., Craig, T. S., 5011. Arp, V. D., Kropschot, R. H., Wilson, J. H., Love, W. F., Phelna, R., 4331. Arp, V. D., Wilson, J. H., Winrich, L., Sikora, P., 5074. Arthur, M. G., Allred, C. M., Cannon, M. K., 5882A.

Arthur, M. G., Randall, M. W., (1962) TN160.

Astin, A. V., 587A; 842A; 871; 1866A: 2769; 3151 A;

3236; 3337; 3348; 3702; 3712A; 3815; 3912A;

4228; 4836; 4925; 4983A.

Astin, A. V., Wildhack, W. A., 1741A.

Aston, G. H., Wycoff, H. 0., Allisy, A., Bamerd, G. P., Hubner, W., Loftus, T., Taupin, G., 5416. Athay, R. G., Johnson, H. R., 3830.

Athai/, R. G., Warwick, C. S., 4121. Atkinson, W., Hudson, G. E., 5539; 5790. Atkinson, W. R., Beehler, R. E., Heim, L. E., Snider,

C. S., 4416. Atkinson, W. R., Bonanomi, J., Kartaschoff, P. Newman, L. J., 5868. Atkinson, W. R., Fey, L., Newman, J., 5131; 5683; 5955; 6237. Atlas, D., J 69D6-519, 871 (1965). A,onan, R. ./., and Kruskal, J. B., 3142A.

Aurivillius, B., Fang, P. H., 4653.

Aurivillius, B., Fang, P. H., Robbins, C. R., 4654. Ausloos, P. J., 4132; 4350. Ausloos, P. J., Borkowski, R., 4131; 5065; 5374; 5375;

6120. Ausloos, P. J., Carmichael, H. H., Gordon, R., Jr., 6713. Ausloos, P. J., Doepker, R. D., 6770; 8940; 9080. Ausloos, P. J., Gorden, R., Jr., J 69A2-330, 79 (1965) ; 4405; 4685; 6007. Ausloos, P. J., Gorden, R., Jr., Lias, S. G., 6009. Ausloos, P. J., Lias, S. G., 4670; 5066; 5114; 5624; 6100; 6319; 6776. Ausloos, P. J., Lias, S. G., Gorden, R., Jr., 5307; 6005. Ausloos, P. J., Lias, S. G., Sandoval, I. B., 5758; 6448. Ausloos, P. J., Murad, E., 4353. Ausloos, P. J., Rebbert, R. E., 4183; 4711; 5032; 5253; 5424; 5787; 6286; 6472; 6513; 8967; 8968. Ausloos, P. J., Rebbert, R. E., Lias, S. G., 6696. Ausloos, P. J., Sandoval, I. B., 5625. Ausloos, P. J., Stief, L., 4404; 4876. Austing, R. H., J 69B4-160, 313 (1965). Autermann, J. L., (1962) TN165; 5637. Axilrod, B. M., 5245. Axton, E. J., J 67A3-206, 215 (1963).

B Babushkin, W. I., Mchedlov-Petrosyan, 0. P., (1962) Paper IV-S9, Mono.43, Vol. I, p. 533. Bach, R. I., Hubbell, J. H., Herbolt, R. J., J 65C4-78, 249 (1961). Bachynski, M. P., J 69D4-63, 311 (1960); J 69D2-449,

147 (1965). Bachynski, M. P., Neugebauer, H. E. J., J 64D4-64, 317

(I960). Bacon, C. M., Koenig, H. E., (1965) Misc. Publ. 267, Paper 2, p. 11. Bagg, T. C, 5786. Bagg, T. C, Pike, J. L., 5039.

!><,„„, T. C. Stevens, M. E., (1962) TN157.

Bahar, E., Maley, S. W'., J 68D1-314, 35 (1964). Bahar, E., Wait, J. R., J 69D11-578, 1445 (1965). 410
Baih'i/, D. A., 413i>: 4989 ; 5089; (5293. Bailey, D. A'., Cottony, H. V., Kirby, R. C, Norton, K. A., Slid:, R. J.. Davis, R. M., Merrill, R. G., Bailey, D. A"., Bailey, D. A"., Bailey, D. A"., tntz, M. A., 3823; 8989.

?. C. Lehibach, H., 6253.

Battey, 5. ,1/.. Bruck, S. D.. J 66A2-151, 185 (1962).

Bailey, S. M., Wagman, D.D., Evans, W. H., Halow, I., Parker, V. B., Schumm, R. H., (1965) TN270-1;

(1966) TN270-2.

Bailey, V. A., J 65D4-135, 67 (1961); J 68D12-437,

1325 (1964) ; J 69D1-439, 9 (1965). Bain, W. C. J 65D3-123, 229 (1961). Baird, R. C, 5367. Baird, R. C, Neivell, A. C, 6576A.

Baker, D. M., (1965) TN326.

Baker, D. M., Agy, V., Jones, R. M., (1965) TN306.

Baker, D. M., Davics, K., 6815. Baker, D. W., Shafer, M. R., Benson, K. R., J 69C4-212, 307 (1965). Baker, F. B., (1965) Misc. Publ. 269, p. 149. Balakrishnan, A. B., J 68D9-395, 953 (1964).

Ball, J. J., Mann, D. E., Thrush, B. A., Lide, D. R., Acquista, N., 4304. Ballard, D. B., 4401. Ballard, D. B., Nesh, F., 5329. Ballard, J. R., Wacker, P. F., Mizushima, M., Peterson,

J. D.t (1964) Mono.70, Vol. I. Balmain, K. G., J 69D4-491, 559 (1965).

Balser, M., Smith, W. B., J 66D6-232, 721 (1962).

Balser, M., Wagner, C. A., J 64D4-76, 415 (1960).

Balsley, B. B., 6055; 9014.

Balsley, B. B., Bowles, K. L., Cohen, R., 5356.

Balsley, B. B., Bowles, K. L., Cohen, R. S., Ochs, G. R., 3736. Baltzer, O. J., Morgan, A. H., J 68D11-423, 1219

(1964). Bamberger, E. C, Bussey, H. E., Gray, J. E., Rushton,

E., Russell, G., Petley, B. W., Morris, D., 6149. Bandyopadhay, P., Ochs, G. R., Farley, D. T., Jr., Bowles, K. L., 5528. Bandyopadhyay, P., Montes, H., J 68D11-427, 1237

(1964). Bandy, W. C, 6674. Banerjea, B. K., J 69D9-563, 1285 (1965) ; J 69D9-564, 1297 (1965). Banerjee, M. K., Levinson, C. A., Meshkov, S., 5219. Barber, D. J., 6672; 6729; 8986. Barber, D. J., Farabaugh, E. N., 6701. Barber, D. J., Gower, F. R., J 69D12-592, 1563 (1965). Barber, D. J., Tighe, N. J., J 69A3-346, 271 (1965)

;

6730. Barbier, D., Roach, F. E., Ducan, R. A., 4797. Barbier, D. Roach, F. E., Steiger, W. R., J 66D2-181,

145 (1962). Barbrow, L. E., 3251. Bardwell, G. E., Crow, E. L., 5895; 6744.

Barfield, R. N., Brown, N. L., 3762.

Bargeliotes, P. C, Tyras, G., Hamm, J. M., Schell, R. R., J 69D6-516, 839 (1965). Barger, R. L., Broida, H. P., 4469; 4815; 9024; 9025. Barger, R. L., Broida, H. P., Estin, A. J., 4608. Barger, R. L., Broida, H. P., Estin, A. J., Radford, H. E., 4818. Barger, R. L., Kessler, K. G., 3485; 3757; 4141. Barger, R. L., Kessler, K. G., Schweitzer, W. G., Jr., 3636A. Barghausen, A. F., Barsis, A. P., Kirby, R. S., 5711. Barghausen, A. F., Guiraud, F. O., McGavin, R. E., Muhahata, S., Wilber, R. W., (1963) TN103.

Barghausen, A. F., Jacobs, G., Lillie, D., 5385. Barghausen, A. F., Lillie, D. A., 9017A. Barghausen, A. F., McGavin, R. E., 3344. Barghausen, A. F., Norton, K. A., Herbstreit, J. W.,

Janes, H. B., Hornbcrg, K. 0., Peterson, C. F., Johnson, W. E., Wells, P. I. Thompson, M. C, Jr.,

Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.

Barqhauscn, A. F., Peterson,' C. F., 4217. Barkas, W. H., Bcrger, M. J., 6421. Barker, V. S., 4390. Barloutaud, M., Caswell, R. S., Gastebois, J., de Pinho, A. G., Quidort, J., 6334. Barnerd, G. P., Wyckoff, H. 0., Allisy, A., Aston, G. H., Hubner, W., Loftus, T., Taupin, G., 5416. Barnes, J. A., Allan, D. W., 6013A.

Barnes, J. A., Allan, D. W., Wainwright, A. E., 4979. Barnes, J. A., Andrews, D. H., Allen, D. W., 9087A.

Barnes, J. A., Fey, R. L., 5719. Barnes, J. A., Heim, L. E. 3930. Barnes, J. A., Mockler, R. C, 3856; 9088. Barnes, J. A., Mockler, R. C, Beehler, R. E., 3424. Barnes, J. A., Morgan, A. H., 3299. Barnes, J. A., Wright, J. W., Golomb, D., Rosenberg, N. W., 6079. Barnes, M. W., Noyce, R. H., 4122. Barnes, M. W., Ruthberg, S., Noyce, R. H., J 67A4-220,

309 (1963) ; 5185. Barnes, R. A., Golomb, D., Rosenberg, N. W., Wright,

J. W., 6078. Barnes, R. F., Jr., (1965) M269, p. 159. Bamett, M., Wait, S. C, 3817. Bamhart, H. D., Richardson, S. C, (1963) M248, p. 153. Barone, J. J., Huff, R. L., Dickson, G., 4334. Barone, J. J., Forziati, A. F., Kumpula, J., 5826. Barret, E. P., Schwer, F. W., Loebenstein, W. V., 3196. Barrett, A. H., J 69D12-593, 1563 (1965). Barrett, M. A., (1964) M256, p. 213. Barrick, P. L., Hiza, M. J., 4021. Barrington, R. E., Belrose, J. S., J 69D1-443, 69 (1965). Barrone, B. A., Anscombe, F. J., J 70B2-174, 141

(1966). Barrows, E. C, 5265; 5560; 5643. Barrows, E. C, Norton, K. A., Thompson, M. C, Jr., Janes, H. B., 5117. Barsis, A. P., Barghausen, A. F., Kirby, R. S., 5711. Barsis, A. P., Johnson, M. E., J 66D6-227, 681 (1962) ; (1961) TN88 (PB161589).

Barsis, A. P., Kirby, R. S., J 65D5-149, 437 (1961);

4407. Barsis, A. P., Norton, K. A., Rice, P. L., 4853; 4854;

5585. Barsis, A. P., Norton, K. A., Rice, P. L., Elder, P. H.

(1961) TN102 (PB161603).

Barsis, A. P., Rice, P. L., Longley, A. G., Norton, K. A.

(1965) TN101, Vol. 1 & 2. Bartky, I. R., Bass, A. M., 9001. Bartky, I. R., Simmons, J. D., Bass, A. M., 9131. Barut, A. O., 5963. Basharinov, A. E., Kutuza, B. G., J 69D12-601, 1580

(1965). Bass, A. M., 6428. Bass, A. M., Abramowitz, S., Ledford, A. E., Jr., 6605. Bass, A. M., Bartky, I. R., 9001. Bass, A. M., Broida, H. P., J 67A4-228, 379 (1963) ; (1961) Mono.24; 3546; 6523. Bass, A. M., Dhumwad, R. K., 5136. Bass, A. M., Garvin, D., 4489; 6249. Bass, A. M., Kessler, K. G., 3240. Bass, A. M., Keubler, N. A., Nelson, L. S. 6238. Bass, A. M., Kiess, N. H., 1184A.

Bass, A. M., Kostkowski, H. J., 4590. Bass, A. M., Mann, D. E., 4468. Bass, A. M., Milligan, D. E., Jacox, M. E., 6850. Bass, A. M., Milligan, D. E., Jacox, M. E., Comeford,

J. J., Mann, D. E., 6852. Bass, A. M., Moyer, J. W., 3215. Bass, A. M., Simmons, J. D., Bartky, I. R., 9131. Bateman, J. B., (1964) M256, p. 297. Batcman, R., Finney, J. W., Smith, E. A'., Tveten, L. H., Watts, J. M., 3362. Bates, A. A., 5964. 411
Bates, H. F., J 69D8-551, 1195 (1965). Bates, R. G., J 66A2-150, 179 (1962); TN271; 362A; 526A; 1010A; 1066A; 1697A; 3163; 3198; 3520;

3967; 4057; 4243; 4354; 5985; 6579. Bates, R. G., Allen, G. F., J 64A4-56, 343 (1960). Bates, R. G., Bower, V. E., 5339; 5772. Bates, R. G., Bower, V. E., Canham, R. G., Prue, J. E., Bates, R. G., Bower, V. E., Paabo, M., J 65A3-110, 267

(1961) ; 3939. Bates, R. G., Datta, S. P., Grzybowski, A. K., 6359. Bates, R. G., Gary, R., J 65A6-132, 495 (1961). Safes, R. G., Gary, R., Robinson, R. A., 6360; 6506;

6704. Bates, R. G., Guggenheim, E. A., 3751. Bates, R. G., Hetzer, H. B., J 64A5-66, 427 (1960);

3959; 4042; 4601. Bates, R. G., Hetzer, H. B., Robinson, R. A., 4600; 4936; 5299; 6504. Bates, R. G., Kolthoff, I. M., Bruckenstein, S., 6578. Bates, R. G., Ong, K. C, Robinson, R. A., 6155. Bates, R. G., Paabo, M., Robinson, R. A., J 67A6-242,

573 (1963); 5423; 6390; 6705; 8987; 9036. Bates, R. G., Robinson, R. A., 4709. Bates, R. G., Robinson, R. A., Bower, V. E., J 66A1-142,

71 (1962). Bates, R. G., Rosenthal, D., 5689. Bates, R. G., Rosenthal, D., Hetzer, H. B., 6356. Bates, R. G., Sager, E. E., Robinson, R. A., J 68A3-277, 305 (1964). Bates, R. G., Schwarzenbach, G., 988A.

Bates, R. r..

f Smith, E. R., 135A; 247A; 316A.

Bates, R. G., Vosburgh, W. C, 5971. Bates, R. G., Wolford, R. K., 4724. Bates, R. G., Woodhead, C. M., Paabo, M., Robinson,

R. A., J 69A3-345, 263 (1965) ; 6617. Bauer, S. H., LaVilla, R. E., 5800; 5801. Bauer, S. J. K., J 68D5-363, 597 (1964)

.

Bay, Z., Boyne, H. S., 6489. Bay, Z., Farago, P. S., 5636. Bay, Z., McLernon, F. D., 3124; 6577. Bay, Z., McLernon, F. D., Newman, P. A., J 65C1-53,

51 (1961). Bay, Z., Newman, P. A., 4008. Bay, Z., Newman, P. A., Seliger, H. H., 3958. Bay, Z., Papp, G., 5986; 6689. Bay, Z., Pcarlstcin, R. M., 5171; 5276; 5655. Bay, Z., Seliger, H. H., 3471. Bazer, J., Karp, S. N., J 66D3-200, 319 (1962). Bazley, N. W., 3242. Bazley, N. W., Davis, P. J., J 64B4-36, 211 (1960). Bazley, N. W., Fox, D. W., J 65B2-48, 105 (1961);

J 66B1-67, 1 (1962) ; J 68D4-129, 173 (1964) ; 4157; 4435; 4731. Beale, E. M. L., J 65D3-128, 255 (1961); J 65D3-129,

263 (1961).

Beale, G. E., Jr., Broida, H. P., 3309. Bean, B. L., 5478. Bean, B. L., Disc, J. R., (1961) Mono.28. Bean, B. L., Mulligan, B. W., 9145. Bean, B. R., 3440; 4007; 4011; 5038; 5785; 5930. Bean, B. R., Cahoon, B. A., J 65D1-104, 67 (1961);

4143. Bean, B. R., Dutton, E. J., J 69D6-522, 885 (1965);

(1966) Mono.92; 4010. Bean, B. R., Dutton, E. J., Frank, V. R., Lane, J. A., Sweezy, W. B., 5159. Bean, B. R., Dutton, E. J., Lane, J. A., Sweezy, W. B., J 67D6-293, 605 (1963). Bean, B. R., Dutton, E. J., Westwater, E. R., 5935. Bean, B. R., Fehlhaber, L., Grosskopf, J., J 66D5-219,

593 (1962) ; 4876A.

Bean, B. R., Frank, V. R., Lane, J. A., J 67D6-292, 597 (1963). Bean, B. R., Gallct, R. M., 3140. Bean, B. R., Gilmer, R. O., McGavin, R. E., J 69D9-554, 1213 (1965) ; 6475.

Bean, B. R., Horn, J. D., 4012; 4199. Bean, B. R., Horn, J. D., Ozanich, A. M., Jr., (1960) Mono.22

Bean, B. R., Horn, J. D., Riggs, L. P., (1962) TN98;

3747. Bean, B. R., Lane, J. A., J 67D6-291, 589 (1963). Bean, B. R., McGavin, R. E., 5807; 9101. Bean, B. R., Meaney, F. M., 1491A.

Bean, B. R., Misyne, P., Thayer, G. D., 3652. Bean, B. R., Sweezy, W. B., J 67D2-250, 139 (1963). Bean, B. R., Thayer, G. D., J 67D-262, 273 (1963) ; 3476A; 5250; 6418. Bean, B. R., Thayer, G. D., Cahoon, B. A., J 64D5-84,

487 (1960). Bean, B. R., Westwater, E. R., Abbott, R. L., 8950. Bean, L., Blaine, R. L., Hubbard, E. K., (1965) BSS2,

Part 1, Section 3. Beatty, R. W., J 68D4-352, 349 (1964) ; J 68D5-360,

529 (1964); (1965) Mono.82 ; 3247; 3386; 4022;

4093; 4564; 5425; 5463; 5488; 5872; 6004; 6011; 6139; 6201; 6396; 6573; 6591; 6858; 8975. Beatty, R. W., Anson, W. J., (1960) TN72 (PB161573) ; 4496. Beatty, R. W., Engen, G. F., 3256. Beatty, R. W., Engen, G. F., Anson, W. J., 3629. Beatty, R. W., Kerns, D. M., 6343. Beatty, R. W., Schafer, G. E., J 64C1-43, 13 (1960) ; 5976. Beaty, E. C., 4777. Beaty, E. C., Bender, P. L., 3230A.

Beaty, E. C., Carpenter, R. J., Bender, P. L., Saito, S., Stone, R. O., 3392. Beaty, E. C, Patterson, P. L., 5629; 6870. Beausoliel, R. W., (1963) TN253, p. 1. Bechtoldt, C. J., Ogburn, F., Morris, J. B., DeKoranyi,

A., 9048. Bechtoldt, C. J., Vacher, H. W., 4267. Beck, D. R., Kreith, F., Kropschot, R. H., 5880. Beck, R. L., Douglas, T. B., 5084. Becker, D. A., Okabe, H., 5111; 5841; 6525. Becker, D. A., Okabe, H., McNesby, J. R„ 9127. Becker, J. H., 3761. Becker, J. H., Frederikse, H. P. R., 4622. Becker, J. H., Frederikse, H. P. R., Hosier, W. R., 3524A.

Becker, J. H., Hosier, W. R., 5327; 6876. Becker, J. H., Kahn, A. H., Frederikse, H. P. R., 6026A.

Becker, J. H., Schooley, J. F., Hosier, W. R., Ambler, E., Cohen, M. L., Koonce, C. S., 6682. Becker, W., Ruster, R., Klostcrmeyer, J., J 69D8-541,

1083 (1965). Beckett, C. W., Haar, L., Friedman, A. S., (1961) Mono.20.

Beckett, C. W., Hilsenrath, J., Benedict, W. D., Fano,

L., Hoge, H. J., Masi, J. R., Nuttall, R. L., Touloukian Y. S., Woolley, H. W., 3806. Beckett, C. W., Hilsenrath, J., Green, M. S., 2394A. Bcckmann, P., J 66D3-191, 231 (1962); J 68D9-392,

927 (1964) ; J 69D4-498, 629 (1965). Beckmann, P., Klemperer, W. K., J 69D12-621, 1669

(1965). Bcckmann, P., Mandics, P., J 68D12-430, 1265 (1965);

J 69D4-497, 623 (1965). Beehler, R. E., Atkinson, W. R., Heim, L. E., Snider,

C. S., 4416. Beehler, R. E., Glaze, D. J., 5347. Beehler, R. E., Mockler, R. C, 4189; 6543. Beehler, R. E., Mockler, R. C, Barnes, J. A., 3424. Beehler, R. E., Mockler, R. C, Richardson, J. M., 6626. Beehler, R. E., Mockler, R. C, Snider, C. S. 3375;

3443. Beehler, R. E., Richardson, J. M., Mockler, R. C, Fey,

R. L., 4501. Beers, Y., 6885. Beers, Y., Strine, G. L., 5020. Beers, Y., Treacy, E. B., 5006. 412
Beers, Y., Zimmerer, R. W., Anderson, M. V., Strine, G. L., 4475; 5490. Beery, W. M., Koch, J. W., J 66D3-197, 291 (1962). Behrent, L. F., (1961) TN121 (PB161622) ; (1961) TN123.

Bcich, F. R., Ishimaru, A., J 66D6-235, 775 (1962).

Belcher, H. V., McKinncy, J. E., J 67A1-194, 43 (1963). Belcher, H. V., McKinney, J. E., Marvin, R. S., 3827. Belknap, M. A., Kccgan, H. J., Schleter, J. C, J 67A6-

243, 577 (1963) ; 6337.

Bell, R. K., (1965) M260-7.

Bell, W. E., Collett, L. S., Brant, A. A., Ruddock, K. A., Siegel, H. O., Wait, J. R., 3239A.

Bello, P. A., J 68D10-416, 1161 (1964)

.

Belrose, J. S., Barrington, R. E., J 69D1-443, 69 (1965).

Bclrose, J. S., Bode, L. R., Hewitt, L. W., J 68D12-436,

1319 (1964). Bender, B. K., Goldman, A. J., J 66B3-75, 77 (1962);

J 67B2-94, 77 (1963). Bender, E. W., Ryan, J. V., (1962) Mono.45. Bender, P. L., J 68D5-360, 540 (1964); 3444; 3445; 3631 A; 4537; 5308; 6008; 6153; 6275. Bender, P. L., Alley, C. O., Dicke, R. H., Faller, J. E., Plotkin, H. H., Wilkinson, D. T., 8927. Bender, P. L., Beaty, E. C., 3230A.

Bender, P. L., Carpenter, R. J., Beaty, E. C., Saito, S., Stone, R. O., 3392. Bender, P. L., Owens, J. C., 6660. Benedict, C. M., Earnshaw, K. B., J 66C4-105, 297

(1962). Benedict, C. M., Gates, D. M., 5261. Benedict, W. S., Blaine, L. R., Plyler, E. K., J 66A3-155,

223 (1962). Benedict, W. S., Calfee, R. F., (1966) TN332.

Benedict, W. S., Gates, D. M., Calfee, R. F., Hansen,

D. W., (1964) Mono.71.

Benedict, W. S., Hilsenrath, J., Beckett, C. W., Fano,

L., Hoge, H. J., Masi, J. R., Nuttall, R. L., Touloukian, Y. S., Woolley, H. W., 3806. Benedict, W. S., Plyler, E. K., Tidwell, E. D., 3909; 3910; 4467. Bennett, E. M., Spiegel, J., (1965) M269, p. 47. Bennett, J. A., J 68C2-155, 91 (1964); 4502; 5104;

5343; 6009A; 9073. Bennett, J. A., Frankel, H. E., Carmann, C. M., 3541. Bennett, J. A., Holshouser, W., 4669; 5372. Bennett, J. A., Holshouser, W. L., Utech, H. P., 5761. Bennett, J. A., Quick, G. W., 1404A.

Bennett, J. A., Shives, T. R., 9074. Bennett, L. H., 6009A; 6896; 8957. Bennett, L. H., Budnick, J. I., 3620; 3674. Bennett, L. H., Cotts, R. M., Snodgrass, R. J., 9012. Bennett, L. H., Snodgrass, R. J., 5439; 5517; 5898;

6233. Bennett, L. H., Streever, R. L., 4706; 4795; 5445. Bennett, L. H., Streever, R. L., LaForce, R. C, Day,

G. F., 4794; 5521. Bennett, W. R., Jr., J 68D5-365, 667 (1964). Ben-Reuven, A., 9006; 9119. Benson, K. R., Shafer, M. R., Baker, D. W., J 69C4-212, 307 (1965). Benson, R. F., J 68D2-336, 219 (1964); J 68D10-410,

1109 (1964); J 68D10-411, 1123 (1964). Berendt, R. D., 6124. Berendt, R. D., Schmidt, H. A., Jr., 5157. Berendt, R. D., Waterhouse, R. V., Cook, R. K., 3307. Berendt, R. D., Winzer, G. E., (1964) Mono.77. Berg, H. F., Eckerle, K. L., Burris, R. W., Wiese, W. L., 6344. Berg, H. F., Wiese, W. L., Griem, H. R., 3631; 4170. Berge, G. L., J 69D12-588, 1552 (1965). Berger, E. L., Hefley, G., Doherty, R. H., 3133. Berger, H. W., Cadoff, B. C, J 69C1-187, 67 (1965) ; 9091; 9092. Berger, M. J., (1963) TN187; 5495. Berger, M. J., Barkas, W. H., 6421. Berger, M. J., Fano, U., 4023.

Berger, M. J., Fano, U., Spencer, L. V., 3280. Berger, M. J., Fano, U., Zerby, C. D., 4668. Berger, M. J., Raso, D. J., 3654. Berger, M. J., Seltzer, S. M., 6041; 6043; 6218A; 6420;

9000. Berger, R. T., 4383. Berger, R. T., Herzfeld, C. M., 5536. Berkey, F., Parthasarthy, T. R., J 69D3-479, 415

(1965). Berman, H. A., J 69A1-327, 45 (1965) ; J 69A5-362, 407

(1965). Berman, H. A., Carlson, E. T., J 64A4-55, 333 (1960). Berman, H. A., Newman, E. S., J 65A3-102, 197 (1961)

;

J 67A1-188, 1 (1963); (1962) Paper III-S1, Mono.

43, Vol. I, p. 247; 4141A; 3601; 5225; 5226. Bernstein, B., 4542. Bernstein, B., Kearsley, E. A. Zapas, L. J., J 68B3-123,

103 (1964) ; 5167; 6722. Berry, L. A., J 68D1-317, 59 (1964) ; J 68D12-432, 1275

(1964) ; (1964) TN216.

Berry, L. A., Chrisman, M. E., J 69D11-580, 1469

(1965) ; (1965) TN319.

Berry, L. A., Johler, J. R., J 66D6-234, 737 (1962) ; (1964) Mono.78; (1965) TN313; 5538. Bers, A., Chorney, P., J 68D5-365, 674 (1964). Bersch, C. F., McCrackin, F. L., 3169. Bersch, C. F., Stromberg, R. R., Achhammer, B. G., 3319. Best, A. S., McPherson, A. T., 6395. Bestul, A. B., 3139; 3530; 6828; 9133. Bestul, A. B., Blackburn, D. H., 3483. Bestul, A. B., Chang, S. S., 5943; 6059; 6830. Bestul, A. B., Shepley, L. C, 3905; 5289. Bestul, A. B., Sterrett, K. F., Blackburn, D. H., Chang,

S. S., Horman, J., J 69C1-181, 19 (1965). Beverly, W. B., Caswell, R. S., Speigel, V., Jr., 5335. Beverly, W. B., Spiegel, V., Jr., J 68A1-250, 1 (1964). Bhalla, C. P., (1964) Mono.81.

Bhonsle, R. V., da Rosa, A. V., Garriott, 0. K., J 69D7-

526, 929 (1965).

Biagi, F., Burkhard, M. D., Corliss, E. L. R., Koidan,

W., 3453.

Bickel, J. E., Hanselman, J. C, Casselman, C. J., Tibbals, M. L., J 68D1-308, 11 (1964). Bickmore, R. W., Hansen, R. C, J 64D6, 731 (1960). Bidelman, W. P., Corliss, C. H., 4687. Bicnenstock, A., 4034; 5218. Bienenstock, A., Burley, G., 5821.

Billick, I. H., 6057; 6251; 6433A.

Billick, I. H., Bowen, R. J., 6604.

Billick, I. H., Weiss, G. H., J 70A1-383, 17 (1966). Birky, M. M., Boyne, H. S., Schweitzer, W. G., Jr., 6702. Birmingham, B. W., 9105. Birmingham, B. W., Brennan, J. A., Wilson, W. A., Radebaugh, R., 4342. Birmingham, B. W., Chelton, D. B., Dean, J. W., 3469;

5662. Birmingham, B. W., Chelton, D. B., Mann, D. B., Hernandez, H. P., 3170. Birmingham, B. W., Hernandez, H. P., 6180. Birmingham, B. W'., Mann, D. B., Chelton, D. B., 3425A. Birmingham, B. W., Mann, D. B., Sixmith, H., Wilson, W. A., 5161. Birmingham, B. W., Sixsmith, H., Wilson, W. A., (1961) TN115 (PB161616); 4981. Birmingham, B. W., Wilson, W. A., Martin, K. B., Brennan, J. A., 3536. Birnbaum, G., Bussey, H. E., 3156. Birnbaum, G., Maryott, A. A., 3644; 3670; 4525; 6227. Birnbaum, G., Maryott, A. A., Estin, A. J., 3669.

Birss, F. W., Thorvaldson, T., McCurdy, K. G., (1962) Paper III-S10, Mono.43, Vol. I, p. 315. Bjorklund, W. R., 6228. Bjorklund, W. R., Mann, D. B., Macinko, J., Hiza, M. J., 3494. 413
Bjorklund, W. R., Weitzel, D. H., Robbins, R. F., Bopp,

G. R., 3614; 4054. Blackband, W. T., J 65D6-161, 575 (1961) ; J 68D2-333, 205 (1964). Blackburn, D. H., 3972. Blackburn, D. H., Bestul, A. B., 3483. Hlackbnrn, D. H., Haller, W., 6759. Blackburn, D. H., Sterrett, K. F., Bestul, A. B., Chang,

S. S., Horman, J., J 69C1-181, 19 (1965). Blackburn, G. F., (1963) M251.

Blackburn, G. F., Caldwell, F. R., J 66C1-81, 1 (1962) ; J 68C1-151, 41 (1964) ; 4887. Blaine, L. R., J 67C3-131, 207 (1963).

Blaine, L. R., Maki, A. G., 6130. Blaine, L. R., Plyler, E. K., Benedict, W. S., J 66A3-155, 223 (1962).

Blaine, R. L., (1962) Paper IV-S5, Mono.43, Vol. I, p. 501; 4866. Blaine, R. L., Ami, H. T., (1966) BSS5, Part 2, Sections 5 and 6; 4071. Blaine, R. L., Ami, H. T., Clevenger, R. A., (1965) BSS2, Part 1, Section 2. Blaine, R. L., Ami, H. T., Evans, D. N., (1966) BSS5,

Part 2, Section 4. Blame, R. L., Ami, H. T., Foster, B. E., (1965) BSS2,

Part 1, Section 1. Blaine, R. L., Bean, L., Hubbard, E. K., (1965) BSS2,

Part 1, Section 3. Blaine, R. L., Crandall, J. R., 3314. Blaine, R. L., Evans, D. N., Worksman, P., (1962) Paper VI-S3, Mono.43, Vol. II, p. 871. Blair, B. E., Morgan, A. H., J 69D7-525, 915 (1965).

Blair, B. E., Morgan, A. H., Crow, E. L., J 69D7-524, 905 (1965) ; 6810.

Blair, J. C, Davis, R. M., Jr., Kirby, R. C, J 65D5-146, 417 (1961).

Blair, W. E., Moore, R. K., J 65D6-159, 547 (1961). Blake, J. H., Keeler, R. N., Weitzel, D. H., Konecnik, M.,

3382. Blanch, G., (1964) AMS55, p. 721. Blandford, J. M., Smith, J. C, Schiefer, H. F., 3795. Bland ford, J. M., Smith, J. C, Shouse, P. J., Towne,

K. M., 4318; 4946. Blandford, J. M., Smith, J. C, Towne, K. M., 4945.

Blatt, J. M., Luness, J. N., Larsen, S. Y., 5824.

Bleicher, M., Knopp, M. I., J 69B4-156, 265 (1965).

Blevis, B. A., Chapman, J. H., J 64D4-65, 331 (1960).

Block, S., Hall, L. H., Perloff, A., 9064. Block, S., Hall, L. H., Perloff, A., Mauer, F. A., 6669. Block, S., Molin, J., Piermarini, J., 5863. Block, S., Ondik, H. M., MacGillairy, C. H., 4378. Block, S., Perloff, A., 3612; 5745; 9065. Block, S., Perloff, A., Weir, C. E., 6437. Block, S., Piermarini, G. J., J 67A1-193, 37 (1963) ; 5609; 5905. Block, S., Weir, C. E., Piermarini, G., J 69C4-208, 275

(1965) ; 6779. Bloom, M., Oppenheim, I., 3267B.

Bloss, R. L., 4073; 4516; 5702.

Bloss, R. L., Melton, C. H., 6763.

Bloss, R. L., Mordfin, L., 4911.

Bloss, R. L., Trumbo, J. T., 4172; 5142. Bockris, J. O'M., Reddy, A. K. N., (1964) M256, p. 229. Bode, L. R., Belrose, J. S., Hewitt, L. W'., J 68D12-436,

1319 (1964). Bogue, R. H., 556A.

Boischot, A., Lee, R. H., Warwick, J. W., 3609. Bollhagen, H., Carr, T. D., Bulkis, S., Smith, A. G., May, J., Lebo, G. R., Kennedy, D. J., J 69D12-584,

1530 (1965).

Bolton, E. C, 6187.

Bolz, L. H., Broida, H. P., Peiser, H. S., 4922.

Bolz, L. H., Eby, R. K., J 69A5-369, 481 (1965).

Bolz, L. H., Foner, S. N., Mauer, F. A., 3141.

Bolz, L. H., Mauer, F. A., J 65C4-75, 225 (1961) ; 4753;

4859; 5468.

Bolz, L. H., Mauer, F. A., Peiser, H. S., 3208.

Bonanomi, J., Kartaschoff, P., Newman, L. J., Atkinson, W. R., 5868. Bond, H. E., Harvey, K. B., 5744. Booker, H. G., J 68D5-363, 600 (1964) ; J 68D5-363, 607

(1964). Booker, H. G., Cohen, R., 1606A.

Booker, H. G., Dyce, R. B., J 69D4-484, 463 (1965). Boone, T. H., 3303. Boone, T. H., Horowitz, E., Mandel, J., Capott, R. J., 4072. Boone, T. H., Smith, J. R., 3992. Booth, S. F., Editor, (1960) M230; (1960) H77, Vol. I, II & III. Bopp, G. R., Weitzel, D. H., Robbins, R. F., Bjorklund,

3614; 4054. Borko, H., (1965) M269, p. 245. Borkowski, R., Ausloos, P. J., 4131; 4134; 5065; 5374; 5375; 6120. Borsch-Supan, W., J 65B4-63, 245 (1961). Borsch-Supan, W., Oser, H., J 67B1-92, 41 (1963). Bosburgh, W. C, Bates, R. G., 5971. Bose, R. C, Cameron, J. M., J 69B4-162, 323 (1965). Bose, R. C, Connor, W. S., 3426. Boswarva, I. M., Howard, R. E., Lidiard, A. B., 4651.

Boublil, Y., Eamshaw, K. B., 6316. Bouche, R. R., 4116. Boudouris, G., J 67D6-297, 631 (1963). Bowen, R. J., Billick, I. H., 6604. Bowen, R. L., 4074; 6442; 6500; 6581; 6582; 6583;

6584; 6585. Bowen, R. L., Rodriguez, M. S., 4975. Bower, V. E., Allen, G. F., Robinson, R. A., 5013. Bower, V. E., Bates, R. G., 5339; 5772. Bower, V. E., Bates, R. G., Canham, R. C, Prue, J. E., Bower, V. E., Paabo, M., Bates, R. G., J 65A3-110, 267

(1961) ; 3939. Bower, V. E., Robinson, R. A., J 69A1-323, 19 (1965) ; J 69A2-334, 131 (1965); J 69A4-356, 365 (1965);

J 69A5-365, 439 (1965); 3843; 4358; 5432; 5551;

5805; 8929. Bower, V. E., Robinson, R. A., Bates, R. G., J 66A1-142,

71 (1962). Bower, V. E., Robinson, R. A., Davis, M. M., Paabo, M., J 64A4-57, 347 (1960). Bower, V. E., Sager, E. E., J 64A4-58, 351 (1960). Bowhill, S. A., J 65D3-121, 213 (1961) ; J 65D3-130, 275

(1961) ; J 68D5-362, 572 (1964).

Boivles, K. L., J 65D1-97, 1 (1961); (1963) TN169;

3231A; 4265; 4638; 5336; 5470; 5627; 5733. Bowles, K. L., Balsley, B. B., Cohen, R., 5356. Bowles, K. L., Cohen, R., J 67D5-280, 459 (1963); 2111A; 4205; 4447; 5426.

Boivles, K. L., Cohen, R., Calvert, W., 4807. Bowles, K. L., Cohen, R. S., Ochs, G. R., Balsley, B. B., 3736.

Boivles, K. L., Klemperer, W. K., Ochs, G. R., 6325. Bowles, K. L., Ochs, G. R., Farley, D. T., Jr., Bandyopadhay, P., 5228. Bowles, K. L., Ochs, G. R., Green, J. L., J 66D4-203,

395 (1962). Bowles, K. L., VanZandt, T. E., 3900. Bowman, H. A., Aimer, H. E., J 67C3-133, 227 (1963). Bowman, H. A., Aimer, H. E., Jensen, M. W., Macurdij,

L. B., Peiser, H. S., Wasko, B., J 68C3-139, 141

(1964) . Bowman, H. A., Macurdy, L. B., J 64C4-46, 277 (1960). Bowman, H. A., Schoonover, R. M., J 69C3-202, 217

(1965) . Bowman, H. S., (1964) TN250; 6889. Bowman, P. B., Campbell, P. G., Wright, J. R., 4995. Bowman, R. R., Schafer, G. E. 4427. Bowyer, C. S., McKinney, J. E., 4398. Boyd, A. E., Morris, E. E., 3779. Boyd, G. M., 5740. Boyd, M. E., 4428; 4487. Boyle, D. R., 4431. 414
Boyle, D. ft., Geller, S. P., Mantek, P. A., 3929. Boyle, D. ft., Ledley, ft. S., 4185.

Boj/ne, S., Bai/, Z., G489. Boyna, //. S., Birky, M. TJf., Schweitzer, W. G., Jr., 6702.

ftoj/ne, H. S., Martin, W. C, 4645. Pozhcnov, P. I., Kavalerova, V. L, Salnikova, V. S., Suvorova. G. F.. (1962) Paper III-S12, Mono.43,

Vol. I, p. 327. Bozman, W. ft., (1963) TN170; 6115. Pozman. W. P.. Corliss. C. //., (1962) Mono.53. Praam. G. P. A., J 68D2-340, 257 (1964). Bracken, H. H., 5461. Bradley, J. L.. Morton, M., Milkovich, ft., Mclntyre, D., 5390. Bradshaiv, J. A., J 67D4-276, 405 (1963). Bradshaw, J. A., Abraham, L. G., Jr., J 65D2-113, 155 (1961) . Brady, A. H., J 68D3-343, 283 (1964). Brady, A. H.. Crombie, D. P., (1964) TN209; 5713.

Prodi/, A. H.. Crombie, D. D., Jean, A. G., Murphy.

A. C, Ctcele, F. K., 6182. Brady, A. H., Murphy, A. C, Crombie, D. D., (1963) TN206-1; (1964) TN206-2; (1964) TN206-3.

Brady. E. L., Rossmassler, S. A., 6220. Brady, E. L., Wallenstein, M. P., (1964) NSRDS-NBS1.

Bramble, J. H.. Hubbard. B. E.. J 65B4-65, 261 (1961). Bramble, J. H., Payne, L. E., J 65B2-54, 151 (1961);

J 65B4-66, 269 (1961); J 67B3-99, 145 (1963);

J 67B3-100, 157 (1963); J 68B2-121, 75 (1964);

5572. Branch, P. E., Paulsen, P. J., (1966) TN286.

Brandt. J. C, Chamberlain, J. W., 3234. Braniski, AL, (1962) Paper VIII-S5, Mono.43, Vol. II, p. 1075. Branscomb, L. A/., 4371; 4372; 4832; 5200; 5618; 5701;

5885; 6241; 6470. Branscomb, L. M., Hall, J. L., Robinson, E. J., 6825. Branscomb, L. M., Hummer, D. G., Stebbings, ft. ft., Fite, W. L., 3461. Branscomb, L. M., Moore, C. E., 5201. Branscomb, L. M., Seman, M. L., 4947. Branscomb, L. M., Shuler, K. E., Suddeth, J. A., (1961) TN116 (PB161617). Branscomb, L. M., Smith, S. J., 3698. Branscomb, L. M., Smith, S. J., Tisone, G. C, 8932. Branscomb, L. M., Steiner, B., Seaman, M., 4624; 6039. Branscomb, L. M., Thomas, ft. N., 4725. Brant, A. A., Collett, L. S., Bell, W. E., Ruddock, K. A., Siegel, H. 0., Wait, J. ft., 3239A.

Brauer, G. M., 4846; 6292; 6559; 8965. Brauer, G. M., Argentar, H., Durany, G., J 68A6-309,

619 (1964). Brauer, G. M., Civfan, S., 6290; 6636. Brauer, G. M., Horowitz,. E., 4969. Brauer, G. M., Kline, G. M., 6632. Brauer, G. M., Lehmann, F. A., 3974. Brauer, G. M., Morris, ft. W., Howe, W. B., J 67A3-

213, 253 (1963). Brauer, G. M., Newman, S. B., 4527. Brauer, G. M., Simon, L., J 66A4-164, 313 (1962). Brauer, G. M., Simon, L., Sangermano, L., 4690. Brauer, G. M., Strassburger, J., Tryon, M., Forziati, A. F., 3427. Brauer, G. M., White, E. E., Jr., Burnes, C. L., Woelfel,

J. B., 3174. Braurer, T., (1960) TN73 (PB161574).

Braut, A. 0., 5892. Brechna, H., Gordon, H. S., 6667. Breckenridge, F. C, (1964) H95; 3149; 3160; 3379;

4976. Bredsdorff, P., Horn, G. M., Kjaer, A., Plum, N. M.,

Poulsen, E., (1962) Paper VI-1, Mono.43, Vol. II, p. 749. Premmer. H., J 64D5-82, 467 (1960); J66D1-172, 31 (1962) ; J 68D1-316, 47 (1964); J 68D9-396, 967

(1964). Brennan, J. A., 5883.

Brennan, J. A., Scott, L. E., Chelton, D. B., 4610. Urcnnun, J. A.. Wilson, W. A., Martin, K. B., Birming- ham, P. W., 3536. Brennan, J. A., Wilson, W. A., Radebaugh, ft., Birming- ham, P. W., 4342; 4977. Brennan, J. G., Coyne, J. J., J 68A6-317, 675 (1964). Brennan, M. J., (1965) TN282.

Brenner, A., 3517; 4029; 4056; 5049; 5322; 6688; 6725. Brenner, A., Brenner, M., 6865. Brenner, A., Catey, S. L., 6020. Brenner, A., Couch, D. E., 3222. Brenner, A., Garcia-Rivera, J., 647A.

Brenner, A., Morgan, V. D., 152B. Brenner, A., Sligh, J., 5370. Brenner, M., Brenner, A., 6865. Brentari, E. G., Giarratano, P. J., Smith, ft. V., (1965) TN317.

Brentari, E. G., Smith, ft. V., 6205; 8902. Brentari, E. G., Smith, ft. V., Edmonds, D. K., Richards,

ft. J., 5917. Pretcmps, F. ft., Montgomery, G. F., 3891. Bretemps, F. ft., Saito, S., 3411; 3915. Prcyfoglc, L. D., Hornback, C. E., Sugar, G. ft., (1960) TN86 (PB161587).

Price, N., J 69D2-462, 257 (1965). Priggs, L. J., 226A; 354A; 3195A.

Briggs, L. J., Prode, W. ft., 2039A.

Britt, C. O., Tolbert, C. W'., Straiton, A. W., J 65D1-98,

15 (1961).

Prittin, W. E., Mockler, ft. C, 4763. Proadhurst, M. J., J 66A3-158, 241 (1962); J 67A3-

210, 233 (1963) ; 3881A; 5000; 5604; 6545. Broadhurst, M. G., Bur, A. J., J 69C3-195, 165 (1965). Broberg, J., Leiss, J. E., Schrack, ft. A., Wyckoff, J. M.,

6245. Broca, L. A., Harris, J. H., Villeneuve, A. T., J 69D10-

567, 1335 (1965). Brockman, J. F., Richardson, J. M., 6487. Brockman, J. ft., 4291. Brodd, ft. J., J 65A4-111, 275 (1961) ; 3274. Brodd, ft. J., DeWane, H. J., (1963) TN190; 5398; 6789. Brodd, ft. J., Eicke, W. G., Jr., J 66C2-89, 85 (1962). Brode, W. ft., (1962) Paper 1-1, Mono.43, Vol. I, p. 1; 962A.

Brode, W. ft., Briggs, L. J., 2039A.

Brode, W. ft., Crittenden, E. C, 1665A. Brode, W. ft., Gould, J. H., Wyman, G. M., 857A.

Brode, W. ft., Inscoe, M. N., Gould, J. H., 3346. Broida, H. P., 4445. Proida, H. P., Abramowitz, S., J 68A3-281, 331 (1964) ; 5516; 6528. Broida, H. P., Barger, ft. L., 4469; 4815; 9024; 9025. Broida, H. P., Barger, ft. L., Estin, A. J., 4608. Broida, H. P., Barger, ft. L., Estin, A. J., Radford, H.

E., 4818. Broida, H. P., Bass, A. M., J 67A4-228, 379 (1963);

(1961) Mono.24; 3546; 6523. Broida, H. P., Beale, G. E., Jr., 3309. Broida, H. P., Bolz, L. H., Peiser, H. S., 4922. Broida, H. P., Brown, ft. L., 6384. Broida, H. P., Carrington, T., 5650. Proida, H. P., Evcnson, K. M., Dunn, J. L., 6270. Proida, H. P., Fehsenfeld, F. C, Evenson, K. M., 6868. Proida, H. P., Ferguson, E. E., 5948; 6556. Proida, H. P., Franklin, J. L., 3358. Proida, H. P., Freis, E. D., Hufnagel, C. A., Rose, J. C,

1329A.

Proida, H. P., Garton, W. ft. S., 903B.

Broida, H. P., Garvin, D., 5206. Broida, H. P., Garvin, D., Kostkowski, H. J., 3464; 4520. Proida, H. P., Gaydon, A. G., 811A; 1012A.

Broida, H. P., Golden, S., 3723. Proida, H. P., Kiess, N. H., 4219. Proida, 77. P., Krishnamachari, S. L. N. G., 4050. Proida, H. P., Krishnamachari, S. L. N. G., Nicholls,

ft. W., 4066. Broida, H. P., Kurzweg, U. H., 3367. 415
Broida, H. P., Nicholls, R. W., 3708. Broida, H. P., Peyron, M., 3527. Broida, H. P., Pollack, G. L., 5682; 5842. Broida, H. P., Radford, H. E., 4903; 5231. Broida, H. P., Schiff, H. I., Sugden, T. M., 4196. Broida, //. /'., Schmeltekopf, A. L., 5657. Broida, H. P., Schoen, L. J., 3510; 3780; 4673. Broida, H. P., Tanka, I., 4607. Broida, H. P., Tanaka, I., Carrington, T., 4226. Brombachcr, W. G., (1961) Mono.35. Brombacher, W. G., Smith, J. F., (1965) M271.

Bromley, D. A., Nicholls, R. W., Reeves, E. M., 3207. Brooke, R. L., Cruz, J. E., 6576. Brooks, J. R., Smith, S. W., 3628. Brooks, L., Dreith, F., Dean, J. W., 5261A.

Brooks, P. P. B., (1962) Mono.39. Brower, W. S., Jr., Fang, P. H., 5152; 5291. Brower, W. S., Jr., Farabaugh, E. N., 6745. Brown, D. J., Wescott, L. R., Wright, J. W., TN40-3

to 40-7 (PB151399-3 to PB151399-7) ; TN40-8 to TN40-13. Brown, D. W., Fearn, J. E., Lowry, R. E., 8970. Brown, D. W., Florin, R. E., Wall, L. A., J 64A4-49,

269 (1960); 3551; 4063; 4662; 4667; 5332. Brown, D. W., Wall, L. A., 3562; 4096; 5614; 5615. Brown, D. W., Wall, L. A., Florin, R. E., 3146. Broivn, E. H., 3691; 3695A. Brown, H. W., Harvey, K. B., 3203A. Brown, J. E., Tryon, M., Mandel, J., 5286. Brown, J. T., Calvert, W., Davies, K., Stiltner, E., 4639; 5338. Brown, L. M., Darwent, B., 9030. Brown, N. L., 9008. Brown, N. L., Barfield, R. N., 3762. Brown, R. F., Jr., J 67C1-117, 33 (1963). Brown, R. F., Jr., Nesh, F., 4452. Brown, R. L., Broida, H. P., 6384. Brown, R. L., James, T. C, 6817. Brown, R. R., Campbell, W. H., 4480. Brown, R. R., Little, C. G., Ortner, J., Hartz, T. R., Holt, 0., Hultqvist, B., Leinbach, H., 4955. Brown, T. H., Whipple, E. B., Farrar, T. C, Coyle,

T. D., 8988A. Brown, W. E., Epstein, E. F., J 69A6-378, 547 (1965). Brown, W. E., MacGregor, J., 6613. Brown, W. W., Watt, A. D., Plush, R. W., Morgan, A.

H., J 65D6-164, 617 (1961). Brualdi, R. A., J 69B1&2-138, 87 (1965). Brualdi, R. A., Newman, M., J 69B3-147, 159 (1965);

6794. Bruck, S. D., J 65A6-130, 485 (1961) ; J 65A6-131, 489

(1961) ; J 66A1-143 77 (1962); J 66A3-159, 251

(1962) ; J 66A6-184, 489 (1962); 4085. Bruck, S. D., Bailey, S. M., J 66A2-151, 185 (1962). Bruckenstein, S., Kolthoff, I. M., Bates, R. G., 6578. Brueckmann, R. E., Costrell, L., 4518. Brumbergcr, H., Deslattes, R., J 68C3-161, 173 (1964). Brunauer, S., Greenberg, S. A., (1962) Paper III-l, Mono.43, Vol. I, p. 135. Bruner, E. C, Jr., Roach, F. E., Moore, J. G., Cronin, H., Silverman, S. M., 3836. Bryson, J. O., Mathey, R. G., 4959. Bryson, J. 0., Skoda, L. F., Watstein, D., 6758. Bryso», J. O., Watstein, D., 4006. Buck, A. L., Hinchman, W. R., 6073. Budden, K. G., J 69D2-454. 191 (1965). Budnick, J. I., Bennett, L. H., 3620; 3674. Budnokov, P. R., (1962) Paper IV-Si, Mono.43, Vol.

I, p. 469. Bullen, J. M.. King, G. A. M., J 67D4-272, 383 (1963). Bullman, G. W., Roth, F. L., Wood, L. A., J 69A4-354,

347 (1965).

Bullock, E. R., Hurst, A. H., (1965) M267, Paper 6, p. 119. Bunch, M. D., Powell, R. L., Caywood, L. P., Jr., 4155;

4735. Bunch, M. D., Powell, R. L., Corruccini, R. J., 4156.

Bunch, M. D., Powell, R. L., Gibson, E. F., 3616. Bunting, E. N., Lippincott, E. R., Weir, C. E., Van Val- kenburg, A., 3799. Bunting, E. N., Marzullo, S., 3771. Bunting, R. F., Mclntyre, D., Williams, L. C, Hexner,

P. E., Kim, H. G., Weber, F. N., Kupke, D. W.,

4534. Baplin, M., Stern, K. H., 3634. Bur, A. J., 6064; 6751. Bur, A. J., Broadhurst, M. G., J 69C3-195, 165 (1965). Burdick, M. D., 6393. Burdick, M. D., Knudsen, F. P., Parker, H. S., 3543. Burdick, M. D., Parker, H. S., (1964) TN237, p. 7. Burdick, M. D., Rushmer, M. A., (1966) BSS4; 6531;

6538. Burgeson, D. A., Pestalozzi, W. G., Richards, R. J., 6469. Burgess, B., J 68D1-309, 15 (1964) ; J 68D1-310, 17 (1964) ; J 68D1-324, 115 (1964). Burgess, R. E., J 69D3-474, 381 (1965). Burgess, R. W., Kropschot, R. H., 5559. Burke, J. E., (1965) M 257, Paper 3, p. 29. Burke, J. E., Twersky, V., J 68D4-359, 500 (1964). Burke, J. R., J 68D4-359, 511 (1964). Burke, R. W., Weise, E. L., Taylor, J. K., 6768. Burkhard, M. D., Corliss, E. L. R., Koidan, W., Biagi,

F., 3453. Burklcy, I. B., Rcbbert, R. E., 5788. Burley, G., J 67A4-219, 301 (1963) ; J 68A4-283, 355 (1964); 5576; 5578; 5802; 5914; 6123; 6169; 6749.

Burlvtf, <!., Bicvcnstock, A., 5821. Burley, G., Herrin, D. W., 4614. Burley, G., Kissinger, H. E., J 64A5, 403 (1960). Burley, R. M., Reynolds, M. M., Corruccini, R. J., Fulk, M. W., 5626. Burman, R., J 69D5-505, 701 (1965) ; J 68D11-422, 1215

(1964). Burman, R., Gould, R. N., J 69D5-504, 693 (1965). Burnett, H. C, Duff, R. H., Vacher, H. C, J 66C2-92,

113 (1962). Burnett, H. C, Vacher, H. C, Duff, R. H., 3901. Burnett, H. C, Staugaitis, C. L., 1759A. Burns, C. L., Brauer, G. M., White, E. E., Jr., Woelfel,

J. B., 3174. Bums, C. L., Stanford, J. W., Paffenbarger, G. C.

1484A. Burns, C. L., Sweeney, W. T., 4049 ; 6105. Burns, C. L., Taylor, D. F., J 67A1-195, 55 (1963). Burns, G. W., 5708. Burns, G. W., Evans, J. P., 4450. Burns, G. W., Gallagher, J. S., J 70C2-222, 89 (1966). Burns, G. W., Kostkowski, H. J., 5816. Burns, W. R., J 68D4-358, 429 (1964). Burris, R. W'., Berg, H. F., Eckerle, K. L., Wiese, W. L.. 6344. Bussey, H. E., 3417; 3458; 3787. Bnsscy, II. E., Birnbaum, G., 3156. Bussvy, H. E., Estin, A. J., 3534. Bussey, H. E., Gray, J. E., WW.

Bussey, H. E., Gray, J. E., Bamberger, E. C, Rushton,

E., Russell, G., Petley, B. W., Morris, D., 6149. Bussey, H. E., Risley, A. S., 6068. Bussey, W. S., 3229A.

Bussey, W. S., Jensen, M. W., 3826. Butler, A. P., Rosholt, J. N., Garner, E. L., Shields, W. R., 6819. Buttlar, H. V., Wait, J. R., Frische, R. H., 2525A.

Buttler, F. G., Percival, A., Taylor, H. F. W., (1962) Paper III-S5, Mono.43, Vol. I, p. 277. Butzlaff, H. R., George, D. A., Mandel, J., 4341. c

Cadoff, B. C, Berger, H. W., J 69C1-187, 67 (1965) ; 9091 • 9092.

Cahilt, P., Lide, D. R., Jr.. Gold, L. P., 6212.

Cahill, W. F., Gautschi, W., (1964) AMS55, p. 227. 416
Cahn, J. H., Megill, L. R., 6430. Cahn, L., Moore, R. T., Stark, M. C, 5991. Cahoon, B. A., Bean, B. R., J 65D1-104, 67 (1967);

4143. Cahoon, B. A., Bean, B. R., Thayer, G. D., J 64D5-84,

487 (1960).

Cahooyi, B. A., Riggs, L. P., 5949.

Caldirola, P., De Barbieri, 0., J 69D1-441, 33 (1965). Caldwell, F. R., (1962) Mono.40; J 69C2-189, 95

(1965) ; 5079. Caldwell, F. R., Blackburn, G. F., J 66C1-81, 1 (1962) ; J 68C1-151, 41 (1964); 4887. Caldwell, F. R., Freeze, P., Davis, E. R., 4888.

Calfee, R. F., Benedict, W. S., (1966) TN332.

Calfee, R. F., Droppleman, L. K., Megill, L. R., (1963) TN178.

Calfee, R. F., Gates, D. M., Hansen, D. W., 5254; 5255. Calfee, R. F., Gates, D. M., Hansen, D. W., Benedict, W. S., (1964) Mono.71.

Call, D. H., Abramowitz, M., Mathews, J. C, 954A.

Calvert, J. P., Kruger, J., 6468. Calvert, W., (1962) TN145; 5412. Calvert, W., Cohen, R., 4357. Calvert, W., Cohen, R., Bowles, K. L., 4807. Calvert, W., Davies, K., Stiltner, E. C, Brown, J. T., 4639; 5338.

Calvert, W., Fejer, J. A., 6346. Calvert, W., Goe, G. B., 5569. Calvert, W., Knecht, R. W., ZanZandt, T. E., 6161. Calvert, W., Rishbeth, H., VanZandt, T. E., 5908; 6406A.

Calvert, W., Schmid, C. W., 6388. Calvert, W., VanZandt, T. E., Knecht, R. W., Goe, G. B., 4640; 5342. Cameron, J. M., J 67B1-89, 19 (1963) ; 2522A. Cameron, J. M., Bose, R. C, J 69B4-162, 323 (1965). Cameron, J. M., Derman, C, (1964) TN238, p. 1. Cameron, J. M., Hilsenrath, J., 9126. Cameron, J. M., McNish, A. G., 3729. Campbell, E., Miller, C. K. S., Daywitt, W. C, 5897;

6530. Campbell, P. G., Martin, K. G., Wright, J. R., 6645. Campbell, P. G., Wright, J. R., J 68C2-157, 115, (1964) ; J 68C4-176, 297 (1964); 4575; 6277; 6280; 6288; Campbell, P. G., Wright, J. R., Bowman, P. B., 4995. Campbell, P. G., Wright, J. R., Fridinger, T. L., 6440;

6474. Campbell, W. H., J 64D4-74, 409 (1960); 4158; 4915; 5500; 5710; 5888. Campbell, W. H., Brown, R. R., 4480. Campbell, W. H., Leinbach, H., 4138. Campbell, W. H., Matsushita, S., 4504. Campbell, W. H., Rees, M. H., 3950. Campbell, W. H., Stiltner, E. C, J 69D8-544, 1117

(1965). Campbell, W. H., Young, J. M., 5209. Campbell, W. R., 692A.

Candela, G. A., 6796. Candela, G. A., Johannesen, R. B., 5456. Candela, G. A., Mundy, R. E., 3957; 4462; 9056.

Canfield, L. R., Madden, R. P., Haas, G., 5542.

Canfield, L. R., Rabinovitch, K., Madden, R. P., 6550. Canham, R. G., Bates, R. G., Bower, V. E., Prue, J. E., Cannon, E. W., 332A; 3858A. Cannon, M. K., Arthur, M. G., Allred, C. M., 5882A.

Canty, G., Mandelkern, L., Diorio, A. F., 5773. Canty, G., Story, V. M., J 68A2-265, 165 (1964). Capott, R. J., Horowitz, E., Mandel, J., Boone, T. H., 4072. Capott, R. J., Newman, S. B., Mandel, J., 3277. Capott, R. J., Young, R. W., Newman, S. B., 9043. Capps, W., Macedo, P. B., Wachtman, J. B., Jr., 6016. Capps, W., Shartsis, L., Spinner, S., 682A.

Cargo, G. T., 4417; 5512; 5795.

Cargo, G. T., Shisha, 0., J 66B4-84, 169 (1962); J 70B1-168, 79 (1966) ; 5864. Carlcton, N. P., Megill, L. R., 4626; 6060. Carlson, E. T., J 68A5-292, 449 (1964) ; J 68A5-293, 453

(1964) ; (1966) BSS6.

Carlson, E. T., Berman, H. A., J 64A4-55, 333 (1960). Carman, C. M., Frankel, H. E., Bennett, J. A., 3541. Carmichael, H. H., Gorden, R., Jr., Ausloos, P., 6713. Caron, P. R., J 69D5-508, 729 (1965). Carpenter, D. L., J 68D5-363, 609 (1964). Carpenter, F. G., 3179; 3322; 5105. Carpenter, F. G., Deitz, V. R., 3951; 4373; 4557; 4882;

5227; 5680; 5700. Carpenter, F. G., Deitz, V. R., Arnold, R. G., 6145. Carpenter, F. G., Deitz, V. R., Rootare, H. M., 6485. Carpenter, F. G., Larry, D., Deitz, V. R., 4716; 5791. Carpenter, F. G., Little, R. C, Deitz, V. R., 4677. Carpenter, F. G., Lopez, J., Deitz, V. R., 3962. Carpenter, F. G., Peiperl, M. D., Deitz, V. R., 4346. Carpenter, F. G., Redd, J., 4507. Carpenter, F. G., Rootare, H. M., Deitz, V. R., 4293;

4571; 4914. Carpenter, G. B., Whitson, A. L., J 69D4-500, 651

(1965) . Carpenter, L. H., Keulegan, G. H., J 64C3-42, 241

(1960). Carpenter, R. J., (1964) TN235; (1964) TN237, p. 5. Carpenter, R. J., Beaty, E. C, Bender, P. L., Saito, S., Stone, R. O., 3392. Carpenter, R. J., Ochs, G. R., J 66D3-193, 249 (1962)

;

3342. Carpenter, R. J., Ochs, G. R., Smith, E. K., 4933. Carpenter, R. J., Sugar, G. R., Ochs, G. R., J 64D5-86, 495 (1960). Carpenter, R. J., Yee, K. W., 5633. Carr, T. D., Gulkis, S., Smith, A. G., May, J., Lebo,

G. R., Kennedy, D. J., Bollhagen, H., J 69D12-584,

1530. Carrera, N. J., Walker, R. F., 5483. Carrera, N. J., Walker, R. F., Plante, E. R., J 68A3-280,

325 (1964). Carrington, T., 3298; 3544A; 4393; 4659; 4710; 5918;

6386; 6606. Carrington, T., Broida, H. P., 5650. Carrington, T., Shuler, K. E., Light, J., 6891. Carrington, T., Tanaka, I., Broida, H. P., 4226.

Carroll, J. C, Harding, W. B., Woodward, M. W.,

(1966) TN331.

Carson, W. B., Koch, J. A., Pope, J. H., Gallet, R. M.,

6833. Carter, J. C, Coyne, J. J., Meshkov, S., 9052. Carter, J. C, Coyne, J. J., Meshkov, S., Horn, D., Kugler, M., Lipkin, H. J., 9053. Carter, J. C, Horn, D., Kugler, M., Lipkin, H. J., Coyne,

J. J., 9142. Carter, T. J., 3912; 5311; 6646. Carwile, N. L., Geil, G. W., 3194; 4094. Carwile, N. L., Meyerson, M. R., Rosenberg, S. J., 3976. Casaverde, M., Giesecke, A., Cohen, R., 5316. Case, W. E., Harrington, R. D., Schmidt, L. B., J 68C2-

154, 85 (1964) ; J 68C4-172, 255 (1964). Case, W. E., Larsen, N. T., 5438. Case, W. E., Preston, C. C, (1963) TN173.

Case, W. E. Schmidt, L. B., Harrington, R. D., (1964) TN221.

Cassel, J. M., 3197; 3576; 4522.

Cassel, J. M., Madlekern, L., Roberts, D. E., 5016. Casselman, C. J., Hanselman, J. C, Tibbals, M. L., Bickel, J. E., J 68D1-308, 11 (1964). Cassidy, E. C, Tsai, D. H., J 67C1-120, 65 (1963);

4043.

Castle, A. B., Sr., Jones. F. E., 5457. Caswell, R. S., (1963) TN159; J 66A5-174, 389 (1962) ; 3662. Caswell, R. S., Barloutaud, M., Gastebois, J., de Pinho, A. G., Quidort, J., 6334. Caswell, R. S., Beverly, W. B., Spiegel, V., Jr. 5335. 417
Caswell, R. S., Chin, J., Mosburg, E. R., Jr., 2776A.

Caswell, R. S., Noyce, R. H., Garfinkel, S. B., Mosburg,

E. R., Jr., 5631. Caswell, R. S., Noyce, R. H., Mosburgh, E. R., Jr., Garfinkel, S. B., 5174. Catalan, M. A., Meggers, W. F., Garcia-Riquelme, 0., J 68A1-252, 9 (1964). Cataland, G. H., Edlow, M. H., Plumb, H. H., 4146;

4885; 4990. Cataland, G. H., Plumb, H. H., J 69A4-358, 375 (1965) ; J 69A6-375, 531 (1965); J 70A3-400, 243 (1966);

4465; 4472; 6580. Cataland, G. H., Plumb, H. H., Edlow, M. H., 3861. Catanzaro, E. J., Lessing, P., 6389. Catanzaro, E. J., Murphy, T. J., Garner, E. L., Shields, W. R., J 68A6-306, 593 (1964). Catanzaro, E. J., Shields, W. R., Murphy, T. H., Garner,

E. L., J 70A2-395, 193 (1966). Cateora, J. V., Hubbard, R. W., (1961) TN107 (PB161608) ; 4830. Catey, S. L., Brenner, A., 6020. Cathcart, J. V., Petersen, G. F., (1964) M256, p. 201. Caul, H. J., Clabaugh, W. S., Susa, M. E., 3724. Caul, H. J., Crowell, W. E., Kimmel, W. D., Paffenbarger, G. C. 6003. Caul, H. J., Kumpula, J. W., 6560. Caul, H. J., Longton, R., Sweeney, W. T., Pafjenbarger,

G. C, 5312. Caul, H. J., Mulligan, B. W., Rasberry, S. D., Scribner, B. F., J 68A1-251, 5 (1964).

Cavallo, L. M., 3853. Cavallo, L. M., Anspach, S. C, Garfinkel, S. B., Hutchinson, J. M. R., Smith, C. N., (1965) M260-9. Caywood, L. P., Jr., Powell, R. L., 4733. Caywood, L. P., Jr., Powell, R. L., Bunch, M. D., 4155;

4735. Cezairliyan, A., 6546. Cezairliyan, A., Touloukian, Y. S., 6662. Chadwick, W. B., J 65D6-166, 637 (1961) ; J 67D1-241,

37 (1963); (1961) TN117 (PB161618) ; 3575;

5118. Chalkley, L., McLaughlin, W. L., 6837; 6839; 6854. Chamberlain, G. E., 6875. Chamberlain, G. E., Heideman, H. G. M., 6793. Chamberlain, G. E., Simpson, J. A., Mielczarek, S. R., 6748. Chamberlain, G. E., Smith, S. J., Heddle, D. W. 0., 6447. Chamberlain, G. J., Judd, D. B., Haupt, G. W., J 66C2-

93, 121 (1962) ; 5007. Chamberlin, J. L., J 69C4-211, 303 (1965). Chamberlin, J. L., Spangenberg, D. B., Strang, A. G., 6716. Chamberlain, J. W., Brandt, J. C, 3234. Chamberlain, J. W., Hunten, D. M., Rundle, H. N., Chang, S. S., Bestul, A. B., 5943; 6059; 6830. Chang, S. S., Sterrett, K. F., Blackburn, D. H., Bestul, A. B., Horman, J., J 69C1-181, 19 (1965). Chang, T. T., 6031. Chapman, F. W., Jones, D. L., J 68D11-418, 1177

(1964) . Chapman, J. H., Blevis, B. C, J 64D4-65, 331 (1960). Chapman, S., 1251 A; 1419 A; 2374 A; 3487; 3558; 4326;

4356. Charles, A. M., Mann, C. W., Randall, E. B., Jr., Mandcl,

J., Kilduff, T. J., 342A.

Chelton, D. B., 6355. Chelton, D. B., Birmingham, B. W., Dean, J. W., 5662. Chelton, D. B., Birmingham, B. W., Mann, D. B., Hernandez, H. P., 3170. Chelton, D. B., Dean, J. W., Birmingham, B. W., 3469. Chelton, D. B., Mann, D. B., Birmingham, B. W., 3425A.

Chelton, D. B., Scott, L. E., Brennan, J. A., 4610. Chelton. D. B., Vander Arend, P. C, 6458; 6459. Chen, K-M., J 69D2-460, 243 (1965); J 69D2-459, 235

(1965) ; J 69D11-581, 1481 (1965).

Chen, W. T., Waxman, M., J 69C1-182, 27 (1965). Chen, Y. M., J 68D6-372, 747 (1964). Chen, Y. M., Keller, J. B., J 66D1-170, 15 (1962). Cheng, D. K., Rudolph, J. C, J 69D9-562, 1271 (1965). Cheng, D. K., Vural, A. M., J 68D4-353, 355 (1964). Chernoff, L., (1963) TN198.

Chi, M., Kroll, W. D., J 66C4-109, 331 (1962). Chia, R. C, Fung, A. K., Moore, R. K., J 69D4-499, 641

(1965).

Chill on, C. J., 4408.

Chilton, C. J., Crombie, D. D., Jean, A. G., 6284.

Chilton, C. J., Diede, A., Radicella, S., 6510.

Chilton, C. J., Steele, F. K., J 68D12-431, 1269 (1964) ; J 69D8-552, 1196 (1965); (1964) TN210.

Chilton, C. J., Steele, Norton, R. B., 5849. Chin, J., Caswell, R. S., Mosburg, E. R., Jr., 2776A.

Chin, J., Hirshfeld, A. T., Hoppes, D. D., 5663. Chin, J., Murphey, W. M., 5417. Chinburg, C. H., Zapf, T. L., Wolf, H. K., 5405. Chisholm, L. J., Report Editor, (1960) M272.

Chivers, H. J. A. 3675; 3866; 3947; 5770; 5970; 6522. Chivers, H. J. A., Hargreaves, J. K., 6075; 6162; 6565;

6655. Chivers, H. J. A., Hargreaves, J. K., Petlock, J. D.

5889. Chivers, H. J. A., Lawrence, R. S., Little, C. G., 5890. Chivers, H. J. A., Little C. G. Schiffmacher, E. R., Sullivan, K. W., 6663. Chorney, P. A., Bers, A., J 68D5-365, 674 (1964). Chrisman, M. E., Berry, L. A., J 69D11-580, 1469

(1965); (1965) TN319.

Christensen, D., Lide, D. R., Jr., 3971; 4182. Christensen, R. G., Horowitz, E., Tryon, M., 9115. Chrzanowski, P., Greene, G., Lemmon, K. T., Young,

J. M., 4394. Chrzanowski, P., Young J. M., Greene, G., Lemmon,

K. T., 4701. Civjan, S., Brauer, G. M. 6290; 6636. Clabaugh, W. S., 4263. Clabaugh, W. S., Caul, H. J., Susa, M. E., 3724. Clabaugh, W. S., Gilchrist, R., 482A.

Clabaugh, W. S., Murphy, T. J., Gilchrist, R., J 64A4-59,

355 (1960); J 64A6-79, 535 (1960). Clapp, R. E., J 69D11-575, 1425 (1965). Clark, A. F., Gniewek, J. J., 8956. Clark, A. F., Gniewek, J. J., Moulder, J. C. (1965) TN321.

Clark, H. E., 6610. Clark, H. E., Moore, D. G., 6863. Clark, T. A., 5334. Clarke, J. T., Gorden, R., Jr., 3885.

Cleek, G. W., Consitt, F. J. P., Lawson, W. D., 8964. Cleek, G. W., Malitson, I. H., Stavroudis, O. N., Sutton, L. E., 5408.

Cleek, G. W., Scuderi, T. G., 3193; 3537. Cleek, G. W., Spinner, S., 3809.

Cleek, G. W., Villa, J. J., Hahner, C. H., 3293. Cleek, G. W., Wachtman, J. B., Jr., Scuderi, T. G., 4730. Clevcnger, R. A., Blaine, R. L., Ami, H. T., (1965) BSS2, Part 1, Section 2. Cline, D., 4699.

Cline, D., Kropschot, R. H., 4481; 5059.

Cline, D., Kropschot, R. H., Apr. V., Wilson, J. H., 5041.

Clinton. W. L., 4787; 4788.

Coble, R. L., Kinqery, W. D„ (1963) Mono. 59, p. 103. Coblentz, C. W., Achenbach, P. R., 5359. Cochrane, R. C, (1966) M275.

Codling, K., Madden, R. P., 5210; 5502; 6274; 6339;

6631; 6887; 9123. Coe, R. J., Curtis, W. L., J 68D2-339, 251 (1964). Cohen, A., Isbell, H. S., Tipson, R. S., Hague, J. L. Scribner, B. F., Smith, W. H., Wade, C. W. R., (1962) Mono.54. Cohen, A. Schaffer, R., 5290. Cohen, A., Tipson, R. S., 5670; 6580A.

Cohen, G. I., Knop, C. M., J 68D4-354, 363 (1964). 418
Cohen, A'., Wegstein, J. H., 6611. Cohen, M. H., Yeh, Y., J 69D4-490 539 (1965). Cohen, M. L., Schooley, J. F., Hosier, W. R., 6411. Cohen, M. L., Schooley, J. F., Hosier, W. R., Ambler, E., Becker, J. H., Koonce, C. S., 6682. Cohen, R., Booker, H. G., 1606A.

Cohen, R. S., Bowles, K. L., J 67D5-280, 459 (1963) ; 211A; 4205; 4447; 5426. Cohen, R., Bowles, K. L., Balsley, B. B., 5356. Cohen, R. S., Bowles, K. L., Calvert, IF., 4807. Cohen, R. S., Boivles, K. L., Ochs, G. R., Balsley, B. B., 3736. Cohen, R., Calvert, W., 4357. Cohen, R., Casavcrde, M., Giesecke, A., 5316. Cohen, R., Farley, D. T., Jr., 5957. Cohen, R., Pitteicay, M. L. V., 3955. Cohn, M., Wentworth, F. L., J 68D6-366, 681 (1964).

Cole, R. K., Jr., J 69D10-568, 1345 (1965). Coleman, B. D., Gornick, F., Weiss, G. H., 5698. Coleman, C. D., Leiner, A. L., Weinberger, A., Lober- man, H., 4402.

Coll, D. C, Storey, J. R., J 68D10-415, 1115 (1964) ; J 69D8-550, 1191 (1965).

Collett, C. T., 5373; 5813; 6620.

Collett, L. S., Brant, A. A., Bell, W. E., Ruddock, K. A., Siegel, H. O. Wait, J. R., 3239A

Collett, L. S., Wait, J. R., 3169A.

Collier, R. S., Harden, J. L., 5098.

Collier, R. S., Kamper, R. A., Ohori. Y., 6797.

Collin, R. E., Oliner, A. A., J 68D4-359, 469 (1964).

Collins, M. M. C, Creed, F. C, Cones, H. N., 5298. Colson, J. P., McCrackin, F. L., (1964) M256, p. 61; (1964) TN242.

Comeford, J. J., Abramowitz, S., 6754. Comeford, J. J., Abramowitz, S., Levin, I. W., 6818. Comeford, J. J., Gould, J., 3581. Comeford, J. J., hide, D. R., Mann, D. E., 9102. Comeford, J. J., Mann, D. E., 6761. Comeford, J. J., Mann, D. E., Schoen, L. J., hide, D. R.,

Jr., 5409. Comeford, J. J., Milligan, D. E., Jacox, M. E., Bass, A. M., Mann, D. E., 6852. Comeford, J. J. Milligan, D. E. Jacox, M. E., Mann,

D. E., 6802. Como, R. J., Rumfelt, A. Y., 3290. Compere, E. L., Jr., Mears, T. W., Stanley, C. L., Howard, F. L„ J 67A5-236, 475 (1963). Conda, A. M., 9073A.

Conda, A. M., Wait, J. R., 2665A; 3680; 3692; 3733;

4281.

• Condon, E. W., 263A; 517A; 548A.

Cones, H. N., 5674.

} Cones, H. N., Creed, F. C, Collins, M. M. C, 5298.

I Cones, H. N., Park, J. H., J 64C3-41, 229 (1960) ; J

66C3-96, 197 (1962).

; Conner, A. N., Jr., Doudnikoff, B., (1965) M269, p. 177. Connor, J. H., Couch, D. E., 3664. Connor, J. H., Lamb, V. A., 4030. Connor, W. S., 3484. Connor, W. S., Bose, R. C, 3426. Connor, W. S., Severo, N. C, 4603.

\ Connor. W. S., Youden, W. J., Severo, N. C, 3250.

I Connor, W. S., Young, S., (1961) AMS58.

Conrad, G. T., Jr., Newman, N., 4593. Conrad, G. T., Jr., Newman, N., Stansbury, A. P., 3397.

I Conrad, G. T., Jr., Shook, D. C, J 69C4-213, 319 (1965).

I' Consitt, F. J. P., Cleek, G. W., Lawson, W. D., 8964.

I Cook, C. C, Allred, C. M., J 64C3-40, 225 (1960) ; 3390. Cook, H. D., Marzetta, L. A., J 65C2-64, 129 (1961). Cook, H. D., Mielenz, K. D., Gillilland, K. E., Stephens,

R. B., 5902. Cook, M. I., Swanson, H. E., Evans, E. H., deGroot, J. H.. (1960) C539, Vol. 10.

I Cook, R. K., 4302; 4700; 4873; 4941; 5179. Cook, R. K., Edelman, S., Koidan, W., 6621. Cook, R. K., Goerke, V. H., Young, J. M., 6803.

Cook, R. K., Waterhouse, R. V., 6809. Cook, R. K., Waterhouse, R. V., Berendt, R. D., 3307. Cook, R. K., Wood, G. W., 8992. Cook, R. K., Young, J. M., 4942. Cooper, J., Simpson, J. A., Mielczarek, S. R., 6239. Cooper, J. R., 4834. Cooper, J. W., 3990; 4367; 6154; 6431. Cooper, J. W., Fano, U., 6787; 6831; 8914. Cooper, J. W., Martin, J. B., 4627; 5246. Cooper, J. W., Fano, U., Prats, F., 5235. Cooter, I. L., Sanford, R. L., (1962) Mono.47.

Copcland, L. E., Kantro, K. L., Verbeck, G., (1962) Paper IV-3, Mono.43, Vol. I, p. 429. Corah, H. J., DcFore, M. R., 3408A.

Corbett, H. H., Gibson, J. E., J 69D12-598, 1577 (1965).

Coriell, S. R., Jackson, J. L., (1963) TN92; 5221; 5313; 6244; 6265.

Coriell, S. R., Parker, R. L., 9034.

Corliss, C. H., J 66A1-136, 5 (1962) ; J 66A2-148, 169 (1962); J 66A6-185, 497 (1962); J 69A2-331, 87

(1965) ; 4647.

Corliss, C. H., Allen, C. W., 5173; 5175.

Corliss, C. H., Bidelman, W. P., 4687.

Corliss, C. H., Bozman, W. R., (1962) Mono.53.

Corliss, C. H., Kiess, C. C, Kiess, H. K., 3538; 3566.

Corliss, C. H., King, R. B., Olsen, K. H., 8928.

Corliss, C. H., Martin, W. C, J 64A6-68, 443 (1960).

Corliss, C. H., Meggers, W. F., J 70A1-386, 63 (1966).

Corliss, C. H., Meggers, W. F., Scribner, B. F., (1961) Mono.32, Pts. I and II; 3752; 4274.

Corliss, C. H., Tech, J. L., J 65A3-98, 159 (1961).

Corliss, C. H., Warner, B., 5900.

Corliss, E. L. R., J 67A5-235, 461 (1963) ; 4691; 5878.

Corliss, E. L. R., Burkhard, M. D., Koidan, W., Biagi,

F., 3453.

Corliss, E. L. R., Smith, E. L., Magruder, J. O., 3227A;

4104.

Corliss, E. L. R., Winzer, G. E., 9049. Comacchio, J. V., Soni, R. P., J 69B3-149, 173 (1965).

Cornell, R. G., Speckman, J. A., 6743. Cornog, D. Y., Rose, F. C, Walkowicz, J. L., (1964) M262-1.

Cornog, J. R., 6118. Cornog, J. R., Ellis, P. P., 8934. Cornog, J. R., Hockman, J. F., Craig, J. C, 5903. Corruccini, R. J., (1962) TN144 (PB161645) ; (1962) TN147 (PB161648); (1964) TN218; (1965) TN

322; (1965) TN323; J 69C4-209, 283 (1965) ; 3216;

3587; 4708; 5727; 5822; 6369. Corruccini, R. J., Gniewek, J. J., (1960) Mono.21;

(1961) Mono.29; 3455. Corruccini, R. J., Johnson, V. J., Mcintosh, G. E., Scott, R. B., 3171A.

Corruccini, R. J., Powell, R. L., Bunch, M. D., 4156. Corruccini, R. J., Reynolds, M. M., Fulk, M. M., Burley,

R. M., 5626. Corwin, W. C, Wachtman, J. B., Jr., J 69A5-367, 457

(1965).

Coryell, M. R., Nelson, R. E., (1966) Mono.96.

Costrell, L., 3495; 3673; 4905; 4906; 5611; 6391.

Costrell, L., Brueckmann, R. E., 4518.

Costrell, L., Richardson, A. C. B., 5838.

Costrell, L., Schwebel, A., Zimmer, G. W., 5581. Cottony, H. V., 5272. Cottony, H. V., Bailey, D. K., Kirby, R. C, Norton, K.

A., Slutz, R. J., Davis, R. M., Merrill, R. G., 3737. Cottony, H. V., Wilson, A. C, J 65D1-108, 101 (1961) : 3734.

Cotts, R. M., Bennett, L. H., Snodgrass, R. J., 9012.

Cotts, R. M., Zamir, D., Wayne, R. C, 6248. Couch, D. E., 4856; 6444. Couch, D. E., Connor, J. H., 3664. Cowan, W. T., Williams, R. H., Kelly, R. D., J 69D7-535,

1003 (1965).

Coyle, C. F., Armstrong, G. T., Marantz, S., 3228. Coyle, T. D., 5344. Coyle, T. D., Farrar, T. C, 6318. 419
Coyle, T. D., Ritter, J. J., Farrar, T. C, 6308. Coyle, T. D., Stone, F. G. A., 6371. Coyle, T. D., Whipple, E. B., Brown, T. H., Farrar, T. C, 8988A.

Coyne, J. J., Brennan, J. G., J 68A6-317, 675 (1964). Coyne, J. J., Carter, J. C, Meshkov, S., 9052. Coyne, J. J., Carter, J. C, Meshkov, S., Horn, D., Kugler, M., Lipkin, H. J., 9053. Coyne, J. J., Horn, D., Kugler, M., Lipkin, H. J., Carter,

J. C, 9142. Coyne, J. J., Spencer, L. V., 5072. Craft, T., Zapas, L. J., J 69A6-377, 541 (1965). Craig, D. N., Hamer, W. J., 6491. Craig, D. N., Hoffman, J. I., Law, C. A., Hamer, W. J., J 64A5-63, 381 (1960). Craig, D. N., Shields, W. R., Dibeler, V. H., 3412; 3413. Craig, J. C, Cornog, J. R., Hockman, J. F., 5903. Craig, T. S., Arp, V. D., Kropschot, R., 5011. Crandall, J. R., Blaine, R. L., 3314. Crandon, S., (1963) M248, p. 187. Crapo, H. H., J 69B1&2-133, 55 (1965). Crary, J. H., (1965) TN303; J 68D2-334, 211 (1964). Crary, J. H., Jean, A. G., 5119. Crary, J. H., Murphy, A. C, (1965) TN206-4; (1965) TN206-5.

Crary, J. H., Schneible, D. E., J 69D7-528, 947 (1965). Craven, D. L., Likins, R. C, Posner, A. S., Kunde, M. L., 3161. Crawford, F. W., J 69D6-512, 789 (1965). Creed, F. C, Collins, M. M. C, Cones, H. N., 5298.

Creitz, E. C, J 65A4-118, 389 (1961) ; 9029. Crew, J. E., J 65A2-93, 113 (1961). Crichlow, W. Q., J 64D6, 640 (1960) ; 5018; 5507. Crichlow, W. Q., Disney, R. T., J 68D5-363, 600 (1964). Criehlow, W. Q., Disney, R. T., Jenkins, M. A., TN18-3

to 18-26. Crichlow, W. Q., Herbstreit, J. W., J 68D8-388, 903

(1964) . Crichlow, W. Q., Spaulding, A. D., Roubique, C. J., J 66D6-231, 713 (1962). Crichlow, W. Q., Spaulding, A. D., Roubique, C. J., Disney, R. T., (1960) Mono.23.

Crigler, A. W., Moore, D. G., Eubanks, A. G., Thornton, H. R., Hayes, W. D., Jr., 4324. Crim, J. A., Hust, J. G., Wallace, L. D., Hall, L. A., (1962) TN137 (PB161638).

Crissman, J. M., Passaglia, E., J 70A3-398, 225 (1966). Crittenden, E. C, 1660A.

Croarkin, M. C, J 66B2-74, 59 (1962).

Croft, T. A., Fenwick, R. B., J 67D6-302, 735 (1963). Croghan, R. D., Watt, A. D., J 68D1-307, 1 (1964).

Croley, D. R., Jr., Tanenbaum, B. S., J 69D6-514, 819

(1965) . Crombie, D. D., J 65D5-151, 455 (1961) ; J 68D1-313,

27 (1964); J 68D6-368, 709 (1964); J 68D11-424,

1223 (1964); 5509; 5852; 8921A.

Crombie, D. D., Brady, A. H., (1964) TN209; 5713. Crombie, D. D., Brady, A. H., Jean, A. G., Murphy, A. C, Steele, F. K., 6182. Crombie, D. D., Brady, A. H., Murphy, A. C, (1963) TN206-1; (1964) TN206-2; (1964) TN206-3.

Crombie, D. D., Chilton, C. J., Jean, A. G., 6284. Crombie, D. D., Chilton, C. J., Steele, F. K., (1964) TN210.

Crombie, D. D., Jean, A. G-, J 68D5-362, 584 (1964) ; 5281; 6449. Crombie, D. D., McNeill, F. A., Allcock, G. M., 5844. Crombie, D. D., Rath, H. L., 6349. Cronin, H., Roach, F. E., Moore, J. G., Bruner, E. C,

Jr., Silverman, S. M., 3836. Cross, J. L., (1963) Mono.65.

Cross, J. R., 5956. Cross, P. C, Allen, H. C, Jr., 5493. Crow, E. L., 3165; 3422; 5176. Crow, E. L., Bardivell, G. E., 5895; 6744. Crow, E. L., Morgan, A. H., Blair, B. E., J 69D7-524, 905 (1965) ; 6810.

Crow, E. L., Zacharisen, D. H., 3829. Crowell, W. E., Caul, H. J., Kimmel, W. D., Paffenbarger, G. C, 6003. Crown, E. L., 6481. Cruz, J. E., Brooke, R. L., 6576. Cruz, J. E., Davies, R., Droppleman, L. K., Marovich, E., Megill, L. R., Rees, M. H., Reisbeck, L., Roach, F.

E., (1965) TN308.

Cruz, J. E., Megill, L. R., Jamnick, P. M., 3759. Cullen, A. L., J 64D5-89, 509 (1960); J 69D2-452, 177

(1965).

Cullen, W. C, (1965) Mono.89; (1963) TN231; 3142;

4411.

Cullen, W. C, Appleton, W. H., 5310. Culshaw, W., 3568; 4181; 4282. Culshaw, W., Richardson, J. M., Kerns, D. M., 3719A. Cunningham, J. A., Hill, R. L., (1960) TN68 (PB161-

569). Cunningham, J. A., Meissner, P., Kettering, C. A., Currie, C. L., Okabe, H., McNesby, J. R., 5840. Currie, L. A., France, G. M., Ill, Mullen, P. A., 6331. Currie, L. A., France, G. M., Ill, Steinberg, H. L., 8977. Currin, J. D., Denison, A. B., James, L. W., Tanttila, W. H., Mahler, R. J., 6517.

Curtis, A. J., J 65A3-101, 185 (1961) ; 3502; 4038; 4582; 4583; 6017.

Curtis, A. J., Scott, A. H., Scheiber, D. J., Lauritzen,

J. I., Jr., Hoffman, J. D., J 66A4-162, 269 (1962).

Curtis, G. W., Neivkirk, G. A., Watson, D. K., Manning,

R., Shelby, J., 3335A.

Curtis, W. L., J 68D7-378, 813 (1964).

Curtis, W. L., Coe, R. J., J 68D2-339, 251 (1964).

Cnrtiss, L. F., 5520.

Cuthill, J. R., Wyman, L. L., Moore, G. A., Park, J. J., Yakowitz, H., J 66A4-171, 351 (1962).

Cuthill, ./. R., Wi/man, L. L.. Yakowitz, H., 5473.

Cuthill, J. R., Yakowitz, H., (1962) Mono.52. Cutkosky, R. D., J 65A3-97, 147 (1961); J 68C4-168, 227 (1964) ; J 68C4-177, 305 (1964) ; 6083. Cutkosky, R. D., Driscoll, R. L., 5458. Cutkosky, R. D., Harris, F. K., 4270. Cutkosky, R. D., Lampard, D. G., 3777. Cutkosky, R. D., Lee, L. H., J 69C3-196, 173 (1965);

5259. Cutkosky, R. D., Shields, J. Q., 3857. Cutler, C. C, Pierce, J. R., J 68D5-365, 673 (1964). Czernin, W., (1962) Paper V-S3, Mono.43, Vol. II, p. 725. D

Dade, E. C, Goldberg, K., 3332. Dahl, S., 4529; 6685; 6690. Dahl, S., Kaplan, A. M., 3666; 4036. Dale, A. G., Dale, N., (1965) M269, p. 230. Dale, N., Dale, A. G., (1965) M269, p. 230. Dalgamo, A., Seaton, M. J., Pecker, C, (1961) TN124

(PB161625).

Dalke, J. L., (1963) M248, p. 55; 5594. Daniel, E. D., 5531. Daniel, E. D., Levine, I., 3500; 3539. Danielcsson, U., (1962) Paper IV-S7, Mono.43, Vol. I, p. 519. Danielson, B. L., Harrington, R. D., 3407. Danncmiller, M. C, Nimeroff, I, Rosenblatt, J. R., J

65A6-129, 475 (1961) ; 5116. Danncmiller, M. C, Zelen, M., 3437; 4283. Danos, M., 4227. Danos, M., Greiner, W., 5979; 5980; 6002; 6456; 6675;

9005. Danos, M., Greiner, W., Kohr, C. B., 6258; 6710; 9072. Danos, M., Maximon, L. C, 6877. Danos, M., Spokas, O. E., 4628. Danos, M., Stovall, T., 5515. Darling, W. R., J 66C4-106, 313 (1962). Darling, W. R., Washer, F. E., J 66C3-95, 185 (1962);

J 67C4-142, 311 (1963) ; 5549. 420
da Rosa, A. V., Bhonsle, R. V., Garriott, 0. K., J 69D7-

526, 929 (1965). Darwent, B. dcB., Brown, L. M., 9030. Darwent. B. deB., Jackson, W. M., McXesby, J. R., 4881

;

5076. Datta, S. P., Grzybowski. A. A"., Bates, R. G., 6359. David, R. M.. Hears. T. W., Howard, F. L., 3879. Davies, E., Calvert, W., Stiltncr, E., Brown, J. T., 4639. Davies, K., (1965) Mono.80; 3405; 4245; 4550; 4604;

4605; 4717; 5019; 5303; 6306; 6490; 6816; 9104. Davies, K., Agxj, V., 4413; 5314. Davies, K., Baker, D. M., 6815. Davies, K., Calvert, W., Stiltner, E. C, Brown, J. T., 5338. Davies, K., King, G. A. M., J 65D4-136, 323 (1961). Davies, K., Knecht, R. W., 4235; 4292; 4332. Davies, K., Saha, A. K., 4954. Davies, K., Salaynan, R., Agy, V., J 65D1-100, 35 (1961)

.

Davies, K., Watts, J. M., 3739. Davies, K., Watts, J. M., Zacharison, D. H., 4446. Davies, R., Cruz, J. E., Droppleman, L. K., Marovich,

E. , Megill, L. R., Rees, M. H., Reisbeck, L., Roach,

F. E., (1965) TN308.

Davies, R. 0., 3 70B1-169, 83 (1966). Davis, E. R., Freeze, P., Caldwell, F. R., 4888. Davis, J. C, Achenbach, P. R., 4828; 5256A; 6597. Davis, J. C, Achenbach, P. R., Smith, W. T., (1962) Mono.51.

Davis, J. C, Faison, T. K., Achenbach, P. R., J 70C1-218, 25 (1966) ; 8944. Davis, J. R., Rohlfs, D. C, Skaggs, G. A., Joss, J. W., J 69D12-619, 1659 (1965). Davis, M., Gilmore, B., Freis, E., 5401. Davis, M. M., 639 A; 4536. Davis, M. M., Hetzer, H. B., J 65A3-103, 209 (1961). Davis, M. M., Paabo, M., J 64A6-78, 533 (1960) ; J

67A3-211, 241 (1963); 3418. Davis, M. M., Paabo, M., Robinson, R. A., J 64A6-77,

531 (1960). Davis, M. M., Paabo, M., Robinson, R. A., Bower, V. E., J 64A4-57, 347 (1960). Davis, M. M., Riddick, J. A., Fritz, J. S., Hillenbrand, E. F., Jr., Markunas, P. C, 604A.

Davis, P. J., (1964) AMS55, p. 253; 5553. Davis, P. J., Bazley, N. W., J 64B-36, 311 (1960). Davis, P. J., Haynsworth, E., Marcus, M., J 65B1-42,

13 (1961). Davis, P. J., Polonsky, I., (1964) AMS55, p. 875. Davis, P. J., Rabinowitz, P., 3778; 3964; 4297. Davis, R. D., Gardner, F. F., J 69D12-605, 1613 (1965). Davis, R. M., Bailey, D. K., Cottony, H. V., Kirby, R. C,

Norton, K. A., Slutz, R. J., Merrill, R. G., 3737. Davis, R. M., Jr., Smith, E. K., Ellyett, C D., 3310A.

Davis, R. M., Jr., Blair, J. C, Kirby, R. C, J 65D5-146, 417 (1961). Davis, S. P., Porter, T. L., 5395. Davis, T. L., (1966) TN334.

Davis, T. L., Doherty, R. H., 3913A.

Davis, T. L., Linifield, R. F., Hefley, G., J 65C1-53, 43

(1961). Davis, T. N., Smith, L. L., 6547. Day, G. F., Streever, R. L., Bennett, L. H., LaForce,

R. C, 4794; 5521. Daywitt, W. C, Estin, A. J., Trembath, C. L., Wells,

J. S., 3414; 4463. Daywitt, W. C, Miller, C. K. S., Campbell, E., 5897;

6530. Daywitt, W. C, Wells, J. S., Miller, C. K. S., 4750; 6198. De, M., Mondal, P. K., J 69C3-200, 199 (1965). Deam, A. P., LaGrone, A. H., Walker, G. B., J 68D8-387,

895 (1964). Dean, J. W., (1961) TN120; (1962) TN120A.

Dean, J. W., Chelton, D. B., Birmingham, B. W., 3469;

5662. Dean, J. W., Kreith, F., Brooks, L., 5261A. Dean, J. W., Mann, D. B., (1965) TN227.

Dean, J. W., Miller, C. E., Flynn, T. M., 6644.

Dean, J. W., Timmerhaus, K. D., 5819. Dean, J. W., Timmerhaus, K. D., Drayer, D. E., 3969. Dc Barbicri, 0., Caldirola, P., J 69D1-441, 33 (1965). Decauz, B., Gabry, A., J 68D1-312, 21 (1964). Decius, J. C, Maki, A., 3368. Decker, M. T., (1962) TN134 (PB161635) ; 4746. Decker, M. T., Hartrnan, W. J., J 65D5-148, 433 (1961) ; (1963) TN126; 4186. DcFore, M. R., Corah, H. J., 3408A.

DeGregorio, J. F., Finney, J. W., Kildahl, K., Smith,

E. K., 4886. . deGroot, J. H., Swanson, H. E., Cook, M. I., Evans,

E. H., (1960) C539, Vol. 10. Deirmendjian, D., J 69D6-523, 893 (1965).

Deitz, V. R., 3324.

Deitz, V. R., Carpenter, F. G., 3951; 4373; 4557; 4882;

5227; 5680; 5700.

Deitz, V. R., Carpenter, F. G., Arnold, R. G., 6145.

Deitz, V. R., Carpenter, F. G., Larry, D., 4716; 5791.

Deitz, V. R., Little, R. C, Carpenter, F. G., 4677.

Detiz, V. R., Lopez, J., Carpenter, F. G., 3962.

Deitz, V. R., McFarlane, E. F., 5365; 5754; 6121.

Deitz, V. R., Peiperl, M. D., Carpenter, F. G., 4346.

Deitz, V. R., Rootare, H. M., 3295.

Deitz, V. R., Rootare, H. M., Carpenter, F. G., 4293;

4571; 4914; 6485. DeKlerk, D., Hudson, R. P., 641A. DeKoranyi, A., Ogburn, F., Bechtoldt, C. J., Morris,

J. B., 9048. DeLauer, D., (1963) M248, p. 165. DeLaVergne, R., Aitken, J. H., Henry, W. H., Loftus,

T. P., 4538. Delavignette, P., Kirkpatrick, H. B., Amelinckx, S., 4041.

Dellinger, J. H., J 65D4-134, 317 (1961). DeMar, R. F., 6574; 8907. de Marchin, P., Tyras, G., J 69D4-489, 529 (1965). Demaree, N. C, Taylor, D. F., 4864. deMastus, H., Wood, M., 3764. Deming, L. S., J 64B3-34, 175 (1960) ; J 66B1-69, 15 (1962) ; J 66B3-80, 109 (1962); J 67B2-97, 91 (1963) . Deming, L. S., Eisenhart, C, Martin, C. S., (1963) TN191.

Deming, L. S., Gupta, D., J 65B1-46, 61 (1961). Denis, S. F., (1965) M269, p. 61. Denison, A. B., James, L. W., Currin, J. D., Tanttila, W. H., Mahler, R. J., 6517. Denison, J. S., Norton, R. B., VanZandt, T. E., 4426;

5144. Dennis, A. S., J 66D3-196, 285 (1962). Dennis, A. S., Pierce, E. T., J 68D7-375, 777 (1964). Denton, D. H., King, R. W. P., Harrison, C. W., J 65D4-

141, 371 (1961). Denton, G. B., Paffenbarger, G. C, 3808. de Pinho, A. G., Barloutaud, M., Caswell, R. S., Gastebois, J., Quidort, J., 6334. Derman, C, (1964) TN238, p. 3. Derman, C, Cameron, J. M., (1964) TN238, p. 1. Desch, R. F., Larson, R. E., 4508; 5214. Deschamps, G. A., J 69D3-476, 395 (1965) ; J 64D6, 598

(1960).

Deslattes, R. D., Brumberger, H., J 68C3-161, 173

(1964) . Deslattes, R. D., Johnson, H., 8959.

Deslattes, R. D., Simson, B. G., Horton, A. T., 9013.

Deslattes, R. D., Torgensen, J. L., Paretzkin, B., Horton, A T 8955 DeSouza, P. D., Snow, G. A., Meshkov, S., 6415. Dessler, A. J., J 68D5-363, 603 (1964). Dettorre, J. F., Knorr, T. G., Vaughan, D. A., (1964) M256, p. 245. Devenney, J. H., Sopka, J. J., (1963) TN203.

Dever, D. F., Mann, D. E., White, D., Seshadri, K. S., Linevsky, M. J., 5763. DeVoe, J. R., (1964) TN248; (1966) TN276; 4256;

4495; 6700. 421
DeVoe, J. R., Landgrebe, A. R., McClendon, J. R., 9050. DeVoe, J. R., Meinke, W. W., 5665. DeVoe, J. R., Nass, H. W., Meinke, W. W., 4257. DeVoe, J. R., Ruck, R. R., Meinke, W. W., 4258. DeVoe, J. R., Ruegg, F. C, Spijkerman, J. J., 6708. de Vote, R. V., Roa, K. N., Plyler, E. K., J 67A4-225,

351 (1963). DeWane, H. J., Brodd, R. J., (1963) TN190; 5398; 6789. deWit, R., (1963) Mono.59, p. 13; 5533; 6703; 9070. deWit, R., Howard, R. E., 8988. DvWitt, D. P., 6642. DeWitt, D. P., Richmond, J. C, Dunn, S. T., Hayes, W. D., Jr., (1966) TN267.

DeWitt, D. P., Richmond, J. C, Hayes, W. D., Jr., (1964) TN252. Dhumwad, R. K., Bass, A. M., 5136. Diamond, J. J., 6478. Diamond, J. J., Efimcnko, J., Hampson, R. F., Walker,

R. F., 3741A. Diamond, J. J., Schneider, S. J., 3432. Diamond, J. J., Szwarc, R., Plante, E. R., J 69A5-363,

417 (1965).

Diaz, J. B., Goldman, A. J., Metcalf, J. B., J 68B4-127,

147 (1964).

Dibeler, V. H., Herron, J. T., J 65A5-120, 405 (1961) ; 3321; 3523; 3593; 3624; 4163.

Dibeler, V. H., Krauss, M., Reese, R. M., Harllee, F. N., 6843.

Dibeler, V. H., Reese, R. M., J 68A4-289, 409 (1964) ; 3625; 6193. Dibeler, V. H., Reese, R. M., Franklin, J. L., 4162.

Dibeler, V. H., Reese, R. M., Krauss, M., 6845. Dibeler, V. H., Rosenstock, H. M., 5459; 5475.

Dibeler, V. H., Rosenstock, H. M., Harllee, F. N., 6137. Dibeler, V. H., Shields, W. R., Craig, D. N., 3412; 3413. Dibeler, V. H., Shields, W. R., Garner, E. L., J 66A1-135,

1, (1962).

Dibeler, V. H., Shields, W. R., Murphy, T. J., Garner,

E. L., 4461. Dick, C. E., Motz, J. W., Placious, R. C., 5270. Dicke, R. H., Alley, C. 0., Bender, P. L., Fuller, J. E., Plotkin, H. H., Wilkinson, D. T., 8927. Dickinson, J. A., 676A.

Dickson, G., Hartley, J. L., Hudson, D. C., Sweeney, W. T., 2197A.

Dickson, G., Huff, R. L., Barone, J. J., 4334. Dickson, G., Miller, W. A. C., Jr., Hansen, W. C., Sweeney, W. T., 3713; 3730. Dickson, G., Rodriguez, M. S., 4928. Dickson, G., Waterstrat, R. M., 6694. Dickson, R. W., Wachtman, J. B., Jr., Peiser, H. S., J

67A5-229, 395 (1963). Dicde, A., Chilton, C. J., Radicella, S., 6510. Digges, T. G., 304A; 4279. Digges, T. G., Rosenberg, S. J., (1960) Mono.18.

Diller, D. E., 6857.

Diller, D. E., Goodwin, R. D., Hall, W. J., Roder, H. M., Weber, L. A., Younglove, B. A., 6414.

Diller, D. E., Goodwin, R. D., Roder, H. M., Weber,

L. A., J 67A2-204, 173 (1963); J 68A1-260, 121

(1964) ; 4347.

Diller, D. E., Roder, H. M., Weber, L. A., Goodwin,

R. D., 5779.

Diller, D. E., Weber, L. A., Roder, H. M., Goodwin,

R. D., 5067.

Diller, D. E., Younglove, B. A., 5046; 5047. DiMarzio, E. A., J 68A6-308, 611 (1964) ; 6557; 8963. DiMarzio, E. A., Hoeve, C. A. J., Peyser, P., 6586. DiMarzio, E. A., McCrackin, F. L., 6554. Dimoff, T., Payne, B.F., J 67C4-144, 327 (1963).

Diorio, A. F., Gornick, F., Mandelkern, L., Roberts, A. E., 6054.

Diorio, A. F., Lippincott, E. R., Mandelkern, L., 4539.

Diorio, A. F., Mandelkern, L., Canty, G., 5773.

Diorio, A. F., Mandelkern, L., Halpin, J. C, 4759.

Diorio, A. F., Mandelkern, L., Halpin, J. C, Posner, A. S., 4588.

Diorio, A. F., Mandelkern, L., Lippincott, E. R., 4848.

Diorio, A. F., Mandelkern, L., Meyer, W. T., 4615.

Diorio, A. F., Mandelkern, L., Posner, A. S., Roberts, D. E„ 4153.

Diorio, A. F., Mandelkern, L., Roberts, D. E., Posner, A. S., 3183. Diorio, A. F., Posner, A. S., Mandelkern, L., Worthington, C. R., 3606. Dise,J. R., 3330A; 4840; 6433.

Disc, J. R., Bean, B. L., (1961) Mono.28.

Dishon, M., Weiss, G. H., J 70B1-171, 95 (1966). Disney, R. T., Crichlow, W. Q., J 68D5-363, 600 (1964). Disney, R. T., Crichlow, W. Q., Jenkins, M. A., TN18-3

to 18-26. Disney, R. T., Crichlow, W. Q., Spaulding, A. D., Roubique, C. J., (1960) Mono.23. Ditmars, D. A., Furukawa, G. T., J 69C1-183, 35 (1965). Dixon, H. D., Ross, G. S., J 64C4-45, 271 (1960);

J 67A3-212, 247 (1963). Dixon, H. D., Ross, G. S., Frolen, L., Termini, D. J., 5577. Dobrott, D., Ishimaru, A., J 65D1-102, 47 (1961). Dodge, W. R., Domen, S. R., Hirshfeld, A. T., Hoppes,

D. D., 5921; 6813. Doepker, R. D., Ausloos, P., 6770; 8940; 9080. Doherty, L. H., J 67D6-306, 765 (1963). Dohcrty, R. H., 5350. Doherty, R. H., Davis, T. L., 3913A.

Doherty, R. H., Hefley, G., Berger, E. L., 3133. Doherty, R. H., Hefley, G., Linfield, R. F., J 65D2-114,

157 (1961) ; 4391; 5089A.

Doherty, R. H., Jean, A. G., Hornback, C. E., Winkel- man, J. R., Moore, R. T., 9057. Domalski, E. S., Armstrong, G. T., J 69A2-335, 137

(1965). Domen, S. R., Dodge, W. R., Hirshfeld, A. T., Hoppes,

D. D., 5921; 6813. Domen, S. R., Pruitt, J. S., J 66A5-172, 371 (1962) ; J 68A6-319, 703 (1964); (1962) Mono.48. Donadio, R. E., Wall, L. A., Pummer, W. J., 3721. Donnert, H. J., Koch, H. W., Havens, W. W., Jr., Rogosa,G. L., Rosen, L., (1966) TN283.

Doran, J. A., Erteza, A., Lenhert, D. H., J 69D2-468,

317 (1965). Dorsey, W. W., Ruegg, F. W., J 66C1-87, 51 (1962);

5836. Doudnikoff, B., Conner, A. N., Jr., (1965) M269, p. 177. Dougherty, H. T., (1964) TN302; 5149; 6067. Dougherty, H. T., Johnson, M. E., (1964) TN228.

Dougherty, H. T., Kirby, R. S., McQuate, P. L., 1421A. Dougherty, H. T., Moloney, L. J., J 68D2-338, 239

(1964). Dougherty, J. P., Farley, D. T., Jr., 5172. Dougherty, R. H., 5525. Douglas, C. A., Nimeroff, I., 3507. Douglas, T. B., J 67A5-230, 403 (1963); 3492; 4596; 5145; 6400. Douglas, T. B., Beck, R. L., 5084. Douglas, T. B., Furukawa, G. T., 5380. Douglas. T. B., Furukawa, G. T., Saba, W. G., Victor, A. C, J 69A5-364, 423 (1965). Douglas, T. B., Harman, A. W., J 69A2-336, 149 (1965). Douglas, T. B., Victor, A. C, J 65A2-92, 105 (1961); J 65C1-56, 65 (1961) ; J 67A4-221, 325 (1963). Dove, R. B., Ambler, E., 4015. Dove, R. B., Ambler, E., Kaeser, R. S., 5134. Doviak, R., Lombardini, R. P., Goldhirsh, J., J 69D7-533,

989 (1965). Doyle, L. B., (1965) M269, p. 15. Doyle, L. R., Wachtman, J. B., Jr., 6148. Doyle, P. E., Alexander, S. N., 6649. Drake, F. D., J 69D12-597, 1577 (1965) ; J 69D12-606,

1613 (1965). Drane, C. J., J 64D6, 743 (1960). Drapeau, F. J. J., Achenbach, P. R., Kusuda, T., 4743. Drapeau, F. J. J., Achenbach, P. R., Phillips, C. W.,

3532; 4322; 4637. 422
Drayer, D. E., 8903. Drayer, D. E., Flynn, T. M., (1961) TN108 (PB161-

609); (1961) 'TN109 (PB161610) ; (1961) TN110

(PB161611).

Drayer, D. E., Timmerhaus, K. D., 4483. Drayer, D. E., Timmerhaus, K. D., Dean, J. W., 3969. Drazin, M. /'., Haynsworth, E. V., 4555. Dressier, K., 3152; 4397.

Dressier, K., Schncpp, 0., 3416; 3416A; 3711.

Driscoll, R. L., 6034.

Driscoll, R. L., Cutkosky, R. D., 5458.

Driscoll, R. L., Snow, C, J 69C1-184, 49 (1965). Droppleman, L. K., Davics, R., Cruz, J. E., Marovich,

E., Megill, L. R., Rces, M. H., Reisbeck, L., Roach,

F. E., (1965) TN308.

Droppleman, L. K. , Megill, L. R., 4953. Droppleman, L. K., Megill, L. R., Calfee, R. F., (1963) TN178.

Droppleman, L. K., Megill, L., Rces, M. H., 5317. Droppleman, L. K., Shafcr, A. B., Megill, L. R., 6276.

(Ui Castel, F., Misme, P., Spizzichino, A., Voge, J., J 66D3-195, 273 (1962). Dudley, R. M., Wagman, D. D., Evans, W. H., Halow,

I., 5728. Dueckcr, H. C, Holler, W., J 64A6-76, 527 (1960) ; 4577. Dueeker, H. C, Lippincott, E. R., 6312. Duff, G. L., Mittra, R., J 69D5-503, 681 (1965).

Duff, R. H., Burnett, H. C, Vacher, H. C, J 66C2-92, 113 (1962).

Duff, R. H., Vacher, H. C, Burnett, H. C, 3901. Duncan, B. C, J 66A1-144, 83 (1962). Duncan, R. A., 5103. Duncan, R. A., Roach, F. E., Barbier, D., 4797. Duncan, R. H., J 66D2-186, 181 (1962). Duncan, R. H., Hinchey, F. A., J 64D5-95, 569 (1960). Dunfee, B. L., J 67C1-114, 1 (1963) ; 3402; 9068. Dunfee, B. L., Moore, W. J. M., 6594. Dunkin, D. B., Ferguson, E. E., Fehsenfeld, F. C,

Schmeltekopf, A. L., Schiff, H. I., 6173. Dunlap, L. A., George, D. A., Stone, P., 5579. Dunlap, L. A., Plitt, K. F., 3373; 3408. Dunn, A. F., Sze, W. C., Zapf, T. L., 6595. Dunn, G. H., 4491; 6407. Dunn, G. H., Geballe, R., Pretzer, D., 4861. Dunn, G. H., Keiffer, L. J., 5300. Dunn, G. H., VanZyl, B., Zare, R. H., 6706. Dunn, J. L., Evenson, K. M., Broida, H. P., 6270. Dunn, S. T., (1965) TN279.

Dunn, S. T., Richmond, J. C., DeWitt, D. P., Hayes, W. D., Jr., (1966) NBS267.

Dunn, S. T., Richmond, J. C., Weibclt, J. A., J 70C2-

221, 75 (1966). Durany, G., Brauer, G. M., Argentar, H., J 68A6-309,

619 (1964). Durst, R. A., Taylor, J. K., J 68A6-310, 625 (1964) ; J 69A6-372, 517 (1965). Dutton,E.J., (1961) TN96 (PB161597).

Dutton, E. J., Bean, B. R., (1961) Mono.92; J 69D6-522,

885 (1965) ; 4010. Dutton, E. J., Bean, B. R., Frank, V. R., Lane, J. A., Sweezy, W. B., 5159. Dutton, E. J., Bean, B. R., Lane, J. A., Sweezy, W. B., J 67D6-293, 605 (1963). Dutton, E. J., Bean, B. R., Westivater, E. R., 5935. Dutton, E. J., Thayer, G. D., (1961) TN97 (PB161598).

Dutz, H., Lehmann, H., (1962) Paper IV-S6, Mono.43,

Vol. I, p. 513. Dvoretzky, A., Erdos, P., 787A.

Dyce, R. B., J 69D12-613, 1628 (1965). Dyce, R. B., Booker, H. G., J 69D4-484, 463 (1965). Dyson, J. D., J 66D1-168, 1 (1962). E

Eagles, D. M., 6294; 8945. Eanes, E. D., Ondik, H. M., 5052. Earnshaw, K. B., Benedict, C. M., J 66C4-105, 297

(1962).

Earnshaw, K. B., Boublil, Y., 6316. Earnshaw, K. /.'., Jones, D. L., (1962) TN148 (PB161-

469). Earnshaw, K. B., Nakagawa, Y., 5353. Eaton, H. N., French, J. L., 538A.

Eaton, H. N., Wylu, R. S., (1961) Mono.31; 463A. Eberhard, J. P., 5944; 8994.

/•Jbisn-.aki, h\, Jnrmain, W. R., Nicholls, R. W., 3549. Eby, R. K., J 68A3-272, 269 (1964) ; 5987; 5990. Eby, R. K., Bolz, L. H., J 69A5-369, 481 (1965). Eckcrle, K. L., Berg, H. F., Burris, R. W., Wiese, W. L., 6344. Eckert, C. A., Prausnitz, J. M., 6401. Ecklund, W. L., 5875. Ecklund, W. L., Hargreaves, J. K., Pope, J. H., 8919. Ecklund, W. L., Hudson, P. A., Ondrcjka, A. R., 4754. Eddy, J. A., (1963) TN184.

Edelman, S., Cook, R. K., Koidan, W., 6621. Edclman, S., Jones, E., Size-more, K. S., 3991; 4512. Edelman, S., Schmidt, V. A., Smith, E. R., Jones, E., 4209. Edclman, S., Schmidt, V. A., Smith, E. R., Pierce, E. T., 4779. Edens, V. C, Koch, J. A., (1964) TN226.

Edlow, M. H., Cataland, G. H., Plumb, H. H., 4146;

4885; 4990. Edlow, M. H., Plumb, H. H., 4277; 4900. Edlow, M. H., Plumb, H. H., Cataland, G. H., 3861. Edmiston, C, Krauss, M., 6653. Edmunds, D. K., Smith, R. V., Brentari, E. G., Richards,

R. J., 5917. Echnonds, J., J 68B2-120, 73 (1964) ; J 69B1&2-134, 67 (1965); J 69B1&2-135, 73 (1965); J 69B1&2-142,

121 (1965) ; J 69B1&2-143, 125 (1965) ; 4553; 8933. Edmonds, J., Fulkerson, D. R., J 69B3-145, 147 (1965). Edmonds, J., Goldman, A. J., Witzgall, C, Zahn, C. T., Jr., 6246. Edmonds, A"., Richards, R. J., Jacobs, R. B., 4676. Edmundson, H. P., (1965) M269, p. 41. Edsivger, R. E., Guildner, L. A., J 69C1-180, 13 (1965). Edwards, H. D., Rosenberg, N. W., Wright, J. W., 6164. Edwards, J. W., Ruehrwein, R. A., Hashman, J. S., 3463. Efimenko, J., Diamond, J. J., Hampson, R. F., Walker,

R. F., 3741A.

Efimenko, J. E., Gingerich, K. A., 5080. Efimenko, J. E., Gingerick, K. A., Lee, J. E., 5843. Efimenko, J., Walker, R. F., Lofgren, N. L., 4261. Ehrlich, M., J 65C3-72, 203 (1961) ; 1411A; 3865; 4606;

5837; 6629. Ehrlich, M., Fitch, S. H., 286A.

Ehrlich, M., McLaughlin, W. L., 4223. Ehrlich, M., McLaughlin, W. L., Zeitler, E., 6333. Eichberg, R. L., 441A.

Eichherger, L. C, Schweppe, J. L., Muster, D. F., Michaels, E. L., Paskusz, G. F., (1963) Mono.67.

Eicke, W. G., Jr., (1964) TN244; 5069; 5247; 6188;

6467. Eicke, W. G., Jr., Brodd, R. J., J 66C2-89, 85 (1962).

Einstein, J. C, 5809. Eisenhart, C, J 67C2-128, 161 (1963) ; (1963) M248,

p. 63; 851A; 3770; 4239; 4283A; 4810; 4901A;

6015; 6065; 6465. Eisenhart, C, Deming, L. S., (1964) TN238, p. 13. Eisenhart, C, Deming, L. S., Martin, C. S., (1963) TN191.

Eisenhauer, C, (1960) TN74 (PB161575) ; (1964) Mono.76; 3638; 3763; 5602; 6381; 6593. Eisenhower, E. H., Koch, H. W., 6727A.

Eisenstein, J. C, J 67B3-101, 169 (1963); 3783; 3784;

3960; 3975; 4069; 4159; 4738; 5684; 5685. Eisenstein, J. C, Ambler, E., Schooley, J. F., 5091; 5902. Eisenstein, J. C, Hudson, R. P., Mangum, B. W., 5877; 6185; 6838. Eisenstein, J. C, Pryce, M. H. L., J 69A3-341, 217

(1965) ; J 70A2-392, 165 (1966) ; 3884. Elbourn, R. D., Ware, W. H., 4999. 423
Elbourn, R. D., Witt, R. P., 691A.

Elder, P. H., Barsis, A. P., Norton, K. A., Rice, P. L., (1961) TN102 (PB161603).

Eldred, R. A., Lasitter, H. A., Roberts, J., J 68D10-

414, 1145 (1964).

Elias, P., J 64D6, 671 (1960). EUeh, M. A,, Webster, H. L., (196S) M248, p. 171. Ellerbruch, D. A., J 69C1-186, 55 (1965) ; 5916. EUhiyer, G. A., 5269.

Ellis, G. R. A., J 69D12-583, 1513 (1965).

Ellis, P. P., Cornog, J. R., 8934.

Ellyett, C. D., Davis, R. M., Jr., Smith, E. K., 3310A. Emara, S. H., J 65A6-127, 465 (1961) ; J 65A6-128,

473 (1961). Emara, S. H., Teele, R. P., J 67C4-143, 319 (1963). Emmanuel, C. B., Meyer-Arendt, J. R., (1965) TN225. Emmanuel, C. B., Meyer-Arendt, J. R., Herrick, R. B., 5285. Enagonio, D., Ross, G. A., Hewitt, C. A., Glasgow, A. R., J 66A1-140, 59 (1962). Enagonio, D. P., Pearson, E. G., Saylor, C. P., 5082. Engel, 0. G., J 64A6-71, 497 (1960; J 64A6-72, 499 (1960); (1961) TN89 (PB161590) ; 4145; 5396. Engelmann, F., Feix, M., Minardi, E., 5258. Engen, G. F., J 64D6, 596 (1960) ; J 65C2-133 (1961) ; J 68C1-148, 7 (1964) ; J 70C2-223, 125 (1966) ; 3385; 3410; 4454; 4530; 5871; 6150; 6351. Engen, G. F., Beatty, R. W., 3256. Engen, G. F., Beatty, R. W., Anson, W. J., 3629. Engen, G. F., Larsen, N. T., J 68D5-360, 527 (1964). Englert, A. J., Robbins, D., Editors, (1965) TN263;

(1966) TN287.

Epstein, E. F., Brown, W. E., J 69A6-378, 547 (1965). Epstein, L. F., J 68B1-111, 17 (1964). Epstein, L. F., Hubbcll, J. H., J 67B1-88, 1 (1963). Epstein, W. S., J 68C4-167, 223 (1964). Epstein, W. S., Wachtman, J. B., Tefft, W. E., Lam,

D. G., Jr., 4084. Erdos, P., Dvoretzky, A., 787A.

Erickscn, J. L., 3882. Eriksen, K. W., Gillmor, C. S., Hargreaves, J. K., 6375. Erminy, D., 5163; 5652. Ernst, D. W., Ogburn, F., 3339; 3340; 4366. Ernst, D. W., Ogburn, F., Roberts, W. H., 3341. Erteza, A., Doran, J. A., Lenhert, D. H., J 69D2-468,

317 (1965). Erving, J. J., O'Leary, M. J., Hobbs, R. B., Missimer,

J. K., 998A.

Estin, A. J., 4680. Estin, A. J., Barger, R. L., Broida, H. P., 4608. Estin, A. J., Barger, R. L., Broida, H. P., Radford, H. E., 4818. Estin, A. J., Bussey, H. E., 3534. Estin, A. J., Maryott, A. A., Birnbaum, G., 3669. Estin, A. J., Trembath, C. L., Wells, J. W., Daywitt, W. C., 3414; 4463.

Estin, A. J., Wassink, H. W., 6158. Eubanks, A. G., Moore, D. G., Pennington, W. A., 4619. Eubanks, A. G., Moore, D. G., Thornton, H. R., Hayes, W. D., Jr., Crigler, A. W'., 4324. Eubanks, A. G., Peavy, B. A., 5558. Evans, D. N., Blaine, R. L., Ami, H. T., (1966) BSS5,

Part 2, Section 4. Evans, D. N., Blaine, R. L., Worksman, P., (1962) Paper VI-S3, Mono.43, Vol. II, p. 871. Evans, E. H., Swanson, H. E., Cook, M. I. de Groot,

J. H., (1960) C539, Vol. 10. Evans, E. H., Swanson, H. E., Morris, M. C., Stinchfield, R. P., (1962) Mono.25, Sec. 1; (1963) Mono.

25, Sec. 2. Evans, E. H., Stvanson, H. E., Morris, M. C., Ulmer, L., (1964) Mono.25, Sec. 3. Evans, J. P., Burns, G. W., 4450; 4485; 4987; 9094. Evans, J. V., J 67D1-237, 1 (1963) ; J 69D12-618, 1637

(1965) . Evans, W. H., Wagman, D. D., Halow, I., Dudley,

R. M., 5728.

Evans, W. H., Wagman, D. D., Halow, I., Parker, V. B., Bailey, S. M., Schumm, R. H., (1965) TN270-1;

(1966) TN270-2.

Evenson, K. M., Dunn, J. L., Broida, H. P., 6270. Evenson, K. M., Fehsenfeld, F. C., Brioda, H. P., 6868. Evenson, K. M., Radford, H. E., 6742. Eversole, J. N., (1963) M248, p. 177. F Faison, T. K., Davis, J. C., Achenbach, P. R., J 70C1-

218, 25 (1966) ; 8944.

Poller, J. E., 8998.

Fatter, J. E., Alley, C. O., Bender, P. L., Dicke, R. H., Plotkin, H. H., Wilkinson, D. T., 8927. Fallona, J. P., Ferguson, H. I. S., Nickolls, R. W., 4085A.

Fallona, J. P., Nicholls, R. W'., 3132. Fang, P. H., 3479; 3682; 4375; 5659; 5798. Fang, P. H., Aurivillius, B., 4653. Fang, P. H., Brower, W. S., Jr., 5152; 5291. Fang, P. H., Fatuzzo, E., 4963. Fang, P. H., Robbins, C. R., Aurivillius, B., 4654. Fang, P. H., Stegun, I. A., 3128; 5354. Fano, L., Armstrong, G. T., Jessup, R. S., Marantz, S., Mears, T. W., Walker, J. A., 4785. Fano, L., Hilsenrath, J., Beckett, C. W., Benedict, W. S., Hoge, H. J., Masi, J. R., Nuttall, R. L., Touloukian,

Y. S., Woolley, H. W., 3806. Fano, U., (1960) TN83 (PB161584) ; 3643; 3672; 3742A; 4053; 4135; 4197; 4252; 5556; 5589; 6062; 6179; 6306; 6805. Fano, U., Berger, M. J., 4023. Fano, U., Cooper, J. W., 6787; 6831; 8914. Fano, U., Cooper, J. W., Prats, F., 5235. Fano, U., Lichten, W'., 6812. Fano, V., Prats, F., 5474; 5530; 6206. Fano, U., Prats, F., Goldsmith, Z., 5415. Fano, U., Simpson, J. A., 5234. Fano, V., Spencer, L. V., Berger, M. J., 3280. Fano, U., Turner, J. E., 5975. Fano, U., Zerby, C. D., Berger, M., 4668. Farabaugh, E. N., Barber, D. J., 6701. Farabaugh, E. N., Brower, W. S., Jr., 6745. Farabauah, E. N., Pollack, G. L., 6670. Farago, P. S., Bay, Z., 5636. Faris, J. J., Richardson, J. M., 4079. Farley, D. T., Jr., 5156; 5204; 5833; 6441. Farley, D. T., Jr., Cohen, R., 5957. Paric,i, D. T., Jr., Dougherty, J. P., 5172. Farley, D. T., Jr., Ochs, G. R., Bowles, K. L., Bandyopadhay, P., 5528. Farrar, T. C, Coyle, T. D., 6318. Farrar, T. C, Coyle, T. D., Ritter, J. J., 6308. Farrar, T. C, Whipple, E. B., Brown, T. H., Coyle, T D 8988A

Farren, J., Kirchhoff, W. H., Linnett, J. W., 6618. Fath, J. M., Young, T. D., (1964) M256, p. 349. Fatiadi, A. J., 9004. Fatiadi, A. J., Frush, H. L., Isbcll, H. S., J 64A5-67,

433 (1960).

Fatiadi, A. J., Ishell, H. S., J 67A2-202, 153 (1963);

J 68A3-275, 287 (1964). Fatuzzo, E., Fang, P. H., 4963. Fauske, H. K., Smith, R. V., Isbin, H. S., Petrick, M., Robbins, C. H., Zuludck, F. R., 5981. Fearn, J. E., Brown, D. W., Dowry, R. E., 8970. Fcarn, J. E., Wall, L. A., 5575. Fearn, J. E., Wall, L. A., Pummer, W. J., Antonucci,

J. M., J 67A5-237, 481 (1963). Fearn, J. E., Wall, L. A., Pummer, W. J., Dowry, R. E., J 65A3-107, 239 (1961). Fchlhaber, I. B., Bean, B. R., Grosskopf, J., J 66D5-219,

593 (1962) ; 4876A.

Fehsenfeld, F. C, 5274. Fehsenfeld, F. C, Evenson, K. M., Broida, H. P., 6868. Fehsenfeld, F. C, Ferguson, E. E., Diinkin, D. B., 424
Schmeltckopf, A. L., Schiff, H. I., 6173. Fehsenfeld, F. C, Ferguson, E. E., Goldan, P. D., Schmeltckopf, A. L., 8947. Fehsenfeld, F. C, Ferguson, E. E., Goldan, P. D., Schmeltekopf, A. L., Schiff, H. I., 6824. Fehsenfeld, F. C, Ferguson, E. E., Schmeltckopf, A. L., 6553; 6707. Fehsenfeld, F. C, Schmeltckopf, A. L., Ferguson, E. E., 6659A; 9020.

Feinstein, J.. J 68D5-365, 655 (1964).

Feix, M.. Engelmann, F.. Minardi, E., 5258. Fejer, J. A., J 68D11-417, 1171 (1964).

Fejer, J. A., Calvert, W., 6346.

Fell, H.. Goldman, A. J., 8982.

Fell, H.. Newman, .17., Ordman, E., J 67B1-93, 61

(1963).

Fellers, R. G„ J 68D5-360, 538 (1964).

Felsen, L. B., J 68D4-359, 480 (1964) ; J 69D2-450, 155

(1965).

Felsen. L. B., Gross, S. H., J 69D3-469, 333 (1965).

Felsen. L. B., Marcinkowski, C. J., J 66D6-229, 699

(1962) ; J 66D6-230, 707 (1962). Felsen, L. B., Sicgel, K. M., J 64D6, 707 (1960).

Felsen, L. B., Weston, V. H., J 68D4-359, 490 (1964). Fenstermaker, C. A., Smith, J. C., 9046. Fenstermakcr, C. A., Smith, J. C., Shouse, P. J., J 68C3-

162, 177 (1964); 5212; 5706; 9047. Femvick, R. B., Croft, T. A., J 67D6-302, 735 (1963). Ferguson, E. E., 6132. Ferguson, E. E., Broida, H. P., 5948; 6556. Ferguson, E. E., Fehsenfeld, F. C, Dunkin, D. B., Schmeltekopf, A. L., Schiff, H. I., 6173. Ferguson, E. E., Fehsenfeld, F. C, Goldan, P. D., Schmeltekopf, A. L., 8947. Ferguson, E. E., Fehsenfeld, F. C, Golden, P. D., Schmeltekopf, A. L., 8947. Ferguson, E. E., Fehsenfeld, F. C, Goldan, P. D., Schmeltekopf, A. L., Schiff, H. I., 6824. Ferguson, E. E., Fehsenfeld, F. C, Schmeltekopf, A. L., 6553; 6659A; 6707; 9020. Ferguson, E. E., Green, R. G., (1964) TN222.

Ferguson, H. I. S., Fallona, J. P., Nicholls, R. W., 4085A.

Ferguson, J. F., Smith, R. V., Wergin, P. C, 5064. Ferguson, R. E., McCulloh, K. E., Rosenstock, H. M.,

8905.

Ferris, C. D., (1963) M248, p. 91. Fetters, L. J., J 69A1-325, 33 (1965) ; J 69A2-337, 159

(1965) ; 6370. Fey, L., Atkinson, W. R., Newman, J., 5131 ; 5683 ; 5955

;

6237. Fey, R. L., Barnes, J. A., 5719. Fey, R. L., Milton, J. B., Morgan, A. H., 4894. Fey, R. L., Richardson, J. M., Beehler, R. E., Mockler,

R. C, 4501. Filban, T., Shafer, M. R., 6072A.

Fine, J., Madey, T. E., Sheer, M. D., 9069. Fine, J., Scheer, M. D., 4563; 4636; 5435; 5436; 5767; 9054; 9096. Finegold,H., 3797; 3874; 4910, 6223. Finegold, H., Ktvart, H., 4982. Finney, J. W., Bateman, R., Smith, E. K., Tveten, L. H., Watts, J. M., 3362. Finney, J. W., DeGregorio, J. F., Kildahl, K., Smith, E K 4886

Finney'..J. w'., Smith, E. K., 3704; 3705.

Fires, E., Higgins. T. F., Morowitz, H. J., 898A.

Fischer, G. L., Pollack, D. K., Roddick, B., Stevens, M. S., 4816. Fishbum, C. C, (1961) Mono.36; 3655. Fitch, S. H., Ehrlich, M., 286A.

Fitchen, F., Polk, C, J 66D3-199, 313 (1962).

Fite, W. L., Hummer, D. G., Stebbings, R. R., Branscomb, L. M., 3461.

FitzGerrell, R. G., 8969. Flach, D., Marzctta, L. A., 6623. Fletcher, D., Newman, S. B., 6367.

Fletcher, D. G., Harvey, J. L., Forshee, B. W., 3177. Fletcher, K. D., Midglcy, H. G., Rosaman, D., (1962) Paper II-S2, Mono.43, Vol. I, p. 69. Flippen, R. B., Potter, R. F., Wasilik, J. H., 3632.

Flitsch, R., Alvarez, R., (1965) M260-5.

Flitsch, R., Michaclis, R. E., Wyman, L. L., (1964) M260-2.

Florin, R. E., Brown, D. W., Wall, L. A., 4063; 4662;

4667. Florin, R. E., Parker, M. S., Wall, L. A., J 70A2-387,

115 (1966).

Florin, R. E., Wall, L. A., J 65A4-117, 375 (1961) ; 3283; 4739; 4874; 5331; 5371. Florin, R. E., Wall, L. A., Brown, D. W., J 64A4-49,

269 (1960) ; 3146; 3551; 5332. Florin, R. E., Yoshida, T., Wall, L. A., 9045. Florman, E. F., Tary,J. J., (1962) TN100; 5641. Florman, E. F., Watt, A. D., Plush, R. W., 3388. Flynn, D. R., J 67C2-126, 129 (1963) ; J 68C4-166, 215

(1964). Flynn, J. H., (1960) TN62 (PB161563) ; 4438; 5087. Flynn, J. H., Morrow, W. L., 6013; 6287. Flynn, J. H., Smith, L. E., 4005. Flynn, J. H., Wall, L. A., 4566. Flynn, T. M., 3715; 4323. Flynn, T. M., Alspach, W. J., 6656. Flynn, T. M., Drayer, D. E., (1961) TN108 (PB161-

609); (1961) TN109 (PB161610) ; (1961) TN110

(PB161611).

Flynn, T. M., Miller, C. E., Dean, J. W., 6644. Foley, B. Y., McDonald, E. J., 3746. Foner, S. TV., Mauer, F. A., Bolz, L. H., 3141. Fontana, B. J., 3246. Foote, W. J., Schulze, D. W., U77.

Forman, R. A., 5506. Forman, R. A., hide, D. R., Jr., 5605. Forman, R. A., Payne, R. D., Kahn, A. H., 6897. Formato, D., Gilardini, A., J 66D5-214, 543 (1962). Forshee, B. W., Harvey, J. L., Fletcher, D. G., 3177. Forsythe, G. E., 1267B.

Forziati, A. F., 4658; 4819.

Forziati, A. F., Kmnpula, M. P., 4660.

Forziati, A. F., Kumpula, J. W., Borone, J. J., 5826.

Forziati, A. F., Mancewicz, S. A., Hoerman, K. C, 4916.

Forziati, A. F., Paffcnbarger, G. C, Kumpula, M. P., 3117.

Forziati, A. F., Strassburger, J., Brauer, G. M., Tryon, M., 3427.

Forziati, F. H., Hite, R. T., Wharton, K., 3573.

Forziati, F. H., Wharton, M. K., 4112. Foster, B. E., 3589; 3788. Foster, B. E., Blaine, R. L., Ami, H. T., (1965) BSS2,

Part 1, Sec. 1. Fouquet, B. H., 3185; 5498. Fowler, F. A., 3668; 6171. Fowler, F. A., Marton, L., 9140. Fowler, H. A., Marton, L., Simpson, J. A., Suddeth,

J. A., 4061. Fowler, H. A., Marton, L., Simpson, J. A., Swanson, N., 4844. Fox, D. W., Bazley, N. W., J 65B2-48, 105 (1961); J 66B1-67, 1 (1962) ; J 68D4-129, 173 (1964) ; 4157; 4435; 4731. Fox, D. W., Magnus, W., J 67D2-255, 189 (1963). Fraction, G. F., Tauber, S. J., Hayward, H. W., 6633. France, G. M., Ill, Currie, L. A., Mullen, P. A., 6331. France, G. M., HI, Currie, L. A., Steinberg, H. L., 8977. Franeeschetti, G., Latmiral, G., Vinciguerra, R., J 67D3-

267, 331 (1963). Frank, V. R., Bean, B. R., Lane, J. A., 3 67D6-292, 597

(1963). Frank, V. R., Bean, B. R., Lane, J. A., Sweezy, W. B., 5159. Frankcl, H. E., Bennett, J. A., Carman, C. M., 3541. Frankland, J. M., 3359; 4965. Franklin, A. D., J 67A4-217, 291 (1963); J 69A4-350,

301 (1965) ; 5402; 6738; 6792. 425
Franklin, A. D., Shorb, A., Wachtman, J. B., Jr., J

68A5-290, 425 (1964). Franklin, J. L., Broida, H. P., 3358. Franklin, J. L., Dibeler, V. H., Reese, R. M., 4162. Frantz, F. S., Jr., Wyckoff, H. 0., 3147. Fraser, P. A., Nicholls, R. W., Jarmain, W. R., McEachran, R. P., 3911. Frazer, D. N., Jones, D. L., Gallet, R. M., (1963) TN166

(PB181454).

Frederick, N. V., (1964) TN253, p. 2; 3944. Frederikse, H. P. R., 4266; 5233; 5333; 5601; 5664. Frederikse, H. P. R., Becker, J. H., 4622. Frederikse, H. P. R., Hosier, W. R., 3622. Frederikse, H. P. R., Hosier, W. R., Becker, J. H., 3524A.

Frederikse, H. P. R., Johnson, V. A., Scanlon, W. W., 3356AA.

Frederiske, H. P. R., Kahn, A. H., 3276. Frederikse, H. P. R., Kahn, A. H., Becker, J. H., 6026A.

Frederikse, H. P. R., Mielczarek, E. V., 3354. Frederikse, H. P. R., Thurber, W. R., Hosier, W. R., 6035. Frederikse, H. P. R., Yahia, J., 4055. Freeman, J. J., J 66D6-228, 695 (1962)

.

Freethey, F. E., Thompson, M. C, Jr., Janes, H. B., 3441. Freethey, F. E., Thompson, M. C, Jr., Waters, D. M.,

3201. Freeze, P. D., 5647. Freeze, P. D., Caldwell, F. R., Davis, E. R., 4888. Freeze, P. D., Olsen, L. 0., J 68C4-174, 263 (1964) ; 5081.

Freis, E. D., Broida, H. P., Hufnagel, C. A., Rose, J. C,

1329A.

Freis, E. D., Davis, M., Gilmore, B., 5401. French, J. C, (1964) TN232.

French, J. C, Schafft, H. A., 4907. French, J. L., 6422. French, J. L., Eaton, H. N., 538A.

Frenchette, V. D., (1965) M 257, Paper 2, p. 15. Frenkel, L., J 67C3-129 (1963) ; J 68A2-266, 173

(1964) ; J 68A2-267, 185 (1964).

Frenkiel, F. N., Klebanoff, P. S., 6783; 9122. Fricker, S. J., Ingalls, R. P., Mason, W. C, Stone, M. L., Swift, D. W., J 64D5-81, 455 (1960). Fridinger, T. L., Wright, J. R., Campbell, P. G., 6440;

6474. Friedman, A. S., Haar, L., Beckett, C. W., (1961) Mono.20. Friedman, A. S., Oppcnheim, I., 4251. Friedman, D. C, 3725. Friedman, R., Levy, J. B., 5411. Fries, E. D., Pipberger, H. V., Taback, L., Mason,

H. L., 3722. Frische, R. H., Wait, J. R., Buttlar, H. V., 2525A.

Frischknecht, F. C, Keller, G. V., J 64D5-79, 439

(1960).

Fritsch, V., J 67D2-252, 161 (1963).

Fritz, J. S., Riddick, J. A., Davis, M. M., Hillenbrand,

Jr., E. F., Markunas, P. C, 604A.

Frolen, L. J., Ross, G. S., J 67A6-247, 607 (1963)

.

Frolen, L. J., Ross, G. S., Dixon, H. D., Termini, D. J., 5577. Frost, A. P., Likins, R. C, Posner, A. S., Paretzkin, B., 4046. Frost, W. M., 3873. Frush, H. L., Isbell, H. S., 4474; 4475; 4723; 5182;

5440. Frush, H. L., Isbell, H. S., Fatiadi, A. J., J 64A5-67, 433 (1960). Frush, H. L., Isbell, H. S., Holt, N. B., J 64A4-61, 363

(1960) ; 3956; 4473. Frush, H. L., Isbell, H. S., Moyer, J. D., J 64A4-60, 359

(1960). Frush, H. L., Isbell, H. S., Sniegoski, L. T., 4572; 5106.

Frush, H. L., Sniegoski, L. T., Holt, N. B., Isbell, H. S., J 69A6-376, 535 (1965). Frush, H. L., Sniegoski, L. T., Isbell, H. S., J 65A5-125,

441 (1961). Frush, H. L., Snyder, C. F., Isbell, H. S., Thompson, A., Wolfrom, M. L., 4820. Fulcomer, P. M., Jr., Shapiro, G., Laug, O. B., Rogers,

G. J., (1964) Mono.83. Fulcomer, P. M., Jr., Shapiro, G., Rogers, G. J., Laug,

0. B., 6314. Fulk, M. M., 3204. Fulk, M. M., Hunter, B. J., Kropschot, R. J., 3637. Fulk, M. M., Kropschot, R. H., Schrodt, J. E., Hunter,

B. J., 3656. Fulk, M. M., Reynolds, M. M., Corruccini, R. J., Burley,

R. M., 5626. Fulkcrson, D. R., Edmoyids, J., J 69B3-145, 147 (1965).

Fuller, E. C, 4466.

Fuller, E. G., Ambler, E., Marshak, H., 6699. Fuller, E. G., Hayumrd, E., J 65A5-119, 401 (1961) ; 3415; 3834; 3756; 5001; 5028; 5031. Fullmer, I. H., (1966) M265; 3773. Fulton, F. F., Jr., J 65D3-132, 299 (1961)

.

Fung, A. K., Chia, R. C, Moore, R. K., J 69D4-499, 641

(1965). Funk, H., (1962) Paper III-S7, Mono.43, Vol. I, p. 291. Furukawa, G. T., 4498. Furukaiea, G. T., Ditmars, D. A., J 69C1-183, 35 (1965). Furukawa, G. T., Douglas, T. B., 5380. Furukawa, G. T., Douglas, T. B., Saba, W. G., Victor, A. C, J 69A5-364, 423 (1965). Furukaiva, G. T., McCoskey, R. E., Reilly, M. L., 775A. Furukawa, G. T., Reilly, M. L., J 69A1-321, 5 (1965). Furukawa, G. T.. Reilly, M. L., Piccirelli, M., J 69A4-

286, 381 (1964) ; J 68A6-314, 651 (1964). Furukawa, G. T., Reilly, M. L., Piccirelli, J. H., Teyie- baum, M., J 68A4-285, 367 (1964)

.

Furukawa, G. T., Reilly, M. L., Saba, W. G., 6018. Furukawa, G. T., Saba, W. G., J 69A1-322, 13 (1965). Furutsu, K., (1964) Mono.79; J 67D1-242, (1963);

J 67D3-265, 303 (1963) ; J 69D7-536, 1011 (1965) ; J 69D11-582, 1503 (1965). Furutsu, K., Wilkerson, R. E., Hartmann, R. F., J 68D7-380, 827 (1964).

Fussell, W. B., Stair, R., 8954.

Fussell, W. B., Stair, R., Schneider, W. E., 6564. G Gabry,A.,Decaux,B.,J 68D1-312, 21 (1964). Gadsden, M., 6262; 6263. Gager, W. B., Rice, F. 0., 3279. Gagnon, R., J 68D6-371, 737 (1964).

Galejs, J., J 65D3-133, 305 (1961); J 66D5-214, 557 (1962) ; J 66D5-221, 607 (1962); J 67D2-259, 237

(1963) ; J 67D4-279; 445 (1963); J 68D2-329, 165

(1964) ; J 68D3-348, 317 (1964); J 68D6-367, 693

(1964) ; J 69D2-453, 179 (1965) ; J 69D5-506, 705

(1965) ; J 69D8-538, 1043 (1965).

Galejs, J., Row, R. W., J 68D1-322, 103 (1964). Gallagher, J. S., Burns, G. W., J 70C2-222, 89 (1966). Gallawa, R. L., J 68D11-421, 1201 (1964) ; J 69D6-513, 807 (1965).

Galler, G. M., Hilsenrath, J., (1962) TN125 (PB161626).

Gallet, R. M., J 68D5-363, 615 (1964); 4080; 4253; 5717; 5859; 6221.

Gallet, R. M., Bean, B. R., 3140.

Gallet, R. M., Carson, W. B., Koch, J. A., Pope, J. H., 6833.

Gallet, R. M., Jones, D. L., 4767.

Gallet, R. M., Jones, D. L., Watts, J. M., Frazer, D. N., (1963) TN166 (PB181454).

Gallet, R. M., Jones, W. B., J 66D4-205, 419 (1962) ; J 66D6-225, 649 (1962); (1965) TN305; 3594; 5040; 8993. 416
Gallet, R. M., Richardson, J. M., Wider, B., Ward, G. D., Harding, G. N., 3649.

Gallet, R. M., Utlaut, W. F., 4076.

Gallet, R. M., Watts, J. M., Koch, J. A., J 67D5-290, 569

(1963). Gammon, W. H., 6053. Garcia-Riquelme, 0., Catalan, M. A., Meggers, W. F., J 68A1-252, 9 (1964). Garcia-Rivera, J., Brenner, A., 647A.

Gardner, F. F., Davis, R. D., J 69D12-605, 1613 (1965). Gardner, I. C, 1435A; 2838A; 3369. Gardner, I. C, Ncfflen, K. F., 3383.

Garfield, E., (1965) M269, p. 189. Garfinkel, S. B., Anspach, S. C, Cavallo, L. M., Hutchinson, J. M. R., Smith, C. N., (1965) M260-9.

Garfinkel, S. B., Caswell, R. S., Noyce, R. H., Mosburq,

E. R., Jr., 5631.

Garfinkel, S. B., Hutchinson, J. M. R., 4576.

Garfinkel, S. B., Mann, W. B., Mcdlock, R. W., Yura, 0., 9061.

Garfinkel, S. B., Mann, W. B., Youden, W. J., J 70C2-

219, 53 (1966).

Garfinkel, S. B., Noyce, R. H., Mosburgh, E. R., Jr., Caswell, R. S., 5174. Garland, G. D., Webster, T. F., J 64D4-73, 405 (1960). Garland, W. A., Kroll, W. D., Mordfin, L., 745B. Garner, E. L., Catanzaro, E. J., Murphy, T. J., Shields, W. R., J 68A6-306, 593 (1964)

.

Garner, E. L., Rosholt, J. N., Butler, A. P., Shields, W. R., 6819. Garner, E. L., Rosholt, Harshman, E. N, Shields, W. R., 6166. Gamer, E. L., Rosholt, J. N., Shields, W. R., 6084. Garner, E. L., Shields, W. R., Dibeler, V. H., J 66A1-135,

1 (1962). Garner, E. L., Shields, W. R., Goldich, S. S., Murphy,

T. J., 6880. Garner, E. L., Shields, W. R., Hedge, C. E., Goldich,

S. S., 5718. Garner, E. L., Shields, W. R., Murphy, T. J., J 68A6-

305, 589 (1964). Garner, E. L., Shields, W. R., Murphy, T. J., Catanzaro,

E. J., J 70A2-395, 193 (1966). Garner, E. L., Shields, W. R., Murphy, T. J., Dibeler, V. H., 4461. Garner, E. L., Shields, W. R., Rosholt, J. N., 5433. Garriott, 0. K., Bhonsle, R. V., da Rosa, A. V., J 69D7-

526, 929 (1965).

Garriott, 0. K., Lawrence, R. S., Posakony, D. J., Hall,

S. C, 5806.

Garriott, 0. K., Little, C. G., 3877.

Garriott, 0. K., Rishbeth, H., J 68D3-351, 339 (1964). Garstang, R. H., J 68A1-253, 61 (1964) ; 4686; 5094. Garstang, R. H., Tech, J. L., J 69A5-361, 401 (1965).

Gartlein, C. W., O'Brien, B. J., Van Allen, J. A., Roach,

F. E., 3486; 4018. Garton, W. R. S., Broida, H. P., 903B.

Garvin, D., Bass, A. M., 4489; 6249. Garvin, D., Broida, H. P., 5206. Garvin, D., Broida, H. P., Kostkowski, H. J., 3464; 4520. Gary, R., (1964) TN253, p. 4; 6045. Gary, R., Bates, R. G., J 65A6-132, 495 (1961). Gary, R., Bates, R. G., Robinson, R. A., 6360; 6506;

6704. Gary, R., Robinson, R. A., 6392. Gastebois, J., Barloutaud, M., Caswell, R. S., de Pinho, A. G., Quidort, J., 6334. Gates, D. M., 2730A; 3289; 3565; 3659; 3781A; 3855; 4412; 4500; 4634; 4698; 5444; 5704; 5750; 5855;

6044; 6175; 6630; 9042; 9086. Gates, D. M., Benedict, C. M., 5261. Gates, D. M., Calfee, R. F., Hansen, D. W., 5254; 5255. Gates, D. M., Calfee, R. F., Hansen, D. W., Benedict, W. S., (1964) Mono.71.

Gates, D. M., Harrop, W. ./., 5410. Gates, D. M., Keegan, H. J., Schleter, J. C, Weidner,

V. R., 9028.

Gates, D. M., Parker, J. M., 4285. Gates, D. M., Shaw, C. C, 3839. Gates, D. M., Vetter, J., Thompson, M. C, Jr., 5466. Gauticr, T. N., 3804A ; 6454. Gautier, T. N., Wright, J. W., J 64D4-67, 347 (1960).

Gatttschi, W., (1964) AMS55, p. 295; 3267. Gautschi, W., Cahill, W. F., (1964) AMS55, p. 227. Gaudon, A. (!., Broida, H. P., 811A; 1012A.

Gc'ballc, R., Dunn, H. G., Pretzer, D., 4861. Gebbie, H. A., Plyler, E. K., Yates, D. J. C, 5037. Gee, A., 3305.

Geil, G. W., Carwile, N. L., 3194; 4094.

Geller, S. B., 4798; 4966.

Geller, S. B., Mantek, P. A., J 66C1-86, 45 (1962) ; 4395;

5155.

Geller, S. B., Mantek, P. A., Boyle, D. R., 3929. Geltman, S., 3522; 3592; 3904; 4984; 5305; 6658. Geltman, S., O'Malley, T., 6648. Geltman, S., Rudge, M. R., Seaton, M. J., 5328. Geltman, S., Takayanagi, K., 6061; 6747. Gendrin, R. E., Troitskaya, V. A., J 69D8-543, 1107

(1965). George, D. A., Butzlaff, H. R., Mandel, J., 4341. George, D. A., Dunlap, L. A., Stone, P., 5579. George, D. A., Roth, F., Stone, P., 5580. George, W. D., 5085; 5505; 5699. Georges, T. M., (1965) TN325.

Gerber, E. A., J 64D6, 592 (1960). Gerhold, W. F., Reinhart, F. M., 4944. Gerks, I. H., Anderson, R. M., J 68D11-420, 1193 (1964). Gerstenberg, H., 6348. Gething, P. J. D., J 65D3-122, 225 (1961).

Ghaffari, A., J 65B4-64, 251 (1961) ; 4197A; 4198; 4294; 4497; 4800. Ghose, R. N., Stogryn, A. P., J 68D2-327, 147 (1964).

Giardini, A. A., Lloyd, E. C, 5387; 6200. Giarratano, P. J., Brentari, E. G., Smith, R. V., (1965) TN317.

Gibson, E. F., Powell, R. L., Bunch, M. D., 3616. Gibson, E. F., Powell, R. L., Harden, J. L., 3617. Gibson, J. E., J 69D12-590, 1560 (1965). Gibson, J. E., Corbett, H. H., J 69D12-598, 1577 (1965). Gierhart, G. D., Johnson, M. E., (1965) TN324.

Giesecke, A., Casaverde, M., Cohen, R., 5316.

Gilardini, A., Formato, D., J 66D5-214, 543 (1962).

Gilchrist, R., Clabaugh, W. S., 482A.

Gilchrist, R., Murphy, T. J., Clabaugh, W. S., J 64A4-

59, 355 (1960) ; J 64A6-79, 535 (1960).

Gill, A., J 64D6, 676 (1960).

Gilliland, A. A., J 66A6-179, 447 (1962).

Gilliland, A. A., Johnson, W. H., J 65A1-83, 59 (1961) ; J 65A1-84, 63 (1961); J 65A1-85, 66 (1961).

Gilliland, A. A., Prosen, E. J., Johnson, W. H., J 64A6-

74, 515 (1960).

Gilliland, A. A., Wagman, D., J 69A1-320, 1 (1965).

Gillilland, K. E., Mielenz, K. D., Cook, H. D., Stephens,

R. B., 5902. Gillmor, C. S., Jr., 5743. Gillmor, C. S., Jr., Eriksen, K. W., Hargreaves, J. K., 6375. Gillmor, C. S., Jr., Hargreaves, J. K., 5778. Gilman, J. J., (1963) Mono.59, p. 79. Gilmer, R. O., McGavin, E. C, Bean, B. R., J 69D9-554,

1213 (1965) ; 6475. Gilmore, B., Davis, M., Freis, E., 5401. Gingerich, K. A., Efimenko, J. E., 5080. Gingerich, K. A., Lee, P. K., Efimenko, J. E., 5843. Ginnings, D. C, 3791; 3846; 4849; 5341. Ginnings, D. C, West, E. D., 6111. Giraud, A., J 69D12-622, 1677 (1965). Giron, I., Ogburn, F., 4298. Giuliano, V. E., (1965) M269, pp. 25, 259. Giuliano, V. E., Stevens, M. E., Heilprin, L. B., Editors

(1965) M269.

Gladden, S. C, 4433. Glasgow, A. R., Jr., J 70A2-389, 143 (1966). 427
Glasgow, A. R., Jr., Horton, A. T. J., J 69C3-199, 195

(1965) . Glasgow, A. R., Jr., Ross, G. S., 5887. Glasgow, A. R., Jr., Ross, G. S., Enagonio, D., Hewitt,

C. A., J 66A1-140, 59 (1962). Glasgow, A. R., Jr., Termini, D. J., J 66A2-152, 189

(1962) . Glasgow, A. R., Jr., Timmermans, J., 4233; 4300.

Glaze, D. J., Beehler, R. E., 5347. Glennon, B. M., Wiese, W. L., (1962) Mono.50; (1966) M278.

Glennon, B. M., Wiese, W. L., Smith, M. W., (1966) NSRDS-NBS4, Vol. I. Glover, F. N., (1960) TN82 (PB161583).

Gnieivek, J. J., 5315. Gniewek, J. J., Clark, A. F., 8956. Gnieivek, J. J., Clark, A. F., Moulder, J. C, (1965) TN321.

Gnieivek, J. J., Corruccini, R. J., (1960) Mono.21; (1961) Mono.29; 3455. Gnieivek, J. J., Ploge, E., J 69C3-203, 225 (1965).

Gnieivek, J. J., Powell, R. L., 4974. Goddard, W. F., Jr., Achenbach, P. R., Phillips, C. W.,

3570. Goddard, W. F., Jr., Phillips, C. W., Achenbach, P. R., 3394. Goddard, W. F., Jr., Phillips, C. W., Achenbach, P. R., Johnson, H. D., Penney, R. W., 3395. Godeau, C, (1961) TN91 (PB161592).

Goe, G. B., Calvert, W., 5569. Goe, G. B., Calvert, W., VanZandt, T. E., Knecht, R. W., 4640. Goe, G. B., VanZandt, T. E., Calvert, W., Knecht, R. W.,

5342. Goerke, V. H., Remmler, 0. D., (1964) TN230.

Goerke, V. H., Young, J. M., Cook, R. K., 6803. Goertz, A. E., 6736. Gold, L. P. hide, D. R., Jr., Cahill, P., 6212. Gold, R. R., J 69D9-556, 1227 (1965). Goldan, P. D., Ferguson, E. E., Fehsenfeld, F. C,

Schmeltekopf, A. L., 8947. Goldan, P. D., Ferguson, E. E., Fehsenfeld, F. C,

Schmeltekopf, A. L., Schiff, H. I., 6824. Goldberg, H., Herzfeld, C. M., (1960) TN67 (PB161-

568) ; 4206. Goldberg, K., J 70B2-177, 155 (1966) ; J 70B2-178, 157

(1966) ; J 70B2-179, 159 (1966) ; 3556; 3837; 3849; Goldberg, K., Dade, E. C, 3332. Goldberg, K., Haynsworth, E. V., (1964) AMS55, p. 803. Goldberg, K., Newman, M., Haynsworth, E., (1964) AMS55, p. 821. Golden, S., Broida, H. P., 3723. Goldhirsh, J., Lombardini, P. R., Doviak, R., J 69D7-533,

989 (1965).

Goldich, S. S., Shields, W. R., Garner, E. L., Hedge,

C. E., 5718. Goldich, S. S., Shields, W. R., Garner, E. L., Murphy,

Goldman', A. J., J 65B4-61, 237 (1961); J 67B1-90, 23

(1963) ; J 68B1-112, 27 (1964); J 68B2-117, 59 (1964) ; J 68B3-122, 99 (1964); J 69B3-152, 185

(1965) ; J 70B2-176, 153 (1966) ; J 69B1&2-140, 99 (1965) ; 3121; 4436. Goldman, A. J., Bender, B. K., J 66B3-75, 77 (1962) ; J 67B2-94, 77 (1963). Goldman, A. J., Diaz, J. B., Metcalf, F. T., J 68B4-127,

147 (1964). Goldman, A. J., Edmonds, J., Witzgall, C, Zahn, C. T.,

Jr., 6246. Goldman, A. J., Fell, H., 8982. Goldman, A. J., Klcinman, D., 6058. Goldman, A. J., Stone, J. J., 3378. Goldman, A. J., Zelen, M., J 68B4-128, 151 (1964). Goldsmith, Z., Fano, U., Prats, F., 5415. Goldstein, R. M., J 69D12-610, 1623 (1965) ; J 69D12-

611, 1625 (1965).

Golomb, D., Rosenberg, N. W., Wright, J. W., Barnes,

R. A., 6078. Golomb, D., Wright, J. W., Rosenberg, N. W., Barnes,

J. A., 6079. Golomb, S. W., J 68D9-402, 1021 (1964). Gooch, D. W., Harrison, C. W., Jr., King, R. W. P., Wu,

T. T., J 67D3-269, 355 (1963). Goodwin, R. D., J 65C4-76, 231 (1961); 3425; 3979;

4760. Goodwin, R. D., Diller, D. E., Hall, W. J., Roder, H. M., Weber, L. A., Younglove, B. A., 6414. Goodwin, R. D., Diller, D. E., Roder, H. M., Weber,

L. A., J 67A2-204, 173 (1963); J 68A1-260, 121

(1964) ; 4347. Goodwin, R. D., Roder, H. M., (1961) TN130 (PB161-

631) ; 5590. Goodwin, R. D., Roder, H. M., Diller, D. E., Weber,

L. A., 5779. Goodxvin, R. D., Roder, H. M., Weber, L. A., (1965) Mono.94; 5742. Goodivin, R. D., Weber, L. A., (1963) TN183.

Goodwin, R. D., Weber, L. A., Diller, D. E., Roder, H. M., 5067. Gordon, R., Jr., Ausloos, P., J 69A2-330, 79 (1965) ; 4405; 4762; 6007. Gorden, R., Jr., Ausloos, P., Lias S. G., 5307; 6005;

6009. Gorden, R., Jr., Carmichael, H. H., Ausloos, P., 6713. Gorden, R., Jr., Clarke, J. T., 3885. Gordon, C, Reimann, C. W., 9021. Gordon, C. L., 287A; 4762. Gordon, C. L., Johannesen, R. B., J 67A3-215, 269

(1963). Gordon, G., Kokoszka, G. F., Allen, H. C, Jr., 6732;

6733. Gordon, H. S., Brechna, H., 6667. Gordon, J. P., J 68D9-404, 1031 (1964). Gordon, M. A., Warivick, J. W., J 69D12-586, 1537

(1965) . Gornick, F., 6804. Gornick, F., Coleman, B. D., Weiss, G., 5698. Gornick, F., Jackson, J. L., 5796. Gornick, F., Mandlekern, L., 4616. Gornick, F., Mandelkern, L., Diorio, A. F., Roberts, A. E„ 6054. Gornick, F., Mclntyre, D., 6177. Gosman, A. L., Hall, L. A., Hust, J. G., (1964) TN217. Gosman, A. L., Hust, J. G., 6093. Gossard, E. E., Paulson, M. R., J 68D3-341, 265 (1964). Gossard, E. E., Theisen, J. F., J 65D2-112, 149 (1961).

Gott, T,, Maki, A. G., 5123. Gould, J. H., Brode, W. R., Wyman, G. M., 857A.

Gould, J. H., Comcford, J., 3581. Gould, J. H., Inscoe, M. N., Brode, W. R., 3346. Gould, R. N., Burman, R., J 69D5-504, 693 (1965). Gower, J. F. R., Barber, D., J 69D12-592, 1563 (1965). Grabner, L., 8926. Grady, V. E., Wright, J. R., 9100. Graham, R. P., Jones, W. B., Leftin, M., (1965) TN337.

Graminski, E. L., 6463. Grandy, W. T., Molding, F., 8966. Grant, F. A., 3345. Grant, F. A., Senftle, F. E., Pankey, T., 3621. Grant, W. B., Thompson, M. C, Jr., 6888. Grant, W. H., Passaglia, E., Stromberg, R. R., J 68A4-

287, 391 (1964). Grant, W. H., Stromberg, R. R., J 67A6-246, 601 (1963). Gray, J. E., Bussey, H. E., 4747. Gray, J. E., Bussey, H. E., Bamberger, E. C, Rushton,

E., Russell, G., Petley, B. W., Morris, D., 6149. Gray, V. E., Wright, J. R., 5129; 5239; 6199. Green, J. L., Bowles, K. L., Ochs, G. R., J 66D4-203, 395

(1962). Green, J. W., Poland, D. E., Margrave, J. L., (1961) Mono.30.

Green, M. S., 3889; 3475; 3694; 4295; 5709; 6413; 6666. Green, M. S., Hilsenrath, J., Beckett, C. W., 2394A. 428
Green, M. S., Mclntyre, D., Wims, A., 4556. Green, M. S., Kearsley, E. A., 3832. Green, M. S., Piccirelli, R. A., 5736. Green, R. G., Ferguson, E. E., (1964) TN222.

Greenberg, S. A., Bruanauer, S., (1962) Paper III-l, Mono.43. Vol. I, p. 135. Greene, F. M., Larson, E. N., 4656. Greene, G. E., Chrzanowski, P., Lemmon, K. T., Young,

J. M., 4394. Greene, G. E., Chrzanowski, P., Young, J. M., Lemmon,

K. T., 4701. Greene, G. E., Mordfin, L., Halsey, N., 3238. Greene, K. T., (1962) Paper IV-1, Mono.43, Vol. I, p. Green feld, S. H., J 64C4-48, 287 (1960) ; J 64C4-49, 299

(I960) ; 6006; 6410. Greenfeld, S. H., Newman, S. B., 5599. Greenfcld, S. H., Wright, J. R., 4664. Greenough, M. L., 3265A.

Greenspan, L., J 67C1-119, 47 (1963) ; 6555. Greenspan, M., 1486A; 5178; 5829. Greenspan, M., Tschiegg, C. E., 1771A ; 4440; 4503;

5931. Greeson, R. L., Reed, R. P., Mikesell, R. P., 3775. Greim, H. R., Wiese, W. L„ Berg, H. F., 3631; 4170. Greiner, W., Danos, M., 5979; 5980; 6456; 6675; 9005. Greiner, W., Danos, M., Kohr, C. B., 6258; 6710; 9072. Greub, W., Kantorovich, L. V., Rheinboldt, W., 3269.

Griffin, J. E., Hermach, F. L., 4422.

Griffin, J. E., Hermach, F. L., Williams, E. S., 6568;

6569.

Griffing, V., Ruffa, A. R., 4870.

Griffing, V., Scheel, N. 4703. Grisamore, N. T., (1963) M248, p. 199. Gross, D., J 66C2-90, 99 (1962) ; 3542. Gross, D., Amster, A. B., 5077. Gross, D., Lee, T. G., Loftus, J. L., 6714; 9076. Gross, D., Loftus, J. J., J 67C3-136, 251 (1963) ; 4333. Gross, D., Loftus, J. J., Robertson, A. F., 4237. Gross, D., Shoub, H., (1966) BSS3.

Gross, S. H., Felsen, L. B., J 69D3-469, 333 (1965). Grosskopf, J., Bean, B. R., Fehlhaber, L., J 66D5-219,

593 (1962) ; 4876A. Grudemo, A., (1962) Paper V-2, Mono.43, Vol. II, p. 615. Gruzensky, P. A., J 68A3-278, 313 (1964). Grzybowski, A. K., Datta, S. P., Bates, R. G., 6359. Guggenheim, E. A., Bates, R. G., 3751. Guildner, L. A., J 66A4-168, 333 (1962); J 66A4-169,

341 (1962); 4096A; 4097; 4429. Guildner, L. A., Anderson, R. L., 6879. Guildner, L. A., Edsinger. R. E., J 69C1-180, 13 (1965). Guildner, L. A., Stimson, H. F., 5839. Guiraud, F. 0., Barhausen, A. F., McGavin, R. E., Murahata, S., Wilber, R. W., (1963) TN103.

Gulkis, S., Carr, T. D., Smith, A. G., May, J., Lebo,

G. R., Kennedy, D. J., Bollhagen, H., J 69D12-584,

1530 (1965). Guntner, C. J., Reed, R. P., 4173; 4740; 4992; 6406. Gupta, D., Deming, L. S., J 65B1-46, 61 (1961). Gurney, P., Jr., Hutchiyison, F., Young, R. D., 6651. Guthart, H., J 69D11-573, 1403 (1965) ; J 69D11-574, 1417 (1965).

Gutt, W., Welch, J. H., (1962) Paper II-S1, Mono.43,

Vol. I, p. 59. Gygax, S., Kropschot, R. H., 6412; 6425. Gygax, S., Olsen, J. L., Kropschot, R. H., 6080. H

Haar, L., Friedman, A. S., Beckett, C. W., (1961) Mono.20. Haas, G., Madden, R. P., Canfield, L. R., 5542. Haave, C. R., Zmuda, A. J., Shaw, B. W., J 68D1-325,

117 (1964). Haber, S., J 66B2-73, 57 (1962); J 70B2-172, 127

(1966) ; 5881. Hackler, W. C, (1965) M267, p. 109.

Hacskaylo, M., Smith, R. C., (1964) M256, p. 83. Hadley, S. G., Keller, R. A., 6753. Haegele, C. B., (1964) TN253, p. 7. Hag tors, T., J 66D4-204, 409 (1962).

Hat/tors, T., Moriello, J., J 69D12-607, 1614 (1965). Hague, J. L., Isbell, H. S., Tipson, R. S., Scribner, B. F., Smith, W. H., Wade, C. W. R., Cohen, A., (1962) Mono.54. Hague, J. L., Machlan, L. A., J 65A1-87, 75 (1961);

J 66A6-187, 517 (1962). Hague, J. L., Mears, T. W., Michaelis, R. E., (1965) M260-4. Hahn, W. R., Jr., Skramstad, H. K., Urban, W. D., 3473. Hahn, W. R., Jr., Urban, W. D., Skramstad, H. K., Hahner, C. H., 3221. Hahner, C. H., Cleek, G. W., Villa, J. J., 3293. Haight, F. A., J 65B1-45, 23 (1961). Hakkarinen, W., 6492. Hakura, Y., Lincoln, J. V., 5168. Halbach, E. W., Stair, R., Johnston, R. G., J 64A4-51, 291 (1960).

Hall, J. L., Jennings, D. A., McClintock, R. M., 5165.

Hall, J. L., Robinson, E. J., Branscomb, L. M., 6825. Hall, L. A., Hust, J. G., Gosman, A. L, (1964) TN217.

Hall, L. A., Hust, J. G., Wallace, L. D., Grim, J. A., Stewart, R. B., (1962) TN137 (PB161638).

Hall, L. A., Olien, N. A., (1965) TN309.

Hall, L. H., 6462. Hall, L. H., Block, S., Perloff, A., 9064. Hall, L. H., Perloff, A., Mauer, F. A., Block, S. 6669. Hall, M., Jr., Newman, M., 5262. Hall, S. C, Lawrence, R. S., Posakony, D. J., Garriott, 0. K., 5806. Hall, W. J., Goodwin, R. D., Hall, W. J., Roder, H. M., Weber, L. A., Younglove, B. A., 6414. Hall, W. J., Powell, R. L., Roder, H. M., 3245; 3615. Hallenbeck, M., Lawrence, R. S., (1965) TN315.

Haller, F. B., 5906. Holler, W., 3600; 4087; 5256; 6634; 8983. Haller, W., Blackburn, D. H., 6759. Haller, W., Duecker, H. C, J 64A6-76, 527 (1960) ; 4577. Haller, W., Yamamoto, N., Hiatt, C. W'., 6203. Halow, I., Wagman, D. D., Evans, W. H., Dudley, R. M.,

5728. Halow, I., Wagman, D. D., Evans, W. H., Parker, V. B., Bailey, S. M., Schumm, R. H., (1965) TN270-1;

(1966) TN270-2.

Halpern, C, J 65A6-134, 513 (1961) ; J 67A1-196, 71 (1963) ; J 70A2-388, 133 (1966) ; (1963) Mono.27,

Suppl. 1. Halpern, C, Moffat, R. J., (1961) Mono.27.

Halpin, J. C, Mnndelkern, L., 6376. Halpin, J. C, Mandlekern, L., Diorio, A. F., Posner, A. S., 4588; 4759. Halpin, J. C, Mandelkern, L., Roberts, D. E., Price, F P 3553

Halsey, N., Mordfin, L., 3540; 5598. Halsey, N., Mordfin, L., Greene, G. E., 3238. Halstcad, P. E., Lawrence, C. D., (1962) Paper III-S11, Mono.43, Vol. I, p. 321. Hama, F. R., Arms, R. J., 6832. Hamer, W. J., (1965) Mono.84; 3348A; 3419; 3454;

3518; 3521; 3559; 3572; 3623; 3755; 3765; 5793;

6310; 6397; 6842; 9111. Hamer, W. J., Craig, D. N., 6491. Hamer, W. J., Craig, D. N., Hoffman, J. I., Law, C. A., J 64A5-63, 381 (1960). Hamer, W. J., Malmberg, M. S., Rubin, B., 9110. Hamilton, E. H., 5945. Hamm, J. M., Tyras, G., Bargeliotes, P. C, Schell, R. R., J 69D6-516, 839 (1965). Hammersley, J. M., 630A. Hammond, H. K., Ill, 3159; 5681; 6104. Hammond, J. L., Jr., (1965) M 267, Paper 4, p. 81. Hammond, W., (1965) M269, p. 237. 429
Hampson, R. F., Jr., Diamond, J. J., Efimenko, J., Walker, R. F., 3741A. Hampson, R. F., Jr., McNesby, J. R., 9128; 9129. Hampson, R. F., Jr., McNesby, J. R., Akimoto, H., Tanaka, I., 6204. Hampson, R. F., Jr., Walker, R. F., J 65A4-113, 289

(1961) ; J 66A2-149, 177 (1962). Hampton, D. E., J 68D1-311, 19 (1964). Hanley, H. J. M., (1966) TN333.

Hanselman, J. C., Casselman, C. J., Tibbals, M. L., Bickel, J. E., J 68D1-308, 11 (1964). Hansen, D. W., Gates, D. M., Calfee, R. F., 5254; 5255. Hansen, D. W., Gates, D. M., Calfee, R. F., Benedict, W. S., (1964) Mono.71. Hansen, J., Larsen, T., J 66D2-188, 205 (1962). Hansen, R. C., J 68D4-359, 441 (1964). Hansen, R. C, Bickmore, R. W., J 64D6, 731 (1960). Hansen, R. T., Warivick, C. S., 3218. Hansen, S. F., 5139. Hansen, T. C., (1962) Paper V-S2, Mono.43, Vol. II, p. 709. Hansen, W. C., (1962) Paper IV-2, Mono.43, Vol. I, p. Hansen', W. C., Miller, W. A. C., Jr., Dickson, G., Sweeney, W. T., 3713; 3730. Harari, H., Horn, D., Kugler, M., Lipkin, H. J., Meshkov, S., 6861. Harari, H., Lipkin, H. J., Meshkov, S., 6767. Hardebeck, H. E., J 69D12-594, 1573 (1965). Harden, J. L., Arp, V., 5771. Harden, J. L., Collier, R. S., 5098. Harden, J. L., Powell, R. L., Gibson, E. F., 3617. Harding, G. N., Gallet, R. M., Richardson, J. M., Wider,

B., Ward, G. D., 3649. Harding, W. B., Koch, J. W., Jansen, R. J., 3552. Harding, W. B., Woodward, M. W., Carroll, J. C,

(1966) TN331.

Hardy, R. C, (1962) Mono.55. Hardy, R. J., Jacobs, R. B., Martin, K. B., 3186A. Hardy, S. C, Parker, R. L., 5113; 6526. Hardy, S. C, Parker, R. L., Anderson, R. L., 5378. Hargreaves, J. K., 5193. Hargreaves, J. K., Olivers, H. J. A., 6075; 6162; 6565;

6655. Hargreaves, J. K., Chivers, H. J. A., Petlock, J. D., Hargreaves, J. K., Ecklund, W. L., Pope, J. H., 8919. Hargreaves, J. K., Eriksen, K. W., Gillmor, C. S., Jr., 6375. Hargreaves, J. K., Gillmor, C. S., Jr., 5778. Hargreaves, J. K., Hargreaves, S., J 67D6-298, 685

(1963). Hargreaves, J. K., Lerfald, G. M., Watts, J. M., J 69D7-

527, 939 (1965). Hargreaves, K. L., Sharp, R. D., 6733A. Hargreaves, S., Hargreaves, J. K., J 67D6-298, 685

(1963).

Harllee, F. N., Dibeler, V. H., Krauss, M., Reese, R. M.,

6843. Harllee, F. N., Reese, R. M., 6196. Harllee, F. N., Rosenstock, H. M., Dibeler, V. H., 6137. Harllee, F. N., Rosenstock, H. M., Herron, J. T., (1966) TN291. Harman, A. W., Douglas, T. B., J 69A2-336, 149 (1965). Harman, G. G., (1962) TN140 (PB161641) ; 2610A;

3252; 3563; 4296. Harman, G. G., Higier, T., 4926; 5741. Harman, G. G., Higier, T., Meyer, 0. L., 4917. Harman, G. G., Raybold, R. L., 4169. Harman, G. G., Raybold, R. L., Meyer, 0. L., 5296. Harmony, M. D., Myers, R. J., Schoen, L. J., hide, D. R., Jr., Mann, D. E., 4124. Harper, J. D., Jr., Johler, J. R., J 66D1-176, 81 (1962) ; (1963) TN164; 5532. Harper, J. D., Jr., Johler, J. R., Walters, L. C, (1960) TN69 (PB161570).

Harper, J. D., Jr., Lucas, D. L., (1965) TN318.

Harrington, J. M., Bailey, D. K., 4456. Harrington, R. D., Case, W. E., Schmidt, L. B., J 68C2-

154, 85 (1965); J 68C4-172, 255 (1964). Harrington, R. D., Danielson, B. L., 3407. Harrington, R. D., Hoer, C. A., J 67C3-137, 259 (1963) ; 5186. Harrington, R. D., Schmidt, L. B., Case, W. E., (1964) TN221.

Harris, F. B., Jr., Tanner, R. L., J 66D4-208, 463

(1962). Harris, F. K., 5320; 6518; 6638. Harris, F. K., Cutkosky, R. D., 4270. Harris, F. K., Sze, W. C, Kusters, N. L., Petersens, 0., Moore, W. J. M., 5913. Harris, J., Leussing, D. L., Wood, P., 4991. Harris, J. H., J 67D6-301, 717 (1963). Harris, J. H., Villeneuve, A. T., Brocas, L. A., J 69D10-

567, 1335 (1965). Harris, W. P., 6304. Harris, W. P., Scott, A. H., J 65C2-61, 101 (1961) ; 4280. Harrison, C. W., Jr., J 65D4-140, 363 (1961). Harrison, C. W., Jr., Gooch, D. W., King, R. W. P., Wu,

T. T., J 67D3-269, 355 (1963). Harrison, C. W., Jr., King, R., J 64D4-70, 365 (1960). Harrison, C. W., Jr., King, R. W. P., Denton, D. H., J 65D4-141, 371 (1961). Harrison, W. N., 4113; 4689; 5566. Harrison, W. N., Moore, D. G., Pitts, J. W., 951A.

Harrison, W. N., Richmond, J. C, J 66C3-102, 261

(1962) ; 3205A; 3533. Harrison, W. N., Richmond, J. C, Kirkpatrick, H. B., Harrison', W. N., Richmond, J. C, Plyler, E. K., Stair,

R., Skramstad, H. K., 4308. Harrison, W. N., Richynond, J. C, Shorten, F. J., 5192. Harrison, W. N., Richmond, J. C., Skramstad, H. K., 4935. Harrop, W. J., Gates, D. M., 5410. Harshman, E. N., Rosholt, J. N., Shields, W. R., Garner,

E. L., 6166. Hartley, J. L., Hudson, D. C, Sweeney, W. T., Dickson,

G., 2197A. Hartman, B., Decker, M. T., 4186. Hartman, W. J., 4377; 5555. Hartman, W. J., Decker, M. T., J 65D5-148, 433 (1961) ; (1963) TN126. Hartman, W. J., Lutz, S. G., (1963) TN180; 4493. Hartmann, R. F., Furutsu, K., Wilkerson, R. E., J 68D7-

380, 827 (1964). Hartz, T. R., Little, C. G., Ortner, J., Brown, R. R., Holt, O., Hultqvist, B., Leinbach, H., 4955. Hasko, S., Parker, H. S., 4962. Harvey, J. L., Forshee, B. W., Fletcher, D. G., 3177.' Harvey, K. B., Bond, H. E., 5744. Harvey, K. B., Brown, H. W'., 3203 A. Hascqawa, S., Hyland, R. W.. Rhodes, S. W'., 6542. Hashman, J. S., Rnehrwcin, R. A., Edwards, J. W., 3463. Hasko, S., 9138. Hasko, S., Wollin, H. F., 6313. Hasserjian, G., Ishimam, A., J 66D3-201, 335 (1962). Hatch, M. R., Jacobs, R. B., 4855. Hattenburg, A. T., Kostkowski, H. J., 4648. Hattenburg, A. T., Snyder, C. F., (1963) Mono.64. Haupt, G. W., Judd, D. B., Chamberlin, G. J., 3 66C2-93,

121 (1962) ; 5007. Haurwitz, M. W., 4567; 6368. Hanrwitz, M. W., London, J., 5552. Haurwitz, M. W., Warwick, C. S., 4448. Haurwitz, M. W., Warivick, C. S., Hoff, C. E., 4714. Haus, H. A., J 68D5-365, 669 (1964). Havens, W. W., Jr., Koch, H. W., Donnert, H. J., Rogosa, G. L., Rosen, L., (1966) TN283.

Hawkins, E. G., Napolitano, A., J 68A5-291, 439 (1964). Hawkins, E. G., Napolitano, A., Macedo, P. B., J 69A5-

366, 449 (1965) ; 9132. Hay, D. R., Naito, K., J 69D6-520, 877 (1965). 430
Haydm, E. C, J 65D3-127, 253 (1961) ; J 65D3-120, 197

(1961). Hayes, E. E., Tschicgg, C. E., 3357.

Hai/cs, J. L., (1963) M248. p. 203. Hancs, J. W., Wildhack, W. A., Perls, T. A., Kissinger,

C. W., 6657. Hayes, R. M., (1965) M269, p. 161. Hayes, W. D., Jr., Moore, D. G., Eiibanks, A. G., Thornton, H. R., Crigler, A. W., 4324. Hayes, W. D., Jr., Richmond, J. C., DeWitt, D. P., (1964) TN252.

Hai/cs. W. D., Jr.. Richmond, J. C, Dunn, S. T., DeWitt,

D. P., (1966) TN267.

Hayes, IF. D., Jr., Tighc, N. J., Kirkpatrick, H. B., 4857. Hayfield, P. C. S., White, G. W. T., (1964) M256, p. 157. Haynsworth, E. V., J 64B3-33, 171 (1960); J 65B1-41,

7 (1961) ; 3449. Haynsworth, E. V., Davis, P. J., Marcus, M., J 65B1-

42, 13 (1961). Haynsworth, E. V., Drazin, M. P., 4555. Haynsworth, E. V., Goldberg, K., (1964) AMS55, p. 803. Haynsworth, E. V., Goldberg, K., Newman, M., (1964) AMS55, p. 821. Hayre, H. S., J 67D6-305, 763 (1963). Hayrc, H. S., Moore, R. K., J 65D5-147, 427 (1961). Hayward, E., 4796; 5561; 8941. Hayward, E., J 65A5-119, 401 (1961); 3415; 3756; 3834; 5001; 5028; 5031. Hayward, H. W., Sneed, H. M. S., Turnipseed, J. H., Tauber, S. J.. 9018. Hayward, H. W., Tauber, S. J., Fraction, G. F., 6633. Hayward, R. W., 4201. Hayward, R. W., Hoppes, D. D., 4275. Hayward, R. W., Hoppes, D. D., Ambler, E., Kaeser,

R. S., 4164. Heading, J., J 65D6-16.3, 595 (1961); J 67D1-244, 65 (1963). Hebert, R. L., 3406. Hebert, R. L., McDonell, A. E., 4793. Heddle, D. W. O., Chamberlain, G. E., Smith, S. J., 6447. Hedetniemi, S., Levin, B., 5288. Hedge, C. E., Shields, W. R., Garner, E. L., Goldich, S S 5718

Heffn'er, H., Tien, P. K., J 64D6, 751 (1960).

Hefley, G., Doherty, R. H., Berger, E. L., 3133. Hefley, G., Doherty, R. H., Linfield, R. F., J 65D2-114,

157 (1961) ; 4391. Hefley, G., Linfield, R. F., Davis, T. L., J 65C1-53, 43

(1961).

Hefley, G., Linfield, R. F., Doherty, R. H., 5089A. Heideman, H. G. M., Chamberlain, G. E., 6793. Heilmann, T., (1962) Paper II-S4, Mono.43, Vol. I p. 87. Hcilprin, L. B., Stevens, M. E., Giuliano, V. E., Editors, (1965) M269. Heim, D. S., Lindsay, W. J., J 65D3-125, 237 (1961). Heim, L. E., Barnes, J. A., 3930. Heim, W. R., Beehler, R. E., Atkinson, W. R., Snider,

C. S., 4416. Heinrich, K. F. J., (1966) TN284.

Hcinrich, K. F. J., Yakowitz, H., Vieth, D. L., Michaelis, R. E., (1965) M260-10.

Heislcr, L. H., J 69D2-456, 219 (1965).

Heisler, L. H., Wilson, L. D., J 65D6-165, 629 (1961). Held, G., Saran, G. S., J 64D5-78, 435 (1960).

Helliwell, R. A., Morgan, M. G., J 64D6, 642 (1960). Heilmann, M., Wall, L. A., 4633. Helmuth, R. A., (1962) Paper VI-S2, Mono.43, Vol. II, p. 855. Hemenger, R., Weston, V. H., J 66D5-222, 613 (1962). Henderson, M. M., Moats, J. S., Stevens, M. E., Newman, S. M., (1966) M276.

Henig, S., 3288B; 3306. Henig, S., Palasky, E. C, J 66C3-103, 271 (1962). Henins, I., J 68A5-299, 529 (1964).

Henrici, P., 2228A.

Henry, W. H., Aitken, J. H., DcLaVergne, R., Loftus,

T. P., 4538. Herbert, R. L., McDonell, A. E., 4793. Herbold, R. J., Hilscnrath, J., Ziegler, G. G., Messina,

C. G., Walsh, P. J., (1966) H101.

Herbold, R. J., Hubbell, J. H., Bach, R. L., J 65C4-78, 249 (1961).

Herbstrict, J. W., (1960) TN66 (PB161567) ; 3569; 3852A; 6315; 6795; 6798; 8974. Hcrbstreit, J. W., Crichlow, W. Q., J 68D8-388, 903

(1964). Herbstreit, J. W., Little, C. G., Patterson, D. W., 5781. Hcrbstreit, J. W., Norton, K. A., Janes, H. B., Hornberg,

K. O., Peterson, C. F., BarghauseJi, A. F., Johnson, W. E., Wells, P. I., Thompson, M. C, Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33.

Hcrbstreit, J. W., Rice, P. L., 6514. Hermach, F. L., (1963) M248, p. 31; 3968; 4543; 6587. Hermach, F. L., Griffin, J. E., 4422. Hermach, F. L., Griffin, J. E., Williams, E. S., 6568;

6569. Hermach, F. L., Williams, E. S., 3886. Herman, J. R., J 65D6-160, 565 (1961). Herman, J. R., Hill, G. E., J 67D2-253, 179 (1963). Herman, R., Rubin, R. J., 3262; 3499. Hernandez, H. P., Birmingham, B. W., 6180. Hernandez, H. P., Birmingham, B. W'., Chelton, D. B., Mann, D. B., 3170. Hernandez, W. C, Jr., Kahn, A. H., J 67A4-218, 293

(1963) . Herrick, R. B., Meyer-Arendt, J. R., Emmanuel, C. B., 5285. Herrin, D. W., Burley, G., 4614. Herring, R. N., Hiza, M. J., 5190; 9011. Herring. R. N., Robbins, R. F., Weitzel, D. H., 4980. Herron, J. T., J 65A5-121, 411 (1961) ; J 69A3-348,

287 (1965); 3741; 4260; 5640; 6855. Herron, J. T., Dibeler, V. H., J 65A5-120, 505 (1961) ; 3523; 3593; 3624; 4163. Herron, J. T., Harllee, F. N., Rosenstock, H. M., (1966) TN291.

Herron, J. T., Klein, F. S., 6192; 6195. Herron, J. T., Rosenstock, H. M., Shields, W. R., 6882. Hersey, M. D., J 69B3-144, 139 (1965). Hertelendy, P., 4599. Hertelendy, P., Reynard, P., 6507. Herzfeld, C. M., 5062. Herzfcld, C. M., Berger, R. T., 5536. Herzfeld, C. M., Goldberg, H., (1960) TN67 (PB161-

568) ; 4206. Herzfeld, C. M., Meijer, P. H. E., 4101. Herzfeld, C. M., Reed, S. G., 3883. Hetzer, H. B., Bates, R. G., J 64A5-66, 427 (1960) ; 3959; 4042; 4601. Hetzer, H. B., Bates, R. G., Robinson, R. A., 5299. Hetzer, H. B., Davis, M. M., J 65A3-103, 209 (1961). Hetzer, H. B., Robinson, R. A., Bates, R. G., 4600;

4936; 6504. Hetzer, H. B., Rosenthal, D., Bates, R. G., 6356. Hewitt, C. A., Ross, G. S., Enagonio, D., Glasgow, A. R., J 66A1-140, 59 (1962). Hewitt, L. W., Belrose, J. S., Bode, L. R., J 68D12-436,

1319 (1964). Hexner, P. E., Mclntyre, D., Williams, L. C, Kim,

H. G., Weber, F. N., Bunting, R. F., Kupke, D. W.,

4534. Hiatt, C. W., Yamamoto, N., Holier, W., 6203. Hibberd, F. H., J 69D1-440, 25 (1965). Hicho, G. E., Waterstrat, R. M., J 68A3-279, 317

(1964) . Higgins, C. S., Slee, O. B., J 69D12-585 (1965)

.

Higgins, T. F., Fires, E., Morowitz, H. J., 898A.

Higier, T., Harman, G. G., 4926; 5741. Higier, T., Harman, G. G., Meyer, 0. L., 4917. Hildner, E., 8984.

Hill, G. E., J 67D1-239, 23 (1963).

Hill, G. E., Herman, J. R., J 67D2-253, 179 (1963). 431
Hill, R. L., (1963) TN168.

Hill, R. L., Cunningham, J. A., (1960) TN68 (PB161-

569). Hillenbrand, E. F., Jr., Riddick, J. A., Fritz, J. S., Davis, M. M., Markunas, P. C, 604A.

Hilsenrath, J., 5817. Hilsenrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Hoge, H. J., Masi, J. R., Nuttall, R. L., Toulonkian,

Y. S., Woolley, H. W., 3806. Hilsenrath, J., Cameron, J. M., 9126. Hilsenrath, J., Galler, G. M., (1962) TN125 (PB161-

626). Hilsenrath, J., Green, M. S., Beckett, C. W., 2394A.

Hilsenrath, J., Klein, M., 9055. Hilsenrath, J., Ziegler, G. G., (1962) Mono.49.

Hilsenrath, J., Ziegler, G. G., Messina, C. G., Walsh,

P. J., Herbold, R. J., (1966) H101.

Hilten, J. S., Lederer, P. S., (1966) TN269.

Hilten, J. S., Smith, R. 0., Willis, E. A., J 66C4-111, 357 (1962). Hinchey, F. A., Duncan, R. H., J 64D5-95, 569 (1960). Hinchman, W. R., Buck, A. L., 6073. Hinds, M. E., Jones, W. B., (1963) TN181.

Hines, C. O., J 69D3-473, 375 (1965). Hirsch, P., 69D4-488, 521 (1965). Hirsh, A. J., Knecht, R. W., 4806. Hirshfeld, A. T., Chin, J., Hoppes, D. D., 5663. Hirshfeld, A. T., Dodge, W. R., Domen, S. R., Hoppes,

D. D., 5921; 6813. Hirshfeld, A. T., Schooley, J. F., Hoppes, D. D., J 66A4-165, 317 (1962). Hirshfeld, M. A., Plyler, E. K., Jaffe, J. H., 5591. Hite, R. T., Forziati, F. H., Wharton, K., 3573. Hiza, M. J., 3488. Hiza, M. J., Barrick, P. L., 4021. Hiza, M. J., Herring, R. N., 5190; 9011. Hiza, M. J., Kidnay, A. J., 4345; 5130; 5732. Hiza, M. J., Mann, D. B., Bjorklund, W. R., Macinko,

J., 3494. Hiza, M. J., Mullen, L. 0., 6476. Hobbs, R. B., 4359. Hobbs, R. B., O'Leary, M. J., Missimer, J. K., Erving,

J. J. 998A. Hobbs, R. H., Stiehler, R. D., Steel, N., Richey, G. G., Mandel, J., 3283. Hobbs, T. G., 4392. Hochstrasser, U. W., (1964) AMS55, p. 771. Hochstrasscr, U. W., Stoneley, R., 4381A. Hockersmith, T. E., Ku, H. H., 9125. Hockman, A., 4838. Hockman, J. F., Cornog, J. R., Craig, J. C, 5903. Hoekstra, H. R., Parker, H. S., 3987. Hoer, C, Love, C, J 69C2-192, 127 (1965). Hoer, C. A., Harrington, R. D., J 67C3-137, 259 (1963) ; 5186. Hoer, C. A., Rasmussen, A. L., J 67C1-121, 69 (1963)

.

Hoerman, K. C, Mancewicz, S. A., 5947; 6076. Hoerman, K. C, Manceivicz, S. A., Forziati, A. F., 4916. Hoeve, C. A. J., 6678. Hoeve, C. A. J., DiMarzio, E. A., Peyser, P., 6586. Hoff, C. E., Warwick, C. S., Haurwitz, M. W., 4714. Hoffman, A. A. J., Horton, C. W., J 66D4-210, 489

(1962) ; J 66D4-211, 495 (1962). Hoffman, J. D., 2371A; 3352; 6493. Hoffman, J. D., Lauritzen, J. I., Jr., J 65A4-114, 297

(1961) ; 3213A. Hoffman, J. D., Powers, J., Weeks, J. J., Quinn, F. A.,

Jr., J 69A4-353, 335 (1965). Hoffman, J. D., Scott., A. H., Scheiber, D. J., Curtis, A. J., Lauritzen, J. I., Jr., J 66A4-162, 269 (1962). Hoffman, J. D., Weeks, J. J., J 66A1-137, 13 (1962);

4878; 9146. Hoffman, J. I., 248A; 3335; 3535; 3719; 3732; 3902;

4111. Hoffman, J. I., Craig, D. N., Law, C. A., Hamer, W. J., J 64A5-63, 381 (1960). Hoffman, J. I., Walton, W. W., 3285.

Hoffman, W. C, J 66D1-178, 107 (1962); J 68D4-359,

455 (1964) ; J 68D4-359, 486 (1964). Hoge, H. J., Hilsenrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Masi, J. R., Nuttall, R. L., Touloukian, Y. S., Woolley, H. W., 3806. Hogue, E. W., (1961) TN113 (PB161614) ; 2622A;

5137; 5876. Holshouser, W. L., Bennett, J. A., 4669; 5372. Holshouser, W. L., Bennett, J. A., Utech, H. P., 5761. Holshouser, W. L., Utech, H. P., 4051. Holt, A. W., 1311A.

Holt, J. M., Iliff, W. R., J 67D1-240, 31 (1963).

Holt, N. B., Frush, H. L., Sniegoski, L. T., Isbell, H. S., J 69A6-376, 535 (1965).

Holt, N. B., Isbell, H. S., Frush, H. L., J 69A4-61, 363

(1961) ; 3956; 4473. Holt, O., Little, C. G., Ortner, J., Brown, R. R., Hartz,

T. R., Hultqvist, B., Leinbach, H., 4955. Hoover, T. B., 5966; 5967. Hoover, T. B., Hutchison, A. W., 4013. Hoover, T. B., Rose, A., Sweeney, R. F., Schrodt, V. N., 3540A. Hopper, N. J., (1962) Mono.57; (1966) M274.

Hoppes, D. D., (1961) TN93 (PB161594) ; 3913A. Hoppes, D. D., Ambler, E., Hayward, R. W., Kaeser,

R. S., 4164. Hoppes, D. D., Chin, J., Hirshfeld, A. T., 5663. Hoppes, D. D., Dodge, W. R., Domen, S. R., Hirshfeld, A. T., 5921; 6813. Hoppes, D. D., Hayward, R. W., 4275. Hoppes, I>. D.. Schooley, J. F., 5757. Hoppes, D. D., Schooley, J. F., Hirshfeld, A. T., J 66A4-

165, 317 (1962). Hord, J., J 69C4-210, 287 (1965). Hord, J., Jacobs, R. B., Robinson, C. C, Sparks, L. L., 6235. Horl, E. M., 3200; 3329; 4948. Horl, E. M., Klein, R., 3598. Horl, E. M., Marton, L., 4059. Horl, E. M., Suddeth, J. A., 3994. Horman, J. K., Sterrett, K. F., Blackburn, D. H., Bestul, A. B., Chang, S. S., J 69C1-181, 19 (1965). Horn, D., Carter, J. C, Coyne, J. J., Meshkov, S., Kugler, M., Lipkin, H. J., 9053. Horn, D., Harari, H., Kugler, M., Lipkin, H. J., Meshkov, S., 6861. Horn, D., Kugler, M., Lipkin, H. J., Carter, J. C,

Coyne, J. J., 9142. Horn, J. D., 5205. Horn, J. D., Bean, B. R., 4012; 4199. Horn, J. D., Bean, B. R., Ozanich, A. M., Jr., (1960) Mono.22. Horn, J. D., Bean, B. R., Riggs, L. P., (1962) TN98;

3747. Hornback, C. E., Brefogle, L. D., Sugar, G. R., (1960) TN86 (PB161587). Hornback, C. E., Jean, A. G., Doherty, R. H., Winkel- man, J. R., Moore, R. T., 9057. Hornbeck, G. A., 4423; 6782. Hornberg, K. 0., Norton, K. A., Herbstreit, J. W.,

Janes, H. B., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Wells, P. I., Thompson, M. C, Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33. Horowitz, E., Brauer, G. M., 4969. Horowitz, E., Mandel, J., 5282. Horowitz, E., Mandel, J., Capott, R. J., Boone, T. H., 4072. Horowitz, E., Perros, T. P., J 69A1-328, 53 (1965);

6502. Horowitz, E., Tryon, M., 4694; 5101; 5479. Horowitz, E., Tryon, M., Christensen, R. G., 9115. Horton, A. T., Deslattes, R. D., Simson, B. G., 9013. Horton, A. T., Deslattes, R. D., Torgensen, J. L., Paretzkin, B., 8955. Horton, A. T., Glasgow, A. R., J 69C3-199, 195 (1965). Horton, A. T., Torgesen, J. L., 5324. 432
Hprton, A. T.. Torgescn, J. L., Saylor, C. P., J 67C1-116,

25 (1963). Horton, C. 11'., Hoffman, A. A. J., J 66D4-210, 489

(1962) ; J 66D4-311, 495 (1962). Hoskins, M., (1963) M248, p. 169. Hosier, W. R., Becker, J. H., 5327; 6876. Hosier, W. R.. Frederikse, H. P. R., 3622. Hosier, W. R., Frederikse, H. P. R., Becker, J. H., 3524A.

Hosier, W. R., Frederikse, H. P. R., Thurber, W. R., 6035. Hosier, W. R., Hudson, R. P., 4160. Hosier, W. R., Schooley, J. F., Ambler, E., Becker,

J. H., Cohen, M. L., Koonce, C. S., 6682. Hosier, W. R., Schooley, J. F., Cohen, M. L., 6411. Houck, J. C, Hutton, U. 0., 4552; 5266. Houghton, J. R., (1965) TN266. Howard, F. L., J 67C4-145, 335 (1963)

.

Howard, F. L., Mears, T. W., David, R. M., 3879. Howard, F. L., Mears, T. W., Stanley, C. L., Compere,

E. L., J 67A5-236, 475 (1963). Howard, F. L., Tenenbaum, M., J 66A3-160, 255 (1962). Howard, R., Shepherd, M., Rock, S. M., Stormes, J., 251B. Howard, R. E., 8979. Howard, R. E., Bosivarva, I. M., Lidiard, A. B., 4651. Howard, R. E., deWit, R., 8988. Howard, R. E., Lidiard, A. B., 6197; 9041; 9059; 9109. Howard, R. E., Manning, J. R., 5703. Howard, R. E., Sinnnons, J. A., Parker, R. L., 6497. Howe.H.H., (1960) TN76 (PB161577). Howe, W. B., Brauer, G. M., Morris, R. W., J 67A3-213,

253 (1963). Hsu, R. W., Rankin, B. K., Ill, Sillars, W. A., (1965) TN254.

Hu, M. K., J 65D2-111, 137 (1961). Hubbard, B. E., Bramble, J. H., J 65B4-65, 261 (1961). Hubbard, D., Hunt, C. M., Tomes, L. A., Pike, R. G., 4591; 4594. Hubbard, D., Lucas, G. L., 3590. Hubbard, D., Pike, R. G., Newman, E. S., 3448. Hubbard, E. K., Blaine, R. L., Bean, L., (1965) BSS2,

Part 1, Section 3. Hubbard, R. W., Cateora, J. V., (1961) TN107 (PB161-

608) ; 4830. Hubbard, W. D., Wasik, S. P., J 68A4-234, 359 (1964). Hubbe, P. D., Thaxter, R. T., Mandel, J., 5243. Hubbell, J. H., J 67C4-140, 291 (1963); J 69C2-193,

139 (1965) ; 3310; 5304. Hubbell, J. H., Bach, R. L., Herbold, R. J., J 65C4-78, 249 (1961). Hubbell, J. H., Epstein, L. F., J 67B1-88, 1 (1963). Hubbell, J. H., Spencer, L. V., (1964) Mono.69. Hubner, W., Wyckoff, H. 0., Allisy, A., Aston, G. H., Barnerd, G. P., Loftus, T., Taupin, G., 5416. Hucke, E., (1965) M267, Paper 3, p. 39. Hudson, D. C, Hartley, J. L., Sweeney, W. T., Dickson,

G., 2197A. Hudson, G. E., 6091; 6382; 8906. Hudson, G. E., Atkinson, W., 5539; 5790. Hudson, P. A., 3391. Hudson, P. A., Ecklund, W. L., Ondrejka, A. R., 4754. Hudson, P. A., Morgan, A. H., (1960) TN77 (PB161-

578). Hudson, P. A., Ondrejka, A. R., J 70C1-216, 13 (1966). Hudson, R. P., 4020; 4154; 4213; 5060; 5083; 5853. Hudson, R. P., DeKlerk, D., 641A. Hudson, R. P., Einsenstein, J. C, Mangum, B. W.,

5877; 6185; 6838. Hudson, R. P., Hosier, W. R., 4160. Hudson, R. P., Kaeser, R. S., 4305. Hudson, R. P., Kaeser, R. S., Radford, H. E., 3613. Hudson, R. P., Mangum, B. W., 4932; 5208. Huff, R. L., Barone, J. ./., Dickson, G., 4334. Hufnagel, C. A., Freis, E. D., Broida, H. P., Rose, J. C,

1329A. Hughes, C. J., J 69D1-442. 59 (1965).

Hughes, E. E., 4250. Hughes, E. E., Lias, S. G., (1960) TN70 (PB161571) ; 3496. Hughes, E. E., Mann, W. B., 6450. Hughes, E. E., Mann, W. B., Marlow, W. F., 4103;

4355. Hughes, J. C, Keysar, B. C, (1963) Mono.62. Hughes, V. W., Radford, H. E., 3261. Hultqvist, B., Little, C. G., Ortner, J., Brown, R. R., Hartz, T. R., Holt, O., Leinbach, H., 4955. Hummer, D. G., Stebbings, R. R., Fite, W. L., Branscomb, L. M., 3461. Humphreys, J. C, Petree, B., 5764; 9082. Humphries, D. C, Rippy, D. E., 6840. Hunsucker, R. D., J 68D6-369, 717 (1964) ; J 69D2-463,

267 (1965) ; 8913. Hunsucker, R. D., Owren, L., J 66D5-218, 581 (1962) ; J 67D4-273, 385 (1963). Hunt, C. M., (1962) Paper III-S8, Mono.43, Vol. I, p. 297. Hunt, C. M., Tomes, L. A., J 66A6-182, 473 (1962). Hunt, C. M., Tomes, L. A., Pike, R. G., Hubbard, D., 4591; 4594. Hunt, C. M., Woolf, A. R., 6366. Hunt, D. C, (1962) TN162.

Hunt, D. C, VanZandt, T. E., 4224. Hunten, D. M., Chamberlain, J. W., Rundle, H. N., Hunter, B. J., Kropschot, R. J., Schrodt, J. E., Fulk, M. M., 3637; 3656. Huntley, L. E., J 69C2-191, 115 (1965)

.

Huntoon, R. D., 4850; 4939; 8930. Huntoon, R. D., Wildhack, W. A., 8943; 9081. Hurd, R. A., J 68D3-347, 311 (1964). Hurst, A. H., Bullock, E. R., (1965) M267, Paper 6, p. 119. Huskey, H. D., 306A.

Hust, J. G., Gosman, A. L., 6093. Hust, J. G., Hall, L. A., Gosman, A. L., (1964) TN217.

Hust, J. G., Stewart, R. B., (1963) TN202.

Hust, J. G., Wallace, L. D., Crim, J. A., Hall, L. A., Stewart, R. B., (1962) TN137 (PB161638).

Hutchinson, F., Gurney, P., Jr., Young, R. D., 6651. Hutchinson, J. M. R., (1960) TN71 (PB161572).

Hutchinson, J. M. R., Anspach, S. C, Garfinkel, S. B., Smith, C. N., (1965) M260-9.

Hutchinson, J. M. R., Garfinkel, S. B., 4576. Hutchison, A. W., Hoover, T. B., 4013. Hutton, R., J 69D8-548, 1169 (1965). Hutton, U. 0., Houck, J. C, 4552; 5266. Hyland, R. W., Hasekawa, S., Rhodes, S. W., 6542. Hyland, R. W., Wexler, A., (1964) Mono.73; 9087. Hyovalti, D. C, (1965) TN330.

Hyovalti, D. C, Ma, M. T., (1965) Mono.95.

Idorn, G. M., Bredsdorff, P., Kjaer, A., Plum, N. M., Poulsen, E., (1962) Pr.per VI-1, Mono.43, Vol. II, p. 749.

Iglesias, L., J 64A6-69, 481 (1960).

lizuka, K., J 69D9-559, 1243 (1965).

Iizuka, K., King, R. W. P., J 66D6-235, 775 (1962) ; J 67D4-275, 397 (1963).

Iliff, W. R., Holt, J. M., J 67D1-240, 31 (1963).

Ingalls, R. B., Wall, L. A., 4062; 4070; 4558; 6335.

Ingalls, R. P., Fricker, S. J., Mason, W. C, Stone, M. L., Swift, D. W., J 64D5-81, 455 (1960).

Inscoe, M. N., 6285. Inscoe, M. N., Gould, J. H., Brode, W. R., 3346. Inskeep, R. G., Allen, H. C, Jr., Kokoszka, G. F., 6443.

Insley, H., 33A.

Irish, C. R., Roseberg, S. J., 4943.

Isabelle, D. B., Maximon, L. C, 5937; 6327; 6328.

Isbcll, H. S., J 66A3-157, 233 (1962); Editor (1965) TN274; 4211; 4580; 5183; 6686. 433
Isbell, H. S., Fatiadi, A. J., J 67A2-202, 153 (1963); J 68A3-275, 287 (1964).

Isbell, H. S., Frush, H. L., 4474; 4475; 4723; 5182;

5440.

Isbell, H. S., Frush, H. L., Fatiadi, A. J., J 64A5-67, 433 (1960).

Isbell, H. S., Frush, H. L., Holt, N. B., J 64A4-61, 363

(1960) ; 3956.

Isbell, H. S., Frush, H. L., Moyer, J. D., J 64A4-60, 359

(1960) . Isbell, H. S., Frush, H. L., Sniegoski, L. T., 5106.

Isbell, H. S., Frush, H. L., Sniegoski, L. T., Holt, N. B., J 69A6-376, 535 (1965).

Isbell, H. S., Holt, N. B., Frush, H. L., 4473.

Isbell, H. S., Schaffer, R., 4510; 4579; 4967; 5184.

Isbell, H. S., Sniegoski, L. T., J 66A1-138, 29 (1962) ; J 67A6-241, 569 (1963); J 68A2-262, 145 (1964);

J 68A3-276, 301 (1964) ; 4721.

Isbell, H. S., Sneigoski, L. T., Frush, H. L., J 65A3-109, 249 (1961) ; 4572.

Isbell, H. S., Tipson, R. S., J 64A5-65, 405 (1960);

J 65A1-81, 31 (1961); J 65A5-125, 441 (1961);

J 66A1-139, 31 (1962) ; 4611.

Isbell, H. S., Tipson, R. S., Hague, J. L., Scribner, B. F.,- Smith, W. H., Wade, C. W. R., (1962) Mono.54.

Isbell, H. S., Weygand. F., Simon, H., Kell, K. D., Sniegoski, L. T., 4722.

Isbin, H. S., Smith, R. V., Fauske, H. K., Petrick, M., Robbins, C. H., Zuludek, F. R., 5981.

Ishikaiva, M., Miya, K., Sasaki, T., J 65D1-107, 93

(1961) . Ishimaru, A., Beich, F. R., J 66D6-236, 783 (1962). Ishimaru, A., Dobrott, D., J 65D1-102, 47 (1961). Ishimaru, A., Hasserjian, G., J 66D3-201, 335 (1962). Ishimaru, A., Tyras, G., Swarm, H. M., J 67D5-282,

501 (1963).

Ishirhara, S., West, E. D., 6541. Ish-Shalom, M., Greenberg, S. A., (1962) Paper V-S4,

Mono.43, Vol. II, p. 731.

Jacavanco, D. J., J 69D7-530, 965 (1965). Jackson, C. M., Wait, J. R., J 67D3-268, 347 (1963) ; J 67D6-296, 625 (1963); J 69D2-467, 299 (1965);

(1962) TN143 (PB161644) ; (1963) TN204; 6129. Jackson, J. E., Kane, J. A., Whale, H. A., J 66D6-224,

641 (1962). Jackson, J. E., Knecht, R. W., Russell, S., 4657; 5362. Jackson, J. K., Stair, R., Schneider, W. E., 5148. Jackson, J. K., Waters, W. R., Stair, R., Schneider, W. E., 9019. Jackson, J. L., 3190; 3191; 3516; 3550. Jackson, J. L., Coriell, S. R., (1963) TN192; 5221; 5313; 6244; 6265. Jackson, J. L., Gornick, F., 5796. Jackson, J. L., Klein, L. S., 5973; 5974; 6302. Jackson, J. L., Levine, D. B., Piccirelli, R. A., 4841. Jackson, J. W., Waxman, M., 5189. Jackson, L. J., Lifson, S., 4811. Jackson, R. W., Torgesen, J. L., 6775. Jackson, W. M., McNcsby, J. R., 4225; 5078; 5534. Jackson, W. M., McNesby, J. R., Darwent, B. deB., 4881; 5076. Jackson, W. M., Scheer, M. D., 9144. Jacobs, G., Barghausen, A., Lillie, D., 5385. Jacobs, R. B., J 65C3-65, 147 (1961); 788A; 3489; 5450; 6494. Jacobs, R. B., Hatch, M. R., 4855. Jacobs, R. B., Hord, J., Robinson, C. C., Sparks, L. L., 6235. Jacobs, R. B., Martin, K. B., 3457A.

Jacobs, R. B., Martin, K. B., Hardy, R. J., 3186A.

Jacobs, R. B., Miller, C. E., Macinko, J., 5413. Jacobs, R. B., Mullen, L. O., 5669. Jacobs, R. B., Purcell, J. R., 5831. Jacobs, R. B., Purcell, J. R., Schmidt, A. F., 3880.

Jacobs, R. B., Richards, R. J., Stetvard, W. G., (1961) TN122 (PB161623) ; 3890. Jacobs, R. B., Van Gundy, D. A., Mullen, L. 0., 3403. Jacox, M. E., Milligan, D. E., 6131; 6135; 6136; 6183; 6184; 6849; 6851. Jacox, M. E., Milligan, D. E., Bass, A., 6850. Jacox, M. E., Milligan, D. E., Bass, A. M., Comeford,

J. J., Mann, D. E., 6852. Jacox, M. E., Milligan, D. E., Comeford, J. J., Mann,

D. E., 6802. Jacox, M. E., Milligan, D. E., Mann, D. E., 6134. Jacox, M. E., Milligan, D. E., McKinley, J. D., 9026. Jacox, M. E., Milligan, D. E., Moll, N. G., Thompson, W. E., 6848.

Jaffe, I., Johnson, W. H., Prosen, E. H., J 65A1-86,

71 (1961).

Jaffe, J. H., Plyler, E. K., Hirshfeld, M. A., 5591.

Jaffe, J. H., Thibault, R. J., Plyler, E. K., J 67A2-198,

113 (1963). James, L. W., Denison, A. B., Currin, J. D., Tanttila, W. H., Mahler, R. J., 6517. James, T. C., 6143; 6144; 6353. James, T. C., Brown, R. L., 6817. James, T. C., Plyler, E. K., 6178. James, T. C, Thibault, R. J., 6311; 6387; 6800. Jamnick, P. M., Megill, L. R., 3954; 4338. Jamnick. P. M., Megill, L. R., Cruz, J. E., 3759. Janes, H. B., 5267. Janes, H. B., Kirkpatrick, A. W., Waters, D. M., Smith,

D., (1965) TN307.

Janes, H. B., Norton, K. A., Herbstreit, J. W'., Hornberg, K. 0., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Wells, P. I., Thompson, M. C, Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33.

Janes, H. B., Thompson, M. C, Jr., J 68D11-426, 1229 (1964); (1964) TN219.

Janes, H. B., Thompson, M. C, Jr., Freethey, F. E., 3441. Janes, H. B., Thompson, M. C, Jr., Kirkpatrick, J., 3423. Jansen, R. J., Koch, J. W., Harding, W. B., 3552. Jarmain, W. R., Ebisuzaki, R., Nicholls, R. W., 3549. Jarmain, W. R., Nicholls, R. W., Fraser, P. A., McEachran, R. P., 3911. Jarvis, S., Jr., (1965) TN301; (1965) TN314.

Jean, A. G., J 64D6, 638 (1960) ; 5847; 5848. Jean, A. G., Brady, A. H., Crombie, D. D., Murphy,

A. C, Steele, F. K., 6182. Jean, A. G., Chilton, C. J., Crombie, D. D., 6284. Jean, A. G., Crary, J. H., 5119. Jean, A. G., Crombie, D. D., J 68D5-362, 584 (1964)

;

5281; 6449. Jean, A. G., Lange, L. J., Wait, J. R., 2172A.

Jean, A. G., Hornback, C. E., Doherty, R. H., Winkel- man, J. R., Moore, R. T., 9057. Jean, A. G., Murphy, A. C, Wait, J. R., Wasmundt,

D. F., J 65D5-153, 475 (1961). Jean, A. G., Taggart, H. E., Wait, J. R., J 65C3-70, 189

(1961). Jean, A. G., Taylor, W. L., 5850. Jean, A. G., Taylor, W. L., Wait, J. R., 3908. Jean, A. G., Wait, J. R., 9099.

Jcfferies, J. T., 4923; 5446.

Jefferies, J. T., Orrall, F. Q., 4204; 4805; 5535; 6835;

6836.

Jefferies, J. T., Pecker, C, Thomas, R. N., 5053.

Jefferies, J. T., Thomas, R. N., 3308; 3869; 3922.

Jefferson, C. F., 9062.

Jefferson, C. F., West, R. G., 5455; 6186. Jen, M., hide, D. R., Jr., 5021; 5487; 6214. Jenkins, M. A., Crichlow, W. Q., Disney, R. T., TN18-3

18-26. Jenkins, W. D., Willard, W. A., J 66C1-88, 59 (1962) ; J 70C1-215, 5 (1966) ; 5056; 5672. Jenkins, W. D., Willard, W. A., Youden, W. J., 4317. Jennings, D. A., Hall, J. L., McClintock, R. M., 5165. Jennings, D. A., Takuma, H., 5951; 6271; 6404; 6628. 434
Jensen, M. W., (1965) H99; 4166; 4748; 4934; 4971;

5724; 6533; 6534. Jensen, M. W., Aimer, H. E., Bon-man, H. A., Macurdy,

L. B., Peiser, H. S., Wasko, B., J 68C3-159, 141

(1964). Jensen, M. W., Bussey. II". S., 8826. Jensen, M. W., Smith, R. W., (1965) H94.

Jespersen, J. L., Kamas, G., 6358. Jespersen, J. L., Lawrence, R. S., 4271. Jespersen, J. L., Lawrence, R. S., Lamb, R. C, J 65D4-

137, 333 (1961) ; J 65D4-138, 351 (1961). Jessup, R. S., Armstrong, G. T., Fano, L., Marantz, S., Mears, T. W., Walker, J. A., 4785. Jessup, R. S., Stanley, C. L., 4105.

Joel, M. L., Lottridge, D. D., (1964) TN249.

Johannesen, R. B., 3903. Johannesen, R. B., Candcla, G. A., 5456. Johannesen, R. B., Gordon, C. L., J 67A3-215, 269

(1963) . Johler, J. R., J 65D1-103, 53 (1961) ; J 65D5-156, 507

(1961); J 67D5-281, 481 (1963); J 68D1-318, 67

(1964) ; (1961) TN118 (PB161619) ; (1966) TN335; 4802; 4863; 5623; 5784.

Johler, J. R., Berry, L. A., J 66D6-234, 737 (1962) ; (1964) Mono.78; (1965) TN313; 5538.

Johler, J. R„ Harper, J. D., Jr., J 66D1-176, 81 (1962) ; (1963) TN164; 5532.

Johler, J. R., Lilley, C. M., (1961) TN132 (PB161633) ; 4100.

Johler, J. R., Morgenstern, J. C., (1965) TN310; 8962.

Johler, J. R., Walters, L. C., J 66D1-177, 101 (1962).

Johler, J. R., Walters, L. C, Harper, J. D., Jr., (1960) TN69 (PB161570).

Johler, J. R., Walters, L. C., Lilley, C. M., (1960) TN60

(PB161561).

Johnson, A., J 69C1-178, 1 (1965). Johnson, C. R., Rosenberg, S. J., 4546. Johnson, D. P., Lloyd, E. C., 3792. Johnson, D. P., Melton, B. S., 4993. Johnson, D. P., Thomas, A. M., Little, J. W., 4569. Johnson, E. G., Jr., (1966) TN311; (1966) TN336;

6521. Johnson, H., Deslattes, R. D., 8959. Johnson, H. D., Phillips, C. W., Goddard, W. F., Achenbach, P. R., Penney, R. W., 3395. Johnson, H. R., Athay, R. G., 3830. Johnson, H. R., Rohrlich, F., 3264. Johnson, M. E., Barsis, A. P., J 66D6-227, 681 (1962) ; (1961) TN88 (PB161589).

Johnson, M. E., Dougherty, H. T., (1964) TN228.

Johnson, M. E., Gierhart, G. D., (1965) TN324.

Johnson, V. A., Frederikse, H. P. R., 3356A.

Johnson, V. J., 3824; 6156. Johnson, V. J., Corruccini, R. J., Mcintosh, G. E., Scott, R. B., 3171A.

Johnson, V. J., Stewart, R. B., 3376. Johnson, W. C., Laaspere, T., Walkup, J. F., J 69D3-

478, 407 (1965). Johnson, W.E., (1961) TN111 (PB161612).

Johnson, W. E., Norton, K. A., Herbstreit, J. W., Janes, H. B., Hornberg, K. 0., Peterson, C. F., Barhausen,

A. F., Wells, P. I., Thompson, M. C., Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33.

Johnson, W. H., Ambrose, J. R., J 67A5-231, 427

(1963). Johnson, W. H., Gilliland, A. A., J 65A1-83, 59 (196fT;

J 65A1-84, 63 (1961) ; J 65A1-85, 66 (1961). Johnson, W. H., Gilliland, A. A., Prosen, E. J., J 64A6-

74, 515 (1960). Johnson, W. H., Jaffe, I., Prosen, E. J., J 65A2-86, 71 (1961). Johnson, W. H., Kilday, M. V., Prosen, E. J., J 64A6-

75, 521 (1960); J 65A1-86, 71 (1961); J 65A2-91,

101 (1961); J 65A3-104, 215 (1961); J 65A5-124,

435 (1961). Johnson, W. H., Sunner, S., 5760.

Johnson, W. H., Wilson, I. H., Schumm, R. B., Prosen,

E. J., J 65A2-90, 97 (1961). Johnston, A. R., Weingart, J. M., (1964) M256, p. 113. Johnston, R. G., Madden, R. P., 8921. Johnston, R. G., Stair, R., Halbach, E. W., J 64A4-51,

291 (1960). Johnston, T. L., (1963) Mono.59, p. 63. Jones, D. L., (1962) TN155; 4319; 4852. Jones, D. L., Chapman, F. W., J 68D11-418, 1177

(1964). Jones, D. L., Eanishaw, K. B., (1962) TN148 (PB161-

649). Jones, D. L., Gallet, R. M., 4767. Jones, D. L., Gallet, R. M., Watts, J. M., Frazer, D. TV., (1963) TN166 (PB181454).

Jones, E., 6520. Jones, E., Edelman, S., Sizemore, K. S., 3991; 4512. Jones, E., Schmidt, V. A., Edelman, S., Smith, E. R., 4209. Jones, F. E., J 66C3-97, 209 (1962) ; Paper III-3, Mono.

43, Vol. I, p. 204; 5557; 6567. Jones, F. E., Castle, A. B., Sr., 5457. Jones, F. E., Wexler, A., 3372. Jones, P. E., (1965) M269, p. 3. Jones, R. M., Agy, V., Baker, D. M., (1965) TN306.

Jones, R. N., J 68C4-170, 243 (1964) ; (1963) TN201.

Jones, R. N., Nelson, R. E., 5042. Jones, S. A., 4363. Jones, W.B., (1962) TN142 (PB161643).

Jones, W. B., Gallet, R. M., J 66D4-205, 419 (1962) ; J 66D6-225, 649 (1962); (1965) TN305 ; 3594; 5040; 8993. Jones, W. B., Graham, R. P., Leftin, M., (1965) TN337.

Jones, W. B., Hinds, M. E., (1963) TN181.

Jordan, H. F., Larsen, S. Y., Kilpatrick, J. E., Keb,

E. H., 9051. Jorgensen, C. K., Trees, R. E., 4214. Jorgensen, T. S., J 69D9-558, 1239 (1965). Joseph, H. M., 3895. Joseph, L., Mazur, J., 5695.

Joss, J. W., Davis, J. R., Rohlfs, D. C, Skaggs, G. A., J 69D12-619, 1659 (1965).

Joyet, G., Pruitt, J. S., Allisy, A., Pohlit, W., Tubiana,

M., Zupancic, C, J 66C2-91, 107 (1962). Judd, D. B., 3435; 3927; 3988; 4165; 6342; 9027. Judd, D. B., Chamberlin, G. J., Haupt, G. W., J 66C2-

93, 121 (1962) ; 5007. Judd, D. B., Keegan, H. J., Schleter, J. C, J 66A3-154,

203 (1962). Judd, D. B., MacAdam, D. L., Wyszecki, G., 6383. Judd, D. B., Nimeroff, I., 6382A. Judson, L. V., (1960) M233.

K Kaeser, R. S., Ambler, E., Dove, R. B., 5134. Kaeser, R. S., Hoppes, D. D., Ambler, E., Hauivard,

R. W., 4164. Kaeser, R. S., Hudson, R. P., 4305. Kaeser, R. S., Hudson, R. P., Radford, H. E., 3613. Kahalas, S. L., 69D8-549, 1179 (1965). Kahan, D. J., Logan, H. L., McBee, M. J., 6746. Kahn, A. H., 3524; 4222; 4822. Kahn, A. H., Frederikse, H. P. R., 3276. Kahn, A. H., Frederikse, H. P. R., Becker, J. H., 6026A. Kahn, A. H., Hernandez, W. C, Jr., J 67A4-218, 293

(1963). Kahn, A. H., Lcyendecker, A. J., 6032; 6033. Kahn, A. H., Payne, R. D., Forman, R. A., 6897. Kahn, N., Marcus, M., 3936. Kaiser, J., Kay, I., J 68D4-359, 515 (1964). Kalmus, H. P., 1011A. Kamas, G., Jespersen, J. L., 6358. Kamper, R. A., Collier, R. S., Ohori, Y., 6797. Kanagy,J. R., 4035; 4117; 4376; 5454; 6429. Kanagy, J. R., Mandel, J., 9002. 435
Kane, J., Karp, S. N., J 68D3-346, 303 (1964). Kane, J. A., Jackson, J. E., Whale, H. A., J 66D6-224,

641 (1962). Kantorovich, L. V., Greub, W., Rheinboldt, W., 3269. Kantro, K. L., Copeland, L. E., Verbeck, G., (1962) Paper IV-3, Mono.43, Vol. I, p. 429. Kanwal, R. P., Truesdell, C, 3515. Kaplan, A. M., Dahl, S., 3666; 4036. Kaplan, M. F., 4019. Karbowiak, A. E., Solymar, L., J 65D1-105, 75 (1961). Karlin, J. E., Alexander, S. N., 4532. Karp, A., Allison, J., J 68D5-365, 663 (1964). Karp, S. N., Bazer, J., J 66D3-200, 319 (1962). Karp, S. N., Kane, J., J 68D3-346, 303 (1964). Kartaschoff, P., Bonanomi, J., Newman, L. J., Atkinson, W. R., 5868. Katz, I., Spetner, L. M., J 64D5-83, 483 (1960). Katz, I. J., Pearl, M. H., J 70B1-167, 47 (1966). Katzin, J. C, Anient, W. S., Katzin, M., Koo, B. Y-C,

J 68D4-355, 379 (1964). Katzin, M., Anient, W. S., Katzin, J. C, Koo, B. Y-C,

J 68D4-355, 379 (1964). Kaufman, V., 5126. Kaufman, V., Andrew, K. L., 4672. Kaufman, V., Sugar, J., 9031. Kavalerova, V. I., Bozhenov, P. I., Salnikova, V. S., Suvorova, G. F., (1962) Paper III-S12, Mono.43,

Vol. I, p. 327. Kay, I., J 68D7-381, 849 (1964). Kay, I., Kaiser, J., J 68D4-359, 515 (1964). Kay, I., Swerling, P., J 68D9-405, 1035 (1964). Kazes, I., J 69D12-591, 1561 (1965). Kearsley, E. A., J 67B4-106, 245 (1963); 3421; 3450;

5070. Kearsley, E. A., Bernsyein, B., Zapas, L. J., J 68B3-123,

103 (1964) ; 5167; 6722. Kearsley, E. A., Green, M. S., 3832. Keb, E. H., Larsen, S. Y., Kilpatrick, J. E., Jordan, H. F., 9051. Keegan, H. J., Gates, D. M., Schleter, J. C., Weidncr,

V. R., 9028. Keegan, H. J., Schleter, J. C., Belkap, M. A., J 67A6-

243, 577 (1963) ; 6337. Keegan, H. J., Schleter, J. C., Judd, D. B., J 66A3-154, 203 (1962). Keegan, H. J., Schleter, J. C., Weidner, V. R., 6715. Keeler, R. N., Purcell, J. R,, 3760. Keeler, R. N., Weitzel, D. H., Blake, J. H., Konecnik,

M., 3382. Keery, W. J., Marsden, C. P., Moffitt, J. K., 4629.

Keffer, C. J., Mauer, F. A., Reeves, R. B., Robinson, D. W., 8946. Keith, H. D., Passaglia, E., J 68A5-297, 513 (1964). Keith, J. C., J 67D5-285, 533 (1963).

Kell, K. £>., Weygand, Simon, H. F., Ishell, S. H., Sniegoski, L. T., 4722.

Keller, G. V., Frischknecht, F. C., J 64D5-79, 439

(1960).

Keller, J. B., Chen, Y. M., J 66D1-170, 15 (1962).

Keller, R. A., 9003.

Keller, R. A., Hadlo/, S. G., 6753. Kellermann, K. I., J 69D12-595, 1574 (1965).

Kelley, R. D., Klein, R., Sheer, M. D., 5996; 6785.

Kelly, F. J., J 69B3-148, 165 (1965).

Kelly, F. J., Moore, D. G., 6570. Kelly, K. L., (1962) TN152; 4924; 5449; 6575; 9120.

Kelly, R. D., Williams, R. H., Cowan, W. T., J 69D7-

535, 1003 (1965). Kenington, H. W., Neville, A. M., (1962) Paper V-Sl,

Mono.43, Vol. II, p. 703. Kennedy, D. J., Carr, T. D., Bulkis, S., Smith, A. G., May, J., Lebo, G. R., Bollhagen, H., 3 69D12-584,

1530 (1965). Kerns, D. M., 5376. Kerns, D. M., Beatty, R. W., 6343. Kerns, D. M., Culshaw, W., Richardson, J. M., 3719A.

Kerns, D. M., McPherson, A. C, 16A.

Kerper, M. J., Scuderi, T. G., 5472; 5963; 6217. Kerry, W. J., Marsden, C. P., Moffitt, J. K., (1961) H70.

Kessler, K. G., Barger, R. L., 3485; 3757; 4141. Kessler, K. G., Barger, R. L., Schweitzer, W. G., Jr., 3636A.

Kessler, K. G., Bass, A. M., 3240. Kessler, K. G., Schweitzer, W. G., Jr., 5857; 9148. Kessler, M. M., (1965) M269, p. 193. Kettering, C. A., Meissner, P., Cunningham, J. A., 3376A.

Keubler, N. A., Bass, A. M., Nelson, L. S., 6238. Keulegan, G. H., 3202. Keulegan, G. H., Carpenter, L. H., J 64C3-42, 241

(1960) . Keulegan, G. H., McNown, J. S., 3368A.

Kevorkian, H. K., Passaglia, E., 5759. Key, L., Atkinson, W. R., Newman, I., 5683. Keysar, B. C, Hughes, J. C, (1963) Mono.62.

Kholin, I. I., Royak, S. M., (1962) Paper VIII-S3, Mono.43, Vol. II, p. 1057. Khoury, F., J 70A1-385, 29 (1966). Kidnay, A. J., Hiza, M. J., 4345; 5130; 5732. Kieburtz, R. B., J 68D7-376, 795 (1964).

Kieffer, L. J., Dunn, G. H., 5300. Kies, J. A., Wolock, I., Newman, S. B., 3214.

Kiess, C. C, J 66A2-146, 111 (1962).

Kiess, C. C, Corliss, C. H., Kiess, H. K., 3538; 3566. Kiess, C. C, Rubin, V. C, Moore, C. E., J 65A1-80, 1 (1961) . Kiess, C. C, Thekaekara, M. P., 3297.

Kiess, H. K., Kiess, C. C, Corliss, C. H., 3538; 3566.

Kiess, N. H., J 67A4-223, 343 (1963).

Kiess, N. H., Bass, A. M., 1184A.

Kiess, N. H., Broida, H. P., 4219. Kildahl, K., DeGregorio, J. F., Finney, J. W., Smith, E.

K., 4886. Kilday, B. A., Michaelis, R. E., 4573; 4961. Kilday, B. A., Michaelis, R. E., Alvarez, R., J 65C1-57,

71 (1961). Kilday, M. V., Johnson, W. H., Prosen, E. J., J 64A6-75,

521 (1960); J 65A2-91, 101 (1961); J 65A3-104,

215 (1961); J 65A5-124, 435 (1961). Kilday, M. V. Prosen, E. J., J 68A1-261, 127 (1964) ; 3563A.

Kilduff, T. J., Mann, C. W., Randall, E. B., Jr., Mandel,

J., Charles, A. M., 342A.

Kilpatrick, J. E., Larsen, S. Y., Keb, E. H., Jordan, H.

F., 9051. Kim, H. G., Mclntyre, D., Williams, L. C, Hexner, P.

E., Weber, F. N., Bunting, R. F., Kupke, D. W.,

4534. Kimmel, W. D., Caul, H. J., Crowell, W. E., Paffenbarger, G. C, 6003. King, E. P., (1964) TN238, p. 7. King, G. A. M., J 64D5-87, 501 (1960) ; 5027. King, G. A. M., Bullen, J. M., J 67D4-272, 383 (1963). King, G. A. M., Davies, K., J 65D4-136, 323 (1961). King, G. A. M., Roach, F. E., J 65D2-110, 129 (1961). King, R., Harrison, C. W., J 64D4-70, 365 (1960). King, R. B., Corliss, C. H., Olsen, K. H., 8928. King, R. C, Armstrong, G. T., J 68A6-315, 661 (1964). King, R. J., Maley, S. W., J 65D2-118, 183 (1961) ; J 66D2-185, 175 (1962); J 68D2-328, 157 (1964); J

68D3-345, 297 (1964); J 69D10-571, 1375 (1965). King, R. W. P., Gooch, D. W., Harrison, C. W., Jr., Wu, T. T., J 67D3-269, 355 (1963). King, R. W. P., Harrison, C. W., Denton, D. H., J 65D4-

141, 371 (1961). King, R. W. P., Iizuka, K., J 66D6-235, 775 (1962) ; J 67D4-275, 397 (1963). King, R. W. P., Prasad, S., J 65D5-150, 449 (1961). King, R. W. P., Wu, T. T., J 69D3-481, 429 (1965). Khiqcry, W. D., Coble, R. L., (1963) Mono.59, p. 103. Kirby, R. C, Bailey, D. K., Cottony, H. V., Norton, K. A., Slutz, R. J., Davis, R. M., Merrill, R G., 3737. 436
Kirby, R. C, Blair, J. C, Davis, R. M., Jr., J 65D5-146,

417 (1961). Kirby, R. K., 5820. Kirby, R. S., 5451. Kirby, R. S., Barsis, A. P., J 65D5-149, 437 (1961) ; 4407. Kirby, R. S.. Barsis, A. P., Barghauscn, A. F., 5711. Kirbn, R. S., Dougherty, H. T., McQuate, P. L., 1421 A.

Kirby, R. S., Rice, P. L., Moloney, L. J., (1961) TN95

(PB161596).

Kirch, J. E.. Ross, J. M., J 65D4-143, 393 (1961).

Kirehhoff, W. H., Farren, J. Linnett, J. W., 6618. Kirchhoff, W. H., hide, D. R., Jr., 6869. Kirkpatrick, A. W., Norton, K. A., Herbstreit, J. W.,

Janes, H. B., Hornberg, K. 0., Peterson, C. F., Barghauscn. A. F., Johnson, W. E., Wells, P. I., Thompson, M. C, Jr., Vetter, M. J., (1961) Mono.-

33. Kirkpatrick, A. W., Norton, K. A., Waters, D. M., Smith, D., (1965) TN307.

Kirkpatrick, H. B., Amclinckx, S., 4578. Kirkpatrick, H. B., Delavignette, P., Amelinckx, S., 4041. Kirkpatrick, H. B., Haynes, W. D., Jr., Tighe, N. J., 4857. Kirkpatrick, H. B., McGandy, E. L., Richmond, J. C,

2302A.

Kirkpatrick, H. B., Richmond, J. C, Harrison, W. N., 929A.

Kirkpatrick, J., Thompson, M. C, Jr., Janes, H. B., 3423. Kirkwood, J. G., Rice, S. A., Ross, J., Zwanzig, R. W., 3315. Kirsch, R. A., 3188; 5965. Kissinger, C. W., 1310A.

Kissinger, C. W'., Wildhack, W. A., Perls, T. A., Hayes,

J. W., 6657. Kissinger, H. E., Burley, G., J 64A5, 403 (1960). Kissinger, H. E., Newman, S. B., 4584. Kivelson, D., Wilson, E. B., Jr., hide, D. R., Jr., 3648. Kjaer, A., Bredsdorff, P., Idorn, G. M., Plumb, N. M., Poulsen, E., (1962) Paper VI-1, Mono.43, Vol. II, p. 749. Klebanoff, P. S., Frenkiel, F. N., 6783; 9122. Klebanoff, P. S., Tidstrom, K. D., 3206. Klebanoff, P. S., Tidstrom, K. D., Sargent, L. M., 5063. Klein, E. I., 3384. Klein, F. S., Herron, J. T., 6192; 6195. Klein, L. S., Jackson, J. L., 5973; 5974; 6302. Klein, M., J 70A3-402, 259 (1966) ; 5523; 5927. Klein, M., Green, M. S., 5524. Klein, M., Hilsenrath, J., 9055. Klein, R., 6240. Klein, R., Horl, E. M., 3598. Klein, R., Kelley, R. D., Sheer, M. D., 6785. Klein, R., Leder, L., 4088; 4339; 5133; 5357; 5358. Klein, R., Little, J. W., 5941.

Klein, R., Little, J. W., Madey, T. E., 9141.

Klein, R., Marton, T. W., (1960) TN75 (PB161576) ; (1964) TN234.

Klein, R., McNesby, J. R., Scheer, M. D., 3597. Klein, R., Scheer, M. D., 3291; 3334; 4109; 4344; 4745; 5392; 6279; 6336. Klein, R., Scheer, M. D., Kelley, R., 5996. Klein, R., Scheer, M. D., McNesby, J., 5108. Klein, R., Scheer, M. D., Waller, J., 3858. Kleinman, D., Goldman, A. J., 6058. Klemperer, W. K., 5320; 6601. Klemperer, W. K., Beckman, P., J 65D12-621, 1669

(1965) . Klemperer, W. K., Ochs, G. R., 8972. Klemperer, W. K., Ochs, G. R., Bowles, K. L., 6325. Kline, G. M., 744A; 3138; 3586; 4230; 4310; 4490;

4842; 5008; 5497; 5570; 5573; 5574; 5988; 6291;

6299; 9037. Kline, G. M., Brauer, G. M., 6632. Kline, G. M., Stromberg, R. R., 3963.

Klose, J. Z., 6609. Kloss, K. E., J 69B4-164, 335 (1965). Klostermeyer, J., Becker, W., Riister, R., J 69D8-541,

1083 (1965). Klucher, T. M., Morokuma, T., Nefflen, K. F., Lawrence,

T. R., 5418. Knecht, R. W., J 68D5-362, 578 (1964); 3130; 3268;

3688; 5090; 5826A; 6330; 9071. Knecht, R. W., Calvert, W., VanZandt, T. E., 6161. Knecht, R. W., Calvert, W., VanZandt, T. E., Goe, G. B., 4640. Knecht, R. W., Davies, K., 4235; 4292; 4332. Knecht, R. W., Hirsch, A. J., 4806. Knecht, R. W., Jackson, J. E., Russell, S., 4657. Knecht, R. W., MacDonald, N., 3389; 3948. Knecht, R. W., McDuffie, R. E., 4814; 4912. Knecht, R. W., Rishbeth, H., VanZandt, T. E., 6250. Knecht, R. W., Russell, S., 4867. Knecht, R. W'., Russell, S., Jackson, J. E., 5362. Knecht, R. W., VanZandt, T. E., 5671; 6482. Knecht, R. W., VanZandt, T. E., Calvert, W., Goe, G. B., 5342. Knecht, R. II'., VanZandt, T. E., Russell, S., 4089. Knecht, R. W., VanZandt, T. E., Watts, J. M., 5023; 5162; 6181. Kneisly, J. A., 6181. Knipling, P., Taylor, J. K., Smith, F., 3726. Knobler, C, Schoen, L. J., Mann, D. E., White, D., 4902. Knopp, C. M., Cohn, G. I., J 68D4-354, 363 (1964). Knopp, C. M., Swift, C. T., J 69D3-482, 447 (1965). Knopp, M. I., Bleicher, M., J 69B4-156, 265 (1965). Knopp, M. I., Lehner, J., Newman, M., 6540. Knopp, M. I., Newman, M., J 69B1&2-137, 85 (1965). Knorr, T. G., Vaughan, D. A., Dettorre, J. F., (1964) M256, p. 245. Knudsen, F. P., 3175; 4618. Knudsen, F. P., Parker, H. S., Burdick, M. D., 3543. Knudsen, F. P., Spinner, S., Stone, L., J 67C1-118, 39 (1963) ; J 67C2-122, 93 (1963). Koch, H. W., 6023. Koch, H. W., Donnert, H. J., Havens, W. W., Jr., Rogosa, G. L., Rosen, L., (1966) TN283.

Koch, H. W., Eisenhower, E. H., 6727A.

Koch, H. W., Motz, J. W., 3154. Koch, H. W., Motz, J. W., Olsen, H., 6030. Koch, H. W., Pruitt, J. S., 5283. Koch, H. W., Wyckoff, J. M., 3916. Koch, H. W., Wyckoff, J. M., Ziegler, B., Uhlig, R., 9117. Koch, H. W., Ziegler, B., Wyckoff, J. M., 6516. Koch, J. A., Carson, W. B., Pope, J. H., Gallet, R. M., Koch, J. 'A., Edens, V. C, (1964) TN226.

Koch, J. A., Watts, J. M., Gallet, R. M., J 67D5-290,

569 (1963). Koch, J. W., 3210. Koch, J. W., Beery, W. M., J 66D3-197, 291 (1962). Koch, J. W., Harding, W. B., Jansen, R. J., 3552. Koch, J. W., Petrie, H. E., J 66D2-183, 159 (1962). Kodis, R. D., J 65D1-99, 19 (1961). Koenig, H. E., Bacon, C. M., (1965) M267, Paper 2, p.

11. Kogelnik, H., J 64D5-90, 515 (1960). Kohr, C. B., Danos, M., Greiner, W., 6258; 6710; 9072. Koidan, W., 3639; 3642; 4269; 5393. Koidan, W'., Burkhard, M. D., Corliss, E. L. R., Biagi,

F., 3453. Koidan, W., Cook, R. K., Edelman, S., 6621. Koidan, W., Siegel, S., 6089. Kokoszka, G. F., Allen, H. C, Jr., Gordon, G., 6732;

6733. Kokoszka, G. F., Allen, H. C, Jr., Inskeep, R. G., 6443. Kokoszka, G. F., Reimann, C. W., Allen, H. C, J 70A1-

380, 1 (1966).

Koller, H. R., Marden, E. C, (1961) TN85 (PB161586) ; 6309. 437
Roller, H. R., Marden, E. C, Pfeffer, H., 3227.

Kolthoff, I. M., Bruckenstein, S., Bates, R. G., 6578. Kondo, R., (1962) Paper II-S6, Mono.43, Vol. 1, p. 107; (1962) Paper VI-S4, Mono.43, Vol. II, p. 881. Konecnik, M., Keeler, R. N., Weitzel, D. H., Blake, J. H., 3382. Konouck, B. C, Mclntyre, D. M., O'Mara, J. H., 3365. Koo, B. Y-C, Ament, W. S., Katzin, J. C, Katzin, M., J 68D4-355, 379 (1964). Koonce, C. S., Schooley, J. F., Hosier, W. R., Ambler,

E., Becker, J. H., Cohen, M. L., 6682. Kostkowski H. J., 3812. Kostkoivski, H. J., Bass, A. M., 4590. Kostkoivski, H. J., Burns, G. W., 5816. Kostkowski, H. J., Garvin, D., Broida, H. P., 3464. Kostkowski, H. J., Hattenburg, A. T., 4648. Kostkowski, H. J., Lee, R. D., (1962) Mono.41; 5071. Kotelnikov, V. A., J 69D12-617, 1634 (1965). Kraichman, M. B., J 66D4-212, 499 (1962) ; J 66D6-233,

731 (1962); J 67D4-278, 433 (1963); J 69D3-480, 423 (1965). Kramer, W., (1962) Paper VIII-2, Mono.43, Vol. II, p. 957. Krasnansky, V. J., Achhammer, B. G., Parker, M. S., 4048. Krasnansky, V. J., Parker, M. S., Achhammer, B. G., 6012. Krasley, P. A., 3467. Kruslry, P. A., Lamb, V. A., 3555. Krasley, P. A., Metzger, W. H., Jr., Ogburn, F., 3898. Krauss, M., J 68A6-312, 635 (1964) ; J 68B1-114, 35 (1964) ; 4400; 5379. Krauss, M., Dibeler, V. H., Reese, R. M., 6845. Krauss, M. Dibeler, V. H., Reese, R. M., Harellee, F. N., 6843. Krauss, M., Edmiston, C., 6653. Krauss, M., Lester, W. A., 6100. Krauss, M., Mies, F. H., 6808. Krauss, M., Padgett, A., 3525. Krauss, M., Ransil, B. J., 3773A.

Krauss, M., Rosestock, H. M., 4561; 5608. Krauss, M., Wacks, M. E., 4095. Krauss, M., Wallenstcin, M. B., 4129. Krauss, M., Weiss, A. W., 6281. Kreith, F., Beck, D. R., Kropschot, R. H., 5880. Kreith, F., Dean, J. W., Brooks, L., 5261A. Krewson, C. F., Wood, J. W., Wolfe, W. C., Mitchel,

J. W., Marth, P. C., 3325. Krieger, L. A., Armstrong, G. T., 4678. Krinsky, A., Parker, R. L., 5319. Krishnamachari, S. L. N. G., Broida, H. P., 4050. Krishnamachari, S. L. N. G., Nicholls, R. W., 3684. Krishnamachari, S. L. N. G., Nicholls, R. W., Broida, H. P., 4066.

Kroll, W. D., Chi, M., J 66C4-109, 331 (1962).

Kroll, W. D., Mordifin, L., Garland, W. A., 745B.

Kropschot, R. H., 3171; 4184; 4734; 4757; 5675. Kropschot, R. H., Arp. V., 4288; 4328; 4329; 4679. Kropschot, R. H., Arp., V. D., Craig, T. S., 5011. Kropschot, R. H., Arp., V. D., Wilson, J. H., Love, W.

F. , Phelna, R., 4331. Kropschot, R. H., Beck, D. R., Kreith, F., 5880. Kropschot, R. H., Burgess, R. W., 5559. Kropschot, R. H., Cline, D., 4481; 5059. Kropschot, R. H., Cline, D., Arp., V., Wilson, J. H., 5041. Kropschot, R. H., Gygax, S., 6412, 6425. Kropschot, R. H., Gygax, S., Olsen, J. L., 6080. Kropschot, R. H., Hunter, B. J., Schrodt, J. E., Fulk, M. M., 3637. Kropschot, R. H., McClintock, R. M., Van Gundy, D. A., 3244. Kropschot, R. H., Schrodt, J. E., Fidk, M. M., Hunter,

B. J., 3656. Kruger, J., (1964) M256, p. 131; 3232; 3343; 4368;

5548. Kruger, J., Ambs, W. J., 3275; 3742.

Kruger, J., Calvert, J. P., 6468. Kruger, J., Reid, W. E., 6272. Kruger, J., Stern, K. H., 4958. Kruger, J., Yolken, H. T., 6352; 8923. Krupenie, P. H., 5414. Krupcnie, P. H., Weissman, S., 8949. Kruskal, J. B., Auman, R. J., 3142A.

Kryder, S. J., Maryott, A. A., 3266; 5952; 6695. Ksienski, A., J 68D4-359, 446 (1964). Ku, H. H., 5150. Ku, H. H., Hockersmith, T. E., 9125. Ku, H. H., Kullback, S., Kupperman, M., J 66B4-87, 217

(1962) ; 4978. Kuder, M. L., J 65C1-50, 1 (1961). Kuehner, E. C, J 67A1-189, 15 (1963). Kuehner, E. C, Leslie, R. T., 4418; 4602; 5301; 5997. Kugler, M., Carter, J. C, Coyne, J. J., Meshkov, S., Horn, D., Lipkin, H. J., 9053. Kugler M., Harari, H., Horn, D., Lipkin, H. J., Meshkov, S., 6861. Kugler, M., Horn, D., Lipkin, H. J., Carter, J. C,

Coyne, J. J., 9142. Kuhns, J. L., (1965) M269, p. 33. Kullback, S., Kupperman, M., Ku, H. H., J 66B4-87, 217

(1962) ; 4978. Kumpula, J. W., 4244. Kumpula, J. W., Caul, H. J., 6560. Kmnpula, J. W., Forziati, A. F., Barone, J. J., 5826. Kumpula, J. W., Taylor, D. F., Perkins, R. R., 4517. Kumpula, M. P., Forziati, A. F., 4660. Kumpula, M. P., Paffenbarger, G. C, 6647. Kumpula, M. P., Paffenbarger, G. C, Forziati, A. F., 3117. Kunde, M. L., Likins, R. C, Posner, A. S., Craven, D.

L., 3161. Kunz, K. S.. J 67D4-277, 417 (1963). Kupke, D. W., Mclntyre, D., Williams, L. C, Hexner,

P. E., Kim, H. G., Weber, F. N., Bunting, R. F., 4534. Kupperman, M., Kullback, S., Ku, H. H., J 66B4-87, 217

(1962) ; 4978. Kurczyk, H. G., Schwiete, H. E., (1962) Paper III-S13, Mono.43, Vol. I, p. 349. Kurkiian, B., Zelen, M., 4415; 4650. Kurzweg, U. H., Broida, H. P., 3367. Kushncr, L. M., Parker, R. L., 4102. Kushner, L. M., Ruff, A. W., Jr., 3288; 5527. Kusters, N. L., Sze, W. C, Harris, F. K., Petersen, 0., Moore, W. J. M., 5913. Kusuda, T., 6619. Kusnda, T., Achenbach, P. R., 6236. Kusuda, T., Achenbach, P. R., Drapeau, F. J. J., 4743. Kutuza, B. G., Basharinov, A. E., J 69D12-601, 1580

(1965). Kuyatt, C. E., Mielczarek, S. R., Simpson, J. A., 6042. Kuyatt, C. E., Simpson, J. A., J 67C4-138, 279 (1963) ; 5280; 5707; 6127. Kuyatt, C. E., Simpson, J. A., Mielczarek, S. R., 5330;

6721. Kwart, H., Finegold, H., 4982.

Laaspere, T., Johnson, W. C, Walkup, J. F., J 69D3-

478, 407 (1965). Labrie, R. J., 5942. Labrie, R. J., Lamb, V. A., 3123; 5827. Lafferty, W. J., Lide, D. R., 6354. Lafferty, W. J., Lide, D. R., Toth, R. A., 6799. La ffcrii,, W. ./., Maki, A. G., 6483.

LatTcrt),. W. J., Maki, A. G., Plyler, E. K., 6113. Lafferiu, W. J., Plyler, E. K., J 67A3-208, 225 (1963) ; 4781.

Lafferty, W. J., Plyler, E. K., Tidwell, E. D., 4695.

Laffcrtif, W. J., Thibault, R. J., 6114. LaForce, R. C, Streever, R. L., Bennett, L. H., Day, G.

F., 4794; 5521. 438
Lagnesc, J. E., 6552; 9079. LaGrone, A. H., Dcam, A. P., Walker, G. B., J 68D8-

387, 895 (1964). Lakshminarai/an, K. N., Aiya, S. V. C, J 69D10-569,

1351 (1965). Lam, P. G., Jr., Wachtman, J. B., Jr., Tefft, W. E., J 66A6-181, 465 (1962); 4414. Lam. D. G.. Jr., Wachtman, J. B., Tefft, W. E., Epstein, W. S., 4084. Lam, D. G., Jr., Wachtman, J. B., Tefft, W. E., Stinchficld, R. P., 3514. Lamb. R. C, Lawrence. R. S., Jcspcrsen, J. L., J 65D4-

137. 333 (1961); J 65D4-138, 351 (1961). Lamb, V. A., 5823. Lamb, V. A., Connor, J. H., 4030. Lamb, V. A., Krasley, P. A., 3555. Lamb, V. A., Labrie, R. J., 3123; 5827. Lamb, V. A., Reid, W. E., Jr., 3526. Lamb, V. A., Sahnon, H. I., 4630. Lamb, V. A., Sligh, J. L., 4000. Lamb, V. A., Thomas, C. T., 5431. Lamb, V. A., Valentine, D. R„ 8942. Lamb. V. A., Young, J. P., 3287; 4232. Lamkin, J. C, Tonkin, A., 3977. Lampard. D. G., Cutkosky, R. D., 3777. Lamperti, P. J., Wychoff, H. O., J 69C1-184, 39 (1965). Lance, H. W., 3851; 6024. Landgrebe, A. R., McClendon. L. T., DeVoe, J. R., 9050. Lane, J. A., Bean, B. R., J 67D6-291, 589 (1963). Lane, J. A., Bean, B. R., Dutton, E. J., Frank, V. R., Sweezy, W. B., 5159. Lane. J. A., Bean, B. R., Dutton, E. J., Sweezy, W. B., J 67D6-293, 605 (1963). Lane, J. A., Bean, B. R., Frank, V. R., J 67D6-292,

597 (1963).

L.ange, L. J., Jean, A. G., Wait, J. R., 2127A.

Longer, R. M., Vinti, J. P., J 67C3-135, 247 (1963). Larry, D., Carpenter, F. G., Deitz, V. R., 4716; 5791. Larsen, D. M., 5213; 6040; 6297. Larsen, N. T., 4732. Larsen, N. T., Case, W. E., 5438. Larsen, N. T., Engen, G. F.. J 68D5-360, 527 (1964). Larsen, S. Y., Blatt, J. M., Luness, J. N.. 5824. Larsen, S. Y., Kilpatrick, J. E., Keb, E. H., Jordan, H. F., 9051. Larsen, S. Y., Levelt-Sengers, J. M. H., 8911. Larsen, S. Y., Mountain, R. D., Zwanzig, R., 8922. Larsen, T., J 66D1-169, 7 (1962); j 66D2-187, 189

(1962). Larsen, T., Hansen, J., J 66D2-188, 205 (1962). Larson, E. N., Greene, F. M., 4656. Larson, R. E., (1963) M248, p. 49; 4768; 6208; 6209;

6867. Larson, R. E., Desch, R. F., 4508; 5214. Larson, W., (1963) TN177; (1965) TN229; 4488;

5196; 6138; 6771. Lashof, T. W., 4494: 5202; 5583; 5923; 6332. Lashof, T. W., Mandel, J., 3336; 3630. Lashof, T. W., Patek, J. M., 4705. Lashof, T. W., Spring. C. P., Maton, G. L., 3195.

Lasitter, H. A., Eldred, R. A., Roberts, J., J 68D10-414,

1145 (1964). Latmiral, G., Franceschetti, G., Vinciguerra, R., J 67D3-267, 331 (1963). Latmiral, G.. Sposito, A., J 66D1-171, 23 (1962). Laufer, A. H., McNesby, J. R., 6691; 8940A.

Laufer, A. H., Pirog, J. A., McNesby, J. R., 6717. Laufer. J. S., 6780. Lang, 0. B., 3924; 4248. Laug, 0. B., Shapiro. G., Rogers, G. J., Fulcomer, P. M.. Jr.. (1964) Mono.83; 6314. Laughlin. W. L., 5563. Laurie, V. W., 3258; 3646; 4178; 4179. Laurie, V. W.. Lide, D. R., Jr., 3257. Lauritzen, J. L, Jr., 5748. Lauritzen. J. I., Jr., Hoffman, J. D., J 65A4-114, 297

(1961) ; 3213A.

Lauritzen, J. I., Jr., Scott, A. H., Scheibcr, D. J., Curtis, A. J., Hoffman, J. D., J 66A4-162, 269 (1962). LaVilla, R. E., Bauer, S. H., 5800; 5801. LaVilla, R. E., Mcndlowitz. 11., 4817; 6268; 8925. Law, C. A., Craig, D. N., Hoffman, J. I., Hamer, W. J., J 64A5-63 381 (1960). Lawrence, C. D., Halstead, P. E., (1962) Paper III- Sll, Mono.43, Vol. 1, p. 321. Lawrence, R. S., Hallenbeck, M., (1965) TN315; 3595. Lawrence, R. S., Jespersen, J. L., 4271. Lawrence, R. S., Jespersen, J. L., Lamb, R. C, J 65D4-

137, 333 (1961); J 65D4-138, 351 (1961). Lawrence, R. S., Little, C. G., J 64D4-66, 335 (1960) ; 3678A; 3878. Lawrence, R. S., Little, C. G., Chivers, H. J. A., 5890. Lawrence, R. S., Merrill, R. G., Roper, N. J., 5720. Lawrence, R. S., Posakony, D. J., 3926. Lawrence, R. S., Posakony, D. J., Garriott, 0. K., Hall,

S. G, 5806. Lawrence, R. S., Warwick, J. W., 4382. Lawrence, T. R., 5443. Lawrence, T. R., Morokuma, T., Nefflen, K. F., Klucher,

T. M., 5418. Lawson, W. D., Cleek, G. W., Consitt, F. J. P., 8964. Laivton, R. A., Allrcd, C. M., 6305. Lax, B., Tiern, P. K., J 64D4, 755 (1960). Layzer, D., Menzel, D. H., J 69D1-442, 59 (1965). Lea, F. M., (1962), Paper 1-2, Mono.43, Vol. I, p. 5. Leadabrand, R. L., 3 69D7-529, 959 (1965). Leaderman, H., 4727; 5666; 6372. Leaderman, H., McCrackin, F. L., 5442. Leaderman, H., Overberg, R. J., J 65C1-51, 9 (1961). Leaderman, H., Schwarzl, F., 4247. Leavens, W. M., J 69D10-566, 1321 (1965); 8917;

9093. Lebo, G. R., Carr, T. D., Gulkis, S., Smith, A. G., May,

J., Kennedy, D. J., Bollhagen, H., J 69D12-584, 1530

(1965). Leder, L. B., Klein, R., 4088; 4339; 5133; 5357; 5358. Leder, L. B., Marion, L., Marton, C, Mendlowitz, H., Simpson, J. A., Suddeth, J. A., Wagner, M. D., 3459. Leder, L. B., Marton, L., Simpson, J. A., Suddeth, J. A., 5099. Leder, L. B., Suddeth, J. A., 3460. Lederer, P. S., (1962) TN150.

Lederer, P. S., Hilten, J. S., (1966) TN269.

Ledford, A. E., Jr., Abramowitz, S., Bass, A. M., 6605. Ledley, R. H., 3181; 3292; 3364. Ledley, R. S., 3152A; 3810A.

Ledley, R. S., Boyle, D. R., 4185. Ledley, R. S., Wilson, J. B., 3966. Lee, K. S. H.. Papas, C. H., J 69D10-565, 1313 (1965). Lee, L. H., Cutkosky, R. D., J 69C3-196, 173 (1965) ; 5259. Lee, P. K., Gingerick, K. A., Efiyncnko, J. E., 5843. Lee, R. D., 4927; 5026. Lee, R. D., Kostkowski, H. J., (1962) Mono.41; 5071. Lee, R. H., Boischot, A., Warwick, J. W., 3609. Lee, R. H., Warwick, J. W., J 68D7-377, 807 (1964). Lee, R. M., Loftus, T. P., J 66A2-145, 103 (1962).

Lee, R. M., Scharf, K., 4715.

Lee, T. G., 5326. Lee, T. G., Loftus, J. L., Gross, D., 6714; 9076. Lee, T. G., Robertson, A. F., 4052. Lee, W. C. Y., Peters, L., Jr., Walter, C. H., J 69D2-

457, 227 (1965); J 69D3-470, 349 (1965). Lee, W. M., Shereshefsky, J. L., Stromberg, R. R., J

65A1-82, 51 (1961).

Lee, W. M., Stromberg, R. R., Quasius, A. R., 3233. Lee, W. M., Stromberg, R. R., Quasius, A. R., Newman,

S. B., Reinhart, F. W'., 3151. Lee, W. M., Stromberg, R. R., Shereshefsky, J. L., J 66A5-178, 439 (1962).

Leftin, M., Jones, W. B., Graham, R., P., (1965) TN337. Lehman, S. Y., 4078. Lehmann, F. A., Brauer, G. M., 3974. 439
Lehmann, H., Dutz, H., (1962) Paper IV-S6, Mono.43,

Vol. I, p. 513. Lehner, J., Knopp, M. I., Newman, M., 6540. Lehner, J., Newman, M., 6532; 8981. Leighton, H. I., Shapley, A. H., Smith, E. K., 5030. Leinbach, H., Campbell, W. H., 4138. Leinbach, H., Little, C. G., Ortner, J., Brown, R. R., Hartz, T. R., Holt, 0., Hultqvist, B., 4955. Leinbach, H., Reid, G. C, Bailey, D. K., 6253. Leiner, A. L., 6583; 1159B; 1732A.

Leiner, A. L., Alexander, S. N., 1159A.

Leiner, A. L., Notz, W. A., Smith, J. L., Marimont, R.

B., 3164. Leiner, A. L., Notz, W. A., Smith, J. L., Weinberger, A., 1159AA.

Leiner, A. L., Weinberger, A., Loberman, H., Coleman,

C. D., 4402. Leiner, A. L., Youden, W. W., 3953.

Leiss, J. E., 5211; 5582; 6612.

Leiss, J. E., Broberg, J., Schrack, R. A., Wyckoff, J. M.,

6245.

Leiss, J. E., Penfold, A. S., 3137.

Leiss, J. E., Penner, S., 3281.

Leiss, J. E., Schrack, R. A., Penner, S., 3607; 4786. Lemmon, K. T., Chrzanowski, P., Greene, G., Young,

J. M., 4394. Lemmon, K. T., Chrzanowski, P., Young, J. M., Greene,

G., 4701. Lenhert, D. H., Erteza, A., Doran, J. A., J 69D2-468,

317 (1965).

Lerfald, G. M., Hargreaves, J. K., Watts, J. M., J 69D7-

527, 939 (1965).

Lerfald, G. M., Little, C. G., Parthasarathy, R., 4299;

4920; 5808; 6001. Lerfald, G. M., Parthasarathy, R., 6664. Lerfald, G. M., Parthasarathy, R., Little, C. G., J 68D8-

384, 859 (1964) ; 5279. Lerner, R. M., Max, J., J 69D2-464, 273 (1965).

Leslie, R. T., Kuehner, E. C, 4418; 4602; 5301; 5997. Lester, W. A , Krauss, M., 6100. Lessing, P., Catanzaro, E. J., 6389. Leussing, D. L., 5252. Leussing, D. L., Harris, J., Wood, P., 4991. Levelt-Sengers, J. M. H., Larsen, S. Y., 8911. Levin, B., Hedetnierni, S., 5288. Levin, B. M., Severo, N. C, 3978. Levin, B. M., Stark, M. C, Tosini, P. C, 3718; 4236. Levin, E. M., J 70A1-381, 5 (1966) ; J 70A1-382, 11 (1966) ; 6341; 9097. Levin, E. M., Mauer, F. A., 5400. Levin, E. M., McDaniel, C. L., J 69A3-342, 237 (1965)

;

5055. Levin, E. M., Robbins, C. R., J 65A2-95, 127 (1961). Levin, E. M., Robbins, C. R., Waring, J. L., 4114. Levin, E. M., Roth, R. S., J 68A2-268, 189 (1964) ; J 69A2-269, 197 (1964). Levin, E. M., Roth, R. S., Martin, J. B., 4234. Levin, E. M,, Roth, R. S., Waring, J. L., 6300. Levin, E. M., Robbins, C. R., McMurdie, H. F., 6282. Levin, I. W., Abramowitz, S., 6760. Levin, I. W., Comeford, J. J., Abramowitz, S., 6818. Levine, D. B., Jackson, J. L., Piccirelli, R. A., 4841. Levine, E. P., Reiser, H. S., 5738. Levine, E. P., Wachtman, J. B., Jr., Reiser, H. S., J

67A4-216, 281 (1963). Levine, H., 941A.

Levine, I., Daniel, E. D., 3500; 3539. Levinson, C. A., Banerjee, M. K., Meshkov, S., 5219. Lcvinson, C. A., Lipkin, H. V., Meshkov, S., 5351; 5537; 5834; 5896. Levinson, C. A., Meshkov, S., Lipkin, H. J., 5846. Levy, J. B., Friedman, R., 5411. Leyendecker, A. J., Kahn, A. H., 6032; 6033. L'Hermite, R. G., (1962) Paper V-3, Mono.43, Vol. II, p. 659. L'Hopitallier, P., (1962) Paper VIII-4, Mono.43, Vol.

II, p. 1007.

Lias, S. G., Ausloos, P. J., 4670; 5066; 5114; 5624; 6100; 6319; 6320; 6776.

Lias, S. G., Ausloos, P. J., Gorden, R., Jr., 5307; 6005;

6009.

Lias, S. G., Ausloos, P. J., Rebbert, R. E., 6696.

Lias, S. G., Ausloos, P. J., Sandoval, I. B., 5758; 6448.

Lias, S. G., Hughes, E. E., (1960) TN70 (PB161571)

;

3496.

Liboff, R. L., J 68D3-349, 325 (1964). Lichten, W., Fano, U., 6812.

Lide, D. R., Jr., 3260; 3506; 3647; 3693; 3798; 4453; 4772; 5122; 5485; 5486; 6211; 6527; 6781. Lide, D. R., Jr., Cahill, P., Gold, L. P., 6212. Lide, D. R., Jr., Christensen, D., 3971; 4182.

Lide, D. R., Jr., Comeford, J. J., Mann, D. E., Schoen,

L. J., 5409.

Lide, D. R., Jr., Forman, R. A., 5605.

Lide, D. R., Jr., Harmony, M. D., Myers, R. J., Schoen,

L. J., Mann, D. E., 4124.

Lide, D R., Jr., Jen, M., 5021; 5487; 6214.

Lide, D. R., Jr., Kirchhoff, W. H., 6869.

Lide, D. R., Jr., Kivelson, D., Wilson, E. B., Jr., 3648.

Lide, D. R., Jr., Lafferty, W. J., 6354.

Lide, D. R., Jr., Lafferty, W. J., Toth, R. A., 6799. Lide, D. R., Jr., Laurie, V. W., 3257.

Lide, D. R., Jr., Mann, D. E., 3259.

Lide, D. R., Jr., Mann, D. E., Comeford, J. J., 9102.

Lide, D. R., Mann, D. E., Thrush, B. A., Ball, J. J., Acquista, N., 4304.

Lide, D. R., Jr., Millen, D. J., Topping, G., 4769.

Lide, D. R., Jr., Nugent, L. J., Mann, D. E., 4771.

Lide, D. R., Jr., Powell, F. X., 6213; 6791.

Lide, D. R., Jr., Taft, R. W., Jr., Love, P., 3255. Lidiard, A. B., Boswarva, I. M., Howard, R. E., 4651. Lidiard, A. B., Howard, R. E., 6197; 9041; 9059; 9109. Liemohn, H. B., J 69D5-510, 741 (1965). Liepman, D. S., (1964) AMS55, p. 1. Lifson, S., Jackson, L. J., 1811. Lifson, S., Oppenheim, I., 3660. Light, J., Shuler, K. E., Carrington, T., 6891.

Likins, R. C, McCann, H. G., Posner, A. S., 3477.

Likins, R. C, Posner, A. S., Kunde, M. L., Craven, D.

L., 3161.

Likins, R. C, Posner, A. S., Paretzkin, B., Frost, A.

P., 4046.

Lilley, C. M., Johler, J. R., (1961) TN132 (PB161633) ; 4100.

Lilley, C. M., Johler, J. R., Walters, L. C, (1960) TN60

(PB161561).

Lillie, D. A., Barghausen, A. F., 9017A.

Lillie, D., Barghausen, A., Jacobs, G., 5385. Lincoln, J. V., 3557; 4099; 4671; 5377; 5660; 6103;

6460. Lincoln, J. V., Hakura, Y., 5168. Lincoln, J. V., Shapley, A. H., 4688; 4707; 5222; 5420;

5422; 6151. Lincoln, J. V., Warwick, C. S., 4273; 5635. Lincoln, J. V., Weldon, J. M., Shapley, A. H., 4229. Linder, I. W., J 65D3-126, 245 (1961). Lindsay, W. J., Heim, D. S., J 65D3-125, 237 (1961). Linebrink, 0. L., (1963) M248, p. 135. Linevsky, M. J., Mann, D. E., White, D., Seshadri, K.

S., Dever, D. F., 5763. Linevsky, M. J., Shull, E. R., Mann, D. E., Wartick, T., 893A.

Linevsky, M. J., Sommer, A., White, D., Mann, D. E., 5406. Linevsky, M. J., White, D., Mann. D. E., 6133.

Linfield, R. F., Doherty, R. H., Hefley, G., 4391.

Linfield, R. F., Hefley, G., Davis, T. L., J 65C1-53, 43

(1961).

Linfield, R. F., Hefley, G., Doherty, R. H., J 65D2-114,

157 (1961) ; 5089A.

Linfield, R. F., Sampson, C. A., 4612; 4909. Linnett, J. W., Kirchhoff, W. H., Farren, J., 6618. Living, F. J., 3996. Linnig, F. J., Mandel, J., 6537. 440
Linnig, F. J., Milliken, L. T., Parks, E. J., 4528. Lining, F. J., Parks, E. J., 5499. Linnig, F. J., Parks, E. J., Stewart, J. E., J 68A5-296,

499 (1964).

Linnig, F. J., Parks, E. J., Wall, L. A., J 65A1-88, 79 (1961). Linnig, F. J., Parks, E. J., Wood, L. A., 6052. Linnig, F. J., Stewart, J. E., 3564. Linnig, F. J., Tryon, M., Parks, E. J., 4188. Linzer, M., Radford, H. E., 5621. Lipkin, H. J., Carter, J. C, Coyyie, J. J., Meshkov, S., Horn, D., Kugler, M., 9053. Lipkin, H. J., Harari, H., Horn, D., Kugler, M., Meshkov, S., 6861. Lipkin, H. J., Harari, H., Meshkov, S., 6767. Lipkin, H. J., Horn, D., Kugler, M., Carter, J. C, Coyne,

J. J., 9142. Lipkin, H. J., Levinson, C. A., Meshkov, S., 5351; 5537;

5834; 5896. Lipkin, H. J., Meshkov, S., 9103; 9143. Lipkin, H. J., Meshkov, S., Levinson, C. A., 5846. Lippincott, E. R., Diorio, A. F., Mendelkern, L., 4539;

4848. Lippincott, E. R., Duecker, H. C, 6312. Lippincott, E. R., Margoshes, M., 5596. Lippincott, E. R., Posner, A. S., Stutman, J. M., 3571. Lippincott, E. R., Schroeder, R. A., Weir, C. E., J 66A5-

176, 407 (1962) ; 4728. Lippincott, E. R., Shorb, A. M., Schroeder, R., 5126A.

Lippincott, E. R., Weir, C. E., J 65A3-100, 173 (1961).

Lippincott, E. R., Weir, C. E., Van Valkenburg, A., 3582; 4821. Lippincott, E. R., Weir, C. E., Van Valkenburg, A., Bunting, E. N., 3799. Lippincott, E. R., Welsh, F. E., Weir, C. E., 4177. Lippincott, E. R., Whatley, L. S., Van Valkenburg, A., Weir, C. E., 6273.

Lisle, R. V., Zapf, T. L., 5248; 5959.

Litovitz, T. A., lilacedo, P. B., 8920.

Little, C. G., 4255; 4983; 5642; 6219.

Little, C. G., Chapman, S., 2374A.

Little, C. G., Garriott, 0. K., 3877.

Little, C. G., Herbstreit, J. W., Patterson, D. W'., 5781.

Little, C. G., Lawrence, R. S., J 64D4-66, 335 (1960); 3678A; 3878.

Little, C. G., Lawrence, R. S., Chivers, H. J. A., 5890.

Little, C. G., Lerfald, G. M., Parthasarathy, R., J 68D8-

384, 859 (1964) ; 4299; 4920; 5808; 6001.

Little, C. G., Ortner, J., Brown, R. R., Hartz, T. R., Holt, 0., Hultqvist, B., Leinbach, H., 4955.

Little, C. G., Parthasarathy, R., Lerfald, G. M., 5279.

Little, C. G., Reid, G. C, Stiltner, E. C, Merritt, R. P., 4484.

Little, C. G., Schiffmacher, E. R., Chivers, H. J. A., Sullivan, K. W., 6663.

Little, J. L., 5002.

Little, J. W., Klein, R., 5941.

Little, J. W., Madey, T. E., Klein, R., 9141.

Little, J. W., Thomas, A. M., Johnson, D. P., 4569.

Little, R. C, Carpenter, F. G., Deitz, V. R., 4677.

Little, W. E., 6094.

Little, W. E., Niesen, E., 5879.

Little, W. E., Wakefield, J. P., 5866. Lloyd, D. B., J 69B3-153, 189 (1965). Lloyd, E. C, Giardini, A., 5387; 6200. Lloyd, E. C, Johnson, D. P., 3792. Lloyd, E. C, Wilson, B. L., (1963) M248, p. 15. Lloyd, J. A., Reid, M. A., 5514; 5526. Lo, Y. T.,J 68D9-401, 1011 (1964). Loberman, H., Leiner, A. L., Weinberger, A., Coleman,

C. D., 4402. Locher, F. W., (1962) Paper II-S5, Mono.43, Vol. I, p. 99; (1962) Paper III-S4, Mono.43, Vol. I, p. 267. Loebenstein, W. V., J 66A6-186, 503 (1962) ; J 67A6-

248, 615 (1963) ; 3162; 3748. Loebenstein, W. V., Schwer, F. W., Barret, E. P., 3196. Lofgren, N. L., Walker, R. F., Efxmenko, J., 4261.

Lofquist, K., J 66C4-112, 363 (1962) ; 3544. Loftus, J. J., Gross, D., J 67C3-136, 251 (1963) ; 4237. Loftus, J. J., Gross, D., Robertson, A. F., 4237. Loftus, J. L., Lee, T. G., Gross, D., 6714; 9076. Loftus T. P., Aitken, J. H., DeLaVergne, R., Henry, W. H., 4538. Loftus, T. P., Lee, R. M., J 66A2-145, 103 (1962).

Loftus, T. P., Wyckoff, H. O., Allisy, A., Aston, G. H., Barnerd, G. P., Hubner, W'., Taupin, G., 5416. Logan, H. L., J 65C3-67, 165 (1961); J 66C4-110, 347

(1962) ; 3168; 3318; 4321; 4441; 6085; 9044. Logan, H. L., McBee, M. J., Kahan, D. J., 6746. Logan, H. L., McBee, M. J., Romanoff, M., 5705. Logan, H. L., Ugiansky, G. M., 9121. Lombardini, P. P., J 69D1-445, 83 (1965). Lombardini, P. P., Doviak, R., Goldhirsh, J., J 69D7-

533, 989 (1965). London, J., Haurwitz, M. W., 5552. Long, A. R., Thomas, J. O., J 67D1-245, 79 (1963). Longley, A. G., Rice, P. L., Norton, K. A., Barsis, A. P., (1965) TN101, Vols. 1 and 2. Longton, R., Caul, H. J., Sweeney, W. T., Paffenbarger,

G. C, 5312. Longuet, P., (1962) Paper II-S9, Mono.43, Vol. I, p. 131. Longuet-Higgins, M. S., J 68D9-406, 1049 (1964). Looney, C. H., Jr., J 68D1-315, 43 (1964). Lopez, J., Carpenter, F. G., Deitz, V. R., 3962. Lottridge, D. D., Joel, M. L., (1964) TN249.

Love, C, Cletus, C, J 69C2-192, 127 (1965). Love, P., Lide, D. R., Jr., Taft, R. W., Jr., 3255. Love, W. F., Arp., V. D., Kropschot, R. H., Wilson,

J. H., Phelna, R., 4331. Lowan, A. N., (1964) AMS55, p. 751. Lowey, H. B., Saylor, C. P.. J 69C3-198, 191 (1965). Lowrie, P. H., Jr., (1962) TN141; 4799; 6119. Lowry, R. E., Brown, D. W., Fearn, J. E., 8970. Lowry, R. E., Wall, L. A., Fearn, J. E., Pummer, W. J., J 65A3-107, 239 (1961). Lucas, D. L., Harper, J. D., Jr., (1965) TN318.

Lucas, G. L., Hubbard, D., 3590. Ludtke, P. R., 6338. Ludtke, P. R., Robbins, R. F., 6350. Ludtke, P. R., Weitzcl, D. H., 5363. Ludtke, P. R., Weitzel, D. H., Robbins, R. F., 5983. Ludwig, U., Schwiete, H. E., (1962) Paper VIII-6, Mono.43, Vol. II, p. 1093. Luke, Y. L., (1964) AMS55, p. 479. Lundin, S. T., (1965) M257, Paper 6, p. 93. Luness, J. N., Blatt, J. M., Larsen, S. Y., 5824. Lustig, E., 3938; 4892. Lutz, S. G., Hartman, W. J., (1963) TN180; 4493. Mc

McBee, M. J., Logan, H. L., Kahan, D. J., 6746. McBee, M. J., Logan, H. L., Romanoff, M., 5705. McCamy, C. S., (1964) H96; (1964) M259; 3120; 3380; 3935; 4001; 4460; 5025; 6140; 6639; 8915. McCamy, C. S., Pope, C. I., J 69A5-359, 385 (1965);

(1965) TN261; 3477; 4482; 6307. McCarty, R. D., Stewart, R. B., 9113. McCarty, R. D., Stewart, R. B., Timmerhaus, K. D., 5603. McCaulley, J. W., Matsushita, S., Roach, F. E., 3404. McCaulley, J. W., Roach, F. E., Marovich, E., Purdy,

C. M., 3374. McCleary, L. C, Peiser, H. S., Wachtman, J. B., Jr., Munley, F. A., J 69A5-368, 461 (1965). McClcndon, L. T., Landgrebe, A. R., DeVoe, J. R., 9050. McClintock, R. M., 3316; 4559. McClintock, R. M., Hall, J. L., Jennings, D. A., 5165. McClintock, R. M., Mikesell, R. P., 4425. McClintock, R. M., Van Gundy, D. A., Kropschot, R. H., 3244. McClintock, R. M., Warren, K. A., 4340. McCoskey, R. E., Furukawa, G. T., Reilly, M. L., 775A. McCrackin, F. L., J 66C4-107, 317 (1962). 441
McCrackin, F. L., Bersch, C. F., 3169. McCrackin, F. L., Colson, J. P., (1964) M256, p. 61; (1964) TN242.

McCrackin, F. L., DiMarzio, E. A., 6554. McCrackin, F. L., Leaderman, H., 5442. McCrackin, F. L., Mandel, J., J 67A3-214, 259 (1963). McCrackin, F. L., Passaglia, E., Stromberg, R. R., Steinberg, H. L., J 67A4-227, 363 (1963). McCrackin, F. L., Steel, M. N., Mandel, J., (1965) TN259.

McCulloh, K. E., 3665. McCulloh, K. E., Ferguson, R. E., Rosenstock, H. M.,

8905. McCulloh, K. E., Sharp, T. E., Rosenstock, H. M., 6698. McCurdy, K. G., Thorvaldson, T., Birss, F. W., (1962) Paper III-S10, Mono.43, Vol. I, p. 315. McDaniel, C. L., Levin, E. M., J 69A3-342, 237 (1965) ; 5055. McDermott, J. V., Saunders, J. B., J 68C2-153, 83

(1964). McDonald, E. J., J 69A3-349, 291 (1965); 3136; 3480; 3750; 4276; 5640. McDonald, E. J., Foley, B. Y., 3746. McDonald, N., Kneeht, R. W., 3389. McDonald, N. Warwick, C. S., Pohrte, T., 3399. McDonald, P. M., Pasternack, R. F. y 6548; 6684. McDowell, M. R. C, (1963) TN185.

McDuffie, R. E., Knecht, R. W., 4814; 4912. McDuffie, R. E., Wright, J. W., 3860. McEachran, R. P., Nicholls, R. W., Frazer, P. A., Jar- main, W. R., 3911. McFarland, R. L., J 69B4-161, 319 (1965). McFarlane, E. F., Deitz, V. R., 5365; 5754; 6121. McGandy, E. L., Kirkpatrick, H. B., Richmond, J. C,

2302A. McGavin, R. E., (1962) TN99.

McGavin, R. E., Barghausen, A. F., 3344. McGavin, R. E., Barghausen, A. F., Guiraud, F. 0., Murahata, S., Wilbcr, R. W., (1963) TN103. McGavin, R. E., Bean, B. R., 5807; 9109. McGavin, R. E., Gilmer, R. 0., Bean, B. R., J 69D9-554, 1213 (1965) ; 6475. McGavin, R. E., Vetter, M. J., 8973. Mchedlov-Petrosyan, 0. P., Babushkin, W. I., (1962) Paper IV-S9, Mono.43, Vol. I, p. 533. Mclnnes, B. A., Thomas, J. A., J 68D11-429, 1251

(1964). Mcintosh, G. E., Corruccini, R. J., Johnson, V. J., Scott, R. B., 3171A.

Mclntyre, D., J 68A1-256, 87 (1964) ; 4574. Mclntyre, D., Gornick, F., 6177. Mclntyre, D., Madorsky, S. L., O'Mara, J. H., Straus,

S., J 66A4-163, 307 (1962). Mclntyre, D., Morton, M., Milkovich, R., Bradley, J. L., 5390. Mclntyre, D., O'Mara, J. H., 3327. Mclntyre, D., O'Mara, J. H., Straus, S., J 68A2-263, 153

(1964). Mclntyre, D., Williams, L. C, Hexner, P. E., Kim,

H. G., Weber, F. N., Bunting, R. F., Kupke, D. W.,

4534. Mclntyre, D., Wims, A. M., Green, M. S., 4556. Mclntyre, D., Wims, A. M., Williams, L. C, Mandlekcrn,

L., 4544. Mclntyre, D. M., 2802A.

Mclntyre, D. M., O'Mara, J. H., Konouck, B. C, 3365. McKean, H. A., Mandel, J., Steel, M. N., 3396. McKinley, J. D., 5095; 6189; 6190; 6191; 6846; 9085. McKinley, J. D., Milligan, D. E., Jacox, M. E., 9026. McKinney, J. E., Belcher, H. V., J 67A1-194, 43 (1963). McKinney, J. E., Belcher, H. V., Marvin, R. S., 3827. McKinney, J. E., Bowyer, C. S., 3498. McKinney, J. E., Marvin, R. S., 9134. McLane, C. K., Takeda, S., Thompson, R. C, Thomas, W. E., Jr., 6728.

McLane, C. K., Tsukishima, T., J 69D3-475, 389 (1965). McLaughlin, W. L., (1962) TN161; 3636; 4871; 5562; McLaughlin, W. L., Chalkley, L., 6837; 3839; 6854. McLaughlin, W. L., Ehrlich, M., 4223. McLaughlin, W. L., Ehrlich, /I/., Zcitler, E., 6333. McLeod, G. L., J 66A1-141, 65 (1962). McLernon, F. D., Bay, Z., 3124; 6577. McLernon, F. D., Bay, Z., Newman, P. A., J 65C1-54,

51 (1961). McMurdie, H. F., (1964) TN251; (1965) TN260. McMuntie, H. F., Levin, E. M., Robbins, C. R., 6282. McNeill, F. A., Crombie, D. D., Allock, G. M., 5844. McNesby, J. R., 3599. McNesby, J. R., Becker, D. A., Okabe, H., 9127. McNesby, J. R., Currie, C. L., Okabe, H., 5840. McNesby, J. R., Hampson, R. F., Jr., 9128; 9129. McNesby, J. R., Hampson, R. F., Jr., Akimoto, H., Tanaka, I., 6204. McNesby, J. R., Jackson, W. M., 4225; 5078; 5534. McNesby, J. R., Jackson, W. M., Darwent, B. deB., 4881; 5076. McNesby, J. R., Laufer, A. H., 6691; 8940A. McNesby, J. R., Laufer, A. H., Pirog, J. A., 6717. McNesby, J. R., Okabe, H., 4403; 5110; 6524. McNesby, J. R., Pirog, J. A., 9130. McNesby, J. R., Scheer, M. D., Klein, R., 3597; 5108. McNesby, J. R., Tanaka, I., 4835. McNesby, J. R., Tanaka, I., Okabe, H., 5112. McNish, A. G., (1964) AMS55, p. 5; 3667; 3887A; 4127;

4136; 5043; 5048; 5368; 5691; 6174; 6856; 9083. McNish, A. G., Cameron, J. M., 3729. McNown, J. S., Keulegan, G. H., 3368A. McPherson, A. T., 1312A; 3465; 3603; 3716; 3870; 3913; 4003; 4192; 4212; 4287; 4311; 4380; 4728A; 4744;

5318; 5421; 5690; 5780; 5794; 5835; 6077; 6608. McPherson, A. T., Best, A. S., 6395. McPherson, A. C, Kerns, D. M., 16A. McQuate, P. L., Kirby, R. S., Dougherty, H. T., 1421A. M

Ma, M. T., J 69D9-560, 1249 (1965) ; 5909; 5924; 6599;

6603; 6643. Ma, M. T., Hyovalti, D. C, (1965) Mono.95. MaeAdam, D. L., Judd, D. B., Wyszecki, G., 6383. Macedo, P. B., Capps, W., Wachtman, J. B., Jr., 6016. Macedo, P. B., Litovitz, T. A., 8920. Macedo, P. B., Napolitano, A., Hawkins, E. G., J 69A5-

366, 449 (1965) ; 9132. MacDonald, N., Knecht, R. W., 3389; 3948.

MacGillairi,, C. H.. Ondik, H. M., Block, S., 4378. MacGregor, J., Brown, W. E., 6613. Machlan, L. A., Hague, J. L., J 65A1-87, 75 (1961) ; J 66A6-187, 517 (1962). Macinko, J., Mann, D. B., Bjorklund, W. R., Hiza, M. J., 3494. Macinko, J., Miller, C. E., Jacobs, R. B., 5413. Mackay,D.R., (1963) TN195; (1963) TN196.

Macurdy, L. B., J 68C3-158, 135 (1964) ; 4985. Macurdy, L. £?., Aimer, H. E., Bowman, H. A., Jensen, M. W., Reiser, H. S., Wasko, B., J 68C3-159, 141

(1964). Macurdy, L. /?., Aimer, H. E., Peiser, H. S., Week, E. A., J 66C1-85, 33 (1962). Macurdy, L. B., Bowman, H. A., J 64C4-46, 277 (1960). Madden, R. P., Canfield, L. R., Haas, G., 5542. Madden, R. P., Codling, K., 5210; 5502; 6272; 6339; 6631; 6887; 9123. Madden, R. P., Johnston, R. G., 8921. Madden, R. P., Rabinovitch, K., Canfield, L. R., 6550. Madcy, T. E., Fine, J., Sheer, M. D., 9069. Madcy, T. E., Little, J. W., Klein, R., 9141. Madcy, T. E., Yates, J. T., Jr., 6821. Madcy, T. E., Yates, J. T., Jr., Stern, R. C, 6820. Madorsky, S. L., 4388; 4389; 4879; 5097; 6501. 442
Madorsky, S. L., Straus,, S., J 64A6-73, 513 (1960);

J 65A3-108, 243 (1961) ; J 66A5-175, 401 (1962)

;

4037. Madorsky, S. L., Straus, S., Mclntyre, D., O'Mara,

J. H., J 66A4-163, 307 (1962). Macda, H., Matsushita, S., Shirgaokar, M., Yashuhara,

M., 6252. Magnus, W., Fox, D., J 67D2-255, 189 (1963). Magruder, J. 0., Corliss, E. L. R., Smith, E. L., 3227A;

4104. Mahler, R. J., 8939. Mahler, R. J., Denison, A. B., James, L. W., Currin,

J. D., Tanttila, W. H., 6517. Mahler, R. J., Tanttila, W. H., 9124. Maienthal, E. J., 5287. Maienthal, E. J., Taylor, J. K., 6362; 6687. Maienthal, E. J., Taylor, J. K., Marinenko, G., 6723. Majumdar, A. J., Smith, D. K., Ordway, F., 4268; 6673. Maki, A. G., 4123; 5075; 5854. Maki, A. G., Blaine, L. R., 6130. Maki, A. G., Decius, J. C., 3368. Maki, A. G., Gott, T., 5123. Maki, A. G., Lafferty, W. J., 6483. Maki, A. G., Lafferty, W. J., Plyler, E. K., 6113. Maki, A. G., Plyler, E. K., J 66C3-104, 283 (1962);

4663. Maki, A. G., Plyler, E. K., Thibault, R. J., J 67A3-207, 219 (1963) ; 4696; 6529. Maki, A. G., Plyler, E. K., Tidwell, E. D., J 66A2-147,

163 (1962); J 68A1-255, 79 (1964). Maki, A. G., Thibault, R. J., Plyler, E. K., 5216. Maki, A. G., Toth, R. A., 6801. Maki, A. G., West, R., 5776. Maley, S. W., Bahar, E., J 68D1-314, 35 (1964). Maley, S. W., King, R. J., J 65D2-118, 183 (1961) ; J 66D2-185, 175 (1962); J 68D2-328, 157 (1964);

J 68D3-345, 297 (1964); J 69D10-571, 1383 (1965). Maley, S. W., Ottesen, H., J 68D8-390, 915 (1964). Malitson, H. H., Purcell, J. P., Tousey, R., Moore, C. E., Malitson', I. H., 4890; 5160; 6340. Malitson, I. H., Cleek, G. W., Stavroudis, 0. N., Sutton,

L. E., 5408. Malmberg, C. G., J 69A1-326, 39 (1965). Malmberg, M. S., Hamer, W. J., Rubin, B., 9110. Maloney, L. J., Dougherty, H. T., J 68D2-338, 239

(1964). Maloney, L. J., Kirby, R. S., Rice, P. L., (1961) TN95

(PB161596).

Malquori, G., (1962) Paper VIII-3, Mono.43, Vol. II, p. 983. Mancewicz, S. A., Hoerman, K. C., 5947; 6076. Mancewicz, S. A., Hoerman, K. C., Forziati, A. F., 4916. Mandel, J., 3330; 3338; 3429; 4194; 4704; 6051; 6480. Mandel, J., Brown, J. E., Tryon, M., 5286. Mandel, J., Capott, R. J., Newman, S. B., 3277. Mandel, J., George, D. A., Butzlaff, H. R., 4341. Mandel, J., Horowitz, E., 5282. Mandel, J., Horowitz, E., Capott, R. J., Boone, T. H., 4072. Mandel, J., Kanagy, J. R., 9002. Mandel, J., Lashof, T. W., 3336; 3630. Mandel, J., Linnig, F. J., 6537. Mandel, J., Mann, C. W., Randall, E. B., Jr., Kilduff,

T. J., Charles, A. M., 342A. Mandel, J., McCrackin, F. L., J 67A3-214, 259 (1963). Mandel, J., McKean, H. A., Steel, M. N., 3396. Mandel, J., Randall, E. B., Jr., 4443. Mandel, J., Richey, G. G., Stiehler, R. D., 3131. Mandel, J., Roth, F. L., Steel, M. N., Stiehler, R. D., 3249. Mandel, J., Steel, M. N., McCrackin, F. L., (1965) TN259.

Mandel, J., Stiehler, R. D., 446A. Mandel, J., Stiehler, R. D., Steel, N., Richey, G. G., Hobbs, R. H., 3283. Mandel, J., Thaxter, R. T., Hubbe, P. D., 5243.

Mandel, J., Wilson, W. K., 3497; 4032. Mandelkern, L., 3825. Mandelkern, L., Canty, G., Diorio, A. F., 5773. Mandel'kern, L., Cussed, J. M., Roberts, D. E., 5016. Mandelkern, L., Diorio, A. F., Lippincott, E. R., 4539;

4848. Mandelkern, L., Gornick, F., 4616. Mandelkern, L., Gornick, F., Diorio, A. F., Roberts, A. E., 6054. Mandelkern, L., Halpin, J. C, 6376. Mandelkern, L., Halpin, J. C, Diorio, A. F., Posner, A. S., 4588; 4759. Mandelkern, L., Martin, G. M., 5309; 5747. Mandelkern, L., Mclntyre, D., Wims, A. M., Williams,

L. C, 4544. Mandelkern, L., Meyer, W. T., Diorio, A. F., 4615. Mandelkern, L., Posner, A. S., Diorio, A. F., Roberts, D. E., 4153. Mandelkern, L., Posner, A. S., Worthington, C. R., Diorio, A. F., 3606. Mandelkern, L., Quinn, F. A., Jr., 983A. Mandelkern, L., Roberts, D. E., 3848; 4349. Mandelkern, L., Roberts, D. E., Diorio, A. F., Posner,

A. S., 3183. Mandelkern, L., Roberts, D. E., Halpin, J. C, Price, F. P., 3553. Mandics, P., Beckmann, P., J 68D12-430, 1265 (1964); J 69D4-497, 623 (1965). Mangum, B. W., Eisenstein, J. C, Hudson, R. P., 5877;

6185; 6838. Mangimi, B. W., Hudson, R. P., 4932; 5208. Mann, C. W., Randall, E. B., Jr., Mandel, J., Kilduff,

T. J., Charles, A. M., 342A. Mann, D. B., (1962) TN154; (1962) TN154A; 5180. Mann. D. B., Birmingham, B. W., Chelton, D. B., Hernandez, H. P., 3170. Mann, D. B., Bjorklund, W. R., Macinko, J., Hiza, M. J., 3494. Mann, D. B., Chelton, D. B., Birmingham, B. W., 3425A. Mann, D. B., Dean, J. W., (1965) TN227. Mann, D. B., Sixsmith, H., Wilson, W. A., Birmingham,

B. W., 5161. Mann, D. B., Stewart, R. B., 3356. Mann, D. B., Strobridge, T. R., 6216; 6558. Mann, D. E., 3355; 3768. Mann, D. E., Ames, L. L., White, D., 5407. Mann, D. E., Bass, A. M., 4468. Mann, D. E., Comeford, J. J., 6761. Mann, D. E., Comeford, J. J., Schoen, L. J., hide, D. R.,

Jr., 5409. Mann, D. E., Harmony, M. D., Myers, R. J., Schoen,

L. J., hide, D. R., Jr., 4124. Mann, D. E., hide, D. R., Jr., 3259. Mann, D. E., hide, D. R., Jr., Comeford, J. J., 9102. Mann, D. E., Linevsky, M. J., Shall, E. R., Wartick, T., 893A. Mann, D. E., Linevsky, M. J., White, D., 6133. Mann, D. E., Milligan, D. E., Comeford, J. J., Jacox, M. E., 6802. Mann, D. E., Milligan, D. E., Jacox, M. E., 6134. Mann, D. E., Milligan, D. E., Jacox, M. E., Bass, A. M., Comeford, J. J., 6852. Mann, D. E., Nugent, L. J., Lode, D. R., Jr., 4771. Mann, D. E., Porter, T. L., Acquista, N., 6735. Mann, D. E., Schoen, L. J., 6071. Mann, D. E., Schoen, L. J., Knobler, C, White, D., 4902. Mann, D. E., Sommer, A., White, D., Linevsky, M. J., 5406. Mann, D. E., Thrush, B. A., 3678. Mann, D. E., Thrush, B. A., hide, D. R., Ball, J. J., Acquista, N., 4304. Mann, D. E., White, D., Seshadri, K. S., Dever, D. F., Linevsky, M. J., 5763. Mann, D. E., White, D., Walsh, P. N., Sommer, A., 3579; 3580. Mann, W. B., 3745; 3754; 6464. 443
Mann, W. B., Garfinkel, S. B., Medlock, R., W., Yura,

O., 9061. Mann., W. B., Garfinkel, S. B., Youden, W. J., J 70C2-

219, 53 (1966). Mann, W. B., Hughes, E. E., 6450. Mann, W. B., Marlow, W. F., Hughes, E. E., 4103; 4355. Mann, W. B., Medlock, R. W., Yura, O., 5884. Mann, W. B., Perry, W. E., 3584A. Mann, W. B., Seliger, H. H., 3738. Mann, W. B., Seliger, H. H., Marlow, W. F., Medlock,

R. W., 3743. Manning, J. R., 4037; 4551; 4609; 4720; 5978; 6661;

6709. Manning, J. R., Howard, R. E., 5073. Manning, L. A., J 68D10-407, 1067 (1964) ; J 68D10-408,

1079 (1964). Manning, R., Newkirk, G. A., Curtis, G. W., Watson,

D. R., Shelby, J., 3335A.

Mansfield, W. V., Merrill, R. G., (1962) Mono.38. Mante, A. J. H., Thurber, W. R., 9106. Mantek, P. A., Geller, S. B., J 66C1-86, 45 (1962) ; 4395;

5155. Mantek, P. A., Geller, S. B., Boyle, D. R., 3929. Manuele, R. J., Schiverdtfeger, W. J., J 65C3-68, 171 (1961) ; 5237. Marantz, S., Armstrong, G. T., 3835; 5382. Marantz, S., Armstrong, G. T., Coyle, C. F., 3228. Marantz, S., Armstrong, G. T., Fano, L., Jessup, R. S., Mears, T. W., Walker, J. A., 4785. Marcinkowski, C. J., Felsen, L. B., J 66D6-229, 699

(1962) ; J 66D6-230, 707 (1962). Marcus, M., J 65B2-49, 113 (1961) ; J 65B2-51, 129 (1961); J 65B3-58, 205 (1961); 5017. Marcus, M., Davis, P. J., Haynsivorth, E., J 65B1-42,

13 (1961). Marcus, M., Kahn, N., 3936. Marcus, M., Mine, H., 4208; 5012; 5036. Marcus, M., Norman, M., 4369; 6773. Harden, E. C., Roller, H. R., 6309. Marden, E. C., Roller, H. R., Pfeffer, H., 3227. Marden, E, C., Taback, L., Mason, H. L., Pipberger, H. V., 3182. Marden, E. C., (1965) TN264.

Marden, E. C, Anderson, R., Marron, B., (1966) TN285.

Marden, E. C., Roller, H. R., (1961) TN85 (PB161586).

Margoshes, M., 3776; 4486; 4632. Margoshes, M., Lippincott, E. R., 5596. Margoshes, M., Scribner, B. F., J 67A6-240, 561 (1963) ; 4644; 6037; 6734; 9007. Margoshes, M., Thiers, R. E., Vallee, B. L., 3300. Margrave, J. L., Poland, D. E., Green, J. W'., (1961) Mono.30. Marimont, R. B., 3434. Marimont, R, B., Leincr, A. L., Notz, W. A., Smith, J. L., 3164. Marinenko, G., Taylor, J. R., J 67A1-192, 31 (1963); J 67A5-234, 453 (1963) ; J 70C1-214, 1 (1966) ; 6778. Marinenko, G., Taylor, J. R., Maienthal, E. J., 6723. Marini, J. W., J 64D5-91, 525 (1960) ; J 67D6-300, 707

(1963) . Mark, H., Swindells, J. F., Ullman, R., 3178. Markunas, P. C., Riddick, J. A., Fritz, J. S., Davis, M. M., Hillenbrand, E. F., Jr., 604A. Marlow, W. F., Mann, W. B., Hughes, E. E., 4103; 4355. Marlow, W. F., Mann, W. B., Seliger, H. H., Medlock,

R. W., 3743. Maron, M. E., (1965) M269, p. 9. Marovich, E., Droppleman, L. R., Davies, R., Cruz, J. E., Megill, L. R., Rees, M. H., Reisbeck, L., Roach,

F. E., (1965) TN308.

Marovich, E., Roach, F. E., 5302. Marovich, E., Roach, F. E., McCaulley, J. W., Purdy,

C. M., 3374. Marron, B., Anderson, R., Marden, E., (1966) TN285.

Marsden, C. P., (1963) TN186; (1965) TN265; 3157; 4040; 4064.

Marsden, C. P., Reery, W. J., Moffitt, J. R., (1961) H70;

4629. Marsden, C. P., Moffitt, J. R., (1963) H68. Marshak, H., Ambler, E., Fuller, E. G., 6699. Marshak, H., Tamura, T., Wagner, R., Miller, P. D., 6807. Marshak, H., Wagner, R., Miller, P. P., Temura, T., 6453. Marth, P. C, Rrewson, C. F., Wood, J. W., Wolfe, W. C,

Mitchel, J. W., 3325. Martin, C. S., Eisenhart, C, Deming, L. S., (1963) TN191.

Martin, G. M., Mandelkern, L., 5309; 5747. Martin, G. M., Passaglia, E., J 68A3-273, 273 (1964) ; J 68A5-298, 519 (1964); J 70A3-397, 221 (1966). Martin, G. M., Wood, L. A., J 68A3-271, 259 (1964). Martin, J. B., Cooper, J. W., 5264. Martin, J. B., Levin, E. M., Roth, R. S., 4234. Martin, J. B., Weiss, A. W., 5220; 5360. Martin, R. B., Jacobs, R. B., 3457A.

Martin, R. B., Jacobs, R. B., Hardy, R. J., 3186A.

Martin, R. B., Wilson, W. A., Brennan, J. A., Birming- ham, B. W., 3536. Martin, R. G., 6128. Martin, R. G., Campbell, P. G., Wright, J. R., 6645. Martin, W. C, 3144; 3663; 5452. Martin, W. C, Boyne, H. S., 4645. Martin, W. C, Corliss, C. H., J 64A6-68, 443 (1960). Martin, W. C, Tech, J. L., 4067. Marton, C, Marton, L., 5496; 5928; 6267; 6752; 6784. Marton, C, Marton, L., Leder, L. B., Mendlowitz, H., Simpson, J. A., Suddeth, J. A., Wagner, M. D., 3459. Marton, L., 3266A; 4060. Marton, L., Fowler, F. A., 9140. Marton, L., Fowler, H. A., Simpson, J. A., Suddeth,

J. A., 4061. . Marton, L., Horl, E., 4059. Marton, L., Leder, L. B., Marton, C, Mendlowitz, H., Simpson, J. A., Suddeth, J. A., Wagner, M. D., 3459. Marton, L., Marton, C, 5946. Marton, L., Mielczarek, S. R., Schubert, D. C, 3431; 3933 • 5088 Marton, L, Schubert, D. C, Mielczarek, S. R., (1963) Mono.66. Marton, L., Simpson, J. A., 4115. Marton, L., Simpson, J. A., Fowler, H. A., Swanson,

N., 4844. Marton, L., Simpson, J. A., Suddeth, J. A., Leder, L. B., 5099. Marton, T. W., (1964) M258.

Marton, T. W., Rlein, R., (1960) TN75 (PB161576) ; (1963) TN234.

Martz, L., 4409. Marvin, R. S., J 66A4-170, 349 (1962); 3844; 4421;

5009; 5399. Marvin, R. S., McRinney, J. E., 9134. Marvin, R. S., McRinney, J. E., Belcher, H. V., 3827. Marvin, R. S., Oser, H., J 67B2-96, 87 (1963) ; J 66B4-

85, 171 (1962). Maryott, A. A., Birnbaum, G., 3644; 3670; 4525; 4526;

6227. Maryott, A. A., Estin, A. J., Birnbaum, G., 3669. Maryott, A. A., Rryder, S. J., 3266; 5952; 6695. Marzetta, L. A., (1965) TN280; 4399. Marzetta, L. A., Cook, H. D., J 65C2-64, 129 (1961). Marzetta, L. A., Flach, D., 6623. Marzullo, S., Bunting, E. N., 3771. Marzullo, S., Wachtman, J. B., Jr., Wheat, M. L., J 67A2-205, 193 (1963). Masi, J. F., 727A.

Masi, J. F., Tsai, D. H., 4860. Masi, J. R., Hilsenrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Hoge, H. J., Nuttall, R. L., Touloukian, Y. S., Woolley, H. W., 3806. Mason, H. L., J 65C2-60, 97 (1961) ; 3942; 4016; 4183; 4385; 5858A; 5915; 6536; 9039; 9077. 4U
Mason, H. L., Pipbergcr, H. V., Fries, E. D., Taback,

L., 3722. Mason, H. L., Taback, L., Harden, E. C, Pipbergcr, H. V., 3182. Hason, H. L., Wildhack, W. A., Powell, R. C, (1965) TN262.

Hason, H. A., Hoove, D. G., 745A. Mason, W. C, Fricker, S. J., Ingalls, R. P., Stone, H. L., Swift, D. W., J 64D5-81, 455 (1960). Mathews, D. A., (1964) TN237, p. 1. Hatheivs, J. C, Abramoivitz, H., Call, D. H., 954A. Mathey, R. G., Bryson, J. O., 4959. Hathey, R. G., Watstcin, D., 3371; 3511; 4137; 5654. Haton, G. L., Lashof, T. W., Spring, C. P., 3195. Matsushita, S., J 68D5-362, 574 (1964); J 69D8-546,

1149 (1965) ; 3219; 3270; 3758; 3800; 4120; 4710A;

4737; 4801; 5337; 5429; 6163. Matsushita, S., Campbell, W. H., 4504. Matsushita, S., Maeda, H., Shirgaokar, H., Yashuhura,

H., 6252. Matsushita, S., HcCaulley, J. W., Roach, F. E., 3404. Matsushita, S., Smith, E. K., 4710A, 4718. Mauer, F. A., 3611. Mauer, F. A., Bolz, L. H., J 65C4-75, 225 (1961) ; 4753;

4859; 5468. Mauer, F. A., Bolz, L. H., Peiser, H. S., 3208. Mauer, F. A., Foner, S. N., Bolz, L. H., 3141. Mauer, F. A., Hall, L. H., Perloff, A., Block, S., 6669. Hauer, F. A., Keffer, C. J., Reeves, R. B., Robinson,

D. W., 8946. Mauer, F. A., Levin, E. M., 5400. Hax, J., Lerner, R. H., J 69D2-464, 273 (1965). Haximon, L. C, Danos, H., 6877. Maximon, L. C, Isabelle, D. B., 5937; 6327; 6328. Haximon, L. C, Olsen, H., 4752; 4825; 6295. Haximon, L. C, Schrack, R. A., J 70B1-170, 85 (1966). Haxwell, E. L., Watt, A. D., J 64D4-69, 357 (1960). Haxwell, L. H., Wachtman, J. B., 3317. Hay, J., Carr, T. D., Gulkis, S., Smith, A. G., Lebo,

G. R., Kennedy, D. J., Bollhagen, H., J 69D12-584,

1530 (1965). Hayo-Wells, J. F., 5928. Hazur, J., J 69A4-355, 355 (1935); 5679; 5925; 6402;

8916. Hazur, J., Joseph, L., 5695. Hazur, J., Sieglaff, C. L., 4631. Head, D. J., Scheiber, D. J., 4613. Heador, S. E., Stern, K. H., J 69A6-379, 553 (1965). Heaney, F. H., Bean, B. R., 1491A. Hears, T. W., Armstrong , G. T., Fano, L., Jessup, R. S., Harantz, S., Walker, J. A., 4785. Hears, T. W., David, R. H., Hoivard, F. L., 3879. Hears, T. W., Hague, J. L., Hichaelis, R. E., (1965) M260-4. Hears, T. W., Stanley, C. L., Compere, E. L., Jr., Howard, F. L., J 67A5-236, 475 (1963). Hedlock, R. W., Garfinkel, S. B., Hann, W. B., Yura, 0., 9061. Hedlock, R. W., Hann, W. B., Seliger, H. H., Harlow, W. F., 3743. Hedlock, R. W., Hann, W. B., Yura, 0., 5884. Heggers, W. F., 5648. Heggers, W. F., Catalan, H. A., Garcia-Riquelme, 0., J 68A1-252, 9 (1964). Heggers, W. F., Corliss, C. H., J 70A1-386, 63 (1966). Heggers, W. F., Corliss, C. H., Scribner, B. F., (1961) Mono. 32, Pts. I and II; 3752; 4274. Heggers, W. F., Stanley, R. W., J 69A2-332, 109 (1965). Meggers, W. F., Tech, J. L., 3818.

Hegill, L. R., J 69D1-444, 77 (1965) ; J 69D3-472, 367

(1965) ; 3712.

Hegill, L. R., Cahn, J. H., 6430. Hegill, L. R., Carleton, N. P., 4626; 6060. Hegill, L. R., Droppleman, L. K., 4953.

Hegill, L. R., Droppleman, L. K., Calfee, R. F., (1963) TN178.

Hegill, L. R., Jamnick, P. H., 3954; 4338.

Hegill, L. R., Jamnick, P. H., Cruz, J. E., 3759.

Hegill, L. R., Harovich, E., Droppleman, L. K., Davies,

R., Cruz, J. E., Rees, H. H., Reisbeck, L., Roach,

F. E., (1965) TN308.

Hegill, L. R., Purdy, C. H., Roach, F. E., J 65C4-73, 213

(1961).

Hegill, L. R., Rees, H. H., Droppleman, L. K., 5317.

Hegill, L. R., Rishbeth, H., 9075.

Hegill, L. R., Roach, F. E., (1961) TN106 (PB161-

607) ; 3582A; 4126.

Hegill, L. R., Schiff, H. I., 6451. Hegill, L. R., Shafer, A. B., Droppleman, L. K., 6276. Heijer, P. H. E., J 68A1-259, 113 (1964) ; 4144. Heijer, P. H. E., Herzfeld, C. H., 4101. Meinke, W. W., 8976; 9090. Hcinke, W. W., DeVoe, J. R., 5665. Heinke, W. W., Devoe, J. R., Nass, H. W., 4257. Heinke, W. W., Ruch, R. R., DeVoe, J. R., 4258. Heissner,P., (1960) TN64 (PB161565).

Heissner, P., Cunningham, J. A., Kettering, C. A., 3376A. Helmed, A. J., 6806. Helton, B. S., Johnson, D. P., 4693. Helton, C. H., Bloss, R. L., 6763. Henard, J. P., Reinboldt, W. C, 3635. Hendelssohm, K., Shiffman, C. A., 3876. Mendlowitz, H., 3697; 3700; 5828. Hendlowitz, H., Lavilla, R. E., 4817; 6268; 8925. Hendlowitz, H., Harton, L., Leder, L. B., Harton, C,

Simpson, J. A., Suddeth, J. A., Wagner, H. D., 3459. Hendlowitz, H., Simpson, J. A., 4813. Henis, 0., (1965) TN275.

Hentzoni, H. H., J 69D2-455, 213 (1965). Henzel, D. H., J 69D1-438, 1 (1965). Henzel, D. H., Layzer, D., J 69D1-442, 59 (1965). Henzel, D. H., Smith, E. K., Jr., (1964) TN211, Vols.

1-6. Herrill, R. G., 3701.

Herrill, R. G., Bailey, D. K., Cottony, H. V., Kirby,

R. C, Norton, K. A., Slutz, R. J., Davis, R. H.,

3737.

Herrill, R. G., Lawrence, R. S., Roper, N. J., 5720.

Herrill, R. G., Hansfield, W. V., (1962) Mono.38.

Herritt, R. P., Little, C. G., Reid, G. C, Stiltner, E. C,

4484. Hertz, D. B., Park, T., Youden, W. J., 6874. Heshkov, S., 5961. Heshkov, S., Banerjee, H. K., Levinson, C. A., 5219. Heshkov, S., Carter, J. C, Coyne, J. J., 9052. Heshkov, S., Carter, J. C, Coyne, J. J., Horn, D., Kugler, H., Lipkin, H. J., 9053. Heshkov, S., DeSouza, P. D., Snow, G. A., 6415. Heshkov, S., Harari, H., Horn, D., Kugler, H., Lipkin,

Heshkov','S., Harari, H., Lipkin, H. J., 6767. Heshkov, S., Levinson, C. A., Lipkin, H. V., 5351; 5834; 5846; 5896. Heshkov, S., Lipkin, H. J., 9103; 9143. Heshkov, S., Lipkin, H. J., Levinson, G. A., 5537. Heshkov, S., Snow, G. A., Yodh, G. B., 5960; 6519. Hessina, C. G., Hilsenrath, J., Ziegler, G. G., Walsh,

P. J., Herbold, R. J., (1966) H101.

Hetcalf, F. T., Diaz, J. B., Goldman, A. J., J 68B4-127, 147 (1964). Hetzger, W. H., Jr., 4523; 4548. Hetzger, W. H., Jr., Krasley, P. A., Ogburn, F., 3898. Hetzger, W. H., Jr., Sherfey, J. H., 6019. Heyer, L. F., 6873. Heyer, 0. L., Harman, G. G. Higier, T., 4917. Heyer, O. L., Harman, G. G., Raybold, R. L., 5296. Heyer, W. T., Handelkern, L., Diorio, A. F., 4615. Heyer-Arendt, J. R., 6092; 6269; 8924; 8953. Heyer-Arendt, J. R., Emmanuel, C. B., (1965) TN225.

Heyer-Arendt, J. R., Herrick, R. B., Emmanuel, C. B., 5285. Heyer-Arendt, J. R., Shettle, E. P., 6624. 445
Meyers, P. R., J 69B3-151, 179 (1965). Meyerson, M. R., 4148; 5503; 9098. Meyerson, M. R., Carwiie, N. L., Rosenberg, S. J., 3976. Meyerson, M. R., Ney, W. R., Young, T. R., 4348. Meyerson, M. R., Rosenberg, S. J., 4024. Meyerson, M. R., Young, T. R., Ney, W. R., J 64C3-38, 175 (1960). Mezger, P. G., J 69D12-604, 1612 (1965).

Miehaclis, R. E., 3786; 4303; 5638; 5639; 5715; 6409. Michaelis, R. E., Alvarez, R., Kilday, B. A., J 65C1-57,

71 (1961).

Miehaclis, R. E,, Hague, J. L., Mears, T. W., (1965) M260-4.

Miehaclis, R. E., Kilday, B. A., 4573; 4961. Michaelis, R. E., Wyman, L. L., (1964) M260-1.

Miehaclis, R. E., Wyman, L. L., Flitsch, R., (1964) M260-2.

Michaelis, R. E., Yakowitz, H., Moore, G. A., J 68A4-

282, 343 (1964); (1964) M260-3.

Michaelis, R. E., Yakowitz, H., Vieth, D. L., Heinrich, K. F. J., (1965) M260-10.

Michaels, E. L., Schiveppe, J. L., Eichberger, L. C,

Muster, D. F., Paskusz, G. F., (1963) Mono.67.

Middlcton, H. K., (1960) M231; (1961) M238; (1962) M245; (1963) M249; (1964) M261; (1965) M270.

Midgley, H. G., (1962) Paper IV-S2, Mono.43, Vol. I, p. 479. Midgley, H. G., Rosaman, D., (1962) Paper III-S2, Mono.43, Vol. 1, p. 259. Midgley, H. G., Rosaman, D., Fletcher, K. E., (1962) Paper II-S2, Mono.43, Vol. 1, p. 69. Mielczarek, E. V., Frederikse, H. P. R., 3354. Mielczarek, S. R., Kuyatt, C. E., Simpson, J. A., 6042;

6721. Mielczarek, S. R., Marton, L., Schubert, D. C., (1963) Mono.66; 3933; 5088. Mielczarek, S. R., Schubert, D. C., Marton, L., 3431. Mielczarek, S. R., Si7npson, J. A., 5284. Mielczarek, S. R., Simpson, J. A., Chamberlain, G. E., 6748. Mielczarek, S. R., Simpson, J. A., Cooper, J., 6239. Mielczarek, S. R., Simpson, J. A., Kuyatt, C. E., 5330. Mielenz, K. D., J 64A6-70, 487 (1960); J 68C2-152,

73 (1964); J 68C4-163, 195 (1964); J 68C4-164, 201 (1964) ; J 68C4-165, 205 (1964) ; 3766; 6229. Mielenz, K. D., Cook, H. D., Gillilland, K. E., Stephens, R. B., 5902. Mielenz, K. D., Nefflen, K. F., 6769. Mielenz, K. D., Stephens, R. B., J 68C1-147, 1 (1964). Micntka, W. E., Wait, J. R., 3155. Mies, F. H., 6125; 6665. Mies, F. H., Krauss, M., 6808. Mies, F. H., Shuler, K. E., 4869. Mikesell, R. P., McClintock, R. M., 4425.

Mikescll, R. P., Reed, R. P., 6590.

Mikesell, R. P., Reed, R. P., Greeson, R. L., 3775. Mikhailov, V. V., (1962) Paper VIIM, Mono.43, Vol. II, p. 927. Miles, F. H., 6010. Milford, S. N., 3436. Milkovich, R., Morton, M., Mclntyre, D., Bradley, J. L., 5390.

Millen, D. J., Topping, G., hide, D. R., Jr., 4769.

Miller, C. E., Dean, J. W., Flynn, T. M., 6644.

Miller, C. E., Jacobs, R. B., Macinko, J., 5413.

Miller, C. K. S., Daywitt, W. C, Campbell, E., 5897;

6530.

Miller, C. K. S., Wells, J. S., Daywitt. W. C, 6198.

Miller, J. C. P., (1964) AMS55, p. 685. Miller, P. P., Marshak, H., Wagner, R., Temura, T., 6453.

Miller, P. D., Wagner, R., Tamura, T., Marshak, H., 6807.

Miller, W. A. C, Jr., Hansen, W. C, Dickson, G., Sweeney, W. T., 3713; 3730.

Millhiser, D. R., Arnett, R. W., 6572.

Millhiser, D. R., Arnett, R. W., Probert, W. H., 5346.

Milligan, D. E., Jacox, M. E., 6131; 6135; 6136; 6183;

6184; 6849; 6851. Milligan, D. E., Jacox, M. E., Bass, A., 6850. Milligan, D. E., Jacox, M. E., Bass, A. M., Comeford,

J. J., Mann, D. E., 6852. Milligan, D. E., Jacox, M. E., Comeford, J. J., Mann,

D. E., 6802. Milligan, D. E., Jacox, M. E., McKinley, J. D., 9026. Milligan, D. E., Jacox, M. E., Moll, N. G., Thompson, W. E., 6848. Milligan, D. E., Mann, D. E., Jacox, M. E., 6134.

Milliken, L. T., Parks, E. J., Linnig, F. J., 4528. Milhnan, G. H., Rose, F. L., J 67D2-248, 107 (1963).

Mills, R. M., J 67C4-139, 283 (1963). Milne-Thompson, L: M., (1964) AMS55, pp. 567, 587. Milton, J. B., Fey, R. L., Morgan, A. H., 4894. Minardi, E., Engelmann, F., Feix, M., 5258. Mine, H., Marcus, M., 4208; 5012; 5036. Mincsinger, R. R., Wright, J. R., 5749; 5845. Minnhagen, L., J 68C4-169, 237 (1964) ; 5977. Misme, P., J 68D7-383, 851 (1964). Misme, P., Bean, B. R., Thayer, G. D., 3652. Misme, P., du Castel, F., Spizzichino, A., Voge, J., J 66D3-195, 273 (1962). Missimer, J. K., O'Lcary, M. J., Hobbs, R. B., Erving,

J. J., 998A.

Missoni, G., Motz, J. W., 4009. Mitchel, J. W., Krewson, C. F., Wood, J. W., Wolfe, W. C, Marth, P. C, 3325. Mittra, R., J 67D2-260, 245 (1963). Mittra, R., Duff, G. L., J 69D5-503, 681 (1965). Miya, K., Sasaki, T., Ishikawa, M., J 65D1-107, 93

(1961). Mizushima, M., Wacker, P. F., Petersen, J. D., Ballard,

J. R., (1964) Mono.70, Vol. I. Mizushima, M., Zimmerer, R. W., 4238. Moats, J. S., Henderson, M. M., Stevens, M. E., Newman, S. M., (1966) M276.

Mockler, R. C, J 68D5-360, 523 (1964) ; 3981; 4437. Mockler, R. C, Barnes, J. A., 3247A; 3856; 9088. Mockler, R. C, Redder, R. E., 4189; 6543. Mockler, R. C, Bechler, R. E., Barnes, J. A., 3424. Mockler, R. C, Beehler, R. E., Richardson, J. M., 6626. Mockler, R. C, Beehler, R. E., Snider, C. S., 3375;

3443. Mockler, R. C, Brittin, W. E., 4763. Mockler, R. C, Richardson, J. M., 6374. Mockler, R. C, Richardson, J. M., Beehler, R. E., Fey,

R. L., 4501. Moffat, R. J., Halpern, C, (1961) Mono.27.

Moffitt, J. K., Marsden, C. P., (1963) H83.

Moffitt, J. K., Marsden, C. P., Keery, W. J., (1961) H70; 4629. Mohlcr, F. L., (1962) TN131; (1964) TN243.

Mohler, F. L., Quinn, E. I., J 65A2-89, 93 (1961)

.

Mnhling, F., Grandy, W. T., 8966. Molin, J., Block, S., Piermarini, J., 5863. Moll, N. G., Jacox, M. E., Milligan, D. E., Thompson, W. E., 6848. Mond, B., Shisha, O., J 68B3-124, 115 (1964). Mondal, P. K., De, M., J 69C3-200, 199 (1965). Montes, H., Bandyopadhyay, P., J 68D11-427, 1237

(1964). Montgomery, G. F., 3186; 3513; 4118; 4215; 4430; 4459; 4560; 4827; 5217; 5241. Montgomery, G. F., Bretemps, F. R., 3891. Montzingo, L. J., Jr., Severo, N. C, 4547. Moore, C. E., (1962) C488, Sections 3, 4, and 5; (1965) NSRDS-NBS3, Sec. 1; 3430A; 4187; 4492; 5033, 5093; 5491; 5734; 5919; 6152; 6215; 6486; 6602; 6772; 8991; 9066. Moore, C. E., Branscomb, L. M., 5201. Moore, C. E., Malitson, H. H., Purcell, J. D., Tousey, R., 3867. Moore, C. E., Rubin, V. C, Kiess, C. C, J 65A1-80, 1 (1961). Moore, D. G., 3801; 5427. 446
Moore, D. (J.. Clark, H. E., 6863. Moore, D. G., Eubanks, A. G., Pennington, W. A., 4619. Moore, D. G., Eubanks, A. G., Thornton, H. R., Hayes, W. D., Jr., Crigler, A. W., 4324. Moore, D. G., Kelly, F. J., 6570. Moore, D. G., Mason, M. A., 745A. Moore, D. G., Pitts, J. W., (1961) Mono.26; 1041B. Moore, D. G., Pitts, J. W., Harrison, W. N., 951A. Moore, D. G., Potter, A., (1962) Mono.44. Moore, G. A., 5992; 5993. Moore, G. A., Michaelis, R. E., Yakowitz, H., J 68A4-

282, 343 (1964); (1964) M260-3. Moore, G. A., Shives, T. R., 4246. Moore, G. A., Wyman, L. L., J 67A2-200, 127 (1963); 4119; 5606. Moore, G. A., Wyman, L. L., Cuthill, J. R., Park, J. J., Yakowitz, H., J 66A4-171, 351 (1962). Moore, J. G., Roach, F. E., Bruner, E. C., Jr., Cronin,

H., Silverynan, S. M., 3836. Moore, R. K., Blair, W. E., J 65D6-159, 547 (1961). Moore, R. A'., Chia, R. C., Fung, A. K., J 69D4-499, 641

(1965). Moore, R. K., Hayre, R. K., Hayre, H. S., J 65D5-147, 427 (1961). Moore, R. T., Jean, A. G., Hornback, C. E., Doherty,

R. H., Winkehnan, J. R., 9057. Moore, R. T., Stark, M. C., Cahn, L., 5991. Moore, T. R., 3943. Moore, W. J. M., Dunfee, B. L., 6594. Moore, W. J. M., Sze, W. C., Harris, F. K., Kusters, N. L., Petersens, 0., 5913. Mopsik, F. I., 6419. Mordfin, L., (1962) TN136 (PB161637) ; 2348A; 3430. Mordfin, L., Bloss, R. L., 4911. Mordfin, L., Halsey, N., 3540; 5598. Mordfin, L., Halsey, N., Greene, G. E., 3238. Mordfin, L., Kroll, W. D., Garland, W. A., 745B.

Mordfin, L., Robusto, T., Jr., 4833. Mordfin, L., Wilks, I. E., 1169A. Morgan, A. H., (1963) M248, p. 37; 4665; 5825. Morgan, A. H., Andrews, D. H., 4175. Morgan, A. H., Baltzer, 0. J., J 68D11-423, 1219 (1964)

.

Morgan, A. H., Barnes, J. A., 3299. Morgan, A. H., Blair, B. E., J 69D7-525, 915 (1965). Morgan, A. H., Crow, E. L., Blair, B. E., J 69D7-524,

905 (1965) ; 6810. Morgan, A. H., Fey, R. L., Milton, J. B., 4894. Morgan, A. H., Hudson, P. A., (1960) TN77 (PB161-

578). Morgan, A. H., Simpson, P. R., 3288C. Morgan, A. H., Watt, A. D., Plush, R. W., Brown, W. W., J 65D6-164, 617 (1961). Morgan, M. G., Helliwell, R. A., J 64D6, 644 (1960). Morgan, V. D., Brenner, A., 152B. Morgenstern, J. C, Johler, J. R., (1965) TN310; 8962. Morgenthaler, G. W., Reismann, H., J 67B3-102, 181

(1963) . Mori, H., Oppenhcim, I., Ross, J., 4929.

Moriello, J., Hagfors, T., J 69D12-607, 1614 (1965). Mork, K., Olsen, H., 8971. Morokuma, T., J 68C1-149, 25 (1964). Morokuma, T., Nefiien, K. F., Lawrence, T. R., Klucher,

T. M., 5418. Morowitz, H. J., Fires, E., Higgins, T. F., 898A.

Morris, D., Bussey, H. E., Gray, J. E., Bamberger,

E. C, Rushton, E., Russell, G., Petley, B. W.,

6149. Morris, E. E., Boyd, A. E., 3779. Morris, J. B., Ogburn, F., Bechtoldt, C. J., DeKoranyi,

A., 9048. Morris, M. A., Ogburn, F., 4921. Morris, M. C, Swanson, H. E., Evans, E. H., Ulmcr, L., (1964) Mono.25, Sec. 3. Morris, M. C, Swanson, H. E., Stinchfield, R. P., Evans,

E. H., (1962) Mono.25, Sec. 1; (1963) Mono.25,

Sec. 2.

Morris, R. W., Brauer, G. M., Howe, W. B., J 67A3-213,

253 (1963). Morrow, W. L., 4033. Morrow, W. L., Flynn, J. H., 6013; 6287. Morton, M., Milkovich, R., Mclntyre, D., Bradley, J. L., 5390. Mosburg, E. R., Jr., Caswell, R. S., Chin, J., 2776A. Mosburg, E. R., Jr., Caswell, R. S., Noyce, R. H., Gar

finkel, S. B., 5631. Mosburg, E. R., Jr., Murphey, W. M., (1960) TN63

(PB161564) ; 3940. Mosburg, E. R., Jr., Noyce, R. H., Garfiinkel, S. B., Caswell, R. S., 5174. Mosburg, E. R., Jr., Persson, K. B., 6226. Moss, M. L., Posner, A. S., 3918. Motz, H., J 69D5-502, 671 (1965). Motz, J. W., Koch, H. W., 3154. Motz, J. W., Missoni, G., 4009. Motz, J. W., Olsen, H., Koch, H. W., 6030. Motz, J. W., Placious, R. C, 3451; 5441; 6172. Motz, J. W., Placious, R. C, Dick, C. E., 5270. Motzkin, T. S., 1240A; 1782A.

Moulder, J. C, Gniewek, J. J., Clark, A. F., (1965) TN321.

Mountain, R. D., J 69A6-373, 523 (1965) ; J 70A3-396, 207 (1966). Mountain, R. D., Larsen, S. Y., Zwanzig, R., 8922. Mountain, R. D., Zwanzig, R., 6777. Moyer, J. D., Isbell, H. S., Frush, H. L., J 64A4-60,

359 (1960). Moyer, J. W., Bass, A. M., 3215. Muehlhause, C. O., 3661; 3816; 5024. Muhlcman, D. O., J 69D12-600, 1580 (1965); J 69D12-

615, 1630 (1965). Muhlenhaupt, R. C, Smelser, P., (1963) TN200.

Mullen, L. 0., Hiza, M. J., 6476. Mullen, L. O., Jacobs, R. B., 5669. Mullen, L. O., Van Gundy, D. A., Jacobs, R. B., 3403. Mullen, P. A., Currie, L. A., France, G. M., Ill, 6331. Mulligan, B. W., Bean, B. L., 9145. Mulligan, B. W., Caul, H. J., Rasberry, S. D., Scribner, B. F., J 68A1-251, 5 (1964). Mumford, W. W., J 68D5-360, 536 (1964). Mundy, R. E., Candela, G. A., 3957; 4462; 9056. Munley, F. A., Peiser, H. S., Wachtman, J. B., Jr., McCleary, L. C, J 69A5-368, 461 (1965). Murad, E., 4370. Murad, E., Ausloos, P., 4353. Murahata, S., Barghausen, A. F., Guiraud, F. O., McGavin, R. E., Wilber, R. W., (1963) TN103.

Muraoka, K., J 70C2-220, 65 (1966). Murphey, W. M., 9063. Murphey, W. M., Chin, J., 5417. Murphey, W. M., Mosburg, E. R., Jr., (1960) TN63

(PB161564) ; 3940. Murphy, A. C, Brady, A. H., Crombie, D. D., (1963) TN206-1; (1964) TN206-2; (1964) TN206-3. Murphy, A. C, Brady, A. H., Crombie, D. D., Jean, A. G., Steele, F. K., 6182. Murphy, A. C, Crary, J. H., (1965) TN206-4, TN206-5. Murphy, A. C, Jean, A. G., Wait, J. R., Wasmundt,

D. F., J 65D5-153, 475 (1961). Murphy, P. W., Wiese, W. L., 5656. Murphy, T. J., Catanzaro, E. J., Garner, E. L., Sheilds, W. R., J 68A6-306, 593 (1964). Murphy, T. J., Clabaugh, W. S., Gilchrist, R., J 64A4-

59,355 (I960); J 64A6-79, 535 (1960). Murphy, T. ./., Shields, W. R., Catanzaro, E. J., Garner, E. L., J 70A2-395, 193 (1966)

.

Murphy, T. J., Shields, W. R., Garner, E. L., J 68A6-

305, 589 (1964). Murphy, T. J., Shields, W. R., Garner, E. L., Dibeler, V. H., 4461. Murphy, T. ./., Shields, W. R., Goldich, S. S., Garner,

E. L., 6880. Murphy, T. J., Taylor, J. K., 8951. Mushiake, Y., J 69D4-486, 503 (1965). 447
Mushiake, Y., Adachi, S., J 69D2-451, 171 (1965). Muster, D. F., Schweppe, J. L., Eichberger, L. C,

Michaels, E. L., Paskusz, G. F., (1963) Mono.67. Myers, A. L., Prausnitz, J. M., 5434; 9114. Myers, R. J., Harmony, M. D., Schoen, L. J., hide, D. R.,

Jr., Mann, D. E., 4124. Myklebust, R L., Ogburn, F., 5369. N

Nagai, S., (1962) Paper VIII-S2, Mono.43, V.II, p. 1043. Naito, K.,Hay, D. R., J 69D6-520, 877 (1965). Nakagama, Y., Earnshaw, K. B., 5353. Nakagami, M., J 68D9-399, 995 (1964). Napolitano, A., Hawkins, E. G., J 68A5-291, 439 (1964). Napolitano, A., Macedo, P. B., Hawkins, E. T., J 69A5-

366, 449 (1965) ; 9132. Napolitano, A., Spinner, S., J 70A2-390, 147 (1966). Narsinga Roa, K. V., J 69D4-496, 617 (1965). Nason, M. E., 4075; 4254; 5620. Nass, H. W., DeVoe, J. R., Meinke, W. W., 4257. Natrella, M. G., (1963) H91; (1964) TN238, p. 9; 3859; 5352. Nccdham, R. M., (1965) M269, p. 157. Nefflen, K. F., Gardner, I. C., 3583.

Nefflen, K. F., Mielenz, K. D., 6769.

Nefflen, K. F., Mielenz, K. D., Stephens, R. B., J 68C1-

147, 1 (1964).

Nefflen, K. F., Morokuma, T., Lawrence, T. R., Klucher,

T. M., 5418. Nelsen, R. E., Coryell, M. R., (1966) Mono.96.

Nelson, L. S., Bass, A. M., Keubler, N. A., 6238. Nelson, R. E., Jones, R. N., 5042. Nerenst, P., (1962) Paper VI-2, Mono.43, Vol. II, p. 807. Nesenbergs, M., 5249; 5251; 5867; 5934. Nesh, F., 5810. Nesh, F., Ballard, D. B., 5329. Nesh, F., Brown, R. F., Jr., 4452. Nettleton, R. E., J 66B3-79, 101 (1962); 3457; 4026; 4320; 4549; 4962; 4719; 4780; 5366; 5448; 5922;

6225. Neugebauer, H. E. J., Bachynski, M. P., J 64D4-64, 317

(1960).

Neville, A. M., Kenington, H. W., (1962) Paper V-sl, Mono.43, Vol. II, p. 703. Newell, A. C., Baird, R. C., 6576A.

Ncivkirk, G. A., Curtis, G. W., Watson, D. K., Manning,

R., Shelby, J., 3335A. Newman, E. S., J 66A5-173, 381 (1962) ; J 68A6-313,

645 (1964). Newman, E. S., Berman, H. A., J 65A3-102, 197 (1961) ; J 67A1-188, 1 (1963) ; (1962) Paper III-S1, Mono.-

43, Vol. I, p. 247; 3601; 4141 A; 5225; 5226. Newman, E. S., Pike, R. G., Hubbard, D., 3448. Newman, J., Atkinson, W. R., Fey, L., 5131; 5683; 5955;

6237. Newman, L. J., Bonanomi, J., Kartaschoff, P., Atkinson, W. R. 5868. Newman, M., J 66B3-76, 91 (1962); 3166; 3263; 3596;

3706; 3802; 4014; 4184A; 4778; 4918; 4957; 5054;

5215; 5496; 5510; 5511; 5869; 6090; 6230; 6243;

6571; 6614; 6892. Newman, M., Brualdi, R. A., J 69B3-147, 159 (1965);

6794. Newman, M., Conrad, G. T., Jr., 4593. Newman, M., Conrad, G. T., Stansburi/, A. P., 3397. Newman, M., Fell, H., Ordman, E., J 67B1-93, 61 (1963). Newman, M., Goldberg, K., Haynsworth, E., (1964) AMS55, p. 821. Newman, M., Hall, M., Jr., 5262. Newman, M., Knopp, M. I., J 69B1&2-137, 85 (1965). Newman, M., Knopp, M. I., Lehner, J., 6540. Newman, M., Lehner, J., 6532 ; 8981. Newman, M., Marcus, M., 6773. Newman, M., Reiner, I., 3231. Newman, M., Smart, J. R., 5154; 5492; 5513.

Newman, P. A., Bay, Z., 4008. Newman, P. A., Bay, Z., McLernon, F. D., J 65C1-54,

51 (1961). Newman, P. A., Bay, Z., Seliger, H. H., 3958. Newman, S. B., J 67A2-201, 149 (1963); 3254; 4764;

5644; 5862; 6765. Newman, S. B., Brauer, G. M., 4527. Newman, S. B., Capott, R. J., Mandel, J., 3277. Newman, S. B., Fletcher, D., 6367. Newman, S. B., Greenfeld, S. H., 5599. Newman, S. B., Kissinger, H. E., 4584. Newman, S. B., Stromberg, R. R., Lee, W. M., Quasius, A. R., Reinhart, F. W., 3151. Newman, S. B., Wolock, I., J 67A6-249, 625 (1963) ; 4765; 5484; 6086; 6764. Neivman, S. B., Wolock, I., Kies, J. A., 3214. Newman, S. B., Young, R. W., Capott, R. J., 9043. Newman, S. M., Henderson, M. M., Moats, J. S., Stevens, M. E., (1966) M276. Newton, C. J., J 65C4-79, 265 (1961) ; J 67C2-123, 101

(1963) ; J 68C4-171, 249 (1964). Newton, C. J., Ogburn, F., 5634. Newton, C. J., Vacher, H. C, J 65C1-55, 57 (1961). Ney, W. R., Meyerson, M. R., Young, T. R., J 64C3-38, 175 (1960) ; 4348. Ney, W. R., Taylor, L. S., (1961) TN92 (PB161593).

Nicholls, R. W., J 65A5-126, 451 (1961); J 66A3-156,

227 (1962); J 68A1-254, 75 (1964); J 68A5-300,

535 (1964) ; J 69A4-357, 369 (1965) ; J 69A5-360,

397 (1965); 3588; 3686; 3781; 3833.

Xieholls, R. W., Broida, H. P., 3708.

Nicholls, R. W., Fallona, J. P., 3132.

Nicholls, R. W., Fallona, J. P., Ferguson, H. I. S., 4085A.

Nicholls, R. W., Frazer, P. A., Jarmain, W. R., McEachran, R. P., 3911.

Nicholls, R. W., Jarmain, W. R., Ebisuzaki, R., 3549.

Nicholls, R. W., Krishnamachari, S. L. N. G., 3684.

Nicholls, R. W., Krishnamachari, S. L. N. G., Broida, H. P., 4066.

Nicholls, R. W., Perkinson, W. H., 3782.

Nicholls, R. W., Reeves, E. M., Bromley, D. A., 3207.

Nicholls, R. W., Van der Laan, H., 3400. Niesen, E., 4039. Niesen, E., Anson, W. J., 4652. Niesen, E., Little, W. E., 5879. Nimcroff, I., 5953; 5954; 6069; 6385. Nimeroff, I., Douglas, C. A., 3507. Nimeroff, I., Judd, D. B., 6382A.

Nimcroff, I., Rosenblatt, J. R., Dannemiller, M. C,

J 65A6-129, 475 (1961) ; 5116. Nimeroff, I., Yurow, J. A., 6681. Noble, J. L., Vogler, L. E., J 67D5-289, 567 (1963) ; (1963) TN173; (1964) Mono.72.

Northover, F. H., J 65D4-142, 385 (1961) ; J 66D1-175,

73 (1962). Norton, K. A., J 64D4-75, 413 (1960) ; (1962) TN158;

3326; 3456; 3605; 4877; 6365; 6719. Norton, K. A., Bailey, D. K., Cottony, H. V., Kirby,

R. C, Slutz, R. J., Davis, R. M., Merrill, R G., 3737. Norton, K. A., Barrows, E. C, Thompson, M. C, Jr., Janes, H. B., 5117. Norton, K. A., Barsis, A. P., Rice, P. L., 4853; 4854;

5585. Norton, K. A., Barsis, A. P., Rice, P. L., Elder, P. H., (1961) TN102 (PB161603).

Norton, K. A., Herbstreit, J. W., Janes, H. B., Hornberg, K. O., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Wells, P. L., Thompson, M. C, Jr, Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33. Norton, K. A., Rice, P. L., Longley, A. G., Barsis, A. P., (1965) TN101, Vols. 1 and 2. Norton, M. T., 5143. Norton, R. B., 5170; 5893. Norton, R. B., Chilton, C. J., Steele, F. K., 5849. Norton, R. B., VanZandt, T. E., 6439. 44H
Norton, R. B., VanZandt, T. E., Denison, J. S., 4426;

5144. Norton, R, B., VanZandt, T. E., Stonehocker, G. H., 3709. Notz, W. A., Leiner, A. L., Smith, J. L., Marimont,

R. B., 3164. Notz, W. A., Leiner, A. L., Smith, J. L., Weinberger, A., 1159AA.

Noyce, R. H., Barnes, M. TV'., 4122. Noyce, R. H., Caswell, R. S., Garfinkel, S. B., Mosburg,

E. R., Jr., 5631. Noyce, R. H., Mosburg, E. R., Jr., Garfinkel, S. B., Caswell, R. S., 5174. Noyce, R. H., Ruthberg, S., Barnes, M. W., J 67A4-220,

309 (1963) ; 5185. Noyes, W. A., Jr., Okabe, H., 2379A. Nugent, L. J., Cornell, C. D., 4770. Nugent, L. J., Mann, D. E., Lide, D. R., Jr., 4771. Nupen, W., (1961) TN84 (PB161585), TN94 (PB161-

595); (1962) TN128 (PB161629) ; (1963) TN171;

(1965) TN304.

Nurse, R. W., (1962) Paper II I, Mono.43, Vol. I, p. 9. Nuttall, R. L., Hilsenrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Hoge, H. J., Masl, J. R., Touloukian, Y. S., Woolley, H. W., 3806. o

Obata, Y., Silverman, J. N., 5714. Oberhettinger, F., J 65B1-40, 1 (1961) ; J 65B3-57, 203

(1961); (1964) AMS55, p. 555; 994A.

O'Brien, B. J., Van Allen, J. A., Roach, F. E., Gartlein,

C. W., 3486; 4018. Ochs, G. R., 5768; 6095. Ochs, G. R., Bowles, K. L., Cohen, R. S., Balsley, B. B., 3736. Ochs, G. R., Bowles, K. L., Green, J. L., J 66D4-203,

395 (1962). Ochs, G. R., Carpenter, R. J., J 66D3-193, 249 (1962) ; 3342. Ochs, G. R., Carpenter, R. J., Smith, E. K., 4933. Ochs, G. R., Farley, D. T., Jr., Bowles, K. L., Bandyopadhay, P., 5528. Ochs, G. R., Klemperer, W. K., 8972. Ochs, G. R., Klemperer, W. K., Bowles, K. L., 6325. Ochs, G. R., Sugar, G. R., Carpenter, R. J., J 64D5-86,

495 (1960).

Ofelt, G. S., (1961) TN81 (PB161582). Ogburn, F., 4843; 4972; 5481; 5571; 6108. Ogburn, F., Bechtoldt, C. J., Morris, J. B., DeKoranyi,

A., 9048. Ogburn, F., Ernst, D. W., 3339; 3340; 4366. Ogburn, F., Ernst, D. W., Roberts, W. H., 3341. Ogburn, F., Giron, I., 4298. Ogburn, F., Metzger, W. H., Jr., Krasley, P. A., 3898. Ogburn, F., Morris, M. A., 4921. Ogburn, F., Myklebust, R. L., 5369. Ogburn, F., Newton, C. J., 5634. Ogburn, F., Paretzkin, B., Reiser, H. S., 6321. Ogburn, F., Reid, W. E., Jr., 3813. Ogburn, F., Roberts, W. H., 4365. Ohashi, M., Paffenbarger, G. C, Stanford, J. W., 9022;

9067. Ohori, Y., Kamper, R. A., Collier, R. S., 6797. Ohori, Y., Robbins, R. F., Weitzel, D. H., 5447. Okabe, H., 6141. Okabe, H., Becker, D. A., 5811; 5841; 6525. Okabe, H., Becker, D. A., McNesby, J. R., 9127. Okabe, H., Currie, C. L., McNesby, J. R., 5840. Okabe, H., McNesby, J. R., 4403; 5110; 6524. Okabe, H., McNesby, J. R., Tanaka, I., 5112. Okabe, H., Noyes, W. A., Jr., 2379A. O'Leary M. J., Hobbs, R. B., Missimer, J. K., Erving,

Olesen, J. K., Wright, J. W., 4374.

Olien, N. A., 5194.

Olien, N. A., Hall, L. A., (1965) TN309.

Oliner, A. A., Collin, R. E., J 68D4-359, 469 (1964).

Oliver, B. M., J 64D6, 601 (1960).

Olsen, H., 5546. Olsen, H., Maximon, L. C, 4752; 4825; 6295. Olsen, H., Mork, K., 8971.

Olsen, H., Motz, J. W., Koch, H. W'., 6030. Olsen, H., Zeitler, E., 6363. Olsen, J. L., Gygax, S., Kropschot, R. H., 6080. Olsen, K. H., King, R. B., Corliss, C. H., 8928. Olsen, L. 0., 4514; 5677. Olsen, L. O., Freeze, P. D., J 68C4-174, 263 (1964)

;

5081. Olson, W. B., Allen, H. C, Jr., 4956; 5124. Olson, W. B., Allen, H. C, Jr., J 67A4-226, 359 (1963).

Olson, W. B., Allen, H. C, Jr., Plyer, E. K., J 67A1-

191, 27 (1963).

Olver, F. W. J., J 69B4-157, 271 (1965) ; J 69B4-158,

291 (1965); (1964) AMS55, p. 355; 3241; 5340;

6047; 6048; 6049; 6740; 8910.

Olver, F. W. J., Stenger, F., 6741. O'Malley, T., Geltman, S., 6648. O'Mara, J. H., Madorosky, S. L., Mclntyre, D., Straus,

S., J 66A4-163, 307 (1962). O'Mara, J. H., Mclntyre, D., 3327. O'Mara, J. H., Mclntyre, D. M., Konouck, B. C, 3365. O'Mara, J. H., Mclntyre, D., Straus, S., J 68A2-263,

153 (1964). Ondik, H. M., 6484; 9095. Ondik, H. M., Eanes, E. D., 5052

Ondik, H. M., MacGillairy, C. H., Block, S., 4378. Ondrejka, A. R., Hudson, P. A., J 70C1-216, 13 (1966). Ondrejka, A. R., Hudson, P. A., Ecklund, W. L., 4754. Ong, K. C, Robinson, R. A., Bates, R. C, 6155. Oppcnheim, I., Andersen, H. C, Shuler, K. E., Weiss, G.

H., 6056; 6224. Oppenheim, I., Bloom, M., 3267B. Oppenheim, I., Friedman, A. S., 4251. Oppenheim, I., Lifson, S., 3660. Oppenheim, I., Mori, H., Ross, J., 4929. Oppenheim, I., Shuler, K. E., 6847. Ordman, E., Fell, H., Newman, M., J 67B1-93, 61

(1963). Ordway, F., (1962) Paper II-2, Mono.43, Vol. I, p. 39; 3626; 5870; 6561; 9149. Ordway, F., Smith, D. K., Majumdar, A. J., 4268; 6673. Orem, T. H., 5567. Orentlicher, M., Prausnitz, J. M., 6505. Ormsby, W. C, 3862. Ormsby, W. C, Shartsis, J. M., 3468; 3803. Ormsby, W. C, Shartsis, J. M., Woodside, K. H., 4641. Ormsby, W. C, Weyl, W. A., 3446. Ormsby, W. C, Woodside, K. H., 3804.

Orrall, F. Q., Jefferies, J. T., 4204; 4805; 5535; 6835;

6836. Orzag, A., J 69D12-623, 1681 (1965). Ortner, J., Little, C. G., Brown, R. R., Hartz, T. R., Holt, O., Hultqvist, B., Leinbach, H., 4955. Oser, H., Shuler, K. E., Weiss, G., 6345. Oser, H., Borsch-Supan, W., J 67B1-92, 41 (1963).

Oser, H., Marvin, R. S., J 66B4-85, 171 (1962) ; J 67B2-

96, 87 (1963). Ostrow, S. M., (1962) H90.

Ostrowski, A. M., 2657A; 3123A; 3272; 3273; 3361;

Ottesen, H., Maley, S. W., J 68D8-390, 915 (1964).

Otto, E. M., 6046; 6739. Overberg, R. J., Leaderman, H., J 65C1-51, 9 (1961). Overbury, K. G., (1963) M248, p. 251. Owen, R. W., Smith, L. L., (1966) TN329. Owen, R. W., Smith, L. L., Roach, F. E., 9058. Owens, J. C, Bender, P. L., 6660. 449
Owren, L., Hunsucker, R. D., J 66D5-218, 581 (1962); J 67D4-273, 385 (1963). Ozanich, A. M., Jr., Bean, B. R., Horn, J. D., (1960) Mono.22.

Paabo, M., Bates, R. G., Robinson, R. A., J 67A6-242,

573 (1963); 5423; 6705; 9036. Paabo, M., Bower, V. E., Bates, R. G., J 65A3-110, 267 (1961); 3939. Paabo, M., Davis, M. M., J 64A6-78, 533 (1960) ; J

67A3-211, 241 (1963) ; 3418. Paabo, M., Davis, M. M., Robinson, R. A., J 64A4-57, 347 (1960); J 64A6-77, 531 (1960). Paabo, M., Robinson, R. A., 5799. Paabo, M„ Robinson, R. A., Bates, R. G., 6390, 8987. Paabo, M., Woodhead, C. M., Robinson, R. A., Bates, R. G., J 69A3-345, 263 (1965) ; 6617. Padgett, A., Krauss, M., 3525. Padhi, T., J 69D7-534, 997 (1965). Paffenbarger, G. C, 2301A; 3304; 3439; 3493; 3696;

4683; 4898; 5692; 5755; 6373; 6884. Paffenbarger, G. C, Anderson, J. N., 4865. Paffenbarger, G. C, Caul, H. J., Crowell, W. E., Kimmel, W. D., 6003. Paffenbarger, G. C, Caul, H. J., Longton, R., Sweeney, W. T., 5312. Paffenbarger, G. C, Denton, G. B., 3808. Paffenbarger, G. C, Forziati, A. F., Kumpula, M. P., 3117. Paffenbarger, G. C, Kumpida, M. P., 6647. Paffenbarger, G. C, Ohashi, M., Stanford, J. W., 9022;

9067. Paffenbarger, G. C, Souder, W., 3281A; 5860. Paffenbarger, G. C, Stanford, J. W., Burns, C. L., 1484A.

Paffenbarger, G. C, Stanford, J. W., Sweeney, W. T„

3420; 4476; 6109. Paffenbarger, G. C, Stanford, J. W., Weigel, K. V., 4286. Paffenbarger, G. C, Stanford, J. W., Weigel, K. V., Sweeney, W. T., 3481. Paffenbarger, G. C, Woelfel, J. B., 3184; 3253; 4306; 5228; 8958; 8997. Paffenbarger, G. C, Woelfel, J. B., Sweeney, W. T., 3504; 3993; 4586; 4587; 5676; 5703; 6637, 8995. Page, C. H., J 65B4-60, 227 (1961); J 67B1-91, 31, (1963); J 69C3-197, 181 (1965); 1267A; 6677; 6811; 6827. Palasky, E. C, Henig, S., J 66C3-103, 271 (1962).

Pall, G., Taussky, 0., 2027A. Palumbo, C. J., Sodha, M. S., J 69D1-448, 139 (1965). Palumbo, F. J., Sterling, J. T., Wyman, L. L., J 66A6-

183, 483 (1962). Pankey, T., Senftle, F. E., Grant, F. A., 3621. Papas, C. H., Lee, K. S. H., J 69D10-565, 1313 (1965). Papp, G., Bay, Z., 5986; 6689. Pappas, C. F., Vogler, L. E., Rice, P. L., J 65D2-116,

175 (1961). Paquette, D., Wiese, W. L., 5982. Paquette, D., Wiese, W. L., Solarski, J. E., 4083; 5597. Paretzkin, B., Deslattes, R. D., Torgensen, J. L., Horton, A. T., 8955. Paretzkin, B., Likins, R. C, Posner, A. S., Frost, A.

P., 4046. Paretzkin, B., Ogburn, F., Peiser, H. S., 6321. Paretzkin, B., Peiser, H. S., 6117. Park, J. H., J 66C1-83, 19 (1962). Park, J. H., Cones, H. N., J 64C3-41, 229 (1960) ; J 66C3-96, 197 (1962). Park, J. H., Tsai, D. H., 4513.

Park, J. J., Wyman, L. L., Cuthill, J. R., Moore, G. A., Yakowitz, H., J 66A4-171, 351 (1962). Park, T., Mertz, D. B., Youden, W. J., 6874. Parker, E. N., J 65D6-157, 537 (1961). Parker, E. R., (1963) Mono.59, p. 1. Parker, H. S., Burdick, M. D., (1964) TN237, p. 7. Parker, H. S., Hasko, S., 4962. Parker, H. S., Hoekstra, H. R., 3987. Parker, H. S., Knudsen, F. P., Burdick, M. D., 3543. Parker, J. M., Gates, D. M., 4285. Parker, M. S., Florin, R. E., Wall, L. A., J 70A2-387,

115 (1966). Parker, M. S., Krasnansky, V. J., Achhammer, B. G., 4048; 6012. Parker, R. A., 4152; 4312. Parker, R. A., Wasilik, J. H„ 3501A. Parker, R. A., Wasik, S. P., 3180. Parker, R. L., 4674. Parker, R. L., Anderson, R. L., Hardy, S. C, 5378. Parker, R. L., Coriell, S. R., 9034

Parker, R. L., Hardy, S. C, 5113; 6526. Parker, R. L., Krinsky, A., 5319. Parker, R. L., Kushner, L. M., 4102. Parker, R. L., Simmons, J. A., Howard, R. E., 6497. Parker, V. B., (1965) NSRDS-NBS2.

Parker, V. B., Wagman, D. D., Evans, W. H., Halow,

I., Bailey, S. M., Schumm, R. H., (1965) TN270-1;

(1966) TN270-2

Parks, E. J., Linnig, F. J., 5499. Parks, E. J., Linnig, F. J., Stewart, J. E., J 68A5-296,

499 (1964). Parks, E. J., Linnig, F. J., Tryon, M., 4188. Parks, E. J., Linnig, F. J., Wall, L. A., J 65A1-88, 70

(1961). Parks, E. J., Linnig, F. J., Wood, L. A., 6052. Parks, E. J., Milliken, L. T., Linnig, F. J;, 4528. Parrent, G. B., Jr., J 64D6, 742 (I960). Parthasarathy, R., Berkey, F. T., J 69D3-479, 415

(1965) . Parthasarathy, R., Lerfald, G. M., 6664. Parthasarathy, R., Lerfald, G. M., Little, C. G., 5279;

6001. Parthasarathy, R., Little, C. G., Lerfald, R., J 68D8-

384, 859 (1964); 4299; 4920; 5808. Parzen, E., J 68D9-394, 937 (1964). Paskusz, G. F., Schweppe, J. L., Eichberger, L. C,

Muster, D. F., Michaels, E. L., (1963) Mono.67.

Passaglia, E., 6202. Passaglia, E., Crissman, J. M., J 70A3-398, 225 (1966).

Passaglia, E., Keith, H. D., J 68A5-297, 513 (1964).

Passaglia, E., Kevorkian, H. K., 5759. Passaglia, E., Martin, G. M., J 68A3-273, 273 (1964); J 68A5-298, 519 (1964); J 70A3-397, 221 (1966). Passaglia, E., McCrackin, F. L., Stromberg, R. R., Steinberg, H. L., J 67A4-227, 363 (1963). Passaglia, E., Stromberg, R. R., J 68A6-307, 601

(1964). Passaglia, E., Stromberg, R. R., Grant, W. H., J 68A4-

287, 391 (1964). Passaglia, E., Stromberg, R. R., Tutas, D. J., J 67A5-

232, 431 (1963); (1964) M256, p. 281; 6654. Passaglia, E., Tutas, D. J., Stromberg, R. R., 6408. Pasternack, R. F., McDonnell, P. M., 6548; 6684. Pasternack, R. F., Silverton, E., J 70A1-384, 23

(1966) . Patek, J. M., Lashof, T. W., 4705. Patterson, D. W., Herbstreit, J. W., Little, C. G., 5781. Patterson, P. L., Beaty, E. C, 5629; 6870. Paul, A. K., Wright, J. W., 5678; 6025; 6380. Paulsen, P. J., Branch, P. E., (1966) TN286.

Paulson, M. R., Gossard, E. E., J 68D3-341, 265 (1964). Payne, B. F., Dimoff, T., J 67C4-144, 327 (1963). Payne E. G., Purcell, J. R., 4330; 5383. Payne, L. E., 3 65B2-55, 157 (1961). 450
Payne, L. E., Bramble, J. H., J 65B2-54, 151 (19G1) ; J 65B4-66, 269 (1961); J 67B3-99, 145 (1963);

J 67B3-100, 157 (1963); J68B2-121, 75 (1964); Panne, L. E., Pel!, W. H., 3677; 3871; 3872. Pavne, R. IK, Forman, R. A., Kahn, A. H., 6897. Pearl, M., 3117A; 3270A.

Pearl, M. H.. Katz, I. ./., J 70B1-167, 47 (1966).

Pearlstein, R. M., Ban, Z., 5171; 5276; 5655. Pearson, E. G., Enaqonio, D. P., Saylor, C. P., 5082. Pcan/, B. A., J 65C3-66, 157 (1961); J 67C2-125, 119

(1963) ; J 69C2-194, 145 (1965) ; J 70C2-224, 139

(1966) ; 3148; 3984. Peavy, B.A., Eubanks, A. G., 5558. Peary, S., Schopf, A., (1964) AMS55, p. 1011. Peck, R. L., J 66C1-82, 13 (1962). Pecker, C., Rohrlich, F., 5389. Pecker, C, Seaton, M. J., Dalgarno, A., (1961) TN124

(PB161625).

Pecker, C., Thomas, R. N., 4252A; 4643; 4919; 5617;

8948. Pecker, C., Jefferies, J. T., Thomas, R. N., 5053. Peckmann, P., J 68D6-370, 723 (1964).

Peiperl, A., Robinson, R. A., 5765; 5766.

Peiperl, M. D., Carpenter, F. G., Deitz, F. R., 4346.

Peiser, H. S., J 68C4-173, (1964); (1963) TN174;

(1963) TN197; (1964) TN236; 3917; 4712.

Peiser, H. S., Aimer, H. E., Bowman, H. A., Jensen, M. W., Macurdy, L. B., Wasko, B., J 68C3-159, 141

(1964) . Peiser, H. S., Aimer, H. E., Macurdy, L. B., Week, E.

A., J 66C1-85, 33 (1962).

Peiser, H. S., Bolz, L. H., Broida, H. P., 4922. Peiser, H. S., Bolz, L. H., Mauer, F. A., 3208.

Peiser, H. S., Levine, E. P., 5738.

Peiser, H. S., Ogburn, F., Paretzkin, B., 6321.

Peiser, H. S., Paretzkin, B., 6117.

Peiser, H. S., Torgesen, J. L., 6671.

Peiser, H. S., Wachtman, J. B., Jr., J 69A2-340, 193

(1965) ; J 69A4-351, 309 (1965); 4964.

Peiser, H. S., Wachtman, J. B., Jr., Dickson, R. W.,

J 67A5-229, 395 (1963).

Peiser, H. S., Wachtman, J. B., Jr., Levine, E. P., J 67A4-216, 281 (1963).

Peiser, H. S., Wachtman, J. B., Jr., Munley, F. A., McCleary, L. C., J 69A5-368, 461 (1965).

Pell, W. H., Payne, L. E., 3677; 3871; 3872. Pellam, J. R., Pollack, G. L., 9136. Penfold, A. S., Leiss, J. E., 3137. Penner, S., 3989. Penner, S., Leiss, J. E., 3281. Penner, S., Schrack, R. A., Leiss, J. E., 3607; 4786. Penney, R. W., Achenbach, P. R., Phillips, C. W., 6859. Penney, R. W., Phillips, C. W., Goddard, W. F., Achenbach, P. R., Johnson, H. D., 3395. Pennington, W. A., Eubanks, A. G., Moore, D. G., 4619. Penny, R. W., Achenbach, P. R., Phillips, C. W., 6859. Penrod, P. E., Wyman, L. L., 4091. Percival, A., Buttler, F. G., Taylor, H. F. W., (1962) Paper III-S5, Mono.43, Vol. I, p. 277. Perkins, R. R., Taylor, D. F., Kumpula, J. W., 4517. Perkinson, W. H., Nicholls, R. W., 3782.

Perloff, A., 6436.

Perloff, A., Block, S., 3612; 5745; 9065.

Perloff, A., Block, S., Weir, C. E., 6437.

Perloff, A., Hall, L. H., Block, S., 9064.

Perloff, A., Hall, L. H., Mauer, F. A., Block, S., 6669.

Perloff, A., Posner, A. S., 3490.

Perls, T. A., Wildhack, W. A., Kissinger, C. W., Hayes,

J. W., 6657. Perros, T. P., Horowitz, E., J 69A1-328, 53 (1965);

6502. Perry, W. E., Mann, W. B., 3584A.

Pershan, P. S., J 68D5-365, 671 (1964).

Persson, K. B., 4791; 9060. Persson, K. B., Mosburg, E. R., 6226.

Pestalozzi, W. G., Burgeson, D. A., Richards, R. J., 6469. Peter, R. W., J 68D5-365, 657 (1964).

Peters, L., Jr., J 69D2-458, 231 (1965).

Peters, L. Jr., Lee, W. C. Y., Walters, C. H., J 69D2-

457, 227 (1965); J 69D3-470, 349 (1965). Petersen, G. F., Cathcart, J. V., (1964) M256, p. 201. Petersen, J. D., Wacker, P. F., Mizushima, M., Ballard,

J. R., (1964) Mono.70, Vol. I. Peterson, A. E., 4729; 5910. Peterson, C. F., Barghausen, A. F., 4217. Peterson, C. F., Norton, K. A., Herbstreit, J. W., James, H. B., Hornberg, K. 0., Barghausen, A. F., Johnson, W. E., Wells, P. I., Thompson, M. C,

Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33.

Peterson, R. L., 5995; 6718; 9112. Peterson, V. L., Stonehocker, G. H., Wright, J. W., 6627. Petersens, 0., Sze, W. C., Harris, F. K., Kusters, N. L., Moore, W. J. M., 5913. Petley, B. W., Bussey, H. E., Gray, J. E., Bamberger,

E. C, Rushton, E., Russell, G., Morris, D., 6149. Petlock, J. D., Hargreaves, J. K., Chivers, H. J. A., 5889. Petree, B., Humphreys, J. C., 5764; 9082. Petree, B., Ward, G., (1962) TN163.

Petrick, M., Smith, R. V., Isbin, H. S., Fauske, H. K., Robbins, C. H., Zuludek, F. R., 5981.

Petrie, H. E., Koch, J. W., J 66D2-183, 159 (1962).

Pettengill, G., J 68D9-403, 1025 (1964); J 69D12-609,

1617 (1965); J 69D12-612, 1627 (1965). Peyron, M., Broida, H. P., 3527. Peyser, P., Hoeve, C. A. J., DiMarzio, E. A., 6586.

Pfeffer, H., Roller, H. R., Marden, E. C., 3227.

Pfister, W., Ulwick, J. C, J 69D9-555, 1219 (1965).

Pfleger, J., Schmidt-Rohr, U., Speigel, V., Turek, P., Zuckschwerdt, W., 5364. Phelna, R., Arp, V. D., Kropschot, R. H., Wilson, J. H., Love, W. F., 4331.

Phillips, C. W., 5096.

Phillips, C. W., Achenbach, P. R., 3229; 5439A.

Phillips, C. W., Achenbach, P. R., Drapeau, F. J. J., 3532; 4322; 4637.

Phillips, C. W., Achenbach, P. R., Goddard, W. F., 3570.

Phillips, C. W., Achenbach, P. R., Penney, R. W., 6859.

Phillips, C. W., Achenbach, P. R., Smith, W. T., 6111A.

Phillips, C. W., Goddard, W. F., Jr., Achenbach, P. R., 3394.

Phillips, C. W., Goddard, W. F., Jr., Achenbach, P. R., Johnson, H. D., Penney, R. W., 3395.

Piccirelli ./. H., Furukawa, G. T., Reilly, M. L., J 68A4-

286, 381 (1964); J 68A6-314, 651 (1964).

Piccirelli, J. H., Furukawa, G. T., Reilly, M. L., Tenen- baum, M., J 68A4-285, 367 (1964).

Piccirelli, R. A., Green, M. S., 5736.

Piccirelli, R. A., Jackson, J. L., Levine, D. B., 4841. Piefke, G., J 64D6-92, 533 (1960).

Pierce, E. T., J 64D4-71, 383 (1960); J 65D6-158, 543

(1961); J 67D5-284, 525 (1963).

Pierce, E. T., Arnold, H. R., J 68D7-374, 771 (1964).

Pierce, E. T., Dennis, A. S., J 68D7-375, 777 (1964).

Pierce, E. T., Schmidt, V. A., Edelman, S., Smith, E.

R., 4779. Pierce, J. R., Cutler, C. C, J 68D5-365, 673 (1964). Piermarini, G. J., 5388. Piermarini, G. J., Block, S., J 67A1-193, 37 (1963);

5609; 5905. Piermarini, G. J., Block, S., Molin, J., 5863. Piermarini, G. J., Block, S., Weir, C. E., 6779. Piermarini, G. J., Weir, C. E., J 66A4-167, 325 (1962) ; J 68A1-258, 105 (1964); 4681; 5907. 451
Piermarini, G. J., Weir, C. E., Block, S., J 69C4-208, 275

(1965).

Piggott, W. R., Shapley, A. H., 5014. Pike, J. L., Bagg, T. C, 5039. Pike, R. G., Hubbard, D., Newman, E. S., 3448.

Pike, R. G., Hunt, C. M., Tomes, L. A., Hubbard, D., 4591; 4594. Pipberger, H. V., Arms, R. J., Stallmann, F. W., 3982. Pipberger, H. V., Fries, E. D., Taback, L., Mason, H.

L., 3722. Pipberger, H. V., Taback, L., Marden, E. C., Mason,

H. L., 3182. Pipp, R. M., Webster, J. B., J 68D3-350, 333 (1964).

Pirog, J. A., Laufer, A. H., McNesby, J. R., 6717. Pirog, J. A., McNesby, J. R., 9130. Pitteway, M. L. V., Cohen, R., 3955.

Pitts, J. W., J 67C2-124, 111 (1963); 3601; 5100.

Pitts, J. W., Moore, D. G., (1961) Mono.26; 1041B.

Pitts, J. W., Moore, D. G., Harrison, W. N., 951A.

Pizer, R. S., Roberts, A. G., 2109A.

Placious, R. C., Motz, J. W., 3451; 5441; 6172. Placious, R. C., Motz, J. W., Dick, C. E., 5270. Plante, E. R., Carrera, N. J., Walker, R. F., J 68A3-

280, 325 (1964).

Plante, E. R., Schreyer, C. H., J 70A3-401, 253 (1966).

Plante, E. R., Szwarc, R., J 70A2-393, 175 (1966).

Plante, E. R., Szwarc, R., Diamond, J. J„ J 69A5-363,

417 (1965).

Plitt, K. F., 3370.

Plitt, K. F., Dunlap, L. A., 3373; 3408.

Plitt, K. F., Toner, S. M., 3952; 4930. Plodge, E. J., Gniewek, J., J 69C3-203, 225 (1965).

Plotkin, H. H., Alley, C. 0., Bender, P. L., Dicke, R. H.,

Faller, J. E., Wilkinson, D. T., 8927. Plourde, A. J., (1963) M248, p. 103. Plum, N. M., Bredsdorff, P., Idorn, G. M., Kjaer, A., Poulsen, E., (1962) Paper VI-1, Mono.43, Vol. II, p. 749. Plumb, H. H., Ambler, E., 3897. Plumb, H. H., Cataland, G. H., J 69A4-358, 375 (1965) ; J 69A6-375, 531 (1965); J 70A3-400, 243 (1966);

4465; 4472; 6580. Plumb, H. H., Cataland, G. H., Edlow, M. H., 4146;

4885; 4990. Plumb, H. H., Edlow, M. H., 4277; 4900. Plumb, H. H., Edlow, M. H., Cataland, G. H., 3861. Plush, R. W., Watt, A. D., 3627. Plush, R. W., Watt, A. D., Brown, W. W., Morgan, A.

H., J 65D6-164, 617 (1961). Plush, R. W., Watt, A. D., Florman, E. F., 3388.

Plyler, E. K., J 64A5-62, 377 (1960) ; 4264; 5044.

Plyler, E. K., Agar, D., Tidwell, E. D., J 66A3-161,

259 (1962).

Plyler, E. K., Allen, H. C, Jr., 3203.

Plyler, E. K., Benedict, W. S., Tidwell, E. D., 3909.

Plyler, E. K., Blaine, L. R., Benedict, W. S., J 66A3-

155, 223 (1962).

Plyler, E. K., Harrison, W. N., Richmond, J. C, Stair,

R., Skramstad, H. K., 4308.

Plyler, E. K., Hirshfeld, M. A., Jaffe, J. H., 5591.

Plyler, E. K., James, T. C, 6178.

Plyler, E. K., Lafferty, W. J., J 67A3-208, 225 (1963) ; 4781.

Plyler, E. K., Lafferty, W. J., Maki, A. G., 6113.

Plyler, E. K., Lafferty, W. J., Tidwell, E. D., 4695.

Plyler, E. K., Maki, A. G., J 66C3-104, 283 (1962);

4663.

Plyler, E. K., Maki, A. G., Thibault, R. J., J 67A3-207,

219 (1963) ; 4696; 6529.

Plyler, E. K., Maki, A. G., Tidwell, E. D., J 66A2-147,

163 (1962).

Plyler, E. K., Olson, W. B., Allen, H. C, Jr., J 67A1-

191, 27 (1963).

Plyler, E. K., Roa, K. N., de Vore, R. V., J 67A4-225, 351 (1963).

Plyler, E. K., Thibault, R. J., J 66A5-177, 435 (1962) ; J 67A3-209, 229 (1963).

Plyler, E. K., Thibault, R. J., Jaffe, J. H., J 67A2-198,

113 (1963).

Plyler, E. K., Thibault, R. J., Maki, A. G., 5216.

Plyler, E. K., Tidwell, E. D., 3863; 4682; 4697.

Plyler, E. K., Tidwell, E. £>., Benedict, W. S., 3910;

4467.

Plyler, E. K., Tidwell, E. D., Maki, A. K., J 68A1-255,

79 (1964).

Plyler, E. K., Tidwell, E. D., Wiggins, T. A., 5649.

Plyler, E. K., Wiggins, T. A., Tidwell, E. D., 4125.

Plyler, E. K., Yates, D. J. C, Gebbie, H. A., 5037. Poeverlein, H., J 65D5-152, 465 (1961).

Pohlit, W., Pruitt, J. S., 3906.

Pohlit, W., Pruitt, J. S., Allisy, A., Joyet, G., Tubiana,

M., Zupancic, C, J 66C2-91, 107 (1962). Pohrte, T., Warwick, C. S., McDonald, N., 3399. Poland, D. E., Green, J. W., Margrave, J. L., (1961) Mono.30.

Polk, C, Fitchen, F., J 66D3-199, 313 (1962).

Pollack, A. A., Pollack, G. L., 5901.

Pollack, D. K., Fischer, G. L., Roddick, B., Stevens, M. S., 4816. Pollack, G. L., 6477. Pollack, G. L., Broida, H. P., 5682; 5842.

Pollack, G. L., Farabaugh, E. N., 6670. Pollack, G. L., Pellam, J. R., 9136.

Pollack, G. L., Pollack, A. A., 5901. Pollack, J. B., Sagan, C, J 69D12-602, 1583 (1965); J 69D12-614, 1629 (1965). Polonsky, I., Davis, P. J., (1964) AMS55. p. 875. Pomerantz, M. A., Bailey, D. K., 3823; 8989. Pontius, P. E., (1966) TN288.

Pope, C. I., J 67C1-115, 15 (1963); J 67C3-134, 237

(1963). Pope, C. I., McCamy, C. S., 3 69A5-359, 385 (1965) ; (1965) TN261.

Pope, J. H., 4419; 5135; 5911; 6711. Pope, J. H., Carson, W. B., Koch, J. A., Gallet, R. M.,

6833. Pope, J. H., Ecklund, W. L., Hargreaves, J. K., 8919. Popenoe, C. H., Shumaker, J. B., Jr., J 69A6-370, 495

(1965).

Porter, T. L., 4506. Porter, T. L., Davis, S. P., 5395. Porter, T. L., Mann, D. E., Acquista, N., 6735. Posakony, D. J., Lawrence, R. S., 3926. Posakony, D. J., Lawrence, R. S., Garriott, O. K., Hall,

S. C, 5806. Posner, A. S., 911 A; 3852; 4776; 5128. Posner, A. S., Likins, R. C, Kunde, M. L., Craven, D.

L., 3161. Posner, A. S., Likins, R. C, McCann, H. G., 3477. Posner, A. S., Likins, R. C, Paretzkin, B., Frost, A. P., 4046

Posner, A. S., Mandelkern, L., Diorio, A. F., Roberts, D. E., 4153. Posner, A. S., Mandelkern, L., Halpin, J. C, Diorio, A. F., 4588. Posner, A. S., Mandelkern, L., Roberts, D. E., Diorio, A. F., 3183. Posner, A. S., Mandelkern, L., Worthington, C. R., Diorio, A. F., 3606. Posner, A. S., Moss, M. L., 3918. Posner, A. S., Perloff, A., 3490. Posner, A. S., Stutman, J. M., Lippincott, E. R., 3571. Pottasch, S. R., 3447; 3831; 3899. Pottasch, S. R., Thomas, R. N., 3887.

Potter, A., Moore, D. G., (1962) Mono.44.

Potter, R. F., Wasilik, J. H., Flippen, R. B., 3632. 452
Poulsen, E., Bredsdorff, P., Morn, G. M., Kjaer, A., Plum, X. M., (1962) Paper VI-1, Mono.43, Vol. II, p. 749. Powell, C. J., 6692. Powell, C. J., Swanson, N., 5345. Powell, F. J., 4994; 5260. Powell, F. J., Robinson, H. E., 4168; 4749. Powell, F. X., Lide, D. R., 6213; 6791. Powell, R. C, (1963) M248, p. 45; (1965) TN262-A.

Powell, R. C, Rasmussen, A. L., 3393; 4424. Powell, R. C, Wildhack, W. A., Mason, H. L., (1965) TN262.

Powell, R. L., 5815; 6834A.

Powell, R. L., Bunch, M. D., Caywood, L. P., Jr., 4155. Pewell, R. L., Bunch, M. D., Corruccini, R. J., 4156. Powell, R. L., Bunch, M. D., Gibson, E. F., 3616. Powell, R. L., Caywood, L. P., Jr., 4733. Powell, R. L., Caywood, L. P., Jr., Bunch, M. D., 4735. Powell, R. L., Gniewek, J. J., 4974. Powell, R. L., Hall, W. J., Roder, H. M., 3615. Powell. R. L., Harden, J. L., Gibson, E. F., 3617. Powell, R. L., Roder, H. M., Hall, W. J., 3245. Powers, J., VanValkenberg, A., 5547; 6298. Powers, J., Hoffman, J. D., Weeks, J. J., Quinn, F. A.,

Jr., J 69A4-353, 335 (1965). Powers, J., Quinn, F. A., Jr., 5465. Powers, T. C, (1962) Paper V-l, Mono.43, Vol. II, p. 577. Prasad, S., King, R. W. P., J 65D5-150, 449 (1961). Prather, J. L., (1961) Mono.19.

Prats, F., Cooper, J. W., Fano, U., 5235. Prats, F., Fano, U., 5474; 5530; 6206. Prats, F., Fano, U., Goldsmith, Z., 5415. Prausnitz, J. M., (1965) TN316; 5818. Prausnitz, J. M., Eckert, C. A., 6401. Prausnitz, J. M., Myers, A. L., 5434; 9114. Prausnitz, J. M., Orentlicher, M., 6505. Preston, C. C, Case, W. E., (1963) TN173.

Price, A. T., J 69D8-547, 1161 (1965).

Price, D. J. D., (1965) M269, p. 187. Price, F. P., Mandelkern, L., Roberts, D. E., Halpin,

Price', G.'h., J68D4-356, 407 (1964).

Price, R., J 64D6, 678 (1960). Probert, W. H., Arnett, R. W., Millhiser, D. R., 5346. Prosen, E. J., Johnson, W. H., Gilliland, A. A., J 64A6-

74, 515 (1960). Prosen, E. J., Johnson, W. H., Jaffe, I., J 65A2-86, 71 (1961); J 65A5-124, 435 (1961). Prosen, E. J., Johnson, W. H., Kilday, M. V., J 64A6-75,

521 (1960); J 65A3-104, 215 (1961). Prosen, E. J., Johnson, W. H., Schumm, R. H., Wilson,

I. H., J 65A2-90, 97 (1961). Prosen, E. J., Kilday, M. V., J 68A1-261, 127 (1964) ; 3563A.

Prosen, E. J., Kilday, M. V., Johnson, W. H., J 65A2-

92, 101 (1961). Prosen, E. J., Kilday, M. V., Johnson, W. H., J 65A5-

124, 435 (1961). Prue, J. E., Bates, R. G., Bower, V. E., Canham, R. G., 3333.

Pruitt, J. S., 3363 ; 6112.

Pruitt, J. S., Allisy, A., Joyet, G., Pohlit, W., Tubiana,

M., Zupancic, C, J 66C2-91, 107 (1962).

Pruitt, J. S., Domen, S. R., J 66A5-172, 371 (1962) ; J 68A6-319, 703 (1964); (1962) Mono.48.

Pruitt, J. S., Koch, H. W., 5283.

Pruitt, J. S., Pohlit, W., 3906. Pyati, V. P., Weil, H., J 69D2-466, 291 (1965). Pryce, M. H. L., Eisenstein, J. C, J 69A2-341, 217

(1965) ; J 70A2-392, 165 (1966) ; 3884. Pummer, W. J., Wall, L. A., J 68A3-274, 277 (1964); J 70A3-399, 233 (1966); 4242; 5544. Pummer, W. J., Wall, L. A., Donadio, R. E., 3721.

Pummer, W. J., Wall, L. A., Fearn, J. E., Antonucci,

J. M., J 67A5-237, 481 (1963). Pummer, W. J., Wall, L. A., Fearn, J. E., Lowry, R. E., J 65A3-107, 239 (1961).

Purcell, L. D., Malitson, H. H., Tousey, R., Moore,

C. E., 3867.

Purcell, J. R., 4478.

Purcell, J. R., Jacobs, R. B., 5831.

Purcell, J. R., Keeler, R. N., 3760.

Purcell, J. R., Payne, E. G., 4330; 5383.

Purcell, J. R., Schmidt, A. F., Jacobs, R. B., 3880.

Purcell, J. R., Schmidt, A. F., Wilson, W. A., Smith,

R. V., J 65C2-58, 81 (1961) ; 3970. Purdy, C. M., Megill, L. R., Roach, F. E., J 65C4-73, 213 (1961). Purdy, C. M., Roach, F. E., McCaulley, J. W., Marovich, E., 3374. Q

Quasius, A. R., Stromberg, R. R., Lee, W. M., 3233. Quasius, A. R., Stromberg, R. R., Lee, W. M., Newman,

S. B., Reinhart, F. W., 3151. Quick, G. W., Bennett, J. A., 1404A.

Quidort, J., Barloutaud, M., Caswell, R. S., Gastebois,

J., de Pinho, A. G., 6334. Quinn, E. L., Mohler, F. L., J 65A2-89, 93 (1961). Quinn, F. A., Jr., Mandelkern, L., 983A.

Quinn, F. A., Jr., Powers, J., 5465.

Qtiinn, F. A., Jr., Powers, J., Hoffman, J. D., Weeks,

J. J., J 69A4-353, 335 (1965). R

Rahinovitch, K., Canfield, L. R., Madden, R. P., 6550. Rabinow, J., 874B.

Rabinowitz, P., Davis, P. J., 3778; 3964; 4297. Raddick, B., Fischer, G. L., Pollack, D. K., Stevens, M.

S., 4816. Radebaugh, R., Brennan, J. A., Wilson, W. A., 4977. Radebaugh, R., Brennan, J. A., Wilson, W. A., Bir- mingham, B. W., 4342. Rademacher, H., 6378. Radford, H. E., 3278; 4180; 4361; 4773; 4826; 5730;

6014; 6122; 6416. Radford, H. E., Barger, R. L., Broida, H. P., Estin, A. J., 4818. Radford, H. E., Broida, H. P., 4903; 5231. Radford, H. E., Evanson, K. M., 6742. Radford, H. E., Hudson, R. P., Kaeser, R. S., 3613. Radford, H. E., Hughes, V. W., 3261. Radford, H. E., Linzer, M., 5621. Radford, H. E., Rice, F. O., 3561.

Radicella, S., Chilton, C. J., Diede, A., 6510. Raemer, H. R., J 65D6-162, 581 (1961). Rafase, R., J 68D5 365, 661 (1964). Ramaley, D., J 64C4-44, 267 (1960) ; (1963) TN172,

(1964) TN220; 5938. Randall, E. B., Jr., 6147. Randal!, E. B., Jr., Mandel, J., 4443. Randall, E. B., Jr., Mann, C. W., Mandel, J., Kilduff,

T. J., Charles, A. M., 342A.

Randall, M. W., Arthur, M. G., (1962) TN160.

Rankin, B. K., Ill, Sillars, W. A., Hsu, R. W., (1965) TN254.

Ransil, B. J., Krauss, M., 3773A.

Rao, K. N., de Vore, R. V., Plyler, E. K., J 67A4-225,

351 (1963). Rasberry, S. D., Mulligan, B. W., Caul, H. J., Scribner, B. F., J 68A1-251, 5 (1964). Raskin, W. H., Robertson, A. F., 946A. Rasmussen, A. L., J 69A2-239, 181 (1965) ; J 70C1-217,

19 (1966). Rasmtissen, A. L., Hoer, C. A., J 67C1-121, 69 (1963). 453
Rasmussen, A. L., Powell, R. C, 3393; 4424. Raso, D. J., Berger, M. J., 3654. Rastogi, R. G., J 66D5-220, 601 (1962) ; 4993. Rath, H. L., Crombie, D. D., 6349. Rauth, A. M., Simpson, J. A., 6445. Rawer, K., J 66D4-202, 375 (1962). Ray, D., 1099A.

Raybold, R. L., 3519. Raybold, R. L., Barman, G. G., 4169. Raybold, R. L., Harman, G. G., Meyer, 0. L., 5296. Reader, J., Sugar, J., 6814; 6894; 6895. Rebbert, R. E., 5593. Rebbert, R. E., Ausloos, P., 4183; 4711; 5032; 5253;

5424; 5787; 6286; 6472; 6513; 8967; 8968. Rebbert, R. E., Ausloos, P., Lias, S. G., 6696. Rebbert, R. E., Burkley, I. B., 5788. Rebbert, R. E., Sanders, W. A., 5789. Rebbert, R. E., Slagg, N., 4858. Reber, M. J., 6301. Redd, J., Carpenter, F. G., 4507. Reddy, A. K. N., Bockris, J., O'M., (1964) M256, p. 229. Reder, F. H., Abom, C. J., Winkler, G. M. R., J 68D3-

342, 275 (1964).

Redherffer, R. M., Wasow, W., 1430A.

Reed, R. P., 4420; 5050. Reed, R. P., Guntner, C. J., 4173; 4740; 4992; 6406. Reed, R. P., Miksell, R. P., 6590. Reed, R. P., Mikesell, R. P., Greeson, R. L., 3775. Reed, R. P., Warren, K. A., (1963) Mono.63.

Reed, S. G., Herzfeld, C. M., 3883. Rees, M. H., 3126; 3127; 5140. Rees, M. H., Campbell, W. H., 3950. Rees, M. H., Megill, L., Droppleman, L. K., 5317. Rees, M. H., Megill, L. R., Marovich, E., Droppleman,

L. K., Davies, R., Cruz, J. E., Reisbeck, L., Roach,

F. E., (1965) TN308.

Rees, M. H., Roach, F. E., 3811. Reese, R. M., 4741. Reese, R. M., Dibeler, V. H., J 68A4-289, 409 (1964);

3625; 6193. Reese, R. M., Dibeler, V. H., Franklin, J. L., 4162. Reese, R. M., Dibeler, V. H., Krauss, M., Harllee, F. N., 6843; 6845. Reese, R. M., Harllee, F. N., 6196. Reeves, E. M., Nicholls, R. W., Bromley, D. A., 3207. Reeves, R. B., Mauer, F. A., Keffer, C J., Robinson, D. W., 8946. Reichard, T. W., (1964) Mono.74.

Reid, G. C, J 69D6-515, 827 (1965) ; 5873; 6289; 6434. Reid, G. C, Bailey, D. K., Leinbach, H., 6253. Reid, G. C, Little, C. G., Stiltner, E. C, Merritt, R. P., 4484. Reid, M. A., Lloyd, J. A., 5514; 5526. Reid, W. E., Jr., 4360; 9016; 9017. Reid, W. E., Jr., Kruger, J., 6272. Reid, W. E., Jr., Lamb, V. A., 3526.

Reid, W. E., Jr., Ogburn, F., 3813. Reid, W. E., Jr., Stern, K. H., 6022.

Reilly, M. L., Furukawa, G. T., J 69A1-321, 5 (1965).

Reilly, M. L., Furukawa, G. T., Piccirelli, J. H., J 68A4-

286. 381 (1964); J 68A6-314, 651 (1964).

Reilly, M. L., Furukawa, G. T., Piccirelli, J. H., Tenen- baum, M., J 68A4-285, 367 (1964).

Reilly, M. L., Furukawa, G. T., Saba, W. G., 6018.

Reilly, M. L., McCoskey, R. E., Furukawa, G. T., 775A. Reimann, C. W., Gordon, C, 9021. Reimann, C. W'., Kokoszka, G. F., Allen, H. C, Jr., J 70A1-380, 1, (1966). Reimherr, G. W., (1961) TN90 (PB161591) ; (1962) TN153: (1964) TN247.

Reinboldt, W. C, Menard, J. P., 3635. Reiner, L, Newman, M., 3231. Reinhart, F. M., 4396. Reinhart, F. M., Ailor, W. H., Jr., 5731.

Reinhart, F. M., Gerhold, W. F., 4944. Reinhart, F W., 3789; 3790; 4068; 4086; 4151; 4231;

4309; 4940.

Reinhai-t, F. W., Stromberg, R. R., Lee, W. M., Quasius, A. R., Newman, S. B., 3151. Reisbeck, L., Rees, M. H., Megill, L. R., Marovich, E., Droppleman, L. K., Davies, R., Cruz, J. E., Roach,

F. E., (1965) TN308.

Reismann, H., Morgenthaler, G. W., J 67B3-102, 181

(1963). Remmler, O. D., (1962) TN127.

Remmler, 0. D., Goerke, V. H., (1964) TN230.

Reynard, P., Hertelendy, P., 6507. Reynolds, M. M., Corruccini, R. J., Fulk, M. M., Burley,

R. M., 5626. Rheinboldt, W., 1978A; 1978B.

Rheinboldt, W., Kantorovich, L. V., Greub, W., 3269. Rhodes, I., 3934; 4364; 5721; 5774. Rhodes, I., Alt, F. L., J 66B2-71, 47 (1962) ; 4266A.

Rhodes, S. W., Hasegawa, S., Hyland, R. W., 6542.

Rice, F. 0., Gager, W. B., 3279.

Rice, F. O., Radford, H. E., 3651.

Rice, J. R., J 64B3-32, 151 (1960); J 64B4-38, 227

(1960) ; 3462; 3986; 4337; 4970.

Rice, P. L., 3893.

Rice, P. L., Barsis, A. P., Norton, K. A., Elder, P. H., (1961) TN102 (PB161603); 4853; 4854; 5585.

Rice, P. L., Herbstreit, J. W., 6514.

Rice, P. L., Kirby, R. S., Moloney, L. J., (1961) TN95

(PB161596).

Rice, P. L., Longley, A. G., Norton, K. A., Barsis, A.

P., (1965) TN101, Vols. 1 and 2. Rice, P. L., Pappas, C. F., Vogler, L. E., J 65D2-116,

175 (1961).

Rice, S. A., Kirkwood, J. G., Ross, J., Zwanzig, R. W.,

3315. Richards, R. J., Burgeson, D. A., Pestalozzi, W. G., 6469. Richards, R. J., Edmonds, K., Jacobs, R. B., 4676. Richards, R. J., Smith, R. V., Edmonds, D. K., Brentari, E. G., 5917. Richards, R. J., Steward, W. G., Jacobs, R. B., (1961) TN122 (PB161623) ; 3890. Richardson, A. C. B., 3610. Richardson, A. C. B., Costrell, L., 5838. Richardson, A. C. B., Schwartz, R. B., 5933. Richardson, A. C. B., Spiegel, V., Jr., 3965. Richardson, E. A., Stern, K. H., 3842. Richardson, J. M., J 68D1, 135 (1964); 3645; 3658;

4938; 4998; 5086. Richardson, J. M., Beehler, R. E., Mockler, R. C, 6626. Richardson, J. M., Beehler, R. E., Mockler, R C, Fey,

R. L., 4501. Richardson, J. M., Brockman, J. F., 6487. Richardson, J. M., Culshaw, W., Kerns, D. M., 3719A.

Richardson, J. M., Faris, J. J., 4079. Richardson, J. M., Gallet, R. M., Wider, B., Ward, G.

D., Harding, G. N., 3649. Richardson, J. M., Mockler, R. C, 6374. Richardson, J. M., Ward, G. D., J 67C2-127, 139 (1963). Richardson, S. C, (1963) M248, p. 131. Richardson, S. C, Barnhart, H. D., (1963) M248, p. 153. Richey, G., G., Mandel, J., Stiehler, R. D., 3131. Richey, G. G., Stiehler, R. D., Steel, N., Mandel, J., Hobbs, R. H., 3283. Richmond, J. C, J 67C3-132, 217 (1963); 3125; 3158;

3470; 3641; 4596; 4839; 5306; 6790. Richmond, J. C, DeWitt, D. P., Hayes, W. D., Jr., (1964) TN252.

Richmond, J. C, Dunn, S. T., DeWitt, D. P., Hayes, W. D., Jr., (1966) TN267.

Richmond, J. C, Dunn, S. T., Wiebelt, J. A., J 70C2-

221, 75 (1966). 454
Richmond, J. C, Harrison, W. N., J 66C3-102, 261

(1962) ; 3205A; 3533. Richmond, J. C, Harrison, W. N., Plyler, E. K., Stair,

R., Skramstad, H. A'., 4308. Richmond, J. C, Harrison, W. N., Shorten, F. J., 5192. Richmond, J. C, Harrison, W. N., Skramstad, H. K., 4935. Richmond, J. C, Kirkpatrick, H. B., Harrison, W. N., 929A. Richmond, J. C, Kirkpatrick, H. B., McGandy, E. L., 2302A. Richmond, M. S., (1965) M260-8.

Riddick, J. A., Fritz, J. S., Davis, M. M., Hillenbrand,

E. F., Jr., Markunas, P. C, 604A.

Riddle, J. L., 4545; 5726. Rickcr, J., J 67D2-249, 119 (1963).

Ries, F. X., 5384. Riggs, L. P., Bean, B. R., Horn, J. D., (1962) TN98;

3747. Riggs, L. P., Cahoon, B. A., 5949.

Rileu, J. C, White, L. A., (1963) M248, p. 195. Rio, A., Turriziani, R., (1962) Paper VIII-S4, Mono.-

43, Vol. II, p. 1067. Rippy, D. E., Humphries, D. C, 6840. Rishbeth, H., 5894. Rishbeth, H., Calvert, M., VanZandt, T. E., 5908; 6406A.

Rishbeth, H., Garriott, O. K., J 68D3-351, 339 (1964). Rishbeth, H., Knecht, R. W., VanZandt, T. E., 6250. Rishbeth, H., Megill, L. R., 9075.

Risley, A. S., Bussey, H. E., 6068.

Ritter, J. J., Coyle, T. D., Farrar, T. C, 6308.

Ritz, V. H., 3176. Roach, F. E., 2058A; 3419A; 3744A; 3840; 4406; 4774; 5181; 5504; 5564; 5735; 5777; 6457. Roach, F. E., Barbier, D., Duncan, R. A., 4797. Roach, F. E., Barbier, D., Steiger, W. R., J 66D2-181,

145 (1962). Roach, F. E., King, G. A. M., J 65D2-110, 129 (1961). Roach, F. E., Marovich, E., 5302. Roach, F. E., McCaulley, J. W., Marovich, E., Purdy,

C. M., 3374. Roach, F. E., McCaulley, J. W., Matsushita, S., 3404. Roach, F. E., Megill, L. R., (1961) TN106 (PB161607) ; 3582A; 4126. Roach, F. E., Moore, J. G., Bruner, E. D., Jr., Cronin,

H., Silverman, S. M., 3836. Roach, F. E., O'Brien, B. J., Van Allen, J. A., Gartlein,

C. W., 3486; 4018. Roach, F. E., Purdy, C. M., Megill, L. R., J 65C4-73, 213 (1961). Roach, F. E., Rees, M. H., 3811. Roach, F. E., Reisbeck, L., Rees, M. H., Megill, L. R., Marovich, E., Droppleman, L. K., Davies, R., Cruz,

J. E., (1965) TN308.

Roach, F. E., Roach, J. R., 5687. Roach, F. E., Smith, L. L., (1964) TN214.

Roach, F. E., Smith, L. L., Owen, R. W., 9058. Roach, F. E., Tohomatsu, T., 5022. Roach, J. R., J 67D3-261, 263 (1963). Roach, J. R., Roach, F. E., 5687. Robbins, C. H., Smith, R. V., Isbin, H. S., Fauske, H.

K., Petrick, M., Zuludek, F. R., 5981. Robbins, C. R., 3822. Robbins, C. R., Fang, P. H., Aurivillius, B., 4654. Robbins, C. R., Levin, E. M., J 65A2-95, 127 (1961). Robbins, C. R., Levin, E. M., McMurdie, H. F., 6282. Robbins, C. R., Levin, E. M., Waring, J. L., 4114. Robbins, C. R., Yoder, H. S., Jr., 5688. Robbins, D., (1964) TN237; (1964) TN253.

Robbins, D., Englert, A. J., (1965) TN263; (1966) TN287.

Robbins, R. F., Ludtke, P. R., 6350. Robbins, R. F., Ohori, Y., Weitzel, D. H., 5U7.

Robbins, R. F., Weitzel, D. H., Bopp, G. R., Bjorklund, W. R., 3614; 4054. Robbins, R. F., Weitzel, D. H., Herring, R. N., 4980. Robbins, R. F., Weitzel, D. H., Ludtke, P. R., 5983. Roberts, A. E., Gornick, F., Mandelkern, L., Diorio, A. F., 6054. Roberts, A. G., 3574. Roberts, A. G., Pizer, R. S., 2109A.

Roberts, D. E., Cassel, J. M., Mandiekern, L., 5016. Roberts, D. E., Mandelkern, L., 3848; 4349. Roberts, D. E., Mandelkern, L., Diorio, A. F., Posner, A. S., 3183. Roberts, D. E., Mandelkern, L., Halpin, J. C, Price, F. P., 3553. Roberts, D. E., Mandelkern, L., Posner, A. S., Diorio, A. F., 4153. Roberts, J., Eldred, R. A., Lasitter, H. A., J 68D10-414,

1145 (1964). Roberts, J. A., J 60D12-587, 1543 (1965). Roberts, S., (1964) M256, p. 119. Roberts, T. R., Sherman, R. H., Sydoriak, S. G., J 68A6-303, 567 (1964); J 68A6-304, 579 (1964). Roberts, T. R., Sydoriak, S. G., Sherman, R. H., J 68A6-

302, 559 (1964). Roberts, W. H., Ogburn, F., 4365. Roberts, W. H., Ogburn, F., Ernst, D. W., 3341. Robertson, A. F., 3211; 4511; 4960; 6750. Robertson, A. F., Lee, T. G., 4052. Robertson, A. F., Loftus, J. J., Gross, £>., 4237. Robertson, A. F., Raskin, W. H., 946A.

Robinson, C. C, Hord, J., Jacobs, R. B., Sparks, L. L., 6235. Robinson, D. W., Mauer, F. A., Keffer, C. J., Reeves,

R. B., 8946. Robinson, E. J., Hall, J. L., Branscomb, L. M., 6825. Robinson, H. E., 4792; 4988. Robinson, H. E., Powell, F. J., 4168. Robinson, H. E., Watson, T. W., 4387. Robinson, R. A., J 68A2-264, 159 (1964). Robinson, R. A., Allen, G. F., Bower, V. E., 5013.

Robi?ison, R. A., Bates, R. G., 4709. Robinson, R. A., Bates, R. G., Paabo, M., 5423. Robinson, R. A., Bower, V. E., J 69A1-323, 19 (1965) ; J 69A2-334, 131 (1965); J 69A4-356, 365 (1965); J 60A5-365, 439 (1965); 3843; 4358; 5432; 5551;

5805; 8929. Robinson, R. A., Bower, V. E., Bates, R. G., J 66A1-

142, 71 (1962). Robinson, R. A., Davis, M. M., Paabo, M., Bower, V. E., J 64A4-57, 347 (1960). Robinson, R. A., Gary, R., 6392. Robinson, R. A., Gary, R., Bates, R. G., 6360; 6506;

6704. Robinson, R. A., Hetzer, H. B., Bates, R. G., 4600;

4936; 5299; 6504.

Robinsoji, R. A., Ong, K. C, Bates, R. G., 6155. Robinson, R. A., Paabo, M., 5799. Robinson, R. A., Paabo, M., Bates, R. G., J 67A6-242,

573 (1963); 6390; 6705; 8987; 9036. Robinson, R. A., Paabo, M., Davis, M. M., J 64A6-77,

531 (1960). Robinson, R. A., Peiperl, A., 5765; 5766. Robinson, R. A., Sager, E. E., Bates, R. G., J 68A3-277,

305 (1964). Robinson, R. A., Woodhead, M., Paabo, M., Bates, R.

G. , J 69A3-345, 263 (1965); 6617. Robusto, T., Jr., Mordfin, L., 4833. Rock, S. M., Shepherd, M., Howard, R., Stormes, J., 251B. Roder, H. M., J 69A6-374, 527 (1965) ; 5058. Roder, H. M., Diller, D. E., Weber, L. A., Goodwin, R.

D., 5779. Roder, H. M., Goodwin, R. D., (1961) TN130 (PB161-

631) ; 5590. 455
Roder, H. M., Goodwin, R. D., Diller, D. E., Hall, W.

J., Weber, L. A., Younglove, B. A., 6414. Roder, H. M., Goodwin, R. D., Diller, D. E., Weber,

L. A., J 67A2-204, 173 (1963); J 68A1-260, 121

(1964) ; 4347. Roder, H. M., Hall, W. J., Powell, R. L., 3615. Roder, H. M., Powell, R. L., Hall, W. J., 3245. Roder, H. M., Stewart, R. B., 6317

Roder, H. M., Weber, L. A., Diller, D. E., Goodwin, R.

D., 5067. Roder, H. M., Weber, L. A., Goodwin, R. D., (1965) Mono.94; 5742. Rodgers, J. W., Jr., (1963) M248, p. 233. Rodriguez, M. S., Bowen, R. L., 4975. Rodriguez, M. S., Dickson, G., 4928. Rogers, G. J., 8960. Rogers, G. J., Rubin, S., (1964) TN233.

Rogers, G. J., Shapiro, G., 6841. Rogers, G. J., Shapiro, G., Laug, O. B., Fulcomer, P. M., Jr., (1964) Mono.83; 6314. Rogers, J. H., 6512. Rogosa, G. L., Koch, H. W., Donnert, H. J., Havens, W. W., Jr., Rosen, L., (1966) TN283.

Rohlfs D. C., Davis, J. R., Skaggs, G. A., Joss, J. W., J 69D12-619, 1659 (1965). Rohrlich, F., 3143; 3350. Rohrlich, F., Johnson, H. R., 3264. Rohrlich, F., Pecker, C., 5389. Romain, J. E., J 66B3-78, 97 (1962). Romanoff, M., J 66C3-99, 223 (1962) ; (1962) Mono.58;

6066; 8999. Romanoff, M., Logan, H. L., McBee, M. J., 5705. Rootare, H. M., Deitz, V. R., 3295. Rootare, H. M., Deitz, V. R., Carpenter, F. G., 4293; 4571; 4914; 6485. Roper, TV. J., Merrill, R. G., Lawrence, R. S., 5720. Rosaman, D., Midgley, H. G., (1962) Paper III-S2, Mono.43, Vol. I, p. 259. Rosaman, D., Midgley, H. G., Fletcher, K. E., (1962) Paper II-S2, Mono.43, Vol. I, p. 69. Rosberry, F. W., 4167; 9089. Rose, A., Sweeney, R. F., Hoover, T. B., Schrodt, V. TV., 3540A.

Rose, F. C., Cornog, D. Y., Walkowicz, J. L., (1964) M262-1.

Rose, F. L., Millman, G. H., J 67D2-248, 107 (1963). Rose, J. C., Freis, E. D., Broida, H. P., Hufnagel, C. A., 1329A.

Rosen, L., Koch, H. W., Donnert, H. J., Havens, W.

W., Jr., Rogosa, G. L., (1966) TN283.

Rosenberg, TV. W., Edwards, H. D., Wright, J. W.,

6164. Rosenberg, TV. W., Golomb, D., Wright, J. W., Barnes,

R. A., 6078. Rosenberg, TV. W., Wright, J. W., Golomb, D., Barnes,

J. A., 6079. Rosenberg, S. J., 3920. Rosenberg, S. J., Carwile, TV. L., Meyerson, M. R., 3976. Rosenberg, S. J., Digges, T. G., (1960) Mono.18. Rosenberg, S. J., Irish, C. R., 4943. Rosenberg, S. J., Johnson, C. R., 4546. Rosenberg, S. J., Meyerson, M. R., 4024. Rosenberg, S. J., Royston, T. P., 3946. Rosenblatt, D., J 67B4-107, 249 (1963); 4951; 6588. Rosenblatt, J. R., 3271; 3351; 3676; 3689; 3794; 5257. Rosenblatt, J. R., Nimeroff, I., Dannemiller, M. C,

J 65A6-129, 475 (1961) ; 5116. Rosenblatt, M., J 68D9-393, 933 (1964). Rosenstein, A. B., (1965) M267, p. 1. Rosenstock, H. M., 4200. Rosenstock, H. M., Dibeler, V. H., Harllee, F. TV., 6137. Rosenstock, H. M., Ferguson, R. E., McCulloh, K. E., 8905.

Rosenstock, H. M., Harllee, F. TV., Herron, J. T., (1966) TN291.

Rosenstock, H. M., Herron, J. T., Shields, W. R., 6882. Rosenstock, H. M., Krauss, M., 4561; 5608. Rosenstock, H. M., McCulloh, K. E., Sharp, T. E., 6698. Rosenstock, H. M., Sharp, T. E., 6087. Rosenstock, H. M., Vestal, M. L., 4210. Rosenthal, D., Bates, R. G., 5689. Rosenthal, D., Hetzer, H. B., Bates, R. G., 6356. Rosholt, J. TV., Butler, A. P., Garner, E. L., Shields, W. R., 6819. Rosholt, J. TV., Garner, E. L., Shields, W. R., 6084. Rosholt, J. TV., Harshman, E. TV., Shields, W. R., Garner, E. L., 6166. Rosholt, J. TV., Shields, W. R., Gamer, E. L., 5433. Ross, G. S., J 65C4-77, 245 (1961). Ross, G. S., Dixon, H. D., J 64C4-45, 271 (1960) ; J

67A3-212, 247 (1963). Ross, G. S., Dixon, H. D., Frolen, L., Termini, D. J., 5577. Ross, G. S., Enagonio, D., Hewitt, C. A., Glasgow, A.

R., J 66A1-140, 59 (1962). Ross, G. S., Frolen, L. J., J 67A6-247, 607 (1963). Ross, G. S., Glasgow, A. R., Jr., 5887. Ross, G. S., Saylor, C. P., J 68C1-150, 35 (1964). Ross, J., Mori, H., Oppenheim, I., 4929. Ross, J., Rice, S. A., Kirkwood, J. G., Zwanzig, R. W.,

3315. Ross, J. M., Kirch, J. E., J 65D4-143, 393 (1961). Rossmassler, S. A., Brady, E. L., 6220. Roth, F., George, D. A., Stone, P., 5580. Roth, F. L., Bullman, G. W., Wood, L. A., J 69A4-354,

347 (1965). Roth, F. L., Mandel, J., Steel, M. TV., Stiehler, R. D., 3249. Roth, F. L., Stiehler, R. D., 3312; 4535; 4554; 6659. Roth, R. S., 4220; 4221; 6283. Roth, R. S., Levin, E. M., J 68A2-268, 189 (1964); J 68A2-269, 197 (1964). Roth, R. S., Levin, E. M., Martin, J. B., 4234. Roth, R. S., Schneider, S. J., J 64A4-53, 309 (1960) ; J

64A4-54, 317 (1960) ; 3707. Roth, R. S., Schneider, S. J., Waring, J. L., J 65A4-116, 345 (1961). Roth, R. S., Waring, J. L., J 65A4-115, 337 (1961)

;

J 66A6-180, 451 (1962); J 69A2-333, 119 (1965);

5722; 6167; 6426. Roth, R. S., Waring, J. L., Levin, E. M., 6300. Rothbart, M., (1963) M248, p. 213. Rothen, A., (1964) M256, p. 7. Rothman, S., Weissberg, S. G., Wales, M., 4782. Rothrock, B. D., Young, T. R., J 67A2-199, 115 (1963). Roubique, C. J., Crichlow, W. Q., Spaulding, A. D., Disney, R. T., (1960) Mono.23.

Roubique, C. J., Spaulding, A. D., Crichlow, W. Q., J

66D6-231, 713 (1962). Rouse, G. F., 3349; 5109; 5861. Row, R. V., Galejs, J., J 68D1-322, 103 (1964). Rowland, W. R., Spangenberg, W. G., 3699; 4017. Roy, D., Rustum, R., (1962) Paper III-S9, Mono.43,

Vol. I, p. 307. Royak, S. M., Kholin, I. I., (1962) Paper VIII-S3, Mono.43, Vol. II, p. 1057. Royston, T. P., Rosenberg, S. J., 3946. Ruben, H., J 68B1-109, 3 (1964). Rubin, B., Hamer, W. J., Malmberg, M. S., 9110. Rubin, R. J., J 69B4-159, 301 (1965); 3793; 4313; 5522; 5494; 5865; 8980. Rubin, R. J., Herman, R., 3262 ; 3499. Rubin, R. J., Shuler, K. E., 3681. Rubin, R. J., Zwanzig, R. W., 3931. Rubin, S., 6119; 6361; 6394. Rubin, S., Rogers, G. J., (1964) TN233.

456
Rubin, V. C, Kiess, C. C, Moore, C. E., J 65A1-80, 1 (1961). Ruch, R. R., DeVoe, J. R., Meinke, W. W., 4258. Ruddock, K. A., Collett, L. S., Brant, A. A., Bell, W. E., Siegel, H. O., Wait, J. R., 3239A. Rudge, M. R., Geltman, S., Seaton, M. J., 5328. Rudolph, J. G., Cheng, D. K., J 69D9-562, 1271 (1965). Ruegg, F. C, 6878. Ruegg, F. C, Spijkerman, J. J., DeVoe, J. R., 6708. Ruegg, F. W., Dorsey, W. W., J 66C1-87, 51 (1962) ; 5836. Ruehrwein, R. A., Hashman, J. S., Edwards, J. W.,

3463.

Ruff, A. W., Jr., 4597; 4598; 6218; 6266.

Ruff, A. W., Jr., Kushner, L. M., 3288; 5527.

Ruff, A. W., Jr., Wilsdorf, H. G. F., 8904. Ruffa, A. R., J 69A2-338, 167 (1965) ; 5814; 6496. Ruffa, A. R., Griffing, V., 4870. Rumfelt, A. Y., Como, R. J., 3290. Rumsey, V. H., J 68D4-359, 438 (1964). Rundle, H. N., J 69C1-179, 5 (1965) ; 3591; 3687; 3894. Rundle, H. N., Chamberlain, J. W., Hunten, D. M.,

3753. Rusch, W. V. T., J 67D2-257, 203 (1963). Rush, S., J 66C3-98, 217 (1962). Rushmer, M. A., Burdick, M. D., (1966) BSS4; 6531;

6538. Rushton, E., Russey, H. E., Gray, J. E., Bamberger,

E. C, Russell, G., Petley, B. W., Morris, D., 6149.

Russell, D. H., 5195; 6598.

Russell, G., Bussey, H. E., Gray, J. E., Bamberger, E. C, Rushton, E., Petley, B. W., Morris, D., 6149.

Russell, S., Knecht, R. W., 4867.

Russell, S., Knecht, R. W., Jackson, J. E., 4657; 5362.

Russell, S., Knecht, R. W., Vanvandt, T. E., 4089.

Riister, R., Becker, W., Klostermeyer, J., J 69D8-541,

1083 (1965). Rustum, R., Roy, D. M., (1962) Paper III-S9, Mono.43,

Vol. I, p. 307. Ruthberg, S., J 67A6-244, 585 (1963); J65C2-63, 125

(1961) ; 5968. Ruthberg, S., Barnes, M. W., Noyce, R. H., J 67A4-220,

309 (1963) ; 5185. Ruthberg, S., Frenkel, L., J 68A2-266, 173 (1964). Ryan, J. V., J 66C4-113, 373 (1962) ; 5246; 6757. Ryan, J. V., Bender, E. W., (1962) Mono.45.

Rycroft, M. J., J 69D8-540, 1071 (1965). Rydbeck, 0. W. H., J 69D1-447, 111 (1965).

s Saba, W. G., Furukawa, G. T., J 69A1-322, 13 (1965). Saba, W. G., Furukawa, G. T., Douglas, T. B., Victor, A. C, J 69A5-364, 423 (1965). Saba, W. G., Furukawa, G. T., Reilly, M. L., 6018. Sagan, C, Pollack, J. B., J 69D12-602, 1583 (1965) ; J

69D12-614, 1624 (1965). Sager, E. E., Bower, V. E., J 64A4-58, 351 (1960). Sager, E. E., Robinson, R. A., Bates, R. G., J 68A3-

277, 305 (1964). Saha, A. K., Davies, K., 4954.

Saito, S., Bretemps, F. R., 3411; 3915.

Saito, S., Carpenter, R. J., Beaty, E. C, Bender, P. L., Stone, R. O., 3392. Salaman, R., Agy, V., Davies, K., J 65D1-100, 35

(1961). Salaman, R. K., (1962) TN133 (PB161634) ; 4432. Salmon, H. I., Lamb, V. A., 4630. Salmon, H. I., Young, J. P., 3999. Salnikova, V. S., Boxhenov, P. I., Kavalerova, V. I., Suvorova, G. F., (1962) Paper III-S12, Mono.43,

Vol. I, p. 327. Salomonovich, A. E., J 69D12-596, 1576 (1965); J 69D12-608, 1616 (1965).

Salton, G., (1965) M269, p. 201. Sumoddar, S. N., J 69D6-517, 851 (1965). Samson, C. A., 3192; 5619; 6544. Samson, C. A., Linfield, R. F., 4612; 4909. Sanders, W. A., Rebbert, R. E., 5789. Sandoval, I. B., Ausloos, P. J., 5625. Sandoval, I. B., Ausloos, P. J., Lias, S. G., 6448. Sandoval, I. B., Lias, S. G., Ausloos, P. J., 5758. Sanford, R. L., Cooter, I. L., (1962) Mono.47. Sangermano, L., Brauer, G. M., Simon, L., 4690. Sarachman, T. N., 5775. Saran, G. S., Held, G., J 64D5-78, 435 (1960). Sargent, L. M., Klebanoff, P. S., Tidstrom, K. D., 5063. Sasaki, T., Miya, K., Ishikawa, M., J 65D1-107, 93

(1961) . Sasaki, T., Suzukawa, Y., (1962) Paper II-S3, Mono.

43, Vol. I, p. 83. Sasaki, T., Watanabe, K., (1962) Paper IV-S3, Mono.

43, Vol. I, p. 491. Sauer, H. H., 8990. Saunders, C. J., 5476. Saunders, J. B., J 65B4-62, 239 (1961) ; J 66B1-70, 29

(1962) ; J 64C3-37, 173 (1960); J 67C3-130, 201

(1963) ; J 67C4-141, 307 (1963); J 68C3-160, 155

(1964) ; J 69C4-204, 245 (1965); J 69C4-205, 251

(1965) ; 1040A; 3433; 3881; 4325; 5187; 6146. Saunders, J. B., McDermott, J. V., J 68C2-153, 83 (1964). Savage, I. R., J 65B3-59, 211 (1961); J 66B3-77, 93 (1962); (1965) M269, p. 211; 658A.

Saxton, W. A., J 69D4-495, 609 (1965).

Saylor, C. P., 3802A ; 6566. Saylor, C. P., Enagonio, D. P., Pearson, E. G., 5082. Saylor, C. P., Lowey, H. B., J 69C3-198, 191 (1965).

Saylor, C. P., Ross, G. S., J 68C1-150, 35 (1964).

Saylor, C. P., Torgesen, J. L., Horton, A. T., J 67C1-

116, 25 (1963). Scanlon, W. W., Frederikse, H. P. R., Johnson, V. A., 3356AA.

Schafcr, G. E., 3387; 3650. Schafer, G. E., Beatty, R. W., J 64C4-43, 261 (1960);

5976. Schafer, G. E., Bowman, R. R., 4427. Schaffer, R., J 65A6-133, 507 (1961) ; 3153; 6417; 6455. Srhnffer, R., Cohen, A., 5290. Schaffer, R., Isbell, H. S., 4510; 4579; 4967; 5184.

Schafft, H. A., (1964) TN240; 6616. Sdi, i If t, H. A., French, J. C, 4907. Schamp, H. W., Jr., Waxier, R. M., Weir, C. E., J 68A5-

295, 489 (1964). Scharf, K., J 64A4-52, 297 (1960). Scharf, K., Lee, R. M., 4715. Scharf, K., Sparrow, J. H., J 68A6-318, 683 (1964);

J 70A2-394, 181 (1966). Schatten, R., J 68B4-130, 185 (1964).

Scheel, N., Griffing, V., 4703. Scheer, M. D., 5015. Scheer, M. D., Fine, J., 4563; 4636; 5435; 5436; 5767; 9054; 9096. Scheer, M. D., Jackson, W. M., 9144. Scheer, M. D., Kelley, R. D., Klein, R., 6785. Scheer, M. D., Klein, R., 3291; 3334; 4109; 4344; 4745;

5392; 6279; 6336. Scheer, M. D., Klein, R., Waller, J., 3858. Scheer, M. D., McNesby, J. R., Klein, R., 3597; 5108. Scheiber, D. J., J 65C1-52, 23 (1961) ; 3973. Scheiber, D. J., Mead, D. J., 4613. Scheiber, D. J., Scott, A. H., Curtis, A. J., Lauritzen,

J. I. Jr., Hoffman, J. D., J 66A4-162, 269 (1962).

Schell, R. R., Tyras, G., Bargeliotes, P. C, Hamm, J. M., J 69D6-516, 839 (1965).

Schiefer, H. F., Smith, J. C, Blandford, J. M., 3795.

Schiff, H. I., Broida, H. P., Sugden, T. M., 4196. 457
Schiff, H. I., Ferguson, E. E., Fehsenfeld, F C, Dunkin, D. E., Schmeltekopf, A. L., 6173.

Schiff, H. I., Ferguson, E. E., Goldan, P. D., Schmeltekopf, A. L., Fehsenfeld, F. C, 6824.

Schiff, H. I., Megill, L. R., 6451.

Schiff, H. I., Sugden, T. M., 3769. Schiffmacher, E. R., Little, C. G., Chivers, H. J. A., Sullivan, K. W., 6663.

Schleter, J. C, Gates, D. M., Keegan, H. J., Weidner,

V. R., 9028.

Schleter, J. C., Keegan, H. J., Belknap, M. A., J 67A6-

243, 577 (1963) ; 6337.

Schleter, J. C., Keegan, H. J., Judd, D. B., J 66A3-154,

203 (1962).

Schleter, J. C., Keegan, H. J., Weidner, V. R., 6715. Schmeltekopf, A. L., Broida, H. P., 5657. Schmeltekopf, A. L., Fehsenfeld, F. C., Ferguson, E.

E., 6659A; 9020. Schmeltekopf, A. L., Ferguson, E. E., Fehsenfeld, F. C, 6553; 6707. Schmeltekopf, A. L., Ferguson, E. E., Fehsenfeld, F.

C., Dunkin, D. B., Schiff, H. I., 6173. Schmeltekopf, A. L., Ferguson, E. E., Fehsenfeld, F. C., Goldan, P. D., 8947. Schmeltekopf, A. L., Ferguson, E. E., Goldan, P. D., Fehsenfeld, F. C, Schiff, H. I., 6824. Schmid, C. W., Calvert, W., 6388. Schmidt, A. F., 5349; 8985. Schmidt, A. F., Purcell, J. R., Jacobs, R. B., 3880. Schmidt, A. F., Purcell, J. R., Wilson, W. A., Smith,

V. R., J 65C2-58, 81 (1961) ; 3970. Schmidt, H. A., Jr., Berendt, R. D., 5157. Schmidt, L. B., Case, W. E., Harrington, R. D., J 68C2-

154, 85 (1964); J 68C4-172, 255 (1964); (1964) TN221.

Schmidt, V. A., Edelman, S., Smith, E. R., Jones, E., 4209. Schmidt, V. A., Edelman, S., Smith, E. R., Pierce, E.

T., 4779. Schmidt-Rohr, U., Pfleger, J., Speigel, V., Turek, P., Zuckschwerdt, W., 5364. Schncible, D. E., Crary, J. H., J 69D7-528, 947 (1965). Schneider, D. B., (1963) M248, p. 93. Schneider, S. J., J 65A5-123, 429 (1961); (1963) Mono.68; 3192A; 3847; 5297. Schneider, S. J., Diamond, J. J., 3432. Schneider, S. J., Roth, R. S., J 64A4-53, 309 (1960); J 64A4-54, 317 (1960) ; 3707. Schneider, S. J., Roth, R. S., Waring, J. L., J 65A4-

116, 345 (1961). Schneider, S. J., Waring, J. L., J 67A1-190, 19 (1963) ; J 69A3-344, 255 (1965). Schneider, S. J., Waring, J. L., Tressler, R. E., J 69A3-

343, 245 (1965). Schneider, W. E., Stair, R., 6398; 9038. Schneider, W. E., Stair, R., Fussell, W. B., 6564. Schneider, W. E., Stair, R., Jackson, J. K., 5148. Schneider, W. E., Stair, R., Waters, W. R., Jackson,

J. K., 9019. Schnepp, O., 3811A; 4343. Schnepp, 0., Dressier, K., 3416; 3416A; 3711. Schoen, L. J., 3892A.

Schoen, L. J., Broida, H. P., 3510; 3780; 4673. Schoen, L. J., Comeford, J. J., Mann, D. E., hide, D.,

R., Jr., 5409. Schoen L. J., Harmony, M. D., Myers, R. J., hide, D.

R., Jr., Mann, D. E., 4124. Schoen L. J., Mann, D. E., 6071. Schoen, L. J., Mann, D. E., Knobler, C, White, D., 4902. Schon, D. A., 6452. Schooley, J. F., Ambler, E., Eisenstein, J., 5091; 5092. Schooley, J. F., Hoppes, D. D., 5757.

Schooley, J. F., Hoppes, D. D., Hirshfeld, A. T., J 66A4-

165, 317 (1962). Schooley, J. F., Hosier, W. R., Ambler, E., Becker,

J. H., Cohen, M. L., Koonce, C. S., 6682. Schooley, J. F., Hosier, W. R., Cohen, M. L., 6411. Schoonover, I. C, 3347. Schoonover R. M., Bowman, H. A., J 69C3-202, 217

(1965) . Schopf, A., Peavy, S., (1964) AMS55, p. 1011. Schrack, R. A., 8901. Schrack, R. A., Leiss, J. E., Broberg, J., Wyckoff, J. M.,

6245. Schrack, R. A., Leiss, J. E., Penner, S., 4786. Schrack, R. A., Maximon, L. C, J 70B1-170, 85 (1966). Schrack, R. A., Penner, S., Leiss, J. E., 3607. Schreyer, C. H., Piante, E. R., J 70A3-401, 253 (1966)

.

Schrodt, J. E., Hunter, B. J., Kropschot, R. J., Fulk, M. M., 3637. Schrodt, J. E., Kropschot, R. H., Fulk, M. M., Hunter,

B. J., 3656. Schrodt, V. N., Rose, A., Sweeney, R. F., Hoover, T. B., 3540A.

Schroeder, R. A., Shorb, A. M., Lippincott, E. R., 5126A.

Schroeder, R. A., Weir, C. E., J 68A5-294, 465 (1964). Schroeder, R. A., Weir, C. E., Lippincott, E. R., J 66A5-

176, 407 (1962) ; 4728. Schnbauer, G. B., Spangenberg, W. G., 3545. Schubert, D. C, Marton, L., Mielczarek, S. R., (1963) Mono.66; 3933; 5088. Schubert, D. C, Mielczarek, S. R., Marton, L., 3431. Schubert, D. C, Young, R. D., 6650. Schuhmann, S., 4952. Schulz, D. W., Foote, W. J., 4477. Schumm, R. B., Johnson, W. J., Wilson, I. H., Prosen, E. J., J 65A2-90, 97 (1961). Schumm, R. H., Wagman, D. D., Evans, W. H., Halow,

I., Parker, V. B., Bailey, S. M., (1965) TN270-1;

(1966) TN270-2.

Schwartz, R. B., Richardson, A. C. B., 5933. Schwarzenbach, G., Bates, R. G., 988A.

Schwarzl, F., Leaderman, H., 4247. Schwebel, A., 4990A.

Schwebel, A., Costrell, L., Zimmer, G. W., 5581. Schweitzer, W. G.,Jr., 4110; 5394; 5858. Schweitzer, W. G., Jr., Boyne, H. S., Birky, M. M.,

6702. Schweitzer, W. G., Jr., Kessler, K. G., 5857; 9148. Schweitzer, W. G., Jr., Kessler, K. G., Barger, R. L., 3636A. Schwcppe, J. L., Eichberger, L. C, Muster, D. F., Michaels, E. L., Paskusz, G. F., (1963) Mono.67. Schwer, F. W'., Loebenstein, W. V., Barret, E. P., 3196. Schwerdtfeger, W. J., J 65C4-80, 271, (1961); J 66C3-

100, 245 (1962) ; J 68C4-175, 283 (1964) ; J 69C1-

188, 71 (1965) ; 3491; 5268; 9009. Schwerdtfeger, W. J., Manuele, R. J., J 65C3-68, 171

(1961) ; 5237. Schwiete, H. E., Kurczyk, H. G., (1962) Paper III-S13, Mono.43, Vol. I, p. 349. Schwiete, H. E., Ludwig, U., (1962) Paper VIII-6, Mono.43, Vol. II, p. 1093. Schwiete, H. E., Tan Tik-Ien, A., (1962) Paper IV-S10, Mono.43, Vol. I, p. 545. Scott, A. H., 4702; 4937; 5051; 6423; 6697; 6862.

Scott, A. H., Harris, W. P., J 56C2-61, 101 (1961) ; 4280.

Scott, A. H., Scheiber, D. J., Curtis, A. J., Lawritzen,

J. I., Jr., Hoffman, J. D., J 66A4-162, 269 (1962).

Scott, L. E., 5397.

Scott, L. E., Chelton, D. B., Brennan, J. A., 4610.

Scott, R. B., 3602; 4144A; 4145A; 4153A; 5632; 6077A;

6157; 6424; 6668.

Scott, R. B., Corruccini, R. J., Johnson, V. J., Mcintosh, G. E., 3171A.

Scott, W. W., 5147. Scribner,B.F., (1965) TN272; 3528; 3804B; 4901. 458
Scribner, B. F., Corliss, C. H., Meggers, W. F., 3752. Scribner, B. F\, Isbell, H. S., Tipson, R. S., Hague, J. L., Smith, W. H., Wade, C. W. R., Cohen, R., (1962) Mono.54.

Scribner, B. F., Margoshcs, M., J 67A6-240, 561 (1963) ; 4644; 6037; 6734; 9007. Scribner, B. /•'.. Meggers, W. F., Corliss, C. H., (1961) Mono.32, Pts. I and II; 4274. Scribner, />'. F., Mulligan, B. W., Caul, H. J., Rasberry, S.D..J 68A1-251, 5 (1964).

Scudcri, T. G., Clcek, G. W., 3193; 3537. Scuderi, T. G., Kerper, J. J., 5472; 5962; 6217.

Scudcri, T. G., Wachtman, J. B., Jr., Cleek, G. W.,

4730. Seaman, M. L., Branscomb, L. M., Steiner, B., 4624. Seaman, M., Steiner, B., Branscojnb, L. M„ 6039. Scaton, M. J., Dalgamo, A., Pecker, C, (1961) TN124

(PB161625).

Scaton, M. J., Geltman, S., Rudge, M. R., 5328.

Scchrist, C. F., J 68D1-326, 125 (1964).

Seeley, E. W., J 67D2-258, 215 (1963) ; J 67D4-274, 387

(1963) ; J 67D5-288, 563 (1963).

Seidel, M., (1965) M269, p. 167. Selby, M. C, J 64D6, 303 (1960); J 68D5-360, 533

(1964) ; 6322; 6853.

Seliger, H. H., Agranoff, B. W., 3302.

Seliger, H. H., Bay, Z., 3471.

Seliger, H. H„ Bay, Z., Newman, P. A., 3958.

Seliger, H. H., Mann, W. B., 3738.

Seliger, H. H., Mann, W. B., Marlow, W. F., Medlock,

R. W., 3743.

Seltzer, S. M., Berger, M. J., 6041; 6043; 6218A; 6420;

9000. Seman, M. L., Branscomb, L. M., 4947. Seman, M. L., Steiner, B., Branscomb, L. M., 6039. Sen,H.K., Wyller, A. A., J 69D1-446, 95 (1965).

Senftle, F. E., Pankey, T., Grant, F. A., 3621. Sengers, J. V., 6498; 6679; 9107. Senior, T. B. A., Siegel, K. M., J 66D3-190, 227 (1962). Seshadri, K. S., Mann, D. E., Dever, D. F., Linevsky, M. J., 5763. Seshadri, S. R., J 68D12-433, 1285 (1964); J 68D12-

434, 1297 (1964) ; J 69D4-493, 579 (1965).

Seshadj'i,S. R., Tuan,H. S.,J 69D5-511, 767 (1965). Severo, N. C, Connor, W. S., 4603. Severo, N. C, Levin, B. M., 3978. Severo, N. C, Montzingo, L. J., Jr., 4547. Severo, N. C, Youden, W. J., Connor, W. S., 3250. Severo, N. C, Zelen, M., (1964) AMS55, p. 925; 3560;

3671. Shadmi, Y., J 69A6-371, 511 (1965). Shafer, A. B., Megill, L. R., Droppleman, L. K., 6276. Shafer, M. R., 3116; 4218; 4829. Shafer, M. R., Baker, D. W., Benson, K. R., J 69C4-212, 307 (1965). Shafer, M. R., Filban, T., 6072A.

Shampiyie, L. F., J 69B3-146, 155 (1965) ; J 69B4-163, 333 (1965). Shapiro, G., Laug, 0. B., Rogers, G. J., Fulcomer, P. M.,

Jr., (1964) Mono.83.

Shapiro, G., Rogers, G. J., 6841. Shapiro, G., Rogers, G. J., Lang, O. B., Fulcomer, P. W.,

Jr., 6341. Shapiro, I. I., J 69D12-616, 1632 (1965). Shapley, A. H., 2697A; 3744; 4128; 4398; 4783; 4895;

5430; 5645; 5716; 5762; 5899; 6539; 9084. Shapley, A. H., Leighton, H. I., Smith, E. K., 5030. Shapley, A. H., Lincoln, J. V., 4688; 4707; 5222; 5420;

5422; 6151. Shapely, A. H., Piggott, W. R., 5014. Shapley, A. H., Villard, O. G., Jr., 4284. Shapley, A. H., Weldon, J. M., Lincoln, J. V., 4229. Sharnoff,M., 6029; 6731. Sharp, R. D., Hargreaves, K. L., 6733A.

Sharp, T. E., McCulloh, K .E., Rosenstock, H. M., 6698. Sharp, T. E., Rosenstock, H. M., 6087.

Shartsis, J. M., Ormsby, W. C, 3468; 3803.

Shartsis, J. M., Ormsby, W. C, Woodside, K. H., 4641. Shartsis, L., Capps, W., Spinner, S., 682A. Shaw, B. W., Zmuda, A. J., Haave, C. R., J 68D1-325,

117 (1964). Shaw, C. C, Gates, D. M., 3839. Sheer, M. D., Fine, J., Madey, T. E., 9069. Sheer, M. D., Klein, R., Kelley, R., 5996. Shelby, J., Newkirk, G. A., Curtis, G. W., Watson, D. K., Manning, R., 3335A.

Shelby, M. C, (1962) Mono.46.

Shenstone, A. G., J 67A2-197, 87 (1963). Shepherd, M., Rock, S. M., Howard, R., Stormes, J., 251B.

Shepley, L. C, Bestul, A. B., 3905; 5289. Shcreshefsky, J. L., Lee, W. M., Stromberg, R. R., J 65A1-82, 51 (1961) ; J 66A5-178, 439 (1962). Sherfey, J. M., 3888; 5224. Sherfey, J. M., Metzger, W. H., Jr., 6019. Sherlin, G. C, J 64A4-50, 281 (1960). Sherman, R. H., Roberts, T. R., Sydoriak, S. G., J 68A6-

303, 567 (1964). Sherman, R. H., Sydoriak, S. G., J 68A6-301, 547

(1964). Sherman, R. H., Sydoriak, S. G., Roberts, T. R., J 68A6-

302, 559 (1964) ; J 68A6-304, 579 (1964). Shestopyorov, S. V., (1962) Paper VI-S5, Mono.43, Vol.

II, p. 889.

Shettle, E. P., Meyer-Arendt, J. R., 6624.

Shields, J. Q., J 69C4-207, 265 (1965).

Shields, J. Q., Cutkosky, R. D., 3857.

Shields, W. R., Catanzaro, E. J., Murphy, T. J., Garner,

E. L., J 68A6-306, 593 (1964).

Shields, W. R., Craig, D. N., Dibeler, V. H., 3412; 3413.

Shields, W. R., Garner, E. L., Dibeler, V. H., J 66A1-

135, 1 (1962)

Shields, W. R., Garner, E. L., Hedge, C. E., Goldich, S S 5718

Shields, W. R., Garner, E. L., Rosholt, J. N., 5433.

Shields, W. R., Goldich, S. S., Garner, E. L., Murphy,

T. J., 6880. Shields, W. R., Herron, J. T., Rosenstock, H. M., 6882. Shields, W. R., Murphy, T. J., Catanzaro, E. J., Garner,

E. L., J 70A2-395, 193 (1966)

.

Shields, W. R., Murphy, T. J., Garner, E. L., J 68A6-

305, 589 (1964).

•'iie'hl', }V : n, ><}>>(, T. J., Garner, E. L., Dibeler, V. H., 4461.

Shields, W. R., Rosholt, J. N., Garner, E. L., 6084.

Shields, W. R., Rosholt, J. TV., Garner, E. L., Butler, A. P., 6819.

Shields, W. R., Rosholt, J. N., Harshman, E. N., Garner, E. L., 6166. Shiffman, C. A., 3841; 4766. Shiffman, C. A., Mendelssohn, K., 3876. Shimanouchi, T., Suzuki, I., 6864. Shimazaki, T'., 6222; 8912. Shin, H., 4565. Shipp,R. D.,J 69B4-155, 259 (1965). Shirgaokar, M., Maeda, H., Matsushita, S., Yashuhara,

M., 6252.

Shirley, J. H., 5667; 5668; 5694. Shisha, O., J 66B2-72, 53 (1962) ; 6260. Shisha, O., Cargo, G. T., J 66B4-84, 169 (1962) ; J 70B1-

168, 79 (1966) ; 5864. Shisha, O., Mond, B., J 68B3-124, 115 (1964). Shisha, O., Walsh, J. L., 4384; 5811; 6256. Shives, T. R., Bennett, J. A., 9074. Shives, T. R., Moore, G. A., 4246. Shook, D. C, Conrad, G. T., Jr., J 69C4-213, 319 (1965). Shorb, A., Franklin, A. D., Wachtman, J. B., Jr., J 68A5-290, 425 (1964). Shorb, A. M., Schroeder, R. A., Lippincott, E. R., 5126A. Shoub, H., (1963) M252; 4044. Shoub, H., Gross, D., (1966) BSS3.

Shouse, P. J., Smith, J. C, Blandford, J. M., Towne,

K. M., 4318; 4946. Shouse, P. J., Smith, J. G., Fenstermaker, C. A., J 68C3- 459
162, 177 (1964) ; 5212; 5706; 9047. Shuler, K. E., 3294; 3366; 3749; 4893; 5428. Shuler, K. E., Andersen, H. C, Oppenheim, I., Weiss, G.

H., 6056; 6224. Shuler, K. E., Andersen, K., 6259. Shuler, E. K., Andersen, K., Weiss, G. H., 4950. Shuler, K. E., Branscomb, L. M., Suddeth, J. A., (1961) TN116 (PB161617).

Shuler, K. E., Carrington, T., Light, J., 6891. Shuler, K. E., Mies, F. H., 4869. Shuler, K. E., Oppenheim, L, 6847. Shuler, K. E., Oser, H., Weiss, G., 6345. Shuler, K. E., Rubin, R. J., 3681. Shuler, K. E., Weiss, G., 5464. Shuler, K. E., Zwanzig, R. W., 3731A.

Shull, E. R., Linevsky, M. J., Mann, D. E., Wartick, T., 893A. Shumaker, J. B., Jr., 3980; 6231. Shumaker, J. B., Jr., Popenoe, C. H., J 69A6-370,

495 (1965). Shumaker, J. B., Jr., Wiese, W. L.. 4171 ; 4751. Shumaker, J. B., Jr., Yokley, C. R., 4316; 5132; 6488. Sickafus, E. N., Winder, D. R., 6107.

Siddiqui, M. M., J 64B3-31, 145 (1960) ; J 65B2-50, 117

(1961) ; J 66D2-184, 167 (1962); J 66D5-217, 571

(1962) ; J 68D9-400, 1005 (1964); 3810; 3821; 4499; 4666; 5550; 5998; 6607.

Siddiqui, M. M., Weiss, G. H., J 67D6-304, 753 (1963).

Siegel, H. O., Collett, L. S., Brant, A. A., Bell, W. E., Ruddock, K. A., Wait, J. R., 3239A

Siegel, K. M., J 68D4-359, 436 (1964)

.

Siegel, K. M., Felsen, L. B., J 64D6, 707 (1960).

Siegel, K. M., Senior, T. B. A., J 66D3-190, 227 (1962).

Siegel, S., Koidan, W., 6089.

Sieglaff, C. L., Mazur, J., 4631. Siegman, A., J 64D6, 758 (1960).

Sikora, P., Arp, V., Wilson, J. H., Winrich, L., 5074.

Silberstein, R., J 65D3-124, 233 (1961).

Sillars, W. A., Rankin, B. K., Ill, Hsu, R. W., (1965) TN254.

Silsbee, F. B., J 66C2-94, 137 (1962) ; (1962) Mono.56; 2603A; 3301. Silverman, J. N., Obata, Y., 5714. Silverman, J. N., Womack, C. M., 5207. Silverman, S. M., Roach, F. E., Moore, J. G., Bruner, E. C., Jr., Cronin, H., 3836.

Silverton, E., Pasternack, R. F., J 70A1-384, 23 (1966)

.

Simmons, J. A., Parker, R. L., Howard, R. E., 6497. Simmons, J. D., Bartky, I. R., Bass, A. M., 9131. Simon, H., Weygand, F., Kell, K. D., Isbell, S. H., Sniegoski, L. T., 4722. Simon, L., Brauer, G. M., J 66A4-164, 313 (1962). Simon, L., Brauer, G. M., Sangermano, L., 4690. Simpson, J. A., 4031; 5920; 6115. Simpson, J. A., Chamberlain, G. E., Mielczarek, S. R., 6748. Simpson, J. A., Fano, U., 5234. Simpson, J. A., Fowler, H. A., Marton, L., Suddeth,

J. A., 4061. Simpson, J. A., Kuyatt, C. E., J 67C4-138, 279 (1963) ; 5280; 5707; 6127. Simpson, J. A., Kuyatt, C. E., Mielczarek, S. R., 5330;

6042; 6721. Simpson, J. A., Marton, L., 4115. Simpson, J. A., Marton, L., Fowler, H. A., Swanson, N., 4844. Simpson, J. A., Marton, L., Leder, L. B., Marton, C., Mendlowitz, H., Suddeth, J. A., Wagner, M. D., 3459. Simpson, J. A., Marton, L., Suddeth, J. A., Leder, L. B., 5099. Simpson, J. A., Mendlowitz, H., 4813. Simpson, J. A., Mielczarek, S. R., 5284. Simpson, J. A., Mielczarek, S. R., Cooper, J., 6239. Simpson, J. A., Rauth, A. M., 6445. Simpson, P. R., Morgan, A. H., 3288C. Simson, B. G., Deslattes, R. D., Horton, A. T., 9013.

Singleton, D. G., J 68D8-385, 867 (1964) ; J 68D10-409,

1095 (1964).

Sisa, M. E., Caul, H. J., Clabaugh, W. S., 3724. Sixsmith, H., 4058. Sixsmith, H., Birmingham, B. W., Wilson, W. A., 4981. Sixsmith, H., Mann, D. B., Wilson, W. A., Birmingham,

B. W., 5161. Sixsmith, H., Wilson, W. A., J 68C2-156, 101 (1964). Sixsmith, H., Wilson, W. A., Birmingham, B. W.,

(1961) TN115 (PB161616).

Sizemore, K. S., Jones, E., Edelman, S., 3991; 4512. Skaggs, G. A., Davis, J. R., Rohlfs, D. C, Joss, J. W.,

J 69D12-619, 1659 (1965). Skoda, L. F., Bryson, J. O., Watstein, D., 6758. Skramstad, H. K., 3135. Skramstad, H. K., Harrison, W. N., Richmond, J. C,

4935. Skramstad, H. K., Harrison, W. N., Richmond, J. C,

Plyler, E. K., Stair, R., 4308. Skramstad, H. K., Urban, W. D., Hahn, W. R., Jr., 3373A" 3473. Skramtaev, B. G., (1962) Paper VIII-S7, Mono.43, Vol.

II, p. 1099. Slagg, N., Rebbert, R. E., 4858.

Slater, L. J., (1964) AMS55, p. 503.

Slee, 0. B., Higgins, C. S., J 69D12-585, 1536 (1965).

Sligh, J., Brenner, A., 5370.

Sligh, J. L., Lamb, V. A., 4000.

Slutz, R. J., 5045.

Slutz, R. J., Bailey, D. K., Cottony, H. V., Kirby, R. C,

Norton, K. A., Davis, R. M., Merrill, R. G., 3737.

Slutz, R. J., Winkelman, J. R., 6364. Smart, J. R., Newman, M., 5154 ; 5492 ; 5513. Smelser P 5592

Smelser, P., Muh'lenhaupt, R. C, (1963) TN200.

Smith, A. G., Carr, T. D., Gulkis, S., May, J., Lebo,

G. R., Kennedy, D. J., Bollhagen, H., J 69D12-

584, 1530 (1965). Smith, C. N., Anspach, S. C, Cavallo, L. M., Garfinkel,

S. B., Hutchinson, J. M. R., (1965) M269-9. Smith, C. R., 5936. Smith, D., Janes, H. B., Kirkpatrick, A. W., Waters,

D. M., (1965) TN307.

Smith, D., Waters, D. M., Thompson, M. C, Jr., 4851. Smith, D. K., 3118; 3134; 3401; 3945; 5271. Smith, D. K., Majumdar, A. J., Ordway, F., 4268; 6673. Smith, E. K., 2800A; 4362; 5029. Smith, E. K., Bateman, R., Finney, J. W., Tveten, L. H., Watts, J. M., 3362. Smith, E. K., Davis, R. M., Jr., Ellyett, C. D., 3310A.

Smith, E. K., DeGregorio, J. F., Finney, J. F., Kildhal,

K., 4886. Smith, E. K., Finney, J. W., 3704 ; 3705. Smith, E. K., Leighton, H. I., Shapley, A. H., 5030. Smith, K. K., Matsushita, S., 4710A; 4718. Smith, E. K., Menzel, D. H., (1964) TN211, Vol. 1-6. Smith, E. K., Ochs, G. R., Carpenter, R. J., 4933. Smith, E. L., (1964) TN237, p. 3; 4891. Smith, E. L., Corliss, E. L. R., Magruder, J. 0., 3227A;

4104. Smith, E. R., Bates, R. G., 135A; 247A; 316A.

Smith, E. R., Schmidt, V. A., Edelman, S., Jones, E., 4209. Smith, E. R., Schmidt, V. A., Edelman, S., Pierce, E. T., 4779. Smith, F., Taylor, J. K., 3726. Smith, J. C, 3740; 3995. Smith, J. C, Blandford, J. M., Schiefer, H. F., 3795. Smith, J. C, Blandford, J. M., Shouse, P. J., Towne,

K. M., 4946. Smith, J. C, Blandford, J. M., Towne, K. M., 4945. Smith, J. C, Fenstermaker, C. A., 9046. Smith, J. C, Fenstermaker, C. A., Shouse, P. J., J 68C3-

162, 177 (1964) ; 5212; 5706; 9047. Smith, J. C, Shouse, P. J., Blandford, J. M., Towne,

K. M., 4318. Smith, J. F., Brombacher, W. G., (1965) M271. 460
Smith, J. L., Leiner, A. L., Notz, W. A., Marimont,

R. B., 3164. Smith, J. L., Leiner, A. L., Notz, W. A., Weinberger, A 1159AA.

Smith ','J. R., Boone, T. H., 3992. Smith, L. E., Fhjnn, J. H., 4005. Smith, L. L., Alexander, R. B., 5480. Smith, L. L., Davis, T. N., 6547. Smith, L.L., Owen, R. W., (1966) TN329.

Smith, L. L., Roach, F. E., (1964) TN214.

Smith, L. L., Roach, F. E., Oiven, R. W., 9058. Smith, M. W., Wiese, W. L., Glennon, B. M., (1966) NSRDS-NBS4, Vol. I. Smith, P. L., Jr., J 69D6-521, 881 (1965). Smith, R. C, Hacskaylo, M., (1964) M256, p. 83. Smith, R. L., J 64D5-88, 505 (1960). Smith, R. 0., 5874. Smith, R. 0., Willis, E. A., Hilten, J. S., J 66C4-111, 357 (1962). Smith, R. V., (1963) TN179; 5232; 5673. Smith, R. V., Brentari, E. G., 6205; 8092. Smith, R. V., Brentari, E. G., Giarratano, P. J., (1965) TN317.

Smith, R. V., Edmonds, D. K., Brentari, E. G., Richards, R. J., 5917. Smith, R. V., Isbin, H. S., Fauske, H. K., Petrick, M., Robbins, C. H., Zuludek, F. R., 5981. Smith, R. V., Schmidt, A. F., Purcell, J. R., Wilson, W. A., J 65C2-58, 81 (1961) ; 3970. Smith, R. V., Stewart, R. B., Strobridge, T. R., 4562. Smith, R. V., Wergin, P. C., Ferguson, J. F., Jacobs, R. B., 5064. Smith, R. W., 6788. Smith, R. W., Jensen, M. W., (1965) H94.

Smith, S. J., 3710. Smith, S. J., Branscomb, L. M., 3698. Smith, S. J., Branscomb, L. M., Tisone, G. C., 8932. Smith, S. J., Chamberlain, G. E., Heddle, D. W. 0., 6447. Smith, S. W., Brooks, J. R., 3628. Smith, W., Weiss, A., 1011B.

Smith, W. B., Balser, M., J 66D6-232, 721 (1962). Smith, W. H., Isbell, H. S., Tipson, R. S., Hague, J. L., Scribner, B. F., Wade, C. W. R., Cohen, A., (1962) Mono.54.

Smith, W. H., Souder, W., 209A.

Smith, W. T,, Achenbach, P. R., Davis, J. C, (1962) Mono.51.

Smith, W. T., Achenbach, P. R., Phillips, C. W., 6111A.

Smith, W. W., 6786. Smith-Rose, R. L., J 67D2-247, 99 (1963). Smullin, L., J 64D6, 763 (1960) ; J 64D6, 766 (1960). Smyth, J. B., J 65D3-131, 293 (1961) ; J 68D9-397, 983

(1964). Sneed, H. M. S., Hayward, H. W., Turnipseed, J. H., Tauber, S. J., 9018.

Snider, C. S., Beehler, R. E., Atkinson, W. R., Heim,

L. E., 4416. Snider, C. S., Beehler, R. E., Mockler, R. C, 3375. Snider, C. S., Mockler, R. C, Beehler, R. E., 3443. Sniegoski, L. T., Frush, H. L., Holt, N. B., Isbell, H. S., J 69A6-376, 535 (1965).

Sniegoski, L. T., Frush, H. L., Isbell, H. S., J 65A5-

125, 441 (1961).

Sniegoski, L. T., Isbell, H. S., J 66A1-138, 29 (1962) ; J 67A6-241, 569 (1963) ; J 68A2-262, 145 (1964)

;

J 68A3-276, 301 (1964).

Sniegoski, L. T., Isbell, H. S., Frush, H. L., 4572; 5106. Snodgrass, R. J., Bennett, L. H., 5439; 5517; 5898;

6233. Snodgrass, R. J., Bennett, L. H., Cotts, R. W., 9012. Snoke, H. R., 3213. Snow, C. R., Driscoll, L., J 69C1-185, 49 (1965). Snow, G. A., DeSouza, P. D., Meshkov, S., 6415. Snow, G. A., Meshkov, S., Yodh, G. B, 5960; 6519. Snyder, C. F., Hattenburg, A. T., (1963) Mono.64.

Sodha, M. S., Palumbo, C. J., J 69D1-448, 139 (1965).

Solarski, J. E., Wiese, W. L., 6063.

Solarski, J. E., Wiese, W. L., Paqnette, D., 4083; 5597. Solymar, L., Karbowiak, A. E., J 65D1-105, 75 (1961). Sommer, A., White, D., Linevsky, M. J., Mann, D. E., 5406. Sommer, A., White, D., Mann, D. E., Walsh, P. N., 3579" 3580

Sonett, C. P., J 69D8-537, 1033 (1965).

Soni, R. P., Cornacchio, J. V., J 69B3-149, 173 (1965). Sopka,J. J., J 70B2-173, 137 (1966). Sopka, J. J., Devenney, J. H., (1963) TN203.

Souder, W., 1291A.

Souder, W., Paffenbarger, G. C, 3281 A; 5860. Souder, W., Smith, W. H., 209A.

Southard, T. H., (1964) AMS55, p. 627. Spangenberg, D. B., Strang, A. G., Chamberlin, J. L., 6716. Spangenberg, W. G., Rowland, W. R., 3699; 4017. Spangenberg, W. G., Schubauer, G. B., 3545. Sparks, L. L., Hord, J., Jacobs, R. B., Robinson, C. C,

6235. Sparrow, J. H., Scharf, K., J 68A6-318, 683 (1964) ; J 70A2-394, 181 (1966). Spaulding, A. D., 5984. Spaulding, A. D., Crichlow, W. Q., Roubique, C. J., Disney, R. T., (1960) Mono.23.

Spaulding, A. D., Roubique, C. J., Crichlow, W. Q., J 66D6-231, 713 (1962). Speckman, J. A., J 68B2-115, 49 (1964). Speckman, J. A., Cornell, R. G., 6743. Spector, N., 5969; 6762; 6886. Spencer, L. V., (1962) Mono.42; 3554; 6893. Spencer, L. V., Coyne, J., 5072. Spencer, L. V., Fano, U., Berger, M. J., 3280. Spencer, L. V., Hubbell, J. H., (1964) Mono.69.

Spetner, L. M., Katz, I., J 64D5-83, 483 (1960).

Spiegel, J., Bennett, E. M., (1965) M269, p. 47. Spiegel, V., Jr., Beverly, W. B., J 68A1-250, 1 (1964).

Spiegel, V., Jr., Caswell, R. S., Beverly, W. B., 5335.

Spiegel, V., Jr., Pfleger, J., Schmidt-Rohr, U., Turek,

P. Zuckschwerdt, W., 5364. Spiegel, V., Jr., Richardson, A. C. B., 3965.

Spies, K. P., Wait, J. R., J 67D2-254, 183 (1963) ; J 68D11-428, 1249 (1964) ; J 69D10-570, 1359 (1965) ; (1961) TN114 (PB161615); (1964) TN300; 3577;

Spijkernian, J. J., Ruegg, F. C, DeVoe, J. R., 6708. Spinner, S., J 65C2-59, 89 (1961) ; 4973. Spinner, S., Cleek, G. W., 3809. Spinner, S., Knudsen, F. P., Stone, L., J 67C1-118, 39

(1963). Spinner, S., Napolitano, A., J 70A2-390, 147 (1966). Spinner, S., Shartsis, L., Capps, W., 682A.

Spinner, S., Stone, L., Knudsen, F. P., J 67C2-122, 93

(1963) . Spinner, S., Tefft, W. E., J 65A3-99, 167 (1961); J

66A2-153, 193 (1962) ; 3932. Spinner, S., Wachtman, J. B., Jr., J 68A6-316, 669

(1964) . Spinner, S., Weir, C. E., 4621. Spizzichino, A., du Castel, F., Misme, P., Voge, J., J

66D3-195, 273 (1962). Spokas, 0. E., Danos, M., 4628.

Sposito, A., Latmiral, G., J 66D1-171, 23 (1962). Spring, C. P., Lashof, T. W., Maton, G. L., 3195. Squire, W., 5138.

Stair, R., 3248; 5034.

Stair, R., Fussell, W. B., 8954.

Stair, R., Fussell, W. B., Schneider, W. E., 6564.

Stair, R., Johnston, R. G., Halbach, E. W., J 64A4, 291

(1960).

Stair, R., Harrison, W. N., Richmond, J. C, Plyler, E. K., Skramstad, H. K., 4308.

Stair, R., Schneider, W. E., 6398; 9038.

Stair, R., Schneider, W. E., Jackson, J. K., 5148.

Stair, R., Schneider, W. E., Waters, W. R., Jackson,

J. K., 9019. 461
Stallmann, F. W., Pipberger, H. V., Arms, R. J., 3982. Stanford, J. W., Burns, C. L., Paffenbarger, G. C,

1484A.

Stanford, J. W., Ohashi, M., Paffenbarger, G. C, 9022;

9067. Stanford, J. W., Paffenbarger, G. C, Sweeney, W. T., 3420; 4476; 6109. Stanford, J. W., Weigel, K. V., Paffenbarger, G. C,

4286. Stanford, J. W., Weigel, K. V., Paffenbarger, G. C,

Sweeney, W. T., 3481. Stanley, C. L., Jessup, R. S., 4105. Stanley, C. L., Mears, T. W., Compere, E. L., Jr., Howard, F., J 67A5-236, 457 (1963). Stanley, R. W., Meggers, W. F., J 69A2-332, 109

(1965). Stansbury, C, 3928; 4098; 5545. Stansbury, A. P., Conrad, G. T., Jr., Newman, N., Stark, M. C, (1961) TN119 (PB161620) ; 4540; 6535. Stark, M. C, Levin, B. M., Tosini, P. C, 3718; 4236. Stark, M. C, Moore, R. T., Cahn, L., 5991. Staugaitis, C. L., Burnett. H. C, 1759A.

Stavroudis, O. N., 4880; 5932. Stavroudis, O. N., Malitson, I. H., Cleek, G. W., Sutton, L. E., 5408. Stavroudis, 0. N., Sutton, L. E., 4090; 4259. Stearns, C. O., Stewart, A. C, 6596. Stebbings, R. R., Hummer, D. G., Fite, W. L., Branscomb, L. M., 3461.

Steel, M. N., Mandel, J., Roth, F. L., Stiehler, R. D., 3249.

Steel, M. N., McCrackin, F. L., Mandel, J., (1965) TNSteel, M. N., McKean, H. A., Mandel, J., 3396.

Steel, M. N., Stiehler, R. D., Mandel, J., 446A.

Steel, N., Stiehler, R. D., Richey, G. G., Mandel, J., Hobbs, R. H., 3283.

Steele, F. K., Brady, A. H., Crombic, D. D., Jean, A. G., Murphy, A.,C, 6182.

Steele, F. K., Chilton, C. J., J 68D12-431, 1269 (1964) ; J

69D8-552, 1196 (1965).

Steele, F. K., Chilton, C. J., Crombie, D. D., (1964) TN210.

Steele, F. K., Chilton, C. J., Norton, R. B., 5849. Stegun, I. A., (1964) AMS55, pp. 331, 997. Stegun, I. A., Abramowitz, M., Editors, (1964) AMS55.

Stegun, I. A., Fang, P. H.. 3128; 5354.

Steiger, W. R., Roach, F. E., Barbier, D., J 66D2-181,

145 (1962). Steinberg, H. L., Currie, L. A., France, G. M., Ill, 8977. Steinberg, H. L., McCrackin, F. L., Passaglia, E., Stromberg. R. R., J 67A4-227. 363 (1963)

.

Steiner, B., Branscomb, L. M., Seaman, M. L.. 4624.

Steiner, B., Seman, M., Branscomb, L. M., 6039.

Steinert, L. A., (1964) TN207; 3220; 5355; 6726; 6727. Stenqer, F.. Oliver. F. W. J., 6741. Stephens. R. B., Mielenz, K. D., Cook, H. D., Gillilland, K. E., 5902. Stephens. R. B.. Mielenz, K. D., Nefflen, K. F., J 68C1-

147, 1 (1964). Stephens, R. E., 3548; 4161.

Sterling, J. T., Palumbo, F. J., Wyman, L. L., J 66A6-

183,483 (1962). Stern, J.. 4479; 4533. Stern. K. H., J 69A3-347, 281 (1965); 4142; 4824;

5321; 6652; 6724. Stern, K. H., Buplin, M., 3634. Stern, K. H., Kruger, J.. 4958. Stern, K. H., Meador, S. E., J 69A6-379, 553 (1965). Stern, K. H., Reid, W. E., Jr., 6022. Stern, K. H., Richardson, E. A., 3842. Stern, K. H., Stiff, J. A.. 6021. Stern, R. C, Madey, T. E., Yates. J. T., Jr., 6820.

Sterrett. K. F., Blackburn. D. H.. Bestul. A. B., Chang,

S. S., Horman, J., J 69C1-181, 19 (1965).

Stevens, M. E., (1965) Mono.91; (1961) TN112 (PB161613); 3323; 3619; 3961; 3983; 4758. Stevens, M. E., Bagg, T. C, (1962) TN157.

Stevens, M. E., Giuliano, V. E., Heilprin, L. B., (1965) M269.

Stevens, M. E., Henderson, M. M., Moats, J. S., Newman, S.M., (1966) M276.

Stevens, M. E., Urban, G. H., (1965) M269, p. 269;

6509. Stevens, M. S., Fischer, G. L., Pollack, D. K., Roddick,

B., 4816. Steward, W. G., 9118. Steward, W. G., Richards, R. J., Jacobs, R. B., (1961) TN122 (PB161623) ; 3890. Stewart, A. C, Stearns, C. 0., 6596. Stewart, J. E., Linnig, F. J., 3564. Stewart, J. E., Linnig, F. J., Parks, E. J., J 68A5-296,

499 (1964).

Steivart, J. W., 5989.

Steivart, R. B., 6471. Stewart, R. B., Hust, J. G.. (1963) TN202.

Stewart, R. B., Hust, J. G., Wallace, L. D., Crim, J. A., Hall, L. A., (1962) TN137 (PB161638).

Steivart, R. B., Johnson, V. J.. 3376. Stewart, R. B.. McCarty, R. D., 4482; 6307; 9113. Stewart. R. B., McCarty, R. D., Timmerhaus, K. D., 5603. Stewart, R. B., Mann, D. B., 3356. Stewart, R. B., Roder, H. M., 6317. Stewart. R. B., S7nith. R. V., Strobridge. T. R., 4562. Stewart, R. B., Timmerhaus, K. D., 6435.

Stief, L. J., Ausloos, P., 4404; 4876.

Stiehler, R. D., 3985; 5543; 6399.

Stiehler. R. D., Mandel, J. Roth, F. L., Steel, M. N., 3249.

Stiehler, R. D., Richey. G. G.. Mandel. J.. 3131.

Stiehler, R. D., Roth, F. L., 3312; 4535; 6659.

Stiehler, R. D.. Steel. M. N., Mandel, J.. 446A.

Stiehler. R. D.. Steel, N., Richey, G. G., Mandel, J., Hobbs, R. H., 3283.

Stiff, J. A., Stern, K. H., 6021.

Stiltner, E. C, Little, C. G., Reid, G. C, Merritt, R. P., 4484.

Stiltner. E. C, Calvert, W., Davies, K., Brown, J. T., 4639; 5338.

Stiltner. E. C, Campbell, W. H., J 69D8-544, 1117

(1965). Stimson. H. F.. J 65A3-96, 139 (1961) ; (1961) Mono.37;

4515; 5057. St'mson. H. F.. Gui'dner. L. A.. 5839. Stimson, H. F., Swindells, J. F., Wilson, R. E., 5729.

Stinchfield, R. P., Swanson, H. E., Morris, M. C. Evans,

E. H., (1962) Mono.25, Sec. 1; (1963) Mono.25,

Spc. 2. Stinchfield, R. P., Wachtman, J. B., Jr., Tefft, W. E., Lam, D. G.. 3514. Stober, A. K., 3383. Stooryn. A. P., Ghose, R. N., J 68D2-327, 147 (1964).

Stokes. R. J., (1965) M?57. Paner 4, p. 41. Stone, F. G. A.. Coyle, T. D., 6371. Stone, J. J., Goldman, A. J., 3378. Stone, L., Spinner. S., Knudsen, F. P., J 67C1-118, 39 (1963); J 67C2-122, 93 (1963). Stone, M. L.. Fricker, S. J., Inqalls, R. P., Mason, W. L., Swift, D. W., J 64D5-81/455 (1960).

Stone, P., Georae, D. A., Dunlap. L. A.. 5579. Stone, P., George, D. A., Roth, F., 5580. Stone, R. O., Carpenter, R. J., Beaty, E. C, Bender, P. L„ Saito, S., 3392. Stonehocker, G. H.. Peterson, V. L.. Wright. J. W.. 6627. Stonehoeker, G. H., VanZandt, T. E., Norton, R. B., 3709. Stoneley, R.. Hochstrasser, U. W.. 4381A.

Storey, J. R.. Coll, D. C, J 68D10-415, 1155 (1964); J 69D8-550, 1191 (1965). Stormes, J., Shepherd, M., Rock, S. M., Howard, R., 251A. 462
Story, V. M., Canty, G., J G8A2-2G5, 165 (1964).

Stovall, T., 6038.

Stovall, T., Danos, M., 5515.

Straiton, A. W., Britt, C. 0., Tolbert, C. W., J 65D1-98,

15 (1961). Strand, 0. A7

., 6551. Strang, A. G., Spang enberg, D. B., Cliamberlin, J. L., 6716. Strassburger, J., Brauer, G. M., Tryon, M., Forziati, A.

F., 3427. Strassburger, J., Torgesen, J. L., J 67A4-224, 347

(1963) ; 6106. Straus, S., Madorsky, S. L., J 64A6-73, 513 (1960) ; J 65A3-108, 243 (1961); J 66A5-175, 401 (1962);

4307. Straus, S., Madorsky, S. L., Mclntyre, D., O'Mara, J. H., J 66A4-163, 307 (1962). Straus, S., Mclntyre, D., O'Mara, J. H., J 68A2-263,

153 (1964).

Straus, S., Wall, L. A., J 65A3-105, 221 (1961) ; J 65A3-

106, 227 (1961); 3731; 6323; 6324. Straus, S., Wall, L. A., Antonucci, J. M., Tryon, M.,

4025. Sheerer, R.L., 5518; 6232. Streever, R. L., Bennett, L. H., 4706; 4795; 5445. Streever, R. L., Bennett, L. H., LaForce, R. C., Day, G.

F., 4794; 5521. Streever, R. L., Uriano, G. A., 6234; 6898; 6899; 8900.

Strine, G. L., Beers, Y., 5020.

Strine, G. L., Zimmerer, R. W'., Anderson, M. V., Beers,

Y., 4775; 5490. Strobridge, T. R., (1962) TN129 (PB161630) ; (1963) TN129A.

Strobridge, T. R., Mann, D. B., 6216; 6558. Strobridge, T. R., Stewart, R. B., Smith, R. V., 4562. Strohbehn, J. W'., Waterman, A. T., Jr., J 67D6-294,

609 (1963) ; J 68D2-330, 173 (1964). Stromberg, R. R., Bersch, C. F., Achhammer, B. G., Stromberg, R. R., Grant, W. H., J 67A6-246, 601 (1963). Stromberg, R. R., Grant, W. H., Passaglia, E., J 68A4-

287,391 (1964). Stromberg, R. R., Kline, G. M., 3963. Stromberg, R. R., Lee, W. M., Quasius, A. F., 3233. Stromberg, R. R., Lee, W. M., Quasius, A. F., Newman,

S. B., Reinhart, F. W., 3151. Stromberg, R. R., Lee, W. M., Shereshefsky, J. L., J

65A1-82, 51 (1961); J 66A5-178, 439 (1962). Stromberg, R. R., McCrackin, F. L., Passaglia, E., Steinberg, H. L., J 67A4-227, 363 (1963). Stromberg, R. R., Passaglia, E., J 68A6-307, 601 (1964). Stromberg, R. R., Passaglia, E., Tutas, D. J., J 67A5-

232, 431 (1963); (1964) M256, p. 281. Stromberg, R. R., Tutas, D. J., Passaglia, E., 6408;

6654. Stumpers, F. L. H. M., J 68D9-391, 923 (1964). Sturrock, P. A., J 66D2-182, 153 (1962). Stutman, J. M., Posner, A. S., Lippincott, E. R., 3571. Stutterheim, A7

., (1962) Paper VIII-S1, Mono.43, Vol.

II, p. 1035. Suddeth, J. A., Branscomb, L. M., Shuler, K. E., (1961) TN116 (PB161617).

Suddeth, J. A., Fowler, H. A., Marton, L., Simpson, J. A., 4061. Suddeth, J. A., Horl, E. M., 3994. Suddeth, J. A., Leder, L., 3460. Suddeth, J. A., Marton, L., Leder, L. B., Marton, C,

Mendlowitz, H., Simpson, J. A., Wagner, M. D., 3459. Suddeth, J. A., Marton, L., Simpson, J. A., Leder, L. B., 5099. Sugar, G. R., J 64D5-85, 493 (1960) ; 6329. Sugar, G. R., Carpenter, R. J., Ochs, G. R., J 64D5-86,

495 (1960). Sugar, G. R., Hornback, C. E., Breyfogle, L. D., (1960) TN86 (PB161587).

Sugar, G. R., Sullivan, K. W., J 66D1-179, 113 (1962) ; (1960) TN79 (PB161580).

Sugar, J., J 66A4-166, 321 (1962); 5198; 6600; 6683;

6737. Sugar, J., Kaufman, V., 9031. Sugar, J., Reader, J., 6814; 6894; 6895.

Sin/dat, T. il/., Broida, H. P., Schiff, H. I., 4196. Sugden, T. M., Schiff, H. I., 3769

Sugiura, M., J 69D8-545, 1133 (1965).

Sulikoivski, J. P., (1962) Paper IV-S8, Mono.43, Vol.

I, p. 527. Sullivan, K. W., Little, C. G., Schiffmacher, E. R., Chivers, H. J. A., 6663.

Sullivan, K. W'., Sugar, G. R., J 66D1-179, 113 (1962) ; (1960) TN79 (PB161580).

Sunner, S., Johnson, W. H., 5760. Sutton, L. E., 5141. Sutton, L. E., Malitson, I. H., Cleek, G. W., Stavroudis,

0. N., 5408. Sutton, L. E., Stavroudis, O. N., 4090 ; 4259. Suvorova, F. F., Bozhenov, P. I., Kavlerova, V. I., Sal- nikova, V. S., (1962) Paper III-S12, Mono.43, Vol.

1. p. 327. Suzukawa, Y., Sasaka, T., (1962) Paper II-S3, Mono.

43, Vol. p. 83. Suzuki, I., Sh inxmoitch i, T., 6864. Swain, G. R., J 69D4-501, 659 (1965). Swanson, H. E., 3230. Swanson, H. E., Cook, M. I., Evans, E. H., deGroot,

J. H., (1960) C539, Vol. 10. Swanson, H. E., Morris, M. C, Evans, E. H., Ulmer, L., (1964) Mono.25, Sec. 3. Swanson, H. E., Morris, M. C, Stinchfield, R. P., Evans,

E. H., (1962) Mono.25, Sec. 1; (1963) Mono.25,

Sec. 2. Swanson, H. E., Switzer, G., 3703. Swanson, N., 6242. Swanson, A7 ., Marton, L., Simpson, J. A., Fowler, H. A., 4844. Swanson, A7

., Powell, C. J., 5345. Swarm, H. M., Tyras, G., Ishimaru, A., J 67D5-282, 501

(1963). Swartzendruber, L. J., (1964) TN199; (1964) TN241;

4289; 5203; 6082. Sweeney, R. F., Rose, A., Hoover, T. B., Schrodt, V. A7

., 3540A. Sweeney, W. T., 3547. Sweeney, W. T., Burns, C. L., 4049; 6105. Sweeney, W. T., Caul, H. J., Longton, R., Paffenbarger,

G. C, 5312. Sweeney, W. T., Hartley, J. L., Hudson, D. C, Dickson,

G., 2197A. Sweeney, W. T., Miller, W. A. C, Jr., Hansen, W. C,

Dickson, G., 3713; 3730. Sweeney, W. T., Paffenbarger, G. C, Stanford, J. W., 3420; 4476. Sweeney, W. T., Paffenbarger, G. C, Woelfel, J. B., 4587; 8995. Sweeney, W. T., Stanford, J. W., Paffenbarger, G. C,

6109. Sweeney, W. T., Stanford, J. W., Weigel, K. V., Paffenbarger, G. C, 3481. Sweeney, W. T., Woelfel, J. B., Paffenbarger, G. C,

3504; 3993; 4586; 5676; 5073; 6637. Sweezy, W. B., Bean, B. R., J 67D2-250, 139 (1963). Sweezy, W. B., Bean, B. R., Dutton, E. J., Frank, V. R., Lane, J. A., 5159. Sweezy, W. B., Bean, B. R., Dutton, E. J., Lane, J. A., J 67D6-293, 605 (1963). Swenson, G. W., Jr., Yeh, K. C, J 68D8-386, 881 (1964). Swerling, P., J 64D6, 674 (1960). Swerling, P., Kay, I., J 68D9-405, 1035 (1964). Swift, C. T., Knop, C. M., J 69D3-482, 447 (1965).

Swift, D. W., J 66D6-226, 663 (1962). Swift, D. W., Fricker, S. J., Ingalls, R. P., Mason, W.

C, Stone, M. L., J 64D5-81, 455 (1960). 463
Swindells, J. F., (1965) Mono.90; (1963) M248, p. 25;

4147. Swindells, J. F., Stimson, H. F., Wilson, R. E., 5729. Swindells, J. F., Ullman, R., Mark, H., 3178. Switzer, G., Swanson, H. E., 3703. Switzer, P., (1965), M269, p. 163. Sydoriak, S. G., Roberts, T. R., Sherman, R. H., J 68A6-

302, 559 (1964) ; J 68A6-303, 567 (1964). Sydoriak, S. G., Sherman, R. H., J 68A6-301, 547

(1964). Sydoriak, S. G., Sherman, R. H., Roberts, T. R., J 68A6-

304, 579 (1964). Synder, C. F., Frush, H. L., Isbell, H. S., Thompson A., Wolfrom, M. L., 4820.

Sze, W. C, J 69C4-206, 257 (1965).

Sze, W. C, Dunn, A. F., Zapf, T. L., 6595.

Sze, W. C, Harris, F. K., Kusters, N. L., Petersens, 0., Moore, W. J. M., 5913. Szwarc, R., Plante, E. R., J 70A2-393, 175 (1966). Szwarc, R., Plante, E. R., Diamond, J., J 69A5-363,

417 (1965). T

Taback, L., Marden, E. C, Mason, H. L., Pipberger, H. V., 3182. Taback, L., Pipberger, H. V., Fries, E. D., Mason, H. L., Taft, R. W., Jr., hide, D. R., Jr., Love, P., 3255. Taggart, H. E., 6756. Taggart, H. E., Jean, A. G., Wait, J. R., J 65C3-70, 189

(1961) . Tax, C. T., J 67D2-256, 199 (1963) ; J 68D4-359, 466

(1964) ; J 69D3-477, 401 (1965). Takagi, S., Yaynaguchi, G., Takemote, K., Uchikawa,

H., (1962) Paper IV-S4, Mono.43, Vol. I, p. 495. Takayanagi, K., Geltman, S., 6061; 6747. Takeda, S., McLane, C. K., Thompson, R. C., Thomas, W. E., Jr., 6728. Takeda, S., Tsukishima, T., (1965) TN256.

Takemote, K., Yamaguchi, G., Uchikawa, H., Takagi,

S., (1962) Paper IV-S4, Mono.43, Vol. I, p. 495. Takuma, H., Jennings, D. A., 5951; 6271; 6404; 6628. Tamir, T., Wang, H. C, J 69B1&2-141, 101 (1965). Tamura, T., Wagner, R., Miller, P. D., Marshak, H., 6807. Tanaka, I., Carrington, T., Broida, H. P., 4226. Tanaka, I., Broida, H. P., 4607. Tanaka, I., Hampson, R. F., McNesby, J. R., Akimoto,

H., 6204. Tanaka, I., McNesby, J. R., 4835. Tanaka, I., McNesby, J. R., Okabe, H., 5112. Tanenbaum, B. S., Croley, D. R., Jr., J 69D6-514, 819

(1965) . Tang, T. W., Wetzel, L., J 69D4-494, 599 (1965). Tanner, R. L., Harris, F. B., Jr., J 66D4-208, 463

(1962) . Tan Tik-Ien, A., Schwiete, H. E., (1962) Paper IV-S10, Mono.43, Vol. 1, p. 545. Tanttila, W. H., Dcnison, A. B., James, L. W., Currin,

J. D., Mohler, R. J., 6517.

Tnntilla, W. II., Mahler, R. J., 9124. Tao, K., (1961) TN87 (PB161588) ; 4457; 4812. Tao, K., Wait, J. R., 4889. Taplin, J. H., (1962) Paper III-S3, Mono.43, Vol. I, p. 263. Tary, J. J., Florman, E. F., (1962) TN100; 5641. Tate, D. R., J 70C2-225, 149 (1966) ; 3850. Tauber, S. J., J 67A6-245, 591 (1963) ; 6693. Tauber, S. J., Fraction, G. F., Hayward, H. W'., 6633. Tauber, S. J., Hayward, H. W'., Sneed, H. M. S., Turnipseed, J. H., 9018. Taupin, G., Wyckoff, H. O., Allisy, A., Aston, G. H., Barnerd, G. P., Hubner, W'., Loftus, T., 5416. Taussky, O., J 65B1-43, 15 (1961) ; 94A; 1081. Taussky, O., Pall, G., 2027A.

Taylor, D. F., Burns, C. L., J 67A1-195, 55 (1963). 464

Taylor, D. F., Demaree, N. C., 4864. Taylor, D. F., Perkins, R. R., Kumpula, J. W., 4517. Taylor, E. C., J 69D5-509, 735 (1965).

Taylor, H. F. W., (1962) Paper III-2, Mono.43, Vol. I, p. 167. Taylor, H. F. W'., Aitken, A., (1962) Paper III-S6, Mono.43, Vol. I, p. 285. Taylor, H. F. W'., Percival, A., Battler, F. G., (1962), Paper III-S5, Mono.43, Vol. I, p. 277. Taylor, J. K., (1965) TN273; 3509; 5199; 6296; 6871. Taylor, J. K., Durst, R. A., J 68A6-310, 625 (1964);

J 69A6-372, 517 (1965).

Taylor, J. K., Knipling, P., Smith, F., 3726. Taylor, J. K., Maienthal, E. J., 6362; 6687. Taylor, J. K., Maienthal, E. J., Marinenko, G., 6723. Taylor, J. K., Marinenko, G., J 67A1-192, 31 (1963) ; J 67A5-234, 453 (1963); J 70C1-214, 1 (1966);

6778. Taylor, J. K., Murphy, T. J., 8951. Taylor, J. K., Tilton, L. W., 4272. Taylor, J. K., Weise, E. L., Burke, R. W'., 6768. Taylor, J. K., Young, J. A., 3466; 3997. Taylor, L. S., 152A; 251A; 3714; 3735; 3767; 3838; 4252B; 4872; 4875; 5587; 5595; 5610; 6512; 8936. Taylor, L. S., Ney, W. R., (1961) TN92 (PB161593).

Taylor, T. T., J 64B3-30, 135 (1960); J 64B4-35, 199

(1960).

Taylor, W. J., 721A.

Taylor, W. L., J 64D4-68, 349 (1960) ; J 67D5-286, 539

(1963) ; 3907; 6829. Taylor, W. L., Jean, A. G., 5850. Taylor, W. L., Jean, A. G., Wait, J. R., 3908. Tayman, W. P.. Washer, F. E., J 64C3-39, 209 (1960); J 65C3-71, 195 (1961) ; 3604. Tchen, C. M., 3239; 4140; 4524; 4726; 5568; 6405; 9032. Tech, J. L., J 67A6-238, 505 (1963) ; J 67A6-239, 555

(1963). Tech, J. L., Corliss, C. H., J 65A3-99, 167 (1961). Tech, J. L., Garstang, H. H., J 69A5-361, 401 (1965). Tech, J. L., Martin, W. C., 4067. Tech, J. L., Meggers, W. F., 3818.

Teele, R. P., 3585; 4897.

Tetft, W. E., J 64B4-39, 237 (1960).

Tefft, W. E., Spinner, S., J 65A3-99, 167 (1961); J

66A2-153, 193 (1962) ; 3932.

Tefft, W. E., Wachtman, J. B., Jr., Lam, D. G., Jr., J 66A6-181, 465 (1962); 4414.

Tefft, W. E., Wachtman, J. B., Jr., Lam, D. G., Jr., Epstein, W. S., 4084.

Tefft, W. E., Wachtman, J. B., Jr., Lam, D. G., Jr., Stinch field, R. P., 3514. Temkin, A., 3122. Temkin, A., Lamkin, J. C., 3977. Temura, T., Marshak, H., Wagner, R., Miller, P. P., 6453. Tenenbaum, M., Furukawa, G. T., Reilly, M. L., Piccirelli, J. H., J 68A4-285, 367 (1964). Tenenbaum, M., Howard, F. L., J 66A3-160, 255

(1962).

Tepley, L., J 69D8-542, 1089 (1965). Termini, D. J., Glasgow, A. R., J 66A2-152, 189 (1962). Termini, D. J., Ross, G. S., Dixon, H. D., Frolen, L., 5577. Thaxter, R. T., Hubbe, P. D., Mandel, J., 5243. Thayer, G. D., J 65D2-117, 181 (1961). Thayer, G. D., Bean, B. R., J 67D3-262, 273 (1963); 3476A; 5250; 6418. Thayer, G. D., Bean, B. R., Cahoon, B. A., J 64D5-84, 487 (1960). Thayer, G. D., Dutton, E. J., (1961) TN97 (PB161-

598). Thayer, G. D., Misme, P., Bean, B. R., 3652. Theiscn, J. F., Gossard, E. E., J 65D2-112, 149 (1961). Thekaekara, M. P., Kiess, C. C., 3297. Thibault, R. J., Jaffe, J. H., Plyler, E. K., J 67A2-198,

113 (1963).
Thibault, R. J., James, T. C, 6311; 6387; 6800. Thibault, R. J., Lafferty, W. J., 6114. Thibault, R. J., Maki, A. G., Plylcr, E. K., J 67A3-207, 219 (1963); 4696; 5216; 6529. Thibault, R. J., Plyler, E. K., J 66A5-177, 435 (1962) ; J 67A3-209, 229 (1963).

Thiers, R. E., Margoshes, M., Vallee, B. L., 3300. Thomas, A., 3998. Thomas, A. M., Johnson, D. P., Little, J. W., 4569. Thomas, C. T., Lamb, V. A., 5431. Thomas, D. B., J 66C3-101, 255 (1962) ; J 67C4-146, 337 (1963) ; 5712. Thomas, J. A., J 68D4-357, 419 (1964). Thomas, J. A., Mclnnes, B. A., J 68D11-429, 1251

(1964). Thomas, J. 0., Long, A. R., J 67D1-245, 79 (1963). Thomas, R. N., 3868; 4004; 4047; 4202; 5158; 5240;

6207; 6641; 9015. Thomas, R. N., Branscomb, L. M., 4725. Thomas, R. N., Jefferies, J. T., 3308; 3869; 3922. Thomas, R. N., Jefferies, J. T., Pecker, C, 5053. Thomas, R. N., Pecker, C, 4252A; 4643; 4919; 5617;

8948. Thomas, R. N., Pottasch, S. R., 3887. Thomas, R. N., Zirker, J. B., 4027; 4028. Thomas, W. E., Jr., McLane, C. K., Takeda, S., Thompson, R. C, 6728. Thompson, C. L., 6562. Thompson, G. N., 1130A; 1732A. Thompson, J. P., 3452. Thompson, M. C., Jr., J 64D6, 605 (1960) ; 4831; 6050;

6589. Thompson, M. C., Jr., Freethey, F. E., Waters, D. M.,

3201. Thompson, M. C., Jr., Gates, D. M., Vetter, J., 5466. Thompson, M. C., Jr., Grant, W. B., 6888. Thompson, M. C., Jr., Janes, H. B., J 68D11-426, 1229

(1964); (1964) TN219.

Thompson, M. C., Jr., Janes, H. B., Freethey, F. E., 3441. Thompson, M. C., Jr., Janes, H. B., Kirkpatrick, J., 3423. Thompson, M. C., Jr., Norton, K. A., Barrows, E. C., Janes, H. B., 5117. Thompson, M. C, Jr., Norton, K. A., Herbstreit, J. W.,

Janes, H. B., Hornberg, K. O., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Wells, P. I., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33. Thompson, M. C., Jr., Vetter, M. J., 4464. Thompson, M. C., Jr., Waters, D. M., Smith, D., 4851. Thompson, R. C., McLane, C. K., Takeda, S., Thomas, W. E., Jr., 6728. Thompson, T. W., J 69D12-620, 1667 (1965). Thompson, W. A., Jr., J 66B4-82, 161 (1962) ; 5584. Thompson, W. A., Willke, T. A., 5529. Thompson, W. E., Jacox, M. E., Milligan, D. E., Moll, N. G., 6848. Thorensen, E., 649A. Thome, K. S., J 69D12-589, 1557 (1965). Thornton, H. R., Moore, D. G., Eubanks, A. G., Hayes, W. D., Jr., Crigler, A. W., 4324. Thorvaldson, T., Birss, F. W., McCurdy, K. G., (1962) Paper III-S10, Mono.43, Vol. I, p. 315. Thrush, B. A., Mann, D. E., 3678. Thrush, B. A., Mann, D. E., Lide, D. R., Ball, J. J., Acquista, N., 4304. Thurber, W. R., Frederikse, H. P. R., Hosier, W. R., 6035. Thurber, W. R., Mante, A. J. H., 9106.

Tibbals, M. L., Hanselman, J. C., Casselman, C. J., Bickel, J. E., J 68D1-308, 11 (1964). Tidstrom, K. D., Klebanoff, P. S., 3206. Tidstrom, K. D., Klebanoff, P. S., Sargent, L. M., 5063.

Tidwell, E. D., Agar, D., Plyler, E. K., J 66A3-161,

259 (1962).

Tidwell, E. D., Benedict, W. S., Plyler, E. K., 3909.

Tidwell, E. D., Lafferty, W. J., Plyler, E. K., 4695.

Tidwell, E. D., Maki, A. G., Plyler, E. K., J 66A2-147,

163 (1962).

Tidwell, E. D., Plyler, E. K., 3863; 4682; 4697.

Tidwell, E. D., Plyler, E. K., Benedict, W. S., 3910;

4467.

Tidwell, E. D., Plyler, E. K., Maki, A. G., J 68A1-255,

79 (1964).

Tidwell, E. D., Plyler, E. K., Wiggins, T. A., 5649.

Tidwell, E. D., Wiggins, T. A., Plyler, E. K., 4125.

Tien, P. K., Heffner, H., J 64D6, 751 (1960) ; J 64D6,

755 (1960). Tighe, N. J., 6168. Tighe, N. J., Barber, D. J., J 69A3-346, 271 (1965);

6730. Tighe, N. J., Haynes, W. D., Jr., Kirkpatrick, H. B., 4857.

Tilley, W. R., 5653.

Tilton, L. W., J 65A2-94, 117 (1961) ; 3796.

Tilton, L. W., Taylor, J. K., 4272. Timmerhaus, K. D., 4736; 5904. Timmerhaus, K. D., Dean, J. W., 5819. Timmerhaus, K. D., Drayer, D. E., 4483. Timmerhaus, K. D., Drayer, D. E., Dean, J. W., 3969. Timmerhaus, K. D., McCarty, R. D., Stewart, R. B., 5603. Timmerhaus, K. D., Stewart, R. B., 6435. Timmermans, J., Glasgow, A. R., 4233; 4300. Tipson, R. S., (1965) Mono.87; 4193; 4327. Tipson, R. S., Cohen, A., 5670; 6580A.

Tipson, R. S., Isbell, H. S., J 64A5-65, 405 (1960) ; J 65A1-81, 31 (1961); J 65A3-109, 249 (1961); J 66A1-139, 31 (1962) ; 3119; 4611. Tipson, R. S., Isbell, H. S., Hague, J. L., Scribner, B. F., Smith, W. H., Wade, C. W. R., Cohen, A., (1962) Mono.54.

Tisone, G. C, Branscomb, L. M., Smith, S. J., 8932.

Titus, W. F., 3356A.

Todd, J., J 65B1-44, 19 (1961). Tohomatsu, T., Roach, F. E., 5022.

Tolbert, C. W., Britt, C. 0., Straiton, A. W., J 65D1-98,

15 (1961). Tomes, L. A., Hunt, C. M., J 66A6-182, 473 (1962). Tomes, L. A., Hunt, C. M., Pike, R. G., Hubbard, D., 4591; 4596. Tomlinson, R. G., J 69D11-576, 1431 (1965). Tompkins, C. B., 1621A.

Toner, S. D., Plitt, K. F., 3952; 4930. Topping, G., Millen, D. J., Lide, D. R., Jr., 4769. Torgensen, J. L., Deslattes, R. D., Paretzkin, B., Horton, A. T., 8955. Torgesen, J. L., Horton, A. T., 5324. Torgesen, J. L., Horton, A. T., Saylor, C. P., J 67C1-

116, 25 (1963). Torgesen, J. L., Jackson, R. W., 6775. Torgesen, J. L., Peiser, H. S., 6671. Torgesen, J. L., Strassburger, J., J 67A4-224, 347

(1963); 6106. Toropov, N. A., (1962) Paper II-S7, Mono.43, Vol. I, p. 113. Tosini, P. C, Levin, B. M., Stark, M. C, 3718; 4236. Toth, R. A., Lafferty, W. J., Lide, D. R., 6799. Toth, R. A., Maki, A. G., 6801. Touloukian, Y. S., Cezairliyan, A., 6662. Touloukian, Y. S., Hilsenrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Hoge, H. J., Masi, J. R., Nuttall, R. L., Wolley, H. W., 3806. Toupin, R., Truesdell, C, 3820. Tousey, R., Malitson, H. H., Purcell, J. D., Moore,

C. E., 3867. Towne, K. M., Smith, J. C, Blandford, J. M., 4945.465
Towne, K. M., Smith, J. C, Blandford, J. M., Shouse,

P. J., 4946. Towne, K. M., Smith, J. C, Shouse, P. J., Blandford,

J. M., 4318. Travis, R. E., (1963) M248, p. 181. Treacy, E. B., Beers, Y., 5006. Trees, R. E., 3243; 3608; 4278; 5508; 6081. Trees, R. E., Jorgensen, C. K., 4214. Trembath, C. L., Estin, A. J., Wells, J. S., Daywitt, W. C, 3414; 4463. Trent, H. M., J 69B1&2-136, 79 (1965).

Tressler, R. E., Schneider, S. J., Waring, J. L., J 69A3-

343, 245 (1965). Troitskaya, V. A., Gendrin, R. E., J 69D8-543, 1107

(1965).

Troitsky, V. S., J 69D12-603, 1585 (1965).

Truesdell, C, J 67B2-95, 85 (1963); J 67B3-98, 141 (1963) ; 3237; 3653; 3919; 4755; 4908.

Truesdell, C, Kanwal, R. P., 3515.

Truesdell, C, Toupin, R., 3820. Trumbo, J. T., Bloss, R. L., 4172; 5142. Tryon, M., Brown, J. E., Mandel, J., 5286. Tryon, M., Horowitz, E., 4694; 5101; 5479. Tryon, M., Horowitz, E., Christensen, R. G., 9115. Tryon, M., Linnig, F. J., Parks, E. J., 4188. Tryon, M., Strassburger, J., Brauer, G. M., Forziati, A. F., 3427. Tryon, M., Tyler, W. P., 5197; 5651. Tryon, M., Wall, L. A., 4823. Tryon, M., Wall, L. A., Antonucci, J. M., Straus, S., 4025.

Tsai, D. H., 6072.

Tsai, D. H., Cassidy, E. C., J 67C1-120, 65 (1963);

4043.

Tsai, D. H., Masi, J. F., 4860.

Tsai, D. H., Park, J. H., 4513. Tsang, W., 5958; 6499; 6500; 6676; 9108. Tschiegg, C. E., 1847A.

Tschiegg, C. E., Greenspan, M., 1771A; 4440; 4503;

5931. Tschiegg, C. E., Hayes, E. E., 3357. Tsukishima, T., McLane, C. K., J 69D3-475, 389 (1965). Tsukishima, T., Takeda, S., (1965) TN256.

Tuan, H. S., Seshadri, S. R., J 69D5-511, 767 (1965). Tubiana, M., Pruitt, J. S., Allisy, A., Joyet, G., Pohlit, W., Zupancic, C, J 66C2-91, 107 (1962). Turek, P., Pfleger, J., Schmidt-Rohr, U., Zuckschwerdt,

W., 5364. Turner, J. E., Fano, U., 5975. Turnipseed, J. H., Hayward, H. W., Sneed, H. M. S., Tauber, S. J., 9018.

Turriziani, R., Rio, A., (1962) Paper VIII-S4, Mono.43,

Vol. II, p. 1067. Tutas, D. J., Stromberg, R. R., Passaglia, E., J 67A5-

232, 431 (1963); (1964) M256, p. 281; 6408; 6654. Tutte, W. T., J 69B1&2-131, 1, (1965) ; J 69B1&2-132,

49 (1965). Tveten, L. H., J 65D2-109, 115 (1961) ; 4150. Tveten, L. H., Bateman, R., Finney, J. W., Smith,

E. K., Watts, J. M., 3362. Twersky, V., J 64D6, 715 (1960). Twersky, V., Burke, J. E., J 68D4-359, 500 (1964).

Tyler, W. P., Tryon, M., 5197, 5651. Tyras, G., Bargeliotes, P. C, Hamm, J. M., Schell, R. R., J 69D6-516, 839 (1965). Tyras, G., de Marchin, P., J 69D4-489, 529 (1965). Tyras, G., Ishimaru, A., Swarm, H. M., J 67D5-282, 501

(1963). u

Oberall, H., J 68D6-373, 749 (1964). Uchikawa, H., Yamaguchi, G., Takemote, K., Takagi,

S., (1962) Paper IV-S4, Mono.43, Vol. I, p. 495.

Ugiansky, G. M., Logan, H. L., 9121.

Uhlig, R., Wyckoff, J. M., Koch, H. W., Ziegler, B., 9117. Uhlig, R. P., J 68A4-288, 401 (1964). Ullman, R., Swindells, J. F., Mark, H., 3178. Ulmer, L., Swanson, H. E., Morris, M. C, Evans, E. H., (1964) Mono.25, Sec. 3. Ulwick, J. C., Pfister, W., J 69D9-555, 1219 (1965). Unruh, H., Jr., (1966) TN327; (1964) TN328.

Urban, G. H., Stevens, M. E., (1965), M269, p. 213;

6509. Urban, W. D., Hahn, W. R., Jr., Skramstad, H. K., 3373A. Urban, W. D., Skramstad, H. K., Hahn, W. R., 3473. Uriano, G. A., Streever, R. L., 6234; 6898; 6899; 8900. Utech, H. P., Bennett, J. A., Holshouser, W. L., 5761. Utech, H. P., Holshouser, W. L., 4051. Utlaut, W. F., J 65D2-115, 167 (1961); (1962) TN139

(PB161640) ; 4076. v

Vacher, H. C., Bechtoldt, C. J., 4267. Vacher, H. C., Burnett, H. C., Duff, R. H., J 66C2-92,

113 (1962); 3901. Vacher, H. C., Newton, C. J., J 65C1-55, 57 (1961).

Valentine, D. R., Lamb, V. A., 8942.

Vallee, B. L., Thiers, R. E., Margoshes, M., 3300. VanAardt, J. H. P., (1962) Paper VI-S1, Mono.43,

Vol. II, p. 835. Van Allen, J. A., O'Brien, B. J., Roach, F. E., Gartlein, C. W., 3486; 4018. Vander Arend, P. C., Chelton, D. B., 6458; 6459. Van Brunt, R. J., Wacks, M. E., 6028. Van de Houten, J. R., (1963) M248, p. 217. Van der Laan, H., Nicholls, R. W., 3400. Van der Zeil, A., J 68D5-365, 660 (1964). Van Dyke, J., J 68B2-119, 67 (1964). Van Gundy, D. A., McClintock, R. M., Kropschot, R. H., 3244. Van Gundy, D. A., Mullen, L. P., Jacobs, R. B., 3403. Van Valkenburg, A., J 65A5-122, 415 (1961) ; J 68A1-

257, 97 (1964); 3805; 5125; 5386. Van Valkenburg, A., Lippincott, E. R., Weir, C. E., 3582. Van Valkenburg, A., Lippincott, E. R., Weir, C. E., Bunting, E. N., 3799. Van Valkenberg, A., Powers, J., 5547; 6298. Van Valkenburg, A., Weir, C. E., Lippincott, E., 4821. Van Valkenburg, A., Whatley, L. S., Lippincott, E. R., Weir, C. E., 6273. Van Vlack, L. H., (1965) M257, Paper 1, p. 1. VavZandt, T. E., J 68D5-362, 569 (1964); 6159. VanZandt, T. E., Bowles, K. L., 3900. VanZandt, T. E., Calvert, W., Knecht, R. W., 6161. VanZandt, T. E., Calvert, W., Knecht, R. W., Goe,

G. B., 4640; 5342. VanZandt, T. E., Calvert, W., Rishbeth, H., 5908; 6406A. VanZandt, T. E., Hunt, D. C, 4224. VanZandt, T. E., Knecht, R. W., 5671; 6482. VanZandt, T. E., Knecht, R. W., Rishbeth, H., 6250. VanZandt, T. E., Knecht, R. W., Russell, S., 4089. VanZandt, T. E., Knecht, R. W., Watts, J. M., 5023;

5162. VanZandt, T. E., Norton, R. B., 6439. VanZandt, T. E., Norton, R. B., Denison, J. S., 4426;

5144. VanZandt, T. E., Norton, R. B., Stonehocker, G. H., 3709. VanZyl, B., Dunn, G. H., Zare, R. H., 6706. Vasicek, A., (1964) M256, p. 25. Vaughan, D. A., Dettorre, J. F., Knorr, T. G., (1964) M256, p. 245. 466
Verbeek, G., Copeland, L. E., Kantro, K. L., (1962) Paper IV-3, Mono.43, Vol. I, p. 429. Vestal, M. L., Rosenstock, H. M., 4210.

Vetter, M. J., 6831A.

Vetter, M. J., Gates, D. M., Thompson, M. C, Jr., 5466.

Vetter, M. J., McGavin, R. E., 8973.

Vetter, M. J., Norton, K. A., Herbstreit, J. W., Janes, H. B., Hornberg, K. O., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Wells, P. I., Thompson, M. C. Jr., Kirkpatrick, A. W., (1961) Mono.33.

Vetter, M. J., Thompson, M. C., Jr., 4464.

Victor, A. C., 4617; 5004.

Victor, A. C., Douglas, T. B., J 65C1-56, 65 (1961);

J 65A2-92, 105 (1961); J 67A4-221, 325 (1963).

Victor, A. C., Furukawa, G. T., Douglas, T. B., Saba, W. G., J 69A5-364, 423 (1965).

Vieth, D. L., Yakowitz, H., J 69C3-201, 213 (1965).

Vieth, D. L., Yakowitz, H., Heinrich, K. F. J., Michaelis, R. E., (1965) M260-10.

Villa, J. J., Cleek, G. W., Hahner, C. H., 3293.

Villard, O. G., Jr., Shapley, A. H., 4284. Villeneuve, A. T., Harris, J. H., Broca, L. A., J 69D10-

567, 1335 (1965). Vinciguerra, R., Latmiral, G., Franceschetti, G., J 67D3-267, 331 (1963).

Vinti, J. P., J 65B2-52, 131 (1961); J 65B3-56, 169 (1961); J 66B1-68, 5 (1962); J 67B4-103, 191

(1963) ; J 70B1-165, 1 (1966); J 70B1-166, 17 (1966) ; 3265; 4092; 5797.

Vinti, J. P., hanger, R. M., J 67C3-135, 247 (1963).

Vivian, H. E., (1962) Paper VII-1, Mono.43, Vol. II, p. 909. Voge, J., du Castel, F., Spizzichino, A., Misme, P., J 66D3-195, 273 (1962).

Vogler, L. E., J 65D4-144, 397 (1961); J 67D1-238,

5 (1963); J 68D7-379, 819 (1964); (1964) Mono.

85; TN215; 5453; 5882. Volger, L. E., Noble, J. L., J 67D5-289, 567 (1963);

(1964) Mono.72; (1963) TN175.

Vogler, L. E., Pappas, C. F., Rice, P. L., J 65D2-116,

175 (1961). Volland, H., J 65D4-139, 357 (1961); J 68D2-337, 225

(1964) . Vosburgh, W. C., Bates, R. G., 5971. Vroman, L., (1964) M256, p. 335. Vural, A. M., Cheng, D. K., J 68D4-353, 355 (1964). w

Wachtman, J. B., Jr., 5471. Wachtman, J. B., Jr., Corwin, W. C., J 69A5-367, 457

(1965) . Wachtman, J. B., Jr. Doyle, L. R., 6148. Wachtman, J. B., Jr., Franklin, A. D., Shorb, A., J 68A5-290, 425 (1964). Wachtmayi, J. B., Jr., Macedo, P. B., Capps, W., Jr.,

. 6016. Wachtman, J. B., Jr., Maxwell, L. H., 3317. Wachtman, J. B., Jr., Peiser, H. S., Dickson, R. W.,

J 67A5-229, 395 (1963); J 69A2-340, 193 (1965);

J 69A4-351, 309 (1965); 4964. Wachtman, J. B., Jr., Peiser, H. S., Levine, E. P., J 67A4-216, 281 (1963). Wachtman, J. B., Jr., Peiser, H. S., Munley, F. A., McCleary, L. C, J 69A5-368, 461 (1965). Wachtman, J. B., Jr., Scuderi, T. G., Cleek, G. W.,

4730. Wachtman, J. B., Jr., Spinner, S., J 68A6-316, 669

(1964). Wachtman, J. B., Jr., Tefft, W. E., Lam, D. G., Jr., J 66A6-181, 465 (1962) ; 4414. Wachtman, J. B., Jr., Tefft, W. E., Lam, D. G., Jr., Epstein, W. S., 4084.

Wachtman, J. B., Jr., Tefft, W. E., Lam, D. G., Jr., Stinchfield, R. P., 3514. Wachtman, J. B., Jr., Wlieat, M. L., Marzullo, S., J 67A2-205, 193 (1963). Wacker, P. F., 3217. Wacker, P. F., Mizushima, M., Petersen, J. D., Ballard,

J. R., (1964) Mono.70, Vol. I. Wacks, M. E., J 68A6-311, 631 (1964); 6027; 6088;

6194. Wacks, M. E., Krauss, M., 4095. Wacks, M. E., Van Brunt, R. J., 6028. Wade, C. W. R., Isbell, H. S., Tipson, R. S., Hague,

J. L., Scribner, B. F., Smith, W. H., Cohen, A., (1962) Mono.54. Wagnian, D. D., Evans, W. H., Halow, I., Dudley, R. M., 5728. Wagman, D. D., Evans, W. H., Halow, I., Parker, V. B., Bailey, S. M., Schumm, R. H., (1965) TN270-1;

(1966) TN270-2. Wagman, D. D., Gilliland, A. A., J 69A1-320, 1 (1965). Wagner, C. A., Balser, M., J 64D4-76, 415 (1960). Wagner, M. D., Marton, L., Leder, L. B., Marton, C,

Mendlowitz, H., Simpson, J. A., Suddeth, J. A., 3459. Wagner, R., Miller, P. D., Tamura, T., Marshak, H., 6807. Wagner, R., Marshak, H., Miller, P. P., Temura, T., 6453. Wainright, A. E., Barnes, J. A., Allan, D. W'., 4979. Wait, J. R., J 65B2-53, 137 (1961); J 68B3-125, 119 (1964); J 64D4-72, 387 (1960); J 64D6, 647

(1960) ; J 65D1-101, 37 (1961); J 65D4-145, 401

(1961) ; J 65D5-154, 481 (1961); J 66D1-173, 53 (1962) ; J 66D4-207, 453 (1962); J 66D5-213, 509

(1962) ; J 66D5-216, 563 (1962) ; J 67D3-264, 297

(1963) ; J 67D4-271, 375 (1963) ; J 67D6-295, 617

(1963) ; J 68D1-319, 79 (1964); J 68D1-320, 81 (1964) ; J 68D3-344, 291 (1964); J 68D4-259, 463 (1964); J 68D8-389, 907 (1964); J 68D7-381, 846

(1964) ; J 68D10-412, 1127 (1964); J 68D10-413,

1137 (1964); J 68D11-419, 1187 (1964); J

69D2-461, 247 (1965) ; J 69D4-492, 567 (1965) ; J 69D6-518, 865 (1965); J 69D7-531, 969 (1965); J 69D8-539, 1057 (1965) ; J 69D11-572, 1387

(1965) ; J 69D11-579, 1465 (1965); J 69D12-624,

1691 (1965); (1962) TN151; (1963) TN182;

(1964) TN208; (1964) TN223; 2597A; 3122A;

3199; 3225; 3226; 3284; 3349A; 3377; 3503; 3578; 3679; 3682; 3685; 3690; 3695; 3727; 3728;

3828; 3923; 3925; 4002; 4081; 4203; 4207; 4351;

4352; 4434; 4505; 4531; 4620; 4623; 4642; 4713;

4809; 5035; 5120; 5121; 5127; 5151; 5153; 5191;

5242; 5244; 5325; 5586; 5646; 5782; 5804; 5851;

5950; 6247; 6261; 6326; 6347; 6377; 6473; 6511; 6625; 6822; 6872; 6881; 8908; 8909; 8961. Wait, J. R., Bahar, E., J 69D11-578, 1445 (1965). Wait, J. R., Collett, L. S., 3169A.

Wait, J. R., Collett, L. S., Brant, A. A., Bell, W. E., Ruddock, K. A., Siegel, H. O., 3239A.

Wait, J. R., Conda, A. M., 2665 A, 3680; 3692; 3733;

4281. Wait, J. R., Frische, R. H., Buttlar, H. V., 2525A.

Wait, J. R., Jackson, C. M., J 67D6-296, 625 (1963); J 67D3-268, 347 (1963); J 69D2-467, 299 (1965);

(1963) TN204; 6129. Wait, J. R., Jackson, C. M., Walters, L. C, (1963) TN143 (PB161644).

Wait, J. R., Jean, A. G., 9099. Wait, J. R., Jean, A. G., Lange, L. J., 2172A.

Wait, J. R., Jean, A. G., Murphy, A. C, Wasmundt,

D. F., J 65D5-153, 475 (1961). Wait, J. R., Jean, A. G., Taggart, H. E., J 65C3-70, 189 (1961). Wait, J. R., Jean, A. G., Taylor, W. L., 3908. Wait, J. R., Mientka, W. E., 3155. i67
Wait, J. R., Spies, K. P., J 67D2-254, 183 (1963); J 68D11-428, 1249 (1964); J 69D10-570, 1359

(1965); (1961) TN114 (PB161615) ; (1964) TN

300; 3577; 3937. Wait, J. R., Toa, K., 4889. Wait, J. R., Walters, L. C, J 67D3-270, 361 (1963) ; J 67D5-283, 519 (1963); J 67D6-303, 747 (1963); J 68D1-321, 95 (1964); (1963) Mono.60; (1963) TN205; (1964) TN224; 5273. Wait, S. C, Barnett, M., 3817. Wakefield, J. P., Little, W. E., 5866. Wales, M., Weissberg, S. G., Rothman, S., 4782. Walker, D., J 69D11-577, 1435 (1965) ; 6592. Walker, G. B., LaGrone, A. H., Deam, A. P., J 68D8-

387, 895 (1964). Walker, J. A., Armstrong, G. T., Fano, L., Jessup, R.

S., Marantz, S., Mears, T. W., 4785. Walker, R. F., 3814; 4176; 5107; 6116. Walker, R. F., Carrera, N. J., 5483. Walker, R. F., Carrera, N. J., Plante, E. R., J 68A3-

280, 325 (1964). Walker, R. F., Diamond, J. J., Efimenko, J., Hampson,

R. F., 3741A.

Walker, R. F., Efimenko, J., Lofgren, N. L., 4261. Walker, R. F., Hampson, R. F., J 65A4-113, 289 (1961) ; J 66A2-149, 177 (1962). Walkowicz, J. L., (1963) TN193.

Walkowicz, J. L., Cornog, D. Y., Rose, F. C., (1964) M262-1. Walkup, J. F., Laaspere, T., Johnson, W. C, J 69D3-

478,407 (1965). Wall, A., Antonueci, F. M., 5723. Wall, L. A., 3200A; 3438; 3717; 4045; 4742; 4847;

4868. Wall, L. A., Antonueci, J. M., Straus, S., Tryon, M.,

4025. Wall, L .A., Brown, D. W., 3562; 4096; 5614; 5615;

5616. Wall, L. A., Brown, D. W., Florin, R. E., 3146, 4662. Wall, L. A., Donadio, R. E, Pummer W. J., 3721. Wall, L. A., Fearn, J. E., 5575. Wall, L. A., Fearn, J. E., Pummer, W. J., Lowry, R. E., J 65A3-197, 239 (1961). Wall, L. A., Florin, R. E., J 65A4-117, 375 (1961);

3282; 4739; 4874; 5331; 5371. Wall, L. A., Florin, R. E., Brown, D. W., J 64A4-49,

269 (1960); 3551; 4063; 4667; 5332. Wall, L. A., Florin, R. E., Parker, M. S., J 70A2-387,

115 (1966). Wall, L. A., Flynn, J. H., 4566. Wall, L. A., Hcllmann, M., 4633. Wall, L. A., Ingalls, R. B., 4062; 4070; 4558; 6335. Wall, L. A., Linnig, F. J., Parks, E. J., J 65A1-88, 79

(1961).

Wall, L. A., Pummer, W. J., J 68A3-274, 277 (1964); J 70A3-399, 233 (1966); 4242; 5544. Wall, L. A., Straus, S., J 65A3-105, 221 (1961) ; J 65A3-

106, 227 (1961); J 67A5-237, 481 (1963); 3731;

6323; 6324. Wall, L. A., Tryon, M., 4823. Wall, L. A., Yoshida, T., Florin, R. E., 9045. Wall, L. A., Yu, H., 8978. Wallace, E. M., (1965) M269, p. 225. Wallace, L. D., Hust, J. G., Crim, J. A., Hall, L. A., Stewart, R. B., (1962) TN137 (PB161638).

Wallace, L. R., (1963) M248, p. 139. Wallenstein, M. B., Brady, E. L., (1964) NSRDS-NBS1.

Wallenstein, M. B., Krauss, M., 4129. Waller, J., Klein, R., Scheer, M. D., 3858. Walsh, J. L., Shisha, O., 4384; 5811; 6256. Walsh, P. J., Hilsenrath, J., Ziegler, G. G., Messina, C.

G., Herbold, R. J., (1966) H101.

Walsh, P. N., White, D., Mann, D. E., Sommer, A., 3579" 3580

Walter, 6. H., Lee, W. C. Y., Peters, L., Jr., J 69D2-

457, 227 (1965); J 69D3-470, 349 (1965).

Walters, L. C., Jackson, C. M., Wait, J. R., (1962) TN143 (PB161644).

Walters, L. C., Johler, J. R., J 66D1-177, 101 (1962). Walters, L. C., Johler, J. R., Harper, J. C., Jr., (1960) TN69 (PB161570).

Walters, L. C., Johler, J. R., Lilley, C. M., (1960) TN60 (PB161561).

Walters, L. C., Wait, J. C., J 68D1-321, 95 (1964); J 67D3-270, 361 (1963); J 67D5-283, 519 (1963); J 67D6-303, 747 (1963); (1963) Mono.60; (1963) TN205; (1964) TN224; 5273. Walton, W. W., Hoffman, J. I., 3285. Wang, H. C., Tamir, T., J 69B1&2-141, 101 (1965). Ward, G., Petree, B., (1962) TN163.

Ward, G. D., Gallet, R. M., Richardson, J. M., Wider,

B., Harding, G. N., 3649. Ward, G. D., Richardson, J. M., J 67C2-127, 139 (1963). Ware, W. H., Elbourn, R. D., 4999. Wuring, J. L., 8935. Waring, J. L., Levin, E. M., Robbins, C. R., 4114. Waring, J. L., Roth, R. S., J 65A4-115, 337 (1961) ; J 66A6-180, 451 (1962); J 69A2-333, 119 (1965);

5722; 6167; 6426. Waring, J. L., Roth, R. S., Levin, E. M., 6300. Waring, J. L„ Schneider, S. J., J 67A1-190, 19 (1963)

;

J 69A3-344, 255 (1965). Waring, J. L., Schneider, S. J., Roth, R. S., J 65A4-116, 345 (1961). Waring, J. L., Schneider, S. J., Tressler, R. E., J 69A3-

343, 245 (1965). Warner, B., Corliss, C. H., 5900. Warren, K. A., McClintock, R. M., 4340. Warren, K. A., Reed, R. P., (1963) Mono.63.

Wartick, T., Linevsky, M. J., Shtdl, E. R., Mann, D. E., 893A. Warwick, C. S., 3508; 4784; 4862; 4913; 5263; 5275;

5661; 5746; 5803; 6070; 6834; 9010. Warwick, C. S., Athay, R. G., 4121. Warwick, C. S., Hansen, R. T., 3218. Warwick, C. S., Haurwitz, M. W., 4448. Warwick, C. S., Haurwitz, M. W., Hoff, C. E., 4714. Warwick, C. S., Lincoln, J. V., 4273; 5635. Warwick, C. S., McDonald, N., Pohrte, T., 3399. Warwick, C. S., Warwick, J. W., 3212. Warwick, C. S., Wood, M., 3403A; 4449. Warwick, J. W., J 68D2-331, 179 (1964). Warwick, J. W., Boischot, A., Lee, R. H., 3609. Warwick, J. W., Gordon, M. A., J 69D12-586, 1537

(1965). Warwick, J. W., Lawrence, R. S., 4382. Warwick, J. W'., Lee, R. H„ J 68D7-377, 807 (1964). Warwick, J. W., Warwick, C. S., 3212. Washer, F. E., 5223; 5783. Washer, F. E., Darling, W. R., J 66C3-95, 185 (1962) ; J 67C4-142, 311 (1963); 5549. Washer, F. E., Tayman, W. P., J 64C3-39, 209 (1960) ; J 65C3-71, 195 (1961) ; 3604. Wasik, S. P., Hubbard, W. D., J 68A4-284, 359 (1964). Wasik, S. P., Parker, R. A., 3180.

Wasilik, J .H., Parker, R. A., 3501A.

Wasilik, J. H., Potter, R. F., Flippen, R. B., 3632. Wasilik, J. H., Wheat, M. L., 6720. Wasko, B., Aimer, H. E., Bowman, H. A., Jensen, M.

W., Macurdy, L. B., Peiser H. S., J 68C3-159, 141

(1964). Wasmundt, D. F., Jean, A. G., Murphy, A. C, Wait,

J. R., J 65D5-153, 475 (1961). Wasow, W. R., 370A. Wasow, W., Redhe/fer, R. M., 1430A.

W-7t.s-.s-jH/,-, H. IF., Est hi, A. J., 6158. Watanabc, K., Sasaki, T., (1962) Paper IV-S3, Mono.

43, Vol. I, p. 491. Waterhouse, R. V., 4240; 5613. Waterhouse, R. V., Berendt, R. D., Cook, R. K., 3307. Waterhouse, R. V., Cook, R. K., 6809 Waterman, A. T., Jr., Strohbehn, J. W., J 67D6-294,

609 (1963); J 68D2-330, 173 (1964). 468
Waters, D. M., Janes, H. B., Kirkpatrick, A. W., Smith,

D., (1965) TN307.

Waters, D. M., Smith, D., Thompson, M. C, Jr., 4851. Waters, D. M., Thompson, M. C, Jr., Freethey, F. E., 3201. Waters, W. R., Stair, R., Schneider, W. E., Jackson,

J. A'., 9019. Waterstrat, R. M., Dickson, G., 6694. Waterstrat, R. M., Hicho, G. E., J 68A3-279, 317

(1964). Watson, D. A'., Newkirk, G. A., Curtis, G. W., Manning,

R., Shelby, J., 3335A. Watson, T. W., Robinson, H. E., 4387. Watstein, D., Bryson, J. 0., 4006. Watstein, D., Bnjson, J. O., Skoda, L. F., 6758. Watstein, D., Mathey, R. G., 3371; 3511; 4137; 5654. Waff, A. D., J 64D5-77, 425 (1960). Watt, A. D., Croghan, R. D., J 68D1-307, 1 (1964). Watt, A. D., Florman, E. F., Plush, R. W., 3388. Watt, A. D., Maxwell, E. L., J 64D4-69, 357 (1960). Watt, A. D., Plush, R. W., 3627. Watt, A. D., Plush, R. W., Brown, W. W., Morgan, A. H.,J 65D6-164, 617 (1961). Watt, W. C., (1965) TN255; (1965) TN258; (1965) TN281; 6379. Watterson, C. C, 4654A.

Watts, J. M., J64D6, 650 (1960) J 64D6, 651 (1960); 2175A; 3187; 3235; 3381. Waffs, J. M., Bateman, R., Finney, J. W., Smith, E. K., Tveten, L. H., 3362. Watts, J. M., Davies, K., 3739. Watts, J. M., Davies, K., Zacharison, D. H., 4446. Watts, J. M., Jones, D. L., Gallet, R. M., Frazer, D. N., (1963) TN166 (PB181454).

Watts, J. M., Knecht, R. W., VanZandt, T. E., 5023;

5162. Watts, J. M., Koch, J. A., Gallet, R. M., J 67D5-290, 569

(1963). Waffs, J. M., Lerfald, G. M., Hargreaves, J. K., J 69D7-

527, 939 (1965). Waxier, R. M., Adams, L. H., J 65A4-112, 283 (1961)

;

J 69C2-190, 103 (1965). Waxier, R. M., Weir, C. E., J 67A2-203, 163 (1963) ; J 69A4-352, 325 (1965). Waxier, R. M., Weir, C. E., Schamp, H. W., Jr., J 68A5-

295,489 (1964). Waxman, M., Chen, W. T., J 69C1-182, 27 (1965). Waxman, M., Jackson, J. W., 5189. Wayne, R. C, Zamir, D., Cotts, R. M., 6248. Weaver, F. D., 4471; 5177. Weaver, P. R., 192A. Weber, F. N., Mclntyre, D., Williams, L. C, Hexner,

P. E., Kim, H. G., Bunting, R. F., Kupke, D. W.,

4534. Weber, L. A., Diller, D. E., Roder, H. M., Goodwin,

R. D., 5067. Weber, L. A., Goodwin, R. D., (1963) TN183.

Weber, L. A., Goodwin, R. D., Diller, D. E., Hall, W. J., Roder, H. M., Younglove, B. A., 6414. Weber L. A., Goodwin, R. D., Diller, D. E., Roder, H. M., J 67A2-204, 173 (1963); J 68A1-260, 121 (1964);

4347. Weber, L. A., Roder H. M., Diller, D. E., Goodwin,

R. D., 5779. Weber, L. A., Roder, H. M., Goodwin, R. D., (1965) Mono. 94; 5742. Webster, D. 0., 5003. Webster, H. L., Elich, M .A., (1963) M248, p. 171. Webster, J. B., Pipp, R. M., J 68D3-350, 333 (1964). Webster, T. F., Garland, G. D., J 64D4-73, 405 (1960). Week, E. A., Aimer, H. E., Macurdy, L. B., Reiser, H. S., J 66C1-85, 33 (1962). Weeks, J. J., J 67A5-233, 441 (1963). Weeks, J. J., Hoffman, J. D., J 66A1-137, 13 (1962) ; 4878; 9146. Weeks, J. J., Powers, J. D., Hoffman, F. A., Quinn, F. A.,

Jr., J 69A4-353, 335 (1965).

Wegstein, J. H., 3215A; 9147. Wegstcin, J. H., Cohen, K., 6611. Wcystcin, J. H., Youden, W. W., 3949; 4444. Weidner, V. R., Gates, D. M., Keegan, H. J., Schleter, J C 9028 Weidner' V. R., Keegan, H. J., Schleter, J. C, 6715. Weigel, K. V., Stanford, J. W., Paffenbarger, G. C, 4286. Weigel, K. V., Stanford, J. W., Paffenbarger, G. C,

Sweeney, W. T., 3481. Weil, H., Pyati, V. P., J 69D2-466, 291 (1965). Weinberg, L., J 64D6, 687 (1960). Weinberger, A., Leiner, A. L., Loberman, H., Coleman,

C. D., 4402. Weinberger, A., Leiner, A. L., Notz, W. A., Smith, J. L., 1159AA.

Weinberger, H. F., J 64B4-37, 217 (1960) ; J 65B2-47,

99 (1961). Weingart, J. M., Johnston, A. R., (1964) M256, p. 113. Weinschel, B. O., J 64D6, 599 (1960). Weinstock, J., 4803; 5236; 5541; 6102; 6495; 6774; 6866; 6883; 6890; 8996. Weir, C. E., J 69A1-324, 29 (1965) ; J 70A2-391, 153

(1966). Weir, C. E., Block, S., Perloff, A., 6437. Weir, C. E., Block, S., Piermarini, G., J 69C4-208, 275

(1965) ; 6779. Weir, C. E., Lippincott, E. R., J 65A3-100, 173 (1961). Weir, C. E., Lippincott, E. R., Van Valkenburg, A., 3582. Weir, C. E., Lippincott, E. R., Van Valkenburg, A., Bunting, E. N., 3799. Weir, C. E., Lippincott, E. R., Welsh, F. E., 4177. Weir, C. E., Piermarini, G. J., J 66A4-167, 325 (1962) ; J 68A1-258, 105 (1964) ; 4681; 5907. Weir, C. E., Schroeder, R. A., J 68A5-294, 465 (1964). Weir, C. E., Schroeder, R. A., Lippincott, E. R., J 66A5-

176,407 (1962) ; 4728. Weir, C. E., Spinner, S., 4621. Weir, C .E., Van Valkenburg, A., Lippincott, E., 4821. Weir, C. E., Waxier, R. M., J 67A2-203, 163 (1963);

J 69A4-352, 325 (1965). Weir, C. E., Waxier, R. M., Schamp, H. W., Jr., J 68A5-

295,489 (1964). Weir, C. E., Whatley, L. S., Lippincott, E. R., Van Val- kenburg, A., 6273. Weir, C. E., Yoder, H. S., Jr., 3567. Weise, E. L., Burke, R. W., Taylor, J. K., 6768. Weise, W. L., Shumaker, J. B., 4751. Weiss, A., Smith, W., 1011B.

Weiss, A. W., 5856. Weiss, A. W., Krauss, M., 6281. Weiss, A. W., Martin, J. B., 5220; 5360. Weiss, G. H., 3 66B4-81, 157 (1962); J 66B4-83, 165

(1962) ; J 67B4-104, 223 (1963); J 67B4-105, 229

(1963) ; J 68B1-108, 1 (1964); J 68B1-110, 13 (1964) ; J 68B1-113, 31 (1964); 4808; 5169; 5886. Weiss, G. H., Andersen, H. C, Shuler, K. E., Oppenheim, I., 6056; 6224. Weiss, G. H., Billick, I. H., J 70A1-383, 17 (1960). Weiss, G. H., Coleman, B. D., Gornick, F., 5698. Weiss, G. H., Dishon, M., J 70B1-171, 95 (1966). Weiss, G. H., Oser, H., Shuler, K. E., 6345. Weiss, G. H., Shuler, K. E., 5464. Weiss, G. H., Shuler, K. E., Andersen, K., 4950. Weiss, G. H., Siddiqui, M. M., J 67D6-304, 753 (1963). Weiss, L., J 68B2-118, 65 (1964). Weissberg, S. G., Rothman, S., Wales, M., 4782. Weissman, S., Krupenie, P. H„ 8949. Weitzel, D. H., Keeler, R. N., Blake, J. H., Konecnik, M.,

Weitzel, D. H., Ludtke, P. R., 5363. Weitzel, D. H., Ludtke, P. R., Robbins, R. F., 5983.

Weitzel, D. H., Robbins, R. F., Bopp, G. R., Bjorklund, W. R., 3614; 4054.

Weitzel, D. H., Robbins, R. F., Herring, R. N., 4980.

Weitzel, D. H., Robbins, R. F., Ohori, Y., 5447. 469
Welch, J. H., Gutt, W., (1962) Paper II-S1, Mono.43,

Vol. I, p. 59. Welch, W. J., J 69D12-599, 1580 (1965). Weldon, J. M., Shapley, A. H., Lincoln, J. V., 4229.

Wells, J. S., Daywitt, W. C, Miller, C. K. S., 4750;

6198. Wells, J. S., Estin, A. J., Trembath, C. L., Daywitt, W. C, 3414; 4463. Wells, P. I., Norton, K. A., Herbstreit, J. W., Janes, H. B., Hornberg, K. O., Peterson, C. F., Barghausen, A. F., Johnson, W. E., Thompson, M. C, Jr., Vetter, M. J., Kirkpatrick, A. W., (1961) Mono.33.

Welsh, F. E., Lippincott, E. R., Weir, C. E., 4177. Wentworth, F. L., Cohn, M., J 68D6-366, 681 (1964). Wergin, P. C, Smith, R. V., Ferguson, J. F., 5064. Wescott, L. R., Wright, J. W., Brown, D. J., TN40-3 to TN40-7 (PB151399-3 to PB151399-7) ; TN40-8 to TN40-12.

West, E. D., J 67A4-222, 331 (1963) ; 3807; 5381. West, E. D., Ginnings, D. C., 6111. West, E. D., Ishirhara, S., 6541. West, R., Maki, A. G., 5776. West, R. G., Jefferson, C. F., 5455; 6186. Westfall, W. D., J 69D9-557, 1235 (1965). Weston, V. H., J 69D9-561, 1257 (1965). Weston, V. H., Felsen, L. B., J 68D4-359, 490 (1964). Weston, V. H., Hemenger, R., J 66D5-222, 613 (1962). Westwater, E. R., J 69D9-553, 1201 (1965) ; 6549. Westwater, E. R., Bean, B. R., Abbott, R. L., 8950. Westwater, E. R., Dutton, E. J., Bean, B. R., 5935. Wetzel, L., Tang, T.-W., J 69D4-494, 599 (1965). Wexler, A., 4108; 5391; 6466. Wexler, A., Hyland, R. W., (1964) Mono.73; 9087. Wexler, A., Jones, F. E., 3372. Weygand, F., Simon, H., Kell, K. D., Isbell, S. H., Sniegoski, L. T., 4722. Weyl, W. A., Ormsby, W. C., 3446. Whale, H. A., J 66D3-194, 265 (1962) ; J 66D6-224, 641

(1962) ; J 67D3-263, 287 (1963). Wharton, K., Forziati, F. H., Rite, R. T., 3573. Wharton, M. K., Forziati, F. H., 4112. Whatley, L. S., Lippincott, E. R., VanValkenburg, A., Weir, C. E., 6273. Wheat, M. L., Wasilik, J. H., 6720. Wheat, M. L., Wachtman, J. B., Jr., Marzullo, S., J 67A2-205, 193 (1963). Wheeler, H. A., J 65D1-106, 89 (1961); J 65D2-119,

189 (1961) ; J 68D1-323, 105 (1964). Wheelon, A. D., J 64D4-62, 301 (1960) ; J 64D5-80, 449

(1960) ; J 66D3-192, 241 (1962) ; J 67D6-299, 699

(1963) . Whipple, E. B., Brown, T. H., Farrar, T. C., Coyle,

T. D., 8988A.

White, C. E., J 68D5-360, 542 (1964). White, D., Ames, L. L., Mann, D. E., 5407. White, D., Linevsky, M. J., Mann, D. E., 6133. White, D., Mann, D. E., Seshadri, K. S., Dever, D. F., Linevsky, M. J., 5763. White, D., Mann, D. E., Walsh, P. N., Sommer, A., 3579; 3580. White, D., Schoen, L. J., Mann, D. E., Knobler, C., 4902. White, D., Sommer, A., Linevsky, M. J., Mann, D. E., 5406. White, E. E., Jr., Brauer, G. M., Bnrnes, C. L., Woelfel,

J. B., 3174. White, G. W. T., Hayfield, P. C. S., (1964) M256, p. 157. White, J. A., 5277; 5912; 6615; 9035. White, L. A., Riley, J. C., (1963) M248, p. 195. White, M. L., 3276A; 3442; 3875. Whitson, A. L., Carpenter, G. B., J 69D4-500, 651

(1965). Wichers, E., 3145; 3331; 4241; 4249; 4789; 5005; 5792. Wickoff, B. A., 5752. Wider, B., Gallet, R. M., Richardson, J. M., Ward,

G. D., Harding, G. N., 3649.

Wiebelt, J. A., Dunn, S. T., Richmond, J. C., J 70C2-221,

75 (1966). Wieder, B., 6210. Wiegmann, N. A., 628A.

Wiese, W. L., 3633; 5467; 5588. Wiese, W. L., Berg, H. F., Eckerle, K. L., Burris, R. W.,

6344. Wiese, W. L., Berg, H. F., Griem, H. R., 3631; 4170. Wiese, W. L., Glennon, B. M., (1962) Mono.50; (1966) M278.

Wiese, W. L., Murphy, P. W., 5656. Wiese, W. L., Paquette, D. E., 5982. Wiese, W. L., Paquette, D., Solarski, J. E., 4083; 5597. Wiese, W. L., Shumaker, J. B., Jr., 4171. Wiese, W. L., Smith, M. W., Glennon, B. M., (1966) NSRDS-NBS4, Vol. I. Wiese, W. L., Solarski, J. E., 6063. Wiggins, T. A., Plyler, E. K., Tidwell, E. D., 4125;

5649. Wilber, R. W., Barghausen, A. F., Guiraud, F. O., McGavin, R. E., Murahata, S., (1963) TN103.

Wilcox, R. M., 6635. Wildhack, W. A., (1963) M248, p. 2; 165A; 4190; 5693; 5901 A; 6855. Wildhack, W. A., Astin, A. V., 1741A.

Wildhack, W. A., Huntoon, R. D., 8943; 9081. Wildhack, W. A., Perls, T. A., Kissinger, C. W., Hayes,

J. W., 6657. Wildhack, W. A., Powell, R. C., Mason, H. L., (1965) TN262.

Wilhelmsson, W. H. B., J 66D4-206, 439 (1962). Wilkerson, R. E., J 66D4-209, 479 (1962). Wilkerson, R. E., Furutsu, K., Hartmann, R. F., J 68D7-

380, 827 (1964). Wilkinson, D. T., Alley, C. 0., Bender, P. L., Dicke, R. H., Falter, J. E., Plotkin, H. H., 8927. Wilks, I. E., Mordfin, L., 1169A.

Willard, W. A., Jenkins, W. D., J 66C1-88, 59 (1962) ; J 70C1-215, 5 (1966) ; 5056; 5672. Willard, W. A., Jenkins, W. D., Youden, W. J. 4317. Williams, E. S., (1963) TN188; (1965) TN257.

Williams, E. S., Hermach, F. L., 3886. Williams, E. S., Hermach, F. L., Griffin, J. E., 6568;

6569. Williams, J. H., (1965) M269, p. 217. Williams, L. C., Mclntyre, D., Hexner, P. E., Kim,

H. G., Weber, F. N., Bunting, R. F., Kupke, D. W.,

4534. Williams, L. C., Mclntyre, D., Wims, A. M., Mandelkern, L., 4544. Williams, R. H., 3 69D2-465, 287 (1965). Williams, R. H., Kelly, R. D., Cowan, W. T., J 69D7-

535, 1003 (1965).

Willis, E. A., Srnith, R. 0., Hilten, J. S., J 66C4-111, 357 (1962).

Willke, T. A., J 68B2-116, 55 (1964) ; J 70B2-175, 149

(1966).

Willke, T. A., Thompson, W. A., 5529. Wilsdorf, H. G. F., (1963) Mono.59, p. 35. Wilsdorf, H. G. F., Ruff, A. W., Jr., 8904. Wilson, A. C, (1960) TN78 (PB161579).

Wilson, A. C, J 64D5-93, 557 (1960) ; J 65D6-167, 641

(1961). Wilson, A. C, Cottony, H. V., J 65D1-108, 101 (1961)

;

3734. Wilson, B. L., 4899. Wilson, B. L., Lloyd, E. C, (1963) M248, p. 15. Winter, D. F., J 66D3-189, 215 (1962) ; J 67D5-287, 551

(1963). Wilson, E. B., Jr., Kivelson, D., Lide, D. R., Jr., 3648. Wilson, I. H., Johnson, W. H., Schumm, R. B., Prosen, E. J., J 65A2-90, 97 (1961). Wilson, J. B., Ledley, R. S., 3966. Wilson, J. H., Arp, V. D., Kropschot, R. H., Love, W. F., Phelna, R., 4331. Wilson, J. H., Arp, V., Winrich, L., Sikora, P., 5074. Wilson, J. H., Cline, D., Kropschot, R. H., Arp, V., 5041. 470
Wilson, L. B., (1963) M248. p. 111. Wilson, L. D., Heisler, L. H., J 65D6-165, 629 (1961). Wilson, M. Zahibas, R., J 69A1-329, 59 (1965). Wilson, R. E., Stimson, H. F., Swindells, J. F., 5729. Wilson, W. A., Birmingham, B. W., Sixsmith, H., 4981. Wilson, W. A., Brcnnan, J. A., Radcbaugh, R., 4977. Wilson, W. A., Brcnnan, J. A., Radcbaugh, R., Birming- ham, B. W., 4342. Wilson, W. A., Mann, D. B„ Sixsmith, Birmingham,

B. W„ 5161. Wilson, W. A., Martin, K. B., Brcnnan, J. A., Birming- ham, B. W., 3536. Wilson, W. A., Schmidt, A. F., Purcell, J. R., Smith,

R. V., J 65C2-58, 81 (1961) ; 3970. Wilson, W. A., Sixsmith, H., J 68C2-156, 101 (1964). Wilson, IT'. A.. Sixsmith, H., Birmingham, B. W.,

(1961) TN115 (PB161616).

Wilson, W. A'., 3717A; 4519. Wilson, W. K„ Mandcl, J., 3497; 4032. Wims, A., Mclntyre, D., Green, M. S., 4556. Wims, A. M., Mclntyre, D., Williams, L. C, Mandel- kem, L., 4544. Wincklcr, J. R., J 66D2-180, 127 (1962). Winckler, J. R., Arnohhj, R. L., J 68D5-363, 619 (1964). Winder, D. R„ Sickafns, E. N., 6107. Winkclman, J. R., Jean, A. G., Hornback, C. E., Doherty, R. H., Moore, R. T., 9057. Winkclman, J. R., Slutz, R. J., 6364. Winkler, G. M. R., Reder, F. H., Abom, C. J., J 68D3-

342, 275 (1964). Winrich, L., Arp, V., Wilson, J. H., Sikora, P., 5074. Winterbottom, A. B., (1964) M256, p. 97. Winzer, G. E., Berendt, R. D., (1964) Mono.77.

Winzer, G. E., Corliss, E. L. R., 9049.

Witt, R. P., Elbourn, R. D„ 691A.

Witzgall, C, J 69B3-150, 175 (1965) ; 5188. Witzgall, C, Edmonds, J., Goldman, A. J., Zahn, C. T., Jr., 6246. Witzgall, C, Zahn, C. T., Jr., J 69B1&2-139, 91 (1965).

Woelfel, J. B., Brauer, G. M., White, E. E., Jr., Burnes,

C. L., 3174. Woelfel, J. B., Paffenbarger, G. C, 3184; 3253; 4306;

5228; 8958; 8997. Woelfel, J. B., Paffenbarger, G. C, Sweeney, W. T., 3504; 3993; 4586; 4587; 5676; 5703: 6637; 8995. Woermann, E., (1962) Paper II-S8, Mono.43, Vol. I, p. 119. Wolf, H. K., Zapf, T. L., Chinburg, C. H., 5405. Wolfe, W. C, 4931; 5295. Wolfe, W. C, Krewson, C. F., Wood, J. W., Mitchel,

J. W., Marth, P. C, 3325. Wolford, R. K., 5437; 6170. Wolford, R. K„ Bates, R. G., 4724. Wollin, H. F., 6508. Wollin, H. F., Hasko, S., 6313. Wolock, I., Newman, S. G., J 67A6-249, 625 (1963) • 4765; 5484; 6086; 6764. Wolock, I., Newman, S. B., Kies, J. A., 3214. Womack, C. M., Jr., Silverman, J. N., 5207. Wood, G. B., 5166. Wood, G. W., Cook, R. K., 8992. Wood, J. W., Krewson, C. F., Wolfe, W. C, Mitchel,

J. W., Marth, P. C, 3325. Wood, L. A., 4397A; 6522. Wood, L. A., Linnig, F. J., Parks, E. J., 6052. Wood, L. A., Martin, G. M., J 68A3-271, 259 (1964). Wood, L. A., Roth, F. L., 4554. Wood, L. A., Roth, F. L., Bullman, G. W., J 69A4-354, 347 (1965). Wood, M., 4290. Wood, M., deMastus, H., 3764. Wood, M., Warwick, C. S., 3403A; 4449. Wood, P., Leussing, D. L., Harris, J., 4991. Woodhead, C. M., Paabo, M., Robinson, R. A., Bates, R. G., J 69A3-345, 263 (1965) ; 6617. Woodside, K. H., Ormsby, W. C, 3804.

Woodside, K. H., Ormsby, W. C, Shartsis, J. M., 4641. Woodward, M. W., Harding, W. B., Carroll, J. C,

(1966) TN331.

Woolf, A. R., Hunt, C. M., 6366. Woollcy,H. W., 776A; 3512; 3529; 4439. Woollcy, H. W., Hilscnrath, J., Beckett, C. W., Benedict, W. S., Fano, L., Hoge, H. J., Masi, J. R., Nuttall, R. L., Tonloukian, Y. S., 3806. Worksman, P., Evans, D. N., Blaine, R. L., (1962) Paper VI-S3, Mono.43, Vol. II, p. 871. Worthington, C. R., Posner, A. D., Mandelkern, L., Diorio, A. F., 3606. Woyk, E. (Chvojkova), J 69D3-483, 453 (1965). Wright, J. H., 3172. Wright, J. R., 9137. Wright, J. R., Campbell, P. G., J 68C2-157, 115 (1964) ; J 68C4-176, 297 (1964); 4575; 6277; 6280; 6288;

8931. Wright, J. R., Campbell, P. G., Bowman, P. B., 4995. Wright, J. R., Campbell, P. G., Fridinger, T. L., 6440;

6474. Wright, J. R., Gray, V. E., 5129; 5239; 6199; 9100. Wright, J. /?., Green feld, S. H., 4664. Wright, J. R., Martin, K. G., Campbell, P. G., 6645. Wright, J. R., Minesinger, R. R., 5749; 5845. Wright, J. W., J 66D3-198, 297 (1962) ; J 68D2-332, 189 (1964); J 68D5-362, 589 (1964); (1962) TN135

(PB161636); (1964) TN138 (PB161639) ; (1964) TN40-13 (PB151399-13) ; (1964) TN146 (PB161-

647); 3267A; 3409; 3476; 3651; 3774; 3819; 3845;

4568; 5725; 5756; 5769; 5999; 6026; 6160; 6255. Wright, J. W., Gautier, T. N., J 64D4-67, 347 (1960). Wright, J. W., Golomb, D., Rosenberg, N. W., Barnes,

R. A., 6078; 6079. Wright, J. W., McDuffie, R. E., 3860. Wright, J. W., Olesen, J. K., 4374. Wright, J. W., Paul, A. K., 5678; 6380. Wright, J. W'., Peterson, V. L., Stonehocker, G. H., 6627. Wright, J. W., Rosenberg, N. W., Edwards, H. D., 6164. Wright, J. W., Wescott, L. R., Brown, D. J., TN40-3 to TN40-7 (PB151399-3 to PB151399-7) ; TN40-8 to TN40-12. Wu, T. T., J 67D1-246, 83 (1963)

.

Wu, T. T., Gooch, D. W., Harrison, C. W., Jr., King,

R. W. P., J 67D3-269, 355 (1963). Wu, T. T., King, R. W. P., J 69D3-481, 429 (1965). Wyckoff, H. 0., 3478; 5607. Wyrkoff, H. O., Allisy, A., Aston, G. H., Barnerd, G. P., Hubner, W., Loftus, T., Taupin, G., 5416. Wyckoff, H. 0., Frantz, F. S., Jr., 3147. Wyckoff, H. O., Lamperti, P. J., J 69C1-184, 39 (1965). Wyckoff, J. M., 3566A.

Wi/ckoff, J. M., Koch, H. W„ Ziegler, B., Uhlig, R., 9li7. Wyckoff, J. M., Leiss, J. E., Broberg, J., Schrack, R. A., 6245. Wyckoff, J. M., Koch, H. W., 3916. Wyckoff, J. M., Ziegler, B., Koch, H. W., 6516. Wyllcr, A. A., Sen, H. K., J 69D1-446, 95 (1965). Wyly, R. S., (1964) Mono.86; 113A; 407A; 1281A;

3311; 3398; 4106; 4191. Wyly, R. S., Eaton, H. N., (1961) Mono.31; 463A. Wyman, G. M., Brode, W. R., Gould, J. H., 857A. Wyman, L. L., 4325A. Wyman, L. L., Cuthill, J. R., Moore, G. A., Park, J. J., Yakowitz, H., J 66A4-171, 351 (1962). Wyman, L. L., Cuthill, Jr., Yakowitz, H., 5473. Wyman, L. L., Michaelis, R. E., (1964) M260-1. Wyman, L. L., Michaelis, R. E., Flitsch, R., (1964) M260-2. Wyman, L. L., Moore, G. A., J 67A2-200, 127 (1963) ; 4119; 5606. Wyman, L. L., Penrod, P. E., 4091. Wyman, L. L., Sterling, J. T., Palumbo, F. J., J 66A6-

183, 483 (1962). Wyszecki, G., Judd, D. B., MacAdam, D. L., 6383. 471
Y

Yabroff, I., J 65D5-155, 485 (1961)

.

Yahia, J., 5278. Yahia, J., Frederikse, H. P. R., 4055. Yakowitz, H., Cuthill, J. R., (1962) Mono.52. Yakowitz, H., Cuthill, J. R., Wyman, L. L., 5473. Yakowitz, H., Michaelis, R. E., Moore, G. A., J 68A4-

282,343 (1964); (1964) M260-3.

Yakowitz, H., Vieth, D. L., J 69C3-201, 213 (1965). Yakowitz, H., Vieth, D. L., Heinrich, K. F. J., Michaelis, R. E., (1965) M260-10.

Yakowitz, H., Wyman, L. L., Cuthill, J. R., Moore,

G. A., Park, J. J., J 66A4-171, 351 (1962). Yamaguchi, G., Takemote, K., Uchikawa, H., Takagi,

S., (1962) Paper IV-S4, Mono.43, Vol. I, p. 495. Yamamoto, N., Hiatt, C. W., Haller, W., 6203. Yashuhara, M., Maeda, H., Matsushita, S., Shirgaokar,

M., 6252. Yates, D. J. C, Plyler, E. K., Gebbie, H. A., 5037. Yates, J. T., Jr., Madey, T. E., 6821. Yates, J. T., Jr., Madey, T. E., Stern, R. C, 6820. Yee, K. W., Carpenter, R. J., 5633. Yeh, K. C, J 66D5-223, 621 (1962). Yeh, K. C, Swenson, G. W., Jr., J 68D8-386, 881 (1964). Yeh, T., Cohen, M. H., J 69D4-490, 539 (1965). Yoder, H. S., Jr., Robbins, C. R., 5688. Yoder, H. S„ Jr., Weir, C. E., 3567. Yodh, G. B., Meshkov, S., Snow, G. A., 5960; 6519. Yokley, C. R., 6563. Yokley, C. R., Shumaker, J. B., Jr., 4316; 5132; 6488. Yolken, H. T., Kruger, J., 6352; 8923. Yoshida, T., Florin, R. E., Wall, L. A., 9045. Youden, W. J., (1963) M248, p. 147; 903A; 2278A;

3129; 3189; 3205; 3223; 3224; 3286; 3313; 3657;

3864; 4065; 4082; 4107; 4130; 4216; 4315; 4335; 4336; 4410; 4470; 4649; 4684; 4761; 4837; 4884;

4968; 5102; 5404; 5462; 5554; 5565; 5628; 5696;

5697; 5739; 5753; 6357; 6403; 9040; 9078. Youden, W. J., Connor, W. S., Severo, N. C, 3250. Youden, W. J., Garfinkel, S. B., Mann, W. B., J 70C2-

219, 53 (1966). Youden, W. J., Jenkins, W. D., Willard, W. A., 4317. Youden, W. J., Mertz, D. B., Park, T., 6874. Youden, W. W., (1965) M266; 5229; 5403. Youden, W. W., Leiner, A. L., 3953. Youden, W. W., Wegstein, J. H., 3949; 4444. Young, J. A., Taylor, J. K., 3466; 3997. Young, J. M., Campbell, W. H., 5209. Young, J. M., Chrzanowski, P., Greene, G., Lemmon,

K. T., 4394; 4701. Young, J. M., Cook, R. K., 4942. Young, J. M., Goerke, V. H., Cook, R. K., 6803. Young, J. P., 4592; 9135. Young, J. P., Lamb, V. A., 3287; 4232. Young, J. P., Salmon, H. I., 3999. Young, R. D., J 69B3-154, 213 (1965) ; 6755. Young, R. D., Gurney, P., Jr., Hutchinson, F., 6651. Young, R. D., Schubert, D. C, 6650. Young, R. W., Newman, S. B., Capott, R. J., 9043. Young, S., Connor, W. S., (1961) AMS58.

Young, T. D., Fath, J. M., (1964) M256, p. 349. Young, T. R., (1963) M248, p. 9; 5482; 6712. Young, T. R., Meyerson, M. R., Ney, W. R., J 64C3-38, 175 (1960) ; 4348. Young, T. R., Rothrock, B. D., J 67A2-199, 115 (1963). Younglove, B. A., 9033. Younglove, B. A., Diller, D. E., 5046; 5047. Younglove, B. A., Goodwin, R. D., Diller, D. E., Hall, W. J., Roder, H. M., Webber, L. A., 6414. Yu, H., 6257. Yu, H., Wall, L. A., 8978.

Yura, 0., Garfinkel, S. B., Mann, W. B., Medlock, R. W.,

9061. Yura, 0., Mann, W. B., Medlock, R. W., 5884. Yurow, J. A., Nimeroff, I., 6681. z Zacharisen, D. H., (1960) TN2-2 (PB151361-2).

Zacharisen, D. H., Agy, V., 3914. Zacharisen, D. H., Crow, E. L., 3829. Zacharisen, D. H., Davies, K., Watts, J. M., 4446. Zadeh, L. A., J 64D6, 681 (1960). Zahn, C. T., Jr., J 66B4-86, 181 (1962); 3501; 5146;

5501; 5926. Zahn, C. T., Jr., Edmonds, J., Goldman, A. J., Witzgall, C, 6246. Zahn, C. T., Jr., Witzgall, C, J 69B1&2-139, 91 (1965). Zalubas, R., Wilson, M., J 69A1-329, 59 (1965). Zamir, D., Wayne, R. C, Cotts, R. M., 6248. Zanboorie, M. H., 6559A.

Zapas, L. J., Bernstein, B., Kearsley, E. A., J 68B3-123,

103 (1964) ; 6722. Zapas, L. J., Craft, T., J 69A6-377, 541 (1965). Zapas, L. J., Kearsley, E. A., Bernstein, B., 5167. Zapf, T. L., J 65C3-69, 183 (1961); J 66C1-84, 25 (1962); 4986; 5737; 6427; 8952. Zapf, T. L., Chinburg, C. H., Wolf, H. K., 5405. Zapf, T. L., Lisle, R. V., 5248; 5959. Zapf, T. L., Sze, W. C, Dunn, A. F., 6595. Zare, R. H., Dunn, G. H., VanZyl, B., 6706.

Zeitler, E., Ehrlich, M., McLaughlin, W. L., 6333.

Zeitler, E., Olsen, H., 6363. Zelen, M., 2700A; 3209; 3428. Zelen, M., Dannemiller, M. C, 3437; 4283.

Zelen, M., Goldman, A. J., J 68B4-128, 151 (1964).

Zelen, M., Kurkjian, B., 4415; 4650. Zelen, M., Severo, N. C, (1964) AMS55, p. 925; 3560;

3671. Zerby, C. D., Fano, U., Berger, M., 4668.

Ziegler, B., Wyckoff, J. M., Koch, H. W., 6516.

Ziegler, B., Wyckoff, J. M., Koch, H. W., Uhlig, R., 9117.

Ziegler, G. G., Hilsenrath, J., (1962) Mono.49.

Ziegler, G. G., Hilsenrath, J., Messina, C. G., Walsh,

P. J., Herbold, R. J., (1966) H101. Zimmer, G. W., Schwebel, A., Costrell, L., 5581. Zimmerer, R. W., 3720; 4790; 5348; 5489; 5686; 5903A. Zimmerer, R. W., Anderson, M. V., Beers, Y., Strine, G. L., 5490. Zimmerer, R. W., Anderson, M. V., Strine, G. L., Beers,

Y., 4775. Zimmerer, R. W., Mizushima, M., 4238.

Zirker, J. B., Thomas, R. N., 4027 ; 4028. Zitron, N. R., J 64D5-94, 563 (1960). Zmuda, A. J., Shaw, B. W., Haave, C. R., J 68D1-325,

117 (1964). Zucker, F. J., J 64D6, 746 (1960); J 68D4-359, 460

(1964); J 68D9-398, 989 (1964); (1964) AMS55,

p. 65. Zuckschwerdt, W., Pfleger, J., Schmidt-Rohr, U., Speigel, V., Turek, P., 5364. Zuludek, F. R., Smith, R. V., Isbin, H. S., Fauske, H. K., Petrick, M., Robbins, C. H., 5981. Zupancic, C, Pruitt, J. S., Allisy, A., Joyet, G., Pohlit, W., Tubiana, M., J 66C2-91, 107 (1962). Zwanzig,R., 5292; 5293; 5294; 5361; 5477; 5832; 6036; 6126; 6254; 6264; 6766; 9116. Zwanzig, R., Larsen, S. Y., Mountain, R. D., 8922. Zwanzig, R., Mountain, R. D., 6777. Zwanzig, R. W., J 68B4-126, 143 (1964); 3167; 3472;

3531; 3584; 4174; 4195; 4314; 4396. Zwanzig, R. W., Rice, S. A., Kirkwood, J. G., Ross, J., 3315. Zwanzig, R. W., Rubin, R. J., 3931. Zwanzig, R. W., Shuler, K. E., 3731A.

472
6.3. SUBJECT INDEX

A AAT=aA, incidence equation, 3837. Abandoned, conventional definition of mismatch loss, 6365. Abbreviated calendar record, 5899. Abe's for finding real, imaginary, and absolute values

of vector ratios, TN250.

Abel inversion, computer, 5132. Aberration, longitudinal spherical, in extra-axial re- gion of lenses, measurement, J 66C3-95, 185

(1962). ABOa-type rare earth borate solid solutions, poly- morphism, 6300. ABOi compounds, chemically similar, synthesis and

stability of bismutotantalite, stibiotantalite, 5722. Abrasion hardness of bone char, development of a new test, 3179. measuring, resistance of coatings, 3574. Abrasive grain for grinding wheels, grading, CS271-

65.

jet, NBS, method for measuring abrasion resist- ance of coatings, 3574. Abridged, color-project systems, demonstration of color perception, 3380.

color reproduction, 4460. Abscissas and weights of Gauss type, 4297. Absence, isotope effect in the fractional recrystallization of alpha-D-glucose-l-t, 3956. pronounced quadrupole effects in the nuclear re- sonance of InU5 in a noncubic environment,

5898. Absolute calibration, NBS photoneutron source, 5174.

calibration, National Bureau of Standards thermal

neutron flux, J 67A3-206, 215 (1963). configuration and chemical topology, J 67A6-245,

591 (1963). determination, acceleration of gravity, results, 8998. determination, refractive indices of gases at 47.7 gigahertz, 6576A.

Absolute, intensity of incoherent scatter echoes from

the ionosphere, J 66D4-203, 395 (1962).

isotopic abundance of terrestrial silver, J 66A1-

135, 1 (1962).

isotopic abundance ratio and the atomic weight of a reference sample of copper, J 68A6-305,

589 (1964).

isotopic abundance ratio and the atomic weight

of bromine, J 68A6-306, 593 (1964).

isotopic abundance ratio and the atomic weight of

chlorine, 4461.

isotopic abundance ratio and the atomic weight

of silver, 3412.

isotopic abundance ratios and the atomic weight

of a reference sample of chromium, J 70A2-

395, 193 (1966).

light scattering photometer: II. Direct determination of scattered light from solutions, J 68A1-

256, 87 (1964). magnetic susceptibilities by the Gouy and the Thorpe-Senftle methods, 4462.

magnetic susceptibilities by Thorpe-Senftle method, 3957. mass spectrometric determination, atomic weight

of silver, 3413. measurement, magnetic susceptibilities in weak

low-frequency fields, new null method, 5501. measurement, temperature of microwave noise

sources, 3414. measurement, temperatures of microwave noise

sources, 4463. measurement, tungsten for polonium210 alpha particles in air, nitrogen, and carbon dioxide, 3958. measurement, tungsten for polonium-210 alpha

particles in nitrogen, argon, and an argon- methane mixture, 6577. measurements (electrical), J 66C2-94, 137 (1962). microwave refractometer, 4464.

oscillator strengths for Fe I, 5900. photometry, aurora. I. The ionized molecular

nitrogen emission and the oxygen green line

in the dark atmosphere, 3126. photometry, aurora. II. Molecular nitrogen emission in the sunlit atmosphere, 3127. photometry, light of the night sky, TN214.

photometry, zodiacal light, 9058. radiometry, far ultraviolet, use of thermopiles,

8921.

real, and imaginary value, vector ratios, nomographs for computing, 6889.

scale, oscillator strengths, 5173; 5175. simplest form in digital circuit design, 3810A. temperature scale, 4 °K to 20 °K, determined from measurements with an acoustical ther- mometer, J 69A4-358, 375 (1965). temperatures determined from measurements of the velocity of sound in helium gas, 4465. value of G at the National Bureau of Standards, J 70C2-225, 149 (1966).

zenith intensity, [OI] 5577 at College, Alaska,

3811. zenith intensities, [OI] 5577, comparative study,

3374. Absorbed dose, measurement, construction of calori- meters, TN163.

Absorbent material, dependence of absorption coefficients upon area, 5531. Absorber, strong, cylindrical sample, absorption of radiation, 3128. Absorbing film, determination of optical constants, M256, p. 25. interface density distribution of polymer seg- ments in vicinity, 6678. Markov chains to the statistical thermodynamics

of polymer chains in a lattice, application of theory, 5925. Absorption, auroral, radio waves, contribution of non- thermal electrons, 6434. bands, carbon dioxide from 5.3 to 4.6 microns, J 67A3-207, 219 (1963). bands, carbon dioxide from 2.8 to 4.2/jl, 4467. bound-free, coefficient, hydrogen negative ion, 4984. by areas of finite size, 4302. 473
by flash heating and kinetic spectroscopy, observation of FeO, 6238. carbon dioxide, by solutions of 2-amino-2-(hydroxymethyl)-l,3-propandediol, 3959.

coefficients, dependent upon the area of the ab- sorbent material, 5531.

coefficients, homogeneous materials in the infrared

at elevated temperatures, preliminary studies directed toward determination of spectral, 8954.

coefficients, vacuum-ultraviolet, of water and methane, deuterium isotope effect, 6691. compressed gases, collision-induced, 4525; 4526;

5952. corrections by Albrecht's method, 3118. dispersion of centimeter waves by gases, index of refraction of air, J 67D6-297, 631 (1963). during polar cap absorption events, day-:to-night

ratio of cosmic noise, 5743. emission by cavities, Kirchhoff's Law and its generalized application, J 69B3-148, 165 (1965).

events, auroral, at South Pole, study, 5889; 6565.

events, cosmic noise, at geomagnetically conjugate

stations, 6663. events, ionospheric fluctations, at conjugate stations, 6075.

events, short-duration cosmic noise, in conjugate

regions at high magnetic latitude, some ob- servations, 6375.

filter, wavelength passed by Hg1(,s Zeeman-split,

5858. interpretation of maximum in soft X-j-ay, 6154. ionospheric, and possible oscillation of the iono- sphere in the conjugate regions, 6162. ionospheric radio, and electron precipitation in the auroral zones, 6733A.

light, by interstellar grains, possible mechanism,

6556.

line, 2537-A, atomic beam wavelength of Hg1M Zeeman filter, relative, 5857. microwave, in compressed oxygen, 3644. microwave, in the trimethylamine-trimethylboron

addition complex, 3255. nondeviative, high-frequency radio waves in auroral latitudes, 2374A.

nonresonant, and collision diameters in foreign- gas broadening of symmetric top molecules,

6227. Absorption, nonresonant microwave, and electric dipole moment of NO in the gaseous state, 3266. nonresonant microwave, dipole moment of PCI.F

vapor, 6695. occurrence of short-duration cosmic events inside the southern auroral zone, 5778.

optical properties of beryllium in the ultraviolet from electron energy, 8925. polar-cap, 6293. pure, model for the line-blanketing effect, differ- ence between a non-LTE, comment, 6641. radiation by a cylindrical sample of a strong absorber, 3128. radio wave, of several gases in the 100 to 117 kMc/s frequency range, J 65D1-98, 15 (1961).

scattering, photons by deformed nuclei, 4466.

scattering, photons by holmium and erbium, 3415. sound, coefficients, precision of reverberation chamber measurements, 4240.

spectroscopic, NO in crystalline and liquid krypton, 5682. spectroscopy, some atomic reactions, 3769. transition from resonant to nonresonant line shape

in microwave, 9119. very low frequency emissions, relation between

auroral radio, 8919.

Absorption spectra, ammonia in solid argon at 4.2 °K,

4397. charge-transfer, NO in Kr and Ch: ,OH solutions, 5948. chemical constitution of dyes, relation, 3346. diatomic molecules in liquid and crystalline rare

gases, 5901. far ultraviolet, of the rare gases, line profiles, 6831. infrared, B= 03 , B2 03 and B02 in solid argon matrices, 5406. infrared, carbon suboxide and malononitrile in solid argon matrices, 5407. infrared, mutarotational equilibria of monosaccharides, J 66A1-139, 31 (1962). magnesium and manganese atoms in solid rare gas matrices, 3811A; 4343.

solid methane, ammonia, and ice in the vacuum

_ ultraviolet, 3416.

solid xenon, krypton, and argon in the vacuum

ultraviolet, 3416A. vacuum ultraviolet, oxygen in liquid and crystalline argon and nitrogen, 6523. Absorption spectrum, carbon vapor in solid argon at 4 °K and 20 °K, 4469. CF2 trapped in an argon matrix, 4468. CF2N2, vibrational fundamentals from the ultraviolet, 9131. CF2 and its vibrational analysis, 3678. infrared, nitrous oxide (N2O) from 1830 cm-1 to 2270 cm"1

, J 68A1-255, 79 (1964). magnetic properties of osmium hexafluoride, 3960. muscovite, alteration by KBr pellet preparation,

5185. muscovite sheet mica, on basis of color, and optic angle, J 67A4-220, 309 (1963). "pink" afterglow of nitrogen in the vacuum ul- traviolet, 6248.

solid oxygen, 3329. YbCV6H2 0, 3975. Abstract numerical integrations, J 70B2-173, 137

(1966). shape recognition by machine, 3961.

unit, 6677. Abstracting, M276. Abundance, sodium, on the twilight sodium emission

2; theoretical model, 6263. A.C. resonant probes, resonant scattering, relationship, 9093. A-C to D-C comparators, calibration, 6623. AC-DC transfer instruments, practical aspects of use, TN257.

voltage comparator for use in a standards laboratory, TN280.

Acceleration, gravity, results of absolute determination.

8998. Accelerations, sinusoidal, at peak levels near that of gravity by "chatter" methods, 1310A.

Accelerators, electron, for food processing, 6727A.

linear, beam loading, 6612. Accelerometer, TN269.

"Thumbtack," 1.5-150 Kc range, 6507. Accelerometers, linear strain gage, used in telemetry, general characteristics, TN150.

Accounting, proper conformations of a polymer near

a surface, 6557; 8963. Accumulation, calibration errors and their optimum

distribution, 5176. Accuracy, analytical procedures, 4470; 4684.

electrical and radio measurements and calibrations, 1965, TN262-A.

Institute for Basic Standards role in plans for

better measurement, 9081. measurement, 4925. 474
measurements and calibrations, 1965, TN262.

Monte Carlo methods in computing finite Markov

chains, J 64B4-36, 211 (1960). planning for better measurement, 8943.

precision, electromagnetic measurements, 4850.

precision: evaluation and interpretation of analytical data, 3129. precision — experiment design aspects, 4239.

precision, instrument calibration systems, realistic evaluation, M248, p. 63. precision, measuring temperatures above 1000° K,

3812.

precision, realistic measurement, 4810.

precision, standards and measurements, 5901A.

solution X-ray spectrometric analysis of copper- base alloys, M260-5.

with which two loads can be matched on a magic

tee, 16A. Accurate analytic Hartree-Foch wave functions, atomic

scattering factors for lithium and beryllium

isoelectronic sequences, 5207. attenuation measurements at microwave frequencies, effects, 6011. determination of molecular weights of macromolecules, 2802A.

dielectric measurements, solid-disk specimens, precise determination of the area of guarded

electrodes, 6304.

direct and alternating voltage measurements, sys- tem, 6568; 6569. length measurement, meter bar, with helium-neon

laser, 5902. measurement, voltage ratios of inductive voltage

dividers, 6427. microwave wavemeters with convenient calibration

tables, 3417. Acenaphthylene, ionic polymerization, stereoregularity J 68A2-265, 165 (1964). Acetal in dimethyl sulfoxide-water solvents at 15, 25, and 35°, kinetics of acidcatalyzed hydrolysis,

6170. N-methylpropionamide-water and N-N-dimethylfor- mamide water solvents at 20; 25; 30; and 40°, 4724. water-acetone solvents at 15, 25, and 35°, kinetics of acid-catalyzed reaction, 5437. Acetamides, propionamides and formamides, electrolysis, 6444. Acetamido carbohydrates, infrared spectra, TN274.

derivative of sugars, J 69A3-349, 291 (1965). pyranoid derivatives and reducing, acetylated pyranoses, infrared absorption spectra, J 65A1-81,

31 (1961).

Acetate, aniline, orcinol, and bromination methods, in- terlaboratory comparison. Determination of pentosans, 3497.

ethyl, photolysis, from 4 to 500° K, intramolecular rearrangements, formation of ethylene, 5424. methyl, and acetone, gamma-ray radiolysis, 4350. monohydrate, zinc-doped copper, electron para- magnetic resonance spectra, 6733.

sec-butyl, 4711.

sec-butyl and sec-butyl formate, 4131. Acetic acid, deuterium oxide from 5 to 50°, 6704. dihydrogen phosphate ion from 10 to 40°, dissocia- tion constants, 8987. Acetic acid-d-3 in aqueous solution and related isotope

effects from 0 to 50 deg, dissociation, 6705. Acetic anhydride, water, and acetyl chloride in acetic

acid, conductance of solutions, 4013. Acetinide element alloys and compounds, 4738. Acetobacter suboxydans, isotope effect in oxidation, TN274.

Acetone, aliphatic aldehydes in the gas phase, triplet- state energy transfer, 6513.

Acetone, biacetul, quenching of the triplet state by

azoalkanes, 8967.

biacetyl, quenching of the triplet state by various unsaturated hydrocarbons, 8968.

solid, electron bombardment, 3200. Acetone-do in the presence of propane-2,2-d2, photolysis, 4225. Acetyl chloride, water, and acetic anhydride in acetic

acid, conductance of solutions of water, 4013. Acetylene, acetylene-d, mass spectrometric study of photoionization, 6193.

di, infrared spectrum, 4695. infrared spectrum, 4125. nitrogen and carbon monoxide, emission spectra condensed at very low temperatures from the

electrical discharge products, 4066. oxygen flame, ?)4050 group of cometary spectra, 1184A.

rotation-vibration constants, 5649. teriary butyl and tertiary butyl cyanide, micro- wave structure determinations, 4771. Achieve a given performance, multichannel radio communications systems, required signal-to-noise

ratios, carrier power and bandwidth, 5641. Achievement, measurement agreement among electrical standards laboratories, 4471; 5177. Achievements and prospects, auroral and airglow re- search, 1251A. Achromats and superchromats, four-color, 3548. Acid, acetic, in deuterium oxide from 5 to 50 deg, dis- sociation constant, 6704.

activity coefficients of hydrocholoric aqueous methanol (33.4 wt. %) with and without added sodium chloride at 25 deg, standard potential of the silver-silver chloride electrode, 5689. bases in analytical chemistry, 6578. coulometer, silver-perchloric, determination of the value of the Faraday, J 64A5-63, 381 (1960). deuteriophosphoric, in deuterium oxide from 5 to 50 deg., second dissociation constant, 6360. dihydrogen phosphate ion from 10 to 40°, dissocia- tion constants of acetic, 8987.

dissociation constant and related thermodynamic

quantities for triethanolammonium ion in water from 0° to 50 r C, J 64A4-56, 343 (1960) . eugenol-zinc oxide cements (o-ethoxybenzoic)

,

clinical behavior, 6636. eugenol-zinc oxide cements (o-ethoxybenzoic),

glycine and related thermodynamic quantities from 0 to 55 deg., 6359. formic, vapor-phase photolysis, 4405. hydriodic, from electromotive force measure- ments of hydrogen-silver iodide cells, thermo- dynamics of aqueous solutions, 6504. hydrochloric, in 50 wt. % methanol from 10 to 40 deg., standard electromotive force of hydrogen-silver chloride cell and the thermodynamics

of solutions, 6390. hydrochloric, normal, hydrogen sulfide precipitation of the elements from 0.2-0.5, 248A.

hydrozoic, blue material from, 3279. hydrozoic, quadrupole coupling constants from

microwave spectrum, 5605. metaboric, HB02 (cI), heat of formation of most

stable form, 3 5 63 A.

o-ethoxybenzoic eugenol and zinc, oxide hydro- genated rosin, physical properties of cements, based on, 6290. protonated, form of 2-amino-2-(hydroxymethyl)-l,

3-propanediol [tris(hydroxymethyl) aminomethane] and related thermodynamic quantities from 0 to 50°, 4042.

resistance, BSS4.

single crystals from solution, growth of oxalic: solvent effect on crystal habit, 6106. 475
system ethanol-water at 25° C, dissociation con- stant of anistic (p-methoxybenzoic) , J 64A4-

58, 351 (1960). Acid-base equilibria, benzene at three temperatures. The comparative reactivities of a phenolic

acid and a carboxylic acid with triethylamine and with 1,3-diphenylguanidine, 3418.

indicator, in a methanol-water solvent, salt effects and medium effects, 6356. Acid-catalyzed hydrolysis of acetal in dimethyl sul- foxide-water solvents at 15, 25, and 35°,

kinetics, 6170.

reaction, kinetics, acetal in water-acetone solvents

at 15, 25 and 35°, 5437.

Acid-da, acetic, in aqueous solution and related isotope

effects from 0 to 50 deg., dissociation, 6705. Acidic dissociation constant and related thermodynamic

quantities for diethanolammonium ion in water from 0 to 50 °C, J 66A1-142, 71 (1962). hydrolytic fragments, fluorescence of some, 5947. oxalate solutions, optical investigations of film formation and removal of gold anodes, 6272. strengths of isomeric dinitrophenols in benzene and water, 4536.

Acidity, basicity in organic solvents, 639A.

constants, thermodynamic, determination, 988A.

functions, values of the quantity 0 (aH7Ci) for

buffer solutions from 0 to 95°C, J 65A6-132,

495 (1961). methanol-water solvents, J 68A3-277, 305 (1964).

Acids, aldonic, 5182; 5183; 5184; 5185; 5440.

bases, and salts by EMF, conductance, optical and kinetic methods, TN271.

bases in alcohol-water solvents. 6579.

dissociation, in methanol-water solvents at 25 °C, J 68A3-277, 305 (1964). weak, methanol-water solvents, interpretation of potentiometric titrations, 6155. Acoustic plasma waves, field aligned E-region ir- regularities identified, 5356. properties of liquids, 5178. radiation pressure on a circular disk, 941A.

Acoustical interfermometer employed as an instrument

for measuring low absolute temperatures,

4472. thermometer, 6580. thermometer, absolute temperature scale from 4 °K to 20 °K determined from measurements,

J 69A4-358,375 (1965).

Acoustics, indication limit, 4691. references to contemporary papers, 4269. research survey committee, report, 8992.

section, 5179. Acrylic ester polymer, 4613. Acrylonitrile-butadiene-styrene (ABS) plastic drain, waste, and vent pipe and fittings, CS270-65.

plastic pipe (SDR-PR and class T), CS254-63.

Action, of water on calcium aluminoferrites, J 68A5-

293, 453 (1964).

zinc dust and sodium iodide in N, N-dimenthylfor- mamide on contiguous, secondary sulfonyloxy groups; a simple method for introducing non- thermal unsaturation, 6580A.

Activation analysis, TN276.

analysis, instrumentation, radiation techniques, and radioisotope techniques, July 1963 to June

1964, TN248.

energy, hydrogen atom addition to propylene, 4344. energy, viscosity liquids, relative roles of free volume, 8920. Active dark filaments, associated, and their relation to 2800-Mc/s radio bursts, solar flares, 6368. nitrogen flames exhibiting CN "tail" bands, spectral study, 6384.

regions, relation of solar, central meridian passage

to ionospheric disturbance, 5635.

Activities at the NBS, scientific information, 5653. cooperative dental research between the Federal Government and the American Dental Association at NBS, some, 6373. NBS, for the American rubber industry, 5497. SPACEWARN network, summary report, 5716. Activity coefficients, hydrochloric acid in, aqueous methanol (33.4 wt. %) with and without added sodium chloride at 25 deg., standard potential of the silver-silver chloride electrode, 5689.

coefficients, osmotic, tetraethylammonium iodide in aqueous solution at 25 deg., 5551.

coefficients, tris (hydroxymethyl) -faminothane in 50-percent methanol, J 69A3-345, 263 (1965). long-term magnetic, some evidence of influence on medium frequency sky wave propagation, 9017A.

low, radiochemical determination of uranium, 6331. osmotic coefficients of tris (hydroxymethyl) amino- methane and its hydrochloride in aqueous

solution at 25 °C, 8929. resurgence of solar and geomagnetic, in September and October, 5645.

solar, 5660. Adaptable fading model, binary error probability due

to, 5934. Adapter measuring impedance through without intro- ducing additional error, 6858. Adapters and connectors effects on accurate attenuation measurements at microwave frequencies, 6011. Added inert gases and pressure, effect on gas phase

radiolysis, propane, 6448. organic compounds, reactions of hot methyl radicals. Gas-phase photolysis of methyl iodide, 6099. sodium chloride, at 25 deg., standard potential of the silver-silver chloride electrode and activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt. %) with and without, 5689. Additional error, measuring impedance through an

adapter without introducing, 6858. features of radar returns from the equatorial elec- trojet, 9014. lunar influence on equatorial Es at Huancayo, 3130. Additives, effect on flame speed of methane, J 65A6-134,

513 (1961).

effect on ionic reaction mechanism in the radiolysis of methane, 5307; 6005. metal powder, in evacuated-powder insulation, 3637.

silver iodide particles exposed to light, 4614.

Additivity, failure, 5953.

rule for the vapor pressure lowering of aqueous

solutions, J 69A4-356, 365 (1965). Address before the Electrochemical Society Meeting,

Toronto, Canada, May 5, 1964, presidential, 6310. commencement, Albert Einstein, as I remember

him, 6015. encoding—study of the double-binary keyboard as a link in the machine-sorting of mail, 5903. Adherometer, electronic averaging device, 2109A.

Adhesion, diverse substrates, effect of surface-active comonomer, 6585. electrodeposited coatings, nodule method of measuring, 152B.

electrodeposited nickel to chromium at elevated temperatures, 3813. Adhesive bonded metals as a function of the rate of

loading, tensile shear strength, 4341. bonding of various materials to hard tooth tissues, 6581; 6582; 6583; 6584; 6585. Adhesives, ten structural, at temperatures down to —424° F, strength of, 3873. Adiabatic apparatus for the study of self-heating of poorly conducting materials, 946A. 476
Boltzmann-Ehrenfest, principle, simple derivation, 1486A.

calorimeter for the range 10 to 3G0 °K, J 69C1-181,

19, (1965).

calorimeters, heat capacity, alpha-alumina, heating

rate as a test, 5381. calorimeters, heat exchange, J 67A4-222, 331

(1963).

conditions with respect to the Lewis relation, cal- culation of the temperature of flat-plate wet

surface, 6619. demagnetization apparatus, simple, 4288. demagnetization of chromium methalamine alum, 641A.

self-heating, explosives and propellants, 5077. ADI auxiliary publications program, 5903A. Adipate polyesters at air-liquid interfaces, monolayers,

J 66A5-178, 439 (1962). Adjustable, coaxial, sliding termination, 5866. instrumentation bench for physical laboraties, 4477.

sliding termination and a sliding short-circuit, method of measuring the directivity of a directional coupler, 6201. Adjusting dental interferometer, simple device, 6560. force constants and its application to KUO, H2 CO, CH2 C1, and their deuterated molecules, method,

6864. Administration, weights and measures, H82.

Administrative and supervisory concepts of the meas- urement standards program at Battelle Memorial Institute, M248, p. 135. Admittance of annular slot antennas radiating into a plasma layer, J 68D3-348, 317 (1964). impedance standards, four-terminal-pair networks

as precision, 6083. radiation of an insulated slotted-sphere antenna

surrounded by a strongly ionized plasma

sheath, J 64D5-91, 525 (1960). Adsorbed glass finishes by ellipsometry, studies of

thicknesses, 6408. polystyrene, at 9-temperature, conformation, 6654. Adsorbents, carbon, below 400 deg Centigrade, inter- action of carbon dioxide, 6145. comparison of the low temperature adsorption of nitrogen and methane from hydrogen gas on

three different, 5130. Adsorption at a surface, random-walk model of chain- polymer, 8980. batch (and column), J 66A6-186, 503 (1962);

J 67A6-248, 615 (1963). desorption of polystyrene on chrome surface, rates, J 68A4-287, 391 (1964). from solution, J 66A6-186, 503 (1962) ; J 67A6-

248, 615 (1963). hydrocarbons on filters, TN274.

hydrogen, cryogenic impurity, 3488.

kinetics, J 66A6-186, 503 (1962); J 67A6-248, 615

(1963). methane and nitrogen from hydrogen gas on three

different adsorbents, comparison of the low

temperature, 5130. methane and nitrogen on silica gel, synthetic zeolite and charcoal, 5732. methane, on silica gel at low temperatures, 4345. nitrogen, argon on mineralogical graphite and dia- mond at 77 and 90°K, 3962.

nitrogen, methane from hydrogen gas on three dif- ferent adsorbents, comparison of the low temperature, 5130.

polyester, on glass, reversibility, J 67A6-246, 601

(1963). polyesters and other polymers to glass and other

substrates, 3963. polymer molecules at low surface coverage, 6586. polymer, one-dimensional model, 6554. polymers by ellipsometry, M256, p. 281.

silicon by ellipsometry, M256, p. 255.

Advances, cryogenic engineering, 5630; 5904.

electrical instrumentation, 6587.

electronics, nightglow, 5504. ionospheric mapping by numerical methods, TN337.

orthonormalizing computation, 3964.

state-of-art of low noise beam-type microwave

tubes 1960-1963, J 68D5-365, 657 (1964). ADP crystals, preliminary studies on the characterization of solution-grown, 8955. Aerial image, measurement of contrast, 4167. Aerodynamic phenomena in stellar atmospheres, 4252A. Aeronomy, atmospheric sciences, 4983.

equatorial, introduction to the international symposium, 5426. review of photodetachment and related negative ion processes, 5885. Aerosol packaged products, progress report, 6313. Aerosols, measures and weights, 6534. weight checking, 9138. Affecting, factors, creep behavior of age-hardenable

alloy, 5672. AFMAG anomalies, calculation, 3679. Afterglows and atomic flames, color phenomena asso- ciated with energy transfer, J 67A4-228, 379

(1963). Afterglows, helium, dissociative recombination, 6707. helium-nitrogen, ESR measurement of metastable atomic nitrogen, 6742. helium, visible, short-duration, 5657. "pink", nitrogen in the vacuum ultraviolet, absorption spectrum, 6428. Ag-AgCl electrode in 5% aqueous mannitol, standard

potential, 6392. Agar impression materials, some physical characteristics, 9022. Age-hardenable alloy, some factors affecting creep be- havior, 5672. indium resonance for D-D neutrons in heavy water,

3965. Aged-irradiated polystyrenes, spectra, electron spin resonance, 5332. Agents, therapeutic, and dental materials; composition, work and interrelation of international and

national organization engaged in the standardization, 6647. Aggregate, reactive limestone, 4591; 4594. Aggregation, matrix models of resource flows, 6588. Agreement, measurement, achievement among electrical standards laboratories, 5177.

Air, aldehyde in, detection and estimation of low concentrations, 3496. alpha particles, collection of ions produced by, 3471. argon, carbon dioxide, carbon monoxide, hydrogen,

nitrogen, oxygen, and steam, tables of thermo- dynamic and transport properties, 3806. bearings, application to an electrodynamic vibration standard, J 67C4-144, 327 (1963).

capacitor, an experimental 350-kv, 1 picofarad,

5910.

capacitors, precision, voltage dependence, J 69C4-

207, 265 (1965).

chilled, distribution in refrigeration trailers, 4521.

core primary radio frequency permeameter for re- versible permeability measurements, 5186.

dielectric, Mono.96. dielectric coaxial cables as cryogenic transfer lines, 5180. drag, effect on motion of a filament struck trans- versely by a high-speed projectile, J 66C4-107, 317 (1962). drag on a textile yarn struck transversely by a high-velocity projectile, experimental determination, J 68C3-162, 177 (1964).

ducts, scattering of cobalt-60 gamma radiation, TN74 (PB161575).

entrainment of standard Ottawa sand, test method, 3408A. 477
flowing through an underground tunnel, heating and cooling, J 65C3-66, 157 (1961). Force Cambridge Research Laboratories, Sagamore

Hill Radio Observatory, Bedford, Mass., J 68D5-364, 632 (1964). Force housing projects, two, heating performance

of air-to-air heat pumps, 6111A. gap method for the precise determination of the

dielectric constant and loss angle of solid-disk specimens, techniques for using, 6423. gaseous pollutants, isolation, identification, and esti- mation, 251B. ground propagation in band nine, long-term characteristics, 5451. highly ionized, thermodynamic properties, 2394A.

index of refraction on, the absorption and dispersion

of centimeter waves by gases, J 67D6-297, 631

(1963).

infiltrated, in ten electrically-heated houses, field measurements, 5359.

ionization produced, 4008.

Air, ionospheric F-region, effect of ion-drag on the

neutral, 9075.

liquid, 4145A.

moist, plans for proposed new tables of the termo- dynamic properties, 8944. nitrogen, and carbon dioxide, absolute measurement

of W for Po-10 alpha particles, 3958. pollution studies, TN274.

radio refractive index, 5038. stream, supersonic, optical study of boundary-layer

transition processes, 3699.

tables of thermodynamic properties, in chemical

equilibrium including second virial corrections from 1500°K to 15,000°K, 9055. Air-blown asphalts, 4995.

asphalts, oxidation rates of, by infrared spectro- scopy, 4575. Air-conditioning calorimetry, investigation of psychrometric measurement techniques, 6597. Engineers, semi-annual meeting, 6156.

units, condensate collection as a measuring tech- nique for studying cooling capacity, 5256A.

Air-to-air heat pumps, 4635. analysis of electric energy usage in Air Force

houses equipped with, Mono.51. residential, for USAF, studies, 3320.

split-type residential, 4828. two Air Force housing projects, heating perform- mance, 6111A. Airborne microwave refractometer system, noise tests, 6888.

television coverage in the presence of co-channel

interference, TN134 (PB161635).

Aircraft beam specimens, programmed maneuverspectrum fatigue test, 5598.

bolts and bolted joints, applications, some problems

fatigue, TN136 (PB161637).

interference patterns in troposcatter reception, some implications, J 67D4-276, 405 (1963). range of a fleet, J 65B4-61, 237 (1961).

reflection interference patterns in troposcatter re- ception, J 67D4-276, 405 (1963). storage batteries, 3419. Airglow, auroral research, achievements and prospects, 1251A.

excitation by gyrowaves, power density require- ments, J 65D4-135, 321 (1961).

excitation by local electric fields in the aurora,

6060. comments, 2058A. IQSY, photometric observations, 5564.

night, latitude survey, 6547. ozone, influence of metastable oxygen molecules,

6451. photometer, J 65C4-73, 213 (1961).

photometers, methods of calibration, at Fritz Peak

Observatory, 5480.

radio, ionosphere observations during IGY, 3289. research, 5181. research in the United States, 3419A. Airy functions, AMS55.

tabulation, TN228.

Al, Be, and Ge, observed line shapes of collective excitations, 6242. Alaskan earthquake of March 28, 1964, ionospheric ef- fects observed around the time, 6815. Albedo, high energy X-ray photon, 6112. Albrecht's method, rapid determination of absorption

corrections, 3118. A1C1 and Alf: hierh temperature microwave spectro- scopy, 6781. Alcohol, polymorphism in isopropyl, 5577. Alcohol-water solvents, 4709.

acids and bases, 6579. interpretation of pH measurements. 5423. Aldehyde in air, detection and estimation of low concentrations, 3496. Aldehydes, aliphatic, in the gas phase, triplet-state en- ergy transfer from acetone, 6513. Aldehydes and aldoses-.? -i with sodium chlorite, mechanism for oxidation. Tritium-labeled compounds. XI, J 68A3-276. 301 (1964).

Alditols-l-t and alditols,-2-£. Tritium-labeled compounds

VI, J 64A5-67, 433 (1960). Aldol condensations, TN274.

reactions, higher ketoses, 4967.

reactions, svnthesis of hiorh ketoses. 6417. Aldonic acids, 5182; 5183; 5184; 5185; 5440. Aldopyranosu'es. acetvlated. infrared absorption spectra. III. Conformations of the pyranoid sugars, J 64A5-65, 405 (1960).

infrared absorption spectra of some aldopyranosides. conformations of the pyranoid sugars, J 64A5-48, 239 (1960). Aldoses with bromine, oxidation of, J 66A3-157, 233

(1962) . Aldoses-./ and aldehydes with sodium chlorite, mechanism for oxidation. Tritium-labeled compounds. XI, J 68A3-276, 301 (1964). isotope effects in oxidation, J 67A6-241, 569 (1963). with bromine, isotope effects in the oxidation of. Tri+ium-labeled compounds. X, J 68A2-262, 145

(1964). Alf and A1C1: high temperature microwave spectroscopy,

6781. Algebra, matrix, for calculating multi-component mixtures, 3626. Algebraic number theory, normal matrices in some

problems, 1081A.

Alginate impression materials by a specification, definition, 9067. ALGOL-60, status report, 3949. Algorithm, all-integer programming, with parabolic

constraints, 5188. error analysis of Miller's recurrence, 6047. obtaining an orthogonal set of individual degrees of freedom for error, J 67B1-89, 19 (1963). primal (all-integer) integer programming, J 69B3-

154, 213 (1965). rapid binary division. 3966. Aligned E-region irregularities, field, identified with

acoustic plasma waves, 5356. Alignment interferometer, 5187; J 67C4-141, 307

(1963) . techniques of the rotary-vane attenuator, gearing

errors as related, 6771. Aliphatic aldehydes in the gas phase, triplet-state en- ergy transfer from acetone, 6513. saturated, systems, 4910.

soap, 4631. Alkali-aggregate reaction, binary silicate glasses in the

study, 3448. 478
Alkali, borates an density characteristics of some other binary classes, density and expansivity, 682A.

I borosilicate melts, rearrangement kinetics of the

liquid-liquid immiscible microphases, 8983. halide crystals, application, 5814.

halide, determination of work function from the

ratio of positive to negative surface ionization, 9069. halide lattices, vibrational spectrum of cyanate ion,

I 3368. isomerization of D-manno-3-heptulose, 6455. metal vapors and organic halides, inhibition of opposed-jet methane-air diffusion flames, effects, 5411. metal with a rare gas, 4703.

resistance of porcelain enamels, standard test for determining, 6393.

silicate binary glasses, structural and thermal ex- pansions, 3796.

silicate binarv glasses, vitrons as flow units, J 65A2-

94, 117 (1961). treatment and gamma radiation, influence, pyrolysis

of polytrifluoroethylene, 6324. Alkaline earth cation distribution in vitreous borates,

5905. rearrangement of sugars, TN274.

solutions, resistance of enamels to corrosion, 2302A.

Alkyl halides, thermal decomposition, by a shock-tube,

6499.

radicals, hydrogen atoms at low temperatures, dis- proportionation-combination reactions, 5996.

radicals, several, relative rates at two carbon posi- tions and derived heats of formation: hydrogen atom addition to olefins, 6785. All-glass-sorption vacuum trap, 5906. All-integer programming algorithm with parabolic constraints, 5188. Allene and allene-dj, infrared measurements, 6801. Allotropy in some rare-earth metals at high-pressure,

5907.

Alloy, age-hardenable, some factors affecting the creep

behavior, 5672. cement and dental: x-ray spectrochemical analysis

of materials, 9145.

coatings, nickel-aluminum, produced by electro- deposition and diffusion, 3664. fast-melting, forms water jacket for small klystrons, 4652. magnesium, stress-corrosion cracking of the AZ31B,

J 65C3-67, 165 (1961).

particles, silver, dimensional changes of dental amalgam associated with strain release, 6694. pressure depedence of the internal field at the B9 Co

nucleus in a 99.5% Ni-0.5% C, 8957. spherical particles, properties of dental amalgam,

4864.

Alloy, aluminum, cathodic protection, J 68C4-175, 283

(1964). chain link fencing, CS269-65.

effects of cathodic currents on corrosion, J 68D4-

175, 283 (1964).

effects of fatigue crack on fatigue strength, 9073.

Alloys, adherence of ceramic coatings, 1041B.

age-hardenable, characteristics, 5056. annealing of vacancies in dilute, 9059. cast aluminum, stress corrosion of high strength,

4944. compounds, acetinide element, 4738. copper and silver, electrodeposition, principles and

practice, Vol. I, General survey principles and

Vol. II, Practical specific information, 5322. copper-base, accuracy of solution X-ray spectro- metric analysis of, M260-5.

effect of environment on fatigue strengths of four

selected, 9074. electrodeposition, past, present and future, 6725.

electrodeposition, principles and practice Vol. I,

General survey principles, and alloys of copper and of silver, and Vol. II, Practical specific information, 5322.

fee binary, relation of the stacking fault energy

to segregation at stacking faults and to the occurrence of phase boundaries, 8988.

ferrous, corrosion rates of, measured by polarization techniques (Fe, Cr and Fe-Cr-Si), 5268. gallium-palladium, dental filling materials, 6098. hard gallium, detailed techniques for preparing and

using, TN140 (PB161641). hard gallium, use as low contact resistance elec- trodes and for bonding thermocouples into samples, 3563. indium, in the intermediate state, thermal resist- ance, 3876.

iron, 4246.

iron-nickel, commercial, thermal conductivity, 4387. lead-indium, knight-shifts and line widths of the nuclear magnetic resonance of Pb207

, 5439.

lead, nuclear magnetic resonance, 6233. magnesium, some mechanical properties at low

temperatures, 3775. metals, commercial, low-temperature transport

properties, 3615; 3616; 3617.

nickel, 5503.

nickel cobalt, 4706. nine corrosion-resistant, enthalpy and specific heat

at high temperature, J 65C1-56, 65 (1961). nuclear resonance study of hyperfine fields in nickel-rich nickel-cobalt, 8900. precious saving by intelligent use of alternatives, 304A. rhodium-uranium, determination of rhodium by precipitation with hydrogen sulfide, 5287.

silver and copper, electrodeposition principles, and

practice. Vol. I, General survey principles, and

Vol. II, Practical specific information, 5322.

solute nuclear magnetic resonances in primary lead, 9012. superconducting indium lead, four critical fields, 6080. titanium and high-temperature, spectroscopic stand- ard samples, 4303.

Alloys, dilute ferromagnetic, nuclear magnetic relaxation of the impurity nucleus, 6232.

nickel in cobalt, 4794.

nickel in iron, nuclear resonance and the hyperfine

field, 5521. theory of thermal diffusion, 5073. Almost fifty years of URSI, J 65D4-134, 317 (1961).

A1_>0, gaseous, infrared spectrum and structure, 6133. AI0O3 electron microscope speciments, jet thinning devices for preparation, 6168. Alouette I satellite, VLF noise bands observed, J 69D1-

443, 69 (1965).

ionic magnetic-field and plasma studies, 5908. observations at the CRPL, studies, 6406A.

topside sounder satellite, minimum telemetry receiv- ing system, TN222.

topside sounder satellite, spread-F observations,

6388. Alpha-alumina, heating rate as a test of adiabatic calorimeters and the heat capacity, 5381. Alpha-aluminum oxide crystals, observations, J 69A3-

346, 271 (1965). Alpha and beta-D-glucose with bromine, oxidation, 4211. beta particles in smear samples, 5581.

brass, X-ray diffraction measurement of intragranular misorientation, J 65C1-55, 57 (1961).

ionization, search for a slow component, 5655. Lyman, radiation in ion atom collisions, 4861. nitrogen, solid, electron diffraction studies, 4059. Alpha particles in air, collection of ions produced, 3471.

5.3 meV, from platinum and monel metal, experi- mental study of backscattering, 6592. mesons and protons, penetration, 5556. 479
polonium-210, in nitrogen, argon, and an argon- methane mixture, absolute measux-ement of W,

6577. Alpha-D-glucose-l-c14

, 4473. Alpha-D-mannose from ivory-nut meal, 4474. Alpha-L-galactose, 4775. Alphabetical index to tables of chemical kinetics, ho- mogeneous reactions, Suppl. 2 to C510. Alphanumeric characters and other symbols, legibility.

I. A permuted title index and bibliography, M262-1.

Alteration by KBr pellet preparation, of the Muscovite

absorption spectrum, 5185. electron density of the lower ionsphere with groundbased transmitters, J 69D1-445, 83 (1965). Muscovite absorption spectrum by KBr pellet preparation, 5185. Alternating, TN280.

direct current, system for accurate voltage measurements, 6568; 6569.

Altitude, high, nuclear explosion of July 9, 1962, ob- servations of synchrotron radio noise at the magnetic equator following, 5528. observation techniques, 3565.

starfish nuclear explosion, geomagnetic effect, 6252. Alum, chromium methylamine, adiabatic demagnetization, 641A. Alum-coagulated SBR synthetic rubber by a complete

solution procedure, chemical analysis, 3996. Alumina films, recrystallization of anodic, 8986. hot-pressed, and white sapphire, resistance of to

collision with liquid drops, J 64A6-72, 499

(1960) . molten, solubility of water vapor, 6478. windows, production, 8959. Young's modulus, 4618. Aluminoferrites, calcium reaction with water, J 68A5-

293, 453 (1964). Aluminous cements, hydrated, effect of heat-treatment on constitution and mechanical properties, 3192A. Aluminum, audiofrequency compliances of prestressed

quartz, fused silica, 5931. crystallographic changes with substitution for iron

in dicalcium ferrite, 5271.

electrical properties cryogenic electromagnets, TN

218. evaporated, vacuum ultraviolet reflectance, before and during oxidation, 5542.

fluoride, heat of formation, by direct combination

of the elements, J 69A2-335, 137 (1965).

foils, transmission and reflection of electrons, TN

187. formation and study of anodic films, M256, p. 213. high-purity, transverse magnetoresistance from 4

to 30 deg. K, 5831. hydrogen, carbon, and water, X-ray attenuation coefficients from 13 to 80 Mev, 3916. magnet cooled with liquid hydrogen, 4478. monofluoride, microwave spectrum, 5486.

nails, CS263-64.

nitride, dislocations and stacking faults, 4041.

optical constants, 3697. planar twin boundary, 5567. prestressed quartz, and fused silica, 4503. titanium, zirconium, and iron, method for the sep- aration of from one another and for their sub- sequent determination, J 64A6-79, 535 (1960). 20-kev electrons, 4844.

steel, a study by polarization techniques of the corrosion rates underground, J 65C4-80, 271

(1961) . vacuum ultraviolet, 4817. wound magnet, HVcooled, high field liquid, 5383. Aluminum alloy chain link fencing, CS269-65. changes in influence of atmospheric humidity during fatigue, J 68C2-155, 91 (1964).

effect of a fatigue crack on the fatigue strength, 9073.

effects of cathodic currents on the corrosion, J 68C4-

175, 283 (1964). Aluminum alloys, highstrength cast, stress corrosion, 4944. ten years weathering data, 5731. Aluminum carbide, (AliC3 ), heat capacity measurements, from 15 to 1173°K. Thermodynamic properties from 0 to 2000°K, J 69A5-364, 423 (1965). decoration of dislocations, 5744.

dissociation pressure, using a rotating Knudsen

cell, J 70A3-401, 253 (1966). flame-spraying, studies, 3801. heat of combustion and heat of formation, J 68A6-

315, 661 (1964). oxide and thorium oxide from 100° to 1100°K, 4730. pure, grown by the Verneuil process, 6730. tungsten oxide system, phase equilibria, 8935. Aluminum-doped rutile on equilibrium oxygen pressure and temperature, dependence of electrical conductivity and thermoelectric power, 5278. Aluminus, 3615. Amalgam, dental, associated with strain release in silver alloy particles, dimensional changes, 6694.

effect of loading, time of trituration and test temperature on compressive strength, 5312. made from spherical alloy particles, 4864. Amalgam exchange, 4257; 4258. prepared with a standardized mechanical technic, early strength, flow and dimensional changes

obtained, 6003. Amalgams, physical properties, effect of mercury-alloy

ratio, 4049.

tensile properties, 4928. Ambipolar diffusion, non-linear, 4791.

diffusions of an isothermal plasma across magnetic

field, nonlinear, 6226. American Dental Association and the Federal Govern- ment at NBS, some activities of the cooperative dental research between, 6373.

specifications for dental materials, 3420; 4776. American Rubber Industry, NBS activities, 5497. research, 4899. Society for Testing and Materials, committee D-20

on plastics, standards development, 3789. Society of Heating, Refrigerating and Air Conditioning Engineers, semi-annual meeting, 6156. Americana Annual, plastics, 5570; 6291. Amides, monomeric, with lithium perchlorate, 4539.

planarity, 5122. Amine buffers for pH control, 3967. 2-Amino-2(hydroxymethyl)-l, 3-propanediol, dissocia- tion of, in 50-percent methanol, J 69A3-345, 263 (1965). Aminomethane and t?-is hydrochloride in aqueous solu- tion at 25 °C, osmotic and activity coefficients of its (hydroxymethyl), 8929. 4-Aminopyridinium ion in water from 0° to 50°C, dis- sociation constant and related thermodynamic

quantities, J 64A5-66, 427 (1960). Aminopyrimidines with formaldehyde, reaction, J 66A1-

141, 65 (1962). Ammonia and water, vacuum ultraviolet photolysis, 5112. aqueous, precipitation of the elements on addition,

to their clear solution, 3719. beam maser as a standard of frequency, 4979. maser, short time stability quartz-crystal oscilla- tor as a measure, 3299.

solid matrix at low temperatures, photolysis, 3711.

solid methane, and ice in the vacuum ultraviolet, absorption spectra, 3416.

ultraviolet absorption spectra in solid argon at 4.2°K, 4397. vibration-rotation bands, 3909. 480
Ammonia-maser-spectrum analyzer, high-resolution,

T 3930. Ammonium dihydrogen phosphate, growth layers, 6775.

solutions, in the saturation region, electrolytic conductance 5324. Ammonium perchlorate, sodium perchlorate, and lithium

perchlorate, heats of formation, J 65A1-85,

66 (1961). quarternary and related compounds that suppress

plant growth, synthesis and biological activity, 3325.

sulfate mixtures, crystallization of anhydrous cop- per sulfate from sulfuric acid, J 68A3-278, 313

(1964). 2-ammonium-2-methyl-l, 3-proponediol in water from

0 to 50° and related thermodynamic quantities, 4601. Amorphous polymers, volume relaxations, 9134.

solids, effect of hydrostatic pressure upon the re- laxation of birefringence, J 65A4-112, 283

(1961) . tetrahedral networks, condensation model producing crystalline or, 5870. Amount of grandular materials in sulfur mortars,

simple method for measuring, 6562. Amounts, small, of narrowly classified particles, sieve techniques for obtaining, 6366. Ampere, 6827. measurement unit, 6677. Amplified waves leading to transition in a boundary

layer with zero pressure gradient, evolution, 3206.

Amplifier, balanced, TN331.

diode, 1311A.

magnetic, for use with diode logic, 5137; 5876.

Amplifiers, magnetic, for digital computers, 2622a. parametric, J 64D6-96, 751 (1960).

transistor P-A, 3891. Amplitude and phase distribution, Atlas of Fourier coefficients of diurnal variation of foF2, TN305.

diversity in over-water transmissions at two micro- wave frequencies, TN307.

low- and very low-radiofrequency ground wave, TN60 (PB161561).

statistical distribution, multiply scattered field, J

66D3-191, 231 (1962). Amplitude, angular scintillations of the radio source Cygnus-A observed at Boulder, Colo., J 65D4-

137, 333 (1961). converter, time delay, 3124.

distribution for radio signals reflected by meteor

trails, J 64D5-80, 449 (1960) ; J 66D3-192, 241

(1962) . distribution of VLF atmospheric noise, effect of receiver bandwidth, J 65D3-132, 299 (1961). fading of continuous HF radio waves, spatial properties, J 68D12-435, 1309 (1964).

scintillations, Cassiopeia (23N5A) radio source, observed variations, 3675. Amplitude-probability distribution, atmospheric radio

noise, J 68D6-370, 723 (1964) ; Mono.23.

function for atmospheric radio noise from one bandwidth to another, conversion, J 66D6-231,

713 (1962). Amplitudes, large, calibration of vibration pickups,

3991.

large, vibration pickups, 4512.

small, optical calibration of vibration pickups, 4209. SU (6) w photoproduction and meson-baryon scattering, 9053.

vibration, interferometric measurement, note, 6229. Analcite and free energy change with pressure of analcite reactions, high pressure form, 3567. Analog computer, method for obtaininp Nt oscillator strength from arc spectroscopic measurements,

6231.

theory and biomedical applications, 4385. use in side-on arc spectroscopy, 6488. Analog functions, neutron model, 4431. simulation of zone melting, J 65C2-60, 97 (1961);

5915. simulation, transistor for use, 4798. Analog-digital differential analyzer, 3135. (CADDA), 3373A.

combined, 3473. quantum field theory, mathematical basis. On the

statistical theory of electromagnetic waves in a

fluctuating medium (II) , Mono.79. Analogies between theories of antenna arrays and passive networks, 6599. Analysis, absolute torsional pendulum viscometer, 3421. absorption spectrum of YbCl3 • 6H20 , 3 97 5. accumulated error in a hierarchy of calibrations, 3422.

calibration, operational characteristics of inductive voltage dividers, 5737. cement, methods, 5478. chemical, 6632. chemical, statistics, 5697. chemical, white cast iron standards, methods, M260-6.

coaxial two-terminal conical capacitor, Mono.46. copper-base alloys, accuracy of solution X-ray

spectrometric, M260-5.

description of the third spectrum of cerium, 6683. design of cryogenic equipment and processes, modern methods, 6216.

differential phase shifter, 5916.

differential thermal, 4584.

digital computer, digital recording of electrocardio- graphic data, 3182.

digital electronic computer, preparation of electro- cardiographic data, 3722.

direct quantitative, of microstructures by a digital computer, 5992.

distillation, 4602; 5997.

effects of ground reflection in line-of-sight phase

systems, 6589.

electric energy usage in Air Force houses equipped with air-to-air heat pumps, Mono.51.

electrochemical: studies of acids, bases, and salts by EMF, conductance, optical and kinetic metods, July 1964 to June 1965, TN271.

electron density profile topside sounder ionograms,

6025. ellipsometer measurements and calculation of reflection coefficients from thin films, Fortran program, TN242.

emission spectrometry, 4901. end-group, 4633.

error, Miller's recurrence algorithm, 6047. errors in calibration of electric instruments, 3968. evaluating computer systems, and design work in the Federal Government, 6053. families of curves, J 67A3-214, 259 (1963).

fractionally replicated 2 m

3

n designs, 3426.

frost phenomena on a cryosurface, 5917. functional, Banach's contraction theorem, J 69B3-

151, 179 (1965).

further, modulated subcarrier technique of atten- uation measurement, 6094. harmonic, stationary process, components of power,

3821. hydroxl radical vibration-rotation spectrum be- tween 3,900°A and 15,000°A, 4489. ionospheric vertical soundings for electron density

profile data, TN146 (PB161647).

isotopic methods, 4723. Latin squares with a certain type of row-column

interaction, 3330.

linear arrays focused in the Fresnel region, J 69D7-533, 989 (1965).

liquid sugar, 3136. 481
LF ionospheric radio propagation phenomena,

J 65D5-156, 507 (1961). mathematical, self ignition, 5138. mathematical, thermal environment in under- ground shelters, 4743. methyl methacrylate copolymers by gas chromatography, 3427. microwave observations of Venus, J 69D12-602,

1583 (1965). microwave radiometer for precise standardization

of noise sources, J 67C2-127, 139 (1963). molecular structure and chemical groups, 4490. monomers and polymeric materials — plastics, resins, rubbers, fibers, 3138. numerical, thermal environment of occupied under- ground spaces with finite cover using a digital computer, 6236. pedestrian queueing, J 67B4-105, 229 (1963). photonuclear cross section, 3137. place of radiochemical methods: today and tomorrow, 9090. polarization rotation recordings of satellite radio

signals, 3678A.

polargraphic, titanium (IV) —EDTA complexes,

9091. polargraphic, white lead and zinc oxide in white

paint pigments, 9092. pressure and stress distribution under rigid Bridg- man-type anvils, 5189. pulse-height, charge-storage, 4518.

Purification Section: summary of activities, July

1964 to June 1965, TN273.

pyrolyzates of polystyrene and poly (methyl methacrylate) by gas chromatography, 3974. radio propagation data, statistical theory, J 66D5-

217,571 (1962). radiochemical, 4874. radiochemical: activation analysis, instrumentation, radiation techniques, and radioisotope

techniques, July 1963 to June 1964, TN248.

radiochemical methods (report on Salzburg conference), 8976. rotation errors of rotary vane waveguide attenuators; 4488; 5196. rubber and related products, methods, 5479. rubber and rubber products, 5197.

self ignition, mathematical, 5138.

solid phase behavior, normal paraffins, J 66A3-158,

241 (1962). spectrochemical : optical spectrometry, X-ray fluo- rescence spectrometry, and electron probe

microanalysis techniques, June 1964 to June

1965, TN272.

spectrochemical, suggested practices for establish- ing sampling and sample preparation tech- niques, 6409. spectrum, extremely low frequency variations of quartz oscillators, 5683. spectrum of neutral atomic bromine (Br I), J 67A6-238, 505 (1963). spectrum of praseodymium trichloride, 5809. spectrum of triply ionized praseodymium, 6600.

statistical, experimental data, 6480. substoichiometric radiometric, 9050. summary, sessions I and II, symposium on x-ray

electron probe, 5715. synthesis of nonuniform transmission lines or

stratified layers, J 67D3-267, 331 (1963).

third spectrum of praseodymium, 5198. time variations in tropospheric refractive index and apparent radio path length, 3423. two-factor classifications with respect to life tests, 3428. two infrared bands CH2 D2. J 67A1-191, 27 (1963). uranium concentrates at the National Bureau

of Standards, M260-8.

use in sugar, special techniques, 5680. variance, 851A.

variance, estimation of weighting factors in linear regression, 6051. VLF mode propagation for a variable ionosphere

• height, J 66D4-207, 453 (1962). W-spin, weak decays in U (12) , 9142. x-ray spectrochemical, materials: cement and

dental alloys, 9145. Analytic functions, note on bivariate linear interpolation, 3267. Analytical chemistry, 5199. acid bases, 6578.

distillation, handbook XIII, Methods of separation,

5301. polymers, 3138; 4490; 5101. Analytical data, evaluation and interpretation: accu- racy and precision, 3129. expressions for the thermal emittance of shallow

cylindrical cavities, test, 6570. laboratory problems, 3429. methods, elementary, AMS55.

methods involving linear calibration curves, evaluation of the precision; with measure of precision, 6537. obtained with the silver-silver chloride electrode in methanol water solvents, standardization, 9036. procedure, M260-8.

results, graphical evaluation, 3224. standards, M260-10.

standards for trace elements in petroleum products, Mono.54.

study, creep deflection, structural beams, 3430.

tool, polarography, 6296. Analytical procedures, accuracy, 4470. how to evaluate accuracy, 4684. valences of elements, 3902. Analyticity and probability properties of one-dimensional Brownian motion, J 65B4-64, 251

(1961) . Analyzers and oscillatory systems, resolution limits, J 67A5-235, 461 (1963). Anderson's theory, comparison of experimental results, 6311. Angle as a fourth fundamental quantity, J 66B3-78, 97

(1962) . loss, solid-disk specimens, techniques for using air- gap method for precise determination of the

dielectric constant, 6423.

solar zenith, annual variation in E-layer ionization, dependence of critical frequency of ionospheric

E-layer, 6680. Angles, focus, J 69D6-519, 871 (1965). grazing computation of diffraction fields, 3680.

insects, and weather, J 68D8-387, 895 (1964). opening, electron-positron pairs, 5546. upon HF radio signals propagated over long dis- tances, effect of antenna radiation, J 65D2-115,

167 (1961). Angstrom arcs, 5022. Angular, amplitude scintillations of the radio source Cygnus-A observed at Boulder, Colo., J 65D4-

137,333 (1961). dependence, refractive index in the ionosphere, J 69D3-476, 395 (1965).

distribution and form, proton groups at about Q-0 Mev in the proton spectra of (d, p) reactions

of heavy nuclei, 5364.

distribution, beta particles from oriented cerium141 nuclei, 3813A.

distributions, electrons transmitted through sap- phire (AleO.,) foils, energy spectra, 6043.

distributions, molecular dissociation products, 4491. energy distributions of resultant fast protons,

study, dissociative ionization of H2 , 5300.

linear, and geometrical measurements of solid bodies, M265. momentum distribution, emission spectrum, OH

(

2 S

+

) in photodissociation of H2 0, 5918. momentum matrices, 5091 ; 5092.

•182
scattering law for the moon at 6-meter wavelength, 6601. Anharmonic oscillators by perturbation methods, 5126A.

Aiiharmonicity on vibrational energy transfer, effects, 6010. Anhydrous copper sulfate, crystallization, from sulfuric acid-ammonium sulfate mixtures, J 68A3-278,

313 (1964). sodium trimetaphosphate, NaaPaOu, and the monohydrate, NaaPsOo • H,0, the structures, 9095. Anion exchange of hafnium from zirconium, J 65A1-87,

75 (1961); J 66A6-187, 517 (1962). Frenkel pair in calcium fluoride, energy of formation, 6738. Anionic polmerization, homogeneous, 1. Molecular

weights of polystyrene initiated by sodium

naphthalene, 5390. homogeneous, statistics of irreversible termination,

5698. isoprene at low concentrations of polyisoprenyl- , lithium, J 69A2-337, 159 (1965).

styrene, solvent participation, 6370. Anisotropic conducting media in situ, methods of measuring the resistivities, J 66C3-98, 217 (1962). curved ionosphere, concerning solutions of the VLF

mode problem, J 67D3-264, 297 (1963).

electron velocity distribution for cyclotron absorption of whistlers and VLF emissions, J 69D11-

573, 1403 (1965).

fluids, theory, 3882. ionosphere, concentric and a spherical earth, com- ment on the mode theory of VLF radio propagation, 5242.

irregularities, propagation of spherical waves

through an ionosphere, J 66D5-223, 621 (1962). media, electrodvnamics of moving, first-order theory, J 69D3-477, 401 (1965). media, radiation from sources immersed in, theory, J 68B3-125, 119 (1964). medium, continuously varying stratified, propagation of electromagnetic waves, J 68D4-356, 407 (1964). polymer system, extension of the Flory-Rehner

theory of swelling, J 65A6-130, 485 (1961).

regions, source-excited, on the use of refractive in- dex diagrams, J 69D2-450, 155 (1965). system, Flory-Rehner theory of swelling, 4085. Anisotropics in angular distributions of molecular dis- sociation products, 4491. Anisotropy, geometrical, magnetic materials in waveguides and cavities, 3220.

opitcal, holmium nucleus, direct observation, 6699. Anistic (/j-methoxybenzoic) acid in the system ethanol- water at 25° C, dissociation constant, J 64A4-

58, 351 (1960). Annealed titanium at 100°, 25°, —78°, and —196°C,

effect of notch geometry on tensile properties, 3194. Annealing, borosilicate glass, further studies, J 70A2-

390, 147 (1966). vacancies in dilute alloys, 9059. Annotated bibliography on soft X-ray spectroscopy, Mono.52.

observatory report. NBS spectroscopy, 5201; 5919. observatory report, research at JILA, 5200.

plastics, Americana, 5570; 6291. variation in E-layer ionization, dependence of

critical frequency of the ionospheric E-layer on solar zenith angle, 6680. Annual, report of the Director of the National Bureau

of Standards for fiscal years ending June 30: 1960: M237;

1961: M242;

1962: M246;

1963: M255;

1964: M264;

1965: M279.

IAU commission 14, 4492. National Bureau of Standards, spectroscopy, 3430A; 5919; 6602. National Conference of Standards Leboratories, M248, p. 111. Annular slot antennas, admittance, radiating into a plasma layer, J 68D3-348, 317 (1964). Anode, silver, chloride content of diffusion layer, 3467. Anodes, gold, in acidic oxalate solutions, optical invest- igations of film formation and removal, 6272. Anodic alumina films, recrystallization, 8986. Anomalies, AFMAG, calculation, 3679. radio noise, August 1958, 5619. VLF, observed at State College, Pa., during the U.S. 1962 high-altitude nuclear tests, J 68D1-

326, 125 (1964). Anomalous decrease of the elastic moduli at very low

temperatures in some 300 series stainless

steels, 6590. inversion in cristobalite, 3814. NMR linewidth in lithium and sodium, 6248. transmission of rare gases for electrons of subexcitation energies, 5920. Anomaly, F-region, seasonal, 5756. response of semi-conductor detector at low temperature, 5921. response of silicon semiconductor radiation detec- tors at low temperatures, investigation, 6813. Another extension of Heinz's inequality, J 65B2-51, 129

(1961). Antarctic ionosphere, characteristic variations, 6627. Antarctica, ionosphere, 5014. Antenna array, Mono.95. arrays, large, probabilistic approach to the problem, J 68D9-401, 1011 (1964). arrays, linear, application of the inverse Z-trans- form theory to synthesis, 5909. arrays, passive networks, analogies between theories, 6599. beam elevation angle for control of tropospheric

interference, TN180; 4493. Beverage wave, optimum reception pattern at very low frequencies, J 67D4-274, 387 (1963). cavity-backed rectangular slot, Hallen's method in the problem, J 67D2-259, 237 (1963).

circular conducting-disk ground system on the sur- face of a lossv half-space, impedance of a monopole, J 65D2-118, 183 (1961).

circular loop, immersed shallowly in a conducting medium, J 69D9-559, 1243 Q965).

corrugated cylinder, resonance excitation, 3692. coupling error in direction finders, J 65D4-140,

363 (1961). cut-back factor, TN330.

cylindrical, current on and input impedance,

J 66D1-170, 15 (1962). data processing, automatic, bibliography, J 64D6-

96, 743 (I960).

effect of dissipative medium of finite size, J 67D4-

275, 397 (1963).

electronically scanned, current development 5272. flush-mounted leaky-wave, on conducting circular

cylinder, J 66D6-236, 783 (1962).

gain, effect of lossy earth, J 68D2-339, 251 (1964) ; Part II, J 68D7-378, 813 (1964).

gain, path, and comments on properties of 400 mcps long-distance tropospheric circuits, 5555. ground-based, possible influence of the ionosphere, J 66D5-216, 563 (1962). half-wave cylindrical in a dissipative medium: cur- rent and impedance, J 66D4-70, 365 (1960). high gain, very low side-lobe, with capability for beam slewing, J 64D5-93, 557 (1960).

high-resolution rapid-scan, J 65D1-108, 101 (1961).

infinite cylindrical, asymptotic behavior of the current, J 67D4-277, 417 (1963). 483
infinte cylindrical, theory, including feedpoint

singularity in antenna current, J 66D2-186, 181

(1962).

insulated loops, immersed in a conducting medium,

J 68D11-428, 1249 (1964).

interaction with a hot plasma, theory of resonance

probes, J 68D11-417, 1171 (1964). Jicamarca radar in Peru, radio astronomy ob- servations with 8.4 x 10'nr 50 Mc/s, 8972. long cylindrical, variational solution for admittance, J 68D3-347, 311 (1964).

loop, insulated and loaded, immersed in a conduct- ing medium, J 69D2-465, 287 (1965). monopole, impedance, with radial-wire ground sys- tem on an imperfectly conducting half-space. Part II, J 68D2-328, 157 (1964).

oblique incidence receiving, array for a relative ionospheric opacity meter, TN78 (PB161579). optimum height for ionospheric scatter communication, 3701. over inhomogeneous ground plane, theory 5804. parabolic, at a frequency of 1040 Mc/s, 4746. plasma covered, electromagnetic properties, J 69D7-530, 965 (1965). radiation angles upon HF radio signals propagated

over long distances, effect, J 65D2-115, 167

(1961). small prolate spheroidal, in dissipative medium,

J 69D7-535, 1003 (1965).

slotted-sphere, immersed in compressible plasma,

theory. Part I, J 68D10-412, 1127 (1964); Part II, J 68D10-413, 1137 (1964).

static magnetic field, an approach to improve re- entry communications by suitable orientations, J 69D6-517, 851 (1965). surrounded by strongly ionized plasma sheath, radiation and admittance of insulated slotted- sphere, J 64D6-96, 525 (1960). temperatures at the auroral zone, 4299; 4920. theory, cylindrical, J 64D5-95, 569 (1960). theory over inhomogeneous ground plane, 5804.

toroid, small magnetic, imbedded in a highly con- ducting half space, J 69D4-501, 659 (1965). underground, useful radiation, J 65D1-106, 89

(1961) . vertical, Mono. 60. Antennae, slotted elliptic-cylinder, calculated patterns,

3155. Antennas, anisotropic ionized gases, irreversible power

and radiation resistance, J 69D10-565, 1313

(1965). annular slot, radiating into a plasma layer, ad- mittance, J 68D3-348, 317 (1964).

biconical, capacitance, in magneto-ionic media;

elliptical cone capacitance, J 69D2-466, 291

(1965).

biconical, capacitor type, J 68D2-329, 167 (1964). broad beam, use of dual-polarized, to determine the

extraterrestrial intensity of the cosmic radio

noise, at high frequencies, 5808. circular aperture, Fresnel region fields, J 65D2-

111, 137 (1961).

coil, theory, J 69D7-534, 997 (1965). concentric ring, with low sidelobes, investigation, 6596.

cylindrical, currents, charges, and near fields, J

69D3-481, 429 (1965).

dipole, curves of ground proximity loss, TN175;

J 67D5-289, 567 (1963).

dipole, ground, curves of input impedance change, Mono.72.

electric dipole, dielectric loading, J 66D5-215, 557

(1962) . electromagnetic theory, plasmas, plasma sheath, re-entry communication, J 67D2-257, 203

(1963) .

elevated, over a spherical earth, radiation patterns

in the lower ionosphere and Fresnel zones, Mono.38. experimental study of plasma sheath effects, J

69D6-516, 839 (1965).

finite-size corner-reflector, radiation patterns, 3734. ground based, note on E-field and H-field losses, 5153.

linear, driven from coaxial line, input admittance,

J 67D1-246, 83 (1963).

long, in air and in dissipative media, impedances,

J 67D3-269, 355 (1963).

lossy media, J 68D4-359, 468 (1964). 1957-1959, J 64D6-96, 731 (1960). radiation efficiency of half-wave dipole, 8969.

small, electric and magnetic, with cores of a lossy

dielectric, 67D4-279, 445 (1963). superdirective receiving, two- and three-loop, J

67D2-258, 215 (1963). surface and leaky wave, J 64D6-96, 746 (1960). very wide band—-1945 to the present, survey, J

66D1-168, 1 (1962). Anthracene fluorescence, study, excited by the ruling giant pulse laser, 5165. Antiferromagnetic KMnFn, ultrasonically induced nuclear spin transitions, 6517. Antimonide, indium, and indium arsenide, magnetoresistive effects, 3622. mechanical and electromechanical properties, 3632. thermal conductivity at low temperatures, 3354. Antioxidants, color tests, 4528. Antipodal focussing, TN182.

Antipode, transmitter's, experimental investigation of

signal strength in the area around, J 68D3-350, 333 (1964).

Antireciprocity, memory, statistical approach to irre- versible thermodynamics, 5922. Anvil, multi-, devices, 4552. Anvils, diamond, optical studies at high pressures, 4821.

rigid Bridgman-type, analysis of pressure and

stress distribution, 5189. Anzulene, naphthalene, electron impact studies of aro- matic hydrocarbons, 6028. Aperture, coated plane, radiation, J 68D4-354, 363

(1964).

field data, measured, Fresnel zone diffraction effects at 50 Gc/sec. determined, 5367.

large, performance of an Ebert spectrometer, 4953. Apex of a wedge surface, calculations of field, TN204.

Apparatus, controlled slack quenching, 3976.

detection of piezoelectric coupling, J 67C3-129, 197

(1963). determination of pressure-density-temperature re- lations and specific heats of hydrogen to 350 atmospheres at temperatures above 14° K, J

65C4-76, 231 (1961). determine the solid-vapor equilibria of binary cry- ogenic systems, 5190.

differential dielectric, for determining water added

to solvents, 5295. direct-current resistance, Mono.39.

electron optical study of low-density gas flow, 3431. freezing point, simplified, 5887. low-temperature, constructional materials, 4153A

radiochemical syntheses, TN274.

spectrophotometric measurements, TN274.

Apparel, expanded vinyl fabrics, CS258-63. Apparent temperature measured as the melting point

of some metal oxides in a solar furnace, 3432. volume of leather, determination, application of Archimedes' principle, 6429. APPA-TAPPI reference material program, 5923.

II. Effectiveness of a reference material in reducing

the between-laboratory variability of Tappi

standard T414 m-49, internal tearing resistance

of paper, 5202. 484
III. A discussion of lambda variance and its application to TAPPI standard T 414 m-49 for internal tearing resistance of paper, 5923. Inter-laboratory investigation of TAPPI standard T414 m-49, internal tearing resistance of paper,

4494. Appendix to ionspheric cross modulation: a microscopy

theory, J 69D1-442, 59 (1965). Appleton-Hartree formula, validity of some approximations, J 65D4-136, 323 (1961). Application, air bearings to an electrodvnamic vibration standard, J 67C4-144, 327 (1963).

alkali halide crystals, 5814. Archimedes' principle to determination of the ap- parent volume of leather, 6429. behavior of elastomers at cryogenic temperatures,

4980. Bernstein polynomials and interpolation theory to linear array synthesis, 5924. computers in design and control of systems, M267, Paper 4, p. 81. construction, class of modular functions, 3166. cooled IR detector in an optical system, 6605. cryogenic magnet, pulsed refrigeration system,

6558. cylinder functions of large argument, error bounds

for asymptotic expansions, 6049.

diffractions by convex surfaces to irregular terrain

• situations, J 68D2-338, 239 (1964).

distillation techniques to radiochemical separations,

4495. ellipsometry, study of adsorption from solution, M256, p. 281. ellipsometry, study of phenomena on surfaces pre- pared in ultra-high vacuum, M256, p. 245. experimental design to the study of a test method, comments, 5243. gas-lubricated bearings to miniature helium expansion turbine, 4981. general formulation of nonlinear response, 11., large

longitudinal retarded elastic deformation of rubberlike network polymers, 5442. generalized variational principles for electromagnetic vibrations, to the theory of waveguide

junctions, 5376. H=0, HC20, CEUCl, and their deuterated molecules, method of adjusting force constants, 6864.

high-intensity, multi-slit Raleigh interferometer, sedimentation studies, 6604. high-temperature, microbalance techniques, 5483. information theory to the analysis of contingency

tables, with a table of 2n In n, n=l(l) 10,000, J 66B4-87, 217 (1962). inverse Z-transform theory to synthesis of linear antenna arrays, 5909. method of polarized orbitals to scattering of elec- trons from hydrogen, 3977. multiple beam interference to the measurement of long end standards, 3433. new resonances, unitary symmetry selection, 5896. NMR in determination of the structure of cyclonols.

I. The structure of cyclohexane-l,3-diols, 4982. norms of external radiation, problems, 5595. paraelectrics to dielectric susceptibility; classical diagram technique for calculating thermostatic

properties of solids, 6635. peek-a-boo principle to information retrieval, 4479. planetary measurements to plantary radius and ro- tation rate determinations, J 69D12-616, 1632

(1965).

potential, to library mechanization of the current

status of graphic storage techniques, 6438. precise heat-capacity data to the analysis of the temperature intervals of the NBS-1955 and the

International Practical Temperature Scales in the region of 90°K, J 69A1-321, 5 (1965).

pulse compression techniques to ionspheric sounding, note, J 69D8-550, 1191 (1965). quaternions, representations of a binary quadratic form as a sum of four squares, 2027A.

radioassay, Ce114

, radioisotope dilution, 8977. reflectometer techniques to accurate reflection measurements in coaxial systems, 4496.

relaxation, Liouville representation of quantum mechanics, 6179. resistance themometer to calorimetry, 4498. stroboscopic method to a nonlinear equation of monautonomous character, 4497. TAPPI standard T 414 m-49 for internal tearing

resistance of paper, discussion of lambda vari- ence, 5923. theory of absorbing Markov chains to the statistical thermodynamics of polymer chains in a

lattice, 5925. thermal contact, at low temperature, gamma-ray

distribution from oriented cerium-141, 5757. Whittaker functions, asymptotic solutions of sec- ond-order differential equations having an ir- regular singularity of rank one, 8910. Williams-Landel-Ferry equation to silicate glasses, 3139. Applications, fatigue of bolts and bolted joints in aircraft, problem, TN136.

first Born approximation, TN185.

Fourier integral in physical science, 1267A.

generating funcional of the molecular distribution functions, 4295. graphs and Boolean matrices, computer programming, 3434. Hardy's formula in Brownian motion, 4294. medical, 6205. molecular refractivity in radio meteorolgy, 3140. monthly median refractivity gradient in tropospheric propagation, 1491A.

patent, manual and machine-assisted methods, pat- terns of thinking in searching, 8934. semiconductor surface-state charge-storage device, 5203.

statistics in post office automation, 3978. vacuum distillation of metals, radiochemical separation, 5665. wave front shearing interferometer, J 69C4-204, 245 (1965). Applied Chemistry, International Union of Pure and,

role, 5792. Technology, Institute for, 6452. Appraisal, Land's work on two-primary color projections, 3435. Approach, classification of electromagnetic surface waves, 5191. empirical time series analysis, J 68D9-394, 937

(1964). improve re-entry, communications by suitable orientations of antenna and static magnetic

field, J 69D6-517, 851 (1965). new theory of fluctuations in a plasma, 6883. simple exponential decay in vibrational relaxation, 6606. thermal emittance standards, 5192. Approximate cross-sections for inelastic collisions of

electrons with atoms: I. Allowed transitions, 3436. formulas concerning the reflection of electromagnetic waves from a stratified semi-infinite medium, J 68D11-422, 1215 (1964).

full wave solution for low frequency electromagnetic waves in an unbounded magneto-ionic medium, J 66D1-178, 107 (1962). method for computing diffraction patterns caused by ionospheric irregularities, J 68D6-371, 737

(1946). method for rapid Loran computation, 954A.

wide-range equation of state for hydrogen, 3979. 485
Approximating symmetric relations by equivalence re- lations, 5926. Approximation, CH4 and NH, +, Hartree-Fock, 5379. determinants and conditioned inertia indicies, 3896.

first Born, applications, TN185.

helium, Hartree-Fock, first-order perturbation cor- rections, 5360. nature of crystal field, 5536.

optical, for functions at equally spaced points, J 65B2-47, 99 (1961). Approximations, Appleton-Hartree formula validity, J 65D4-136,323 (1961).

distribution of quadratic forms, 6607.

first, error bounds for in turning-point problems,

5340. moments of the sample median, 4499. pair correlation function for a hard sphere fluid, 5927. Tchebycheff, by exponentials, 4970. Tchebycheff, sequence transformations based on, J

64B4-38, 277 (1960). APS Division of Electron Physics—the first 20 years,

5928. Aqueous ammonia, precipitation of elements to their

clear solution, on addition, 3719. cesium chloride solution and hydrogen chloride, nature of compound obtained, 5776. formamide solutions, 4990A.

inorganic solutions, deuterium isotope effect on

glass transformation temperatures, 5289. mannitol, 5%, standard potential of the Ag-AgCl

electrode in, 6392. methanol (33.4 wt.%), with and without added sodium chloride at 25 deg, standard potential of the silver-silver chloride electrode and activity coefficients of hydrochloric acid, 5689. suspensions, surface composition of hydroxylapatite

derived from solutions behavior, 6485. uni-univalent electrolytes, thermal properties, NSRDS-NBS2.

Aqueous solution, equipment for single crystal growth, J 67C1-116, 25 (1963). osmotic and activity coefficients of tetraethylam- monium iodide, at 25 deg, 5551. related isotope effects from 0 to 50 deg, dissociation of acetic acid-d3 , 6705. twenty five degrees C, J 68A2-264, 159 (1964);

8929. Aqueous solutions, additivity rule for vapor pressure

lowering, J 69A4-356, 365 (1965).

at 23°, diffusion coefficient of dodecyltrimethyl- ammonium chloride, 3180. glow discharge spectra of copper and induim, 3222. hydriodic acid from electromotive force measure- ments of hydrogen-silver iodide cells, thermodynamics, 6504. invert sugar, refractive indices and densities of, Mono.64.

Ar, He, Kr, Ne, Xe, and Hg, elastic resonances in elec- tron scattering, 6721. Ar+ -Ar collisions at 50 keV, interpretation, 6812. Aragonite, calcite, and vaterite type structures in the

borates, carbonates, and nitrates, infrared

studies, J 65A3-100, 173 (1961). Arbitrary initial states, generalized master equation,

6774. magnetic induction, radio wave reflections at a con- tinuously stratified plasma with collisions proportional to energy, 5623. rank, error bounds for asymptotic solutions of sec- ond-order differential equations having irregular singularity, 6741. Arc, auroral, height of maximum luminosity, 3836. auroral method for determination of the height and

geographical position from one observing station, 5140.

carbon, and asphalt oxidation, relationship between

intensity, 6474. copper, ionization in plasma, J 66A2-148, 169

(1962). copper, temperature, J 66A1-136, 5 (1962). electron density measurements in magnetically

confined, 6728.

gas-stabilized, study, as emission source for meas- urement of oscillator strengths. Determination

of some relative gr/-values for Fe I, J 67A6-240,

561 (1963). measurement of some argon transition probabilities, J 69A6-370, 495 (1965). plasma, shifts and widths of some Stark broadened oxygen lines, 5656. simple, device for spectral excitation in controlled atmospheres, 9007.

source, high-temperature gas studies, 3980.

source, low-pressure, for emission spectrum of the FeO molecule, 5136. source, stable high ultraviolet radiance, 6563.

spectra, residual, seventy elements diluted in copper, 3752.

spectra, seventy elements, 4274. spectroscopic measurements using analog computer, N+

« oscillator strength, 6231. spectroscopy, side-on, use of analog computer, 6488. spectrum of iron (Fei), faint lines, J 65A1-80, 1 (1961). Archimedes' principle, application to determination of the apparent volume of leather, 6429. Architecture, research, 8994. Archival microfilm, summary of current research, TN

261. records current research on preservation, silver- gelatin type microfilm in roll form. J 69A5-359, 385 (1965). Arcs, auroral, mid-latitudes, stable 6300 A, 5687. carbon, and xenon as radiation sources for labora- tory weathering of asphalts, comparison, 6645. monochromatic 6300, recent studies, 3744A.

red, distribution of latitude, 5302. Arctic E-region, some magnetoionic phenomena, 3774. E and F regions, magnetoionic phenomena per- mitting observation of valley minima, 3845. propagation, VLF waves, diurnal changes and

transmission time, J 68D2-333, 205 (1964).

zone, VLF signals propagated through, precise phase and amplitude measurements, J 68D3-

342, 275 (1964). Are life testing procedures robust ? 3437. our neighbors from abroad aware of standards and what standards can do for them? 6608. Area, absorbent material, dependence of absorption coefficients, 5531.

effective, guarded electrode, 5748. guarded electrodes for accurate dielectric measure- ments on solid-disk specimens, precise determination, 6304. Areas, protected, mechanical design, 4756. Arecibo observations, Mars and Jupiter, J 69D12-613, 1628 (1965). Mercury and Venus, J 69D12-612, 1627 (1965). Argon, TN333.

air, carbon dioxide, carbon monoxide, hydrogen, ni- trogen, oxygen, and steam, tables of thermo- dynamic and transport properties, 3806. carbon-dioxide, and hydrogen chloride, broadening

of the lines of HCN, 5216.

crystal growth and thermal etching, 6670.

crystalline, and nitrogen and liquid, vacuum ultraviolet absorption spectra of oxygen, 6523.

crystals, growing, 4922. deposition on a 4.2°K surface, 3141. K fluorescence yield, by proportional-counter spec- trometry, TN91 (PB161592).

matrices, 5407.

4Hf,
matrices, solid, infrared absorption spectra of car- bon suboxide and malonomtrile, 5407. matrix spectrum of CF? trapped, 4468.

mobilities of positive ions, 4777. nitrogen, and an argon-methane mixture, absolute measurement of W for polonium-210 alpha

particles, 6577. nitrogen on mineralogical graphite and diamond at 77 and 90° K, adsorption, 3962. oxygen, and nitrogen, 6528. resonance lines 1067 and 1048A, photolysis of ethane, 8940A.

silicon, TN276.

thermophvsical properties of, from 0 to 300 °K, bibliography, TN217.

transition probabilities, arc measurement, J 69A6-

370, 495 (1965). Argon, solid, at 4°K and 20°K, carbon vapor, 4469.

optical absorption spectrum of carbon, 4815. xenon, kryton in the vacuum ultraviolet, absorption

spectra, 3416A. vapor snakes, 5842. Argon-methane mixture, argon, and nitrogen, absolute measurement of W for polonium-210 alpha particles, 6577. Argument, error bounds for asymptotic expansions with an application to cylinder functions of large, 6049. Arithmetic mean, weighted, 4901A. minima, cofactors of quadratic forms, bounds, 5215. Aromatic compounds, extinction coefficients of triplet <—= triplet transitions, 6753. reactions of methyl radicals, 5788; 5789. Aromatic fluorocarbons, preparation and properties of, 4242. thermal stability and synthesis, 3438. Aromatic hydrocarbons, electron impact studies, II. Naphthacene, naphthaphene, chrysene, tri- phenylene, and pyrene, 6027. electron impact studies, III. Anzulene and aphthalene, 6028. photochemical changes in thin-layer chromatograms

of polycyclic, 6285.

polycyclic, oxidation; review of literature, Mono.87. Aromatization of inositol derivatives, J 68A3-275, 287

(1964). ARQ with Bose-Chaudhuri-Hocquenghem coding sys- tems, comparison of the 3-out-of-7, 5249, 5251. Array, dipole, large 50 Mc/s, at Jicamarca radio observatory, 5768.

factors, use of transforms to sum, 6643. operations, H101.

synthesis, linear, application of Bernstein poly- nomials and interpolation theory, 5924. Arrays, antenna, and passive networks, analogies be- tween thories, 6599.

electronic scanning, J 68D4-359, 441 (1964).

linear antenna, application of inverse Z-transform

theory to synthesis, 5909. nonuniformly spaced, method of synthesizing, 6603. Arrestment error in one-pan two-knife balance systems,

minimization, J 67C3-133, 227 (1963). Arsenic trioxide glass, condensation coefficient, 3983. Arsenide, indium, and indium antimonide, magnetoresistive effects, 3622. Arterial pulse waves, improved transducer for external

recording, 5401.

street, what is needed next in simulation, 6535.

Artificial dentures, dimensional changes occurring,

3184. geomagnetic and ionospheric storms associated with

high-altitude explosions, 3270. heating of the electrons in the F-region of the

ionosphere, 5204.

satellite, intermediary equatorial orbits, J 66B1-68,

5 (1962).

satellite, zonal harmonic perturbations of an accurate orbit, J 67B4-103, 191 (1963).

teeth, 3439.

Artifically produced electron clouds observed with spaced

ionosondes, lifetime and movement, 5769. As2o3 in the glass transformation, volume relaxation, 9133. Ash, color removal by bone char, some mechanisms,

3305.

fuel, contaminants, corrosion of type 310 stainless

steel, 3168. Aspect, interference at high field strengths, implication,

5912. Aspects of conductive flooring and Epoxy floor toppings,

3303. coordination chemistry of boron, 6371.

fluorine flame spectroscopy, 3768. germanium dissolution, some electrochemical, 9016, 9017. mechanical properties of high polymers, 5666. NBS instrumentation literature reference file, 5929. non-equilibrium thermodynamics in the presence of a radiation field, 9015. radio meteorology, 5205.

terrestrial ELF noise spectrum when near the source or its antipode, J 69D7-532, 977 (1965).

theoretical and practical, asphalts weathering, 9137.

theoretical, polymer crystallization with chain folds: bulk polymers, 6493. Asphalt flux, oxides of nitrogen, oxidation, 8931.

flux, ozonation, 6280. oxidation and carbon arc, relationship between in- tensity, 6474. oxidation, effect of carbon-arc intensity, 6440. presence of ozone, oxidation, 6277. shingle roofing, wind resistance, 4411. shingles and roofing maintenance, 3142. Asphaltenes in nitromethane, velocity-depth relationship

in microelectrophoresis, 5845.

mobility, in nitromethane, electrophoretic, 5749. Asphalts, air-blown, 4995. air-blown, oxidation rates, by infrared spectro- scopy, 4575.

characteristics of fifteen coating-grade, J 64C4-49, 299 (1960). comparison of xenon and carbon arcs as radiation sources for laboratory weathering, 6645.

effect of blowing variables on durability of coating- grade, 6006. infrared spectra of, some aspects of changes caused by photooxidation, J 68C2, 157, 115 (1964). photooxidation in the presence of ozone, J 68C4-176, 297 (1964). presence of ozone, photooxidation, 6288.

roofing, durability, 4664.

theoretical and practical aspects, weathering, 9137. Assay, M260-8.

precise, copper using small samples, 8951. Assessment, suitability of Drude-Tronstad polarized

light method for the study of film growth on

polycrystalline metals, M256, p. 157. Assign descriptors to documents, training a computer, experiments in automatic indexing and experi- ments in information correlation, 6509. Assigning quantitative values to qualitative factors in the Naval Electronics Problem, 3142A. Assignment, tenfold, Baryon resonances, verification, 5846.

vibrational, sulfuryl fluoride, 9102. Associated active dark filaments and their relation to 2800-Mc/s radio bursts, solar flares, 6368. information and chemical structures, digital handling, 6693.

ions in polyelectrolytes and trapped Brownian trajectories, 6244. 487
Association, Computing Machines, index to Journal,

5403.

files, M269, p. 167. isomeric chlorobenzoic and toluic acids with 1,3- diphenylguandine in benzene, thermodynamic

constants, J 65A3-103, 209 (1961). model, information retrieval, M269, p. 149. plane-wave electron-density irregularities with the

equatorial electrojet, 5733. system and information-recording, M269, p. 181. Associative indexing, M269, p. 201. Assumption, basis of functional, theory of the Boltz- man equation, 5736. Assumptions, two, theory of attractive forces between

long saturated chains, 5832. underlying the analysis of variance, 851A.

Astronomical, interplanetaxy, and geophysical, light of night sky, 6457. Astronomy, observations, radio, with 8.4 104 m2 50 Mc/s

antenna of the Jicamarca radar in Peru, 8972. radar, statistical methods; determination of surface roughness, 67D6-305, 763 (1963).

radar, use of statistics, remarks, J 68D7-382, 849

(1964).

satellite, theory of accurate intermediary orbit, J 65B3-56, 169 (1961). URSI, report of U.S. Commission 5, J 64D6-96, 655

(1960). Astronomy, radio, 5618. bibliography on atmospheric aspects, TN171.

protection of frequencies, J 67D2-247, 99 (1963). Astrophysical laboratories, development, and microscopic-astrophysics, 6207. plasma physics research at NBS. Highlights for 1961,TN116 (PB161617).

Astrophysics, geophysics, and masers, papers on the symposium on collision phenomena, TN124

(PB161625).

effects on industry in Colorado, present and future, 6470. Joint Institute Laboratory, of the NBS and the University of Colorado, Boulder, Colorado, Observatory report, 6241. laboratory, 4725. microscopic, and the development of astrophysical

laboratories, 6207. plasma-phvsics, measurements and standards, TN59

(PB161560). Asymmetric ethanic rotators: 1, 2-disubstituted pro- panes, 6223.

profiles, note concerning the reflection of waves in inhomogenous layers, J 69D5-505, 701 (1965).

rotor, structure of vibrational-rotational bands,

4379.

rotors, line strengths, Microwave spectral tables, Mono.70, Vol. II. Asymptotic behavior, current on an infinite cylindrical antenna, 67D4-277, 417 (1963). expansion, multi-variate normal distribution and

Mill's ratio, J 68B1-109, 3 (1964). expansions, application to cylinder functions of large argument, error bounds, 6049. expansions, special functions in complex plane, error bounds, 6740. expansions, turning-point problem, error bounds,

6048.

joint normality of quantiles irom a multivariate

distribution, J 68B2-118, 65 (1964). lower bounds, fundamental frequency of convex membranes, 1267B.

solutions, linear differential equations, 1430A.

solutions, second-order differential equations having an irregular singularity of arbitrary rank,

error bounds, 6741.

solutions, second-order differential equations having an irregular singularity of rank one, with an

application to Whittaker functions, 8910.

Athabasca Glacier, Alberta, Canada, electrical resistivity studies, J 64D5-79, 439 (1960). Atlantic area, North, radio propagation quality, 1953-

1960, 5620. Atlas, Fourier coefficient of diurnal variation of foF2, TN142 (PB161543); Part II, TN305.

oblique-incidence ionograms (a digest), J 65D1-100,

35 (1961).

solar flare effects in the ionosphere observed with

a high-frequency Doppler technique, September 1960-December 1962, TN326.

solar flare effects observed on long VLF paths dur- ing 1961, TN210.

spectrophotometric, spectrum of CH from 3000 A

to 5000 A, Mono.24. VLF emission spectra observed with the "Hiss rec- order", TN226.

whistlers and VLF emissions. A survey of VLF

spectra from Boulder, Colorado, TN166

(PB181454). Atmosphere, brightness temperature, using a bi-exponential model in the 6-45 GHz frequency range,

5935. chamber, controlled, J 67A3-215, 269 (1963).

controlled, and cryo-surface, heat transfer between,

4676.

controlled, wire exploder for generating cylindrical shock waves, TN148 (PB161649).

dark, ionized molecular nitrogen omission and the oxygen green line, 3126. errors induced in microwave range measurements,

J 68D11-426, 1229 (1964). exponential, propagation over plane earth, J 68D11-

420, 1193 (1964). fatigue of metals, effect of reactions, 6009A. formula for radio ray refraction in an exponential, J 65D2-117, 181 (1961). graphical determination of radio ray bending in an

exponential, J 65D2-116, 175 (1961). helium, effect on the Beckman infrared spectro- photometer, 857A.

high, from F-region measurements, implication of

diurnal, seasonal and geographical variations

in composition, 6255.

ionized, effect on radar return, electroacoustic waves

excited by a space vehicle, J 69D2-459, 235, (1965). ionizing radiation and constitution, 6159. ionosphere in the E and Fl regions, 4426, 5144. lower, both synoptic and climatic scales, Mono.92.

lower, divergence on local electron density in the ionosphere, 3389. lower, radio thermal noise properties, 5785. Mars, evidence for oxides of nitrogen, 3538. non-equilibrium, source function, 3308; 3868; 3869.

one, some physical properties of monochloro-dichloro, and monobromoacetic acids, 4300. 100-kilometer level, diurnal and seasonal variations, 5999.

outer-solar, thermodynamic structure. Effect of de- partures from the Saha equation on infrared properties of the low chromosphere, 3887. photoionization heating in F region, 4224.

solar, outer, use of equation of hydrostatic equili- brium in determining temperature distribution, 3899.

solar radiation, infrared transmission, 5410. strange sounds in, 4941, 4942.

sunlit, molecular nitrogen emission, 3127. thermal balance in F region, TN162.

turbulent, signal degeneration in laser beams pro- pagated, J 69D4-498, 629 (1965). upper, 4398. upper, and satellites, 4284. upper, structure and physics, 6482. upper, variations of [OI] 5577 A emission, 4406. (88
vertical structure, derived from daily radiosonde

observations, propagation of radio waves with

frequency 99.9 Mhz as a function, J 68D2-340, 257 (1964). width of the microwave lines of oxygen and their relationship to the thermal noise emission, spectrum, 9139. Atmospheres, simple arc device for spectral excitation

in controlled, 9007.

stellar, aerodynamic phenomena, 4252a. temperature inversion, question regarding, 5158. thermodynamic properties of helium from 3 to 300° K between 0.5 and 100, TN154. thermodynamic properties of neon from 25 to 300° K between 0.1 and 200, 9113.

340, thermodynamic and related properties of para- hydrogen from the triple point to 100° K at pressures of, NBS Mono.94. 350, freezing liquid parahydrogen, 5590. using corresponding states theory, 5603. Atmospheric aspects of radio astronomy, bibliography, TN171.

band absorptions from laboratory data, TN178.

bending of radio rays, methods of predicting, J 64D5-84, 487 (1960). bending of radio waves, 3440. breakdown limitations to optical master propagation, J 69D11-576, 1431 (1965).

corrosion, investigation of zinc-coated and uncoated

wire and wire products, 4396.

corrosion, microscopic examination of nickel coatings, 4366. gravity waves: a new toy for the wave theorist, J 69D3-473, 375 (1965). humidity, changes in influence during fatigue of aluminum alloy, J 68C2-155 (1964). importance, including 0+-f-N>0++N, some measured rates for oxygen and nitrogen ion-molecule reactions, 9020. index of refraction, correction of optical distance measurements for fluctuating, 6660.

infrared, transmission to solar radiation, 3659.

limitations on electronic distance-measuring equip- ment, 3441. lower, ionospheric coupling, statistical study, 3948.

noise, effect on probability of error for an NCFSK

system, 9073A.

noise, various receiving locations, properties, J

64D6-96, 640 (1960).

noise, wide dynamic range, magnetic tape recording and reproducing, 6187.

oscillations, thermal and gravitational, ionospheric dynamo effects included, 3875. phenomena, energetic electrons, and the geomagnetic field, J 66D2-180, 127 (1962). radio refraction effects with values predicted through the use of surface weather observations, comparison of observed, 5250. radio refractive index, models, 3652. radio refractive index structure over North America, 4199

research, 4500.

sciences, 4983. sodium, resonance scattering, 3753.

stellar, temperatures, effect of departures from

local thermodynamic equilibrium on inferences, 4047.

structure, thermal emissions at radio frequencies,

potential use of passive probing, 8950. subsidence, climatology of elevated super-refractive layers arising, 5949. thermal, noise, 3627.

tides and ionospheric electrodynamics, 3442. turbulence, experimental confirmation, theory of long-duration meteor-echoes, 1606A.

turbulence, line-of-sight transmissions, 5117.

variations, response of microwave refractometer,

6475.

variations, response of NBS microwave refracto- meter cavities, J 69D9-554, 1213 (1965). waveforms, theory, slow-tail portion, 3695. waveforms, VLF phase characteristics deduced,

3908. Atmospheric radio noise, amplitude-probability distri- bution, J 68D6-370, 723 (1964) ; Mono.23.

bursts in the LF band at Bangalore, J 69D10-569,

1351 (1965). one bandwidth to another, conversion of the amplitude-probability distribution function, J 66D6-

231, 713 (1962).

predictions, reliability, J 65D6-160, 565 (1961). Atmospheric refraction, centimeter wavelengths by ra- diometric means, empirical determination of

total, J 67D2-251, 153 (1963). errors of baseline-type radio tracking systems and

methods of their correction, systematic, 6418.

errors, radio height finding, correction, J 67D2-

250, 139 (1963).

total, use of surface refractivity in empirical prediction, J 67D1-240, 31 (1963). Atmospherics, daytime attenuation rates in the very low frequency band, J 64D4-68, 349 (1960). VLF attenuation for East-West and West-East

daytime propagation, 3907. Atom-atom collisions, impact parameter formulation of the theory, TN185.

electron-hydrogen, elastic scattering, variational treatment, 3904. energy operations in the United States, influence of lowered permissible dose levels, 3838. formaldehyde, hydrogen, reaction, isotope effect, 3597.

gas, with a cold surface, collision, 3472. helium, lower bounds for eigenvalues with application, 3242. hydrogen, addition to olefins: relative rates at the two carbon positions and derived heats of for- mation of several alkyl radicals, 6785. hydrogen, addition to propylene, activation energy,

4344. hydrogen, addition to solid four-carbon olefins, 5392.

ion, collisions, Lyman alpha radiation, 4861.

lithium, calculations of the hyperfine splitting, 5220. oxygen metastable, production through photode- tachment, 8932. time and, 8906. Atomic absorption spectrum, praseodymium (Pr 1), J

69A1-329, 59 (1965). bromine (Br 1) spectrum, neutral atomic, analysis, J 67A6-238, 505 (1963). carbon negative ion, 4947.

clocks, space experiments, 3444.

clocks, sun-time replaced, 4327. complex, spectra, repulsion of energy levels, 4278.

definition, unit of time, some considerations, 6374.

detail, condensation of tungsten on tungsten: Monte Carlo and statistical calculations vs. experiment, 6650.

detail, condensation of tungsten on tungsten: ob- servation with the field ion microscope, 6651. electron affinities, 3143.

excitation, coulomb scattering without, 50-, 100-, 200-, and 400-keV electrons, 5270.

flame, 4445; 4520. flame reactions involving N atoms, H atoms and

ozone, 5206.

flames, color phenomena, J 67A4-228, 379 (1963).

flare, H + O.i, hydroxyl radical emission in the 1-3 micron region produced, 3464.

fluorine, microwave Zeeman spectrum, 4361. hydrogen, ionization of electron impact, 5328. 489
hydrogen, scattering of electrons, 3122.

iodine, electron affinity, 4624.

iodine (In), singly ionized, spectrum, J 64A5-68,

(1960).

ions, negative, 3264.

lifetimes in neon I, 6609. molecular, data, TN289.

molecular processes, 4832. molecular properties, NSRDS-NBS3, Sec. 1. nitrogen, metastable, in helium-nitrogen after- glows, ESR measurement, 6742. nuclear excitation, electron scattering without,

6030. number dye systems, low, for ionizing radiation measurement, 6837. number elements, total photonuclear cross sections for low, 9117. reactions by absorption spectroscopy, 3769. scattering factors, experimental, magnesium oxide, 6749. scattering factors, lithium and beryllium isoelec- tronic sequences from accurate analytic Hartree-Fock wave functions, 5207. singly ionized bromine (Br n), energy levels and

magnetic dipole transitions in the 4p* ground

configuration, 4067.

steps, successive, correlation, in crystals by relaxation mode analysis, J 69A4-350, 301 (1965).

subshells, outer, photoionization, 4834. systems, ionization by fast protons, TN185.

tests, effect on radio noise, 3192.

time, cesium beam, and frequency standards, 6626. time scales, comparison of two independent, 5131. time scales, synchronization of two remote, 5719.

transition probabilities, bibliography, Mono.50; M278.

transition probabilities. Hydrogen through neon, NSRDS-NBS4, Vol. I. transition probabilities, present status of our

knowledge, 5588. Atomic-beam-emitted Hg198 and Kr86 wavelengths, 4141. Atomic beam, devices, correction for systematic wavelength shifts, 3485.

flight, 5088. frequency standards, 3375; 3343: 3981.

light source, sealed-off Hg188

, 3757. machines, some causes in resonant frequency shifts,

I., Shifts due to other frequencies of excitation, 5667; II. Effect of slow frequency modulation

on the Ramsey line shape, 5668. mercury, for metrology, 3636A. wavelength of Hg108 Zeeman filter relative to that

of the 2537-A absorption line, 5857. Atomic energy levels, 5094. autoionizing, He, Ne and A, new, 5502.

crystals, Mono.19.

multiplet tables Si II, Si in, Si iv, NSRDSNBS3, Sect. 1. spectra of neutral and singly ionized phosphorus,

3144. Atomic frequency standards, clocks, 3445. comparison, 6453. international comparison, via VLF radio signals, J 69D7-524, 905 (1965) ; 6810. microwave spectroscopy, 3645. NBS, 4189; 4501. time interval standards, J 68D5-360, 523 (1964). Atomic oxygen, acetylene flames, effect of molecular oxygen on emission spectra, 4050. chemiluminescent reactions of nitric oxide, 4196.

electric fields in ionosphere and excitation of red

lines, 5317. microwave Zeeman spectrum, 3261. negative ion, photodetachment cross section, 3710. reactions of carbon monoxide, 811A. Atomic spectra, 5093; 6274. connection between the theories of collisions, 5530.

present state, 5033. rare earths, presence in the sun, 5734.

selected tables. Atomic energy levels and multiplet

tables. Atomic energy levels and multiplet

tables Si n, Si in, Si iv, NSRDS-NBS3, Sec. 1. Wn, J 68A2-270, 207 (1964). Atomic spectroscopy, review of reviews, 5648. transition probabilities, oscillator strengths, beryil- lium, boron, carbon, fluorine, helium, hydrogen,

lithium, neon, nitrogen, oxygen, NSRDS-NBS4,

Vol. I. Atomic weight, chlorine, 4461. copper, natural variation of copper isotopes, 6880. determination and absolute isotopic abundance ratio of bromine, J 68A6-306, 593 (1964). determination, copper, absolute isotopic abundance, J 68A6-305, 589 (1964). reference sample of chromium, absolute isotopic abundance and ratios, J 70A3-395, 193 (1966).

silver, absolute isotopic abundance ratio, 3412.

silver, absolute mass spectrometric determination,

3413. Atomic weights, 3145.

nuclidic masses, new scale, 4789. Atomistic approach, rheology of sand-water and clay- water mixtures, 3446. Atoms, bromine and chlorine on Pyrex, mass spectro- metric study of recombination, 5460.

CI, with CO, matrix-isolation study of reaction. 6851. deuterium and hydrogen, reaction of deuterated

polystyrenes, 6335. F, CO, matrix-isolation study of reaction, 6852. free radicals by y irradiations at 4.2°K, 3146.

gas, calculated in central potential model, 4367. helium, comments on Rosen interaction of two,

5245. highly ionized, configurations s"p

n (n—1, 2, 4, 5)

,

5389.

inelastic collisions of electrons, 3436.

inert gas, empirical intermolecular potential, 3529.

ions, empirical relations for energy levels, 6736. linear chain, TN328.

manganese, magnesium in solid rare gas matrices, absorption spectra, 3811A; 4343. molecule calculations, Gaussian orbitals, 4400. molecules, photoionization, TN131 (PB161632).

oxygen, 02 , NO, N02 , mass spectrometric study of the isotopic exchange rate, 6192. oxygen, reaction with condensed olefins, 6278, 6279. slow electrons by hydrogen, measurement of the

cross section for elastic scattering, 5467. small free radicals at low temperatures, 4662. Atoms, hydrogen, alkyl radicals, low temperatures, dis- portionation-combination reactions, 5996. —195°, double bond isomerization of olefins, 3334. reaction with solid oxygen at 20°K, 3291. reaction with solid propene at low temperatures,

3858. Atoms, nitrogen, organic molecules, 4219. rate of reaction, with ethylene, 3741. reaction with ethylene, mass spectrometric study,

6844.

studies, evaporation of condensates containing,

3321. Attainment of ultrastability, III. Gage blocks of su- perior stability, 6097. Attempts to eliminate fatigue damage by heat treat- ment, 4502. Attenuation, coefficients for propagation at very low

frequenciees (VLF) during a sudden iono- spheric disturbance (SID), J 65D6-158, 543

(1961). constants, short sections of waveguide and the

losses in waveguide joints, two-channel nulling method for measuring, 6573.
function for propagation over a flat layered ground,

note, 5682. gamma ray, 4668. ground wave of a low frequency electromagnetic

pulse, TN310.

hydromagnetic waves in the ionosphere, J 69D3-471,

361 (1965). impendance, phase shift, standards and measurement, 6396.

intrinsic, 5425 measurement, further analysis, modulated subcarrier technique, 6094. measurement system, unmodulated twin channel microwave, 5195, 6598. measurements, micro-wave frequencies, effects of connectors and adapters on accurate, 6011. measurements, standards, development, J 64D6-96,

599 (1960). measuring systems, method for self-calibration, J

66C1-82, 13 (1962).

radio waves in the troposphere, 5930.

rate, ELF radio waves, observed, J 65D5-153, 475

(1961). refraction of radio waves, tropospheric, 6515. scattered cesium-137 gamma rays, 3147. Attenuator, inline waveguide, 6138. rotary-vane, gearing errors as related to alignment

techniques, 6771. rotary-vane, waveguide, analysis of rotation errors, 5196. Attenuators, coaxial, rapid insertion device, 3290. rotary vane, TNI7. waveguide, rotary vane, 4488. Attractive forces, two assumptions in theory, between

long saturated chains, 5832. Au III, the third spectrum of gold, J 64A6-69, 481

(1965). Audio ionization, 6274. Audiofrequencies, basis for establishing ratios of currents, 3402. design and performance, multirange current trans- former standards, 9068. international comparison, current-ratio standards,

6594. Audio-frequency admittances, comparison, active and

passive direct-reading ratio sets, J 68C4-168, 227 (1964). compliances, prestressed quartz, fused silica, alumi- num, 4503; 5931. dispersion effects, lanthanide salts at low temperatures, 5208. Audiovisual application to equipment calibration, M248,

p. 195. Auditory perception, mechanistic model, limits, 5878. Aurora, absolute photometry, 3126, 3127. airglow, excitation by local electric fields, 6060.

polaris and the space around the earth, 4326. trapped electrons, 5735. Aurorae, radio properties, 4255. Auroral absorption events, South Pole, study, 5889;

6565. absorption, radio waves, contribution of nonthermal

electrons, 6434. airglow research, achievements and prospects, 1251A.

arc, height of maximum luminosity, 3836.

arc, method for determination of the height and

geographical position from one observing station, 5140.

arc, subvisible monchromatic 6300 A arc with outer- zone radiation on November 28, 1959, correlation, 3486.

arcs, mid-latitudes, stable 6300 A, 5687.

arcs, red, and ionospheric recombination, relationship, J 65D2-110, 129 (1961).

coruscations, 3950.

echoes, resemblance, radio echoes from field-aligned ionization above the magnetic equator, 3736. forms, discrete, E-region, determination of electron

density, 8913.

latitudes, high-frequency radio waves, 2374A. magnetic pulsations, ionospheric absorption, 4138. radio absorption, very low frequency emissions, re- lation between, 8919. radio wave propagation, bibliography, TN128 (PB161629). sporadic-E ionization, J 66D5-218, 581 (1962); J 67D4-272, 383 (1963).

stable, red arcs, data reduction, TN308.

Auroral zone, 4484. absorption effects, HF arctic propagation path, J

68D6-369, 717 (1964). antenna temperatures, 4299; 4920.

distribution, times of magnetic micropulsation

storms, 4915.

electron precipatation event, relationship to magnetic bay, 4480. electron precipitation observed by balloons, study

of geomagnetic effects associated, 5888. long-distance one-hop Fi propagation, 4150. magnetic micropulsations with period of 5 to 30

seconds, 4504. observations, infrasonic pressure waves related to ionospheric disturbances and geomagnetic activity, 5209. southern, occurrence of short-duration cosmic noise absorption events inside, 5778. Auroral zones, electron precipitation, ionospheric radio absorption, 6733A.

Auroras, D-region electron density profiles, 6001. mid latitude, 4774. visual and subvisual, changes in the outer Van Allen

radiation zone, 4018. Austenitic stainless steels, 4173; 4740. Autoclave expansion, sulfate expansion, heat of hydration, BSS5, Part 2. Autocorrelation functions, momentum, energy transport, harmonic crystals containing isotopic defects, 5494. Autoionization, helium using a synchrotron light source, 5210.

probabilities, calculations, 6431. Autoionizing atomic energy levels, He, Ne and A, new,

5502.

states, krypton and xenon in \ 380-600A, 6339. Automated citation indexing, M269, p. 189. Automatic antenna data processing, bibliography, J 64D6-96, 743 (1960). character recognition, state-of-the-art report, TN112

(PB161613).

chloride titrator, analysis, some ionic constituents, 4346.

classification, M269, p. 157. data processing methods, instrument recall and re- cycling analysis, M248, p. 217. data processing technology, trends, 3892.

direction finding, design for spinning goniometer,

J 65D3-125, 237 (1961). document content analysis, retrieval, M269, p. 47. fringe counting interferometer for use in the cali- bration of line scales, J 65C2-64, 129 (1961). gas chromatography purification, J 66A3-160, 255

(1962). graphics interface to a computer, MAGIC, machine,

6840. method, obtaining data, Weissfloch-Feenberg nodeshift technique, 6591. multichannel correlator, J 67C1-117, 33 (1963).

optical design, 5932. precise recording, temperature, J 64C4-45, 271

(1960). 491
screening of normal and abnormal electrocardio- grams by means of a digital electronic computer, 3982. transformation, observed plasma intensities into their radial distribution, data processing sys- tem, 5982. Automatic indexing, M269.

classification, M269, p. 211. experiments in information correlation; training a computer to assign descriptors to documents,

6509.

state-of-the-art report, Mono.91.

using cited titles, M269, p. 213. Automation, post office, applications of statistics, 3978. Automorphic form, bounded, dimension zero is constant,

6540. Automorphs of a skew-symmetric matrix, theorem, 6571. Automotive lifts, CS142-65.

Auxiliary, ADI, publications program, 5903A.

Available heat sinks for protected underground installations, 3148; 3984. Availability of machine-usable natural language material, 3983. Average, atmospheric radio refractive index structure over North America, 4199. decay laws of VLF fields, 4505. power dissipated in a diode swept along its reverse

characteristic, TN240.

Averages, method, 4901A. Avoiding errors, stray radiation, measuring spectral emittance of diffusely reflecting specimens,

6610. Axial symmetry, microsize magnetic field probes, 4766. Axially symmetric bodies, class, Stokes flow problem,

3872. Axiomatic language, string transformations; axle, 6611. Axle; axiomatic language for string transformations,

6611. Azide, cyanogen, matrix-isolation study, photolysis, 6850.

ion, nitrogen NMR chemical shifts, 5506. Azides, decomposition, nature ultraviolet light, 3686. Azo, compounds, 5032. dyes, photoisomerization, aqueous solution, 3346. Azoalkanes, quenching triplet state, acetone and biacetyl, 8967. Azomethane, complicating factors, gas phase photolysis, 5253. mass, spectrometric study of the production of methylamine from, 6194. B BaO'2B2 03 , crystal structure of barium tetraborate, 9065. B2O3 and B2O2, gaseous, infrared emission spectra, 3579. Ba+ and Cs+ from rhenium, kinetics of desorption II, 5435. Background, historical, of image formation, 6784.

objectives of the U. S. Standard for the colors of

signal lights, 3149. Backscattering, conductor in a semi-infinite dissipative medium, a dipole approximation, J 67D4-278, 433 (1963).

5.3 meV alpha particles from platinum and monel

metal, experimental study, 6592. Back-up ring for 0

3M-rings, disclosure, TN287.

Bacteriophages, mechanism of inactivation by metals,

6203.

"Baffled piston" problem, J 65B1-40, 1 (1961) ; J 65B3-

57, 203 (1961). Balance, direct-reading two-knife 50 pound, of high

precision suitable for state weights and measures laboratories, J 68C3-159, 141 (1964). pans, Gimbal device to minimize the effects of off- center loading, J 64C4-46, 277 (1960). 492

systems, one-pan two-knife, minimization of the arrestment error, J 67C3-133, 227 (1963). Balanced amplifier, TN331.

Balances, microchemical, response of to changes in rel- ative humidity, J 64C4-47, 281 (1960). response to thermal gradients, J 68C3-158, 135

(1964).

Bali, infrasonic observations of the May 16, 1964 vol- canic explosion, 6803. Ball-and-socket joints and cylinder joints, vacuum

tight, 5839. Ball bearing separator materials operating submerged

in liquid nitrogen, evaluation, 3536. Ball bearings, cryogenic temperatures, 4610.

five different separator materials at 9200 RPM in liquid nitrogen, testing, 4342.

five different separator materials at 9300 RPM in liquid nitrogen, 4977. Ball pens and inks, composition, properties and be- havior, 1291A.

Ballistic impact conditions, characterization of textile yarns, 3995. Balloons, a study of geomagnetic effects associated with

auroral zone electron precipitation, 5888. Balmer, and Paschen continua in a quiet prominence,

4204. decrements: diffuse nebulae, 3*47.

line H7, Stark broadening, 4083.

lines, Stark broadened, hydrogen, profiles, 5597. Banach's contraction theorem, some extensions, J 69B3-

151, 179 (1965). Band, carbon monoxide broadened by nitrogen and

hydrogen, linewidths in the 2-0, 6178. edge in Cds, optical quenching of photo-conductivity, 8926.

nine, long-term characteristics for air-ground

propagation, 5451.

origins, fundamental and satellite, determination

from. Spin-orbit coupling constant of nitric oxide, 6387. spectrum analysis of mercury hyride, 4506. UHF, a low input VSWR coaxial diode switch,

5875. Bands, CN "tail," a spectral study of active nitrogen

flames exhibiting, 6384. deuterium cyanide and hydrogen cyanide, vibration-rotation, G529.

electronic energy, in SrTi03 and related oxide semi- conductors, 6033. strontium titanate, electronic energy, 6032. VLF to HF, noise in, predictions of communication

reliability, 5507. Bandwidth, TN331.

carrier power, to achieve a given performance for multichannel radio communication systems, re- quired signal-to-noise ratios, 5641. fading correlation, and short-term frequency stability measurements on a high-frequency trans- auroral path, TN165.

required signal-to-noise ratios, and RF signal power, multichannel radio communications

systems, TN100.

variable, double-tuned transformer, TN237, p. 5. Bar, meter, with helium-neon laser, accurate length measurement, 5902. rectangular semiconductor, for use with four-point probe measurements, potential distribution, 6301. Barium, bismuth titanates, 4963.

borosilicate, vitreous, radial distribution study, J

67A1-193, 37 (1963).

film hygrometer element, 3372. oxide-niobium pentoxide, phase equilibrium rela- tions in the binary system, J 65A4-115, 337

(1961).

tetraborate, BaO2B; 03 , crystal structure, 9065.

titanate, electrophoretic deposits, 4630.
Barium fluoride film hygrometer element on radiosonde

flights, 5557. lithium fluoride, calcium fluoride and sapphire,

effect of temperature on the vacuum ultraviolet transmittance, 6717. refractive properties, 6340. Barnyard, supercooling, 3802A.

Barrier and microwave spectrum to internal rotation

in methylsilylacetylene, 6869. Bars, deformed, high-yield-strength, 4137. square cross section, torsional resonance vibrations, J 65A3-99, 167 (1961). Baryon resonances, and meson in relativistic SU(6),

6861.

verification of the tenfold assignment, 5846. Base, coordination polymers, thermogravimetric study

of some new transition metal-Schiff, 9115. materials, denture, clinical evaluation of complete

dentures, 6637. materials, organic denture, some physical properties, 5676. Baseline-type radio tracking systems and methods of

their correction, systematic atmospheric re- fraction errors, 6418. Bases, acid, in analytical chemistry, 6578. acids in alcohol-water solvents, 6579.

Basic, concepts of systems engineering, M267, Paper 2, p. 11. factors in glass-resin systems, 3151. magnetic quantities and the measurement of the magnetic properties of materials, Mono.47. microwave phase shift equations, J 68D4-352, 349

(1964).

principles, liquefaction of hydrogen, 6458. research in government laboratories, 3151A.

standards for physical measurement, 3815. Basicity and acidity in organic solvents, 639A.

Basins, rectangular, energy dissipation in standing waves, 3202.

Basis, electromagnetic measurements, U. S., 6487. functional assumption in the theory of the Boltz- mann equation, 5736. measurement system, 4983A.

BaTiGeaOo, compound, 3822. BaTi03 , note on domain conversions, 5152.

light emission from the surface layer, 2610A. Batch adsorption from solution, J 66A6-186, 503 (1962).

Batteries, aircraft storage, 3419.

cells, Leclanche, impedance, 5398. dry cells, impedance of commercial Leclanche, TN190.

secondary, 5069. thermal effects of nickel-cadmium, 6019. Battery, helicopter, service simulator, TN244.

Bauschinger effect and residual microstresses in alpha

brass, J 65C4-79, 265 (1961). Bay, magnetic, 4480.

Bcc, diamond, and Fee structures, correlation factors

for impurity diffusion, 5978.

Be, Al, and Ge, observed line shapes of collective excitations, 6242. Beam, ammonia, maser as a standard of frequency,

4979. antenna, 4493. atomic time, cesium, and frequency standards,

6626. atomic, wavelength of Hg198 Zeeman filter relative

to that of the 2537-A absorption line, 5857. blowup and beam loading in electron linacs, 5211. comparison of direct and Servo methods for utiliz- ing cesium beam resonators as frequency

standards, 4416.

laser, over 9 and 90 mile paths, fluctuations, 6073. loading and beam blowup in electron linacs, 5211. loading in linear accelerators, 6612. machines, atomic, some causes in resonant fre- quency shifts, I. Shifts due to other frequencies of excitation, 5667.

machines, atomic, some causes in resonant fre- quency shifts, II. The effect of slow frequency

modulation on the Ramsey line shape, 5668. pullout specimens with high-yield-strength de- formed bars, 4137.

rotating, fatigue machines, a simple environmental chamber, 5164. specimens, aircraft, programmed maneuver-spec- trum fatigue test, 5598. Beam-type low-noise microwave tubes, J 64D6-96, 763

(1960). Beams, flexural characteristics, 3511.

steel, embedded in concrete, bond strength, 4959.

structural, analytical study of creep deflection, 3430. web reinforcement, shear strength of, containing deformed bars of different yield strength, 5654. Beamwidth, Mono.95.

Bearing, and flange puller, miniature gear, TN253,

p. 7. structure of lower F region, some results of a new

method for obtaining ionospheric N(h) profiles, 5678; 6380. theory of a stable high-speed externally pressurized gas lubricated, J 68C2-156, 101 (1964). Bearings, ball, at cryogenic temperatures, 4610.

ball, with five different separator materials at 9200 RPM in liquid nitrogen, 4977.

gas-lubricated, to a miniature helium expansion

turbine, 4981. Beckman infrared spectrophotometer, effect of helium

atmosphere, 857A.

Beetles, flour, mortality patterns in eight strains, 6874. Behavior, clinical, of o-ethoxybenzoic acid-eugenolzinc

oxide cements, 6636. coaxial cable connectors for pulses with nanosec- ond risetimes, 5933. compressibility along the critical isotherm, 8911.

creep, factors affecting, age-hardenable alloy, 5672. evaluation of rubber, 3985. filamentous materials subjected to high speed tensile impact, 5212.

flexural, of prestressed split-beam composite concrete sections, 6758.

isolated disturbances superimposed on laminar flow

in a rectangular pipe, J 64A4-50, 281 (1960). parametric, of an ideal two-frequency varactor,

5241.

revivified char in storage, 4507.

solutions, of aqueous suspensions, surface composition of hydroxylapatite, 6485. transportable ten picofarad capacitor, 5259. Bell-type provers by bottling and strapping, calibration, 6620. Bench, instrumentation, for physical laboratories, 4477. Bench-mounted and machinists' vises, R229-63. Bending and stretching of corrugated diaphragms,

3152. Benzene, and water, isomeric dinitrophenols in, 4536. three temperatures, acid-base equilibria, 3418. Benzophenone crystals at 77°K, second order effects in the phosphorescence, 9003. Bernoulli and Euler polynomials, AMS55.

Bernstein, form of a polynomial, J 70B1-168, 79 (1966). polynomials and interpolation theory to linear array synthesis, application, 5924. Beryllium aluminate (chrysoberyl) , BeOALOa, heat ca- pacity and thermodynamic properties of, from

16 to 380 °K, J 69A1-322, 13 (1965). atomic spectroscopy, NSRDS-NBS4, Vol. I. chloride, heat of formation, J 65A1-83, 59 (1961).

lithium, atomic scattering factors for the, isoelec- tronic sequences from accurate analytic Hartree-Foch wave functions, 5207. oxide and magnesium oxide, thermodynamic properties from 298 to 1,200 °K, J 67A4-221, 325

(1963). 493
ultraviolet from electron energy absorption, optical properties, 8925. Bessel functions, first kind, Jn^ix), 21<w<51, ° <x<

100, zeros of the first derivatives, J 67B3-102,

181 (1963).

fractional order, AMS55.

integer order, AMS55.

integrals of, AMS55.

Best, approximations and interpolating functions, 3986. average definition with low contrast resolution patterns, location of the plane, J 65C3-71, 195

(1961). Beta, decay of Ce1 ' 1

, matrix elements, 4164. decay using the radiations from oriented nuclei, experimental study, TN93 (PB161594).

distribution, percentage points, TN215.

emitting radionuclides in aqueous formamide so- lutions, 4990A.

particles from oriented cerium-141 nuclei, angular

distribution, 3813A.

ray spectroscopy below 4.2°K, solid state detectors, 5663.

rays, fallout, spatial distribution of energy, 3779.

rays, trapped, VLF disturbances caused by, from

the decay of neutrons produced in high-alti- tude nuclear explosions, J 68D1-325, 117

(1964). zirconium hydrides, statistical model, 6400. Bethe, eigenfunctions and eigenvalues, TN328.

Betti's reciprocal theorem, meaning, J 67B2-95, 85

(1963). Between-laboratory variability, reducing the, of TAPPI

standard T414 m-49, internal tearing resist- ance of paper, effectiveness of a reference matrial, 5202. Beverage wave antenna, optimum reception pattern

at very low frequencies, J 67D4-274, 387

(1963).

Biacetyl, acetone by azoalkanes, quenching of the triplet

state, 8967. acetone by various unsaturated hydrocarbons, quenching of the triplet state, 8968. vapor, phosphorescence and fluorescence in, 2379A.

Biaxially oriented nylon, stressed, polymer compression: visual observations, 6298. Bibliographies, M274.

Bibliography, annotated, on soft X-ray spectroscopy, Mono.52.

annotated; Soviet research in field emission, 1960-

1963, TN234.

atomic transition probabilities, M278; Mono.50. atmospheric aspects of radio astronomy, TN171.

auroral radio wave propagation, TN128 (PB161-

629). automatic antenna data processing, J 64D6-96, 743

(1960). coherence theory, J 64D6-96, 742 (1960). computer literature, 1946 to 1963, M266.

direction finding and related ionospheric propagation topics, 1955-1961, TN127.

experimental saturation properties of the cryogenic

fluids, TN309.

fading on microwave line of sight tropospheric propagation paths and associated subjects, TN302.

foreign developments in machine translation and

information processing, TN193.

foreign-language and English dictionaries in the physical sciences and engineering, M258.

ignition and spark-ignition systems, M251.

index on vacuum and low pressure measurement,

Mono.35.

ion-molecule reactions, January 1900 to March

1966, TN291.

ionospheric propagation of radio waves (1923- 1960), TN84 (PB161585).

legibility of alpha-numeric characters and other symbols, M262-1. measurement of bulk resistivity of semiconductor

materials for electron devices, TN232.

meteoric radio wave propagation, TN94 (PB161-

595). nonparametric statistics and related topics, 658A.

selected, of statistical literature: supplement, 1958-

1960, J 67B2-97, 91 (1963).

selected, statistical literature, J 64B3-34, 175 (1960); J 65B1-46, 61 (1961); J 66B1-69, 15 (1962); J 66B3-80, 109 (1962).

shielding against gamma rays, neutrons, and elec- trons from nuclear weapons. Mono.69. Soviet research in field emission, TN75 (PB161576) ; TN234.

temperature measurement—January 1953 to June

1960, Mono.27. temperature measurement, July 1960 to December

1962, Mono.27, Suppl. 1. thermophysical properties of argon from 0 to 300°K, TN217.

thermophysical properties of oxygen at low temperatures, TN137 (PB161638).

tropospheric propagation of radio waves, TN304.

tropospheric radio wave scattering, TN80 (PB161-

581). Biconical antennas, capacitor type, J 68D2-329, 167

(1964).

Bidirectional output pulses, multivibrator, 6878. Biexponential model in the 6-45 GHz frequency range, brightness temperature of the atmosphere,

5935. nature of tropospheric gaseous absorption of radio waves, J 69D6-522, 885 (1965). Bi-harmonic boundary value problem, pointwise bounds,

5572. Bilinear transformation, isometric-circle interpretation and application to VSWR minimizaton, J

69D9-562, 1271 (1965).

Billions, food for tomorrow's, 6077. Bimolecular dissociation reactions, vibrational distribution functions, 3366. Binary alloys, F. C. C, relation of the stacking fault energy to segregation at stacking faults and

to the occurrence of phase boundaries, 8988.

collision expansion of the classical N-body Green's

function, 4803. counter, a hundred megapulse per second, with impedance, 5155. cryogenic systems, an apparatus to determine the solid-vapor equilibria, 5190.

division, algorithm and rapid, 3966. error probability due to an adaptable fading model, 5934.

glasses, alkali silicate, vitrons as flow units, J

65A2-94, 117 (1961). mixture: spectral structure of critical opalescence, J 69A6-373, 523 (1965). mixtures of dilute dose gases with repulsive inter- actions at low temperature, 5213. oxide systems, 3987. quadratic form as a sum of four squares, application of quaternions, 2027A.

rare earth oxide systems, Perovskite-type compounds, 3707.

silicate glasses in the study of alkali-aggregate re- action, 3448. system barium oxide-niobium pentoxide, phase

equilibrium relations, J 65A4-115, 337 (1961). Binder solubility of the, the wear of magnetic recording

tape, 5810.

Biologic, multiple, recording for digital analysis, 4183.

Biological, physical applications, measurement of neutron flux and spectra for, H72. polymer films, measurement of thickness and re- fractive index, M256, p. 297. 494
synthesis activity of some quarternary ammonium

and related compounds that suppress plant growth, 3325. systems, water vapor boundary layers, 5855; 9086

Biologist: microscopy, optical instrumentation, 8924. Biomedical applications of analog computers, 4385.

science, digital electronic computers, 3181. Biosphere, energy exchange, 4634. Biprism method of determining the equivalent focal length of flat field lenses, J 66C4-106, 313

(1962). Birefractorv plates, superimposed, J 69C2-190, 103

(1965). Birefringence in amorphous solids, effect of hydrostatic pressure upon the relaxation, J 65A4-112, 283

(1961). Bis-8-hydroxyquinolate-copper (II) dihydrate, electron paramagnetic resonance spectrum, 6732. (8-hydroxy-5-quinolyl) methane coordination poly- mers, thermal stability, 6502. (8-hydroxyquinoline)-Schiff base coordination poly- mers, synthesis and thermal stability, J 69A1-

328,53(1965).

N-propylsalicylaldiminato copper (II), optical and

magnetic spectra, J 70A1-380, 1 (1966). (o-dodecarcarborane, CiB^Hss, crystal and molecular structure, 6669. Bismuth, lead, (7, n) cross section, 3834. lead isotopes, photodisintegration, 5031.

oxide, heats .of transformation in, by differential thermal analysis, J 69A3-342, 237 (1965). sesquioxide-niobium pentoxide, phase equilibrium

relations in the binary system, J 66A6-180, 451

(1962)

sesquioxide, polymorphism. II. Effect of oxide

additions on the polymorphism of Bi203 , J

68A2-269, 197 (1964).

sesquioxide, polymorphism—pure Bi203 , J 68A2-

268, 189 (1964).

solid and liquid, differences in characteristic elec- tron energy-loss spectra, 6692. Bismutotantalite, stibiotantalite and chemically similar ABO) compounds, synthesis and stability, 5722. Bisphenol-A epoxy resins, cryogenic adhesive properties, 4021. Bitumen content in expansion joint fillers, determination, 5282. oxidation, influence of radiant energy source, 6128. Bituminous materials, summary of symposium on re- cent research, 6410. Bivariate linear interpolation for analytic functions,

note, 3267. normal probabilities, graphs, 3560. population, distribution of quantiles, J 64B3-31,

145 (1960). Black box maximization of circular coverage, J 66B4-

86, 181 (1962). void reactor, 3816. Blackbody, blue-glass filters to approximate, 3988. Blackout occurrence, ionospheric, worldwide patterns,

4413.

polar, during the International Geophysical Year,

4845. polar-cap, delay time of, and its relation to time

delay of geomagnetic disturbances, 5275. types of, their time variations and the mechanisms

producing them, 4381. Blaschke products, the segmental variation, 5795. Blemishes, aging, inspection of processed photographic

record films for, 96. Blocks, gage, new method of measuring, J 64C3-37, 173

(1960). superior stability. Fully hardened steels, 6096. superior stability: initial developments in materials and measurement, J 64C3-38, 175 (1960). superior stability: the attainment of ultrastability, 6097.

Blood; bone equilibrium in calcium homeostasis, 6613. coagulation of, ionic charges of glass surfaces and

other materials and their possible role, 3590. coagulation studied by ellipsometry, M256, p. 335. coagulation studies with the recording ellipso- meter, M256, p. 335. pH and other physiological media, measurement

standard, J 65A3-110, 267 (1961).

physiologic media, />H standard, 3939. Blowing variables, effect of, on the durability of coat- ing-grade asphalts, 6006. Blue-glass filters to approximate the blackbody at 6,500°K, 3988. Blue material from hydrozoic acid, 3279. Board, gypsum products, R266-63.

Boiling, condensing heat transfer coefficient for hydrogen, 4483. design correlations for O2N2 and He, nucleate and

film pool, 8902.

liquid oxygen, bulk density, 4804.

liquid oxygen, experimental determination of the bulk density of, 5346.

nucleate, of hydrogen, 8903.

Boil-off calorimetry, theory, 6494. Bolometer bridge, low-level, 4530. Bolometer mount efficiency measurement technique, J

65C2-62, 113 (1961). mounts, DC-RF substitution error in dual element,

5871. Bolometric microwave power calibration techniques at NBS, 4508; 5214. Bolts and bolted joints in aircraft applications, some

problems of fatigue of, TN136 (PB161637). Boltzmann-Ehrenfest adiabatic principle, simple derivation, 1486A. Boltzmann equation, surface integral form for three- body collision, 6413. theory of the, the basis of the functional assumption, 5736. Bombardment evaporator, focused-beam electron, 6759. Bond strength, method of determining, 6584.

steel beams embedded in concrete, 4959. Bonding, adhesive, of various materials to hard tooth

tissues, 6581; 6582; 6583; 6584; 6585. Bone char, development of a new test for the abrasion

hardness, 3179.

kilning, study of the chemical reactions, 3951. mechanism of color and ash removal, 3305.

process, the role of carbon dioxide, 5791. removal of organic anions, 3295.

revivified, calcium sulfate from, 4571. unkilned, at low temperatures, 4882. Bone, conduction, hearing, 3227A.

dentin protein, flourometric demonstration of tryp- tophan, 6076. equilibrium in calcium homeostasis; blood, 6613.

tooth, characteristics of insoluble protein, 5947. Boolean functions and cellular perfect Gray codes, J 67B2-94, 77 (1963). matrices and graphs, applications of, to computer programming, 3434. matrix equations in digital circuit design, 3 152

A

Borate glass, cadmium, X-ray study, 5863.

solid solutions, ABOvtype rare earth, polymorphism, 6300. Borates, alkali, and density characteristics of some

other binary classes, density and expansivity, 682A.

crystalline inorganic, infrared spectra, J 68A5-294,

465 (1964). hydrated, infrared spectra, J 70A2-391, 153 (1966). M2 +, crystallography of some, 6437. rare earth, polymorphism of ABO*, 4234.

vitreous, alkaline earth cation distribution, 5905. Bbrazine, B3 N3 He, heat of combustion of, J 65A2-91101

(1961). Bores, gun, plating, 4232. 495
Boric oxide, liquid, low-frequency dielectric properties, J 69A3-347, 281 (1965). Borium boroscilicate, vitrious, radial distribution study,

5609. Born-Mayer potential functions as applied to the crysstalline alkali halides, 5145. Boron, 6318. aspects of the coordination chemistry, 6371. atomic spectroscopy, NSRDS-NBS4, Vol. I. trichloride, 6818.

trichloride, reaction of, with trichloride-boron tri- fluoride exchance processes, 5344.

trihalides, force fields, 6760.

trioxide during the glass transformation, change

in the heat capacity, 5943.

trioxide, viscosity and density, 9132. Boron-oxygen-hydrogen system at elevated temperatures, 3355.

Borosilicate glass, further studies in the annealing, J 70A2-390, 147 (1966).

melts, rearrangement kinetics of the liquid-liquid immiscible microphases in alkali, 8983. Boscovich, Roger Joseph, and the combination of ob- servations, 4283a, 4901A. Bose-Chaudhuri-Hocquenghem coding systems, comparison of the 3-out-of-7 ARQ, 5249; 5251. Bottling and strapping, calibration of Belltype provers,

6620. Boulder Laboratories, cryogenics at the NBS, 9105. NBS, the establishment and maintenance of the

unit of voltage, 5752. BOUMAC—a macro-programming system for scientific computation, TN203.

Bound, P-condition number of matrices with positive

roots, J 65B1-42, 13 (1961).

states in a Debye-Huckel potential, 5936. Bound-free absorption coefficient of the hydrogen negative ion, 4984. Boundaries, phase, in F.C.C. binary alloys, relation of the stacking fault energy to segregation at stacking faults and to the occurrence, 8988. plasma, with electromagnetic surface waves, in- vestigation, 6158. Boundary, aluminum, planar twin, 5567. curved, which contains an obstacle, 5127.

instability, 5063.

layer, equations, external boundary conditions, 1978A. magnetosphere, shape under solar wind pressure, shape, 6364. transition processes in a supersonic air stream,

optical study, 3699. Boundary layers, biological systems, water vapor, 5855

;

9086. forced mixing, 3545. measurement of moisture, and leaf transpiration with a microwave refractometer, 5466. stationary under conditions of continued suction with nonuniformly variable suction speeds, 1978B. Boundary value problem, a priori bounds, elasticity, J 65B4-66, 269 (1961). bi-harmonic, pointwise bounds in the first, 5572. involving plasma media, J 65B2-53, 137 (1961). Bounded, automorphic form of dimension zero is constant, 6540. compressible plasma, modes of propagation, 6872. magnetio-plasma, overdense, microwave propagation, 6210. Bounding techniques, higher order integral identities with application to, J 65B4-65, 261 (1961). Bounds, class numbers, 6614. cofactors and arithmetic minima of quadratic forms, 5215. determinants with positive diagonals, 3449.

dissipation of energy in steady flow of a viscous incompressible fluid around a body rotating within a finite region, 3450. 496

first bi-harmonic boundary value problem, pointwise, 5572. one-parametric family of matrices, 2657A.

pointwise, in the Cauchy problem of elastic plates, J 65B2-55, 157 (1961).

ratios of means, J 66B4-84, 169 (1962). Bounds, error, asymptotic expansions in turning-point problems, 6048.

error, asymptotic expansions of special functions in the complex plane, 6740.

error, asymptotic expansions with an application

to cylinder functions of large argument, 6049.

error, asymptotic solutions of second-order differential equations having an irregular singularity of arbitrary rank, 6741.

error, first approximations in turning-point problems, 5340. Boxes, volt, 6119. Branched and linear, polyethylene, heat capacity, 5759. Branching, twins of electrodeposited copper dendrites,

6108. Branched-chain aldoses, formation, TN274.

higher sugars, 3153; 4510. Brass, copper, steel, and wrought-iron pipe nipples, CS5-65. BrCN, vibration-rotation spectra, 5854. Breadth of decay quanta in gas lasers, 6615. Breakdown characteristics of semi-conductor materials,

6616. formation, optical studies of the passive films formed on iron single crystal surfaces in in- organic inhibitor solutions, 5548. second, in transistors, 4907. Breaking, octet symmetry, and "U-spin equalities," 6519. Brems strahlung beams, calibration of a monitor for use

in, J 65A5-119, 401 (1961).

cross-section formulas and related data, 3154.

differential cross section, TN81 (PB161582).

electron, magnetic field micropulsations, 4158.

electrons, results of some recent transport calculations, 9000. high-energy, and pair production ; radiative corrections, 8971.

linear polarization, 3451. thin target, bounded by a forward circular cone, spectrum, 3310. Bridge circuit, Maxwell-Wien, calibration of inductance

standards, J 65C3-69, 183 (1961). hygrometer, pneumatic, for use as a working humidity standard, 6555. low-impedance, Maxwell, 4424.

low-level bolometer, 4530. methods, calibration of potentiometers by resist- ance, 5938. pneumatic, utilizing critical flow, continuous- absorption hygrometry, 6657.

salt, 3755. tournament, problem and calibration designs for comparing pairs of objects, J 69B4-162, 323

(1965).

ultra low frequency for dielectric measurements,

J 65C1-52, 23 (1961). Bridgman-type anvils, an analysis of pressure and

stress distribution, 5189. Briggs, Lyman J.: recognition of his eightieth birthday, May 7, 1954, 962A.

Brightness, of papers containing fluorescent brighteners, 4705. temperature of the atmosphere using a bi-exponential model in the 6-45 GHz frequency range,

5935.

Brillouin, forward-stimulated, scattering, optical hetero- dyne detection, 6271. scattering in liquids, thermal relaxation, J 70A3-

396, 207 (1966).

scattering, stimulated, in the off-axis resonator,

6404.
Brittle poly-crystalline specimens on porosity and grain

size, 3175. polymers, fracture topography, 6765. Broad beam antennas, use of dual-polarized, to deter- mine the extraterrestrial intensity of the cos- mic radio noise at high frequencies, 5808. Broadband radio-star scintillations, Part I. Observations, J 68D8-385, 867 (1964) and Part II. Interpretation, J 68D10-409, 1095 (1964). Broadcast services, frequency and time, of the National Bureau of Standards, 4665. standard frequencies and time signals, WWV and WWVH, M236.

Broadcasting, time and frequency, 5825. Broadcasts by VLF and LF signals, control of WWV

and WWVH standard frequency, J 69D7-525,

915 (1965). Broadened, stark, oxygen lines in an arc plasma, shifts and widths of some, 5656. Broadening of NU3 lines of HCN, due to argon, car- bon dioxide, and hydrogen chloride, 5216. pressure, DC1 by HC1 and HC1 by DC1, 6311. pressure, prototype of relaxation, 5589. rotational lines of carbon monoxide by HC1 and by

argon, J 67A2-198, 113 (1963). Bromide, iodide; theoretical electromotive forces for

cells containing a single solid or molten flu- oride, 9110.

lithium, on the structural transition of ribonuclease

in solution, 4349. spectrophotometric determination of bromine and

hydrogen, 9029. tetrabutylammonium, in methanol-benzene mixtures. The ion pair-quadrupole equilibrium,

3842. titanium (ill) and titanium (in) (titanium tri- chloride and titanium tribromide), 3888. Bromination methods, aniline acetate, and orcinol, inter- laboratory comparison of. Determination of pentosans, 3497. Bromine, absolute isotopic abundance ratio and the atomic weight, J 68A6-306, 593 (1964).

aldoses-l-i with, isotope effects in the oxidation of. Tritium-labeled compounds X, J 68A2-262, 145

(1964). alpha beta-D-glucose, 4211. (Br I), spectrum of neutral atomic, analysis, J

67A6-238, 505 (1963).

chlorine atoms on Pyrex, mass spectrometric study,

5460. hydrogen bromide, spectrophotometric determination, 9029. 2000 to 13000 A, wavelength and intensities in the

first spectrum, J 65A3-98, 159 (1961). Bromofluoroalkanes, preparation of fluoro-and bromofluoro-aryl compound by copyrolysis, J 65A3-

107, 239 (1961). Bromofluoroaryl and fluoro-compounds by copyrolysis of bromofluoralkanes, preparation, J 65A3-

107,239 (1961). Bronzes, four, and copper, low-temperature tensile properties, 3244. Brooke variance classification system for DF bearings, J 65D3-128, 255 (1961). Brownian motion, contribution to the theory, 3167.

free particle, partial differential equations, 4198. model for the study, 4313. one-dimensional, analyticity and probability properties, J 65B4-64, 251 (1961). some applications of Hardy's formula, 4294. trapped trajectories, 6265. Brownian trajectories, trapped and polyelectrolytes, as- sociated ions, 6244. Brush cathode plasma—a well behaved plasma, 9060. B-spin and W-spin subgroups of SU (12), 9103; 9143. Bubble chambers, hydrogen, cryogenic engineering,

3170.

liquid hydrogen, 6180. Bubbler tips, preparation, 287A.

Buffer solutions, from 0 to 95° C, values of the quantity p (aH7Cl), J 65A6-132, 495 (1961). potassium dihydrogen phosphate and sodium suc- cinate at 25° C, J 67A6-242, 573 ( 1963).

reference, for pH measurements in 50% methanol,

8987.

tris (hydroxymethyl) aminomethane for pH control in 50 weight per cent methanol from 10°

to 40° C, 6617. Buffering between input-output and the computer, 658B.

Builder's template hinges, CS9-65. Building blocks, transistorized, for data instrumentation, TN68 (PB161569); TN168; TN268.

code requirements for reinforced masonry, H74.

codes and our existing school buildings, 3452.

constructions, sound transmission loss, 3307.

finish materials, 4511.

fires, measuring the heat release of materials, 4237. how strong must it be? 1732A.

Materials and Structures (Indexed under specific subjects)

.

simple transistor tester, 5217. Buildings, capacities of stacks in sanitary drainage

systems, Mono.31.

one-storied, radioactive sources. Mono.76. Buildup source, a power-series buildup factor formulation, application, J 67C4-140, 291 (1963).

roofing, effects of thermal shrinkage on, Mono.89. roofing, effects on—solar heating, radiative cooling, and thermal movement. TN231.

smooth-surfaced roofs exposed to solar heating,

effect of insulation on weathering, 5310. Bulk density of boiling liquid oxygen, 4804; 5346.

nickel samples, nuclear magnetic resonance, 6896. polyethylene at the crystallization temperature, x-ray study of isothermal thickening of

lamellae, 9146. polymers: theoretical aspects of polymer crystalli- zation with chain folds, 6493. polymers with chain folding; crystallization of, lamellar spherulites, J 65A4-114, 297 (1961).

Bullet impact, rifle, strain distributions, 9047. impact, rifle stress-strain properties of textile yarns, 9046. Burgers vector, the direction of the force, 9070. Burgess, G. K., 1874-1932, a biographical memoir,

2039A. Burning behavior of building finish materials: two

methods, 4511. Burst test for high strength fabrics, 3373. Bursts, flare-associated at 18 MC/S, 3212. 2800-MC/S radio, solar flares with associated active dark filaments, 6368. Butadiene and propylene, reaction of sulfur, hydrogen

sulfide, and accelerators, J 65A1-88, 79 (1961).

derivatives, microwave studies, 4772; 6214. styrene, acrylonitrile (ABS) plastic pipe (SDR-PR

and class T), CS254-63. Butane, n, VIII. photolysis of; vacuum ultraviolet photochemistry, 6525. photolysis of, vacuum ultraviolet photochemistry,

5841. Butyl chloride, tertiary, microwave spectrum, 5487. t-Butylammonium ion and related thermodynamic quantities from 5 to 35°, 4600. Butyraldehydes, photolysis of propionaldehyde, 5065. c C2, spectra, solidified gases at 4° and 20° K, 9025. C

3

, spectra, solidified gases at 4° and 20° K, 9024. C"-labeled cyanide, determination of reducing endgroups, 6686. Ca ii lines in Stellar spectra, identification, 4687. Ca and Sr in the rat, comparative metabolism, 3161.497
Ca+ H and K, emission cores, character of the self- reversed, 3869. Cabinets, steel medicine, CS267-65. Cable connectors, coaxial for pulses with nanosecond

risetimes, 5933. Cables, coaxial, air dielectric, cryogenic transfer lines, 5180. Cadmium borate glass, X-ray study, 5863. magnesium, zinc, and mercury, spectra, 4686. oxide-niobium oxide, phase equilibria in the system,

4220. radiochemical separations, by amalgam exchange,

4257. Calcined tissues, nature of the inorganic phase, 3852. Calcium aluminate, carbonate-free complex, preparation, J 69A1-327, 45 (1965). aluminate carbonate hydrates, some observations, J 64A4-55, 333 (1960). aluminate monocarbonate at 25 °C, heat of formation, J 65A3-102, 197 (1961). aluminate monosulfate at 25 °C, heat of formation, J 67A1-188, 1 (1963). aluminate tricarbonate at 25 °C, heat of formation, J 69A5-362, 407 (1965). aluminoferrite hydrates, J 68A5-293, 453 (1964)

;

BSS6.

aluminoferrites, reaction with water, J 68A5-293, 453 (1964) ; BSS6.

aluminosilicate hydrate, J 68A5-292, 449 (1964).

carbide, determining moisture in solid materials,

6690.

crystalline basic, orthophosphate (hydroxyapatite),

3490.

deficient hydroxyapatites, hydrogen-bonding, 3571. homeostasis, bone equilibrium; blood, 6613. nuclear optical model analysis of neutron elastic scattering, J 66A5-174, 389 (1962). strontium, comparative fixation, synthetic hydroxyapatite, 3477.

sulfate from revivified bone char, 4571.

sulfate reaction with calcium aluminoferrite hydrates, BSS6.

Calcium-45, M260-9. Calcium fluoride, barium floride, lithium flouride and

sapphire, effect of temperature on the vacuum

ultraviolet transmittance, 6717. energy of the formation of anion Frenkel pair, 6738.

optical properties, redetermination, 5160. Calculable relative corrections, inductive voltage dividers, 5405. Calculated curves for groundwave propagation over in- homogeneous earth with pronounced topo- graphical features, J 69D7-536, 1011 (1965).

diffraction effects at VLF from a localized ion- ospheric depression, TN208.

energy dissipation distribution in air by fast elec- trons from a gun source, J 65A2-93, 113 (1961). patterns of slotted elliptic-cylinder antennae, 3155. Calculating reflection of gamma rays or neutrons, image

source technique, 6593. thermostatic properties of solids, classical diagram

technique for; application to dielectric susceptibility of paraelectrics, 6635. Calculation, admittance of a parallel plate capacitor containing a toroid-shaped sample, TN336. AFMAG anomalies, 3679.

certain multiple generating functions, J 68B1-110,

13 (1964).

crystalline size distribution from X-ray line broadening, 5218. electron energy distribution functions in the ion- osphere, 6430.

electronic energies in HCO+

2 , HCO* and HCO"2, 6618. electrons and bremsstrahlung, results of some re- cent transport, 9000. energy levels of nearly symmetric rotors, 3817.

entropy, enthalpy and internal energy for real fluids using equations of state and specific heats, 6093. geometrical structure of some AH» molecules, J

68A6-312, 635 (1964). groundwave attenuation in the far diffraction re- gion, J 68D7-379, 819 (1964). higher order dipole-dipole effect in paramagnetic

crystals, J 68A1-259, 113 (1964).

radiative tail in the inelastic scatterings electrons, 5937. sunrise and sunset times at ionospheric heights along a great circle path, TN209.

temperature of a flat-plate wet surface under adiabatic conditions with respect to the Lewis relation, 6619. Calculations, autoionization probabilities, 6431.

bistatic scattering cross section of a sphere with an impedance boundary condition, J 69D2-467, 299

(1965). comparing two-point and four-point probe resis- tivity measurements on rectangular bar-shaped semiconductor samples, TN241.

energy spectra of nuclei in the 2s, Id shell, 5219. experimental observations, theoretical, leading to a model for the lower ionosphere, 5350.

field near the apex of a wedge surface, TN204.

general purpose coding systems for statistical, 9126. hyperfine splitting for the lithium atom, 5220. Monte Carlo, of the penetration and diffusion of fast charged particled, 5495. neutron age in water and heavy water for D-D

sources, 3990. number-theoretic, J 69B4-164, 335 (1965).

potential and effective diffusion constant in a polyelectrolyte solution, TN192; 5221. properties of magnetic deflation systems, 3989. random-walk, diffusion coefficients, 8979.

statistical, and Monte Carlo vs experiment: con- densation of tungsten on tungsten in atomic

detail, 6650. transformation, and representations — chemical

structures as information, 6633. Calculus, factorial arrangement, 4415.

integral, J 69B3-152, 185 (1965). simple, all-dielectric interference filters of the Fabry-Perot type, 3766. Calendar, International Geophysical, 4707; 5420; 5422;

6151. record, abbreviated, 5899.

record, International Geophysical, 4688; 5222. Calibrating laboratories, personnel requirements for

industrial practices, M248, p. 169. laboratories, personnel requirements for military

practices, M248, p. 165.

liquids and capillary tube viscometers, Mono.55. method, a standard volt box, J 67C1-114, 1 (1963). NBS photoelectric pyrometer, 4927. sources, scattered radiation from large cobalt-60, 4906. vacuum gages, 4952. Calibration, TN266; TN280.

absolute, NBS photoneutron source, 5174. absolute time, intermittent-action camera, 3133. Bell-type provers by bottling and strapping, 6620. calorimetric, of an ionization chamber for determination of X-ray total beam energy, J 66A5-172,

371 (1962). capability through interlaboratory comparisons, M248, p. 153. carrier operated microphones and other reversible transducers, 3453.

center, electronic, NBS microwave measurements,

4768. comparison, inductive voltage dividers, 5248; 5959. 498
curves, evaluation of precision of analytical methods involving linear; which measure of precision, 6537. designs for comparing pairs of objects, J 69B4-162, 323 (1965). dynamic, of pressure transducers, methods, Mono.67.

electrical energy measurement in an exploding wire experiment, 4513.

electrical instruments, 3968. encapsulated radium sources, correction factors, J 66A2-145, 103 (1962). equipment, audiovisual application, M248, p. 195. error, uncertainties associated with proving ring, 9125.

errors, accumulation, optimum distribution, 5176.

facility, high voltage, at NBS, 5147.

five gamma-emitting nuclides for emission rate, TN71 (PB161572).

frequency and time, services at the Boulder Laboratories of the NBS, M248, p. 37.

* germanium resistors at low temperatures (2-20 "Kelvin), J 70A3-400, 243 (1966). high frequency, microwave services of NBS, 6208;

6867. high-frequency, services, current developments, M248, p. 45. inductance standards in the Maxwell-Wien bridge

circuit, J 65C3-69, 183 (1961).

inductive voltage dividers, 4986. inductive voltage dividers and analysis of their opefational characteristics, 5737. instrument, systems, realistic evaluation of the

precision and accuracy of, M248, p. 63. laboratory, operating, M248, p. 213. length and mass, at the NBS, M248, p. 9. line scales, an automatic fringe counting interfer- ometer, J 65C2-64, 129 (1961).

liquid-in-glass thermometers, Mono.90; 5082. loop antennas at VLF, J 65C3-70, 189 (1961). maintenance, data processing for control of instru- ment, M248, p. 233. mass, TN288.

measurement, precision: Electricity and electronics, H77, Vol. I. Heat and mechanics, H77, Vol. II. Optics, metrology, and radiation, H77, Vol. III. methods, airglow photometers at Fritz Peak Observatory, 5480. microphones, vibration pickups, and earphones,

6621. monitor for use in bremsstrahlung beams, J 65A5-

119, 401 (1961). National Bureau of Standards mass standards for ultramicroanalysis, 4985. National Bureau of Standards tritiated-toluene standard of radioactivity, 9061. neutron sources, the correction factor for fast neutron reactions on sulfur and oxygen in the manganous-sulfate-bath, 9063.

optical, of vibration pickups at small amplitudes,

4209. peak A-C to D-C comparators, 6623. photogrammetric lenses and cameras at the National Bureau of Standards, 5223. potentiometers by resistance bridge methods, 5938. potentiometers, practical methods, TN172.

precision, of RF vacuum tube voltmeters, TN121

(PB161622).

pressure and force, at NBS, M248, p. 13. pressure, microphones, in small couplers, hydrogen

retention system for, 5393. procedures for direct-current resistance apparatus, Mono.39.

pulsation detector coils, 4002. Schlieren systems, 6624. small grating spectrometers from 166 to 600 cm"1

, J 66A3-155, 223 (1962).

strain gauge, device for extreme temperatures,

3316. system measurement error, mathematical approach

to the determination of, M248, p. 91. system, precision RF attenuation, 3390. systems, instrument, realistic evaluation of the precision and accuracy, J 67C2-128, 161 (1963). systems, microwave, M248, p. 49. tables, accurate microwave wavemeters, 3417. techniques, field strength, at NBS, 6756. techniques, microwave, at NBS, 6209. techniques, power, microwave, bolometric, at NBS,

5214. temperature measuring instruments at NBS, M248,

p. 25. temperature, of an X-ray diffractometer furnace,

4859. temperature standards on the international practical temperature scale of 1948, 4987.

test services of the National Bureau of Standards, M250.

training program, for the Navy, M248, p. 187. uncertainties, 5102. universal ratio sets, some modifications methods, TN220.

vibration pickups at large amplitudes, 3991; 4512. volt-ampere converters, TN188.

weight series using two knife-edge direct-reading

balances, J 68C4-173, 261 (1964). Calibrations at 400 and 1000 Hertz, international comparison of inductive voltage divider, 6595. hierarchy of, analysis of the accumulated error, 3422. low-frequency electrical, at the NBS, M248, p. 31. measurements, electrical and radio, 1965 accuracy, TN262-A.

measurements, 1965, accuracy in, TN262.

radiometric, ultraviolet spectrum, 5034. 350 kV, an international comparison of voltage transformer, 5913. Calibrator, TN269.

liquid-medium step-function pressure, 5874; 5956. phase-modulated, testing phase meters, 4831. Callaway theory, of thermal conductivity, foundations,

5366. Calomel electrode, 3454. Calorimeter, adiabatic, for the range 10 to 360 °K, J 69C1-181, 19 (1965). guarded fiat plate, 4481.

influence in chemistry development, 6432. measuring heat transfer through cryogenic insulation, new steady-state, 5880. Calorimeters, adiabatic, heat exchange, J 67A4-222, 331

(1963). heat capacity, adiabatic, alpha-alumina, heating

rate, 5381. measurement of absorbed dose, construction, TN163.

Calorimetric calibration of an ionization chamber for determination of X-ray total beam energy, J

66A5-172, 371 (1962).

calibration of the electrical energy measurement

in an exploding wire experiment, 4513. determination of enthalpy of graphite from 1200

to 2600 deg K, 6541. determination of half-cell entropy changes, 5224. properties of some alkali pentaborate hydrates from 15 to 370 °K, J 68A4-286, 381 (1964). residual entropies of glasses, limits, 6830. Calorimetry, air conditioning, investigation of psychrometric measurement techniques, 6597. determination of composition of complexes and

their instability constant, 6688.

electrical resistance of wires of low temperaturecoefficient of resistance, 6018. electrochemical, 6019; 6020. errors in drop, due to sample container transitions, 5341.
Calorimetry, fluid hydrogen at low temperatures and

high pressures, J 65C4-76, 231 (1961).

fluorine flame, 4661. heater lead problem, 6111.

reaction, and combustion of several compounds of interest in a light element program, 6640. report on conference, 5940. resistance thermometer, 4498. techniques. A noble-metal thermocouple for differ- ential use, 3807. theory of boil-off, 6494. Camera, commercial components, large-aperture grat- ing spectrograph utilizing, 3240. exposure of color films, selecting light balancing

filters, 3120; 3935.

filters for color photography, M259.

intermittent-action, with absolute time calibration, 3133.

lenses, airplane, location of the plane of best average definition, 3604. ultra-high speed image dissecting, for photographing strong shock waves, J 66C4-105, 297 (1962). Cameras and lenses, photogrammetric, calibration at NBS, 5223. Cane sugar refining. II. Decolorization with adsorbents,

5227. Canonical distribution in a Markovian relaxation process, exact conditions for preservation, 6056. invariant relaxation processes, nonequilibrium ther- modynamics, 6224. Canons of sound experimentation, 3770. CaO, mechanical and electrical relaxation in Th02 , 5471. 2CaOAl2 CvSi02 «H2 0, hydrothermal preparation, J

68A5-292, 449 (1964). 4CaO'3Al2 03 '3H20, x-ray diffraction pattern, J 68A6-

292, 449 (1964). CaOH+ from 0° to 40°C, dissociation constant, 3333. Capacitance of biconical antennas in magneto-ionic media; elliptical cone capacitance, J 69D2-466, 291 (1965). National Reference Standards for high frequency

impedance, 5042. techniques, refining measurements, 4270. Capacities of drains and stacks in plumbing system

installations, 1281A.

heat, 5380. plumbing stacks, 407A.

stacks in sanitary drainage systems for buildings, Mono.31.

Capacitor, air, an experimental 359-kv, 1-picofarad,

5910.

conical, analysis of coaxial two-terminal, Mono.46. improved ten-picofarad fused silica dielectric, J 69C3-196, 173 (1965). ten picofarad, transportable, construction and behavior, 5259. type biconical antennas, J 68D2-329, 167 (1964). Capacitors, cylindrical three-terminal, with thin dielectric films on their electrodes, 3777. precision air, voltage dependence, J 69C4-207, 265

(1965). Capacity, cooling of air-conditioning units, condensate

collection as a measuring technique, 5256A.

finite lattice heat, spin-lattice relaxation, effects, 6718.

heat, boron trioxide during the glass transformation, 5943.

heat, linear and branched polyethylene, 5759. Capillary action, glass joint or stopcock preventing, TN253, p. 4. tube viscometers, NBS viscometer calibrating li- quids, Mono.55.

Carbide, calcium, determining moisture in solid materials by reaction, 6690.

silicon, electroless plated contacts, 3519. Carbohydrate chemistry, 4723. 500

Carbohydrates, nomenclature, 4193. Carbon adsorbents below 400 deg Centigrade, interaction

of carbon dioxide, 6145. arc and asphalt oxidation, relationship between

intensity, 6474. arc intensity on asphalt oxidation, effect, 6440. arcs and xenon as radiation sources for laboratory weathering of asphalts, comparison 6645. atomic, negative ion, 4947. atomic spectroscopy, NSRDS-NBS4, Vol. I. carbon, ethane, distance obtained from infrared

spectra, 3203.

characteristic energy losses of electrons, 3460. composition resistors, commercial, pressure transducers, 6644. deposition of, and shadow casting of metals, 3901.

films, high area, formation and oxidation, 5365;

5754. hydrogen, water, and aluminum, X-ray attenuation

coefficients from 13 to 80 Mev, 3916.

low, steel, stress corrosion cracking, 3318. «

optical absorption spectrum, solid argon, 4815. photoproton cross sections, 3281.

positions, two, and derived heats of formation of several alkyl radicals, relative rates at: hydro- gen atom addition to olefins, 6785. resistance and helium vapor pressure measurements, 3861. resistance thermometry with mixed dc and rf currents, 3455.

resistors as low temperature thermometers in the presence of stray rf fields, 3897.

resistors for cryogenic liquid level measurement, TN200.

suboxide, and malononitrile, solid argon matrices, infrared absorption spectra, 5407. suboxide, high-resolution infrared determination of the structure, 6113. suboxide, structure, 6483. tantalum, field emission observations, 5357.

tetrafluoride, infrared spectrum, 4696. vapor in solid argon at 4 °K and 20 °K, 4469. Carbon dioxide, TN332.

absorption bands, from 5.3 to 4.6 microns, J 67A3-

207, 219 (1963). adsorbents below 400 deg Centigrade, interaction, 6145.

air, and nitrogen, absolute measurement of W for Po2T0 alpha particles, 3958.

air, argon, carbon monoxide, hydrogen, nitrogen, oxygen, and steam, tables of thermodynamic

and transport properties, 3806. argon and hydrogen chloride, broadening of the nu3 lines of HCN, 5216. reaction of hardened portland cement paste, J 66A6-

182, 473 (1962).

role of, in the bone char process, 5791.

solubility in liquid solvents at low temperatures, thermodynamics of solid, 9114. solutions of 2-amino-2-(hydroxymethyl)-l,3-propandediol, absorption, 3959. spectral line positions and intensities calculated for the 2.05 and 2.7 micron regions, TN332.

thermal conductivity near the critical point, J 66A4-169, 341 (1962).

2.8-4.2/*, 4467. Carbon monoxide, air, argon, carbon dioxide, hydrogen,

nitrogen, oxygen, and steam, tables of thermo- dynamic and transport properties, 3806. atomic oxygen, 811A. broadened by nitrogen and hydrogen, linewidths in the 2-0 band, 6178. broadening of the rotational lines of, by HC1 and by argon, J 67A2-198, 113 (1963).

liquid and gaseous, thermodynamic property values, TN202.

niobium, 5941.
nitrogen or acetylene, emission spectra of solids condensed at very low temperatures from the

electrical discharge products, 4066. oxygen on tantalum, field emission microscope used

for observations, 6240. self-broadening, in the 2x and 3" bands, J 67A3-209,

229 (1963). tantalum, study, field emission, 5358. Carbon and germanium thermometers at 4.2°K, 4277. Carbon and nickle evaporated films, hydrogen reaction, 6121. Carbon-14 and tritium in films, with a proportional

counter, radioassay. Tritium-labeled compounds

V, J 64A4-61, 363 (1960). tritium in studies of isotope effects, 5106.

half-life, 4355. half-life: comments on the mass-spectrometric method, 6450. labeled carbohydrates, synthesis, TN274. NBS, standard by Geiger-Muller and proportional gas counting, recalibration, 3743. Carbonate at low levels, use of gas phase chromatog- raphy for rapid determination, 5105. Carbonyl compounds in photodegraded plastics, the use

of visible and ultraviolet spectroscopy, 9100.

sulfide, vibration-rotation bands, J 66A2-147, 163

(1962). Carboxyl in cellulose, determination, 4032. Carnegie Institution of Washington, Department of Terrestrial Magnetism, Washington, D. C. J 68D5-364, 635 (1964). concentration in semiconducting SrTi03 , dependence

of superconducting transition temperature,

6682. frequency dependence of the basic transmission loss

in tropospheric forward scatter propagation,

3456. power and bandwidth, to achieve a given performance for multichannel radio communication

systems, required signal-to-noise ratios, 5641. Cartesian basis, 5091. diver as a density comparator, J 69C3-202, 217

(1965). Cartridge brass, M260-10. Case of con-current homogeneous and heterogeneous

nucleation: initiation of spherulite growth,

6804. Casement window units, wood, CS205-64.

Cases, two, of stress corrosion cracking in copper tubing, 9121. Casimir coefficients and minimum entropy production,

3457. Cassiopeia (23N5A) radio source, observed variations

in the amplitude scintillations, 3675. Cast aluminum alloys, stress corrosion of high strength,

4944.

iron pipe, exterior corrosion, 6066. Catalog and price list of standard materials issued by

the National Bureau of Standards, M260.

Cataloging, M276.

Catalytic effects of thermocouple materials, 4514. Cathode plasma, the brush—a well behaved plasma,

9060. ray polarography, determination of tellurium, 6687. ray tube storage system, 649A.

resistive, method of obtaining a range of current

densities, 6865. Cathodic currents, effects, corrosion of an aluminum

alloy, J 68C4-175, 283 (1964). protection and underground corrosion, soil resistivity as related, J 69C1-188, 71 (1965).

protection, coatings formed on steel, and their eval- uation by polarization measurements, J 65C3-

68, 171 (1961); 5237. protection of steel in a high resistivity environ- ment, current and potential relations, 3491.

Cation, alkaline earth, distribution in vitreous borates,

5905. exchange between molten salts and a special porcelain of high sodium content, 5942. Cations, trivalent, solid state reactions involving oxides, J 65A4-116, 345 (1961). Cattlehides, domestic, hide trim pattern, CS268-65. Cauchy problem of elastic plates, pointwise bounds, J 65B2-55, 157 (1961). Causes and measurement of walkway slipperiness, 3992. resonant frequency shifts, atomic beam machines, I. Shifts due to other frequencies of excitation, 5667. resonant frequency shifts, atomic beam machines,

II. The effect of slow frequency modulation on

the Ramsey line shape, 5668. variation in chemical analyses and physical tests of portland cement, Mono.28.

Cavitation problems in cryogenics, 3457A. symptoms of, prediction, J 65C3-65, 147 (1961).

Cavities, microwave discharge, operating at 2450 MHz,

6868. microwave refractometer, to atmospheric variations, response, 6475. reference, shallow, high-temperature emittance measurements, investigation, 5427. shallow cylindrical, test of analytical expressions

for thermal emittance, 6570. wave-guides, geometrical anisotropy of magnetic

materials, 3220. Cavity chambers, stopping powers, H79.

earth-ionosphere, theory of Schumann resonances,

6261. high mode tunable, microwave-gas interactions, 4680. ionization chambers, note on the theory, 6893. microwave, linear tuning, 6831A.

radiation, Kirchhoff's Law and its generalized application, J 69B3-148, 165 (1965). resonances for a spherical earth and a concentric

shell, 6625. resonator dielectric measurements of rod samples,

3458. resonators, dielectric spectroscopy of compressed

gases, 3156. resonators, X-band TE011, end plate modification,

3201. sample insertion hole, errors in dielectric measurements, 3534. Cayley's parameterization, further extension, 3117A. CCh and CF4 , condensed, fermi resonance, 6754. CCIR, ninth plenary assembly of, 3852A. CCO, free radical, matrix-isolation infrared spectrum,

6848. CdS, optical quenching of photoconductivity near the band edge, 8926. Ceilometer computer, design and operation, TN64

(PB161565).

Cell, dry, standard, 3623. heated, for quantitative infrared spectrophotometry,

3564. hydrogen-silver chloride, and the thermodynamics

of solutions of hydrochloric acid in 50 wt. %

methanol from 10 to 40 deg, standard electro- motive force of, 6390.

iron-nickel, galvanic currents observed during out- door exposure, 5369. materials, microtechnique for the infrared study of

solids, diamonds and sapphires, 4177. microelectrophoresis, asphaltenes in nitromethane,

velocity-depth relationship, 5845. over long periods, constancy of a modified Weston

standard, 5971. standard, new dry, major revisions, 6842.

Cells, batteries, Leclanche, impedance, 5398. containing a single solid or molten oxide, 9110;

9111. 501
dry, and batteries, impedance of commercial Leclanche, TN190.

dry, internal resistance of, a new pulse method,

3274. hydrogen-silver iodide, thermodynamics of aqueous

solutions of hydriodic acid from electromotive

force measurements, 6504. impedance of sealed nickel-cadmium dry, 6789. saturated standard, oil baths, TN141; 4799. standard, their construction, maintenance, and characteristics, Mono.84. thermometric, for calibration of liquid-in-glass thermometers, 5082. Cellular concrete floors and roofs, precast, fire tests, Mono.45. teleost bone, X-ray diffraction study, 3918.

Cellulose, cotton, spectrophotofluorometeric studies, 4930. determination of carboxyl, 4032. gamma-irradiated, electron spin resonance, 5331. vacuum with 2537A light, photolysis, 6013; 6287.

Cellulosic materials, coated and uncoated, effect of moisture on surface flammability of, 6714; 9076. materials exposed to thermal radiation, surface flame propagation, J 67C3-136, 251 (1963). polymers, fluorescence, 3952. Celsius vs. centrigrade: the nomenclature of the temperature scale of science, 4515. Cement and dental alloys: X-ray spectrochemical analysis of materials, 9145. chemistry of, proceedings of the fourth international symposium, Washington 1960, Mono.43, Vol.

I and II. concrete properties, BSS2, Part 1; BSS5, Part 2. concrete reference laboratory inspection service for concrete testing laboratories, 6433. methods for the analysis, 5478. reference laboratory (1929-1959), 3330A.

testing program, statistical aspects, 3313.

tests, statistical evaluation of inter-laboratory,

3314. Cement, portland, BSS5, Part 2, p. 27 and 41. calorimetry, 5225; 5226. causes of variation in chemical analyses and physical tests, Mono.28.

clinker, studies on the constitution, 556A. water requirements, BSS2, Part 1. Cements, hydrated aluminous, effect of heat-treatment on constitution and mechanical properties, 3192A.

o-ethoxybenzoic acid-eugenol-zinc oxide, clinical behavior, 6636. physical properties of, based on zinc oxide hydro- genated rosin, o-ethoxybenzoic acid and eugenol, 6290. review of zinc oxide-eugenol type filling materials,

6559. silico-phosphate, 4865.

zinc oxide-eugenol type, 4690. Centennial of spectroscopy, 3818. Centerable rotator for measuring properties of crystals, J 69C3-198, 191 (1965). Centering jib, simple, and goniometer for punching or

drilling spheres for structure models, 3401. Centerline correction for precision roughness specimens, J 69C4-211, 303 (1965). Centigrade, Celsius vs., 4515. Centimeter wavelengths by radiometric means, empirical determination of total atmospheric refraction, J 67D2-251, 153 (1963). waves, the absorption and dispersion of, by gases, on the index of refraction of air, J 67D6-297,

631 (1963). Central meridan passage to, ionospheric disturbance,

^elation of solar active regions, 5635.

electron density profile program : some features and

early results, 3819. ionospheric predictions based on numerical methods

of mapping, H90. Radio Propagation Laboratory, NBS, 6219. skywave radio propagation at high frequencies, prediction of ionospheric characteristics, 6306. studies of Alouette observations, 6406A.

Centrifugation when sedimentation depends linearly on

concentration, exact Faxen solution, 6057. Centroid colors, 22 ISCC-NBS, maximum contrast, 9120. Centry-old razor, 3920. Ceramic and cermet coatings, 4324. coatings, adherence, alloys, 1041B.

crystals, strength, Mono.59, p. 79. dielectrics with a very low temperature coefficient of capacitance, 3771. engineers, systems of interest, M267, Paper 6, p. 119. industry, process control, M267, Paper 3, p. 39. oxides from 1200 degrees to 1800 degrees, equip- ment and method for measuring thermal emittance, 6863. tubes and glass, a method of cutting threads, 3384. wafer tube, 3157. Ceramics at the NBS, 33A.

crystalline, fracture mechanisms in, Mono.59, p. 63. high temperature seal sapphire windows to, 6782. mechanical properties, their measurement at ele- vated temperatures, 3847.

polycrystalline, effect of micro-structure on mechanical behavior of, Mono.59, p. 103. systems engineering, M267.

ultrasounds induce flaking, from metals, 5100. vibration transducers, use of high-strength, 6520. Ceramists, phase diagrams, 6282. Cerium (Ce I), levels of neutral, low energy, 5452. description and analysis of third spectrum, 6683. 4/n configurations of doubly ionized, 6762. Cerium-139, and 141, M260-9. Cerium-141 nuclei, oriented, angular distribution of beta particles, 3813A.

oriented, application to thermal contact at low

temperature, gamma-ray distribution, 5757.

oriented, gamma-ray distribution, J 66A4-165, 317

(1962) . Cermet and ceramic coatings, 4324. specimens, temperature dependence of elastic constants, J 65C2-59, 89 (1961). Cerous magnesium nitrate, low temperature properties, 3613. magnetic susceptibility, 4160.

spin-lattice relaxation, 4305.

Certified reference materials, evolution, 3335. Cesium beam atomic time and frequency standards,

6626. beam frequency standard, evaluation, 3424. beam resonators as frequency standards, 4416.

chloride solution, aqueous, and hydrogen chloride, 5776.

halides, 4636. Cesium-137, large, sources, radiation from, 4905.

scattered, gamma rays, attenuation of, 3147. CP, emission spectrum, 6735. CF2 , absorption spectrum, vibrational analysis, 3678. infrared spectrum, 6134. CF.Nj from the ultraviolet absorption spectrum, vibrational fundamentals, 9131. CF4 and CCh, condensed fermi resonance, 6754. CH, spectrum of, from 3000 A to 5000 A, spectrophoto- metry atlas, Mono.24. CH2 and CH,, electronic structure, 3525. CH2 C1, H2 CO, H20, and their deuterated molecules, method of adjusting force constants and its application, 6864. CH,D., two infrared bands, analysis, J 67A1-191, 27

(1963) . 502
CH, and NH/, Hartree-Fock approximation, 5379. Chain folds in polychlorotrifluoro-ethylene, 4878.

folds, theoretical aspects of polymer crystallization with: bulk polymers, 6493.

integral equation, pair correlation function of a

fluid, numerical solutions of the convolution- hypernetted, 5523; 5524.

lengths, long, 5000.

link fencing, alluminum alloy, CS269-65. polymer adsorption at a surface, random-walk

model, 8980.

scission, random, by stress relaxation, measurement, 6257. Chains, Markov, 4978.

oriented, some properties of polystyrene networks,

6376. polymer, in a lattice, application of the theory of

absorbing; Markov chains to the statistical thermodynamics, 5925. saturated, two assumptions in the theory of at- tractive forces, 5832. Challenge to industry—weights and measures, 6532. Chamber, environmental, simple, for rotating beam

fatigue testing machines, 5164. flow field in a swirl, 6072. Chambers, liquid hydrogen bubble, 6180. Change, heat capacity of boron trioxide during the

glass transformation, 5943.

transition, fusion and vaporization, temperature,

pressure, heat and entropy, 5728. Changes, crystallographic, with the substitution of aluminum for iron in dicalcium ferrite, 5271. delayed ionospheric, during twilight: conjugate ob- servations of solar proton events, 6655. dentures during storage in water and in service, 3993. dimensional, of dental amalgam associated with

strain release in the silver alloy particles, 6694. double-bond structure during the vulcanization of natural rubber, J 68A5-296, 499 (1964). emittance during heating in vacuum, 3158.

half-cell entropy, calorimetric determination, 5224.

influence of atmospheric humidity during fatigue

of an aluminum alloy, J 68C2-155, 91 (1964).

living, 5944. obtained on amalgam prepared with a standardized mechanical technic, early strength, flow and

dimensional, 6003. occlusion of complete dentures caused by a pipe

habit, 5228. phase, in very-low-frequency propagation induced by an ionospheric depression of finite extent, 6247. photochemical, thin-layer chromatograms of polycyclic, aromatic hydrocarbons, 6285.

relation between refractive index and Young's modulus as the result of successive heat treat- ment, 5945. Changing character of chemical research in govern- ment, 3331. Channel capacity, loss in resulting from starting delay

in meteor-burst communication, J 64D5-85, 493 (1960). microwave attenuation measurement system, un- modulated twin, 6598. Char bone, process, role of carbon dioxide, 5791. bone, unkilned, at low temperatures, 4882.

filtration, sugar colorant during, 4716.

revivified, 4507; 4571. sugar retention, 3322. Character, automatic, recognition, TN112 (PB161613).

optical, recognition, 4816. subgroups of F-groups, J 69B1&2-137, 85 (1965).

Characteristic electron energy loss measurements at low temperature, 3994.

electron energy-loss spectra of solid and liquid bismuth, differences, 6692. electron energy losses, optical constants of thin

films from, 6268. energy losses of electrons, 3459. energy losses of electrons in carbon, 3460. energy losses of electrons in solids, 5946. formulation for nonperiodic solutions of Mathieu's

equation, J 69B1&2-141, 101 (1965). impedance coaxial line, variable, 6576. impedances, transmission line or wave-guide line, relationships between different kinds of net- work parameters not assuming reciprocity or

equality, 6343. roots of a matrix, machine methods, 253A.

variations in the antarctic ionosphere, 6627. Characteristics, age-hardenable alloys, 5056. breakdown, of semi-conductor materials, 6616. dialysable polyvinylpyrrolidone components, 4916. dosimeter films processed in phenidone-thiosulfate monobaths, 6629. dynamic spectral, micropulsation pearls, 6711. D-layer, and VLF propagation, relation between,

6473. earth-ionosphere waveguide for VLF radio waves, TN300.

fifteen coating-grade asphalts, J 64C4-41, 299

(1960). 488 megacycles per second radio signal reflected from the moon, J 64D4-65, 331 (1960). geomagnetic pulsations at frequencies near 1 c/s, J 69D8-544, 1117 (1965). HF propagation, equatorial latitudes, 5385.

insoluble protein of tooth and bone. I. Fluorescence

of some acidic hydrolytic fragments, 5947. ionospheric, CRPL for skywave radio propagation

at high frequencies, prediction, 6306. large single crystals by high-voltage X-ray Laue

photographs, 5738.

lightning, derived from sferics, 6829.

liquid nitrogen and liquid hydrogen, discharg- ing into a vacuum, preliminary study, 5883. long-term, air-ground propagation in band nine, 5451. operating, of Zener reference diodes and their measurements, 6467. operational, the calibration of inductive voltage

dividers and analysis, 5737. performance, turbine flowmeters, 4218.

physical, of agar impression materials, 9022. point-to-point tropospheric propagation and siting considerations, TN95 (PB161596). power transmission, of the ear and the skull from

hearing threshold data, 4891. programs for KWIC and other computer-produced

indexes, 5259. Raman laser excited by an ordinary ruby laser, 6628. resistance strain gages, 4516. response, of a 4 pi neutron detector, 6348. simple cryopump, 5669.

soil and vegetated surfaces to reflected and emitted

radiation, 6630. sorption and expansion isotherms of reactive lime- stone agreggate, 4591; 4594. spread F at high geomagnetic latitude, 5230.

static liquid nitrogen and liquid hydrogen, nucleation, 6235. "synchrotron light" from the NBS 180 MeV machine, 6631.

terrestrial radio noise, measurement, 5018. thin evaporated metal films, electrical resistancestrain, 5319. turbine handpieces, 4517.

turbulent, the radio refractive index near the ground, 5807. two types of dollar notes, 4443. 503
typical systems, and their comparisons, signal-tonoise, 5658. waveguides for long-distance transmission, J 65D1-

105, 75 (1961). Characterization, crystal growth research at NBS,

TN174; TN197; TN236; TN251; TN260.

large single crystals by high-voltage X-ray Laue

photographs, 5738. solution-grown ADP crystals, preliminary studies, 8955.

surface, real metals, comments, 6642.

textile yarns for use under ballistic impact conditions, 3995. Characters and recognition, mechanical reading, 4758. Charcoal, adsorption of methane and nitrogen on silica

gel, synthetic zeolite, 5732. Charge distribution of, self energy of the, scatterer, sum rules relating coherent X-ray scattering data to the diamagnetic nuclear shielding constant, 5714.

transfer, electron production in H"+H collisions, 3461. transfer, in other cases, further remarks, TN185.

Charge-storage, pulse-height analysis, 4518. surface-state device, semiconductor, application, 5203. surface states of silicon, direct observation, 5296. Charge-transfer absorption spectra of NO in Kr and ChaOH solutions, 5948. complexes, infrared spectroscopy, 6132. Charged fragments, singly, direct observation of de- composition multiply charged ions, 6698.

ions, decomposition multiply, into singly charged

fragments, direct observation, 6698. partical nuclear physics, 6334.

particles, 5072.

particles, heavy, tables of ranges and energy

losses, 6421., Chart, determining the effects of ionospheric tilts using an idealized model, J 67D6-302, 735 (1963).

interchangeability, electron tube, 4629. metric, M233. NBS microcopy resolution test, 5498. Charts, climatic, and data of the radio refractive index

for the United States and the world, Mono.22. Chebyshev approximation by abx + c, 3462. Checking, weight, of aerosols, 9138. Chemical analyses and physical tests of portland

cement, Mono.28.

analyses on two rocks, evaluation, 3205. Chemical analysis, 6632. alum-coagulated SBR synthetic rubber by a complete solution procedure, 3996. NBS copper-base spectrochemical standards, methods for, M260-7.

statistics, 5697. white cast iron standards, methods for, M260-6. Chemical and electrochemical oxidation, simultaneous,

9016.

film media, dosimetry, 4606. magnetic enhancement of perturbed lines in the

violent spectrum of CN, 5231. nuclear rockets, liquid hydrogen, 3602. physical properties of magnetic recording tape, 4452. Chemical, concentration gradient, diffusion in, 4037.

constitution of dyes, relation between the absorption spectra, 3346. elements, vapor pressure, 6045. equilibrium including second virial corrections from 1500°K to 15,000°K, tables of thermo- dynamic properties of air, 9055. etch pits in copper, 4598. examination, sampling of leather, 9002.

excitation, nonequilibrium, and chemical pumping

of lasers, 6891. information, TN285.

information, HAYSTAQ, a mechanized system for searching, TN264.

information searching, survey of computer pro- grams, TN85 (PB161586).

kinetics, TN289.

kinetics, tables, homogeneous reactions, alphabetical index, Suppl. 2 to C510.

kinetics, tables, homogeneous reactions (supple- mentary tables), Mono.34; Mono.34, Vol. 2. projects, 3997. pumping of lasers, nonequilibrium chemical excitation, 6891. purity by dielectric cryometry, J 67A6-247, 607

(1963).

reaction, electronically excited CN, 4818.

reactions, 4438; 5087. reactions at very low temperatures. A rotating

cryostat for mixing reactants at 4.2°K, 3998. reactions from time-ratio tables, TN62 (PN161-

563). reactions in kilning bone char, 3951. reactions of free radicals at low temperature, 3463. released in the ionosphere, ionosonde studies, 6160.

releases, formation of an electron depleted region

in the ionosphere, 6078; 6079.

releases in the ionosphere, ionosonde studies, J 68D2-332, 189 (1964). research at the universities in the Washington

area, 4519. research, crystal growth, 6671. research in government, changing character, 3331.

shift, 6318.

shifts, nitrogen NMR, in the azide ion, 5506. structure of plastics, effect of gamma radiation, 4048.

structures, TN285.

structures and associated information, digital handling, 6693. structures as information—representations, trans- formation, and calculations, 6633. thermodynamic properties, selected values. Part 1. Tables for the first twenty-three elements in the standard order of arrangement, TN270-1. thermodynamic properties, selected values. Part 2. Tables for the elements twenty-three through

thirty-two in the standard order of arrange- ment, TN270-2.

topology, absolute configuration, J 67A6-245, 591

(1963). Chemically induced vibrational excitation: hydroxyl

radical emission in the 1-3 micron region pro- duced by the H + 03 atomic flare, 3464; 4520. similar ABO< compounds, synthesis and stability of bismutotantalite, stibiotantalite, 5722. thinning crystals for transmission electron microscopy, 4578. Chemicals, reagent, 4263. Chemiluminescence and fluorescence in gases, spectro- scopic investigations, 6386. Chemiluminescent reaction of nitric oxide with atomic

oxygen, 4196. Chemisorbed, CO, on tungsten, isotopic mixing, 6820. nitrogen, on W, isotopic mixing, 6821. Chemistry, analytical, 5199.

acid bases, 6578. methods of separation, 5301. polymers, 3138. Chemistry, calorimeter and influence in the develop- ment, 6432. carbohydrate, 4723. cement, Mono.43, Vol. I and II. coordination, of boron, some aspects, 6371. environmental, 4068. food and civilization, 3465. free radical, 3215. free radicals, low temperature infrared studies, 6183. 504
polymers, analytical, 4490. pure and applied, role of the international union,

5792. teaching conference in the Washington area, 3466. Chemists, position titles, 3717A.

Chilled air distribution in refrigeration trailers, 4521. Chimneys and fireplaces, residential, survey of the

literature on safety, M252.

China, vitreous, plumbing fixtures, CS20-63.

Chinese characters, pictorial structure, TN254.

Chi-square and non-central F probability functions, normal approximation, 3671. Chloride, added sodium, at 25 deg. standard potential

of the silver silver chloride electrode and

activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt.%), 5689. automatic, titrator in the analysis of some ionic constituents, 4346. beryllium, heat of formation, J 65A1-83, 59

(1961).

cell, hydrogen-silver, and the thermodynamics of

solutions of hydrochloric acid in 50 wt. %

methanol from 10 to 40 deg, standard elec- tromotive force, 6390. content of the diffusion layer at a silver anode,

3467. deuterium, in heavy water from 5 to 50 deg. ther- modynamics of solutions, 6506. dodecyltrimethyl-amonium, in aqueous solutions at

23°, diffusion coefficient, 3180.

electrode and, silver-silver, activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt.%) with and without added sodium chloride, standard potential, 5689. electrode in 10 and 15% mannitol at 25 deg, the standard potential of the silver-silver, 5799. electrode in methanol water solvents, standardization of analytical data obtained with the

silver-silver, 9036. fused sodium, 4958. hydrogen, matrix-isolated, 4902. hydrogen, rotational constants, 3863.

lithium, microwave spectrum, 6212. new co-ordination compounds of copper (II), 9021.

nickel, mass spectrometric investigation of the high temperature reaction, 6189. oxidation kinetics of silver in sodium, 6022. polyvinyl (PVC) plastic pipe (SDR-PR and class T), CS256-63.

propyl, microwave spectrum of normal, 5775.

silver, electrode, 3765. sodium, silver, 4824.

solution, aqueous cesium, and hydrogen chloride, the nature of the compound obtained from,

5776. tertiary butyl, microwave spectrum 5487. titanium (III) and titanium (III) bromide (tita- nium trichloride and titanium tribromide),

3888. vapor, yttrium, mass spectrum, 6846; 9085.

vinyl, dipole moment and nuclear quadrupole effects, microwave spectrum structure, 3648.

vinyl, plastics, standards, 4940. Chloride-water, sorbitol-sodium at 25 deg, isopiestic vapor pressure measurements of the ternary

system, 5432. Chlorine, atomic weight, 4461. bromine atoms on Pyrex, mass spectrometric study

of the recombination, 5460. gamma, irradiation of polytetrafluoreoethylene,

5371. gaseous, heat of oxidation of aqueous sulfur di- oxide, J 67A5-231, 427 (1963).

polystyrene, TN276.

Chlorine-nickel surface reaction, 5095. l-chloro-2-butyne, microwave spectrum and internal

rotation, 3257.

Chloroform, molecular structure, 5021. Chlorotrifluoroethylene (C2F3CI), note on heat of vaporization, 775A.

Choking, some idealized solutions, two-phase flow of hydrogen, nitrogen and oxygen, 5673. two-phase flow literature summary and idealized design solutions for hydrogen, nitrogen, oxygen, and refrigerants 12 and 11, TN179.

two-phase flow of hydrogen, 5232. Chorus, electromagnetic radiation, high-latitude in- vestigation of the natural very-low-frequency,

5135. Chromaticity transformation, uniform, the diagram,

lines of constant correlated color temperature

based on MacAdam's (u, v), 5449. Chromatograms, paper, solid scintillation counting of H* and C

14

, 3302.

thin-layer, polycyclic, aromatic hydrocarbons, photochemical changes, 6285. Chromatographic analysis of petroleum fractions used

in oil-extended rubber, J 66A2-152, 189

(1962). determination, gas, moisture content of grain,

6768. Chromatography, 4522.

gas, analysis of methyl methacrylate copolymers,

3427. gas phase, rapid determination of carbonate at low levels, 5105. glass of controlled pore size, 6634. paper, comparisons of writing inks, 209A.

separation of pyrenediones, 9004. Chrome-retanned leather, effect of outdoor exposure on some properties, 5311. Chrome-tanned leather with vegetable tannins, 4376. Chromic oxide, etch pits, 6745. Chromium, absolute isotopic abundance ratios and the atomic weight of a reference sample, J 70A2-

395, 193 (1966).

elevated temperatures, adhesion of electrode- posited nickel, 3813. methalamine alum, adiabatic demagnetization, 641A.

plating by thermal decomposition of dicumene chromium, 4523.

thickness, internal surface of small-bore tubes, gages for measuring, 3555. Chromium and nickel solvuses in the chromium-nickel

system, redetermination, 4267. Chromosphere, influence. 3308.

low, effect of departures from the Saha equation on infrared properties. Thermodynamic struc- ture of the outer solar atmosphere, 3887. Chromotropism, sodium of bis-(meso-2, 3-diamino butane) -nickel (II) ions, 4991. Chrysene, triphenylene, pyrene, naphthacene, and

naphthaphene, 6027. CIE supplementary standard observer proposal, 1959

field trial, 6069.

(u, v, w) uniform spacing system, spectral tri- stimulus values, 6385. Circle paths and sunrise-sunset times, TN303.

Circles, packing inequalities, 5553.

Circuit, digital, core, transistor-magnetic, TN113

(PB161614).

digital, design, absolute simplest form, 3810A.

digital, design, Boolean matrix equations, 3152A.

dynamic, techniques used in SEAC and DYSEAC,

691A.

klystron protection, 5438. signal switching analysis, 3929.

stable transistor, diode in feedback loop, 3186. theory, report, J 64D6-96, 687 (1960).

transistor bias, stable, diode in feedback loop, 3186. tyratron ringing circuit, 4830.

Circuits, long distance tropospheric communication,

4853. 505
microwave, non-reciprocity and time-reversal,

3668.

scatter, long distance tropospheric, 4217. tropospheric communication, equipment characteristics and their relation to system performance for, TN103.

tropospheric communication, transmission loss predictions for, TN101, Vols. 1 and 2. tropospheric long-distance, path antenna gain and comments of properties of 400 mcps, 5555. tropospheric scatter communication, nomograph

for predicting the performance, 5149. Circuits and waves, radio, URSI, report of U. S. Commission 6, J 64D6-96, 671 (1960).

Circulants, unimodular, groups, J 69B4-160, 313

(1965). Circular coverage, black box maximization, J 66B4-86, 181 (1962).

cylinder, conducting, pattern synthesis with a flush-mounted leaky-wave antenna, J 66D6-

236, 783 (1962).

disk, acoustic radiation pressure, 941A.

disk source, radiation field, J 65C4-78, 249 (1961).

exponential, and hyperbolic functions, AMS55.

loop antenna immersed shallowlv in a conducting medium, J 69D9-559, 1243 (1965).

loop, impedance, in an infinite conducting medium,

J 66D4-212, 499 (1962).

polarization of gamma rays from neutral particle decays, 4825. sewers, hydraulics, in accordance with the Manning formula, 3398. Circumferentially uniform electroplating of tube bores, 3999. Citation indexes, automatic, Mono.91. indexing, automated, M269, p. 189. Citations in the literature of physics, M269, p. 193.

Civil defense, shielding calculations, 3763. CI atoms with CO, matrix-isolation study of the reaction, 6851. Clamped normal fluid, wave mode modification in liquid helium, 9136. Class numbers, bounds, 6614.

Classical, approximation in the statistical theory of mass spectra, 4200. diagram technique, for calculating thermostatic

properties of solids; application to dielectric susceptibility of paraelectrics, 6635.

field theories, 3820.

gases, three-particle scattering operator, 5541. many-body system, cluster formulation of the exact

equation for the evaluation, 5236. model for the study of isotope effects in energy exchange and particle exchange reactions, 5865.

Classification, automatic, M269, p. 157 and 211. categories, M269, p. 245. electromagnetic surface waves, 5191. morphological, in NBS mechanical translation sys- tem, 6873. properties of inorganic compounds, 5233. resonances in the electron scattering cross section of Ne and He, 5234. system for DF bearings, Brooke variance, J 65D3-

128, 255 (1961). two-electron excitation levels of helium, 5235.

Classified particles, sieve techniques, 6366. Classifying documents with multiple discriminant functions, M269, p 217. Clay mineral content of two domestic Kaolins, 3468. minerals, 4866. Clay-water and sand-water mixtures, atomistic ap- proach to rheology, 3446.

properties, role of surface tensions, 3862. C1CN, microwave and infrared spectra, 6799. C1CO, free radical, infrared spectrum, 6851.

Cleavage surfaces, thermally evaporated zinc, morphology, 6218. Clebsch-Gordan coefficients, SU(6), for the product

35 X 56, 9052. Climatic charts and data of the radio refractive index

for the United States and the world, Mono.22.

Climatology, Mono.92.

elevated super-refractive layers arising from at- mospheric subsidence, 5949. ground-based radio ducts and associated fading

regions, TN96 (PB161697).

Clinical applications of research findings in dental

materials, 3304. behavior of o-ethoxybenzoic acid-eugenol-zinc oxide cements, 6636. dosimetry, H87.

effect of warping of a denture; method of evaluating, 3253. evaluation of complete dentures made of eleven

different types of denture base materials,

6637.

Clocks, atomic frequency standards, 3445. atomic, for space experiments, 3444. atomic, sun-time, 4327. widely separated, with microsecond synchronization and independent distribution systems, 3913A.

Closed circuit liquid hydrogen refrigeration system,

3469.

Closed-loop, manned-machine combined system, pro- gramming, 3725.

Closed-shell systems, pair correlations, 6281. Cloud layer of Venus, nature of (from radiometric

observations at microwaves), J 69D12-601,

1580 (1965).

Clouds, electron, artificially produced, ionosonde, obser- vations: Firefly 1960, TN135 (PB161636).

electron, observed with spaced ionosondes, the life- time and movement of artificially produced,

5769. infrared transmission, 3839. Clumping techniques and associative retrieval, p. 230, M269.

Cluster formulation of the exact equation for the evaluation of classical many-body systems,

5236. Cm spectrum of OH, 6014. CN, electronically excited, double-resonance experiment,

4608.

identification of transitions involved, optical detection of microwave transitions between excited electronic states, 6270.

"tail" bands, a spectral study of active nitrogen

flames exhibiting, 6384. thermometric molecule, 3782.

ultraviolet band spectrum, pressure dependence of

rotationally perturbed lines, 3723.

violet spectrum, chemical and magnetic enhance- ment of perturbed lines, 5231. CO band, 4590. chemisorbed on tungsten, isotopic mixing, 6820. CO+

, potential-energy curves, 8949. fourth positive system, Franck-Condon factors and

r-centroids, 3549. matrix-isolation study of the reaction of CI atoms,

6851. matrix-isolation study of the reaction of F atoms,

6852. CO+ and CO, potential energy curves, 8949. COa-foreign gas mixture, 5952. CoTM gamma radiation, influence of temperature and

relative humidity on the photographic re- sponse, J 65C3-72, 203 (1961).

sources, intensity find spectral distribution of scat- tered radiation, 5764. 506
Coagulation of blood, ionic charges of glass surfaces and other materials and their possible role, Coastline, nature of the electromagnetic field, 6881. Coated and uncoated cellulosic materials, effect of moisture on surface flammability, 6714; 9076. Inconel and tvpes 321 and 430 stainless steel, total hemispherical emittance, J 66C3-102, 261

(1962). Coated sphere, high frequency scattering, J 66D5-222,

613 (1962). Coating-grade asphalts, characteristics of fifteen, J 64C4-49, 299 (1960).

effect of blowing variables on the durability, 6006. Coatings formed on steel by cathodic protection and

their evaluation bv polarization measurements,

J 65C3-6S, 171 (1961) ; 5237. interference filters, tolerances for layer thick- nesses in dielectric multi-layer, J 64A6-70, 487 (1960). refractory metals, formed by anodic treatment and

by vapor deposition, 4000. space vehicles, 3470. Coaxial adjustable sliding termination, 5866. attenuators, rapid insertion device, 3290. cable connectors for pulses with nanosecond rise- times, 5933.

cables, air dielectric as cryogenic transfer lines, 5180. diode switch for the UHF band, a low input VSWR, 5875.

line, variable characteristic impedance, 6576. multistub, line tune, 5879. power meter calibration using a waveguide standard, J 70C2-223, 125 (1966).

T, TN263.

two-terminal conical capacitor, Mono.46.

transmission lines, Mono.96.

Cobalt, determination of trace amounts, 9050.

dilute alloys of nickel, 4794.

nickel, alloys, 4706. Cobalt-57, M260-9.

Cobalt 59, 6334. Cobalt-60, M26019. gamma radiation in air ducts, TN74 (PB161575).

large, calibrating sources, 4906. Coblentz, William Weber, scientific contributions, 5044. Co-channel interference, airborne television coverage in the presence of, TN134 (PB161635).

Code, building, requirements for reinforced masonry,

H74.

electricity metering, 6638.

pulse, modulation frequency shift system, error

rate in multiple frequency shift system and

the output signal noise ratio in frequency

modulation, 6446. Codes, practical, research, 1130A

Coding and theory, information J 64D6-96, 671 (1960). systems, Bose-Chaudhuri-Hocquenghem comparison

of the 3-out-of-7 ARQ, 5249; 5251. systems for statistical calculations, 9126.

Coefficient, attributes or events, M269, p. 41. dodecyltrimethyl-ammonium chloride in aqueous

solutions at 23°, 3180.

iterative association, M269, p. 159.

real gas, suppression at high temperature of ef- fects due to statistics, 9051. sedimentation equilibrum second virial, polymers

in good solvents, effect of heterogeneity in molecular weight, 6251. sedimentation, polystyrene in dilute solution, con- centration dependence, 6433A. thermal expansion and Young's modulus for a one- dimensional model of a solid, 5238. water in glass, concentration-dependent diffusion, 5256.

Coefficients, activity, hydrochloric acid in, aqueous methanol (33.4 wt.%) with and without added

association, M269, p. 33. complete density expansion of momentum correlation functions, nonanalyticity of transport,

6890. dependence of absorption, upon the area of the absorbent material, 5531.

differences, zeros of polynomials and fractional

order, 5864.

diffusion, and microscopic fluctuations of a nonequilibrium plasma in a magnetic field, 6866. electromagnetic scattering, for concentric spheres and the problem of interference free enclosures, J 68D10-414, 1145 (1964).

electron attachment, hydrocarbon flame inhibitors, 5326. elementary derivation of time-correlations formulas for transport, 6036.

extinction, of triplet <—> triplet transitions in aromatic compounds, 6753. Fourier, TN142 (PB 161643); TN305.

frequency-dependent transport, in fluid mechanics,

6766. homogeneous materials in the infrared at elevated temperatures, preliminary studies directed toward determination of spectral absorption,

8954. Kihara parameters and second virial, for cryogenic

fluids and their mixtures, 5434. osmotic and activity, of tetraethylammonium io- dide in aqueous solution at 25 deg, 5551. osmotic and activity, of tris (hydroxymethyl) aminomethane and its hydrochloride in aque- ous solution at 25° C, 8929. prescribed, location of the zeros of some infra- polynomials, 6256. prescribed, structure of infrapolynomials, 6260. prescribed, zeros of infrapolynomials, 4384. random-walk calculations of diffusion, 8979. sodium chloride at 25 deg, standard potential of the silver-silver chloride electrode, 5689. SU(6) Clebsch-Gordan, for the product 35 X 56, 9052. transport, and time-correlation functions in sta- O +H gas mixtures at high temperatures,

5414. transport, and time-correlation functions in statistical mechanics, 9116. * transport, gases, method for finding the density expansion, 5477. vacuum-ultraviolet absorption, of water and

methane, deuterium isotope effect, 6691. X-ray mass attenuation, TN284.

Cofactors and arithmetic minima of quadratic forms, bounds, 5215. Coherence theories of tropospheric radio propagation,

5950. theory, bibliography, J 64D6-96, 742 (1960). Coherent Raman effect in the off-axis Raman resonator,

5951. X-ray scattering data to the diamagnetic nuclear

shielding constant and to the self-energy of

the charge distribution of the scatterer, sum

rules relating, 5714.

Coil, cryogenic, for megajoule energy storage, 6667.

Coils, pulsation detector, calibration, 4002. technique for reducing errors in permeability measurement, 3407. Coincidence experiments, visible light, '5636. Colemanite, low temperature phase transition, 3612. Collaborative test, 5739. Collagen, effects of gamma radiation, 3197. heat precipitation, 5016.

Collection, condensate, measuring technique for study- ing the cooling capacity of air-conditioning

units, 5256A.

ions produced by alpha particles in air, 3471. 507
Collective correlation, Landau damping, 4726. correlation of plasma, 4524.

correlations, plasma oscillations, 5568. excitations in Al, Be, and Ge, observed line shapes.

6242. model, dynamic theory of the nuclear, 6002. theory, dynamic, odd-A nuclei, 6710; 9072.

Colleges, invisible, 6310.

Collins Radio Company, Cedar Rapids, Iowa, J 68D5-

364, 634 (1964).

Collision diameters and nonresonant absorption in the foreign-gas broadening of symmetric top molecules, 6227.

effects in hydromagneto-ionic theory, J 69D1-446,

95 (1965).

frequencies, experimental method of estimating

F-regions, 5193. frequencies of free electrons in an ionized region, the electricallv short antenna for measuring,

J 65D4-141, 371 (1961). gas atom with a cold surface, 3472. induced absorption in compressed gases, 4525. induced microwave absorption in compressed

gases, 4526; 5952. phenomena in astrophysics, geophysics, and

masers, papers on the symposium, TN124

(PB161625).

processes and ion decomposition in a linear, pulsed

time-of-flight mass spectrometer, 8905. three-body, in the Boltzmann equation, surface

integral, 6413.

Collisional deactivation of excited ethylene, 9129.

Collisionless plasma, connection between shielding and

stability, 5258.

Collisions, Ar+ —Ar, at 50 keV, interpreation, 6812. between liquid drops and solids, note on particle

velocity, J 64A6-71, 497 (1960). coulomb, incoherent scattering of radio waves by a plasma, 6441.

effect of hydrogen-hydrogen exchange, 6008.

electron exchange, interpretation of frequency

shifts, 6153. exchange, hydrogen-hydrogen effects, 5308. interpretation of frequency shifts due to electron exchange, 6008. ion-atom, lectures, TN185.

liquid drop, 4145.,

liquid drops with liquids, TN89 (PB161590).

proportional to energy, arbitrary magnetic induction, radio wave reflections at a continuously

stratified plasma, 5623.

theories, atomic spectra, connection between, 5530.

Colloid and surface properties, TN289.

Colloquium spectroscopicum internationale, 5596.

Color, BSS4.

correction, instant, 6140.

films, camera exposure, 3120.

films, nomograph for selecting light balancing fil- ters for camera exposures, 3935.

filter nomograph, 4001; 6639.

four, achromats and superchromats, 3548.

identification, problems, 4924.

identifications for industry, coordinated, TN152.

language, universal, 6575. matching functions, 5954. measurement and specification, 3159. measurement, spectrophotometer-integrator sys- tems, glass filters for checking performance,

J 66A3-154, 203 (1962). perception with abridged color-projection systems, demonstration, 3380. phenomena associated with energy transfer in afterglows and atomic flames, J 67A4-228, 379

(1963). phenomena in polymer failure, microscopy, 4765. phenomena in polymer fracture, J 67A6-249, 625

(1963). 508

phenomena in polymer fracture, microscopy, 5484. photography, selection of camera filters, M259.

projections, two-primary, appraisal of Land's work,

3435. reactions with phenylenediamines, measurement of photochemical degradation in certain plastics, 6199. reproduction, abridged, 4460.

signal, recognition tests, correlation, 3379.

small, differences, evaluation, 3205.

sorter, TN263.

specification and designation, 6382A.

sugar, and turbidity measurements, 4557. system, lovibond, 5007. temperature, correlated, spectral distribution of

typical daylight as a function, 6383. temperature, lines of constant correlated, based on MacAdam's (u, p) uniform chromaticity trans- formation of the CIE diagram, 5449. temperature, spectral distribution of typical daylight as a function of correlated, 9027.

tests, 4527.

tests for antioxidants, 4528. Color and ash removal by bone char, some mechanisms,

3305. Colorado, Boulder, satellite scintillation observations,

6358. present and future of astrophysics and its effect on

industry, 6470. University of, Boulder, Colorado and NBS, Observatory report, Joint Institute for Laboratory

Astrophysics, 6241. Colorant, sugar, during char filtration, 4716. Colored glass standards, J 67A6-243, 577 (1963). Colorimeter, thermoelectric, development of filters, J 67C4-143, 319 (1963). Colorimetric data to Munsell renotations, mechanized

conversion, 3635. determination of 5,6-dichlora-2-benzoxazolinone in leathers, 4529. method for measuring polyester degradation due to weathering, 5129; 5239. TAPPI, enzymatic methods, determination of starch in paper, 3177. Colorimetry, 6385. modern and Maxwell, 4165. paraforpal fields, 5953; 5954. Portland cement, I. Effect of various porcedures on

the determination of heat of solution, 5226. Portland cement. II. Application of various heat-ofsolution procedures to determinations of the heat of hydration, 5225. Colors of signal lights, United States standard, H95;

3149; 4976. 22 ISCC-NBS centroid, maximum contrast, 9120. Column chromatography, separation of pyrenediones,

9004, decolorization experiments with theory, 3162. Combination of observations, 4283A; 4901A.

Combinatorial analysis, AMS55.

problem and a single decoding method for cyclic codes, 5867. Combined analog-digital differential analyzer (cadda), 3373A; 3473. Combustion and other properties of kerosene and re- lated fuels, 4785. reaction calorimetry of several compounds of interest in a light element program, 6640. study, use of a vacuum spectrograph, 903B. Comets, fluorescence in, Markov process, 4659. Commencement Address, Albert Einstein, as I remember him, 6015. Commencements, geomagnetic, 4801. Comments on "airglow", 2058A.

application of experimental design to the study of a test method, 5243. 'auroral sporadic-E ionization', J 67D4-272, 383

(1963)
Austin's Formula, J 69D11-579, 1465 (1965).

calibration of pulsation detector coils, 4002.

'collisional detachment and the formation of an

ionospheric', J 68D2-335, 215 (1964).

difference between a non-LTE and a pure absorption, model for the line-blanketing effect, 6641. empirical inference of Doppler widths, 5240. experimental investigation of backscattering of radio waves from the equatorial electrojet, 5957.

fire tests papers, 5246.

limits to the utilization of the refractive index at ground level as a radio-meteorological parameter, 3476A.

liquid-medium step-function pressure calibrator, 5956. mass-spectrometric method, half-life of carbon-14,

6450. measurement of the phase velocity of VLF propagation in the earth ionosphere waveguide,

J 69D8-551, 1195 (1965). mode theory of VLF radio propagation for a spherical earth and a concentric anisotropic iono- sphere, 5242. models of the ionosphere above hma IF2, 3476. NRL solar Lyman-Alpha results, 3922. new precision low-level bolometer bridge, 4530.

obscurities of oscillator noise, 5955. obstacle gain and shadow loss, 5244. parametric behavior of an ideal two-frequency

varactor, 5241. plan for the self-qualification of laboratories, 4003. properties of, 400 mcps long-distance tropospheric

circuits, path antenna gain, 5555. Rosen interaction potential of two helium atoms,

5245. Rysers "normal and integral implies incidence" theorem, 3921.

signal section specifications 69-59, of Association

of American Railroads, 3160. surface characterization of real metals, 6642. time-correlation expressions for transport properties, 3475. use and preparation of hard gallium, 4296. use of net rate processes and the equivalent twolevel atom in non-LTE computations, 4004. VLF diurnal phase changes and solar flare effect, 4531. Zener diodes as voltage standards, 5247. Commerce, U. S. Department of, for advancing state science and technology, current programs in, 6674. Commercial carbon composition resistors as pressure

transducers, 6644. x-ray emulsion, rate dependence in solarizing, 6333. Commission for spectroscopy, triple, 5491. Committee, report of, acoustics research survey, 8992. E-2, emission spectroscopy, 5638. Common language, one mans opinion, 5543. Communication between man and machine, 4532.

circuits, long distance tropospheric, 4853.

circuits, tropospheric scatter, a nomograph for predicting the performances, 5149.

electronics, 4533. HF, centers, siting criteria for, TN139 (PB161640).

ionospheric scatter, optinum antenna height, 3701.

lines and electric supply, safety rules for the in- stallation and maintenance, H81.

links, tropospheric, performance, singly and in tandem, predicting, 5585.

loss in channel capacity resulting from starting delay in meteor-burst, J 64D5-85, 493, (1960). lunar point-to-point, 5453. lunar surface radio, Mono.85.

meteor-burst, elementary considerations of the ef- fects of multipath propagation, J 64D5-86, 495 (1960).

radio, forecasts, solar disturbances, 4291.

reliability, prediction, noise in VLF to HF bands,

5507.

single tropospheric, links and for several links in tandem, performance predictions, TN102

(PB161603).

system, NBS meteor burst, 3342. systems, surface and satellite, TN126; 4186. tropospheric, circuits, equipment characteristics and their relation to system performance, TN

103. tropospheric, circuits, transmission loss predictions

for, TN101, Vols. 1 and 2. tropospheric, links, singly and in tandem, 4854. Communications, index for ACM, 5404. multichannel radio, systems, required signal-to- noise ratios, RF signal power and bandwidth, TN100.

re-entry, approach to improve, by suitable orientations of antenna and static magnetic field, J 69D6-517, 851 (1965). space radio, propagation problems, J 66D4-202,

375 (1962). systems, multichannel radio, required signal-to- noise ratios, carrier power and bandwidth to achieve a given performance, 5641. Comonomer, surface-active, bonding to dentin, 6581; 6582; 6583; 6584; 6585. Comparative fixation of calcium and strontium by synthetic hydroxyapatite, 3477. measurements on polystyrene with three different equilibrium ultracentrifuges, 4534. measurements with intensity standards for high- energy, 3906. metabolism of Ca and Sr in the rat, 3161. pH measurements on papers by water extraction and glass electrode spot tests, 4005. rate measurements with a single-pulse shock tube, 5958. study of absolute zenith intensities of [OI] 5577,

3374. study of the correlation of the seasonal and diurnal

cycles of transhorizon radio transmission loss and surface refractivity, J 66D5-219, 593

(1962). Comparator, precision noise, 5882A. Comparators, calibration of A-C to D-C, 6623.

voltasre transformer calibration at NBS, J 69C4-

206, 257 (1965). Comparatory, TN280.

density, Cartesian diver, J 69C3-202, 217 (1965). Poweli, 4849. precision noise, spectral density, J 66C4-108, 323

(1962). Comparing, method, two nearly equal potentials directly

in parts per million, 5476. Comparison of, adsorbents, low temperature adsorption

of nitrogen and methane from hydrogen gas, 5130. atomic beam frequency standards, 3375. atomic frequency standards, 6543. atomic time scales, 5131.

calibration of inductive voltage dividers, 5248;

5959. column decolorization experiments, 3162. experimental reaction cross sections with various

relations obtained from SU.i, 5961. experimental results with Anderson's theory, 6311. four different methods of determining drying

shrinkage of concrete masonry units, 4006.

ionization produced in air by alpha particles near

5 Mev and by beta particles, 4008.

lens response for sinusoidal and square-wave

targets at several focal positions, J 65A6-127,

465 (1961). low temperature adsorption of nitrogen and methane from hydrogen gas on three different adsorbents, 5130. 509
measurements of intensity standards for high en- ergy bremsstrahlung, 3906. mode theory and ray theory of VLF propagation, J 65D4-139, 357 (1961). mountain slope and radiosonde observations, 6544. NBS two-pressure humidity generator and the NBS standard hygrometer, 6542. national standards for roentgen measurement,

3478. observed atmospheric radio refraction effects with

values predicted through the use of surface weather observations, J 67D3-262, 273 (1963):

5250. observed tropospheric refraction with values computed from surface refractivity, 4007. observed VLF attentuation rates and excitation factors with theory, J 68D1-307, 1 (1964). radar auroral reflection data with acoustic wave

theory, J 69D7-529, 959 (1965).

relative acidic strengths of the isometric dinitro- phenols in benzene and water, 4536. rubidium-87 and proton Zeeman transition fre- quencies in the earth's magnetic field, 4537. single-point and two-point loading for determining

the strength of flat glass, 5962. standard and microtests for international rubber

hardness, 4535. SU3 prediction with experiment, 5960. TAi and the NBS-A atomic times scales, 5868. theorems for symmetric functions of characteristic

roots, J 65B2-49, 113 (1961).

theoretical and experimental data on phase velocity of VLF radio waves, 3923. 3-out-of-7 ARQ with Bose-Chaudhuri-Hocqueng- hem coding systems, 5249-5251. two independent atomic times scales, 5131. two melting-pressure equations constrained to the

triple point using data for eleven gases and

three metals, TN183.

United States and Canadian free-air ionization chambers, 4538.

volt boxes, human engineering in design of a console, 6119. xenon and carbon arcs as radiation sources for laboratory weathering or asphalts, 6645. Comparison, international, atomic frequency standards

via VLF radio signals, 6810. current-ratio standards at audio frequencies, 6594.

dielectric measurements, 6149. inductive voltage divider calibrations at 400 and

1000 Hertz, 6595. voltage transformer calibrations to 350 kv, 5913. Comparisons, signal-to-noise characteristics of some

typical systems, 5658. tearing-strength for leather, 6646. writing inks by paper chromatography, 209A. Compensated solenoid giving a uniform magnetic field over a large volume, J 69C1-185, 49 (1965). Compensation and measurement, drag, with manned

satellites; feasibility study, J 67C3-135, 247

(1963). Compilation and correlation of the P-V-T data of nor- mal hydrogen from saturated liquid to 80° K,

3376. Compilation of the melting points of the metal oxides, Mono.68.

physical equilibria and related properties of the hydrogen-carbon monoxide system, TN108

(PB161609).

physical equilibria and related properties of the hydrogen-helium system, TN109 (PB161610).

physical equilibria and related properties of the hydrogen-nitrogen system, TN110 (PB161611). thermodynamic data, review at NBS, 6503. Complementary symmetry emitter-follower, 3924.

Complete density expansion of momentum correlation

functions, nonanalyticity of transport coeffi- cients, 6890. dentures made of eleven different types of denture

base materials, clinical evaluation, 6637. dentures, restoration of, inadvertently warped by

the patient: report of case, 8997. dentures, strain release, 5703. description of the normal subgroups of genus one

of the modular group, 5869. mode sum for LF, VLF, ELF terrestrial radio wave fields, Mono.78.

scattering parameters of polydispersed hydro- meteors in the X 0.1 to X 10 cm range, J 69D6-

523, 893 (1965). Complex conductivity of some plasmas and semi-conductors, 3479. formation between manganese (II), nickel (II) and

zinc (II) ions and some symmetrically substituted ethylenediamines, 5252. formation of monomeric amides with lithum perchlorate, 4539. insertion ratio measuring systems, precision detector, 6305. Lorentz group with a real metric, 5963. molecules, negative surface ionization, 6882. number ratio calculator using nomograms, TN250.

permeability and permittivity, TN311.

plane, error bounds for asymptotic expansions of

special functions, 6740. systems, confidence limits for the reliability, 5257.

variable, method for computation of error function,

6551. Complexes, cuprocyanide, 6688.

diols and cuprammonium reagent, 3480. EDTA, (IV); polarographic analysis of titanium,

9091. infrared spectroscopy of weak charge-transfer,

6132. inorganic, designation of Ligand positions, 6684.

instability constant by calorimetry, determination

of composition, 6688. low-spin d4, osmium (IV), magnetic susceptibilities and dilution effects, 5456. Compliance-time-temperature relationships from indentation measurements on a pure -gum rubber

vulcanizate, J 69A4-354, 347 (1965). Compliances, audiofrequency, of prestressed quartz, fused silica, and aluminum, 5931. Complicating factors in the gas phase photolysis of azomethane, 5253. Component aging experiments, statistical models, 3794. search for a slow, in alpha ionization, 5655. Components, dialysable polyvinylpyrrolidone, 4916. power appearing in the harmonic analysis of a

stationary process, 3821. variance, 851A. Composite concrete sections, prestressed split-beam,

flexural behavior, 6758.

cylinder, theory of diffraction, J 65D1-99, 19 (1961). Composites, construction, 5964. Composition, complexes and their instability constant by

calorimetry, determination, 6688. high atmosphere from F-region measurements,

implication of diurnal, seasonal and geo- graphical variations, 6255. irradiation on the glass transition temperature of methyl methacrylate-styrene copolymers, effects, 6012. properties and behavior of ball pens and inks, 1291A.

resistors, commercial carbon, as pressure transducers, 6644. surface, of hydroxylapatite derived from solutions behavior of aqueous suspensions, 6485. 510
work and interrelation of international and national organization engaged in the standardization

of dental materials and therapeutic agents,

6647. Compound-atom states for two-electron systems, 6648. Compounds, ABOi, chemically similar, synthesis and

stability of bismutotantalite, stibiotantalite, BaTiGesO,, 3822. nature, from aqueous cesium chloride solution and

hydrogen chloride, 5776. Compounds, added organic, reactions of hot methyl

radicals. Gas-phase photolysis of methyl iodide, 6099.

alloys, acetinide element, 4738. aromatic, extinction coefficients of triplet <—> triplet transitions, 6753. aromatic, reactions of methyl radicals, 5788; 5789. coordination, line-formula notation system, 6548. copper (II) chloride, 9021. inorganic, classification and properties, 5233. photodegraded plastics, use of visible and ultraviolet spectroscopy to identify carbonyl, 9100. presence of organic, other than hydrocarbons, radiolysis or propane-cis , 5625.

several, of interest in a light element program,

combustion and reaction calorimetry, 6640.

tert-butyl, at elevated temperatures, thermal de- composition, 6500. Compressed gases, cavity resonators for dielectric spec- troscopy, 3156.

collision induced microwave absorption, 5952. Compressed, microwave absorption, 3644. Compressibility along the critical isotherm, on the behavior, 8911. apparatus for determination, of hydrogen at low

temperatures and high pressures, J 65C4-76, 231 (1961). eleven inorganic materials, J 69A1-324, 29 (1965). ionospheric in VLF radio propagation, 6822. natural rubber at pressures below 500 kg/cm2

, J

68A3-271, 259 (1964). parahydrogen, 15 to 100° K, to 350 atm, J 67A2-

204, 173 (1963). Compressible isotropic plamsa, resonances of a spherical

void, 6347. plasma, bounded, modes of propagation, 6872. plasma media, radiation from sources immersed,

6326. Compression, polymer: visual observations on stressed

biaxially oriented nylon, 6298. properties of hard tooth tissues and some restorative materials, 3481. Compressive strength of concrete, 4840. dental amalgam, effect of rate of loading, time of

trituration and test temperature, 5312. properties of the fresh concrete, discussion of paper

on predicting, 5994. Compromises between word grouping and document

grouping, p. 15, M269. Compton scattering by K-shell electrons, 4009. Computable capacitor, evaluation of the NBS unit of

resistance, J 65A3-97, 147 (1961). Computation, configuration, statistical, and free volume

of a polymer molecule with solvent interaction, 5695.

diffraction fields for grazing angles, 2665A; 3680. error function of a complex variable, method, 6551. Hankel functions, TN216. measurement of the fading rate of moon-reflected UHF signals, J 64D5-81, 455 (1960). modified Fresnel integral arising in the theory of

diffraction by a variable screen, TN224.

numerical, time-dependent properties of isotopically disordered one-dimensional harmonic crystal

lattices, 5522.

orthonormalizing, advances, 3964. permeability and permittivity of a relatively small

ring sample in a toroidal coil, TN311.

rapid Loran, approximate method, 954A.

scientific, BOUMAC, a macroprogramming system, TN203.

stationary boundary layers under conditions of con- tinued suction with nonuniformly variable suction speed, 1978B.

statistical, configuration and free volume of a polymer molecule with solvent interaction, 5695. whistler ray paths, J 65D5-155, 485 (1961). Computational problems concerning the Hilbert matrix, J 65B1-44, 19 (1961). involving integral matrices, J 65B1-43, 15 (1961). techniques for the use of the exact Drude equations

in reflection problems, M256, p. 61. Computations, TN330.

antenna cut-back factor for LF radio waves, TN330. non-LTE, comments on the use of net rate processes and the equivalent two-level, 4004. SEAC, subsonic flows, 3778. Computed spectra and line parameters for water vapor

bands at 2.7 n, Mono.71.

transmission spectra for 2.7 micron H?0 band, 5254. Computer, TN318.

Abel inversion, 5132. aided inquiry service, TN290.

analog, method for obtaining N£ oscillator strength from arc spectroscopic measurements, 6231. analog, side-on arc spectroscopy, use, 6488. buffering between input-output, 658B.

ceilometer, design and operation, TN64 (PB161-

565). control of precision instrument inventory, 6649. descriptors to documents, training; experiments in automatic indexing and experiments in infor- mation correlation, 6509. design, electronic, reflection of logistics, 3858A.

digital, direct quantitative analysis of microstructures, 5992. interpretation of English text and picture patterns,

5965.

literature bibliography, 1946 to 1963. M266.

logic, TN268. MAGIC-A machine for automatic graphics inter- face, 6840. oriented language, from formulas, 3215A.

output, phototypesetting, TN170.

processed information-recording and association system, M269, p. 181. produced indexes, characteristics of programs for KWIC, 5229. program, general purpose, TN125 (PB161626). program, ionospheric mapping by numerical methods, TN181.

program, statistical and numerical analysis, OMNITAB, H101. programming, applications of graphs and Boolean

matrices, 3434. programming, plotting circles of constant over- pressure around targeted points, TN249. programs for chemical information searching, sur- vey, TN85 (PB161586).

simulation of street traffic, TN119 (PB161620).

simulation of traffic on nine blocks of a city street, 4540. system for generating "pronounceable" names,

3953. systems analysis, evaluating, and design work in the Federal Government, 6053. systems, concurrently operating, 3164. technology outside the United States, 3941. transmission spectra for, 2.7 mu, H2O bands, 5255. vector ratios using nomograms, TN250.

weather data acquisition, 3376A. 511
you can always tell a, but you can't tell it much,

9147. Computer, digital, analysis, electrocardiographic data,

digital recording, 3182.

electronic, analysis, 3722.

electronic, automatic screening of normal and ab- normal electrocardiograms, 3982. numerical analysis of the thermal environment of occupied underground spaces with finite cover,

6236. Computers, TN334.

analog, theory and biomedical applications, 4385. application of, in design and control of systems, M267, p. 81. design and control of systems, M267, Paper 4, p. 81. digital electronic in biomedical science, 3181.

digital, magnetic amplifiers, 2622a.

electronic, aid to medical diagnosis, 3364.

electronic digital, at NBS, development, 332A.

electronic digital—their use in science and en- gineering, 2541A.

electronic, growth and roots, 5002. factors influencing the design of original-document scanners for input to computers, TN245.

new, using digital computers in the design and

maintenance, 4402. Computing and data processing capabilities in the Soviet Union, 4541. evolution of concepts and languages, 4999. machines, index to Journal, 5403.

real, imaginary and absolute values of vector

ratios, nomagraphs, 6889. Concentration, carrier, semiconducting SrTiOs, dependence of superconducting transition temperature, 6682. dependence of the sedimentation coefficient of poly- styrene in dilute solution, 6433A. dependent diffusion coefficient of water in glass, 5256. Faxen solution for centrifugation when sedimentation depends linearly, 6057. Concentrations of vibrationals excited formed in the

flash photolysis of N02 , 6249. Concentric anisotropic ionosphere and spherical earth, comment on the mode theory of VLF radio propagation, 5242. ring antennas with low sidelobes, investigation, 6596.

shell and spherical earth, cavity resonances, 6625. sphere, conduction-cooled, glass trap, 5968. Concentrically stratified troposphere with a smooth profile, on the theory of wave propagation, part

II. Expansions of the rigorous solution, J

66D1-172, 31 (1962).

stratified troposphere with a smooth profile, on the theory of wave propagation, Part I. Discussion

of the extended W. K. B. approximation, J 64D5-82, 467 (1960). Concept and determination of pB., 3163.

differential reflectivity as applied to the reflection of beam-limited radiation by a convex body,

J 69D2-468, 317 (1965).

localized-induction, on a curved vortex and motion

of an elliptic vortex ring, 6832. Concepts and languages of computing, 4999. meaning of x-ray protection standards, 3767.

insertion loss, 6139. Conceptual standards, 6827. Concerning, bi-exponential nature of the tropospheric

_ radio refractive index, 4011. limitations and further corrections to geometricoptical theory for LF, VLF propagation be- tween the ionosphere and the ground, J 68D1-

318, 67 (1964). mechanism of reflection of electromagnetic waves

from an inhomogeneous lossy plasma, J 69D6-

518, 865 (1965).

potential refractive index and the molecular refractivity, 4012. radiosondes, lag constants, and radio refractive index profiles, 4010.

solution of the VLF mode problem for an anisotropic curved ionosphere, J 67D3-264, 297

(1963). theory of radiation from a slotted conducting plane

in a plasma environment, TN223.

Concrete, bond strength of steel beams embedded, 4959. cement properties, BSS2, Part 1; BSS5, Part 5. cement reference laboratory inspection service for concrete testing laboratories, 6433. compressive strength, 4840. crack propagation and the fracture, 4019. freezing-and-thawing durability, laboratory tests

in the U.S.A., 4071.

fresh, discussion of paper on predicting compressive strength from the properties, 5994.

joist floor and roof construction, R265-63. masonry units, comparison of four different methods of determining drying shrinkage, 4006. properties, introduction and summary, 3589.

reinforced, columns, steel spirals, R53-63.

sections, prestressed split-beam composite, flexural behavior, 6758. testing laboratories, cement and concrete reference laboratory inspection service, 6433. width of cracks in, at the surface of reinforcing

steel evaluated by means of tensile bond speci- mens, 3371. Concretes, lightweight and normal-weight, creep and

drying shrinkage, Mono.74. Con-current homogeneous and heterogeneous nucleation, case of: initiation of spherulite growth,

6804. Concurrently operating computer systems, 3164. Condensate collection as a measuring technique for studying the cooling capacity of air-condition- ing units, 5256A.

Condensation coefficient of arsenic trioxide glass, 3483. model producing crystalline or amorphous tetra- hedral networks, 5870. tungsten on tungsten in atomic detail: Monte Carlo and statistical calculations vs experiment,

6650, 6651. Condensations, coronal, and loop prominences, 6835. Condensed CF4 and CCh, fermi resonance, 6754.

olefins, oxygen atom reactions, 6278, 6279.

olefins, reaction of ground state oxygen, 6336. oxygen and nitrogen, nu vibration of methane,

5516. Condensed version, spectra distribution of typical daylight as a function of correlated color temperature, 9027. Condenser microphones, free-field correction, 6089. method for measurement of E'/T' in the reciprocity

calibration, 3639. Condition of certain matrices, J 69B4-163, 333 (1965).

matrices, note, 94A.

Conditional inertia indices, 3896. Conditionally periodic separable systems, mean motions, J 65B2-52, 131 (1961). Conditioning calorimentry, air, investigation of psy- chrometric measurement techniques, 6597. Conditions, adiabatic, with respect to the Lewis relation, calculation of the temperature of flat- plate wet surface, 6619.

exact, preservation of a canonical distribution in a Markovian relaxation process, 6056. second order waves in hypo-elasticity, 4542. Conductance, copper m-benzenedisulfonate hexahydrate

in N-methylpropionamide from 20° to 40°, 5966. DC dielectric, (reciprocal resistance) and conductivity (reciprocal resistivity) measurements,

6697. 512
electrolytic, ammonium dihydrogen phosphate solu- tions in the saturation region, 5324. glass immersed in molten salts, 6652. potassium chloride in highly purified N-methylpropionamide from 20° to 40°, 5967.

solutions of water, acetic anhydride, and acetyl chloride in acetic acid, 4013. Conducting circular cylinder by a slot, currents induced on the surface, J 66D3-201, 335 (1962).

cylinder, short right circular, electric polarizibility, J 64B3-30, 135 (1960). half space, dipole radiation, J 65D6-159, 547

(1961) . sphere, electromagnetic response, to a dipole field, 3683. sphere embedded in a semi-infinite dissipative medium, scattering, J 66D5-221, 607 (1962). Conduction-cooled, concentric sphere, glass trap, 5968.

electronic, in rutile (TiO.) , 3524A.

rc-type rutile (Ti02 ), multiple-band, 6876. steady state heat, cylinders with multiple con- tinuous line heat sources, J 67C2-125, 119

(1963). Conductive-disk method of measuring the thermal conductivity of insulations, 4988. Conductive floors, 4543.

Conductivities, thermal, Powell comparator method,

4849. Conductivity, electronic and magnetic susceptibility, oscillatory behavior, 3276.

(reciprocal resistivity) measurements and DC di- electric conductance (reciprocal resistance),

6697.

viscosity of simple fluids, thermal, 6498. water, ultra low- by electrophoretic ion exclusion, J 64A6-76, 527 (1960). Conductivity, thermal, 5815. carbon dioxide near the critical point, J 66A4-169,

341 (1962). foundations of the Callaway theory, 5366. gases: carbon dioxide near the critical point, J- 66A4-169, 341 (1962). gases; coaxial cylinder cell, J 66A4-168, 333

(1962) . measurement, 3846. metals through the application of the principle of corresponding states, correlation and prediction, 6662.

solid ELO and D2O at low temperatures, 5819. thermoelectric power of rutile (TiOs) , 9106.

viscosity of simple fluids, 9107. Conductometric determination of sulfhydryl groups in swollen polycaprolactam fibers having disulfide and alkylene sulfide crosslinks, J 66A2-151, 185

(1962). Conductor, stratified, numerical results for the surface impedance, TN 143 (PB161644).

Conductors, electrical, high temperatures, high-speed

(milliseconds) method for simultaneous meas- urement of specific heat, enthalpy, and resistivity, 6546. rectangular, exact inductance equations for, with

applications to more complicated geometries, J 69C2-192, 127 (1965). Cone, semi-finite, and use of exact eikonal, radar scat- tering from coated perfect conductors, J 68D6-

371,749 (1964). Conference proceedings

:

electromagnetic measurements, 4998. chemistry of cement, Mono.43, Vol. I and II. collision phenomena in astrophysics, geophysics, and masers, TN124 (PB161625).

ellipsometry in the measurement of surfaces and

thin films, M256.

mechanical behavior of crystalline solids, Mono.59.

microstructure of ceramic materials, M257.

non-linear processes in the ionosphere, TN211,

Vol. 1-6.

propagation of ELF radio waves, TN61 (PB161562). standards laboratory, M248.

statistical association methods for mechanized doc- umentation, M269.

systems engineering in ceramics, M267.

Conference, propagation of ELF electromagnetic waves,

3377. report on Salzburg, radiochemical methods of analysis, 8976. Conference reports, Weights and measures:

1960: M235.

1961: M239.

1962: M244.

1963: M254.

1964: M263.

1965: M272.

third international, precision electromagnetic measurements, 5085. Confidence limits, for the reliability of complex sys- tems, 5257. Configuration, f

3

, eigenfunctions J 67B3-101, 169

(1963).

interaction in H3 and EL, 6653.

statistical computation of, and free volume of a polymer molecule with solvent interaction, 5695. Configurations, doubly ionized praseodymium (Pr III), 6081. 4f6s and 4f67; in doubly ionized, 5969.

4/n, of doubly ionized cerium, 6762. low even, in the first spectrum of ruthenium (RuI),3243. plasma, use of index of refraction as a means for

study, 6521.

s

2p" (n=l, 2, 4, 5), highly ionized atoms, 5389. several open shells, interaction between, 6805. Confined arc, electron density measurements in magnetically, 6728. Confluent hypergeometric functions, AMS55.

Conformation and frictional properties of polystyrene

in dilute solutions, 4544. polymer near a surface, proper accounting, 6557. polystyrene adsorbed at the (6) -temperature,

6654. Conformations, polymer near a surface, proper account- ing of, 8963. pyranoid sugars and derivatives, 3119. pyranoid sugars: III. Infrared absorption spectra

of some acetylated aldopyranosides, J 64A5-

65, (1960). pyranoid sugars. IV. Infrared absorption spectra

of some fully acetylated pyranoses, J 65A3-

109, 249 (1961). Congruence subgroups, inclusion theorems, 3231. subgroups, normal, modular group, 5510. subgroups, normal subgroups of the modular group,

6892. Congruences for the partition function to composite

moduli, 4014. Conical obstacles, diffraction by smooth, J 64D4-

64, 317 (1960). Conjugacy of magnetic disturbance variations, 5740. Conjugate observations of solar proton events: delayed

ionospheric changes during twilight, 6655. point observations at a variety of high geomagnetic latitudes, 5970. regions and possible oscillation of the ionosphere, ionospheric absorption, 6162. regions at high magnetic latitude, some observations of short-duration cosmic noise absorption

events, 6375.

stations, fluctuations in ionospheric absorption

events, 6075.

stations, geomagnetically, cosmic noise absorption

events, 6663. 513
connection between the properties of oriented linear graphs and analyses of lumped physical sys- tems, J 69B1&2-136, 79 (1965). Connectors and adapters on accurate attenuation measurements at microwave frequencies, 6011. coaxial cable, for pulses with nonsecond risetimes, 5933. Connection between shielding and stability in a collisionless plasma, 5258. Tauberian theorems and normal function, 4417. theories of collisions and of atomic spectra, 5530. Considerations relative to an atomic definition for the

unit of time, 6374. using turbine-type flow-meters in cryogenic service, 6656. Consistent orderings, Boolean process formulations, J 67B4-107, 249, (1963). Console for the comparison of volt boxes 6119. Constancy of a modified Weston standard cell over

long periods, 5971. Constant and volume measurements on liquids at high

pressures, simultaneous dielectric, 9008.

anistic (p-methoxybenzoic) acid in the system eth- anol-water at 25 °C, J 64A4-58, 351 (1960). bounded automorphic form of dimension zero, 6540. correlated color temperature, lines of, based on MacAdam's (u, a.) uniform chromaticity trans- formation of the CIE diagram, 5449. diamagnetic nuclear shielding, and to the self- energy of the charge distribution of the scatterer, sum rules relating coherent X-ray scat- tering data, 5714.

dielectric, and loss angle of solid-disk specimens, techniques for using air-gap method for precise determination, 6423.

dissociation, of acetic acid in deuterium oxide from

5 to 50 deg, 6704.

effective diffusion, in a polyelectrolyte solution, cal- culations of the potential, 5221.

instability, by calorimetry, determination of composition of complexes, 6688.

ionization, m-nitrophenol from 5 to 50 deg, 5765. "magnetic" and "ampere," definition of, 6677.

rate, for Nt+02 -N2 +Ot at 300 deg. K, correction

in laboratory measurement of, 6659A.

second dissociation, deuteriophosphoric acid in deu- terium oxide from 5 to 50 deg., 6360.

spin-orbit coupling, of nitric oxide, Determination

from fundamental and satellite band origins, 6387. time and frequency (1963), 5505.

2, 4, 6-trinitro-?n-cresol in water at 25 °C, spectro- photometry determination of ionization, J

64A6-78, 533 (1960). volume valve, III. NBS gas thermometer, 6879. Constants, acetylene, rotation-vibration, 5649. attenuation, short sections of waveguide and the

losses in waveguide joints, two-channel nulling method for measuring, 6573. Cr>03 crystals, dielectric, 5291. determination of molecular, 6800.

dissociation, of acetic acid and dihydrogen phos- phate ion from 10 to 40°, 8987.

elastics, cubic lead fluoride at room temperature,

6720.

elastic, single crystal Th02 at 25° C, 6016.

(elastic) of some cermet specimens, temperature

dependence, J 65C2-59, 89 (1961).

equilibrium, of proton-transfer reactions, 5339.

force, and its application to ELO, H2 CO, CH.C1, and

their deuterated molecules, method of adjusting, 6864. interpolation formula for platinum resistance thermometers, 4545.

ionization, of four dinitrophenols in water at 25 °C, J 64A4-57,347 (1960). mathematical, AMS55.

measurement of the lattice, neon isotopes in the temperature range 4-24 °K, 5468. o-nitrophenol and 4-nitor-m-cresol from 5 to 60

deg, 5766.

optical, aluminum in vacuum ultraviolet, 4817.

optical, iron in the visible region, 8923.

optical, thin films from the characteristic electron energy losses, 6268.

optical, vacuum ultraviolet and electron energy

losses, 6267. physical and conversion factors, AMS55.

physical, systematic errors, 4968. propagation, for ultrasonic moves in melting and

molten polyethylene, determination of, 5987. quadrupole coupling, microwave spectrum of hydrazoic acid, 5605.

rotational, of excited vibrational states of li N» 1G0,

6354. SrTi03 , polaron coupling, 8945.

units, electrical engineering, M268.

Constitution, atmosphere at magnetospheric levels, J

68D5-363, 597 (1964). atmosphere, ionizing radiation, 6159. CuFer,Os , 9062. diagram for 16% Cr-2% Ni stainless steel, 4546. topside ionosphere, 6250. Constraints, parabolic, all-integer programming algo- rithm, 5188. Construction and application of a class of modular functions, 3166. behavior of transportable ten picofarad capacitor, 5259. calorimeters for the measurement of absorbed dose, TN163.

composites, 5964.

floor and roof, two-way concrete joist, R265-63.

fractional factorial designs of the mixed 2

m 3" series, 3484. Hadamard matrices, 3332. Michelson interferometer for Fourier spectroscopy, J 69C1-179, 5 (1965). sandwich, under lateral and axial loads, 745B.

statistical, of a single standard from several avail- able standards, 6481. thesaurus automatically from M269, p. 41. Constructions, insulated flat-roof, 4168. Contact, application to thermal, low temperature, gamma-ray distribution from oriented cerium141, 5757.

lenses, standards, 5691. properties of thin films on semiconductors, 5741. Container, fluid theoretical model for predicting ther- mal stratification and self-pressurization, 6572. Contaminated samples of size three, a note, J 70B2-

175, 149 (1966). Content, bitumen, expansion joint fillers, determination, 5282. cation-exchange between molten salts and a special porcelain of high sodium, 5942. moisture, grain, gas chromatographic determination, 6768.

total electron, the ionosphere content at middle la- titudes near the peak of the solar cycle, 5806. Contiguous, secondary sulfonyloxy groups, action of

zinc dust and sodium iodide in N, N-dimenthyl- formamide; simple method for introducing non- thermal unsaturation, 6580A. Contingency tables and Markov chains, 4978. application of information theory to analysis, J

66B4-87, 217 (1962). zero frequencies and the 21 test, 5150. Continuing project, standards, 9039. Continuity equation for electron density in the iono- sphere, 8912. Continuous-absorption hygrometry with a pneumatic

bridge utilizing critical flow, 6657. 514
HF radio waves, spatial properties of amplitude

fading:, J 68D12-435, 1309 (1964). measurement, of the density of flowing fluids, in- strument, 5413. poker game, 3378. Continuously operating He:! refrigerator for producing temperature down to %° K, 4015.

stratified plasma with collisions proportional to energy and arbitrary magnetic induction, radio wave reflections, 5623. Continuum and the independent particle model, metastable levels, 5474.

coefficients of association, M269, p. 33. description of a high-temperature plasma, 5973. determination of oscillator strengths; inelastic elec- tron scattering from rare gases, 6127.

ionization, electron impact, excitation of optically forbidden states, 6748. metastable levels in, and the independent particle model, 6206. rare gases by electron energy loss measurements,

observation of optically forbidden transitions, 6239. states of H and the free-free absorption coefficient, 6658. theory of a plasma, 5974. Contrast, 22 ISCC-NBS centroid colors of maximum,

9020. Contribution, nonthermal electrons to auroral absorption of radio waves, 6434. theory of Brownian motion, 3167. theory of shell corrections, 5975. Contractility and melting of feather keratin, 4759. Contraction theorem, Banach's, some extensions, J 69B3-151, 179 (1965). Contribution, chapter on Thermal Insulation, 5260. theory of corrugated guides, J 64D5-92, 533 (1960). Contributions of government and private agencies to standards, 1660A.

Control, computer, of precision instrument inventory,

6649. computer preliminary logical design, "Mail Separator," J 66C3-103, 271 (1962).

relative humidity and temperature in rubber labora- tory of NBS, 6659.

stability. Representation of diurnal and geographic

variations of ionospheric data by numerical methods, 8993. standards, whats new, 5858A; 6536. system for any hydraulic ram-operated device, TN237, p. 7. system standards, evolution, 9077. temperature, structure and variation of the quiet ionosphere, 5725. terminology—A report on U. S. Standards activity, 4016. thermocouple, of radio-frequency heating, openprobe, 6266. time, status of frequency, 5699. WWV and WWVH standard frequency broadcasts by VLF and LF signals, J 69D7-525, 915

(1965). zone refiner with temperature, 9149. Controlled atmosphere chamber, J 67A3-215, 269 (1963). atmospheres, simple arc device for spectral excitation, 9007. pore size, chromatography on glass, 6634. potential coulometry, TN276.

properties, impurity, ionic solids, 5402; 6792. temperature oil baths for saturated standard cells, TN141.

Controller, load, 4911. maintaining a constant rate of vaporization in fractional distillation, 4418. Controls, source leak, use of transistors in Van de

Graaff, 5838.

Convection, criteria for turbulence, J 66A4-168, 333

(1962). phenomena from plants in still air, 5261. Conventional definition of mismatch loss be abandoned,

6365. Convective circulation in water induced by evaporative

cooling, 4017. Convergence of asymptotic solutions of linear differ- ential equations, 1430A.

Gauss' alternating procedure in the method of least squares, 3272. Rayleigh quotient iteration for the computation of

characteristic roots and vectors: III. Generalized Rayleigh quotient and characteristic roots with linear elementary divisors; IV. Generalized Rayleigh quotient for nonlinear element- ary divisors; V. Usual Rayleigh quotient for non-Hermitian matrices and linear elementary

divisors; VI. Usual Rayleigh quotient for nonlinear elementary divisors, 3273. normality of powers of normal random variable, 4547. Convergent kinetic equation from the generalized master equation, theory of irreversible processes in plasmas, 6495. Conversion, amplitude-probability distribution function

for atmospheric radio noise from one bandwidth to another, J 66D6-231, 713 (1962). early melting-point temperatures, 5297. factors and defined values; recommended unit

prefixes; general physical constants, M253.

factors and physical constants, AMS55.

Conversions, domain, of BaTiOa, 5152. Converters, impedance, two negative, 4966.

Convertibility, M276. Convex membranes, asymptotic lower bounds for the fundamental frequency, 1267B.

metrics, J 69B3-150, 175 (1965). surfaces to irregular terrain situations, application of diffractions, J 68D2-338, 239 (1964). Convolution-hypernetted, numerical solutions of the, chain integral equation for the pair correlation function of a field, I. The Lennard-Jones

(12.6) potential, 5524. integrals occuring in the theory of mixed path

propagation, TN132 (PB161633).

numerical solutions of the, chain integral equation

for the pair correlation function of a fluid,

II. The hard sphere potential, 5523. Cool-down of cryogenic equipment, liquid requirements,

5450. warm-up of large powder-insulated Dewars, 5261A.

Cooled IR detector in an optical system, 6605. Cooling and heating of air flowing through an under- ground tunnel, J 65C3-66, 157 (1961). capacity of air-conditioning units, condensate col- lection as a measuring technique for studying, 5256A.

liquid hydrogen, helium gas injection, 5349. load of refrigerated vehicles by free evaporation

of liquid nitrogen, measuring, 6859. load of stationary refrigerated vehicles, laboratory study of effect of solar radiation, 5439A.

Cooperation, International Geophysical, calendar record, 5222. Cooperative acquisitions, M276.

dental research between the Federal Government

and the American Dental Association at NBS,

6373. intramolecular transition in poly-L-proline, evi- dence, 6054. Coordinate systems, spacetime, 6382. Coordinated color identifications for industry, TN152.

copper", electron paramagnetic resonance of tetra- hedrally; the tetrachlorcuprate ion, 6029. Coordination, bis (8-hydroxy-5-quinolyl) methane, poly- mers, thermal stability, 6502. 515
chemistry of boron, 6371. compounds of copper (II) chloride, 9021. compounds, line-formula notation system, 6548. polymers, thermogravimetric study of some new

transition metal-Schiff base, 9115. Copolymer, lamellar morphology, J 68A3-272, 269

(1964). Copolymer, radiolytic stress relaxation of an

ethylene-propylene, 8978. Copolymers, effects of composition and irradiation on

the glass transition temperature of methyl

methacrylate-styrene, 6012. ethylene-propylene: infrared, crystallinity, and

creep studies, 6052. ethylene-propylene in infrared spectroscopy, de- termination of propylene, 5286. methyl methacrylate, by gas chromatography,

analysis, 3427. Copositive and completely positive quadratic forms,

5262. Copper, absolute isotopic abundance ratio and atomic weight of reference sample, J 68A6-305, 589

(1964). Copper acetate monohydrate, zinc-doped, electron para- magnetic resonance spectra, 6733.

arc, ionization in plasma, J 66A2-148, 169 (1962). base alloys, accuracy or solution X-ray spectro- metry analysis, M260-5.

base, NBS, spectrochemical standards, methods for the chemical analysis, M260-7.

base, NBS, spectrochemical standards, preparation, M260-2.

brass, steel, and wrought-iron pipe nipples, CS5-65. chemical etch pits, 4598.

crystals with low electrical resistivity, 8956. deformed, dislocation loops, 4597. deformed, observations on dislocation loops, 5527.

dendrites, electrodeposited, growth twins and

branching, 6108. dendrites, electrodeposited, pseudopentagonal twins,

6321. deposits on single crystals of copper, 4298.

dilute alloys: pure copper, annealed and cold-drawn, low-temperature transport properties, 3245. electrodeposited, physical and mechanical, 8942. electrodeposited, relation of partial (110) pole

figures to thickness and microstructure, 5634. electron paramagnetic resonance of tetrahedrally coordinated; the tetrachlorocuprate ion, 6029. electron paramagnetic resonance spectrum of some

tris-complexes, 6443.

first spectrum, spectral-line intensities and qf- values, J 66A6-185, 497 (1962). Copper, four bronzes, low-temperature tensile properties, 3244. indium above aqueous solutions, glow discharge

spectra, 3222.

isotopes and the atomic weight of copper, 6880. longitudinal magnetoresistance, 6834A.

m-benzenedisulfonate hexahydrate in N-methylplylpropionamide from 20° to 40°, 5966. molybdenum, silver, tantalum, and gold at 662

kev, total photoelectric cross sections, 3356A.

natural variation of copper isotopes and the atomic

weight, 6880. physical and mechanical properties of electrode- deposited, 8942. precise assay of, using small samples, 8951. residual arc spectra of seventy elements diluted, 3752.

single crystal surfaces in water, oxide films formed.

III. Effect of light, 6468.

solid oxygen condensed at very low temperatures from a gas discharge, reaction between, 3742. spark planing damage in, TN321.

tubing, two cases if stress corrosion cracking, 9121.

zinc in lung tissue, TN276.

wire tables, H100. Copper II, chloride, some new co-ordination compounds,

9021. gaseous, structure, nitrate as determined by elec- tron diffraction, 5800; 5801.

nitrate, gaseous, as determined by electron diffraction, 5800; 5801. Copy retrieval, replica, rapid selector as currently used

for information search, 5786. Copyrolysis of bromofluoroalkanes, preparation of

fluoro- and bromofluoroaryl compounds, J

65A3-107, 239 (1961). Cordunum crystals, synthetic, electron microscopy and

diffraction, 6730. Core geometry, flux switching mechanisms in ferrite cores and their dependence, TN90 (PB161591).

spherical, impedance characteristics of a uniform

current loop, J 64D3-61, 295 (1960). Coring an electroform, 4548.

Coriolis effects and magnetic torques on a magnetically suspended rotating sphere, J 67D5-285, 533

(1963) . Cornell University, Ithaca, N. Y. J 68D5-364, 631

(1964) . Corner reflector on the moon, optical radar, 8927. Corona, inner solar, during June 1959, 3335A.

Coronal condensations and loop prominences, 6835;

6836.

ions, excitation state, 4919.

line emission, structure, 5053.

lines, red and green, 4644. self-emission upon the excitation state of coronal

ions, 4919. Corporate level standards in a decentralized company, M248, p. 131. measurements standards real and abstract, M248,

p. 139. Corrected calculations of sound absorption in non-associated liquids, 4549.

optical pyrometer readings, Mono.30. Correction, atmospheric refraction errors in radio height finding, J 67D2-250, 139 (1963). "Doppler studies of the ionosphere with vertical incidence," 4550. exospheric electron density estimate using the nose

whistlers of March 19, 1959, 4419. factor for fast neutron reactions on sulfur and

oxygen in the manganous-sulfate-bath calibra- tion of neutron sources, 9063. factor tables for four-point probe resistivity measurements on thin, circular semiconductor

samples, TN199.

factors for the calibration of encapsulated radium

sources, J 66A2-145, 103 (1962).

"fields of electric dipoles in sea water—the earth- atmosphere-ionosphere problem," J 67D1-243,

63 (1963).

free-field, condenser microphones, 6089. instant color, 6140. laboratory measurement of the rate constant for

N.+ +O2—

N

2 +0? at 300 deg. K, 6659A.

_ method for measuring the directivity of directional couplers, 5976. molecular hydrogen rotation-vibrating interaction, intensity of quadrupole fundamental, 6144.

optical distance measurements for the fluctuating atmospheric index of refraction, 6660. systematic atmospheric refraction errors of baseline-type radio tracking systems and methods,

6418. systematic wavelength shifts in atomic beam devices, 3485. Corrections, calculable relative, inductive voltage

dividers, 5405. contribution to the theory of shell, 5975. 516
1500"K to 15,000°K, tables of thermodynamic

properties of air in chemical equilibrium in- cluding second virial, 9055.

first-order perturbation, to the Hartree-Fock ap- proximation for helium, 5360. multiple scattering, for proton range measurements, 6218A. NBS list of IGY flares, 5263.

radiative. I. High-energy bremsstrahlung and pair

production, 8971. terminal-zone, for a dipole driven by a two-wire

line, J 66D6-235, 775 (1962).

color temperature, spectral distribution of typical daylight, 6383 ; 9027. constant, color temperature, lines of, based on MacAdam's (u, v) uniform chromaticity trans- formation of the CIE diagram, 5449. walk and diffusion equations in a driving force, 6661. Correlation, TN334.

arrays, resolution characteristics, J 65D3-126, 245

(1961). auroral arc and subvisible monochromatic 6300 A

arc with outer-zone radiation, 3486.

coefficient for attributes or events, M269, p. 41. correction studies, intra-atomic, 3773A.

effects in two-and-three electron systems, 5264. experimental pressure-density-temperature and specific heat data for parahydrogen, 5742. experiments in information, and experiments in automatic indexing; training a computer to assign descriptors to documents, 6509. factors for impurity diffusion—Bcc, diamond, and

Fee structures, 5978. factors for impurity diffusion - Fee lattice, 4551. factors influencing the pressures generated in multi-anvil devices, 4552; 5266. function, Gaussian, two-electron systems, 6101. function of a fluid, pair, numerical solutions of the convolution hypernetted chain integral equation, 5523, 5524. function, pair, for a hard sphere fluid, approximations, 5927. functions, nonanalyticty of transport coefficients and the complete density expansion of momentum, 6890. hourly median scattered signals and simple re- fractivity parameters, J 66D3-196, 285 (1962). large longitudinal deformations with different strain histories, J 69A6-377, 541 (1965). matrix for radio waves in the troposphere, 5265. mechanical properties with microstructure, M257,

paper 4, p. 41. monthly median transmission loss and refractive index profile characteristics, J 65D1-104, 67

(1961). muscovite sheet mica on the basis of color, apparent optic angle, and absorption spectrum, J

67A4-220, 309 (1963). observed wavelength shifts produced in electrodeless discharge tubes and predicted stark-effect

shifts in the spectrum of neutral germanium,

5977. phase of microwave signals on the same line-of- sight path at different frequencies, 5267. prediction of thermal conductivity of metals through the application of the principle of corresponding states, 6662. seasonal and diurnal cycles of transhorizon radio transmission loss surface refractivity, a comparative study, J 66D5-219, 593 (1962).

signal color recognition tests, 3379. successive atomic steps in crystals be relaxation mode analysis, J 69A4-350, 301 (1965). thermodynamic properties of cryogenic fluids, 6435. visual and subvisual auroras with changes in the outer Van Allen radiation zone, 4018.

Correlations, annual and short-term, weather and reception level on a troposphere link, J 65D2-113,

155 (1961).

collective and collisional, kinetic equation for plasmas, 4140. motions into night and sporadic E; ionospheric winds, 6164. Oa N2 and He, nucleate and film pool boiling design,

8902.

pair, in closed-shell systems, 6281. plasma oscillations, 5568. Correlator, multichannel, automatic, J 67C1-117, 33

(1963). Corresponding states, correlation and prediction of thermal conductivity of metals, 6662. Corrigendum for Quarterly radio noise data for Technical Notes 18-1 through 18-11, also for the periods March, April, May 1962, TN18-14.

Corrosion, atmospheric, microscopic examination of

nickel coatings, 4366. cracking stress, in copper tubing, 9121. cracking, stress, of metals, 9044. currents, note on a magnetic method of detecting, 4365.

exterior, of cast iron pipe, 6066. fracture, electrochemical-mechanical stress, in a

stainless steel, 6746. investigation in disturbed and undisturbed soils, results of NBS, 8999. rates of aluminum and steel underground, a study by polarization techniques, J 65C4-80, 271

(1961) . rates of, ferrous alloys, measured by polarization techniques, (Fe, Cr and Fe-Cr-Si), 5268; J 66C3-100, 245 (1962).

resistance, 5269. resistance of enamels, by alkaline solutions, 2302A.

soil, 9009.

steel pilings in soils, Mono.58; J 66C3-99, 223

(1962) . stress, cracking in low carbon steel, 3318.

stress cracking of the AZ31B magnesium alloy, J

65C3-67, 165 (1961).

stress, high strength cast aluminum alloys, 4944. type 310 stainless steel by vanadium compounds,

4321. type 310 stainless steel in fuel ash contaminants,

3168. underground, and cathodic protection, soil resis- tivity as related, J 69C1-188, 71 (1965). Corrosive media, fracture, 6085. Corrugated cylinder antenna, resonance excitation, 3692. cylinder excited by a magnetic dipole, 4281. diaphragms, bending and stretching, 3152.

guides, a contribution to the theory, J 64D5-92,

533 (1960).

large, cylinder, radiation from a slot, 3733. Corundum crystals, observations of dislocations and

surface features by electron transmission

microscopy, J 69A3-346, 271 (1965). Cosmic examples of heat conduction in very rare rotat- ing or expanding gases, 3,487. radio noise, high frequencies, use of dual-polarized broad beam antennas to determine the extraterrestrial intensity, 5805. Cosmic noise absorption, moment of geomagnetic storm sudden commencements, 4955. events at geomagnetically conjugate stations, 6663. events, short-duration, in conjugate regions at high magnetic latitude, some observations of, 6375. occurrence of short-duration, events inside the southern auroral zone, 5778. Cosmic noise, ratio of, absorption during polar cap

absorption events, day-to-night, 5743.

noise survey at 65 degrees (N) declination in the

5-50 Mc/s band, 6664. 517
Cosmic-ray cut-off rigidities and the earth's magnetic

field, 8990. increase of July 17, 1959, 3823.

intensity, effect of geomagnetic crochet, 5746. Cosmic rays, solar, 5089.

solar, radio techniques, 4989. Cotton cellulose, spectrophotofluorometric studies, 4930. Coulomb collisions on incoherent scattering of radio waves by a plasma, 6441. scattering without atomic excitation for 50-, 100-, 200-, and 400-keV electrons, 5270. wave functions, AMS55.

Coulometer, silver-perchloric acid, determination of the value of the Faraday, J 64A5-63, 381 (1960). Coulometric calibration of microvolumetric apparatus, J 70C1-214, 1 (1966).

titrations of halides, J 67A1-192, 31 (1963)

.

titrations, precise, potassium dichromate, J 67A5-

234, 453 (1963). Coupled systems, theory of relaxation, 9112.

variables, nonsingular embedding of transition processes within a more general framework, J

65D6-163, 595 (1961). Coupler, directional, sliding short-circuit and an adjustable sliding termination, 6201. Couplers, directional correction to a method for measuring the directivity, 5976.

small, hydrogen retention system for pressure

calibration of microphones, 5393. Coupling constants from quadrupole, microwave spec- trum of hydrazoic acid, 5605.

particle-hole states and two particle-two hole

states: damping, 5979; 5980. polaron, and lattice vibration constants in rutile Ti02 ) , polar modes, 6294. Coupling constants, polaron, in SrTiOs, 8945. proton spin-spin, 4892.

spin-orbit, of nitric oxide. Determination from fun- damental and satellite band origins, 6387. Couplings in a H

nB19 F2, relative signs of nuclear spin, 8988A.

Coulometric titrations, high-precision, special reference

to the determination of uranium, 6778. Cover, finite, numerical analysis of thermal environment

of occupied underground spaces with, using a

digital computer, 6236. Coverage, circular, black box maximization, J 66B4-86, 181 (1962). low surface, adsorption of polymer molecules, 6586. wide spin wave, ellipsoids, ferromagnetic reson- ance relaxation, 6068. Covers and packings in a family of sets, 4553. Crack on the fatigue strength of an aluminum alloy,

effect of fatigue, 9073. propagation and the fracture of concrete, 4019. Cracking in copper tubing, two cases of stress corrosion, 9121. low-carbon steels, studies of the stress-corrosion, J 66C4-110, 347 (1962).

stress corrosion, of metals, 9044.

stress-corossion, type 304 stainless steel at 455 to 615 F, 5705. Crater depth model, regime of partial fluidity, hypervelocity cratering data, 5396. Cratering data, hypervelocity, crater depth model for the regime of partial fluidity, 5396. Creep and drying shrinkage of lightweight and normal- weight concretes, Mono.74.

behavior, factors affecting, age-hardenable alloy, 5672. behavior of structural joints under cyclic loads and temperatures, investigations, 3238. behavior of transparent plastics at elevated temperatures, 3169. cold-drawn nickel, copper, 70 percent nickel-30 percent copper, and 30 percent nickel-70 per- cent copper alloys, J 66C1-88, 59 (1962).

deflection of extruded and rivited Ibeams, 3540.

deflection of structural beams, analytical study, 3430.

polycrystals, nonequilibrium thermodynamics, 6225. pure-gum rubber vulcanizates from indentation- time measurements, 4554. structural joints, 2348A.

studies, crystallinity, and infrared; ethylene-pro- pylene copolymers, 6052. Cresol (2,4,6-trinitro-m-), in water at 25 °C, spectro- photometry determination of ionization constant, J 64A6-78, 533 (1960).

Cristobalite, anomalous inversion, 3814. Criteria for the reality of matrix eigenvalues, 4555. transient decay curves, 3169A.

univalence of transformations of R

n

, 3361.

Critical examination of vibrational energy transfer

theory, 6665.

field, lower, Ginzgurg-Landau theory of superconductivity, 5771.

fields, four, superconducting indium lead alloys, 6080.

flow, continuous-absorption hygrometry with pneumatic bridge, 6657. flow studies related to reactor systems, cryogenic

fluid, 5981. frequency of the ionospheric E-layer on solar zenith angle and the annual variation in Elayer ionization, 6680. isotherm, behavior of the compressibility, 8911. opalescence of polystyrene solutions, 4556. point phenomena, 6666.

point, validity of the Lorentz-Lorenz equation,

8922. review of sugar color and turbidity measurements,

4557. Crittenden, E. C, physical standards expert, 1665A.

Crochet, geomagnetic, on cosmic-ray intensity, 5746. Cross modulation, TN325.

modulation, ionospheric, a discussion of the theory, J 68D10-410, 1109 (1964).

piles of wood, experiments on the burning, J 66C2-

90, 99 (1962).

section, measurement of the, elastic scattering of slow electrons by hydrogen atoms, 5467.

section, photonuclear, analysis, 3137.

section, torsional resonance vibrations of uniform

bars, J 65A3-99, 167 (1961).

Cross-sectional correction for computing Young's modulus from longitudinal resonance vibrations of square and cylindrical rods, J 66A2-

153, 193 (1962). Cross sections, electromagnetic, for electron and nuclear research, 6023.

sections of carbon, photoproton, 3281.

sections, ^-ionization, for relativistic electrons, 6172.

sections with various relations obtained from SU3 , comparison of experimental reaction, 5961.

total photonuclear, low atomic number elements,

9117. Crossings (Zeeman level), hyperfine structure of Hg103 *, Hg106

, and Hg106 *, 6786. Crosslinked polycaprolactam systems, ultraviolet stability, J 66A6-184, 489 (1962). Crosslinking of polymers induced by excited species, 4558. Crossnorm, the greatest, J 68B4-130, 185 (1964). Cryogenic adhesive properties of bisphenol-A epoxy

resins, 4021.

applications, multiple layer insulation, 4184. behavior of selected magnetic materials, J 69C3-

203, 225 (1965).

coil for megajoule energy storage, 6667. data center, 3824. electromagnetics, electrical properties of aluminum, TN218.
equipment, cool-down of, liquid requirements, 5450. equipment, processes, modern methods af analysis

for design, 6216.

fluid, two-phase critical flow studies related to reactor systems, 5981.

fluids and their mixtures, Kihara parameters and

second virial coefficients, 5434.

fluids, correlation of thermodynamic properties, 6435.

fluids, bibliography of experimental saturation

properties, TN309.

fluids, flowing, solid formation, 5662.

fluids, heat transfer from solid surfaces to, survey

of the literature, TN122 (PB161623).

impurity adsorption from hydrogen, 3488.

insulation, 3171.

insulation, new steady-state calorimeter for measuring heat transfer, 5880.

insulation, perlite, 5559.

liquid level measurement, carbon resistors, TN200. magnet application, pulsed refrigeration system,

6558. piping system design and insulation, 3489.

propellants, recommended materials and practices, 8985. refrigeration systems, a miniature helium turbo- expander, 5143. refrigeration systems, Joule-Thomson process, TN227.

seals, static, recent developments in using elas- tomers, 6338.

service, considerations when using turbine-type

flow-meters, 6656. solvents at high pressures, thermodynamics of hydrogen solubility, 6505. systems, binary, an apparatus to determine the solid-vapor equilibria, 5190. systems, pressure measurements, 5592. systems, review of static seals, 6350. temperature measurement with platinum resistance thermometers—is fixed-point calibration ade- quate? TN147 (PB161648).

temperatures, design of static elastomeric seals, 5983. temperatures, dry gas operation of ball bearings,

4610. temperatures, elastomers, 4980. temperatures, elastomers for statis seals, 4054. testing of structural solids, 4559. transfer lines, air dielectric coaxial cables, 5180. Cryogenic engineering, advances, 5630; 5904. hydrogen bubble chambers, 3170. recent progresses, 5632. temperature measurements, 5727. Cryogenics, 3171A; 6077A.

cavitation problems, 3457A.

current trends and prospects, 4562. expanding mechanical engineering, 6156. NBS Boulder Laboratories, world of cryogenics,

9105. nuclear physics, 4020. operational information retrieval system in the

field, 5194. pressure-density-temperature relations of freezing

liquid parahydrogen to 350 atmospheres, 5590. production of high and ultra-high vacuum, 6476. space technology, 6668. world, 9105. Cryometric impurity determination, principles of, as applied to samples of small sizes, J 68C1-150,

35 (1964). Cryometry. dielectric, chemical purity by, J 67A6-247,

607 (1963). time-temperature, purity analysis of highly purified materials, J 67A3-212, 247 (1963). Cryopump, some characteristics, 5669. Cryoscopic analysis, TN273.

Cryostat, He', performing experiments with oriented

nuclei, 5134.

rotating, cryostat for mixing reactants at 4.2 °K,

3998.

tensile temperature range 4° to 300°K, 4340.

tensile tests in the temperature range 300° to 4°K,

4420. X-ray diffractometer, providing temperature control in the range 4 to 300 °K, J 65C4-75, 225

(1961). Cryo-surface, analysis of the frost phenomena, 5917.

controlled atmosphere, heat transfer between, 4676. Crystal and molecular structure of C'BmHs!, bis(o- dodecarcarborane) , 6669. chemical implications, x-ray diffraction studies, 3914. copper single, surfaces in pure water, oxide films, 3343.

field approximation, nature of, TN67 (PB161568) ; 5536; 4206.

field theory, validity of, as applied to rare earth

ions, 5809.

habit, solvent effect on: growth of oxalic acid

single crystals, 6106. imperfections in magnesium fluoride, 6672.

lattices, disordered one-dimensional harmonic, numerical computation of time-dependent properties of isotopically, 5522. molecular structure of iodopentaborane-9, 9064. point defects, trapped, relaxation modes, J 67A4-

217, 291 (1963). point defects, trapped, relaxation modes of, the three-neighbor model in NaCl, J 68A5-290, 425

(1964). potassium, vapor phase, 4674.

single, corundum from 77°K to 850° K, Young's

modulus, 4414.

single, Th02 at 25 °C, elastic constants, 6016.

single, x-ray diffraction at high pressures, J 69C4-

208, 275 (1965).

studies, high pressure single, of ice VI, 6779. surfaces in water, oxide films formed on copper

single, III. Effect of light, 6468. synthetic single, corundum at room temperature,

elastic constants, 3514. synthetic single, sapphire and ruby as a function

of temperature and orientation, 3317. two, scintillation pair-spectrometer, 6516. whiskers, K and Hg, growth and evaporation

kinetics and surface diffusion, 5378. Crystal growth and characterization at NBS, TN174; TN197; TN236; TN251; TN260.

chemical research, 6671. comparative fixation of Sr89 and Ca46 by calcified tissues, 4046.

single, from aqueous solution, equipment, J 67C1-

116, 25 (1963). thermal etching of argon, 6670. Crystal structure of barium tetraborate, BaO-2B203 , 9065. gamma-dicalcium silicate, 6673. NaB (OH) 4 «2H20, direct determination, 5745.

1-ethyl decaborane, 6436. Crystalline alkali halides, modification of the Born- Mayer potential function, 5145. amorphous tetrahedral networks, 5870. argon and nitrogen and liquid, vacuum ultraviolet absorption spectra of oxygen, 6523. basic calcium orthophosphate ( hydroxyapatite )

,

3490. ceramics, fraction mechanisms, Mono.59, p. 63. inorganic borates, infrared spectra, J 68A5-294,

465 (1964).

liquid krypton, NO, spectroscopic absorption, 5682. polymers in relation to degree of crystallinity and

morphology, dielectric and mechanical relaxation, 6202. 519
rare gases, absorption spectra of diatomic molecules in liquid, 5901. resonances and sound velocities using NMR tech- niques, ultrasonic determination, 9124.

size distributions from x-ray line broadening,

calculations, 5218.

solids, pastic flow and fracture, Mono.59, p. 1. Crystallinity and morphology, dielectric and mechanical relaxation of crystalline polymers, 6202. infrared, and creep studies; ethylene-propylene copolymers, 6052. kaolins of varying degrees, 4641.

Crystallite size distribution from X-ray line broadening,

4034.

Crystallization, anhydrous copper sulfate from sulfuric acid-ammonium sulfate mixtures, J 68A3-278, 313 (1964). bulk polymers with chain folding: theory of growth

of lamellar spherulites, J 65A4-114, 297

(1961). mechanisms, 4153. polymer with chain folds, theoretical aspects: bulk polymers, 6493. polymers, sequence selection problem, 5796. rate-temperature curve for, isothermal, poly- pentene-1, measurement of a maximum, 5465.

spherulitic, chain folds in polychlorotrifluoro- ethylene, 4878.

spherulitic, of isotactic polypropylene from solu- tion : On the evolution of monoclinic spherulites from dendritic chain-folded crystal precursors, J 70A1-385, 29 (1966). temperature, dependence of the melting temperature of bulk polymers, 3825. temperature, x-ray study of isothermal thickening

of lamellae in bulk polyethylene, 9146. Crystallization kinetics and polymorphic transformation in polybutene-1, J 69A4-353, 335 (1965). high polymers, 983A.

natural rubber, effect of hydrostatic pressures, 5309; 5747. polymers, 4616. Crystallograph, X-ray, study of Schroeckingerite and

its dehydration product, 3134. Crystallographic changes with the substitution of aluminum for iron in dicalcium ferrite, 5271. orientation on pitting of iron in distilled water,

3232. Crystallography of some M=+ borates, 6437. tetracalcium phosphate, J 69A6-378, 547 (1965).

Crystals, anhydrous single, rare-earth halides, preparation, J 67A4-223, 343 (1963). argon, growing, 4922. atomic energy levels, Mono. 19. centerable rotator for measuring properties, J

69C3-198, 191 (1965). ceramics, strength, Mono.59, p. 79. characterization of large single, by high-voltage X-rav Laue photographs, 5738. copper, TN321 ; 4298.

dielectric constants of Cr2 0.i, 5291. harmonic, containing isotopic defects momentum

autocorrelation functions and energy transport, 5494.

ionic, 4720.

ionic, drift mobility and diffusion for impurities,

6709.

ions in, theory of the electronic polarizabilit ics, 5814.

isotopically disordered, nonequilibrium, 4195. large anticoincidence sodium iodide, high-energy X-ray spectrometer, 3566A.

large single, high voltage Laue X-ray photography,

6117. low electrical resistivity, preparation of copper,

8956.

mercury and potassium, vapor-phase growth

kinetics, 6526. molecular, impurities, intermolecular forces from

optical spectra, 3584. molecular, theory of dielectric relaxation, 3352.

oxide, symmetry splitting of equivalent sites, re- lated mechanical effects, J 67A4-216, 281

(1963). point defects, 4964. polymer, dislocations, J 68A5-297, 513 (1964). polymer, with folded chains from dilute solutions, 3213A.

quartz, at low temperatures, 3288C.

relaxation mode analysis, correlation of successive atomic steps, J 69A4-350, 301 (1965).

rutile, grow by flame-fusion methods, dislocations and stacking faults, 6701. 77°K, second order effects in the phosphorescence

of benzophenone, 9003.

silver single, in fused sodium chloride, 4958.

single, solution polishing, 9013.

solution, growth of oxalic acid single: solvent

effect on crystal habit, 6106.

studies on the characterization of solution-grown ADP, 8955. synthetic corundum, electron microscopy and dif- fraction, 6730. thinning, for transmission electron microscopy,

4578.

uniaxial, ray-tracing formulas, 4880. Cs+ and Ba+ from rhenium, kinetics of desorption,

5435. desorption from tungsten, 5015. Cubic lattices, simple statistical dynamics, 4313. lead flouride at room temperature, elastic constants,

6720.

statistical dynamics, 3793. CuFer,08 , constitution, 9062. Culverts, pipe, tapered inlet structures, 6422. Cumene, toluene, and ethylbenzene, 5788. Cupferron, separation and determination of zirconium

in zirconia yttria mixtures by precipitation, 6362. Cupprammonium and diols, complexes, 3480. Cupric sulfate pentahydrate, spin-lattice relaxation

time, 6796. Cuprocyanide complexes, 6688. Current densities with a resistive cathode, method of

densities obtaining a range, 6865. development in an electronically scanned antenna,

5272.

direct, electroless passage of, through an electrolyte, 3517.

direct, resistance appratus, calibration procedures, Mono.39.

electric, across a liquid junction, measurement of the reversible heat, 6020. impedance: half-wave cylindrical antenna in a

dissipative medium, J 64D4-70, 365 (1960).

infinite cylindrical antenna, asymptotic behavior, J 67D4-277, 417 (1963). input impedance of a cylindrical antenna, J 66D1-

170, 15 (1962).

limited rectifiers, 4560. measurements, pulsed and CW sinusoidal voltage, 6322. meter, D-C differential, 4039. NBS work on properties of parahydrogen, 6414. potential relations for the cathodic protection of

steel in a high resistivity environment, 3491. programs in the U. S. Department of Commerce

for advancing state science and technology,

6674.

ratio standards at audio frequencies, international comparison, 6594. research on preservation of archival records on 520
silver-gelatin type microfilm in roll form, J

69A5-359, 385 (1965).

revision of the solar spectrum table 2935 A to X8770 A, 9066. status of graphic storage techniques: their potential application to library mechanization, 6438. status of the statistical theory of mass spectra, 4561. surface, type II superconductors, 6412. thermodynamic research on light-element com- pounds at NBS, 3492.

topics in the stochastic theory of radiation, J 68D9-

398, 989 (1964). transformer standards for audio frequencies, the design and performane of multirange, 9068. trends and prospects in cryogenics, 4562. 0.05%, regulation of ionization gauge emission,

5633. Currents, charges, and near fields of cylindrical antennas, J 69D3-481, 429 (1965)

.

gas discharge tube, numerical computations of the temporal development, J 67B1-92, 41

(1963). induced on the surface of a conducting circular cylinder by a slot, J 66D3-201, 335 (1962).

observed, galvanic, during outdoor exposure of an

iron-nickel cell, 5369. Curvature of wavefronts in an optical system, 6181. Curved boundary which contains an obstacle, 5127. vortex and motion of an elliptic vortex ring, localized-induction concept, 6832. Curves, analysis of families, J 67A3-214, 259 (1963). CO and CO% potential-energy, 8949. evaluation of precision of analytical methods in- volving linear calibration, which measure of

precision, 6537. ground proximitv loss for dipole antennas, TN175;

J 67D5-289, 567 (1963). ground waves propagation over mixed land and

sea paths, 5273. input impedance change due to ground for dipole antennas, Mono.72. Cusp, 6532. "Cut-off rigidities and the earth's magnetic field, on

the cosmic-ray," 8990. CW and pulsed sinusoidal voltage and current measurements, 6322. Cyanamide, microwave spectrum and nonplanarity,

4769. vibration-rotational interactions 5122. Cyanate ion in various alkali halide lattices, vibrational spectrum, 3368. Cyanide, C

1, -labeled, determination of reducing end- groups by reaction, 6686. deuterium, and hydrogen cyanide, vibration-rotation bands, 6529.

ethyl, microwave spectrum and internal rotation, 3258. hydrogen, and deuterium cyanide, vibration-rotation bands, 6529. tertiary butyl and tertiary butyl actylene, micro- wave structure determinations, 4771. Cyanoacetylenes and cyanogen, mass spectrometric

study, 4162. Cyanogen azide, matrix-isolation study of the photolysis, 6850. bromide, 5123. cyanoacetylenes, mass spectrometric study, 4162.

halides, electron impact study, 3523. Cyanohydrin synthesis, TN274.

Cycle, peak of the solar, the total electron content of the ionosphere content at middle latitudes, 5806.

Cyclic groups, free products, 4918. loads and temperatures, creep behavior of struc- tural joints, investigations, 3238.

polyhydroxy ketones, J 67A2-202, 153 (1963); J

68A3-275, 287 (1964) ; TN274.

sums, minima, 3849. Cyclobutane at photon energies below and above the

ionization energy, photolysis, 8940. Cyclohexane-l,3-diols, structure, 4982. Cyclohexane, far ultraviolet, 6770; 9080.

ion, modes of decomposition of the neutral excited cyclohexane molecule and reactions of the parent, 9080.

ion, parent, modes of decomposition of the neutral

excited cyclohexane molecular and reactions: gas-phase photolysis of cyclohexane in the far

ultraviolet, 6770. molecular, neutral excited, and reactions of the parent cyclohexane ion, modes of decomposition

of: gas-phase photolysis of cyclohexane in the far ultraviolet, 6770. molecule and reactions of the parent cyclohexane

ion, modes of decomposition of the neutral

excited, 9080. Cyclohexene, decyclohexene of, 4-methylcyclohexene and 4-vinyl-cyclohexene in a single-pulse shock

tube, 6676. Cyclonols, application of NMR in determination of the structure of cyclonols, 4982.

Cyclopentitols, synthesis by aldol condensation, TN274.

Cyclopropane, photolysis, xenon resonance lines, vacuum

ultraviolet photochemistry, 5840. Cyclotron absorption of whistlers and VLF emissions, anisotropic electron velocity distribution, J 69D11-573, 1403 (1965). harmonic waves in warm plasmas, J 69D6-512,

789 (1965). resonances in slightly ionized gases, 5274. Cygnus-A observed at Boulder, Colo., amplitude and

angular scintillations of the radio source, J

65D4-137, 333 (1961). Cylinder, corrugated, antenna, resonance excitation, 3692. corrugated, excited by a magnetic dipole, 4281. functions of large argument, error bounds for asymptotic expansions, 6049.

functions, parabolic, AMS55.

growing in a diffusion field, stability of the shape

of a solid, 9034. hollow, heat flow in a, rotating in a furnace with

a viewing port, 5558.

joints and ball-and-socket joints, vacuum-tight,

5839. large corrugated, radiation from a slot, 3733. note on the radiation conductance of an axial slot, J 69D3-482, 447 (1965). right circular, heat flow in, with arbitrary temperature boundary conditions—applications to the determination of thermal conductivity, J

68C4-166, 215 (1964). theorv of diffraction by a composite, J 65D1-99,

19 (1961). two-layer liquid system, disturbances due to the motion of a cylinder, J 64C3-42, 241 (1960).

Cylinders, arbitrarily illuminated, reactive loading: of, to minimize microwave backscatter, J 69D11-

581, 1481 (1965). multiple continuous line heat sources, steady state heat conduction, J 67C2-125, 119 (1963). two intersecting, common volume, J 69C2-193, 139

(1965).

Cylindrical antenna, current on and input impedance, J 66D1-170, 15 (1962). antenna theory, J 64D5-95, 569 (1960).

cavities, shallow, test of analytical expressions for thermal emittance, 6570. generating, shock waves in a controlled atmosphere,

wire expoloder, TN148 (PB161649). 521
obstacles, propagation at oblique incidence, J 64D4-

63 311 (1960). Shock waves, 4767; 4852.

spherical, and plane shocks, strong blast waves,

4319.

structures, electromagnetic radiation, 3199. three-terminal capacitors with thin dielectric films on their electrodes, results on the cross-capacitances per unit length, 3773. Cylindrically stratified plasma, transverse propagation

of electromagnetic waves, 6511. Cytherian and Martian ionospheres, a theoretical study of, 5893. Czerny-Turner spectrometer, optimization, 6276. D

D-atomic spectra, report of subcommittee, 8991. B-erythro, 5290. D-erythose, 5290.

D-gluco, 5290. D-glucono-1, 5-lactone, and lactobiono-1, 5-lactone, lactonization of aldonic acids, 5440. D-Glucose, 4580.

_ oxidation, with iodine, 4572. 6-C14 and L-idose-6-C14

, 4579.

D-glucose-6-i, D-xylose-5-f, and D-mannitol-l-t, tritium

labeled compounds IV, J 64A4-60, 359 (1960). D-Glucose-3-14 C, synthesis of, and related compounds,

J 69A6-376, 535 (1965). D„ HD, and H„ II., 6845. D-layer characteristics and VLF propagation, relation between, 6473. D-mannitol-l-t, D-glucose-6-t, and D-xylose-5-i, tritium

labeled compounds IV, J 64A4-60, 359 (1960). D-manno-3-heptulose by alkali, isomerization, 6455. D-mannose-1-6 phenylhydrazone, 4721. DNCO and HNCO, low temperature infrared study of intermediates in the photolysis, 6184. D region, TN 325. absorption at 10 and 15 Mc/s during the total solar

eclipse of July 20, 1963, J 69D7-527, 939

(1965).

electron density profiles during auroras, 6001. high-altitude nuclear explosion of July 9, 1962, 6182. scattering at VHF, frequency dependence of, J

65D5-146, 417 (1961).

self distortion of radio signals, J 69D3-472, 367

(1965). D-region of the ionosphere, physical processes, 6289. very low frequency phase observations of solar

flare ionization, 5849. very-low-frequency phase observations, studying

the lunar tidal variations, 5713. DS S, and H2 S, HDS, mass spectra and metastable transitions, 5459.

D-talose, 4611.

D-xylose-5-i, D-mannitol-l-i, and D-glucose-6-t, tritium

labeled compounds IV, J 64A4-60, 359 (1960). Damping effects, relativistic, and electromagnetic wave

propagation in a uniformly magnetized elec- tron-positron gas, 6727. giant resonance in heavy nuclei, 6675. Landau, collective correlation, 4726. Danger from the sky, 676A. Dark filaments, associated active, relation to 2800-Mc/s

radio bursts, solar flares, 6368. Data, analysis, radio propagation data, statistical the- ory, J 66D5-217, 571 (1962). aperture field, measured, Fresnel zone diffraction

effects at 50 Gc/sec, 5367. automatic, processing, trends in the technology,

3892.

charts, climatic, radio refractive index for the United States and the world, Mono.22.

coherent X-ray scattering, diamagnetic nuclear

shielding constant and to the self-energy of the charge distribution of the scatterer, sun

rules, 5714. compilation and review at the NBS, thermodynamic, 6503. compilation, systematic, NSRDS-NBS1.

computation techniques, TN286.

experimental, statistical analysis, 6480. formulas and related, bremsstrahlung cross-section, 3154. fundamental spectroscopic, 6772. geomagnetic and solar, 5377. handling system for the NBS LINAC, on-line, 6245.

heat, pressure-density-temperature and specific, for

^ parahydrogen, correlation experimental,

hypervelocity cratering, crater depth model for the regime of partial fluidity, 5396. instrumentation, transistorized building blocks, TN68 (PB161569); TN268.

microwave tubes, tabulation, H70.

national standard reference, program, TN194:

6220. numerical methods, representation of diurnal and

geographic variations of ionospheric, 8993. obtained with the silver-silver chloride electrode

in methanol water solvents, standardization of

analytical, 9036. program, National standard reference, TN194;

6220. quest for design, 6471. radio noise, TN18-3 to 18-13 (PB151377-3 to PB151377-13) and TN18-14 to 18-26. reduction for stable auroral red arcs observed

at Rapid City, South Dakota, TN308.

reduction instrumentation for radio propagation

research, TN111 (PB161612).

retrieval, TN290.

solar and geomagnetic, 5377; 6103. system, national standard reference. Plan of operation, NSRDS-NBS1.

temperature, very low, properties of paramagnetic

salts, 5853. weathering, on aluminum alloys, 5731. Weissfloch-Feenberg node-shift technique, automatic method, 6591. Data processing and synthetic aperture antennas, J

68D4-359, 446 (1964). automatic antenna, bibliography, J 64D6, 96, 743. automatic method, instrument recall and recycling

analysis, M248. p. 217. capabilities in the Soviet Union, 4541.

control of instrument maintenance and calibration, M248, p. 233. influence of, on the design and communication of experiments, J 68D9-402, 1021 (1964). system for the automatic transformation of ob- served plasma intensities into their radical

distribution, 5982. U. S. Air Force — U. S. Navy — National Aeronautics and Space Administration — statistical loads program, 3172. Daughter products in weathered granite and uraniumbearing sandstone, fractionation of uranium

isotopes, 6084. Daylight as a function of correlated color temperature (condensed version), spectral distribution, 9027. hours, evidence of a stratified echoing region at 150 km in the vicinity of the magnetic equator during, 6055. Days program, world, 6539. 522
Daytime attenuation rates in the very low frequency band using atmospherics, J 64D4-68, 349. equatorial F-layer, 6439. L Day-to-night ratio of cosmic noise absorption during

polar cap absorption events, 5743. D-C comparators, calibration of A-C, 6623.

dielectric conductance (reciprocal resistance) and

conductivity (reciprocal resistivity) measurements, 6697.

differential current meter, 4039.

digital voltmeters, 3928. measurements, high-voltage, shielded resistor, J 66C1-83, 19 (1962). power regulator, 3425. DC-RF substitution error in dual element bolometer mounts, 5871. DC1 by HC1 and HC1 by DC1, pressure broadening,

6311. D-D neutrons in heavy water, age to indium resonance,

3965.

reaction, energy dependence at low energies, J 68A6-317, 675 (1964). source in water, fast neutron dose measurements, J

68A1-250, 1 (1964).

sources, calculations of the neutron age in water and heavy water, 3990. Deactivation, collisional, excited ethylene, 9129. Hg(6°PI ) by Co and N2 , 4563. Debye-Huckel potential, bound states, 5936. Debye temperature of silver iodide, x-ray determination, 5914. Decaborane, heat of formation, J 64A6-75, 521 (1960).

1-ethyl structure, 6436. Decameter-wave radar studies of the lunar surface, J

69D12-619, 1659 (1965). Decametric radio emissions of Jupiter, J 69D12-583,

1513 (1965). Decarbonization, controlled, performance of service synthad, 3196. Decay and formation of atoms and small free radicals at low temperatures, 4662.

curves, transient, criteria, 3169A. quanta in gas lasers, breadth, 6615. simple exponential, in vibrational relaxation, 6606. synchrotron radiation, further observations, 6095. Decays in U(12), W-r,pin analysis, 9142. Decibels return loss to magnitude of voltage reflection

coefficient, 4022; 4564. Declination, 65 degrees (N), in the 5-50 Mc/s band,

cosmic-noise survey, 6664. Decoding method, single, cyclic codes, combinatorial problem, 5867. Decolorization by adsorption, J 66A6-186, 503 (1962) ; J 67A6-248, 615 (1963). column, experiments with theory, comparison,

3162. Decomposable differential operators, fundamental solu- tion and Huygens' principle, 9079. Decomposition formula, theory of elasticity, J 65B2-

54, 151 (1961).

linear, pulsed time-of-flights mass spectrometer,

observation of the products of ionic collision processes and ion, 8905. multiply charged ions into singly charged frag- ments, direct observation, 6698. w-propyl radical, 4225. neutral excited cyclohexane molecule and reactions

of the parent cyclohexane ion, modes, 6770:

9080. some alkyl halides by a shock-tube, 6499. thermal, some tert-butyl compounds at elevated temperatures, 6500. thermal, 2, 3-dimethylbutane in a single-pulse shock tube, 9108. Decompositions of the parent ion and neutral excited pentane molecule. Gas-phase radiolysis of n- pentane, 6100.

Decoration of dislocations, aluminum oxide, 5744. Decrease, anomalous, elastic moduli at very low temperatures in some 300 series stainless steels, 6590. Decyclization of cyclohexene, 4-methylcyclohexene and

4-vinyl-cyclohexene in a single-pulse shock

tube, 6676. Dedekind sums, generalized, 6378.

table, J 69B4-155, 259 (1965). Deep penetration of radiation (nuclear reactor theory),

4023. L

Defects, isotopic, harmonic crystals containing, momentum autocorrelation functions and energy

transport, 5494.

lattice, electron energy levels and their relationship, reduced rutile, 5327.

point, internal friction in rutile, 6148.

Definition, atomic, unit of time, 6374. alginate impression materials, 9067. "ampere" and "magnetic constant," 6677. measurements, long-term, short-term stability, 6013A. mismatch loss, should the conventional one be

abandoned, 6365. Definitions and formulas, electron properties of solids, 5333. Hall effect devices, standardization, 6394. relating to metals and metalworking, 4024. Defocusing of radio rays by the troposphere, J 66D4-

209, 479 (1962). Deformation of rubberlike network polymers, 4727. nuclear 2* -pole, possibility of the measurement,

6258. retarded elastic, large longitudinal, of rubberlike network polymers. II. Application of a general formulation on nonlinear response, 5442. Deformations, large longitudinal correlation, different strain histories,., J 69A6-377, 541 (1965). Deformed bars of different yield strengths, shear

strength, of beams without web reinforcement

containing, 5654. Deformed copper, dislocation loops, 4597. observations and dislocation loops, 5527. Degradation, colorimetric method for measuring polyester, due to weathering, 5129. mechanical shear, concentrated polymer solution energy requirements, 3530. photochemical, incertain plastics by color reactions with phenylenediamines, measurement, 6199. poly- (2,3,4,5, , = pentafluorostyrene) , 4025.

polyester, due to weathering, colorimetric method

for measuring, 5239. polymer (by heat, oxidation, and radiation) , in unsolved problems in polymer science, 4847. polymers, 4566. thermal, organic polymers, 6501. Degree of crystallinity and morphology, dielectric and

mechanical relaxation of crystalline polymers

in relation, 6202. metamerism, 6681. Delay time of polar-cap blackout and its relation to delay time of geomagnetic disturbance, 5275. Delayed ionospheric changes during twilight: conju- gate observations of solar proton events, 6655. Delocalized versus localized pictures in resonance energy

transfer, 5276. Demagnetization, adiabatic, of chromium methalamine,

alum, 641A.

factors for oblate spheroids used in ferrimagnetic resonance measurements, TN221.

simple adiabatic, apparatus, 4288. Demineralization, exploratory research, 3540A.

Demonstration, color perception with abridged color- projection systems, 3380.

fluorometric, tryptophan in dentin and bone protein, 6076. 523
Dendrites, electrodeposited copper, growth twins and

branching, 6108. electrodeposited copper, pseudopentagonal twins,

6321. structure of electrodeposited lead, 9048. Dendritic crystals of polypropylene, evolution of monoclinic spherulites, J 70A1-385, 29 (1966). Dense gas, moderately, density expansion of the vis- cosity, 6679. gases, solubility of solids, TN316.

plasmas by application of line broadening theory, 4751.

Densities, current, with a resistive cathode, 6865. lowest ionosphere, height distribution of ratio of

electron and negative ion, 6253. saturated liquid hydrogen, 4347. Density, bulk, boiling liquid oxygen, 4804; 5346.

discrete auroral forms in the E -region, determination of the electron, 8913.

distribution of polymer segments in the vicinity of an absorbing interface, 6678.

electron, exospherir 4419. Density, electron, profile analysis of topside sounder

ionograms, 6025. expansion of momentum correlation functions, nonanalyticity of transport coefficients and

the complete, 6890. expansion of viscosity of a moderately dense gas, 6679. expansion, transport coefficients of gases, 5477. expansivity of alkali borates and density characteristics of some other binary classes, 682A.

flowing fluids, instrument for continuous measurement, 5413.

fluctuations and heat conduction in a pure liquid, 4026.

flux, thermal-neutron, standard of the NBS, inter- comparisons, 5417. generalized master equation for quantum-mechanical systems, 6102. ionosphere, continuity equation for electron, 8912. magnetosphere, measuring plasma, 5470. matrix: monatomic molecules, 4719. measurement of silicon, J 68A5-299, 529 (1964). measurements, electron, magnetically confined arc, 6728. monthly electron, profiles for the ionosphere, 3409. polyethylene crystals grown from solution, J 70A3-

397, 221 (1966).

profiles during auroras, d-region electron, 6001.

profiles, equatorial electron, 5000 KM, using the in- coherent scatter technique, 5336.

profiles, F-region electron, at Puerto Rico, night- time variations, 6222.

radiolysis of ethane, effect of electrical fields, 6713.

viscosity of boron trioxide, 9132. Density-temperature-pressure relations, of freezing

liquid parahydrogen to 350 atmospheres, 5590. Dental alloys and cement: x-ray spectroehemical analysis of materials, 9145.

alloys, noble metal, x-ray spectrometric analysis, J 68A1-251, 5 (1964). amalgam associated with strain release in the

silver alloy particles, dimensional changes,

6694. amalgam, effect of loading, time of trituration and

test temperature on compressive strength, 5312. amalgam made from spherical alloy particles, 4864.

filling materials, gallium-palladium alloys, 6098. gold alloys, noble metal content, procedure of the determination, 3724. gold castings, surface roughness, 4334. impression materials, physical properties of synthetic rubber-based, 3713.

inlay casting, 4286. interferometer, simple device for adjusting, 6560.

plastics, market, 6292. radiographic film, dental X-ray apparatus, 3117. radiographic film, standards, 5692.

restorations, properties of a silica-reinforced poly- mer, 5600. rotating diamond-abrasive, instruments, methods, 2197A. X-ray apparatus and dental radiographic film, 3117. Dental materials, 4476. American Dental Association specifications, 3420.

clinical applications of research findings, 3304. new developments, world-wide survey, 6884. 1956-1958: a review, 3493. 1964-1965, guide, 6109. therapeutic agents, composition, work and inter- relation, 6647. Dental research, cooperative, between the Federal Government and the American Dental Association at NBS, some activities of, 6373.

last 25 years, developments in, 2301A. NBS, forty years, 3547. opportunities, 3696. pioneer in, 5860. Dentin, bone protein, fluorometric demonstration of trytophan, 6076. enamel and fluorapatite improved by the use of a surface-active comonomer, 6581. improved by pretreatment and the use of surfaceactive comonomer, 6582. promoted by a surface-active comonomer, 6583. Dentistry, gold, 6105. horizons, 4683. Denture base materials, clinical evaluation of complete dentures made of eleven different types, 6637. base materials, organic, some physical properties,

5676. dimensional changes, 4587. method of evaluating the clinical effect; case

report, 3253.

reliners-direct, hard, self-curing resin, 7174. Dentures, artificial, dimensional changes, 3184. changes, during storage in water and in service, 3993. complete, changes in occlusion, caused by a pipe

habit, 5228. complete, made of eleven different types of denture base materials, clinical evaluation, 6637. complete, strain release, 5703. dimensional changes, drying, wetting, and heating

in water, 4586. dimensional changes, during processing, 3504. made by different processing technics for the same

patient, pre^sure-indicator-paste patterns,

8958.

resins and technics used in constructing, 8995. self-curing resins for repairing: some physical

properties, 1484A. Department of Commerce for advancing state science and technology, current programs, 6674. Departure from the Saha equation for ionized helium.

I. Condition of detailed balance in the reso- nance lines, 4027. from the Saha equation for ionized helium. II. Atmospheric thicknesses too small to satisfy detailed balance in the resonance lines, 4028. from the steady state in two-intermediate enzyme

reactions. 4565. Dependence, absorption coefficients, area of the ab- sorbent material, 5531. Dependence, concentration, sedimentation coefficient of polystyrene in dilute solution, 6433A.

critical frequency of the ionospheric E-layer on 524
solar zenith angle and the annual variation

in E-layer ionization, 6680.

electrical conductivity and the thermoelectric power

of pure and aluminum-doped rutile on equi- librium oxygen pressure and temperature,

5278. energy, photodetachment of I near threshold, 6039. energy, proportional-counter fast-neutron dosi- meters, 5335.

interval between flare and associated sudden com- mencement-storm on pre-storm conditions, 4567. ionospheric F region on the solar cycle, 4568. Jupiter's decimeter radiation on the electron dis- tribution in its Van Allen belts, J 69D12-589,

1557 (1965). mechanical relaxation on morphology in isotactic polypropylene, J 68A5-298, 519 (1964). mechanical strength of brittle poly-crystalline specimens on porosity and grain size, 3175. melting temperature of bulk homopolymers on the

crystallization temperature, 3825. power output of a gas laser on the length and rate

of excitation of the discharge, 5277. pressure, internal field at the ro Co nucleus in a 99.5% Ni-0.5% C alloy, 8957.

rate, in a solarizing commercial x-ray emulsion,

6333. superconducting transition temperature on carrier concentration in semiconducting SrTiC-3, 6682. Dependent-concentration diffusion coefficient of water

in glass, 5256. Depleted region in the ionosphere by chemical releases, formation of an electron, 6078; 6079. Depolarization, optical, scintillation measurements over

a terrestrial path, 6269. Depolarizers, inorganic, photopolarographic behavior, J 69A6-372, 517 (1965).

Deposition, argon, 4.0 °K surface, 3141. gases at 4.2 °K, TN73 (PB161574).

iron from salts of fluoro-acids, 4030. metals from the vapour phase and similarity of the process to electrodeposition, 4029. Depression-angle and polarization dependence of radar

terrain return, J 64D5-83, 483 (1960). Depression, ionospheric, finite extent, phase changes

in very-low-frequency propagation, 6247. Depth model, crater, regime of partial fluidity hypervelocity cratering data, 5396. Derivation, convergent kinetic equation from the generalized master equation, theory of irre- versible processes in plasmas, 6495. electron density profiles in the lower ionosphere using radio absorption measurements at multiple frequencies, 5279. elementary, time-correlation formulas for trans- port coefficients, 6036. Faxen solution to the Lamm equation, 5886. relaxation spectrum representation of the mechanical response function, J 66A4-170, 349

(1962) ; 4421. Derivatives, butadiene, microwave studies, 4772; 6214.

first, Bessel functions of the first kind, J'n (x), 21<n<51, 0<x<100, zeros, J 67B3-102, 181

(1963) . 2, 2' (phenylimino) diethanol, 5670. Derived, heats and two carbon positions of formation

of several alkyl radicals, relative rates at: hydrogen atom addition to olefins, 6785.

sferics, lightning characteristics, 6829.

solutions behavior of aqueous suspensions, surface composition of hydroxylapatite, 6485. Description, analysis of the second spectrum of tanta- lum, Ta II, J 66A2-146, 111 (1962).

analysis of the third spectrum of cerium, 6683.

continuum, high temperature plasma, 5973. normal subgroups of genus one of the modular

group, 5869. Descriptors to documents, training a computer to as- sign; experiments in automatic indexing and

experiments in information correlation, 6509. Design and operation of the ceilometer computer, TN64 (PB161565).

Design and performance of multirange current trans- former standards for audio frequencies, 9068. automatic optical, 5932. console for the comparison of volt boxes, 6119. construction, and performance of a laboratorysize helium liquefier, 3494. correlations for 02 N2 and He, nucleate and film pool boiling, 8902.

data, quest, 6471.

data, spot diagrams for the prediction of lens per- formance, Mono.93.

experiment, and physical measurements, 4837. experimental, application, study of a test method, comments on, 5243.

free-air ionization chambers for the soft X-ray

region (20-100 kv), 3176.

inertial seismograph, 4693. interferometric oil manometer of vacuum measurements, 4569.

logical, session, 1865A. low voltage electron guns, 5280. mechanical, of protected areas, 4756. panoramic ionospheric resources, J 65D6-165, 629

(1961). physical measurements and experiment, 5565. requirements for mechanical system in protective

shelters, 4570. retarding field energy analyzers, 4031. sampling and statistical, 6357. spinning goniometer automatic direction finding, J 65D3-125, 237 (1961).

static elastomeric seals for cryogenic temperatures,

5983.

statistical, experiments, 9040.

statistical procedures for the evaluation of an

automatic gamma-ray point-source calibrator, J 70C2-219, 53 (1966). work in the Federal Government, evaluating computer systems analysis, 6053. Designation and specification of color, 6382A. Ligand positions in inorganic complexes, 6684. Designed experiments, evolution, 9078. Designs for temperature and temperature gradient compensated capacitors smaller than ten pico- farads, J 68C4-177, 305 (1964). Desorption, calcium sulfate from revivified bone char,

4571.

field, thorium from a field-evaporated tungsten

surface, 6755.

kinetics of Cs+ and Ba+ from rhenium, 5435.

kinetics of positive ion, polycrystalline tungsten and rhenium, 5767.

kinetics of Rb+

, K+ and Na+ on rhenium, 5436. tungsten, 5015.

Detail, atomic, condensation of tungsten on tungsten:

observation with the field ion microscope, 6651. Monte Carlo and statistical calculations vs experi- ment, 6650. Detailed techniques for preparing and using hard

gallium alloys, TN140 (PB161641).

Detecting radiation, 3495. Detection and damping of thermal-acoustic oscillations

in low-temperature measurements, J 69C1-

183, 35 (1965).

Detection, estimation of low concentrations of aldehyde

in air, 3496. 525
high altitude nuclear detonations using the VLF

phase shift technique, 5281.

optical heterodyne, forward-stimulated Brillouin

scattering, 6271.

optical, microwave transitions between excited elec- tronic states of CN and the identification of

the transitions, 8270.

lattice deformation and recovery in epsilon phase

silver-tin alloys, J 68A3-279, 317 (1964). study of solar cosmic rays by radio techniques,

4989. theory, J 64D6-96, 678 (1960).

Detector, cooled IR, optical system 6605.

precision, for complex insertion ratio measuring

systems, 6305. semi-conductor, at low temperature, anomaly in response of, 5921.

sensitive, new mode of operation, 6885. Detectors, factors affecting the sensitivity and spectral response of thermo-electric (radiometric),

9019. high efficiency, determination of disintegration

rates by the coincidence method, 4201.

radiation, 5611.

silicon semiconductor radiation, low temperatures,

6813.

solid state, beta-ray spectroscopy below 4.2°K,

5663.

sources, and standards in radiation measurements,

6398; 9038. Determinant and the permanent, relation between,

4208. Determination, absolute, refractive indices of gases at

47.7 gigahertz, 6576A.

absolute temperatures from sound velocity measurements, 4990. acceleration of gravity, results of an absolute, 8998. apparent volume of leather, application of Archi- medes' principle, 6429. area of guarded electrodes for accurate dielectric measurements on solid-disk specimens, precise, 6304. beta-emitting radionuclides in aqueous formamide

solutions, 4990A. bitumen content in expansion joint fillers, 5282.

calorimetric, of the enthalpy of graphite from 1200

to 2600 deg K, 6541. carboxyl in cellulose—comparison of various methods, 4032. composition of complexes and their instability constant by calorimetry. I. The cuprocyanide

complexes, 6688. concept of pH, 3163.

crystallite size distribution from X-ray line broadening, 4034.

differential X-ray photon flux and total beam

energy, 5283.

dipole moment function from infrared band in- tensities of diatomic molecules, 3499.

direct, crystal structure of NaB(OH) 4

• 2ILO, 5745. disintegration rates by the coincidence method

using high efficiency detectors, 4201.

dissociation equilibria of water by a conductance

method, 4577.

electron density within discrete auroral forms in the E-region, 8913.

electronic energy levels of molecules by low-energy

electron-impact spectroscopy, 5284. experimental, bulk density of boiling liquid oxygen,

5346.

extraterrestrial intensity of the cosmic radio noise

at high frequencies, use of dual-polarized broad beam antennas, 5808.

fastest routes using fixed schedules, 5288. Fresnel zone diffraction effects, at 50 Gc/sec, measured aperture field data, 5367. fundamental and satellite band origins. Spin-orbit coupling constant of nitric oxide, 6387. gas chromatographic, moisture content of grain,

6768. half-cell entropy changes, calorimetric, 5224. height an geographical position of an auroral arc from one observing station, 5140. hide substance in leather by the Kjedahl method,

6685. intermolecular entanglement coupling spacings in polyisoprene by viscosity measurements, J

69A1-325, 33 (1965). intermolecular potential functions from macroscopic measurements, J 70A3-402, 259 (1966).

isotope effects by "double labeling" oxidation of D-glucose with iodine, 4572. K fluorescence yield of argon by proportional- counter spectrometry, TN91 (PB161592).

lead in leaded steels by X-ray spectroscopy, 4573. macro-pores in leather with a mercury porosimeter,

5454. minor constituents in low-alloy steels by X-ray

spectroscopy, J 65C1-57, 71 (1961). molecular constants. Infrared emission spectrum

of HBr excited in an electric discharge, 6800. molecular weights and of molecular weight distri- butions, in unsolved problems in polymer sci- ence, 4574. nuclear size, neutral-pion photoproduction, 8901.

optical path difference for a photographic objective, J 67C4-142, 311 (1963).

optical thickness gradients from a far distance, 5285.

oscillator strengths in the continuum, inelastic electron scattering from rare gases, 6127. oxidation rates of air-blown asphalts by infrared

spectroscopy, 4575. pentosans. Interlaboratory comparison of the aniline acetate, 3497. pH, theory and practice, 5985.

piezoelectric properties as a function of pressure and temperature, 3498.

precise, of the dielectric constant and loss angle

of solid-disk specimens, techniques for using

air-gap method, 6423. probability distribution of the number of secon- dary electrons, 5986; 6889. propagation constants for ultrasonic moves in melt- ing and molten polyethylene, 5987. propylene in ethylene-propylene copolymers in infrared spectroscopy, 5286. radiochemical, uranium of low activity, 6331. recording performance of a tape from its magnetic

properties, 3500. reducing end-groups by reaction with C

,4 -labeled cyanide, 6686. residual thiosulfate in processed film, J 67C3-134, 237 (1963). rhodium-uranium alloys by precipitation with hydrogen sulfide, 5287. self-absorption in the standardization of electron- capturing radionuclides, 4576. separation of zirconium in zirconia yttria mixtures by precipitation with cupferron, 6362. sinusoidal accelerations at peak levels near that

of gravity by "chatter" methods, 1310A.

solid vapor equilibria of binary cryogenic systems,

5190. spectral absorption coefficients of homogeneous

materials in the infrared at elevated temperatures, 8954. 526
spectrophotometries, bromine and hydrogen bro- mide, 9029. spectrophotometric, ionization constant of dimethylpicric acid (2, 4, 6-trinitro- 3, 5-xylenol),

in water at 25°C, J 64A6-77, 531 (1960). spectrophotometric, ionization constant of 2, 4, 6- trinitro-m-cresol in water at 25°C, J 64A6-78, 533 (1960). spectrophotometric, rate of dissociation of tetra- fluorohydrazine behind a shock wave, 9030. starch in paper. Comparison of the TAPPI, enzymatic, and colorimetric methods, 3177. structure of carbon suboxide, high-resolution infrared, 6113. tellurium by cathode-ray polarography, 6687. thermodynamic acidity constants, 988A.

thickness, 5823. thickness and refractive index of thin films as an

approach to the study of biological macromolecules, M256, p. 297.

total X-ray beam energy with a calibrated ionization chamber, Mono.48. trace amounts of cobalt: Substoichiometric radio- metric analysis, 9050. tropospheric temperature structure from groundbased measurement of oxygen emission, 6549.

ultrasonic, crystalline resonances and sound velocities using NMR techniques, 9124. uranium, high-precision coulometric titrations, 6778. value of the faraday with a silver perchloric acid coulometer, J 64A5-63, 381 (1960).

viscosity, 3178. water added to solvents, differential dielectrical apparatus, 5295. wax in paper, 4033. work function from the ratio of positive to negative surface ionization of an alkali halide, 9069. X-ray, Debye temperature of silver iodide, 5914. Determinations based on duplication of readings, J 68B2-115, 49 (1964). Determinants and conditional inertia indexes, 3896. Determining, alkali resistance of porcelain enamels, standard test, 6393. bond strength, 6584. moisture in solid materials by reaction with cal- cium carbide, 6690.

optical constants of metals in the infrared, M256,

p. 119. strength of flat glass, comparison of single-point and two-point loading, 5962. Detonation, unstable, near a hypervelocity missile, 5836. waves, study of, missile technique, J 66C1-87, 51

(1962). Detonations, nuclear, VLF phase shift technique, detection of high altitude, 5281. Deuterated molecules, method of adjusting force constants and its application to H20, H-CO, CH2 C1, 6864. polystyrenes with hydrogen and deuterium atoms,

6335. Deuteration and temperature upon the photolysis of

cellulose in a vacuum with 2537 A light, 6013. Deuterides, diatomic hydrides, and tritides, ideal gas thermodynamic functions and isotope exchange

functions, Mono.20. Deuteriophosphoric acid in deuterium oxide from 5 to 50 deg., second dissociation constant, 6360. Deuterium chloride in heavy water from 5 to 50 deg., thermodynamics of solutions, 6506. cyanide and hydrogen cyanide, vibration-rotation bands, 6529. high-temperature strain gages, Mono.26.

Deuterium, hydrogen, atoms of, electron spin resonance

spectra of free radical intermediates formed

by reaction of polystyrene, 4062. hydrogen atoms, reaction of deuterated polystyrenes, 6335. Deuterium isotope, J 68A1-250, 1 (1964).

isotope effect in vacuum-ultraviolet absorption

coefficients of water and methane, 6691.

isotope effect on glass transformation temperatures

of aqueous inorganic solutions, 5289.

oxide, 6704. oxide and thiocyanate in the forearm of man, transcapillary exchange rates, 898A.

oxide from 5 to 50 deg, dissociation constant of

acetic acid, 6704. oxide from 5 to 50 deg., second dissociation con- stant of deuteriophosphoric acid, 6360. Deuteroethanes, mass spectra of some, J 65A2-89, 93

(1961). methane, metastable transitions in mass of spectra, 5475. Developed grains (structure of), number, sensitometric

properties, 6333. Development, abrasion hardness of bone char, 3179. astrophysical laboratories and microscopic-astrophysics, 6207. attenuation measurements and standards, J 64D6-

96, 599. chemistry, calorimeter and its influence, 6432. current in an electronically scanned antenna, 5272.

directions to keep leather apace, 4035.

electronic digital computers at the National Bureau

of Standards, 332A.

filters for a thermoelectric colorimeter, J 67C4-143,

319 (1963). improved microwave calibration systems, M248,

p. 49. stable gage blocks, 4348. theory of errors with reference to economy of time,

J 69B3-144, 139 (1965). weights and measures control of packaged goods in the United States, 3826. Developments, dental materials: a world-wide survey,

6884. dental research during the last 25 years, 2301A.

elastomers for static cryogenic seals, 6338. high temperature thermocouples, 5647.

initial, in materials and measurement: gage blocks

of superior stability, J 64C3-38, 175. neutron source standardization, 5631. noble metal thermocouples, 5677. polymer evaluation procedures, 5988. semiconductor devices in the United States for the period 1960-1963, J 68D5 365, 660 (1964). world-wide, 6853. Device, adjusting dental interferometer, simple, 6560. chemically thinning crystals for transmission elec- tron microscopy, 4578. Gimbal, minimize the effects of off-center loading on balance pans, J 64C4-46, 277 (1960). semiconductor surface-state charge-storage, application, 5203.

spectral excitation in controlled atmospheres, simple arc, 9007. Devices, Hall effect, standardization of definitions for, 6394.

jet thinning, preparation of ALO electron microscope specimens, 6168. Dewar system for low temperature experiments, 3501. Dewars, glass, for optical and other studies at low

temperatures, 4673. powder-insulated, large, cold-down and warm-up,

5261A. DF bearings, Brooke variance classification system, J 65D3-128, 255 (1961). 527
Diagnostic radiology, dosimetry in, quantitives and

units for, 5607. Diagonals, positive, bounds for determinants with,

3449. Diagram, CIE, lines of constant correlated color temperature based on MacAdam's (u, v) uni- form chromaticity transformation, 5449. technique, classical, calculating thermostatic properties of solids; application to dielectric susceptibility of paraelectrics, 6635. Diagrams, phase, for ceramists, 6282.

spot, prediction of lens performance from design

data, Mono.93.

Dialysable polyvinyl-pyrrolidone components, 4916. Diamagnetic nuclear shielding constant and self-energy

of the charge distribution of the scatterer, sum rules relating coherent X-ray scattering

data, 5714. Diameters, collision and nonreasonant absorption in the foreign-gas broadening of symmetric top

molecules, 6227. Diamond anvils, optical studies at high pressures,

4821. Bcc and Fee structures, correlation factors for impurity diffusion, 5978.

cell for X-ray diffraction studies at high pressures, J 66A4-167, 325 (1962) high temperatures, heat capacity of, 5004. powder in sub-sieve sizes, grading, CS261-63.

silicon, widths of transmission Kikuchi lines, 9140. Diaphragms, corrugated, bending and stretching, 3152. Diatomic, hydrides, deuterides, and tritides, ideal gas thermodynamic functions and isotope exchange

functions, Mono.20. potential function, 4439.

radicals, synthesis, 6416. Diatomic molecules, 6353.

dissociation, 5464. infrared band intensities, 3499.

liquid and crystalline rare gases, absorption spectra, 5901. microwave spectral tables, Mono.70, Vol. I. vibration transition probabilities, 3911. Diborane, 7V-dimethylamino, heat of formation, J

65A1-86, 71 (1961). products of a microwave discharge in diborane, exploratory study, low temperature X-ray

diffraction techniques, 3208. Dicalcium ferrite, crystallographic changes with the

substitution of aluminum for iron, 5271.

silicate, polymorphism, 4268. Dichloracetic acid at elevated pressures, 4233. Dichloroanilines and dichlorophenols, six, in aqueous

solution at 25 °C, ionization constants, J 68A2-

264, 159 (1964). Dichlorophenols and dichloroanilines, six, in aqueous

solution at 25 °C, ionization constants, J

68A2-264, 159 (1964). Dichromatic vision and normal trichromatic vision representing a reduced form of normal vision, 6342.

Dictionaries, physical sciences and engineering, M258. Dicumene chromium, thermal decomposition, chrom- ium plating, 4523. Dicyanoacetylene, heat of combustion, 3835. Dideuteroacetylene (C2D2 ), infrared spectrum, 4697, Die steels, 4943.

Dielectric, air, coaxial cables as cryogenic transfer

lines, 5180. apparatus for determining water-added to solvents,

differential, 5295. behavior of the film formed on mica cleaved in moist air, J 68A2-266, 173 (1964).

capacitor, improved ten-picofarad fused slica, J

69C3-196, 173 (1965).

cavity resonator, measurements of rod samples,

3458. conductance, DC, (reciprocal resistance) and conductivity (reciprocal resistivity) measurements, 6697. cryometry, chemical purity by, J 67A6-247, 607

(1963).

dispersion of paraffinlike solids, dumbbell model,

6545.

friction on a moving ion, 5292.

friction on a rotating dipole, 5293. loading of electric dipole antennas, J 66D5-215, 557, (1962).

loss in "non-polar" polymers, 4582.

losses and surface conductivity of dielectrics in parallel plane test capacitors, on the measurement, J 68A2-267, 185 (1964). maximum, 4654. mechanical relaxation of crystalline polymers in relation to degree of crystallinity and morphology, 6202. multilayer coatings and interference filters, toler- ances for layer thicknesses, J 64A6-70, 487.

polarizability of fluid para-hydrogen, 5989. relaxation, dipole moments and dielectric constants,

tables, 6419. relaxation in a high temperature dipole lattice, 5294. relaxation in molecular crystals, theory, 3352. samples, measurement and standardization, 4747.

solid-disk, specimens, 4280. spectroscopy of compressed gases, cavity reso- nators, 3156.

static, constant of rutile (Ti02 ), 4312.

susceptibility of paraelectrics, application; classical diagram technique for calculating thermostatic properties of solids, 6635.

theoretical, behavior of an ethyl stearate-henei- cosane mixture, 3881A.

thin, films on their electrodes, 3777.

Dielectric constant, 4653; 4654.

liquid parahydrogen, TN144 (PB161645).

loss angle of solid-disk specimens, techniques for using air-gap method for precise determination, 6423.

loss of Ti02 (Rutile) at low frequencies, 3501A. volume measurements on liquids at high pressures, simultaneous, 9008.

Dielectric constants, Cr2 03 crystals, 5291.

dipole moments and dielectric relaxation times,

tables, 6419.

Dielectric measurements, accurate, solid-disk speci- mens, precise determination of the area of guarded electrodes, 6304. errors in, due to a sample insertion hole in a cavity, 3534. international comparison, 6149. two-terminal, up to 6 x 10s Hz, J 69C3-195, 165

(1965).

ultra low frequency bridge for, J 65C1-52, 23

(1961). ultraglow frequency bridge, 3973.

Dielectric properties, 4613.

liquid boric oxide, J 69A3-347, 281 (1965). polyamides, 4038. polyamides: polyhexamethylene adipamide and

polyhexamethylene sebacamide, J 65A3-101,

185 (1961). polymeric systems, 3502. semicrystalline polychlorotrifluoroethylene, J 66A4-

162, 269 (1962).

solid polymers, 4583.

Dielectrics, ceramic, with a very low temperature coefficient of capacitance, 3771. 528
parallel plane test capacitors, measurement of di- electric losses and surface conductivity, J 68A2-267, 185 (1964).

Diesel fuel, use of 2, 2, 4, 4, 6, 8, 8-heptamethylnonance, 3879. Diethanol ammonium ion in water from 0 to 50 °C,

acidic dissociation constant and related ther- modynamic quantities, J 66A1-142, 71 (1962).

derivatives of 2, 2' (phenylimino) diethanol, 5670. Diethyl ether, hydroperoxide, 4931.

Diets, selection, mathematical programming models to minimize weighted radionuclide intake, 5461. Difference between a non-LTE and a pure absorption model for the line-blanketing effect, 6641. equations, neighbor sets for random walks, 1782A.

long path, using He-Ne laser, interference fringes, 5418. path, optical, T-bench method for measurement,

5549.

sets, generalization of a result of Newman on

multipliers, J 69B4-161, 319 (1965).

sets, note on multipliers, J 69B1&2-138, 87 (1965).

sets, multipliers, 4184A; 5496.

Differences, characteristic electron energy-loss spectra

of solid and liquid bismuth, 6692.

coefficients, zeros of polynomials and fractional

order, 5864.

Different, network parameters, not assuming reciprocity or equality of the waveguide or transmission

line characteristic impedances, relationships between, 6343.

yield strength, shear strength of beams without web reinforcement containing deformed bars, 5654.

Differential analyzer (CADDA), combined analogdigital, 3373A.

chemical shift, TN276.

dielectric apparatus for determining water added

to solvents, 5295.

linear, equations of the second order with a large parameter, 3241. microwave phase shifter, 5872. operator, new, pure wave type, 6552. operators, fundamental solution and Huygens'

principle, 9079. operators, spectra of second-order, 1099A. phase shifter, analysis, 5916. thermal analysis, 4584. thermal analysis, heats of transformation in bis- muth oxide, J 69A3-342, 237 (1965). thermocouple voltmeter, 4422. X-ray photon flux and total beam energy, determination, 5283.

Differential equations, Brownian motion of a free

particle, 4198. irregular singularity of rank one, application to Whittaker functions, asymptotic solutions of second-order, 8910.

linear, convergence of asymptotic solutions, 1430A.

second-order, having an irregular singularity of arbitrary rank, error bounds for asymptotic

solutions, 6741.

Differentiation, numerical interpolation, and integration, AMS55.

Diffraction and electron microscopy, aluminum oxide whiskers, 6729. synthetic cordunum crystals, 6730.

Diffraction, calculated, effects at VLF from a localized ionospheric depression, TN208.

composite cylinder, J 65D1-99, 19 (1961).

effects, fresnel zone, at 50 Gc/sec, determined from

measured aperture field data, 5367.

electron, structure of gaseous copper II nitrate as determined, 5800; 5801.

field measurements, light-modulated scattering technique, J 68D4-353, 355 (1964).

fields for grazing angles, computation, 2665A.

grating interferometers, 4813. patterns caused by ionospheric irregularities, an

approximate method for computing, J 68D6-

371, 737 (1964). powder patterns, standard X-ray, C539, Vol. 10; Mono.25, Sect. 1 to 4. region, far, calculation of groundwave attenuation, J 68D7-379, 819 (1964).

scattering, J64D6-96, 707 (1960); J 68D4-359, 490

(1964).

simplified theory, at an interface separating two

dielectrics, J 68D3-346, 303 (1964). smooth conical obstacles, J 64D4-64, 317 (1960).

spherical radio waves, finitely conducting spherical

earth, J 66D1-177, 101 (1962).

studies, high-pressure X-ray, 5388. synthetic corundum crystals, 6730. theory for LF sky-wave propagation, 3925. waves by a wedge, 994A.

x-ray, J 67A2-201, 149 (1963); 5128.

Diffractive corrections to the geometrical optics of low

frequency propagation, 3503. Diffractometer furnance, X-ray, 4859; 5400. Morelco X-ray, simple low temperature specimen

holder, 3945. Diffuse spectral reflectance, effect of surface texture, 6715; 6716. Diffusely reflecting specimens, avoiding errors from

stray radiation in measuring spectral emit-1

tance, 6610.

Diffusion, Bcc, diamond, and Fee structures, correlation factors for impurity, 5978. chemical concentration gradient, 4037.

coefficient of dodecyltrimethyl-ammonium chloride

in aqueous solutions at 23°, 3180.

coefficient of water in glass, concentration-dependent, 5256.

coefficients and microscopic fluctuations of a nonequilibrium plasma in a magnetic field, 6866.

coefficients, random-walk calculations, 8979. constant, effective, polyelectrolyte solution, 5221;

5313. constant in a polyelectrolyte solution, TN192.

equations and correlated walk in a driving force, 6661. Fee lattice, 4551.

field, stability of the shape of a solid cylinder, 9034.

flames, opposed-jet methane-air, the effects of

alkali metal vapors and organic halides, 5411. impurities in ionic crystals, drift mobility, 6709. mechanical basis, 4755. model, surface reaction-olefin, 4745. non-linear ambiopolar, 4791. penetration, fast charged particles, Monte Carlo

calculations, 5495. penetration of X-rays, 3280. plasma across a magnetic field, stochastic theory,

6405. polymer with lamellar morphology, polyethylene,

5990. surface, K and Hg crystal whiskers, and growth

and evaporation kinetics, 5378. thermal, dilute alloys, 5073. thermal, liquids, 4692. thermal, substitutional impurities in metals, 9109.

Diffusions, nonlinear ambipolar, of an isothermal plasma across magnetic field, 6226.

Diffusive model for the initial phase of a solar proton

event, 5873.

Diffusivity of semiconductors, several new methods to measure, 3761. Difluoramine, infrared spectrum, 5409.

structure, microwave spectrum, 5485. Difiuoroborane, properties and preparation, 6308. Difluorodiazine, heats of formation of two isomers,

5382. 529
Digital, analog, differential analyzer, 3135.

analysis, multiple biologic recording, 4183.

circuit, core, transistor-magnetic, TN113 (PB161-

614).

circuit design, absolute simplest form, 3810A.

circuit design, Boolean matrix equations, 3152A.

circuits, TN268.

handling of chemical structures and associated in- formation, 6693. instrumentation, TN268. methods for the extraction of phase and amplitude

information from a modulated signal, J 65D4-

138, 351 (1961). pattern recognition by moments, 4585. ray-tracing program for ionosphere research, 3926. recording of electrocardiographic data for analysis by digital computer, 3182. techniques in statistical analysis of experiments, 2522A.

Digital computer, TN276.

analysis by, electrocardiographic data for, digital recording, 3182.

direct quantitative analysis of microstructures,

5992. numerical analysis of the thermal environment of occupied underground spaces with finite cover, 6236. quantitative metallography with, application to a Nb-Sn superconducting wire, J 67A2-200, 127

(1963).

Digital computers, design and maintenance of new computers, 4402. frequency comparator, TN276.

magnetic amplifiers, 2622a.

Digital electronic computer, analysis, 3722. automatic screening of normal and abnormal

electrocardiograms, 3982. biomedical science, 3181. NBS, development, 332A.

use in science and engineering, 2541A.

Digitized phasemeter, J 68C4-167, 223 (1964).

pictorial information with a precision optical scanner, 5991. Dihydrate, electron paramagnetic resonance spectrum

of bis-8-hydroxyquinolate-copper (II), 6732. Dihydrogen phosphate, ammonium, growth layers, 6775.

ion from 10 to 40°, dissociation constants of acetic acid and, 8987. Dilute alloys, annealing of vacancies in, 9059. hyperfine field, nickel in iron, nuclear resonance,

5521.

nickel in cobalt, 4794. theory of thermal diffusion, 5073. Dilute argon, thermal conductivity, TN333.

base gases with repulsive interactions at low temperature, binary mixtures, 5213. ferromagnetic alloys, nuclear magnetic relaxation

of the impurity nucleus, 6232. polymers solutions, light scattering, 6177.

solution, concentration dependence of sedimentation coefficient of polystyrene, 6433A.

solutions, formation of polymer crystals with

folded chains, 3213A.

solutions, polystyrene, 4544. Dilution effects, and magnetic susceptibilities in lowspin d4 complexes, osmium (IV), 5456.

7?H, measurement of, 1066A.

radioisotope, application to the radioassay of Ce1 ", 8977. Dimension zero is constant, bounded automorphic form,

6540. Dimensional changes, amalgam prepared with a stand- ardized mechanical technic, early strength, flow and, 6003. complete dentures on drying, wetting, and heating

in water, 4586.

dental amalgam associated with strain release in the silver alloy particles, 6694. denture, 4587.

fibrous macromolecules: the system, 4588. occurring in artificial dentures, 3184. occurring in dentures during processing, 3504. systems of fibrous macromolecules: polyetheylene,

3183. Dimensional metrology. Subject-classified with abstracts, M265.

stability of impregnated sole leather, 3185.

stability of surface-hardened steels, the temporal,

9098.

three, nature of boundary-layer instability, 5063. Dimensionality in the spin wave theory of ferromagnetism, TN327.

Dimensions and units (electrical), J 66C2-94, 137

(1962). packages for self-service selling, standardization,

6395. Dimethanesulfonate of 2,2' (phenylimino)diethanol, carcinostatic activity of, TN274.

Dimethoxychloroborane, formation, and hydrolysis,

heats, J 65A5-124, 435 (1961). Dimethyl sulfoxide-water solvents at 15, 25, and 35°, kinetics of the acid-catalyzed hydrolysis of

acetal, 6170. Dimethylbutane in a single-pulse shock tube, thermal

decomposition of 2,3-, 9108. Dimethylmercury, photolysis, reactions of methyl radicals in the solid, liquid and gas-phase, 5787. reaction of methyl radicals, 6472. Dimethylpicric acid (2,4,6-trinitro-3,5-xylenol) in water

at 25 °C. spectrophotometric determination of

the ionization constant, J64A6-77, 531 (1960). Dinitrophenols, four, ionization constants in water at 25 °C, J 64A4-57, 347 (1960).

isometric, benzene and water, 4536. Diode amplifier, 1311A. average power, TN240.

feedback loop makes stable transistor circuit, 3186.

logic, a magnetic amplifier, 5137; 5876. source book, 4040. switch for the UHF band, low input VSWR coaxial, 5875.

tunnel, large signal simulation study, 4395. Diodes, microwave detector, 4079. Zener, as voltage standards, 5247. Zener, making precision voltage measurements,

6188. Zener reference, and their measurements, operating

characteristics, 6467. Diols and cuprammonium reagent, 3480. Dioxide, carbon, role of, bone char process, 5791.

solubility in liquid solvents at low temperatures, thermodynamics of solid carbon, 9114. 298 to 1,200 °K, thermodynamic properties of tho- rium, J 65A2-92, 105 (1961). uranium, powders, flexural strength of specimens,

3543. Dipolar and resonances coupling, normal modes of a

lattice of oscillators, 3672. Dipole antennas, curves of ground proximity loss, J

67D5-289, 567 (1963); TN175.

ground for, curves of input impedance change, Mono.72.

radiation efficiency of half-wave, 8969. Dipole, approximation of the backscattering from a

conductor in a semi-infinite dissipative medium,

J 67D4-278, 433 (1963). array, Jicamarca radio observatory the large 50 Mc/s. 5768.

cylindrical, impedance of, having a sinusodial cur- rent in a homogeneous anisotropic ionosphere, J 68D4-355, 379 (1964).

effect in paramagnetic crystals, calculation of the higher order, J 68A1-259, 113 (1964). 530
electromagnetic fields, 4351. electromagnetic fields, presence of a thin plasma

sheet, 3828. excitation of VLF and SLF radio waves by a hori- zontal magnetic, J 65D3-133, 305 (1961).

horizontal, electromagnetic fields, 4352.

horizontal magnetic, in the presence of a magnetoplasma halfspace, J 67D5-282, 501 (1963).

lattice, dielectric relaxation in a high temperature,

5294. magnetic, electromagnetic radiation from, with

arbitrary orientation embedded in a lossless magneto-ionic medium, J 69D5-502, 671 (1965). magnetoplasma based on the classification of the

associated dispersion surfaces, a systematic study of the radiation patterns, J 69D5-503,

681 (1965). Dipole moment, electric, of the hydroxyl radical, im- proved measurement, 6791. function from infrared band intensities of diatomic

molecules, 3499.

internal barrier, equilibrium conformation, and

structure, 4179.

isotopic substitution, change of: structure of the isobutane molecule, 3798. nuclear quadrupole effects in vinyl chloride, micro- wave spectrum structure, 3648. PCh F from the nonresonant microwave absorption

of the vapor, 6695. Dipole moments, dielectric constants and dielectric re- laxation times, tables, 6419. hydrocarbons, 3506. Dipole, radiation in a conducting half space, J 65D6-

159, 547 (1961).

rotating, dielectric friction, 5293.

short, impedance of, in a compressible plasma, J

69D4-491. 559 (1965).

transitions, phenon induced nuclear, 8939. Dipotassium. lithium, trimetaphosphate monohydrate,

5052.

Direct, alternating, system for accurate voltage measurements, 6568; 6569. inert-gas-sensitized radiolysis and photolysis of methane in the solid phase, 6696. Direct-current, resistance apparatus, calibration procedures, Mono.39.

switching filter, 4459. Direct determination of the crystal structure of NaB

(OH) 4 -2H20, 5745. Direct measurement, line intensities and widths, in the

first overtone band of CO, 4590. net positive suction head, 3186A.

Direct observation, charge storage in the surface

states of silicon, 5296. decomposition multiply charged ions into singly charged fragments, 6698.

optical anisotropy of the holmium nucleaus, 6699. products, factorial designs, 4650. quantitative analysis of microstructures by a digital computer, 5992. Direct-reading, balances, weight calibration schemes,

J 66C1-85, 33 (1962).

ratio sets, active and passive, for the comparison

of audio-frequency admittances, J 68C4-168, 227 (1964). two-knife 50-pound balance of high precision suit- able for state weights and measures laboratories, J 68C3-159, 141 (1964). viscometer, 3116. Direction and meaning of standards of radiation protection, 3767. Direction finders, antenna coupling error, J 65D4-140,

363 (1961). Direction finding, ephi system for VLF, J 65C1-53, 43

(1961). phase difference observations at spaced aerials and

their application, J 65D3-123, 229 (1961).

problems, long-distance location, J 65D3-124, 233

(1961).

related ionospheric propagation topics, 1955-1961,

bibliography, TN127.

techniques; propagation studies, J 65D3-120, 197

(1961).

whistlers, 3187. Direction of the force on a dislocation and the sign

of the Burgers vector, 9070.

Directional, coupler using a sliding short-circuit and

an adjustable sliding termination, measuring

the directivity, 6201.

couplers, correction to a method for measuring

the directivity, 5976. Directive gain, Mono.95.

Directivity, directional coupler using a sliding shortcircuit and an adjustable sliding termination,

6201.

directional couplers, correction to a method for measuring, 5976. uniformly spaced optimum endfire arrays with

equal sidelobes, J 69D9-560, 1249 (1965). Directory, descriptive, standardization activities in the United States, M230.

Dirty contacts on semiconductors and resistivity measurements by a two-terminal method, 4926. Disaccommodation of magnetic spectra of two manganese zinc ferrites, J 69A2-339, 181 (1965). Discharge, cavities, microwave, operating at 2450 MHz,

6868.

electric, infrared emission spectrum of HBr excited, 6800. Discharge tubes, electrodeless, and predicted starkeffect shifts in the spectrum of neutral ger- manium, correlation between observed wavelength shifts produced in, electrodeless, 5977. Discharges, radiofrequency radiation from lightning, J 64D6-96, 638 (1960). Disclosures on various subject: back-up ring for O-rings, TN287.

coaxial T, TN263.

color sorter, TN263.

double-tuned transformer, TN237.

electrostatic RMS voltmeter, TN287.

film strip printer, TN263.

focus detector, TN287.

frequency meter, TN237.

glass joint or stopcock, TN253.

low temperature solid state thermometer, TN287.

magnetic tape handler, TN287.

micro-adjuster, TN253.

miniature puller, TN253.

moisture detector, TN263.

multi-pen recorder, TN287.

normal incidence interferometer, TN263.

phase shifter, TN237.

plumbing vent manifold. TN253.

precipitation indicator, TN263.

ram-controlled system, TN237.

signal averaging filter, TN287. vacuum ball balve, TN263.

Discovery and encouragement of science talent, 1312A. Discrepancy in conversion of early melting-point temperatures, 5297. Discrete auroral forms in the E-region, determination

of the electron density, 8913. Discussion of, characteristics of sorption and expansion

isotherms of reactive limestone aggregate,

4591; 4594. electroforming solutions, 4592. enameled cold end surface for low temperature

service, 4595. foundations of goniophotometry, 3507. errors of a recommended standard resistor-noise

test system, 4593. 531
Federal Specifications GG-X-620 and F-310 for Dental X-ray apparatus and dental radio- graphic film, 3117. lambda varience and its application to TAPPI

standard T 414 m-49 for internal tearing re- sistance of paper, 5923. measurement of short duration umpulse voltages,

5298. papers of Messrs. Satterthwait and Budne, 3189. pattern recognition problems, 3188. predicting compressive strength from the properties of the fresh concrete, 5994. spin-spin relaxation formulae and experiments,

5995. thermophysical properties of zirconium hydrides,

4596. theory of ionospheric cross modulation, J 68D10-

410, 1109 (1964). Discussion on, basic equations with source terms in compressive and incompressive plasmas, J

69D2-460, 243 (1965). modulation, remarks presented at a panel, 5637. Mossbauer effect, 6700. Discussions on pA theoretical study of induced electrical polarization, 2525A.

Disintegration rates by the coincidence method using high efficiency detectors, 4201. Disk, circular, acoustic radiation pressure, 941A.

distribution of flares associated with certain radio

bursts, 3508.

source, circular, radiation field, J 65C4-78, 249

(1961).

source, power-series buildup factor formulation,

application, J 67C4-140, 291 (1963). Disk-loaded monopole, electric field at ground plane, J 66D2-188, 205 (1962).

Dislocation, chemical etch pits in copper, 4598. images formed in transmission electron microscopy, displacement, 6703. loops in deformed copper, 4597; 5527. sign of the Burgers vector, direction force, 9070. sources in stainless steel, observations, 8904.

Dislocations, decoration, aluminum oxide, 5744. growth of helical, 5533. observations of, Mono.59, p. 35. polymer crystals, J 68A5-297, 513 (1964). stacking faults in aluminum nitride, 4041. stacking faults in rutile crystals grown by flamefusion methods, 6701. theory: elementary introduction, Mono.59, p. 13. Disodium m-benzenedisulfonate as a hardening agent

in a Watts nickel bath, 3898. Disordered one-dimensional, harmonic crystal lattices, numerical computation of time-dependent properties of isotopically, 5522. Dispersion, absorption of centimeter waves by gases, on the index of refraction of air, J 67D6-297, 631 (1963).

characteristics of the 1.15/x He-Ne laser line, 6702.

dielectric, paraffinlike solids, dumbbell model for, 6545.

effects, audiofrequency, lanthanide salts at low

temperatures, 5208. gases, translational, 5829.

infrared, some oxide glasses, 5408. parameters, estimation, J 66B4-82, 161 (1962). refraction of synthetic sapphire, 4890. waves in a cold magnetoplasma from hydromagnetic to whistle frequencies, J 69D4-484, 463

(1965). Dispersions, paramagnetic, the spin lattice relaxation

time, 5798. Displacement, dislocation images formed in transmission electron microscopy, 6703. meter, rotary positive, theory, 5813.

strain energy distribution in a longitudinally vibrating cylindrical rod with a viscoelastic coating, 4599. Disproportionation-combination reactions of alkyl radi- cals and hydrogen atoms at low temperatures,

5996. Dissemination, NBS-A time scale — its generation, 9087A.

Dissipative medium, semi-infinite, a dipole approximation of the backscattering from a conductor, J 67D4-278, 433 (1963).

Dissociation, acetic acid-d3 in aqueous solution and

related isotope effects from 0 to 50 deg, 6705.

acetic acid in deuterium oxide from 5 to 50 deg,

6704.

acid and related thermodynamic quantities for tri- ethanolammonium ion in water from 0° to

50° C, J 64A4-56, 343 (1960). aminopyridinium ion in water from 0° to 50° C

and related thermodynamic quantities, J 64A5-

66, 427 (1960). 2-ammonium-2-methyl-l,3-propanediol in water from 0 to 50° and related thermodynamic

quantities, 4601.

anistic (p-methoxybenzoic) acid in the system

ethanol-water at 25° C, J 64A4-58, 351 (1960). CaOH+ from 0° to 40° C, 3333. constant, 4600; 4601. deuteriophosphoric acid in deuterium oxide from

5 to 50 deg., second, 6360. protonated acid form of 2-amino-2-(hydroxymethyl)-1.3-propanediol [tris(hydroxymethyl) aminomethane] and related thermodynamic

quantities 0 to 50°, 4042. pyrrolidinium ion and related thermodynamic

quantities from 0 to 50°, 5299.

six dichloroanilines and the six dichlorophenols in aqueous solution at 25° C, J 68A2-264, 159

(1964). t-butylammonium ion and related thermodynamic

quantities from 5 to 35°, 4600. tris(hydroxymethyl)aminomethane, in 50-percent methanol, J 69A3-345, 263 (1965). weak bases, in 50-percent methanol, J 69A3-345,

263 (1965). Dissociation constants, acetic acid and dihydrogen phosphate ion from 10 to 40°, 8987. methanol-water solvents at 25° C, J 68A3-277, 305

(1964).

Dissociation, diatomic molecules, mean first passage

times. 5464. H2 -|- by electron impact, 6706. N, N-Di-(2-hydroxyethyl)- glycine and related thermodynamic quantities from 0 to 55 deg., second acid, 6359. polyatomic molecules, 3681. pressure of aluminum carbide using a rotating Knudsen cell, J 70A3-401, 253 (1966). tetrafluorohydrazine behind a shock wave, spectro- photometric determination of the rate, 9030.

Dissociative, ionization of Hz, study of angular dis- tributions and energy distributions of resultant

fast protons, 5300. recombination in helium afterglows, 6707.

Dissolution, some electrochemical aspects of germanium, 9016; 9017. Distance, high frequency radio pulse propagation, diversity effects, J 65D3-121, 213 (1961). measurements, optical, for the fluctuating at- mospheric index of refraction, 6660.

Distillation, analysis, 4602; 5997.

analytical chemistry, methods of separation, 5301.

fractional, 4418. techniques to radiochemical separations, 4495. vacuum, metals to radiochemical separations, some

applications, 5665. 532
Distilled water, influence of crystallographic orientation on pitting of iron, 3232.

Distortion, centrifugal, 4956. precise evaluation of lens, 5783. Distribution, air by fast electrons from a gun source, calculated energy dissipation, J 65A2-93, 113

(1961). angular and form, of proton groups at about Q-0 Mev in the proton spectra of (d, p) reactions

of heavy nuclei, 5364. Bridgman-type anvils, an analysis of pressure and

stress, 5189.

canonical, Markovian relaxation process, exact

conditions for the preservation, 6056.

coefficient of ferric thiocynate in isobutanol water, TN276.

crystalline size from x-ray line broadening, calculations, 5218. data processing system for the automatic trans- formation of observed plasma intensities into their radial, 5982.

density, polymer segments in the vicinity of an

absorbing interface, 6678.

electron, in the ionosphere, 6026. electrons in the lower and middle ionosphere, 9071.

empirical, of a random process, J 65B2-50, 117

(1961).

function, linear velocity-gradient term in time- dependent pair, 5448. function of lengths of a single polymer molecule with excluded-volume effects, limiting shape,

8916. function of the end-to-end distances of linear poly- mers with excluded volume effects, J 69A4-

355, 355 (1965).

functions, electron energy, in the ionosphere, 6430. gamma-ray oriented cerium-141 and its application

to thermal contact at low temperature, 5757.

intensity and spectral, of scattered radiation from Co" sources, 9082.

latitude of red arcs, 5302. longitude, of proton flares, 6834. method, potential, equilibruim statistical mechanics,

6302. molecular, functions, 4295. number of secondary electrons, determination of the probality, 5986. optimum, accumulation of calibration errors, 5176.

particle shape and size, in a reinforced polymer,

6442.

potential, in a rectangular semiconductor bar for use with four-point probe measurements, 6301.

probability, of the number of secondary electrons, 6689. quadratic forms, approximations, 6607. quantiles in samples from a bivariate population, J 64B3-31, 145 (1960).

ratio of negative ion and electron densities in the lowest ionosphere, 6253. samples from a rectangular universe, 5998. scattered radiation, from CO60 sources, the in- tensity and spectral, 5764; 9082.

signal level, modified Rayleigh, some implications

of aircraft interference patterns, J 67D4-276,

405 (1963).

spectral, typical daylight as a function of cor- related color temperature, 6383; 9027.

statistical, of amplitude and phase of a multiply

scattered field, J 66D3-191, 231 (1962).

study, radial, vitrious borium boroscilicate, 5609. tabulation of the Vavilov; energy loss straggling

of protons and mesons, 6041. theory, small-sample problems, and occasional

tables, TN238.

total service time for a fixed observation interval, 4603.

two-dimensional probability, in a turbulent field, 9122.

Distributions, a two-parameter family of hyper-Poisson,

5895. electrons transmitted through Sapphire (ALOa)

foils, energy spectra and angular, 6043. exponential, negative, from one or two order

statistics, optimum estimators of the parameters, 5550. Hyper-Poison, estimation of parameters, 6744. mathematical statistics, index, J 65B1-45, 23 (1961). nonequilibrium, 4893. radiation dose, with photochromic materials, measurement, 6854. Rayleigh, some problems, J 66D2-184, 167 (1962).

strain, resulting from rifle bullet impact, 9047. Disturbance, geomagnetic, delay time of polar-cap blackout and its relation to delay time, 5275. ionospheric, relation of solar active regions at central meridian passage, 5635. oblique incidence ionograms, effects of magnetic,

5314. sudden ionospheric, 5803.

variations, magnetic, 5740. Disturbances, due to the motion of a cylinder in a twolayer liquid system, J 64C3-42, 241 (1960).

effect of solar, low-radio-frequency ionosphere reflection process, 5532. geomagnetic activity, auroral-zone observations of

infrasonic pressure waves related to ionospheric, 5209.

listing of sudden ionosphere, 6460. superimposed on laminar flow in a rectangular

pipe, 64A4-50. 281 (1960). VLF phase, following U.S.S.R., high-altitude nuclear tests, 5848. Disturbed and undisturbed soils, results of NBS corrosion investigation, 8999. Disubstituted propanes, 1,2, NMR studies of asymetric

ethanic rotators, 6223. Disulfide-crosslinked self-crimping polyamide, fiber structure-property relationships, J 65A6-131,

489 (1961). Diurnal, geographic variations of ionospheric data by

numerical methods, representation, J 66D4-

205, 419 (1962); 5040; 8993. changes and transmission time in the arctic propagation of VLF waves, J 68D2-333, 205 (1964). phase changes of VLF waves for long paths, 5151. phase variation of VLF waves at medium dis- tances, J 68D2-337, 225 (1964). phase variations of GBR (16 kilocycles per sec- ond) observed over a path of 720 kilometers,

6349. phase variations of VLF transmissions received in Paris, some particular observations, J 68D1-

312, 21 (1964). seasonal and geographical variations in composition of high atmosphere from F-region measurements, 6255. seasonal changes in structure of the mid-latitude

quiet ionosphere, J 66D3-198, 297 (1962). seasonal variations of the atmosphere near the 100-kilometer level, 5999. VLF, phase changes and solar flare effect, 4531. Diverse substrates, effect of surface-active comonomer

on adhesion, 6585. Diversity effects in long distance high frequency radio

pulse propagation, J 65D3-121, 213 (1961). Divider calibrations at 400 and 1000 Hertz, inter- national comparison of inductive voltage, 6595. Dividers, comparison calibration of inductive voltage, 5959. inductive voltage, accurate measurement of voltage

ratios, 6427. 533
inductive voltage, with calculable relative corrections, 5405. inductive voltage, comparison calibration, 5248.

voltage, calibration of inductive, and analysis of

their operational characteristics, 5737. Dividing heat, TN269.

Division, APS, of electron physics—the first 20 years,

5928. Document, content analysis and retrival, M269, p. 47. grouping and word grouping, M269, p. 15. original scanners for input to computers, TN245.

retrieval, M269; p. 163; 5039. Documentation, M276.

mechanized, statistical association methods, M269. OMNITAB, H101. Documents, classifying, M269, p. 217. retrieval devices, TN157.

training a computer to assign descriptors; experi- ments in information correlation, 6509. Dodecyltrimethyl-ammonium chloride in aqueous solu- tions at 23°, diffusion, 3180. Dollar notes, statistical comparison of the wearing

characteristics of two types, 4443. Domain conversions of BaTiOs, 5152. regularity of generalized axially symmetric potentials, 2228A.

_ structure in grain-oriented 3.25% silicon steel, 5315. switching, 4963. Domestic, cattlehides, hide trim pattern, CS268-65.

marbles, 4838. Door, wall, and floor constructions, sound insulation, Mono.77. Doors as barriers to fire and smoke, BSS3.

Doppler, microwave, measurements of the ionization front in cylindrical shock waves from explor- ing wires, 4767.

studies of the ionosphere with vertical incidence, 4550; 4604.

studies of the ionospheric effects of solar flares, 4605; 5303. widths, empirical inference, 5240. Doppler technique, TN326; 4446. measurement of ionospheric drifts, 5019. studying ionospheric disturbances, TN306.

Dose, distributions, radiation, photochromic materials, measurement, 6854.

fields from plane sources using point source data, 5304. measurements, fast neutron, for a D-D source in water, J 68A1-250, 1 (1964).

rate, from fallout radiation, proposed experiment

to measure effects of roughness, 5602. Dosimeter, ferrous sulfate, 4715.

films processed in phenidone-thiosulfate monobaths, characteristics of, 6629. Dosimeters, energy dependence of proportional-counter

fast-neutron, 5335. Dosimetry, chemical and film media, 4606.

clinical, H87.

diagnostic radiology, quantitives and units, 5607. gamma-ray, neutron-insensitive proportional counter, 3662. megaroentgen, employing photographic film without processing, 3636. megaroentgen range, photographic, 5562. neutron and neutron flux measurement, standards, 2776A.

photographic film, 5837.

radiobiological, H88.

Double, binary keyboard as a link in the machinesorting of mail, address encoding, 5903. bond isomerization of olefins by hydrogen atoms

at -195°, 3334.

bond structure, some changes in, during the vul- canization of natural rubber, J 68A5-296, 499

(1964).

label method of analysis, TN274.

labeling, isotope effects by, oxidation of D-glucose with iodine, 4572. photon photodetachment of negative ions, 5305. probe measurements of ionization in active nitro- gen, 4607. quantum photodetachment, laser, of I", 6825. resonance experiment in electronically excited CN,

4608. Doubly ionized, cerium, 4fn configurations, 6762. configurations 4/2 6s and 4/2 6p in, 5969. lanthanum (La III), spectrum, 9031. praseodymium, nuclear magnetic moment of Pr114 from the hyperfine structure, 6894; 6895. Drag compensation and measurement with manned

satellites: feasibility study. J 67C3-135, 247

(1963). Drain, plastic, waste, and vent pipe and fittings, CS270-65; CS272-65. Drainage and venting, problems, 113A.

Drains, horizontal, in plumbing systems, investigation

of the hydraulics, Mono.86. Dravite, stability relations, 5688. Drawings, stereoscopic, simple method, 6561. Drift-free Mossbauer spectrometer, 6708. Drift mobility, diffusion for impurities in ionic crystals, 6709.

ionic impurity in an electric field, 4609.

Drifts, ionospheric, measurement of by means of a Doppler technique, 5019. Driving force, correlated walk and diffusion equations,

6661. Drops, liquid, and solids, note on particle velocity in

collisions, J 64A6-71, 497 (I960). Dry cell, standard, new, major revisions, 6842. standards, new, many changes, 3623. Dry cells, impedance of sealed nickel-cadmium, 6789. internal resistance of, a new pulse method, 3274. Dry gas operation of ball bearings at cryogenic temperatures, 4610. DTA of calcium aluminoferrite hydrates, BSS6.

Dual, centrifuge for generating low-frequency sinusoidal accelerations, J 66C4-111, 357 (1962). element bolometer mounts, DC-RF substitution

error, 5871.

polarized, broad beam antennas to determine the

extraterrestrial intensity of the cosmic radio

noise at high frequencies, 5808. Dumbbell model for dielectric dispersion in paraffinlike solids, 6545. Duplicate dentures made by different processing technics for the same patient, pressure-indicator- paste patterns, 8958. Durability, coating-grade asphalts, effect of blowing

variables, 6006. roofing asphalts, 4664. Duration and spacing of sferic pulses, 4612. Dust, zinc, and sodium iodide in N, N-dimenthylfor- mamide on contiguous, secondary sulfonyloxy groups, simple method for introducing non- thermal unsaturation, 6580A. Dwelling unit entrance as fire and smoke barriers, BSS3.

Dwellings, impact noise in multifamily, 6124. Dye systems, low atomic number, for ionizing radiation measurement, 6837. low-Z, for ionizing radiation measurement, 6839. Dyes, azo, photoisomerization of, in aqueous solution, 3346. Dynamic, behavior of a simple pneumatic pressure re- ducer, 4043.

calibration of pressure transducers, Mono.67. 534
circuit techniques used in SEAC and DYSEAC,

691A.

collective theory, 6456.

collective theory of odd-A nuclei, 6710; 9072. compressibility of a rubber-sulfur vulcanizate and

its relation to free volume, 3827. compressibility of poly (vinyl acetate) and its relation to free volume, J 67A1-194, 43 (1963). range, wide, magnetic tape recording and reproducing of atmospheric noise, 6187.

spectral characteristics of micropulsation pearls, 6711.

stability of frozen radicals, description and appli- cation of the model, 3190.

stability of frozen radicals, formal theory of the model, 3191.

static calibrations of pressure measuring instru- ments at NBS, 3792.

stress-strain curves for mild steel using the tan- gent modulus procedure, 692A.

theory of the nuclear collective model, 6002. DYSEAC and SEAC, dynamic circuit techniques, 691A. system design, 1159A. DYSEAC, system organization, 1159A. system specifications, 1159B. E E and F regions in the arctic, magnetoionic phenomena

permitting observation of valley minima, 3845. E belt, equatorial, width, 4814.

correlations, motions into night and sporadic;

ionospheric winds, 6164.

field and H-field losses around antennas with a

radial ground wire system, J 66D2-187,

(1962). region irregularities, field aligned, identified with

acoustic plasma waves, 5356.

2, committee, report of, emission spectroscopy,

5638. Ear and the skull from hearing threshold data, 4891. Early history of fire endurance testing in the United

States, 4044.

results from the ionospheric topside sounder satellite, 5671. strength, flow and dimensional changes obtained on amalgam prepared with a standardized mechanical technic, 6003. work of the National Bureau of Standards, 226A.

Earphones, vibration pickups and microphones, cali- bration, 6621. Earth alkaline, cation distributions in vitreous borates,

5905. atmosphere-ionosphere problem, fields of electric dipoles in sea water, J 66D1-174, 63 (1962)

;

J 67D1-243, 63 (1963). binary rare, oxide systems, Perovskite-type compounds, 3707. borate solid solutions, ABO-type rare, polymorphism, 6300. currents, effects of induced, on low-frequency elec- tromagnetic oscillations, J 69D8-547, 1161

(1965). curvature and the terrestrial magnetic field on VLF propagation, 3577. electromagnetic waves, 5586. geomagnetic storms and the space around, 3558. homogeneous conducting, propagation of electro- magnetic pulses, 3727. inhomogeneous, the theory of radio wave propagation over, some numerical results, J 68D7-

380, 827 (1964). ionosphere, guided propagation of ELF and VLF

radio waves, 6449.

ions, rare, validity of crystal field theory as applied, 5809.

oxides, rare, phase equilibria research, 4221.

oxides, rare, phase equilibria studies in mixed

systems, 6283.

oxides, rare, refractivities, 6341. plane, through an exponential atmosphere, propagation over, J 68D11-420, 1193 (1964).

rare, double nitrates, two, 4932. spherical and a concentric anisotropic ionosphere, comment on the mode theory of VLF radio propagation, 5242.

spherical, and a concentric shell, cavity reasonances, 6625. sun storms, 4326. Earth and ionosphere, resonance of the space, J 65D5-

152, 465 (1916). Earth-ionosphere cavity resonances, interpretation in terms of a two-layer model, observations, J 68D11-418, 1177 (1964). observed at Cambridge, England, J 69D8-540, 1071

(1965). propagation of ELF radio waves, J 69D8-539,

1057 (1965). Schumann resonances, extremely low frequency

reception at Kingston, R. I., J 66D3-199, 313

(1962). theory of Schumann resonances in, 6261. Earth-ionosphere, VLF propagation, waveguide of nonuniform width, 5851. Earth-ionosphere wave guide, 4642.

influence of an inhomogeneous ground on the pro- pagation, J 69D7-531, 696 (1965). measurement of phase velocity of VLF propagation, J 68D12-431, 1269 (1964). non-uniform width, 5120. propagation of ELF pulses, 4809. VLF propagation, TN114 (PB161615). VLF radio waves, characteristics, TN300.

waveguides, mode conversion, TN151.

Earthquake, Alaskan, of March 28, 1964, ionospheric

effects observed, 6815. Earth-space, links effects of tropospheric refraction, 6719. radio propagation, a survey of ionospheric effects, 5890. Earth's crust, possibility of guided electromagnetic waves, 5782.

field static calibrator, TN269.

magnetic field, 4537. magnetic field, cosmic-ray cut-off rigidities, 8990.

rare, atomic spectra, presence in the sun, 5734. singly ionized rare, ionization energies, 6814. surface, field-aligned ionization irregularities be- tween 400 and 1,000 km above the, 4640;

5342. surface, propagation of electromagnetic waves,

5035.

surface, wire grid parallel, 4620. East-west effect on VLF mode transmission across the

earth's magnetic field, J 65D1-102, 47 (1961). VLF wave propagation, nonreciprocal, some ex- perimental results concerning, J 68D1-310, 17

(1964). Ebert and Ebert-Fastie spectrographs, focal surfaces and slit curvatures of, theory of mirror spec- trographs, J 68C4-165, 205 (1964). spectrometer, 4953. Echoes from large meteors, the theoretical heights and

durations, J 68D10-407, 1067 (1964). spread-F, radio star scintillations, 5622. Venus at 50 Mc/s, radar, 6325.

whistler, a study of the phenomenon, J 69B3-478, 407 (1965). 535
Echoing region at 150 km in the vicinity of the magnetic equator during daylight hours, 6055. Eclipse of 20 July 1963, effect of, VLF signals propagating over short paths, J 69D7-528, 947

(1965). Economic statistics, errors, 4951. Edge, CdS, optical quenching of photoconductivity near

the band, 8926.

detail in metallography, 4857. Edmonds' maximum matching algorithm, modification, J 69B1&2-139, 91 (1965). EDTA complexes, (IV) ; polarographic analysis of titanium, 9091. Educating metrologists, 6712. Educational activities of Washington scientists, 3509.

Effect, absorbed water upon the dielectric properties

of certain acrylic ester polymer, 4613. additives on ionic reaction mechanism in the radiolysis of methane, 5307; 6005. additives on silver iodide particles exposed to

light, 4614.

air drag on the motion of a filament struck trans- versely by a high-speed projectile, J 66C4-107, 317 (1962). antenna radiation angles upon HF radio signal propagated over long distances, J 65D2-115,

167 (1961). atmospheric noise on the probability of error for an NCFSK system, 9073A.

atomic tests on radio noise, 3192. blowing variables on the durability of coating- grade asphalts, 6006. branching on the thermal decomposition of poly- mers, 4045. carbon-arc intensity on asphalt oxidation, 6440. coherent Raman, off-axis Raman resonator, 5951. coronal self-emission upon the excitation state of coronal ions, 4919. coulomb collisions on incoherent scattering of radio waves by a plasma, 6441.

crystal growth on the comparative fixation of Srso and Ca45 by calcified tissues, 4046.

crystal habit, solvent: growth of oxalic acid single crystals from solution, 6106. departures from local thermodynamic equilibrium on inferences of stellar atmospheric temperatures, 4047. departures from the Saha equation of infrared

properties of the low chromosphere. Thermodynamic structure of the outer solar atmosphere, 3887. deuterium isotope on glass transformation temperatures of aqueous inorganic solutions, 5289.

devices, Hall, standardization of definitions, 6394.

dissipative medium of finite size on antenna measurement, J 67D4-275, 397 (1963).

eclipse of 20 July 1963 on VLF signals propagating

oyer short paths, J 69D7-528, 947 (1965).

electrical fields and density in the radiolysis of ethane, 6713.

electrical fields in the gamma radiolysis of pro- pane, 6007.

electrolytes on the sodium chromotropism of bis- (meso-2, 3-diaminobutane) -nickel (II) ions, 4991.

electron collisions on the formulas of magnetoionic theory, J 69D2-454, 191 (1965). environment on the fatigue strengths of four selec- ted alloys, 9074. error in measurement of elastic constants on the

solutions of problems in classical elasticity, J 67B3-100, 157 (1963). experimental variables including the martensitic transformation on the low-temperature mechanical stainless steel, 4992.

exposure site on weather resistance of porcelain enamels exposed for three years, Mono.44. fatigue crack on the fatigue strength of an alum- inum alloy, 9073.

fluorides on infrared transmittance of certain sili- cate glasses, 3193. gamma radiation on chemical structure of plastics, 4048. geomagnetic activity on the F2 region over Central

Africa, 4993. geomagnetic crochet on cosmic-ray intensity, 5746. geomagnetic, starfish high-altitude nuclear ex- plosion, 6252. halogenated hydrocarbons on the flame speed of methane, J 70A2-388, 133 (1966). heat treatment on microstructure, M257, Paper 3, p. 29. heat-treatment on the constitution and mechanical

properties of some hydrated aluminous ce- ments, 3192A. heavy ions on LF propagation, special reference

to a nuclear environment, TN313.

helium atmosphere on the Beckman infrared spec- trophotometer, 857A.

heterogeneity in molecular weight on the sedimentation equilibrium second virial coefficient of polymers in good solvents, 6251. hydrogen-hydrogen exchange collisions, 5308; 6008. hydrostatic pressures on the crystallization kinetics of natural rubber, 5309; 5747. hydrostatic pressure on the refractive indices of some solids, J 69A4-352, 325 (1965). hydrostatic pressure upon the relation of briefrin- gence in amorphous solids, J 65A4-112, 283

(1961).

insulation of the weathering of smooth-surfaced

build-up roofs exposed to solar heating, 5310. ion-drag on the neutral air in the ionospheric Fregion, 9075.

ion size on membrane potentials, 6021.

light, oxide films formed on copper single crystal surfaces in water, 6468. linear and nonlinear signal processing on signal

statistics, J 68D9-395, 953 (1964).

line-blanketing, difference between a non-LTE

and a pure absorption model for, 6641. lithium bromide on the structural transition of ribonuclease in solution, 4349.

lossy earth on antenna gain, J 68D2-339, 251

(1964); J 68D7-378, 813 (1964). mercury-alloy ratio on the physical properties of amalgams, 4049. methyl bromide additions on the flame speed of methane, J 67A1-196, 71 (1963). microwave Zeeman, free hydroxyl radicals, 4773. moisture on heat transfer through insulated flat- roof constructions, 4994. moisture on surface flammability of coated and

uncoated cellulosic materials, 6714; 9076. molecular oxygen on the emission spectra of atomic

oxygen-acetylene flames, 4050. molecular weight on viscoelastic properties of polymers as predicted by a molecular theory, J 67B2-96, 87 (1963). monomeric reagents on the melting (contraction) and recrystallization of fibrous protein, 4615. mortar properties on strength of masonry, Mono.36. Mossbauer, discussion, 6700. multiple atmospheric inversions on tropospheric radio propagation, J 65D4-142, 385 (1961).

noncrystallizable components on the crystallization kinetics of polymers, 4616. notch geometry on tensile properties of annealed

titanium at 100°, 25°, -78°, and -196°C, 3194, 536
oleophobic films on fatigue crack propagation,

4051. outdoor exposure on some properties of chromeretanned leather, 5311.

particle shape and size distribution in a reinforced polymer, 6442.

particle size on low-temperature heat capacities, 4617. passage of electric current across a liquid function, measurement of the reversible heat, 6020. perchloryl fluoride additions on the flame speed of methane, J 65A6-134, 513 (1961). porosity on Young's modulus of alumina, 4618. pressure and added inert gases, 5758; 6448. pressure and temperature on the refractive indices

of benzene, carbon tetrachloride, and water, J 67A2-203, 163 (1963). pressure and temperature upon the optical dispersion of benzene, carbon tetrachloride, and

water, J 68A5-295, 489 (1964). pressure in the radiolysis and photolysis of methane, 6009. radio wave propagation through mid-latitude 6300 A arcs, J 67D3-261, 263 (1963).

rate of loading, time of trituration and test temperature on compressive strength of dental amalgam, 5312. reactions with the atmosphere during fatigue of

metals, 6009A.

receiver bandwidth on the amplitude distribution of VLF atmospheric noise, J 65D3-132, 299

(1961). roughness on the polarization of thermal emission from a surface. J 69D12-607, 1614, (1965) . solar disturbances on the low-radio-frequency iono- sphere reflection process, 5532. solar radiation, on cooling load of stationary

refrigerated vehicles, laboratory study, 5439A.

speed on the tensile test of paper, 3195. spin and speed on the laterial deflection (curve) of

a baseball; and the magnus effect for smooth

spheres, 3195A.

structure of the spectra emitted by solid nitrogen during electron bombardment, 3510. surface-active comonomer on adhesion to diverse

substrates, 6585. surface roughness oxidation rate of iron, 4619. surface texture on diffuse spectral reflectance, 6715; 6716. temperature and humidity on the oxidation of air- blown asphalts, 4995. temperature and notch geometry on the tensile be- havior of a titanium alloy, J 70C1-215, 5 (1966) . temperature on the vacuum ultraviolet trans- mittance of lithium fluoride, calcium fluoride, barium fluoride, and sapphire, 6717.

tensile properties of reinforcement on the flexural characteristics of beams, 3511.

Effect, vacuum-ultraviolet absorption coefficients of water and methane, deuterium isotope, 6691. vibration and shock on unsaturated standard cells, J 66C2-89, 85 (1962).

Effective area of a guarded electrode, 5748.

diffusion constant in a polyelectrolyte solution, calculations of the potential, 5221; 5313. impedance of a wire grid parallel to the earth's surface, 4620. sunspot numbers, January 1961 through July

1962, J 67D1-241, 37 (1963). temperatures of microwave noise sources, measurement, 6198.

Effectiveness, powdered materials in extinguishing hydrocarbon fires, 4052. reference material, in reducing the between-laboratory variability of TAPPI standard T414

m-49, internal tearing resistance of paper,

5202.

Effects, anharmonicity on vibrational energy transfer,

6010. cathodic currents on the corrosion of an aluminum

alloy, J 68C4-175, 283 (1964). comparison of observed atmospheric radio refraction, with values predicted through the use of surface weather observations, 5250. composition and irradiation on the glass transition temperature of methyl methacrylate-styrene

copolymers, 6012. configuration interaction on intensities and phase

shifts, 4053. connectors and adapters on accurate attenuation measurements at microwave frequencies, 6011. controlled decarbonization on the performance of

service synthad, 3196. deuteration and temperature upon the photolysis

of cellulose in a vacuum with 2537 A light, 6013.

diffraction, fresnel zone, at 50 Gc/sec, determined from measured aperture field date, 5367.

dilution, and magnetic susceptibilities in low-spin

<£4 complexes, osmium (iv), 5456.

distribution on gap acceptance functions on pedestrian queues, J 68B1-113, 31 (1964). D region after the high-altitude nuclear explosion

of July 9, 1962, long lived, 6182.

elastic electron scattering, screening, 6363.

electrostatic oscillations in the ionosphere, reso- nance, 6346. environmental, studies, evidence regarding the mechanism of fatigue, 5343.

finite lattice heat capacity on spin-lattice relaxation, 6718. gamma radiation on collagen, 3197. geomagnetic, associated with auroral zone electron precipitation observed by balloons, 5888. ground reflection in line-of-sight phase systems,

analysis, 6589. induced earth currents on low-frequency elec- tromagnetic oscillations, J 69D8-547, 1161

(1965). industry in Colorado, present and future of astro- physics, 6470. ionosphere on VLF navigational aids, J 65D6-161,

575 (1961).

ionospheric, observed around the time of the Alaskan earthquake of March 28, 1964, 6815. ionospheric, upon earth-space radio propagation,

survey, 5890. intermolecular interactions on thermodynamic

properties of gases at high temperatures and

pressures, 3512. limiting shape of the distribution function of lengths of a single polymer molecule with

excluded-volume, 8916. long-term stability on the definition and measure- ment of short-term stability, 6013A. magnetic disturbance as noted on oblique incidence ionograms, 5314. man, radiation, 5612. mechanical preparation and pH on the strength of

glass-fiber paper, 998A. medium effects on indicator acid-base equilibria in a methanol-water solvent, salt, 6356. non-linear, in spectra of the iron group, 5508. nuclear explosion over Johnston Island observed

in Peru on July 9, 1962, 5316. 537
nuclear resonance of In116 in a non-cubic environ- ment, absence of pronounced, 5898. phosphorescence of benzophenone crystals at 77°K,

9003. propagation of longwaves, sunset and sunrise in the ionosphere, J 67D2-249, 119 (1963).

relativistic damping, and electromagnetic wave

propagation in a uniformly magnetized elec- tron-positron gas, 6727. rocket outgassing on RF experiments, J 69D9-555,

1219 (1965). roughness, on the dose rate from fallout radiation, proposed experiment to measure, 5602. second order, in the phosphorescence of benzo- phenone crystals at 77°K, 9003. shape-dependent, and ferromagnetic resonance,

5355. small local change in phase velocity on the propagation of a VLF radio signal, J 68D6-368,

709 (1964).

solar flares, Doppler studies of ionospheric, 5303. solvents on the gamma-ray radiolysis of methyl

acetate and acetone, 4350.

statistics in the second virial coefficient of a real gas, suppression at high temperature, 9051.

tensile stress on the domain structure in grainoriented 3.25% silicon steel, 5315. thermal, of nickel-cadmium batteries, 6091. thermal shrinkage on built-up roofing, Mono.89. tropospheric refraction in earth-space links, 6719. ultrahigh pressures on glass, 4621. varying the output of a mechanical left verticle on the circulation in the dog, 1329A.

wall perturbations in multimode waveguides, J

68D1-314, 35 (1964).

Efficiency, ideal refrigerator, 4996. maximum, two-arm waveguide function, 5463.

radiation, of half-wave dipole antennas, 8969.

Efficient harmonic generation, 3513. radio spectrum, TN158.

Eigenfunctions and eigenvalues in real potential wells, Fortran code for calculation, TN159.

eigenvalues introduced by Bethe for the Linear Chain of Atoms, TN328. f configuration, J 67B3-101, 169 (1963). Eigenvalue inequalities, two matrix, J 66B2-73, 57

(1962). Eigenvalues and eigenfunctions, introduced by Bethe

for the Linear Chain of Atoms, TN328.

real potential wells, Fortran code for calculation, TN159.

Eigenvalues, application to the helium atom, lower

bounds, 3242. convergence of the Rayleigh quotient interation for the computation of characteristic roots and vectors, 3273. estimating, 4435. matrix, 4555. operators of the form T*T, improvement of bounds,

J 68D4-129, 173 (1964). Schrodinger's equation, lower bounds, 4157. truncations in the method of intermediate problems

for lower bounds, J 65B2-48, 105 (1961). using operator decompositions of the form B*B,

4731. Eigenvectors, error bounds in the Rayleigh-Ritz ap- proximations, J 64B4-37, 217. self-adjoint operators, error bounds, J 66B1-67, 1 (1962). Eight strains of flour beetles, mortality patterns, 6874. Eighteen cm spectrum of OH, 6014. Eikonal, exact use of, radar scattering from coated conductors: application to the semi-infinite cone, J 68D6-373, 749 (1964).

Einstein, Albert, as I remember him. (Commencement

Address), 6015. functions, tables, vibrational contributions to the thermodynamic functions, Mono.49. Einstein-Smoluchowski theory of light scattering, validity, 6264.

i?-layer ionization, dependance of critical fre- quency of the ionospheric E'-layer on the solar zenith angle and the annual variation, 6680.

Elastic, collison cross sections for O, C, CI, and F, 4627. compliances of single crystal rutile from 25 to 1000

"C, J 68A6-316, 669 (1964). deformation of rubberlike network polymers, 4727. deformation, retarded, large longitudinal, of rubberlike network polymers, 5442. electron scattering, radiative tail, 6327. electron scattering, screening effects, 6363. flow recovery, viscoelastometer for measurement,

J 65C1-51, 9 (1961).

fluids, perfect, elastic stress-strain relations, 6722.

limits, oriented residual stresses, J 65C4-79, 265

(1961). moduli, high-frequency, simple fluids, 6777. moduli, method for determining mechanical reso- nance frequencies, 3932. moduli, very low temperatures in some 300 series stainless steels, anomalous decrease, 6590. plate problems, error bounds in the pointwise approximation of solutions, J 67B3-99, 145

(1963).

plates, pointwise bounds in the Cauchy problem, J 65B2-55, 157 (1961). resonances and energy losses in electron scatter- ing from H2 , 6042. resonances in electron scattering from He, Ne, Ar,

Kr, Xe, and Hg, 6721. scattering of slow electrons by hydrogen atoms, measurement of the cross section, 5467.

stress-strain relations in perfect elastic fluids, 6722. Elastic constants, cermet specimens, temperature de- pendence, J 65C2-59, 89 (1961).

cubic crystal from velocity measurements in a

single arbitrary direction; application to Srcubic lead fluoride at room temperature, 6720. error in measurement, on the solutions of problems

in classical elasticity, J 67B3-100, 157 (1963). porosity relations for polycrystalline thoria, J 67C1-118, 39 (1963).

rutile (TiO») , J 66A6-181, 465 (1962).

single crystal ThO,. at 25 °C, 6016. synthetic single crystal corundum at room temperature, 3514. thoria specimens of varying porosity, temperature

dependence, J 67C2-122, 93 (1963). TiOa , method for determining, J 67A2-205, 193

(1963).

vitreous silica, 4973.

Elasticity, new decomposition formula in the theory, J

65B2-54, 151 (1961).

priori bounds in the first boundary value problem,

J 65B4-66, 269 (1961). tooth structure and several restorative materials,

4975. Elastomeric O-rings, force and seal evaluation, 5363.

seals for cryogenic temperatures, design of static, 5983. Elastomers and plastics, low temperature static seals, 3614. cryogenic temperatures, 4980. range 300° to 76°K, linear thermal expansion, 5447. related polymers, electrical properties, 5318.

static cryogenic seals, recent developments, 6338.

static seals at cryogenic temperatures, 4054.

stress relaxation of ^-irradiated fluorocarbon, 9045.

Electric and magnetic fields, slightly ionized air, 4626. 538
current across a liquid junction, measurement of the reversible heat effect, 6020. current and fluid spin created by the passage of a magnetosonic wave, 3515. currents and potentials resulting from the flow of charged liquid hydrocarbons through short

pipes, J 69C4-212, 307 (1965).

dipole antennas, dielectric loading, J 66D5-215,

557 (1962).

dipole moment of NO in the gaseous state, non- resonant microwave absorption, 3266.

dipole moment of the hydroxyl radical, improved measurement, 6791. dipoles in sea water—the earth-atmosphere-iono- sphere problem, fields, J 66D1-174, 63 (1962).

discharge, infrared emission spectrum of HBr,

6800. energy usage in Air Force houses equipped with

air-to-air heat pumps, Mono.51. houses (all) equipped with air-to-air heat pumps,

4635. hygrometer elements, evaporated-film, J 66C3-97, 209 (1962). magnetic fields, studies, J 64D4-73, 405 (1960).

polarizability of a short right circular conducting

cylinder, J 64B3-30, 135 (1960).

properties, 4963. properties of sea ice at 0.1 to 30 Mc/s. J 68D6-366,

681 (1964). scattering coefficients for concentric spheres and

the problem of interference free enclosures, J 68D10-414, 1145 (1964) . spin resonance, gamma-irradiated cellulose, 5331. supply and communication lines, safety rules for the installation and maintenance, H81.

Electric field, distribution in a dense plasma, 3516. ground plane near a disk-loaded monopole, J 66D2-

188, 205 (1962).

ionic impurity, 4609. jump frequencies for diffusion in ionic crystals, 4720. polarons, 6297. Electric fields, aurora and airglow, excitation, 6060. ELF, from thunderstorms, J 64D5-77, 425 (I960),

ionosphere, excitation of the red lines of atomic

oxygen, 5319.

Electrical, calibrations at the NBS, low-frequency, M248, p. 31. conduction in p-type titanium sesquioxide, 4055. conductivity and thermoelectric power of pure and

aluminum-doped rutile on equilibrium oxygen

pressure and temperature, dependence, 5278. conductivity of dilute solutions of "sea water" from from 5 to 120 °C, J 69A1-326, 39 (1965). conductivity of polar semi-conductors at high

frequencies, 3682. conductivity of the Great Lakes, J 67D6-306, 765

(1963). conductors at high temperatures, high-speed (milli- seconds) method for simultaneous measurement

of specific heat, enthalpy, and resistivity, 6546. energy measurement in an exploding wire experi- ment, 4513. engineering units and constants, M268.

field, simplification of systems of units, 3301.

fields and density in the radiolysis of ethane, effect, 6713.

fields, gamma radiolysis of propane, 6007. instrumentation, advances, 6587. instruments, calibration, 3968. measure, standards and units, 6518. measurements, low temperature, shielded coaxial

leads, 3762. mechanical properties of polymers: elementary

molecular approach, 2371A.

mechanical relaxation, Th02 containing CaO, 5471.

parameters, Mono.96. parameters of precision, coaxial, air-dielectric transmission lines, Mono.96. polarization, induced, discussions on p, theoretical study, 2525A.

precision, measurements course, M248, p. 181. quantities, UHF, measurement and standardization

of LF, 6853. radio measurements and calibrations, 1965, accuracy, NBS TN262-A.

resistance of wires of low temperature-coefficient of resistance useful in calorimetry (10°K-380°K)

,

6018. resistance-strain characteristics of thin evaporated metal films, 5319.

resistance, surface, of lead iodide films with RH at room temperature, 6567.

resistivity, preparation of copper crystals, 8956.

resistivity studies on the Athabasca Glacier, Alberta, Canada, J 64D5-79, 439 (1960). standards, 5320. standards laboratories, achievement of measurement, 5177. standards laboratories, measurement agreement,

4471.

units, maintenance, NBS, 5458.

units, systems, Mono.56; J 66C2-94, 137 (1962).

Electrical properties, 6017. aluminum for cryogenic electromagnets, TN218.

elastomers and related polymers, 5318.

kinetics of electrode reactions, J 65A4-111, 275

(1961).

materials, problems and prospects in, 5594. nonstoichiometric semiconductors, 4622. porous graphite contact on p-type silicon, 4917. snow and glacial ice, measured, J 64D4-69, 357

(1960). standard tests, 4937.

Electrically controlled guarded flat plate calorimeter,

4481. heated houses, field measurements of air infiltrated, 5359. short antenna as a probe for measuring free elec- tron densities and collision frequencies in an

ionized region, J 65D4-141, 371 (1961).

Electricity and electronics, precision measurement and

calibration, H77, Vol. I. metering, code, 6638. Electroacoustic and electromagnetic waves in a plasma,

on radiation, 8908, 8909. waves excited by a space vehicle in ionized atmos- phere and its effect on radar return, J 69D2-

459, 235 (1965). waves supported by a warm plasma slab, J 69D5-

508, 729 (1965). Electrocardiograms, automatic screening of normal and

abnormal, 3982. Electrocardiographic data for analysis by a digital computer, digital recording, 3182; 3722. Electrochemical analysis: studies of acids, bases, and

salts by EMF, conductance, optical and kinetic methods, July 1964 to June 1965, TN271.

aspects of germanium dissolution, 9016; 9017. calorimetry, 6019; 6020. mechanical stress corrosion fracture in a stainless

steel, 6746. methods, 6723.

oxidation, simultaneous chemical, 9016. phenomena, investigating, at an electrode, galvanostalametry, technique based on the negative pressure of liquids, 5370. Electrochemistry, scope, 5793. Electrode, Ag-AgC, in 5% aqueous mannitol, standard

potential, 6392. calomel, 3454.

chloride, in 10 and 15% mannitol at 25 deg, stand- ard potential of the silver-silver, 5799. 539
conductive to sodium ions for use in molten salt systems, porcelain reference, 3123.

effective area, 5748.

film formation studied by ellipsometry, M256,

p. 229.

glass, 3559; 4354. hydrogen, 3572. methanol water solvents, standardization of analytical data obtained with the silver-silver chloride, 9036. phenomena, galvanostalametry, technique based on

the pressure of liquids, 5370.

potential, valence states, 9017.

potentials, 3198.

potentials in fused systems, 5321; 6021; 6022;

6724; J 69A6-379, 553 (1965).

reactions, electrical properties and kinetics, J 65A4-

111, 275 (1961).

silver chloride, 3765 ; 5689. Electrodeless discharge tubes and predicted stark-effect

shifts in the spectrum of neutral germanium,

correlation between observed wavelength

shifts, 5977. passage of direct current through an electrolyte, 3517. Electrodeposited coatings, adhesion, nodule method of measuring, 152B. copper dendrites, 6108; 6321. copper, physical and mechanical properties, 8942. copper, relation of partial (110) pole figures to thickness and microstructure, 5634.

lead dendrites, structure, 9048.

nickel, adhesion, chromium at elevated temperatures, 3813. Electrodeposition and diffusion, nickel-aluminum alloy coatings produced, 3664.

alloys, past, present and future, 6725.

alloys, principles and practice, Vol. I, General sur- vey principles, and alloys of copper and of sil- ver and Vol. II, Practical specific information,

5322. metals from nonaqueous media, 4056. metals from the vapour phase and similarity of the process, 4029. technology, 4972. Electrodeposits, nature, cause, and effect of porosity, 4365; 4366.

porosity, nature, cause and effect, 3339; 3340; 3341. Electrodes, 3518.

fused-salt systems, 5526. guarded, accurate dielectric measurements on solid- disk specimens, precise determination of the

area, 6304. observations on reference, for fused salt systems,

5514. pH measurements, 4057.

resistance, hard gallium alloys for use as low contact, bonding thermocouples into samples, 3563. Electrodynamics, ionospheric and atmospheric tides, 3442. moving anisotropic media: the first-order theory, J 69D3-477, 401 (1965). Electroform, coring, 4548. Electroforming methods, production of embossing plates from texture patterns, 3287.

solutions, 4592. watermarks for papermaking, 9135.

Electrojet, additional features of radar returns from

the equatorial, 9014.

equatorial, association of plane-wave electron-wave

electron-density irregularities, 5733. Electroless plated contacts to silicon carbide, 3519.

plating, 5323. Electroluminescent method, measurement of minority

carrier lifetime in SiC, 4169. Electrolysis of formamides, acetamides and propionamides, 6444. 540

Electrolyte, electrodeless passage of direct current,

3517.

solubility, recent contributions to the theory, 526A.

Electrolytes, aqueous uni-univalent, thermal properties, NSRDS-NBS2.

sodium chromotropism of ois- (meso-2, 3-diaminobutane) -nickel (II) ions, 4991.

Electrolytic conductance of ammonium dihydrogen phos- phate solutions in the saturation region, 5324. deposition of titanium from fused salt media, mechanism, 4360. hydrogen and deuterium through iron, permeation

rates, J 67C2-124, 111 (1963).

solutions, structure, 3348A.

Electromagnetic and electroacoustic waves in a plasma,

radiation, 8908; 8909. bearing, 4058. boundary value problems, equations, J 67D2-260,

245 (1963).

cross sections for electron and nuclear research,

6023. energy, natural, below the ELF range, J 64D4-74, 409 (1960).

excitation, surface waves on a curved surface, 3685.

fluctuations in an equilibrium, J 69D3-474, 381

(1965).

interactions, unitary symmetry in photoproduction,

5834. measurements, 4850; 4998; 5085; 6024; 6487. natural, field fluctuations in the 3.0 to 0.02 cps range, 5500.

oscillations, low-frequency, effects of induced earth

currents, J 69D8-547, 1161 (1965). phenomena, natural, below 30 kc/s, 6221. propagation of, ELF, waves, 3377. properties of a plasma covered antenna, J 69D7-

530,965 (1965). properties of a uniformly magnetized electron gas, TN207.

properties of quantized relativistic electron-posi- tron gas, 6726. pulse by an expanding plasma in a conducting half- space, generation, J 68D2-327, 147 (1964).

pulse, low frequency, attenuation of the ground

wave, TN310.

pulses in a homogeneous conducting earth, propagation, 3727. pulses in terrestrial waveguides, propagation, 8961.

pulses, propagation, 4434.

signal, propagation of the ground wave; with particular reference to a pulse of nuclear origin, 8962. signals emitted from nuclear explosions to study

of long-range VLF propagation, 9099.

signals, shielding of by a thin conducting sheet, J 64D5-94, 563 (1960).

sorter, proposal, 3288B.

surface waves, approach to the classification, 5191. surface waves, investigation of plasma boundaries,

6158.

vibrations, application to the theory of waveguide

junctions, generalized variational principles, 5376. Electromagnetic, field fluctuations, natural, in the 3.0 to 0.02 cps range, 5500. plasmas, interaction, J 64D6-96, 766 (1960).

reflected from a coastline, 6881. Electromagnetic fields, dipole in the presence of a thin plasma sheet, 3828; 4351. horizontal dipole in the presence of a conducting

half-space, 4352.

lossy media, J 68D4-359, 463 (1964). radiofrequency, propagation in geological conductors, J 67D2-252, 161 (1963). Electromagnetic radiation, J 68D9-398, 989 (1964).

chorus, a high-latitude investigation of the natural very-low-frequency, 5135.
cylindrical structures, 3199. magnetic dipole with arbitrary orientation embedded in a lossless magneto-ionic medium, J 69D5-

502, 671 (1965). magneto-ionic media, J 64D5-90, 515 (1960)

.

optical frequencies, propagation, survey of the lit- erature, TN225.

response of a conducting sphere to a dipole field, 3683. Electromagnetic scattering experiments, inferring the refractive-index structure, J 69D6-521, 881

(1965). gyrotropic cylinders with axial magnetic fields, J 69D2-457, 227 (1965).

radially inhomogeneous sphere, 5325. Electromagnetic wave, electron beam interaction in the presence of static magnetic field, J 66D4-206,

439 (1962). penetration of reentry plasma sheaths, J 69D2-449,

147 (1965). plasma, harmonic currents excited, J 69D4-494,

599 (1965). propagation and relativistic damping effects in a uniformly magnetized electron-positron gas,

6727. propagation in a random medium, J 68D4-359, 455

(1964). propagation in inhomogeneous plasmas and/or magnetoplasmas. J 68D4-359, 486 (1964).

reflection from an oscillating, collision-free magneto-ionic medium, J 69D1-447, 111 (1965). Electromagnetic waves, cylindrically stratified plasma,

transverse propagation, 6511.

earth, 5586. earth's surface, propagation, 5035. fluctuating medium (II), statistical theory, Mono.-

79; J 67D3-265, 303 (1963); J 68D11-582,

1503 (1965).

infinitely long and thin conducting wire in a magneto-ionic medium, J 69D4-486, 503 (1965)

.

interface between a compressible magnetoplasma

and a dielectric, the theory of reflection, J

68D11-419, 1187 (1964).

lossy magnetoplasma, TN205; J 68D1-321, 95

(1964). low frequency, unbounded magneto-ionic medium,

approximate full wave solution, J 66D1-178,

107 (1962). note concerning the excitation of ELF, J 65D5-154,

481 (1961).

plane, propagation past shoreline, J 66D3-200, 319

(1962).

possibility of guided, in the earth's crust, 5782. propagation of, through a continuously varying

stratified anisotropic medium, J 68D4-356, 407

(1964) . reflection from thin ionized gaseous layers, J 66D1-

175, 73 (1962).

stratified media, 4623.

stratified semi-infinite medium, some approximate

formulas concerning the reflection, J 68D11-

422, 1215 (1964).

thin plasma sheet, propagation, 3728. uniformly rough surfaces, guiding, 3225 ; 3226.

vertically polarized, in a horizontally stratified magnetoplasma, propagation, J 69D5-504, 693

(1965) . Electromagnetics introduction, J 68D4-359, 436 (1964). Electromagnetism, a test for the constancy, J 69D4-

497, 623 (1965). Electromagnets, cryogenic, electrical properties of alu- minum, TN218.

Electromechanical and mechanical properties of indium

antimonide, 3632. Electrometric determination of pH, 1697A; 3520. Electromotive force, cell H2 ; Hbr(w), AgBr; Ag from

0 to 50% 4936.

Electromotive force, cells, 3521. hydrogen-silver chloride cell and the thermody- namics of solutions of hydrochloric acid in 50

wt. % methanol from 10 to 40 deg, standard,

6390. measurements of hydrogen-silver iodide cells, ther- modynamics of aqueous solutions of hydriodic

acid, 6504. standards, 6397. Electromotive forces, flows of electrolytic solutes, defi- nitions, J 66A1-144, 83 (1962).

theoretical, for cells containing a single solid or molten fluoride, bromide, or iodide, 9110; 9111. Electron, accelerators for food processing, 6727A.

affinities, atomic, 3143.

affinity of atomic iodine, 4624. attachment coefficient, hydrocarbon flame inhibitors, 5326. auroral zone, 4480. auroral zone, precipitation observed by balloons, study of geomagnetic effects, 5888. beam density of unipotential electron guns at low

voltages, J 67C4-138, 279 (1963). electromagnetic wave interaction in the presence of

static magnetic field, J 66D4-206, 439 (1962). bremsstrahlung, magnetic field micropulsations,

4158. capturing radionuclides, 4576. CRPL, density profile program: some features and

early results, 3819.

clouds, artificially produced, ionosonde observations: Firefly 1960, TN135 (PB161636).

clouds, observed with spaced ionosondes, the life- time and movement of artificially produced,

5769.

collision frequency in the ionospheric D-region, J

68D10-411, 1123 (1964).

collisions, effect, formulas of magneto-ionic theory, J 69D2-454, 191 (1965). configurations np" n' p and np'1 n' p, matrices of

spin-orbit interaction, J 67A6-239, 555 (1963).

configurations p"d and p

4 d, matrices of spin-orbit

interaction, J 69A5-361, 401 (1965). content and irregularities in the ionosphere, 3878; J 64D4-66, 335 (1960).

content, total, the ionosphere content at middle lati- tudes near the peak of the solar cycle, 5806. depleated region in the ionosphere by chemical releases, formation, 6078 ; 6079. detachment from the negative hydrogen ion by

electron impact, 3522.

devices, bibliography on the measurement of bulk

resistivity of semi-conductor materials, TN232.

devices (Soviet), tabulation of published data through June 1965, TN186; TN265.

diffraction diagram, electron energy losses in solids and their influence, 4060.

diffraction, the structure of gaseous copper II ni- trate as determined, 5800; 5801.

diffraction studies on solid a-nitrogen, 4059. distribution in the ionosphere, J 68D5-362, 589

(1964) ; 6026. emission in the field emission region, temperature

dependence, 4339. exchange collisions, interpretation of frequency

shifts, 6008; 6153. excitation in neutral Kr and Xe, 6274.

excitation, inner shell, in neutral Kr and Xe, optically observed, 6274.

field, and ion emission, Soviet research, 1955-1959; an annotated bibliography, TN75 (PB161576).

gas, uniformly magnetized, TN207.

guns, low voltage, design, 5280. guns, unipotential, low voltages, limitations on elec- tron beam density, J 67C4-138, 279 (1963). high-energy, accelerator installations, shielding for, H97.

541
hydrogen atom elastic scattering, variational treat- ment, 3904. ion collisions in oxygen, J 69D2-455, 213 (1965). interferometer studies of iron whiskers, 4061.

linacs, beam loading and beam blowup, 5211.

linacs, prebunching, 5582.

local, density in the ionosphere, possible effect of lower atmospheric divergence, 3389. microscope specimens, AI2O3, jet thinning devices for preparation, 6168. momentum transfer collisions in oxygen, J 69D2-

455, 213 (1965). monochromator, utilizing the scattering resonance

in helium, 5330. monthly, density profiles for the ionosphere, 3409. negative ion densities in the lowest ionosphere, height distribution of ratio, 6253. nuclear research, electromagnetic cross sections, 6023. photodetachment from ions and elastic collision cross sections for O, C, CI, and F, 4627. physics—the first 20 years, 5928. precipitation and ionospheric radio absorption in the auroral zones, 6733A.

precipitation, relativistic, mesosphere at subauroral latitudes, 8989. production in H"+H collisions, charge transfer, 3461.

radial functions and tangents of phase shifts for

light nuclei (Z=l through 10), tables, Mono.81.

resonance magnetometer for alternating magnetic

fields, 4628. system, correlation effects in two-and-three, 5264. systems, two, Caussian correlation functions, 6101. tube interchangeability chart, 4629. tube materials, use of a vacuum microbalance, 3349.

velocity distribution, anisotropic, for the cyclotron absorption of whistlers and VLF emissions, J 69D11-573, (1965)

velocity distributions, propagation of microwaves

through a magneto-plasma, and a possible method for determining, J 64D5-89, 509 (1960). spectrometer, high-resolution, low-energy, 6115. Electron bombardment, effect of structure of the spectra emitted by solid nitrogen, 3510. evaporator, focused-beam, 6759. isotope exchange processes in solid nitrogen, 3598.

solid acetone, 3200. spectra emitted from rare gas-oxygen solids, 3780. Electron densities, electrically short antenna for measuring, J 65D4-141, 371 (1961).

ionospheric, RF impedance probe measurements,

J 66D6-224, 641 (1962). Electron density, derivation, profiles in the lower iono- sphere using radio absorption measurements at multiple frequencies, 5277.

discrete auroral forms in the ^-region, 8913.

fixed height in the F region, 4806. ionosphere, on the continuity equation, 8912. lower ionosphere, alteration of, with ground-based

transmitters, J 69D1-445, 83 (1965). measurements in the magnetically confined arc, 6728. plane-wave, irregularities with the equatorial elec- trojet, association, 5733. temperature in dense plasmas by application of line broadening theory, 4751. variations of the quiet ionosphere, TN40-3 to 40-7 (PB151399-3 to PB151399-7) and TN40-8 to 40-12. variations of the quiet ionosphere. Summary of one year of data May 1959-April 1960, TN40-13

(PB151399-13).

Electron density profile, analysis of topside sounder

ionograms, 6025.

cylindrical plasmas from microwave refraction data, J 69D5-507, 721 (1965).

data, analysis of ionospheric vertical soundings, TN146 (PB161647).

during auroras, Z)-region, 6001.

equatorial, to 5000 km, using the incoherent scatter technique, 5336. F-region, at Puerto Rico, nighttime variations, 6222. 5000 kms, 4638. magnetic equator obtained using the incoherent

scatter technique, TN169.

Titheridge coefficients for polynomial method of deducing from ionograms, J 67D1-245, 79

(1963). topside ionograms, TN315.

Electron energy, absorption, optical properties of beryl- lium in the ultraviolet, 8925. bands in SrTi03 and Ti02 (theory and experiment), 6026A.

distribution functions in the ionosphere, calculation, 6430.

distribution in slightly ionized air under the influ- ence of electric and magnetic fields, 4626.

levels, relationship to lattice defects in reduced

rutile, 5327.

loss measurements at low temperature, 3994.

loss measurements, used for observation of optically forbidden transitions in the continuum of the rare gases, 6239.

loss spectra of solid and liquid bismuth, differences

in characteristic, 6692.

losses, characteristic, optical constants of thin

films, 6268.

losses in solids and their influence on the electron

diffraction diagram, 4060.

losses, vacuum ultraviolet, optical constants, 6267. Electron impact, dissociation of H2 +, 6706. electron detachment from the negative hydrogen

ion, 3522. excitation of optically forbidden states in the ioniza- tion continuum, 6748.

ionization of atomic hydrogen, 5328. low-energy spectroscopy, determination of electronic energy levels of molecules, 5284.

studies of aromatic hydro-carbons, 6027; 6028. study of the cyanogen halides, 3523. Electron microscopy, diffraction of aluminum oxide whiskers, 6729.

diffraction of synthetic corundum crystals. I. Pure aluminum oxide grown by the Verneuil process, 6730.

historical note on the first years, 3266A.

polymers, J 67A6-249, 625 (1963).

studies, surfaces of magnetic recording media,

5329. transmission, 4578. transmission, displacement of dislocation images

formed, 6703. Electron optical, image of a pulsed atomic beam in

flight, 5088. studies of low-pressure gases, Mono.66. study of low-density gas flow, apparatus, 3431. Electron paramagnetic resonance, primarily 3d wavefunctions of the tetrachlorocuprate ion, 6731. spectra of zinc-doped copper acetate monohydrate,

6733. spectrum of &2s-8-hydroxyquinolate-copper (11) di- hydrate, 6732. spectrum of some tris-complexes of copper, 6443. tetrahedrally coordinated copper++

: the tetrachloro- cuprate ion, 6029. Electron-positron gas, electromagnetic wave propagation and relativistic damping effects in a uni- formly magnetized, 6727.

gas, quantized relativistic, electromagnetic properties, 6726. 542
pairs, opening angles, 5546. Electron probe, analysis, X-ray, 5715. metallurgical microanalysis, 5473. microanalysis techniques, optical spectrometry, Xray fluorescence spectrometry, June 1964 to June 1965, TN272.

microanalyzer, M260-10.

Electron scattering, atomic or nuclear excitation, 6030. cross section of Ne and He, classification of resonances, 5234.

elastic, radiative tail, 6327.

elastic, screening effects, 6363. experiments, 6752. He, Ne, Ar, Kr, Xe, and Hg, elastic resonances,

6721. Electron, high magnetic field, 3524. H2, energy losses and elastic resonances, 6042.

inelastic, radiative tail, 6328.

inelastic, rare gases, determination of oscillator strengths in the continuum, 6127.

inelastic, rare gases, structure beyond the ioniza- tion limit, 5707. Electron spin resonance, Mo5t in rutile, 6031.

spectra, aged-irradiated polystyrenes, 5332. spectra of free radical intermediates formed by

reaction of polystyrene with atoms of hydrogen and deuterium, 4062.

studies: green and purple sulfur, 3561.

studies of free radicals in irradiated materials, 3200A.

studies of gamma-irradiated small molecules at 4°K and 77°K, 4063. Electronic averaging device for the adherometer, 2109A.

Calibration Center, NBS, microwave measurements,

4768.

circuit, TN266.

circuits, measurement of the dynamic performance,

Mono.83. computer design, reflection of logistics, 3858A.

computers, digital, biomedical science, 3181. computers, growth and roots, 5002. conduction in rutile (Ti02 ), 3524A.

conductivity and magnetic susceptibility, oscillatory behavior, 3276. development and production in the USSR, 4064.

digital, computer, analysis, 3722.

digital computers at the NBS, development, 332A.

digital computers—their use in science and engi- neering, 2541A.

distance measuring equipment, 3441. energies in HCO+

2, HC02 , and HCO"2, calculation, 6618. energy bands in strontium titanate, 6032 ; 6033. energy levels of molecules by low-energy electron- impact spectroscopy, determination, 5284. energy transfer in the fluorescence of nitric oxide, rotational, vibrational, 5650. equipment, non-computer, Mono.83.

excited, states of CN and the identification of transitions involved, optical detection of microwave

transitions, 6270. flowmeter system, 1011A.

fringe interpolator for an optical interferometer, 1011B.

fuze research, 441A. g factor of rubidium, 6034. maintenance, maintenance of marine electronics equipment, 6841. polarimeter techniques, M256, p. 113.

polarizabilities, ions in crystals, 5814. properties, solids, definitions and formulas, 5333. radial wave functions, light nuclei, Mono.81.

scanners, new uses of microfilm with, a progress

report on FOSDIC III, 3265A.

scanning, large radiotelescopes, 5334. scanning microscope for a spectrographic plate comparator, J 65C1-50, 1 (1961).

standards program, 3851. structure and magnetic properties of the neptunyl

ion, J 69A3-341, 217 (1965). structure of CH2 and CH3 , 3525.

susceptibilities of Stoichiometric rutile (Ti02 ), theory, 6496. thickness gage, 647A.

transport in strontium titanate, 6035. Electronically excited CN, double-resonance experiment,

4608. excited CN produced by a chemical reaction, 4818.

excited hydroxyl radicals, 4445. scanned antenna, current development, 5272. Electronics and electricity, precision measurement and

calibration, H77, Vol. I. Electronics, 4533. equipment, marine, 6841. nightglow advances, 5504. nuclear. 3673. problem, Naval, assigning quantitative values to qualitative factors, 3 142A.

radio, URSI, report of U.S. Commission 7, J 64D6-

96, 751 (1960).

Electrons, artificial heating of the, in F-region of the

ionosphere, 5204. atoms, inelastic collisions, 3436. aurora and trapped, 5735. bremsstrahlung, results of some recent transport

calculations, 9000. calculation of the radiative tail in the inelastic scattering, 5937.

characteristic energy losses, 3459.

characteristic energy losses, in carbon, 3460. charged particles, 5072. determination of the probability distribution, 5986. excitation of molecular rotation, 6061.

free, incoherent scattering, as a technique for study- ing the ionosphere and exosphere: some obser- vations and theoretical considerations, 3231A. gamma rays, and neutrons, shielding against, from

nuclear weapons. A review and bibliography, Mono.69.

helium, inelastic scattering, 6793. helium, multichannel resonances in the forward

scattering, 6875. hydrogen, scattering, application of the method of polarized orbitals, 3977. 20-keV in aluminum, 4844.

50-, 100-, 200-, and 400-keV, coulomb scattering without atomic excitation, 5270. 500-keV, large-angle inelastic scattering, 5441.

^-ionization across sections for relativistic, 6172.

K-shell, compton scattering, 4009. lower and middle ionosphere, 9071. magnetoplasma, radiation, J 69D5-510, 741 (1965). near-threshold energy, excitation of the 2P state of hydrogen, 6447. nonthermal, to auroral absorption of radio waves,

contribution, 6434.

pi, excitation, polystyrene and similar polymers by 20-KeV electrons, 5345.

polarized, and positrons by tagging technique, 6295.

positrons, tables of energy losses and ranges, 6420. precursor, ahead of cylindrical Shockwaves, 4852. scattering, atomic hydrogen, 3122. secondary, determination of the probability distri- bution of the number, 6689.

slow, by hydrogen atoms, measurement of the cross

section for elastic scattering, 5467.

slow, excitation of molecular rotation, 6747.

solids, characteristics energy losses, 5946.

solids, energy loss, 6445.

Soviet, in world markets, 2769. sub-excitation energies, anomalous transmission of rare gases, 5920. transmission and reflection of, by aluminum foils, TN187.

543
transmitted through Sapphire (A1302 ) foils, energy

spectra and angular distributions, 6043. Electrophoretic deposition of metals, metalloids, and

refractory oxides, 3526. deposits of barium titanate, 4630.

ion exclusion, ultra low-conductivity water, J

64A6-76, 527 (1960).

mobilites and surface adsorption in the polystyrene

latex — aliphatic soap system, 4631. mobility of asphaltenes in nitromethane, 5749. Electroplated silver, 4699. Electroplating, circumferentially uniform, of tube

bores, 3999.

electroless, 5323.

iron, 5431.

solute, attainment of steady state and formation of metal, speed of processes, 5049. uranium, preparation, 4856.

Electrostatic fields, ionospheric effects of, generated in the outer magnetosphere, J 69D6-515, 827

(1965).

oscillations in the ionosphere, 6346. RMS voltmeter, disclosure on, TN287.

Element, acetinide, alloys and compounds, 4738. hygrometer, barium film, 3372. program, light, combustion and reaction calori- metry of several compounds, 6640. radiosonde flights, performance of the barium

fluoride film hygrometer, 5557. Elementary analytical methods, AMS55.

considerations of the effects of multipath propagation in the meteor-burst communication, J 64D5-86, 495 (1960). derivation of time-correlation formulas for trans- port coefficients, 6036.

statistical design, 4065. transcendental functions-logarithmic, AMS55.

Elements, analytical procedures, 3902.

eight-quinolinol precipitation, 3732. hydrogen through neon, NSRDS-NBS4, Vol. I. matrix powers, 4957. multipole matrix, translation operator, 6877. seventy, arc spectra, 4274.

total photonuclear cross sections for low atomic number, 9117. vapor pressure of the chemical, 6045. Elevated super-refractive layers arising from atmospheric subsidence, climatology, 5949. Elevated temperatures, creep behavior of transparent

plastics, 3169. four methods of determining temperature sensitivity of strain gages, 6763. mechanical properties of glass, 5472. method for measuring the instability of resistance

strain gages, 5142.

optical strain gage, 192A.

preliminary studies directed toward determination

of spectral absorption coefficients of homogeneous materials in the infrared, 8954. thermal decomposition of some tert-butyl compounds, 6500. Elevation angle, antenna beam, 4493. Eleven different types of denture base materials, clinical evaluation of complete dentures made,

6637. ELF and VLF propagation research, a summary, J 64D6-96, 647 (1960). radio waves between the earth and the ionosphere, guided propagation, 6449. radio waves by a horizontal magnetic dipole, excitation, J 65D3-133, 305 (1961). waves below an inhomogeneous anisotropic iono- sphere, J 68D6-367, 693 (1964). ELF, electric fields from thunderstorms, J 64D5-77,

425 (1960).

electromagnetic waves, a note concerning the excitation, J 65D5-154, 481 (1961). LF, VLF terrestrial radio wave fields, complete mode sum, Mono.78. mode theory, TN335.

noise spectrum, terrestrial, aspects of, when near

the source or its antipode, J 69D7-532, 977. (1965).

oscillations and hydromagnetic waves in the iono- phenomena, J 64D4-71, 383 (1960).

possible application of the system loss concept, J 64D4-75, 413, (1960). propagation, electromagnetic waves, 3377. pulses in the earth-ionosphere waveguide, 4809. sphere, J 64D6-9, 650 (1960). waves below an inhomogeneous anisotropic iono- sphere, propagation, 68D1-322, 103 (1964). ELF radio waves and the influence of a nonhomogeneous ionosphere, propagation, 3690. earth-ionosphere cavity resonances and propagation, J 69D8-539, 1057 (1965). impedance characteristics, influence of source dis- tance, 3578. observed attentuation rates, J 65D5-153, 475

(1961). proceedings of 1960 conference, TN61 (PB161562).

propagation and mode theory, J 64D4-72, 387, (1960). range, natural electromagnetic energy below, J

64D4-74, 409 (1960).

Ellipsodial mirror reflectometer, J 70C2-221, 75 (1966).

Ellipsoids, ferromagnetic resonance relaxation, wide

spin wave coverage, 6068. Ellipsometer, historical development, M256, p. 7. measurements and calculation of reflection coeffi- cients from thin films, Fortran program for

analysis, TN242.

Ellipsometric measurement of anodic films on aluminum, M256, p. 213. Ellipsometry, application to electrochemical studies, M256, p. 229. application to high vacuum studies, M256, p. 245. applied to blood coagulation studies, M256, p. 335. applied to gaseous adsorption, M256, p. 255. applied to polymer adsorption, M256, p. 281. applied to precise length measurement, M256, p. 349. computational techniques, M256, p. 61. electrochemical studies, M256, p. 229. frustrated total reflection, M256, p. 349. measurement of oxidation of metals, M256, p. 131. measurement of oxide films, M256, p. 201. measurement of polycrystalline metals, M256, p. 157. measurement of surfaces and thin films, M256. measurement of the thickness and refractive index

of very thin films and the optical properties

of surfaces, J 67A4-227, 363 (1963). new instrumentation, M256, p. 97. sensitivity in use of Drude approximation, M256,

p. 83. studies of the thicknesses of adsorbed glass finishes, 6408.

theoretical treatment of inhomogeneous films, M256, p. 41. thickness of adsorbed polystyrene layers, J 67A5-

232, 431 (1963). transparent surfaces by, optical properties of thin

films; internal reflection for film covered sur- faces near the critical angle, J 68A6-307, 601

(1964). treatment of non-uniform films, M256, p. 157. use with absorbing films, M256, p. 25. Elliptic functions, Jacobian, and theta functions, AMS55. 544
integral, generalized, a note on, J 68B1-108, 1 (1964).

integrals, AMS55.

vortex ring, loealized-induction concept on a curved

vortex and motion, 6832. Weierstrass, and related functions, AMS55.

Eluent fronts in liquid soil chromatography, thermistor

for detecting, J 65C4-77, 245 (1961). Embedding of transition processes, nonsingular, within a more general framework of coupled vari- ables J 65D6-163, 595 (1961). Embossing plates from texture patterns by electro- forming methods, production, 3287. Embrittlement of high strength steels by hydrogen

isotopes, 5166. Emissibility, 5055. Emission and absorption by cavities, Kirchhoff's Law

and its generalized application, J 69B3-148,

165 (1965).

current, gauge, 0.05 % regulation of ionization, 5633.

field, Soviet research in, 1960-1963; an annotated

bibliography, TN234.

field, study of carbon monoxide on tantalum, 5133. flame photometry, 4632. forbidden (

3 2j 3 27 )de 02 bands of 02 , 1012A.

infrared, spectra of gaseous B2 Oa and B2 02 , 3579. infrared, spectrum of gaseous HB02 , 3580.

ion and field electron, soviet research, 1955-1959; an annotated bibliography, TN75 (PB161576).

lines in quiescent prominences, 4805. microscopic, field, observations of carbon monoxide

and oxygen on tantalum, 6240. oxygen, method for determination of tropospheric temperature structure from ground-based measurement, 6549.

pulsations, long-period very low frequency, 6833.

rate, calibration of five gamma-emitting nuclides, TN71 (PB161572).

regions of coronal-line, 5053. spectra between 5000 A and 6500 A, night sky, 3687. spectra of N2, 02 , and NO molecules trapped in

solid matrices, 3527. spectra of solids condensed at very low temperatures from the electrical discharge products of nitrogen and carbon monoxide or acetylene,

4066.

spectra, VLF, observed with the "Hiss recorder," TN226.

spectrometry, 4901; 6037. spectroscopy, 3528; 5368; 6734. spectrum of NCO excited in condensed discharged N2 +CO at 4.2 °K, 3684.

stabilization of thermionic diode noise sources, TN160.

studies, pitfalls in thermal, 5566. twilight sodium, 6262; 6263. work function and secondary, 5861. Emission spectrum, atmosphere, width of the micro- wave lines of oxygen and their relationship to the thermal noise, 9139. CF, 6735. infrared, of HBr excited in an electric discharge,

6800. low pressure arc source for the, of the FeO molecule, 5136. OH (=2*) in the photodissociation of H2 0, 5918. Emissions, relation between auroral and radio absorption and very low frequency, 8919. thermal, radio frequencies, potential use of passive probing of atmospheric structure, 8950. VLF and whistlers, atlas of. A survey of VLF

spectra from Boulder, Colorado, TN166

(PB181454).

VLF, mechanism for the production of certain

types, 5139. Emissivities of metals in the infrared, method of measuring, J 66C3-104, 283 (1962). Emissivity, TN267.

Emittance, TN267.

during heating in vacuum, 3158. measurements, high-temperature, investigation of shallow reference cavities, 5427.

reflectance, physical standards, 4839.

relation, to other optical properties, J 67C3-132, 217 (1963).

spectral, diffusely reflecting specimens, avoiding

errors from stray radiation in measuring,

6610. standards, thermal, 5192. thermal, ceramic oxides from 1200 degrees to 1800

degrees, equipment and method for measuring,

6863. thermal, measurements, standardization, 4935. thermal, shallow cylindrical cavities, test of analytical expressions, 6570. Emitted and reflected radiation, characteristics of soil and vegetated surfaces, 6630. Emitters, work function measurements on field, with

prescribed orientation, 9141. E-mode propagation in a plane-stratified plasma, J 69D4-488, 521 (1965). Empirical, determination of total atmospheric refraction at centimeter wavelengths by radiometric means, J 67D2-251, 153 (1963).

distribution of a random process, some properties, J 65B2-50, 117 (1961).

expression, TN259.

inference of Doppler widths, 5240. intermolecular potential for inert gas atoms, 3529.

relations for energy levels of atoms and ions, 6736.

rules for predicting ground-state spins of light

nuclei, 6038. time series analysis, an approach, J 68D9-394, 937

(1964). Emulsion, x-ray, rate dependence in solarizing commercial, 6333. Emulsions, radiographic, latensification, 6826. Enamel, dentin, and fluorapatite improved by the use

of a surface-active comonomer, 6581. Enameled cold end surface for low temperature service, 4594. Enamels porcelain, exposed for three years, effect of exposure site on weather resistance, Mono.44. exposed for 7 years at various sites, weather re- sistance, 6531. standard test for determining alkali resistance, 6393. weather resistance, BSS4.

Enamels, resistance, corrosion by alkaline solutions, 2302A. Encapsulated radium sources, calibration, correction

factors, J 66A2-145, 103 (1962). Enclosures, experimental fires, 6750. Encoding, address—a study of the double-binary key- board as a link in the machine-sorting of mail,

5903. Endfire, Mono.95.

arrays, optimum, with equal sidelobes, uniformly

spaced, directivity, J 69D9-560, 1249 (1965). End-group analysis, 4633. End-groups by reaction with C

14 -labeled cyanide, deter- mination of reducing, 6686. End plate modification of X-band TEOll cavity reso- nators, 3201. Endurance, fire, of small gypsum slabs, 6757. Energetic electrons, and the geomagnetic field, atmospheric phenomena, J 66D2-180, 127 (1962).

particles in the magnetosphere, J 68D5-363, 619

(1964). 545
Energies, anomalous transmission of rare gases for

electrons of sub-excitation, 5920. below and above the ionization energy, photolysis

of cyclobutane at photon, 8940. HCO+

2, HCO2, HCO'2, calculation of electronic, 6618. interaction and transport coefficients, Li-f-H and O + H gas mixtures at high temperatures, 5414.

ionization, singly ionized rare earths, 6814. Energy absorption of transfer coefficient, X- and gamma-ray, 4383. absorption, optical properties of beryllium in the

ultraviolet from electron, 8925. angular distributions of resultant fast protons, a study of, dissociative ionization of H2, 5300. atomic, levels and multiplet tables Si II, Si III, Si

IV, NSRDS-NBS3, Sec. 1. bands in strontium titanate, electronic, 6032; 6033.

characteristic, losses of electrons in carbon, 3460.

collisions proportional to, and arbitrary magnetic

induction, radio wave reflections at a continu- ously stratified plasma, 5623. dependence for the photodetachment of I" near

threshold, 6039. dependence of the D-D reaction cross section at low energies, J 68A6-317, 675 (1964). dependence, proportional-counter fast-neutron dosi- meters, 5335. dependent Milne problem for light gases, 6381. dissipation in standing waves in rectangular basins,

3202.

dissipation, steady flow of a viscous incompressible

fluid around a body rotating within a finite region, bounds on, 3450.

electron, distribution functions in the ionosphere,

calculation, 6430. environment in which we live, 5750. exchange, in leaf temperature, 5444; 6175. exchange in the biosphere, 4634. exchange, particle exchange reactions, classical model for the study of isotope effects, 5865.

excitation of the 2P state of hydrogen by electrons

of near-threshold, 6447. formation of the anion Frenkel pair in calcium

fluoride, 6738. function, new potential, 4787; 4788.

interaction, alkali metal with a rare gas, 4703.

(internal), entropy and enthalpy for real fluids using equations of state and specific heats, functions for the calculation. 6093. low, levels of neutral cerium (Cel), 5452. mass and a model of the loop prominence mechanism, source, 6836. natural electromagnetic, below the ELF range, J 64D4-74, 409 (1960). parameter B for strong blast waves, TN155.

photolysis of cyclobutane at photon energies be- low and above the ionization. 8940.

radiant, sources in the far infrared, 5037. requirements of mechanical shear degradation in concentrated polymer solutions, 3530.

source, radiant, on bitumen oxidation, influence, 6128. spectra and angular distributions of electrons transmitted through Sapphire (AI2O3) foils, 6043. spectra of nuclei in the 2s, lei shell, calculations, 5219. spectrum of solar cosmic rays in relation to the

radiation hazard in space, 5089. stacking fault, segregation at stacking faults and to the occurrence of phase boundaries in F. C. C. binary alloys, relation, 8988. storage, megajoule, cryogenic coil, 6667. temperature and organisms, 6044. thermal, laboratory measurement of the rate of

reaction N* + O — NO + N, 6823.

thermal, laboratory of the rate of the reaction 0

+ + 02 0/ + O, 6824.

translation, accommodation in the nickel-chlorine surface reaction, 5095. transport, in harmonic crystals containing isotopic defects, momentum autocorrelation functions,

5494. use and power demands in all-electric houses equipped with air-to-air heat pumps, 4635.

viscosity liquids, on the relative roles of free vol- ume and activation, 8920. X-ray photon albedo, 6112. Energy levels, atomic, 5094. atomic, in crystals, Mono.19.

atomic, and spectra of neutral and singly ionized phosphorus, 3144. atoms and ions, empirical relations. 6736. autoionizing atomic, He, Ne and A, 5502. complex atomic spectra, repulsion, 4278.

crystals, Mono.19.

electron, relationship to lattice defects in reduced

rutile, 5327.

electronic, molecules by low-energy electron-im- pact spectroscopy, 5284. magnetic dipole transitions in the 4p* ground configuration of singly ionized atomic bromine (Br II), 4067. multiplet tables Si 11, Si in, Si iv, NSRDS-NBS3,

Sect. 1. negative ions, identification, 6787; 8914. polarons in a magnetic field. 6040. Pr3t in the vapor state, 6737. pressure shifts in mercury, 5126.

stark, symmetric-top molecules, 5694. symmetric rotors, calculation, 3817. Ta II, J 66A2-146, 111 (1962).

vibrational-rotational, including centrifugal distortion, 4956. Wll, J 68A2-270, 207 (1964). Energy loss, electrons in solids, 6445. measurements, electron, used for observation of

optically forbidden transitions in the conti- nuum of the rare gases, 6239. microscopic and macroscopic, distributions, 3643.

spectra, electron, of solid and liquid bismuth, dif- ferences in characteristic, 6692. straggling of protons and mesons: tabulation of the Vavilov distribution, 6041. Energy losses, characteristic electron, optical constants

of thin films, 6268.

elastic resonances in electron scattering from H2, 6042.

electron, optical constants in the vacuum ultraviolet, 6267.

electrons, 3459.

electrons in solids, 5946. ranges of electrons and positrons, tables, 6420. ranges of heavy charged particles, tables, 6421. Energy transfer, effects of anharmonicity on vibrational, 6010.

electronic, in the fluorescence of nitric oxide, rotational, vibrational, 5650. resonance, delocalized versus localized pictures, 5276. theory, photosynthetic unit, 5171. theory, vibrational, critical examination, 6665.

triplet-state, from acetone to aliphatic aldehydes in the gas phase, 6513. Engineer, new responsibility of the, international standardization, 5421. Engineering and science, physical measurement, 4228. cryogenic, 5630; 5632; 5904; 6156. cryogenic of hydrogen bubble chambers, 3170. design of a console for the comparison of volt boxes, 6119.

electrical, units and constants, M268.

foreign-language dictionaries, M258.

546
key to success in, standards, 4311. materials, 5074. method for calculating protection afforded by

structures against fallout radiation, Mono.76. program, statistical, of the NBS, 6465. school of, George Washington University, metrol- ogy programs, M248, p. 199.

scientific manpower, studies, 5709. systems, M267, Paper 1, p. 1 and Paper 2, p. 11. systems, ceramics, M267.

temperature measurements in cryogenic, 5727. Engineers and scientists, trends in salaries, 5709. aspects of material behavior, significant, 4965. ceramic, systems of interest, M267, Paper 6, p. 119. cryogenics in expanding mechanical engineering,

6156. English text and picture patterns, computer interpretation, 5965. Enhancement, chemical and magnetic, perturbed lines

in the violet spectrum of CN, 5231. lunar tide in the noon critical frequency of the F2 layer over the magnetic equator, J 66D5-220,

601 (1962). Enolization reactions, TN274.

Ensemble method in the theory of irreversibility, 3531. Enthalpies and specific heats, Mono.21. Enthalpy and specific heat of nine corrosion-resistant

alloys at high temperatures, J 65C1-56, 65

(1961). entropy and internal energy for real fluids using

equations of state and specific heats, 6093. graphite from 1200 to 2600 deg K, calorimetric de- termination, 6541. polytetrafluoroethylene from 0 to 440 °C, J 69A2-

336, 149 (1965).

specific heat, and resistivity of electrical conductors

at high temperatures, high-speed (millisec- onds) method for simultaneous measurement,

6546. Entire functions, uniqueness theorem, 6574.

Entities, physical, and mathematical representation, J 65B4-60, 227 (1961). Entropies, calorimetric residual, glasses, 6830. heats of sublimation, and dissociation energies of the cesium halides, 4636. Entropy and heat changes, transition, fusion and vaporization, temperature, pressure, 5728. changes, half-cell, calorimetric determination, 5224. enthalpy and internal energy for real fluids using

equations of state and specific heats, functions

for the calculation, 6093.

excess, glass transformation, 6059. minimum, production, casimir coefficients, 3457. Environment in, fatigue failure of metals, 5761. fatigue strengths of four selected alloys, 9074. non-cubic, absence of pronounced quadrupole effects

in the nuclear resonance of Inus

, 5898. thermal, of occupied underground spaces with finite cover using a digital computer, numerical

analysis, 6236. which we live, energy, 5750. Environmental chamber, simple, rotating beam fatigue

testing machines, 5164.

characteristics of a small underground fallout shelter, 4637. chemistry, 4068.

effects, studies of, evidence regarding the mechanism of fatigue, 5343. factors in a family-size underground fallout shelter, 3532. Enzymatic, TAPPI, and colorimetric methods, determination of starch in paper, 3177. Enzyme reactions, two-intermediate, 4565. Ephi system for VLF direction finding, J 65C1-53, 43

(1961). Epimeric sugars, interconversion, TN274. Epoxy floor toppings and conductive flooring, 3303. EPR matrices, normal, 3270A.

normal EPr matrices, J 70B1-167, 47 (1960).

Equalities, U-spin, and 0ctet symmetry breaking, 6519. Equality or reciprocity of the waveguide or transmission line characteristic impedances, relation- ships between different kinds of network pa- rameters, 6343. Equation, AAT=aA, incidence, 3837. Boltzmann, surface integral form for three-body

collision, 6413. Boltzmann, theory, basis of the functional assumption, 5736. chain integral, the pair correlation function of a

fluid, numerical solutions of the convolutions- hypernetted, 5523; 5524. convergent kinetic, from the generalized master

equation, theory of irreversible processes in plasmas—derivation, 6495.

critical point, on the validity of the Lorentz-Lorenz,

8922.

electron density in the ionosphere, on the continuity, 8912.

exact, for the evaluation of a classical many-body

system cluster formulation, 5236. Fulcher, physical significance, 6828. generalized master, arbitrary initial states, 6774. generalized master, quantum-mechanical systems

to all orders in the density, 6102. generalized master, theory of irreversible processes in plasmas—derivation of convergent

kinetic equation, 6495. hydrostatic equilibrium in determining the temperature distribution in the outer solar atmosphere,

3899.

kinetic, plasma with unsteady correlations, 3239. Lamm, simple derivation of the Faxen solution, 5886. master, 4950. melting pressure, hydrogens, 4760. nonlinear, nonautonomus character, 4497. nonlinear vibration, Rayleigh's, 4197A.

precession, spinning particle in nonuniform fields, 6303.

state, apparatus for determination of, of hydrogen

at low temperatures and high pressures, J 65C4-76, 231 (1961).

state for calculating the thermodynamic properties

of helium at low temperatures, 4482.

Tait, relating volume and pressure in the study of

transitions in polymers, 6522. Equations, boundary layer, external boundary conditions, 1978A.

diffusion, correlated walk in a driving force, 6661.

flexural vibration of cylindrical rods, numerical

solution, J 64B4-39, 237 (1960). generalized master, identity of three, 6254.

linear differential, second order with a large pa- rameter, 3241. master, and Markov processes, 6847. radiofrequency magnetic permeameter, J 67C1-121,

69 (1963). second-order differential, having an irregular sin- gularity of arbitrary rank, error bounds for asymptotic solutions, 6741.

set of two-phase flow, modelling the cooldown process, formulation and numerical evaluation, TN301.

state and specific heats, functions for the calculation of enthalpy, entropy and internal energy

for real fluids, 6093. twilight spectra near, 3894. Equator magnetic, during daylight hours, evidence of a stratified echoing region at 150 km, 6055. following the high altitude nuclear explosion of July 9, 1962, observations of synchrotron radio

noise, 5528. ionospheric VHF scattering near, during the Inter- 547
national Geophysical Year, J 67D5-280, 459

(1963). nonreciprocity of propagation of VLF radio waves,

5509. Equatorial, aeronomy, introduction to the International Symposium, 5426. E belt, width, 4814.

effects, J 69D8-548, 1169 (1965).

election density profiles to 5000 km, using the in- coherent scatter technique, 5336.

electrojet, additional features of radar returns,

9014.

electrojet, association of plane-wave electron-wave

electron-density irregularities, 5733. electron density profiles to 5000 kms, using the in- coherent scatter techniques, 4638. Es, at Huancayo, additional lunar influence, 3130. F layer after sunset, instability, 5412. F-layer, daytime, 6439. ionograms, 4357. ionograms, waveguide interpretation of "temperatelatitude spread F," 3955. ionosphere, features of Es, ionization, J 68D11-427,

1237 (1964). ionospheric variations, during geomagnetic storms,

5337.

latitudes, HF propagation characteristics, 5385. region ionospheric scatter research by the NBS

during IGY, 2111A.

slant sporadic E, 4807. spread F, TN145.

spread-F motions, 4639; 5338. spread F, nature of, 4205.

Equilibria, binary cryogenic systems, apparatus to de- termine the solid-vapor, 5190. indicator acid-base, methanol-water solvent, salt

effects and medium effects, 6356. mutarotational, of monosaccharides, infrared ab- sorption spectra, J 66A1-139, 31 (1962). phase, research in systems involving the rare earth

oxides, 4221. phase, system aluminum oxide-tungsten oxide, 8935. phase, system cadmium oxide-niobium oxide, 4220.

physical, and related properties of the hydrogencarbon monoxide system, TN108 (PB161609).

physical, and related properties of the hydrogenhelium system, TN109 (PB161610).

physical, and related properties of the hydrogennitrogen system, TN110 (PB161611).

studies, phase, in mixed systems of rare earth and

other oxides, 6283. water by conductance methods, 4577. Equilibrium, bone, calcium homeostasis; blood, 6613. constants, proton-transfer reactions, 5339. helium arc, proof of the absence, 4648. hydrogen, 5067.

ion pair-quadrupole. Tetrabutylammonium bromide

in methanol-benzene mixtures, 3842. oxygen pressure and temperature, dependence of the electrical conductivity and thermoelectrical power of pure aluminum-doped rutile, 5278. pressure of oxygen over Mn^OvMnaO, at various temperatures, 6046. pressures of oxygen over MnOvMn^On at various temperatures, 6739.

relations in the binary barium oxide-niobium pentoxide, phase, J 65A4-115, 337 (1961). second viral corrections from 1500°K to 15,000°K,

tables of thermodynamic properties of air, 9055. sedimentation, second virial coefficient of polymers

in good solvents, effect of heterogeneity in molecular weight, 6251.

solid-vapor, system hydrogen-methane. 9011.

statistical mechanics, potential distribution method,

6302. ultracentrifuges, 4534.

Equipment calibration, audiovisual application, M248,

p. 195. characteristics and their relation to system per- formance for tropospheric communication cir- cuits, TN103.

cryogenic, liquid requirements, cool-down, 5450. marine electronics, 6841. measuring thermal emittance of ceramic oxides from 1200 degrees to 1800 degrees, 6863. procedure for the evaluation of total hemispherical

emittance, 3533.

processes, cryogenic, modern methods of analysis

for design, 6216.

single crystal growth from aqueous solution, J

67C1-116, 25 (1963).

single-crystal growth from the melt suitable for substances with a low melting point, J 69C3-

199, 195 (1965). weighing, examination, H94.

Equivalence of certain inequalities complementing those

of Cauchy-Schwarz and Holder, J 68B4-127, 147 (1964).

relations, approximating symmetric relations, 5926. Equivalent sites in oxide crystals, symmetry splitting

of, and related mechanical effects, 67A4-216,

281 (1963). Equivalents, metric and United States customary

weight and measure, table, M233.

^-region, on the determination of the electron density within discrete auroral forms, 8913. Er3t in LaCU, 5864. Erbium and holmium, absorption and scattering of photons, 3415. holmium, nuclear photoeffect, 5028. new odd low levels of neutral erbium, 6886. Error, additional, measuring impedance through an

adapter, 6858. binary, probability due to an adaptable fading

model, 5934. DC-RF substitution, in dual element bolometer mounts, 5871.

direction finders, antenna coupling, J 65D4-140, 363 (1961). function and Fresnel integrals, AMS55.

function of a complex variable, method for computation, 6551. NCFSK system, the effect of atmospheric noise on

the probability, 9073A.

prediction of F2 maximum usable frequencies by

world maps based on sunspot number, 3829. rate in a multiple-frequency-shift system and the output signal /noise ratio in a frequency modulation and a pulse-code modulation frequencyshift system, 4997; 5751; 6446. rates in multiple FSK systems and the signal-to- noise characteristics of FM and PCM-FS sys- tems, TN167.

realistic estimates, 4884. uncertainties associated with proving ring calibration, 9125. Error analysis, metrology, M248, p. 93. Miller's recurrence algorithm, 6047. phase-integral methods. J 69B4-157, 271 (1965); J

69B4-158, 291 (1965). standard microwave phase shifter, J 64C4-43, 261 (1960). Error bounds, asymptotic expansions of special functions in the complex plane, 6740. asymptotic expansions with an application to cylinder functions of large argument, 6049. asymptotic solutions of second-order differential equations having an irregular singularity of arbitrary rank. 6741. eigenvectors of self-adjoint operators, J 66B1-67,

1 (1962).

first approximations in turning-point problems,

5340. 548
pointwise approximation of solutions of elastic plate problems, J 67B3-99, 145 (1963). Ravleigh-Ritz approximation of eigenvectors, J

* 64B4-37, 217 (1960). symptotic expansions in turning-point problems,

6048. Errors, atmospheric refraction, of baseline-type radio tracking systems and methods of their correction, 6418." avoiding, from stray radiation in measuring the

spectral emittance of diffusely reflecting spe- cimens, 6610.

calibration, accumulation of, and their optimum

distribution, 5176.

dielectric measurements due to a sample insertion hole in a cavity, 3534. drop calorimetry due to sample container transitions, 5341. economic statistics, 4951. gearing, related to alignment techniques of the rotary-vane attenuator, 6771. induced by the atmosphere in microwave range measurements, J 68D11-426, 1229 (1964). measurements of microscopic spheres, study, 6566. range rate, and residual range, due to the troposphere, 5643. recommended standard resistor-noise test system,

4593.

rotation, rotary vane waveguide attenuators, 4488.

series-parallel buildup of four-terminal resistors, J 69C3-197, 181 (1965). systematic, 4335. systematic, measures of solar flares, 4714. systematic, physical constants, 4336; 4968. ESD Maui, Hawaii, measurements, 6050. ESR measurement of metastable atomic nitrogen in helium-nitrogen afterglows, 6742. observations of the rates of formation and reaction

of free radicals produced by hydrogen atom bombardment of polystyrene, 4070. Establishing sampling and sample preparation tech- niques in spectrochemical analysis, 6409. Establishment and maintenance of the unit of voltage

at the NBS Boulder Laboratories, 5752. Esters, 4-nitrophenyl, 3666. sulfurous, structure, 3797. Estimates of error, realistic, 4884. Estimating, experimental method of, F-region collision frequencies, 5193. order of chemical reactions, 5087. Estimation, dispersion parameters, J 66B4-82, 161

(1962).

location parameters, TN191.

one-parameter exponential model, 6743. parameters of the Hyper-Poisson distributions, 6744.

scale parameters, TN191.

variances of position lines from fixes with un- known target positions, J 65D3-129, 263

(1961). weighting factors in linear regression and analysis of variance, 6051. Estimators, optimum, parameters of negative ex- ponential distributions from one or two order

statistics, 5550. Etch pits in chromic oxide, 6745. Etched-circuit package, TN268.

Etching, thermal, and crystal growth of argon, 6670. Ethane, argon resonance lines 1067 and 1048A, photolysis, 8940A.

carbon-carbon distance obtained from infrared

spectra, 3203.

electrical fields and density in the radiolysis, 6713. high temperature, vacuum-ultraviolet photolysis, 9128; 9129. liquid-nitrogen solution, vacuum-ultraviolet photolysis, 9130.

mechanism of the photolysis, 6204. molecular parameters, 4781.

-l,l,l-d3 , radiolysis, 4876.

solid, at 77° K, vacuum photolysis, 5108. vacuum ultraviolet photolysis: molecular detach- ment of hydrogen, 4403. Ethanic, asymmetric, rotators: 1, 2-disubstituted pro- panes, NMR studies, 6223. Ethanol -water at 25° C, dissociation constant of anistic (p-methoxybenzoic) acid in the system, J 64A4-58, 351 (1960). Ether, 5544.

diethyl, hydroperoxide, 4931.

ethyl vinyl, photolysis, 4370. extraction of the elements from six molar hydrochloric acid solution, 3535. perfluorophenyl, and related polymers, J 68A3-274,

277 (1964). Ethyl acetate, photolysis of, 4 to 500°K, intramolecular rearrangements, formation of ethylene, 5424. cyanide, microwave spectrum and internal rotation, 3258. Ethyl, 1, decaborane, crystal structure, 6436.

nitrate, photolysis, primary processes, 5593. stearate-heneicosane mixture, theoretical dielectric behavior, 3881A.

vinyl ether, photolysis, 4370. Ethylbenzene, Cumene, toluene, 5788. Ethylene and propylene, pyrolysis of linear copolymers,

J 65A3-105, 221 (1961).

collisional deactivation, 9129. formation, photolysis of ethyl acetate from 4 to 500°K, intramolecular rearrangements, 5424. gamma radiolysis, hydrogen formation, 4685. mass spectrometric study of the reaction of nitro- gen atoms, 6844. nitrogen atoms with, rate of reaction, 3741. 2-pentanone, photoelemination, 6286.

photolysis, 5110. propylene copolymer, radiolytic stress relaxation, 8978. propylene copolymers: crystallinity, infrared, and

creep studies, 6052. propylene copolymers in infrared spectroscopy, de- termination of propylene, 5286. Ethylenediamines, symmetrically substituted, complex

formation between manganese (II), nickel

(II) and zinc (II) ions, 5252. Eu155 in EuO, nuclear resonance spin-echo study, 6898. Eugenol isomers, ionization constants and reactivity, J

68A6-309, 619 (1964). o-ethoxybenzoic acid and zinc oxide hydrogenated

rosin, physical properties of cements, 6290. synthesis of isomers, J 67A3-213, 253 (1963). Euler and Bernoulli polynomials, AMS55.

EuO, nuclear resonance spin-echo study of Eu15\ 6898.

Eui-Oa-In-O:! system, phase equilibria in systems involv- ing the rare earth oxides, J 65A5-123, 429

(1961). Evacuated powder insulation for low temperatures,

3204. Evaluating computer systems analysis and design work

in the Federal Government, 6053. freezing-and-thawing durability of concrete by

laboratory tests in the U. S. A., 4071. methods and ranking laboratories of measurement

in round-robin tests, 6332. Evaluation, Mono.96. automatic indexing using cited titles, M269, p. 213.

ball bearing separator materials operating sub- merged in liquid nitrogen, 3536. cesium beam frequency standard, 3424. chemical analyses on two rocks, 3205.

classical many-body system, cluster formulation of the exact equation, 5236.

clinical, of complete dentures made of eleven dif- ferent types of denture base matrials, 6637.549
color differences, 3205. convolution integrals occurring in the theory of mixed path propagation, TN132 (PB161633).

experimental, thallium beam frequency standard,

5347. function <j> ( X ) =

J*

{•" lnu+Xudw, for real values of \ J 65B4-63, 245 (1961). generalized elliptic integral, J 67B1-88, 1 (1963).

interlaboratory, procedures for tongue-tearing

strength of woven fabrics, 6147. Kacser's second order Born approximation to the bremsstrahlung differential cross section, TN81 (PN161582).

large radiation exposures by means of photo- graphic film, TN161.

lens, distortion, precise, 5783. micrometer and microscopical methods for measuring thickness of floor coverings, 4072. microwave phase measurement system, J 69C1-186,

55 (1965). NBS unit of resistance based on a computable

capacitor, J 65A3-96, 147 (1961). nature of the surfaces of hard tooth tissues by a surface activity test, 4074. oxide glasses for use as infrared materials, 3537. polarization measurements, coatings formed on

steel by cathodic protection, 5237.

precision of analytical methods involving linear calibration curves; which measure of precision, 6537. procedures, developments, polymer, 5988. program for associative indexing, M269, p. 201. quantitative metallographic, graphitic microstructures, 5606. resistance strain gages at elevated temperatures,

4073.

sensitivity of the ferroxyl test, 3341. some computational problems involving integral matrices, J 65B1-43, 15 (1961). some results on non-negative matrices, J 65B3-58, 205 (1961).

special types of partitioned matrices, J 65B1-41, 7 (1961) . total hemispherical emittance, equipment and procedure, 3533. world interval program during the IGY, 4075. Evaporated aluminum, vacuum ultraviolet reflectance

of, before and during oxidation, 5542.

film electric hvgrometer elements, J 66C3-97, 209

(1962) . films, nickel, and carbon, hydrogen reaction, 6121. metal films, thin characteristics, electrical resist- ance-strain, 5319. thermally, zinc cleavage surfaces, morphology,

6218. Evaporation, free, liquid nitrogen, measuring the cool- ing load of refrigerated vehicles, 6859. growth, theory of whisker, 6497.

kinetics and growth, surface diffusion of K and Hg

crystal whiskers, 5378. mask, magnetically retained, 5457. Evaporator, focused-beam electron bombardment, 6759. Events, auroral absorption, at the South Pole, 5889;

6565. conjugate observations of solar proton: delayed

ionospheric changes during twilight, 6655. conjugate stations, fluctuations in ionospheric absorption, 6075. cosmic noise absorption, geomagnetically conjugate

stations, 6663.

day-to-night ratio of cosmic noise absorption dur- I ing polar cap absorption events, 5743. short-duration cosmic noise absorption, in conju- gate regions at high magnetic latitude, 6375. southern auroral zone, occurrence of short-duration cosmic noise absorption, 5778. Evidence, cooperating intramolecular transition in poly- ; L-proline, 6054. J electrochemical-mechanical stress corrosion fracj ture in a stainless steel, 6746.

field-aligned ionization irregularities between 400 and 1,000 km above the earth's surface, 4640;

5342.

influence of long-term magnetic activity on me- dium frequency sky wave propagation, 9017A. laminar nature of the exosphere obtained by j means of guided high-frequency wave propagation, 4076. mechanism of fatigue from studies of environ- mental effects, 5340. oxides of nitrogen in the atmosphere of Mars, 3538.

stratified echoing region at 150 km in the vicinity of the magnetic equator during daylight hours,

6055. Evolution, amplified waves leading to transition in a boundary layer with zero pressure gradient, ; 3206.

certified reference materials, 3335. concepts and languages of computing, 4999. conference, 4998.

control system standards, 9077. designed experiments, 9078.

gas, metal surfaces during fatigue stressing, 5372. Exact and approximate distributions for the Wilcoxon

statistics with ties, 4078. conditions for the preservation of a canonical dis- tribution in a Markovian relaxation process,

6056. equation for the evaluation of a classical manybody system, cluster formulation, 5236. Faxen solution for centrifugation when sedimentation depends linearly on concentration, 6057. inductance equations for rectangular conductors with applications to more complicated geo- j metrics, J 69C2-192, 127 (1965). Examination, critical, vibrational energy transfer

theory, 6665. farm milk tanks. A manual for weights and measures officials, H98.

liquefied petroleum gas liquid-measuring devices. A manual for weights and measures officials, H99. sampling of leather for physical and chemical,

9002. weighing equipment, H94. Examples relating to the simplex method, 6058. Excess entropy at glass transformation, 6059. noise in microwave detector diodes, 4079. Exchange behavior of Kaolins of varying degrees of

crystallinity, 4641.

collision, hydrogen-hydrogen, effects, 5308; 6008.

collisions, electron, interpretation of frequency

shifts, 6153.

electron, collisions, interpretation of frequency

shifts, 6008. energy, and energy exchange, 5444. energy, and leaf temperature, 6175. processes, reaction of born trichloride with triethy- lamine-boron trifluoride, 5344.

rate, isotopic, oxygen atoms with 02 , NO, and

NO?, mass spectrometric study, 6192. Excitation, Mono.95.

acoustic waves in plasmas, J 69D4-495, 609 (1965). atomic and ionic spectra by means of high-fre550
quency discharges and sliding sparks, J 68D4-

169, 237 (1964).

atomic, coulomb scattering without, for 50-, 100-,

200-, and 400-keV electrons, 5270.

electron scattering without atomic or nuclear, 6030. ELF electromagnetic waves, a note concerning, J 65D5-154, 481 (1961). He I in the solar spectrum, 3820.

, inner shell electron, in neutral Kr and Xe, optically observed, 6274.

levels of helium, classification of two-electron,

5235.

local electric fields in the aurora and airglow,

6060. modes at very low frequency in the earth-ionos- phere wave, guide, 4642. molecular rotation by slow electrons, 6061 ; 6747. N2 and 02 by y2 and 1 Mev protons, 3207. nonequilibrium chemical, chemical pumping of

lasers, 6891.

optical radiation by high power density radio beams, J 69D1-444, 77 (1965).

optically forbidden states in the ionization conti- nuum by electron impact, 6748. 2P state of hydrogen by electrons of near-thres- hold energy, 6447.

pi electrons, polystyrene and similar polymers by 20-KeV electrons, 5345. red and green cornal lines, 4644. red lines of atomic oxygen, electric fields in the ionosphere, 5317.

solutions in a gas-stabilized arc source, 4643.

sources, new or modified, some properties, 3776.

spectral, controlled atmospheres, simple arc device, 9007.

state of coronal ions, 4919.

states, two-electron, helium, 9123.

vibrational, impact parameter treatment, 6125. VLF and ELF radio waves by a horizontal magnetic dipole, J 65D3-133, 305 (1961). Excited cyclohexane molecule and reactions of the parent cyclohexane ion, modes of decomposition of the neutral, 9080. cyclohexane molecular, neutral, and reactions of the parent cyclohexane ion, modes of decomposition of: gas-phase photolysis of cyclohex- ane in the far ultraviolet, 6770.

electronic states of CN and the identification of

transitions involved, optical detection of mi- crowave transitions, 6270. ethylene, collisional deactivation, 9129. HBr, electric discharge, infrared emission spec- trum, 6800. helium-neon gas lasers, RF, 632.8 nm, gas mixtures and pressures for optimum output power,

6769. pentape molecule, neutral, a study of decompositions of the parent ion. Gas-phase radiolysis of n-pentane, 6100. vibrational states of "N2 16 0, rotational constants,

6354.

vibrationallv, 02 formed in the flash photolysis of N02 , 6249. Excitation of electromaenetic surface waves on a curved surface, 3685. Excitations in Al, Be, and Ge, collective, observed line shapes, 6242. Excluded-volume effects, limiting shape of the distribution function of lengths of a single polymer

molecule, 8916. Exclusion of parity unfavored transitions in forward

scattering, 6062. Existence, interpolating functions, on a theorem concerning, 8907.

fe-edge connected ordinary graphs with prescribed

degrees. J 68B2-120, 73 (1964). Exosphere, J 64D6-96, 651 (1960).

ionosphere, incoherent scattering by free electrons as a technique for studying, J 65D1-97, 1 (1961); 3231A.

laminar nature, obtained by means of guided high- frequency wave propagation, 4076. observation on the medium and the phenomena of low energies, 4080. Exospheric electron density, 4419. Expanded vinyl fabrics for apparel use, CS258-63.

vinyl fabrics for furniture upholstery use, CS273-

65. Expanding mechanical engineering, 6156. Expansion, density, transport coefficients of gases, 5477.

density, viscosity of a moderately dense gas, 6679. linear thermal, elastomers in the range 300° to 76°K, 5447. momentum correlation functions, nonanalyticity of transport coefficients and the complete density, 6890.

silver iodide, thermal, 5821. thermal, 5820. thermal, Young's modulus for a one-dimensional model of a solid, coefficient. 5238. turbine, low-capacity, high-speed, gas-bearingsupported, refrigeration system, 5161. Expansions, asymptotic, application to cylinder functions of large argument, error bounds, 6049. asymptotic, special functions in the complex plane, error bounds, 6740. asymptotic, turning-point problems, error bounds,

6048. Expected influence of a localized change of ionosphere

height on VLF propagation, 4081. Experience with the Hayward linear notation system,

9018. Experiment, comparison of a new SIL prediction, 5960. constancy of the velocity of electromagnetic radiation, J 68D12-430, 1265 (1964). design and physical measurements, 4837.

electronically excited CN, 4608. measure effects of roughness on the dose rate from

fallout radiation, 5602. measurements design, physical, 5565.

rocket, involving radio reflections from the

topside of the ionosphere, 5162. versus statistical calculations and Monte Carlo

condensation of tungsten on tungsten in atomic

detail, 6650. Experimental aspects of nuclear orientation, 3772. atomic scattering factors for magnesium oxide, 6749. beam frequency standard, thallium, 5347. data on photonuclear reactions, index, M277.

data, statistical analysis, 6480. design and ASTM committees, 4082.

design, application of to the study of a test method,

5243. determination, bulk density of boiling liquid oxygen, 5346. determination of air drag on a textile yarn struck transversely by a high-velocity projectile, J 68C3-162, 177 (1964). determination of frequency ratio of optical har- monics, 4645. evaluation, thallium beam frequency standard,

5347.

fires in enclosures, 6750. ^/-values for seventy elements, 4647. method of estimating F-region collision frequencies,

5193. observations and theoretical calculations, leading

to a model for the lower ionosphere, 5350. 350-kv, 1-picofarad air capacitor, 5910. predictions for unitary symmetry (SUi), 5351. pressure-density-temperature and specific heat data

for parahydrogen, 5742. 551
proof of the absence of equilibrium in helium arc, 4648. reaction cross sections with various relations ob- tained from SU3 , comparison, 5961.

science, and mathematics, 5462.

statistics, H91; 5352.

studies of perturbations in ionospheric plasma, J 69D2-456, 219 (1965). techniques for microstructure observation, M257,

Paper 2, p. 15. theoretical investigation of the magnetic properties of iron oxide recording tape, 3539. transition probabilities for six oxygen multiplets, 6063. transition probabilities for spectral lines of sev- enty elements. Derived from the NBS tables of

spectral-line intensities, Mono.53. variables including the martensitic transformation on the low-temperature mechanical stainless

steel, 4992.

verification of the WLF superposition technique, 6064; 6751. Experimental investigation, creep deflection of ex- truded and riveted I-beams, 3540. Fabry-Perot interferometers, 5348. individual boiling and condensing heat transfer

coefficients for hydrogen, 4483. investigation of liquid hydrogen cooling by helium

gas injection, 5349.

over-all heat transfer coefficients for condensing and boiling hydrogen films, 3969.

signal strength in the area around a transmitter's

antipode, J 68D3-350, 333 (1964).

scintillation of radio stars observed at frequencies

of 223/Mc/s and 456/Mc/s from a location

close to the auroral zone, 4484. Experimental results, Anderson's theory, comparison,

6311. concerning nonreciprocal east-west VLF wave

propagation, J 68D1-310, 17 (1963). dynamics of the F-region, J 69D8-541, 1083 (1965). how people influence, 6118. investigations of tropospheric propagation, J 64D6-

96, 615 (1960). obtained for some NBS standard reference materials, TN286.

Experimental study, backscattering of 5. 3 meV alpha

particles from platinum and monel metal,

6592. beta decay using the radiations from oriented nuclei, TN93 (PB161594).

circular loop antenna immersed shallowly in a conducting medium, J 69D9-559, 1243 (1965). concerning the pressurization and stratification of

liquid hydrogen, J 65C2-58, 81 (1961) ; 3970. gyro interaction in the ionosphere, at oblique inci- dence, J 69D1-440, 25 (1965). inverted L- T-, and related transmission-line an- tennas, J 65D5-150, 449 (1961). mixed-path groundwave propagation, J 68D8-390,

915 (1964). phase stability of VLF signals, J 68D1-311, 19 (1964). phase variations in line-of-sight microwave transmissions, Mono.33. plasma sheath effects on antennas, J 69D6-516,

839 (1965). stark broadening of the Balmer line H7, 4083. Experimentation and measurement, 4649. the Fisheriana revolution in the technique of ex- perimentation, 5753. Experimenter, problems, 3286. Experiments, a He3 crystat for performing, with ori- ented nuclei, 5134. automatic indexing and experiments in information

correlation; training a computer to assign

descriptors to documents, 6509.

burning of cross piles of wood, J 66C2-90, 99

(1962).

coincidence, visible light, 5636. comparing the resistance of enamels to corrosion by alkaline solutions, 2302A.

deposition of gases at 4.29°K, TN73 (PB161574).

discussion of spin-spin relaxation formulae, 5995.

electron scattering, 6752. evolution of designed, 9078.

expertise, 6065. high magnetic fields related to optically pumped

magnetometers, 6257. information correlation and experiments in auto- matic indexing; training a computer to assign

descriptors to documents, 6509.

rate, resolved quantum levels, 4710.

self-ionizing shock waves in a magnetic field, 5353.

statistical design, 9040.

tests, statistics, H91.

Expertise or experiments, 6065. Explanation for the apparent polarization of some geo- magnetic micropulsations (Pearls), 5911. Exploding wires, 4767. Exploratory research on demineralization, 3540A.

study, low temperature X-ray diffraction tech- niques, of diborane and the products of a microwave discharge in diborane, 3208. Explorer I satellite, ionosphere: first observations from

the fixed-frequency topside sounder satellite, 6161. Explosion, high altitude nuclear, July 9, 1962, observations of synchrotron radio noise at the magnetic equator, 5528. Johnston Island, effects on the nuclear, observed

in Peru on July 9, 1962, 5316.

starfish high-altitude nuclear, geomagnetic, 6252.

volcanic, island of Bali, infrasonic observations of the May 16, 1964, 6803. Explosions, high-altitude, artificial geomagnetic and

ionospheric storms, 3270. nuclear, study of long-range VLF propagation, the use of electromagnetic signals, 9099. techniques for detection of high-altitude nuclear,

9057. thermal, 5077. Explosives and propellants, 5077. Exponential, circular, and hyperbolic functions, AMS55.

decay, simple, vibrational relaxation, 6606.

distributions, negative, one or two order statistics, optimum estimators of the parameters, 5550.

integral, sine and cosine integrals, AMS55.

model, one-parameter, 6743.

several oxides, 4084. temperature dependence of Young's modulus for Exponentials, Tchebycheff approximations, 4970. Exposure, an iron-nickel cell, galvanic currents, 5369. outdoor, effect, some properties of chrome-retanned

leather, 5311. time relations for Kossel microdiffraction photo- graphs, J 69C3-201, 213 (1965). Exposure-dose, gamma-ray standards, intercomparison

of national roentgen, 5416. Exposures of different types of radiation, 4223. Expressions, analytical, for the thermal emittance of shallow cylindrical cavities, test, 6570. Extension, Cayley's parameterization, 3117A.

cosmic noise absorption measurements to lower

frequencies, using polarized antennas, J 68D8-

384, 859 (1964). Flory-Rehner theory of swelling to an anisotropic polymer system, J 65A6-130, 485 (1961) ; 4085. Fock theory for currents in the penumbra region, J 69D9-561, 1257 (1965). low-chromosphere model to the region of origin of the UV solar spectrum, 4202. programs for calculations of great circle paths and

sunrise-sunset times, TN303.

552
stroboscopic method, 4800. theorem of Dantzig, 1621A.

Extensions of Banach's contraction theorem, J 69B3-

151, 179 (1965). Extent, finite, phase changes in very-low frequency

propagation induced by an ionospheric depression, 6247. H ii regions, 3831. Exterior corrosion of cast iron pipe, 6066. External boundary conditions in boundary layer equations, 1978A.

radiation, norms, problems in the application, 5595. recording, arterial pulse waves, improved transducer, 5401. Extinction coefficients of triplet <—» triplet transitions

in aromatic compounds, 6753. Extra low frequencies, TN335.

Extraction of phase and amplitude information from a modulated signal, digital methods, J 65D4-138,

351 (1961) Extrapolation of the orthorhombic N-paraffin melting

properties to very long chain lengths, 5000. Extraterrestrial intensity, determination of the, cos- mic radio noise at high frequencies, use of

dual-polarized broad beam antennas, 5808. Extreme rank sum test for outliers, 5529. UV, 6274. Extremely low frequencies, on the spectrum of terrestrial radio noise, J 65D6-162, 581 (1961). low values of spectral irradiance, standard, 6564. propagation, J 69D8-540, 1071 (1965).

reception at Kingston, R. I., Schumann resonances

of earth-ionosphere cavity, J 66D3-199, 313

(1964).

variations, quartz oscillators, spectrum analysis, 5683. F F and E regions in the arctic, magnetoionic phenomena

permitting observation of valley minima, 3845.

F.D.I, specifications, formulation, 5755. F atoms with CO, matrix-isolation study of the reaction, 6852. F-layer, daytime equatorial, 6439.

layer, sporadic-i? at VHF in the Far East, observation, J 65D1-107, 93 (1961). F region above HmaxF2, model of, 3651.

arctic and antarctic, universal-time control, 5103. atmosphere, thermal balance, TN162.

collision frequencies, experimental method of esti- mating, 5193. electron density at fixed height, 4806. electron density profiles at Puerto Rico, nighttime

variations, 6222. experimental results on the dynamics, J 69D8-541,

1083 (1965). ion-drag on the neutral air in the ionospheric, 9075. ionosphere, 4235; 4912. ionosphere, artificial heating of the electrons, 5204. ionosphere, solar flare effects, 4292; 4332.

irregularities studied by scintillation of signals from satellites, J 68D8-386, 881 (1964).

lower, bearing on the structure, results of a new

method for obtaining ionospheric N (h) profiles, 5678; 6380. measurements, implication of diurnal, seasonal and

geographical variations in composition of high atmosphere, 6255. photoionization heating of the atmosphere, 4224. seasonal anomaly, 5756. F scatter, theoretical study, 4812. spread, equatorial, TN145.

tests, 851A.

values, J 66A1-136, 5 (1962).

F

1" critical frequencies and maximum usable frequency

factors for use in making ionospheric radio

predictions, world maps, 3914.

equatorial, region photochemical rates, from the 1958 eclipse, 3709. layer effects as with a Doppler technique, 4446.

layer, ionospheric, time-varying model, 5894. region over Central Africa, geomagnetic activity, 4993. FM system, theoretical studies on signal-to-noise characteristics, 5812. Fabrics, expanded vinyl, for apparel use, CS258-63. high strength, burst test, 3373. high-strength, during physical tests, 3408. woven, interlaboratory evaluation of procedures for tongue-tearing strength, 6147. Fabry-Perot interferometer, high resolution millimeter wave, 3568. interferometer, oscillating, fringe pattern, J 68C2-

152, 73 (1964). interferometers, experimental investigation, 5348. resonators, spherical mirror, 5686. spectrometer for high-resolution spectroscopy and

laser work, J 68C1-147, 1 (1964).

type, simple calculus for all-dielectric interference

filters, 3766. f/6 Littrow grating spectrograph, 4085A.

Facilities, large-scale hydrogen liquefaction, 6459. standards and measurements, tomorrow's, 6508.

Facility, reactor, National Bureau of Standards, 5025. technical programs of NBS, the, possible uses of sugar grove radio telescope, 5781. Factor, correction, fast neutron reactions on sulfur and oxygen in the manganous-sulfate-bath cal- ibration of neutron sources, 9063.

electronic g, of rubidium, 6034. receiver noise, 8984. Factorial arrangement, 4415. designs and the direct products, 4650. experiments in life testing, 3209. experiments: problems in life testing, 2700A.

fractional, designs of the mixed 2 m 3" series, construction, 3484.

fractional, experiment designs for factors at two

and three levels, AMS58.

Factors affecting, adherence of ceramic coatings to

alloys, 1041B.

atomic scattering, lithium and beryllium isoelec- tronic sequences from accurate analytic Hartree-Foch wave functions, 5207. complicating, gas phase photolysis of azomethane,

5253. conversion and defined values; recommended unit

prefixes; general physical constants, M253.

conversion and physical constants, AMS55.

correlation, for impurity diffusion—Bcc, diamond, and Fee structures, 5978. creep behavior of age-hardenable alloy, 5672. experimental atomic scattering, magnesium oxide, 6749. Franck-Condon, ionization of CO, NO, and 02 , 6088. Franck-Condon, polyatomic molecules, 6087. impurity diffusion—Fee lattice, 4551. influencing the design of original-document scan- ners for input to computers, TN245.

influencing the experimental sensitivity of the Drude technique, M256, p. 83. influencing the pressures generated in multi-anvil

devices, 4552; 5266. influencing the road wear of tires, 446A.

linear regression and analysis of variance, estimation of weighing, 6051. modulation techniques for VHF scatter systems,

3210. propagation and technical, radio spectrum utilization, 6315. 553
sensitivity and spectral response of thermoelectric (radiometric) detectors, 9019. transforms to sum array, 6643. Fading characteristics observed on a high-frequency

auroral radio path, J 66D2-183, 159 (1962).

correlation bandwidth and short-term frequency

stability measurements on a high-frequency

transauroral path, TN165.

microwave line-of sight paths, 6067. model, binary error probability due to an adaptable, 5934. rate of moon-reflected UHF signals, computation and measurement, J 64D5-81, 455 (1960). Fadeouts, prolonged space-wave, in tropospheric propagation, J 66D6-227, 681 (1962).

Failla, Gioacchino, 4875. Failure, additivity, 5953. metals, fatigue, the importance of environment,

5761. Faint lines in the arc spectrum of iron (Fel), J 65A1-

80, 1 (1961). Fallout beta-rays, energy dissipated, spatial distribution, 3779. radiation from nuclear weapons, structure shielding, Mono.42. radiation, proposed experiment to measure effects of roughness on the dose rate, 5602.

shelter, underground, family-size, environmental

factors, 3532.

shelter, ventilating problem, 5068. Families, curves, analysis, J 67A3-214, 259 (1963).

distributions for hourly median power and instan- taneous power of received radio signals, J

67D6-304, 753 (1963). Family, sets, 4553.

size underground fallout shelter, environmental factors, 3532. two-parameter, hyper-Poisson distributions, 5895. Far-infrared vacuum grating spectrometer, J 67C3-131, 207 (1963). gas-phase photolysis of cyclohexane in: modes of decomposition of the neutral excited cyclohex- ane molecular and reactions of the parent

cyclohexane ion, 6770.

ultraviolet, absorption spectra of the rare gases,

line profiles, 6831. Faraday, determination of the value with a silver- perchloric acid coulometer, J 64A5-63, 381

(1960) . effect in semiconductors, 4651.

value, 6491. Farm milk tank, measurement characteristics, 4748. milk tanks, examination. A manual for weights and measures officials, H98. measurement characteristics, 4166. Fast charged particles, Monte Carlo calculations of the penetration and diffusion, 5495. counting of alpha particles in air ionization chambers, J 65C1-54, 51 (1961).

electrons from a gun source, calculated energy dis- sipation distribution in air, J 65A2-93, 113

(1961) . melting alloy forms water jacket for small klystrons, 4652. neutron dose measurements for a D-D source in water, J 68A1-250, 1 (1964). neutron, proportional-counter, dosimeters, energy

dependence, 5335. neutron reactions on sulfur and oxygen in the manganous-sulfate-bath calibration of neutron

sources, the correction factor, 9063. Fatigue, aluminum alloy, changes in influence of atmospheric humidity, J 68C2-155, 91 (1964).

bolts and bolted joints in aircraft applications, TN136.

crack on the fatigue strength of an aluminum alloy, 9073.

damage by heat treatment, 4502.

failure of, metals, the importance of environment,

5761. mechanism of, evidence regarding from studies of environmental effects, 5343. metals, effect of reactions with the atmosphere, 6009A.

properties of some high-strength steels, 3541. strength of an aluminum alloy, the effect of a

fatigue crack, 9073. strengths of four selected alloys, the effect of en- vironment, 9074.

stressing, gas evolution from metal surfaces, 4669;

5372.

test, maneuver-spectrum, programmed, of aircraft beam specimens, 5598.

testing machines, rotating beam, simple environ- mental chamber, 5164. Fault energy, stacking, to segregation at stacking faults and to the occurrence of phase boundaries in F. C. C. binary alloys, 8988. Fault isolation by semi-automatic technique, Project FIST, 6314; 8960.

isolation by semi-automatic techniques, Mono.83.

Faults, stacking, dislocations in rutile crystals grown

by flame-fusion methods, 6701. stacking, occurrence of phase boundaries in F. C. C. binary alloys, relation of the stacking fault energy to segregation, 8988. Faxen approximation to the solution of the Lamm

equation, tables for the evaluation, J 70B1-171,

95 (1966).

solution, exact, centrifugation when sedimentation depends linearly on concentration, 6057.

solution to the Lamm equation, simple derivation. 5886.

F. C. C. binary alloys, relation of the stacking fault energy to segregation at stacking faults and

to the occurrence of phase boundaries, 8988. Fee lattice, 4551.

structures, correlation factors for impurity diffu- sion—Bcc, diamond, 5978. FCO, free radical, ultraviolet and infrared spectrum,

6852. Fe I, absolute oscillator strengths, 5900. 2500 and 3200A, oscillator strengths, 8928. Feather keratin, melting and contractility, 4759. Features of Es—ionization of the equatorial ionosphere, J 68D11-427, 1237 (1964). radar returns from the equatorial electrojet, 9014.

roll, Sandstone, isotopic fractionation of uranium.

6819. Federal Government and the American Dental Association at NBS, some activities of the cooperative

dental research, 6373. Government, evaluation computer systems analysis and design work, 6053.

test methods standards, 4086. Feedpoint singularity in antenna current, infinite cylin- drical antenna, J 66D2-186, 181 (1962). Fencing, chain link, aluminum alloy, CS269-65. FeO in absorption by flash heating and kinetic spec- troscopy, 6238. Fermi model, for factor, spatial distribution, J 70B1-

170, 85 (1966). resonance in condensed CF4 and CCh, 6754. Ferric ion yield in the ferrous sulfate dosimeter, 4715. Ferrimagnetic resonance in polycrystalline ferrite and

garnet disks at L band frequencies, J 68C2-

154, 85 (1964). resonance linewidth of non-metallic magnetic materials, tables to facilitate the determination, TN173.

resonance measurements, oblate spheroids, TN221.

resonance measurements using IF substitution techniques, J 68C4-172, 255 (1964). 554
Ferrite cores and their dependence on core geometry,

flux switching mechanisms, TN90 (PB161591).

Ferrites, microwave properties, J 64D6-96, 755 (1960).

Ferroelectric switching and the Sievert integral, 5354.

Ferroelectricitv, 4653; 4654; 4663. compound Ba.BLTi.O,,, 4653. compound BhTUh.", 4654. Ferromagnetic alloys, dilute, nuclear magnetic relaxation of the impurity nucleus, 6232. resonance relaxation, wide spin wave coverage by

ellipsoids, 6068. resonance, shape-dependent effects, 5355. Ferromagnetism, TN327, TN328.

Ferrous alloys, corrosion rates of, measured by polari- zation techniques (Fe, Cr and Fe-Cr-Si), 5268.

alloys (Fe-Cr and Fe-Cr-Si), corrosion rates of, measured by polarization technique, J 66C3-

100, 245 (1962).

sulfate dosimeter, 4715. Ferroxyl test, evaluation of the sensitivity, 3341. Few observations of the perturbations in the phase of the low-frequency ground wave, J 65D4-143,

393 (1961). Fiber structure—property relationship II: macroscopic

deformations of alkylene sulfide crosslinked polycaprolactam fibers, J 66A1-143, 77 (1962). structure-property relationships; a disulfide-cross- linked self-crimping polyamide, J 65A6-131,

489 (1961).

Fibers, plastics, resins, rubbers, analysis of monomers

and polymeric materials, 3138. Fibrous macromolecules, dimensional changes, 4588. macromolecules: polyethylene, dimensional changes,

3183. polyethylene, low angle X-ray diffraction, 3606. polypeptides, polymorphism, 4848.

protein, melting and recrystallization, 4615.

proteins, nonaqueous media, the melting (contraction) and recrystallization, 5773.

silica, 4087. Field aligned E-region irregularities, identified with

acoustic plasma waves, 5356. aligned ionization irregularities between 400 and

1,000 km above the earth's surface, 4640; 5342. approximation, nature of the crystal, 5536. aspects of non-equilibrium thermodynamics in the presence of a radiation, 9015. cosmic-ray cut-off rigidities and the earths magnetic, 8990.

crystal, approximation, nature, TN67 (PB161568).

data, aperture, measured, Fresnel zone diffraction

effects at 50 Gc/sec, 5367. desorption of thorium from a field-evaporated tungsten surface, 6755.

electric, polarons, 6297.

electron and ion emission, Soviet research, 1955- 1959; an annotated bibliography, TN75

(PB161576).

emitters, work function measurements, 9141. energy levels of polarons in a magnetic, 6040. evaporated tungsten surface, field desorption of thorium, 6755.

flow, swirl chamber, 6072.

fluctuations, natural, electromagnetic, in the 3.0 to 0.02 cps range, 5500. geomagnetic, boundary under uniform external

pressure, 5045. horizontal magnetic dipole in the presence of a magnetoplasma halfspace, J 67D5-282, 501

(1963).

intensity measurements at 10.2 kc/s over reciprocal paths, J 68D1-308, 11 (1964).

ion microscope, observation: condensation of tungsten on tungsten in atomic detail, 6651.

lenses, flat, biprism method of determining the equivalent focal length, J 66C4-106, 313

(1962).

lower critical, the Ginzburg-Landau theory of su- perconductivity, 5771. measurements, air infiltrated in ten electrically- heated houses, 5359. measurements on sferics, method for determination of lower ionosphere properties, J 66D4-

208, 463 (1962). multiply scattered, statistical distribution of amplitude and phase, J 66D3-191, 231 (1962).

reflected from a coastline, nature of the electro- magnetic, 6881. retarding, energy analyzers, design, 4031.

stability of the shape of a solid cylinder growing

in a diffusion, 9034. transverse magnetic, propagation of reflected shock wave, 6316.

trial of the 1959 CIE supplementary standard observer, 6069. turbulent, higher-order skewnesses, 6783. two-dimensional probability distribution, 9122. Field emission, kinetics, 5113. microscope used for observations of carbon monoxide and oxygen on tantalum, 6240. niobium in the normal and superconducing states, 4088. observations of carbon on tantalum, 5357.

region, temperature dependence of electron emission, 4339. Soviet research in, 1960-1963; an annotated bibli- ography, TN234.

study of carbon monoxide on tantalum, 5133; 5358.

Field, magnetic, diffusion coefficients and microscopic

fluctuations of a non-equilibrium plasma, 6866. nonlinear ambipolar diffusions of isothermal plas- ma across, 6226.

stochastic theory of diffusion in a plasma, 6405. Field strength, calibration techniques at the NBS, 6756. measurements, J 69D6-96, 603 (1960). measurements in a multipath field, 4654A. measurements in fresh water, J 64D6-96, 681

(1960). variations and refractive index profiles, J 67D6-

292, 597 (1963).

Field strengths, high, implication for lasers of an

aspect of interference, 5912.

Fields, aurora and airglow, 6060. colorimetry in paraforpal, 5954.

electric dipoles in sea water—the earth-atmosphereionosphere problem, J 66D1-174, 63 (1962).

electrical, and density in the radiolysis of ethane,

effect of, 6713.

electrical, gamma radiolysis of propane, effect of, 6007.

force, boron trihalides, 6760. four critical, superconducting indium lead alloys, 6080. high magnetic, pumped magnetometers and related experiments, 6275.

nickel-rich nickel-cobalt alloys, nuclear resonance

study of hyperfine, 8900. nonuniform, precession equation of spinning particle, 6303. paraforpal, colorimetry, 5953. plane sources using point source data, 5304. reverberant sound, interference patterns, 6809. solar particles and interplanetary, 5661. Fifteen Years ACM index, 4655. Filamentous materials subjected to high speed tensile impact, 5212. Filaments, associated active dark, and their relation to 2800-Mc/s radio bursts, solar flares, 6368.

File, aspects of the NBS instrumentation literature reference, 5929. information, M269, p. 161. mechanization, TN290.

organization for a large chemical information sys- tem, TN285.

555
Files, association, M269, p. 167. Filling materials, dental, gallium-palladium alloys, 6098. materials, type, and cements, review of zinc oxide- eugenol, 6559. Film, barium, hygrometer element, 3372.

boiling design and nucleate correlations for O2 N2 and He, 8902. chemical media, dosimetry, 4606. formation and removal on gold anodes in acidic oxalate solutions, optical investigations, 6272. guard rings, metallized polymer, 6862. hygrometer, element on radiosonde flights, per- formance of the barium fluoride, 5557. photographic, evaluation of unexpectedly large ra- diation exposures, TN161.

photographic, personnel dosimetry, 5837. photographic, radiation beam mapping, 4871. polyethylene, CS227-59.

processed, determination of residual thiosulfate, J 67C3-134, 237 (1963). standards for dental radiographic, 5692.

strip printer, TN263.

thickness, measurement, M256, p. 7. thin, magnetic, materials, survey, TN247.

thin, semiconductors, contact properties, 5741. Films, anodic on aluminum, M256, t). 213.

biological macromolecules, M256, p. 297. carbon, high area, formation and oxidation, 5365.

color, camera exposure, 3120.

color, nomograph for selecting light balancing fil- ters for camera exposure, 3935. condensed: methane, thermal conductivity, 3885. dosimeter, processed in phenidone-thiosulfate monobaths, 6629. experimental sensitivity in ellipsometry measurement, M256, p. 83. formation on electrodes, M256, p. 229. growth on metals by ellipsometry, M256, p. 157. high-area carbon, formation and oxidation, 5754. hydrogen, condensing and boiling, 3969. importance of surface, 6790. inhomogeneous, by ellipsometry, M256, p. 61. irradiated plastics, structural changes, 3319. lead iodide, RH at room temperature, study of the

variation of the surface electrical resistance, 6567. measurement bv improved ellipsometer design, M256, p. 97. measurement on metals, M256, p. 131. metal, thin evaporated, characteristics, electrical resistance strain, 5319.

nickel evaporated, and carbon, hydrogen reaction

with, 6121.

oleophobic, fatigue crack propagation. 4051.

optical properties of inhomogeneous, M256, p. 41. oxide, formed on copper single crystal surfaces in pure water, 3343.

oxide, formed on copper single crystal surfaces in water, 4368; 6468. oxide on copper single crystals, M256, p. 201. passive, formed on iron single crystal surfaces in inorganic inhibitor solutions, optical studies of the formation and breakdown. 5548. photographic record, processed, for aging blemishes, inspection, H96.

thin, and surfaces, ellipsometry in the measurement, M256.

thin, characteristic electron energy losses, optical constants of, 6268.

thin, ellipsometer measurements and calculation of reflection coefficients from, A Fortran pro- gram for analysis, TN242.

thin, optical properties, transparent surfaces by

ellipsometry; internal reflection for film cov- ered surfaces near the critical angle, J 68A6-

307, 601 (1964). 556

recrystallization of anodic alumina, 8986. very thin, measurement of the thickness and re- fractive index of, and the optical properties of surfaces by ellipsometry, J 67A4-227, 363

(1963).

Filter, absorption, wavelength passed by H«198 Zeemansplit, 5858. Hg108 Zeeman, wavelength, relative to that of the 2537-A absorption line of an atomic beam,

5857. nomograph, color, 6639. switching, variable-parameter direct-current, 4457. tunable rejection types F-643 (XN-1)/URM to F-659 (NX-1)/URM and radio-frequency transmitter spectrum characteristics, 4656. Zeeman, 9148.

Filters, blue-glass, to approximate the blackbody at 6,500°K, 3988.

glass, for checking performance of spectrophotometer-integrator systems of color measurement, J 66A3-154, 203 (1962).

interference, and dielectric multilayer coatings, tolerances for layer thicknesses, J 64A6-70, 487 (1960).

interference, Fabry-Perot type, simple calculus for

all-dielectric, 3766.

light balancing, for camera exposure of color films, 3120. thermoelectric colorimeter, development, J 67C4-

143, 319 (1963).

Filtration, char, sugar colorant during, 4716. Finding, method, density expansion of transport coefficients of gases, 5477. Fingernails, strength, 9043.

Finishes, adsorbed glass, by ellipsometry, studies of the thicknesses, 6408. Finite cover, numerical analysis of thermal environ- ment of occupied underground spaces with, using a digital computer, 6236.

extent, phase changes in very-low-frequency propagation induced by an ionospheric depression,

6247.

lattice heat capacity on spin-lattice relaxation, 6718. polynomial rings, the use of, in factorization of

the general polynomial, J 69B3-153, 189 (1965).

region, bounds on the dissipation of energy in steady flow of a viscous incompressible fluid, 3450.

strain, study of stress relaxation, 5167. Finitely conducting spherical earth, diffraction of spherical radio waves, J 66D1-177, 101 (1962). Fire and smoke, doors as barriers, BSS-3.

door assemblies, BSS-3. endurance of small gypsum slabs, 6757. endurance testing in the United States, early his- tory, 4044. gypsum plasters exposed, J 66C4-113, 373 (1962). research at the National Bureau of Standards,

3211.

resistance, BSS-3.

retardant and conventional paint assemblies, sur- face flammability, 4333. retardant paints, BSS-3.

tests, comment on three papers, 5246.

tests of doors, BSS3.

tests of precast cellular concrete floors and roofs, Mono.45. Firefly 1960: ionosonde observations of artifically pro- duced electron clouds, TN135 (PB161636).

Fireplaces and chimneys, residential, survey of the

literature on safety, M252.

Fires, experimental, enclosures, 6750. hydrocarbon, extinguishing, effectiveness of some

powdered materials, 4052. First approximations, error bounds for in turningpoint problems, 5340.
bi-harmonic boundary value problem, pointwise bounds, 5572. observations from the fixed-frequency topside sounder satellite; Ionosphere explorer I satellite, 6161. order perturbation corrections, Hartree-Fock ap- proximation for helium, 5360. order phase transition, gas of long thin rods, 5361. order reaction, thermal degradation of polytetrafluoroethylene, J 64A6-73, 5134 (1960). passage times, mean, dissociation of diatomic

molecules, 5464. pulsed radio soundings of the topside of the iono- sphere, 4089.

results, NASA topside sounder satellite, 4657;

5362. run preceded by a quota, J 66B3-75, 77 (1962). spectrum of bromine, 2000 to 13000 A, wavelengths and intensities in, J 65A3-98, 159 (1961). spectrum of manganese, Mn I, J 68A1-252, 9 (1964). twenty years, APS division of electron physics, 5928. Fisher, Sir Ronald Aylmer, memorial, 4761. Fisheriana revolution in the technique of experimentation, 5753. Fisherman, parable of, 5554. FIST, project, Mono.83.

fault isolation by semi-automatic technique, 6314;

8960. Fitting refractive index data by least squares, 4090. y z= fix when the variance depends on x, J 68B2-

119, 67 (1964).

Five-attribute system of describing visual appearance,

3927. 5,6-dichloro-2-benzoxanzolinone as leather fungicide,

4036. Fixed effects (model I), 851A. frequency, 9.1 Gc, TN107 (PB161608).

frequency topside sounder satellite, first observations; ionosphere explorer I satellite, 6161. Flaking of ceramics from metals, 5100. Flame, atomic, 4445. calorimetry, fluorine, 4661. emission photometry, 4632.

fluorine, spectroscopy, some aspects, 3768. fusion methods, dislocations and stacking faults in

rutile crystals, 6701.

inhibitors, hydrocarbon, electron attachment coefficients, 5326. photometry, TN275; 4486. propagation in solids at low temperatures, 3882. propagation, surface, on cellulosic materials ex- posed to thermal radiation, J 67C3-136, 251

(1963).

reactions, atomic, involving N-atoms, H atoms and

ozone, 5206. speed of methane, effect of methyl bromide additions, J 67A1-196, 71 (1963). speed of methane, effect of perchloryl fluoride additions, J 65A6-134, 513 (1961). spraying of aluminum oxide, studies, 3801. spread measurements by the radiant panel flame- spread method, 3542. Flames, active nitrogen, exhibiting CN "tail" bands,

a spectral study, 6384.

diffusion, opposed-jet methane-air, effects of alkali metal vapors and organic halides, inhibitions

of, 5411. methyl bromide and trifluoromethyl bromide applied to the fuel and oxygen sides of the

reaction zone, inhibition of diffusion, J 65A1-

118, 389 (1961). Flammability, coated and uncoated cellulosic materials,

effect of moisture, 9076. measurements by the radiant panel methods, 4960.

surface, coated and uncoated cellulosic materials,

effect of moisture, 6714.

surface, fire-retardant and conventional paint as- semblies, 4333. Flange and bearing puller, miniature gear, TN253,

p. 7. Flare-associated bursts at 18 MC/S, 3212. Flare importance ratings—some hope for improvement,

6070.

ionization, solar, D-region of the ionosphere, VLF

phase, 5849.

solar, effect, 4531.

solar, effects in the F-region of the ionosphere,

4912.

solar, September 28, 1961, 4717.

Flares, IGY, corrections to the NBS list, 5263. IGY, normalized values of importance and area,

4784. proton, longitude distribution, 6834. Flares, solar, dark filaments and their relation to 2800-Mc/s radio bursts, 6368. Doppler studies of the ionospheric effects, 5303. geomagnetic activity, 3218. ionospheric effects, 4605. systematic errors in measures of, 4714. Flash heating and kinetic spectroscopy, observation of FeO in absorption, 6238. photolysis of N02 , concentrations of vibrationally

excited 02, 6249. photolysis spectroscopy of matrices, 6071. Flat-earth approximation, TN330.

glass, comparison of single-point and two point

loading, 5962. plate wet surface under adiabatic conditions with

respect to the Lewis relation, calculation of the temperature, 6619.

roof, insulated, constructions, 4994. roofs and heat insulation moisture effects, 3213. Fleet of aircraft, range, J 65B4-61, 237 (1961). Flexural behavior of prestressed split-beam composite

concrete sections, 6758. strength of specimens prepared from several ura- nium dioxide powders; its dependence on

porosity and grain size, and the influence of additions of titania, 3543.

Flights, element on radiosonde, performance of the barium fluoride film hygrometer, 5557. Floor and roof construction, forms for two-way concrete joist, R265-63. Floor coverings, measuring thickness, 4072.

wall, and door constructions, sound insulation, Mono.77.

Flooring, conductive and Epoxy floor toppings, 3303. Floors and roofs, precast cellular concrete, fire tests, Mono.45.

conductive, 4543. Florida kaolinite, surface area and exchange capacity

relation, 3803.

Floride, barium, refractive properties, 6340. Flory-Rehner theory of swelling to an anisotropic system, 4085. swelling theory, extension to anisotropic polymer

system, J 65A6-130, 485 (1961). Flour beetles, eight strains, mortality patterns, 6874. Flow, critical, continuous-absorption hygrometry with pneumatic bridge, 6657. dimensional changes obtained on amalgam prepared

with a standardized mechanical technic, early

strength, 6003.

elastic recovery, viscoelastometer for measurement,

J 65C1-51, 9 (1961).

field in a swirl chamber, 6072. fracture characteristics of an age-hardenable alloy, 5056. hydrogen, nitrogen and oxygen, two-phase, some

idealized solutions for choking, 5673. meters, turbine-type, in cryogenic service, 6656. 557
orifice, characteristics of liquid nitrogen and liquid hydrogen discharging into a vacuum, 5883.

stress near an interface between stratified liquids, 3544.

studies related to reactor systems, cryogenic fluid, two-phase critical, 5981. units in alkali silicate binary glasses, vitrons, J

65A2-94, 117 (1961). Flowers, paths, and trees, 8133. Flowing cryogenic fluids, solid formation, 5662.

fluids, density of instrument for the continuous measurement, 5413. Flowmeter system, electronic, 1011A.

Flowmeters, turbine, 4829.

turbine, performance characteristics, 4218. Flows, resource, aggregation in matrix models, 6588. Fluctuating atmospheric index of refraction, correction of optical distance measurements, 6660. Fluctuations, field, natural electromagnetic, in the 3.0 to 0.02 cps range, 5500. ionospheric absorption events at conjugate stations, 6075.

laser beam over 9 and 90 mile paths. 6073. microscopic, and diffusion coefficients of a nonequilibrium plasma in a magnetic field, 6866. plasma, new approach to the theory, 6883.

Fluid, approximations to the pair correlation function

for a hard sphere, 5927.

container, theoretical model for predicting thermal

stratification and self pressurization, 6572. cryogenic, two-phase critical flow studies related

to reactor systems, 5981.

flow, pressure drop in two-phase single-component,

4855. measurement standardization, 6072A.

mechanics, frequency-dependent transport coeffi- cients, 6766. pair correlation function of a, numerical solutions of the convolution hypernetted chain integral equation, 5523; 5524. parahydrogen, dielectric polarizability, 5989. parahydrogen, speed of sound, 9033.

simple, theory of the critical point. 3694. wave mode modification in liquid helium, 9136.

Fluidity, partial, regime, hypervelocity cratering data, and a crater depth model, 5396.

Fluids, anisotropic, theory, 3882. cryogenic, and their mixtures, Kihara parameters and second virial coefficients, 5434. cryogenic, bibliography of experimental saturation

properties, TN309.

cryogenic, correlation of thermodynamic properties, 6435.

elastic stress-strain relations, 6722.

elastic, thermodynamics, J 68B3-123, 103 (1964). flowing cryogenic, solid formation, 5662.

flowing, density, instrument for the continuous measurement, 5413. high-frequency elastic moduli, 6777.

real, using equations of state and specific heats, functions for the calculation of enthalpy, en- tropy and internal energy, 6093.

rigid sphere, dense, 3315.

scalar rate processes, 4320.

simple, thermal conductivity and viscosity, 6498. thermal conductivity and viscosity, 9107. thermodynamic properties, 3695A.

Fluorapatite, enamel, and dentin improved by the use of a surface-active comonomer, 6581. Fluorescence, 4658.

acidic hydrolytic fragments. Characteristics of in- soluble protein of tooth and bone, 5947. anthracene, study, excited by the giant laser, 5165.

cellulosic polymers, 3952. chemiluminescence in gases, spectroscopic investi- gations, 6386. comets as a Markov process, 4659.

nitric oxide, rotational, vibrational and electronic energy transfer, 5650. phosphorescence in biacetyl vapor, 2379A.

phosphorescence of trifluoroacetone vapor, 4353. rotational relaxation of OH radicals in flames, 3544A. spectrum of OH (

2 2

+ ), rotational transfer, 3298.

teeth, 4660. vapor phase, 5065. Fluorescent brighteners, 4705. Fluoride, barium, film hygrometer element radiosonde

flights, 5557. barium, lithium fluoride, calcium fluoride and sapphire, effect of temperature on the vacuum

ultraviolet transmittance, 6717. bromide, or iodide, theoretical electromotive forces, 9110. calcium, barium fluoride, lithium fluoride and sapphire, effect of temperature on the vacuum

ultraviolet transmittance, 6717. calcium, energy of the formation of anion Frenkel

pair, 6738. calcium, optical properties of, a redetermination of some, 5160. cubic lead, at room temperature, elastic constants,

6720.

lithium, calcium fluoride, barium fluoride and sapphire, effect of temperature on the vacuum

ultraviolet transmittance, 6717. magnesium, crystal imperfections, 6672. vibrational assignment of sulfuryl, 9102.

vinyl, improved structure determination, 3971. Fluorides on infrared transmittance of certain silicate glasses, 3193. Fluoride, atomic spectroscopy, NSRDS-NBS4, Vol. I. flame calorimetry, 4661. flame spectroscopy, 3768.

flames, spectroscopy, 4304. inorganic, compound, 4678.

ionization potential, 3593. proton NMR spectra of HBF2 , 6318. Fluoro- and bromofluoroaryl compounds by copyrolysis

of bromofluoroalkanes, preparation, J 65A3-

107, 239 (1961). Fluorocarbon elastomers, stress relaxation of v-irradi- ated, 9045. monomers, 5544. polymers, gamma irradiation of, J 65A4-117, 375

(1961). polymers, pyrolysis, J 65A3-106, 227 (1961). Fluorocarbons, aromatic, preparation and properties,

4242. aromatic: thermal stability and synthesis, 3438. Fluoroethylenes, structures and dipole moments, 4178. Fluorometer, tooth, 5826. Fluorometric demonstration of tryptophan in dentin and

bone protein, 6076. Fluoropolymers, pyrolysis, 6323. Flux averaging devices for the infrared, TN279.

density, thermal nuetron, standard of NBS, inter- comparisons, 5417. nonspattering solder, 6228. oxides of nitrogen, oxidation of asphalt, 8931. ozonation of asphalt, 6280. switching mechanisms in ferrite cores and their dependence on core geometry, TN90 (PB161591). FM and SSB radio-telephone tests on a VHF iono- spheric-scatter link during multipath conditions, 3552. Focal points, comparison of lens response for sinusoidal and square-wave targets, J 65A6-127, 465

(1961). Fock theory, extension for currents in penumbra region, J 69D9-561, 1257 (1965). Focus detector, disclosure on, TN287.

558
Focused-beam electron bombardment evaporator, 6759. Focussing, antipodal, TN182.

Foil, stainless steel, mechanical properties, 4401.

Foils, energy spectra and angular distributions of elec- trons transmitted through Sapphire (AI2O3),

6043.

Folds, chain, theoretical aspects of polymer crystalliza- tion of: bulk polymers, 6493. Food, chemistry and civilization, 3465.

frozen, transport refrigeration, a survey of re- search, 5891. perishable, refrigerated trailer bodies hauling,

3394, 3395. processing, electron accelerators, 6727A.

synthesis, 4380; 4728A.

tomorrow's billions, 6077. Forbidden lines, probabilities of, transition, J 68A1-

253, 61 (1964).

states, optically, in the ionization continuum by

electron impact, 6748.

transitions, M278.

transitions, optically, in the continuum of the rare gases by electron energy loss measurements,

6239. Force-constants, TN333.

constants and its application to H2 0, H2 CO, CH2C1, and their deuterated molecules, 6864.

direction of the, dislocation and the sign of the Burgers vector, 9070.

driving, correlated walk and diffusion equations,

6661.

fields for the boron trihalides, 6760. law, Lorentz gas with a repulsive r~', relaxation,

6345. measurements, electromotive, of hydrogen-silver io- dide cells, thermodynamics of aqueous solutions of hydriodic acid, 6504. pressure calibration at the NBS, M248, p. 13. seal evaluation, elastomeric O-rings, 5363. standard electromotive, hydrogen-silver chloride

cell and the thermodynamics of solutions of hydrochloric acid 60 wt. % methanol from 10

to 40 deg, 6390. standards of electromotive, 6397. Forced mixing in boundary layers, 3545. Forces, cells containing a single solid or molten oxide, 9111.

theoretical electromotive, for cells containing a

single solid or molten fluoride, bromide, or

iodide, 9110. Forecasts, suggestion for improving, geomagnetic

storms, 5168. Foreign countries, U.S. and certain, scientific and engi- neering manpower, 5709. Foreign developments, machine translation and information processing, bibliography, TN193.

gas broadening of the lines of hydrogen chloride and carbon monoxide, J 66A5-177, 435 (1962). gas broadening of symmetric top molecules, collision diameters and nonresonant absorption, 6227. language and English dictionaries in the physical

sciences and engineering. A selected bibliog- raphy 1952 to 1963, M258.

Forest industries, impact of new technology, 6788. Form and angular distribution, proton groups at about Q-0 Mev in the proton spectra of (d, p) reactions of heavy nuclei, 5364. Form, bounded automorphic, of dimension zero is constant, 6540. factor for the Fermi model spatial distribution, J

70B1-170, 85 (1966). normal vision, relation between normal trichromatic

vision and dichromatic vision, 6342. surface integral, three-body collision in the Boltz- mann equation, 6413.

triclinic, sodium tetrametaphosphate tetrahydrate,

6484. Formaldehyde, reaction of several aminopyrimidines, J

66A1-141, 65 (1962). Formamides, acetamides and propionamides, electrolysis, 6444. Formation and breakdown of optical studies of the, passive films formed on iron single crystal sur- faces in inorganic inhibitor solutions, 5548. anion Frenkel pair in calcium fluoride, energy of, 6738. calcium aluminate monocarbonate at 25 °C, heat, J 65A3-102, 197 (1961). complex, between manganese (II), nickel (II) and

zinc (II) ions and some symmetrically substituted ethylenediamines, 5252. constant of the 1:1 pyridine-iodine complex, 4663. decaborane, heat, J 64A6-75, 521 (1960). decay of atoms and small free radicals at low

temperatures, 4662. electron depleted region in the ionosphere by chemical releases, 6078, 6079. ethylene, photolysis of ethyl acetate from 4 to 500°K, intramolecular rearrangements, 5424.

film, and removal of gold anodes in acidic oxalate

solutions, optical investigations, 6272. He2-f and Ne2+, reaction rates, 5629. image, historical background, 6784. 1-methyl-cyclobutanol in the photolysis of 2-pentanone, 4133. NF and NF2 by photolysis, 6761. nitrogen trifluoride and the N-F bond energy, 3228.

oxidation, high area carbon films, 5365 ; 5754. polymer crystals with folded chains from dilute

solutions, 3213A.

potassium borohydride, heats of hydrolysis, J 65A2-

90, 97 (1961).

several alkyl radicals, relative rates at two carbon

positions and derived heats of: hydrogen atom

addition to olefins, 6785.

solid, flowing cryogenic fluids, 5662. titanium trichloride, heat, J 64A6-74, 515 (1960). trapping of free radicals, 3546. trimethylborane, triethylborane, and tri-n-butyl- borane, heats of combustion, J 65A3-104, 215

(1961). two isomers of difluorodiazine, 5382. xenon photosensitized, metastable nitrogen, 9144. Formed on copper single crystal surfaces in water, oxide

films, 6468. Forms for two-way concrete joist floor and roof construction, R265-63. Forms, quadratic, approximations to distribution, 6607. bounds for cofactors and arithmetic minima, 5215.

copositive and completely positive, 5262. Formula, interpolation, platinum resistance thermometers, 4545. radio ray refraction in an exponential atmosphere, J 65D2-117, 181 (1961). type AB4O9, tetragermanates, strontium, lead, and

barium, J 56A2-95, 127 (1961). Formulae, accurate intermediary orbit of an artificial

satellite, 4092. experiments, discussion of spin-spin relaxation,

5995. Formulas and definitions, electron properties of solids, 5333. Formulas, computer oriented language, 3215A.

graphs, and mathematical tables, handbook of mathematical functions, AMS55.

quadrature, for the interval (-00,000), 5881. ray-tracing for uniaxial crystals, 4880. time-correlation, for transport coefficients, elemen- tary derivation of time-correlation, 6036. Formulation and numerical evaluation of a set of two- 559
phase flow equations modelling the cooldown

process, TN301.

Formulation, cluster, exact equation for the evaluation

of a classical many-body system, 5236.

F.D.I, specifications, 5755. general, nonlinear response, large longitudinal re- tarded elastic deformation of rubberlike net- work polymers, 5442.

isotopic splitting in terms of the reciprocal kinetic energy matrix, 721A. FORTRAN, TN311; TN336.

code for calculation of eigenvalues and eigenfunctions in real potential wells, TN159.

program, TN259. program for analysis of ellipsometer measurements

and calculation of reflection coefficients from

thin films, TN242.

Forty years of dental research at the NBS, 3547. Forward scattering, electrons by helium, multichannel

resonances, 6875. exclusion of parity unfavored transitions, 6062. ionospheric, 4139. radio waves in the lower ionosphere, J 66D4-204,

409 (1962). Forward-stimulated Rrillouin scattering, optical hetero- dyne detection, 6271. FOSDIC III, a progress report. New uses of microfilm with electronic scanners, 3265A. Foundation of industrial growth, standards, 6399. Foundations, Callaway theory of thermal conductivity,

5366. goniophotometry, 3507. mechanics and thermodynamics, 3832; 3919. Four body system, 5515. carbon olefins, solid, hydrogen atom addition, 5392. chloroperofluoroheptadiene 1,6, polymers and telo- mers, 5575.

color achromats and superchromats, 3548.

critical fields in superconducting indium lead alloys, 6080. methods for predicting the durability of roofing

asphalts, 4664. methods of determining temperature sensitivity of

strain gages at elevated temperatures, 6763. nitrophenyl esters, 3666. place table decibels return loss to magnitude of voltage reflection coefficient, 4093.

selected alloys, effect of environment on the fatigue

strengths, 9074. terminal-pair networks as precision admittance and

impedance standards, 6083. Four-point and two-point probe resistivity measure- ments on rectangular bar-shaped semiconductor

samples, calculations, TN241.

Four-point probe measurement, non-uniformities in semiconductor sheet resistivity, 6082.

potential distribution in rectangular semiconductor

bar, 6301. 4050 group of comentary spectra in the acetylene-oxy- gen flame, 1184A.

Fourier coefficients of diurnal variation of /oF2, TN142

(PB161643); TN305.

integral in physical science, applications, 1267A.

integrals, TN334.

integrals, two-dimensional, and series of Hankel

transforms, a relation, J 69B3-149, 173 (1965).

series, TN334.

series, non-harmonic, 630A.

spectroscopy, construction of a Michelson inter- ferometer, J 69C1-179, 5 (1965). Fourth fundamental quantity, angle, J 66B3-78, 97

(1962) . order Hamiltonian of an asymmetric rotor molecule

of orthorhombic symmetry, J 67A4-226, 359

(1963) .

factorial designs for experiments with factors at two and three levels, AMS58.

factorial designs of the mixed 2"1 3" series, construction, 3484.

integral multiples, 5163; 5652.

order, Bessel functions, AMS55.

order differences of their coefficients, zeros of poly- nomials in several variables, J 68B3-124, 115

(1964). polynomials, order differences of their coefficients, zeros, 5864. Fractionally replicated 2"'3" designs, analysis, 3426.

replication, partial confounding, 4216. high and low molecular weight polystyrenes, ther- mal degradation, J 66A4-163, 307 (1962); J

68A2-263, 153 (1964). Fractionation, isotopic, uranium related to roll features

in Sandstone, 5433; 6166; 6819. uranium isotopes and daughter products in weathered granite and uranium-bearing sandstone, 6084. Fracture characteristics of notched tensile specimens

of titanium and titanium alloy, 4094. corrosive media, 6085. electrochemical-mechanical stress corrosion, in a

stainless steel, 6746. flow characteristics of an age-hardenable alloy, 5056. mechanisms in crystalline ceramics, Mono.59,

p. 63. pattern, modulus of rupture of glass in relation,

62'17. phenomena in polymers, 3214.

plastic flow of crystalline solids, Mono.59, p. 1. polymer, color phenomena, J 67A6-249, 625 (1963). polymer, microscopy of color phenomena, 5484. processes in polymeric solids, 6764. topography, 6086. topography of brittle polymers, 6765. Fragments, fluorescence of some acidic hydrolytic, 5947. singly charged, direct observation of decomposition multiply charged ions, 6698. Franck-Condon factor (gvV) array to high vibrational quantum numbers for the 02(B3 2"u-X3 2*g) Schumann-Runge band system, 3833. Franck-Condon factors and r-centroids for some bands

of the CO fourth positive system, 3549. high-vibrational quantum numbers:

I: N, and N

+

«, J 65A5-126, 451 (1961).

II: SiO, MgO, SrO, AlO, Vo, NO, J 66A3-

156, 227 (1962).

Ill: CN, J 68A1-254, 75 (1964). IV: NO band systems, J 68A5-300, 535

(1964). V: 02 band-systems, J 69A4-357, 369 (1965). VI: C2 band systems, J 69A5-360, 397 (1965).

ionization of CO, NO, and 0=, 6088. shape of ionization efficiency curves, 4095.

ionization of H; , HD, and D2 , J 68A6-311, 631

(1964). polyatomic molecules, 6087. Free-air ionization chambers for the soft X-ray region

(20-100 kv), 3176.

air ionization chambers, United States and Canadian, 4538. balloon borne meteorological refractometer, J 65D2-

112, 149 (1961).

electrons, incoherent scattering, as a technique for studying the ionosphere and exosphere: some

observations and theoretical considerations, 3231A. energy change with pressure of analcite reactions, 3567. evaporation of liquid nitrogen, measuring the cool- ing load of refrigerated vehicles, 6859.

field correction for condenser microphones, 6089. 560
hydroxy! radical, paramagnetic resonance, 3278. products of cyclic groups, 4918. subgroups and normal subgroups of the modular

group, 6090. volume and activation energy in the viscosity

liquids, 8920. volume, a polymer molecule with solvent interaction, statistical computation of configuration,

5695. Free hydroxyl radicals, microwave Zeeman effect, 4773. Free radical CCO, matrix-isolation infrared spectrum,

6848. chemistry, 3215. C1CO, infrared spectrum, 6851. FCO, ultraviolet and infrared spectrum of, 6852. intermediates, electron spin resonance spectra of, formed by reaction of polystyrene with atoms

of hydrogen and deuterium, 4062. NCN, infrared and ultraviolet spectra, 6850. NCN, infrared spectrum, 6802. NH», matrix-isolation infrared spectrum, 6849. trapping—theoretical aspects, 3550. Free radicals and atoms by 7 irradiations at 4.2°K,

3146. formation and trapping, 3546. formation and reaction, produced by hydrogen atom bombardment of polystyrene, ESR ob- servations of the rates, 4070. gamma-irradiated polystyrenes, 3551. irradiated materials, electron spin resonance studies, 3200A. low temperature, chemical reactions, 3463. low temperature infrared studies of the chemistry

of, 6183

small, and atoms at low temperatures, 4662. Freezing liquid parahydrogen to 350 atmospheres,

5590. point apparatus, simplified, 5887. Frenkel pair, anion, in calcium fluoride, energy of formation, 6738. Frequencies, audio, international comparison of current-ratio standards, 6594. below 300 kilocycles, propagation of radio waves

at, phase variations in V.L.F. propagation,

6284.

collision, F-region, experimental method of esti- mating, 5139. design and performance of multirange current transformer standards for audio, 9068.

different, correlation of the microwave signals on

the same line-of-sight path, 5267.

effects of connectors and adapters on accurate

attenuation measurements at microwave, 6011. F2 critical, and maximum usable frequency factors, supplementary world maps, TN2-2 (PB

151361-2). F2 maximum usable, by world maps based on sunspot number, error in prediction, 3829. jump, and electric field for diffusion in ionic

crystals, 4720.

lattice and rotational barriers for inorganic car- bonates and nitrates, 4728.

low, dielectric constant and dielectric loss of Ti02 (Rutile), 3501A.

lower, radio and ionosphere propagation, 6454. microwave absorption, oxygen molecule and the

velocity of light, 4238. microwave, two, phase and amplitude diversity in over-water transmissions, TN307.

multiple, derivation of electron density profiles in the lower ionosnhere using radio absorption measurements, 5279. plasma collision, proportional to energy in the

radio wave reflection and transmission process, TN164.

potential use of passive probing of atmospheric

structure by thermal emissions at radio, 8950.

radio astromony, protection, J 67D2-247, 99 (1963).

radio, medium and high, historical survey of fading, TN133 (PB161634).

standard and time signals from stations WWV and WWVH, M236.

zero, and the 21 test, a note on contingency tables

involving, 5150. Frequencies high, dual-polarized broad beam antennas

to determine the extraterrestrial intensity of

the cosmic radio noise, 5808.

electrical conductivity of polar semi-conductors,

3682. ionospheric propagation, 6816. prediction of ionospheric characteristics at CRPL

for skywave radio propagation, 6306. Frequencies, higher, technique for extrapolating the

1 kc values of secondary capacitance standards, TN201.

Frequency, atomic, at NBS, 4501. beam, standards, 3981. standards and clocks, 3445. standards—microwave spectroscopy, 3645. Frequency, audio, compliances of prestressed quartz, fused silica, and aluminum, 4503.

bridge, ultraglow, dielectric measurements, 3973. broadcasting, time, 5825.

calibration, high, and microwave services of NBS,

6208; 6867. cesium beam, standard, evaluation, 3424.

critical, ionospheric E'-layer on solar zenith angle and the annual variation in £-layer ionization, 6680. dependence of D-region scattering at VHF, J 65D5-146, 417 (1961). dependent transport coefficients in fluid mechanics,

6766. deviation in an FM system over a scatter-propa- gation path, 8918. emission pulsations, very low, 6833. emissions, relation between auroral radio absorption, very low, 8919. equations for the flexural vibration of cylindrical

rods, J 64B4-39, 237 (1960).

factors, maximum usable, and F2 critical frequencies, supplementary world maps, TN2-2 (PB151361-2).

fixed, 9.1 Gc, TN107 (PB161608).

functions, selected bibliography 1930 to 1957, J

66B1-69, 15 (1962).

high, Doppler technique, TN306.

high, impedance, 5042. independent antennas, J 68D4-359, 438 (1964). instantaneous, carriers plus thermal and atmospheric noise, 3627. measurements, precise frequency, power spectrum and its importance, 3856. NBS atomic, standards, 4189. occurrence of sporadic E, 1949-1959, TN117 (PB161618); 5118. polarization structure of Jupiter's decametric

emission on a 10-millisecond scale, J 69D12-

586, 1537 (1965). portable rubidium-vapor, standard, TN235.

prototype rubidium vapor, standard, 3392. pulse code modulation, shift system, error rate in multiple frequency shift system and the out- put signal noise ratio in frequency modulation,

6446.

pulse, meter, TN237, p. 1. radio, heating, open-probe thermocouple control, 6266.

radio, peak pulse power by a sampling-comparison

technique, 4754. range, brightness temperature of the atmosphere

using a bi-exponential model in the 6-45 GHz,

5935. 561
range, micropulsation, studies in geomagnetic,

5710.

ratio of optical harmonics, 4645.

relaxation, at elevated pressures, non-resonant microwave absorption, 3670.

shift system, multiple, and the output signal noise

ratio in a freauency modulation and pulse code modulation frequency shift system, 6446.

shifts due to electron exchange collisions, interpretation, 6008; 6153.

shifts, some causes of resonant, in atomic beam

machines, 5667; 5668. sky wave propagation, some evidence of the in- fluence of long-term magnetic activity, 9017A.

solar-flare, observing-time patterns, 9010. spectrum, lattice, 3931.

stability, maser, 3247A.

status, time control, 5699. temperature, dependence of relaxation; non-res- onant absorption in symmetric-top gases,

3669. topside sounder program, 5023.

transistor, meter, 3411.

utilization, uses of oblique ionograms, 6490.

variable, method, 3349A.

variations, extremely low, quartz oscillators, spec- trum analysis, 5683. Frequency, low, electromagnetic pulse, attenuation of the ground wave, TN310.

ionograms, interpretation of some features, 3235. ionospheric phenomena in radio navigation sys- tems, 4802. low frequency and very low, and time services of NBS, 6175; 6837A.

low-level, detection system, 4732. medium, radio propagation, 3605. monitoring at Boulder Laboratories, methods and

techniques, 4175. propagation, diffractive corrections to the geometrical optics, 3503. radio signal, propagation, 4863.

solar bursts and noise storms, 3609. Frequency modulation, linear, 4436. PCM-FS systems, error rates in multiple FSK

systems and the signal-to-noise characteristics, TN167.

pulse-code modulation frequency-shift system, 4997; 5751; 6446. system over a scatter-propagation path, on the optimum frequency deviation, 8918. Frequency standard, and time services, M236, 1966

Edition, ammonia beam maser, 4979. thallium beam, experimental evaluation, 5347. Frequency standards, atomic beam, 3443. atomic beam, comparison of, 3375. atomic, comparisons, 6543. atomic, via VLF radio signals, international comparison, 6810. cesium beam atomic time, 6626. cesium beam resonators, 4416. Frequency and time broadcast services of National Bureau of Standards, 4665.

calibration services at the Boulder Laboratories of NBS, M248, p. 37. constant (1963), 5505. interval standards and measurement, progress in the United States during the last three years, J 64D6-96, 592 (1960). standards, 6091. United States, national standards, 3658. Frequency, very low, average decay laws, 4505.

direction-finding, ephi system, J 65C1-53, 43

(1961). earth-ionosphere wave guide, 4642. phase observations of the ionospheric effects of the solar flare of September 28, 1961, 5119. 562

propagation, 5121. propagation induced by an ionospheric depression

of finite extent, phase changes, 6247. propagation, theory, 4713. very-low, transmission, transequatorial reception,

6510. Frequency-shift-keying systems and the out-put sig- nal-to-noise ratio in frequency-modulation and

pulse-code-modulation-frequency-shift systems,

error rates, TN167.

Fresh concrete, predicting compressive strength from

the properties, 5994. Fresnel integral, computation, TN224.

integrals, error function, AMS55.

region, analysis of linear arrays focused J 69D7-

533, 989 (1965). region fields of circular aperture antennas, J 65D2-

111, 137 (1961). zone diffraction effects, at 50 Gc/sec, determined from measured aperture field data, 5367. zones and lower ionosphere for elevated antennas

over a spherical earth, radiation patterns, Mono.38.

Friction, internal, caused by jumping of point defects

in crystals, 4964.

internal, rutile containing point defects, 6148. moving ion, dielectric, 5292. rotating dipole, dielectric, 5293. Frictional and conformation properties of polystyrene

in dilute solutions, 4544. Fringe pattern of an oscillating Fabry-Perot inter- ferometer, J 68C2-152, 73 (1964). Fringes, interference, long path difference using He- Ne laser, 5418. mercury-198 and a path difference of 2000 mm,

3583. Fritz Peak Observatory, methods of calibration for airglow photometers, 5480. Frostbite: signs, prevention, and treatment, 6092. Frozen food transport refrigeration, survey of re- search, 5891. products from the nitrogen microwave discharge, magnetic study, 3246.

radicals, dynamic stability, description and appli- cation of the model, 3190.

radicals, dynamic stability, formal theory of the model, 3191. Frost phenomena on a cryo-surface, analysis, 5917. Frustrated total reflection, M256, p. 349. Fuel ash contaminants, corrosion of type 310 stainless

steel, 3168.

diesel, use of 2,2,4,4,6,8,8-heptamethylnonane, 3879. oxygen sides of the reaction zone, inhibition of

diffusion flames by methyl bromide and tri- fluoromethyl bromide, J 654-118, 389 (1961).

Fuels, kerosine, 4785. Fulcher equation, physical significance, 6828. Fully hardened steels, II. Gage blocks of superior stability, 6096. Function, attenuation, propagation over a flat layered ground, 5882. correlated color temperature, spectral distribution

of typical daylight, 6383; 9027. determination of work, from the ratio of positive

to negative surface ionization of an alkali halide, 9069.

distribution, linear velocity-gradient term in time- dependent pair, 5448.

error, of a complex variable, method for computation, 6551.

fluid, pair correlation, numerical solutions of the convolution-hvpernetted chain integral equation, 5523; 5524. hard sphere fluid, approximations to the pair correlation, 5927. emmittance, with two negative impedance converters, 4966.
lengths of a single polymer molecule with ex- cluded-volume effects, on the limiting shape

of the distribution, 8916. measurements, work field emitters with prescribed

orientation, 9141. mechanical response, 4421. normal, Tauberian, 4417. note on the partition, 6230.

potential, Born-Maver, as applied to the crystalline alkali halides, 5145. Riemann zeta, AMS55.

secondary emission, work, 5861. *W=

^|J* ! euinu+xudM, evaluation for real values of X, J 65B4-63, 245 (1961). transport theory, Wigner, 4929. Functional and design problems of the NBS RF vol- tage bridge, TN123 (PB161624).

assumption, basis, theorv of the Boltzmann equation, 5736. Functions, Airy, Tabulation, TN228.

analog, neuron model, 4431. asymptotic solutions of second-order differential equations having an irregular singularity of rank one, with an application to Whittaker,

8910.

Bessel, fractional order, AMS55 . Bessel, integer order, AMS55.

calculation of entropy, enthalpy and internal ener- gy for real fluids using equations of state and

specific heats, 6093. color-matching, 5954.

confluent, hypergeometric, AMS55.

Coulomb wave, AMS55.

electron energy distribution, in the ionosphere,

6430.

electron radial, and tangents of phase shifts for

light nuclei (Z-l through 10), tables, Mono.81.

entire, uniqueness theorem, 6574. frequency, Mono.96

Gaussian correlation, two-electron systems, 6101. generalized, symmetric matrices. 6773. hypergeometric, AMS55.

Jacobian elliptic, and theta functions, AMS55.

large argument, error bounds for asymptotic ex- pansions with an application to cylinder, 6049. Legendre, AMS55.

Mathieu, AMS55.

miscellaneous, AMS55.

modular, construction and application of a class, 3166. momentum autocorrelation, and energy transport

in harmonic crystals containing isotopic defects, 5494. nonanalyticity of transport coefficients and the complete density expansion of momentum correlation, 6890. normal, the Montel property, and interpolation

in H<°, 5512. parabolic cylinder, AMS55.

prescribed at equally spaced points, optical approximation, J 65B2-47, 99 (1961).

probability, AMS55.

related and Weierstrass elliptic, AMS55.

special, complex plane, error bounds for asymptotic expansions, 6740. spheroidal wave, AMS55.

Struve, and related functions, AMS55.

theorem concerning existence of interpolating,

8907.

time-correlation, and transport coefficients in statistical mechanics, 9116. wave, and oscillator strengths for the lithium

iso-electronic sequence, 5856. Fundamental and satellite band origins, determination

from. Spin-orbit coupling constant of nitric oxide, 6387. approach to the establishment of pH standards, 362A.

quadrupole, of molecular hydrogen rotation-vibration interaction correction, 6144.

solution and Huygens' principle for decomposable

differential operators, 9079. spectroscopic data, 6772. Fundamentals of measurement, 5368. modern dimensional metrology, 3773.

vibrational, of CFsN- from the ultraviolet absorption spectrum, 9131. Furnace for themocouple calibrations to 2,200 °C, J 66C3-101, 255 (1962).

solar, metal oxides, 3432. X-ray diffractometer, 4859. X-ray difffractometer, improved sample holder, 5400. Furniture upholstery, vinyl fabrics, CS273-65. Further analysis of propagation of plasma waves in a "spoke-wheel" magnetic field, J 69D9-556, 1227

(1965). analysis of the modulated subcarrier technique of attenuation measurement, 6094. extension of Cayley's parmeterization, 3117A.

note on "sweepers," 3381. observations of synchrotron radiation decay, 6095. studies in the annealing of a borosilicate glass, J 70A2-390, 147 (1966). Fuse for load protection, triggered, 6512. Fused-salt systems, electrodes for, observation on ref- erence, 5526.

salt systems, observations on reference electrodes, 5514.

silica, and aluminum, audiofrequency compliances

of prestressed quartz, 5931. sodium chloride, 4958. systems, electrode potentials, 6022; 6021; 6724. systems, membrane potentials, electrode potentials, 5321. Fusion, polymer networks formed from linear poly- ethylene: Effect of intermolecular order, 3553. vaporization, temperature, pressure, heat, and

entropy change of transition, 5728. Future, electrodeposition of alloys, present and past, 6725. measurement—R & D, 6855. measurement system, 8930. needs in shielding research and theory, 3554. present of astrophysics and its effects on industry

in Colorado, 6470. Fuze, electronic, research, 441A. G G factor, electronic, rubidium, 6034. Gage, electronic thickness, 647A.

linear strain, accelerometers used in telemetry, general characteristics, TN150.

piston, pressure measurements, reduction of data, Mono.65.

strain, optical, for use at elevated temperatures, 192A.

strain, readings, 3601.

strain, research at NBS, 5702. Gage blocks, development of stable, 4348. method of measuring, J 64C3-37, 173 (1960). superior stability. Attainment of ultrastabilitv, 6097. superior stability. Fully hardened steels, 6096. superior stability: initial developments in materials and measurement, J 64C3-38, 175 (1960). Gages, measuring the thickness of chromium on the in- ternal surface of small-bore tubes, 3555.

resistance strain, 4516. 563
resistance strain, elevated temperatures, 4073;

4172.

strain, elevated temperatures, four methods of de- termining temperature sensitivity, 6763.

strain, resistance, elevated temperatures, 4073;

4172. vacuum, calibrating, 4952. Gain, path antenna, and comments on properties of 400 mcps long-distance tropospheric circuits, 5555. Galactic magnetism, stellar, 5701. Galactose, 4475. Gallium, hard, comments on use and preparation, 4296. palladium alloys as dental filling materials, 6098. substituted yttrium iron garnet, nuclear magnetic

resonances of Gtl Ga and n Ga, 6234. substituted yttrium iron garnet, nuclear resonance

study, 6899. Gallium alloys, hard, detailed techniques for preparing and using, TN140 (PB161641).

hard, for use as low contact resistance electrodes and for bonding thermocouples into samples,

3563. Galvanic currents observed, during outdoor exposure of an iron-nickel cell, 5369. Galvanomagnetic and thermoelectric coefficients of tet- ragonal crystalline materials, J 67A4-218, 293

(1963). Galvanostalametry, new technique based on the negative

of liquids for investigating electrochemical phenomena at an electrode, 5370. Games, associated with renewal process, 4666. completely mixed, recognition, J 67B1-90, 23 (1963). Gamma, cobalt-60, radiation in air ducts, TN74

(PB161575).

dicalcium silicate, crystal structure, 6673. emitting, five nuclides for emission rate, TN71

(PB161572).

function and related functions, AMS55.

irradiated cellulose, electron spin resonance, 5331. irradiated small moleculars at 4°K and 77 °K, elec- tron spin resonance studies, 4063. irradiations at 4.2 °K, atoms and free radicals, 3146. lower case-irradiated fluorocarbon elastomers, stress relaxation, 9045.

(n) cross section of lead and bismuth, 3834.

sources, sealed, protection against radiations, H73. Gamma irradiation, fluorocarbon polymers, J 65A4-117,

375 (1961). hexafluorobenzene, J 64A4-49, 269 (1960).

liquid and solid oxygen, 4096. polytetrafluoroethylene in chlorine, 5371. Gamma radiation, alkali treatment, influence of, Pyrolysis of polytrifluoroethylene, 6324. chemical structure of plastics, 4048.

collagen, 3197. Gamma-radiolysis, azomethane, vapor-phase, 4404. ethylene, hydrogen formation, 4685. propane, effect of electrical fields, 6007. Gamma ray, attenutation, 4668. backscattering, Monte Carlo calculations, 3654.

distribution from oriented cerium-141, J 66A4-165,

317 (1962).

distribution from oriented cerium-141 and its application to thermal contact at low temperature, 5757. dosimetry, neutron-insensitive proportional counter,

3662. exposure-dose standards, intercomparison of national roentgen, 5416. photographic X- dosimetry, 286A.

point-source, automatic, design and statistical procedures, J 70C2-219, 53 (1966).

radiolysis of methyl acetate and acetone, 4350. spectrometers, TN276.

X- energy absorption of transfer coefficient: tabulations and discussion, 4383.

Gamma rays, from neutral particle decays, 4825. neutrons, and electrons, shielding against, from nuclear weapons. A review and bibliography. Mono.69.

neutrons, image source technique for calculating

reflection, 6593. neutrons, mixtures of, measurement of absorbed

dose, H75.

photovoltaic effect produced in silicon solar cells, J 64A4-52, 297 (1960). scattered cesium 137, attenuation, 3147.

scattering, by nuclei, TN83 (PB161584).

velocity, using the Mossbauer effect, 4763. x rays, and neutrons, standards, instruments and measurement techniques, H85.

Gap, acceptance functions on pedestrain queues, effect of distribution, J 68B1-113, 31 (1964).

sphere, impulse sparkover, voltages for a 200 cm,

5674. Garnet, gallium-substituted yttrium iron, nuclear magnetic resonances of C0 Ga and ^Ga, 6234. nuclear resonance study of gallium-substituted yt- trium iron, 6899. Gas, analyzer, thermal conductivity, 3760. atom with a cold surface, collision, 3472. atoms calculated in a central potential model, 4367. atoms, inert, empirical intermolecular potential, 3529. bearing-supported expansion turbine, low-capacity, high-speed, a refrigeration system incorporating, 5161. bubbles on the formation of pores, 3340. chromatographic determination of the moisture

content of grain, 6768. chromatography, analysis of methyl methacrylate

copolymers, 3427. chromatography, analysis of pyrolyzates of poly- styrene and poly (methyl methacrylate), 3974. counters, compensated internal, standardization of gaseous radionuclides, 3745. counting, proportional, recalibration of the NBS

carbon-14 standard by Geiger-Muller, 3743. discharge tube, temporal development of currents, numerical computation, J 67B1-92, 41 (1963).

dry, operation of ball bearings at cryogenic temperatures, 4610.

electron-positron, electromagnetic wave propagation and relativistic damping effects, 6727.

evolution, TN275.

evolution from metal surfaces during fatigue,

stressing, 4669; 5372.

flow, low-density, apparatus for electron optical study, 3431.

foreign, broadening of symmetric top molecules,

collison diameters and nonresonant absorption,

6227. helium, velocity of sound, 4465. imperfect, topological derivation of the Mayer

density series, 3889.

injection, helium, experimental investigation of

liquid hydrogen cooling, 5349.

ionized, 5172. interplanetary, hydrogen radiation in the night sky, 3234.

laser, dependence of power output, length and rate

of excitation of the discharge, 5277.

lasers, breadth of decay quanta, 6615.

lasers, RF excited helium-neon, at 632.8 nm, gas mixtures and pressures for optimum output power, 6769.

liquefied petroleum, liquid-measuring devices, ex- amination. A manual for weights and measures officials, H99.

Lorentz, with a repulsive r"

s force law, relaxation, 6345. 564
lubricated bearings to a miniature helium expansion

turbine, 4981. lubricated bearings with inherent orifice compensation using nitrogen and helium gas, load carry- ing capacity, TN115 (PB161616).

matrices, solid rare, absorption spectra of magnesium and manganese atoms, 3811 A. measurement, and other services of the NBS, 5373. microwave, interactions, 4680. mixtures and pressures for optimum output power

of RF excited helium-neon gas lasers at 632.8 nm, 6769. mixtures, Li+H and O+H, at high temperatures,

interaction energies and transport coefficients, 5414. moderately dense, density expansion of the vis- cosity, 6679. nitrogen and helium, load carrying capacity of gaslubricated bearings, TN115 (PB161616).

oxygen, rare, solids during electron bombardment,

spectra, 3780. quantized relativistic electron-positron, electro- magnetic properties, 6726. Rayleigh and Lorentz, relexation of the hard sphere,

5540.

solid rare, matrices, absorption spectra of magnesium and manganese atoms, 4343.

stabilized arc as an emission source for the measurement of oscillator strengths, a study. Determination of some relative ^/-values for Fei, J 67A6-240 561 (1963).

stabilized arc source, 4643.

static interplanetary, and expected emission lines from this gas, ionization, 3591.

studies, high temperature, arc source, 3980. suppression at high temperature of effects due to

statistics in the second virial coefficient, 9051. target for D-D neutrons, low scatter high current,

3610. thermodynamic functions and isotope exchange

functions for the diatomic hydrides, deuterides,

tritides, Mono.20. thermometer, 4096A; 4429; 6879. thermometry, 4097. thin rods, long, first order phase transition, 5361. uniformly magnetized electron, TN207.

Gas phase, 5032. chromatography for rapid determination of car- bonate at low levels, 5105.

liquid and solid, photolysis of dimethylmercury, the

reactions of methyl radicals, 5787. PVT measurement, rugged null-type pressure

transducer, J 69C1-182, 27 (1965).

triplet-state energy transfer from acetone to ali- phatic aldehydes, 6513. Gas phase photolysis, ozomethane, complicating factors, 5253. cyclohexane in the far ultra-violet, 6770 ; 9080. methyl iodide. Reactions of hot methyl radicals with added organic compounds, 6099. Gas-phase radoiolysis, hydrocarbons, H2-transfer reactions, 6776. isobutane, 5374. n-butane, 5375. n-pentane. A study of the decompositions of the parent ion and neutral excited pentane molecule, 6100. propane, 4670; 5758. propane. Effect of pressure and added inert gases,

6448. proton transfer reactions, 6320. Gaseous AhO, infrared spectrum and structure, 6133. B2O3 and B2O2, infrared emission spectra, 3579. copper II, structure, nitrate as determined by elec- tron diffraction, 5800; 5801. discharges, infrared study, 3203A.

H atom-condensed olefin system; surface reactionolefin diffusion model, 4745. HBO2, infrared emission spectrum, 3580. heat conduction at low pressures and temperatures,

3216.

layers, thin ionized, reflection of electromagnetic waves, J 66D1-175, 73 (1962). LiO, Li,.0, and LUO?, infrared spectra, structures and thermodynamics, 5763.

liquid carbon monoxide, thermodynamic property

vales, TN202.

perfluorocyclobutane, heat capacity, 727A.

pollutants of air, isolation, identification, and esti- mation, 251B.

state, nonresonant microwave absorption and electric dipole moment of NO, 3266. Gases, absorption spectra of diatomic molecules in liquid and crystalline, 5901. added inert, gas phase radiolysis propane, effect of pressure, 6448. anisotropic ionized, irreversible power and radiation resistance of antennas, J 69D10-565, 1313

(1965).

classical, three-particle scattering operator, 5541. compressed, 4525, 4526. compressed, cavity resonators for dielectric spectro- scopy, 3156. compressed, collision induced microwave absorption,

5952. condensed, low temperatures, optical measurements

on thin films, 3275.

dense, solubility of solids, TN316.

deposition, 4.2°K, TN73 (PB161574).

dilute bose, with repulsive interactions at low temperature, binary mixtures, 5213.

eleven, and three metals, a comparison of two

melting-pressure equations constrained to the

triple point, TN183.

4° to 20° K, spectra of C2 in solidified, 9025.

4° to 20° K, spectra of C3 in solidified, 9024.

4.2 "K, experiments on the deposition, TN73

(PB161574).

47.7 gigahertz, absolute determination of refractive

indices, 6576A.

high temperature, ionization, 5428.

inelastic electron scattering from rare; determination of oscillator strengths in the continuum,

6127.

investigation, evolved during firing of vitreous coat- ings on steel, 745A.

ionized, slightly, cyclotron resonances, 5274.

light, some results on the energy-dependent Milne

problem, 6381.

liquefied, handling, 4144A.

low-pressure, electron optical studies, Mono.66. quantum statistics of fully ionized, 8966. radio wave absorption, in the 100 to 117 kMc/s

frequency range, J 65D1-98, 15 (1961).

shift of the R(0) and P(l) infrared lines of HC1

perturbed by noble, 9006. shock waves, model for vibrational relaxation, 3262.

solid noble, line shape of ultraviolet absorption,

4144. spectroscopic investigations of fluorescence and

chemiluminescence, 6386.

strain, resistance, method for measuring the in- stability of at elevated temperatures, 5142. symmetric-top, non-resonant absorption, 3669. thermal conductivity; coaxial cylinder cell, J 66A4-

168, 333 (1962). thermodynamic properties, 5817. thermodynamic properties, high temperatures and

pressures, 3512. translational dispersion, 5829. transport coefficients, method for finding the density expansion, 5477. 565
Gases rare, electrons of sub-excitation energies, anomalous transmission, 5920.

line profiles in the far ultraviolet absorption spectra, 6831. rotating or expanding, cosmic examples of heat conduction, 3487.

solid state, 6477. structure beyond the ionization limit in inelastic electron scattering, 5707. use of electron energy loss measurements to observe

optically forbidden transitions in the con- tinuum, 6239. Gauge, emission current to better than 0.05%, regulation of ionization, 5633.

strain, calibration device for extreme temperatures,

3316. Gauge-based load controller, strain, 4911. Gauss, alternating procedure in the method of least squares, convergence, 3272.

type, abscissas and weights, 4297. Gaussian, correlation functions, two-electron systems,

6101.

distributions for slightly nonlinear variables, modified, J 68D9-405, 1035 (1964).

orbitals for atoms-in-molecule calculations, 4400. quadrature of nonpolynomial functions with in- definite or complex weight functional ; multiple sums, integrals, and derivatives; fractional transformations, 3217. wave functions for polyatomic molecules: integral formulas, J 68B1-114, 35 (1964). GBR, (16 kilocycles per second) observed over a path

of 720 kilometers, reversal of diurnal phase

variations, 6349. Ge, Al, Be, observed line shapes of collective excitations, 6242. Gear, miniature, flange and bearing puller, TN253, p. 7. Gearing errors as related to alignment techniques of the rotary-vane attenuator, 6771. Gehlenite hydrate, hydrothermal preparation, J 68A5-

292, 449 (1964). General, application of Youden's rank sum test for outliers and tables of one-sided percentage points, J 68B2-116, 55 (1964).

characteristics of linear strain gage accelerometers used in telemetry, TN150.

description of D-C digital voltmeters, 3928; 4098. formulation of nonlinear response, application, large longitudinal retarded elastic deformation

of rubberlike network polymers, 5442. junction-transistor equivalent circuit for use in signal switching analysis, 3929. purpose coding systems for statistical calculations, 9126. purpose computer program, TN125 (PB161626).

report on fundamental spectroscopic data, 6772. survey of the semiconductor field, TN153.

survey, principles, and alloys of copper and of

silver, 5322. Generalization of, a result of Newman on multipliers

of difference sets, J 694B-161, 319 (1965).

inequality of L. V. Kantorovich, 3269. Rennie's inequality, J 68B2-117, 59 (1964). Generalized, axially symmetric potentials, domain of

regularity, 2228A. Dedekind sums, some remarks, 6378. functions of symmetric matrices, 6773. Generalized master equation for arbitrary initial states, 6774. master equation for quantum-mechanical systems to

all orders in the density, 6102. master equation, theory of irreversible processes in plasmas—derivation of convergent kinetic equation, 6495. master equations, identity of three, 6254.

variation principles, electromagnetic vibrations; application to the theory of waveguide junctions, 5376. Generating functions for formal power series in non- commuting variables, 3556. Generation, composition of functions, J 68B3-122, 99

(1964). dissemination, NBS-A time scale, 9087A.

electromagnetic pulse by an expanding plasma in a

conducting half-space, J 68D2-327, 147 (1964). radio noise in the vicinity of the earth, J 66D2-182,

153 (1962). Generator, NBS two-pressure humidity, and the NBS

standard hygrometer, comparison between,

6542. Generators, Hall, sensitivity indices, TN233.

Hall: what, why and how much, 6110.

Hall, sensitivity indices, 6361. VHF and UHF power, for RF instrumentation, TN77 (PB161578). Genus one of the modular group, complete description

of the normal subgroups, 5869. Geographical, diurnal and seasonal variations in composition of high atmosphere from F-region measurements, 6255. diurnal variations of ionospheric data by numerical

methods, 5040; 8993.

position and height of an auroral arc from one

observing station, a method for determination, 5140. Geological conductors, propagation of radiofrequency

electromagnetic fields, J 67D2-252, 161 (1963). Geomagnetic, artificial, and ionospheric storms associated with high-altitude explosions, 3270.

crochet, cosmic-ray intensity, 5746. disturbance, delay time of polar-cap blackout and

its relation to delay time, 5275.

effect of the starfish high-altitude nuclear explosion, 6252.

effects associated with auroral zone electron precipitation observed by balloons, 5888. equator, vertical cross sections of the ionosphere, TN138 (PB161639).

field, atmospheric phenomena and energetic elec- trons, J 66D2-180, 127 (1962).

field boundary under uniform external pressure,

5045.

influence on the [OI] 5577 nightglow emission at Fritz Peak, 3404. ionospheric oscillations, simultaneous, relationship between, J 68D3-351, 339 (1964). ionospheric phenomena associated with nuclear explosions, 3219.

latitude, characteristics of spread F, 5230.

latitudes, high conjugate point observations, 5970. micropulsation frequency range, studies, 5710. micropulsations, explanation for the apparent

polarization, 5911.

pulsations, characteristics, at frequencies near

1 c/s, J 69D8-544, 1117 (1965). singular days, search, 3399.

solar activity, resurgence, 5645.

solar data, 3557; 4099; 4671; 5377; 6103. sudden commencements, 4801. Geomagnetic activity, F2 region over Central Africa,

4993. following large solar flares, 3218. ionospheric disturbances, auroral-zone observations

of infrasonic pressure waves, 5209. traveling pressure waves, 4394. Geomagnetic storms, 4955. equatorial ionospheric variations, 5337. IGY data from United States stations, studies on sudden commencements, 3800. ionospheric variations, 5424. space around the earth, 3558. suggestion for improving forecasts, 5168. 566
Geomagnetically conjugate stations, cosmic noise absorption, 6663. Geomagnetism, and the ionosphere, J 68D5-362, 572

(1964). magnetosphere, J 68D5-363, 603 (1964). Geometric-optical theory for LF/VLF propagation be- tween the ionosphere and the ground, concerning limitations and further corrections, J 68D1-318, 67 (1964). Geometric optics, TN330; TN335.

Geometric-series, TN335.

Geometrical, anisotropy of magnetic materials in waveguides and cavities, 3220. correction factors for four-point probe resistivity measurements on thin, circular semiconductor

samples, TN199.

theorems for abscissas and weights of Gauss type, 4297. Geometrical optics, convergence coefficient for the whistler case, J 68D2-334, 211 (1964). convergence coefficient for whistler propagation, J

68D11-425, 1225 (1964). curved surfaces with periodic impedance properties, J 66D6-229, 699 (1962). gyrotropic bodies, J 69D3-479, 349, (1965). low frequency propagation, diffractive corrections, 3503.

solutions for curved surfaces with variable im- pedance properties, on the limitations, J 66D6-

230, 707 (1962). Geometry, HO,, 4428. microstructures, M257, Paper 1, p. 1. notch, tensile properties of annealed titanium at

100°, 25°, -78°, and -196°C, 3194. Geophysical, alerts and special world intervals during

1961-1962, 4229. calendar, international, years of the quiet sun

1964-1965, 5422; 6151. calendar for 1962, 4707. calendar for 1961, international, 4128. calendar for 1963, international, 5420. cooperation international, calendar record, 5222. interplanetary, astronomical, light of the night sky, 6457. Monograph Board, 4895. Geophysical Year, International, occurrence of spo- radic E, 5030. International, world magnetic survey, 4356. Geophysics, astrophysics, and masers, papers on the symposium on collision phenomena, TN124

(PB161625).

spiral patterns, 3785. Geo-stationary satellites, study of ionospheric electron content and ionospheric radio-wave propagation, 3877. Germania and silica, vitreous, temperature dependance of Young's modulus, 3809. Germanium, carbon thermometers at 4.2°K, 4277.

correlation between observed wavelength shifts produced in electrodeless discharge tubes and

predicted stark-effect shifts in the spectrum

of neutral, 5977.

dissolution, some electrochemical aspects, 9016;

9017.

<7/-values, for seventy elements, 4647.

resistors, calibration of, at low temperatures (2- 20 "Kelvin), J 70A3-400, 243 (1966).

spectral line intensities in the first spectrum of copper, J 66A6-185, 497 (1962). vacuum ultraviolet Ritz standards, 4672.

Gh-, 6-45. frequency range, brightness temperature of the atmosphere using a bi-exponential model,

5935. Giant, pulse laser, ruby, study of anthracene fluores- cense, 5165. resonance of the nuclear photoeffect, 5001. resonance in heavy nuclei, damping, 6675.

Gigahertz, gases at 47.7, absolute determination of re- fractive indices, 6576A.

Gimball device to minimize the effects of off-center loading on balance pans, J 64C4-46, 277

(1960). Ginzburg-Landau, parameter, temperature and mean

free path dependence, 6425. theory, superconductivity, lower critical field, 5771. Given radiance, scheme for obtaining integral and

fractional multiples, 5163. Glacial ice and snow, measured electrical properties, J 64D4-69, 357 (1960).

Glass, arsenic trioxide, condensation coefficient, 3483.

borosilicate, annealing, further studies, J 70A2-

390, 147 (1966). cadmium borate, X-ray study, 5863. ceramic tubes, method of cutting threads, 3384. comparison of single-point and two-point loading,

5962.

controlled pore size, chromatography, 6634.

electrode, 3559; 4354.

electrode spot tests and water extraction, comparative pH measurements on papers, 4005.

fiber paper, mechanical preparation and pH on the

strength, 998A.

fiber, vinyl-coated, insect screening and louver

cloth, CS248-64.

filters for checking performance of spectrophotometer-integrator systems of color measurement, J 66A3-154, 203 (1962).

finishes, adsorbed, by ellipsometry, studies of thick- nesses, 6408. forming systems, 5055. (high silica), quartz, and vitreous silica. 6780. immersed in molten salts, conductance, 6652.

joint or stopcock preventing capillary action, TN253, p. 4. liquid-in, thermometers, 5082. mechanical properties, elevated temperatures, 5472. other substrates, adsorption of polyesters and

other polymers, 3963.

relation to fracture pattern, modulus of rupture,

6217. research at the National Bureau of Standards,

3221.

resin systems, basic factors, 3151.

reversibility of polyester adsorption, J 67A6246,

601 (1963). standard soda-lime-silica, viscosity, J 68A5-291,

439 (1964). standards of spectral transmittance. NBS, recali- bration, J 67A6-243, 577 (1963); 6337. surfaces and other materials and their possible

role in the coagulation of blood, ionic charges,

3590. temperature, variation of, pressure in polypropylene, J 68A3-273, 273 (1964).

transition in a rubber, J 68A6-308. 611 (1964).

transition temperature of methyl methacrylatestyrene copolymers, effects of composition and

irradiation, 6012.

trap, conduction-cooled, concentric sphere, 5968. ultrahigh pressures, 4621. viscometer, J 69A5-366, 449 (1965). water surfaces, interfacial properties of polyesters, 3233. Glass transformation, change in the heat capacity of boron trioxide. 5943. excess entropy, 6059. temperatures of aqueous inorganic solutions, deuterium isotope, 5289. volume relaxation of AssOn, 9133.

Glasses, alkali silicate binary, structural and thermal

expansions, 3796.

alkali silicate binary, vitrons as flow units, J 65A2-94, 117 (1961). 567
binary silicate, study of alkali-aggregate reaction, 3448.

limits on calorimetric residual entropies, 6830.

optical, infrared, refractive indices and trans- mittance, 3293.

oxide, evaluation, for use as infrared materials,

3537.

oxide, infrared dispersion, 5408. performance of lenses made from inhomogeneous,

9089.

silicate, ambient temperatures, kinetics of the transport of water through, 3600.

silicate, application of the Williams-Landel-Ferry

equation, 3139.

silicate, effect of fluorides on infrared transmittance, 3193. Global ionosphere studies, topside sounding as a tool, 5826A.

Gloss, meter, visual distinctness-of-image, 3125. standards and glossmeter standardization, 6104. Glossary, machine, structure, the method for mechanical translation used by the NBS group, 5774. Glossmeter standardization and gloss standards, 6104. Glow discharge spectra of copper and indium above aqueous solutions, 3222. Glucose, 4473. Glucose-3-C-14, TN274.

Glycerol absorption, surface area determination of kaolinite, 3804.

Glycine, N, N-Di- (2-hydroxyethyl) , and related ther- modynamic quantities from 0 to 55 deg., second

acid dissociation, 6359. potassium chloride water at 25 °C from vapor

pressure measurements, thermodynamics of the ternary system, J 69A2-334, 131 (1965).

Gold, anodes in acidic oxalate solutions optical investi- gations of film formation, 6272. (Au in), third spectrum, J 64A6-69, 481 (1960). (Au m), third spectrum, theoretical interpretation, J 69A6-371, 511 (1965).

castings, dental, surface roughness, 4334. copper, molybdenum, silver, and tantalum at 662

kev, total photoelectric cross sections, 3356A.

dentistry, 6105. Gold-cobalt, 3616. constantan vs. copper or "normal" silver, 4156. Goniometer and simple centering jig for punching or

drilling spheres for structure models, 3401. Goniophotometry, foundations, discussion, 3507. Good solvents, effect of heterogeneity in molecular weight on the sedimentation equilibrium sec- ond virial coefficient of polymers, 6251. Gouy and the Thorpe-Senftle methods, absolute magnetic susceptibilities, 4462, Government, Federal, evaluating computer systems

analysis and design work, 6053. research laboratories, role, 3348. Gradients, optical thickness, determination, from a far

distance, 5285. Grading, abrasive grain for grinding wheels, CS271-65. diamond powder in sub-sieve sizes, CS261-63.

Graduation, selected bibliography 1930 to 1957, J 66B1-

69, 15 (1962). Grain, gas chromatographic determination of the moisture content, 6768. oriented 3.25% silicon steel, effects of tensile stress on the domain structure, 5315. Grains, interstellar, possible mechanism for light absorption, 6556. (structure of developed), number, and sensito- metric properties, 6333. Grammar of radical Chinese characters, TN254.

Granite and uranium-bearing sandstone, fractionation

of uranium isotopes and daughter products in weathered, 6084. Granular materials in sulfur mortars, simple method

for measuring, 6562.

Graphic, presentation, and precision, Mono. 96. storage techniques, current status, their potential application to library mechanization, 6438. Graphical, determination of radio ray bending in an

exponential atmosphere, J 65D2-116, 175

(1961) . diagnosis of interlaboratory test results, 3223. evaluation of analytical results, 3224. Graphics interface, automatic, to a computer, MAGIC- A machine, 6840. Graphite, 1200 to 2600 deg K, calorimetric determination of the enthalpy, 6541. porous, contact on p-type silicon, 4917. Graphitic microstructures, quantitative metallographic,

evaluations, 5606. Graphs, bivariate normal probabilities, 3560. Boolean matrices, applications, computer programming, 3434. determining the power of Student's t-test, J 66B2-

74, 59 (1962).

finite idempotent Boolean relation matrices, J 67B4-

107, 249 (1963).

linear, on the surface of duality, J 69B1&2-142, 121

(1965). ordinary, the existence of k-edge connected, with

prescribed degrees, J 68B2-120, 73 (1964). oriented linear, and analyses of lumped physical systems, on the connection between the properties, J 69B1&2-136, 79 (1965). Grating spectrograph utilizing commercial camera components, large-aperture, 3240. Gravimetric hygrometer, Mono.73. Gravimetry, TN275.

Gravitational and thermal atmospheric oscillations, iono- spheric dynamo effects included, 3875. Gravity, NBS absolute, experiment, 3850.

results of an absolute determination of the acceleration, 8998. Gray codes, perfect, maximum cellular Boolean functions, J 67B2-94, 77 (1963). Grazing angles, computation of diffraction fields, 2665A; 3680. Great Lakes, electrical conductivity, J 67D6-306, 765

(1963). Greatest crossnorm, J 68B4-130, 185 (1964). Green, and purple sulfur: electron spin resonance

studies, 3561. red coronal lines, 4644. Green's N-body function, classical binary collision ex- pansion, 4803. Grinding wheels, grading of abrasive grain, CS271-65. Ground, conductivity determinations at low radio-fre- quencies by an analysis of the sferic signatures

of thunderstorms, 4100.

flat layered, note on the attenuation function for propagation, 5882. impedance of long wire, 4203.

plane, inhomogeneous, the theory of an antenna,

5804. proximity loss for dipole antennas, curves, TN175.

reflection in line-of-sight phase systems, analysis, 6589. screen on the field of a vertical antenna, Mono.60. state oxygen atoms with condensed olefins, 6336.

state spins of light nuclei, empirical rules for predicting, 6038. turbulent characteristics of the radio refractive

index, 5807. Ground-based, antenna, possible influence of the iono- sphere on the impedance, J 66D5-216, 563

(1962) . antennas, note on E-field and H-field losses, 5153. measurement of oxygen emission, method for de- termination of tropospheric temperature structure, 6549. passive probing using the microwave spectrum of oxygen, J 69D9-553, 1201 (1965). S68
systentfi timing and space navigation, 5089A. Groundwave, attentuation, calculation, far diffraction region, J 68D7-379, 819 (1964). electromagnetic signal, propagation; particular ref- erence to a pulse of nuclear origin, 8962. low-frequencv phase, a few observations of the

perturbations, J 65D4-143, 393 (1961). propagation, experimental study of mixed path, J 68D8-390, 915 (1964). propagation on a spherical earth, theory of mixedpath, J 65D4-145, 401 (1961). propagation over inhomogeneous earth, calculated

curves, pronounced topographical features, J 69D7-536, 1011 (1965). propagation over mixed land and sea paths, curves,

5273. very low-radiofrequency, TN60 (PB161561). Groundwaves, across a coastline, oblique propagation of —Part I. J 67D6-295, 617 (1963); Part II. J 67D6-296, 625 (1963); Part III. J 68D3-344,

291 (1964). model experiments on propagation of, across an

abrupt boundary at perpendicular incidence, J 69D10-571, 1375 (1965). Group, and related groups, real two-dimensional representations of the modular, 8981.

free subgroups and normal subgroups of the modular, 6090.

iron, non-linear effects in spectra, 5508. Lorentz, and SU3 , symmetry group, 5892. modular, complete description of the normal sub- groups of genus one, 5869. modular, normal congruence subgroups, 5510; 5511. modular, note on a subgroup, 5513. NBS, and the structure of its machine glossary, method for mechanical translation, 5774. normal subgroups of the modular, which are not congruence subgroups, 6892.

real metric, complex Lorentz, 5963. symmetry, containing both the Lorentz group and

STL, 5892. theory and crystal field theory, 4101. theory of relaxation, weakly coupled systems, 9112.

velocity of 17.8 kc/s VLF radio waves, measurement, J 69D9-557, 1235 (1965). Groups, (contiguous, secondary sulfonyloxy) , action of

zinc dust and sodium iodide in N, N-dimehthyl- formamide on; a simple method for introduc- ing non-thermal unsaturation, 6580A.

cyclic, free products, 4918.

linear fractional transformations, tables of genera, J 67B1-93, 61 (1963). modular, note, 5154. preserving ordering in vectors, J 70B2-179, 159

(1966).

proton, form and angular distribution, at about Q-0 Mev in the proton spectra of (d, p) reactions of heavy nuclei, 5364.

real two-dimensional representations of the modular

group, 8981.

t x t matrices, modulary, 5492. unimodular circulants, J 69B4-160, 313 (1965). Growth, evaporation kinetics, surface diffusion of K and Hg crystal whiskers, 5378. evaporation, theory of whisker, 6497.

crystal, chemical research, 6671.

crystal, research, TN174; TN197; TN236; TN251;

TN260.

crystal, thermal etching of argon, 6670.

helical dislocations, 5533.

initiation of spherulite: The case of con-current homogeneous and heterogeneous nucleation,

6804.

kinetics of potassium and mercury crystals, vaporphase, 6526. layers on ammonium dihydrogen phosphate, 6775.

oxalic acid single crystals from solution: solvent

effect on crystal habit, 6106. rates of zinc crystals from the vapor phase, 4102.

roots of electronic computers, 5002.

spirals on NiBr, platelets, 6107. standards—foundations of industrial, 6399. twins and branching of electrodeposited copper dendrites, 6108. Guard-ring, micrometer-electrode holder for solid-disk

dielectric specimens, 4280. micrometer-electrode holder, residual losses, J 65C2-

61, 101 (1961). Guard rings, metallized polymer film, 6862. Guarded, electrode, effective area, 5748. electrodes for accurate dielectric measurements on

solid-disk specimens, precise determination

6304.

flat plate calorimeter, 4481. Guide, dental materials 1964-1965, 6109. instrumentation literature, M271.

new, how to listen to the world; the ionosphere,

9084. Guided, electromagnetic waves, possibility, earth's crust, 5782. propagation of ELF and VLF radio waves between

the earth and the ionosphere, J 68D5-362, 584

(1964) ; 6449.

_ waves in the troposphere, J 68D5-361, 563 (1964). Guides, corrugated, a contribution to the theory, J 64D5-

92, 533 (1960). Guiding, electromagnetic waves by uniformly rough

surfaces, 3225; 3226. whistlers in a homogeneous medium, J 64D5-88, 505

(1960). Gun bores, plating, 4232. Guns, electron, low voltage, design, 5280. unipotential electron, at low voltages, limitations on electron beam density, J 67C4-138, 279

(1963). Gypsum, board products, R266-63.

plasters exposed to fire, J 66C4-113, 373 (1962).

slabs, fire endurance of small, 6757. Gyro interaction in the ionosphere, oblique incidence, experimental study, J 69D1-440, 25 (1965). Gyrotropic bodies, geometrical optics, J 69D3-470, 349

(1965) . cylinders with axial magnetic fields, electromagnetic scattering, J 69D2-457, 227 (1965). media, nonuniform, propagation, J 69D3-469, 333

(1965).

fir-values, J 66A1-136, 5 (1962). H H atom-condensed olefin system, gaseous, 4745. H atoms, N atoms and ozone, atomic flame reactions, 5206. H

00

, interpolation, normal funtions, Montel property,

5512. H II regions, extent, 3831. H2 and He, interaction potential, 6808. H3 , configuration interaction, 6653. cooled aluminum-wound magnet, high field liquid, 5383.

electron impact, dissociation, 6706. energy losses and elastic resonances in electron

scattering, 6042. HD, and D2 , 6845. transfer reactions in the gas-phase radiolysis of hydrocarbons, 6776. H2O and D2O, solid, low temperatures, thermal conductivity, 5819. bands, computer transmission spectra, 2.7 mu,

5255. Ha and He, configuration interaction, 6653. H3 and saturated hydrocarbons, proton-transfer reactions, 6319. 569
Habit, solvent effect on crystal: growth of oxalic acid

single crystals from solution, 6106. Hadamarad matrices, construction, 3332. Hafnium, separation from zirconum and their determi- nation : separation by anion-exchange, J 66A6-

187, 517 (1962). zirconium, TN276.

zirconium by anion exchange, separation, J 65A1-

87, 75 (1961).

Half-cell entropy changes, calorimetric determination,

5224.

Half-life of carbon-14, 4103; 4355. carbon-14: comments on the mass-spectrometric method, 6450. Half lives, M260-9.

Half-space, imperfectly conducting, impedance of a monopole antenna with a radial-wire ground

system, Part II, J 68D2-328, 157 (1964). Half-wave cylindrical antenna in a dissipative medium:

current and impedance, J 64D4-70, 365 (1960).

dipole antennas, radiation efficiency, 8969. Halide crystals, alkali, 5814. determination of work function from the ratio of

positive to negative surface ionization of an

alkali, 9069. Halides, alkyl, shock-tube, thermal decomposition,

6499. cesium, 4636. cyanogen, electron impact study, 3523. organic and alkali metal vapors, inhibition of opposed-jet methane-air diffusion flames, 5411. rare-earth, preparation of anhydrous single crystals, J 67A4-223, 343 (1963). some alkali, lattice permameters and lattice energies of high-pressure polymorphs, J 68A1-

258, 105 (1964).

titrations of, precise coulometric, J 67A1-192, 31

(1963). Hall effect, 5003.

effect devices, standardization of definitions, 6394. generators, sensitivity indices, TN233; 6361. generators: what, why and how much, 6110. Hallen's method in the problem of a cavity-backed rectangular slot antenna, J 67D2-259, 237

(1963). Halobenzenes as sensitizers for the radiation induced

polymerization of styrene, 3562. Handbook, CRPL ionospheric predictions based on

numerical methods of mapping, H90. mathematical functions with formulas, graphs, and

mathematical tables, AMS55.

Handling, digital, of chemical structures and associated information, 6693. Handpieces, turbine, 4517. Hankel functions, computation, TN216.

transforms, series, relation between two-dimensional Fourier integrals, J 69B3-149, 173

(1965). Hard gallium alloys, detailed techniques for preparing and using, TN140 (PB161641).

gallium alloys for use as low contact resistance

electrodes and for bonding thermocouples into samples, 3563. gallium, comments on the use and preparation, 4296. sphere fluid, approximations to the pair correlation function, 5927. sphere, relaxation, Rayleigh and Lorentz gas, 5540; 6259. tooth tissues, adhesive bonding of various materials, 6581; 6582; 6583; 6584; 6585. Hardened steels, gage blocks of superior stability, 6096. Hardy's formula in Brownian motion, some applications, 4294. Harmonic analysis of a stationary process, components

of power, 3821.

crystal lattices, isotopically, disordered one-dimensional, numerical computation of time-dependent properties, 5522.

crystals, containing isotopic defects, momentum

autocorrelation functions and energy transport, 5494. generation, efficient, 3513.

oscillator transition probabilities, 4869.

oscillator transition probabilities in a one-dimensional impulsive collison, 3731A.

oscillators, relaxation of an isolated ensemble,

3749. perturbations, zonal, accurate reference orbit of an

artificial satellite, J 67B4-103, 191 (1963). Harmonics, optical, frequency ratio, 4645. Hartree-Fock approximation, CH4 and NH4 +, 5379. approximation, helium, first-order perturbation

corrections, 5360. wave functions, atomic scattering factors for the

lithium and beryllium isoelectric sequences,

5207. Harvard College Observatory, Harvard Radio Astron- omy Station, Fort Davis, Texas, J 68D5-364,

636 (1964). College Observatory Radio Astronomy Group and

Space Radio Project, Cambridge, Mass. J

68D5-364, 637 (1964).

College Observatory, Radio Meteor Project, Cambridge, Mass., J 68D5-364, 638 (1964). Hawaii, Maui, measurements, ESD, 6050. Hawaiian lavas, Sr^/Sr86 ratios, 6389. HAYSTAQ, mechanized system for searching chemical

information, TN264.

present status of project, 6309. system: past, present and future, 3227. Hayward linear notation system, some experience,

9018. HBFc, fluorine and proton NMR spectra, 6318. ijj"B19F2, relative signs of nuclear spin couplings, 8988A. HBO?, gaseous infrared emission spectrum, 3580. HBr excited in an electric discharge, infrared emission spectrum, 6800. HC1 perturbed by noble gases, shift of the R(0) and

P(l) infrared lines, 9006. DC1 and DC1 by HC1, pressure broadening, 6311. HCN from 2000 to 3600 cm-1

, infrared spectra, 6130.

nuo, lines of broadening, due to argon, carbon di- oxide, and hydrogen chloride, 5216. HCO, infrared spectrum, 6135. HCO?, HC0 2+ and HCO 7 calculation of electronic energies, 6618. H,CO, H; 0, CH--C1, and their deuterated molecules, method of adjusting force constants and its application, 6864. HD. H,. and D,, 6845. HDS, H?S, and D^S, mass spectra and metastable transitions, 5459. He, nucleate and film pool boiling design correlations for 0. Ni, 8902.

H?, interaction potential, 6808. Ne, Ar, Kr, Xe, and Hg, elastic resonances in electron scattering, 6721. Ne, classification of resonances in the electron scattering cross section, 5234. Ne and A, new autoinizing atomic energy, 5502. Ne laser line, 6702. Ne laser, interference fringes with long path dif- ference, 5418. He I in the solar spectrum, excitation, 3830.

He:.. + and Ne» +, reaction rates for formation, 5629. Hen cryostat for performing experiments with oriented

nuclei, 5134. He3 scale of temperatures, 1962, J 68A6-301, 547

(1964); J 68A6-302, 559 (1964); J 68A6-303,

567 (1964); J 68A6-304, 579 (1964). 570
He4

, three-body-bound state, 5824. Hearing by bone conduction, 3227A; 4104. threshold data, 4891. Heat, boiling, transfer for oxygen, nitrogen, hydrogen, and helium, TN317.

capacities, 5380. combustion and heat of formation of aluminum

carbide, J 68A6-315, 661 (1964). combustion of borazine, B3 N3 H6 , J 65A2-91, 101

(1961). combustion of dicyanoacetylene, 3835. conduction and density fluctuations in a pure liquid, 4026. conduction in very rare rotating or expanding

gases, cosmic examples, 3487. conduction, steady-state, in an exposed exterior column of rectangular cross section, J 69C2-

194, 145 (1965). content of thorium dioxide from 298 to 1,200° K,

J 65A2-92, 105 (1961).

data, pressure-density-temperature, for parahydrogen, 5742. decomposition of potassium perchlorate, J 65A1-

84, 63 (1961). decomposition of sodium and potassium chlorate, J 69A1-320, 1 (1965).

effect attending the passage of electric current

across a liquid junction, measurement of the

reversible, 6020. entropy change of transition, fusion and vaporization, temperature, pressure, 5728. exchange in adiabatic calorimeters, J 67A4-222,

331 (1963).

flat roofs insulation moisture effects, 3213.

flow in a hollow cylinder, rotating in a furnace with a viewing port, 5558.

flow in a right circular cylinder with arbitrary temperature boundary conditions — applications to the determination of thermal conductivity, J 68C4-166, 215 (1964). fusion Bi2 03 , 5055. gaseous, conduction at low pressures and temperatures, 3216. hydration of portland cement, BSS5, Part 2, p. 27. low-temperature, capacities, 4617. mechanics, precision measurement and calibration, H77, Vol. II. net, of combustion and other properties of kerosine and related fuels, 4785. nine corrosion-resistant alloys at high temperatures, enthalpy, J 65C1-56, 65 (1961).

over-all, transfer coefficients for condensing and

boiling hydrogen film, experimental investigation, 3969.

oxidation, and radiation, 4847. oxidation of aqueous sulfur dioxide with gaseous

chlorine, J 67A5-231, 427 (1963).

potential: method for measuring the heat release

of materials in building fires, 4237.

precipitation of collagen, kinetics, 5016. rapidly running crack in a plate, triaxial tension, 3359. sink for protected underground installations, 3148.

sink method for measuring the cooling loads of refrigerated structures, 3229.

sinks for protected underground installations, 3984. vaporization of chlorotrifluoroethylene (C2 F3 C1), 775A. Heat capacity, apparatus for determination, fluid hydrogen at low temperatures and high pressures, J 65C4-76, 231 (1961). boron trioxide during the glass transformation, change, 5943. calorimeters of, adiabatic, alpha-alumina, heating

rate as a test, 5381.

diamond at high temperatures, 5004

enthalpy measurements on aluminum carbide

(A1..G.) from 15 to 1173 °K. Thermodynamic

properties from 0 to 2000 °K, J 69A5-364, 423, (1965).

finite lattice, on spin-lattice relaxation, 6718. gaseous perfluorocyclobutane, 727A.

linear and branched polyethylene, 5759. potassium borohydride (KBH4 ) from 15 to 375 °K. Thermodynamic properties from 0 to 700 °K, J 86A6-314, 651 (1964). thermal conductivity, standards, 3791. thermodynamic properties of beryllium aluminate

(chrysoberyl), BeO • A1,03 , from 16 to 380 °K,

J 69A1-322, 13 (1965). Heat of formation, aluminum fluoride by direct combination of the elements, J 69A2-335, 137 (1965). beryllium chloride, J 65A1-83, 59 (1961). calcium aluminate at 25 °C, heat of formation, J 69A5-362, 407 (1965). calcium aluminate monocarbonate at 25 °K, J 65A3-

102, 197 (1961). calcium aluminate monosulfate at 25 °C, J 67A1-

188 1 (1963) decaborane, J 64A6-75, 521 (1960). inorganic fluorine compound, 4678. magnesium oxysulfate, preparation, J 68A6-313,

645 (1964). 2V-dimethylaminodiborane, J 65A1-86, 71 (1961). nitrogen trifluoride and the N-F bond energy, 3228. nitronium perchlorate, J 66A6-179, 447 (1962).

stable form of metaboric acid, HBO,(cI), 3563A.

titanium trichloride, J 64A6-74, 515 (1960). Heat pumps, air-to-air, 4635. analysis of electric energy usage in Air Force

Houses, Mono.51.

heating performance, two Air Force housing projects, 6111A.

residential for USAF, studies, 3320.

split-type residential, 4828. Heat, specific, constant volume of para-hydrogen at temperatures from 15 to 90 °K and pressures

to 340 atm, 5046. enthalpy, and resistivity of electrical conductors at high temperatures, high-speed (milliseconds) method for simultaneous measurement, 6546. gas Cp/Cv, resonance method of measuring the

ratio, 776A.

saturated liquid para-hydrogen from 15 to 32 °K,

5047. Heat transfer, coefficients for hydrogen, 4483. cryogenic insulation, a new steady-state calo- rimeter for measuring, 5880.

effect of moisture on, through insulated flat-roof constructions, measurements, 4168. insulated flat-roof constructions, 4749; 4994.

intensively outgassed powder, 4667.

solid surfaces to cryogenic fluids, survey of the

literature, TN122 (PB161623). Heat treatment and properties of iron and steel, Mono.

18. constitution and mechanical properties of some

hydrated aluminous cements, 3192A.

fatigue damage, 4502. microstructure, M257, Paper 3, p. 29. relation between refractive index and Young's

modules, 5945. Heated cell for quantitative infrared spectrophotometry, 3564. shock, plasmas, relative oscillator strengths of some O II and O III lines from measurements, 6344. Heater lead problem in calorimetry, 6111. Heating and cooling, air flowing through an under- ground tunnel, J 65C3-66, 157 (1961). 571
artificial, electrons in the F-region of the iono- sphere, 5204. correction for viscometer flows, 5070. expanding mechanical engineering, 6156.

flash, and kinetic spectroscopy, observation of FeO

in absorption, 6238. high temperature, 4962. performance of air-to-air heat pumps at two Air

Force housing projects, 6111A.

photoionization, F region of the atmosphere, 4224. radio-frequency, open-probe thermocouple control, 6266. rate as a test, adiabatic calorimeters and the heat

capacity of alpha-alumina, 5381.

self, explosives and propellants, 5077.

solar, effect of insulation on the weathering of smooth-surfaced built-up roofs, 5310.

solar, radiative cooling and thermal movement

their effects on built-up roofing, TN231.

vacuum, changes in emittance, 3158. Heats and thermal functions of formation of some

of the major vapor species in the boron-oxy- gen-hydrogen system at elevated temperatures,

3355. combustion and formation of trimetheylborane, tri- ethylborane, and tri-w-butylborane, J 65A3-104, 215 (1961).

derived, and two carbon positions of formation of

several alkyl radicals, relative rates at: hydro- gen atom addition to olefins, 6785. formation of lithium perchlorate, ammonium perchlorate, and sodium perchlorate, J 65A1-85, 66

(1961). formation of two isomers of difluorodiazine, 5382. hydrolysis and formation of dimethoxychloroborane, J 65A5-124, 435 (1961).

solution, oxidation of sulfur dioxide, 5760.

solution, transition, and formation of three crystalline forms of metaboric acid, J 68A1-241, 127

(1964).

specific, and enthalpies of technical solids at low

temperatures, Mono.21.

specific, functions for the calculation of enthalpy, entropy and internal energy for real fluids using equations of state, 6093. sublimation, entropies, and dissociation energies of the cesium halide, 4636. sublimation of ruthenium and osmium, J 68A3-280, 325 (1964). transformations in bismuth by differential thermal

analysis, J 69A3-342, 237 (1965).

transport, status of linear relations, 9041. volumes of mixing in several C12 hydrocarbon sys- tems, 4105. Heavy, charged particles, tables of ranges and energy

losses, 6421.

nuclei, damping of giant resonance, 6675.

nuclei, form and angular distribution of proton groups at about Q-0 Mev in the proton spectra

of (d, p) reactions, 5364. water from 5 to 50 deg., thermodynamics of solu- tions of deuterium chloride, 6506. Height and geographical position of an auroral arc from one observing station, 5140.

distribution of the ratio of negative ion and electron

densities in the lowest ionosphere, 6253. gain for VLF radio waves, J 67D2-254, 183 (1963). maximum luminosity in an auroral arc, 3836. Heinz's inequality, another extension, J 65B2-51, 129

(1961).

Helical dislocations, growth, 5533. spring behavior under fluctuating load, 1759A.

spring microbalance, 5097. Helicopter battery service simulator, TN244.

afterglows, dissociative recombination, 6707.

arc, absence of equilibrium, 4648. atmosphere on the Beckman infrared spectrophotometer, 857A.

atom, lower bounds for eigenvalues with application, 3242. atomic spectroscopy, NSRDS-NBS4, Vol. I. atoms, comments on the Rosen interaction potential of two, 5245.

autoionization, using a synchrotron light source, 5210.

3 to 300 °K between 0.5 and 100 atmospheres, ther- modynamic properties, TN154.

6 to 540° R between 10 and 1500 psia, thermo- dynamic properties, TN154A.

clamped normal fluid, wave mode modification in

liquid, 9136.

classification of two-electron excitation levels, 5235. electron monochromator utilizing the scattering resonance, 5330. expansion turbine, miniature, gas-lubricated bearings, 4981.

filled T tubes, measurement of the structure of strong shocks, 4170. gas injection, experimental investigation of liquid hydrogen cooling, 5349.

gas, velocity of sound, 4465. Hartree-Fock approximation, first-order perturbation corrections, 5360. hydrogen, shock-heated, plasmas, measurements of temperatures and densities, 3631.

inelastic scattering of electrons, 6793.

ion loss processes of interest in the ionosphere, lab- oratory studies, 6173.

lines, new wavelengths, 3663.

liquefier, laboratory-size, design, construction, and

performance, 3494.

liquid hydrogen, solubility, 6369.

liquid, vapor pressure measurements, 4885.

liquid, vapor pressure regulator, 4146.

loss, terrestrial, new speculation, 6553. low temperatures, 4482.

mobilities and reaction rates of ions, 6870. multichannel resonances in the forward scattering

of electrons, 6875. neon gas lasers, RF excited, at 632.8 nm, gas mixtures and pressures for optimum output power,

6769. neon laser, accurate length measurement of meter

bar, 5902. nitrogen afterglows, ESR measurement of metastable atomic nitrogen, 6742. nitrogen gas, load carrying capacity of gas-lubri- cated bearings, TN115 (PB161616).

oxygen, nitrogen, and hydrogen, boiling heat transfer, TN317.

short-duration visible afterglow, 5657. temperature range, liquid, isotherms determined by

the National Bureau of Standards acoustical thermometer, J 69A6-375, 531 (1965). thermodynamic properties, low temperatures and

high pressures, 3356. turbo-expander, miniature, cryogenic refrigeration systems, 5143. two-electron excitation states, 9123. vapor and carbon resistance pressure measurements, reproducibility, 3861. Helmholtz coils for reducing ac induced magnetic fields, 4399. Helping consumers get correct weights and measures, 3229A. Hemisphere, southern, twilight sodium emission—1, observations, 6262. 572
Hemispherical, total, emittance, equipment and procedure, 3533. 2,2,4,4,6,8,8-heptamethvlnonane as a primary diesel fuel, 3879. Heptuloses, unsubstituted, 6417. Hertz. 400 and 1000, international comparison of in- ductive voltage divider calibrations, 6595. Heterodyne detection, optical, forward-stimulated Bril- louin scattering, 6271. Heterogeneous and homogeneous nucleation, case of con-current: initiation of spherulite growth,

6804. reactions observed in the ion source of a mass spec- trometer rate of the reaction NO + N, J 65A5-

121, 411 (1961). Heterogeneity in molecular weight on the sedimentation equilibrium second virial coefficient of polymers in good solvents, 6251. Hexafluoride, neptunium, theory of the magnetic and

spectroscopic properties, 3884. osmium, absorption spectrum and magnetic properties, 3960. Hexafluorobenzene, gamma irradiation, J 64A4-49, 269

(1960). Hexafluoropropylene and tetraftuoroethylene, inclusion

of perfluoromethyl groups in the lattice of co- polymers, J 69A5-369, 481 (1965). Hexagonal phase transformation of silver iodide, ki- netics and mechanism of the low-cubic, 6169.

silver iodide, structure, 5802. Hexahydroxybenzene, (benzenehexol) , cyclic polyhy- droxy ketones, oxidation products, J 67A2-202,

153 (1963). Hexoses-3-C-14, TN274. HF, hydrogen-fluorine flame and the vibration-rotation emission spectrum, 4304. microvolt measurements, 5384. propagation characteristics, equatorial latitudes, 5385. radio waves, continuous, spatial properties of amplitude fading, J 68D12-435, 1309 (1964). VLF bands, noise, predictions of communication

reliability, 5507. Hg, He, Xe, Kr, Ar, and Ne, elastic resonances in elec- tron scattering, 6721. K crystal whiskers, growth and evaporation ki- netics and surface diffusion, 5378. Hg (6T,) by CO and N,, deactivation, 4563. HgTM*, Hglf'"' and Hg195 * by Zeeman level crossings, hyperfine structure, 6786. Hg1 * as a function of temperature, wavelength shifts, J 65A6-128, 473 (1961). Zeeman filter, wavelength, relative to that of the 2537-A absorption line of an atomic beam,

5857. Zeeman-split, absorption filter, wavelength, 5858. Hide substance in leather by the Kjedahl method, deter- mination, 6685. trim pattern for domestic cattlehides, CS268-65.

Hierarchical files, TN285.

High altitude, observation techniques, 3565. U.S.S.R., nuclear tests, VLF phase disturbances,

5848. High altitude nuclear explosion (s) , 5528; 6182; 6252;

9057.

artificial geomagnetic and ionospheric storms, 3270. detonation using the VLF phase shift technique,

5281. High, and ultra-high vacuum, role of cryogenics in the production, 6476. area carbon films, formation and oxidation, 5365;

5754. atmosphere from F-region measurements, implication of diurnal, seasonal and geographical variations in composition, 6255.

dispersion spectra of Jupiter, 3566.

field liquid H,-cooled, aluminum-wound magnet,

5383.

field strengths, implication for lasers of an as- pect of interference, 5912.

gain, very low side-lobe antenna with capability for beam slewing, J 64D5-93, 557 (1960). geomagnetic latitudes, conjugate point observations,

5970.

intensity, multi-slit Raleigh interferometer to sedi- mentation studies, application, 6604. latitude investigation of the natural very-low-fre- quency electromagnetic radiation known as

chorus, 5135. High energy, bremsstrahlung and pair production;

radiative corrections, 8971. bremsstrahlung, comparison measurements of in- tensity standards, 3906. electron accelerator installations, shielding, H97.

energy, impulse radiation, 3906. standards, comparative measurements, 3906. X-ray images, 3363. x-ray intensity measurements, intercomparison, J

68A6-319, 703 (1964). X-ray photon albedo, 6112. X-ray spectrometer using large anticoincidence sodium iodide crystals, 3566A. High frequencies, ionospheric propagation, 6816. prediction of ionospheric characteristics at CRPL

for skywave radio propagation, 6306. use of dual-polarized broad beam antennas to de- termine the extraterrestrial intensity of the cosmic radio noise, 5808. High frequency, arctic propagation path, auroral-zone absorption effects, J 68D6-369, 717 (1964). atmospheric, TN318.

auroral radio path, fading characteristics observed, J 66D2-183, 159 (1962). backscatter from the earth measured at 1000 km

altitude, J 69D4-499, 641 (1965). backscatter sounders, ionospheric motions, J 65D2-

109, 115 (1961).

calibration and microwave services of NBS, 6208;

6867. calibration services, current developments, M248,

p. 45. communication centers, siting criteria, TN139

(PB161640). communication during ionospheric storms, J 67D1-

239, 23 (1963).

direction finding, influence of ionospheric conditions on the accuracy, J 65D3-122, 225 (1961). discharges and sliding sparks, excitation of atomic and ionic spectra, J 68C4-169, 237 (1964). Doppler technique, TN306.

elastic moduli of simple fluids, 6777. impedance, 5042. High magnetic fields, pumped magnetometers and re- lated experiments, 6275. magnetic latitude, some observations of short-duration cosmic noise absorption events in conju- gate regions, 6375. High mode tunable cavity for microwave-gas interactions, 4680.

precision coulometric titrations with special refer- ence to the determination of uranium, 6778. purity aluminum from 4 to 30 deg K, transverse

magnetorisistance, 5831. purity trimethylborane, preparation, J 66A1-140,

59 (1962).

silica glass, quartz, and vitreous silica, 6780. sodium content, cation-exchange between molten

salts and a special porcelain, 5942.

ultraviolet radiance, stable arc source, 6563. 573
radio pulse propagation diversity effects in long

distances, J 65D3-121, 213 (1961). radio waves in auroral latitudes, 2374A.

scattering from a coated sphere, J 66D5-222, 613

(1962). transauroral path, fading correlation bandwidth

and short-term frequency stability measurements, TN165. wave propagation, laminar nature of the exosphere,

4076. High polymers, oxidation, 4823. some aspects of the mechanical properties, 5666;

6372. High pressure, 5615. allotropy in some rare-earth metals, 5907. form of analcite and free energy change with

pressure of analcite reactions, 3567. measurement, 5386; 5387. microscopy of the silver and cuprous halides, J

68A1-257, 97 (1964). radiation-induced polymerization of propylene,

5616.

single crystal studies of ice, 6779. transition of Rbf, 4681.

transitions, visual observation, 5125. vapour-equilibria, thermodynamic representation,

5818. X-ray, diffraction studies, 5388. High pressures, measurement, 6200.

optical studies, 6273.

optical studies, using diamond anvils, 4821. radiation-induced polymerization, 5614. simultaneous dielectric constant and volume meas- urements on liquids, 9008. thermodynamics of hydrogen solubility in cryo- genic solvents, 6505. High-resolution, ammonia-maser-spectrum analyzer,

3930. infrared determination of the structure of carbon

suboxide, 6113. infrared spectra of C'lH,, C^'H^and G'i'H*, 6114. infrared spectra, molecular vib-rotors, the theory and interpretation, 5493. investigation of some infrared bands of carbon di- sulfide, J 66A3-161, 259 (1962) . low-energy electron spectrometer, 6115. millimeter wave Fabry-Perot interferometer, 3568. pulse measurements of meteor-burst propagation

at 41 Mc/s over a 1,295-km path, J 66D3-193, 249 (1962). rapid-scan antenna, J 65D1-108, 101 (1961). spectra in the region from 2 to 6 v, 4682. High-speed, low-capacity, gas-bearing-supported ex- pansion turbine, a refrigeration system incor- porating, 5161. (milliseconds) methods for the simultaneous meas- urement of enthalpy, specific heat, and resistiv- ity of electrical conductors at high temperatures, 6546. photography, new fast-opening, large-aperture

shutter, J 67C1-120, 65 (1963).

ratio pyrometer, 4423.

tensile impact, behavior of filamentous materials

subjected to, 5212. High strength, cast aluminum alloys, stress corrosion, 4944. ceramics in vibration transducers, use of, 6520.

steels, a study of embrittlement, by hydrogen

isotopes. I. Testing of steel rings as specimens,

a comparison of hydrogen and deuterium embrittlement, and permeation studies. II. A comparison of gas contents and hydrogen or deu- terium embrittlement resulting from electro- plating processes, 5166. High temperature, application, microbalance techniques,

5483.

dipole lattice, dielectric relaxation, 5294. emittance measurements, investigation of shallow

reference cavities, 5427. gases ionization, 5428. measurements and standards : 1000-3000 deg. Centi- grade, 6116. microwave spectroscopy: Alf and A1C1, 6781. platinum resistance thermometers, 4450. plasma, continuum description, 5973. pressure, radiation-induced polymerization and

other reactions of w-perfluoropentadiene-1-4,

8970.

reflectance, TN267.

seal of sapphire windows to ceramics, 6782. strain gages, development, Mono.26. suppression, effects due to statistics in the second

virial coefficient of a real gas, 9051. thermocouples, review of recent developments,

5647. thermodynamic functions for zirconium and unsaturated zirconium and unsaturated zirco- nium hydrides, J 67A5-230, 403 (1963). vacuum-ultraviolet photolysis of ethane, 9128;

9129. High temperature, high-speed (milliseconds) method

for simultaneous measurement of specific heat, enthalpy, and resistivity of electrical conductors, 6546. interaction energies and transport coefficients of

Li + H and O + H gas mixtures, 5414. heat capacity of diamond, 5004. High vibrational quantum numbers I: N2 and N t Franck-Condon factors, J 65A5-126, 451

(1961) . II, Franck-Condon factors, J 66A3-156, 227 (1962).

III, CN, J 68A1-254, 75 (1964). IV, NO band systems, Franck-Condon Factors, J

68A5-300, 535 (1964). High voltage, calibration facility, at the NBS, 5147.

d-c measurements, shielded resistor, J 66C1-83, 19 (1962) . Laue X-ray photography of large single crystals, 6117. X-ray, Laue photographs, the characterization of large single crystals, 5738. Higher ketoses by aldol reactions, synthesis, 6417. order integral identities with application to bounding techniques, J 65B4-65, 261 (1961). order skewnesses in a turbulent field, 6783. oxides of silver, 3230. Highlights of progress on satellite devices, J 68D5-365,

673 (1964).

consultative committee on international radio (CCIR) activities in the field of radio propagation, 3569.

technical, NBS: (1964), M264; (1965), M279. URSI symposium on electromagnetic wave theory

held in Delft, The Netherlands, September 6-

11, 1965, J 69D12-624, 1691 (1965). Highly ionized atoms, configurations s

2p" (n = 1,2,4,5), 5389.

purified Af-methylpropionamide from 20° to 40°, conductance of potassium chloride, 5967.

Hilbert's Nullstellenstaz, proof, 1240A. Hindsight technique in machine translation of natural

languages, J 66B2-71, 47 (1962). Hinges, builders' template, CS9-65.

Hiss, LF and VLF, in polar regions, J 69D9-558, 1239

(1965).

recorder, atlas of "VLF emission spectra observed, TN226.

recorder, instrument to continuously observe the VLF emissions, J 67D5-290, 569 (1963).

Historical, background of image formation, 6784. 574
foundations of research on statistical association M269, p. 3. note on the first years of electron microscopy, 3266A. survey of fading: at medium and high radio fre- quencies, TN133 (PB161634).

History of electrical units, J 66C2-94, 137 (1962). National Bureau of Standards, M275.

Pt 27, 5005. HN3 in inert and reactive matrices, infrared studies of

photolysis of; infrared spectrum of NH, 6136. HNCO, DNCO, infrared spectrum, NH radical reactions, 6184. DNCO, low temperature infrared study of inter- mediates in the photolysis, 6184. HO,, structure, 4487. Holder for, improved sample X-ray diffractometer, furnace, 5400.

solid-disk dielectric specimens, residual losses in a guard-ring micrometer-electrode, J 65C2-61,

101 (1961). Hollow cylinder, heat flow, rotating in a furnace with

a viewing port, 5558. Holmium, dynamic collective theory, 6456. erbium, absorption and scattering of photons,

3415. erbium, nuclear photoeffect, 5028. nucleus, direct observation of the optical anisotropy, 6699. Homeostasis, calcium, bone equilibrium in; blood, 6613. Homogeneity characterization of NBS spectrometric standards II: cartridge brass and low-alloy

steel, M260-10. Homogeneous anionic polymerization, molecular weights

of polystyrene initiated by sodium naphthalene, 5390. anionic polymerization, statistics of irreversible termination, 5698. conducting earth, propagation of electromagnetic

pulses, 3727. heterogeneous nucleation, case of con-current:

initiation of spherulite growth, 6804. magnetohydrodynamic turbulence, spectrum of

stationary, 9032. materials in the infrared at elevated temperatures, preliminary studies directed toward determination of spectral absorption coefficients, 8954. medium, guiding of whistlers, J 64D5-88, 505

(1960).

reactions, tables of chemical kinetics, Suppl. 2 to C510; Mono.34; Mono.34, Vol. 2. Homopolymers, bulk, on the crystallization temperature, dependence of the melting temperature,

3825. Horizontal polarization, smooth earth diffraction cal- culations, J 65D4-144, 397 (1961).

polarization, the lowest mode, VLF propagation under the ionosphere, J 68D1-323, 105 (1964). Horizontally stratified magnetoplasma, propagation of

vertically polarized electromagnetic waves, J

69D5-504, 693 (1965). Horizons in dentistry, 4683. Hosiery lengths and sizes — excluding women's (nonstretch), CS46-65. Hot methyl radicals with added organic compounds,

reactions of. Gas-phase photolysis of methyl

iodide, 6099.

rolled rail steel bars (produced from tee-section

rails), CS150-63. work in die steels, 4943. Hours, evidence of a stratified echoing region at 150 km in the vicinity of the magnetic equator during daylight, 6055. Household weights and measures, M234.

Houses, electrically-heated, field measurements of air

infiltrated in ten, 5359. Housing projects, two Air Force, heating performance

of air-to-air heat pumps, 6111A. How, method of rating the cooling load of refrigerated

trailers has been standardized, 3570. How much should a soil stack carry? 463A. much, what and why: hall generators, 6110. people influence experimental results, 6118. strong must a building be? 1732A. How to evaluate accuracy, 4107. determine stack load limits, 4106. evaluate accuracy of analytical procedures, 4684. HlS, HDS, and D-.S, mass spectra and metastable

transitions, 5459. Human engineering, design of a console for the comparison of volt boxes, 6119. Humidity generator, NBS two-pressure, and the NBS

standard hydrometer, comparison between,

6542. measurement of moisture in gas, 5391. moisture, 1963, symposium, 6466.

relative, and temperature in rubber laboratory of NBS, 6659.

relative, response of microchemical balances to changes, J 64C4-47, 281 (1960). standard, working, pneumatic bridge hygrometer,

6555. standards, 4108.

studies, radio refractometry and its potential, 8973. temperature on the oxidation of air-blow asphalts, 4995. Humites "Mg-SiO^Mg (F,OH) 2 , synthesis, J 65A5-122, 415 (1961). Hundred megapulse per second binary counter with impedance steering, 5155. Huygens' principle and the fundamental solution for decomposable differential operators, 9079. Hydrate, gehlenite, hydrothermal preparation, J 68A5-

292, 449 (1964). Hydrated aluminous cements, effect of heat-treatment on the constitution and mechanical properties, 3192A.

Hydrates, some observations on the calcium aluminate

carbonate, J 64A4-55, 333 (1960). Hydration numbers, near infrared spectrophotometric method for the determination, J 68A6-310, 625

(1964). Hydraulic ram-operated device, control system, TN237,

p. 7. Hydraulic research in the United States: 1960: M231.

1961: M238.

1962: M245.

1963: M249.

1964: M261.

1965: M270.

Hydraulics, circular sewers in accordance with the Manning formula, 3398. horizontal drains in plumbing systems, investigation, Mono.86. Hydrazoic acid, quadruple coupling constants from the microwave spectrum, 5605. Hydride, mercury, 4506. proton transfer reactions involving sec-propyl

ions, 6120. Hydrides, beta zirconium, statistical model, 6400. zirconium, 5084. zirconium, thermophysical properties, 4596. Hydriodic acid from electromotive force measurements

of hydrogen-silver iodide cells, thermodynamics of aqueous solutions, 6504. Hydrobromic acid, 4936. infrared spectrum, J 64A5-62, 377 (1960). 575
Hydrocarbon fires, extinguishing, effectiveness of some

powdered materials, 4052. flame inhibitors, electron attachment coefficients, 5326. Hydrocarbons, aromatic, photochemical changes in thin- layer chromatograms of polycyclic, 6285. charged liquid, electric currents and potentials re- sulting from the flow through short pipes, J 69C4-212, 307 (1965).

dipole moments, 3506.

electron impact studies of aromatic, 6027; 6028. Hs-transfer reactions in the gas-phase radiolysis, 6776. halogenated, effect, flame speed of methane, J 70A2-388, 133 (1966). quenching of the triplet state of acetone and bi- acetyl, 8968.

radiolysis or propane-d3 in the presence of organic compounds, 5625. saturated and H3 +, proton-transfer reactions, 6319.

solid, very low temperatures, infrared spectra, 3581. twelve-carbon, synthesis, purification, and physical

properties of seven, J 67A5-236, 475 (1963). vapor radiolysis of propane-A, 5066. Hydrochloric acid, activity coefficients, aqueous methanol (33.4 wt. %) with and without added sodium chloride at 25 deg, standard potential of the silver-silver chloride electrode, 5689. 50 wt. % methanol from 10 to 40 deg, standard

electromotive force of the hydrogen-silver

chloride cell and the thermodynamics of solutions, 6390. hydrogen sulfide precipitation of the elements from

0.2-0.5, 248A.

solution, ether extraction of the elements from six molar, 3535. Hydrochloride in aqueous solution at 25° C, osmotic and activity coefficients of its (hydroxymethyl) aminomethane, 8929. Hydrodynamic fluctuations and Stokes' law friction, J 68B4-126, 143 (1964). Hydrogen, air, argon, carbon dioxide, carbon monoxide,

nitrogen, oxygen, and steam, tables of thermo- dynamic and transport properties, 3806. apparatus for determination of PVT and O at low temperatures and high pressures, J 65C4-

76, 231 (1961). application of the method of polarized orbitals to the scattering of electrons, 3977. approximate wide-range equation of state, 3979. biomolecular exchange reaction, 4870. bonding in calcium-deficient hydroxyapatites,

3571. bromide and bromine, spectrophotometric determination, 9029. bubble chambers, cryogenic engineering, 3170. carbon monoxide system, physical equilibria and

related properties, TN108 (PB161609).

carbon, water, and aluminum, X-ray attenuation

coefficients from 13 to 80 Mev, 3916. choking two-phase of flow, 5232.

content, titanium standards, J 66A6-183, 483

(1962).

cooling, liquid, by helium gas injection, experi- mental investigation, 5349. cryogenic impurity adsorption, 3488. cyanide and deuterium cyanide, vibration-rotation bands, 6529.

electrode, 3572. equilibrium, 5067.

film, condensing and boiling, 3969.

fluoride, rupture-disk for anhydrous addition, J 70A2-389, 143 (1966).

fluorine flame and the vibration-rotation emission spectrum of HF, 4304. formation in the gamma radiolysis of ethylene, 4685.

gas, comparison of the low temperature adsorption

of nitrogen and methane, three different adsorbents, 5130. heat transfer coefficients, 4483. helium system, physical equilibria and related properties, TN109 (PB161610). hydrogen exchange collisions, 5308; 6008.

iodide, polymorphism, 8946.

ion concentration, 247A.

isotope distillation, pilot plant data, 3715.

isotopes, a study of embrittlement of high strength

steels by, I. Testing of steel rings as speci- mens, a comparison of hydrogen and deuterium

embrittlement, and permeation studies. II. A

comparison of gas contents and hydrogen or deuterium embrittlement resulting from elec- troplating processes, 5166.

isotopes, low temperature distillation, 4323.

liquefaction of, 6458; 6459. molecular detachment, 4403. nucleate boiling, 8903. ortho-para, conversion, kinetics study, 3382. oxygen, nitrogen, and helium, boiling heat transfer, TN317.

(para) — compressibility data, 15 to 100° K, to 350 atmospheres, J 67A2-204, 173 (1963). pressure-density-temperature relations and specific heats, J 65C4-76, 231 (1961).

profiles of Stark broadened Balmer lines, 5597. radiation in the night sky, interplanetary gas, 3234. reaction with carbon and nickel evaporated films, 6121. refrigeration system, intermediate size automatically controlled, 3425A.

retention system, for pressure calibration of micro- phones in small couplers. 5393. rotation-vibration interaction correction, molecular,

intensity of quadrupole fundamental, 6144. safety in the use of liquid, 6355. second and third virial coefficients, J 68A1-260, 121

(1964). shock-heated, and helium plasmas, measurements

of temperatures and densities, 3631.

silver chloride cell and the thermodynamics of

solutions of hydrochloric acid in 50 wt. %

methanol from 10 to 40 deg, standard electro- motive force, 6390.

silver iodide cells, thermodynamics of aqueous solu- tions of hydriodic acid from electromotive

force measurements, 6504.

solubility in cryogenic solvents at high pressures, thermodynamics, 6505.

solubility of helium in liquid, 6369. 2P state, electrons of near-threshold energy, 6447. Hydrogen atom, addition to olefins: relative rates at the two carbon positions and derived heats of formation of several alkyl radicals, 6785. addition to propylene, activation energy, 4344.

addition, solid four-carbon olefins, 5392. bombardment of polystyrene, free radicals, 4070. formaldehyde reaction, isotope effect, 3597. reactions with propene at 77° K. Disproportiona- te and recombination, 4109. Hydrogen, atomic, ionization of electron impact, 5328. atomic, scattering of electrons, 3122. atomic spectroscopy, NSRDS-NBS4, Vol. I. Hydrogen atoms, alkyl radicals at low temperatures,

disproportionation-combination reactions, 5996. double bond isomerization of olefins, 3334.

(

2P) and molecular nitrogen, 4835. 576
slow electrons, measurement of the cross section for elastic scattering, 5467.

solid oxygen at 20° K, reaction, 3291.

solid propene at low temperatures, reaction, 3858. Hydrogen chloride, argon and carbon-dioxide, broadening of the nu3 lines of HCN, 5216. carbon monoxide, foreign gas broadening of the

lines, J 66A5-177, 435 (1962).

matrix-isolated, 4902. nature of the compound obtained from aqueous

cesium chloride solution, 5776.

rotational constants, 3863. Hydrogen and deuterium, atoms of, electron spin res- onance spectra of free radical intermediates formed by reaction of polystyrene, 4062. atoms, reaction of deuterated polystyrenes, 6335.

electrolytic through iron permeation rates, J 67C2-

124, 111 (1963). Hydrogen liquid, aluminum magnet, 4478. bubble chambers, 6180. chemical and nuclear rockets, 3602.

liquid nitrogen discharging into a vacuum, a pre- liminary study of the ortifice flow characteristics, 5883. performance of point level sensors, 6469. pressurization and stratification, 3970.

refractive index and dispersion, TN323.

refrigeration system, closed circuit, 3469. saturated, densities, 4347.

static liquid nitrogen, nucleation characteristics, 6235. technology and uses, 6424. uninsulated lines, transfer, 3890. uses and technology, 6157. Hydrogen negative ion, 4984.

electron impact, 3522.

ionization, 3592. Hydrogen and nitrogen, linewidths in the 2-0 band

of carbon monoxide, 6178. oxygen, and refrigerants 12 and 11, choking two- phase flow literature summary and idealized design solutions, TN179.

oxygen, some idealized solutions for choking, two

phase flow, 5673. system, physical equilibria and related properties, TN110 (PB161611). Hydrogen, normal, compilation and correlation of the P-V-T data, from saturated liquid to 80° K,

3376. low temperatures to 300° K and from 1 to 100 at- mospheres, tabulation of the thermodynamic

properties, TN120.

low temperatures to 540 °R and from 10 to 1500

psia, a tabulation of the thermodynamic properties, TN120A.

Hydrogen sulfide, determination of rhodium in rhodium- uranium alloys by precipitation, 5287.

precipitation of the elements from 0.2-0.5 normal

hydrochloric acid, 248A; 4111.

sulfur, and accelerators, reaction of with propylene and butadiene, J 65A1-88, 79 (1961). Hydrogen-methane, solid-vapor equilibruim in the

system, 9011. Hydrogenated rosin, zinc oxide, o-ethoxybenzoic acid and eugenol, physical properties of cements

based on, 6290. Hydrogens, melting pressure equation, 4760. Hydrolysis, acetal in dimethyl sulfoxide-water solvents

at 15, 25, 35°, kinetics of the acid-catalyzed,

6170.

acetal in N-methylpropionamide-water and N-Ndimethylformamide-water solvents at 20, 25,

30, and 40°, 4724. formation of dimethoxychloroborane, heats, J 65A5-124, 435 (1961).

Hydrolytic fragments, acidic, fluorescence, 5947. Hydromagnetic wave in an inhomogeneous, cylindrical plasma, J 69D3-475, 389 (1965). waves and ELF oscillations in the ionosphere, J

64D6-96, 650 (1960). waves in the ionosphere, attentuation, J 69D3-

471, 361 (1965). Hydromagneto-ionic theory, collision effects, J 69D1-

446, 95 (1965). Hydrometeors, polydispersed in the X 0.1 to \ 10 cm

range, complete scattering, J 69D6-523, 893

(1965). Hydroperoxide in diethyl ether, 4931. Hydrostatic equilibrium in determining the temperature distribution in the outer solar atmosphere, 3899. pressure, effect, crystallization, kinetics of natural

rubber, 5747. pressure, effect upon the relaxation of birefrin- gence in amorphorus solids, J 65A4-112, 283

(1961).

pressures, effect, crystallization kinetics of natural

rubber, 5309. Hydrothermal preparation of a gehlenite hydrate, J

68A5-292, 449 (1964). Hydroxide solution, 50% sodium, 4243. Hydroxylapatite derived from solutions behavior of aqueous suspensions, surface composition,

6485. strontium, 3477.

synthetic, comparative fixation of calcium and

water systems, 4293; 4914. Hydroxyapatites, calcium-deficient, hydrogen bonding,

3571. Hydroxyl, free, radicals, microwave Zeeman effect, 4180. paramagnetic resonance, 3278.

2IIk levels, microwave Zeeman effect, 4773. Hydroxyl radical, emission in the 1-3 micron region produced by the H+03 atomic flare, 3464. emission, vibrational excitation, 4520. improved measurement of dipole moment, 6791. vibration-rotation spectrum, 4489. Hydrotyl radicals, free, microwave Zeeman effect, 4773. Hydroxyl radicals in the H + 03 atomic flame, 4445. Hydroxylamine, ionization constant, 4358. Hydrozoic acid, blue material, 3279. Hygrometer, barium film, element, 3372.

film, element on radiosonde flights, performance

of the barium fluoride, 5557. NBS standard, Mono.73; 6542; 9087. pneumatic bridge, for use as a working humidity

standard, 6555. Hygrometry, continuous-absorption, with a pneumatic

bridge utilizing critical flow, 6657. Hyper elliptic, 6532. Hyperbolic, exponential, and circular functions, AMS55. Hyperfine field in dilute alloys, of nickel in iron, nuclear resonance, 5521.

fields in nickel-rich nickel-cobalt alloys, nuclear

resonance, 8900.

splitting for the lithium atom, calculations, 5220. transitions in rubidium 87, vapor, 3230A.

Hyperfine structure, doubly ionized praseodymium,

nuclear magnetic moment of Pr1 ", 6894;

6895. Hg103 *, Hg195 and Hg106 * by Zeeman level crossings,

6786. intercombination line intensites in the spectra of magnesium, zinc, cadmium, and mercury, 4686.

isotope shifts in the 2537A line of mercury, 4110.

isotope shifts in the 2537A line of mercury by

a new interferometric method, 5394. 577
rotational spectrum, 5006. spectrum of mercury hydride, 5395. Hypergeometric functions, AMS55.

Hyper-Poisson distributions, estimation of parameters,

6744. two-parameter family, 5895. Hyperon-nucleon interactions, S-wave, and SU3 symmetry, 6415. Hypervelocity, cratering data, crater depth model for

the regime of partial fluidity, 5396.

missile, unstable detonation, 5836. Hypo-elasticity, remarks, J 67B3-98, 141 (1963). second order waves, 4542.

I", laser double-quantum photodetachment, 6825. near threshold, energy dependence for the photo- detachment, 6039. IAU commission 14, spectroscopy, annual report, 4492. I-beams, extruded and riveted, experimental investigation of creep deflection, 3540.

Ice, bath, temperature of thermocouple reference junctions, J 69C2-189, 95 (1965;. high pressure single crystal studies, 6779. infrared studies of dense forms, 3582. nucleation by photolyzed silver iodide, 6123.

solid methane, and ammonia in the vacuum ultraviolet, absorption spectra, 3416.

Ideal, gas thermodynamic functions and isotope ex- change functions for the diatomic hydrides,

deuterides, and tritides, Mono.20. Lovibond color system, J 66C2-93, 121 (1962);

5007. Simon liquefier, yield, 5397.

Idealized solutions for choking two-phase flow of hydrogen, and oxygen, 5673. Idempotent Boolean relation matrices, J 67B4-107, 249

(1963).

Identification, color, problems, 4924. energy levels of negative ions, 6787 ; 8914.

fiber blends by infrared spectroscopy, 4112. GA II lines in Stellar spectra, 4687. metallurgical reactions and their effect on the mechanical properties of 17-7 PH stainless steel, J 66C2-92, 113 (1962).

textile coatings by infrared spectroscopy, 3573.

Identified with acoustic plasma waves, field aligned Eregion irregularities, 5356.

Identities, higher order integral, with application to bounding techniques, J 65B4-65, 261 (1961).

Identity of three generalized master equations, 6254. Ignition and spark-ignition systems, bibliography, M251.

Ilemite hermatite solid solutions, magnetic properties

of some, 5455; 6186. Image gloss test: apparatus and procedure, 4113; 4689. formation, historical background, 6784. source technique for calculating reflection of gam- ma rays or neutrons, 6593. Images, dislocation, formed in transmission electron microscopy, 6703. Imaginary, real, and absolute value of vector ratios, nomographs for computing, 6889. Imaging, radiation, technique for thermal conductivity measurements above 1,000° C, 4792. Immiscibility and the system lanthanium oxide-boric

oxide, 4114. Immiscible microphases in alkali borosilicate melts, re- arrangement kinetics of the liquid-liquid, 8983. Immittance function with two negative impedance converters, 4966. Impact, electron, dissociation of H2 +, 6706.

electron, excitation of optically forbidden states in the ionization continuum, 6748.

electron, ionization of atomic hydrogen, 5328.

filament by high-speed projectile, effect of air drag, J 66C4-107, 317 (1962).

loading, stress-strain relationships in yarns, 5706;

9047. new technology on the forest industries, 6788.

noise in multifamily dwellings, 6124. parameter formulation of the theory of atom-atom

collisions, TN185.

parameter treatment of vibrational excitation, 6125. strain distributions resulting from rifle bullet, 9047.

stress-strain properties of textile yarns subjected

to rifle bullet, 9046.

studies, electron, of aromatic hydrocarbons. II. Naphthacene, naphthaphene, chrysene, triphenylene, and pyrene, 6027.

studies, electron, of aromatic hydrocarbons. III. Naphthalene, and anzulene, 6028.

tensile, high speed, behavior of filamentous materials, 5212. Impedance, TN311.

attenuation and phase shift, standards and measurement, 6396. bridge as an equality indicating device, temperature

coefficient of RF permeability measurement,

J 70C1-217, 19 (1966).

circular loop in an infinite conducting medium, J

66D4-212, 499 (1962).

coaxial line, variable characteristic, 6576. commercial Leclanche dry cells and batteries, TN190.

converters, two negative, 4966. current: half-wave cylindrical antenna in a dis- sipative medium, J 64D4-70, 365 (1960).

cylindrical dipole having a sinusoidal current dis- tribution in a homogeneous anisotropic iono- sphere, J 68D4-355, 379 (1964).

equivalent, of a wire grid parallel to the interface between two media, numerical investigation, J 66D1-169 7 (1962). ground-based antenna, possible influence of the

ionosphere, J 66D5-216, 563 (1962). high frequency, 5042. input, change due to ground for dipole antennas, Mono.72.

input, current on of a cylindrical antenna, J 66D1-

170, 15 (1962). Leclanche cells and batteries, 5398. long wire suspended over the ground, 4203. measurements and standards, J 64D6-96, 598

(1960). meter, microwave, capable of high accuracy, 3386. microwave, measurements and standards, Mono.82. monopole antenna with a circular conducting-disk ground system on the surface of a lossy half- space, J 65D2-118, 183 (1961). monopole antenna with a radial-wire ground sys- tem on an imperfectly conducting half space, Part I, J 66D2-158, 175 (1962); Part II, J

68D2-328, 157 (1964); Part III, J 68D3-345, 297 (1964).

radiation, a source near reflectors, 5613. sealed nickel-cadmium dry cells, 6789. short dipole in a compressible plasma, J 69D4-491,

559 (1965). standards, four-terminal-pair networks as preci- sion admittance, 6083.

steering, a hundred megapulse per second binary

counter, 5155. through an adapter without introducing additional

error, measuring, 6858.

tube, portable, 5157. Impedances, of long antennas in air and in dissipative media, J 67D3-269, 355 (1963). transmission line or waveguide line characteristic, relationships between different kinds of net- work parameters not assuming reciprocity or

equality, 6343. 578
Imperfections, crystal, magnesium fluoride, 6672. Implication, diurnal, seasonal and geographical variations in composition of high atmosphere from

F-region measurements, 6255.

lasers of an aspect of interference at high field strengths, 5912. Implications of aircraft interference patterns in troposcatter reception, J 67D4-276, 405 (1963).

possible, observed profile of [X6347] Fe X, 8948. Importance, environment in, fatigue failure of metals,

5761.

ratings, flare—some hope for improvement, 6070. surface films, 6790. Impregnated sole leather, dimensional stability, 3185. Impression, Japan, 5399. materials, agar, physical characteristics, 9022. materials by a specification, the definition of alginate, 9067. Improved, cathode ray tube storage system, 649A.

dc power regulator, 3425.

electron filter lens, 4115. measurement of the electric dipole moment of the hydroxyl radical, 6791. NBS abrasive jet method for measuring abrasion

resistance of coatings, 3574.

resistance thermometer, 4485. sample holder, X-ray diffractometer furnace, 5400. standards for the calibration of vibration pickups,

4116. structure determination for vinyl fluoride, 3971. ten-picofarad silica dielectric capacitor, J 69C3-196,

173 (1965). transducer for external recording of arterial pulse waves, 5401.

zinc oxide-eugenol type cements, 4690. Improvement, bounds to eigenvalues of operators of the form T*T, J 68D4-129, 173 (1964).

flare importance ratings, 6070. properties of sole leathers by impregnation with

polymers, 4117. Improvements in radio propagation prediction service, 3575. Improving, forecasts of geomagnetic storms, 5168.

rectifier circuits, 4118. Impulse, sparkover, voltage, 200 cm sphere gap, 5674.

voltages, measurement of short duration, 5298.

Impurities, ionic crystals, drift mobility and diffusion, 6709. metals, thermal diffusion of substitutional, 9109. Impurity, controlled properties of ionic solids, 5402;

6792.

diffusion—Bcc, diamond, and Fee structures, 5978.

effects in high purity metal, 4119. nucleus in dilute ferromagnetic alloys, nuclear magnetic relaxation, 6232. Inactivation of bacteriophages by metals, 6203.

Inch, one ten-millionth, 1435A.

Incidence, equation AAT=aA, 3837. pulse movement at 100 kc, 5525. Inclusion of perfluoromethyl groups in the lattice of copolymers of tetrafluoroethylene and hexafluoropropylene, J 69A5-369, 481 (1965).

Inclusion, theorems for congruence subgroups, 3231.

third zonal harmonic in an accurate reference orbit of an artificial satellite, J 70B1-166, 17 (1966).

Incoherent, ineleastic neutron scattering and self-diffusion, 6126. scattering of radio waves by a plasma, effect of coulomb collisions, 6441. Incoherent scatter, echoes from the ionosphere, on the

absolute intensity, J 66D4-203, 395 (1962).

technique, profiles of electron density over the magnetic equator, TN169.

technique, using the equatorial electron density

profiles to 5000 KM, 5336. techniques, 4638.

Incoherent scattering, free electrons as a technique for studying the ionosphere and exosphere: some

observations and theoretical considerations, J

65D1-97, 1 (1961) ; 3231A. radiowaves by a plasma, 5172.

Inconel, coated and uncoated, total hemispherical emittance, types 321 and 430 stainless steel, J 66C3-

102, 261 (1962).

Increase, ionization associated with geomagnetic sudden commencements, 4120. mileage of leather soles, 3576. Increased, confidence in calibration capability through

interlaboratory comparisons, M248, p. 153. scope of ellipsometric studies of surface film formation, M256, p. 97. Indentation measurements on a pure-gum rubber vulcanizate, compliance-time-temperature relationships, J 69A4-354, 347 (1965). Independent particle model and the metastable levels

in the continuum, 5474; 6206. Index, air, radio refractive, 5038.

alphabetical, tables of chemical kinetics, homogeneous reactions, Suppl. 2 to C510.

atmospheric, of refraction, correction of optical dis- tance measurements for fluctuating, 6660. bibliography on vacuum and low pressure measurement, Mono.35. communications of ACM, 5404. distributions of mathematical statistics, J 65B1-45,

23 (1961). Journal of Association for Computing Machines,

5403. measurements, refractive, 4272. measuring radio refracture, TN99 (PB161600).

photonuclear data, M277.

profile, refractive, in VHF reflection from a tropo- spheric layer, 6129. radio refractive, near the ground, turbulent characteristics, 5807. refraction as a means for study of plasma config- urations, 6521. refraction of air, the absorption and dispersion of centimeter waves by gases, J 67D6-297, 631

(1963).

refraction surfaces for plasma waves, J 69D4-490,

539 (1965).

refractive, and dispersion of liquid hydrogen, TN

323.

refractive, Young's modulus as the result of successive heat treatment, changes in relation, 5945. report of the National Conference on weights and

measures. From the first to the forty-fifth, 1905 to 1960, M243.

Indexes, computer-produced, characteristics of programs

for KWIC, 5229.

locators, M274.

Indexing, M276.

associative, M269, p. 201. automatic, M269.

automatic: a state-of-the-art report, Mono.91. automatic and classification, M269, p. 211. automatic, using cited titles, M269, p. 213.

citation, M269, p. 189. experiments in automatic, experiments in information correlation; training a computer to assign

descriptors to documents, 6509. Indication limit, 4691. Indicator acid-base equilibria in a methanol-water sol- vent, salt effects and medium effects, 6356.

Indices, Hall generators, sensitivity, 6361.

inertia, conditional, 3896.

refractive, gases at 47.7 gigahertz, absolute deter- mination, 6576A.

sensitivity, Hall generators, TN233.

solar activity, 4121. 579
Indium, alloys in the intermediate state, thermal resist- ance, 3876. antimonide and indium arsenide, magnetoresistive

effects, 3622. antimonide at low temperatures, thermal conductivity, 3354. antimonide, mechanical and electromechanical properties, 3632. copper above aqeuous solutions, glow discharge

spectra, 3222. lead alloy, four critical fields in superconducting,

6080. radiochemical separations, amalgam exchange, 4258. Indoor tester for measuring tire treadwear, 3131. Induced, collision, microwave absorption in compressed

gases, 5952. nuclear spin transitions in antiferromagnetic KMnF3 , ultrasonically, 6517. pressure, trapping phenomenon in silver iodide, 6312. pressures in polymers, optical observations, 5547.

shifts, pressure, infrared lines due to polar molecules, 5591. Inductance, equations, exact, rectangular conductors with applications to more complicated geometries, J 69C2-192, 127 (1965). standards, calibration, Maxwell-Wien bridge cir- cuit, J 65C3-69, 183 (1961).

Induction, arbitrary magnetic, radio wave reflections at a continuously stratified plasma with col- lisions proportional to energy, 5623. arbitrary magnetic, reflection and transmission of radio waves at a continuously stratified plas- ma, J 66D-176, 81 (1962).

oscillating magnetic dipole over a two layer ground, 2597A.

small loop moving with a magnetostatic dipole toward a conducting half space, J 66D6-233,

731 (1962). Inductive voltage divider calibrations at 400 and 1000

Hertz, international comparison, 6595. Inductive voltage dividers, 4986. accurate measurement of voltage ratios, 6427. calculable relative corrections, 5405. calibration of, and analysis of their operational

characteristics, 5737. comparison calibration, 5248; 5959. Inductor, computable, new type, J 67B1-91, 31 (1963).

Industrial, growth, standards—foundations, 6399. progress, significance of NBS, 1866A.

revolution, second, 5794.

significance of NBS research, 5008.

Industries, forest, impact of new technology, 6788. Industry, American Rubber, NBS activities, 5497. challenge; weights and measures, 6532. Colorado, present and future of astrophysics, 6470.

Inelastic, collisions of electrons with atoms, 3436. electron scattering from rare gases, determination

of oscillator strengths in the continuum, 6127. electron scattering in the rare gases, structure be- yond the ionization limit, 5707.

electron scattering, radiative tail, 6328. neutron scattering, incoherent, and self-diffusion, 6126. scattering electrons, calculation of the radiative

tail, 5937.

scattering, large-angle, 500-keV electron, 5441. scattering of electrons by helium, 6793.

Inequalities, circles, packing, 5553. permanents and permanental minors, 6794.

probability, of the Tchebycheff type, J 65B3-59, 211 (1961).

solutions of mixed boundary value problems for

elastic plates, J 68B2-121, 75 (1964). Inequality of L. V. Kantorovich, on a generalization,

3269.

Inert, enclosed pump for shaped flow of ultraclean

solutions, 4122. gas-sensitized and direct radiolysis and photolysis

of methane in the solid phase, 6696. gases, added, on gas phase radiolysis propane,

effect of pressure, 6448. gases, effect of pressure, 5758. reactive matrices, infrared studies of photolysis of HN.,; infrared spectrum of NH, 6136. Inertia indexes, conditional 3896.

Inertial, effects in the phenomenological theory of thermal diffusion in liquids, 4692. seismograph design—limitations in principle and

practice, 4693. Inexpensive f/6 grating Littrow spectrograph, 3132. Inference, empirical, of Doppler widths, 5240. Inferring the refractive-index structure of the tropo- sphere from electromagnetic scattering experi- ments, J 69D6-521, 881 (1965).

Infiltrated, air, in ten electrically-heated houses, field measurements, 5359.

Infinite sums involving zeros of Jo(x), J 68B1-111, 17

(1964).

Influence, circular ionospheric depression of VLF propagation, J 68D8-389, 907 (1964). crystallographic orientation on pitting of iron in

distilled water, 3232. data processing on the design and communication

of experiments, J 68D9-402, 1021 (1964). development of chemistry, the calorimeter, 6432. earth curvature and the terrestrial magnetic field on VLF propagation, 3577.

finite ground conductivity on the propagation of VLF radio waves, J 69D10-570, 1359 (1965). gamma radiation and alkali treatment, pyrolysis

of polytrifluoroethylene, 6324. inhomogeneous ground on the propagation of VLF

radio waves in the earth-ionosphere waveguide,

J 69D7-531, 969 (1965). ionospheric conditions on the accuracy of high fre- quency direction finding, J 65D3-122, 225

(1961). irregular terrain on propagation, 6795; 6798.

irregularities of terrain and of vegetation on

radio wave propagation, J 68D5-361, 560

(1964). long-term magnetic activity on medium frequency

sky wave propagation, 9017A.

lower ionosphere on propagation of VLF waves to great distances, J 67D4-271, 375 (1963). lowered permissible dose levels on atomic energy

operations in the United States, 3838. metastable oxygen molecules on ozone and airglow,

6451. paramagnetic resonance on the static susceptibility. Spin-lattice relaxation time of cupric sul- fate pentahydrate, 6796. radiant energy source on bitumen oxidation, 6128. refractive index profile in VHF reflection from a

tropospheric layer, 6129.

sector ground screen on the field of a vertical antenna, Mono.60. source distance on the impedance characteristics of ELF radio waves, 3578.

spin paramagnetism on superconductivity, 6797._ temperature and pressure on rheological properties

of polymers, 5009. temperature and relative humidity on the photo- graphic response to Co"" gamma radiation, J 65C3-72, 203 (1961).

Influences, philosophical, on radiation protection standards, 8936. Information, associated, and chemical structures, digital handling, 6693.

centers, M276.

chemical structures as—representations, transfor- mation, and calculations, 6633. 580
correlation, experiments, experiments in automatic

indexing; training a computer to assign de- scriptors to documents. 6509. exchange, M276.

handling in the National Standard Reference Data

System, TN290.

lower ionosphere, on the use of VLF measurements

(especially during solar flares), 8921A.

microphotograph, 8915. precision optical scanner, digitizing pictorial, 5991. problem in government, 5010. processing and machine translation, bibliography

of foreign developments, TN193.

recording and association system, M269, p. 181.

scientific, activities at NBS, 5653. search, currently used, replica copy retrieval, the rapid selector, 5786.

selection systems retrieving replica copies: a state- of-the-art report, TN157.

systems, mathematical models, J 67B4-107, 249

(1963). theory and coding, J 64D6-96, 671 (1960).

theory, application to analysis of contingency

tables, J 66B4-87, 217 (1962). Information retrieval, M269, p. 149; TN290.

peek-a-boo, 5104. peek-a-boo principle, 4479. system, operational, field of cryogenics, 5194. Informational retrieval systems, screening method,

3943. Infrapolynomials, prescribed coefficients, location of the zeros, 6256. prescribed coefficients, structure, 6260. prescribed values at given points, zeros of, 5811. Infrared, absorptance by a regular band, technique for

calculating, 4338. atmospheric transmission to solar radiation, 3659. band intensities of diatomic molecules, 3499. bands of carbon disulfide, high resolution investi- gation, J 66A3-161, 259 (1962).

crystallinity, and creep studies; ethylene-propyl- ene copolymers, 6052. determination of the structure of carbon suboxide,

high-resolution, 6113.

dispersion, oxide glasses, 5408. elevated temperatures, preliminary studies direct- ed toward determination of spectral absorption

coefficients of homogeneous materials, 8954. emission spectra of gaseous B2 Of, and B2 02 , 3579. emission spectrum of gaseous HBO, 3580. emission spectrum of HBr excited in an electric discharge. Determination of molecular constants, 6800.

far, radiant energy from sources, 5037.

far, (30 to 1000 microns) wavelength calibrations, J 67A4-225, 351 (1963).

far, vacuum grating, J 67C3-131, 207 (1963).

flux averaging devices for, TN279.

lines of HC1 perturbed by noble gases, shift of the R(0) and P(l), 9006.

lines, pressure induced shifts, polar molecules, 5591. materials, evaluation of some glasses, 3537. measurement of optical properties of metals, M256,

p. 119. measurements on allene and allene-d4 , 6801. microwave spectra of C1CN, 6799. properties of the low chromosphere, effect of de- partures from the Saha equation. Thermodynamic structure of outer solar atmosphere,

3887. quantitative, spectrophotometry, heated cell for, 3564.

reflectance, TN267.

refractive indices and transmittance of several optical glasses, 3293. spectrophotometry, 4694. study of certain solids in gaseous discharges, 3203A.

study of intermediates in the photolysis of HNCO

and DNCO, low temperature, 6184. study of solids, diamonds and sapphires as cell materials, microtechnique, 4177. transmission along slant paths in the stratosphere,

4698. transmission, atmosphere to solar radiation, 5410. transmission of clouds, 3839. transmittance of certain silicate glasses, effect of

fluorides, 3193.

ultraviolet spectra of the free radical NCN. Matrixisolation study of the photolysis of cyanogen

azide, 6850.

ultraviolet spectrum of the free radical FCO.

Matrix-isolation study of the reaction of F

atoms with CO, 6852. wavelength dependence of the total absorptivity

of electroplated silver, 4699. Infrared absorption, carbon dioxide from 5.3 to 4.6 microns, J 67A3-207, 219 (1963). carbonyl sulfide, J 66A2-147, 163 (1962). spectrum of nitrous oxide (N2 0) from 1830 cm-1 to 2270 cm"1

, J 68A1-255, 79 (1964). technique for calculating, by a regular band, 3954. Infrared absorption spectra, 5407. 1-acetamido pyranoid derivatives and reducing,

acetylated pyranoses, J 65A1-81, 31 (1961).

acetylated aldopyranosides. III. Conformations of the pyranoid sugars. J 64A5-65, 405 (1960). acetylated pyranoses, conformations of the pyranoid sugars, J 65A3-109, 249 (1961).

B2O3, B2O3, and BO2 in solid argon matrices, 5406. carbon suboxide and malononitrile in solid argon

matrices, 5407.

solids at high pressure, 3799. study of mutarotational equilibria of monosaccharides, J 66A1-139, 31 (1962). Infrared spectra, 6114; 6818. asphalts: aspects of the changes caused by photooxidation, J 68C2-157, 115 (1964). carbon monoxide as a solid and in solid matrices,

4213. C

lfH2 , C-°C13 H2 , and C"H2 , high resolution, 6114.

crystalline inorganic borates, J 68A5-294, 465

(1964). ethane carbon-carbon distance obtained, 3203. HCN from 2000 to 3600 cm"1

, 6130. high resolution, molecular vib-rotors, the theory and interpretation, 5493. hydrated borates, J 70A2-391, 153 (1966). NF, NCI, and NBr, 6131.

solid hydrocarbons at very low temperatures, 3581. structures and thermodynamics of gaseous LiO,

Li2 0, and Li2 02 , 5763. Infrared spectroscopy, determination of propylene in ethylene-propylene copolymers, 5286.

identification of textile coatings, 3573. oxidation rates of air-blown asphalts, 4575. recent advances, 4264. stratospheric moisture measurements, 5704; 9042. weak charge-transfer complexes, 6132. Infrared spectrum, 5123.

acetylene, 4125.

acetylene-di, 4695. carbon tetrafluoride, 4696. CF2 , 6134. dideuteroacetylene (C2 D2 ), 4697. difluoramine, 5409.

free radical C1CO. Matrix-isolation study of the

reaction of CI atoms with CO, 6851. HCO, 6135. NH; infrared studies of the photolysis of HN> in inert and reactive matrices, 6136. matrix isolation, 6131. matrix-isolation, free radical CCO, 6848. matrix-isolation, free radical NH2 , 6849.

nitric oxide, 6143. 581
radical NCN, 6802. structure of gaseous ALO, 6133. structure of the NF2 radical, 4124. V2- ua band of C"C12 H8 , J 67A3-208, 225 (1963). Infrared studies, aragonite, calcite, and vaterite type

structures in the borates, carbonates, and ni- trates, J 65A3-100, 173 (1961). chemistry of free radicals, low temperature, 6183. dense forms of ice, 3582. photolysis of HN3 in inert and reactive matrices;

the infrared spectrum of NH, 6136. Infrasonic, observations of the May 16, 1964, volcanic explosion on the island of Bali, 6803. pressure waves associated with magnetic storms,

4701. pressure waves, auroral-zone observations, related

to ionospheric disturbances and geomagnetic

activity, 5209. Infrasonics, 4700.

distribution S-[-f(^)]'-(f[H])

and its application to signal statistics, J 68D9-

399, 995 (1964).

Inhibition, diffusion flames by methyl bromide and tri- fluoromethyl bromide applied to the fuel and

oxygen sides of the reaction zone, J 65A4-118, 389 (1961). opposed-jet methane-air diffusion flames, the effects of alkali metal vapors and organic halides, 5411. Inhomogeneous earth, theory of radio wave propagation, J 67D1-242, 39 (1963).

glasses, performance of lenses, 9089. ground plane, theory of an antenna, 5804. layers with asymmetric profiles, a note concerning

the reflection of waves, J 69D5-505, 701 (1965). media and guided waves, J 68D4-359, 469 (1964). media, magneto-ionic propagation. Part I. Transverse propagation, J 69D9-563, 1285 (1965). media, magneto-ionic propagation. Part II. Oblique

propagation, J 69D9-564, 1297 (1965).

Initial, phase of a solar proton event, diffusive model,

5873. preparation and metastable transitions in mass

spectra, 6137.

results of a new technique for investigating sferic

activity, J 65D2-114, 157 (1961).

states, arbitrary, generalized master equation, 6774.

Initiation of spherulite growth: case of con-current homogeneous and heterogeneous nucleation, 6804.

Injection, helium gas, experimental investigation of

liquid hydrogen cooling, 5349.

Inks, and pens, ball, composition, properties and be- havior, 1291A.

writing, comparisons of, by paper chromatography,

209A.

Inlay, dental, casting wax, 4286.

Inlet structures, tapered, pipe culverts, 6422.

In-line, interferometer, 1040A. waveguide attenuator, 6138. Inner, shell electron excitation in neutral Kr and Xe,

optically observed, 6274.

solar corona during June 1959, 3335A.

Inorganic carbonates and nitrates, 4728. carbonates and nitrates from low temperature in- frared spectroscopy, lattice frequencies and ro- tational barriers, J 66A5-176, 407 (1962). complexes, designation of Ligand positions, 6684. compounds, classification and properties, 5233.

fluorine compound, heat of formation, 4678. materials, eleven, compressibility, J 69A1-324, 29

(1965). phase in calcified tissues, 3852. semiconductors, properties and applications of a

number of single-element and binary compounds, TN153.

solutions, aqueous, deuterium isotope effect on glass transformation temperatures, 5289.

Inositol derivatives, J 68A3-275, 287 (1964).

Input, admittance of linear antennas driven from a

coaxial line, J 67D1-246, 83 (1963). computers, original-document scanners, TN245.

impedance and current on of a cylindrical antenna, J 66D1-170, 15 (1962). impedance change due to ground for dipole antennas, Mono.72.

network, multiple isolated, with common output, J 64C3-40, 225 (1960).

Insect screening and louver cloth, vinyl-coated glass

fiber, CS248-64.

Insects, angels, and weather, J 68D8-387, 895 (1964).

Insertion, loss concepts, 6139.

ratio measuring systems, complex, precision detector, 6305. Insoluble protein of tooth and bone, characteristics, 5947.

Inspection, processed photographic record films for aging blemishes, H96. programs for randomly failing equipment, optimal

periodic, J 67B4-104, 223 (1963).

service, cement and concrete reference laboratory,

for concrete testing laboratories, 6433.

Instability, boundary-layer, 5063. constant by calorimetry, determination of composition of complexes, 6688. equatorial F layer after sunset, 5412. phase, tropospheric relay link, 5560. resistance strain gages at elevated temperatures, method for measuring, 5142. two-stream plasma, source of irregularities in the

ionosphere, 5833.

Installation and maintenance of electric supply and

communication lines, safety rules, H81.

Installations, high-energy electron accelerator, shielding, H97.

Instant color correction, 6140.

Institute for, Applied Technology, 6452. Basic Standards, role in plans for better measure- ment accuracy, 9081. Laboratory Astrophysics, Joint, National Bureau

of Standards and University of Colorado, Boulder, Colorado, observatory report, 6241.

Instruction, manual, IQSY No. 1, world days, 5430. semi-automatic, on the Zephyr, 306A.

Instrument, acoustical interferometer, for measuring

low absolute temperatures, 4472. calibration systems, realistic evaluation of the precision and accuracy, J 67C2-128, 161 (1963); M248, p. 63. continuous measurement of the density of flowing

fluids, 5413. interferometric, rapid measurement of small diameters, 3972. inventory, computer control of precision, 6649. landing system, TN324.

maintenance and calibration data processing for

control of, M248, p. 233. modifications, TN286.

modules, standard nuclear, 6391.

recall and recycling analysis through automatic

data processing method, M248, p. 217.

recall concepts and policies, M247, p. 203. transfer, for the intercomparison of microwave power meters, 3410.

versatile pneumatic, based on critical flow, 165A.

Instrumentation, advances in electrical, 6587. bench for physical laboratories, 4477.

data, transistorized building blocks, TN68 (PB161-

569); TN168; TN218; TN268.

literature, guide, M271.

literature reference file, aspects of NBS, 5929. moderation, 6871. 582
optical, for the biologist: microscopy, 8924. propagation and direction-finding measurements, J

65D3-127, 253 (1961).

radiation, H92.

radiation techniques, radioisotope techniques, and

activation analysis, Julv 1963 to June 1964, TN248.

radio propagation research, TN111 (PB161612).

radio frequency, TN77 (PB161578).

scientific research, 1741A.

Instruments, AC-DC transfer, practical aspects, TN257.

electrical, calibration, 3968. pressure measuring, at NBS, static and dynamic

calibrations, 3792. regulated power supply, 3748. rotating diamond-abrasive dental, methods for

evaluation, 2197A.

standards, and measurement techniques for x-rays, gamma rays, and neutrons, H85. temperature measuring, at the NBS, calibration, M248, p. 25. Insulated, flat-roof constructions, 4749; 4994. loaded loop antenna immersed in a conducting medium, J 69D2-465, 287 (1965). Insulating board, structural (wood or cane fiber), R179-63.

Insulation, condensing-vacuum, study, 3403.

cryogenic, 3171. cryogenic, new steady-state calorimeter for measuring heat transfer, 5880. design, cryogenic piping system, 3489.

effect, weathering of smooth-surface built-up roofs exposed to solar heating, 5310. evacuated powder, low temperatures, 3204. evacuated-powder, metal powder additives, 3637.

flat-roof construction, 4168. heat and flat roofs moisture effects, 3213. low temperature, 4734. multiple-layer, 3656. multiple layer, cryogenic applications, 4184.

perlite for cryogenic, 5559. resistance measurements, 4702. sound, of wall, floor, and door construction, Mono.77.

thermal, 5260.

Insulations, conductive-disk method of measuring the thermal conductivity, 4988. thermal conductivity of loose-fill, high temperature,

radial-flow apparatus for determining, J 67C2-

126, 129 (1963).

Insulators, powder, 5059.

Intake, radionuclide, weighted, mathematical program- ming models, selections of diets to minimize,

5461. Integer order, Bessel functions of, AMS55.

Integral, a generalized elliptic, a note on, J 68B1-108,

1 (1964).

equation, chain, pair correlation function of a

fluid, numerical solutions of the convolution- hypernetted, I. The Lennard-Jones (12.6)

potential, 5524. equation, chain, pair correlation function of a

fluid, numerical solutions of the convolutions- hypernetted, II. The hard sphere potential, 5523. form, surface, three-body collision in the Boltz- mann equation, 6413. formulas, gaussian wave functions for polyatomic

molecules, J 68B1-114, 35 (1964). Fourier, in physical science, 1267A.

fractional multiples, obtaining, of a given radiance,

5652.

fractional multiples of a given radiance, a scheme

for obtaining, 5163. generalized elliptic-type evaluation, J 67B1-88, 1 (1963).

identities, higher order, application to bounding

techniques, J 65B4-65, 261 (1961).

matrices, computational problems involving, J 65B1-43, 15 (1961). modified Fresnel, computation, TN224.

path, for low and very low frequencies, numerical

values, TN319.

Sievert, ferroelectric switching, 5354.

Integrals, Bessel functions, AMS55.

convolution, occurring in the theory of mixed path

propagation, evaluation, TN132 (PB 161633).

elliptic, AMS55.

Integrated starlight over the sky, TN106 (PB161607) ; 3582A; 4126. Integration, carried out, mechanically, syntactic, 5721. numerical interpolation, and differentiation, AMS55. theory on measurable sets and functions, J 69B1&2-

140, 99 (1965). Intense resonance line sources for photochemical work

in the vacuum ultraviolet region, 6141.

Intensities, and line positions, TN332.

observed plasma, radial distribution, data process- ing system for the automatic transformation,

5982.

spectral-line, tables, Mono.32, Pt. I and Pt. II. Intensity, carbon-arc, on asphalt oxidation, 6440. carbon arc and asphalt oxidation, relationship be- tween, 6474.

effect of geomagnetic crochet on cosmic-ray, 5746.

extraterrestrial, determination, cosmic radio noise

at high frequencies, dual-polarized broad beam

antennas, 5808. forbidden X

L'II 3 /2 XTI1/2 satellite bands in the infra- red spectrum of nitric oxide, 6143. quadrupole fundamental of molecular hydrogen ro- tation-vibration interaction correction, 6144.

spectral, distribution of scattered radiation from

Co60 sources, 5764; 9082. standards for high-energy, comparative measurements, 3906. [OI] 5577 in the subauroral region as a function

of magnetic activity, 3840.

Interaction, antenna with a hot plasma and the theory

of resonance probes. J 68D11-417, 1171 (1964). aromatic hydrocarbons with oxygen, TN274.

between an obliquely incident plane electromagnetic wave and an electron beam in the pres- ence of a static magnetic field of arbitrary

strength, J 66D4-205, 439 (1962). between configurations with several open shells, 6805. between plasmas and electromagnetic fields, J 64D6-

96, 766 (1960). carbon dioxide with carbon adsorbents below 400 deg Centigrade, 6145. configuration, H;) and H2 , 6653.

correction, molecular hydrogen rotation-vibration,

intensity of quadrupole fundamental, 6144. energies and transport coefficients, Li+H and O+H

gas mixtures at high temperatures, 5414. energy of an alkali metal with a rare gas, 4703. matrix element, in a shell model, 5415. oxygen with platinum, 6806.

potential between He and H;, 6808.

solvent, statistical computation of configuration and free volume of a polymer molecule, 5695. 350 keV polarized neutrons with oriented Ho106 nuclei, 6453; 6807.

Interactions, electromagnetics, unitary symmetry in photoproduction, 5834. microwave-gas, 4680.

repulsive, low temperature, binary mixture of di- lute bose gases, 5213. S-wave hyperon-nucleon, and SU3 symmetry, 6415. SU: > symmetry, 6415. Intercomparison, high-energy x-ray intensity measurements, J 68A6-319, 703 (1964). 583
international, standards and microwave power

measurements, 6150. microwave power meters, transfer instrument, 3410. national roentgen and gamma-ray exposure-dose

standards, 5416. Intercomparisons, laboratory test results, 4704. standard thermal-neutron flux density of NBS,

5417.

Interest, ionosphere, laboratory studies of helium ion

loss processes, 6173.

light element program, combustion and reaction calorimetry of several compounds, 6640. Interface, absorbing, density distribution of polymer

segments, 6678. automatic graphics, computer, MAGIC-A machine, 6840. between two media, numerical investigation of the equivalent impedance of a parallel wire grid, J 66D1-169, 7 (1962). separating two dielectrics, a simplified theory of

diffraction, J 68D3-346, 303 (1964).

Interfaces, air-liquid, monolayers of adipate polyesters, J 66A5-178, 439 (1962).

Interfacial properties of polyesters at glass and water

surfaces, 3233. Interfarometric instrument for the rapid measurement

of small diameters, 3972. Interference, aspect, high field strengths, implication

for lasers, 5912.

fringes, long path difference using He-Ne laser, 5418. fringes with mercury-198 and a path difference of 2000 mm, 3583. mutual, between surface and satellite communication systems, J 65D5-148, 433 (1961). patterns in reverberent sound fields, 6809. predictions for the instrument landing systems, TN324.

rejection capability of a switched radiometer, J

69D11-575, 1425 (1965). X-ray, J 67A2-201, 149 (1963). Interferometer, acoustical, employed as an instrument

for measuring low absolute temperatures, 4472. alinement, J 67C4-141, 307 (1963) ; 5187.

dental, simple device for adjusting, 6560.

electron, studies of iron whiskers, 4061. high resolution millimeter wave Fabry-Perot, 3568.

in-line, 1040A.

(multi-slit, high-intensity Raleigh) to sedimentation studies, 6604. normal incidence, TN263.

observations of satellites for measurement of ir- regular ionospheric refraction, 4382.

optical, electronic fringe interpolator, 1011B.

oscillating Fabry-Perot, fringe pattern, J 68C2-152,

73 (1964).

reversing, wavefront, 3881. spectrographic, J 68D7-377, 807 (1964).

test of the 26-inch refractor at Leander McCormick Observatory, 6146. testing extended surfaces such as surface plates and precision ways, J 68C2-153, 83 (1964). use in the calibration of line scales, an automatic

fringe counting, J 65C2-64, 129 (1961). wave front reversing, testing of lenses, J 70C2-220,

65 (1966). wave-front-shearing, J 65B4-62, 239 (1961). wave front shearing prism, J 68C3-160, 155 (1964). wave front shearing, some applications, J 69C4-204,

245 (1965). Interferometers, diffraction grating, 4813. Fabry-Perot, experimental investigation, 5348. large aperture, with small beam dividers, J 67C3-

130, 201 (1963).

Interferometric, measurement of vibration amplitudes,

6229.

method, new, hyperfine structure and isotope shifts

in the 2537-A line of mercury, 5394.

oil manometer of vacuum measurements, 4569. study of Jupiter at 10 and 21 cm, J 69D12-588,

1552 (1965). Interferometry, precision millimeter wave, at NBS,

3719A.

Interlaboratory, evaluation of a method for indicating brightness of papers containing fluorescent brighteners, 4705. evaluation of procedures for tongue-tearing strength

of woven fabrics, 6147. evaluation of testing methods, 3336.

noise standard, waveguide noise-tube mount, 5897;

6530.

test results, graphical diagnosis, 3223. Intermediary equatorial orbits of an artificial satellite, J 66B1-68, 5 (1962). Intermediate, phases in superconducting niobium-tin

alloys, J 66A4-171, 351 (1962).

size automatically controlled hydrogen refrigeration system, 3425A.

state of some hard superconductors, 5011.

state structure and surface energy of mercury,

3841. Intermediates in the photolysis of HNCO and DNCO,

low temperature infrared study, 6184. Intermittent-action camera with absolute time calibration, 3133. Intermolecular, empirical, potential for inert gas atoms,

3529. forces from optical spectra of impurities in molecular crystals, 3584. interactions on thermodynamic properties of gases

at high temperatures and pressures, 3512.

potential functions from macroscopic measurements, determination, J 70A3-402, 259 (1966). rearrangements, 4131; 4132; 4133; 4134. Internal energy, entropy and enthalpy for real fluids using equations of state and specific heats,

6093.

field at the ra Co nucleus in a 99.5% Ni-0.5% C

alloy, pressure dependence, 8957.

friction caused by jumping of point defects in crystals, 4964.

friction in rutile containing point defects, 6148.

friction in Zr02 containing CaO, J 69A5-367, 457

(1965). magnetic fields in nickel-rich nickel cobalt alloys, 4706. resistance of dry cells, new pulse method, 3274. rotation in methylsilylacetylene, microwave spec- trum and barrier, 6869. rotation of ethyl cyanide, microwave .spectrum,

3258. rotation of l-chloro-2-butyne, microwave spectrum,

3257. tearing resistance of paper, 4494. tearing resistance of paper, TAPPI standard, 5202;

5923. International, and national organization engaged in the standardization of dental materials and therapeutic agents, work, composition and interrelation, 6647. Commission on Radiological Units and Measure- ments (ICRU) 1959, report, H78.

conference, third, precision electromagnetic measurements, 5085. coordination of measurement, 4127. International comparison, atomic frequency standards

via VLF radio signals, J 69D7-524, 905 (1965) ; 6810. current-ratio standards at audio frequencies, 6594.

dielectric measurements, 6149. inductive voltage divider calibrations at 400 and

1000 Hertz, 6595. 584
radioactivity standards, 3584A.

voltage transformer calibrations to 350 KV, 5913. International geophysical calendar, 4128; 4688; 4707;

5222; 5420; 5422; 6151. International, geophysical year, equatorial region iono- spheric scatter research by NBS, 2547A.

evaluation of the special world interval program,

4075.

flares, corrections to NBS list, 5263.

flares with normalized values of importance and

area, 4784. intercomparison of standards and microwave

power measurements, 6150. intercomparisons of radioactivity standards, with

special reference to such measurements of NBS standards, 3853. ionospheric VHF scattering near the magnetic

equator, J 67D5-280, 459 (1963). observations of Es and F-region scatter, 3704. occurrence of sporadic E, 5030. polar blackout, 4845.

practical temperature scale of 1948, J 65A3-96, 139

(1961); 4987; 9094.

practical temperature scale of 1948: text revision

of 1960, Mono.37.

practical temperature scales in the region of 90 °K, application of precise heat-capacity data to the

analysis of the temperature intervals of the NBS-1955 temperature scales, J 69A1-321, 5 (1965). preliminary assessment, 2697A.

proposals for testing plastics, 744A.

standardization—a new responsibility of the engineer, 5421. standardization, U.S. participation, 5835. standards for plastics, 3586. standard of light, 3585; 4897. standards, progress, 2264A. symposium, introduction, equatorial aeronomy,

5426. symposium on the solar spectrum, 6152. system of units, 9083. temperature scale of 1938, text revision, 5057. types of E s , 4433. union, role of, pure and applied chemistry, 5792. weights and measures, 6811. world magnetic survey, 4356. Internationale, colloquium, Xth, spectroscopicum, proceedings, 5596. Interplanetary, and geophysical, astronomical, light of the night sky, 6457.

fields, solar particles, 5661.

gas. I. Hydrogen radiation in the night sky, 3234. magnetic field, 4862.

space, solar particles, 4913. Interpolating functions, best approximations, 3986. theorem concerning existence, 8907.

Interpolation, formula for platinum resistance ther- mometers, 4545. H^normal functions, Montel property, 5512. numerical, differentiation, and integration, AMS55.

platinum resistance thermometers, 3587. platinum resistance thermometers, 10° to 273.15°K,

4708. procedure for calculating atmospheric band absorptions from laboratory data, TN178.

theory to linear array synthesis, application of Bernstein polynomials, 5924. Interpretation, angular dependence of backscattering from the Moon and Venus, J 69D12-621, 1669

(1965). appearance potentials of secondary ions, 4129. Ar+ -Ar collisions at 50 keV, 6812. computer, English text and picture patterns, 5965.

early magnetic transients caused by high-altitude nuclear detonations, J 69D8-549, 1179 (1965). frequency shifts due to electron exchange collisions, 6008; 6153. intensity distributions in the N2 Lyman-Birge-Hopfield and CO fourth positive systems, 3588. maxima in the absorption of soft X-ray, 6154. pH measurements in alcohol-water solvents, 4709;

5423. potentiometric titrations of weak acids in methanol- water solvents, 6155. Interpretation, probabilistic, M269, p. 9. prominence spectra, 5535. prominence spectra. IV. The Balmer and Paschen

continua in a quiet prominence, 4204. prominence spectra. V. The emission lines in quiescent prominences, 4805. rapid changes in the phase of horizontally polarized VLF waves recorded at night over a short path in the southwestern United States, J

68D3-341, 265 (1964). rate experiments with resolved quantum levels, 4710.

solution absorption spectra of the (PuO) ++ and (Np02 ) + ions, J 70A2-392, 165 (1966). some features of low-frequency ionograms, 3235. synthesis of certain spread-F configurations ap- pearing on equatorial ionograms, 4357.

theory, of high resolution infrared spectra, the molecular vib-rotors, 5493. word associations, M269, p. 25. Interpretations, statistical, 5696. Interpreting preliminary measurements, 4130.

Interrelation, work and composition of international and national organization engaged in the standardization of dental materials and therapeutic agents, 6647.

Interrelations, between cement and concrete properties, BSS2, Part 1. between cement and concrete properties. Sulfate expansion, heat of hydration, and autoclave

expansion, BSS5, Part 2. sporadic E and ionospheric currents, 4710A.

Interstellar grains, possible mechanism for light absorption, 6556.

Interval, (-00,00), quadrature formulas, 5881.

Intervals, confidence, for a proportion, 3165.

flare and associated sudden commencement-storm

on pre-storm conditions, 4567. Intra-atomic correlation correction studies, 3773A.

Intramolecular, rearrangements in the solid phase

photolysis of 4-methyl-2-hexanone and sec- butyl acetate, 4711. rearrangements. I. Sec-butyl acetate and sec- butyl formate, 4131. rearrangements. II. Photolysis and radiolysis of 4-methyl-2-hexanone, 4132. rearrangements. III. Formation of 1-methylcyclobutanol in the photolysis of 2-pentanone,

4133. rearrangements. IV. Photolysis of 2-pentanone-4,

5,5-d3 , 4134. rearrangements. V. formation of ethylene in the

photolysis of ethyl acetate from 4 to 500 °K,

5424. transition in poly-L-proline, 6054. Intrapolynomials with some prescribed coefficients, zeros, 4384.

Intrinsic attenuation, 5425. Introducing, additional error, measuring impedance,

6858. non-thermal unsaturation, simple method for; action of zinc dust and sodium iodide in N, Ndimenthylformamide on contiguous, secondary

sulfonyloxy groups, 6580A.

535
Introduction, and summary, symposium, effects on

water-reducing admixtures and set-retarding admixtures on properties of concrete, 3589. flame photometry and review of recent studies, 4486. international symposium, on equatorial aeronomy,

5426. sampled data and switching logic, TN334.

theory of VLF propagation, 4713.

Invalidity, Meixner's theorem in irreversible thermodynamics, J 66B3-79, .101 (1962). Invariance of symmetric functions of singular values,

5012. Invariant, and complete stress functions for general

continua, 3237. properties of the spheroidal potential of an oblate

planet, J 70B1-165, 1 (1966). relaxation processes, canonically, nonequilibrium thermodynamics, 6224. Inventory, computer control of precision instrument,

6649. management, military, safety levels, 4904.

theory, optimal character of the (s, S) policy, 787A.

Inverse Z-transform theory to the synthesis of linear antenna arrays, 5909. Inversion, Abel, computer, 5132. matrices by random walks, 370A.

radio wave absorption data to establish ionospheric

properties. I. Nondeviative absorption, J 67D6-299, 699 (1963). temperature, a question regarding atmospheres,

5158. Inverted L-, T-, and related transmission-line antennas, experimental study, J 65D5-150, 449 (1961). Investigating electrochemical phenomena, an electrode, galvanostalametry, new technique based on the negative pressure of liquids, 5370.

Investigation, anomaly in the response of silicon semi- conductor radiation detectors at low temperatures, 6813. bond in beam and pullout specimens with highyield-strength deformed bars, 4137.

clear air stratification with radar and elevated instruments, J 69D6-520, 877 (1965).

concentric ring antennas with low sidelobes, 6596. constitution of the mercury-tin system, J 67A1-195,

55 (1963). disturbed and undisturbed soils, results of NBS

corrosion, 8999.

effects of the nickel dip on the adherence of ground

coat enamels to steel, 951A.

elimination of systematic errors in measures of

solar flares, 4714. experimental, Fabry-Perot interferometers, 5348. experimental, liquid hydrogen cooling by helium

gas injection, 5349. gases evolved during firing of vitreous coating on

steel, 745A.

high-latitude, natural very-low-frequency electro- magnetic radiation, 5135. hydraulics of horizontal drains in plumbing sys- tems, Mono.86. mass spectrometric, high temperature reaction be- tween nickel and chlorine, 6189. mass spectrometric, nickel-bromine surface reaction, 6190. mass spectrometric, yttrium-chlorine surface re- action, 6191. plasma boundaries with electromagnetic surface waves, 6158. psychrometric measurement techniques in air conditioning calorimetry, 6597. sandwich construction under lateral and axial loads, 745B.

shallow reference cavities for high-temperature

emittance measurements, 5427. spectrophotometric method of measuring the Ferric

ion yield in the ferrous sulfate dosimeter, 4715. surfaces of the Moon and Planets by the thermal

radiation, J 69D12-603, 1585 (1965).

Investigations, creep behavior of structural joints under

cyclic loads and temperatures, 3238. multivariable, 3657.

optical, film formation and removal on gold anodes

in acidic oxalate solutions, 6272.

spectroscopic, of fluorescence and chemiluminescence in gases, 6386. tropospheric propagation, experimental results, J

64D6-96, 615 (1960).

Invisible colleges, 6310.

Iodide, cells, hydrogen-silver, thermodynamics of aqueous solutions of hydriodic acid from elec- tromotive force measurements, 6504.

films, lead, RH at room temperature, study of the

variation of the surface electrical resistance, 6567.

kinetics and mechanism of the low-cubic to hexagonal phase transformation of silver, 6169. methyl, gas-phase photolysis. Reactions of hot methyl radicals with added organic compounds,

6099. photolyzed silver, ice nucleation, 6123. polymorphism in hydrogen, 8946. polymorphism of silver, 5576; 5578.

silver, hexagonal silver iodine, 5802.

silver, pressure-induced trapping phenomenon,

6312.

silver, thermal expansion, 5821.

silver, x-ray determination of the Debye temperature, 5914. sodium, and zinc dust in N, N-dimenthylformamide

on contiguous, secondary sulfonyloxy groups,

action; simple method for introducing non- thermal unsaturation, 6580A. sodium crystals, large anticoincidence, high-energy X-ray spectrometer, 3566A. sodium iodide and silver iodide-potassium iodide, systems silver, J 64A5-64, 403 (1960). tetratethylammonium, aqueous solution at 25 deg, osmotic and activity coefficients, 5551. theoretical electromotive forces for cells containing

a single solid or molten fluoride, bromide, 9110.

Iodine, atomic, electron affinity, 4624. oxidation of D-glucose, 4572.

(I II), spectrum of singly ionized atomic, J 64A6-

68, 443 (1960).

Iodine-125, M260-9.

Iodopentaborane, molecular symmetry, 6462. Iodopentaborane-9, crystal and molecular structure, 9064.

Ion, atom collisions, lectures, TN185. atom collisions, Lyman alpha radiation, 4861.

azide, nitrogen NMR chemical shifts, 5506. cyanate, various alkali halide lattices, vibrational spectrum, 3368. decomposition in a linear, pulsed time-of-flight mass

spectrometer, observation of the products of

ionic collision processes, 8905. desorption, kinetics of positive, polycrystalline tungsten and rhenium, 5767. drag, effect, neutral air in the ionospheric F-region,

9075. emission and field electron, Soviet research, 1955- 1956; annotated bibliography, TN75 (PB161-

576).

ferric, yield in the ferrous sulfate dosimeter, 4715. helium, loss processes of interest in the ionosphere, laboratory studies, 6173. hydrogen, concentration, 247A. 586
hydrogen negative, 4984. hydrogen negative, ionization, 3592. microscope, field, observation: condensation of tungsten on tungsten in atomic detail, 6651. modes of decomposition of the neutral excited cyclohexane molecule and reactions of the cyclohexane, 9080. molecule reactions, bibliography, January 1900 to March 1966, TN291.

molecule reactions of atmospheric importance, in- cluding 0

+ +Nl>NO+ +N, measured rates for oxygen and nitrogen, 9020. moving, dielectric friction, 5292. neutral reactions, positive, ionosphere, 8947. pair-quadrupole equilibrium. Tetrabutylammonium

bromide in methanol-benzene mixtures, 3842. parent, and neutral excited pentane molecule, study

of decompositions. Gas-phase radiolysis of n-pentane, 6100. parent cyclohexane, modes of decomposition of the neutral excited cyclohexane molecular and re- actions: gas-phase photolysis of cyclohexane

in the far ultraviolet, 6770. processes relevant to aeronomy, review of photo- detachment and related negative, 5885.

related thermodynamic quantities from 0 to 50°, dissociation constant of pyrrolidinium, 5299.

size on membrane potentials, 6021. t-butylammonium and related thermodynamic quantities from 5 to 35°, 4600. 10 to 40°, dissociation constants of acetic acid and

dihydrogen phosphate, 8987. tetrachlorocuprate, electron paramagnetic reso- nance and the primarily 3d wavefunctions,

6731. tetrachlorocuprate; electron paramagnetic reso- nance of tetrahedrally coordinated copper"*, 6029. transport across membranes: I. Definitions of membrane electromotive forces and of flows of elec- trolytic solutes, J 66A1-144, 97 (1962).

Ion, negative atomic carbon, 4947. atomic oxygen, photodetachment cross section, 3710.

electron densities in the lowest ionosphere, height

distribution of ratio, 6253. hydrogen, electron impact, 3522. negative, studies, optical methods, 3698.

Ionic, charges of glass surfaces and other materials and their possible role in the coagulation of

blood, 3590.

collision processes and ion decomposition in a

linear, pulsed time-of-flight mass spectrometer,

8905.

constituents, automatic chloride titrator in the

analysis, 4346.

crystals, 4720.

crystals, drift mobility and diffusion for impurities,

6709. impurity in an electric field, 4609.

interactions with sugar colorant during char filtra- tion, 4716.

magnetic-field, alouette, and plasma studies, 5908. reaction mechanism in the radiolysis of methane,

effect of additives, 5307; 6005.

solids, impurity controlled properties, 5402; 6792.

Ionization, active nitrogen, measurements, 4607.

alkali halide, determination of work function from

the ratio of positive to negative surface, 9069. alpha, search for a slow component, 5655. atomic hydrogen, electron impact, 5328. atomic systems by fast protons, TN185.

calibrated chamber, determination of total X-ray beam energy, Mono.48. chamber for determination of X-ray total beam

energy, calorimetric calibration, J 66A5-172,

371 (1962).

C, NO, and 02 , Franck-Condon factors, 6088. continuum by electron impact, excitation of opti- cally forbidden states, 6748. E-layer, dependence of critical frequency of the ionospheric E-layer on the solar zenith angle and the annual variation, 6680. energies of the singly ionized rare earths, 6814. energy, photolysis of cyclobutane at photon energies, 8940. equatorial ionosphere, features of ES, J 68D11-427,

1237 (1964).

field-aligned, above the magnetic equator and their resemblance to auroral echoes, radio echoes,

3736.

field-aligned, irregularities between 400 and 1,000 km above the earth's surface, 4640. front in cylindrical shock waves from exploding

wires, 4767.

H-, dissociative, study of angular and energy dis- tributions of resultant fast protons, 5300. H2 , HD, and D2 , Franck-Condon factors, J 68A6-

311, 631 (1964). high temperature gases, 5428. hydrogen negative ion, 3592.

irregularities, field-aligned, evidence for, between

400 and 1000 km above the earth's surface,

5342.

limit in inelastic electron scattering in rare gases,

5707.

liquids by radiation, 251A. meteor show, VLF phase perturbations, 4408. negative surface, complex molecules, 6882. niobium, surface, 9054; 9096. plasma of a copper arc, J 66A2-148, 169 (1962).

potential of fluorine, 3593. produced in air by alpha particles near 5 Mev and

by beta particles, 4008.

regulation, gauge emission current to better than

0.05%, 5633.

static interplanetary gas and expected emission

lines from gas, 3591. surface, niobium, 9054. Ionization chambers, free-air, soft X-ray region (20- 100 kv), 3176.

free-air, United States and Canadian, 4538. theory of cavity, 6893. Ionization constant, dimethylpicric acid (2,4,6-trinitro- 3,5-xylenol) , spectrophotometric determination

in water at 25°C, J 64A6-77, 531 (1960). hydroxylamine, 4358. m-nitrophenol from 5 to 50°, 5765. p-nitrophenol from 0 to 60°, 5013.

2,4,6-trinitro-m-cresol in water at 25°C, spectro- photometric determination, J 64A6-78, 533

(1960).

Ionization constants, four dinitrophenols in water at 25 °C, J 64A4-57, 347 (1960). methanol-water solvents, J 68A3-277, 305 (1964). o-nitrophenol and 4-nitro-m-cresol from 5 to 60°, 5766.

reactivity of isomers of eugenol, J 68A6-309, 619

(1964).

six dichloroanilines and the six dichlorophenols in aqueous solution at 25 °C, J 68A2-264, 159

(1964). 2-chloro-4-nitrophenol and 2-nitro-4-chlorophenol,

3843.

Ionized, air, 4626.

air, highly, thermodynamic properties, 2394A.

cerium, 4fn configurations of doubly, 6762. doubly configurations 4f6s and 4f6p, 5969.

gas, 5172. 587
gaseous layers, reflection of electromagnetic waves,

J 66D1-175, 73 (1962).

gases, quantum statistics, 8966.

gases, slightly, cyclotron resonances, 5274. helium, departure from the Saha equation for.

I. Condition of detailed balance in the reso- nance lines, 4027 and II. Atmospheric thick- nesses too small to satisfy detailed balance in the resonance lines, 4028. lanthanum (La in), spectrum, 9031. molecular nitrogen emission and the oxygen green

line in the dark atmosphere, 3126. plasma sheath, radiation and admittance of an

insulated slotted-sphere antenna surrounded,

J 64D5-91, 525 (1960). praseodymium, nuclear magnetic moment of Pr111 from the hyperfine structure, 6894; 6895. praseodymium, triply, analysis of the spectrum,

6600.

radiation, 5615. rare earths, singly, ionization energies, 6814. singly and neutral, phosphorus, atomic energy

levels and spectra, 3144.

singly, atomic bromine (Br Ii), energy levels and

magnetic dipole transitions in the 4p' ground

configuration, 4067. Ionizing radiation, and constitution of the atmosphere,

J 68D5-362, 569 (1964) ; 6159. measurement, low atomic number dye systems, 6837. measurement, low-Z dye systems, 6839. Ionogram analysis, use of logarithmic frequency spacing, J 64D5-87, 501 (1960). Ionograms, atlas of oblique-incidence, J 65D1-100, 35

(1961).

effects of magnetic disturbance as noted on oblique

incidence, 5314.

electron density profile analysis of topside sounder,

6025. equatorial, 4357.

equatorial, waveguide interpretation of "temperatelatitude spread F", 3955. low frequency, interpretation of some features, 3235.

oblique, in frequency utilization, 6490. Etheridge coefficients for polynomial method of deducing electron density profiles, J 67D1-245,

79 (1963).

topside, method for obtaining the parameters of electron-density profiles, TN315.

Ionosonde, low-height, echoes to auroral-zone absorption and VHF forward scatter, 4374. observations of artificially produced electron clouds:

Firefly 1960, TN135 (PB161636).

studies of some chemical releases in the ionosphere,

J 68D2-332, 189 (1964); 6160. Ionosondes, angular dependence of the refractive index, J 69D3-476, 395 (1965).

anisotropic curved, concerning solutions of the VLF

mode problem, J 67D3-264, 297 (1963).

antarctic, characteristic variations, 6627. antarctica, 5014.

artificial heating of the electron in F-region, 5204. atmosphere in the E and Fl regions, 4426; 5144. attentuation of hydromagnetic waves, J 69D3-471,

361 (1965).

calculation of electron energy distribution functions, 6430. chemical release, formation of an electron de- pleted region, 6078. compressible, VLF propagation, J 68D7-376, 795

(1964). compressible, wave propagation. Part I, J 68D12-

433, 1285 (1964); Part II, J 68D12-434, 1297

(1964).

concentric anisotropic and a spherical earth, com- ment on the mode theory of VLF radio propagation, 5242. content at middle latitudes near the peak of the

solar cycle, total electron content, 5806. continuity equation for electron density, 8912. D region, very-low-frequency phase observations, studying the lunar tidal variations, 5713. D-region, VLF phase observations of solar flare ionization, 5849.

distribution of electrons, 9071. disturbances, sudden, listing, 6460. Doppler studies, with vertical incidence, 4550; 4604.

earth, cavity, theory of Schumann resonances, 6261. earth, resonance of the space, J 65D5-152, 465

(1961).

electric fields, excitation of the red lines of atomic

oxygen, 5317.

electron distribution, 6026. equatorial, some features of EVionization, J 68D11-

427, 1237 (1964). explorer I satellite: first observations from the

fixed frequency topside sounder satellite, 6161. exosphere, incoherent scattering by free electrons as a technique for studying: some observations and theoretical considerations, J 65D1-97, 1 (1961) ; 3231A. F region, 4235; 4912. F region, solar flare effects, 4292. Far East, peculiarities, 3704; 3705. formation of an electron depleted region, chemical

releases, 6079. ground, LV/VLF propagation between, concerning

limitations and further corrections to geometric-optical theory, J 68D1-318, 67 (1964). guided propagation of ELF and VLF radio waves,

6449. spaced, the lifetime and movement of artificially produced electron clouds, 5769. Ionosphere, hmaxF2, comments on models, 3476. height on VLF propagation, 4081.

height, variable, an analysis of VLF propagation, J 66D4-207, 453 (1962).

high-latitude, radio studies of, during the solar

eclipse of 20 July 1963, J 69D2-463, 267 (1965). homogeneous anisotropic, impedance of a cylindrical dipole having a sinusoidal current distri- bution, J 68D4-355, 379 (1964). hydromagnetic waves of ELF oscillations, J 64D6-

96, 650 (1960). inhomogeneous anisotropic, ELF and VLF waves

below, J 68D6-367, 693 (1964). inhomogeneous anisotropic, propagation of ELF

waves below, J 68D1-322, 103 (1964). inhomogeneous, reflection of VLF radio waves. Part II. Perturbed exponential model, J 67D5-

283, 519 (1963). inhomogeneous, reflection of VLF radio waves. Part III. Exponential model with hyperbolic

transition, J 67D6-303, 747 (1963). ionosonde studies of some chemical released, 6160. ionospheric absorption in conjugate regions and

possible oscillation, 6162.

irregularities, two-stream plasma instability as a

source, 5833. laboratory studies of helium ion loss, 6173.

local electron density, possible effect of lower atmosphere divergence, 3389. lower, and Fresnel zones for elevated antennas

over a spherical earth, radiation patterns, Mono.38.

lower, radio pulse propagation by a reflection process, J 67D5-281, 481 (1963).

lower, with ground-based transmitters, alteration of the electron density, J 69D1-445, 83 (1965). 588
magneto-ionic propagation phenomena in low- and

very-low-radiofrequency waves reflected, J

65D1-103, 53 (1961). Martian, a theoretical study, 5170. midlatitude, measurements of the total electron content and the equivalent slab thickness, J 69D7-526, 929 (1965). model for the lower, experimental observations and

theoretical calculations, 5350. monthly electron density profiles, 3409. new guide, how to listen to the world, 9084. nonhomogeneous, propagation of ELF radio waves,

3690. nonlinear phenomena, J 69D1-439, 9 (1965). non-linear processes, TN211, Vol. 1-6. not sharply bounded, propagation of VLF and ELF radio waves, J 66D1-173, 53 (1962).

oblique incidence, an experimental study of gyro

interaction, J 69D1-440, 25 (1965).

oscillatory currents, 3276A. phase velocities and attenuation distances, J 69D6-

514, 819 (1965). physical processes in the D-region, 6289. plasma instability resulting in field-aligned irregularities, 5156. plasma resonances, 5569. polarization fading of satellite signals to study the

electron content and irregularities, J 64D4-66, 335 (1960); 3878.

positive ion-neutral reactions, 8947. propagation, 4245.

quiet, mean electron density variations, TN40-3 to 40-7 (PB151399-3 to PB151399-7) and TN40-8

to 40-12.

quiet, mean electron density variations. Summary

of one year of data May 1959-April 1960, TN40-13 (PB151399-13).

quiet, temperature control of the structure and

variations, 5725. radio and airglow observations during IGY, 3289. radio and IQSY, 6330. radio propagation in the lower frequencies, 6454. radiowave scattering, 5627.

reflection coefficients, low- and very-low-radiofre- quency, TN69 (PB161570).

research, digital ray-tracing program, 3926. resonance effects of electrostatic oscillations, 6346.

75° west geographic meridian, vertical cross sections, 3267A.

solar flare effects in the F region, 4332. some chemical releases, ionosonde studies, J 68D2-

332, 189 (1964). South Geographic Pole, observations, 3268.

stratified, phase integral method to determine the

reflection properties, J 69D4-487, 511 (1965).

studies, global, topside sounding as a tool, 5826A.

sunset and sunrise, effects on the propagation of longwaves, J 67D2-249, 119 (1963).

vertical cross sections, across the geomagnetic

equator, TN138, (PB161639).

Ionosphere topside, constitution, 6250.

first pulsed radio soundings, 4089. presence of spread F, 4867. rocket experiment involving radio reflections, 5162. sounding, 5090. Ionosphere, very low frequency, measurements for obtaining information, 8921A.

propagation, lowest mode of horizontal polarization, J 68D1-323, 105 (1964).

radio propagation, J 66D6-226, 663 (1962). radio waves, 5852. Ionospheres, spherically stratified, analytical formulas

for radio paths, J 69D3-483, 453 (1965).

theoretical study of the Martian and Cytherian,

5893.

Ionospheric, absorption at times of auroral and magnetic pulsations, 4138. absorption events at conjugate stations, fluctuations, 6075. absorption in conjugate regions and possible oscil- lation of the ionosphere, 6162. blackout occurrence, worldwide patterns, 4413. C region, collisional detachment and formation, J 67D5-284, 525 (1963). CRPL, predictions based on numerical methods of mapping, H90.

changes, delayed, during twilight: conjugate ob- servations of solar proton events, 6655. characteristics at CRPL for skywave radio propagation at high frequencies, 6306.

characteristics, methods for applying numerical maps, J 66D6-225, 649 (1962).

conditions on the accuracy of high frequency

direction finding, influence, J 65D3-122, 225

(1961).

cross modulation: a microscopic theory, J 69D1-

442, 59 (1965).

cross modulation, theory of, a discussion, J 68D10-

410, 1109 (1964).

currents, interrelations of sporadic E, 4710A.

D-region, electron collision frequency, J 68D10-411, 1123 (1964). data by numerical methods, 5040. data by numerical methods, representation of diurnal and geographic variations, J 66D4-

205, 419 (1962) ; 8993. depression, circular, influence of, VLF propagation, J 68D8-389, 907 (1964).

depression, localized, VLF, TN208.

depression of finite extent, phase changes in very- low-frequency propagation induced, 6247.

direction finding and related, propagation topics, 1955-1961, bibliography, TN127.

disturbance, 4273; 5803. disturbance, relation of solar active regions at

central meridian passage, 5635. disturbances and geomagnetic activity, auroral- zone observations of infrasonic pressure waves, 5209. disturbances with a high frequency Doppler tech- nique, TN306..

disturbances, WWV reception in the arctic, J

67D2-253, 179, (1963).

drifts from occurrence of spread F echoes at low

magnetic latitudes, 3688.

drifts measured by the radio star scintillation tech- nique, statistical study, 3947.

drifts, measurement of by means of a Doppler

technique, 5019. E-layer on solar zenith angle and the annual vari- ation in E-layer ionization, dependence of

critical frequency, 6680. electrodynamics and atmospheric tides, 3442.

electron content and ionospheric radio-wave propagation, use of geo-stationary satellites, 3877.

electron densities, RF impedance probe measurements, J 66D6-224, 641 (1962).

equatorial region, scatter research by NBS during IGY, 2111A. F2 layer, a time-varying model, 5894. "forward" scattering, 4139. F-region, effect of ion-drag on the neutral air, 9075. F-region on the solar cycle, 4568. geomagnetic phenomena associated with nuclear

explosions, 3219. heights along a great circle path, calculation of

sunrise and sunset times, TN209.

irregularities and long-distance radio propagation, J 66D3-194, 265 (1962). 589
irregularities, diffraction patterns caused by, an

approximate method for computing, J 68D6-

371, 737 (1964).

irregularities, large-scale, synoptic variations and

vertical profiles, 5720.

large-scale, irregularities observed at Boulder,

Colorado, 4271. low frequency, phenomena in radio navigation

systems, 4802. lower atmospheric, coupling, statistical study, 3948. mapping by numerical methods, TN181; TN337;

3594. motions observed with high frequency backscatter

sounders, J 65D2-109, 115 (1961). multipath reduction factor, 4432. N(h) profiles, obtaining, and their bearing on the structure of the lower F region, 5678; 6380.

nonlinearities, some problems, J 69D1-438, 1 (1965). perturbation (the roles played by the ionosphere in geomagnetic pulsations) , J 69D8-546, 1149, (1965). plasma, experimental studies of perturbations, J

69D2-456, 219 (1965). plasma, on some nonlinear phenomena, J 69D1-441,

33 (1965).

Ionospheric, effects, associated with the solar flare of September 28, 1961, 4717. earth-space radio propagation, 5890.

electrostatic fields generated in the outer magnetosphere, J 69D6-515, 827 (1965). observed around the time of the Alaskan earth- quake of March 28, 1964, 6815.

solar flare of September 28, 1961, 5119.

solar flares, 4605.

solar flares, Doppler studies, 5303. Ionospheric, propagation at high frequencies, 6816. propagation of radio waves (1923-1960), bibliog- raphy, TN84 (PB161585).

properties, inversion of radio wave absorption data.

I. Nondeviative absorption, J 67D6-299, 699

(1963). radio absorption and electron precipitation in the auroral zones, 6733A.

radio predictions, world maps of F2 critical fre- quencies and maximum usable frequency factors, 3914. radio propagation, Mono. 80. radio propagation, URSI, report of U. S. Commission 3, J 64D6-96, 629 (1960). recombination and red auroral arcs, relationship, J

65D2-110, 129 (1961).

reflection coefficients at VLF from sferics measurements, 2172A.

refraction, irregular, measurement, satellites, 4382.

relative, opacity meter, oblique incidence receiving antenna aray, TN78 (PB161579).

research, use of topside sounders, 9104.

scatter communication, optimum antenna height, 3701.

scatter propagation experiments, relation of turbulence theory, J 64D4-62, 301 (1960).

scatter, VHF, link during multipath conditions, FM

and SSB radio-telephone tests, 3552. scattering effects in long-distance propagation, J

67D3-263, 287 (1963).

scintillation of radio waves of extraterrestrial

origin, 3595.

scintillation, radio source, location of the irregularities, 5770. sounding, a note on the application of pulse compression techniques, J 69D8-550, 1191 (1965). sounding using coded pulse signals, J 68D10-415,

1155 (1964). soundings, night, 2175A.

sporadic E, 4718; 5029; 5030. temperatures, use of the incoherent scatter tech- nique, 3900.

tilts, chart for determining effects using idealized model, J 67D6-302, 735 (1963).

topside sounder satellite, 5671. tropospheric scatter, radio transmission, 3737. 2-Mc/s, absorption measurements at high latitudes, 3405. USA, research, survey, 3804A.

variations, during geomagnetic storms, 5337; 5429.

vertical sounding for electron density profile data, TN146 (PB161647). VHF, scatter system loss measurements European-Mediterranean area, TN230. VHF scattering near the magnetic equator during

the International Geophysical Year, J 67D5-

280, 459 (1963). VLF radio propagation, justification for neglecting

the compressibility, 6822. wave interaction experiments, numerical simulation, TN325.

waves, radio-star scintillations, J 68D2-331, 179

(1964). winds: motions into night and sporadic E correlations, 6164. Ionospheric storms, J 68D5-362, 574 (1964) ; 6163. high-altitude explosions, 3270. HF communication, J 67D1-239, 23 (1963). morphology, 4783.

Ions, associated, polyelectrolytes and trapped Brownian

trajectories, 6244. atomic, negative, 3264. atoms, empirical relations for energy levels, 6736. coronal, excitation state, 4919.

crystals, theory of the electronic polarizabilities, 5814. decomposition multiply charged, into singly charged fragments, 6698.

elastic collision cross sections for O, C, CI and F,

4627. helium, mobilities and reaction rates, 6870. LF propagation, TN313.

molecular, studies of photodissociation, 6407. multiply charged, TN243.

negative, double-photon photodetachment, 5305. negative, identification of energy levels, 6787 ; 8914. negative, radiative formation and destruction, 4372.

nickel (I) and (II), 4991.

positive, in argon, mobilities, 4777. produced by alpha particles in air, 3471. rare earth, validity of crystal field theory, 5809. sec-propyl, hydride and proton transfer, 6120. secondary, appearance potentials, 4129.

self-diffusion, in polyelectrolyte solution, 4811. sodium, for use in molten salt systems, 3123. IQSY, instruction manual, world days, 5430. ionosphere and radio, 6330. photometric observations of the airglow, 5564. IR detector, cooled, in an optical system, 6605. Iridium, platinum, and rhodium, vapor pressures, J 65A4-113, 289 (1961). rhodium alloys versus iridium, reference tables for thermocouples, J 68C1-151, 41 (1964). sesquioxides in air, phase relation between, J

69A3-343, 245 (1965). 60 percent rhodium versus iridium thermocouples,

reference tables, J 66C1-81, 1 (1962). thermocouples, 4887; 4888.

Iron, alloys of nickel, nuclear resonance and the hyperfine field, 5521. compounds, TN276.

crystallographic changes with the substitution of aluminum, in dicalcium ferrite, 5271. 590
deposition, salts of fiuoro-acids, 4030.

fifty-six, 6334. garnet, gallium-substituted yttrium, nuclear magnetic resonances of otl Ga and "Ga, 6234. garnet, nuclear resonance study of gallium-substituted yttrium, 6899. group, non-linear effects in spectra, 5508. group, parameters a and f5 in the spectra, 4214.

iron alloys, properties, 4246. low pressures, room temperature oxidation, 6352. modern electroplating, 5431.

nickel alloys, commercial, thermal conductivity,

4387.

nickel cell, galvanic currents observed during out- door exposure, 5369. oxidation rate, 4619. oxide in absorption by flash heating and kinetic spectroscopy, 6238. oxide recording tape, experimental and theoretical investigation of the magnetic properties, 3539.

pipe, exterior corrosion of cast, 6066.

pitting, distilled water, influence of crystallo- graphic orientation, 3232.

single crystal surfaces in inorganic inhibitor, solutions, optical studies of the formation and

breakdown, films passive, 5548.

steel, heat treatment and properties, Mono.18.

titanium, zirconium, and aluminum, method for the separation of from one another and for their subsequent determination, J 64A6-79, 535

(1960).

visible region, optical constants, 8923. whiskers, electron interferometer studies, 4061. white cast, spectrochemical NBS standards, preparation, M260-1.

white cast, standards, methods for the chemical

analysis, M260-6.

Irradiance, spectral, new standard, 5148.

spectral, standard for extremely low values, 6564. Irradiated materials, electron spin resonance studies of free radicals, 3200A.

Irradiation, composition on the glass transition temperature of methyl methacrylate-styrene co- polymers, 6012. gamma, polytetrafluorethylene in chlorine, 5371. physical aspects, H85.

small molecules at 4°K and 77°K, 4667.

Irrational power series, 3596.

Irregular, singularity of arbitrary rank, error bounds

for asymptotic solutions of second-order dif- ferential equations, 6741. singularity of rank one, application to Whittaker

functions, asymptotic solutions of second-order

differential equations, 8910. terrain or influence on propagation, 6795; 6798.

Irregularities, equatorial electrojet, association of plane-wave electron-density, 5733.

field aligned E-region, identified with acoustic plasma waves, 5356.

field-aligned, in the ionosphere, plasma instability, 5156.

ionization, field-aligned, evidence for, between 400 and 1000 km above the earth's surface, 5342. ionosphere, two-stream plasma instability, 5833.

large-scale ionospheric, synoptic variations and

vertical profiles, 5720.

location, responsible for ionospheric scintillation of a radio source, 5770. NBS (1955) provisional temperature scale, J

69A6-374, 527 (1965).

Irreversible power and radiation resistance of antennas

in anisotropic ionized gases, J 69D10-565, 1313

(1965). processes in liquid and the density matrix: monatomic molecules, 4719.

processes in plasmas—derivation of a convergent

kinetic equation from the generalized master

equation, 6495. termination, statistics, homogeneous anionic poly- merization, 5698. thermodynamics, antireciprocity and memory in the statistical approach, 5922.

Irreversibility, ensemble method in the theory, 3531.

statistical mechanics, 4314.

Is life possible on other planets? 6165. ISCC-NBS, 22, centroid colors of maximum contrast, 9120. Island of Bali, infrasonic observations of the May 16, 1964 volcanic explosion, 6803. Isobutane, gas-phase, radiolysis, 5374. molecule, structure: change of dipole moment on

isotopic substitution, 3798.

photolysis, 5111. Isobutyl radicals, isomerization, 5534. thermal reactions, 5076. Isobutylene, microwave spectrum, 4179.

Isoelectric sequence, lithium, wave functions and oscil- lator strengths, 5856.

Isoelectronic sequences, lithium and beryllium, atomic

scattering factors for the, accurate analytic Hartree-Foch wave functions, 5207.

Isolation, fault, semi-automatic techniques, Mono.83;

6314; 8960.

identification, and estimation of gaseous pollutants

of air, 251B.

Isomeric, chlorobenzoic and toluic acids with 1,3-di- phenylguanidine in benzene, thermodynamic

constants of association, J 65A3-103, 209

(1961). dinitrophenols in benzene and water, 4536. Isomerism, syn-anti, in ketoximes, nuclear magnetic

resonance study, 3938. Isomerization, D-manno-3-heptulose by alkali, 6455. double bond, olefins by hydrogen atoms at —195°,

3334.

isobutyl radicals, 5534. Isomers, eugenol, synthesis, J 67A3-213, 253 (1963). formation of two, difluorodiazine, heats, 5382. Isomethane, vapor-phase gamma-radiolysis, 4404.

Isometric-circle interpretation of bilinear transformation and its application to VSWR minimization, J 69D9-562, 1271 (1965). ISOPAR, new and improved symbolic optimizing as- sembly routine for the IBM 650. TN76

(PB161577).

Isopiestic vapor pressure measurements, ternary sys- tem, sorbitol-sodium chloride-water at 25 deg,

5432. Isopropyl, 5078.

alcohol, polymorphism, 5577. Isopropylidene-a-D-lyxofuranose, the monoacetone-Dlyxose of Levene and Tipson, J 65A6-133, 507

(1961).

Isostructural with Ta205'2Nb2Oa , tetragonal phases of the general type 10M2 O6 '90M2 O5 , 6426.

Isotactic polypropylene, the spherulitic crystallization, from solution: evolution of monoclinic spherulites from dendritic chain-folded crystal precursors, J 70A1-385, 29 (1966). Isotherm, behavior of compressibility, 8911. Isothermal, crystallization rate-temperature curve for polypentene-1, measurement, 5465. decomposition of potassium perchlorate, mechanism, 3634. plasma across magnetic field, nonlinear ambipolar

diffusions, 6226. thickening of lamellae in bulk polyethylene at the

crystallization temperature, x-ray study, 9146. Isotherms determined by the National Bureau of Standards acoustical thermometer in the 591
liquid helium temperature range, J 69A6-375,

531 (1965).

reactive limestone aggregate, 4591 ; 4594.

Isotope, deuterium, effect in vacuum-ultraviolet absorption coefficients of water and methane, 6691. deuterium, effect on glass transformation temperatures of aqueous inorganic solutions, 5289.

dilution techniques, TN274.

exchange functions for the diatomic hydrides, deuterides, and tritides, ideal gas thermodynamic

function, Mono.20. exchange processes in solid nitrogen under elec- tron bombardment, 3598. hydrogen, distillation, pilot plant data, 3715.

kinetic effect in the reaction of methyl radicals with ethane, ethane-d8 , and ethane 1, 1, l-d3 , 3599.

shifts and hyperfine structure, 2537-A line of mercury by a new interferometric method, 5394. Istope effect, electric field and jump frequencies for dif- fusion in ionic crystals, 4720. fracional recrystalization of alpha-n-glucose-l-t, 3956. hydrogen atom-formaldehyde reaction, 3597.

recrystallization of D-mannose-l-t phenylhydrazone, 4721. Iotope effects, 5106. determination of, J 67A6-241, 569 (1963). "double labeling" oxidation of D-glucose with iodine, 4572. energy exchange and particle exchange, classical model, 5865. oxidation of aldoses-Z-£ with bromine, tritiumlabeled compounds, J 68A2-262, 145 (1964). oxidation of D-mannitols-C" and D-mannitols-t to D-fructoses, tritium labeled compounds VII, J 65A5-125, 441 (1961). quantum statistical mechanics, 4251.

Isotopes, atomic weight of copper, natural variation of copper, 6880. hydrogen, study of embrittlement of high strength

steels, I. Testing of steel rings as specimens, a comparison of hydrogen and deuterium embrittlement, and permeation studies. II. A comparison of gas contents and hydrogen or deu- terium embrittlement resulting from electro- plating processes, 5166. lead and bismuth, photodisintegration, 5031. neon, in the temperature range 4°-24°K, 4753;

5468. uranium, and daughter products in weathered

granite and uranium-bearing sandstone, 6084.

Isotopic, absolute, abundance ratio and atomic weight

of silver, 3412. abundance ratio and atomic weight of chlorine, 446.

defects, harmonic crystals containing, momentum

autocorrelation functions and energy transport, 5494. determination of the vibrational numbering for the BB3 7r„-)-u, 6817.

effects in the t>3 fundamental matrix-isolated BC13 , 6818. exchange rate of oxygen atoms with 02 , NO and N02 , mass spectrometric study, 6192. fractionation of uranium related to roll features in sandstone, 5433, 6166; 6819. methods of analysis, 4723. mixing in CO chemisorbed on tungsten, 6820. mixing in nitrogen chemisorbed on W, 6821. plasma, compressible, resonances of a spherical

void, 6347. preparations, TN275.

splitting in terms of the reciprocal kinetic energy

matrix, formulation, 721A.

substitution, change of dipole moment: structure

of the isobutane molecule, 3798.

Isotopically disordered, crystals, nonequilibrium processes, 4195. one-dimensional harmonic crystal lattices, numerical computation of time-dependent properties, 5522. Isotropic point source, single scattered neutrons, TN63

(PB161564).

Iterative, association coefficient, M269, p. 159. unfolding procedure, J 68A4-288, 401 (1964). Ivory-nut meal, 4474.

Ixiolite and other polymorphic types of FeNbOa, 6167.

Jacobian elliptic functions and theta functions, AMS55.

Japan, impression, 5399. Joint Conference—U. S., mechanical translation, 6860. Tokyo, minutes of meeting, of the triple commission for spectroscopy, 5491. Jensen's theorem for the derivative of polynomial and

for infrapolynomials, an extension, J 66B2-72,

53 (1962).

Jet Propulsion Laboratory, Pasadena, Calif., J 68D5-

364, 640 (1964). thinning devices for preparation of A1203 electron microscope specimens, 6168. Jicamarca radar in Peru, radio astronomy observations with 8.4 10'm2 50 Mc/s antenna, 8972. radio observatory, large 50 Mc/s dipole array,

5768. Johnson Island, nuclear explosion over, observed in Peru on July 9, 1962, 5316. Joint board on science education, 4359.

fillers, determination of bitumen content in ex- pansion joint fillers, 5282.

Institute for Laboratory Astrophysics, research, an- nual observatory report, 5200; 6241.

Joints, cylinder and ball-and-socket, vacuum tight, 5839.

structural, creep, 2348A.

waveguide, two-channel nulling method for measuring attenuation constants of short sections of waveguide and losses, 6573. Joule-Thomson process in cryogenic refrigeration sys- tems, TN227.

Junction, measurement of the reversible heat effect, passage of electric current across a liquid, 6020. two-arm waveguide, maximum efficiency, 5463. Junctions, waveguide, theory, generalized variational

principles for electromagnetic vibrations, application, 5376. Jungles, radio signals, measurement of the attenuation, J 68D8-388, 903 (1964).

Jupiter, decametric radio emissions, J 69D12-583, 1513

(1965). high-dispersion spectra, 3566. interferometric study of, at 10 and 21 cm, J 69D12-

588, 1552 (1965). observations of, at 8.6 mm, J 69D12-590, 1560

(1965). observed at short radio wavelengths, J 69D12-587,

1543 (1965). radio observations, 4253. simultaneous observations, three frequencies, J 69D12-591, 1561 (1965).

Jupiter's decimeter radiation, dependence, on the

electron distribution in its Van Allen belts, J 69D12-589, 1557 (1965). decametric emission, frequency and polarization structure of, on a 10-millisecond scale, J

69D12-586, 1537 (1965). 592
decametric radiation, results of recent investigations, J 69D12-584, 1530 (1965).

Justification for neglecting the compressibility of the ionosphere in VLF radio propagation, 6822. K K and Hg whiskers, growth and evaporation kinetics and surface diffusion, 5378. K fluorescence yield of argon by proportional- counter spectrometry, determination, TN91

(PB161592). K% Rb\ and Na+

, rhenium, kinetics of desorption, 5436. Kacser's second order born approximation to the bremsstrahlung differential cross section, TN81

(PB161582).

Kaolinite, Florida, surface area and exchange capacity

relation, 3803. surface area determination, using glycerol adsorption, 3804.

Kaolins, two domestic, clay mineral content, 3468. varying degrees of crystallinity, 4641. Kelvin functions, AMS55.

Kelvin or Thomson double bridge, a method of controlling the effect of resistance in the link cir- cuit, J 64C4-44, 267 (1960). Keratin, 4848.

feather, melting and contractility, 4759. Kerosine and related fuels, 4785.

Keto-inositols and a-yJo-trihydroxycyclohexenediolic.

Cyclic polyhydroxy ketones II, J 68A3-275, 287

(1964). Ketones, cyclic polyhydroxy, oxidation products of hexahydroxybenzene (benzenehexol) , J 67A2-

202, 153 (1963).

3-ketose, 5290. Ketoses, acetamido-deoxy-, TN274.

aldol reactions, 4967. higher, aldol reactions, synthesis, 6417. synthesis by aldol condensation, TN274.

Ketoximes, nuclear magnetic resonance study of synanti isomerism, 3938. Keyboard, double-binary, as a link in the machine-sorting of mail, address encoding, 5903. Keypounch controls for string-punching of statistical data, TN282.

K-ionization cross sections for relativistic electrons, 6172. Kihara parameters and second virial coefficients, for cryogenic fluids and their mixture, 5434. Kikuchi lines, widths of transmission, in silicon and

diamond, 9140. pattern from a silicaon wedge, 6171. Kilning bone char, study of the chemical reactions, 3951.

Kilocycles, propagation of radio waves at frequencies below 300, phase variations in V.L.F. propagation, 6284. Kilogauss, 185, superconductivity of NB3 Sn in pulsed

fields, 4331.

Kinetic, convergent, equation from the generalized master equation, theory of irreversible processes in plasmas derivation, 6495. equation for a plasma with unsteady correlations, 3239. equation for plasmas with collective and collisional correlations, 4140.

isotope effect in the reaction of methyl radicals with ethane, ethane-de, and ethene 1, 1, l-d3 , 3599.

isotope effects, determination, TN274.

reciprocal, energy matrix, formulation of isotopic

splitting, 721A.

theory, TN333.

spectroscopy and flash heating, observation of FeO

in absorption, 6238. theory of plasmas, transmission and reflection of electromagnetic waves, J 69D5-509, 735

(1965).

Kinetics, 5078. acid-catalyzed hydrolysis of acetal in dimethyl

sulfoxide-water solvents at 15, 25, and 35°, 6170. acid-catalyzed reaction of acetal in water-acetone

solvents at 15, 25 and 35°, 5437. adsorption, J 66A6-186, 503 (1962); J 67A6-248,

615 (1963). chemical, tables. Homogeneous reactions (sup- plementary tables), Mono.34; Mono.34, Vol. 2. chemical, tables, homogeneous reactions, alphabetical index, Suppl. 2 to C510.

crystallization, high polymers, 983A.

crystallization of natural rubber, effect of hydrostatic pressures, 5309.

crystallization, polymers, 4616. Cs* desorption from tungsten, 5015. desorption, Cs+ and Ba+ from rhenium, 5435. desorption, Rb+

, K

+

, and Na+ on rhenium, 5436. evaporation and growth, and surface diffusion of K and Hg crystal whiskers, 5378.

field emission, 5113. heat precipitation of collagen, 5016. hydrolysis of acetal in 7V-methylpropionamide- water and N-A^-dimethylformamide-water sol- vents at 20, 25, 30, and 40°, 4724. mechanism of the low-cubic to hexagonal phase

transformation of silver iodide, 6169. natural rubber, crystallization, the effect of hydrostatic pressure, 5747.

oxidation, silver in sodium chloride, 6022.

positive ion desorption from polycrystalline tungsten and rhenium, 5767. potassium and mercury crystals, vapor-phase

growth, 6526. rearrangement, liquid-liquid immiscible micro- phases in alkali borosilicate melts, 8983. study of ortho-para hydrogen conversion, 3382. transport of water through silicate glasses at ambient temperatures, 3600. Kirchhoff-Huygens' principle, J 65D5-147, 427 (1961).

Kirchhoff's Law and its generalized application to ab- sorption and emission by cavities, J 69B3-148, 165 (1965). Kjedahl method, determination of hide substance in leather, 6685. Klystron protection circuit, 5438.

stabilizer, ten kilocycle pound-type, 5730. Klystrons, small, water jacket, 4652. KMnF3 , ultrasonically induced nuclear spin transitions

in antiferromagnetic, 6517. Knife-edge diffraction path, VHF and UHF signal

characteristics observed, J 65D5-149, 437

(1961). Knight-shifts and line widths, nuclear magnetic

resonance of Pb2OT in lead-indium alloys, 5439. Knowledge of atomic transition probabilities, present

status, 5588. Knudsen cell, rotating, dissociation pressure of alumi- num carbide, J 70A3-401, 253 (1966). Knudsen's method of pressure division as a means of calibrating vacuum gages, 4952. Kossel microdiffraction photographs, exposure time

relations, J 69C3-201, 213 (1965). Kr and Xe, neutral, optically observed inner shell elec- tron excitation, 6274. Kr86 and atomic-beam-emitted Hg108 wavelengths, 4141. Kr, He, Ar, Ne, Xe, and Hg, elastic resonances in elec- tron scattering, 6721. 593
Krypton-85, M260-9. Krypton, NO in crystalline and liquid spectroscopic absorption, 5682.

solid xenon, and argon in the vacuum ultraviolet, absorption spectra, 3416A.

K-shell electrons, compton scattering, 4009. K2 Re Cl6 , spectrum, 3783. Kubela method of measuring water absorption of leather, 4793. K.V-350, experimental, 1-picofarad air capacitor, 5910. international comparison of voltage transformer calibrations, 5913. KWIC, programs, characteristics of and other computer- produced indexes, 5229. L (La III), spectrum of doubly ionized lanthanum, 9031. Laboratories, concrete testing, cement and concrete reference laboratory inspection service, 6433. cryogenics at NBS boulder; the world of cryogenics,

9105. development of astrophysical and microscopic-astrophysics, 6207.

electrical standards, measurement agreement, 4471

;

5177. Government research, role, 3348. NBS Boulder, establishment and maintenance of the unit of voltage, 5752.

physical, adjustable instrumentation bench, 4477. plan for the self-qualification, 4003. ranking, and evaluating methods of measurement

in round-robin tests, 6332.

self-qualification, plan, 3716; 4287. standards, mathematical services, 4744.

test by round-robin, ranking, 5628. Laboratory, analytical, problems, 3429. astrophysics, 4725.

calibration, operating, M248, p. 213. cement and concrete reference, inspection service for concrete testing laboratories, 6433. Central Radio Propagation, NBS, 6219. data, atmospheric band absorptions, TN178.

investigation of overvoltage, 3239A.

investigation of TAPPI standard T414 m-49, in- ternal tearing resistance of paper, 4494; 5923. measurement of the rate constant for N2+ +02 —

N2 +02+ at 300 deg. K, 6659A. measurement of the rate of the reaction N2 + 0 —

NO + N at thermal energy, 6823. measurement of the rate of the reaction 0

+ +Os—

»

02+ + 0 at thermal energy, 6824. rubber, of NBS, control of temperature and relative humidity, 6659.

scale column filtration tests, survey of variations, 3324.

studies of helium ion loss processes of interest in the ionosphere, 6173. study, effect of solar radiation on cooling load of stationary refrigerated vehicles, 5439A.

tests in the U.S.A., freezing-and-thawing durability of concrete, 4071.

tests results, intercomparisons, 4704. weathering of aphalts, comparisons of xenon and

carbon arcs as radiation sources, 6645. LaCl3 , spectrum, 5684; 5685. Lactobiono-1, 5-lactone, and D-glucono-1, 5-lactone, lac- tonization of aldonic acids, 5440. Lactonization of aldonic acids, D-glucono-1, 5-lactone, and lactobiono-1 5-lactone, 5440. Lag constants, radiosondes, and radio refractive index

profiles, 4010. Laguerre expansions for successive generations of a

renewal process, J 66B4-83, 165 (1962). Lambda varience and its application to TAPPI stand- ard T 414 m-49 for internal tearing resistance

of paper, a discussion, 5923.

Lamellae in bulk polyethylene at the crystallization temperature, X-ray study of isothermal thick- ening, 9146. Lamellar morphology, copolymer, J 68A3-272, 269

(1964).

polyethylene, diffusion in a polymer, 5990. Lamellar thickness, change of, and melting temperature

with time for bulk polyethylene, J 67A5-233,

441 (1963). Laminar flow in a rectangular pipe, behavior of isolated disturbances superimposed, J 64A4-50, 281

(1960). Lamm equation, nonlinear, the solution to, in the Faxen

approximation, J 70A1-383, 17 (1966). simple derivation of the Faxen solution, 5886.

solution, tables for the evaluation of the Faxen

approximation, J 70B1-171, 95 (1966). Lamps, tungsten filament, 400-700 nut, memorandum on

a procedure for obtaining spectral radiant in- tensities, 3251. Land and sea paths, mixed, curves for ground wave

propagation, 5273. Landau, damping with collective correlation, 4726. Ginzburg, parameter, temperature and mean free path dependence, 6425. Ginzberg theory of, superconductivity, lower critical

field, 5771. Langmuir adsorption kinetics, J 66A6-186, 503 (1962)

;

J 67A6-248, 615 (1963). Language, axiomatic string transformations; axle, 6611. common, one mans opinion, 5543. machine-usable natural, material, availability, 3983.

string, for symbol manipulation based on ALGOL

60, 4444. universal color, 6575. Languages, concepts of computing, 4999. machine translation, 4266A.

natural, hindsight technique in machine translation, J 66B2-71, 47 (1962). recognition of clauses in machine translation, 4266A.

standardization of programming, 6479. Lanthanide salts at low temperatures, audiofrequency

dispersion effects, 5208. Lanthanon trichlorides, low temperature magnetic

transitions, 6185. Lanthanum (Lain), spectrum of doubly ionized, 9031. Laplace transforms, AMS55.

Large, argument, error bounds for asymptotic expansions with an application to cylinder functions,

6049. 50 Mc/s dipole array at Jicamarca radio observatory, 5768. longitudinal retarded elastic deformation of rubberlike network polymers, 4727; 5442.

radiotelescopes, electronic scanning, 5334.

single crystals, characterization of, by high-voltage X-ray Laue photographs, 5738; 6117. Large-angle inelastic scattering, of 500-keV electrons, 5441. Large-aperture, grating spectrograph utilizing commercial camera components, 3240. interferometers with small beam dividers, J 67C3-

130, 201 (1963). Large-scale hydrogen liquefaction facilities, 6459. ionospheric irregularities, synoptic variations and

vertical profiles, 5720. Laser beam, fluctuations, over 9 and 90 mile paths,

6073. propagated through a turbulent atmosphere, signal degeneration, J 69D4-498, 629 (1965). Laser, double-quantum photodetachment of I", 6825. Fabry-Perot spectrometer for high-resolution spec- troscopy, J 68C1-147, 1 (1964).

gas, dependence of power output on the length and

rate of excitation of the discharge, 5277. 594
He-Ne, interference fringes with long path differ- ence, 5418. helium-neon, accurate length measurement of meter

bar, 5902. Moon distance measurement, J 69D12-623, 1681

(1965). multihole diaphragm, J 68C1-149, 25 (1964).

pulse, study of anthracene fluorescence excited by

the ruby giant, 5165. Raman, excited by an ordinary ruby laser, characteristics, 6628. Lasers, 5443.

gas, breadth of decay quanta, 6615.

implication, aspect of interference at high field strengths, 5912. length measurement, 6174. nonequilibrium chemical excitation and chemical pumping, 6891. quantum statistics, J 68D9-404, 1031 (1964). RF excited helium-neon gas, at 632.8 nm, gas mixtures and pressures for optimum output power,

6769.

stability of traveling waves, 1035. Intensification in radiographic emulsions, 6826. Latent class analysis as an association model for infor- mation retrieval, M269, p. 149.

slides, preparation, 5587. Latex, polystyrene-aliphatic soap, 4631. Lath products and gypsum board, R266-63.

Latin squares with a certain type of row-column inter- action, analysis, 3330.

Latitude, equatorial, HF propagation characteristics, 5385. geomagnetic, characteristics of spread F, 5230. high magnetic, observations of short-duration cos- mic noise absorption events in conjugate re- gions, 6375. red arcs, distribution, 5302. survey of the night airglow, 6547. Latitudes, conjugate point observations at a variety of high geomagnetic, 5970.

high, study of 2-Mc/s ionospheric absorption measurements, 3405. middle and low, regular oscillations near 1 c/s, observed, J 69D8-542, 1089 (1965).

middle, near the peak of the solar cycle, total elec- tron content of the ionosphere content, 5806.

relativistic subauroral, electron precipitation into the mesosphere, 8989.

Lattice, application of the theory of absorbing Markov

chains to the statistical thermodynamics of polymer chains, 5925. constants, measurement of the, neon isotopes in the temperature range 4-24°K, 4753; 5468.

defects, electron energy levels and their relationship, reduced rutile, 5327. deformation and recovery, detection of, in epsilon phase silver-tin alloys, J 68A3-279, 317 (1964).

dipole, dielectric relaxation in a high temperature,

5294. frequencies and rotational barriers for inorganic carbonates and nitrates, J 66A5-176, 407

(1962); 4728. heat capacity, finite, spin-lattice relaxation, 6718. model of a polymer molecule, statistical thermodynamics, 6402. parameters and lattice energies of high-pressure polymorphs of some alkali halides, J 68A1-258,

105 (1964).

points in a sphere, J 69B4-156, 265 (1965). relaxation time, size-dependent spin, 5659. relaxation time, spin, paramagnetic dispersions, 5798.

spin, relaxation in two rare earth double nitrates, 4932. unusual frequency spectrum, 3931.

vibration and polaron coupling constants in rutile (TiO»), polar modes, 6294.

Lattices, cubic, statistical dynamics, 3793. disordered one-dimensional harmonic crystal, numerical computation of time-dependent properties, isotopically, 5522. simple cubic, statistical dynamics, 4313. Laue photographs, high-voltage X-ray, characterization

of large single crystals, 5738; 6117. Lavas, Hawaiian, Sr87 /SrM ratios, 6389. Law, angular scattering, for the moon at 6-meter wavelength, 6601. Lorentz gas with a repulsive r~' force, relaxation, 6345. Layer, equatorial F, after sunset, 5412. F, daytime equatorial, 6439. ionospheric F2 , theoretical study, 5894. night-£\ 5027. tropospheric, influence of refractive index profile in VHF reflection, 6129. Layers, biological systems, measurement of water vapor

boundary, 9086. elevated super-refractive, arising from atmospheric

subsidence, climatology, 5949. growth, ammonium dihydrogen phosphate, 6775. inhomogeneous, with asymmetric profiles, a note concerning the reflection of waves, J 69D5-505,

701 (1965). LCSO-MO-SCF study of the structure of H02 , 4487. measurement of moisture boundary, and leaf trans- piration with a microwave refractometer, 5466. Lead alloys, four critical fields in superconducting in- dium, 6080. nuclear magnetic resonance, 6233.

solute nuclear magnetic resonances, 9012. Lead and bismuth, (y,n) cross section, 3834. Lead and zinc oxide in white paint pigments, the polaro- graphic analysis, 9092. Lead dendrites, structure of electrodeposited, 9048.

fluoride, cubic, at room temperature, elastic constants, 6720. indium alloys, knight-shifts and line widths of the nuclear magnetic resonance of Pb207

, 5439.

iodide films with RH at room temperature, study

of the variation of the surface electrical resis- tance, 6567.

isotopes and bismuth, photodisintegration, 5031. problem in calorimetry, heater, 6111. Lead in leaded steels by X-ray spectroscopy, 4573. Leader and junction processes in the lightning dis- charge as a source of VLF atmospherics, J

68D7-374, 771 (1964). Leaf temperature, and energy exchange, 5444; 6175. transpiration, microwave refractometer, measure- ment of moisture boundary layers, 5466. Leak-resistant rotation seal for vacuum applications, J 67C4-145, 335 (1963). Leakage current measurements, transistor screening

procedure, J 69C4-213, 319 (1965). Leaky wave and surface antennas, J 64D6-96, 746

(1960). Leaky waves supported by a warm plasma slab, J 69D5-

508, 729 (1965). Leander McCormick Observatory, interferometer test of the 26-inch refractor, 6146. Least squares, meaning of "least," 6461. precursors to residuals, minimum sums, 4901A.

Leather, apace, development directions, 4035. application of Archimedes' principle to determination of apparent volume, 6429. chrome-retanned, effect of outdoor exposure on some

properties, 5311. chrome-tanned, with vegetable tannings, 4376. comparisons of tearing-strength, 6646. fungicide, 5,6-dichloro-2-benzoxanzolinone, 4036. impregnated sole, dimensional stability, 3185. 595
Kjedahl method, determination of hide substance,

6685. Kubela method of measuring water absorption,

4793. macro-pores, determined with a mercury porosi- meter, 5454. physical and chemical examination, sampling, 9002.

side upper, sampling, 342A.

sole, water penetration testing machine, 3912.

soles, increase in mileage, 3576. upper, shoe, study of two water resistance testers, 3406. Leathers, colorimetric determination, 4529. Leclanche cells and batteries, impedance, 5398. commercial, dry cells and batteries, impedance, TN190.

Lectures on, ion-atom collisions, TN185.

matroids, J 69B1&2-131, 1 (1965). Legendre functions, AMS55.

Legibility of alphanumeric characters and other symbols. I. A permuted title index and bibliogra- phy, M262-1. Lehmans switching game and a theorem of Tutte and

Nash-Williams, J 69B1&2-135, 73 (1965). Length and mass calibration at NBS, M248, p. 9. measurement, M256, p. 349. measurement, lasers, 6174. Lengths and sizes, womens hosiery, CS46-65. Lengths of a single polymer molecule with excluded- volume effects, on the limiting shape of the

distribution function, 8916. Lennard-Jones, TN333.

Lens distortion, precise evaluation, 5783. performance, prediction, design data, spot dia- grams, Mono.93.

response for sinusoidal and square-wave targets at several focal positions, comparison, J 65A6-127,

465 (1961). shaped objects, precision refractometry, 8953.

testing, J 68C3-160, 155 (1964).

Lenses, airplane camera, location of the plane of best average definition for, 3604. inhomogeneous glasses, performance, 9089. longitudinal spherical aberration in extra-axial

region, measurement, J 66C3-95, 185 (1962). standards and contact, 5691.

testing, wave front reversing interferometer, J

70C2-220, 65 (1966). Lenses and cameras, photogrammetric, calibration at NBS, 5223. Level codes, TN285.

crossings (Zeeman), hyperfine structure of HG103 *, Hg105 and Hg196 *, 6786. diurnal and seasonal variations of the atmosphere

near the 100-kilometer, 5999.

sensors, point, liquid hydrogen, performance, 6469.

Levels, autoionizing atomic energy, He, Ne and A, 5502.

electron energy, their relationship to lattice defects

in reduced rutile, 5327. helium, excitation, classification of two-electron,

5235. metastable, continuum and the independent particle model, 5474; 6206. negative ions, identification of energy, 8914. neutral cersium (Ce i), low energy, 5452. new odd low, neutral erbium, 6886. symmetric-top, molecules, stark energy, 5694.

Levels, energy, atoms and ions, empirical relations, 6736. energy, negative ions, identification, 6787. polarons in a magnetic field, 6040. Pr3+ in the vapor state, 6737. Lewis relation, calculation of the temperature of flat- plate wet surface under adiabatic conditions, 6619. Low frequency and very low frequency, fields propa- gating near and into a rough sea, J 69D2-464,

273 (1965).

frequency and time services of the NBS, 6176; 6837A.

propagation between the ionosphere and the ground, concerning limitations and further corrections

to geometric-optical theory, J 68D1-318, 67

(1964) . wave hop theory, path integrals, J 69D11-580, 1469

(1965) . Low frequency, band at Bangalore, atmospheric radio

noise bursts, J 69D10-569, 1351 (1965). sky-wave propagation, 3925.

L-glycero, 5290.

L-gulo, 5290. L-idose-6-C", 4579. Libraries, M274; M276.

Library mechanization of current status of graphic

storage techniques, 6438. National Bureau of Standards, 4363. National Bureau of Standards, periodicals and

serials received, M274.

science, books, 4390. Liesegang rings, 4142.

Life, possibility on other planets, 6165. Life testing, problems: factorial experiments, 2700A;

3209. procedures, 3437. procedures based on the exponential distribution, 4283. Lifetime and movement of artificially produced electron clouds observed with spaced ionosondes, 5769. Lifetimes in neon I, atomic, 6609.

Lifts, automotive, CS142-65. Ligand positions in inorganic complexes, 6684. Light, absolute photometry of the zodiacal, 9058. absorption by interstellar grains, 6556. balancing filters for camera exposure of color films, 3120; 3935.

effect of additives on silver iodide particles, 4614.

effect, oxide films formed on copper single crystal surfaces in water, 6468.

effects of deuteration and temperature upon the

photolysis of cellulose in a vacuum with 2537 A,

6013. element compounds at the NBS, current thermo- dynamic research, 3492. element program, combustion and reaction calorim- etry of several compounds of interest, 6640. element purification, TN273.

emission from the surface layer of BaTi03 , 2610A.

gases, results on the energy-dependent Milne problem, 6381. international standard, 3585 ; 4897. metals in the Metallurgy Division, NBS, research,

4279. mixing, phase-independent sources, 4252. modulated scattering technique for diffraction field measurements, J 68D4-353, 355 (1964). night sky: astronomical interplanetary and geophysical, 6457.

nuclei, empirical rules for predicting ground-state

spins, 6038.

nuclei, photodisintegration, 5561.

partially coherent, phase and amplitude contrast microscopy, J 69C3-200, 199 (1965).

scattered from a plasma, 8996. scattering from dilute polymers solutions, 6177. scattering measurements on solutions of some qua- ternary ammonium salts, J 68A4-284, 359

(1964).

scattering, validity of Einstein-Smoluchowski theory, 6264. second, velocity, redefinition, 5539; 5790.

source, atomic-beam, sealed-off Hg108

, 3757. source for producing self-reversed spectral lines, J 66A4-166, 321 (1962).

source, synchrotron, autoionization in helium, 5210. speed, 5048. 596
statistical aspects, random tiueiuation, coherence

aspects, J 68D9-398, 989 (1964). synchrotron, NBS 180 MeV machine, characteristics, 6631. 2537A, photolysis of cellulose in a vacuum, 6287.

ultraviolet, nature, which accompanies the decomposition of some azides, 3686.

velocity, 4238; 4437.

visible, remarks on coincidence experiments, 5636. Lightning, characteristics as derived from sferics, 6829. discharges in the band 1 kc/s to 100 kc/s, radiation

field characteristics, J 67D5-286, 539 (1963).

discharges, radiofrequency radiation, J 64D6-96, 638 (1960).

flash to earth as a source of VLF atmospherics, the return stroke, J 68D7-375, 777 (1964). hazards to mountaineers, 4729. Lights, signal, background and objectives of the U. S. Standard for colors, H95; 3149; 4976. Limestone aggregate, reactive, 4591; 4594. Limit, indication, 4691. Limit, ionization, inelastic electron scattering in rare

gases, 5707. theorems, 1930 to 1957, selected bibliography, J 64B3-34, 175 (1960).

Limitations, geometrical optics solution for curved sur- faces with variable impedance properties, J

66D6-230, 707 (1962). radiosonde punch-card records for radiometeorological studies, 4143. unipotential electron guns at low voltages, J 67C4-

138, 279 (1963). Limiting shape of the distribution function of lengths

of a single polymer molecule with excluded- volume effects, 8916. auditory perception, mechanistic model, 5878. calorimetric residual entropies of glasses, 6830.

confidence, reliability complex systems, 5257.

effect of coronal self-emission upon the excitation

state of coronal ions 4919. Linac, TN276.

Linacs, electron, beam loading and beam blowup, 5211. prebunching, electron, 5582. Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Mass., J 68D5-364, 640

(1964).

Line, blanketing effect, difference between a non-LTE

and a pure absorption model, 6641. broadening theory, electron density and temperature in dense plasmas by application, 4751. broadening, X-ray, calculation of crystalline size distributions, 5218. data handling system for the NBS LINAC, 6245. formula notation for coordination compounds: III Deviations from idealized configurations, J

70A1-384, (1966). formula notation system for coordination compounds, 6548.

intensities and widths in the first overtone band

of CO, 4590. parameters and computed spectra for water vapor

bands at 2.7 n, Mono.71.

pit, best, 4901A.

profiles in the far ultraviolet absorption spectra of

the rare gases, 6831. shape in microwave absorption, transition from

resonant to non-resonant, 9119. shape of ultraviolet absorption in solid noble gases,

4144. shapes of collective excitations in Al, Be, and Ge,

6242.

sources, intense resonance, photochemical work in the vacuum ultraviolet region, 6141.

spectra, temperature measurements, 4923. strengths of asymmetric rotors. Microwave spectral

tables, Mono.70, Vol. II.

surge, transfer, 9118. transfer problems, 5446.

tune, multistub coaxial, 5879. variable characteristic impedance, coaxial, 6576. widths and knight-shifts, nuclear magnetic reso- nance of Pb2'" in lead-indium alloys, 5439.

Line-of-sight, microwave transmissions, experimental

study of phase variations, Mono.33.

paths, fading on microwave, 6067. systems, analysis of the effects of ground reflection, 6589. Linear, accelerators, beam loading, 6612. antenna arrays, application of the inverse Z-trans- form theory to the synthesis, 5909. antennas driven from a coaxial line, input admittance, J 67D1-246, 83 (1963). array synthesis, application of Bernstein polynomials and interpolation theory, 5924.

bivariate, interpolation for analytic functions, 3267.

calibration curves, citing by minimum sums of absolute deviation, 4283A.

calibration curves, evaluation of precision of analytical methods involving; which measure of

precision, 6537. chain, TN327.

chain of atoms, TN328.

circular polarization, radar corner reflectors, J

66D1-171, 23 (1962). copolymers of ethylene and propylene, pyrolysis of, J 65A3-105, 221 (1961).

differential equations, convergence of asymptotic

solutions, 1430A.

differential equations of the second order with a

large parameter, 3241. frequency modulation, 4436. model, 851A.

notation system, 9018.

notations, TN285.

photon polarization by pair production, measurement, 4752.

polarization, bremsstrahlung, 3451. polarization of lunar emission, J 69D12-605, 1613

(1965). polyethylene, fusion of polymer networks, 3553. programming: relation to minimum sum of absolute deviation, 4283a. pulsed time-of-flight mass spectrometer, observation of the products of ionic collision processes and ion decomposition, 8905. regression and analysis of variance, estimation

of weighting factors, 6051.

relations among heats of transport, status, 9041.

strain gage accelerometers used in telemetry, general characteristics, TN150.

thermal expansion, aluminum oxide and thorium

oxide from 100° to 1100°K, 4730. thermal expansion, elastomers in the range 300°

to 76°K, 5447. transducers, analytical methods, Mono.67. tuning of a microwave cavity, 6831A.

velocity-gradient, term in time-dependent pair dis- tribution function, 5448.

viscoelastic behavior, 4247.

viscoelastic behavior of rubberlike polymers and

its molecular interpretation, 3844. Linear and branched polyethylene, heat capacity, 5759. Linear and nonlinear signal processing, effect of, on

signal statistics, J 68D9-395, 953 (1964). Linearly on concentration, exact Faxen solution for

centrifugation, 6057. constant correlated color temperature, based on MacAdam's (u, v) uniform chromaticity trans- formation of the CIE diagram, 5449.

Lines, Balmer, Stark broadened, hydrogen, profiles, 5597. 597
cryogenic transfer, air dielectric coaxial cables, 5180. Fe I between 2500 and 3200a, oscillator strengths,

8928.

fixes with unknown target positions, estimation of variances, J 65D3-129, 263 (1961). hydrogen chloride and carbon monoxide, foreign broadening, J 66A5-177, 435 (1962).

infrared, pressure induced shifts, due to polar

molecules, 5591. HC1 perturbed by noble gases, shift of the R(0)

and P(l) infrared, 9006. NIL of HCN, broadening of the, due to argon, carbon dioxide, and hydrogen chloride, 5216. oxygen and their relationship to the thermal

noise emission spectrum of the atmosphere, width of the microwave, 9139. rocket ultra-violet, radiation transfer problems,

5617. 1067 and 1048A, photolysis of ethane at the argon

resonance, 8940A.

widths of transmission Kikuchi, in silicon and

diamond, 9140. Linewidth, anomalous NMR, lithium and sodium, 6248. Linewidths in the 2-0 band of carbon monoxide broad- ened by nitrogen and hydrogen, 6178. Link circuit, method of controlling the effect of resist- ance in, of the Thomson or Kelvin double

bridge, J 64C4-44, 267 (1960). tropospheric relay, phase instability, 5560. Links, earth-space, effects of tropospheric refraction, 6719. tropospheric communication, performance of, sin- gly and in tandem, 5585. LiO, LbO and Li202 , gaseous, infrared spectra struc- tures and thermodynamics, 5763. LbO, Li2 02 and LiO, gaseous, infrared spectra struc- tures and thermodynamics, 5763. Li202, LiO, and Li20, gaseius, infrared spectra struc- tures and thermodynamics, 5763.

Liouville representation of quantum mechanics with

application to relaxation, 6179. Liquefaction facilities, large-scale hydrogen, liquefaction of hydrogen, 6459. hydrogen, basic principles, 6458. hydrogen, large-scale hydrogen liquefaction facilities, 6459. Liquefied-gas flow measuring device, Venturi tube, 3880. Liquefied gases, handling, 4144A.

petroleum gas liquid-measuring devices, examination. A manual for weights and measures

officials, H99.

Liquefier, helium, laboratory-size, design, construction, and performance, 3494. Simon, ideal yield, 5397. Liquid, air, 4145A.

crystalline argon and nitrogen, vacuum ultra-violet absorption spectra of oxygen, 6523.

crystalline rare gases, absorption spectra of dia- tomic molecules, 5901. density matrix: monatomic molecules, 4719. drop collisions, 4145. drops and solids, note on particle velocity in collisions, J 64A6-71, 497 (1960).

drops, resistance of white sapphire and hot-pressed alumina to collision, J 64A6-72, 499 (1960). drops with liquids, collisions, TN89 (PB161590).

flowing in a distensible tube of appreciable mass, 788A.

gaseous carbon monoxide, thermodynamic property

values, TN202. H2-cooled, high field, aluminum-wound magnet,

5383.

junction, measurement of the reversible heat effect attending the passage of electric current, 6020. krypton, NO in crystalline and, spectroscopic absorption, 5682. mixtures, simple, statistical surface thermodynamics, 6401. oxygen, boiling, bulk density, 4804. oxygen, boiling, experimental determination of the bulk density, 5346. parahydrogen, dielectric constant, TN144 (PB161-

645). parahydrogen, freezing to 350 atmospheres, 5590. phase, 5032. pure, density fluctuations and heat conduction,

4026. requirements, cool-down of cryogenic equipment,

5450. saturated, para-hydrogen, 5047. saturated, to 80 °K, P-V-T data of normal hydrogen, compilation and correlation, 3376.

scintillation counting, TN274.

solid and gas-phase, photolysis of dimethylmercury, the reactions of methyl radicals, 5787.

solid bismuth, differences in characteristic electron energy-loss spectra, 6692.

solid chromatography, thermistor for detecting

eluent fronts, J 65C4-77, 245 (1961).

solvents at low temperatures, thermodynamics of

solid carbon dioxide solubility, 9114. sugar, analysis, 3136. system, two-layer, disturbances due to the motion

of a cylinder, J 64C3-42, 241 (1960). Liquid helium, temperature region, 4900. vapor pressure measurements, 4885. vapor pressure regulator, 4146. wave mode modification, 9136. Liquid hydrogen, aluminum magnet cooled with, 4478. bubble chambers, 6180. chemical and nuclear rockets, 3602.

cooling, helium gas injection, experimental in- vestigation, 5349. experimental study concerning the pressurization and stratification, J 65C2-58, 81 (1961). performance of point level sensors, 6469. pressurization and stratification, 3970. refractive index and dispersion, TN323.

safety, 6355. saturated, densities, 4347.

solubility of helium, 6369.

static liquid nitrogen, nucleation characteristics, 6235. uninsulated lines, transfer, 3890. uses and technology, 6157; 6424. Liquid-in-glass thermometers, Mono.90; 4147; 5082. Liquid-liquid immiscible microphases in alkali borosilicate melts, rearrangement kinetics, 8983. Liquid-measuring devices, examination of liquefied petroleum gas. A manual for weights and measures officials, H99. Liquid-medium step-function pressure calibrator, 5956;

5874. Liquid nitrogen, evaluation of ball bearing separator

materials, 3536.

liquid hydrogen discharging into a vacuum, pre- liminary study of the orifice flow characteristics, 5883. measuring the cooling load of refrigerated vehicles by free evaporation, 6859.

solution, vacuum-ultraviolet photolysis of ethane,

9130.

static and liquid hydrogen, nucleation characteristics, 6235. testing of ball bearings, 4342; 4977. Liquids, acoustic properties, 5178. 598
high pressures, simultaneous dielectric constant and volume measurements, 9008.

ionization, radiation, 251A.

low-temperature, 3267B.

low temperature, large scale to an accelerated experimental program, 3383. molecular collision models and transition probabilities, 4780. negative pressure, investigating electrochemical phenomena at an electrode, galvanostalametry,

5370. non-associated, sound absorption, 4549.

relative roles of free volume and activation energy

in the viscosity, 8920.

stratified, flow and stress near an interface, 3544. theory of vibrational relaxation, 4386. thermal diffusion, 4692.

List processing, TN285.

Listing of sudden ionosphere disturbances, 6460. Literature, computer, bibliography, 1946 to 1963, M266.

heat transfer from solid surfaces to cryogenic

fluids, TN122 (PB161623).

instrumentation, guide, M271.

reference file, aspects of the NBS instrumentation,

5929.

statistical, selected biography, J64B3-34, 175

(1960) ; J65B1-46, 61 (1961); J66B1-69, 15 (1962) ; J66B3-80, 109 (1962); J 67B2-97, 91

(1963) . survey, physical and mechanical properties of elec- trodeposited copper, 8942. Lithium, 4148. atom, calculations of hyperfine splitting, 5220. atomic spectroscopy, NSRDS-NBS4, Vol. I. beryllium, atomic scattering factors, iso-electronic sequences from accurate analytic Hartree-Foch wave functions, 5207. bromide on the structural transition of ribonuclease

in solution, 4349.

chloride, microwave spectrum, 6212. dipotassium trimetaphosphate monohydrate, 5052.

fluoride, calcium fluoride, barium fluoride, and

sapphire, effect of temperature on the vacuum

ultraviolet transmittance, 6717.

iso-electric sequence, wave functions and oscillator strengths, 5856. perchlorate, ammonium perchlorate, and sodium

perchlorate, heats of formation, J 65A1-85, 66

(1961) . perchlorate, formation of monomeric amides, 4539. sodium, anomalous NMR linewidth, 6248. Littrow spectrograph, inexpensive f/g grating, 3132. Load, capacity of gas-lubricated bearings with inherent

orifice compensation using nitrogen and helium

gas, TN115 (PB161616).

cooling of refrigerated vehicles by free evaporation

of liquid nitrogen, measuring, 6859. cooling of stationary refrigerated vehicles, labora- tory study of effect of solar radiation, 5439A.

controller, 4911.

protection, triggered fuse, 6512. Loading, beam, linear accelerators, 6612. determining the strength of flat glass, comparison

of single-point and two-point, 5962.

effect of rate, time of trituration and test temperature on compressive strength of dental amal- gam, 5312.

stress-strain relationships in yarns subjected to rapid impact, 5706; 9047.

Local, curvature of wavefronts in an optical system,

6181.

electric fields in the aurora and airglow, excitation, 6060. standards laboratories, 1960, 3603.

Localized variation of the paths of two paraxial rays, 5141. versus delocalized pictures in resonance energy

transfer, 5276. Localized-induction concept on a curved vortex and

motion of an elliptic vortex ring, 6832. Location, irregularities responsible for ionospheric

scintillation of a radio source, 5770. plane of best average definition for airplane camera

lenses, 3604. plane of best average definition with low contrast

resolution patterns, J 65C3-71, 195 (1961).

zeros of some infrapolynomials with prescribed

coefficients, 6256. Logarithmic frequency spacing in ionogram analysis,

use, J 64D5-87, 501 (1960).

functions, elementary transcendental, AMS55.

Logic, a magnetic amplifier for use with diode, 5876.

cards, TN268.

design symbols, TN268.

diode, magnetic amplifier, 5137. Logical design, 1865A.

Logistics in electronic computer design, 3858A.

Long-distance, location and direction-finding problems,

J 65D3-124, 233 (1961). one-hop Fi propagation through the auroral zone, 4150. radio propagation, ionospheric irregularities, J 66D3-194, 265 (1962). tropospheric circuits, path antenna gain and com- ments of properties of 400 mcps, 5555. VLF propagation, phase and time variations, J

68D11-424, 1223 (1964). Long, helical spring behavior under fluctuating load, 1759A.

lived effects in the D region after the high-altitude nuclear explosion of July 9, 1962, 6182. look at national research needs, 3337. path difference, using He-Ne laser, interference

fringes, 5418. period very low frequency emission pulsations,

6833.

periods, constancy of a modified Weston standard

cell, 5971. range VLF propagation, use of electromagnetic

signals emitted from nuclear explosions, 9099. term magnetic activity on medium frequency sky wave propagation, 9017A. term phase stability of the 19.8 kc/s signal trans- mitted from Hawaii, and received at Boulder,

Colorado, J 68D3-343, 283 (1964). term working stress of thermoplastic pipe, 4151.

characteristics, air-ground propagation in band

nine, 5451.

thin rods, gas, first order phase transition, 5361. wave-length, propagation, terrestrial radio waves

two theoretical techniques, 5538. waves associated with disturbances produced in plasmas, J 68D1-316, 47 (1964). Longitude distribution of proton flares, 6834. Longitudinal, large, retarded elastic deformation of rubberlike network polymers, 4727. magnetoresistance of copper, 6834A.

resonance vibrations of square and cylindrical rods, cross-sectional correction for computing

Young's modulus, J 66A2-153, 193 (1962). retarded elastic deformation, large, rubberlike net- work polymers. 11. Application of a general formulation of nonlinear response, 5442. Loop antennas, calibration of at VLF, J 65C3-70, 181

(1961). arrays, VLF superdirective, J 67D5-288, 563

(1963). prominence mechanism, source of mass and energy and a model, 6836. 599
prominences and coronal condensations, 6835; 6836. Loops, dislocation, in deformed copper, 4597; 5527. Loran computation, rapid, approximate method, 954A.

Loran-C, timing potentials, 4391. Lorentz and Rayleigh gas, relaxation of the hard sphere, 5540. Lorentz corrections in rutile, 4152. gas and Rayleigh, hard sphere, relaxation, 6259. gas with a repulsive r"

s force law, relaxation, 6345. group and SU3 , symmetry group, 5892. group, complex, with a real metric, 5963. Lorenz-Lorentz equation near the critical point, 8922. Loss angle of solid-disk specimens, techniques for using

air-gap method for precise determination of the dielectric constant, 6423. channel capacity resulting from starting delay hi meteor-burst communication, J 64D5-85, 493

(1960) . concepts, insertion, 6139. energy, electrons in solids, 6445. measurements, electron energy, used for observation of optically forbidden transitions in the continuum of the rare gases, 6239. mismatch, should the conventional definition be abandoned, 6365. processes of interest in the ionosphere, laboratory

studies of helium ion, 6173. straggling, energy, of protons and mesons: tabulation of the Vavilov distribution, 6041.

terrestrial, helium, new speculation, 6553. Losses, characteristic electron energy losses, optical constants of thin films, 6268. electron energy, optical constants in the vacuum

ultraviolet, 6267.

E-field and H-field, ground based antennas, 5153. magnetic, temperature dependence, 4974.

residual, dielectric specimens, J 65C2-61, 101

(1961) . wageguide joints, two-channel nulling method for measuring attenuation constants of short sec- tions of waveguide, 6573. Losses, energy, and elastic resonances in electron scat- tering from PL, 6042. electrons in solids, characteristics, 5946. ranges of electrons and positrons, tables, 6420. ranges of heavy charged particles, tables, 64:.:1. Lossy earth on antenna gain, effect, Part I, J 68D2-

339, 251 (1964); Part II, J 68D7-378, 813

(1964). magnetoplasma, electromagnetic waves, TN205.

magnetoplasma, reflection of electromagnetic waves, J 68D1-321, 95 (1964).

materials, TN336.

Loudness, study of methods for estimating, 9049. Louver cloth and insect screening, vinyl-coated glass

fiber, CS248-64. Lovibond color system, 5007. Low, activity, radiochemical determination of uranium,

6331. atomic number dye systems for ionizing radiation measurement, 6837. atomic number elements, total photonuclear cross

sections, 9117. capacity, high-speed, gas-bearing-supported expansion turbine, a refrigeration system, 5161. contrast resolution patterns, location of the plane

of best average definition, J 65C3-71, 195

(1961).

cubic, kinetics and mechanism of the, to hexagonal

phase transformation of silver iodide, 6169. density gas flow, apparatus for electron optical study, 3431. density molecular beams, 3933.

electrical resistivity, preparation of copper crystals, 8956.

energies, exosphere, 4080. energy, levels of newtral cerium (Ce i), 5452. even configurations in the first spectrum of ruthe- nium (Ru I), 3243. even configurations in the first spectrum of thorium,

3608. Low frequencies, dielectric constant and dielectric loss of Ti02 (Rutile), 3501 A.

frequencies, numerical values of the path integrals, TN319.

impedance Maxwell bridge for measuring toroidal magnetic materials from 1 kc to 100 kc, 4424. input VSWR coaxial diode switch for the UHF

band, 5875.

level low-frequency detection system, 4732.

lecels, new odd, neutral erbium, 6886. long-period, frequency emission pulsations, 6833. medium frequency radio propagation, 3605.

noise beam-type microwave tubes, J 64D6-96, 763

(1960). pressure and vacuum measurement, bibliography and index, Mono.35.

pressure arc source for the emission spectrum of the FeO molecule, 5136. pressures and temperatures, gaseous heat conduction, 3216. pressures, room temperature oxidation of iron at, 6352. radiofrequency model ionosphere reflection coeffi- cients, TN69 (PB161570).

scatter high current gas target for D-D neutrons

3610.

sidelobes, investigation of concentric ring antennas,

6596. spin di complexes, osmium (IV), magnetic susceptibilities and dilution effects, 5456. surface coverage, adsorption of polymer molecules,

6586. values, extremely, spectral irradiance, standard,

6564. voltage electron guns, design, 5280. Low frequency, TN335.

electrical calibrations at the NBS, M284, p. 31. electromagnetic pulse, attenuation of the ground

wave, TN310.

electromagnetic waves in an unbounded magnetoionic medium, approximate full wave solution, J 66D1-178, 107 (1962). emissions, relation between auroral radio absorption, 8919.

fields, new absolute null method for the measure- ment of magnetic susceptibilities, 5146; 5501. ground wave phase perturbations, a few observations, J 65D4-143, 393 (1961). ionograms, interpretation of some features, 3235. ionospheric phenomena in radio navigation systems,

4802. ionospheric radio propagation phenomena, analysis, J 65D5-156, 507 (1961).

low-level, detection system, 4732. monitoring at Boulder Laboratories, methods and

techniques, 4175. propagation, 5121. propagation, diffractive corrections to the geometrical optics, 3503. propagation, heavy ions, TN313.

propagation in the earth-ionosphere waveguide of non-uniform width, 5120. propagation, theory of, 4713. pulses utilized in a radio navigation system, note on the propagation, TN118 (PB161619). pump, parametric amplification, 4215. radio propagation into a moderately rough sea, J

67D5-287, 551 (1963). radio signal, propagation, 4863. radio waves, TN330.

600
sinusoidal accelerations, dual centrifuge for generating, J 66C4-111, 357 (1962).

solar bursts and noise storms, 3609.

variations, quartz oscillators, spectrum analysis, 5683. . 4

. UHF electrical quantities, measurement and standardization, 6853. very, earth-ionosphere wave guide, 4642. very, propagation induced by an ionospheric de- pression of finite extent, phase changes, 6247. VLF, ELF terrestrial radio wave fields, complete mode sum, Mono.78. Low temperature, adsorption of nitrogen and methane

from hydrogen gas on three different adsorbents, 5130. anomaly in response of semi-conductor detector, 5921. apparatus, constructional materials, 4153A.

characteristic electron energy loss measurements,

3994. characteristics of some commercial thermocouples,

4733. chemical reactions of free radicals, 3463.

coefficient of capacitance, some ceramic dielectrics, 3771.

coefficient of resistance useful in calorimetry (10°K - 380°K), electrical resistance of wires,

6018.

electrical measurements, shielded coaxial leads, 3762. equipment and techniques, 3611. experiments, dewar system, 3501. gamma-ray distribution from oriented cerium-141 and its application to thermal contact, 5757. heat capacities, 4617. infrared spectroscopy, lattice frequencies and rotational barriers for inorganic carbonates and ni- trates, J 66A5-176, 407 (1962). infrared studies of the chemistry of free radicals, 6183. infrared study of intermediates in the photolysis

of HNCO and DNCO, 6184.

insulation, 4734.

liquids, 3267B.

liquids on a large scale to an accelerated experi- mental program, 3383. magnetic transitions in lanthanon trichlorides, 6185. magnetic transitions in some rare-earth trichlorides, 6838. measurements, detection and damping of thermalacoustic oscillations, J 69C1-183, 35 (1965). mechanical stainless steel, 4992. phase transition of Colemanite, 3612. properties of cerous magnesium nitrate, 3613. properties of materials, 5675.

service, enameled cold end service, 4595.

solid state thermometer, disclosure, TN287.

static seals using elastomers and plastics, 3614. thermocouple thermometry, 4155. thermocouples, 4735. thermocouples, Gold-cobalt or constantan vs. copper

or "normal" silver, 4156. thermometers in the presence of stray rf fields, use of carbon resistors, 3897. thermometry, 4154; 4736; 5083. transport properties of commercial metals and

alloys, 3615; 3616; 3617. transport properties of copper and its dilute alloys: pure copper, annealed and cold-drawn, 3245. X-ray diffraction techniques, of diborane and the products of a microwave discharge in diborane,

3208. Low temperatures, adsorption of methane on silica gel, 4345. audiofrequency dispersion effects in lanthanide

salts, 5208.

austenitic stainless steels, 4740.

chemical reactions. A rotating cryostat for mixing

reactants at 4.2°K, 3998. disproportionation-combination reactions of alkyl

radicals and hydrogen atoms, 5996.

electrical discharge products of nitrogen and car- bon monoxide or acetylene, emission spectra

of solids condensed, 4066. evacuated powder insulation, 3204. 540 °R and from 10 to 1500 psia, tabulation of the thermodynamic properties of normal hydrogen

from. Supplement A (British Units), TN120A.

flame propagation in solids, 3882. formation and decay of atoms and small free radicals, 4662. gas discharge, reaction between copper and solid oxygen, 3742. glass Dewars for optical and other studies, 4673. helium, 4482. high pressures, thermodynamic properties of helium, 3356. infrared spectra of solid hydrocarbons, 3581. investigation of the anomaly in the response of

silicon semiconductor radiation detectors, 6813. mechanical properties of magnesium alloys, 3775. metal powders at, nuclear magnetic resonance, 5517.

optical measurements on thin films of condensed

gases, 3275. photolysis of ammonia in a solid matrix, 3711. quartz crystals, 3288C.

reaction of hydrogen atoms with solid propene,

3858.

solids, thermal radiation properties, 5822.

stainless steels, anomalous decrease of the elastic moduli, 6590. technical solids, specific heats and enthalpies, Mono.21.

tensile properties of copper and four bronzes, 3244. thermal conductivity of indium antimonide, 3354. thermal conductivity of solid H20 and D20, 5819. thermal expansion of technical solids. A compilation from the literature, Mono.29. thermodynamics of solid carbon dioxide solubility

in liquid solvents, 9114. thermophysical properties of oxygen at, bibliog- raphy, TN137 (PB161638).

300 °K and from 1 to 100 atmospheres, tabulation

of the thermodynamic properties of normal

hydrogen, TN120.

unkilned bone char, 4882. Low-alloy steel, NBS, M260-3; M260-10. Low-angle radiation from a monopole, measurements, J

65D6-167, 641 (1961). X-ray diffraction of crystalline nonoriented poly- ethylene and its relation to crystallization mechanisms, 4153. X-ray diffraction of fibrous polyethylene, 3606. Low-chromosphere model to the region of origin of the UV solar spectrum, 4202. Low-energy, electron-impact spectroscopy, determination of electronic energy levels of molecules,

5284. high-resolution electron spectrometer, 6115. photoproduction of neutral mesons from complex

nuclei, 3607. X-radiation, narrow-band spectra, 1411A. Low-radio frequency ground wave, TN60 (PB161561). model ionosphere reflection coefficients, TN69

(PB161570). Low-Z dye systems lor ionizing radiation measurement,

6839. Lower and middle ionosphere, distribution of electrons, 9071. atmosphere, radio thermal noise properties, 5785. atmospheric divergence on local electron density in the ionosphere, 3389. bounds for eigenvalues of Schrodinger's equation,

4157. 601
bounds for eigenvalues with application to the helium atom, 3242. bounds to eigenvalues, truncations in the method

of intermediate problems, J 65B2-48, 105

(1961). . bounds to eigenvalues using operator decompositions of the form B*B, 4731.

critical field, the Ginzburg-Landau theory of superconductivity, 5771. F region, bearing on the structure, results of a new method for obtaining ionospheric N(h)

profiles, 5678. F region, some results of a new method for ob- taining ionospheric N(h) profiles with bearing on the structure of, 6380. frequencies, radio and ionosphere propagation,

6454. Lowest ionosphere, height distribution of ratio of negative ion and electron densities, 6253. ionosphere, model, experimental observations and

theoretical calculations leading, 5350. ionosphere, use of VLF measurements for obtain- ing information on the, (especially during

solar flares), 8921A.

ionospheric properties by means of field measure- ments on sferics, a method for determination,

J 66D4-208, 463 (1962). LS coupling, 5828. Luminosity, maximum, height, auroral arc, 3836. Lunar, additional, influence on equatorial Es at Huancayo, 3130. communication, point-to-point, J 57D1-238, 5 (1963).

emission, linear polarization, J 69D12-605, 1613

(1965). mapping by coherent-pulse analysis, J 69D 12-620, 1667 (1965).

occulations of two discrete radio sources in 1963-

1964, TN184.

point-to-point communication, 5453. radio brightness distribution and certain properties

of its surface layer, measurements, J 69D12-

608, 1616 (1965).

reflection, J 66D3-190, 227 (1962). semi-diurnal tides in h'F and their influence on

transequatorial radio propagation, J 68D4-357,

419 (1964).

surface, decameter-wave radar results, J 69D12-619,

1659 (1965). surface radio communication, study, Mono.85.

theory reasserted, J 66D3-190, 227 (1962). theory reasserted—a rebuttal, J 67D1-237, 1 (1963).

tidal variations of sporadic E, 4737.

tidal variations, studying the, in the D region of the ionosphere by means of a very-low-fre- quency phase observations, 5713.

tide, enhancement, noon critical frequency of the F2 layer over the magnetic equator, J 66D5-220,

601 (1962). Luxembourg effect, TN325. Lyman alpha radiation ion atom collisions, 4861. M

M-nitrophenol from 5 to 50 deg, ionization constant, 5765. M2+ borates, crystallography, 6437. McAdam's (u,v), based on, uniform chromaticity trans- formation of the CIE diagram, lines of con- stant correlated color temperature, 5449. Machine, abstract shape recognition, 3961.

assisted and manual methods, patterns of thinking

in searching patent applications, 8934. glossary, structure, method for mechanical translation used by the NBS group, 5774. MAGIC-A, automatic graphics interface to a computer, 6840.

man, communication between, 4532. methods for finding characteristic roots of a matrix, 253A. model of recall, 3619. NBS 180 MeV, characteristics of "synchrotron

light," 6631. sorting of mail, address encoding—a study of the double-binary keyboard as a link, 5903. translation and information processing, bibliogra- phy of foreign developments, TN193.

translation of languages, recognition of clauses, 4266A.

translation, outlook, 3854. usable natural language material, availability, 3983. Machined tool steel bars (flats and squares), standard

stock sizes, R267-65. Machines, atomic beam, some causes in resonant fre- quency shifts, 5667; 5668. computing, index, 5403.

testing, fatigue, rotating beam, simple environ- mental chamber, 5164. Machinists' and bench-mounted vises, R229-63. Macromolecules, fibrous, dimensional changes, 4588.

fibrous: polyetheylene, dimensional changes in sys- tems, 3183. Macro-pores in leather as determined with a mercury

porosimeter, 5454. Macro-programming system for scientific computation, BOUMAC, TN203.

Macroscopic and microscopic energy loss distributions, 3643. deformations of alkylene sulfide crosslinked poly- caprolactam fibers, fiber structure, property

relationships, J 66A1-143, 77 (1962). measurements, determination of intermolecular potential functions, J 70A3-402, 259 (1966). MAGIC-A machine for automatic graphics interface to a computer, 6840. Magnesium alloy, stress-corrosion cracking of the AZ31B, J 65C3-67, 165 (1961).

alloys at low temperatures, mechanical properties, 3775.

cerous, nitrate, low temperature properties, 3613.

cerous, nitrate, magnetic susceptibility, 4160. cerous, nitrate, spin-lattice relaxation, 4305. manganese atoms in solid rare gas matrices, ab- sorption spectra, 3811A; 4343. oxide and beryllium oxide, thermodynamic properties from 298 to 1,200 °K, J 67A4-221, 325

(1963).

oxysulfate, preparation and heat of formation, J

68A6-313, 645 (1964).

zinc, cadmium, and mercury, spectra, 4686. Magnesium alloys at low temperatures, mechanical

properties, 3775.

fluoride, crystal imperfections, 6672.

oxide, experimental atomic scattering factors, 6749. Magnet, aluminum, cooled with liquid hydrogen, 4478.

application, cryogenic, pulsed refrigeration system,

6558.

coils, tape-wound, stress analysis, J 69C4-210, 287

(1965).

high-field liquid IL-cooled aluminum-wound, 5383. Magnetic, absolute, susceptibilities by Thorpe- Senftie method, 3957. absorption spectrum properties of osmium hexafluoride, 3960.

activity, function, intensity of [OI] 5577 in the subauroral region, 3840. amplifier for use with diode logic, 5137; 5876. amplifiers for digital computers, 2622A.

auroral pulsations, ionospheric absorption, 4138. bay, 4480. ceramics, microstructure, M257, Paper 5, p. 73. 602
chemical enhancement of perturbed lines in the

violet spectrum of CN, 5231.

crochets, short-wave fadeouts, and solar flares, 4301.

deflection systems, calculations of properties, 3989.

dipole, resonance characteristics of a corrugated

cylinder, 4281. disturbance as noted on oblique incidence iono- grams, 5314. disturbance variations, the conjugacy, 5740.

electric fields, slightly ionized air, 4626. equator during daylight hours, evidence of a stratified echoing region at 150 km in the vicinity, 6055. equator, following the high altitude nuclear explosion of July 9, 1962, observations of synchrotron radio noise, 5528. equator, ionospheric VHF scattering near, during

the International Geophysical Year, J 67D5-

280, 459 (1963). equator, nonreciprocity of propagation of VLF

radio waves, 5509.

fixed point for thermometry below 1 deg K, 5877.

high, field, electron scattering, 3524.

induction, arbitrary, radio wave reflections at a continuously stratified plasma with collisions proportional to energy, 5623. induction, arbitrary, reflection and transmission of radio waves at a continuously stratified plasma, J 66D1-176, 81 (1962).

internal, fields in nickel-rich nickel cobalt alloys, 4706.

latitude, high, some observations of short-duration cosmic noise absorption events in conjugate

regions, 6375.

losses, temperature dependence, 4974. low latitudes, possibility of detecting ionospheric

drifts from occurrence of speread F echoes, 3688. materials in wave-guides and cavities, geometrical

anisotropy, 3220. materials, selected, cryogenic behavior, J 69C3-203, 225 (1965).

materials, toroidal, 4424. meridian, reflection from a sharply bounded iono- sphere for VLF, J 65D5-151, 455 (1961). micropulsation storms, 4915. microsize, field probes with axial symmetry, 4766. natural electric fields, studies, J 64D4, 405 (1960). non-metallic materials, tables to facilitate the de- termination of the ferrimagnetic resonance

linewidth, TN173.

nuclear, resonance of Ni01 in dilute alloys of nickel

in cobalt, 4794.

nuclear, resonance in tantalum metal, 3674.

oscillating, dipole over a two layer ground, induction, 2597A. permeameter, equations for the radiofrequency, J 67C1-121, 69 (1963).

polarizability of a short right circular conducting

_ cylinder, J 64B4-35, 199 (1960). Magnetic activity in medium frequency sky wave propagation, 9017A.

constant and ampere, definition, 6677.

field, cosmic-ray cut-off rigidities and the earth's, 8990.

field, diffusion coefficients and microscopic fluctua- tions of a non-equilibrium plasma, 6866. moment, nuclear, Pr141 from the hyperfine structure

of doubly ionized praseodymium, 6894; 6895. resonance, nuclear, bulk nickel samples, 6896. Magnetic field, 4822.

axial, electromagnetic scattering by gyrotropic

cylinders, J 69D2-457, 227 (1965).

earth's, 4537.

earth's east-west effect on VLF mode transmission, J 65D1-102, 47 (1961).

energy levels of polarons, 6040. experiments on self-ionizing shock waves, 5353.

high, electron scattering, 3524. interplanetary, 4862. micropulsations and electron bremsstrahlung, 4158. nonlinear ambipolar diffusions of isothermal plas- mas, 6226. plasma studies, alouette ionic, 5908.

stochastic theory of diffusion in a plasma, 6405. transverse, propagation of reflected shock wave,

6316.

fields, 4628. high, pumped magnetometers and related experi- ments, 6275. induced, Helmholtz coils for reducing ac, 4399. steady, nuclear moment of Ni01 from nuclear res- onance studies, 5518. weak, by optical pumping methods, measurement,

3631A. Magnetic properties, acetinide elements alloys and compounds, 4738. ilmenite-hematite solid solutions, 6186.

iron oxide recording tape, experimental and theoretical investigation, 3539. materials, basic magnetic quantities and the measurement, Mono.47. some ilmenite hematite solid solutions, 5455. Magnetic properties and optical absorption spectrum of KVReCle, 4069; 4159. proton, resonance in clay minerals, 4866.

quantities, basic, measurement of the magnetic

properties of materials, Mono.47.

recording media, surfaces, electron microscopy

studies, 5329. recording tape, 4452. recording tape, wear, solubility of the binder, 5810. relaxation, nuclear, impurity nucleus in dilute fer- romagnetic alloys, 6232. spectroscopic properties of neptunium hexafluoride,

3884. storms, infrasonic pressure waves, 4701. study of the frozen products from the nitrogen microwave discharge, 3246. survey, world, international geophysical year, 4356. tape handler, disclosure, TN287.

tape recording and reproducing of atmospheric

noise with a wide dynamic range, 6187. thin film materials, survey, TN247.

torques and Coriolis effects on a magnetically sus- pended rotating sphere, J 67D5-285, 533

(1963).

transitions in lanthanon trichlorides, low temperature, 6185.

transitions, low temperature, rare-earth trichlorides, 6838. Magnetic resonance, determination of the nuclear mo- ment of tantalum-181 in KTa03 , 3620. nuclear, in lead alloys, 6233. nuclear, in RbMnF3 , 6897. nuclear, metal powders at low temperatures, 5517. Pb2u7

, nuclear, lead-indium alloys, knight-shifts and

line widths, 5439. spectroscopy, 4739. °"Ga and nGa in gallium-substituted yttrium iron garnet, nuclear, 6234.

solute nuclear, primary lead alloys, 9012. Magnetic susceptibilities, absolute method for the meas- urement of, in weak low-frequency fields, 5146.

dilution effects in low-spin e?4 complexes: osmium

(IV), 5456. Gouy and the Thorpe-Senftle methods, 4462. measurement, weak low-frequency fields, new absolute null method, 5501. Magnetic susceptibility, cerous magnesium nitrate, 4160.

electronic conductivity, oscillatory behavior, 3276. tetragonal titanium dioxide, 3621. 603
Magnetically confined arc, electron density measurements, 6728. retained evaporation mask, 5457. Magnetism, stellar and galactic, 5701. Magnetized electron-positron gas, electromagnetic wave

propagation and relativistic damping effects, 6727. Magneto-ionic media, capacitance of biconical antennas

;

elliptical cone capacitance, J 69D2-466, 291

(1965). electromagnetic radiation, J 64D5-90, 515 (1960). Magneto-ionic medium, electromagnetic waves along an

infinitely long and thin conducting wire, J

69D4-486, 503 (1965).

lossless, electromagnetic radiation from a magnetic

dipole with arbitrary orientation embedded, J 69D5-502, 671 (1965).

lossless, radiation at frequencies high relative to electron gyrofrequency, J 67D6-300, 707

(1963).

oscillating, collision-free, electromagnetic wave reflection, J 69D1-447, 111 (1965). unbounded, approximate full wave solution for low

frequency electromagnetic waves, J 66D1-178,

107 (1962). Magnetoionic phenomena of the Arctic E-region, 3774. phenomena permitting observation of valley minima

between the E and F regions in the artic, 3845. plasma columns, propagation characteristics, J 66D5-214, 543 (1962). propagation in inhomogeneous media, J 69D9-563, 1285 (1965) ; J 69D9-564, 1297 (1965). propagation phenomena in low- and very-low-radio- frequency waves reflected by the ionosphere, J

65D1-103, 53 (1961).

theory, effect of electron collisions on the formulas, J 69D2-454, 191 (1965). Magnetohydrodynamic turbulence, spectrum of station- nary homogeneous, 9032. Magnetometer, electron resonance, alternating magnetic

fields, 4628. Magnetometers, optically pumped, related experiments

in high magnetic fields, 6275. vibrating sample and coil, simple calibration tech- nique, 3944. Magnetoplasma, cold, dispersion of waves, from hy- dromagnetic to whistler frequencies, J 69D4-

484, 463 (1965).

compressible, dielectric, on the theory of reflection of electromagnetic waves from the interface, J 68D11-419, 1187 (1964).

halfspace, field of a horizontal magnetic dipole, J 67D5-282, 501 (1963).

horizontally stratified, propagation of vertically polarized electromagnetic waves, J 69D5-504,

693 (1965).

lossy, electromagnetic waves, TN205.

lossy, reflection of electromagnetic waves, J 68D1-

321, 95 (1964). overdense bounded, microwave propagation, 6210. propagation of microwaves through, and a possible method for determining the electron velocity

distribution, J 64D5-89, 509 (1960).

radiation from electrons, J 69D5-510, 741 (1965).

semi-infinite, surface waves along a perfectly con- ducting plane, J 69D2-451, 171 (1965). vacuum boundary, propagation of waves across, J 69D6-513, 807 (1965). Magnetoplasmas, oxygen, wave interaction, J 69D4-496,

617 (1965). Magnetoresistance, copper, longitudinal, 6834A.

transverse, high purity cluminum from 4 to 30 deg

K, 5831. Magnetoresistive effects in indium antimonide and in- dium arsenide, 3622. Magnetosonic wave, electric current and fluid spin created by the passage, 3515.

Magnetosphere boundary shape under solar wind pressure, shape, 6364. electron temperature, a measure of, nose whistler

dispersion, J 69D11-574, 1417 (1965). measuring plasma density, 5470.

outer, ionospheric effects of electrostatic fields generated, J 69D6-515, 827 (1965). propagation of hydromagnetic waves, J 69D8-545,

1133 (1965).

solar wind and its interaction, J 69D8-537, 1033

(1965). Magneto-telluric fields in the frequency range 0.03 to 7

cycles per kilosecond, J 66D4-210, 489 (1962) ; J 66D4-211, 495 (1962).

fields, theory, J 66D5-213, 509 (1962). Magnets, superconducting, 4328; 4329. Magnifications of a telescope, 4161. Magnified and squared VSWR responses for microwave

reflection coefficient measurements, 3247. voltage reflection coefficient, 4022; 4564. Magnitude, reflection coefficient versus return loss (hR = 20 log 10 table, TN72 (PB161573).

Mail, address encoding—study of the double-binary key- board as a link in machine-sorting, 5903. Separator control computer preliminary logical design, J 66C3-103, 271 (1962). Maintenance and establishment, unit of voltage at the NBS Boulder Laboratories, 5752.

electrical units at the NBS, 5458. marine electronics equipment by personnel not trained in electronic maintenance, 6841. standards, 6827. Major revisions made in new dry cell standard, 6842. Making precision voltage measurements on Zener diodes, 6188. stereoscopic drawings, simple method, 6561. Malononitrile, carbon suboxide and, in solid argon

matrices, infrared absorption spectra, 5407. Man and machine, communication between, 4532. made one-hop whistler mode signals at 18.6 kilo- cycles per second, variations in phase path,

5844. radiation effects, 5612. Management, safety levels in military inventory, 4904. Maneuver-spectrum fatique test, programmed, of air- craft beam specimens, 5598. Manganese-54, M260-9. Mm, the first spectrum, J 68A1-252, 9 (1964).

(II), nickel (II) and zinc (II) ions, and some symmetrically substituted ethylenediamines, complex formation, 5252.

zinc ferrites, two, disaccommodation of magnetic

spectra, J 69A2-339, 181 (1965). Manganous-sulfate-bath calibration of neutron sources, correction factor for fast neutron reactions on

sulfur and oxygen, 9063. Manned-machine, closed-loop, combined system, pro- gramming, 3725.

satellites, drag compensation and measurement

with: feasibility study, J 67C3-135, 247 (1963). Manning formula, hydraulics of circular sewers, 3398. Mannitol at 25 deg, standard potential of the silver- silver chloride electrode in 10 and 15%, 5799. Manpower, studies in scientific and engineering, 5709. Mans opinion, one, common language, 5543. Manual and machine-assisted methods, patterns of thinking in searching patent applications, 8934.

instruction, IQSY, world days, 5430. radioactivity procedures, H80. Many-body system, classical, cluster formulation of the exact equation for the evaluation, 5236. changes reflected in new dry cell standard, 3623. Mapping, ionospheric, TN337.

ionospheric, numerical methods, computer program, TN181.

604
numerical methods, handbook for CRPL ionospheric

predictions based, H90.

radiation beam, photographic film, 4871. Maps at 3 mm with 3-minute-of-arc resolution, J 69D12-

606, 1613 (1965). numerical, of ionospheric characteristics, method

for applying, J 66D6-225, 649 (1962). supplementary world, F2 critical frequencies and maximum usable frequency factors, TN2-2

(PB151361-2).

world, error in prediction of F2 maximum usable

frequencies, based on sunspot number, 3829. world, of F2 critical frequencies and maximum

usable frequency factors for use in making

ionospheric radio predictions, 3914. Marbles, 113 domestic, physical properties, 4838. Marine electronics equipment by personnel not trained

in electronic maintenance, 6841. Market, dental, plastics, 6292. Markoff inequalities, L,., J 69B3-146, 155 (1965). Markov chains, 4978.

chains, absorbing, statistical thermodynamics of polymer chains in a lattice, application of the

theory, 5925. chains and stochastic processes, selected biblio- graphy, 1930 to 1957, J 65B1-46, 61 (1961).

chains, use of Monte Carlo methods in computing,

J 64B4-36, 211 (1960).

process, fluorescence in comets, 4659.

processes, master equations, 6847. Markovian relaxation process, exact conditions for the preservation of a canonical distribution, 6056. Mars and Jupiter, recent observations, J 69D12-613,

1628 (1965). observation of, at 12.5-cm wavelength, J 69D12-

600, 1580 (1965). Venus at 70 cm wavelength, J 69D12-594, 1573

(1965). radar results, preliminary, J 69D12-611, 1625

(1965). Martensitic transformation in 18% Cr, 8% Ni steels, 5050. transformation on the low-temperature mechanical

stainless steel, 4992. transformation products and mechanical properties

of austenitic stainless steels at low temperatures, 4740. transformations, stress-induced, in 18Cr-8 Ni steel, 6406. Martian and Cytherian ionospheres, theoretical study,

5893. ionosphere, a theoretical study, 5170.

surface, radio evidence on the structure and composition, J 69D12-614, 1629 (1965). Maser, ammonia beam, standard of frequency, 4979. frequency stability, 3247A.

propagation, optical, atmospheric breakdown limitations, J 69D11-576, 1431 (1965). Masers, astrophysics, and geophysics, papers on the symposium on collision phenomena, TN124

(PB161625).

progress, J 64D6-96, 758 (1960). Mask, evaporation, magnetically retained, 5457. Masonry, effect of mortar properties on strength, Mono.36.

reinforced, building code requirements, H74. Mass and energy and a model of the loop prominence mechanism, source, 6836. attenuation coefficients, X-ray, TN284.

length calibration of the NBS, M248, p. 9. measurement process, TN288.

spectrograph, spark source, program, July 1964 to June 1965, TN286. Mass spectra, initial preparation and metastable transitions, 6137.

metasable transitions of H,S, HDS, and D,S, 5459. metastable transitions in, methane and the deutero- methanes, 5475. some deuteroethanes, J 65A2-89, 93 (1961).

statistical theory, 4200; 4561. theory, quasi-equilibrium, 5608. Mass spectrometer, observation of the products of ionic

collision processes and ion decomposition in a

linear, pulsed time-of-flight, 8905.

rate of the reaction NO + N, some heterogeneous

reactions observed in the ion source, J 65A5-

121, 411 (1961). thorium phosphide, 5080. Mass spectrometric, absolute, determination of the atomic weight of silver, 3413. gas analysis, TN273.

investigation of the high temperature reaction between nickel and chlorine, 6189. investigation of the nickel-bromine surface reaction, 6190. investigation of the yttrium-chlorine surface reaction, 6191. method, comments on, half-life of carbon-14, 6450. cyanogen and cyanoacetylenes, 4162.

effects of nitric oxide, J 69A3-348, 287 (1965).

isotopic exchange rate of oxygen atoms with 0_>, NO and N02 , 6192. NF„ NR,, N2F2, and N2F4 , J 65A5-120, 405 (1961). photoionization of acetylene and acetylene-A, 6193. photoionizaiton. I. Apparatus and initial observations on acetylene, acetylene-c??, benzene, and

benzene-d0 , J 68A4-289, 409 (1964).

photoionization, methane and methane-di, 6843. production of methylamine from azomethane, 6194. reaction of nitrogen atoms with ethylene, 6844. reactions of O atoms with NO and N02 , 6195. recombination of bromine and chlorine atoms on

Pyrex, 5460. thermal dissociation of N_-F4 , 4163. Mass spectrometry, 3625; 4741; 4742; 6196. spectrophotometric study of photoionization, H2 , HD, and D2 , 6845. spectrum and appearance potentials of tetrafluoro- hydrazene, 3624. spectrum of yttrium chloride vapor, 6846; 9085. standards for ultramicroanalysis, 4985. Masses, nuclidic and atomic weights, new scale, 4789. Master equation, 4950. generalized, for arbitrary initial states, 6774. generalized, theory of irreversible processes in plasmas—derivation of convergent kinetic equation, 6495. Master equations, generalized, identity of three, 6254. Markov processes, 6847. quantum-mechanical systems to all orders in the

density, 6102. Master files, TN285.

Matching problems, 6246. Matchings, optimal and degree-constrained subgraphs,

J 68B1-112, 27 (1964). Material, absorbent, dependence of absorption coeffi- cients upon the area, 5531. program, APPA-TAPPI reference, 5923. reference, effectiveness of a, in reducing the be- tween-laboratory variability of TAPPI, stand- ard T414 m-49, internal tearing resistance of paper, 5202. Materials, bituminous, summary of symposium on re- cent research, 6410. building finish, 4511. coated and uncoated cellulosic, effect of moisture

on surface flammability, 6714. conducting, self-heating, adiabatic apparatus, 946A.

dental, and therapeutic agents; work, composition and interrelation of international and national 605
organization engaged in the standardization,

6647. dental filling, gallium-palladium alloys, 6098.

dental, 1964-1965, guide, 6109.

dental, new developments, world-wide survey, 6884. denture base, clinical evaluation of complete den- tures made of eleven different types, 6637. denture base, organic, some physical properties, 5676.

effect of moisture on surface flammability of coated and uncoated cellulosic, 9076.

electrical properties, problems and prospects, 5594. filamentous, subjected to high speed tensile impact, 5212. granular, sulfur mortars, simple method for measuring the amount, 6562. homogeneous, infrared at elevated temperatures, preliminary studies directed toward determination of spectral absorption coefficients, 8954. magnetic properties, basic magnetic quantities and

the measurement, Mono.47. mechanical properties, 4757. mechanics, 4908. modern theories, 3653. photochromic, measurement of radiation dose dis- tributions, 6854. physical characteristics of agar impression, 9022. PLACEBO V, TN281.

properties, low temperature, 5675. proposed standard for measuring and reporting

physical properties of optical, 8964. recommended, practices for use with cryogenic propellants, 8985. research, ASTM, 4899.

roofing, projection x-ray microscopy, 5599.

selected, tensile and impact properties, from 20

to 300 °K, Mono.63.

semi-conductor, breakdown characteristics, 6616.

solid, reaction with calcium carbide, determining

moisture, 6690.

specification, definition of alginate impression, 9067. teaching: aspects of material behavior significant

to engineers, 4965. techniques, BSS2, Part 1. thin film, magnetic, survey, TN247.

toroidal magnetic, 4424. type filling, and cements, review of zinc oxide- eugenol, 6559. various, to hard tooth tissues, adhesive, bonding

of, 6581; 6582; 6583; 6584; 6585. x-ray spectrochemical analysis, cement and dental

alloys, 9145. Materials, standard. Issued by the NBS. A descriptive list with prices, M241.

Materials, standard reference: Accuracy of solution X-ray spectrometric analysis of copper-base

alloys, M260-5.

analysis of uranium concentrates at the National Bureau of Standards, M260-8.

catalog and price list of standard materials issued by the National Bureau of Standards, M260.

half lives of materials used in the preparation of standard reference materials of nineteen radioactive nuclides issued by the National Bureau

of Standards, M260-9. homogeneity characterization of NBS spectrometric standards II : cartridge brass and low-alloy

steel, M260-10.

metallographic characterization of an NBS spec- trometric low-alloy steel standard, M260-3. methods for the chemical analysis of NBS copper- base spectrochemical standards, M260-7. methods for the chemical analysis of white cast

iron standards, M260-6.

preparation of NBS copper-base spectrochemical

standards, M260-2.

preparation of NBS white cast iron spectrochemical standards, M260-1.

sources of information, M260-4.

Mathematical, analysis of self ignition, 5138. analysis of thermal environment in underground

shelters, 4743. approach to the determination of calibration sys- stem measurement error, M248, p. 91. approach, vicious cycle in secondary batteries, 5069. basis of the analogies to quantum field theory.

Statistical theory of electromagnetic waves in a fluctuating medium (II), Mono.79.

constants, AMS55.

functions with formulas, graphs, and mathematical

tables, handbook, AMS55.

models, survey, theory of reliability, 5169. programming models for selection of diets to mini- mize weighted radionuclide, 5461. representation and physical entities, J 65B4-60, 227 (1961).

services for standards laboratories, 4744.

special operators, H101.

statistics: application of information theory to analysis of contingency tables, J 66B4-87, 217

(1962).

statistics, index to the distributions, J 65B1-45, 23 (1961).

tables, formulas, and graphs, handbook of mathematical functions, AMS55.

Mathematical physics: A priori bounds in the first boundary value prob- lem in elasticity, J 65B4-66, 269 (1961). Physical entities and mathematical representation, J 65B4-60, 227 (1961). Pointwise bounds in the Cauchy problem of elastic plates, J 65B1-46, 61 (1961). Some boundary value problems involving plasma

media, J 65B2-53, 137 (1961). Transient solutions of the "baffled piston" problem, J 65B1-40, 1 (1961). Mathematics and experimental science, 5462. Mathieu functions, AMS55.

Mathieu's equation, characteristic formulation for nonperiodic solutions, J 69B1&2-141, 101 (1965). Matrices, angular momentum, 5091; 5092. convergence of the Rayleigh quotient iteration for the computation of characteristic roots and

vectors, 3273.

flash-photolysis spectroscopy, 6071. F.adamard, construction, 3332.

inert and reactive, infrared studies of photolysis of HN3 ; the infrared spectrum of NH, 6136.

integral, some computational problems, J 65B1-43,

15 (1961).

inversion, random walks, 370A. modulary groups of t X t, 5492. non-negative, some results, J 65B3-58, 205 (1961). nonsingular pairs, J 70B2-177, 155 (1966). normal, 3936. normal and EPr, 3270A.

normal, property L, note on pairs, 628A.

normal, problems in algebraic number theory, 1081A.

note on the condition, 94A.

one-parametric family, 2657A.

partitioned, a reduction formula, J 64B3-33, 171

(1960).

partitioned, special types, J 65B1-41, 7 (1961).

positive roots, bound for the P-condition number,

J 65B1-42, 13 (1961).

solid argon, infrared absorption spectra of carbon

suboxide and malononitrile, 5407.

solid, emission spectra of N2 , O;, and NO molecules

trapped, 3527. 606
spin-orbit interaction in the electron configuration np'n'p and np'n'p, J 67A6-239 555 (1963).

spin-orbit interaction in the electron configurations

p'd and p'd, J 69A5-361, 401 (1965). symmetric, generalized functions, 6773. two theorems, J 66B3-76, 91 (1962). Matrix algebra for calculating multicomponent mixtures, 3626. argon, spectrum of CF2 trapped, 4468. Boolean, equations in digital circuit design, 3152A.

characteristic roots, machine methods, 253A.

correlation, radio waves in the troposphere, 5265. density: monatomic molecules, 4719.

effects in the gaseous H atom-condensed olefin sys- tem; surface reaction-olefin diffusion model,

4745. eigenvalues, 4555. elements in the forbidden beta decay of Ce141

, 4164. elements, multipole, translation operator, 6877. graph, realizing the distance, J 70B2-176, 153

(1966).

Hilbert, computational problems, J 65B1-44, 19

(1961).

isolated hydrogen chloride, 4902.

isolated Nif2 and NiCL, spectra, 9026.

isolation infrared spectrum of the free radical CCO, 6848.

isolation infrared spectrum of the free radical NH2 , 6849.

isolation study of the photolysis of cyanogen azide. The infrared and ultiviolet spectra of the free

radical NCN, 6850.

isolation study of the reaction of CI atoms with CO. The infrared spectrum of the free radical C1CO, 6851.

isolation study of the reaction of F atoms with CO.

Infrared and ultraviolet spectrum of the free radical FCO, 6852. models of resource flows, aggregation, 6588. operations, H101.

powers, elements, 4957.

reciprocal kinetic energy formulation of isotopic

splitting, 721A.

relativistic, elements and the velocity dependence of nuclear potentials, 4275. row stochastic, upper bounds for the determinant, J 70B2-178, 157 (1966). skew-symmetric, theorem on automorphs, 6571.

solid, low temperatures, photolysis of ammonia,

3711. undercomposable, 5017. Matrix theory: bound for P-condition number matrices with

positive roots, J 65B1-42, 13 (1961). Computational problems concerning the Hilbert matrix, J 65B1-44, 19 (1961). Computational problems involving integral matrices, J 65B1-43, 15 (1961). Some results on non-negative matrices, J 65B3-58, 205 (1961).

Special types of partitioned matrices, J 65B1-

41, 7 (1961). Matroid, minimum partition of, into independent subsets, J 69B1&2-134, 67 (1965). transversals partition, J 69B3-145, 147 (1965). Matroids, lectures, J 69B1&2-131, 1 (1965). Menger's theory, J 69B1&2-132, 49 (1965). single-element extensions, J 69 B1&2-133, 55 (1965). Matter transport in solids, 6197. Maui, ESD, Hawaii, measurements, 6050. Maxima in the absorption of soft X-ray, interpretation,

6154. Maximization of circular coverage, black box, J 66B4-

86, 181 (1962). Maximum cellular Boolean functions and perfect Gray

codes, J 67B2-94, 77 (1963).

contrast, 22 ISCC-NBS centroid colors, 9120.

efficiency, two-arm waveguide junction, 5463. matching and a polyhedron with 0,1-vertices, J 69B1&2-143, 125 (1965). measurement, isothermal crystallization rate- temperature curve for polypentene-1, 5465. number of zeros in the powers of an undercomposable matrix, 5017. usable frequency factors and F2 critical frequencies, supplementary world maps, TN2-2

(PB151361-2). Maxwell and modern colorimetry, 4165.

bridge, low-impedance, 4424. Wien bridge circuit, calibration of inductance

standards, J 65C3-69, 183 (1961). Mayer density series for the pressure of an imperfect

gas, 3889. Mc/s band, 5-50, cosmic-noise survey at 65 degrees (N)

declination, 6664.

50, radar echoes form Venus, 6325. Meal, ivory-nut, 4474. Mean electron density variations of the quiet iono- sphere, TN40-3 to 40-7 (PB151399-3 to PB151399-7) and TN40-8 to 40-12. electron density variations of the quiet ionosphere. Summary of one year of data May 1959-April

1960, TN40-13 (PB151399-13).

first passage times, dissociation of diatomic molecules, 5464.

free path dependence and temperature of the Ginzburg-Landau parameter, 6425. motions in conditionally periodic separable sys- stems, J 65B2-52, 131 (1961). temporal variations of electron density at fixed height in the F region, 4806. Meaning of Betti's reciprocal theorem, J 67B2-95, 85

(1963).

"least" in least squares, 6461. Means, bounds on ratios, J 66B4-84, 169 (1962). Measurable sets and functions, J 69B1&2-140, 99 (1965); J 70B1-169, 83 (1966). study of plasma configurations, use of index of

refraction, 6521. Measure and weight, units, M233.

effects of roughness on the dose rate from fallout radiation, 5602.

electrical, standards and units, 6518.

precision, evaluation of the precision of analytical methods involving linear calibration curves,

6537. theory on measurable sets and functions, J

69B1&2-140, 99 (1965). Measured aperture field data, Fresnel zone diffraction

effects at 50 Gc/sec, 5367. cumulatitive distributions of the directive gain of an 18.3 meter diameter parabolic antenna at a frequency of 1040 Mc/s, 4746.

distributions of the instantaneous envelope ampli- tude and instantaneous frequency of carriers plus thermal and atmospheric noise, 3627.

electrical properties of snow and glacial ice, J 64D4-69, 357 (1960).

polarization techniques, corrosion rates of ferrous

alloys, (Fe, Cr and Fe-Cr-Si), 5268. rates for oxygen and nitrogen ion-molecule reactions of atmospheric importance, including 0

+ +N2NO+ +N, 9020. Measurement, absolute null method, magnetic susceptibilities in weak-low-frequency fields, 5146. temperature of microwave noise sources, 3414. W for polonium-210 alpha particles in air, nitro- gen, and carbon dioxide, 3958. W for polonium-210 alpha particles in nitrogen, argon, and an argon-methane mixture, 6577. Measurement of absorbed dose, construction of calo- rimeters, TN163.

neutrons, and of mixtures of neutrons and gamma

rays, H75. 607
Measurement, accuracy, 4925. planning for better, 8943.

Institute for Basic Standards role, 9081. Measurement, planning for better, 8943. Measurement, accurate length, meter bar with helium- neon laser, 5902. accurate, voltage ratios of inductive voltage dividers, 6427. aging of rubber vulcanizates, 3249. agreement among electrical standards laboratories, 4471; 5177. agreement comparisons, M248, p. 147. attenuation, analysis of the modulated subcarrier

technique, 6094. attenuation of radio signals by jungles, J 68D8-

388, 903 (1964).

basic magnetic quantities of the magnetic properties of materials, Mono.47.

bulk resistivity of semiconductor materials for

electron devices, bibliography, TN232.

calibration, precision

:

Electricity and electronics, H77, Vol. I. Heat and mechanics, H77, Vol. II. Optics, metrology, and radiation, H77, Vol. III. causes of walkway slipperiness, 3992. characteristics of farm milk tanks, 4166; 4748. characteristics of terrestrial radio noise, 5018.

color, and specification, 3159. comparative, intensity standards for high-energy,

3906. compensation, drag, with manned satellites: feasibility _ study, J 67C3-135, 247 (1963). complex time-frequency channel correlation function, J 68D10-416, 1161 (1964). computation of the fading rate of moon-reflected UHF signals, J 64D5-81, 455 (1960). continuous, density of flowing fluids, instrument,

5413. contrast in the aerial image, 4167. cross section, elastic scattering of slow electrons by hydrogen atoms, 5467. cryogenic liquid level, carbon resistors, TN200.

cryogenic temperature, platinum resistance ther- mometers. Is-fixed-point calibration adequate? TN147 (PB161648).

dielectric losses and surface conductivity of di- electrics in parallel plane test capacitors, J 68A2-267, 185 (1964).

direct of net positive suction head, 3186A.

effect of dilution upon pH, 1066A.

effect of moisture on heat transfer through insulated flat-roof constructions, 4168; 4749.

effective temperatures of microwave noise sources, 4750; 6198.

elastic constants on the solutions of problems in classical elasticity, J 67B3-100, 157 (1963). E' IV in the reciprocity calibration of condenser microphones, method, 3639.

electrical energy, exploding wire experiment, 4513. electron density and temperature in dense plasmas

by application of line broadening theory, 4751.

error, calibration system, mathematical approach

to the determination, M248, p. 91. errors—identification, detection, evaluation and ex- pression, M248, p. 103. ESR, metastable atomic nitrogen in heliumnitrogen afterglows, 6742. experimentation, 4649. flow and elastic i*ecovery, viscoelastometer, J 65C1-

51, 9 (1961).

flow, standardization, 6072A.

fundamentals, 5368.

gas, and other services of NBS, 5373. ground-base, of oxygen emission, method for deter- mination of tropospheric temperature structure, 6549. group velocity of 17.8 kc/s VLF radio waves,

J 69D9-557, 1235 (1965).

high frequency microvolt, 5384. high pressure, 5386; 5387.

hosiery, CS46-65. information from a file, M269, p. 161. improved, electric dipole moment of the hydroxyl

radical, 6791. interferometric, vibration amplitudes, 6229. international coordination, 4127. ionizing radiation, low atomic number dye systems, j 6837. ionizing radiation, low-Z dye systems, 6839. 2-Mc/s ionospheric absorption, at high latitudes, 3405. ionospheric drifts by means of a Doppler technique,

5019. irregular ionospheric refraction, satellites, 4382. laboratory, constant for N2+ +02 —

N

2+02+ at 300

deg. K, correction, 6659A.

laboratory, rate of the reaction N2+0 — NO+N at thermal energy, 6823. laboratory, rate of the reaction 0

++02 —»02+ +0 at thermal energy, 6824.

lasers for length, 6147.

lattice constants, neon isotopes in the temperature range 4-24°K, 4753; 5468.

line intensities and widths in the first overtone ; band of CO, 4590. linear photon polarization by pair production, 4752.

| long end standards, application of multiple beam j interference, 3433. longitudinal spherical aberration in the extra-axial region of lenses, J 66C3-95, 185 (1962). magnetic susceptibilities in weak low-frequency

fields, a new absolute null method, 5146; 5501. materials, initial developments: gage blocks of superior stability, J 64C3-38, 175 (1960). maximum, isothermal crystallization rate-tempera- | ture curve for polypentene-1, 5465. mechanical properties of ceramics, elevated temperatures, 3847. methods and standards, radio, URSI, report of U.S. Commission 1, J 64D6-96, 591 (1960). metric system, M232.

microscopic spheres, study of errors, 6566. microwave power, techniques employed at NBS,

4454. minority carrier lifetime in SiC by a novel electro- luminescent method, 4169. modulated photoelectric, vibration, 4779. moisture boundary layers, leaf transpiration with

a microwave refractometer, 5466. moisture in gas, humidity, 5391. multiple frequencies, derivation of electron density

profiles in the lower ionosphere using radio j absorption, 5279. National Bureau of Standards, central theme, 5026. neutron flux and spectra for physical and biologi- | cal applications, H72.

non-uniformities in semi-conductor sheet resistivity, four-point, probe, 6082. nuclear 2

4-pole deformation, possibility, 6258. 100 kc, oblique incidence pulse, 5525.

optic angle of mica, telescope, J 65C2-63, 125

(1961).

optical path difference, optical T-bench method,

5549. ozone in terms of its optical absorption, 3248. permeability, with coils, 3407. pH, 5772. pH of blood and other physiological media, standard, J 65A3-110, 267 (1961). phase velocity of VLF propagation in the earth- ionosphere waveguide, J 68D12-431, 1269

(1964). philosophy of the Pilot Program for mass calibration, TN288.
photochemical degradation in certain plastics by

color reactions with phenylenediamines, 6199. physical adsorption of vapors and the chemisorption of oxygen and silicon by the method of

ellipsometry, M256, p. 255. physical, and experiment design, 4837.

physical, basic standards, 3815. physical—challenge to science and engineering,

4228.

physical, pilot of progress, 4836.

precise, of the microwave absorption frequencies

of the oxygen molecule and the velocity of

light, 4238.

precise voltage-ratio, 8952.

precision, transformer ratios, 3857. procedures, simultaneous, precision, 5584. pure substance, 4249. R&D looks to the future, 6855.

rapid, small diameters, interfarometric instrument,

3972.

reliability, and prediction, theoretical problems,

3351.

reversible heat effect attending the passage of electric current across a liquid junction, 6020. roentgen, comparison of national standards, 3478. round-robin tests, ranking laboratories and evalu- ating methods, 6332.

services program of NBS, M248, p. 2. simultaneous, of enthalpy, specific heat, and resis- tivity of electrical conductors at high temperatures, high-speed (milliseconds) method, 6546. smoothness of paper, 3630. sound pressure, microphone diaphragm null method,

3642. standard, for blood pH and other physiological media, J 65A3-110, 267 (1961). standardization of dielectric samples, 4747. structure of strong shocks in helium-filled T tubes, 4170. surfaces and thin films, ellipsometry, M256.

system and its future, 8930. system, basis, 4983A.

systems, microwave attenuation, unmodulated twin

channel, 5195; 6598. technique, bolometer mount efficiency, J 65C2-62,

113 (1961).

techniques, psychrometric, in air conditioning

calorimetry, 6597. temperature, bibliography of, July 1960 to December 1962, Mono.27, Suppl. 1. temperature—January 1953 to June 1960, bibli- ography, Mono.27. temperatures of microwave noise sources, 4463. thermal conductivity, 3846. thermal radiation properties, 5306. thermocouple materials, 5079. thickness and refractive index of very thin films and the optical properties of surfaces by

ellipsometry, J 67A4-227, 363 (1963).

transition probability of O I multiplet, 4171, 6157A. vacuum and low pressume, bibliography and index, Mono.35.

velocity of light, 4437.

vertical distribution in twilight, 3753. very-high pressures, 6200. voltage by the use of the Stark effect, 5020. wave fronts without a reference standard, J 65B4-62; 239 (1961); J 66B1-70, 29 (1962). weak magnetic fields by optical pumping methods, 3631A. X and gamma radiation over a wide energy range, 152A. Measurement standards, 6856. attenuation, impedance and phase shift, 6396. low and medium peak pulse voltages, J 70C1-216,

13 (1966). personnel training and evaluation at Sandia Corporation, M248, p. 171.

Measurements, accurate dielectric, solid-disk specimens,

precise determination of the area of guarded

electrodes, 6304. accurate voltage, 30 megacycles per second, thermal

voltage converters, 3886.

activity of radioactive sources, H86.

arc spectroscopic, oscillator strength, using an

analog computer, 6231.

calibrations, electrical and radio, 1965, accuracy, TN262-A.

carbon resistance and helium vapor pressure, re- producibility, 3861. cavity resonator dielectric, of rod samples, 3458. comparative rate, single-pulse shock tube, 5958. comparative, standards for high-energy, 3906. conductivity (reciprocal resistivity) and DC di- electric conductance (reciprocal resistance),

6697. cryogenic engineering, temperature, 5727.

dielectric, errors, sample insertion hole in a cavity, 3534.

dielectric, international comparison, 6149.

dielectric, ultraglow frequency bridge, 3973. electromagnetic, 6024; 6487. electromagnetic, precision and accuracy, 4850. electromotive force, hydrogen-silver iodide cells, thermodynamics of aqueous solutions of hydriodic acid, 6504.

electron density, magnetically confined arc, 6728. electron energy loss, low temperatures, 3994.

electron energy loss, observation of optically for- bidden transitions in the continuum of the rare

gases, 6239.

ellipsometer, and calculation of reflection coeffi- cients from thin films, Fortran program for

analysis, TN242.

emittance, high-temperature, investigation of shal- low reference cavities, 5427. ESD Maui, Hawaii, 6050.

evolution, 4998. experiment design, physical, 5565. F-region, implication of diurnal, seasonal and geo- graphical variations in composition of high

atmosphere, 6255. ferrimagnetic resonance, oblate spheroids, TN221.

field, air infiltrated in ten electrically-heated houses, 5359.

field strength, J 64D6-96, 603 (1960).

field-strength, multipath field, 4654A.

flame spread, radiant panel flame-spread method,

3542. four-point probe, potential distribution in rectan- gular semiconductor bar, 6301. four-point probe resistivity, on thin, circular semi- conductor samples, correction tables, TN199.

fresh-water, field strength J 64D5-78, 435 (1960). high temperature, and standards: 1000-3000 deg

Centigrade, 6116. indentation-time, creep of pure-gum rubber vul- canizates, 4554. infrared, allene and allene-d4 , 6801. insulation resistance, 4702.

intensity standards for high energy bremsstrahlung, comparison, 3906. interpretation of pH, alcohol-water solvents, 5423.

ionization in active nitrogen, 4607.

isopiestic vapor pressure, ternary sysem, sorbitol- sodium chloride-water at 25 deg, 5432

liquid helium vapor pressure, 4885.

liquids at high pressures, simultaneous dielectric constant and volume, 9008. low-angle radiation from a monopole, J 65D6-167,

641 (1961). low temperature electrical, shielded coaxial leads, 3762. lower ionosphere, use of VLF, (especially during

solar flares ) , 8921A. 609
lunar radio brightness distribution and certain properties of its surface layer, J 69D12-608,

1616 (1965). matching with known standards, 3250. 50% methanol, reference buffer solutions for pH,

8987. millimeter and submillimeter wavelengths, J 68D5-

360, 538 (1964). NBS standards, organization of international inter- comparisons of radioactivity standards, 3853. neutron flux, and neutron doismetry, standards, 2776A.

obstacle gain, over Pikes Peak at 60 to 1,046 Mc,

1421A.

operating characteristics of Zener reference diodes, 6467.

optical distance, for the fluctuating atmospheric

index of refraction, correction, 6660.

optical, thin films of condensed gases at low temperatures, 3275. path loss, versus prediction for long distance tropo- spheric scatter circuits, 4217. permeability, reversible, air core primary radio frequency permeameter, 5186. pH, alcohol-water solvents, 4709. pH, electrodes, 4057. pH, papers by water extraction and glass electrode spot tests, 4005. physical in nuclear physics, TN283.

physical quantities by radio techniques, J 64D6-96, 605 (1960).

piston gage pressure, reduction of data, Mono.65. polarization, coatings formed on steel by cathodic

protection and their evaluation, 5237. polystyrene with three different equilibrium ultra- centrifuges, 4534.

precise frequency, power spectrum and its importance, 3856. precision electrical, course, M248, p. 181. precision electromagnetic, 5085. preliminary, interpreting, 4130. pressure, cryogenic systems, 5592. propagation and direction-finding instrumentation, J 65D3-127, 253 (1961). proton range, multiple scattering, 6218A.

pulsed and CW sinusoidal voltage and current,

6322. Q meter, 260 MHz, 5604.

radiation, physical quantities, 3714.

radiation, sources, standards, and detectors, 6398.

radio, light, theoretical study of sporadic-i? structure, TN87 (PB161588).

radio, sporadic-i? structure in the light, 4457. radiofrequency and microwave power, J 64D6-96,

755 (1960).

radiological, low-level radioactivity in materials and its relation, H86.

refining, by capacitance techniques, 4270.

reflection, coaxial systems, 4496. refractive index, 4259; 4272. reverberation chamber, sound absorption coeffi- cients, precision, 4240.

scintillation, optical depolarization over a terrestrial path, 6269.

sferics, ionospheric reflection coefficients at VLF,

2172A.

shock-heated plasmas, relative oscillator strengths

of some O II and O m lines, 6344. sound velocity, absolute temperatures, 4990. spectroscopic temperature, in a shock tube using CN as a thermometric molecule, 3782. spectrum of radio noise from 50 to 100 cycles per

second, J 64D4-76, 415 (1960). standardization of thermal emittance, 4935. status of sugar color and turbidity, 5700. stratospheric moisture, using infrared spectroscopy, 5704; 9042.

surface flammability, the radiant panel methods,

4960. system for accurate direct and alternating voltage, 6568; 6569. temperature below 1000 deg K, 5726. temperature, from line spectra, 4923. temperatures and densities in shock-heated hydro- gen and helium plasmas, 3631. thermal conductivity, 4792. thermal emittance, standardization, 4308. thermal radiation standards, 5075. thickness of thin films by optical means, from

Rayleigh and Drude to Langmuir, and the development of the present ellipsometer, M256,

p. 7. total electron content and the equivalent slab thick- ness of the midlatitude ionosphere, J 69D7-526,

929 (1965).

turbidity, sugar color, 4557. two-point and four-point probe resistivity, on rec- tangular bar-shaped semiconductor samples,

calculations, TN241.

two-terminal method, 4926. units for measuring variations, 903A.

units, radiological (ICRU) 1959, report of the

International Commission, H78. vacuum, interferometric oil manometer, 4569.

velocity of sound in helium gas, 4465. VHF ionospheric scatter system loss, EuropeanMediterranean area, TN230. VLF measurement, 5847. work function, field emitters with prescribed ori- entation, 9141. Zener diodes, making precision voltage, 6188. Measurements and standards, accuracy and precision, 5901A.

calibrations laboratories in the United States, J 68D5-360, 524 (1964). development in attenuation, J 64D6-96, 599 (1960). frequency and time interval, progress in the United

States during the last three years, J 64D6-96, 592 (1960). impedance, J 64D6-96, 598 (1960). microwave, 5488. microwave impedance, Mono.82. microwave surface impedance, skin depth, conductivity and Q, 3787.

noise, J 64D6-96, 601 (1960). plasma-physics and astrophysics, TN59 ( PB161560)

.

radio and microwave materials at the NBS, M248,

p. 55. real and abstract, corporate, M248, p. 139. sources, and detectors in radiation, 9038. tomorrow's facilities, 6508. Measurements, microwave, Doppler, ionization front

in cylindrical shock waves from exploding

wires, 4767. frequencies, effects of connectors and adapters on

accurate attenuation, 6011. NBS Electronic Calibration Center, 4768. phase shift, mismatch errors, 3650. power, and standards, international intercomparison, 6150. RF power, 6351.

reflection coefficient, magnified and squared VSWR

responses, 3247. standards, 5488. Measures and weights administration, H82.

aerosols, 6534. challenge to industry, 6533. conference report: 1960: M235

1961: M239

1962: M244

1963: M254

1964: M263

1965: M272. 610
control of packaged goods in the United States, development, 3826. helping consumers, 3229A.

household, M234.

index to reports, first to forty-fifth National Conferences, M243.

international, 6811. program, technical training, 5724. standards of the United States. A brief history, M247.

Measures of solar flares, systematic errors, 4714. Measuring, abrasion resistance of coatings, improved NBS abrasive jet method, 3574. adhesion of electrodeposited coatings, nodule method, 152B. amount of granular materials in sulfur mortars,

6562. attenuation constants of short sections of waveguide and the losses in waveguide joints, twochannel nulling method, 6573. cooling loads of refrigerated structures, heat sink method, 3229.

device, liquefied-gas flow, the Venturi tube, 3880.

directivity of a directional coupler using a sliding short-circuit and an adjustable sliding termination, 6201.

directivitv of directional couplers, 5976.

emissivities of metals in the infrared, method, J 66C3-104, 283 (1962). equipment, electronic distance, 3441.

ferric ion yield in the ferrous sulfate dosimeter,

4715. heat release of materials in building fires, 4237. impedance through an adapter without introducing

additional error, 6858.

instability of resistance strain gages at elevated temperatures, 4172; 5142. instruments, temperature, at the NBS, calibration, M248, p. 25. low absolute temperatures, 4472. microwave attenuation, 4427. microwave phase shifts, modulated subcarrier

technique, 3387. photographic strain, technique for use above 3,000 F, 4833. plasma density of the magnetosphere, 5470. polarization in the vacuum ultraviolet, method,

6550. polyester degradation due to weathering, 5129;

5239.

precision,^ personnel in the Air Force, selection, training, and evaluation, M248, p. 177. pressure, instruments at the NBS, static and dy- namic calibrations, 3792.

process, 3338. radio refractive index, Mono.92.

radio refractive index, survey of the techniques, TN99 (PB161600).

ratio of the specific heat of gas Cp/Cv, 776A.

reporting physical properties of optical materials,

8964. shear modulus from -424° to 70°F, 4425.

spectral emittance of diffusely reflecting specimens, avoiding errors from stray radiation, 6610. speed of sound in the sea, 4440. system, role of temperature, 5043. systems, complex insertion ratio, precision detector, 6305. technique for studying the cooling capacity of air- conditioning units, 5256A.

temperatures above 1000° K, accuracy and precision, 3812.

tensile strength, precision of methods, 5583. thermal conductivity of insulations, conductivedisk method, 4988. thermal emittance at hierh temperatures, methods

used at the NBS, 3641.

thermal emittance of ceramic oxides from 1200

degrees to 1800 degrees, 6863. thickness of chromium on the internal surface of small-bore tubes, gages, 3555. thickness of floor coverings, 4072.

tire treadwear, indoor tester, 3131. variations in measurements, units, 903A.

velocity of underwater sound, 1771A.

velocity of y-rays using the Mossbauer effect, 4763. water absorption of leather, 4793. weighing (commercial) devices, specifications for, (corrected through 1961), H44, 2d ed. Mechanical, basis of diffusion, 4755. behavior of polycrystalline ceramics, microstructure, Mono.59, p. 103. design of protected areas, 4756.

dielectric relaxation of crystalline polymers in relation to degree of crystallinity and morphology, 6202.

effects, related, of symmetry splitting of equivalent

sites in oxide crystals, J 67A4-216, 281 (1963).

electrical properties of polymers: elementary molecular approach, 2371A.

electrical relaxation, Th02 containing CaO, 5471. electromechanical properties of indium antimonide,

3632. engineering, expanding, 6156.

failures of metals in service, 1404A.

physical properties of electrodeposited copper,

8942. preparation and pH on the strength of glass-fiber paper, 998A. quantum, study of the hydrogen biomolecular ex- change reaction, 4870. quantum, systems to all orders in the density, generalized master equation, 6102. reading of characters and recognition, 4758. relaxation in polyethylene crystallized with various degrees of lamellar orientation, J 70A3-398,

225 (1966). resonance frequencies, method for determining,

3932. response function, 4421. response function, derivation of relaxation spec- trum representation, J 66A4-170, 349 (1962). shear degradation in concentrated polymer solutions, energy requirements, 3530. spectrograph shutter for extremely short exposure

times, 3633. strength of brittle poly-crystalline specimens on

porosity and grain size, 3175.

syntatic analysis of Russian, 3934. system in protective shelters, 4570.

technic, early strength, flow and dimensional changes obtained on amalgam prepared with

a standardized, 6003. thermoelectric stability of platinel II themocouples

in oxidizing atmospheres, 5081.

translation, method, used by NBS groun and the structure of its machine glossary, 5774. translation system, NBS, morphological classification, 6873. translation: U.S.—Japan Joint Conference, 6860. Mechanical properties, ceramics and their measurement

at elevated temperatures, 3847.

constitution of some hydrated aluminous cements,

effect of heat-treatment, 3192A.

four austenitic stainless steels at temperatures between 300° and 20°K, 4173. glass at elevated temperatures, 5472. high polymers, 5666; 6372. information services, TN289. magnesium alloys at low temperatures, 3775. materials, 4757. microstructure, M257, Paper 4, p. 41. stainless steel foil, 4401. Mechanically, syntactic integration, 5721. 611
Mechanics, equilibrium statistical, potential distribution method, 6302.

fluid, frequency-dependent transport coefficients, 6766.

heat, precision measurement and calibration, H77,

Vol. II. materials, 4908. quantum, application to relaxation, Liouville representation, 6179. quantum statistical, isotope effects, 4251.

statistical, irreversibility, 4314. thermodynamics, foundations, 3832; 3919. time-correlation functions and transport coeffi- cients in statistical, 9116. Mechanisms, color and ash removal by bone char, 3305. depolymerization of polytetrafluoroethylene with

pyrolytic and radiolytic initiation, J 70A2-

387, 115 (1966).

electrolytic deposition of titanium from fused salt media, 4360.

fatigue, studies of environmental effects, 5343. fracture, Mono.59, p. 79. inactivation of bacteriophages by metals, 6203.

ionic reaction, in the radiolysis of methane, .effect of additives, 5307; 6005. isothermal decompositioin of potassium perchlorate,

3634.

kinetics of the low-cubic to hexagonal phase trans- formation of the silver iodide, 6169.

light absorption by intersteller grains, 6556. loop prominence, source of mass and energy and a

model, 6836. photolysis of ethane at 1470 A, 6204. production of certain types of VLF emissions,

5139. sporadic E, 4889. Mechanistic model for the limits of auditory perception, 5878. Mechanization, library, of the current status of graphic

storage techniques, 6438. post office, 3718; 4236. Mechanized conversion of colorimetric data to Munsell

renotations, 3635. documentation: the logic behind a probabilistic interpretation, M269, p. 9. documentation, M269. p. 3. documentation, statistical association methods, M269.

information systems, M276.

Media, compressible plasma, radiation from sources, 6326. fracture in corrosive, 6085. magnetic recording, surfaces of, electron micro- scopy studies, 5329. nonaqueous, fibrous proteins, the melting (contraction) and recrystallization, 5773. Median, distribution, TN191.

power, hourly, and instantaneous power of received radio signals, families of distributions, J 67D6-

304, 753 (1963). sample, 4499. weighted, 4901A.

Medical applications, 6205. diagnosis, electronic computers, 3364.

diagnosis, reasoning foundations, 3292. X-ray protection up to three million volts, H76.

Medicine cabinets, steel, CS267-65. Medium, dissipative, of finite size on antenna measurement, effect, J 67D4-275, 397 (1963).

effects on indicator acid-base equilibria in a methanol-water solvent, salt effects, 6356.

effects on the dissociation of weak acids in methanol-water solvents at 25 °C, J 68A3-277, 305

(1964). frequency sky wave propagation, evidence of the

influence of long-term magnetic activity, 9017A.

guiding of whistlers in a homogeneous, J 64D5-88,

505 (1960).

semi-infinite dissipative scattering from a conduct- ing sphere, J 66D6-221, 607 (1962). Meeting at the Ohio State University, Columbus, Ohio,

of the Triple Commission for Spectroscopy, June 12, 1963, minutes, 6215. Electrochemical Society, Toronto, Canada, May 5, 1964, 6310. Tokyo, Japan, minutes of, the triple commission

for spectroscopy, 5491. Megacycles per second radio signal reflected from the moon, characteristics, J 64D4-65, 331 (1960). Megajoule energy storage, cryogenic coil, 6667. Megaroentgen dosimetry employing photographic film without processing, 3636. range, photograph dosimetry, 5562; 5563. Meixner's theorem in irreversible thermodynamics, in- validity, J 66B3-79, 101 (1962). Melting, contractility of feather keratin, 4759. (contraction) and recrystallization of fibrous proteins in nonaqueous media, 5773. molten polyethylene, determination of the propagation constants for ultrasonic waves, 5986;

5987. point of some metal oxides in a solar furnace, 3432. point temperatures, discrepancy in conversion, 5297. points of the metal oxides, compilation, Mono. 68. pressure equation for the hydrogens, 4760. process and the equilibrium melting temperature of

polychlorotrifluorethylene, J 66A1-137, 13 (1962) . properties, orthorhombic iV-paraffin, to very long chain lengths, 5000. temperature and change of lamellar thickness with

time for bulk polyethylene, J 67A5-233, 441

(1963) . temperature of natural rubber networks, 3848.

zone, analog simulation, 5915. Melts, rearrangement kinetics of the liquid-liquid immiscible microphases in alkali borosilicate, 8983. Membrane electromotive forces and flows of electrolytic solutes, definitions, J 66A1-144, 13 (1962).

potentials, effect of ion size, 6021.

potentials, electrode potentials in fused systems,

5321. Membranes, convex, asymptotic lower bounds for the fundamental frequency, 1267B. Memorandum on a procedure for obtaining spectral radiant intensities of tungsten filament lamps,

400-700^, 3251. Memorial to Sir Ronald Aylmer Fisher: 1890-1962,

4761. Memory and antireciprocity in the statistical approach

to irreversible thermodynamics, 5922.

effects in irreversible thermodynamics, 4174. Menger's theroem for matroids, J 69B1&2-132, 49

(1965). Menthanol (33.4 wt. %), aqueous, with and without added sodium chloride at 25 deg, standard potential of the silver-silver chloride electrode and activity coefficients of hydrochloric acid, 5689. Mercury-203, M260-9. Mercury, 4762. 198 and a path difference of 2000 mm, interference

fringes, 3583.

alloy ratio on the physical properties of amalgams,

4049. atomic beam for metrology, 3636A.

bubbler, triboluminescence, 3892A.

hydride, 4506. hydride, spectrum, hyperfine structure, 5395. intermediate state structure and surface energy,

3841. 612
2537-A line, hyperfine structure and isotope shifts, new interferometric method 5394. magnesium, zinc, cadmium, spectra, 4686. porosimeter, determination of macro-pores in leather, 5455. potassium crystals, vapor-phase growth kinetics, 6526.

tin system, an investigation of the constitution, J

67A1-195, 55 (1963). wavelength energy levels and pressure shifts, 5126. Meridian passage, central, ionospheric disturbance, re- lation of solar active regions, 5635. Meson and baryon resonances in relativistic SU(6),

6861. baryon scattering amplitudes, and SU (6)w photoproduction, 9053.

neutral, photoproduction complex nuclei, 4786. Mesons and protons, energy loss straggling; tabulation

of the Vavilov distribution, 6041.

neutral, low-energy photoproduction, complex nuclei, 3607. protons and alpha particles, penetration, 5556. Mesosphere and stratosphere, spectroscopic observations, 3781A.

polar winter, physical properties of, obtained from

low-frequency propagation and partial reflec- tion studies, J 68D12-436, 1319 (1964). subauroral latitudes, relativistic electron precipitation, 8989. Metabolism of Ca and Sr in the rat, comparative, 3161. Metaboric acid, HBO»(CI), heat of formation of the most stable form, 3563A.

acid, three crystalline forms of, heats of solution, transition, and formation, J 68A1-261, 127

(1964). Metal, alkali, with a rare gas, 4703.

distribution, 4921.

films, thin evaporated, characteristics, electrical re- sistance strain, 5319. monel, and platinum, experimental study of the backscattering of 5.3 meV alpha particles, 6592. normal, and a superconductor, 5098. oxides in a solar furnace, 3432. powder additives in evacuated-powder insulation, 3637. powders at low temperatures, nuclear magnetic re- sonance, 5517.

Schiff base coordination polymers, thermogravimetric study of some new transition, 9115.

solute, attainment of steady state and formation, speed of processes involved in electroplating, 5049.

surfaces, diffuse spectral reflectance, 6715; 6716. surfaces during fatigue stressing, gas evolution, 5372. surfaces, gas evolution, during fatigue stressing, 4669. tantalum, nuclear magnetic resonance, 3674. thermocouples, noble, 5677. vapors, alkali and organic halides, inhibition of opposed-jet methane-air diffusion flames, 5411. volumetric standards, testing, Mono.62.

Metallic oxidation, study by ellipsometry, M256, p. 131.

particles, overvoltage, 3122A.

solid, samples for X-ray spectrochemical analysis, 4961. surfaces, theory of frustrated total reflection, J

67A2-199, 115 (1963).

Metallized polymer film guard rings, 6862. Metallographic characterization of an NBS spectro- metric low-allov steel standard, J 68A4-282,

343 (1964); M260-3.

evaluations, quantitave, graphitic, microstructures,

5606. specimen preparation, 4325A.

Metallography, preservation of edge detail, 4857.

Metalloids, metals, and refractory oxides, electrophoretic deposition, 3526. Metallo-organic compounds, TN274.

Metallurgical microanalysis with the electron probe,

5473. reactions and their effect on the mechanical properties of 17-7 pU stainless steel, identification, J 66C2-92, 113 (1962). Metals, adhesive bonded, function of the rate of loading, tensile shear strength, 4341.

alloys, commercial, low-temperature transport

properties, 3615; 3616; 3617. application of the principle of corresponding states, correlation and prediction of thermal conductivity, 6662. deposition, vapour phase and similarity of the

process to electrodeposition, 4029.

effect of reactions with the atmosphere during fatigue, 6009A.

electrodeposition, nonaqueous media, 4056. fatigue failure, importance of environment, 5761.

film growth by ellipsometry, M256, p. 157. infrared, method of measuring emissivities, J 66C3-

104, 283 (1962).

light, in the Metallurgy Division, NBS, research,

4279. low melting point, 3400. mechanism of inactivation of bacteriophages, 6203. metalloids, and refractory oxides, electrophoretic

deposition, 3526. metalworking, definitions relating, 4024.

oxidation, salts, 4824. projection microradiography, 3288. radiochemical, separations, applications of vacuum

distillation, 5665. rare earth, high-pressure, allotrophy, 5907.

real, comments on surface characterization, 6642. refractory, coatings, anodic treatment and by vapor

deposition, 4000.

service, mechanical failures, 1404A. shadow casting, 3901.

stress-corrosion cracking, 4441 ; 9044. thermal diffusion of substitutional impurities, 9109.

three, and eleven gases, comparison of two melt- ing-pressure equations constrained to the triple point, TN183.

ultrasounds induce flaking of ceramics, 5100. Metalworking and metals, definitions, 4024. Metamerism, degree, 6681. Metastable atom, oxvgen, production through photode- tachment, 8932. atomic nitrogen in helium-nitrogen afterglows, ESR measurement, 6742.

levels, continuum and the independent particle model, 5474; 6206. nitrogen, xenon photosensitized formation, 9144. oxygen molecules on ozone and airglow, 6451. transitions and initial preparation in mass spectra, 6137.

transitions, and mass spectra of ELS, HDS, and

D*S, 5459. transitions in mass spectra of methane and the deuteromethanes, 5475. Meteor-burst, communication, elementary considerations

of the effects of multipath propagation, J

64D5-86, 495 (1960). communication, loss in channel capacity resulting from starting delay, J 64D5-85, 493 (1960). communication system, NBS, 3342. NBS, propagation, project, TN86 (PB161587).

propagation at 41 Mc/s over a 1,295-km path, high

resolution pulse measurements, J 66D3-193,

249 (1962). Meteor-echoes, long-duration, based on atmospheric

turbulence with experimental confirmation, 1606A. Meteor show ionization, VLF phase perturbations, 4408. 613
Meteor trails, amplitude distribution for radio signals

reflected, J 64D5-80, 449 (1960); J 66D3-192,

241 (1962).

persistent, 1419A.

radio propagation by reflection, 6329. Meteoric line densities and attachment rates, experi- mental determination, J 68D10-408, 1079

(1964). radio wave propagation, bibliography, TN94

(PB161595).

Meteorological parameter for radioclimatological purposes, J 68D7-383, 851 (1964). radio study, 5159. refractometer, free-balloon borne, J 65D2-112, 149

(1961). Meteorology, radio, J 64D6-96, 621 (1960); Mono.92;

8974.

radio, applications of the molecular refractivity, 3140.

radio, aspects, 5205. synoptic radio, TN98.

Meteors, large, echoes from, the theoretical heights and

durations, J 68D10-407, 1067 (1964). Meter bar with helium-neon laser, accurate length measurement, 5902. frequency pulse, TN237; p. 1. image gloss, 3125. microwave impedance, capable of high accuracy,

3386. phase, precision, 4851. Q, measurements up to 260 MHz, 5604.

quality, use of a Venturi tube, 5064. rotary positive displacement, 5813. systems of units, national and international aspects, wave length definition, 3369. wavelength definition, 2838A.

Metering, code for electricity, 6638. Meters, microwave power, transfer instrument for the intercomparison, 3410. phase, testing, 4831.

slow-flow, fuel oil distribution systems, TN196.

Methacrylate-styrene copolymers, composition and irra- diation on the glass transition temperature of methyl, 6012. Methane-air opposed-jet diffusion flames, effects of

alkali metal vapors and organic halides, inhibition, 5411. coordination, bis (8-hydroxy-5-quinolyl) , polymers, thermal stability, 6502. deuteromethanes, metastable transitions in mass

spectra, 5475.

effect of additives on the ionic reaction mechanism

in the radiolysis, 5307; 6005.

effect of pressure in the radiolysis and photolysis, 6009. flame speed, effect of perchloryl fluoride additions, J 65A6-134, 513 (1961). flame speed, effect of some halogenated hydrocarbons, J 70A2-388, 133 (1966). methane-d., 6843. nitrogen, adsorption of, on silica gel, synthetic zeolite and charcoal, 5732. nitrogen, comparison of the low temperature adsorption, hydrogen gas on three different adsorbents, 5130. nu vibration, condensed oxygen, nitrogen, 5516.

radiolysis, 5624.

silica gel at low temperatures, adsorption, 4345.

solid, ammonia, and ice in the vacuum ultraviolet, absorption spectra, 3416.

solid phase, direct and inert-gas-sensitized radiolysis and photolysis, 6696. water, deuterium isotope effect in vacuum-ultraviolet absorption coefficients, 6691. Methanol-benzene mixtures, tetrabutylammonium bro- mide. The ion pair-quadrupole equilibrium,

3842.

Methanol, reference buffer solutions for pH measure- ments in 50%, 8987. water solvent, salt effects and medium effects on

indicator acid-base equilibria, 6356. water solvents, dissociation of acids, J 68A3-277, 305 (1964). water solvents, interpretation of potentiometric ti- trations of weak acids, 6155. water solvents, standardization of analytical data

obtained with the silver-silver chloride elec- trode, 9036. 50 wt. %, from 10 to 40 deg, standard electromotive force of the hydrogen-silver chloride cell and the thermodynamics of solutions of hydrochloric acid, 6390. Method, absolute null, measurement of magnetic susceptibilities in weak low-frequency fields, 5501. adjusting force constants and its application to H2 0, KUCO, CH2 C1, and their deuterated molecules, 6864.

air-gap, precise determination of the dielectric constant and loss angle of solid-disk specimens,

6423. automatic, for obtaining data in the Weissfloch- Feenberg node-shift technique, 6591. averages, 4901A.

calibrating a standard volt box, J 67C1-114, 1 (1963).

colorimetric, measuring polyester degradation due

to weathering, 5239. comments on mass-spectrometric, half-life of car- bon-14, 6450. comparing, two nearly equal potentials directly in parts per million, 5476. computation of the error function of a complex

variable, 6551. controlling the effect of resistance in the link cir- cuit of the Thomson or Kelvin double bridge, J 64C4-44, 267 (1960).

cooling head-on photomultipliers, 3252. cutting threads in glass and ceramic tubes, 3384. determination of height and geographical position of an auroral arc from one observing station, 5140. determination of lower ionosphere properties by means of field measurements on sferics, J

66D4-208, 463 (1962). determination of tropospheric temperature struc- ture from ground-based measurement of oxy- gen emission, 6549. determining bond strength, 6584. determining elastic constants of a cubic crystal from velocity measurements in a single arbi- trary direction; application to SrTi03 , J 67A2-

205, 193 (1963). determining mechanical resonance frequencies and

for calculating elastic moduli from these fre- quencies, 3932.

efficiently providing low temperature liquids on a

large scale to an accelerated experimental pro- gram, 3383. equipment for measuring thermal emittance of ceramic oxides from 1200 degrees to 1800 degrees, 6863. estimating, experimental, F-region collision fre- quencies, 5193. evaluating protection afforded by structures against

fallout radiation, 3638. evaluating the clinical effect of warping a denture,

3253. examples relating to the simplex, 6058.

finding, density expansion of transport coefficients of gases, 5477. freezing zirconium of common impurities and for preparing zirconium sulfate and oxide, 482A.

high-speed (milliseconds), simultaneous measure- ment of enthalpy, specific heat, and resistivity 614
of electrical conductors at high temperatures,

6546. improving isolation in multi-channel waveguide

systems, 3385. interferometric, new, hyperfine structure and iso- tope shifts in the 2537-A line of mercury, 5394. introducing non-thermal unsaturation, simple; action of zinc dust and sodium iodide in N, Ndimenthylformamide on contiguous, secondary

sulfonyloxy groups, 6580A.

Kjedahl, determination of hide substance in leather, 6685.

least squares, precursors to residuals, minimum

sums, 4901A.

localized variation of the paths of two paraxial

rays, 5141. making stereoscopic drawings, 6561. mechanical translation used by the NBS group and

the structure of its machine glossary, 5774. obtaining a range of current densities with a resistive cathode, 6865. obtaining ionospheric Ar (/i) profiles with a bearing

on the structure of the lower F region, 6380. obtaining the parameters of electron-density profiles from topside ionograms, TN315.

optical T-bench, measurement of optical path differ- ence, 5549.

potential distribution, equilibrium statistical mechanics, 6302.

results of a new, obtaining ionospheric N(h) profiles and their bearing on the structure of the lower F regions, 5678.

satellite orbits, spheroidal, 5797.

self-calibration of attenuation-measuring systems, J 66C1-82, 13 (1962). separation of titanium, zirconium, iron and alumi- num from one another and for their subse- quent determination, J 64A6-79, 535 (1960).

single decoding, cyclic codes, a combinatorial problem, 5867. study of vector velocity distribution of low density molecular beams, 3933. synthesis of highly fluorinated styrene, synthesis of perfluorostyrene and (2, 2-difluorovinyl) per- fluorobensene (hydroheptafluorostyrene) , 5723. synthesizing nonuniformly spaced arrays, 6603.

test, comments on application of experimental design, 5243. two-channel nulling, for measuring attenuation

constants of short sections of waveguide and

the losses in waveguide joints, 6573. Method for measuring, amount of granular materials

in sulfur mortars, 6562.

directivity of directional couplers, correction, 5976.

emissivities in metals in the infrared, J 66C3-104, 283 (1962).

instability of resistance strain gages at elevated temperatures, 5142. polarization in the vacuum ultraviolet, 6550. polyester degradation due to weathering, 5129. shear modulus from -424° to 70° F, 4425. Method, measurement of E' II' in the reciprocity cali- bration of condenser microphones, 3639. measurement of Magnetic susceptibilities in weak

low-frequency fields, 5146; 5501. Methods, analytical, involving linear calibration curves, evaluation of the precision of; which measure

of precision, 6537. applying numerical maps of ionospheric characteristics, J 66D5-225, 649 (1962). chemical analysis of NBS copper-base spectrochemical standards, M260-7.

chemical analysis of white cast iron standards, M260-6.

correction, systematic atmospheric refraction er- rors of baseline-type radio tracking systems,

6418.

dynamic calibration of pressure transducers, Mono.67.

electrochemical, 6723. estimating loudness, 9049. evaluating radiological equipment and materials, H89.

evaluation of rotating diamond-abrasive dental in- struments, 2197A.

flame-fusion, dislocations and stacking faults in rutile crystals, 6701.

four, determining temperature sensitivity of strain gages at elevated temperatures, 6763. nuclear orientation, 3640.

optical, 4819. patterns of thinking in searching patent applications by manual and machine-assisted, 8934. predicting atmospheric bending of radio rays, J

64D5-84, 487 (1960).

principles of sampling, 3285. radiochemical, analysis (report on Salzburg confer- ence), 8976. ranking laboratories of measurement in roundrobin tests, evaluating, 6332. representation of diurnal and geographic variations

of ionospheric data, 8993. separation, distillation, analytical chemistry, 5301. standards, radio measurement, URSI, report of U.S. Commission 1, J 64D6-96, 591 (1960). techniques of low and very low frequency monitor- ing at Boulder Laboratories, 4175.

testing, 5481. theory of optical pyrometry, Mono.41. Methods, analysis, design of cryogenic equipment and

processes, 6216.

calibration, airglow photometers at Fritz Peak

Observatory, 5480. cement, 5478. place of radiochemical: today and tomorrow, 9090. potentiometers by resistance bridge, 5938. rubber and related products, 5479. universal ratio sets, modifications, TN220.

Methods of measuring, precision, tensile strength, 5583.

resistivities of anisotropic conducting media in situ, J 66C3-98, 217 (1962). thermal emittance at high temperatures, used at National Bureau of Standards, 3641.

velocity of X-rays using the Mossbauer effect, 4763. Methyl, acetate and acetone, gamma-ray radiolysis, 4350. bromide additions on the flame speed of methane,

effect, J 67A1-196, 71 (1963). bromide and trifluoromethyl bromide applied to the

fuel and oxygen sides of the reaction zone, in- hibition of diffusion flames, J 65A4-118, 389

(1961).

iodide, gas-phase photolysis. Reactions of hot methyl radicals with added organic compounds, 6099. methacrvlate copolymers by gas chromatography,

3427. methyacrylate-styrene copolymers, effects of composition and irradiation on the glass transition temperature, 6012. phosphonothioate, 0,0'-diethyl, and conjugative

properties of the P=S bond, 3874. Methyl radicals, dimethylmercury, 6472._ hot, added organic compounds, reactions. Gas-phase

photolysis of methyl iodide, 6099.

kinetic isotope effect in, ethane, ethane-do, ethane 1, 1, 1-cU, 3599. reactions of, in the solid, liquid, and gas-phase

photolysis of dimenthylmercury, 5787. reactions of, with aromatic compounds, 5788; 5789. Methyl-ck, radicals with isobutane, isobutane-2-d and

propane, 4881. Methylamine from azomethane, mass spectrometric study of the production, 6194. 615
Methyldifluoroarsine, microwave spectrum, 4770. Methylene groups in determination of disulfide and

methylene sulfide crosslinks in polycaprolactam

fibers, J 66A3-159, 251 (1962). Methylphosphonyl chlorofluoride, thermodynamic properties of, from 15 to 335 °K, J 68A4-285, 367

(1964).

dichloride, thermodynamic properties of, from 15

to 335 °K, J 68A4-285, 367 (1964).

difluoride, thermodynamic properties of, from 15

to 335 °K, J 68A4-285, 367 (1964).

dihalides, thermodynamic properties of, from 15 to 335 °K, J 68A4-285, 367 (1964). Methylpicric acid in water at 25 C, spectrophotometric determination of the ionization constant, J 64A6-78, 533 (1960).

Methylsilylacetylene, microwave spectrum and barrier

to internal rotation, 6869. Metric system of measurement, M232.

Metrics, convex, J 69B3-150, 175 (1965).

Metrologists, educating, 6712. Metrology, error analysis, M248, p. 93. mercury atomic beam, 3636A. modern dimensional, some fundamentals, 3773.

optics, and radiation, precision measurement and

calibration, H77, Vol. III. programs in the school of engineering of the George Washington University, M248, p. 199. related to microminiaturization, 5482. MeV machine, NBS 180, characteristics of "synchroton

light," 6631. MHz, 2450, microwave discharge cavities, 6868. Q meter measurements up to 260, 5604. Mica cleaved in moist air, dielectric behavior of film formed, J 68A2-266, 173 (1964). muscovite sheet, thermal behavior, J 67A6-244, 585

(1963).

synthetic, 3804. Michelson interferometer, construction of, for Fourier

spectroscopy, J 69C1-179, 5 (1965). Micro-adjuster providing purely rectilinear motion, TN253, p. 2. Microanalysis, metallurgical, with the electron probe,

5473. techniques, optical spectrometry, X-ray fluorescence spectrometry, and electron probe, June 1964 to June 1965, TN272.

Microanalytical techniques, M260-10.

Microbalance techniques for high temperature application, 4176; 5483. tungsten helical-spring, 5097. vacuum, studies of electron tube materials, 3349. vacuum system, 5109. vacuum, techniques, 4712; 4985; 5107; 5109. Microchemical analysis, TN273.

balances, response of to changes in relative humidity, J 64C4-47, 281 (1960). Microdiffraction photographs, Kossel, exposure time relations, J 69C3-201, 213 (1965). Microelectrophoresis cell for asphaltenes in nitromethane, velocity-depth relationship, 5845. Microfilm, archival, summary of current research, TN261.

electronic scanners, progress report on FOSDIC

III, 3265A.

processed, stability of residual thiosulfate, J 67C1-

115, 15 (1963).

silver-gelatin type in roll form, current research on

preservation of archival records, J 69A5-359,

385 (1965). Microgrammar PLACEBO IV, TN255. PLACEBO V, TN281.

Microgrammars, prerequisite to the utility, TN258.

Micromanometers, rotational, J 66C4-112, 363 (1962). Micrometer-electro, guard-ring, holder for solid-disk di- electric specimens, 4280.

microscopical methods for measuring thickness of

floor coverings, 4072. Microminiaturization processes, metrology, 5482. Micron H20 band, computed transmission spectra for

2.7, 5254. Microphases in alkali borosilicate melts, rearrangement

kinetics of the liquid-liquid immiscible, 8983. Microphone diaphragm null method for sound pressure measurement, 3642. Microphones, carrier operated and other reversible transducers, 3453. condenser, method for measurement of E' II' in the

reciprocity calibration, 3639.

free-field correction for condenser, 6089. pressure calibration, small couplers, hydrogen re- tention system, 5393. vibration pickups, and earphones, calibration, 6621. Microphotograph, information, 8915. Micropulsation experiment at conjugate points, prelim- inary results, J 60D8-543, 1107 (1965). frequency range, studies in geomagnetic, 5710. magnetic, storms, 4915.

pearls, dynamic spectral characteristics, 6711. Micropulsations and electron bremsstrahlung, magnetic

field, 4158. Microradiography, production, metals, 3288. Microscope, electronic scanning for a spectrographic

plate comparator, J 65C1-50, 1 (1961).

field ion, observation with the: condensation of tungsten on tungsten in atomic detail, 6651.

field emission, observations of carbon monoxide and oxygen on tantalum, 6240. specimens, AL03 electron, jet thinning devices, 6168. Microscopic-astrophysics and the development of astro- physical laboratories, 6207. Microscopic detection of porosity, 3339. examination of nickel coatings after atmospheric

corrosion, 4366. fluctuations and diffusion coefficients of a non-equi- librium plasma in a magnetic field, 6866. impedance meter capable of high accuracy, 3386. macroscopic energy loss distributions, 3643. spheres, study of errors in the measurement, 6566. theory: ionospheric cross modulation, J 69D1-442,

59 (1965). Microscopical and micrometer methods for measuring

thickness of floor coverings, 4072. studies of failure in polymers, 3254. Microscopy, 4764.

color phenomena in polymer failure, 4765.

color phenomena in polymer fracture, 5484. high pressure, of the silver and cuprous halides, J 68A1-257, 97 (1964). NBS, resolution test chart, 5498. paper, soft X-ray, 6367. phase and amplitude contrast, in partially coher- ent light, J 69C3-200, 199 (1965). polymers, J 67A6-249, 625 (1963). polymers by point profection, X-ray, 5862. projection X-ray, roofing material, 5599.

resolution test chart, NBS, 5498. transmission electron, displacement of dislocation images, 6703. X-ray, polymers by point profection, 5862. Microscopy, electron, diffraction of aluminum oxide whiskers, 6729.

diffraction of synthetic corundum crystals, 6730.

historical note on the first years of, 3266A.

studies, surfaces of magnetic recording media, 5329. transmission, 4578. Micro-second range, rotating shutter for time-resolved

spectroscopy, 9001. Microsize magnetic field probes with axial symmetry,

4766. heat treatment, M257, Paper 3, p. 29. magnetic ceramics, M257, Paper 5, p. 73. 616
mechanical behavior of polycrystalline ceramics, Mono.59, p. 103. mechanical properties, M257, Paper 4, p. 41. observation, M257, Paper 2, p. 15. porcelain, M257, Paper 6, p. 93. thickness, electrodeposited copper, relation of partial (110) pole figure, 5634. Microstructures, digital computer, direct quantitave

analysis, 5992. geometry, M257, Paper 1, p. 1. graphitic, quantitative metallographic, evaluations,

5606. Microtechnique for the infrared study of solids, dia- monds and sapphires as cell materials, 4177. Microtests and standard for international rubber hardness, 4535. Microvolt, HF measurements, 5384. Microvolumetric apparatus, coulometric calibration, J

70C1-214, 1 (1966). Microwave absorption, electric dipole moment of NO in compressed gases, 4526; 5952. compressed oxygen, 3644. frequencies of the oxygen molecule and the velocity of light, 4238. gaseous state, nonresonant, 3266. nonresonant, vapor, dipole moment of PCh F, 6695. relaxation frequency at elevated pressures, 3670.

transition from resonant to non-resonant line shape,

9119. trimethylamine-trimethylboron addition complex,

3255. Microwave, attenuation measurement system, unmodulated twin channel, 5195 ; 6598. attenuation measuring, 4427. backscatter, reactive loading of arbitrarily illumi- nated cylinders to minimize, J 69D11-581, 1481

(1965). beam entering a linearly graded plasma, on the point of emergence, J 69D2-452, 177 (1965).

bolometric, power calibration techniques at NBS,

4508. calibration systems, M248, p. 49. calibration techniques at the NBS, 6209.

cavity, linear tuning, 6831A.

circuits, non-reciprocity and time-reversal, 3668. detector diodes, 4079. discharge cavities operating at 2450 MHz, 6868. discharge in diborane, exploratory study, by low

temperature X-ray diffraction techniques, of diobrane and the products, 3208. Doppler measurements of the ionization front in cylindrical shock waves from exploding wires,

4767.

frequencies, effects of connectors and adapters on

accurate attenuation measurements, 6011.

frequencies, two, phase and amplitude diversity in over-water transmissions, TN307.

gas interactions, 4680. high frequency calibration services of the National Bureau of Standards, 6208; 6867. impedance measurements and standards, Mono.82. infrared spectra of C1CN, 6799.

line-of-sight paths, fading, 6067.

line of sight tropospheric propagation paths and

associated subjects, bibliography, TN302.

lines of oxygen and their relationship to the ther- mal noise emission spectrum of the atmosphere,

9139.

links, ground-to-ground, radio pat?, length stability, TN219.

measurements and standards, 5488. measurements in NBS Electronic Calibration Center, 4768. nitrogen, discharge, magnetic study of the frozen

products, 3246. observations of Venus, an analysis, J 69D12-602,

1583 (1965).

phase measurement system, evaluation, J 69C1-186, 55 (1965). phase shift equations, some basic, J 68D4-352, 349

(1964). phase shift measurements, mismatch errors, 3650. phase shifter, differential, 5872. phase shifter, error analysis of a standard, J

64C4-47, 281 (1960). phase shifts, modulated subcarrier technique of measuring, 3387. power measurements and standards, international intercomparison, 6150. power measurements, radiofrequency, J 64D6-96, 596 (1960). power-measurement techniques employed at NBS,

4454. power meters, transfer instrument for the inter- comparison, 3410.

profession, standards, 4938. propagation in an overdense bounded magnetoplasma, 6210. properties of ferrites, J 64D6-96, 755 (1960). RF power measurements, 6351. radio materials at the NBS, measurements and

standards, M248, p. 55. range measurements, errors induced by the atmosphere, J 68D11-426, 1229 (1964).

reflection coefficient measurements, magnified and

squared VSWR responses, 3247.

reflection techniques for dense plasma diagnostics, TN256.

reflectometer techniques, 3256. reflectometer techniques, measurement of reflec- tions and losses of waveguide joints and connectors, 3629.

signals on the same line-of-sight path at different frequencies, correlation of the phase, 5267. spectral tables. Diatomic molecules, Mono.70, Vol. I. spectral tables. Line strengths of asymmetric rotors, Mono.70, Vol. II. spectrometer, precision Zeeman modulation, 3720. standards and measurements, 5488. structure determinations on tertiary butyl acetylene and tertiary butyl cyanide, 4771.

studies of butadiene derivatives, 4772; 6214. surface impedance, skin depth, conductivity and Q, standards and measurements, 3787. theory technique, 6004. transition probabilities, zero-field theory, and optical Zeeman effect, 4903. transitions between excited electronic states of CN

and the identification of transitions involved,

optical detection, 6270. transitions in electronically excited CN produced by a chemical reaction, 4818. transmission, line-of-sight, experimental study of phase variations, Mono.33.

tubes, beam-type low-noise, J 64D6-96, 763 (1960).

tubes, tabulation of data, H70. wavemeters with convenient calibration tables, 3417. whistler mode propagation in a dense laboratory plasma, 3649. Microwave noise sources, absolute measurement of temperature, 3414. measurement of effective temperature, 6198. measurement of temperatures, 4463. radiometer for precise standardization, J 67C2-127,

139 (1963). temperatures, 4750 Microwave refractometer, absolute, 4464.

cavities, response to atmospheric variations, J 69D9-554, 1213 (1965); 6475. measurement of moisture boundary layers and leaf transpiration, 5466. system, noise tests of an airborne, 6888. 617
Microwave spectroscopy, 6211. atomic frequency standards, 3645. high temperature: Alf and A1C1, 6781.

versatile stark waveguide, 6527. Microwave spectrum, aluminum monofluoride, 5486. barrier to internal rotation in methylsilylacetylene,

6869.

cis-difluoroethylene. Structures and dipole moments

of fluoroethylenes, 4178. hydrazoic acid, quadrupole coupling constants, 5605. internal rotation of l-chloro-2-butyne, 3257. internal rotation of ethyl cyanide, 3258.

isobutylene. Dipole moment, internal barrier, equi- librium conformation, and structure, 4179. lithium chloride, 6212. methyldifluoroarsine, 4770. nonplanarity of cyanamide, 4769. normal propyl chloride, 5775. oxygen, ground-based passive probing, J 69D9-553,

1201 (1965). SO radical, 6213.

structure, dipole moment, and nuclear quadrupole

effects in vinyl chloride, 3648.

structure, dipole moment of propane, 3647. structure of difluoramine, 5485. structure of N2 F4 , 3259.

tertiary butyl chloride, 5487.

trans-crotononitrile, 3646. trimethylarsine, 3260. Microwave Zeeman, effect of free hydroxyl radicals, 4180.

effect of free hydroxyl radicals: 2nv2 levels, 4773. spectrum of atomic fluorine, 4361. spectrum of atomic oxygen, 3261. Microwaves, magneto-plasma, and a possible method for determining the electron velocity distributions, propagation, J 64D5-89, 509 (1960). radio standards and measurements, a progress re- view from 1960, 8975. Middle latitudes near the peak of the solar cycle, the

total electron content of the ionosphere content, 5806. lower ionosphere, distribution of electrons, 9071. Mid-latitude 6300 A arcs, effect of radio wave propagation, J 67D3-261, 263 (1963). auroras, 4774.

quiet ionosphere, diurnal and seasonal changes in structure, J 66D3-198, 297 (1962).

Mid-latitudes, stable 6300 A auroral arcs, 5687. Military inventory management, safety levels, 4904. Milk, tanks, farm, measurement characteristics, 4166;

4748.

Miller's recurrence algorithm, error analysis, 6047. Millimeter, precision, wave interferometry at the U. S. National Bureau of Standards, 3719A.

submillimeter wavelengths, resonators, 4282. wave Fabry-Perot interferometer, high resolution, 3568. wave research at the NBS, 5489. wave techniques, J 68D5-365, 633 (1964); 4181. wavelength resonant structures, 4775; 5490. wavelengths, new wavemeter, 4790.

Million, parts per, method for comparing two nearly

equal potentials, 5476.

Milliseconds, high-speed method for the simultaneous measurement of enthalpy, specific heat, and

resistivity of electrical conductors at high temperatures, 6546.

Mills' ratio, asymptotic expansion for the multivariate normal distribution, J 68B1-109, 3 (1964).

ratio for multivariate normal distributions, J 66B3-

77, 93 (1962). Millwork, water-repellent preservative non-pressure

treatment, CS262-63. Milne problem for light gases, some results on energydependent, 6381. Mineral, clay, content of two domestic Kaolins, 3468.

Mineralized tissues, 4776. Mineralogical graphite and diamond at 77 and 90° K,

adsorption of nitrogen and argon, 3962. Minerals, clay, 4866. survey of RbVRb7 ratios, 5718. Miniature gear, flange and bearing puller, TN253, p. 7. helium turbo-expander for cryogenic refrigeration systems, 5143. Minima of cyclic sums, 3849. Minimization of the arrestment error in one-pan twoknife balance systems, J 67C3-133, 227 (1963). Minimum partition of a matroid into independent subsets, J 69B1&2-134, 67 (1965). sums of absolute deviation, 4283A.

telemetry receiving system for the Alouette topside sounder satellite, TN222.

Minochloro-dichloro, and monobromacetic acids at 1 at- mosphere, 4300. Minors, permanental, and permanents, inequalities, 6794. Minutes of the Meeting, Ohio State University, Columbus, Ohio, of the Triple Commission for Spectroscopy, June 12, 1963, 6215. Tokyo, Japan, of the triple commission for spec- i troscopy, 5491. Mirror, spherical, Fabry-Perot resonators, 5686. Mirrors, arrangement, form multiple reference angles,

4325. Miscellaneous functions, AMS55.

studies in probability and statistics: distribution theory, small-sample problems, and occasional

tables, TN238.

topics, ionosphere radio, J 68D5-362, 594 (1964). Mismatch errors in microwave phase shift measurements, 3650.

loss, should the conventional definition be aban- doned? 6365. Misorientation, intragranular, measurement by X-ray

diffraction, J 65C1-55, 57 (1961).

Missile age, what it means to NBS, 3912. hypervelocity, unstable detonation, 5836. technique for the study of detonation waves, J

66C1-87, 51 (1962). Mixed layer structure, 4654; 4643. path ground-wave propagation on a spherical earth, J 65D4-145, 401 (1961). systems of rare earth and other oxides, phase equilibria studies, 6283. Mixing, isotopic, CO chemisorbed on tungsten, 6820.

isotopic, nitrogen chemisorbed on W, 6821. Mixture (argon-methane), argon, and nitrogen, absolute measurement of W for polonium-210 alpha

particles, 6577. Mixtures, binary, dilute bose gases with repulsive in- teractions at low temperature, 5213. CO-foreign-gas, 5952. cryogenic fluids, Kihara parameters and second

virial coefficients, 5434.

gas, and pressures for optimum output power of RF excited helium-neon gas lasers at 632.8 nm,

6769. gas Li + H and O + H, high temperatures, interaction energies and transport coefficients, 5414. simple liquid, statistical surface thermodynamics,

6401. zirconia yttria, by precipitation with cupferron, separation and determination of zirconium,

6362. Mn02-Mn2 03 at various temperatures, equilibrium pres- sures of oxygen, 6739. MnsOa-MnaO, at various temperatures, equilibrium pres- sure of oxygen, 6046. Mo5+ in rutile, electron spin resonance, 6031.

Mobilities and reaction rates of ions in helium, 6870.

positive ions in argon, 4777.

Mobility, asphaltenes, nitromethane, the electrophoretic, 5749. 618
drift, and diffusion for impurities in ionic crystals, 6709.

drift, ionic impurity in an electric field, 4609. Mode calculations for VLF propagation in the earth- ionosphere waveguide, TN114 (PB161615).

conversion in the earth-ionosphere waveguide, TN151.

modification, wave, liquid helium with clamped nor- mal field, 9136. operation of a phase sensitive detector, 6885. ray theories of the VLF radio propagation, some

remarks, J 68D1-319, 79 (1964).

signals, man-made one-hop whistler, at 18.6 kilo- cycles per second, variations in phase path,

5844. Mode theory, propagation of ELF radio waves, J 64D4-

72, 387 (1960). theory propagation of VLF radio waves, two-di- mensional treatment, J 68D1-320, 81 (1964).

radio propagation in terrestrial waveguides, 5646. ray theory, J 65D4-139, 357 (1961). VLF propagation, a new approach, J 65D1-101,

37 (1961). VLF radio propagation for spherical earth and a

concentric anisotropic ionosphere, 5242. Model, atmosphere and the ionosphere in the E and Fl

regions, 4426; 5144. beta zirconium hydrides, statistical, 6400.

bi-exponential, 6-45 GHz frequency range, bright- ness temperature of the atmosphere, 5935. binary error probability due to an adaptable fading, 5934. Brownian motion, 4313.

classical, study of isotope effects in energy ex- change and particle exchange reactions, 5865.

collective dynamic theory of the nuclear, 6002. condensation, producing crystalline or amorphous

tetrahedral networks, 5870. crater depth, regime of partial fluidity hypervelocity cratering data, 5396.

diffusive, initial phase of a solar proton event, 5873. dumbbell, dielectric dispersion in paraffin-like solids, 6545. experiments on propagation of a groundwaves

across an abrupt boundary at perpendicular in- cidence, J 69D10-571, 1375 (1965). F region above KTM*xF2, 3651. independent particle, metastable levels in the con- tinuum, 5475; 6206.

lattice, polymer molecule, statistical thermodynamics, 6402. lower ionosphere, experimental observations and

theoretical calculations, 5350. mass and energy of the loop prominence mechanism, 6836. mechanistic, limits of auditory perception, 5878. one-dimensional, of a solid, coefficient of thermal

expansion and Young's modulus, 5238. one-dimensional, polymer adsorption, 6554. one-parameter exponential, 6743. pure absorption, line-blanketing effect, difference between a non-LTE, 6641. random-walk, chain-polymer adsorption at a surface, 8980.

shell, interaction matrix element, 5415. sodium abundance, theoretical, twilight sodium

emission, 6263.

theoretical, predicting thermal stratification and

self pressurization of a fluid container, 6572. time-varying, for the ionospheric F2 layer, 5894. treatment, shell, nuclear reactions, 9005. vibrational relaxation of gases behind Shockwaves,

3262.

viscoelastic behavior of rubberlike polymers includ- ing entanglement effects, J 66B4-85, 171

(1962).

Models, atmospheric radio refractive index, 3652. mathematical programming, selection of diets to minimize weighted radionuclide intake, 5461. mathematical, theory of reliability, 5169. matrix, of resource flows, 6588. troposphere, J 68D5-361, 547 (1964). Moderately dense gas, density expansion of the viscosity, 6679. Moderation in instrumentation, 6871. Modern methods, analysis for design of cryogenic equip- ment and processes, 6216. theories of materials, 3653. Modes, decomposition of the neutral excited cyclohexane

molecule and reactions of the parent cyclohex- ane ion, 6770; 9080.

polar, lattice vibration and polaron coupling constants in rutile (TiO=), 6294. propagation in a bounded compressible plasma,

6872. Modification, Born-Mayer potential function as applied

to the crystalline alkali halides, 5145. wave mode, liquid helium with clamped normal

fluid, 9136. Modifications, methods of calibration of universal ratio

sets, TN220.

Modified gaussian distributions for slightly nonlinear

variables, J 68D9-406, 1049 (1964).

reflectometer technique of VSWR measurement,

J 65C4-74, 217 (1961). spectrophotometers, spectroradiometry, 5681.

statistical association procedure for automatic doc- ument content analysis and retrieval, M269,

p. 47. Weston standard cell over long long periods, 5971. Modular forms whose coefficients possess multiplicative

properties, 3263; 4778.

functions, construction and application of a class, 3166. Modular group, complete description of the normal sub- groups of genus one, 5869.

free subgroups and normal subgroups, 6090. normal congruence subgroups, 5510. normal subgroups, which are not congruence sub- groups, 6892. note on a subgroup, 5513. related groups, real two-dimensional representations of, 8981. subgroups, 5054. sums of squares, subgroups, 3802. Modular groups, note, 5154. Modulary groups of t x t matrices, 5492. Modulated photoelectric measurement of vibration, 4779.

signal, digital methods for the extraction of phase and amplitude information, J 65D4-138, 351

(1961). subcarrier technique of attenuation measurement,

6094. subcarrier technique of measuring microwaves at- tenuation, 4427. subcarrier technique of measuring microwave phase

shifts, 3387. Modulation, frequency, pulse code modulation frequency

shift system, error rate in multiple frequency

shift system and the output signal noise ratio, 6446.

linear, frequency, 4436. microwave spectrometer, precision Zeeman, 3720. remarks presented at panel discussion, 5637. techniques for VHF scatter systems, factors affect- ing, 3210. Modules, standard nuclear instrument, 6391. Moduli, composite, congruences for the partition function, 4014.

elastic, very low temperatures in some 300 series stainless steels, anomalous decrease, 6590. high-frquency elastic, simple fluids 6777. 619
Modulus, rupture of glass in relation to fracture pattern, 6217. shear, measuring, 4425. Young's, and refractive index as the result of suc- cessive heat treatment, changes in relation be- tween, 5945. Young's, for a one-dimensional model of a solid, coefficient of thermal expansion, 5238. Moire fringes produced by a point projection X-ray

microscope, J 67A2-201, 149 (1963). Moist air, plans for proposed new tables of the thermo- dynamic properties, 8944. Moisture boundary layers, measurement, leaf transpiration with a microwave refractometer, 5466. content of grain, gas chromatographic determination, 6768.

detector, TN263.

gas, measurement of humidity, 5391. heat transfer through insulated flat-roof constructions, 4168; 4749; 4994. humidity, 1963 symposium, 6466. measurements, stratospheric, using infrared spec- troscopy, 5704; 9042.

solid materials by reaction with calcium carbide, 6690. surface flammability of coated and uncoated cellulosic materials, 6714; 9076. Molar, six, hydrochloric acid solution, ether extraction

of the elements, 3535. Molecular, atomic processes, 4832. atomic properties, NSRDS-NBS3, Sec. 1. beams, low density, 3933.

collision models and transistion probabilities in

liquids, 4780. constants, determination, 6800. crystal structure of iodopentaborane-9, 9064.

crystals, impurities, intermolecular forces from

optical spectra, 3584.

crystals, theory of dielectric relaxation, 3352. detachment of hydrogen, 4403.

distribution functions, 4295.

dissociation products, 4491. hydrogen rotation-vibration interaction correction, intensity of the quadrupole fundamental, 6144.

interpretation, linear viscoelastic behavior of rubberlike polymers, 3844.

ions, studies of photodissociation, 6407. neutral excited cyclohexane, reactions of the parent

cyclohexane ion, modes of decomposition of: gas-phase photolysis of cyclohexane in the far

ultraviolet, 6770. nitrogen and hydrogen (

: P) atoms, 4835. nitrogen emission and the oxygen green line in the dark atmosphere, ionized, 3126. nitrogen emission in the sunlit atmosphere, 3127.

orbital study of the geometry of H02 , 4428. oxygen near 500°A, new Rydberg series, 6887. oxygen on the emission spectra of atomic oxygenacetylene flames, 4050. parameters of ethane, 4781.

refractivity in radio meteorology, 3140.

refractivity, potential refractive index, 4012. rotation by slow electrons, 6061; 6747. structure, TN274.

structure and chemical groups, analysis, 4490. structure of chloroform, 5021. structure of propylene, 4182. symmetry of iodopentaborane, 6462.

vibrations, 5123.

vib-rotors, theory and interpretation of high reso- lution infrared spectra, 5493. weight distributions, 4574. weight, effect on viscoelastic properties of polymers

as predicted by a molecular theory, J 67B2-96, 87 (1963).

weight on the sedimentation equilibrium second

virial coefficient of polymers in good solvents,

effect of heterogeneity, 6251. weights and sizes, 4782. weights, determination, 4574. weights of macromolecules, accurate determination, 2802A.

weights of polystyrene, initiated by sodium naphthalene, homogeneous anionic polymerization,

5390. Molecule, excluded-volume effects, limiting shape of the

distribution function of lengths of a single polymer, 8916. FeO, low pressure arc sources for the emission spectrum, 5136. free volume of a polymer, solvent interaction,

statistical computation of configuration, 5695. isobutane, structure of: change of dipole moment

on isotopic substitution, 3798. neutral excited pentane, study of decompositions

of the parent ion and. Gas-phase radiolysis of w-pentane, 6100. polymer, statistical thermodynamics of the lattice model, 6402. reactions of the parent cyclohexane ion, modes of decomposition of the neutral excited cyclo- hexane, 9080. thermometric, CN, 3782. Molecules, atoms, photoionization, TN131 (PB161632).

determination of electronic energy, low-energy elec- tron-impact spectroscopy, 5284. deuterated, method of adjusting force constants and its application to H20, H2 CO, CH2 C1, 6864. diatomic, dissociation, mean first passage times,

5464. diatomic, infrared band intensities, 3499. diatomic, liquid and crystalline rare gases, absorption spectra, 5901. diatomic, vibrational transition probabilities, 3911. Franck-Condon factors for polyatomic, 6087.

ion, TN291.

levels of symmetric-top, stark energy, 5694. metastable oxygen, ozone and airglow, 6451. monatomic, 4719. N2 ,02 , and NO, trapped in solid matrices, emission

spectra, 3527. negative surface ionization, 6882. organic, with nitrogen atoms, 4219.

polar, pressure induced shifts of infrared lines, 5591. polyatomic, dissociation, 3681. polymer, low surface coverage, adsorption, 6586. polymer, neighbor interactions and internal rotations, 3660.

small, at 4°K and 77°K, 4667.

small, gamma-irradiated, at 4°K and 77°K, electron spin resonance studies, 4063. symmetric top, nonresonant absorption and col- lision diameters in the foreign-gas broadening,

6227. Molten, alumina, solubility of water vapor, 6478.

fluoride, bromide, or iodide, theoretical electro- motive forces for cells containing a single

solid, 9110. melting polyethylene, determination of the propagation constants for ultrasonic waves, 5986.

oxide, theoretical electromotive forces for cells containing a single solid, 9111.

salt systems, sodium ions, 3123.

salts and a special porcelain of high sodium content, cation-exchange, 5942.

salts, conductance of glass immersed, 6652.

salts, measurement of cation concentration in, using glass membrane electrodes. Electrode 620
potentials in fused systems, J 69A6-379, 553

(1965). sodium nitrate, pure, transference numbers, 5827. Molybdenum, silver, tantalum, and gold at 662 kev,

total photoelectric cross sections, 3356A. Moment, dipole, of PC1.F from the nonresonant micro- wave absorption of the vapor, 6695.

electric dipole, hydroxyl radical, improved measurement, 6791. nuclear magnetic, of Pr"' from the hyperfine struc- ture of doubly ionized praseodymium, 6894;

6895. Moments, digital pattern recognition, 4585.

selected bibliography 1930 to 1957, J 66B1-69, 15

(1962). Momentum, autocorrelation functions and energy trans- port in harmonic crystals containing isotopic

defects, 5494. correlation functions, nonanalyticity of transport

coefficients and the complete density expansion, 6890. transfer collisions in oxygen for thermal electrons, J 69D2-455, 213 (1965). Monel metal and platinum, experimental study of the backscattering of 5.3 meV alpha particles, 6592. Monoacetone-D-lyxose of Levene and Tipson, 2, 3-0-

Isopropylidene-o-D-lyxofuranose, J 65A6-133,

507 (1961). Monobaths, phenidone-thiosulfate, characteristics of dosimeter films, 6629. Monobromacetic acid and the diagram of state of

dichloracetic acid at elevated pressures, poly- morphism, 4233. Monochromatic 6300 arcs, recent studies, 3744A.

subvisible, 6300 A arc with outer-zone radiation on November 28, 1959, correlation of an auroral

arc, 3486. Monochromator, electron, utilizing the scattering reso- nance in helium, 5330.

ultraviolet, 5099. Monofluoride, aluminum, microwave spectrum, 5486. Monograph Board, Geophysical, 4895. predicting the performance of tropospheric scatter communications circuit, 5149. Monohydrate, lithium dipotassium trimetaphosphate,

5052. NasPaOo'HsO, structures of anhydrous sodium tri- metaphosphate, NasPaC, 9095. zinc-doped copper acetate, electron paramagnetic

resonance spectra, 6733. Monolayers, adipate polyesters at air-liquid interfaces, J 66A5-178, 439 (1962).

linear saturated succinate polyesters at air-liquid interfaces, J 65A1-82, 51 (1961). Monomeric amides with lithium perchlorate, 4539. reagents on the melting (contraction) and re- crystallization of fibrous protein, 4615. Monomers and polymeric materials—plastics, resins, rubbers, fibers, 3138. Monophosphide, antenna with a circular conductingdisk ground system on the surface of a lossy half-space, impedence, J 65D2-118, 183, (1961). antenna with a radial-wire ground system on an

imperfectly conducting half space, J 66D2-185,

175 (1962); J 68D2-328, 157 (1964); J 68D3-

345, 297 (1964).

disk-loaded, electric field at ground plane, J 66D2-

188, 205 (1962). vaporization of uranium, 5834. Monosaccharides, mutarotational equilibria, infrared absorption spectra, J 66A1-139, 31 (1962). Monoxide, carbon, and oxygen on tantalum, field emission microscope used for observations, 6240.

carbon, broadened by nitrogen and hydrogen, line- widths in the 2-0, band, 6178. carbon, niobium, 5941. carbon, tantalum, study of field emission, 5358. Monte Carlo calculations of gamma-ray backscattering,

3654. calculations of the penetration and diffusion of fast charged particles, 5495. methods, use in computing finite Markov chains, J 64B3-36, 211 (1960).

statistical calculations vs experiment: condensation of tungsten on tungsten in atomic detail, 6650. Montel property, normal functions and interpolation in HTM, 5512. Monthly median refractivity gradient in tropospheric propagation, 1491A. Moon and Planets, investigation of the surfaces of, by

the thermal radiation, J 69D12-603, 1585

(1965). distance measurement by laser, J 69D12-623, 1681

(1965). 6-meter wavelength, angular scattering law, 6601.

optical radar using a corner reflector, 8927. point-to-point communication, J 67D1-238, 5 (1963). radar studies, J 69D12-618, 1637 (1965).

reflected UHF signals, computation and measure- ment of the fading rate, J 64D5-81, 455 (1960). rough, theory of radar reflections, J 66D3-189, 215

(1962). Morelco X-ray diffractometer, simple low temperature

specimen holder, 3945. Morphological classification in the NBS mechanical

translation system, 6873. Morphology and crystallinity, dielectric and mechanical

relaxation of crystalline polymers, 6202. ionospheric storms, 4783.

isotactic polypropylene, dependence of mechanical

relaxation, J 68A5-298, 519 (1964).

lamellar, a copolymer, J 68A3-272, 269 (1964). mid-latitude 6300 angstrom arcs, 5022. polyethylene, diffusion in a polymer, 5990. sporadic E, 4362. thermally evaporated zinc cleavage surfaces, 6218. Mortality patterns in eight strains of flour beetles, 6874. Mortar properties on strength of masonry, Mono.36. Mortars for cavity walls, 3655.

sulfur, simple method for measuring the amount

of granular materials, 6562. Mosaics, emulsion, photographic, spectroscopic applications, 3781. Mossbauer effect, discussion, 6700.

effect, measurement of the velocity of light, 4437.

effect, measuring the velocity of gamma rays, 4763. instrumentation, TN276.

spectrometer, drift-free, 6708. spectroscopy, TN276.

Motion, Brownian, contribution to the theory, 3167. Brownian, trapped trajectories, 6265. characteristics of the backscatter, J 65D2-109, 115

(1961) . elliptic vortex ring, localized-induction concept on

a curved vortex, 6832. filament struck transversely by a high-speed projectile, effect of air drag, J 66C4-107, 317

(1962) . rectilinear, micro-adjuster, TN253, p. 2. Motions, night and sporadic E correlations; ionospheric winds, 6164.

spread-/*1

, equatorial, 5338. Mount efficiency measurement technique, bolometer, J

65C2-62, 113 (1961). transparent rigid, for vacuum stopcocks, 5830.621
waveguide noise-tube, for use as an interlaboratory

noise standard, 5897; 6530. Mountain slope and radiosonde observations, 6544. Mounts, DC-RF substitution error in dual element

bolometer, 5871. Movement and lifetime, artificially produced electron clouds observed with spaced ionosondes, 5769. Mulit-anvil devices, 4552.

devices, correlation of factors influencing the pressures, 5266. Multichannel correlator, automatic, J 67C1-117, 33

(1963) . radio communication systems, required signal-to- noise ratios, carrier power and bandwidth to achieve a given performance, 5641. radio communications systems, required signal-to- noise ratios, RF signal power, and bandwidth, TN100.

resonances in the forward scattering of electrons by

helium, 6875. waveguide systems, method of improving isolation, 3385. Multicomponent mixtures, matrix algebra for calculating, 3626. Multiple-band conduction in w-type rutile (TiOa), 6876. Multifamily dwellings, impact noise, 6124. Multilevel systems, transition probabilities, 4393. Multimode waveguides, effect of wall perturbations, J

68D1-314, 35 (1964). Multipath field, field-strength measurements, 4654A.

propagation, elementary considerations of the ef- fects of in the meteor-burst communication,

J 64D5-86, 495 (1960). reduction factor, ionospheric, 4432. Multi-pen recorder, disclosure, TN287.

Multiphase periodic very-low-frequency emissions, J 69D2-462, 257 (1965). Multiple atmospheric inversions on tropospheric radio propagation, effect, J 65D4-142, 385 (1961). beam interference to the measurement of long end

standards, 3433.

biologic recording for digital analysis, 4183. discriminant functions, M269, p. 217. document collections, M269, p. 237. frequency investigations of radio wave absorption during the dawn-breakup phase of auroras, J

69D3-479, 415 (1965). frequency-shift system and the output signal/noise

ratio in a frequency modulation and a pulse- code modulation frequency-shift system, 4997

;

5751; 6446. generating functions, calculation, J 68B1-110, 13 (1964) . isolated-input network with common output, J

64C3-40, 225 (1960). layer insulation, 3656. layer insulation for cryogenic applications, 4184. reference angles, arrangement of mirrors, 4325. scattering corrections for proton range measurements, 6218A.

scattering of waves, J 64D6-96, 715 (1960).

Multiples, radiance, scheme for obtaining integral and

fractional, 5163; 5652. Multiplet strengths, theoretical, 3350.

tables and atomic energy levels Si II, Si III, Si IV, NSRDS-NBS3, Sec. 1. tables, ultraviolet, C488, Sections 3, 4, and 5. Multiplets, experimental transition probabilities for

six oxygen, 6063. Multiplicative properties (II), 4778.

properties, modular forms whose coefficients possess, 3263.

difference stes, J 69B1&2-138, 87 (1965); 4184A;

5496.

realization of semi-multipliers, 8982.

Multiply charged ions, survey, TN243.

decomposition, charged ions into singly charged

fragments, direct observation, 6698. scattered field, statistical distribution of amplitude and phase, J 66D3-191, 231 (1962). Multipole matrix elements of the translation operator,

6877. Multirange current transformer standards for audio

frequencies, design and performance, 9068.

Multi-slit, high-intensity Raleigh interferometer to sedimentation studies, 6604. Multistate systems, relaxation processes, 3294. Multistub coaxial line tune, 5879. Multivalued logic devices for simulating threshold neurons, 4185. Multivariable investigations, 3657. Multivariate distribution, on the asymptotic joint nor- mality of quantiles, J 68B2-118, 65 (1964). normal distributions, Mill's ratio, J 66B3-77, 93

(1962) ; J 68B1-109, 3 (1964). Multivibrator provides bidirectional output pulses, 6878. Munsell renotations, mechanized conversion of colori- metric data, 3635. Muscovite absorption spectrum, alteration, KBr pellet preparation, 5185. sheet mica on the basis of color, apparent optic angle, and absorption spectrum, correlation, J 67A4-220, 309 (1963). sheet mica, thermal behavior, J 67A6-244, 585

(1963) . Mutual interference between surface and satellite communication systems, TN126; 4186; J 65D5-

148, 433 (1961). Mutarotation reactions, TN274.

Mutarotational equilibria of monosaccharides infrared absorption spectra, J 66A1-139, 31 (1962). N N atoms, H atoms and ozone, atomic flame reactions, 5206. N-butane, gas-phase radiolysis, 5375.

photolysis; vacuum ultraviolet photochemistry,

6525. N-dimethylaminodiborane, heat of formation, J 65A1-

86, 71 (1961). N-dimenthylformamide on contiguous, secondary sul- fonyloxy groups, action of zinc dust and sodium

iodide in N; simple method for introducing non-thermal unsaturation, 6580A. N-methylpropionamide from 20° to 40°, conductance of copper m-benzenedisulfonate hexachydrate,

5966. conductance of potassium chloride, 5967. N-paraffin, orthorhombic, melting properties to very

long chain lengths, 5000. N-pentane, gas-phase radiolysis. A study of the de- compositions of the parent ion and neutral

excited pentane molecule, 6100. N-perfluoropentadiene-1,4 at high temperature and

pressure, radiation-induced polymerization,

8970. N-type rutile (Ti02 ), multiple-band conduction, 6876. N,N-Di-(2-hydroxyethyl) -glycine and related thermo- dynamic quantities from 0 to 55°, second acid

dissociation, 6359.

Nl.O, vibration-rotation bands, 3910. 02 , and NO molecules trapped in solid matrices, emission spectra, 3527. N2 +0— NO + N at thermal energy, laboratory measure- ment at the rate of reaction, 6823. N2 and 02 by Vi and 1 Mev protons, excitation, 3207. N2 Lyman-Birge-Hopfield and CO fourth positive sys- tems, interpretation of intensity distributions, 3588. 622
N? oscillator strength from arc spectroscopic measure- ments using an analog computer, 6231.

Na' + Oj—

N

a +(V at 300°K, correction in laboratory measurement of the rate constant, 6659A.

Na*, Rb* and K+, rhenium, kinetics of desorption, 5436. NaoPaOu'HzO, structures of anhydrous sodium trimeta- phosphate, Na3 P3 0e, and the monohydrate, 9095. NaB (OH) 4 «2H2 0, direct determination of the crystal structure, 5745. N2 Ft , microwave spectrum and structure, 3259.

Nails, aluminum, CS263-64. Nakagami-Rice probability distribution, some statistical parameters related to, J 68D4-358, 429 (1964). Nanosecond risetimes, behavior of coaxial cable connectors, 5933. Naphthalene, and anzulene, electron impact studies of aromatic hydrocarbons, 6028. chrysene, triphenylene, pyrene, and naphthacene,

6027. naphthaphene, chrysene, triphenylene, and pyrene,

6027. sodium, homogeneous anionic polymerization, Molecular weights of polystyrene, 5390. Narrow-band spectra of low-energy X-radiation, 1411A. Narrowly classified particles, sieve techniques for ob- taining small amounts, 6366. National Aeronautics and Space Agency, Goddard Space

Flight Center, Greenbelt, Md., J 68D5-364, 644

(1964).

fixed frequency topside sounder program, 5023.

satellite tracking stations, VLF utilization, J

68D1-315, 43 (1964).

topside sounder satellite, 5362. topside sounder satellite program, 4657. National and international organization engaged in the standardization of dental materials and

therapeutic agents, work, composition and in- terrelation of, 6647. National Bureau of Standards, A atomic time scales, comparison of TA,, 5868. A time scale—its generation and dissemination, 9087A.

absolute calibration, photoneutron source, 5174. absolute gravity experiment, 3850.

activities for the American Rubber Industry, 5497.

activities of the cooperative dental research between

the Federal Government and the American

Dental Association, 6373. atomic frequency standards, 4189. Boulder Laboratories, cryogenics, 9105. Boulder Laboratories, establishment and mainte- nance of the unit of voltage, 5752.

calibration of photogrammetric lenses and cameras,

5223. Central Radio Propagation Laboratory, 6219. control of temperature and relative humidity in rubber laboratory, 6659. corrosion investigation in disturbed and undis- turbed soils, 8999.

field strength calibration techniques, 6756. free-air chamber for measurement of 10 to 60 kV

x-rays, J 69C1-184, 39 (1965). gas thermometer. III. Constant volume valve. 6879. glass standards of spectral transmittance, recali- bration, 6337. group, structure of its machine glossary, method

for mechanical translation, 5774. high frequency calibration and microwave services, 6208; 6867. instrumentation literature reference file, 5929. intercomparisons of the standard thermalnuetron

flux density, 5417. LF-VLF frequency and time services, 6176.

LINAC, on-line data handling system, 6245.

list of IGY flares, correction, 5263. maintenance of electrical units, 5458. mechanical translation system, morphological classification, 6873. microscropy, resolution test chart, 5498. microwave calibration techniques, 6209. millimeter wave research, 5489. needs of the statistical engineering program, 6465. new high voltage calibration facility, 5147. 1955 and International Practical Temperature

Scales in the region of 90 °K, application of precise heat-capacity data to the analysis of

the temperature intervals, J 69A1-321, 5 (1965) . 180 MeV machine, characteristics of "synchrotron

light", 6631. observatory report, Joint Institute for Laboratory

Astrophysics, University of Colorado, Boulder,

Colorado, 6241. photoneutron source, absolute calibration, 5174. polymer research, Part I, 5573; Part 2, 5574. (1955) provisional temperature scale, irregularities, J 69A6-374, 527 (1965).

research, annual observatory report on spectro- scopy, 5201. research applicable to long-distance location and

direction-finding problems, J 65D3-124, 233

(1961).

research, millimeter wave, 5489.

scientific information, activities, 5653.

solar observatory, requirement, 5642. source of American standards, 4190. spectroscopy, annual observatory report, 5919. spectroscopy, annual report, 6602. standard frequency and time services. Radio sta- tions WWV, WWVH, WWVB, and WWVL.

(1966) M236, 1966 Edition. standard hygrometer, Mono.73; 9087. standard hygrometer and NBS two-pressure humidity generator, 6542. strain gage research, 5702.

studies, of platinum-6%, rhodium vs. platinum- 30% rhodium thermocouple, 5708. thermodynamic data compilation and review, 6503. time scale and its relation to other time scales, 9088.

tritiated-toluene standard of radioactivity, calibration, 9061.

tritiated water standards, 5884; 6464. two-pressure humidity generator and the NBS

standard hygrometer, 6542. unit of resistance, evaluation based on a computable

capacitor, J 65A3-97, 147 (1961). work, current, properties of parahydrogen, survey,

6414. National Bureau of Standards, Boulder, Colo., J 68D5-

364, 645 (1964).

calibration of mass standards for ultramicroanalysis, 4985. gas thermometer, 4429. gas thermometer. II Measurement of capacitance

to a grounded surface with a transformer

ratio-arm bridge, J 69C1-180, 13 (1965).

library, 4363.

list of IGY flares with normalized values of im- portance and area, 4784. meteor burst communication system, 3342. method of syntactic integration, 4364. photoelectric pyrometer of 1961, 4927; 5024. reactor facility, 5025. viscometer calibrating liquids and capillary tube

viscometers, Mono.55. Washington, D.C., and Boulder, Colorado, 4187. where measurement is the central theme, 5026.623
National Center for Atmospheric Research High Alti- tude Observatory, Boulder, Colo., J 68D5-364,

645 (1964). National Conference on Weights and Measures:

1960: M235.

1961: M239.

1962: M244.

1963: M254.

1964: M263.

1965: M272.

National Conference on Weights and Measures. Index

of reports on first to forty-fifth Conferences, M243.

National Radio Astronomy Observatory, Greenbank, W. Va., J 68D5-364, 646 (1964). National, reference standards for high frequency im- pedance, 5042. research needs, long look, 3337. roentgen, and gamma-ray exposure-dose standards,

5416. standards, contributions of government and private

agencies, 1660A.

standards for roentgen measurement, 3478. standards of time and frequency in the United

States, 3658. viewpoint, standardization, 5690. standard reference data, program, 6220. program. Background information, TN194.

system. Plan of operation, NSRDS-NBS1.

system, status report, April 1966, TN289.

Nation's electronic standards program, 3851. Natural and synthetic rubbers, 4188; 5499. Natural, electromagnetic energy below the ELF range, J 64D4-74, 409 (1960). electromagnetic field fluctuations in the 3.0 to 0.02 cps range, 5500. electromagnetic phenomena below 30 kc/s, 6221. ELF electromagnetic phenomena, J 69D8-540, 1071

(1965). rubber, kinetics, crystallization, the effect of hydrostatic pressure, 5309; 5747. rubber, some changes in double-bond structure dur- ing vulcanization, J 68A5-296, 499 (1964). variation of copper isotopes and the atomic weight

of copper, 6880. Nature, cause and effect of porosity in electrodeposits, 3339; 3340; 3341; 4365; 4366. cloud layer of Venus (from radiometric observations as microwaves), J 69D12-601, 1580

(1965). compound obtained from aqueous cesium chloride

solution and hydrogen chloride, 5776.

crystal field approximation, TN67 (PB161568) ; 4206; 5536. electromagnetic field reflected from a coastline, 6881. equatorial slant sporadic E, 4807. equatorial spread F, 4205. inorganic phase in calcified tissues, 3852. plasma resonance, 8917.

ultraviolet light which accompanies the decomposition of some azides, 3686. Navigation, radio, system, note on the propagation of

certain LF pulses, TN118 (PB161619).

systems, radio, low frequency ionospheric phenomena, 4802. timing and space, 5089A.

Navigational aids, effects of the ionosphere on VLF, J

65D6-161, 575 (1961). Navy calibration training program, M248, p. 187. N-Body Green's function, classical, binary collision ex- pansion, 4803. NBr, NCI, and NF, infrared spectra, 6131. NCFSK system, effect of atmospheric noise on the

probability, 9073A.

NCN, free radical, infrared and ultraviolet spectra, 6850. NCI, NF, and NBr, infrared spectra, 6131. NCO, emission spectrum, excited in condensed dis- charged N2+CO at 4.2°K, 3684. Nd3+ in LaCl3 , spectrum, 5685. Ne and He, classification of resonances in the electron scattering cross section, 5234. Ne, He and A, new autoionizing atomic energy, 5502. Ne, He, Ar, Kr, Xe, and Hg, elastic resonances in electron scattering, 6721. Ne2+ and He2+, reaction rates for formation, 5629. Near, determinants and conditional inertia indexes, 3896. infrared atmospheric transmission to solar radiation, 3659. infrared spectrophotometric method for the de- termination of hydration numbers, J 68A6-310, 625 (1964).

reflectors, radiation impediance of a source, 5613. threshold energy, excitation of the 2P state of hydrogen by electrons, 6447.

vertical incidence from contour maps, theoretical scattering coefficient, J 65D5-147, 427 (1961). Nebulae, diffuse: balmer decrements, 3447. Needs of the statistical engineering program of the NBS, 6465. Negative, atomic ions, 3264. exponential distributions, one or two order statistics, optimum estimators of the parameters,

5550. hydrogen ion by electron impact, 3522. impedance converts, two, 4966. pressure of liquids, technique based, investigating electrochemical phenomena at an electrode, galvanostolametry, 5370. surface ionization of an alkali halide, determination of work function from the ratio, 9069. Negative ion, atomic carbon, 4947. atomic oxygen, photodetachment cross section, 3710.

electron densities in the lowest ionosphere, height

distribution of ratio, 6253. hydrogen, 4984. hydrogen, ionization, 3592. processes relevant to aeronomy, a review of photo- detachment, 5885.

studies, optical methods, 3698. Negative ions, double-photon photodetachment, 5305.

identification of energy levels, 6787; 8914. radiative formation and destruction, 4372. Neglecting the compressibility of the ionosphere in VLF radio propagation, 6822. Neighbor interactions and internal rotations in poly- mer molecules, 3660.

sets for random walks and difference equations, 1782A. Neighbors from abroad, are they aware of standards and what standards can do for them, 6608. Neon, atomic lifetimes in, 6609. atomic spectroscopy, NSRDS-NBS4, Vol. I. 25 to 300°K between 0.1 and 200 atmospheres, thermodynamic properties, 9113.

isotopes in the temperature range 4°-24°K, 4753;

5468. P-p-T values, 5603. thermodynamic properties, 6307. Neptunium hexafiuoride, theory of the magnetic and

spectroscopic properties, 3884. Neptunyl ion, electronic structure and magnetic properties, J 69A3-341, 217 (1965). Net, charge, plasma, 4841. heat of combustion and other properties of kerosine and related fuels, 4785.

positive suction head, direct measurement, 3186A. 624
Network, multiple isolated-input, with common output, J 64C3-40, 225 (1960). parameters, not assuming reciprocity or equality

of the waveguide or transmission line characteristic impedances, 6343. spacewarn, summary report on activities, 5716. transfer theorem, 4430. Networks, condensation model producing crystalline or amorphous tetrahedral, 5870. four-terminal-pair, precision admittance and im- pedance standards, 6083. passive, and antenna arrays, analogies between

theories, 6599. polystyrene, formed from oriented chains, 6376.

scientific papers, statistical studies, M269, p. 187. Neuron model which performs analog functions, 4431. Neurons, simulating threshold, multivalued logic devices, 4185. Neutral, air in the ionospheric F-region, effect of ion- drag, 9075. erbium, new odd low levels, 6886. excited cyclohexane molecule and reactions of the parent cyclohexane ion, modes of decomposition, 6770; 9080. excited pentane molecule, study of decompositions

of the parent ion. Gas-phase radiolysis of n- pentane, 6100. germanium, correlation between observed wavelength shifts produced in electrodeless dis- charge tubes and predicted stark-effect shifts

in the spectrum, 5977.

levels of cerium (Ce i), low energy, 5452. meson photoproduction complex nuclei, 4786. mesons from complex nuclei, low-energy photoproduction, 3607.

particle decays, gamma rays, 4825. pion photoproduction, nuclear size determination,

8901. Neutron, age in water and heavy water for D-D sources,

calculations, 3990.

detection by reactions induced in scintillators, 3661. dose measurements, fast, for a D-D source in water, J 68A1-250, 1 (1964). dosimetry and neutron flux measurement, standards, 2776A.

elastic scattering for calcium, nuclear optical model

analysis, J 66A5-174, 389 (1962).

fluxes, TN276.

insensitive proportional counter for gamma-ray

dosimetry, 3662. reactions on sulfur and oxygen in the manganoussulfate-bath calibration of neutron sources, 9063.

scattering, incoherent inelastic, and self-diffusion, 6126. source standardization, recent developments, 5631.

sources, correction factor for fast neutron reactions on sulfur and oxygen in the manganoussulfate-bath calibration, 9063. Neutron flux, and spectra for physical and biological applications, measurement, H72. measurement and neutron dosimetry, standards, 2776A. NBS standard thermal, recalibration, 3940. thermal, an absolute calibration of the National Bureau of Standards, J 67A3-206, 215 (1963). Neutrons, D-D, low scatter high current gas target, 3610. decay, produced in high-altitude nuclear explosions, VLF disturbances caused by trapped beta rays, J 68D1-325, 117 (1964). gamma rays, and electrons, shielding against, from

nuclear weapons. A review and bibliography. Mono.69.

gamma rays, image source technique for calculat- ing reflection of, 6593. measurement of absorbed dose, mixtures of neutrons and gamma rays, H75.

single scattered, from an isotropic point source, TN63 (PB161564).

3-Mev, and to thermal neutrons, sensitivity of photographic film, 3865. 350 keV polarized, with oriented Ho105 nuclei, inter- action, 6453; 6807. x rays, and gamma rays, standards, instruments and measurement standards, H85. New, absolute null method for the measurement of magnetic susceptibilities in weak flow-fre- quency fields, 5146; 5501. aid for the rapid determination of absorption cor- rections by Albrecht's method, 3118. airglow photometer, J 65C4-73, 213 (1961). approach to the mechanical syntatic analysis of Russian, 3934. approach to the mode theory of VLF propagation,

J 65D1-101, 37 (1961). approach to the theory of satellite orbits, 3265. autoionizing atomic energy levels in He, Ne and

A, 5502.

control standards, 6536. co-ordination compounds of copper (II) chloride, 9021.

criterion for the univalence of transformations

in an R

n

, 3361. decomposition formula in the theory of elasticity, J 65B2-54, 151 (1961).

differential operator of the pure wave type, 6552. dry cell standard, major revisions, 6842. fast-opening, large-aperture shutter for high-speed photography, J 67C1-120, 65 (1963). fluoropolymers, pyrolysis, 6323. guide, the ionosphere, how to listen to the world,

9084. high resolution small-angle x-ray camera, J 68C3-

161, 173 (1964). high voltage calibration facility at NBS, 5147. interferometric method, hyperfine structure and

isotope shifts in the 2537-A line of mercury,

5394. international standardization, responsibility of the

engineer, 5421. ionospheric multipath reduction factor (MRF),

4432. method for obtaining ionospheric N(h) profiles with a bearing on the structure of the lower F region, 5678; 6380. method of measuring gage blocks, J 64C3-37, 173

(1960). microfilm with electronic scanners, progress re- port on FOSDIC III, 3265A. mode of operation of a phase sensitive detector, 6885. odd low levels of neutral erbium, 6886. plumbing stack data, 4191. potential energy function. I. Empirical, 4787.

potential energy function. II. Theoretical, 4788. radiofrequency mass spectrometer having high duty cycle, J 67C4-139, 283 (1963). Rydberg series in molecular oxygen near 500A,

6887.

scale of nuclidic masses and atomic weights, 4789. speculation of terrestrial helium loss, 6553. standard of spectral irradiance, 5148. standards for the space age, 4192. steady-state calorimeter for measuring heat transfer through cryogenic insulation, 5880. SU3 prediction with experiment, 5960. technology on the forest industries, 6788.

test for univalence of transformations in R", 3361. 625
transition metal-Schiff base coordination polymers, thermogravimetric, 9115. type of computable inductor, J 67B1-91, 31 (1963). voltmeter standards, one year trial, 5545. wavelengths for some helium lines, 3663. wavemeter for millimeter wavelengths, 4790. NF and NF2 by photolysis, formation, 6761. N-F bond energy and nitrogen trifluoride, heat of formation, 3228. NF2 radical, infrared spectrum and structure, 4124. NF2 , Na, N2 F2 , and N2 F4 , mass spectrometric study, J 65A5-120, 405 (1961). NF, NCI, and NBr, infrared spectra, 6131. NH, infrared spectrum; infrared studies of the photolysis of HN3 in inert and reactive matrices,

6136. NHj, free radical, matrix-isolation infrared spectrum,

6849. NHt + and CH,, Hartree-Fock approximation, 5379. N(h) profiles with a bearing on the structure of lower F region, some results of a new method for ob- taining ionospheric, 6380. Ni", dilute alloys of nickel in cobalt, 4794. nuclear moment, 4795. nuclear resonance studies in steady external magnetic fields, nuclear moment, 5518. NiBr2 platelets, growth spirals, 6107. Nickel and alloys, 5503. Nickel, aluminum alloy coatings produced by electro- deposition and diffusion, 3664. bromine surface reaction, mass spectrometric in- vestigation, 6190. cadmium batteries, thermal effects, 6019. cadmium dry cells, impedance of sealed, 6789.

chlorine, mass spectrometric investigation of the high temperature reaction, 6189. chromium solvuses in the chromium-nickel system,

redetermination, 4267. chlorine surface reaction, 5095. coatings after atmospheric corrosion, 4366.

cobalt alloys, 4706.

cobalt, dilute alloys, 4794. cobalt nickel-rich alloys, nuclear resonance stuy

of hyperfine fields, 8900. copper, 70 percent nickel-30 percent copper, and 30 percent nickel-70 percent copper alloys, cold- drawn, J 66C1-88, 59 (1962).

dip, adherence of ground coat enamels to steel, 951A.

dip, radioisotope study, 929A.

evaporated films and carbon, hydrogen reaction, 6121.

ions, 4991.

iron, alloys, nuclear resonance and the hyperfine

field in dilute, 5521. oxide thin film resistors for low pressure shock wave detection, 3665.

rich nickel cobalt alloys, 4706; 8900. samples, bulk, nuclear magnetic resonance, 6896.

(II), Manganese (II) and zinc (II) ions, and some symmetrically substituted ethylenedi- amines, complex formation between, 5252. Watts, use of disodium m-benzenedisulfonate, 3898. NiCl2 and Nif2 , spectra of matrix isolated, 9026. Nif2 and NiCl2 , spectra of matrix isolated, 9026. Night, airglow, latitude survey, 6547. E layer, 5027. ionospheric soundings, 2175A.

sky emission spectra between 5000A and 6500A,

3687.

sky, light, absolute photometry, TN214.

sky, light: astronomical interplanetary and geophysical, 6457. sporadic E correlations, motions into; ionospheric winds, 6164.

Nightglow, TN329; 5777. advances in electronics, 5504. [IO] 5577, emission at Fritz Peak, 3404. Nighttime variations of F-region electron density profiles at Puerto Rico, 6222. Nine and 90 mile paths, fluctuations in a laser beam,

6073. Nineteen hundred and fifty nine CIE supplementary

standard observer proposal, field trial, 6069. Ninth plenary assembly of the CCIR, 3852A. Niobium, and tin, 5041. carbon monoxide, 5941.

field emission, normal and superconducting states, 4088.

95, M260-9.

pentoxide-bismuth sesquioxide, phase equilibrium

relations in the binary system, J 66A6-180, 451

(1962). pentoxide-boric acid, phase equilibria in the sys- tem, J 70A1-382, 11 (1966). pentoxide, phase equilibrium relations in the bi- nary system barium oxide, J 65A4-115, 337

(1961). surface ionization, 9054; 9096.

tin alloys, superconducting, intermediate phases, J 66A4-171, 351 (1962).

tin superconducting wire, quantitative metallo- graphy of, with a digital computer, J 67A2-

200, 127 (1963).

Nipples, pipe: brass, copper, steel, and wrought-iron,

CS5-65.

Nitrate, cerous magnesium, low temperature properties, 3613. cerous magnesium, magnetic susceptibility, 4160. cerous magnesium, spin-lattice relaxation, 4305. copper II, determined by electron diffraction, struc- ture of gaseous, 5800; 5801.

ethyl, photolysis, primary processes, 5593. pure molten sodium, transference numbers, 5827. Nitrates and carbonates, inorganic, 4728. two rare earth double, 4932.

Nitric oxide, fluorescence, rotational, vibrational and

electronic energy transfer, 5650. mass spectrometric study of the effects, J 69A3-

348, 287 (1965).

purification and vapor pressure, 4250.

spin-orbit coupling constant. Determination from

fundamental and satellite band origins, 6387. with atomic oxygen, chemiluminescent reaction, 4196.

Nitride, aluminum, dislocations and staking faults, 4041. Nitroalkanes, photochemical decomposition, 4858. Nitrogen, active, measurements of ionization, 4607. afterglow, vibrational intensity distributions, 3367.

air, and carbon dioxide, absolute measurement of W for Po210 alpha particles, 3958.

air, argon, carbon dioxide, carbon monoxide, hydrogen, oxygen, and steam, tables of thermody- namic and transport properties, 3806. argon, argon-methane mixture, absolute measure- ment of W for polonium-210 alpha particles, 6577. argon on mineralogical graphite and diamond at 77 and 90°K, adsorption, 3962. atomic spectroscopy, NSRDS-NBS4, Vol. I. atoms, organic molecules, 4219. atoms, studies of the evaporation of condensates

containing, 3321. atoms with ethylene, mass spectrometric study of the reaction, 6844. atoms with ethylene, rate of reaction, 3714. carbon monoxide or acetylene, emission spectra of

solids condensed at very low temperatures from the electrical discharge products, 4066. 626
chemisorbed on W, isotopic mixing, 6821. emission and the oxygen green line in the dark

atmosphere, ionized molecular, 3126. emission in the sunlit atmosphere, molecular, 3127.

flames, active, exhibiting CN "tail" bands, a spectral study, 6384. helium gas, load carrying capacity of gas-lubri- cated bearings, TN115 (PB161616).

hydrogen, linewidths in the 2-0 band of carbon monoxide, 6178. hydrogen, oxygen, and refrigerants 12 and 11, choking two-phase flow literature summary and

idealized design solutions, TN179.

hydrogen, oxygen, idealized solutions for choking, two-phase flow, 5673. metastable atomic, helium-nitrogen afterglows, ESR measurement, 6742. methane, adsorption, silica gel, synthetic zeolite and charcoal, 5732. methane, comparison of the low temperature adsorption, hydrogen gas on three different adsorbents, 5130. microwave discharge, magnetic study of the frozen

products, 3246. nitrogen-argon deposited films at 4.2° K, phosphorescence, 3708. NMR chemical shifts, azide ion, 5506. oxidation of asphalt flux with oxides, 8931. oxide and N02 with 0 atoms, mass spectrometric study of the reactions, 6195.

oxides, atmosphere of Mars, 3538. oxygen, condensed, nu vibration of methane, 5516. oxygen, hydrogen, and helium, boiling heat transfer, TN317.

oxygen ion-molecule reactions of atmospheric im- portance 0

+-f N2NO++N, some measured rates. 9020.

solid, effect of structure of the spectra emitted, during electron bombardment, 3510.

solid, thermal conductivity, 5058.

solid, under electron bombardment, isotope ex- change processes, 3598.

spectral study of a visible short-duration after- glow, 3309.

static liquid, and liquid hydrogen, nucleation characteristics, 6235. thermodynamic properties, 64 to 300° K between

0.1 and 200 atmospheres, TN 129 (PB161630). thermodynamic properties, 114 to 540° R between

1.0 and 3000 psia. Supplement A (British Units), TN129A.

trifluoride and the N-F bond energy, heat of for- mation, 3228. vacuum ultraviolet, absorption spectrum of the "pink" afterglow, 6428. xenon photosensitized formation of metastable,

9144. Nitrogen and liquid, crystalline argon, vacuum ultraviolet absorption spectra of oxygen, 6523. evaluation of ball bearing separator materials operating submerged, 3536. hydrogen discharging into a vacuum, a preliminary

study of the orifice flow characteristics, 5883. measuring the cooling load of refrigerated vehicles by free evaporation, 6859. testing of ball bearings, 4342.

testing of ball bearings with five different separator

materials at 9200 RPM, 4977. Nitromethane, asphaltenes, velocity-depth relationship

in microelectrophoresis, 5845.

electrophoretic mobility of asphaltenes, 5749. Nitronium perchlorate, heat of formation, J 66A6-179,

447 (1962). Nitrous oxide (N20), infrared absorption spectrum of, from 1830 cnr1 to 2270 cm"1

, J 68A1-255, 79

(1964).

radiolysis, J 69A2-330, 79 (1965).

NMR, anomalous, linewidth in lithium and sodium,

6248. determination of the structure of cyclonols, 4982.

spectra, fluorine and proton, of HBF2 , 6318.

studies of asymmetric ethanic rotators: 1,2-di- substituted propanes, 6223. techniques, ultrasonic determination of crystalline resonances and sound velocities, 9124. NO, and N02 with O atoms, mass spectrometric study

of the reactions, 6195.

crystalline and liquid krypton, spectroscopic absorption, 5682. gaseous state, nonresonant microwave absorption and electric dipole moment, 3266. Kr and CH3 OH solutions, charge-transfer absorption spectra, 5948. N2 and 02 molecules trapped in solid matrices, emission spectra, 3527. NO+N, rate of the reaction, 4260. N02 , concentrations of vibrationally excited 02 formed

in the flash photolysis, 6249. Noble, gases, shift of the R(0) and P(l) infrared lines of HC1, 9006. metal dental alloys, x-ray spectrometric analysis, J 68A1-251, 5 (1964). metal thermocouples, some recent developments,

5677. Node-shift technique, Weissfloch-Feenberg, automatic method for obtaining data, 6591. Nodule method of measuring the adhesion of electro- deposited coatings, 152B.

Noise, absorption events, cosmic, geomagnetically con- jugate stations, 6663. absorption events, short-duration cosmic, conju- gate regions at high magnetic latitude, 6375. anomalies in August 1958, radio, 5619. comparator, precision, 5882A.

cosmic, absorption at the moment of geomagnetic

storm sudden commencements, 4955. cosmic radio, high frequencies, use of dual-polarized broad beam antennas to determine the extraterrestrial intensity, 5805.

electrical, analysis of a microwave radiometer for

precise standardization, J 67C2-127, 139

(1963). emission spectrum of the atmosphere, width of the microwave lines of oxygen and their relationship, 9139.

factor, receiver, 8984. impact, multifamily dwellings, 6124. masers, J 68D5-465, 669 (1964). measurements and standards, J 64D6-96, 601

(1960).

oscillator, obscurities, 5955; 6237. properties, lower atmosphere, radio thermal, 5785.

ratio of cosmic, absorption during polar cap absorption events, day-to-night, 5743.

ratio, output signal, frequency modulation and

pulse code modulation frequency shift system,

error rate in multiple frequency shift system,

6446.

resistor, test system, 4593.

sources, microwave, measurement of temperatures,

4463; 4750; 6198. standard, interlaboratory, waveguide noise-tube mount, 5897; 6530.

terrestrial radio, measurement of characteristics, 5018.

tests of an airborne microwave refractometer sys- tem, 6888. thermionic diode, sources, emission stabilization, TN160.

tube mount, waveguide, for use as an interlabora- tory noise standard, 5897; 6530. VLF to HF bands and prediction of communication

reliability, 5507. 627
Noise, atmospheric, probability of error for an NCFSK

system, 9073A.

radio, amplitude-probability distributions, Mono.23.

various receiving locations, properties, J 64D6-96,

640, (1960). wide dynamic range, reproducing of and magnetic tape recording, 6187. Noise, radio, TN18-3 to 18-13 (PB151377-3 to PB151377-13) and TN18-14 to 18-26. anomalies in August 1958, 5619.

effect of atomic tests, 3192. generation in the vicinity of the earth, J 66D2-

182, 153 (1962). NOMAD-1, world, 6492. Nomenclature, carbonhydrates, 4193. conformations of pyranoid sugards and derivatives, 3119. standards of radioactivity, 3667. Nomogram for computing and a nonogram

for computing [~p^|' TN250. Nomograms for computing complex number ratios, TN250. Nomograph, color filter, 6639.

selecting light balancing filters for camera ex- posure of color films, 3120; 3935. Nomographs, computing real, imaginary and absolute values of vector ratios, 6889. Non-additivity in two-way analysis of variance, 4194. Nonanalyticity of transport coefficients and the complete density expansion of momentum correlation functions, 6890. Nonaqueous, media, fibrous proteins, melting (contraction) and recrystallization, 5773.

solutions, titrations, 604A. Noncentrosymmetric space groups, splitting of equival- ent points in, into subsets under homogeneous

stress, J 69A5-368, 461 (1951). Noncrystallizable components on the crystallization

kinetics of polymers, 4616. Non-cubic environment, absence of pronounced quadrupole effects in the nuclear resonance of In115

, 5898. Nondeviative absorption of high-frequency radio waves

in auroral latitudes, 2374A.

Nonequilibrium, atmosphere, source function, 3308;

3868; 3869. chemical excitation and chemical pumping of

lasers, 6891.

distributions, 4893.

initial, populations of rotational states of OH(2S

+ ), 4226. plasma in a magnetic field, diffusion coefficients and microscopic fluctuations, 6866. processes in isotopically disordered crystals, 4195. rate processes, 4950. thermodynamics in the presence of a radiation field, 9015. thermodynamics of canonically invariant relax- ation processes, 6224. thermodynamics of creep in polycrystals, 6225. Non-harmonic fourier series, 630A.

Non-linear, ambipolar diffusion, 4791. ambipolar diffusions of an isothermal plasma

across magnetic field, 6226.

differential equations, tunnel diode large-signal equivalent circuit study, J 66C1-86, 45 (1962).

effects in spectra of the iron group, 5508. equation of nonautonomous character, 4497.

optical properties of solids, J 68D5-365, 671 (1964).

oscillations, 2647A. phenomena in the ionosphere, J 69D1-439, 9 (1965).

problems arising in the study of random processes, J 68D9-393, 933 (1964). processes in the ionosphere, conference, TN211,

Vol. 1-6. propagation, TN325.

propagation of electromagnetic waves in magnetoplasmas. II. J 69D1-448, 139 (1965).

response, application of a general formulation,

large longitudinal retarded elastic deformation

of rubberlike network polymers, 5442. Nonlinear systems, significance of transients and

steady-state behavior, 4377. transducers, Mono.67.

variety of iterative association coefficient, M269,

p. 159. vibration equation, Rayleigh's, 4197A. "Non-LTE and a pure absorption model for the line- blanketing effect, difference between," 6641. Non-medical X-ray and sealed gamma-ray sources, safety standard. Part I. General. H93.

Non-metallic magnetic materials, tables to facilitate the determination of the ferrimagnetic reson- ance linewidth, TN173.

Non-negative matrices, some results, J 65B3-58, 205

(1961). Nonpolynomial functions with indefinite or complex

weight functional; multiple sums, integrals, and derivatives; fractional transformations, Gaussian quadrature, 3217. Nonreciprocity, and time-reversal in microwave circuits, 3668. propagation of VLF radio waves along the magnetic equator, 5509. radio propagation, 6377. Nonresonant absorption and collision diameters in the

the foreign-gas broadening of symmetric top

molecules, 6227. absorption in symmetric-top gases; dependence of

relaxation, frequency on temperature, 3669.

line shape in microwave absorption, transition from resonant, 9119. microwave absorption and electric dipole moment

of NO in the gaseous state, 3266. microwave absorption and relaxation frequency at elevated pressures, 3670. microwave absorption of the vapor, dipole moment

of PC1,F, 6695. Nonsingular embedding of transition processes within

a more general framework of coupled variables, J 65D6-163, 595 (1961). Nonspattering solder flux, 6228. Nonthermal, electrons to auroral absorption of radio waves, 6434. unsaturation, simple method for introducing; action of zinc dust and sodium iodide in N, Ndimenthylformamide on contiguous, secondary

sulfonyloxy groups, 6580A.

velocities within loop priminences, I. Loop prominences and coronal condensations, 6835. Nonuniform fields, precession equation of spinning

particle, 6303. Non-uniformities in semiconductor sheet resistivity, four-point probe measurement, 6082. Noon critical frequency of the F2 layer over the magnetic equator, enhancement of the lunar tide, J 66D5-220, 601 (1962). Normal, approximation to the chi-square and noncentral F probability functions, 3671. congruence subgroups of the modular group, 5510. congruence subgroups of the t x t modular group,

5511. EPr matrices, 3270A.

fluid, wave modification in liquid helium, 9136.

function, Tauberian, 4417. 628
functions, the Montel property, and interpolation

in H°, 5512. matrices in some problems in algebraic number

theory, 1081A. modes of a lattice of oscillators with many reson- ances and dipolar coupling, 3672.

paraffins, an analysis of the solid phase behavior, J 66A3-158, 241 (1962). parahydrogen, properties, 6317. propyl chloride, microwave spectrum, 5775. random variable, 4547. subgroups and free subgroups of the modular

group, 6090. subgroups of genus one of the modular group, complete description, 5869. subgroups of the modular group which are not congruence subgroups, 6892. trichromatic vision and dichromatic vision repre- senting a reduced form of normal vision, 6342.

vision, relation between normal trichromatic vision and dichromatic vision, representing reduced

form, 6342. Normal phase variations, 16 kc/s signals from GBR

observed at College, Alaska, TN206-5.

18 kc/s signals from NBA observed at College, Alaska, TN206-4.

18 kc/s signals from NBA observed at Boulder,

Colorado, U. S A., TN206-3.

18 kc/s signals from NBA observed at Frankfurt, Germany, TN206-1.

18 kc/s signals from NBA observed at Maui, Hawaii, TN206-2.

Normality, powers of normal random variable, 4547. Norms, external radiation, problems in the application, 5595. Nose, whistler dispersion as a measure of magnetosphere electron temperature, J 69D11-574, 1417 (1965).

whistlers, 4419. Notation system, Hayward linear experience with, 9018. line-formula, coordination compounds, 6548. Notch geometry on tensile properties of annealed

titanium at 100°, 25°, -78°, and -196°C, ef- fect of, 3194. Notched-disk memory, 874B.

Note, algebras, 3121. antipodal focussing, TN182.

attenuation function for propagation over a flat layered ground, 5882.

"baffled piston" problem, J 65B3-57, 203 (1961).

bivariate linear interpolation for analytic functions, 3267. concerning the excitation of ELF electromagnetic waves, J 65D5-154, 481 (1961).

condition of matrices, 94A.

contingency tables involving zero frequencies, 5150. domain conversions of BaTi03 , 5152. diurnal phase changes of waves for long paths,

5151.

E-field and H-field losses for ground based antennas, 5153. four-body system, 5515. galvanomagnetic and thermoelectric coefficients of tetragonal crystalline materials, J 67A4-218,

293 (1963). generalized elliptic integral, J 68B1-108, 1 (1964). heat of vaporization of chlorotrifluoroethylene (C2 F3 C1), 775A.

heights of the different IGY types of E8 , 4433. insulated loops antenna immersed in a conducting medium, J 68D11-428, 1249 (1964). "interferometric measurement of vibration amplitudes," 6229. inversion of matrices by random walks, 370A.

Kubela method of measuring water absorption of

leather, 4793. modular groups, 5154. multipliers of difference sets, J 69B1&2-138, 87

(1965). normal matrices, 3936. observations on reference electrodes for fused salt systems, 5514. pairs of normal matrices with property L, 628A.

particle velocity in collisions between liquid drops and solids, J 64A6-71, 497 (1960).

partition function, 6230. persistent meteor trails, 1419A. phase velocity of VLF radio waves, 3937. propagation of certain LF pulses utilized in a radio navigation system, TN118 (PB161619).

propagation of electromagnetic pulses over the

earth's surface, 4434. quadrature formulas, 5881. quiet day vertical cross sections of the ionosphere along 75° west geographic meridian, 3267A.

radiation conductance of an axial slot on a cylinder, J 69D3-482, 447 (1965). "radiation imaging technique for thermal conductivity measurements above 1,000°C", 4792. regarding the mechanism of UHF propagation be- yond the horizon, 3388. resonance method of measuring the ratio of the

specific heat of gas Cp/Cv, 776A.

scattering of electrons from atomic hydrogen, 3122. subgroup of the modular group, 5513.

test of the equivalence theorm for sporadic E

propagation, J 64D4-67, 347 (1960). theory of cavity ionization chambers, 6893. thermal degradation of polytetrafluoroethylene as a first-order reaction, J 64A6-73, 513 (1960). Nonuniform width, waveguide, VLF propagation in the

earth-ionosphere, 5851. Nonuniformly spaced arrays, method of synthesizing,

6603. North Atlantic Area 1953-1960, radio propagation,

5620. NRL solar Lyman-Alpha results, 3922. Nu vibration of methane, in condensed oxygen, nitro- gen, 5516. NU3 lines of HCN, broadening, due to argon, carbon

dioxide, and hydrogen chloride, 5216. Nuclear, atomic excitation, electron scattering, 6030. chemical rockets, liquid hydrogen, 3602.

collective model, dynamic theory, 6002.

data, TN289.

detonations, interpretations of early magnetic

transients caused by high-altitude, J 69D8-549,

1179 (1965). detonations using the VLF phase shift technique,

detection of high altitude, 5281.

dipole moment, quadrupole effects in vinyl chloride, microwave spectrum structure, 3648.

dipole transitions, phenon induced, 8939.

electron research, electromagnetic cross sections, 6023.

electronics, 3673. environment, TN313.

instrument modules, standard, 6391. Nuclear explosion, high-altitude, July 9, 1962, long lived

effects in the D region after, 6182. high altitude, July 9, 1962, observations of syn- chrotron radio noise at the magnetic equator,

5528. Johnson Island Observed in Peru on July, 1962,

5316.

starfish high-altitude, geomagnetic effect, 6252. Nuclear explosions, geomagnetic and ionozpheric phenomena, 3219.

high-altitude, VLF disturbances caused by trapped 629
beta rays from the decay of neutrons, J

68D1-325, 117 (1964). study of long-range VLF propagation, the use of electromagentic signals, 9099. techniques for detection of high-altitude, 9057. Nuclear instrumentation, TN276.

magnetic moment of Pr141 from the hyperfine struc- ture of doubly ionized praseodymium, 6894;

6895. magnetic relaxation of the impurity nucleus in dilute ferromagnetic alloys, 6232. magnetic resonances of ^GA and "Ga in galliumsubstituted yttrium iron garnet, 6234. magnetic resonances, solute, primary lead alloys, 9012. moment of Ni01

, 4795. moment of Ni61 from nuclear resonance studies in steady external magnetic fields, 5518. moment of tantalum-181 in KTa03 , magnetic reso- nance determination, 3620.

optical model analysis of neutron elastic scattering for calcium, J 66A5-174, 389 (1962).

origin, particular reference to a pulse of ; propagation of the ground wave electromagnetic signal, 8962.

photoeffect, giant resonance, 5001. photoeffect in deformed nuclei, 4796. photoeffect in holmium and erbium, 5028. physics and cryogenics, 4020. Physics Section, NBS, 5520.

potentials, velocity dependence, 4275. radiation standards of importance to the National Atomic Energy Program, TN283.

reactions, shell model treatment, 9005. shielding constant, diamagnetic, and to the self- energy of the charge distribution of the scatterer, sum rules relating coherent X-ray

scattering data, 5714.

size determination by neutral-pion photoproduction, 8901. spin couplings in 'EPB^Fj, relative signs, 8988A.

spin relaxation in low-temperature liquids, 3267B.

spin transitions in antiferromagnetic KMnF3 , ultra- sonically induced, 6517.

test, U.S.S.R. high-altitude, VLF phase disturb- ances, 5848.

tests, U.S. 1962 high-altitude, VLF anomalies ob- served at State College, Pa., J 68D1-326, 125

(1964).

2'-pole deformation, possibility of the measurement,

6258. weapons, shielding against gamma rays, neutrons, and electrons. A review and bibliography. Mono.69. weapons, structure shielding against fallout radiation, Mono.42. Nuclear magnetic resonance, bulk nickel samples, 6896. lead alloys, 6233. metal powders at low temperatures, 5517. Ni61 in dilute alloys of nickel in cobalt, 4794. Pb207

, lead-indium alloys, knight-shifts and line widths, 5439. RbMnFa, 6897. study of syn-anti isomerism in ketoximes, 3938. tantalum metal, 3674. Nuclear orientation, 5519. experimental aspects, 3772. methods, 3640. paramagnetic substances, 4213. Nuclear resonance, coupling constants in saturated

aliphatic systems, 4910. hyperfine field in dilute alloys of nickel in iron, 5521. InU5 in a non-cubic environment, absence of pro- nounced quadrupole effects, 5898.

spin-echo study of Eu163 in EuO, 6898.

studies, steady external magnetic fields, nuclear moment of Ni61

, 5518. study of gallium-substituted yttrium iron garnet,

6899. study of hyperfine fields in nickel-rich nickel-cobalt

alloys, 8900. Nucleate, and film pool boiling design correlations for 02 N2 and He, 8902.

boiling of hydrogen, 8903. Nucleation, case of con-current homogeneous and

heterogeneous : Initiation of spherulite growth,

6804. characteristics of static liquid nitrogen and liquid hydrogen, 6235.

ice, photolyzed silver iodide, 6123. Nuclei, complex, low-energy photoproduction of neutral mesons, 3607. deformed, absorption and scattering of photons,

4466. deformed, nuclear photoeffect, 4796. deformed, scattering of photons, 3756. empirical rules for predicting ground-state spins

of light, 6038. 7 rays, scattering, TN83 (PB161584).

heavy, damping of giant resonance, 6675. heavy, form and angular distribution of proton groups at about Q-0 Mev in the proton spectra

(d, p) reactions, 5364.

light (Z = l through 10), tables of electron radial functions and tangents of phase shifts, Mono.81.

neutral meson photoproduction complex, 4786. odd-A, dynamic collective theory, 6710; 9072.

oriented, a He3 crystat for performing experiments,

5134. oriented crium-141, angular distribution of beta

particles, 3813A.

oriented, experimental study of beta decay using

the radiations, TN93 (PB161594).

oriented Ho105

, interaction of 350 keV polarized neutrons, 6453; 6807. photodisintegration of light, 5561.

2s, Id shell, calculations of energy spectra, 5219. Nucleon interactions, S-wave hyperon, and SU3 symmetry, 6415. Nucleophilic reagents, reactions of polyfluorobenzenes, J 67A5-237, 481 (1963). Nucleus, holmium, direct observation of the optical anisotropy, 6699. impurity, in dilute ferromagnetic alloys, nuclear magnetic relaxation, 6232. 99.5% Ni-O.5% C alloy, pressure dependence of the

internal field at the MCo, 8957. Nuclides, five gamma-emitting, for emission rate, TN71

(PB161572).

radioactive, nineteen, issued by the National Bureau of Standards, half lives of materials used

in the preparation of standards reference materials, M260-9.

Nuclidic masses and atomic weights, new scale, 4789.

Null, method, new absolute, for the measurement of magnetic susceptibilities in weak low-fre- quency fields, 5146; 5501. type pressure transducer of high reproducibility for accurate gas phase PVT measurement, J

69C1-182, 27 (1965). Nulling-method, two-channel, measuring attenuation constants of short sections of waveguide and

the losses in waveguide joints, 6573.

Nullstellenstaz, Hilbert's proof, 1240A. Number dye systems, low atomic, ionizing radiation measurement, 6837. elements, total photonuclear cross sections for low

atomic, 9117. 630
maximum, zeros in the powers of an undercomposable matrix, 5017. secondary electrons, determination of the probability distribution, 5986; 6689. sensitometric properties, and structure of developed

grains, 6333.

theoretic calculations, J 69B4-164, 335 (1965). Number, bounds for class, 6614. random, 2278A.

transference, pure molten sodium nitrate, 5827. Numerical, and statistical analysis, a computer pro- gram, OMNITAB, H101. approach to the solution of radio diffraction problems, J 67D6-298, 685 (1963).

calculations for reflection of electromagnetic waves

from a lossy magnetoplasma, TN205.

computation of the temporal development of cur- rent in a gas discharge tube, J 67B1-92, 41

(1963). computation, time-dependent properties of iso- topically disordered one-dimensional harmonic

crystal lattices, 5522. evaluation and formulation of a set of two-phase

flow equations modelling the cooldown process, TN301.

evaluation of thermal radiation characteristics of

diffuse cylindrical and conical cavities, a note, J 710C2-224, 139 (1966).

interpolation, differentiation, and integration, AMS55.

investigation of the equivalent impedance of a

wire grid parallel to the interface between two

media, J 66D1-169, 7 (1962). maps of ionospheric characteristics, methods of applying, J 66D6-225, 649 (1962).

results based on the theory of radio wave propagation over inhomogeneous earth, J 68D7-380, 827 (1964).

results for the surface impedance of a stratified conductor, TN143 (PB161644).

simulation of ionospheric wave interaction experi- ments, TN325.

solution of the frequency equations for the flexural vibration of cylindrical rods, J 64B4-39, 237

(1960).

solutions, convolution-hypernetted chain integral equation for the pair correlation function of a

fluid, I. The Lennard-Jones (12.6) potential, 5524.

solutions, convolution-hypernetted chain integral equation for the pair correlation function of a

fluid, II. The hard sphere potential, 5523. values of the path integrals for low and very low

frequencies, TN319.

Numerical analysis: accuracy of Monte Carlo methods in computing

finite Markow chains, J 64B4-36, 211 (1960). alogorithm and rapid interpolating functions, 3986.

analog-digital diffential analyzer, 3135. another extension of Heinz's inequality, J 65B2-51,

129 (1961). approximations and interpolating functions, 3986. bivariate linear interpolation for analytic functions, 3267. bounds for the P-condition number of matrices with

positive roots, J 65B1-42, 13 (1961). bounds of a one-parametric family of matrices,

2657.

cayley's parameterization, 3117A. comparison theorems for symmetric functions of

characteristic roots, J 65B2-49, 113 (1961). computational problems concerning the Hilbert matrix, J 65B1-44, 19 (1961). congruences for the partition function to composite

moduli, 4014.

construction and application of a class of modular

functions, II, 3166. construction of Hadamard matrices, 3332. convergence of asympotic solutions of linear dif- ferential equations, 1430A.

convergence of Gauss' alternating procedure in the method of least squares, I, 3272. convergence of the Rayleigh quotient iteration for computation of characteristic roots and vectors, 3273.

digital electronic computers in biomedical science, 3181. Gaussian quadrature of nonpolynomial functions with indefinite or complex weight functional; multiple sums, integrals, and derivatives;

fractional transformations, 3217. geometrical theorems for abscissas and weights of Gauss type, 4297. graphical diagnosis of interlaboratory test results, 3223. graphical evaluation of analytical results, 3224.

inclusion theorems for congruence subgroups, 3231.

linear differential equations of the second order with a large parameter, 3241. lower bounds for eigenvalues of Schroedinger's

equation, 4157. lower bounds for eigenvalues with application to the helium atom, 3242. machine methods for finding characteristic roots

of a matrix, 253A. modular forms whose coefficients possess multiplicative properties, 3263. neighbor sets for random walks and difference equations, 1782A. non-harmonic Fourier series, 630A. normal and integral implies incidence, 3921. note on normal matrices, 3936. note on the condition of matrices, 94A.

note on the inversion of matrices by random walks, 370A.

orthonormalizing computation, 3964. permanent function as an inner product, 4369.

relation between the permanent and the determinant, 4208. spectra of second-order differential operators, 1099A.

Sylvester's law of inertia, 3123A.

Tchebycheff approximations by functions unisol- vent of variable degree, 4337. thermal environment of occupied underground

spaces with finite cover using a digital computer, 6236. zeros of intrapolynomials with some prescribed

coefficients, 4384. Numerical methods, computer program for ionospheric mapping, TN181.

ionospheric mapping, TN337; 3594. ionospheric methods, 5040. mapping, handbook for CRPL ionospheric predictions based on, H90.

representation of diurnal and geographic variations of ionospheric data, 8993. Nylon, biaxially stressed oriented, polymer compression: visual observations, 6298. o O atoms with NO and NO-., mass spectrometric study

of the reactions, 6195. O II and O in lines from measurements on shock- heated plasmas, relative oscillator strengths,

6344. 0-2 transition of CO in condensed oxygen, nitrogen, and

argon, J 68A3-281, 331 (1964). 02 , vibrationally excited, formed in the flash photolysis 631
of NO*, 6249. 0,0'-diethyl methyl-phosphonothioate and conjugative

properties of the P=S bond, 3874. O-ethoxybenzoic acid, eugenol and zinc oxide hydro- genated rosin, physical properties of cements,

6290. 0

+ +02 ->02+ +0, reaction, thermal energy, laboratory measurement of the rate, 6824. 02 and N2 by % and 1 Mev protons, excitation, 3207.

O2, N2 and He, nucleate and film pool boiling design correlations, 8902. N2, and NO molecules trapped in solid matrices, emission spectra, 3527. Objects, precision refractometry of small lens-shaped,

8953. Oblate planet, invariant properties of the spheroidal

potential, J 70B1-165, 1 (1966). spheroids used in ferrimagnetic resonance measurements, TN221.

Oblique-incidence ionograms (a digest), an atlas, J

65D1-100, 35 (1961).

incidence ionograms, effects of magnetic disturbance, 5314.

incidence, propagation at over cylindrical obstacles, J 64D4-63, 311 (1960).

incidence, pulse movement at 100 kc, 5525. incidence receiving antenna array for a relative ionospheric opacity meter, TN78 (PB161579). ionograms in frequency utilization, 6490. magneto-ionic propagation in inhomogeneous media, J 69D9-564, 1297 (1965). propagation of groundwaves across a coastline, J 67D6-295, 617 (1963) ; J 67D6-296, 625

(1963); J 68D3-344, 291 (1964).

Obsecurities, oscillator noise, 5955; 6237. Observation and analysis of transequatorial propagation, J 68D11-429, 1251 (1964). 6300 A arc in France, the United States and Australia, 4797. charge storage in the surface states of silicon, 5296. decomposition multiply charged ions into singly charged fragments, 6698. FeO in absorption by flash heating and kinetic spectroscopy, 6238.

field ion microscope: condensation of tungsten on

tungsten in atomic detail, 6651.

fixed, interval, 4603. F-layer and sporadic-i? scatter at VHF in the Far

East, J 65D1-107, 93 (1961). galvanic currents, during outdoor exposure of an

iron-nickel cell, 5369. NPG VLF transmissions at Tracy, California dur- ing path equinox, J 69D4-500, 651 (1965).

optical anisotropy of the holmium nucleus, 6699.

optically forbidden transitions in the continuum

of the rare gases by electron energy loss measurements, 6239. products of ionic collision processes and ion decomposition in a linear, pulsed time-of-flight mass

spectrometer, 8905. VLF phase, solar flare ionization in the D region

of the ionosphere, 5849.

visual, high pressure transitions, 5125. Observations, alouette topside sounder satellite of spread-F, 6388. carbon monoxide and oxygen on tantalum with the

field emission microscope, 6240. carbon on tantalum, field emission, 5357. CRPL, studies of Alouette, 6406A.

chemiluminescent reaction of nitric oxide with

atomic oxygen, 4196. combination, 4283A; 4901A.

conjugate, of solar proton events: delayed iono- spheric changes during twilight, 6655.

copper deposits on single crystals of copper, 4298.

dislocation loops in deformed copper, 5527.

dislocation sources in stainless steel, 8904.

dislocations, Mono.59, p. 35. dislocations and surface features in corundum

crystals by electron transmission microscopy, J 69A3-346, 271 (1965). earth-ionosphere cavity resonances and their in- terpretation in terms of a two-layer ionosphere

model, J 68D11-418, 1177 (1964).

2.89 Mc/s equivalent antenna temperatures at the auroral zone, 4299; 4920.

first, from the fixed-frequency topside sounder

satellite; ionosphere explorer I satellite, 6161. growing crystals of argon, 4922.

infrasonic, May 16, 1964, volcanic explosion on the

island of Bali, 6803. infrasonic pressure waves related to ionospheric disturbances and geomagnetic activity, auroral-zone, 5209. ionosphere over the South Geographic Pole, 3268. Jupiter at 8.6 mm, J 69D12-590, 1560 (1965). Mars at 12.5-cm wavelength, J 69D12-600, 1580

(1965). metal distribution, 4921.

optical, pressures induced in polymers, 5547. photometric, the airglow during the IQSY, 5564. pressures induced in polymers, optical, 5547. radio astronomy, with 8.4 104 m

2 50 Mc/s antenna

of the Jicamarca radar in Peru, 8972. radio emission from the planets Mercury, Mars, and Saturn at wavelength of 8 mm, J 69D12-

596, 1576 (1965). radio wave phase characteristics on a high-fre- quency auroral path, J 66D3-197, 291 (1962). radiosonde, and mountain slope comparison, 6544. reference electrodes for, fused-salt systems, 5514;

5526.

results from the "hiss recorder" an instrument to continuously observe the VLF emissions, J

67D5-290, 569 (1963).

satellite scintillation, at Boulder, Colorado, 6358. severe weather on May 19, 1960, 4909. short-duration cosmic noise absorption events in conjugate regions at high magnetic latitude, 6375. surface weather, comparison of observed atmospheric radio refraction effects with values, J 67D3-262, 273 (1963) ; 5250. synchrotron radiation decay, 6095. synchrotron radio noise, magnetic equator, follow- ing the high altitude nuclear explosion of July

9, 1962, 5528.

theoretical calculations, experimental, leading to a

model for the lower ionosphere, 5350. twilight sodium emission—1 : from a southern

hemisphere, 6262. variety of high geomagnetic latitudes, conjugate

point, 5970. very-low-frequency phase, studying the lunar tidal variations in the D region of the ionosphere,

5713.

visual, stressed biaxially oriented nylon, polymer

compression, 6298. 1.35-cm water-vapor line, J 69D12-599, 1580

(1965). Observatory, Fritz Peak, methods of calibration for airglow photometers, 5480. Jicamarca radio, large 50 Mc/s dipole array, 5768. Leander McCormick, interferometer test of the

26-inch refractor, 6146.

report, annual, from the NBS spectroscopy, 5201;

5919.

report, annual, research at JILA, 5200. 632
report—Joint Institute for Laboratory Astrophysics of the National Bureau of Standards and

University of Colorado, Boulder, Colorado,

6241.

solar, requirement, within the NBS, 5642. Observed, atmospheric radio refraction effects with

values predicted through the use of surface weather observations, 5250. attenuation rate of ELF radio waves, J 65D5-153, 475 (1961).

effects of the nuclear explosion over Johnston

Island, Peru on July 9, 1962, 5316. exposure of an iron-nickel cell, galvanic currents,

5369.

line shapes of collective excitations in Al, Be, and

Ge, 6242. plasma intensities into their radial distribution, data processing system for the automatic

transformation, 5982. variations in the amplitude scintillations of the

Cassiopeia (23N5A) radio source, 3675. wavelength shifts produced in electrodeless dis- charge tubes and predicted stark-effect shifts

in the spectrum of neutral germanium, 5977. Observer proposal, field trial of the 1959 CIE supple- mentary standard, 6069. Observing station, method for determination of the height and geographical position of an auroral

arc, 5140. time patterns, solar-flare frequency, 9010. Obstacle gain and shadow loss, comments on the flyer, 5244. gain measurements over Pikes Peak at 60 to 1,046 Mc, 1421A.

Obstacles, diffraction by smooth conical, J 64D4-64, 317

(1960). Obtaining data in the Weissfioch-Feenberg node-shift

technique, automatic method, 6591. integral and fractional multiples of a given radi- ance, 5163; 5652. internal junction characteristics of a transistor for use in analog simulation, 4798. ionospheric N(h) profiles, and their bearing on the structure of the lower F region, some results of a new method, 5678; 6380. range of current densities with a resistive cathode,

6865. small amounts of narrowly classified particles, sieve techniques, 6366. Occlusion of complete dentures caused by a pipe habit, 5228. Occupied underground spaces with finite cover using

a digital computer, numerical analysis of thermal environment, 6236. Occurrence, minor and trace elements in portland cement, BSS2, Part 1. short-duration cosmic noise absorption, events in- side the southern auroral zone, 5778. sporadic E, 5029. sporadic E during the IGY, 5030. Occurring in the gas-phase radiolysis, proton transfer

reactions, 6320. Ocean waves, sound, 4873.

Octitol, 5290.

3-octulose, 5290. Odd A nuclei, dynamic collective theory, 6710; 9072. low levels, new, neutral erbium, 6886. Odometers, report on technical investigation, TN195.

Off-axis, Raman resonator, coherent Raman effect, 5951. resonator, stimulated Brillouin scattering, 6404. OH, 18 cm spectrum, 6014. radicals in flames, fluorescence and rotational re- laxation, 3544A.

(

2 2+ ), rotational transfer in the fluorescence spec- trum, 3298. Ohio State University, Columbus, Ohio, Minutes of the Meeting of the Triple Commission for Spectroscopy, June 12, 1963, 6215. State University Radio Observatory, Columbus,

Ohio, J 68D5-364, 647 (1964).

Oil, baths, controlled temperature, for saturated stand- ard cells, TN141.

baths for saturated standard cells, 4799. extended rubber, chromatographic analysis of pe- troleum fractions used in, J 66A2-152, 189

(1962).

fuel, distribution systems, slow-flow meters, TN196.

manometer, interferometric, vacuum measurements, 4569.

Olefinic alditols, method for synthesis, TN274.

Olefins, condensed, oxygen atom reactions, 6278; 6279. condensed, reaction of ground state oxygen, 6336. double bond isomerization of, by hydrogen atoms

at —195°, 3334. four-carbon, solid, hydrogen atom addition, 5392. gaseous H atom-condensed, system; surface reaction-olefin diffusion model, 4745. hydrogen atom addition to: relative rates at the two carbon positions and derived heats of formation of several alkyl radicals, 6785. Omega minus, 5537. OMNIFORM I : general purpose machine program for

the calculation of tables of functions given

explicitly in terms of one variable, TN125

(PB161626). OMNITAB. A computer program for statistical and

numerical analysis, H101.

One, dimensional, Brownian motion, analyticity and

probability properties, J 65B4-64, 251 (1961).

disordered, harmonic crystal lattices, numerical computation of time-dependent properties of

isotopically, 5522. model of a solid, coefficient of thermal expansion and Young's modulus, 5238. model of polymer adsorption, 6554. scattering, phase shift method, 4222. hop whistler mode signals, man-made at 18.6 kilo- cycles per second, variations in phase path,

5844. hundred-kilometer level, diurnal and seasonal vari- ations of the atmosphere, 5999. mans opinion, common language, 5543. pan two-knife balance systems, minimization of the arrestment error, J 67C3-133, 227 (1963). parameter exponential model, 6743.

particle transitions and correlation in quantum mechanics, J 69A2-338, 167 (1965). picofarad air capacitor, experimental 350-kv, 5910. rank, application to Whittaker functions, on the

solutions of second-order differential equations having an irregular singularity, 8910. ten-millionth of an inch, 1435A. year trial for new voltmeter standards, 5545. O-nitrophenol and, constants of, 4-nitro-m-cresol from

5 to 60 deg, 5766. Opacity meter, ionospheric, relative, oblique incidence receiving antenna array, TN78 (PB161579).

Opalescence, critical, spectral structure of, binary mixture, J 69A6-373, 523 (1965). polystyrene solutions, 4556. Open-probe thermocouple control of radio-frequency

heating, 6266.

shells, several, interaction between configurations,

6805. Opening angles of electron-positron pairs, 5546. Operating a calibration laboratory, M248, p. 213. characteristics of Zener reference diodes and their measurements, 6467. 2450 MHz, microwave discharge cavities, 6868.633
Operation and design of the ceilometer computer, TN64

(PB161565).

phase sensitive detector, 6885. rotary positive displacement meter, 5813. Operational characteristics, the calibration of inductive voltage dividers and analysis, 5737. information retrieval system in the field of cryogenics, 5194. Operator decompositions of the form B*B, 4731. new differential, pure wave type, 6552.

scattering, three-particle, classical gases, 5541.

translation, multipole matrix elements, 6877. Operators, decomposable differential, fundamental solu- tion and Huygens' principle, 9079. Opinion, one mans, common language, 5543. Opportunities in dental research, 3696. Opposed-jet methane-air diffusion flames, effects of al- kali metal vapors and organic halides, 5411. Optic angle, apparent, and absorption spectrum of muscovite sheet mica on the basis of color and

absorption spectrum, J 67A4-220, 309 (1963). angle of mica, telescope for measurement, J 65C2-

63, 125 (1961).

Optical absorption, measurement of ozone, 3248. spectrum of carbon in solid argon, 4815. spectrum of K^ReCle, magnetic properties, 4159. Optical anisotropy, holmium nucleus, direct observation,

6699. approximation for functions prescribed at equally spaced points, J 65B2-47, 99 (1961).

calibration of vibration pickups at small amplitudes, 4209. character recognition, 4816. coincidence, statistical vocabulary construction and

vocabulary control, M269, p. 177. corrected, pyrometer readings, Mono.30. depolarization and scintillation measurements over a terrestrial path, 6269. design, automatic, 5932. detection of microwave transitions between excited

electronic states of CN and the identification of transitions, 6270. detection of microwave transitions in electronically excited CN produced by a chemical reaction, 4818. distance measurements for the fluctuating atmospheric index of refraction, 6660.

electron, studies of low-pressure gases, Mono.66. electron, study of low-density gas flow, 3431. glasses in the infrared, refractive indices and trans- mittance, 3293. harmonics, frequency ratio, 4645. heterodyne detection of the forward-stimulated

Brillouin scattering, 6271. image, electron, pulsed atomic beam in flight, 5088. instrumentation for the biologist: microscopy, 8924. interferometer, electronic fringe interpolator, 1011B.

investigations of film formation and removal on

gold anodes in acidic oxalate solutions, 6272.

kinetic methods, studies of acids, bases, and salts by EMF, TN271.

magnetic properties absorption spectrum of K2 ReCle, 4069. magnetic spectra of 6is-A/-propylsalicylaldiminato copper (II), J 70A1-380, 1 (1966). maser propagation, atmospheric breakdown limi- tations, J 69D11-576, 1431 (1965).

materials, proposed standard for measuring and

reporting physical properties, 8964. measurements on thin films of condensed gases at low temperatures, 3275. metallography, M260-10.

methods, 4819. methods for negative ion studies, 3698. observations, pressures induced in polymers, 5547.

path difference, for a photographic objective, J 67C4-142, 311 (1963). path difference, optical T-bench method for measurement, 5549.

polarization, precise measurement, M256, p. 113. pumping methods, measurement of weak magnetic

fields, 3631A.

Optical constants, aluminum, 3697. aluminum in vacuum ultraviolet, 4817. infrared, M256, p. 119. iron in the visible region, 8923. thin films from the characteristic electron energy

losses, 6268. vacuum ultraviolet and electron energy losses, 6267. Optical properties, beryllium in the ultraviolet from

electron energy absorption, 8925. calcium fluoride, a redetermination, 5160. inhomogeneous films, M256, p. 41. relation of emittance, J 67C3-132, 217 (1963). surfaces by ellipsometry, measurement of the thick- ness and refractive index of very thin films, J

67A4-227, 363 (1963).

thin films on transparent surfaces by ellipsometry;

internal reflection for film covered surfaces near the critical angle, J 68A6-307, 601 (1964). Optical pyrometry, a theory and method, Mono.41 ; 5071. quenching- of photoconductivity near the band edge

in CdS, 8926. radar using a corner reflector on the moon, 8927.

radiation, excitation of, by high power density radio beams, J 69D1-444, 77 (1965).

rotation, 4820. scanner, digitizing pictorial information with precision, 5991.

scintillation; survey of the literature, TN225.

spectra of impurities in molecular crystals, inter- molecular forces, 3584. spectrometry, X-ray fluorescence spectrometry, and

electron probe microanalysis techniques, June

1964 to June 1965, TN272.

strain gage for use at elevated temperatures, 192A.

system, application of cooled IR detector, 6605. system, local curvature of wavefronts, 6181. T-bench method, for measurement of optical path

difference, 5549. thickness gradients, determination, from a far dis- tance, 5285. transmissivity and characteristic energy losses, 3700. Zeeman effect, zero-field theory, and microwave

transition probabilities, 4903. Optical studies, formation and breakdown of passive

films formed on iron single crystal surfaces

in inorganic inhibitor solutions, 5548. high pressures, 6273. high pressures using diamond anvils, 4821. Optical study, boundary-layer transition processes in a

supersonic air stream, 3699. formation and stability anodic films on aluminum,

M256, p. 213. thin absorbing film on a metal surface, M256, p. 25. Optically forbidden states in the ionization continuum by electron impact, 6748. forbidden transitions in the continuum of the rare

gases by electron energy loss measurements,

6239. observed inner shell electron excitation in neutral Kr and Xe, 6274. pumped magnetometers and related experiments in high magnetic fields, 6275.

Optics, absorbing film on metal, M256, p. 25. inhomogeneous films, M256, p. 41. metrology, and radiation, precision measurement

and calibration, H77, Vol. III. Optics, geometrical, convergence coefficient for the whistler case, J 68D2-334, 211 (1964). 634
gyrotropic bodies, J 69D3-470, 349 (1965). low frequency propagation, diffractive corrections, 3503. whistler propagation, J 68D11-425, 1225 (1964). Optimal character of the (s, S) policy in inventory

theory, 787A.

periodic inspection programs for randomly failing equipment, J 67B4-104, 223 (1963). Optimization of the Czerny-Turner spectrometer, 6276. Optimum, Mono.95. antenna height for ionospheric scatter communication, 3701.

distribution, accumulation of calibration errors, 5176. estimators, parameters if negative exponential dis- tributions from one or two order statistics, 5550. frequency deviation in an FM system over a scat- ter-propagation path, 8918. output power of RF excited helium-neon gas lasers

at 632.8 nm, gas mixtures and pressures, 6769. reception pattern of the Beverage wave antenna at very low frequencies, J 67D4-274, 387 (1963).

Orbit, accurate intermediary, theory for satellite as- tronomy, J 65B3-56, 169 (1961). accurate reference, of an artificial satellite, zonal harmonic perturbations, J 67B4-103, 191

(1963).

Orbital, molecular, 4428.

Orbits, satellite, new approach to the theory, 3265.

satellite, spherical method, 5797.

Orcinol, aniline acetate, and bromination methods, in- terlaboratory comparison of. Determination of pentosans, 3497. Order differences of their coefficients, zeros of poly- nomials and fractional, 5864. Orders in the density, generalized master equation for quantum-mechanical systems, 6102. Ordinance equipment, H91. Ordinary ruby laser, characteristics of Raman laser

excited, 6628. Ore concentrates, M260-8. Organic anions by bone char, 3295. chemistry: radioactive carbohydrates, sugars in so- lution, aldol condensations, molecular structure, synthesis of selected compounds, air pol- lution studies, reference materials (organic), July 1964 to June 1965, TN274.

denture base materials, some physical properties,

5676. halides and alkali metal vapors, inhibition of op- posed-jet methane-air diffusion flames, 5411. molecules with nitrogen atoms, 4219. polymers, thermal degration, 4388; 4879; 6501.

solvents, acidity and basicity, 639A. Organic compounds, added, reactions of hot methyl

radicals with. Gas-phase photolysis of methyl

iodide, 6099. presence of, other than hydrocarbons, radiolysis or propane-ds in the, 5625. range below one millimeter of mercury, vapor pressures, TN70 (PB161571).

Organisms, energy and temperature, 6044. Organization, international intercomparisons of radioactivity standards with special reference to such measurements of NBS standards, 3853. national and international, engaged in the standardization of dental materials and therapeutic

agents, work, composition and interrelation, 6647. Orientation, nuclear, 5519. nuclear, methods of, 3640. nuclear, paramagnetic substances, 4213. work function measurements on field emitters, 9141. Oriented cerium-141 and its application to thermal contact at low temperature, gamma-ray distribution, 5757.

chains, some properties of polystyrene networks

formed, 6376. Hoias nuclei, interaction of 350 keV polarized neutrons, 6453; 6807. nylon, biaxially stressed, polymer compression: vis- ual observations, 6298.

single crystals, solution polishing, 9013.

Orifice flow characteristics of liquid nitrogen and liquid hydrogen discharging into a vacuum, 5883. Origin, particular reference to a pulse of nuclear; propagation of the ground wave electromagnetic signal, 8962. Origins, fundamental and satellite band, determination.

Spin-orbit coupling constant of nitric oxide, 6387. O-rings, elastomeric, force and seal evaluation, 5363. Orthobaric densities of parahydrogen, derived heats of vaporization and critical constants, 5779. Orthogonal polynomials, AMS55.

set of individual degrees of freedom for error, an

algorithm for obtaining, J 67B1-89, 19 (1963). Orthonormalizing computation, advances, 3964. Ortho-para hydrogen conversion, kinetics study, 3382. Orthophosphate (hydroxyapatite) , crystalline basic calcium, 3490. Orthorhomic N-paraffin melting properties to very long chain lengths, 5000.

Oscillating magnetic dipole over a two layer ground,

induction, 2597A.

Oscillation of the ionosphere, ionospheric absorption in conjugate regions, 6162.

Oscillations, electrostatic, in the ionosphere, resonance

effects, 6346. ionosphere, hydromagnetic waves and ELF, J 64D6-

96, 650 (1960).

nonlinear, 2647A.

plasma, with collective correlations, 5568. simultaneous geomagnetic and ionospheric, rela- tionship between, J 68D3-351, 339 (1964).

Oscillator, absolute, strengths for Fe I, 5900. harmonic, transition probabilities in a one-dimensional impulsive collision, 3731A. models in unimolecular reactions, 4210. N»+

, strength from arc spectroscopic measurements

using an analog computer, 6231.

noise, obscurities, 5955; 6237. quartz-crystal, measure with an ammonia maser,

3299.

relaxation, using a gated beam tube, 1847A.

two, scan stability, 3895. strength distribution of rare gas atoms calculated

in a central potential model, 4367.

Oscillator strengths, 5094. absolute scale, 5173. continuum, determination of; inelastic electron scattering from rare gases, 6127.

gas-stabilized arc as an emission source for measurement, J 67A6-240, 561 (1963).

lines of Fe I between 2500 and 3200°A, 8928". lines of Ni I, J 69A2-331, 87 (1965). lithium isoelectronic sequence, wave functions, 5856. O II and O III lines from measurements on shock- heated plasmas, relative, 6344.

Oscillators, anharmonic, wave functions, 5126A.

harmonic, relaxation of an isolated ensemble, 3749.

lattice, resonances and dipolar coupling, normal

modes, 3672. quartz, spectrum analysis of extremely low fre- quency variations, 5683. Oscillatory behavior of magnetic susceptibility and elec- tronic conductivity, 3276. currents in the ionosphere, 3276A. phenomena, 4822. systems and arralyzers, resolution limits, J 67A5-

235, 461 (1963). Osmium and ruthenium, vapor pressures, J 68A3-280,

325 (1964). 635
hexafluoride, absorption spectrum and magnetic

properties, 3960. low-spin d4 complexes, magnetic susceptibilities and

dilution effects, 5456. Osmotic and activity coefficients, of tetraethylammon- ium iodide in aqueous solution at 25 deg, 5551.

tris (hydroxymethyl) ammomethane and its hydrochloride in aqueous solution at 25 °C, 8929. Ottawa sand, standard, test method for air-entrain- ment, 3408A. Our measurement system and national needs, 3702. Outdoor exposure, effect, properties of chrome-retanned

leather, 5311. Outgassing, rocket, effects on RF experiments, J 69D9-

555, 1219 (1965).

Outliers, extreme rank sum test, 5529. samples size three, treatment, J 70B2-174, 141

(1966).

tables of one-sided percentage points, general application of Youden's rank sum test, J 68B2-

116, 55 (1964). Outline for cooperative action on the determination of X-ray mass attenuation coefficients in the wavelength range from 0.5 to 100 A (25 to 0.12 keV), TN284.

Outlook for machine translation, 3854. Output, common, a multiple isolated-input network, J

64C3-40, 225 (1960). power, optimum, of RF excited helium-neon gas

lasers at 632.8 nm, gas mixtures and pressures,

6769.

pulses, bidirectional, multivibrator provides, 6878. signal /noise ratio in a frequency modulation and

a pulse-code modulation frequency-shift sys- tem, 4997; 5751; 6446. Overdense bounded magnetio-plasma, microwave propagation, 6210. Overvoltage, laboratory investigation, 3239A.

metallic particles, 3122A.

Oxalate solutions, acidic, optical investigations of film formation and removal of gold anodes, 6272. Oxalic acid/acetic acid /water: its significance in oxalic acid crystal growth; phase study of the system,

J 67A4-224, 347 (1963). Oxidation, air-blown asphalts, 4995. alpha and beta-D-glucose with bromine, 4211.

asphalt, and carbon arc, relationship between intensity, 6474. asphalt, effect of carbon-arc intensity, 6440. asphalt flux with oxides of nitrogen, 8931. asphalt in the presence of ozone, 6277. aldoses with bromine, J 66A3-157, 233 (1962).

aldoses with iodine, J 67A6-241, 569 (1963). bitumen, influence of radiant energy source, 6128. D-glucose with iodine, 4572. formation, high area carbon films, 5365; 5754.

heat, and radiation, 4847.

heat, gaseous sulfur dioxide with gaseous chlorine, J 67A5-231, 427 (1963). high polymers, 4823. htdrocarbons on particulate matter, TN274.

inositol with nitric acid, J 68A3-275, 287 (1964).

kinetics of silver in sodium chloride, electrode potentials in fused systems, 6022. metals in salts. Silver in sodium chloride, 4824.

polycyclic, aromatic hydrocarbons. A review of the

literature, Mono.87.

polycyclic, aromatic hydrocarbons, bibliography, TN274.

products of hexahydroxybenzene (benzenehexol)

,

cyclic polyhydroxy ketones, J 67A2-202, 153

(1963). products of pyrene, TN274.

rate of iron, 4619. rates of air-blown asphalts by infrared spectro- scopy, 4575.

room temperature of iron at low pressures, 6352. simultaneous chemical and electrochemical, 9016. sulfur dioxide, heats of solution, 5760. vacuum ultraviolet reflectance of evaporated aluminum, 5542. Oxide, aluminum and thorium, 4730. aluminum, decoration of dislocations, 5744. aluminum, flame-spraying, studies, 3801. binary rare earth, systems, Perovskite-type compounds, 3707. binary, systems, 3987. cadmium oxide-niobium, phase equilibria in the system, 4220. chromic, etch pits, 6745.

crystals, symmetry splitting of equivalent sites in, and related mechanical effects, J 67A4-216, 281

(1963). deuterium, and thiocyanate in the forearm of man,

transcapillary exchange rates, 898A.

deuterium, 5 to 50 deg, dissociation constant of

acetic acid, 6704. deuterium, 5 to 50 deg, second dissociation constant

of deuteriophosphoric acid, 6360. eugenol, zinc, type cements, 4690. eugenol, zinc, type filling materials and cements,

6559.

films formed on copper single crystal surfaces in water. III. Effect of light, 6468.

films formed on copper single crystal surfaces in pure water. I. Nature of the films formed at room temperature, 3343.

films formed on copper single crystal surfaces in water. II. Rate of growth at room temperature,

4368.

films on copper crystals, M256, p. 201. fluorescence of nitric, rotational, vibrational and

electronic energy transfer, 5650.

glasses, evaluation of, for use as infrared materials,

3537.

glasses, infrared dispersion, 5408. hydrogenated rosin, zinc, o-ethoxybenzoic acid and

eugenol, physical properties of cements, 6290.

iron, recording tape, experimental and theoretical investigation of the magnetic properties, 3539. magnesium, experimental atomic scattering factors, 6749.

nickel, thin film resistors for low pressure shock wave detection, 3665. niobium pentoxide, phase equilibrium relations in the binary system barium, J 65A4-115, 337

(1961).

nitric, purification and vapor pressure, 4250.

nitric, spin-orbit coupling constant of. Determination from fundamental and satellite band origins, 6387.

nitric with atomic oxygen, chemiluminescent reaction, 4196. phase equilibria in the system aluminum oxide- tungsten, 8935. pure aluminum, grown by the Verneuil process, 6730. semiconductors, electronic energy bands in SrTiOa,

6033.

theoretical electromotive forces for cells containing a single solid or molten, 9111. tungsten oxide, phase equilibra in the system aluminum, 8935. whiskers, aluminum, electron microscopy and dif- fraction, 6729. white paint pigments, polarographic analysis of white lead and zinc, 9092. zirconium sulfate, method for freezing zirconium of common impurities, 482A.

Oxides, ceramic, 1200 degrees to 1800 degrees, equip- ment and method for measuring thermal emittance, 6863. 636
metal, compilation of the melting points, Mono.68.

metal, in a solar furnace, 3432. nitrogen in the atmosphere of Mars, evidence, 3538. nitrogen, oxidation of asphalt flux, 8931. phase equilibria studies in mixed systems, other and

rare earth, 6283. rare earth, refractivities, 6341. rare-earth, phase equilibria in systems involving: Part I. Polymorphis of the oxides of trivalent rare-earth ions, J 64A4-53, 309 (1960). Part II. Solid state reactions in trivalent rare- earth oxide systems, J 64A4-54, 317 (1960). rare earth, phase equilibria research, 4221. refractory, metals, and metalloids, electrophoretic

deposition, 3526.

several, exponential temperature dependence of Young's modulus, 4084.

silver, higher, 3230.

trivalent cations, solid state reactions involving, J 65A4-116, 345 (1961). Oxidization atmospheres, platinel II thermocouples,

5081. Oxidizing atmospheres, 5081. 2-Oxo-l,3-bis (phenylhydrazones) , TN274.

Oxygen, air, argon, carbon dioxide, carbon monoxide,

hydrogen, nitrogen, and steam, tables of ther- modynamic and transport properties, 3806. boiling liquid, bulk density, 4804. carbon monoxide on tantalum, field emission microscope used for observations, 6240. compressed, microwave absorption, 3644. emission, method for determination of tropospheric temperature structure from ground-based measurement, 6549.

fuel sides of the reaction zone, inhibition of diffu- sion flames by methyl bromide and trifluoro- methyl bromide, J 65A4-118, 389 (1961). ground state, condensed olefins, 6336. hydrogen, nitrogen, and refrigerants 12 and 11, choking two-phase flow literature summary and

idealized design solutions, TN179.

interaction with platinum, 6806.

lines in an arc plasma, shifts and widths of some

stark broadened, 5656.

liquid and crystalline argon and nitrogen, vacuum

ultraviolet absorption spectra, 6523.

liquid, boiling, experimental determination of the bulk density, 5346. magnetoplasmas, wave interaction, J 69D4-496, 617

(1965). metastable atom production through photodetach- ment, 8932. microwave spectrum, ground-based passive probing, J 69D9-553, 1201 (1965). molecular, on the emission spectra of atomic

oxygen-acetylene flames, 4050. molecules, metastable, on ozone and airglow, 6451.

multiplets, six experimental transition probabilities, 6063. new Rydberg series in molecular near 500A, 6887. nitrogen and hydrogen, idealized solutions for choking, two-phase flow, 5673. nitrogen, condensed, nu vibration of methane, 5516. nitrogen, hydrogen, and helium, boiling heat transfer, TN317.

nitrogen ion-molecule reactions of atomspheric importance, including 0

+ +N2NO+ +N, some

measured rates, 9020. over Mn2 03 -Mn3 04 at various temperatures, equilib- rium pressure, 6046. over Mn02-Mn»03 at various temperatures, equilib- rium pressures, 6739. partial pressure warning instrument, J 67C1-119, 47 (1963). plasma (discharge), momentum collisions in, for thermal electrons, J 69D2-455, 213 (1965).

pressure and temperature, dependence of the elec- trical conductivity and thermoelectric power

of pure and aluminum-doped rutile on equilib- rium, 5278.

reaction, with unkilned bone char at low temperatures, 4882. relationship to the thermal noise emission spectrum

of the atmosphere, width of the microwave

lines, 9139.

solid, absorption spectrum, 3329.

solid, and copper, condensed at very low temperatures from a gas discharge, reaction between,

3742.

solid, at 20 °K, reaction of hydrogen atoms, 3291.

solid beta, 4948. sulphur in the manganous-sulfate-bath calibration of neutron sources, correction factor for fast neutron reactions, 9063. thermophysical properties, low temperatures, bib- liography, TN137 (PB161638).

vibrationally excited, formed in the flash photolysis

of N02, 6249. Oxygen, atomic, chemiluminescent reaction of nitric oxide, 4196.

electric fields in the ionosphere and the excitation of the red lines, 5317. microwave Zeeman spectrum, 3261. negative ion of, photodetachment cross section, 3710. reaction of carbon monoxide, 811A.

spectroscopy, NSRDS-NBS4, Vol. I. Oxygen atoms NO and N02 , a mass spectrometric study

of the reactions, 6195. 02 , NO, and N02 , mass spectrometric study of the

isotopic exchange rate, 6192. reaction with condensed olefins, 6278; 6279. Oxytrichloride, vanadium, (vandyl (V) chloride), 3903. Ozonation of asphalt flux, 6280. Ozone and airglow, influence of metastable oxygen molecules, 6451. H atoms and N atoms, atomic flame reactions, 5206. oxidation of asphalt in the presence of, 6277. photooxidation of asphalts in the presence, J 68C4-

176, 297 (1964) ; 6288. sunspots, 5552. terms of its optical absorption, measurement, 3248.

P(l) and R(O), shift of the, infrared lines of HC1

perturbed by noble gases, 9006. P-A amplifiers, transistor, 3891. F-p-T values for neon from 27° to 300°K for pressures

to 200 atmospheres using corresponding states theory, 5603. Packaged goods in the United States, development of weights and measures control, 3826. products, aerosol, progress report, 6313. Packages for self-service selling, standardization of dimensions, 6395. Packing inequalities for circles, 5553. Packings and covers in a family of sets, 4553. Paint assemblies, fire-retardant and conventional, 4333. pigments, application: Polarographic analysis of titanium (IV)—EDTA complex, J 69C1-187,

67 (1965). pigments, white, polarographic analysis of white

lead and zinc oxide, 9092. Paints, fire retardant, BSS3.

Pair, anion Frenkel, calcium fluoride, energy of the formation, 6738. correlation function for a hard sphere fluid, ap- proximations, 5927.

correlation function of a fluid, numerical solutions of the convolution hypernetted chain integral equation, 5523; 5524. 637
correlations in closed-shell systems, 6281. production as an analyzer of circular polarization of gamma rays from neutral particle decays,

4825. production, high-energy bremsstrahlung; radiative

corrections, 8971. production, measurement of linear photon polarization, 4752. spectrometer, two-crystal scintillation, 6516. Pairs of nonsingular matrices, J 70B2-177, 155 (1966). opening angles of electron-positron, 5546. Palladium, gazllium, alloys as dental filling materials,

6098. (Pdm), third spectrum, J 67A2-197, 87 (1963). vapor pressure, J 66A2-149, 177 (1962). versus platinum-15% iridium thermocouple, 4888. Pan American standards of mutual benefit to Latin America and the U.S., 4212. Panel discussion on modulation, remarks presented,

5637. Panels, sheet-stringer, bonded and reveted, 1169A. Panoramic ionospheric resources, design, J 65D6-165, 629 (1961). roentgenography, present status, 4244. Paper, "a liquid-medium-step-function pressure cali- brator," 5956. chromatograms, solid scintillation counting of H

3 and C", 3302. chromatography, comparisons of writing inks, 209A.

"cosmic-ray cut-off rigidities and the earth's magnetic field," 8990. determination of starch, 3177.

discussion, lambda varience and its application to TAPPI standard T 414 m-49 for internal tearing resistance, 5923.

discussion, measurement of short duration impulse

voltages, 5998. discussion "predicting compressive strength from

the properties of the fresh concrete," 5994.

effect of speed on the tensile test, 3195. internal tearing resistance, 4494. internal tearing resistance of, TAPPI standard T414 m-49, effectiveness of a reference material in reducing the between-laboratory variability, 5202. measurement of the smoothness, 3630.

soft X-ray microscopy, 6367.

test data from pendulum and inertialess testers, 3277. wax, determination, 4033. Papermaking by electroforming, watermarks, 9135. Papers, comparative pH measurements on, by water

extraction and glass electrode spot tests, 4005. containing fluorescent brighteners, 4705. symposium on collision phenomena in astrophysics, geophysics, and masers, TN124 (PB161625).

Parable of the fisherman, 5554. Parabolic antenna at a frequency of 1040 Mc/s, 4746.

constraints, all-integer programming algorithm,

5188. cylinder functions, AM555.

Paraelectrics, application to dielectric susceptibility of;

classical diagram technique for calculating thermostatic properties of solids, 6635. Paraffin data, thermodynamic properties of polyethylene

predicted, J 67A3-210, 233 (1963).

Paraffinlike solids, dumbbell model for dielectric dis- persion, 6545. Paraforpal fields, colorimetry, 5953; 5954. Parahydrogen, correlation of experimental pressure- density-temperature and specific heat data,

5742.

dielectric polarizability of fluid, 5989. experimental programs, Mono.94.

liquid, dielectric constant, TN144 (PB161645).

liquid, freezing to 350 atmospheres, 5590. measurements of viscosity, 6857. normal, properties, 6317. orthobaric densities of, derived heats of vaporization and critical constants, 5779. provisional thermodynamic functions, TN130 (PB

161631). saturated liquid, 5047. speed of sound in fluid, 9033. surface tensions of normal, TN322.

survey of current NBS work on properties of, 6414. temperatures from 15 to 90°K and pressures to 340

atm., 5046.

virial coefficients 24 to 100°K, J 65C4-76, 231

(1961).

Parallel plane test capacitors, on the measurement of

dielectric losses and surface conductivity of

dielectrics, J 68A2-267, 185 (1964).

plate capacitor, TN336.

reversible permeability measurement techniques from 50 kc/s to 3 Gc/s, J 67C3-137, 259 (1963). Paramagnetic crystals, calculation of the higher order

dipole-dipole effect, J 68A1-259, 113 (1964).

dispersions, relaxation times, 4375.

dispersions, spin lattice relaxation time, 5798. properties, salts, very low temperature data, 5853. substances for nuclear orientation, 4213. Paramagnetic resonance, electron, primarily 3d wavefunctions of the tetrachlorocuprate ion, 6731.

electron, tetrahedrally coordinated copper++

: the tetrachlorocuprate ion, 6029.

free hydroxyl radical, 3278. phenomena, 4826.

spectra, electron, of zinc-dropped copper acetate monohydrate, 6733. spectra of active species. Blue material from

hydrozoic acid, 3279. spectrum, electron, 6is-8-hydroxyquinolate-copper

(II) dihydrate, 6732. spectrum, electron, some iris-complexes of copper,

6443.

static susceptibility, influence, 6796. Paramagnetism, spin, on superconductivity, 6797. Parameter, a new turbulence, J 67D6-293, 605 (1963).

B, energy, for strong blast waves, TN155.

Ginzburg-Landau, temperature and mean free path

dependence, 6425. meteorological, for radioclimatological purposes, J

68D7-383, 851 (1964).

radial integral, 5828. treatment, impact, vibrational excitation, 6125. Parameters a and /3 in the spectra of the iron group,

4214. electron-density profiles from topside ionograms, TN315.

Hyper-Poisson distributions, estimation, 6744.

line, and computed spectra for water vapor bands

at 2.7n, Mono.71.

molecular, ethane, 4781. negative exponential distributions from one or two

order statistics, optimum estimators, 5550. network, not assuming reciprocity or equality of the waveguide or transmission line characteristic impedances, relationships between different kinds, 6343. polydispersed hydrometeors in the X 0.01 to X 10 cm range, complete scattering, J 69D6-523, 893

(1965). radiometeorological, J 67D6-291, 589 (1963); Mono.92.

second virial coefficients, kihara, for cryogenic

fluids and their mixtures, 5434.

statistical, related to the Nakagami-Rice probability distribution, J 68D4-358, 429 (1964). 638
Parametric amplification with a low-frequency pump,

4215.

amplifiers, J 64D6-96, 751 (1960). behavior of an ideal two-frequency varactor, 4827;

5241.

devices, J 68D5-365, 661 (1964). Parameterization, Cayley's, further extension, 3117A.

3aratellurite, new mineral from Mexico, 3703. Paraxial rays, two, method for localized variation of the paths, 5141.

Jarent cyclohexane ion, modes of decomposition of the

neutral excited cyclohexane molecule and re- actions, 6770; 9080.

ion and neutral excited pentane molecule, a study

of decompositions. Gas-phase radiolysis of n- pentane, 6100. Parity unfavored transitions in forward scattering, 6062.

Partial confounding in fractional replication, 4216.

differential equations of Brownian motion of a free

particle, 4198.

fiudity, regime of, hypervelocity cratering data, and a crater depth model, 5396. (110) pole figures, relation of, to thickness and

microstructure of electrodeposited copper, 5634. pressure warning instrument, oxygen, J 67C1-119, 47 (1963).

Partially coherent electromagnetic fields, J 68D4-359, 460 (1964).

Participation, solvent, anionic polymerization of styrene,

6370.

U.S., international standardization, 5835.

Particle exchange reactions and energy exchange re- actions for the study of isotope effects, 5865. model, independent, and the metastable levels in the continuum, 5474; 6206. shape and size distribution in a reinforced polymer,

6442.

size on low-temperature heat capacities, 4617. spinning, nonuniform fields, precession equation,

6303.

velocity in collisions between liquid drops and solids, note J 64A6-71, 497 (1960).

Particles, 5.3 meV alpha, from platinum and monel

metal, experimental study of the backscattering, 6592.

fast charged, Monte Carlo calculations of the penetration and diffusion, 5495. heavy charged, tables of ranges and energy losses, 6421.

metallic, overvoltage, 3122A. narrowly classified, sieve techniques for obtaining

small amounts, 6366. polonium-210 alpha, nitrogen, argon, and an argon- methane mixture, absolute measurement of W,

6577.

silver alloy, dimensional changes of dental amal- gam associated with strain release, 6694.

solar, and interplanetary fields, 5661. Particular observations on diurnal phase variations of VLF transmissions received in Paris, J 68D1-

312, 21 (1964).

Partition function, note, 6230. function, congruences, composite moduli, 4014. Partitioned matrices, reduction formula, J 64B3-33,

171 (1960).

matrices, special types, J 65B1-41, 7 (1961). Parts per million, method for comparing two nearly

equal potentials, 5476. Paschen and Balmer continua in a quiet prominence,

4204. Passage central meridian, ionospheric disturbance, re- lation of solar active regions, 5635.

electric current across a liquid junction, measure- ment of the reversible heat effect, 6020.

times, mean first, dissociation of diatomic molecules, 5464. Passive and active reflectors, J 68D4-359, 515 (1964). communications satellites, review—1960-1962, J

68D4-359, 511 (1964).

films, formed on iron single crystal surfaces in inorganic inhibitor solutions, optical studies of the formation and breakdown, 5548. networks and antenna arrays, analogies between

theories, 6599. #

radio observations of Mercury, Venus, Mars, Sat- urn, and Uranus, J 69D12-593, 1563 (1965).

Past, present and future, electrodeposition of alloys, 6725. Patent applications, searching, patterns of thinking by manual and machine-assisted methods, 8934. Path antenna gain, and comments on properties of 400 mcps long-distance tropospheric circuits, 5555.

difference, optical, optical T-bench method for measurement, 5549. integrals of LF/VLF wave hop theory, J 69D11-

580, 1469 (1965).

loss measurements versus prediction for long dis- tance tropospheric scatter circuits, 4217. optimum frequency deviation in an FM system over a scatter-propagation, 8918.

terrestrial, optical depolarization and scintillation measurements, 6269. VHF and UHF signal characteristics observed on

a long knife-edge diffraction path, J 65D5-149, 437 (1961). Paths, a note on diurnal phase changes of VLF waves,

5151. fading on microwave line-of-sight, 6067.

fluctuations in a laser beam over 9 and 90 mile

paths, 6073. land and sea, mixed, curves for ground wave

propagation, 5273.

trees, and flowers, 8133. whistler ray, computation, J 65D5-155, 485 (1961).

Patient, pressure-indicator-paste patterns in duplicate dentures made by different processing technics, 8958. restoration of complete dentures inadvertently warped, 8997. Pattern, fracture, modulus of rupture of glass in relation, 6217. kikuchi, from a silicon wedge, 6171. recognition, J 64D6-96 676 (1960). recognition by moments, digital, 4585. recognition problems, discussion, 3188. synthesis with a flush-mounted leaky-wave antenna

on a conducting circular cylinder, J 66D6-236,

783 (1962).

Patterns, diffraction powder, standard X-ray, C539,

Vol. 10; Mono.25, Sect. 1 to 4. interference, reverberent sound fields, 6809. mortality, eight strains of flour beetles, 6874.

picture, and English text, computer interpretation, 5965. pressure-indicator-paste, duplicate dentures made

by different processing technics for the same

patient, 8958.

solar-flare frequency and observing-time, 9010. thinking in searching patent applications by manual and machine-assisted methods, 8934.

utilization of scientific and engineering manpower

in the U.S. and certain foreign countries, 5709. Pb207

, nuclear magnetic resonance of, in lead-indium

alloys, knight-shifts and line widths, 5439. PCUF from the nonresonant microwave absorption of the vapor, dipole moment, 6695. Peak A-C to D-C comparators, calibration, 6623. AC-DC voltage comparator for use in a standards

laboratory, TN280. 639
pulse voltages, low and medium, measurement

standards, J 70C1-216, 13 (1966).

transfer, TN280.

solar cycle, the total electron content of the iono- sphere content at middle latitudes, 5806. "Pearls," explanation for the apparent polarization of some geomagnetic micropulsations, 5911. micropulsation, dynamic spectral characteristics, 6711.

Peculiarities, ionosphere in the Far East. A Report

on IGY observations of Es and F-region scatter, 3704. ionosphere in the Far East; sporadic E and F

region scatter, 3705. Pedestrian queueing, analysis, J 67B4-105, 229 (1963). queueing problem, 4808. queues, effects of a distribution on gap acceptance

functions, J 68B1-113, 31 (1964). Peek-a-boo information retrieval technique for a personal reference file, 5104.

principle to information retrieval, 4479.

Pellet preparation, KBr, alteration of the Muscovite

absorption spectrum, 5185. Pendulum and inertialess testers, paper test data, 3277. viscometer, absolute torsional, analysis, 3421. Penetration and diffusion, of fast charged particles, Monte Carlo calculations, 5495.

diffusion of X-rays, 3280. protons, alpha particles, and mesons, 5556. Pens, ball, and inks, composition, properties and be- havior, 1291A.

Pentaborate hydrates, alkali, calorimetric properties, J 68A4-286, 381 (1964). Pentafluorophenyl alkyl and vinyl ethers, J 70A3-399,

233 (1966). Pentahydrate, cupric sulfate, spin-lattice relaxation

time, 6796. Pentane molecule, neutral excited, a study of decompositions of the parent ion. Gas-phase radiolysis of w-pentane, 6100. Pentanone, photoelimination of ethylene, 6286. Pentosans, determination. Interlaboratory comparison

of the aniline acetate, orcinol, and bromination

methods, 3497. Pentoses-2-C-14, TN274. Penumbra region, extension of Fock theory for currents, J 69D9-561, 1257 (1965).

People, influence experimental results, 6118. Percentage points of the Beta distribution, TN215.

Perception, auditory, a mechanistic model for the limits, 5878. Perchlorate, lithium, formation of monomeric amides,

4539. potassium, heat of composition, J 65A1-84, 63 (1961). potassium, mechanism of the isothermal decomposition, 3634. Perchloryl fluoride additions, effect on flame speed of methane, J 65A6-134, 513 (1961). Perfect elastic fluids, elastic stress-strain relations, 6722. Perfluorobenzene (hydroheptafluorostyrene) a general method for synthesis of highly fluorinated

styrene, synthesis of perfluorostyrene and (2, 2-difluorovinyl), 5723. Perftuorocyclobutane, gaseous, heat capacity, 727A.

Perfluoroheptane, gamma irradiation, J 64A4-49, 269

(1960). Perfluoromethyl groups, inclusion, lattice of copolymers

of tetrafluoroethylene and hexafluoropropylene,

J 69A5-369, 481 (1965). Perfluorophenyl ether and related polymers, J 68A3-274, 277 (1964).

Perfluorostyrene, synthesis, (2, 2-difluorovinyl) per- fluorobensene (hydroheptafluorostyrene) a general method for synthesis of highly fluori- nated styrenes, 5723. Performance, barium fluoride film hygrometer element on radiosonde flights, 5557. design of multirange current transformer standards

for audio frequencies, 9068.

characteristics of split-type residential air-to-air heat pumps, 4828.

characteristics of turbine flowmeters, 4218; 4829. Ebert spectrometer, 4953. heating, air-to-air heat pumps at two Air Force housing projects, 6111A.

lenses made from inhomogeneous glasses, 9089. multichannel radio communications systems, re- quired signal-to-noise ratios, carrier power and

bandwidth, 5641. point level sensors in liquid hydrogen, 6469. predictions for single tropsopheric communication

links and for several links in tandem, TN102

(PB161603).

tropospheric communication links, singly and in tandem, 5585. Performing experiments with oriented nuclei, He3 cryostat, 5134. Periodic fading of VLF signals received over long paths during sunrise and sunset, J 68D1-313, 27 (1964) . heat flow, hollow cylinder rotating in a furnace with a viewing port, 5558. motion, vortex formation and resistance, 3368A.

Periodicals received in the Library of the National Bureau of Standards, 1961, Mono.57; October

1965, M274.

Periodicity modulo m and divisibility properties of the

partition function, 3706. Periods, long, constancy of a modified Weston standard

cell, 5971.

Perlite for cryogenic insulation, 5559. Permanent and the determinant, relation between, 4208. Permanent function as an inner product, 4369. some theorems, J 69B3-147, 159 (1965). Permanental minors and permanents, inequalities, 6794. Permeability, TN336. measurement techniques from 50 kc/s to 3 Gc/s, J 67C3-137, 259 (1963). measurements, reversible, air core, primary radio frequency permeameter, 5186. space, 6677. Permeameter, magnetic, equations for radiofrequency, J 67C1-121, 69 (1963). radio frequency, primary, air core, for reversible permeability measurements, 5186. Permeation rates of electrolytic hydrogen and deuterium through iron, J 67C2-124, 111 (1963).

Permissible, lowered, dose levels on atomic energy operations in the United States, 3838. Permittimeter, radio-frequency, 3393. Permittivity, TN336.

Perovskite-type compounds in binary rare earth oxide systems, 3707. Perseulose, acetamido derivative, J 69A3-349, 291

(1965) . Personal side of a research project, 5780. Personnel dosimetry, use of photographic film, 5837. not trained in electronic maintenance, maintenance

of marine electronics equipment, 6841. requirements for calibrating laboratories, industrial practices, M248, p. 169. requirements for calibrating laboratories, military

practices, M248, p. 165. Perturbation corrections, first-order, Hartree-Fock ap- proximation for helium, 5360. 640
method in a problem of waveguide theory, J 67D2-

255, 189 (1963). Perturbations in the phase of the low-frequency ground

wave, a few observations, J 65D4-143, 393

(1961).

rotational in CN, 4903. rotational intensities observed in CN bands emitted by reactions of organic molecules with nitrogen atoms, 4219. Perturbed lines in the violet spectrum of CN, chemical and magnetic enhancement, 5231. Petroleum gas, liquefied, liquid-measuring devices, ex- amination. A manual for weights and measures officials, H99.

products, analytical standards for trace elements, Mono.54.

Peru, effects of the nuclear explosion over Johnston

Island on July 9, 1962, 5316. radio astronomy observations with 8.4 104 nr 50 Mc/s antenna of the Jicamarca radar, 8972. pH, BSS4.

concept and determination, 3163.

control, amine buffers, 3967. determinations, standards, 135 A; 316A; 1010A.

dilution upon, measurement, 1066A.

electrometric determination, 1697A; 3520. mechanical preparation on the strength of glassfiber paper, 998A.

related terminology, report on the standardization,

3751. standard for blood and physiologic media, 3939. standards, establishment, fundamental approach, 362A.

standards from 0 to 95 °C, revised values, J 66A2-

150, 179 (1962). theory and practice, determination, 5985.

ph, measurement, 5772.

alcohol-water solvents, 4709.

electrodes, 4057. interpretation of, in alcohol-water solvents, 5423. 50% methanol, reference buffer solutions, 8987. papers by water extraction and glass electrode spot

tests, comparative, 4005. Phase and amplitude, contrast microscopy in partially coherent light, J 69C3-200, 199 (1965).

diversity in over-water transmissions at two micro- wave frequencies, TN307.

statistical distribution of, multiply scattered field, J 66D3-191, 231 (1962). Phase, angle master standard for 400 cycles per second, J 64C3-41, 229 (1960). boundaries in F. C. C. binary alloys, relation of the stacking fault energy to segregation at stacking faults, 8988. changes in very-low-frequency propagation induced by an ionospheric depression of finite extent, 6247. changes, note on diurnal, waves for long paths,

5151.

control of station WWV, 4894. diagrams for ceramists, 6282.

fluctuation statistics, J 68D9-397, 983 (1964).

gas, radiolysis, proton transfer reactions, 6320.

gas, triplet-state energy transfer from acetone to aliphatic aldehydes, 6513.

instability, tropospheric relay link, 5560. integral methods, error analysis, J 69B4-157, 271 (1965); J 69B4-158, 291 (1965).

lock captured by tyratron ringing circuit, 4830. meter, precision, 4851. microwave signals on the same line-of-sight path

at different frequencies, 5267. modulated calibrator for testing phase meters, 4831. obpervations, very-low-frequency, studying the

lunar tidal variations in the D region of the

ionosphere, 5713. path, variations, man-made one-hop whistler mode

signals at 18.6 kilocycles per second, 5844.

radiolysis, gas of propane, 5758.

radiolysis propane, gas. Effect of pressure and

added inert gases, 6448.

relations between iridium and the sesquioxides in

air, J 69A3-343, 245 (1965).

sensitive detector, new mode of operation, 6885.

shift, impendance and attenuation, standards and

measurement, 6396.

shift method for one-dimensional scattering, 4222.

shift technique, detection of high altitude nuclear

detonations using VLF, 5281.

shifter, analysis of a differential, 5916.

shifter, differential microwave, 5872.

shifts and intensities, effects of configuration in- teraction, 4053.

solid, direct and inert-gas-sensitized radiolysis and

photolysis of methane, 6696. steps and amplitude fading of VLF signals at dawn

and dusk, J 69D11-577, 1435 (1965). study of the system: oxalic acid /acetic acid /water;

its significance in oxalic acid crystal growth,

J 67A4-224, 347 (1963). systems, line-of-sight, analysis of the effects of ground reflection, 6589. time variations in VLF propagation over long dis- tances, J 68D11-424, 1223 (1964). transformation of silver iodide, kinetics and mech- anism of the low-cubic to hexagonal, 6169.

transition, first order, gas of long thin rods, 5361. vapor, growth kinetics of potassium and mercury

crystals, 6526.

variations, diurnal, of GBR (16 kilocycles per

second) observed over a path of 720 kilo- meters, 6349. variations in VLF propagation, 6284.

velocities and attenuation distances in the iono- sphere, J 69D6-514, 819 (1965).

velocity of VLF propagation in earth-ionosphere waveguide, measurement, J 68D12-431, 1269

(1964) . Phase equilibria system, aluminum oxide-tungsten oxide, 8935. cadmium oxide-niobium oxide, 4220.

equilibria research systems, involving the rare

earth oxides, 4221. involving the rare-earth oxides: Part I. Polymor- phism of the oxides of the trivalent rare-earth

ions, J 64A4-53, 309 (1960). involving the rare-earth oxides: Part II. Solid

state reactions in trivalent rare-earth oxide systems, J 64A4-54, 317 (1960). niobium pentoxide-boric acid, J 70A1-382, 11 (1966). niobium pentoxide-germanium dioxide, J 70A1-381,

5 (1966). rare earth oxides: Part III. The Eu2 03-In203 system, J 65A5-123, 429 (1961). vanadium oxide-niobium oxide, J 69A2-333, 119

(1965) . Phase equilibria studies in mixed systems of rare

earth and other oxides, 6283. Phase equilibrium, 5055.

relations in the binary system barium oxide-niobium

pentoxide, J 65A4-115, 337 (1961).

relations in the binary system bismuth sesquioxide- niobium pentoxide, J 66A6-180, 451 (1962).

relations in the Sc203 -Ga2 03 system, J 67A1-190,

19 (1963).

relationships in the system Gd2 03-Ti02 , J 69A3-344,

255 (1965). Phasemeter, digitized, J 68C4-167, 223 (1964). 641
Phases, tetragonal, general type 10M2 Og»90M2Os apparently isostructural with Ta2 05, 2Nb2 05, 6426. Phenidone-thiosulfate monobaths, characteristics of dosimeter films process, 6629. Phenomena, color, polymer fracture, microscopy, 5484. convection, plants in still air, 5261.

critical-point, 6666.

frost, cryo-surface, analysis, 5917. investigating electrochemical, at an electrode, gal- vanostalametry, new technique based on the negative pressure of liquids, 5370. natural electromagnetic, below 30 kc/s, 6221.

oscillatory, 4822. paramagnetic resonance, 4826. polymers, fracture, 3214. Phenomenological theory, overvoltage for metallic particles, 3122A.

thermal diffusion in liquids, 4692. Phenomenon in silver iodide, pressure-induced trapping,

6312. Phenon induced nuclear dipole transitions, 8939. Phenylenediamines, measurement of photochemical

degradation in certain plastics by color reactions, 6199. Phenylhydrazone, D-mannose-l-i, 4721. Phenylhydrazones, tautomerism, TN274.

Philosophical influences on radiation protection standards, 8936. Phosphate, ammonium dihydrogen, growth layers, 6775.

ion from 10 to 40°, dissociation constants of acetic acid and dihydrogen, 8987. Phosphide, thorium, mass spectrometer, 5080. Phosphorescence, benzophenone crystals at 77°K, sec- ond order effects, 9003. fluorescence in biacetyl vapor, 2379A.

fluorescence of trifluoroacetone vapor, 4353. nitrogen and nitrogen-argon deposited films at 4.2°K, 3708. Phosphorus, ionized, neutral, atomic energy levels and

spectra, 3144. Photobeats, terahertz, precise velocity-of-light measurements, 6489. Photochemical, changes in thin-layer chromatograms, TN274; 6285. decomposition of nitroalkanes, 4858. degradation in certain plastics by color reactions with phenylenediamines, measurement, 6199. rates in the equatorial F2 region from the 1958

eclipse, 3709. work in the vacuum ultraviolet region, intense resonance line sources, 6141. Photochemistry, vacuum ultraviolet, 5110; 5111; 5112;

6524; 9127. vacuum ultraviolet, VI. Photolysis of cyclopropane with xenon resonance lines, 5840. vacuum ultraviolet, VIII. Photolysis of butane,

5841. vacuum ultraviolet, VII. Photolysis of n-butane,

6525. Photochromic materials, measurement of radiation dose

distributions, 6854. Photoconductivity near the band edge in CdS, optical quenching, 8926. Photodegraded plastics, use of visible and ultraviolet spectroscopy to identify carbonyl compounds,

9100. Photodetachment, 4832.

cross section for the negative ion of atomic oxygen,

3710.

electron, ions and elastic collision cross sections for O, C, CI, and F, 4627.

I' near threshold, energy dependence, 6039.

laser double-quantum, of 6825. negative ions, double-photon, 5305. oxygen metastable atom production, 8932.

related negative ion processes relevant to aeronomy, a review, 5885. structure spectrum of the atomic carbon negative

ion, 4947. Photodisintegration, bismuth and the lead isotopes, 5031.

light nuclei, 5561. Photodissociation of molecular ions, 6407.

Photoeffect, nuclear, deformed nuclei, 5001. nuclear, gained resonance, 4796. nuclear, holmium and erbium, 5028.

Photoelectric, cross sections of copper, molybdenum,

silver, tantalum, and gold at 662 kev, 3356A. measurement of vibration, 4779. pryometer, NBS, 4927; 5024. Photoelimination of ethylene from 2-pentanone, 6286. Photogrammetric lenses and cameras, calibration at NBS, 5223. Photographic dosimetry, megaroentgen range, 5562. emulsion mosaics, spectroscopic applications, 3781.

film, evaluation of unexpectedly large radiation ex- posures, TN161.

film, radiation beam mapping, 4871.

film, sensitivity, 3-Mev neutrons and to thermal

neutrons, 3865.

film, use, for personnel dosimetry, 5837.

film with processing, megaroentgen dosimetry,

3636. megaroentgen range, 5563. processed, record films for aging blemishes, inspection, H96.

response to Co00 gamma radiation, influence of temperature and relative humidity, J 65C3-72, 203

(1961). response to successive exposure of different types

of radiation, 4223.

strain measuring technique for use above 3,000 F, 4833. X- and gamma-ray dosimetry, 286A.

Photographs, Laue, high-voltage X-ray, characterization of large single crystals, 5738. Photography, color, selection of camera filters, M259.

high-speed, new fast-opening, large-aperture, shutter, J 67C1-120, 65 (1963). high voltage Laue X-ray, large single crystals, 6117. Photoionization, acetylene and acetylene-d2 , mass spec- trometry study, 6193. atoms and molecules, TN131 (PB161632).

heating in the F region of the atmosphere, 4224. mass spectrometric study, 6843; 6845. outer atomic subshells. A model study, 4834. spectra, qualitative feature, 4197. Photoisomerization of the azo dyes in aqueous solution, 3346.

Photolysis, 5032. acetone-ck in the presence of propane-2,2-d2. Decomposition of the n-propyl radical, 4225. ammonia in a solid matrix at low temperatures,

3711. butane, vacuum ultraviolet photochemistry, 5841.

| cellulose in a vacuum with 2537 A light, effects of deuteration and temperature, 6013; 6287. cyanogen azide, matrix-isolation study, 6850. cyclobutane at photon energies below and above i the ionization energy, 8940. cyclopropane, with the xenon resonance lines, vac- uum ultraviolet photochemistry, 5840. dimethylmercury, reactions of methyl radicals in the solid, liquid and gas-phase, 5787. ethane at the argon resonance lines 1067 and

1048°A, 8940A.

ethane at 1470 A, mechanism, 6204. ethyl acetate, from 4 to 500 °K, intramolecular re- arrangements, formation of ethylene, 5424.

ethyl nitrate, primary processes, 5593.

ethyl vinyl ether, 4370. 642
ethylene, 5110.

flash, of NO?, concentrations of vibrationally excit- ed 0= formed, 6249. formation of NF and NF», 6761. formic acid, vapor-phase, 4405. gas phase of azomethane, complicating factors, 5253. gas-phase, cvclohexane in the far ultra-violet, 6770; 90*80. HN3 in inert and reactive matrices, infrared studies

of; infrared spectrum of NH, 6136. HNCO and DNCO, low temperature infrared study

of intermediates, 6184. isobutane, 5111. methyl iodide, gas-phase. Reactions of hot methyl

radicals with added organic compounds, 6099. n-butane, vacuum ultraviolet photochemistry, 6525. 2-pentanone, formation of 1-methyl-cyclobutanol,

4133. 2-pentanone-4,5,5-d3 , 4134. propionaldehyde and the butyraldehydes, 5065.

radiolysis, direct and inert-gas-sensitized, of methane in the solid phase, 6696.

radiolysis of CH3 N2 CH3 and CH3 N2 CH3 -CD3 N2CD3 mixtures, 5032.

radiolysis of methane, effect of pressure, 6009.

radiolysis of 4-methyl-2-hexanone, 4132.

solid phase, of 4-methyl-2-hexanone and sec-butyl

acetate, 4711. vacuum, solid ethane at 77°K, 5108. vacuum ultraviolet, ethane at high temperature,

9128; 9129. vacuum ultraviolet, ethane in liquid-nitrogen solution, 9130. vacuum ultraviolet, water and ammonia, 5112. Photolytic behavior of silver iodide, J 67A4-219, 301

(1963). Photolyzed silver iodide, ice nucleation, 6123. Photometer, absolute light scattering. II. Direct deter- mination of scattered light from solutions, J

68A1-256, 87 (1964). airglow, J 65C4-73, 213 (1961). simple ultraviolet, 3300. Photometers, airglow, methods of calibration, Fritz Peak Observatory, 5480. Photometric observations, airglow during the IQSY,

5564. observations of the twilight glow [OI] 5577 and

[OI] 6300, 3712. sky curves, TN308.

Photometry, absolute, aurora, 3126; 3127.

absolute, light of the night sky, TN214.

absolute, zodiacal light, 9058. aurora, absolute, 3126; 3127. emission flame, 4632.

flame, 4486. projectors at the National Bureau of Standards, TN198.

Photomultipliers, method of cooling-head, 3252. Photon albedo, high energy X-ray, 6112.

dissociation of water: initial nonequilibrium populations of rotational states of OH(2 2

+ ), 4226. energies below and above the ionization energy,

photolysis of cyclobutane, 8940.

flux and total beam energy, determination of differ- ential X-ray, 5283.

linear, polarization by pair production, measurement, 4752. Photoneutron source, absolute calibration of NBS, 5174. Photons, absorption and scattering, deformed nuclei, 4466. absorption and scattering holmium and erbium,

3415.

scattering, deformed nuclei, 3756. Photonuclear cross section, analysis, 3137. data index, M277.

physics, 4227.

reactions, 8941.

total, cross sections for low atomic number ele- ments, 9117. Photooxidation, asphalts in the presence of ozone, J

68C4-176, 297 (1964) ; 6288. changes caused by, some aspects of, infrared spec- tra of asphalts, J 68C2-157, 115 (1964). Photopolarographic behavior of inorganic depolarizers. J 69A6-372, 517 (1965). Photoproduction and other electromagnetic interactions, unitary symmetry, 5834. Photoproduction, low-energy, of neutral mesons from

complex nuclei, 3607. neutral meson, complex nuclei, 4786. nuclear size determination by neutral-pion, 8901. SU(6)w, and meson-baryon scattering amplitudes,

9053. Photoproton cross sections of carbon, 3281. Photosensitized formation, xenon, mestastable nitrogen,

9144. reaction between hydrogen (

2P) atoms and molecular nitrogen, 4835.

unit, theory of energy transfer, 5171. Phototypsetting of computer output, TN170.

Photovoltaic effect produced in silicon solar cells by X- and gamma rays, J 64A4-52, 297 (1960). mode of operation of steady-state response of sili- con radiation detectors to X-rays, J 68A6-318,

683 (1964).

Physical, absorption at low surface coverage, rate, 4373. aspects of irradiation, H85.

biological applications, measurement of neutron

flux and spectra, H72.

characteristics of agar impression materials, 9022.

characteristics of the troposphere, J 64D6-96, 607

(1960). chemical properties of magnetic recording tape, 4452.

entities and mathematical representation, J 65B4-

60, 227 (1961). environment as affected by radiation, 3855.

laboratories, adjustable instrumentation bench,

4477. mechanical properties of electrodeposited copper,

8942. processes in the D-region of the ionosphere, 6289.

quantities, measurement of by radio techniques, J 64D6-96, 605 (1960).

quantities proposed for radiation measurements,

3714. research, 3281A.

science, applications of the Fourier integral, 1267A.

sciences, foreign-language dictionaries, M258.

significance of the Fulcher equation, 6828. standards of emittance and reflectance, 4839. standards, statistical problems, 4315. systems, lumped, oriented linear graphs and analyses, on the connection between the properties, J 69B1&2-136, 79 (1965).

tests and chemical analyses of portland cement, Mono.28.

Physical constants, M268.

conversion factors, AMS55.

fundamental, H101.

general ; recommended unit prefixes ; defined values and conversion factors, M253.

systematic errors, 4336; 4968. Physical equilibria and related properties, hydrogencarbon monoxide system, TN108 (PB161609).

hydrogen-helium system, TN109 (PB161610).

hydrogen-nitrogen system, TN110 (PB161611).

Physical measurement, basic standards, 3815. challenge to science and engineering, 4228. experiment design, 4837; 5565.

pilot of progress, 4836. 643
Physical properties, amalgams, effect of mercury-alloy

ratio, 4049. cements, based on zinc oxide hydrogenated rosin, o-ethoxybenzoic acid and eugenol, 6290. 113 domestic marbles, 4838. monochloro-dichloro, and monobromacetic acids at

1 atmosphere, 4300.

optical materials, proposed standard for measuring

and reporting, 8964. organic denture base materials, 5676. polar winter mesosphere obtained from low-fre- quency propagation and partial reflection studies, J 68D12-436, 1319 (1964).

self-curing resins for repairing dentures, 1484A.

synthesis, and purification of seven twelve-carbon hydrocarbons, J 67A5-236, 475 (1963).

synthetic rubber-based on dental impression materials, 3713. Physics, electron, first 20 years, APS division, 5928. plasma, and astrophysical research at the NBS.

Highlights for 1961, TN116 (PB161617).

plasma, and astrophysics, measurements and standards, TN59 (PB161560).

nuclear, and cryogenics, 4020. photonuclear, 4227.

Section, Nuclear, 5520.

section 9, solid-state, 5664. structure of the upper atmosphere, 6482.

theoretical, summer school, 5717. Physiologic and blood media, pH standard, 3939. Pi electrons, excitation of, in polystyrene and similar polymers by 20-KeV electrons, 5345. Pickups (vibration), microphones and earphones, cali- bration, 6621. Picnometers, two, of increased convenience and precision, J 69C1-178, 1 (1965). Picofarad-1 air capacitor, experimental 350-kv, 5910.

Picric acid in water at 25 °C, spectrophotometric deter- mination of the thermodynamic pK value, J 67A3-211, 241 (1963).

Pictorial information with a precision optical scanner,

digitizing, 5991. structure of Chinese characters, TN254.

Picture patterns and English text, computer interpretation, 5965.

Pictures, delocalized versus localized in resonance en- ergy transfer, 5276. Pienkowsky-type calibration scheme for 521121 weight

series using two knife-edge direct-reading bal- ances, J 68C4-173, 261 (1964).

Piezoelectric coupling, apparatus for the detection of, J 67C3-129, 197 (1963). properties as a function of pressure and temperature, 3498. Pigments, polarographic analysis of white lead and

zinc oxide in white paint, 9092. Pikes Peak, obstacle gain measurements, at 60 to 1,046 Mc, 1421A.

Pilot plant data for hydrogen isotope distillation, 3715. program for mass calibration, TN288.

Pine, southern, plywood, CS259-63. "Pink" after glow of nitrogen in the vacuum ultraviolet, absorption spectrum, 6428. Pioneer in dental research, 5860. Pipe culverts, tapered inlet structures, 6422. exterior corrosion of cast iron, 6066.

habit, changes in occlusion of complete dentures,

5228.

nipples: brass, copper, steel, and wrought-iron, CS5-65.

plastic, and fittings, standards, 4309.

plastic (SDR-PR), polyethylene (PE), CS255-63.

plastic (SDR-PR and class T), acrylonitrile- butadiene-styrene (ABS), CS254-63.

plastic (SDR-PR and class T), polyvinyl chloride (PVC), CS256-63.

stack and drain, loads, 3311. thermoplastic, long-term working stress, 4151.

vent, and fittings, plastic drain, waste, CS270-65;

CS272-65.

vertical, stability of a two-phase annular flow, TN314.

Piping, cyrogenic, system design and insulation, 3489.

Piston, baffled, on transient solutions of the problem, J 65B1-40, 1 (1961).

baffled, some notes on the problem, J 65B3-57, 203

(1961). gage pressure measurements, reduction of data, Mono.65.

Pitfalls in determination of the compressive strength

of concrete, 4840. thermal emission studies, 5566.

Pits, etch, chromic oxide, 6745. Pitting of iron in distilled water, influence of crystallo- graphic orientation, 3232.

Place, radiochemical methods of analysis: today and

tomorrow, 9090.

statistics, 6403. PLACEBO V, materials for, TN281.

IV. Rules, concordance, sample computer generation, TN255.

Plan, geophysical alerts and special world intervals during 1961-1962, 4229.

self-qualification of laboratories, 3716. Planar twin boundary in aluminum, 5567. Planarity of amides, 5122. Plane, complex, error bounds for asymptotic expansions

of special functions, 6740. electromagnetic waves, propagation past shoreline, J 66D3-200, 319 (1962). ground, inhomogeneous, the theory of an antenna,

5804. sources using point source data, dose fields, 5304. wave electron-density irregularities with the equatorial electrojet, 5733. Planetary measurements to planetary radius and rotation rate determinations, J 69D12-616, 1632

(1965). radar, spectral measurement techniques, J 68D9-

403, 1025 (1964).

surfaces, review of radar studies, J 69D12-609, 1617 (1965).

Planets, other, is life possible?, 6165. Planning, better measurement accuracy, 8943. spark, damage in copper, TN321.

Plans for proposed new tables of the thermodynamic

properties of moist air, 8944. Plant growth, synthesis and biological activity of some

quarternary ammonium and related compounds

that suppress, 3325. Plants, in still air, convection phenomena, 5261. spectral properties, 9028. Plasma, arc, shifts and widths of some stark broadened oxygen lines, 5656. across a magnetic field, stochastic theory of diffu- sion, 6405. bodies at the plasma frequency, radar cross sections, J 69D2-458, 231 (1965). boundaries with electromagnetic surface waves,

investigation, 6158. bounded compressible, modes of propagation, 6872. brush cathode plasma—a well behaved, 9060. clad axially-slotted cylinder, radiation, J 67D2-257, 203 (1963).

collective correlation, 4524.

collision frequencies proportional to energy in the radio wave reflection and transmission process, TN164.

collisionless, connection between shielding and stability, 5258. columns, magneto-ionic propagation characteristics, J 66D5-214, 543 (1962). 644
configurations, use of index of refraction as a means for study, 6521. continuously stratified with arbitrary magnetic

induction, reflection and transmission of radio waves, J 66D1-176, 81 (1962). continuum description of a high temperature, 5973. continuum theory, 5974. copper arc, ionization, J 66A2-148, 169 (1962). coulomb collisions on incoherent scattering of radio waves, 6441. covered antenna, electromagnetic properties, J 69D7-530, 965 (1965).

cylindrical, scattering resonances, J 69D10-566,

1321 (1965).

cylindrically stratified, transverse propagation of electromagnetic waves, 6511. dense, electric field distribution, 3516. dense laboratory, microwave whistler mode propagation, 3649. density of the magnetosphere, measuring, 5470.

diagnostics, microwave reflection techniques, TN256.

environment, theory of radiation from a slotted conducting plane, TN223.

equilibrium, electromagnetic fluctuations, J 69D3-

474, 381 (1965). expanding, in a conducting half-space, generation

of an electromagnetic pulse, J 68D2-327, 147

(1964) . hot, transmission and reflection of electromagnetic waves, J 69D5-509, 735 (1965). inhomogeneous lossy, concerning the mechanism of

reflection of electromagnetic waves, J 69D6-

518, 865 (1965).

instability resulting in field-aligned irregularities

in the ionosphere, 5156.

instability, two-stream, source of irregularities in the ionosphere, 5833.

intensities, observed, their radial distribution, data

processing system for the automatic transfor- mation, 5982.

ionospheric, experimental studies of perturbations, J 69D2-456, 219 (1965).

ionospheric, on some nonlinear phenomena, J 69D1-

441, 33 (1965).

isothermal, across magnetic field, nonlinear ambipolar diffusions, 6226.

kinetic equation, collective and collisional correlations, 4140.

layer, admittance of annular slot antennas radiat- ing into, J 68D3-348, 317 (1964).

layers, self and mutual admittances of waveguides

radiating, J 69D2-453, 179 (1965).

linearly graded, on the point of emergence of a microwave beam entering, J 69D2-452, 177

(1965) . media, boundary value problems, J 65B2-53, 137

(1961). media, compressible, radiation from sources, 6326. net charge, 4841. non-equilibrium, magnetic field, diffusion coeffici- ents and microscopic fluctuations, 6866.

oscillations, collective correlations, 5568. physics and astrophysical research at the NBS.

Highlights for 1961, TN116 (PB161617).

physics and astrophysics, measurements and standards, TN59 (PB161560).

plane-stratified, jE7-mode propagation, J 69D4-488,

521 (1965). radiation of electromagnetic and electroacoustic waves, 8908; 8909. radiation patterns from, enclosed cylindrical hypersonic vehicles, J 69D10-567, 1335 (1965). radiowaves, 5172. resonance in the light scattered, 8996. resonance, nature, 8917.

resonances, upper ionosphere, 5569. sheath effects on antennas, an experimental study, J 69D6-516, 839 (1965).

sheath, strongly ionized, radiation and admittance

of an insulated slotted-sphere antenna, J 64D5-

91, 525 (1960).

sheaths, cylindrical, radiation through, J 67D6-301,

717 (1963).

sheaths, electromagnetic wave penetration of re- entry, J 69D2-449, 147 (1965).

sheet, thin, electromagnetic fields of a dipole, 3828;

4351.

sheet, thin, propagation of electromagnetic waves,

3728.

slab, warm, a study of the waves supported, J 69D5-508, 729 (1965).

stratified, continuously proportional to energy and

arbitrary magnetic induction, radio wave reflections, 5623. theory of fluctuations, 6883. theory of incoherent scattering of radiowaves, 5172. unsteady correlations, kinetic equation, 3239. warm, two component, wave propagation, J 69D4-

493, 579 (1965). Plasma, compressible, impedance of a short dipole, J 69D4-491, 559 (1965).

isotropic, resonances of a spherical void, 6347. scattering of electromagnetic and electroacoustic waves by a cylindrical object, J 69D2-461, 247

(1965). theory of a slotted-sphere antenna immersed, J

68D10-412, 1127 (1964) ; J 68D10-413, 1137

(1964). waves circulating around a rigid cylindrical obstacle, J 69D4-492, 567 (1965). Plasma waves, acoustic, field aligned E-region irregularities identified, 5356. index of refraction surfaces, J 69D4-490, 539

(1964) . propagation in "spoke-wheel" magnetic field, J

69D9-556, 1227 (1965). propagation of, in a "spoke-wheel" magnetic field, J 68D3-349, 325 (1964). Plasmas and electromagnetic fields, interaction, J 64D6-

96, 766 (1960). compressive and incompressive, discussion on basic equations with source terms, J 69D2-460, 243

(1965) . cylindrical, electron density profiles in, from micro- wave refraction data, J 69D5-507, 721 (1965).

dense, application of line broadening theory, 4751. derivation of a convergent kinetic equation from the generalized master equation, theory of irre- versible processes, 6495. disturbances produced in, long waves associated

with, J 68D1-316, 47 (1964).

excitation of acoustic waves, J 69D4-495, 609

(1965). semi-conductors, complex conductivity, 3479. shock-heated, relative oscillator strengths of some O II and O III lines from measurements, 6344.

studies, alouette ionic magnetic-field, 5908. warm, cyclotron harmonic, J 69D6-512, 789 (1965).

Plasters, gypsum, exposed to fire, J 66C4-113, 373

(1962).

Plastic drain, waste, and vent pipe and fittings, CS270-

65; CS272-65.

flow and fracture of crystalline solids, Mono.59,

p. 1. impression trays, stability, 4306. pipe (SDR-PR and class T), acrylonitrile- butadiene-styrene (ABS), CS254-63.

pipe and fittings, standards, 4309. pipe (SDR-PR), polyethylene (PE), CS255-63.

pipe (SDR-PR and class T), polyvinyl chloride (PVC), CS256-63. 645
Plastics, 4230; 4842; 5570; 6291.

color reactions with phenylenediamines to measure

photochemical degradation, 6199. dental market, 6292.

effect of gamma radiation on chemical structure, 4048. elastomers, low temperature static seals, 3614. international proposals for testing, 744A.

international standards, 3586.

irradiated, films, structural changes, 3319.

resins, rubbers, fibers, analysis of monomers and

polymeric materials, 3138. standards development by ASTM committee D-20,

3789. standards for—who establishes standards? 3790. standards in government, 4231. standards in the USA, 4310. thermoset, high temperatures, stability, 4307. transparent at elevated temperatures, creep be- havior, 3169.

vinyl chloride, standards, 4940.

visible and ultraviolet spectroscopy to identify carbonyl compounds in photodegraded plastics, 9100. Plate comparator, spectographic, electronic scanning

microscope, J 65C1-50, 1 (1961).

crack, triaxial tension at the heat, 3359.

Platelets, NiBr2 , growth spirals, 6107.

Plates, birefractory, superimposed, J 69C2-190, 103

(1965).

Platinel II, thermocouple, reference tables, J 68C4-174,

263 (1964). thermocouples in oxidizing atmospheres, 5081. Plating, chromium, thermal decomposition of dicumene

chronium, 4523.

electroless, 5323. gun bores, 4232.

specifications, 5571. standards and specifications, 4843. Platinum and monel metal, experimental study of the backscattering of 5.3 meV alpha particles, 6592. Platinum, interaction of oxygen, 6806. iridium, and rhodium, vapor pressures, J 65A4-113,

289 (1961). 6%, rhodium vs. platinum-30% rhodium thermocouple, a preliminary report, studies at the NBS, 5708. Platinum resistance thermometers, 4550; 4545. cryogenic temperature measurement, TN147 (PB

161648).

interpolation, 3587.

10° to 273.15°K, 4708. Platinum resistance thermometry, the SondheimerWilson-Kohler formula, J 69C4-209, 283

(1965) . Plenary, ninth, assembly of the CCIR, 3852A. Plumbing fixture traps, self-siphonage, 538A.

fixtures, vitreous china, CS20-63.

stack data, 4191.

stacks, capacities, 407A. system installations, capacities of drains and

stacks, 1281A.

system, vent manifold, TN253, p. 1. systems, investigation of the hydraulics of hori- zontal drains, Mono.86. Plural scattering of 20-kev electrons in aluminum, 4844. Plywood, southern pine, CS259-63. P-N junction type, diffused, to X-rays, steady-type response of silicon radiation detectors. II: Photodiode mode of operation, J 70A2-394, 181

(1966) . Pneumatic bridge hygrometer for use as a working

humidity standard, 6555. bridge utilizing critical flow, continuous-absorption hygrometry, 6657.

instrument, versatile, based on critical flow, 165A.

simple, pressure reducer, dynamic behavior, 4043. p-nitrophenol from 0 to 60°, 5013. Point defects in crystals, 4964.

defects, internal friction in rutile containing, 6148.

point, emergence of a microwave entering a linearly graded plasma, J 69D2-452, 177 (1965).

level sensors in liquid hydrogen, performance, 6469. magnetic fixed, thermometry below 1 deg K, 5877. observations at a variety of high geomagnetic lati- tudes, 5970.

projection, polymers, X-ray microscopy, 5862. projection X-ray microscope, moire fringes pro- duced, J 67A2-201, 149 (1963). source data, dose fields from plane sources, 5304.

validity of the Lorentz-Lorenz equation, 8922. Point-to-point communication, lunar, 5453. communication on the moon, J 67D1-238, 5 (1963).

Pointers, TN285.

Pointing interferometer, J 67C4-141, 307 (1963). Pointwise approximation, error bounds in, of solutions

of elastic plate problems, J 67B3-99, 145

(1963). bounds in the Cauchy problem of elastic plates, J 65B2-55, 157 (1961). bounds in the first bi-harmonic boundary value problem, 5572. Poker game, continuous, 3378. Polar axis, 4654. blackout during the International Geophysical Year, 4845. cap absorption, 4448; 4449; 4456; 6293. cap absorption events, absorption during, day-to- night ratio of cosmic noise, 5743. cap absorption, study of solar activity, 3403A.

cap blackout, delay time of and its relation to de- lay time of geomagnetic disturbance, 5275. modes of lattice vibration and polaron coupling

constants in rutile (TiO,), 6294. molecules, pressure induced shifts of infrared lines, 5591.

regions, radio noise level at low and very low

frequencies, J 69D9-558, 1239 (1965). semi-conductors at high frequencies, electrical conductivity, 3682. winter mesosphere obtained from low-frequency propagation and partial reflection studies, physical properties, J 68D12-436, 1319 (1964). Polaran coupling constants in SrTiOa, 8945.

Polarizabilities, electronic, ions in crystals, 5814.

Polarizability, electric, of a short right circular conduct- ing cylinder, J 64B3-30, 135 (1960).

fluid parahydrogen, dielectic, 5989. magnetic, short right circular conducting cylinder, J 64B4-35, 199 (1960). Polarization and depression-angle dependence of radar

terrain return, J 64D5-83, 483 (1960). bremsstrahlung linear, 3451.

circular, of gamma rays from neutral particle decays, 4825. fading of satellite signals to study the electron content and irregularities in the ionosphere, J 64D4-66, 335 (1960) ; 3878. geomagnetic micropulsations, 5911.

horizontal, VLF propagation under the ionosphere

in the lowest mode, J 68D1-323, 105 (1964). induced electrical, discussions on pA theoretical study, 2525A.

linear, lunar emission, J 69D12-605, 1613 (1965).

linear or circular, radar corner reflectors, J 66D1-

171, 23 (1962). measurements, coatings formed on steel by cathodic

protection, J 65C3-68, 171 (1961) ; 5237. precise measurement, M256, p. 113. rotation recordings of satellite radio signals, 3678A.

technique, corrosion rates of ferrous alloys (Fe-Cr 646
and Fe-Cr-Si) measured, J 66C3-100, 245

(1962).

techniques, a study of the corrosion rates of alum- inum and steel underground, J 65C4-80, 271

(1961).

techniques, measured by, corrosion rates of ferrous

alloys, (Fe, Cr and Fe-Cr-Si), 5268. thermal radiation of the Moon at 14.5 Gc/s, J 69D12-604, 1612 (1965). vacuum ultraviolet, method for measuring, 6550. Polarized electrons and positrons by tagging technique,

6295. neutrons, 350 keV, with oriented Ho1K nuclei, inter- action, 6453; 6807.

orbitals to the scattering of electrons from hydrogen, 3977. Polarographic analysis, TN273.

analysis of titanium (IV) —EDTA complexes, J 69C1-187, 67 (1965) ; 9091. analysis of white lead and zinc oxide in white paint pigments, 9092. Polarography, 4846.

analytical tool, 6296. cathode-ray, determination of tellurium, 6687. Polaron coupling and lattice vibration constants in

rutile (Ti02 ), polar modes, 6294. Polarons, electric field, 6297. magnetic field, energy levels, 6040. Pole figures, relation of partial (110), thickness and

microstructure of electrodeposited copper, 5634.

south, study of auroral absorption events, 6565. Polishing, solution, oriented single crystals, 9013. Polonium-210 alpha particles in nitrogen, argon, and

an argon-methane mixture, absolute measure- ment of W, 6577. Polyamide, disulfide-crosslinked self-crimping, fiber structure-property relationships, J 65A6-131,

489 (1961). Polyamides, dielectric properties, 4038.

dielectric properties of polyhexamethylene adipa- mide and polyhexamethylene sebacamide, J

65A3-101, 185 (1961). Polyatomic molecules, dissociation, 3681. Franck-Condon factors, 6087. gaussian wave functions for, integral formulas,

J 68B1-114, 35 (1964). Polybutene-1, crystallization kinetics and polymorphic

transformation, J 69A4-353, 335 (1965). Polycaprolactam fibers, methylene groups in determi- nation of disulfide and methylene sulfide crosslinks, J 66A3-159, 251 (1962). systems, crosslinked, ultraviolet stability, J 66A6-

184, 489 (1962).

Polychlorotrifluoroethylene, chain folds, 4878. melting process and equilibrium melting temperature, J 66A1-137, 13 (1962).

semicrystalline, dielectric properties, J 66A4-162,

269 (1962).

Polycrystalline aluminum, x-ray measurement of resid- ual strains in individual grains, J 68C4-171, 249 (1964).

brittle specimens on porosity and grain size, 3175. ceramics, effect of microstructure on mechanical

behavior, Mono.59, p. 103.

ferrite and garnet disks at L-band frequencies, fer- rimagnetic resonance, J 68C2-154, 85 (1964).

thoria, elastic constant—porosity relations, J 67C1-

118, 39 (1963). tungsten and rhenium, kinetics of positive ion desorption, 5767.

Polycrystals, nonequilibrium thermodynamics of creep, 6225.

Polycyclic, aromatic hydrocarbons, oxidation. A review

of the literature, Mono.87. aromatic hydrocarbons, photochemical changes in thin-layer chromatograms, 6285.

Polydisperse Mie scattering, J 69D6-523, 893 (1965). Polydivinylbenzene and of copolymers of styrene with

divinylbenzene and with trivinylbenzene, ther- mal stability, J 65A3-108, 243 (1961).

Polyelectrolyte solution, calculations of the potential and effective constant, TN192; 5221.

effective diffusion constant, 5313.

self-diffusion of ions, 4811. Polyelectrolytes and trapped Brownian trajectories as- sociated ions, 6244. Polyester adsorption on glass, reversibility, J 67A6-246,

601 (1963).

colorimetric method for measuring, degradation due to weather, 5129; 5239. Polyesters glass and water surfaces, interfacial properties, 3233.

linear saturated succinate, monolayer properties at

air-liquid interfaces, J 65A1-82, 51 (1961). polymers to glass and other substrates, adsorption,

3963. Polyethylene, bulk, crystallization temperature, x-ray

study of isothermal thickening of lamellae,

9146.

bulk, melting temperature and change of lamellar thickness with time, J 67A5-233, 441

(1963) . crystalline non-oriented, low-angle X-ray, 4153.

crystallized with various degrees of lamellar orientation, J 70A3-398, 225 (1966).

crystals, density of, grown from solution, J 70A3-

397, 221 (1966).

diffusion in a polymer with lamellar morphology,

5990. dimensional changes in systems of fibrous macromolecules, 3183.

fibrous, low angle X-ray diffraction, 3606.

film, CS227-59.

heat capacity of linear and branched, 5759.

linear, fusion of polymer networks, 3553. (PE) plastic pipe (SDR-PR), CS255-63. thermodynamic properties of, predicted from paraffin data, J 67A3-210, 233 (1963). Polyfluorobenzenes with nucleophilic reagents, reactions, J 67A5-237, 481 (1963). Polyhedron with 0,1-vertices, maximum matching, J 69B1&2-143, 125 (1965). Polyhexamethylene adipamide and polyhexamethylene

sebacamide, dielectric properties, J 65A3-100,

185 (1961).

Polyisobutylene, fractionated high and low molecular

weight, thermal degradation, J 68A2-263, 153

(1964) . Polyisoprene, spacings, viscosity measurements, deter- mination of the intermolecular entanglement

coupling, J 69A1-325, 33 (1965). Polyisoprenyllithium, anionic polymerization of isoprene

at low concentrations, J 69A2-337, 159 (1965).

Poly-L-proline, evidence for cooperative intramolecular

transition, 6054. Polymer, acrylic ester, 4613. adsorption, J 67A6-246, 601 (1963). adsorption by ellipsometry, M256, p. 281. adsorption, chain, at a surface, a random walk

model. II. Correlation between neighboring

steps, J 69B4-159, 301 (1965).

adsorption, one-dimensional model, 6554. chain folds, theoretical aspects of crystallization

of: bulk polymers, 6493. chains in a lattice, application of the theory of absorbing Markov chains to the statistical thermodynamics, 5925. compression: visual observations on stressed biaxially oriented nylon, 6298. concentrated, solutions, energy requirements of mechanical shear degradation, 3530. 647
crystallization with chain folds, theoretical aspects

:

bulk polymers, 6493.

crystals, dislocations, J 68A5-297, 513 (1964).

crystals with folded chains from dilute solutions, formation, 3213A.

decomposition: thermodynamics, mechanisms, and

energetics, 3717. degradation (by heat, oxidation, and radiation), in unsolved problems in polymer science, 4847. evaluation procedures, developments, 5988.

failure, microscopy of color phenomena, 4765.

film guard rings, metallized, 6862. fracture, color phenomena, J 67A6-249, 625 (1963).

fracture, microscopy of color phenomena, 5484. lamellar morphology, polyethylene, 5990. molecule, free volume, solvent interaction, statistical computation of configuration, 5695. molecule, statistical thermodynamics of the lattice model, 6402. molecule with excluded-volume effects, limiting shape of the distribution function of lengths, 8916. molecules at low surface coverage, adsorption, 6586. molecules, neighbor interactions and internal rotations, 3660. networks formed from linear polyethylene, fusion, 3553. property-structure studies at the NBS; thermal stability, 6299. radiation-resistant-poly (tetrafluoroethylene) , 3282.

rates of adsorption of polystyrene, J 68A4-287, 391

(1964).

reinforced, effect of particle size and shape distri- bution, 6442. research at the U.S. NBS, Part I, and Part II, 5573; 5574.

science, 4847.

science, unsolved problems, 4574. segments in the vicinity of an absorbing interface, density distribution, 6678.

silica-reinforced, properties of, for dental restorations, 5600.

surface, proper accounting of conformation, 6557;

8963. system, anisotropic, extension of the Flory-Rehner

theory of swelling, J 65A6-130, 485 (1961). systems, some stochastic processes, 5679. Polymeric materials and monomers, analysis of—plastics, resins, rubbers, fibers, 3138.

solids, fracture processes, 6764. systems, dielectric properties, 3502. Polymerization, 5615.

anionic, homogeneous, 1. molecular weights of poly- styrene initiated by sodium naphthalene, 5390.

anionic, of styrene, solvent participation, 6370. high pressures, radiation-induced, 5614. homogeneous anionic, statistics of irreversible ter- mination, 5698.

ionic, of acenaphthvlene, sterenregularity, J 68A2-

265, 165 (1964). propylene, high pressure, radiation-induced, 5616. radiation-induced, other reactions of n-perfiuoro- pentadiene-1,4 at high temperature and pressure, 8970.

styrene, radiation induced, halobenzenes as sensitizers, 3562. Polymers, analytical chemistry, 3138; 4490.

bis (8-hydroxy-5-quinolyl) methane coordination, thermal stability, 6502.

brittle, fracture topography, 6765. bulk: theoretical aspects of polymer crystallization with chain folds, 6493.

cellulosic, fluorescence, 3952.

crystalline, relation to degree of crystallinity and

morphology, dielectric and mechanical relaxation, 6202.

crystallization kinetics, 4616.

crystallization, sequence selection problem, 5796. degradation, 4566. elastomers, electrical properties, 5318.

electrical and mechanical properties of: elementary

molecular approach, 2371A.

fracture phenomena, 3214. gamma irradiation of fluorocarbon, J 65A4-117, 375

(1961).

high, crystallization kinetics, 983A.

high, oxidation, 4823. high, some aspects of the mechanical properties, 5666; 6372. induced by excited species, crosslinking, 4558.

linear, with excluded volume effects distribution function of the end-to-end distances, J 69A4-

355, 355 (1965). microscopical studies of failure, 3254. network, rubberlike, 4727. non-polar, 4582.

optical observations of pressures, 5547. organic, thermal degration, 4388; 4879; 6501. oxidation, 4823. point profection, X-ray microscopy, 5862. polyesters to glass and other substrates, adsorption, 3963. pyrolysis of fluorocarbon, J 65A3-106, 227 (1961).

related, and perfluorophenyl ether, J 68A3-274, 277

(1964).

rheological properties, 5009. rubberlike, its molecular interpretation, linear vis- coelastic behavior, 3844.

rubberlike, model for viscoelastic behavior, J 66B4-

85, 171 (1962).

solid, dielectric properties, 4583.

solutions, dilute, light scattering, 6177.

solvents, effect of heterogeneity in molecular weight

on the sedimentation equilibrium second virial

coefficient, 6251. Tait equation relating volume and pressure in the study of transitions, 6522. telomers of four-chloroperfluoroheptadiene, 1, 6, 5575. thermal decomposition, effect of branching, 4045. thermal degration, temperatures up to 1200°C, 4389. thermogravimetric study of some new transition metal-Schiff base coordination, 9115.

trifluorovinyl penyl ether, pentafluorophenyl, triflu- orovinyl ether, 5544.

viscoelastic properties, effect of molecular weight

on, as predicted by a molecular theory, J 67B2-

96, 87 (1963). volume relaxations in amorphous, 9134. Polymethyl methacrylate, fracture, J 67A6-249, 625

(1963). Polymorphic types of FeNbOj, ixiolite and other, 6167. Polymorphism of AB03 type rare earth borates, 4234. AB03 -type rare earth borate solid solutions, 6300. bismuth sesquioxide, J 68A2-268, 189 (1964); J

68A2-269, 197 (1964). dicalcium silicate, 4268.

fibrous polypeptides; <*<=^/3 transformation in naturally occurring keratin, 4848. hydrogen iodide, 8946. isopropyl alcohol, 5577. monobromacetic acid and the diagram of state of

dichloroacetic acid at elevated pressures, 4233. oxides of the trivalent rare-earth ions. Part I. Phase equilibria in systems involving the rare- earth oxides, J 64A4-53, 309 (1960).

silver iodide, 5576; 5578. Polymorphs of some alkali halides, lattice parameters and lattice energies of high pressure, J 68A1-

258, 105 (1964).
Polynomial, general, the use of finite polynomial rings

in the factorization, J 69B3-153, 189 (1965). method of deducing electron density profiles from

ionograms, Titheridge coefficients, J 67D1-245,

79 (1963). Polynomials and fractional order differences of their

coefficients, zeros, 5864. Bernstein, and interpolation theory to linear array

synthesis, application, 5924. Euler and Bernoulli, AMS55.

orthogonal, AMS55.

zeros, seyeral variables and fractional order differ- ences of their coefficients, J 68B3-124, 115

(1964).

Polyolefins, pyrolysis, 3731. Poly-(2,3,4,5,6-pentafluorostyrene), degradation, 4025. Polypentene-1, measurement of a maximum in the iso- thermal crystallization rate-temperature curve,

5465. Polypropylene, isotactic, dependence of mechanical re- laxation on morphology, J 68A5-298, 519

(1964) . isotactic, spherulitic crystallization, from solution: On the evolution of monoclinic spherulites from

dendritic chain-folded crystal precursors, J

70A1-385, 29 (1966). variation of glass temperature with pressure, J

68A3-273, 273 (1964). Polystyrene adsorbed at the ©-temperature, conformation, 6654. atoms of hydrogen and deuterium, electron spin resonance spectra of free radical intermediates formed by reaction, 4062. chrome surface, rates of adsorption and desorption, J 68A4-287, 391 (1964).

crazing, J 67A6-249, 625 (1963). cyclohexane system, variation of the thermody- namic ideal temperature, 3365.

dilute solution, 4544.

dilute solution, concentration dependence of sedi- mentation coefficient, 6433A. hydrogen atom bombardment of, free radicals, 4070. latex—aliphatic soap, 4631.

layers, thickness of adsorbed, by ellipsometry, J

67A5-232, 431 (1963). molecular weights, initiated by sodium naphthalene, homogeneous anionic polymerization, 5390. networks formed from oriented chains, 6376. similar polymers, excitation of pi electrons, 20-KeV

electrons, 5345.

solution, temperature dependence of the refractive index increment, 3327.

solutions, opalescence, 4556. three different equilibrium ultracentrifuges, 4534. Polystyrenes, deuterated, with hydrogen and deuterium

atoms, reaction, 6335.

electric spin resonance spectra of aged-irradiated,

5332. fractionated high and low molecular weight, ther- mal degradation, J 66A4-162, 307 (1962). gamma-irradiated, free radicals, 3551. Polysulfide sealants, Part I, and Part II, 5579; 5580. Poly(tetrafiuoroethylene) —A radiation-resistant poly- mer, 3282. Polytetrafluoreoethylene in chlorine, gamma irradiation, 5371. mechanism of the depolymerization of, with pyrolytic and radiolytic initiation, J 70A2-387, 115

(1966).

relative enthalpy, from 0 to 440 °C, J 69A2-336, 149

(1965) . thermal degradation as first-order reaction, J

64A6-73, 513 (1960). thermodynamic properties, J 69A2-336, 149 (1965).

Polytrifluoroethylene, pyrolysis: influence of gamma

radiation and alkali treatment, 6324. Poly (vinyl acetate) and its relation to free volume, dy- namic compressibility, J 67A1-194, 43 (1963). Polyvinyl alcohol coatings, weather resistant, 3370.

chloride (PVC) plastic drain, waste, and vent pipe and fittings, CS272-65.

chloride (PVC) plastic pipe (SDR-PR and class T), CS256-63. polymers at temperatures up to 1,200 °C, J 66A5-

175, 401 (1962). pyrrolidone components, 4916. Ponderosa pine windows, sash, and screens (using sin- gle glass and insulating glass), CS163-64.

Pool boiling design correlations for O2N2 and He,

nucleate and film, 8902. Porcelain enamel, BSS4.

enamels exposed for three years, effect of exposure

site on weather resistance, Mono.44. enamels exposed for seven years at various sites, weather resistance, 6531; 6538. enamels, standard test for determining alkali re- sistance, 6393. enamels, weather resistance, BSS4.

high sodium content, cation-exchange between

molten salts, 5942. microstructure, M257, Paper 6, p. 93. reference electrode conductive to sodium ions for use in molten salt systems, 3123. Pore size, controlled, chromatography on glass, 6634. Porosimeter, mercury, determination of macro-pores in leather, 5454. Porosity and grain size, dependence of mechanical

strength of brittle poly-crystalline specimens,

3175.

electrodeposits, nature, cause and effect, 3339;

3340; 3341.

relations for polycrystalline thoria, J 67C1-118, 39

(1963). Porous graphite contact on p-type silicon, 4917.

Port, furnace with a viewing, periodic heat flow in a

hollow cylinder, 5558. Portable 2 flow counter for the detection of alpha and

beta particles in smear samples, 5581. impedance tube, 5157. rubidium-vapor frequency standard, TN235.

Portland cement, calorimetry, 5225; 5226. cement, causes of variation in chemical analyses and physical tests, Mono.28. cement clinker, studies on the constitution, 556A. cement paste, hardened, reaction with carbon di- oxide, J 66A6-182, 473 (1962). cement, solution calorimetry, zinc oxide as a stand- ard substance, J 66A5-173, 381 (1962).

Position lines, fixes with unknown target positions, esti- mation of variances, J 65D-129, 263 (1961).

titles of chemists, 3717A.

Positions, Ligand, inorganic complexes, designation,

6684. two carbon, and derived heats of formation of sev- eral alkyl radicals, relative rates: hydrogen atom addition to olefins, 6785.

Positive, copositive and completely, quadratic forms,

5262. displacement meter, rotary, theory, 5813.

ion desorption, kinetics, polycrystalline tungsten and rhenium, 5767.

ion-neutral reactions in the ionosphere, 8947. negative surface ionization of an alkali halide, de- termination of work function from the ratio, 9069. Positrons and electrons, tables of energy losses and

ranges, 6420. 649
polarized electrons by tagging technique, 6295. Possible application of the system loss concept at ELF,

J 64D4-75, 413 (1960).

effect of lower atmospheric divergence on local electron density in the ionosphere, 3389.

influence of the ionosphere on the impedance of a ground-based antenna, J 66D5-216, 563 (1962). mechanism for light absorption by interstellar grains, 6556.

solar flare effects in the F region of the ionosphere,

4235. sugar grove radio telescope facility in the technical programs of NBS, 5781.

Possibility, detecting ionospheric drifts from occurrence

of spread F echoes at low magnetic latitudes, 3688. guided electromagnetic waves in the earth's crust, 5782. measurement of the nuclear 2

4-pole deformation,

6258. rejecting certain modes in VLF propagation, 4207. Post office automation, applications of statistics, 3978. mechanization, 3718; 4236. Postal tests, sorting devices, 3306. Potassium borohydride, heat capacity from 15 to 375°K; thermodynamic properties from 0 to 700° K,

J 68A6-314, 651 (1964). borohydride, heats of hydrolysis and formation,

J 65A2-90, 97 (1961).

chloride in highly purified N-methylpropionamide from 20° to 40°, conductance, 5967. crystal from the vapor phase, growth rates, 4674. dichromate, precise coulometric titrations, J 67A5-

234, 453 (1963). dihydrogen phosphate and sodium succinate at 25 °C, buffer solutions, J 67A6-242, 573

(1963).

iodide, systems silver iodide-sodium iodide and sil- ver iodide, J 64A5-64, 403 (1960). mercury crystals, vapor-phase growth kinetics, 6526. perchlorate, heat of decomposition of, J 65A1-84,

63 (1961).

perchlorate, mechanism of the isothermal decomposition, 3634. sodium chlorate, heat of decomposition, J 69A1-320,

1 (1965). Potential application to library mechanization of the current status of graphic storage techniques,

6438. bound states in a Debye-Huckel, 5936. diatomic, function, 4439.

distribution in a rectangular semiconductor bar for use with four-point probe measurements, 6301. distribution method in equilibrium statistical mecanics, 6302.

effective diffusion constant in a polyelectrolyte

solution, calculations, 5221. energy curves for CO and CO+

, 8949. energy function, 4787; 4788.

function, Born-Mayer, applied to the crystalline

alkali halides, 5145. functions, TN333.

heat: method for measuring the heat release of materials in building fires, 4237. humidity studies, radio refractometry, 8973.

interaction, between He and H2 , 6808. refractive index and the molecular refractivity, 4012. standard, of the Ag-AgCl electrode in 5% aqueous

mannitol, 6392.

standard, silver-silver chloride electrode and activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt. %) with and without added

sodium chloride at 25 deg, 5689. standard, silver-silver chloride electrode in 10 and 15% mannitol at 25 deg, 5799. two helium atoms, comments on the Rosen inter- action, 5245. use of passive probing of atmospheric structure by thermal emissions at radio frequencies,

8950. valence states and electrode, 9017.

Potentials, electrode, 3198.

electrode, in fused systems, 5321; 6021; 6022;

6724.

ion size on membrane, 6021. membrane, electrode potentials in fused systems,

5321. two nearly equal, method for comparing directly

in parts per million, 5476. Potentiometers, calibration, of resistance bridge methods, 5938.

calibration, practical methods, TN172.

Potentiometric titrations of weak acids in methanol- water solvents, 6155. Pound-type klystron stabilizer, ten kilocycle, 5730. Powder, diamond, in sub-sieve sizes, grading, CS261-63.

evacuated, insulation for low temperatures, 3204. insulated dewars, large, cool-down and warmup,

5261A.

insulators, 5059. patterns, diffraction, standard X-ray, C539, Vol. 10; Mono.25, Sect. 1 to 4. X-ray data for compounds, 5055. Powders at low temperatures, nuclear magnetic reso- nance in metal, 5517. outgassed, 4677. Powell comparator method for determining thermal

conductivites, 4849. Power calibration techniques, microwave, bolometric,

at the NBS, 5214. demands and energy use in all-electric houses equipped with air-to-air heat pumps, 4635. density requirements for airglow excitation by

gyrowaves, J 65D4-135, 321 (1961).

gain, TN331.

generators, VHF and UHF, for RF instrumentation, TN77 (PB161578).

loss and operating temperature of tires, 3283. measurements, microwave, and standards, inter- national intercomparison, 6150. measurement, microwave, techniques employed at NBS, 4454. meter, coaxial, calibration using a waveguide

standard, J 70C2-223, 125 (1966). meter, variable impedance, and adjustable reflec- tion coefficient standard, J 68C1-148, 7 (1964). optimum output, of RF excited helium-neon gas

lasers at 632.8 nm, gas mixtures and pressures, 6769. output, dependence, gas laser on the length and

rate of excitation of the discharge, 5277. RF and microwave, measurements, 6351. rank-order two-sample tests, 3689.

series buildup factor formulation. Application to rectangular and off-axis disk source problems,

J 67C4-140, 291 (1963). spectrum and its importance in precise frequency measurements, 3856. spectrum of the variation of a carrier envelope in tropospheric scatter propagation, 3344. supply for instruments, regulated, 3748. thermoelectric, and thermal conductivity of rutile (Ti02 ), 9106. 650
transmission characteristics of the ear and the

skull from hearing threshold data, 4891. Powers, matrix, 4957. P2-4—Quantameter intercomparison, J 68A6-319, 703

(1964) . Pr3 * in the vapor state, energy levels, 6737. Pr1" from the hyperfine structure of doubly ionized praseodymium, nuclear magnetic moment,

6894; 6895. Practical aspects of the use of AC-DC transfer instru- ments, TN257.

methods for calibration of potentiometers, TN172.

temperature scale of 1948, international, realiza- tion and use, 9094.

theoretical aspects of asphalts: weathering, 9137. Practice and principles, electrodeposition of alloys, Vol.

I, General survey principles, and alloys of copper and of silver and Vol. II, Practical

specific information, 5322. determination of pH, theory, 5985.

Practices, establishing sampling and sample preparation techniques in spectrochemical analysis, 6409. recommended, and materials for use with cryogenic

propellants, 8985. Praseodymium, analysis of the third spectrum, 5198. (Prl), atomic absorption spectrum, J 69A1-329, 59

(1965) . nuclear magnetic moment of Pr114 from the hyperfine structure of doubly ionized, 6894; 6895.

trichloride, analysis of the spectrum, 5809.

triply ionized, analysis of the spectrum, 6600. Prebunching in electron linacs, 5582. Precast cellcular concrete floors and roofs, fire tests, Mono.45.

Precession equation of a spinning particle in nonuni- form fields, 6303.

Precipitation, cupferron, separation and determination

of zirconium in zirconia yttria mixtures, 6362.

electron, and ionospheric radio absorption in the auroral zones, 6733A.

elements on addition of aqueous ammonia to their clear solution, 3719. hydrogen sulfide, determination of rhodium in rhodium-uranium alloys, 5287.

indicator, TN263.

relativistic electron, mesosphere at subauroral

latitudes, 8989. Precise assay of copper using small samples, 8951. coulometric titrations of halides, J 67A1-192, 31

(1963). coulometric titrations of potassium dichromate,

J 67A5-234, 453 (1963). determination of the area of guarded electrodes for accurate dielectric measurements on solid-disk specimens, 6304. determination of the dielectric constant and loss angle of solid-disk specimens, techniques for using air-gap method, 6423. evaluation of lens distortion, 5783. phase and amplitude measurements on VLF sig- nals propagated through the Arctic zone, J 68D3-342, 275 (1964). measurement of the microwave absorption fre- quencies of the oxygen molecule and the velocity of light, 4238. measurements of distance and of the velocity of

light using lasers, J 68D5-360, 540 (1964).

velocity-of-light, use of terahertz photobeats, 6489. voltage-ratio measurement, 8952. Precision and accuracy, electromagnetic measurements,

4850.

evaluation and interpretation of analytical data,

3129. experiment design aspects, 4239. instrument calibration systems, realistic evaluation, M248, p. 63. measuring temperatures above 1000°K, 3812.

realistic measurement, 4810. standards and measurements, 5901A.

Precision, admittance and impedance standards, four- terminal-pair networks, 6083. analytical methods involving linear calibration curves, evaluation; which measure of precision, 6537. calibration of RF vacuum tube voltmeters, TN121

(PB161622).

density measurement of silicon, J 68A5-299, 529

(1964).

detector for complex insertion ratio measuring

systems, 6305.

electrical measurements course, M248, p. 181. electromagnetic measurements, 5085. instrument inventory, computer control, 6649.

low-level bolometer bridge, 4530. measure; evaluation of the precision of analytical methods involving linear calibration curves,

6537. measurement and calibration: Electricity and

electronics, H77, Vol. I. Heat and mechanics, H77, Vol. II. Optics, metrology, and radiation, H77, Vol. III. measurement of transformer ratios, 3857. measuring personnel in the Air Force, selection, training, and evaluation, M248, p. 177. method for evaluating primary aberrations of

lenses with a Twyman interferometer, J 69C4-

205, 251 (1965). methods for measuring, tensile strength, 5583. millimeter wave interferometry at the U. S. National Bureau of Standards, 3719A.

noise-comparator, 5882A.

noise spectral density comparator, J 66C4-108, 323

(1962).

optical scanner, digitizing pictorial information,

5991. phase meter, 4851. RF attenuation calibration system, 3390. RF power transfer standard, 3391. refractometry of small lens-shaped objects, 8953. reverberation chamber measurements of sound ab- sorption coefficients, 4240. simultaneous measurement procedures, 5584. voltage dependence, J 69C4-207, 265 (1965). voltage measurements on Zener diodes, 6188. Zeeman modulation microwave spectrometer, 3720. Precursor electrons ahead of cylindrical Shockwaves,

4852. Predicted stark-effect shifts in the spectrum of neutral germanium, correlation between observed wavelength shifts produced in electrodeless discharge tubes, 5977. Predicting compressive strength from the properties of fresh concrete, 5994. ground-state spins of light nuclei, empirical rules, 6038. performance of long distance tropospheric communication circuits, 4853. performance of tropospheric communication links, singly and in tandem, 4854; 5585. performance of tropospheric scatter communication circuits, a nomograph, 5149. thermal stratification and self pressurization of a

fluid container, theoretical model, 6572. Prediction, communication reliability, noise in VLF to HF bands, 5507. 651
correlation of thermal conductivity of metals through the application of the principle of corresponding states, 6662. experiment, comparison of a new SU3 , 5960.

filtering, J 64D6-96, 681 (1960). ionospheric characteristics at CRPL for skywave

radio propagation at high frequencies, 6306. pressure drop in two-phase single-component fluid flow, 4855. radio propagation, service, improvements, 3575. symptoms of cavitation, J 65C3-65, 147 (1961). system behavior, 3271; 3676. VLF diurnal phase changes and solar flare effects, 4531.

Predictions, CRPL ionospheric, H90.

transmission loss, TN101, Vols. 1 and 2. unitary symmetry (SU3), 5351. unorthodox, 9023. Preliminary assessment of the IGY, 2697A. Mars radar results, J 69D12-611, 1625 (1965).

report, studies at NBS of the platinum-6% rhodium

vs. platinum-30% rhodium thermocouple, 5708.

results of a micropulsation experiment at con- jugate points, J 69D8-543, 1107 (1965).

studies directed toward determination of spectral absorption coefficients of homogeneous materials in the infrared at elevated temperatures, 8954.

studies on the characterization of solution-grown ADP crystals, 8955. study of the orifice flow characteristics of liquid nitrogen and liquid hydrogen discharging into a vacuum, 5883. thermodynamic properties of neon, 6307. Venus radar results, J 69D12-610, 1623 (1965). Preparation, AI2O3 electron microscope specimens, jet thinning devices, 6168. anhydrous single crystals of rare-earth halides, J 67A4-223, 343 (1963). bubbler tips, 287A.

carbonate-free complex calcuim aluminate, J 69A1-

327, 45 (1965). copper crystals with low electrical resistivity, 8956. electrocardiographic data for analysis by digital electronic computer, 3722. electroplating on uranium, 4856. evaluation of pure substance standards, 4241.

fluoro- and bromofluoroaryl compounds by copyrolysis of bromofluoroalkanes, J 65A3-107, 239

(1961) . heat of formation of a magnesium oxysulfate, J

68A6-313, 645 (1964). high purity trimethylborane, J 66A1-140, 59

(1962) . initial, and metastable transitions in mass spectra, 6137. latern slides, 5587. NBS white cast iron spectrochemical standards, M260-1.

properties of aromatic fluorocarbons, 4242. properties of difluoroborane, 6308. spectrochemical analysis, sampling and sample,

6409. sulfur of high purity, J 64A4-59, 355 (1960). thermal stability of tetrakis-(pentafluorophenyl)-

silane and tris-(pentafluorophenyl)-phosphire,

3721.

transfer, and dilution of a 50% sodium hydroxide

solution, 4243. Prerequisite to the utility of microgrammars, TN258.

Prescribed coefficients, location of the zeros of some

infrapolynomials, 6256.

coefficients, structure of infrapolynomials, 6260.

coefficients, zeros of infrapolynomials, 4384.

orientation, work function measurements on field emitters, 9141. values at given points, the zeros of infrapoly- nomials, 5811. Presence in the sun, atomic spectra of the rare earths, 5734. organic compounds, other than hydrocarbons, radiolysis of propane-<fs, 5625. Present and future of astrophysics and its effects on

industry in Colorado, 6470. past and future, electrodeposition of alloys, 6725.

state of atomic spectra, 5033. status of project HAYSTAQ, 6309. status of panoramic roentgenography, 4244. status of radiometric calibrations in the ultraviolet spectrum, 5034.

status, our knowledge of atomic transition probabilities, 5588. Presentation of remarks at panel discussion on modulation, 5637. Preservation of archival records on silver-gelatin type

microfilm in roll form, current research, J

69A5-359, 385 (1965). canonical distribution in a Markovian relaxation

process, 6056. edge detail in metallography, 4857. Pressure, added inert gases on gas phase radiolysis propane, 5758; 6448. broadening of DC1 by HC1 and HC1 by DC1. A

comparison of experimental results with Anderson's theory, 6311. broadening, prototype of relaxation, 5589. calibration of microphones, in small couplers, hy- drogen retention system, 5393.

calibrator, liquid-medium step-function, 5874;

5956. density-temperature and specific heat data for parahydrogen, 5742. density-temperature relations and specific heats of hydrogen to 350 atmospheres at temperatures above 14 °K, apparatus for, J 65C4-76, 231

(1961). density-temperature relations, of freezing liquid parahydrogen to 350 atmospheres, 5590. density-temperature relations of fluid para hydro- gen from 15 to 100 "K at pressures to 350 atmospheres, J 67A2-204, 173 (1963). dependence of rotationally perturbed lines in the

ultraviolet band spectrum of CN, 3723. dependence of the internal field at the 69 CO nucleus

in a 99.5% Ni-0.5% C alloy, 8957.

division as a means of calibrating vacuum gages,

4952. drop in two-phase single component fluid flow, 4855. equilibrium, of oxygen over Mnz-CvMnaOi at vari- ous temperatures, 6046. force calibration at NBS, M248, p. 13. high, radiation-induced polymerization of propylene, 5616.

high, single crystal studies of ice, 6779. hydrostatic, effect, crystallization, kinetics of natural rubber, 5747. indicator-paste patterns in duplicate dentures made

by different processing technics for the same

patient, 8958. induced shifts, infrared lines due to polar molecules, 5591. induced trapping phenomenon in silver iodide, 6312.

liquids, negative, technique based on the, for in- vestigating electrochemical phenomena at an

electrode, galvanostalametry, 5370.
measurement, high, 5386. measurements in cryogenic systems, 5592. measurements, isopiestic vapor, ternary system,

sorbitol-sodium chloride-water at 25 deg., 5432. measuring instruments at NBS, static and dynamic

calibrations, 3792.

radiolysis and photolysis of methane, 6009.

solar wind, shape of magnetosphere boundary

shape, 6364.

stress analysis, distribution under rigid Bridgmantype anvils, 5189. study of transitions in polymers, utility of Tait equation relating volume, 6522. temperature, dependence of the electrical conductivity and thermoelectric power of pure and

aluminum-doped rutile on equilibrium oxygen,

5278. temperature, heat and entrophy change of transition, fusion and vaporization, 5728. temperature on rheological properties of polymers,

5009. temperature, radiation-induced polymerization and

other reactions of n-perfluoropentadiene-1,4,

8970. transducers, commercial carbon composition resistors, 6644. transducers, methods for the dynamic calibration, Mono.67. uniform external, 5045. vapor, chemical elements, 6045. vapour, 5115. warning instrument, partial, oxygen, J 67C1-119, 47 (1963). waves, infrasonic, auroral-zone observations of, related to ionospheric disturbances and geo- magnetic activity, 5209. Pressures, below 500 kg/cm2

, compressibility of natural

rubber, J 68A3-271, 259 (1964).

equilibrium, of oxygen over MnOy-Mn2 03 at various temperatures, 6739. gas mixtures for optimum output power of RF

excited helium-neon gas lasers at 632.8 nm,

6769. generated in multianvil devices, correlation of factors influencing, 5266. high, optical studies, 6273.

high, radiation-induced polymerization, 5614. high, thermodynamics of hydrogen solubility in cryogenic solvents, 6505. hydrostatic, effect, crystallization kinetics of natural rubber, 5309. induced in polymers, optical observations, 5547.

low, and temperatures, gaseous heat conduction,

3216. measurement of very-high, 6200. room temperature, low, oxidation of iron, 6352. simultaneous dielectric constant and volume meas- urements on liquids, 9008. vapor, of platinum, iridium, and rhodium, J 65A4-

113, 289 (1961). Pressurization and stratification of liquid hydrogen, an

experimental study concerning, J 65C2-58, 81

(1961).

self, and thermal stratification of a fluid container,

theoretical model for predicting, 6572. Prestressed quartz, fused silica, and aluminum, audio- frequency compliances, 5931. split-beam composite concrete sections, flexural be- havior, 6758. Pretreatment and the use of surface-active comonomer,

bonding to dentin improved, 6582. Prevention, signs and treatment of frostbite, 6092. Price list and catalog of standard materials issued by

the National Bureau of Standards, M260.

Primal (all-integer) integer programming algorithm, J 69B3-154, 213 (1965). Primarily 3d wavefunctions of the tetrachlorocuprate

ion, electron paramagnetic resonance, 6731. Primary lead alloys, solute nuclear magnetic reso- nances, 9012.

processes, photochemical decomposition of nitro- alkanes, 4858.

processes, photolysis of ethyl nitrate, 5593. processes, vacuum ultraviolet photolysis of water and ammonia, 5112. radio frequency permeameter, air core, for re- versible permeability measurements, 5186.

Principle, Archimedes', determination of the apparent volume of leather, 6429. corresponding states, correlation and prediction of thermal conductivity of metals through the

application, 6662. decomposable differential operators, the funda- mental solution and Huygens', 9079.

Principles, basic, liquefaction of hydrogen, 6458. cryometric impurity determination as applied to samples of small sizes, J 68C1-150, 35 (1964). methods of sampling, 3285.

practice, electrodeposition of alloys, Vol. I, General

survey principles, and alloys of copper and of

silver and Vol. II, Practical specific information, 5322. variational, generalized, electromagnetic vibrations; application to the theory of waveguide

junctions, 5376.

Priori bounds in the first boundary value problem in

elasticity, J 65B4-66, 269 (1961). Prism interferometer, wave front shearing, J 68C3-160,

155 (1964).

Probabilistic approach to the problem of large antenna

arrays, J 68D9-401, 1011 (1964).

interpretation, M269, p. 9. Probabilities, atomic transition, M278; NSRDS-NBS4,

Vol. I. atomic transition, bibliography, Mono.50. atomic transition, present status of our knowledge,

5588. calculations of autoionization, 6431. experimental transition, for six oxygen multiplets, 6063. experimental transition, spectral lines of seventy

elements. Derived from the NBS tables of

spectral-line intensities, Mono.53.

forbidden lines, transition, J 68A1-253, 61 (1964). microwave transition, zero-field theory, and optical Zeeman effect, 4903.

Probability, analyticity properties, one-dimensional Brownian motion, J 65B4-64, 251 (1961). binary error, due to an adaptable fading model,

5934.

distribution of the number of secondary electrons, 5986; 6689.

distribution, two-dimensional, in a turbulent field, 9122.

distributions, TN191.

error for an NCFSK system, the effect of at- mospheric noise, 9073A.

functions, AMS55.

inequalities of the Tchebycheff type, J 65B3-59, 211

(1961).

statistics, miscellaneous studies: distribution theory, small-sample problems, and occasional

tables, TN238.

Probe analysis, electron, metallurgical microanalysis,

5473. measurement, four-point, non-uniformities in semi- conductor sheet resistivity, 6082. measurements, four-point, potential distribution in rectangular semiconductor bar, 6301. 653
open, thermocouple control of radio-frequency

heating, 6266. symposium on X-ray electron, and summary, 5715. Probes to resonant scattering, relationship of a.c. reso- nant, 9093. Probing of atmospheric structure by thermal emissions

at radio frequencies, potential use of passive, 8950. Problem, calorimetry, heater lead, 6111. combinatorial, single decoding method for cyclic codes, 5867. energy-dependent Milne, for light gases, 6381. information, in government, 5010. Sansone, G., 6243. sequence selection, crystallization of polymers, 5796.

value, pointwise bounds in the first bi-harmonic boundary, 5572. Problems, application of norms of external radiation,

5595.

color identification, 4924. computational, involving integral matrices, J 65B1-

43, 15 (1961). connected with Rayleigh distributions, J 66D2-184,

167 (1962). drainage and venting, 113A.

error bounds for asymptotic expansions in turningpoint, 6048. experimenter, 3286. fatigue of bolts and bolted joints in aircraft applications, TN136 (PB161637). improving accuracy of measurement, 4925. ionospheric nonlinearities, J 69D1-438, 1 (1965).

life testing: factorial experiments, 2700A.

line transfer, 5446. matching, 6246. prospects, electrical properties of materials, 5594. radiation transfer, rocket ultra-violet lines, 5617.

scale in automatic classification, M269, p. 157. temperature calibration of an X-ray diffractometer furnace, 4859. temperature measurements from line spectra, 4923. turning-point, error bounds for first approximations, 5340. Procedure, determination of the noble metal content of dental gold alloys, 3724. estimating eigenvalues, 4435. Procedures, calibration, direct-current resistance apparatus, Mono.39. developments in polymer evaluation, 5988. measurement, precision of simultaneous, 5584. precise determination of thermal radiation properties, TN252; TN267.

systematic, 4969. tongue-tearing strength of woven fabrics, 6147. Proceedings of conferences: electromagnetic measurements, 4998. chemistry of cement, Mono.43, Vol. I and II. collision phenomena in astrophysics, geophysics, and masers, TN124 (PB161625).

ellipsometry in the measurement of surfaces and

thin films, M256.

mechanical behavior of crystalline solids, Mono.59.

microstructure of ceramic materials, M257.

non-linear processes in the ionosphere, TN211, Vol.

1-6. propagation of ELF radio waves, TN61 (PB161562). standards laboratory, M248.

statistical association methods for mechanized

documentation, M269.

systems engineering in ceramics, M267.

xth, spectroscopicum internationale, 5596. Process, bone char, role of carbon dioxide, 5791. control in the ceramic industry, M267, Paper 3, p. 39. games, renewal, 4666. 654

Markovian, exact conditions for the preservation

of a canonical distribution, 6056. performance parameters, TN288.

reflection in radio wave propagation, I 66D3-195,

273 (1962).

Verneuil, pure aluminum oxide grown, 6730. Processes, canonically invariant relaxation, nonequilib- rium thermodynamics, 6224. cryogenic, modern methods of analysis, 6216. exchange, reaction of boron trichloride with triethy- lamine-boron trifluoride, 5344.

fracture, polymeric solids, 6764.

ion decomposition in a linear, pulsed time-of-flight mass spectrometer, observations of the products of ionic collision, 8905. ionosphere, laboratory studies of helium ion loss, 6173.

irreversible, in plasmas—derivation of a convergent

kinetic equation from the generalized master

equation, 6495. Markov, master equations, 6847. microminiaturization, metrology, 5482. photolysis of ethyl nitrate, 5593.

physical, D-region of the ionosphere, 6289. random, J 64D6-96, 674 (1960).

stochastic, polymer systems, 5679. Processing, automatic data, trends in the technology,

3892.

food, electron accelerators, 6727A.

system, data, automatic transformation of observed plasma intensities into their radial distribution, 5982. technics for the same patient, pressure-indicator- paste patterns in duplicate dentures, 8958. Produced in electrodeless discharge tubes and predicted

stark-effect shifts in the spectrum of neutral germanium, correlation between observed wavelength shifts, 5977. Product 35 X 56, SU(6) Clebsch-Gordan coefficients, 9052. Production, alumina windows, 8959. embossing plates from texture patterns by electro- forming methods, 3287. high and ultra-high vacuum, role of cryogenics,

6476. high-energy bremsstrahlung, 8971. Lyman alpha radiation in ion atom collisions, 4861. methylamine from azomethane, mass spectrometric

study, 6194. photodetachment, oxygen metastable atom, 8932. VLF emissions, 5139.

Z-(fi-) baryon, 5537. Products, aerosol packaged products, 6313.

direct, factorial designs, 4650. observation, ionic collision processes and ion de- composition in a linear, pulsed time-of-flight mass spectrometer, 8905. rubber and related, methods for the analysis, 5479. rubber and rubber, 5651. segmental variation of Blaschke, 5795. sugars and sugar, 5640. weathered granite and uranium-bearing sandstone,

fractionation of uranium isotopes, 6084.

Profile analysis, electron density, topside sounder iono- grams, 6025. CRPL electron density program : some features and

early results, 3819.

data, electron density, analysis of ionospheric vertical soundings, TN146 (PB161647).

[X6374] Fe X, possible implications of observed,

8948. refractive index, in VHF reflection from a tropo- spheric layer, 6129.

Profiles, asymmetric, note concerning the reflection of waves in inhomogeneous layers, J 69D5-505,

701 (1965).
during auroras, £)-region electron density, 6001. electron density over the magnetic equator obtained using the incoherent scatter technique, TN169.

equatorial electron density, to 5000 KM, using the incoherent scatter technique, 5336. f-region electron density, Puerto Rico, nighttime

variations, 6222. ionospheric N(h), obtaining, structure of the lower F region, 5678.

line, far ultraviolet absorption spectra of the rare

gases, 6831. N(h), bearing on the structure of lower F region, some results of a new method for obtaining

ionospheric, 6380. Stark broadened Balmer lines in a hydrogen, 5597.

vertical, large-scale ionospheric irregularities, synoptic variations, 5720. Projection, point, polymers, X-ray microscopy, 5862. Program, ADI auxiliary publications, 5903A. APPA TAPPI reference material, 5202; 5923.

associative indexing, M269, p. 201. frequency topside sounder, 5023.

light element, combustion and reaction calorimetry

of several compounds of interest, 6640. National Bureau of Standards, 4371. national standard reference data, TN194; 6220. plotting circles of constant overpressure around tar- geted points, TN249.

statistical engineering, of NBS, 6465. weights and measures, technical training, 4971;

5724. world days, 6539. Programmed maneuver-spectrum fatigue test, of air- craft beam specimens, 5598. Programming, algorithm, primal (all-integer) integer, J 69B3-154, 213 (1965). algorithm with parabolic constraints, all-integer, 5188.

closed-loop, manned-machine combined system, 3725. computer, applications of graphs and Boolean matrices, 3434. languages, standardization, 6479. models, mathematical, selection of diets to mini- mize weighted radionuclide intake, 5461. Programs, current, in the U. S. Department of Commerce for advancing state science and tech- nology, 6674. extension, calculations of great circle paths and

sunrise-sunset times, TN303. KWIC, characteristics, other computer-produced

indexes, 5229. NBS, facility, possible uses of sugar grove radio

telescope, 5781. Progress, international standards, 2264A.

Progress, masers, J 64D6-96, 758 (1960). microwave power tubes, J 68D5-365, 655 (1964). radio standards and measurements, microwaves,

8975. report on aerosol packaged products, 6313. United States during the last three years on fre- quency and time interval standards and measurements, J 64D6-96, 592 (1960). Progresses, recent, cryogenic engineering, 5632. Project FIST. Fault isolation by semiautomatic tech- niques, Mono.83; 6314; 8960. HAYSTAQ, present status, 6309. ideas for young scientists, 3726. personal side of a research, 5780. standards—still continuing, 9039. Projection microradiography of metals, 3288. X-ray microscopy, roofing material, 5599. Projectors at the National Bureau of Standards, photometry, TN198.

Projects, two Air Force housing, heating performance

of air-to-air heat pumps, 61 11 A.

Prolonged space-wave fadeouts in tropospheric propagation, J 66D6-227, 681 (1962); TN88 (PB

161589). Promethium-147, M260-9. Prominence mechanism, loop, source of mass and energy,

6836. spectra, interpretation, 4805; 5535. Prominences, loop, and coronal codensations, 6835; 6836.

loop, non-thermal velocities within, 6835.

quiescent, emission lines, 4805. Promoted by a surface-active comonomer, bonding to dentin, 6581; 6582; 6583; 6584; 6585. Proof of Hilbert's Nullstellenstaz, 1240A.

position of the tritium in D-glucose-6-( and Dglucitol-5-t, tritium-labeled compounds VIII, J

66A1-138, 29 (1962). Propagation, TN324.

air-ground, band nine, long-term characteristics, 5451. auroral radio wave, bibliography, TN128 (PB

161629). bounded compressible plasma, modes, 6872.

characteristics, HF, equatorial latitudes, 5385.

characteristics of magneto-ionic plasma columns,

J 66D5-214, 543 (1962). coherence theories of tropospheric radio, 5950. constants for ultrasonic waves in melting and molt- en polyethylene, determination, 5987. crack, and the fracture of concrete, 4019.

direction finding and related ionospheric topics, 1955-1961, bibliography, TN127.

direction finding measurements, instrumentation, J 65D3-127, 253 (1961). disturbance through a viscous liquid flowing in a

distensible tube of appreciable mass, 788A.

diversity effects in long distance high frequency

radio pulse, J 65D3-121, 213 (1961).

earth's crust, radio-wave, J 65D2-119, 189 (1961). error in a chain of standards, 3729. fatigue crack, effect of oleophobic film, 4051.

flame, solids at low temperatures, 3882.

flat layered ground, note on the attenuation function, 5882. hydromagnetic waves in the magnetosphere, J 69D8-

545, 1113 (1965).

influence of long-term magnetic activity on medium

frequency sky wave, 9017A.

influence or irregular terrain, 6795 ; 6798. Laboratory, Central Radio, NBS, 6219. long wave-length, terrestrial radio waves—two theoretical techniques, 5538. longwaves, sunset and sunrise in the ionosphere,

effects, J 67D2-249, 119 (1963). meteoric radio wave, bibliography, TN94 (PB161595). microwave, overdense bounded magnetio-plasma,

6210. microwave whistler mode, dense laboratory plasma,

3649. microwaves through a magneto-plasma and a possible method for determining the electron velocity distributions, J 64D5-89, 509 (1960). mixed path, evaluation of convolution integrals, TN132 (PB161633). mode theory of ELF radio waves, J 64D4-72, 387

(1960). model terrestrial waveguide of nonuniform height theory and experiment, J 69D11-578, 1445

(1965). multipath, elementary considerations of the effects of in the meteor-burst communication, J 64D5-

86, 495 (1960). NBS meteor-burst project, TN86 (PB161587). new approach to the mode theory of VLF, J 65D1-

101, 37 (1961). 655
nonuniform gyrotropic media, J 69D3-469, 333

(1965). nonuniform waveguides with impedance walls, J 68D11-421, 1201 (1964).

oblique incidence over cylindrical obstacles, J 64D4-

63, 311 (1960). over plane earth through an exponential atmosphere, J 68D11-420, 1193 (1964). phenomena, magneto-ionic, in low- and very-low- radiofrequency waves reflected by the ion- osphere, J 65D1-103, 53 (1961). plane electromagnetic waves past a shoreline, J

66D3-200, 319 (1962). plasma waves in a "spoke-wheel" magnetic field, J 68D3-349, 325 (1964); J 69D9-556, 1227

(1965). problems with space radio communications, J 66D4-

202, 375 (1962).

pulses in dispersive media, J 69D11-572, 1387

(1965).

reflected shock wave in a transverse magnetic field, 6316. research, summary of VLF and ELF, J 64D6-96, 647 (1960). skywave radio, high frequencies, prediction of ion- ospheric characteristics at CRPL, 6306.

solar particles and the interplanetary magnetic

field, 4862. spherical earth, theory of mixed-path ground-wave,

J 65D4-145, 401 (1961).

spherical waves through an ionosphere containing

anisotropic irregularities, J 66D5-223, 621

(1962).

sporadic-!? with the 3 mu sec pulses, 4933. 9300 Mc, studies of within-the-horizon, 5711.

studies using direction-finding techniques, J 65D3-

120, 197 (1961).

technical factors in radio spectrum utilization, 6315.

terrestrial radio waves of long wavelength—theory

of zonal harmonics with improved summation

techniques, J 66D6-234, 737 (1962). time of a radio pulse, 5784. transequatorial, observation and analysis, J 68D11-

429, 1251 (1964). UHF, beyond the horizon, note regarding the mechanism, 3388.

vertically polarized electromagnetic waves in a

horizontally stratified magnetoplasma, J 69D5-

504, 693 (1965). wave, around a curved boundary which contains an

obstacle, 5127. wave, high-frequency, laminar nature of the exo- sphere, 4076. waves across a magnetoplasma-vacuum boundary, J 69D6-513, 807 (1965). Propagation electromagnetic, pulses in a homogeneous

conducting earth, 3727. pulses in terrestrial waveguides, 8961. pulses over the earth's surface, 4434. radiation at optical frequencies, survey of the liter- ature, TN225.

signals emitted from nuclear explosions to study

of long-range VLF, 9099. wave, relativistic damping effects in a uniformly magnetized electron-positron gas, 6727. waves along a thin plasma sheet, 3728. waves along the earth's surface, 5035. waves in a cylindrically stratified plasma, 6511. waves through a continuously varying stratified anisotropic medium, J 68D4-356, 407 (1964). Propagation ELF, electromagnetic waves, 3377. pulses in the earth-ionosphere waveguide, 4809. radio waves and the influence of a nonhomogeneous

ionosphere, 3690.

radio waves, proceedings of 1960 conference, TN61

(PB161562). waves below an inhomogeneous anisotropic iono- sphere, J 68D1-322, 103 (1964). Propagation, groundwave, electromagnetic signal, with

particular reference to a pulse of nuclear origin, 8962. inhomogeneous earth, calculated curves for, with pronounced topographical features, J 69D7-536,

1011 (1965). land and sea paths, curves, 5273. Propagation, groundwaves, across an abrupt boundary

at perpendicular incidence, model experiments, J 69D10-571, 1375 (1965). Propagation, ionosphere, 4245. Propagation ionospheric, high frequencies, 6816.

effects upon earth-space radio, 5890.

radio, Mono.80.

radio, URSI, report of U. S. Commission 3, J 64D6-

96, 629 (1960). radio-wave and ionospheric electron content, use of geo-stationary satellites, 3877.

scatter experiments, relation of turbulence theory, J 64D4-62, 301 (1960). Propagation, long-distance, ionospheric scattering effects, J 67D3-263, 287 (1963). one-hop Fi, through the auroral zone, 4150. wave hop propagation of low-frequency radio waves,

J 68D12-432, 1275 (1964). Propagation, low frequency, diffractive corrections to the geometrical optics, 3503. heavy ions, TN313.

pulses utilized in a radio navigation system, TN118

(PB161619).

radio signal, 4863. sky-wave, 3925. Propagation, radio, highlights of the radio (CCIR)

activities in the field, 3569. ionosphere, lower frequencies, 6454. low and medium frequency, 3605. low-frequency, into a moderately rough sea, J 67D5-

287, 551 (1963).

nonreciprocity, 6377. prediction service, 3575. quality in the North Atlantic area 1953-1960, 4254.

reflection from meteor trails, 6329. research, data reduction instrumentation, TN111

(PB161612).

terrestrial waveguides, 5646. VHF, data for Cedar Rapids-Sterling, Anchorage- Barrow, and Fargo-Churchill test paths—April 1951 through June 1958, TN79 (PB161580).

wave, TN335. wave during World War II, 4877. wave, process of reflection, J 66D3-195, 273 (1962). wave, system loss, 3326. waves at frequencies below 300 Kilocycles, phase

variations in VLF propagation, 6284. waves, lower atmosphere, Mono.92. waves with frequency 99.9 Mhz as a function of the

vertical structure of the atmosphere derived from daily radiosonde observations, J 68D2-

340, 257 (1964). Propagation, radiofrequency electromagnetic fields in geological conductors, J 67D2-252, 161 (1963). Propagation, tropospheric, 6514. experimental results of investigations, J 64D6-96, 615 (1960). forward scatter, carrier-frequency dependence of the basic transmission loss, 3456. microwave line of sight, paths and associated subjects, bibliography, TN302.

monthly median refractivity gradient, 1491A.

point-to-point, and sitting considerations, characteristics, TN95 (PB161596).
prolonged space-wave fadeouts, TN88 (PB161589).

radio, URSI, report of U. S. Commission 2, J 64D6-

96, 607 (1960). radio waves, bibliography, TN304.

scatter, power structure of the variation of a carrier envelope, 3344.

(theories), J 64D6-96, 612 (1960). Propagation, VLF and ELF radio waves when the ion- osphere is not sharply bounded, J 66D1-173, 53

(1962). during a suddent ionospheric disturbance (SID),

attenuation coefficients, J 65D6-158, 547 (1961). Propagation, very low frequency, 5121; 5850. attenuation for East-West and West-East daytime, using atmospherics, 3907. compressible ionosphere, J 68D7-376, 795 (1964). D-layer characteristics, relation between, 6473. earth curvature and the terrestrial magnetic field, earth-ionosphere waveguide, TN114 (PB161615).

earth-ionosphere waveguide of non-uniform width, 5120; 5851. ionosphere height, 4081. ionospheric depression of finite extent, 6247. phase variations, propagation of radio waves at frequencies below 300 kilocycles, 6284.

possibility of rejecting certain modes, 4207. theory, 4713. Propagation, VLF radio, justification for neglecting the compressibility of ionospheric, 6822.

signal, effects of a small local change in phase

velocity, J 68D6-368, 709 (1964).

spherical earth and a concentric anisotropic ion- osphere, comment on the mode theory, 5242. Propagation, VLF radio waves, along the magnetic

equator, 5509. between the earth and the ionosphere, 6449. earth-ionosphere waveguide, influence of an inhomogeneous ground, J 69D7-531, 969 (1965).

influence of finite ground conductivity, J 69D10-

570, 1359 (1965). two-dimensional treatment of mode theory, J 68D1-

320, 81 (1964). Propagation, VLF waves, over distances between 1000 and 3000 km, J 68D1-309, 15 (1964). disturbed conditions, J 68D1-324, 115 (1964). great distances, influence of the lower ionosphere, J 67D4-271, 375 (1963). Propane, electrical fields in the gamma radiolysis, 6007. gas-phase radiolysis, 4670; 6448. isobutane, and isobutane-2-d, reaction of methyl-d2 radicals, 4881. microwave spectrum, structure, and dipole moment,

3647.

2,2-<22) photolysis of acetone-c?e , 4225.

ds presence of other hydrocarbons, 5066; 5114. da, radiolysis, presence of organic compounds other than hydrocarbons, 5625.

radiolysis, gas phase, 5758. Propanes, 1, 2-disubstituted, NMR studies of asymmetric ethanic rotators, 6223. Propellants and explosives, 5077. recommended materials and practices for use with

cryogenic, 8985. Proper accounting of conformation of a polymer near a

surface, 6557; 8963.

place, statistics, 6403. Properties, air in chemical equilibrium including second

virial corrections from 1,500°K to 15,000°K,

tables of thermodynamic, 9055. aqueous mixtures of pure salts : thermodynamics of the ternary system water-potassium chloride- barium chloride at 25 °K, J 69A5-365, 439

(1965). atmospheric noise at various receiving locations, J

64D6-96, 640 (1960).

atomic and molecular, NSRDS-NBS3, Sect. 1. barium fluoride, refractive, 6340. calcium aluminoferrite hydrates, BSS6.

classification of inorganic compounds, 5233. cement and concrete, BSS2, Part 1. cements, physical, based on zinc oxide hydrogenated

rosin, o-ethoxybenzoic acid and eugenol, 6290. chemical thermodynamic, selected values, TN270-1

;

TN270-2.

chrome-retanned leather, effect of outdoor exposure,

5311.

concrete, predicting compressive strength, 5994.

contact, thin films on semiconductors, 5741.

controlled, ionic solids, impurity, 5402. copper and four bronzes, low-temperature tensile, 3244. dental amalgam made from spherical alloy particles, 4864.

dielectric, solid polymers, 4583. dirty contacts on semiconductors and resistivity measurements by a two-terminal method, 4926. electromagnetic, quantized relativistic electron-posi- tron gas, 6726. electromagnetic, uniformly magnetized electron gas, TN207.

empirical distribution function of a random process, J 65B2-50, 117 (1961).

ferrites, microwave, J 64D6-96, 755 (1960).

gases, thermodynamic, 5817.

glass, mechanical, elevated temperatures, 5472. impact, tensile, selected materials from 20 to 300 °K, Mono.63.

interfacial, polyesters at glass and water surfaces, 3233.

ionic solids, impurity controlled, 6792.

iron and iron alloys (high purity irons (00.0+%

Fe)), 4246.

iron and steel, heat treatment, Mono.18.

liquids, acoustic, 5178. long-distance tropospheric circuits, path antenna

gain, 5555. magnetic deflection systems, 3989. magnetic, some ilmenite hematite solid solutions, 5455; 6186. materials, low temperature, 5675. measurement of thermal radiation, 5306. mechanical, high polymers, 5666; 6372. mechanical, materials, 4757. mechanical, microstructure, M257, Paper 4, p. 41. moist air, plans for proposed new tables of thermo- dynamic, 8944. mortar, strength of masonry, Mono.36.

neon, preliminary thermodynamic, 6307. new or modified excitation sources, 3776.

noise, lower atmosphere, radio thermal, 5785. normal and parahydrogen, 6317.

optical, beryllium in the ultraviolet from electron energy absorption, 8925.

optical, calcium fluoride, 5160.

optical materials, proposed standard for measuring

and reporting physical, 8964.

optical, relation of emittance, J 67C3-132, 217

(1963). parahydrogen, survey of current NBS work, 6414. paramagnetic salts, very low temperature data,

5853. physical and mechanical electrodeposited copper,

8942.

physical, organic denture base materials, 5676. polystyrene networks formed from oriented chains,

6376. preparation of difluoroborane, 6308. properties of the vapor pressure curve, 3691.

rutile (titanium dioxide), 3288A; 3345. semiconductors, 5601. 657
(sensitometric), number, and structure of devel- oped grains, 6333. silica-reinformed polymer for dental restorations, 5600. silico-phosphate cements, 4865.

solids, definitions and formulas, 5333.

spectral, plants, 9028.

stress-strain, textile yarns subjected to rifle bullet impact, 9046.

tensile, amalgams, 4928. thermal, 5059. thermal radiation, solids at low temperatures, 5822. thermodynamic and transport, 4860; NSRDSNBS2.

thermodynamic, cryogenic fluids, 6435. thermodynamic, neon from 25 to 300 °K between

0.1 and 200 atmospheres, 9113. thermophysical, argon from 0 to 300° K, biblio- graphy of, TN217.

thermophysical, zirconium hydrides, 5084. thermostatic, solids, classical diagram technique

for calculating; application to dielectric susceptibility of paraelectrics, 6635. thorium dioxide from 298 to 1,200 °K, thermodynamic, J 65A2-92, 105 (1961). time-dependent, isotopically disordered one-dimensional harmonic crystal lattices, numerical

computation, 5522. Properties, electrical, 6017. aluminum for cryogenic electromagnets, TN218.

elastomers and related polymers, 5318. materials, problems and prospects, 5594. nonstoichiometric semiconductors, 4622. porous graphite contact on p-type silicon, 4917. standard tests, 4937. Property, linear frequency modulation, 4436. Montel, normal functions and interpolation in H",

5512. relationship: macroscopic deformations of alkylene

sulfide crosslinked polycaprolactam fibers, J

66A1-143, 77 (1962). structure studies, polymer, at the NBS; thermal

stability, 6299. Propionaldehyde and the butyraldehydes, photolysis, 5065. Propionamides, formamides, and acetamides, electrolysis, 6444. Proportional, collisions, energy, and arbitrary magnetic induction, radio wave reflections at a con- tinuously stratified plasma, 5623. counter, fast-neutron, dosimeters, energy dependence, 5335. Proposal, electro-magnetic sorter, 3288B.

field trial of the 1959 CIE supplementary standard

observer, 6069. Proposed experiment, measure effects of roughness on

the dose rate from fallout radiation, 5602. measurement of the velocity of light employing

the Mossbauer effect, 4437. nomenclature for linear viscoelastic behavior, 4247.

specification for impression material; synthetic rubberbase, 3730. standard for measuring and reporting physical

properties of optical materials, 8964. Propyl chloride, microwave spectrum of normal, 5775.

(sec) ions, hydride and proton transfer reactions, 6120. Propylene, activation energy for hydrogen atom addition, 4344. butadiene, reaction of sulfur, hydrogen sulfide, and

accelerators, J 65A1-88, 79 (1961).

ethylene, copolymers: infrared, crystallinity, and

creep studies, 6052. ethylene-propylene copolymers in infrared spec- troscopy, determination, 5286.

molecular structure, 4182. polymerization, high pressure, radiation-induced,

5616. vacuum ultraviolet photochemistry, 9127. Prospects and problems, electrical properties of materials, 5594. Protected areas, mechanical design, 4756. Protection, against radiations from sealed gamma

sources, H73.

circuit, klystron, 5438. frequencies for radio astronomy, J 67D2-247, 99

(1963).

load, triggered fuse, 6512. medical X-ray, up to three million volts, H76.

radiation, standards, 3767. standards, philosophical influences on radiation, 8936. Protein, fibrous, melting and recrystallization, 4615. fluorometric demonstration of tryptophan in dentin and bone, 6076.

insoluble, of tooth and bone, characteristics, 5947. Proteins, fibrous, nonaqueous media the melting (con- traction) and recrystallization, 5773. Proton event, solar, diffusive model for the initial phase,

5873.

events, conjugate observations of solar: delayed

ionospheric changes during twilight, 6655.

flares, longitude distribution, 6834.

fluorine NMR spectra of HBF2 , 6318. groups, form and angular distribution of, at about Q-0 Mev in the proton spectra of (d, p) re- actions of heavy nuclei, 5364. magnetic resonance in clay minerals, 4866. range measurements, multiple scattering corrections, 6218A.

spectra, of (d, p) reactions of heavy nuclei, form

and angular distribution of proton groups at about Q-0 Mev, 5364. spin-spin coupling constants, 4892. transfer reactions between H3 + and saturated hydrocarbons, 6319. transfer reactions, equilibrium constants, 5339. transfer reactions involving sec-propyl ions, hydride, 6120. transfer reactions occurring in the gas-phase

radiolysis, 6320. Protons, alpha particles and mesons, penetration, 5556.

Vz and 1, excitation of Ns and 02 , 3207.

fast, dissociative ionization of H2 , a study of angular and energy distributions, 5300.

fast, ionization of atomic systems, TN185.

mesons, energy loss straggling; tabulation of the Vavilov distribution, 6041. penetration, alpha particles, and mesons, 5556. Prototype, relaxation, pressure broadening, 5589. rubidium vapor frequency standard, 3392. standards, 6827. Provers, Bell-type, bottling and strapping, calibration, 6620. Proving ring calibration error, 9125. Provisional thermodynamic functions for para-hydrogen, TN130 (PB161631).

Pryolysis of polyolefins, 3731. P=S bond, structure of 0,0'-diethyl methylphosphonothioate and conjugative properties of, 3874. Pseudopentagonal twins in electrodeposited copper dendrites, 6321. Psychrometric measurement techniques in air condi- tioning calorimetry, 6597. Pt 27, history, 5005. p-type silicon, 4917. Publications of the National Bureau of Standards July

1, 1957, to June 30, 1960. (Includes titles of papers published in outside journals 1950 to 1959), M240. 658
program, ADI auxiliary, 5903A.

Pulsations, long-period very low frequency emission,

6833. Pulse-code modulation frequency-shift system, 4997. error rate in multiple frequency shift system and

the output signal noise ratio in frequency modulation and, 6446. error rates in multiple frequency shift system and

the signal-to-noise characteristics, TN167.

Pulse, compression, ionospheric sounding, J 68D10-415,

1155 (1964). compression techniques to ionospheric sounding,

note on the application, J 69D8-550, 1191

(1965). frequency meter, TN237, p. 1. height analysis, 4518.

laser, study of anthracene fluorescence excited by

the ruby giant, 5165. measurement at 100 kc, oblique incidence, 5525. nuclear origin, propagation of the ground wave

electromagnetic signal, 8962.

radio, propagation time, 5784.

signals, coded, ionospheric sounding, J 68D10-415,

1155 (1964). voltage comparator measures height of positive or negative pulses, 4248. waves, arterial, improved transducer for external

recording, 5401. Pulsed and CW sinusoidal voltage and current measurements, J 68D5-360, 533 (1964) ; 6322. oblique HF ionospheric transmissions, statistical properties, J 66D6-232, 721 (1962). radio soundings of the topside of the ionosphere

in the presence of spread F, 4867. refrigeration system for cryogenic magnet application, 6558. time-of-flight mass spectrometer, linear observation

of the products of ionic collision processes and

ion decomposition, 8905.

Pulses, behavior of coaxial cable connectors for, with nanosecond risetimes, 5933. electromagnetic, 4434. electromagnetic, terrestrial waveguides, propagation, 8961.

positive or negative, 4248. propagation, dispersive media, J 69D11-572, 1387

(1965).

sferic, 4612. Pump, low-frequency, parametric amplification, 4215. Pumped magnetometers and related experiments in high magnetic fields, optically, 6275. Pumping of lasers, nonequilibrium chemical excitation and chemical, 6891. Pumps, air-to-air heat, at two Air Force housing

projects, heating performance, 6111A.

air-to-air heat, split-type residential, 4828. Punch-card, radiosonde, records for radiometeorological

studies, 4143. Pure absorption model for the line-blanketing effect, difference between a non-LTE, 6641. aluminum oxide grown by the Verneuil process, I. Electron microscopy and diffraction of synthetic corundum crystals, 6730. applied chemistry, the role of the international union, 5792. gum rubber vulcanizates, 4554. molten sodium nitrate, transference numbers, 5827. substance and measurement, 4249. wave type, new differential operator, 6552.

Purification, automatic gas chromatography, J 66A3-

160, 255 (1962). programs, TN273.

synthesis, and physical properties of seven twelve- carbon hydrocarbons, J 67A5-236, 475 (1963). vapor pressure of pure nitric oxide, 4250.

Purified AT-methylpropionamide from 20° to 40°, con- ductance of potassium chloride, 5967. Purity analysis of highly purified materials by time- temperature cryometry, J 67A3-212, 247

(1963). Purple and green sulfur: electron spin resonance studies, 3561. Purpose coding systems for statistical calculations, 9126. P-V-T data of normal hydrogen from saturated liquid

to 80°K, compilation and correlation, 3376. Pyranoid sugars and derivatives, 3119. conformations, J65A3-109, 249 (1961) ; J 64A5-65,

405 (1960). Pyranoses, reducing, acetylated, and some 1-acetamido pyranoid derivatives, infrared absorption spectra, J 65A1-81, 31 (1961). Pyrene, naphthacene, naphthaphene, chrysene, and tri- phenylene, 6027. Pyrenediones, separation, column chromatography, 9004. Pyrex, mass spectrometric study of the recombination

of bromine and chlorine atoms, 5460. Pyridine-iodine complex, 4663. Pyrolysis, 4868. ftuorocarbon polymers, J 65A3-106, 227 (1961). fluoropolymers, 6323. linear copolymers of ethylene and propylene, J

65A3-105, 221 (1961). polymers at temperatures up to 1,200 °C, J 66A5-

175, 401 (1962).

polytrifluoroethylene : influence of gamma radiation and alkali treatment, 6324. Pyrolytic and radiolytic initiation, mechanism of the depolymerization of polytetrafluoroethylene, J 70A2-387, 115 (1966).

techniques, 8965. Pyrolyzates of polystyrene and poly (methyl methacrylate) by gas chromatography, 3974. Pyrometer, high speed ratio, 4423.

optical, readings, corrected, Mono.30.

photoelectric, 1961, NBS, 4927; 5024.

optical, theory and methods, Mono.41; 5071. Pyrrolidinium ion and related thermodynamic quantities from 0 to 50°, dissociation constant, 5299. Pythagorean theorem in certain symmetry classes of

tensors, 5036. Q Q meter, measurements up to 260 MHZ, 5604. Q-meters 50 kHz to 45 MHz, standards for the calibration, J 68D4-170, 243 (1964). Q-0 Mev in the proton spectra of (d, p) reactions of heavy nuclei, form and angular distribution of proton groups, 5364. Quadratic, binary, form as a sum of four squares,

application of quaternions, 2027A. forms, approximations to distribution, 6607. forms, bounds for cofactors and arithmetic minima,

5215. forms, copositive and completely positive, 5262. Quadrature formulas, for the interval (-00,00), 5881. Gaussian, nonpolynomial functions with indefinite or complex weight functional; multiple sums,

integrals, and derivatives; fractional trans- formations, 3217. numerical, on a sequence of points, J 70B2-172, 127

(1966). Quadrupole, coupling constants, microwave spectrum of hydrazoic acid, 5605.

effects in the nuclear resonance of In"5 in a noncubic environment, 5898. fundamental of molecular hydrogen rotation-vibration interaction correction, 6144. Qualitative feature of photoionization spectra, 4197.659
Quality, radio propagation, North Atlantic Area 1953-

1960, 5620. Quanta, decay, gas lasers, breadth, 6615. Quantameter-P2-4 intercomparison, J 68A6-319, 703

(1964).

Quantiles, distribution, in samples from a bivariate population, J 64B3-31, 145 (1960). multivariate distribution, on the asymptotic joint normality, J 68B2-118, 65 (1964). Quantitative analysis, direct, microstructures by a digital computer, 5992. formulation of Sylvester's law of inertia, 3123A.

metallographic evaluations of, graphitic microstructures, 5606. metallography with a digital computer; application

to a Nb-Sn superconducting wire, J 67A2-200,

127 (1963). separations: titrimetry, gravimetry, flame photo- metry, spectrophotometry, gas evolution and

isotopic preparations, July 1964 to June 1965, TN275.

values to qualitative factors in the Naval Electronics Problem, 3142A.

Quantities, related thermodynamic, from 0 to 55 deg., second acid dissociation of N, N-Di-(2-hydroxyethyl) -glycine, 6359. UHF electrical, measurement and standardization

of LF, 6853.

units, dosimetry in diagnostic radiology, 5607.

units, radiation, 1962, H84.

Quantity, fourth fundamental, angle, J 66B3-78, 97

(1962). Quantized relativistic electron-positron gas, electromagnetic properties, 6726. Quantum field, analogies, mathematical basis. Statistical theory of electromagnetic waves in a

fluctuating medium (II), Mono.79.

field theoretic techniques and the electromagnetic

properties of a uniformly magnetized electron

gas, TN207.

levels, resolved, 4710. mechanical calculation of harmonic oscillator transition probabilities in a one-dimensional impulsive collision, 3731A.

mechanical calculation of harmonic oscillator transition probabilities. II. Three-dimensional

impulsive collisions, 4869. mechanical study of the hydrogen biomolecular ex- change reaction, 4870. mechanical systems to all orders in the density, generalized master equation, 6102. mechanics, one particle transitions and correlation, J 69A2-338, 167 (1965). mechanics with application to relaxation, Liouville representation, 6179.

statistical mechanics of isotope effects, 4251.

statistics and lasers, J 68D9-404, 1031 (1964).

statistics of fully ionized gases, 8966.

statistics, the Wigner function and transport

theory, 4929. theory of interference effects in the mixing of light from phase-independent sources, 4252. Quarterly radio noise data, TN18-3 to 18-13 (PB151377-

3 to PB151377-13) ; TN18-14 to 18-25. Quartz-crystal oscillator as measure with an ammonia

maser, 3299. Quartz crystals at low temperatures, 3288C.

high silica glass, and vitreous silica, 6780.

oscillators, spectrum analysis of extremely low fre- quency variations, 5683. prestressed, fused silica, and aluminum, 4503; 5931. Quasi-equilibrium theory of mass spectra, 5608. longitudinal approximation in the generalized theory of radio wave absorption, J 68D2-336,

219 (1964).

Quenching, optical, of photoconductivity near the band

edge in CdS, 8926.

triplet state of acetone and biacetyl by azoalkanes,

8967.

triplet state of acetone and biacetyl by various unsaturated hydrocarbons, 8968. Quest for design data, 6471. Question regarding atmospheres with a temperature

inversion, 5158. Questions of general background and methodology re- lating to aerodynamic phenomena in stellar atmospheres, 4252A.

Queueing, pedestrian, J 67B4-105, 229 (1963) ; 4808. Queues, pedestrian, effects of a distribution on gap ac- ceptance functions, J 68B1-113, 31 (1964). Quick method for estimating the stage of the sunspot

cycle, J 65D6-166, 637 (1961). Quiescent prominences, emission lines, 4805. Quiet ionosphere, mid-latitude, diurnal and seasonal changes in structure, J 66D3-198, 297 (1962). ionosphere, temperature control of the structure and variations, 5725. sun 1964-1965, years, international geophysical

calendar, 5422; 6151.

8-quinolinol precipitation of the elements, 3732. R

Radiations, experimental study of beta decay, from

oriented nuclei, TN93 (PB161594). R

n

, new criterion for the univalence of transformations,

3361. Radar, and elevated instruments, and investigation of

clear air stratification, J69D6-520, 877 (1965).

angels, J 69D6-521, 881 (1965). astronomy, some remarks on the use of statistics, J 68D7-382, 849 (1964). astronomy, statistical methods; determination of surface roughness, J 67D6-305, 763 (1963). auroral reflection data, comparison, with acoustic wave theory, J 69D7-529, 959 (1965). corner reflectors for linear or circular polarization, J 66D1-171, 23 (1962).

cross sections of plasma bodies at the plasma fre- quency, J 69D2-458, 231 (1965).

detection of surface roughness, J 65D5-147, 427

(1961) . echoes from Venus at 50 Mc/s, 6325. equatorial electrojet, 9014. meteorology, J 69D6-523, 893 (1965). observations of new forms of ionosphere scatter, 4265. observations of Venus in the Soviet Union in 1964, J 69D12-617, 1634 (1965).

optical, using a corner reflector on the moon, 8927. Peru, Jicamarca, radio astronomy observations with 8.4 lOW 50 Mc/s antenna, 8972. planetary, spectral measurement techniques, J

68D9-403, 1025 (1964).

reflections from a rough moon, J 66D3-189, 215

(1962) . reflections from the moon at 425 Mc/s, J 67D2-248,

107 (1963). scattering from coated perfect conductors: application to the semi-infinite cone and use of exact

eikonal, J 68D6-373, 749 (1964). scattering from Venus and Mars at 12.5 cm, J

69D12-615, 1630 (1965).

studies, decameter-wave, of the lunar surface, J 69D12-619, 1659 (1965).

studies of planetary surfaces, a review, J 69D12-

609, 1617 (1965).

studies of the Moon, J 69D12-618, 1637 (1965).

studies of the sun, moon, and planets, J 68D5-361,

565 (1964). 660
terrain return, polarization and depression-angle dependence, J 64D5-83, 483 (1960).

Radial, distribution, data processing system for the automatic transformation of observed plasma

intensities, 5982.

distribution study of vitreous barium borosilicate, J 67A1-193, 37 (1963) ; 5609.

electron, functions and tangents of phase shifts for

light nuclei (Z=l through 10), tables, Mono.81.

flow apparatus for determining the thermal con- ductivity of loose-fill insulations to high temperatures, J 67C2-126, 129 (1963). ground wire system, E'-field and H-field losses around antennas, J 66D2-187, 189 (1962).

integral parameter, 5828. wire ground system on an imperfectly conducting

half-space, impedance of a monopole antenna, Part II, J 68D1-328, 157 (1964). Radially inhomogeneous sphere, electromagnetic scat- tering, 5325. Radiance, given, scheme for obtaining integral and

fractional multiples, 5163. high ultraviolet, stable arc source, 6563. scheme for obtaining integral and fractional multiples, 5652. Radiant, energy from sources in the far infrared, 5037. energy source on bitumen oxidation, 6128. panel flame-spread method, 3542. panel methods, surface flammability measurements,

4960. Radiation, acoustic, pressure on a circular disk, 941A.

admittance of an insulated slotted-sphere antenna

surrounded by a strongly ionized plasma

sheath, J 64D5-91, 525 (1960). aperture in a coated plane, J 68D4-354, 363 (1964). beam mapping with photographic film, 4871. conductance of an axial slot on a cylinder, a note

on, J 69D3-482, 447 (1965). construction of calorimeters for the measurement

of absorbed dose, TN163.

cylindrical sample of a strong absorber, absorption,

3128. decay, synchrotron, further observations, 6095. deep penetration (nuclear reactor theory), 4023.

detecting, 3495.

detectors, 5611.

detectors, silicon semiconductor, low temperatures,

investigation of the anomaly, 6813. distribution of scattered, from CO60 sources, in- tensity and spectral, 5764. dose distributions with photochromic materials, measurement, 6854.

effects on man, 5612.

efficiency of half-wave dipole antennas, 8969.

electrons in a magnetoplasma, J 69D5-510, 741

(1965). emitted and reflected, characteristics of soil and

vegetated surfaces, 6630. exposure at the walls of medical X-ray rooms for determining protective barrier requirements, measurement, 3628. exposures by means of photographic film, TN161.

external, norms, problems in the application, 5595. hazard in space, 5089. hazards in realistic perspective, 4872.

heat, and oxidation, 4847. hydrogen, in the night sky, interplanetary gas, 3234. imaging technique for thermal conductivity meas- urements above 1,000°C, 4792. impedance, a source near reflectors, 5613.

infinite axial slot on a circular cylinder clad with magnetoplasma, J 69D4-489, 529 (1965). instrumentation, H92.

intensity standards for high-energy, 3906.

ionizing, and constitution of the atmosphere, 6159.

ionization of liquids, 251A.

Jupiter's decametric, results of recent investigations, J 69D12-584, 1530 (1965).

Kirchhoff's Law and its generalized application, J 69B3-148, 165 (1965). large CSW7 sources, 4905. lightning discharges, radiofrequency, J 64D6-96, 638 (1960).

lossless magneto-ionic medium at frequencies high

relative to the electron gyrofrequencies, J

67D6-300, 707 (1963). Lyman alpha, ion atom collisions, 4861. nuclear standards of importance to the National Atomic Energy Program, TN283.

optics, and metrology, precision measurement and

calibration, H77, Vol. III. outer-zone, November 28, 1959, correlation of an

auroral arc and a subvisible monochromatic

6300 A arc, 3486. photographic response to successive exposures of

different types, 4223. physical environment, 3855. Physics Division, NBS, research program, TN92

(TB161593).

plasma-clad axially-slotted cylinder, J 67D2-257,

203 (1963). plasmas, J 68D4-359, 480 (1964).

properties, TN267.

. properties, thermal, measurement, 5306.

protection, direction and meaning, 3767. protection standards, 3735; 8936.

quality, specification and measurement of, H85.

quantities and units, 1962, H84.

resistance and irreversible power of antennas in anisotropic ionized gases, J69D10-565, 1313

(1965).

resistant polymer-poly (tetrafluoroethylene) , 3282.

slot on a large corrugated cylinder, 3733.

slotted conducting plane in a plasma environment,

theory, TN223.

sound by ocean waves, 4873.

stochastic theory, current topics, J 68D9-398, 989

(1964).

stray, measuring the spectral emittance of diffusely

reflecting specimens, avoiding errors, 6610. techniques, TN276.

techniques, radioisotope techniques, activation

analysis, and instrumentation, July 1963 to June 1964, TN284.

thermal, studies in Yellowstone Park, 4412. thermocouple, thermometry above 900 °K, 5816. through cylindrical plasma sheaths, J 67D6-301,

717 (1963). transfer problems, rocket ultra-violet lines, 5617.

useful, from an underground antenna, J 65D1-106,

89 (1961). uniformly moving charge in an anisotropic, two

component plasma, J 69D5-511, 767 (1965). Venus at the 13.5-mm water-vapor line, J 69D12-

598, 1577 (1965). world we live in, 5610. X and gamma, wide energy range, measurement,

152A.

zone, Van Allen, outer, correlation of visual and

subvisual auroras, 4018. Radiation, cobalt-60, calibrating sources, 4906. gamma, air ducts, TN74 (PB161575).

intensity and spectral distribution of scattered, 9082. Radiation, electromagnetic, cylindrical structures, 3199.

electro-acoustic waves in a plasma, 8908; 8909. experiment on the constancy of the velocity, J 68D12-430, 1265 (1964). 661
high-latitude investigation of the natural very-low- frequency, 5135. magnetic dipole with arbitrary orientation embedded in a lossless magnetic-ionic medium, J

69D5-502, 671 (1965). magneto-ionic media, J 64D5-90, 515 (1960).

optical frequencies, propagation, survey of the

literature, TN225.

Radiation, fallout, engineering method for calculating protection afforded by structures, Mono.76. from nuclear weapons, structure shielding, Mono.42. method for evaluating protection afforded by structures, 3638. proposed experiment to measure effects of roughness on the dose rate, 5602. Radiation field, aspects of non-equilibrium thermodynamics, 9015.

characteristics of lightning discharges in the band

1 kc/s to 100 kc/s, J 67D5-286, 539 (1963).

circular disk source, J 65C4-78, 249 (1961). Radiation, gamma, and alkali treatment, influence of

pyrolysis of polytrifluoroethylene, 6324. chemical structure of plastics, 4048.

collagen, 3197. Radiation-induced polymerization, and other reactions

of n-perfluoropentadiene-1,4 at high temperature and pressure, 8970. high pressure of n-tetradecafluoro-heptene-1 ; 1,1,2,- trifluorovinyl phenyl ether; and 1,2,3,4,5-penta- fluorophenyl 1,1,2-triftuorovinyl ether, 5615. high pressures, 5614. propylene at high pressure, 5616. styrene, halobenzenes as sensitizers, 3562. Radiation measurement, ionizing, low atomic number

dye systems, 6837.

ionizing, low-Z dye systems, 6839. physical quantities proposed, 3714.

sources, standards, and detectors, 6398; 9038. Radiation patterns, finite-size corner-reflector antennas,

3734. lower ionosphere and Fresnel zones for elevated antennas over a spherical earth, Mono.38. plasma enclosed cylindrical hypersonic vehicles, J 69D10-567, 1335 (1965).

Radiation, solar, cooling load of stationary refrigerated

vehicles, laboratory study, 5439A.

infrared atmospheric transmission, 3659. infrared transmission of the atmosphere, 5410. Radiation, sources, immersed in anisotropic media,

theory, J 68B3-125, 119 (1964). immersed in compressible plasma media, 6326. laboratory weathering of asphalts, comparison of xenon and carbon arcs, 6645. Radiation, thermal, properties, November 1962 to Octo- ber 1963, TN252.

properties of solids at low temperatures, 5822. standards and measurements, 5075. surface flame propagation on cellulosic materials

exposed, J 67C3-136, 251 (1963). Radiations from sealed gamma sources, protection

against, H73.

Radiative, cooling, solar heating, and thermal move- ment—their effects on built-up roofing, TN231.

corrections. I. High-energy bremsstrahlung and

pair production, 8971. formation and destruction of negative ions, 4372.

net, bracket, evaluation and application, 3868.

tail for inelastic electron scattering, 6328.

tail in elastic electron scattering, 5937; 6327. Radical free, chemistry, 3215. CCO, matrix-isolation infrared spectrum, 6848 grammer, combination in Chinese characters, TN254.

hydroxyl, emission in the 1-3 micron region pro- duced by the H+03 atomic flare, 3464.

hydroxyl, improved measurement of dipole moment,

6791. hydroxyl, paramagnetic resonance, 3278. hydroxyl, vibration-rotation, 4489. hydroxyl, vibrational excitation, 4520. infrared spectrum, 6851. NCN, infrared and ultraviolet spectra, 6850. NCN, infrared spectrum, 6802. NH2, matrix-isolation infrared spectrum, 6849. n-propyl, decomposition, 4225. trapping, 3550.

ultraviolet and infrared spectrum, 6852. Radicals, alkyl, and hydrogen atoms at low temperatures, disproportionation-combination reactions, 5996.

energetic, trapped, 3358.

frozen, dynamic stability, description and application of the model, 3190.

frozen, dynamic stability, formal theory of the model, 3191. hot methyl, added organic compounds, reactions. Gas-phase photolysis of methyl iodide, 6099. hydroxyl, H+03 atomic flame, 4445.

isobutyl, thermal reactions, 5076. isomerization of isobutyl, 5534. methyl, with dimethylmercury, 6472. methyl-d2 with isobutane, isobutane-2-d and pro- pane, 4881. OH, in flames, fluorescence and rotational relaxation, 3544A.

reactions of methyl, aromatic compounds, 5788:

5789. reactions of methyl, solid, liquid, and gas-phase

photolysis of dimethylmercury, 5787. several alkyl, relative rates at two carbon positions and derived heats of formation of: hydrogen atom addition to olefins, 6785. small free, and atoms at low temperatures, 4662. synthesis of diatomic, 6416. Radicals free, and atoms by 7 irradiations at 4.2 °K,

3146. formation and reaction, produced by hydrogen atom bombardment of polystyrene, ESR observations

of the rates, 4070. formation and trapping, 3546. gamma-irradiated polystyrenes, 3551. hydroxyl, microwave Zeeman effect, 4180. hydroxyl: 2iry2 levels, microwave Zeeman effect, 4773. irradiated materials, electron spin resonance

studies, number, 3200A.

low temperature, chemical reactions, 3463. low temperature infrared studies of the chemistry,

6183. Radio, atmospheric, refractive index, models, 3652. atmospheric, refractive index structure over North

America, 4199. auroral, wave propagation, bibliography, TN128

(PB161629).

beams, high density, excitation of optical radiation, J 69D1-444, 77 (1965).

bursts, disk distribution of flares, 3508.

bursts, 2800-Mc/s, solar flares with associated active dark filaments, 6368. (CCIR) activities in the field of radio propagation,

3569. climatology, J 68D5-361, 553 (1964). communication forecasts, solar disturbances, 4291. communication, study of lunar surface, Mono.85. communications systems, multichannel, required

signal-to-noise ratios, carrier power and bandwidth, 5641.

data, radio, TN18-3 to TN18-25.

diffraction problems, a numerical approach to the

solution, J 67D6-298, 685 (1963). 662
ducts, ground-based, and associated fading regions, TN96 (PB161597).

echoes from field-aligned ionization above the magnetic equator and their resemblance to auroral

echoes, 3736.

electrical measurements and calibrations, 1965, ac- curacy, TN262-A.

electronics, URSI, report of U.S. Commission 7, J 64D6-96, 751 (1960). ELF, waves and the influence of a nonhomogeneous

ionosphere, 3690. ELF, waves, impedance characteristics, influence of source distance, 3578. ELF, waves, proceedings of 1960 conference, TN61

(PB161562).

emission from the planets Mercury, Mars, and

Saturn at wavelength of 8 mm, observations, J 69D12-596, 1576 (1965).

emissions, decametric, of Jupiter, J 69D12-583,

1513 (1965). evidence on the structure and composition of the Martian surface, J 69D12-614, 1629 (1965). height fining, correction of atmospheric errors, J 67D2-250, 139 (1963). high-frequency, waves in auroral latitudes, 2374A.

ionosphere and airglow observations during IGY,

3289. ionosphere and IQSY, J 68D5-362, 578 (1964);

6330. ionosphere propagation in the lower frequencies,

6454.

ionospheric, predictions, world maps of F2 critical frequencies and maximum usable frequency

factors for use, 3914. measurement methods and standards, URSI, report

of U.S. Commission 1, J. 64D6-96, 591 (I960), measurements, light, theoretical study of sporadic- E structure, TN87 (PB161588).

measurements, sporadic-E structure in the light, 4457. meteorological parameter, comments on the limits

to the utilization of the refractive index, 3476A.

meteorological study, 5159. microwave materials at the NBS, measurements

and standards, M248, p. 55. multichannel, communications systems, required

signal-to-noise ratios, RF signal power, and

bandwidth, TN100.

navigation system, note on the propagation of cer- tain LF pulses, TN118 (PB161619).

navigation systems, low frequency ionospheric phenomena, 4802. observations of Jupiter II, 4253. observations of Mercury, Venus, Mars, Saturn, and

Uranus, J 69D12-595, 1574 (1965).

observations, passive, of Mercury, Venus, Mars,

Saturn, and Uranus, J 69D12-593, 1565 (1965). observatory, Jicamarca, Peru, large 50 Mc/s dipole array, 5768. path length and tropospheric refractive index, time

variations, 3423. path length stability of ground-to-ground micro- wave links, TN219.

paths, analytical formulas, spherically stratified ionospheres, J 69D3-483, 453 (1965).

properties of aurorae, 4255. pulse propagation by a reflection process at the lower ionosphere, J 67D5-281, 481 (1963).

pulse propagation, diversity effects in long distance high frequency, J 65D3-121, 213 (1961).

pulse, propagation time, 5784. ray bending in an exponential atmosphere, graphical determination, J 65D2-116, 175 (1961). ray refraction in an exponential atmosphere, for- mula, J 65D2-117, 181 (1961).

rays, defocusing, by the troposphere, J 66D4-209,

479 (1962).

rays, method of predicting the atmospheric bending, J 64D5-84, 487 (1960).

reflections from the topside of the ionosphere, a

rocket experiment, 5162.

reflectivity of the lunar surface, J 69D12-622, 1677

(1965).

refraction effects, atmospheric, with values predicted through the use of surface weather ob- servations, comparison, J 67D3-262, 273

(1963) ; 5250. refractometer to measure water vapor turbulence,

9101. refractometry, TN66 (TN161567).

refractometry and its potential for humidity studies, 8973.

signal, low frequency, propagation, 4863.

signal reflected from the moon, characteristics of 488 megacycles per second, J 64D4-65, 331

(1960). soundings of the topside of the ionosphere, 4089;

4867.

source, Cassiopeia (23N5A), variations in the amplitude scintillations, 3675. source Cygnus-A observed at Boulder, Colo., ampli- tude and angular scintillations, J 65D4-137,

333 (1961).

source, the location of the irregularities responsible for ionosphere scintillation, 5770. spectrum, efficient use, TN158.

spectrum of SH, 5621. spectrum utilization, propagation and technical

factors, 6315. standards and measurements, microwaves, 8975.

stars, scintillation, 4484.

studies of the high-latitude ionosphere during the

solar eclipse of 20 July 1963, J 69D2-462, 267

(1965).

synoptic, meteorology, TN98.

techniques, detection and study of solar cosmic rays,

4989. techniques, measurements of physical quantities, J 64D6-96, 605 (1960).

telephone, FM and SSB, tests on a VHF iono- spheric-scatter link during multipath conditions, 3552.

telescope, sugar grove, facility in the technical pro- grams of NBS, 5781. thermal noise properties of the lower atmosphere,

5785. tracking, baseline-type, systems and methods of

their correction, systematic atmospheric re- fraction errors, 6418. transmission by ionospheric and tropospheric scatter, 3737. tropospheric, refractive index, bi-exponential nature, 4011. two discrete, sources in 1963-1964, lunar ovulations, TN184.

io absorption, ionospheric, and electron precipitation in the auroral zones, 6733A. measurements at multiple frequencies, derivation

of electron density profiles in the lower iono- sphere, 5279. very low frequency emissions, on the relation be- tween auroral, 8919.

io astronomy, 5618. bibliography on atmospheric aspects, TN171.

observations with 8.4 10f m2 50 Mc/s antenna of the Jicamarca radar in Peru, 8972. protection of frequencies, J 67D2-247, 99 (1963). URSI, report of U. S. Commission 5, J 64D6-96, 655 (1950). 663
Radio frequencies, different, simultaneous observation

of radio star scintillations, 3866. medium and high, historical survey of fading, TN

133 (PB16134).

potential use of passive probing of atmospheric

structure by thermal emissions, 8950.

self-calibrating instrument for measuring conductance, J 69C2-191, 115 (1965). Radio frequency, atmospheric turbulence in line-of-sight transmissions, 5117. electromagnetic fields, propagation in geological conductors, J 67D2-252, 161 (1963).

heating, open-probe thermocouple control, 6266.

low, ground wave, TN60 (PB161561).

magnetic permeameter, equations, J 67C1-121, 69

(1963). mass spectrometer having high duty cycle, J 67C4-

139, 283 (1963). microwave power measurements, J 64D6-96, 596

(1960). peak pulse power by a sampling-comparison tech- nique, 4754. permeameter, primary, air core, for reversible per- meability measurements, 5186. permittimeter, 3393. radiation from lightning discharges, J 64D6-96, 638 (1960). transmitter spectrum characteristics, 4656. voltage bridge, NBS, functional and design problems, TN123 (PB161624).

waves, low- and very-low-, reflected by the iono- sphere, magneto-ionic propagation phenomena,

J 65D1-103, 53 (1961). Radio meteorology, J 64D6-96, 621 (1960); Mono.92;

8974. applications of the molecular refractivity, 3140.

aspects, 5205. cloud physics, J 68D5-361, 555 (1964). Radio noise, anomalies in August 1958, 5619. atmospheric, amplitude-probability distribution, J 68D6-370, 723 (1964); Mono.23.

atomic tests, 3192.

bursts, atmospheric, in the LF band at Bangalore,

J 69D10-569, 1351 (1965).

cosmic, high frequencies, dual-polarized broad beam

antennas to determine the extraterrestrial in- tensity, 5805. data, TN18-3 to 18-13 (PB151377-3 to PB151377-

13) and TN18-14 to 18-25. 50 to 100 cycles per second, measurements of the spectrum, J 64D4-76, 415 (1960). generation in the vicinity of the earth, J 66D2-182,

153 (1962).

level at low and very low frequencies in polar re- gions, J 69D9-558, 1239 (1965). measurement methods and standards, J 68D5-360, 536 (1964). observations of synchrotron, magnetic equator, fol- lowing the high altitude nuclear explosion of July 9, 1962, 5528.

predictions, atmospheric, reliability, J 65D6-160,

565 (1961).

terrestrial origin, URSI, report of U. S. Commission 4, J 64D6-96, 637 (1960). Radio propagation, highlights of the radio (CCIR)

activities, 3569. ionosphere, very low frequency, J 66D6-226, 663

(1962).

ionospheric, Mono.80. ionospheric effects upon earth-space, 5890. ionospheric, URSI, report of U. S. Commission 3, J 64D6-96, 629 (1960). low and medium frequency, 3605. low-frequency, into a moderately rough sea, J 67D5-

287, 551 (1963).

phenomena, on the analysis of LF ionospheric, J 65D5-156, 507 (1961).

prediction service, improvements, 3575. quality in the North Atlantic area 1953-1960, 4254;

5620.

reflection from meteor trails, 6329. research, data reduction instrumentation, TN111

(PB161612). remarks concerning non-reciprocity in, 6377. skywave, high frequencies, prediction of ionospheric

characteristics at CRPL, 6306.

terrestrial waveguides, review of mode theory, 5646. tropospheric, coherence theories, 5950. tropospheric, URSI, report of U. S. Commission 2, J 64D6-96, 607 (1960). VHF, data for Cedar Rapids-Sterling, AnchorageBarrow, and Fargo-Churchill test paths—April 1951 through June 1958, TN79 (PB161580). VLF for a spherical earth and a concentric anisotropic ionosphere, comment on the mode theory,

5242. VLF, justification for neglecting the compressibility

of ionospheric, 6822. VLF, some remarks on mode and ray theories, J

68D1-319, 79 (1964). Radio Propagation Laboratory, Central, NBS, 6219. Radio refractive index, air, Mono.92; 5038. climatic charts and data, Mono.22.

ground, turbulent characteristics, 5807.

profiles, radiosondes, and lag constants, 4010. techniques for measuring, TN99 (PB161600).

Radio signals, D region, J 69D3-472, 367 (1965). enhancement in the far east, 3362. fading, rapid frequency analysis, 3739. jungles, measurement of the attenuation, J 68D8-

388, 903 (1964). propagated over long distances, effect of antenna

radiation angles upon HF, J 65D2-115, 167

(1961) . received, families of distributions for hourly median power and instantaneous power, J 67D6-

304, 753 (1963).

reflected by meteor trails, amplitude distribution, J 64D5-80, 449 (1960); J 66D3-192, 241

(1962) . satellite, analysis of polarization rotation recordings, 3678A.

space analysis, J 65D3-131, 293 (1961). VLF, international comparison of atomic frequency

standards, J 69D7-524, 905 (1965) ; 6810. Radio star, scintillation technique, statistical study of ionospheric drifts, 3947.

scintillations and spread-F echoes, 5622.

scintillations, broadband, Part I, J 68D8-385, 867

(1964) ; Part II, J 68D10-409, 1095 (1964).

scintillations from ionospheric waves, J 68D2-331,

179 (1964).

scintillations on difference radio-frequencies, 3866. Radio waves, absorption during the dawn-breakup phase

of auroras, multiple frequency investigations, J 69D3-479, 415 (1965).

absorption, generalized theory of, the quasi-longi- tudinal approximation, J 68D2-336, 219 (1964). absorption of several gases in the 100 to 117 kMc/s

frequency range, J 65D1-98, 15 (1961).

diffracted by a random ionosphere, statistics, J

65D3-130, 275 (1961).

fields, LF, VLF, ELF terrestrial, complete mode

sum, Mono.78.

inversion, absorption data to establish ionospheric

properties. I. Nondeviative absorption, J

67D6-299, 699 (1963). ionospheric propagation and ionospheric electron

content, use of geo-stationary satellites for the

study, 3877. 664
phase characteristics on a high-frequency auroral

path, observations, J 66D3-197, 291 (1962) . reflection and transmission process, plasma collision frequencies proportional to energy, TN164.

reflections at a continuously stratified plasma with

collisions proportional to energy and arbitrary magnetic induction, 5623.

scattering, 4447. scattering in the ionosphere, 5627.

scattering, tropospheric, bibliography, TN80 (PB161581). Radio wave propagation, TN335.

earth's crust, J 65D2-119, 189 (1961).

meteoric, bibliography, TN94 (PB 161595). over inhomogeneous earth, theory, J 67D1-242, 39

(1963).

role of process of reflection, J 66D3-195, 273 (1962).

theory, over inhomogeneous earth, some numerical

results, J 68D7-380, 827 (1964). through mid-latitude 6300 A arcs, J 67D3-261, 263

(1963). World War II, 4877. Radio waves, absorption, Mono.92. atmospheric bending, 3440. attenuation, Mono.92. bibliography on tropospheric propagation, TN304.

biexponential nature of tropospheric gaseous absorption, J 69D6-522, 885 (1965).

circuits, URSI, report of U.S. Commission 6, J 64D6-96, 671 (1960). contribution of nonthermal electrons to auroral

absorption, 6434. ELF and VLF, between the earth and the iono- sphere, guided propagation, 6449. ELF, earth-ionosphere cavity resonances and the propagation, J 69D8-539, 1057 (1965). ELF, propagation and mode theory, J 64D4-72, 387

(1960) . extraterrestrial origin, ionospheric scintillation, 3595. frequencies below 300 kilocycles, phase variations

in VLF propagation, 6284. horizontal magnetic dipole, excitation of VLF and ELF, J 65D3-133, 305 (1961). ionospheric propagation of (1923-1960), bibliogra- phy, TN84 (PB161585).

low angles within various air masses, refraction, 3747. low-frequency, wave hop theory of long distance propagation, J 68D12-432, 1275 (1964). lower ionosphere, on the forward scattering, J 66D4-204, 409 (1962). observed attenuation rate of ELF, J 65D5-143, 475

(1961) . plasma, 5172. plasma, effect of coulomb collisions on incoherent

scattering, 6441. propagation of, with frequency 99.9 Mhz as a function of the vertical structure of the atmosphere

derived from daily radiosonde observations, J 68D2-340, 257 (1964). propagation, lower atmosphere, Mono.92. reflection and transmission at a continuously stratified plasma with arbitrary magnetic induction, J 66D1-176, 81 (1962).

reflection from undulating tropospheric layers, J 67D6-294, 609 (1963).

refraction, Mono.92.

spherical, diffraction by finitely conducting spherical earth, J 66D1-177, 101 (1962). theory of incoherent scattering, by a plasma, 5172. troposphere, attenuation, 5930. troposphere, correlation matrix, 5265. troposphere, techniques for computing refraction, TN97 (PB161598).

tropospheric refraction and attenuation, 6515. two theoretical techniques on the propagation of long wave-length terrestrial, 5538. Radio waves VLF, and ELF, propagation when the ionosphere is not sharply bounded, J 66D1-173,

53 (1962).

characteristics of the earth-ionosphere waveguide, TN300.

earth-ionosphere waveguide, influence of an in- homogeneous ground on the propagation, J

69D7-531, 969 (1965).

height-gain, J 67D2-254, 183 (1963).

ionosphere, 5852. phase velocity, 3923; 3937. propagation, along the magnetic equator, 5509. propagation, influence of finite ground conductivity, J 69D10-570, 1359 (1965).

reflection, from an inhomogeneous ionosphere. Part II. Perturbed exponential model, J 67D5-

283, 519 (1963).

reflection, from an inhomogeneous ionosphere. Part III. Exponential model with hyperbolic

transition, J 67D6-303, 747 (1963). Radioactive, carbohydrates, TN274.

contamination of materials used in scientific re- search, 4256. contamination, tongs used in testing, 4392. Radioactive, materials, safe handling, H92.

materials, transportation, H92.

nuclides, nineteen, issued by the National Bureau

of Standards, half lives of materials used

in the preparation of standard reference materials, M260-9.

sources, direct and relative measurements, H86.

sources on the roof and on the ground surrounding

a simple one-storied building, Mono.76. waste disposal, H92.

Radioactivity, calibration of the NBS tritiated-toluene standard, 9061.

low-level, materials and its relation to radiological measurements, H86.

procedures, manual, H80.

samples and living subjects, techniques for measuring, H86.

standardization at the NBS, routine methods, 3754. standardization in the U.S., 3738. Radioactivity standards, international comparisons, 3584A.

nomenclature, 3667. present and future requirements, H86.

special reference to such measurements of NBS

standards, organization of international inter- comparisons, 3853. Radioassay, both carbon-14 and tritium in films, with

a proportional counter. Tritium-labeled com- pounds V, J 64A4-61 363 (1960). Ce1M

, radioisotope dilution and its application, 8977. Radiobiological dosimetry, H88.

Radiochemical, analysis: activation analysis, instru- mentation, radiation techniques, and radioiso- tope techniques, TN248; TN276._

determination of uranium of low activity, 6331. metals to, separations, some applications of vacuum

distillation, 5665. methods of analysis (report on Salzburg confer- ence), 8976. methods of analysis, the place of: today and

tomorrow, 9090. separations, 4495. separations of cadmium by amalgam exchange,

4257. separations of indium by amalgam exchange, 4258. Radiographic, emulsions, latensification, 6826.

film, dental, X-ray apparatus, 3117.

film, standards for dental, 5692. 665
Radioisotope, dilution and its application to the radio- assay of Ce"\ 8977. study of the nickel dip, 929A.

techniques, activation analysis, instrumentation, and radiation techniques, TN248; TN276.

Radiological, equipment and materials, methods of evaluating, H89. measurements, low-level radioactivity in materials and its relation, H86.

Society of North America honoring Dr. Gioacchino

Failla, 4875.

units and measurements (ICRU) 1959, report of the International Commission, H78.

Radiology, dosimetry in diagnostic, quantitives, and

units, 5607.

Radiolysis, ethane-l.l.l-d,, 4876. ethane, effect of electrical fields and density, 6713. gamma, of ethylene, hydrogen formation, 4685. gamma, of propane, effect of electrical fields, 6007. gamma-ray, methyl acetate and acetone, 4350. gas-phase, hydrocarbons, H?-transfer reactions, 6776. gas-phase, n-pentane. A study of the decompositions of the parent ion and neutral excited pentane molecule, 6100. gas-phase, propane, 4670. gas-phase, proton transfer reactions, 6320. isobutane, gas-phase, 5374. methane, 5624. methane, effect of additives on the ionic reaction mechanism, 5307; 6005. n-butane, gas-phase, 5375. N

15N"0, J 69A2-330, 79 (1965).

photolysis, direct and inert-gas-sensitized, methane

in the solid phase, 6696. photolysis of 4-methyl-2-hexanone, 4132. photolysis of methane, effect of pressure, 6009. propane-d", presence of organic compounds other than hydrocarbons, 5625. propane, gas phase, 5758. propane, gas phase. Effect of pressure and added

inert gases, 6448. vapor, propane-ds in the presence of other hydrocarbons, 5066; 5114. Radiolytic stress relaxation of an ethylene-propylene copolymer, 8978. Radiometeorological, effects on beyond-horizon propagation, preliminary study, J 64D3-53, 239

(1960). parameters, Mono.92.

studies, limitations of radiosonde punch-card rec- ords, 4143.

study, part I. Existing radiometeorological parameters, J 67D6-291, 589 (1963).

study, part II. An analysis of VHF field strength

variations and refractive index profiles, J 67D6-292, 597 (1963).

study, part III. A new turbulence parameter, J 67D6-293, 605 (1963). Radiometeorology and its importance for the trans- mission of m-, dm- and cm waves to long

distances, 4876A.

Radiometer, switched, interference rejection capability, J 69D11-575, 1425 (1965). Radiometers, microwave, precise standardization of noise sources, analysis, J 67C2-127, 139 (1963). Radiometric, analysis, substoichiometric, 9050.

calibrations in the ultraviolet spectrum, 5034.

detectors, thermoelectric, some factors affecting the sensitivity and spectral responses, 9019. techniques, TN276.

Radiometry, 5075; 5626. far ultraviolet, absolute, use of thermopiles, 8921.

Radionuclide, intake, weighted, mathematical program- ming models, for selections of diets to minimize, 5461. Radionuclides, beta-emitting, aqueous formamide solutions, 4990A.

electron-capturing, 4576. gaseous, standardization of, recent work with compensated internal gas counters, 3745. Radiosonde flights, element, performance of the barium

fluoride film hygrometer, 5557. observations and mountain slope, 6544. observations, daily, propagation of radio waves

with frequency 99.9 Mhz as a function of the

vertical structure of the atmosphere derived, J 68D2-340, 257 (1964). punch-card records for radiometeorological studies, 4143. Radiosondes, lag constants, and radio refractive index

profiles, 4010. Radiotelescope, large, electronic scanning, 5334. Radium sources, encapsulated, calibration, correction

factors, J 66A2-145, 103 (1962).

Rail steel bars, CS150-63. Ram-operated device, hydraulic, control system, TN237, p. 7. Raleigh interferometer (multi-slit, high-intensity) to sedimentation studies, 6604. Raman, effect, coherent, off-axis Raman resonator,

5951.

laser excited by an ordinary ruby laser, 6628. resonator, off-axis, coherent Raman effect, 5951. Random, chain scission by stress relaxation, measurement, 6257.

effects (model II), 851A. numbers aren't nonsense, 2278A.

process, properties of the empirical distribution function, J 65B2-50, 117 (1961).

processes, J 64D6-96, 674 (1960).

processes, nonlinear problems arising in the study,

J 68D9-393, 933 (1964).

variable, 4547. volume scattering, J 68D9-396, 967 (1964). walk calculations of diffusion coefficients, 8979. walk model of chain-polymer adsorption at a surface, 8980. walk model of chain polymer adsorption at a surface. II. Correlation between neighboring steps, J 69B4-159, 301 (1965). walks and difference equations, neighbor sets, 1782A.

walks, note on the inversion of matrices, 370A. Range, current densities with a resistive cathode, method of obtaining, 6865. Range, error compensation for a troposphere with ex- ponentially varying refractivity, J 66D6-228, 695 (1962).

fleet of aircraft, J 65B4-61, 237 (1961). frequency, brightness temperature of the atmosphere using a bi-exponential model in the 6-45 GH; , 5935. geomagnetic micropulsation, frequency studies, 5710. measurements, proton, multiple scattering, 6218A.

natural electromagnetic field fluctuations in the

3.0 to 0.002 cps, 5500. photographic dosimetry, megaroentgen, 5562. photographic megaroentgen, 5563. rate errors, and residual range, due to the troposphere, 5643. rotating shutter for time-resolved spectroscopy in the micro-second, 9001. 300° to 76°K, elastomers in the, linear thermal ex- pansion, 5447. wide dynamic, magnetic tape recording and repro- ducing of atmospheric noise, 6187. 666
Ranges and energy losses, electrons and positrons,

tables, 6420. heavy charged particles, tables of, 6421. Rank, arbitrary, error bounds for asymptotic solu- tions of second-order differential equations having irregular singularity, 6741.

one, application to Whittaker functions, on the asymptotic solutions of second-order differential equations having an irregular singularity, 8910. order patterns of common words as discriminators

of subject content in scientific and technical

prose, M269, p. 225. sum test for outliers, extreme, 5529. sum test, general application of Youden's, for

outliers and tables of one-sided percentage

points, J 68B2-116, 55 (1964). Ranking laboratories, evaluating methods of measure- ment in round-robin tests, 6332. round-robin tests, 5628. Rapid, determination of the order of chemical reactions from time-ratio tables, TN62 (PB161-

563). frequency analysis of fading radio signals, 3739. impact loading of textile yarns, 3740. impact loading, stress-strain relationships in yarns, 3795; 4646, 4945; 5706; 9047.

insertion device for coaxial attenuators, 3290. method for interpolating refractive index measurements, 4259. method of estimating the order of chemical reactions, 4438. high-resolution antenna, J 65D1-108, 101 (1961).

selector and other NBS document retrieval studies, 5039.

selector, currently used for information search and

replica copy retrieval, 5786. Rare earth, borate solid solutions, AB03 , polymorphism,

6300. double nitrates, two, 4932.

halides, preparation of anhydrous single crystals, J 67A4-223, 343 (1963).

ions, validity of crystal field theory, 5809. metals at high-pressure, allotropy, 5907.

trichlorides, low temperature magnetic transitions, 6838. Rare earth, oxides, phase equilibria studies in mixed

systems, 6283. phase equilibria in systems involving: Part I. Polymorphism of the oxides of the trivalent rare-earth ions, J 64A4-53, 309 (1960). phase equilibria in systems involving: Part II. Solid state reactions in trivalent rare-earth oxide systems, J 64A4-54, 317 (1960). phase equilibria research, 4221.

refractivities, 6341. Rare earths, atomic spectra, presence in the sun, 5734. singly ionized, ionization energies, 6814. Rare gases, crystalline, absorption spectra of diatomic molecules in liquid, 5901. electrons of sub-excitation energies, anomalous

transmission, 5920.

inelastic electron scattering from; determination

of oscillator strengths in the continuum, 6127.

line profiles in the far ultraviolet absorption

spectra, 6831.

solid state, 6477. structure beyond the ionization limit in inelastic electron scattering, 5707. use of electron energy loss measurements to ob- serve optically forbidden transitions in the continuum, 6239. Rat, comparative metabolism of Ca and Sr, 3161. Rate constant for N--

+ +02 —

N

2 +02+ at 300 deg K, cor- rection in laboratory measurement, 6659A.

dependence in a solarizing commercial x-ray emulsion: sensitometric properties, number, and

structure of developed grains, 6333.

dissociation of tetrofluorohydrazine behind a shock wave, spectrophotometric determination, 9030.

dose, from fallout radiation, proposed experiment

to measure effects of roughness, 5602.

enolization, measurement, TN274.

error, multiple-frequency shift system and the out-put signal /noise ratio in a frequency modulation and a pulse-code-modulaton/frequency-shift system, 5751; 6446. errors due to the troposphere, residual range and

range, 5643. excitation of the discharge, dependence of power

output of a gas laser on the length, 5277. experiments with resolved quantum levels, 4710.

isotopic exchange, of oxygen atoms with O?, NO,

and N02, mass spectrometric study, 6192. loading, effect, time of trituration and test temperature on compressive strength of dental amalgam, 5312. measurements with a single-pulse shock tube, 5958. physical adsorption at low surface coverage, 4373. reaction NO+N, 4260. reaction NO + N, and some heterogeneous reactions observed in the ion source of mass spectrometer, J 65A5-121, 411 (1961). reaction N2+0—NO+N at thermal energy, labora- tory measurement, 6823. reaction 0

+ +02 —»02+ +0 at thermal energy, lab- oratory measurement, 6824. reaction of nitrogen atoms with ethylene, 3741.

spherulitic crystallization with chain folds in polychlorotrifluoroethylene, 4878. temperature curve, isothermal crystallization, poly- pentene-1, measurement of a maximum, 5465. thermal degradation of organic polymers, 4879. vaporization in fractional distillation, 4418. vaporization of refractory substances, 3741 A; 4261. Rates, adsorption and desorption of polystyrene on chrome surface, J 68A4-287, 391 (1964).

corrosion, ferrous alloys, measured by polarization techniques (Fe, Cr and Fe-Cr-Si), 5268. formation of He2 + and Ne2+, reaction, 5629. measured, for oxygen and nitrogen ion-molecule

reactions of atmospheric importance, including 0+N2 NO+ +N, 9020.

reaction, and mobilities of ions in helium, 6870.

relative, two carbon positions and derived heats of formation of several alkyl radicals: hydrogen atom addition to olefins, 6785. very low frequency band using atmospherics, day- time attenuation, J 64D-68, 349 (1960). Rating, method for refrigerated trailer bodies hauling

perishable food, 3394; 3395.

scale method for evaluating research positions, 3396. Ratings, flare importance—some hope for improvement,

6070.

Ratio, abundance, atomic weight of chlorine, 4461. cosmic noise, absorption during polar cap absorption events, day-to-night, 5743. frequency, optical harmonics, 4645. measuring systems, complex insertion, precision detector, 6305. negative ion and electron densities in the lowest

ionosphere, height distribution, 6253. output signal noise, frequency modulation and

pulse code modulation frequency shift system,

error rate in multiple frequency shift system,

6446.

positive to negative surface ionization of an alkali halide, the determination of work function,

9069. pyrometer, 4423. 667
sets, universal, some modifications in methods of

calibration, TN220.

time tables, 5087. Rationalization; (of electrical units), J 66C2-94, 137

(1962).

Ratios, Hawaiian lavas, Sr87Sreo

, 6389. means, bounds, J 66B4-84, 169 (1962). minerals, Rb6 /Rb7 survey, 5718. nomographs for computing real, imaginary and absolute values of vector, 6889. required signal-to-noise, carrier power and band- width to achieve a given performance for multichannel radio communication systems, 5641. transformer, precision measurement, 3857.

voltage, inductive voltage dividers, accurate measurement, 6427. Ray-tracing, formulas for uniaxial crystals, 4880. program, study of "valley problem," 4954. Rayleigh and Lorentz gas, hard sphere, relaxation, 5540; 6259. Rayleigh distribution and its generalizations, J 68D9-

392, 927 (1964).

distributions, some problems, J 66D2-184, 167

(1962).

distributions, statistical inference, J 68D9-400, 1005

(1964). waves across an ocean floor with two surface layers, transmission, 4381a. Rayleigh-Ritz approximation of eigenvectors, error bounds, J 64B4-37, 217 (1960). Rayleigh's non-linear vibration equation, 4197A.

Rays, (gamma) or neutrons, image source technique

for calculating reflection, 6593. paraxial, method for localized variation of the paths of two, 5141.

radio, method of predicting the atmospheric bending, J 64D5-84, 487 (1960).

solar cosmic, radio techniques, 4989. Razor, century-old, 3920. Rb+

, K

+

, and Na+, on rhenium, kinetics of desorption,

5436. Rb5 /Rb7 ratios in minerals, 5718. RbMnFa, nuclear magnetic resonance, 6897. R-centroids and Franck-Condon factors, for some bands

of the CO fourth positive system, 3549. Reaction, acid-catalyzed, kinetics of the, of acetal in water-acetone solvents at 15, 25 and 35°, 5437. between copper and solid oxygen condensed at very low temperatures from a gas discharge, 3742. boron trichloride, with trichloride-boron trifluoride exchange processes, 5344. calcium carbide, determining moisture in solid materials, 6690. calorimetry and combustion of several compounds

of interest in a light element program, 6640. carbon monoxide with atomic oxygen, 811A.

CI atoms with CO, matrix-isolation study, 6851. cross section, energy dependence of the D-D, J

68A6-317, 675 (1964). deuterated polystyrenes with hydrogen and deu- terium atoms, 6335. experimental, cross sections with various relations obtained from SUn, comparison, 5961. F atoms with CO, matrix-isolation study, 6852. ground state oxygen atoms with condensed olefins, 6336. hardened portland cement paste with carbon di- oxide, J 66A6-182, 473 (1962). high temperature between nickel and chlorine, mass

spectrometric investigation, 6189. hydrogen atoms with solid oxygen at 20° K, 3291. hydrogen atoms with solid propene at low temperatures, 3858. hydrogen, with carbon and nickel evaporated films, 6121. C"-labeled cyanide, determination of reducing end- groups by, 6686.

mechanism, ionic, in the radiolysis of methane,

effect of additives, 5307; 6005. methyl radicals with dimethylmercury, 6472. N2+6—NO+N at thermal energy, laboratory measurement of the rate, 6823. nitrogen atoms with ethylene, mass spectrometric

study, 6844. NO + N, and some heterogeneous reactions observed

in the ion source of mass spectrometer, rate, J 65A5-121, 411 (1961). 0

+ +02—>02+ +0 at thermal energy, laboratory measurement of the rate, 6824. oxygen with unkilned bone char at low temperatures, 4882. rates and mobilities of ions in helium, 6870. rates for the formation of, He?+ and Nes +, 5629. several aminopyrimidines with formaldehyde, J

66A1-141, 65 (1962).

sulfur, hydrogen sulfide, and accelerators with pro- pylene and butadiene, J 65A1-88, 79 (1961).

surface, mass spectrometric investigation of nickel- bromine, 6190. surface, mass spectrometric investigation of

yttrium-chlorine, 6191. Reactions, aldol, synthesis of high ketoses, 6417. atomic flame, involving N atoms, H atoms, and

ozone, 5206. atmosphere during fatigue of metals, effi :t 6009A.

atmospheric importance, including 0

+ -f- NO+ +N,

some measured rates for oxygen ai nitrogen

ion-molecule, 9020. chemical, 4438.

classical model for the study of is ipe effects in energy exchange and particle c hange, 5865.

color, with phenylendiamines, mea; rement of photochemical degradation in certain plastics, 6199.

(d, p) of heavy nuclei, form and angular distribution of proton groups at about Q-0 Mev in the proton spectra, 5364. disproportionation-combination, of alkyl radicals and hydrogen atoms at low temperatures, 5996. homogeneous, tables of chemical kinetics, Suppl. 2

to C510; Mono.34; Mono.34, Vol.2. hot methyl radicals with added organic compounds.

Gas-phase photolysis of methyl iodide, 6099. PL-transfer, in the gas-phase radiolysis of hydrocarbons, 6776. induced in scintillators, neutron detection, 3661. ion-molecule, TN291.

methyl radicals, in the solid, liquid, and gas-phase

photolysis of dimethylmercury, 5787. methyl radicals with aromatic compounds, 5788;

5789. n-perfluoropentadiene-1,4 at high temperature and

pressure, radiation-induced polymerization,

8970. neutral excited cyclohexane molecular of the parent

cyclohexane ion, modes of decomposition of: gas-phase photolysis of cyclohexane in the far

ultraviolet, 6770. O atoms with NO and N02 , mass spectrometric

study, 6195. oxygen atom with condensed olefins, 6278; 6279. parent cyclohexane ion, modes of decomposition of the neutral excited cyclohexane molecule, 9080. phenylenediamines, color, measurement of photo- chemical degradation in certain plastics, 6199. photonuclear, 8941. polyfluorobenzenes with nucleophilic reagents, J 67A5-237, 481 (1963).

positive ion-neutral, in the ionosphere, 8947. proton-transfer, between H3 + and saturated hydrocarbons, 6319. proton-transfer, equilibrium constants, 5339. 668
proton transfer, involving sec-propyl ions, hydride,

6120. proton transfer, occurring in the gas-phase radiolysis, 6320.

shell model treatment of nuclear, 9005. sulfur and oxygen in the manganous-sulfate-bath

calibration of neutron sources, the correction factor for fast neutron, 9063. Reactive, and inert matrices, infrared studies of photolysis of HN3 ; the infrared spectrum of NH,

6136. loading of arbitrarily illuminated cylinders to mini- mize microwave backscatter, J 69D11-581, 1481

(1965). Reactivity and ionization constants of isomers of eugenol, J 68A6-309, 619 (1964). Reactor, black void, 3816.

facility, National Bureau of Standards, 5025. grade Be, Mo, and W, 3617. systems, cryogenic fluid, two-phase critical studies, 5981. Reading, mechanical, characters and recognition, 4758. problems, automatic character, TN112.

Reagent chemicals, 4263.

Real, fluids using equations of state and specific heats, functions for the calculation of entyalpy, en- tropy and internal energy, 6093.

gas, suppression at high temperature of effects due

to statistics in the second virial coefficient, 9051. imaginary and absolute value of vector ratios, nomographs for computing, 6889. metals, comments on surface characterization, 6642. metric, complex Lorentz group, 5963. representations of coordinate rotations, 3742A.

two-dimensional representations of the modular

group and related groups, 8981.

Realistic, diatomic potential function, 4439. estimates of error, 4884. evaluation of the precision and accuracy of instru- ment calibration systems, J 67C2-128, 161

(1963) ; M248, p. 63. measurement of precision and accuracy, 4810.

perspective, radiation hazards, 4872. Reality of matrix eigenvalues, 4555.

Realization, and use of the international practical temperature scale of 1948, 9094. semi-multipliers as multipliers, 8982. Realizing the distance matrix of a graph, J 70B2-176,

153 (1966). Realm, ultraviolet, spectroscopy, 6486. Rearrangement kinetics of the liquid-liquid immiscible microphases in alkali borosilicate melts, 8983. Rearrangements, intramolecular, V. formation of ethylene in the photolysis of ethyl acetate from

4 to 500 °K, 5424. Reasoning foundations of medical diagnosis, 3292. Rebuttal of "a lunar theory reasserted," J 67D1-237, 1 (1963).

Recalibration, NBS, carbon-14 standard by Geiger- Muller and proportional gas counting, 3743. glass standards of spectral transmittance, J 67A6-

243, 577 (1963) ; 6337. standard thermal neutron flux, 3940.

tritiated water standard, 5884. Receiver, noise factor, 8984. recording, extremely narrow bandwidth TN107

(PB161608).

Receiving tubes, tabulation of data, H83.

Recent, advances in cryogenic engineering, 5630. advances in infrared-spectroscopy, 4264. Arecibo observations of Mars and Jupiter, J 69D12-

613, 1628 (1965). Arecibo observations of Mercury and Venus, J

69D12-612, 1627 (1965).

contributions to the theory of electrolyte solubility, 526A.

experiments on liquid helium vapor pressure meas- urements from 2° to 4°K, 4885. progresses in cryogenic engineering, 5632. radar observations of new forms of ionosphere

scatter, 4265. research on bituminous materials, summary of symposium, 6410. sporadic E experimental work in the United States, 4886. studies of monochromatic 6300 arcs, 3744A.

studies on rutile (Ti02 ), 4266. transport calculations for electrons and bremsstrahlung, 9000. work with compensated internal gas counters for the standardization of gaseous radionuclides,

3745. world-wide developments, 6853. Recent developments, high temperature thermocouples,

5647. neutron source standardization, 5631. noble metal thermocouples, 5677. space research, 3744. using elastomers for static cryogenic seals, 6338. Reception, ELF, at Kingston, R.I., Schumann reson- ances of earth-ionosphere cavity, J 66D3-199,

313 (1962). skywave signals near a coastline, J 67D3-266, 325

(1963).

transequatorial, very-low-frequency transmission,

6510. (Reciprocal resistivity), conductivity, measurements

and DC dielectric conductance (reciprocal re- sistance), 6697. Reciprocity or equality of the waveguide or transmission line characteristic impedances, relation- ships between different kinds of network pa- rameters not assuming, 6343. Recognition, clauses in machine translation of lan- guages, 4266A.

completely mixed games, J 67B1-90, 23 (1963).

optical character, 4816. pattern, J 64D6-96, 676 (1960). Recombination, bromine and chlorine atoms on Pyrex, mass spectrometric study, 5460.

dissociative, helium afterglows, 6707. Recommended, materials and practices for use with

cryogenic propellants, 8985. standard resistor-noise test system, 3397. unit prefixes; defined values and conversion fac- tors; general physical constants, M253.

Record, abbreviated calendar, 5899. calendar, International Geophysical cooperation,

5222.

films, processed photographic, for aging blemishes,

inspection, H96.

Recording, external, arterial pulse waves improved

transducer, 5401. magnetic tape, and reproducing of atmospheric

noise with a wide dynamic range, 6187. media, magnetic, surfaces of, electron microscopy

studies, 5329. performance of a tape from its magnetic properties, 3500. receiver with extremely narrow bandwidth, TN107

(PB161608).

tape, iron oxide, experimental and theoretical in- vestigation of the magnetic properties, 3539.

tape, magnetic, 4452.

tape, magnetic, wear, solubility of the binder, 5810. Recordings of satellite radio signals, analysis of polari- zation rotation, 3678A.

Recrystallization, anodic alumina films, 8986. D-mannose-1-6 phenylhydrazone, 4721. 669
fractional, of alpha-D-glucose-l-t, absence of an

isotope effect, 3956. melting (contraction), fibrous proteins in non- aqueous media, 5773. Rectangular, bar-shaped semiconductor samples, calculations for comparing two-point and four-point probe resistivity measurements, TN241.

basins, energy dissipation in standing waves, 3202. semiconductor bar for use with four-point probe measurements, potential distribution, 6301.

source, power-series buildup factor formulation,

application, J 67C4-140, 291 (1963).

universe, distribution to students in samples, 5998.

Rectifiers, current-limited, 4560. superconducting, 4330. Rectilinear motion, micro-adjuster, TN253, p. 2. Recurrence algorithm, error analysis of Miller's, 6047. Recursive functions, J 68B3-122, 99 (1964). Red, and green coronal lines, 4644.

lines, excitation, atomic oxygen, electric fields in the ionosphere, 5317. Redefinition of the second and the velocity of light, 5539; 5790. Redetermination, chromium and nickel solvuses in the chromium-nickel system, 4267.

optical properties of calcium fluoride, 5160. Reduced, form of normal vision, relation between normal

trichromatic vision and dichromatic vision, 6342.

rutile, electron energy levels and their relationship

to lattice defects, 5327. Reducing, between-laboratory variability, TAPPI stand- ard T414 m-49, internal tearing resistance of paper, effectiveness of a reference material,

5202. end-groups by reaction with C"-labeled cyanide,

6686. sugar methods, 3746. Reduction, aldonic lactones, TN274.

crystallagraphic point groups to subgroups by homogeneous stress, J 69A4-351, 309 (1965). data for piston gage pressure measurements,

Mono.65. formula for partitioned matrices, J 64B3-33, 171

(1960). space groups to subgroups by homogeneous strain, J 67A5-229, 395 (1963). Re-examination of the polymorphism of dicalcium

silicate, 4268. ReF6 , spectrum, 3784. Reference buffer solutions for pH measurements in 50% methanol. Dissociation constants of

acetic acid and dihydrogen phosphate ion from

10 to 40% 8987.

cavities, shallow, high-temperature emittance measurements, 5427. data program, National standard, TN194; 6220. determination of uranium, high-precision coulo- metric titrations, 6778.

diodes, Zener, and their measurements, operating

characteristics, 6467.

electrodes, observations, fused salt systems, 5514;

5526.

file, aspects of the NBS instrumentation literature, 5929.

file, personal, 5104. laboratory inspection service for concrete testing

laboratories, cement and concrete, 6433. material, effectiveness of a, in reducing the be- tween-laboratory variability of TAPPI, stand- ard T414 m-49, internal tearing resistance of paper, 5202. material program, APPA TAPPI, 5202; 5923.

materials, organic, TN274.

porcelain, electrode conductive to sodium ions for use in molten salt systems, 3123. standards, national, for high frequency impedance,

5042. Reference materials, standard: accuracy of solution X-ray spectrometric analysis

of copper-base alloys, M260-5.

analysis of uranium concentrates at the National Bureau of Standards, M260-8.

catalog and price list of standard materials issued by the National Bureau of Standards, M260.

half lives of materials used in the preparation of standard reference materials of nineteen radioactive nuclides issued by the National Bureau

of Standards, M260-9. homogeneity characterization of NBS spectrometric standards II: cartridge brass and low-alloy

steel, M260-10.

metallographic characterization of an NBS spec- trometric low-alloy steel standard, M260-3. methods for the chemical analysis of NBS copper- base spectrochemical standards, M260-7. methods for the chemical analysis of white cast

iron standards, M260-6.

preparation of NBS copper-base spectrochemical

standards, M260-2.

preparation of NBS white cast iron spectrochemical

standards, M260-1.

sources of information, M260-4.

Reference tables, 40 percent iridium-60 percent rhodium

versus iridium thermocouples, J 66C1-81, 1 (1962) ; 4887. palladium vs. platinum-15% iridium thermocouple,

4888.

platinel II thermocouple, J 68C4-174, 263 (1964). Pt-30 percent Rh versus Pt-6 percent Rh thermocouple, J 70C2-222, 89 (1966). thermocouples of iridium-rhodium alloys versus

iridium, J 68C1-151, 41 (1964). References to contemporary papers on acoustics, 4269.

Refiner, zone, temperature control, 9149.

Refining, cane sugar. II. Decolorization with adsorbents, 5227. measurements by capacitance techniques, 4270. Reflectance, diffuse spectral, effect of surface texture, 6715; 6716.

Reflected, characteristics of soil and vegetated surfaces, emitted radiation, 6630. emittance, physical standards, 4839.

ultraviolet, vacuum, of evaporated aluminum before and during oxidation, 5542. Reflected coastline, nature of the electromagnetic field, 6881. shock wave in a transverse magnetic field, propagation, 6316. Reflecting specimens, diffusely, avoiding errors from

stray radiation in measuring spectral emittance

of, 6610.

Reflection, coefficient versus return loss (L„=20 logTM

1 lri), table of magnitude, TN72 (PB161573).

coefficient, voltage, magnitude, 4564. electromagnetic waves from a lossy magnetoplasma,

J 68D1-321, 95 (1964). electromagnetic waves from a stratified semi-infinite medium, J 68D11-422, 1215 (1964). electromagnetic waves from thin ionized layers, J

66D1-175, 73 (1962). gamma rays or neutrons, image source technique

for calculating, 6593. ground, line-of-sight phase systems, analysis of the

effects, 6589.

logistics in electronic computer design, 3858A.

lunar, J 66D3-190, 227 (1962). measurements in coaxial systems, 4496. 670
mechanism for sporadic E, 4889. meteor trails, radio propagation, 6329. process at the lower ionosphere, radio pulse propagation, J 67D5-281, 481 (1963). radio waves from undulating tropospheric layers, J 67D6-294, 609 (1963).

role of process in radio wave propagation, J 66D3-

195, 273 (1962). transmission formulae, composition, J 67D1-244, 65

(1963). transmission of radio waves at a continuously

stratified plasma with arbitrary magnetic in- duction, J 66D1-176, 81 (1962). sharply bounded ionosphere for VLF propagation

perpendicular to the magnetic meridian, J

65D5-151, 455 (1961). VHF, tropospheric layer, influence of refractive index profile, 6129. VLF radio waves from an inhomogeneous iono- sphere. Part I. Exponentially varying iso- tropic model, J 67D3-270, 361 (1963). VLF radio waves from an inhomogeneous iono- sphere. Part II. Perturbed exponential

model, J 67D5-283, 519 (1963). VLF radio waves from an inhomogeneous iono- sphere. Part III. Exponential model with

hyperbolic transition, J 67D6-303, 747 (1963). waves in inhomogeneous layers with asymmetric

profiles, a note concerning, J 69D5-505, 701

(1965).

Reflections, losses of waveguide joints and connectors using microwave reflectometer techniques, measurement, 3629. radar, from a rough moon, J 66D3-189, 215 (1962). radar, from the moon at 425 Mc/s, J 67D2-248, 107

(1963).

radio, from the topside of the ionosphere, a rocket experiment, 5162. radio wave, at a continuously stratified plasma

with collisions proportional to energy and

arbitrary magnetic induction, 5623. Reflectometer, semi-automatic technique for tuning, 6559A.

techniques, microwave, 3256. techniques to accurate reflection measurements in coaxial systems, 4496.

Reflector on the moon, optical radar, 8927.

Reflectors, near, radiation impedance of a source, 5613. Refraction, atmospheric, errors of baseline-type radio tracking systems and methods of their cor- rection, systematic, 6418. attenuation of radio waves, tropospheric, 6515. correction of optical distance measurements for fluctuating atmospheric index, 6660. dispersion of synthetic sapphire, 4890.

effects, comparison of observed atmospheric radio, with values predicted through the use of sur- face weather observations, 5250.

effects of large-scale ionospheric irregularities ob- served at Boulder, Colorado, 4271.

errors, atmospheric, in radio height finding, J 67D2-250, 139 (1963). exponential atmosphere, formula for radio ray, J 65D2-117, 181 (1961). means for study of plasma configurations, use of index, 6521. radio waves, Mono.92.

radio waves at low angles within various air masses, 3747. tropospheric and refractive index models, Mono.92.

tropospheric, earth-space links, 6719. Refractive, oxides, metals, metalloids, electrophoretic

deposition, 3526. properties of barium fluoride, 6340.

radio, index for the United States and the world,

climatic charts and data, Mono.22.

radio, index of air, 5038. Refractive index, absorbing films by ellipsometry, M256,

p. 61. diagrams, on the use of, for source-excited ani- sotropic regions. J 69D2-450, 155 (1965).

dispersion of liquid hydrogen, TN323.

ground level as a radio-meteorological parameter, comments on the limits to the utilization, 3476A.

increment of polystyrene in solution, 3327. ionosphere, angular dependence, J 69D3-476, 395

(1965). measurements, 4259; 4272.

profile characteristics and monthly median trans- mission loss, correlation, J 65D1-104, 67 (1961).

profile in VHF reflection from a tropospheric layer, 6129.

radio, TN99 (PB161600).

radio, near the ground, turbulent characteristics, 5807. structure of the lower atmosphere on both synoptic and climatic scales, Mono.92.

structure of the troposphere from electromagnetic

scattering experiments, on inferring, J 69D6-

521, 881 (1965). thickness of films of biological polymers, M256,

p. 297. very thin films, measurement of the thickness, and

the optical properties of surfaces by ellip- sometry, J 67A4-227, 363 (1963). Young's modulus as the result of successive heat

treatment, 5945. Refractive indices, benzene, carbon tetrachloride, and

water, effect of pressure and temperature, J 67A2-203, 163 (1963).

densities of aqueous solutions of invert sugar, Mono.64.

gases at 47.7 gigahertz, absolute determination, 6576A. some solids, effect of hydrostatic pressure, J 69A4-

352, 325 (1965). transmittance of several optical glasses in the

infrared, 3293.

Refractivities of the rare earth oxides, 6341.

Refractivity, molecular in radio meteorology, 3140. Refractometer, cavities, microwave, atmospheric variations, 6475. free-balloon borne meteorological, J 65D2-112, 149

(1961). microwave, absolute, 4464. microwave, measurement of moisture boundary

layers and leaf transpiration, 5466.

radio, to measure water vapor turbulence, 9101. system, noise tests of an airborne microwave, 6888. Refractometry, precision, small lens-shaped objects, 8953.

radio, TN66 (PB161567).

radio, potential for humidity studies, 8973. Refractor, 26-inch, at Leander McCormick Observatory,

interferometer test, 6146. Refractory, metals, coatings, formed by anodic treat- ment and by vapor deposition, 4000. substances, rate of vaporization, 3741A; 4261. Refrigerants 12 and 11, hydrogen, nitrogen, and oxygen, choking two-phase flow literature summary

and idealized design solutions, TN179.

Refrigerated, structures, heat sink methods for measuring the cooling loads, 3229.

trailer bodies hauling perishable food, 3394; 3395.

trailers, rating the cooling load, 3570.

vehicles by free evaporation of liquid nitrogen, measuring the cooling load, 6859. 611
vehicles, stationary, cooling load, laboratory study

of effect of solar radiation, 5439A.

Refrigeration, cryogenic, systems, Joule-Thomson process, TN227.

frozen food transport, 5891. hydrogen, system, intermediate size automatically

controlled, 3425A.

system incorporating a low-capacity, high-speed, gas-bearing-supported expansion turbine, 5161. system, liquid hydrogen, closed circuit, 3469. system, pulsed, cryogenic magnet application, 6558. systems, cryogenic, miniature helium turbo-ex- pander, 5143.

trailers, chilled air distribution, 4521. Refrigerator, He3

, producing temperature down to %°K,

continuously operating, 4015.

ideal, efficiency, 4996. Regime, partial fludity, hypervelocity cratering data, and a crater depth model, 5396. Region, D, after the high-altitude nuclear explosion of July 9, 1962, long-lived effects, 6182. formation of an electron depleted, in the ionosphere by chemical releases, 6079. ionosphere by chemical releases, formation of an

electron depleted, 6078. lower F, some results of a new method for obtain- ing ionospheric N(h) profiles with bearing on

the structure, 6380. 150 km in the vicinity of the magnetic equator during daylight hours, evidence of a stratified echoing, 6055.

optical constants of iron in the visible, 8923. saturation, electrolytic conductance of ammonium

dihydrogen phosphate solutions, 5324. vacuum ultraviolet, intense resonance line sources

for photochemical work, 6141. Regions, conjugate, at high magnetic latitude, observations of short-duration cosmic noise absorption, 6375.

coronal-line emission, 5053. E and Fl, model of the atmosphere and ionosphere,

5144.

oscillation of the ionosphere, ionospheric absorption,

6162.

relation of solar active, central meridian passage

to ionospheric disturbance, 5635. Regression, analysis of variance, estimation of weight- ing factors in linear, 6051.

coefficient, tests, when errors are correlated, 3810. Regular oscillations near 1 c/s observed at middle and

low latitudes, J 69D8-542, 1089 (1965). Regulated power supply for instruments, 3748. Regulation of ionization gauge emission current to better than 0.05%, 5633. Regulator, dc power, 3425. Reinforced, masonry, building code requirements, H74.

polymer, effect of particle size and shape distribution in, 6442. Related, groups, real two-dimensional representations

of the modular group, 8981.

isotope effects from 0 to 50 deg., dissociation of

acetic acid-da in aqueous solution, 6705. oxide semiconductors, electronic energy bands in SrTi03 , 6033. thermodynamic quantities from 0 to 55 deg., second

acid dissociation of N, N-Di-(2-hydroxyethyl)-

glycine, 6359. transmission-line antennas, experimental study of inverted L-, T-, J 65D5-150, 449 (1961).

Relating, examples, simplex method, 6058. volume and pressure in the study of transitions in polymers, utility of Tait equation, 6522. Relation between, absorption spectra and the chemical

constitution of dyes. XXX. Photoisomerization of the azo dyes in aqueous solution, 3346.

auroral radio absorption and very low frequency

emissions, 8919. confidence intervals and tests of significance—

a

teaching aid, 3859. degree of crystallinity and morphology, dielectric and mechanical relaxation of crystalline poly- mers, 6202. normal trichromatic vision and dichromatic vision representing a reduced form of normal vision, 6342. permanent and the determinant, 4208. refractive index and Young's modulus as the result of successive heat treatment, changes, 5945. two-dimensional Fourier integrals and series of Hankel transforms, J 69B3-149, 173 (1965). VLF propagation and D-layer characteristics, 6473. emittance to other optical properties, J 67C3-132, 217 (1963). hm »xF2 to m(3000) F2 and hpF2, 3860. Lewis, calculation of the temperature of flat-plate wet surface under adiabetic conditions, 6619. NBS time scales, 9088. partial (110) pole figures, thickness and microstructure of electrodeposited copper, 5634.

solar active regions at central meridian passage to ionospheric disturbance, 5635.

solar active regions at general meridian passage to ionospheric disturbance, 4273. stacking fault energy to segration at stacking

faults and to the occurrence of phase boundaries in F.C.C. binary alloys, 8988. turbulence theory to ionospheric scatter propagation experiments, J 64D4-62, 301 (1960).

Relations, approximating symmetric relations by equivalence, 5926.

dravite, stability, 5688.

elastic stress-strain, in perfect elastic fluids, 6722. empirical, energy levels of atoms and ions, 6736. heats of transport, status of linear, 9041. obtained from SU3 , comparison of experimental

reaction cross sections, 5961. pressure-density-temperature, of freezing liquid parahydrogen to 350 atmospheres, 5590. symmetric, equivalence relations, 5926. Relationship, a.c. resonant probes to resonant scattering, 9193. between intensity of carbon arc and asphalt oxidation, 6474. between red auroral arcs and ionospheric recombination, J 65D2-110, 129 (1961). between simultaneous geomagnetic and ionospheric

oscillations, J 68D3-351, 339 (1964). thermal noise emission spectrum of the atmosphere, width of the microwave lines of oxygen, 9039.

velocity-depth, microelectrophoresis cell for as- phaltenes in nitromethane, 5845. Relationships, between different kinds of network parameters, not assuming reciprocity or equality of the waveguide or transmission line characteristic impedances, 6343. low-height ionosonde echoes to auroral-zone ab- sorption and VHF forward scatter, 4374. yarns, subjected to rapid impact loading, stressstrain, 3795; 4646; 4945; 5706; 9047. Relative acidic strengths of the isomeric dinitrophenols

in benzene and water, 4536. convergence of the solution of a doubly infinite set of equations, J 67D2-260, 245 (1963).

corrections, calculable, inductive voltage dividers, 5405. humidity and temperature in rubber laboratory

of NBS, 6659. humidity and temperature, influence on the photo- graphic response to Co00 gamma radiation, J 65C3-72, 203 (1961). 672
humidity, response of microchemical balances to changes, J 65C4-47, 281 (1960).

intensities for the arc spectra of seventy elements,

4274.

intensities of fluorescence and phosphorescence in biacetyl vapor, 2379A.

oscillator strengths of some O H and O III lines from measurements on shock-heated plasmas,

6344. power transmission characteristics of the ear and

the skull from hearing threshold data, 4891. rates at the two carbon positions and derived heats

of formation of several alkyl radicals: hydro- gen atom addition to olefins, 6785.

roles of free volume and activation energy in the

viscosity liquids, 8920. signs of nuclear spin couplings in 1 H

U B10 F2, 8988A.

signs of proton spin-spin coupling constants, 4892.

Relativistic damping effects and electromagnetic wave

propagation in a uniformly magnetized elec- tron-positron gas, 6727. electron-positron gas, quantized, electromagnetic

properties, 6726.

electron precipitation into the mesosphere at sub- auroral latitudes, 8989.

electrons, k-ionization cross sections, 6172. matrix elements and the velocity dependence of nuclear potentials, 4275. plasmas, transmission and reflection of electromagnetic waves, J 69D5-509, 735 (1965). SU(6), baryon resonances and meson, 6861. Relaxation, birefringence in amorphous solids, effect of hydrostatic pressure, J 65A4-112, 283

(1961).

dielectric and mechanical, crystalline polymers in relation to degree of crystallinity and morphology, 6202. ferromagnetic resonance, wide spin wave coverage by ellipsoids, 6068. formulae and experiments, discussion of spin-spin, 5995. group of weakly coupled systems, 9112. hard sphere, Rayleigh and Lorentz gas, 5540; 6259. high temperature dipole lattice, dielectric, 5294.

isolated ensemble of harmonic oscillators, 3749.

Liouville representation of quantum mechanics

with application, 6179. Lorentz gas with a repulsive r~

s force law, 6345.

process, Markovian, exact conditions for the preser- vation of a canonical distribution, 6056. modes for trapped crystal point defects, J 67A4-217,

291 (1963). modes of trapped crystal point defects, the three- neighbor shells model in NaCl, J 68A5-290,

425 (1964). moments derived from a master equation, 4950. nonequilibrium distributions, 4893. nuclear magnetic, impurity nucleus in dilute ferro- magnetic alloys, 6232.

oscillator using a gated beam tube, 1847A.

pressure broadening as a prototype, 5589.

processes, canonically invariant, nonequilibrium

therodynamics, 6224. processes in multistate systems, 3294.

radiolytic stress, ethylene-propylene copolymer,

8978. spectrum representation of mechanical response

function derivation, J 66A4-170, 349 (1962).

spin-lattice, effects of finite lattice heat capacity,

6718.

stress, 7-irradiated fluorocarbon elastromers, 9045.

stress, measurement of random chain scission, 6257.

stress, study, with finite strain, 5167. ThO- containing CaO, mechanical and electrical, 5471.

time, size-dependent spin lattice, 5659. time, spin-lattice, cupric sulfate pentahydrate, 6796. time, spin lattice, paramagnetic dispersions, 5798. times of some paramagnetic dispersions, 4375.

times, technique for spin-lattice, 9056.

vibrational, approach to simple expontial decay,

6606. volume, As203 in the glass transformation, 9133. Relaxations, volume, amorphous polymers, 9134. Relay link, tropospheric, phase instability, 5560. Release, strain, complete dentures, 5703.

strain, silver alloy particles, dimensional changes

of dental amalgam, 6694. Released, chemical, ionosphere, ionosonde studies, 6160. Releases, formation electron depleted region in the ion- osphere by chemical, 6078; 6079.

Reliability, atmospheric radio noise predictions, J 65D6-

160, 565 (1961). communication, prediction, noise in VLF to HF

bands, 5507. complex systems, confidence limits, 5257.

function, equipment, J 67B4-104, 223 (1963). system in which spare parts deteriorate in storage, J 66B4-81, 157 (1962).

theory, survey of some mathematical models, 5169.

Reliners, denture—direct, hard, self-curing resin, 7174. Remanent polarization, 4653. Remarks, certain generalized Dedekind sums, 6378. coincidence experiments with visible light, 5636. concerning nonreciprocity in radio propagation,

6377. cosmic-ray cut-off rigidities and the earth's magnetic field, 8990.

hypo-elasticity, J 67B3-98, 141 (1963). measurable sets and functions, J 70B1-169, 83

(1966). microgrammers, 6379. mode and ray theories of VLF radio propagation, J 68D1-319, 79 (1964). modulation, 5637. use of statistics in radar astronomy, J 68D7-382, 849 (1964). Watson transformation and mode theory, J 68D1-

317, 59 (1964). Remote, phase control of station WWV, 4894. two, atomic time scales, synchronization, 5719. Removal, gold anodes in acidic oxalate solutions and

film formation, optical investigations, 6272. organic anions by bone char, 3295. Renewal process, games associated with, 4666. Laguerre expansions for successive generations, J

66B4-83, 165 (1962). Rennie's inequality, generalization, J 68B2-117, 59

(1964). Replica copy retrieval, rapid selector as currently used

for information search, 5786. Reply, criticisms concerning Ireland contained in article "Basic Research in Europe," 2730A.

H. F. Bates' Comments on 'Measurement of the Phase Velocity of VLF Propagation in the Earth Ionosphere Waveguide' by F. K. Steele and C. J. Chilton, J 69D8-552, 1196 (1965).

J. M. Bullen and G. A. M. King's comments on a paper 'Auroral sporadic-E ionization,' J 67D4-

273, 385 (1963). "Remarks by Donald H. Menzel With Reference to Bailey's Comments on Solar Electric Fields," J

68D12-437, 1325 (1964). Report, acoustics research survey committee, 8992.

circuit theory, J 64D6-96, 687 (1960). committee E-2, on emission spectroscopy, 5638. computer technology outside the United States, 3941. fundamental spectroscopic data, 6772. Geophysical Monograph Board, 4895. International Commission on radiological units and

measurements (ICRU) 1959, H78. 673
investigation of slow-flow meters for fuel oil dis- tribution systems, TN196.

measurements, J 69D12-592, 1563 (1965). NBS spectroscopy, 3430A; 5919; 6602. preliminary, studies at NBS of the platinum-6%

rhodium vs. platinum-30% rhodium thermocouple, 5708. progress on aerosol packaged products, 6313. referee on sugar and sugar products, 4276. restoration of complete dentures inadvertently warped by the patient, 8997. Salzburg conference, radiochemical methods of

analysis, 8976. standard samples, 5639. standardization of pH and related terminology,

3751. subcommittee D-atomic spectra, 8991. sugars and sugar products, 3750; 5640. summary, activities of spacewarn network, 5716.

technical investigation of odometers, TN195.

U. S. Commission 1, URSI radio measurement

methods and standards, J 64D6-96, 591 (1960). U. S. Commission 2, URSI tropospheric radio propagation, J 64D6-96, 607 (1960). U. S. Commission 3, URSI ionospheric radio propagation, J 64D6-96, 629 (1960). U. S. Commission 4, URSI radio noise of terrestrial

origin, J 64D6-96, 637 (1960). U. S. Commission 5, URSI radio astronomy, J 64D6-96, 655 (1960). U. S. Commission 6, URSI radio waves and cir- cuits, J 64D6-96, 671 (1960). U. S. Commission 7, URSI radio electronics, J

64D6-96, 751 (1960). U. S. standards activity, 3942. Reporting and measuring physical properties of optical materials, proposed standard, 8964. Representation, diurnal and geographic variations of ionospheric data by numerical methods, J

66D4-205, 419 (1962); 5040; 8993. high-pressure vapour-liquid equilibia, thermodynamic, 5817.

Liouville, quantum mechanics with application to relaxation, 6179. mathematical, and physical entities, J 65B4-60, 227

(1961). Representations, real two-dimensional, the modular

group and related groups, 8981. transformation, and calculations—-chemical struc- tures as information, 6633. Representing a reduced form of normal vision, relation between normal trichromatic vision and dichro- matic vision, 6342. Reproducibilities of carbon and germanium thermometers at 4.2°K, 4277. Reproducibility, carbon resistance and helium vapor

pressure measurements, 3861. international standard of light, 4897. Reproducing and magnetic tape recording of atmospheric noise with a side dynamic range, 6187. Reproduction, abridged color, 4460. Repulsion of energy levels in complex atomic spectra, 4278. Repulsive, interactions at low temperature, binary mixtures of dilute bose gases, 5213.

r

s force law, relaxation of a Lorentz gas, 6345. Required, signal-to-noise ratios, carrier power and

bandwidth to achieve a given performance for multichannel radio communication systems,

5641.

signal-to-noise ratios, RF signal power, and band- width for multichannel radio communications

systems, TN100.

Requirement for a solar observatory, within the NBS,

5642. Requirements for, liquid, the cool-down of cryogenic equipment, 5450.

Research and development looks to the future, measurement, 6855. Research, a summary of VLF and ELF propagation,

J 64D6-96, 647 (1960).

acoustics, 8992. airglow, 5181. American Society for Testing and Materials, 4899. applicable to long-distance location and direction- finding problems, at NBS, J 65D3-124, 233

(1961).

architecture, 8994. archival microfilm, TN261.

atmospheric, 4500.

basic, government laboratories, 3151A.

bituminous materials, 6410. chemical, crystal growth, 6671. cooperative dental, between the Federal Govern- ment and the American Dental Association at NBS, 6373.

crystal growth and characterization at the National Bureau of Standards, TN174; TN197; TN236; TN251; TN260.

dental, 5860. electromagnetic cross sections for electron and nuclear, 6023.

electronic fuze, 441A.

exploratory, demineralization, 3540A.

fire, at NBS, 3211.

frontier, 3347. frozen food transport refrigeration, 5891.

glass at NBS, 3221.

industrial significance, 5008. JU A, annual observatory report, 5200. leads to more practical codes, 1130A.

light metals in the Metallurgy Division, NBS, 4279. millimeter wave, at NBS, 5489.

physical, 3281A.

polymer, at NBS, 5573; 5574.

positions, rating scale method for evaluating, 3396. program of the NBS, Radiation Physics Division, TN92 (PB161593).

project, personal side, 5780.

scientific, instrumentation, 1741A.

Soviet, in field emission, 1960-1963; an annotated

bibliography, TN234.

spectroscopy, 5201.

statistical association techniques for mechanized

documentation, M269, p. 3. strain gage, at NBS, 5702.

teeth, 4898. topside sounders in ionosphere, 9104. whistlers and related phenomena, summary, J 64D6-96, 642 (1960). Research highlights at the National Bureau of Standards, Annual Report:

1960: M237.

1961: M242.

1962: M246.

1963: M255.

1964: M264.

1965: M279.

Research, hydraulic, in the United States: 1960: M231.

1961: M238.

1962: M245.

1963: M249.

1964: M261.

1965: M270.

Residential, split-type, air-to-air heat pumps, 4828. Residual, arc spectra of seventy elements diluted in copper, 3752.

entropies, calorimetric, of glasses, 6830.

losses in a guard-ring micrometer-electrode holder

for solid-disk dielectric specimens, J 65C2-61,

101 (1961) ; 4280. microstresses in alpha brass, Bauschinger effect, J 65C4-79, 265 (1961). 674
range, and range rate errors due to the troposphere, 5643.

strains in individual grains of polycrystalline alu- minum, x-ray measurement, J 68C4-171, 249

(1964).

stresses and their relaxation on the surfaces of

sections cut from plastically deformed steel specimens, J 67C2-123, 101 (1963).

thiosulfate, stability of, in processed microfilm, J

67C1-115, 15 (1963).

Resin, self-curing, direct, hard—denture reliners, 7174. Resins and technics used in constructing dentures, 8995. Resins, plastics, rubbers, fibers, analysis of monomers

and polymeric materials, 3138.

self-curing, for repairing dentures: some physical

properties, 1484A. Resinography with 8-A X-rays, 5644. Resistance, alkali, of porcelain enamels, standard test for determining, 6393. bridge methods, calibration of potentiometers, 5938. calorimetry (10°K-380°K) , electrical resistance of wires of low temperature-coefficient, 6018.

corrosion, 5269.

electrical, wires of low temperature-coefficient of

resistance useful in calorimetry (10°K-380°K)

,

6018. lambda variance and its application to TAPPI

standard T414 m-49 for internal tearing, 5923. measurements, insulation, 4702. platinum, thermometers, 10° to 273.15°K, 4708.

reciprocal, DC dielectric conductance and conductivity (reciprocal resistivity) measurements,

6697.

strain, electrical, characteristics of thin evaporated metal films, 5319. strain gages, 4516.

strain gages, method for measuring the instability of at elevated temperatures, 5142. surface electrical, lead iodide films with RH at room temperature, 6567.

tearing, internal, of paper, TAPPI standard T414

M-49, effectiveness of a reference material in reducing the between-laboratory variability, 5202. thermometer to calorimetry, 4498. thermometers, 4485. thermometers, temperature scales, thermocouples,

5729. thermometry in the liquid helium temperature re- gion, 4900. weather, porcelain enamels exposed for 7 years at various sites, 6531; 6538. white sapphire and hot-pressed alumina to collision with liquid drops, J 64A6-72, 499 (1960).

Resistive, cathode, method of obtaining a range of cur- rent densities, 6865. transition in Nb3 Sn, 5041.

Resistivities of anisotropic conducting media in situ, methods of measuring, J 66C3-98, 217 (1962).

Resistivity, four-point probe measurement of non-uniformities in semiconductor sheet, 6082. preparation of copper crystals with low electrical, 8956.

reciprocal, conductivity, measurements and DC di- electric conductance (reciprocal resistance),

6697. semiconductor materials for electron devices, bibli- ography on the measurement, TN232.

semiconductor measurements by a two-terminal method, 4926.

specific heat and enthalpy of electrical conductors

at high temperatures, high-speed (millisec- onds) method for simultaneous measurement,

6546.

studies, electrical, on the Athabasca Glacier, Alberta, Canada, J 64D5-79, 439 (1960).

Resistor, noise test system, 4593.

shielded, for high-voltage d-c measurements, J 66C1-83, 19 (1962).

stepless variable, high currents, 4316.

Resistors, carbon, as low temperature thermometers in the presence of stray rf fields, 3897. carbon, for cryogenic liquid level measurement, TN200.

commercial carbon composition, pressure transducers, 6644. four-terminal, errors in the series-parallel buildup, J 69C3-197, 181 (1965).

thin film, nickel oxide, low pressure shock wave

detection, 3665. Resolution, characteristics of correlation arrays, J

65D3-126, 245 (1961).

high, infrared determination of the structure of carbon suboxide, 6113.

high, low-energy electron spectrometer, 6115. infrared spectra of C2

12 H2 , C,2 C

13 H2 , and C2"H=, high,

6114.

limits of analyzers and oscillatory systems, J 67A5-

235, 461 (1963).

test chart, NBS microscopy, 5498. Resolved quantum levels, 4710. Resolving power and type of test pattern, variation, J 64C3-39, 209 (1960). Resonance, characteristics of a corrugated cylinder excited by a magnetic dipole, 4281.

electron paramagnetic, primarily 3d wavefunctions

of the tetrachlorocuprate ion, 6731. electron paramagnetic, tetrahedrally coordinated copper++

: tetrachlorocuprate ion, 6029. electron spin, gamma-irradiated cellulose, 5331.

electron spin, spectra of aged-irradiated polystyrenes, 5332.

electrostatic oscillations in the ionosphere, 6346. Resonance energy transfer, delocalized versus localized pictures, 5276. excitation of a corrugated cylinder antenna, 3692.

fermi, condensed CF4 and CCh, 6754. ferromagnetic, and shape-dependent effects, 5355. heavy nuclei, damping of giant, 6675.

light scattered from a plasma, 8996.

line sources, intense, photochemical work in the vacuum ultraviolet region, 6141.

lines 1067 and 1048A, photolysis of ethane at the argon, 8940A.

lines, xenon, vacuum ultraviolet photochemistry,

photolysis of cyclopropane, 5840. method of measuring the ratio of the specific heat

of gas Cp/Cv, 776A. Mo5+ in rutile, electron spin, 6031. nature of plasma, 8917. nuclear, and the hyperfine field in dilute alloys of

nickel in iron, 5521. nuclear, coupling constants in saturated aliphatic systems, 4910. nuclear magnetic, bulk nickel samples, 6896. nuclear magnetic, lead alloys, 6233. nuclear magnetic, RbMnF3 , 6897. nuclear magnetic, metal powders at low temperatures, 5517. nuclear, In115 in a non-cubic environment, absence

of pronounced quadrupole effects, 5898. nuclear photoeffect, 5001. paramagnetic, free hydroxyl radical, 3278. paramagnetic, spectra of active species. Blue material from hydrozoic acid, 3279. paramagnetic, static susceptibility, 6796. Pb207 nuclear magnetic, lead-indium alloys, knightshifts and line widths, 5439. phenomena, paramagnetic, 4826. probes, theory, interaction of an antenna with a

hot plasma, J 68D11-417, 1171 (1964).

relaxation, ferromagnetic, wide spin wave coverage by ellipsoids, 6068. scattering by atmospheric sodium, 3753. 675
scattering, helium, electron monochromator, 5330. space between earth and ionosphere, J 65D5-152,

465 (1961).

spectra, electron paramagnetic, zinc-doped copper

acetate monohydrate, 6733. spectrum, electron paramagnetic, bis-8-hydroxy- quinolate-copper (II) dihydrate, 6732. spectrum, electron paramagnetic, tris-complexes of copper, 6443. studies of free radicals in irradiated materials, 3200A.

study, nuclear, gallium-substituted yttrium iron garnet, 6899. study, nuclear, hyperfine fields in nickel-rich nickel- cobalt alloys, 8900.

spin-echo, nuclear, study of Eu163 in EuO, 6898. Resonances, baryon, and meson in relativistic SU(6),

6861. baryon, verification of the tenfold assignment, 5846.

cavity, spherical earth and a concentric shell, 6625.

classification of in the electron scattering cross

section of Ne and He, 5234.

cyclotron, slightly ionized gases, 5274. earth-ionosphere cavity observed at Cambridge,

England, J 69D8-540, 1071 (1965).

elastic, electron scattering from He, Ne, Ar, Kr,

Xe, and Hg, 6721.

electron scattering from H2 , energy losses and elastic, 6042. multichannel, forward scattering of electrons by

helium, 6875. plasma, upper ionosphere, 5569. Schumann, J 69D10-568, 1345 (1965). Schumann, earth-ionosphere cavity—extremely low

frequency reception at Kingston, R. I., J 66D3-

199, 313 (1962). Schumann, earth-ionosphere cavity, theory, 6261.

09 Ga and nGa in gallium-substituted yttrium iron garnet, nuclear magnetic, 6234.

solute nuclear magnetic, primary lead alloys, 9012. sound velocities using NMR techniques, ultrasonic determination of crystalline, 9124. spherical void in a compressible isotropic plasma,

6347. unitary symmetry selection rule and its application, 5896. Resonant, characteristics of a corrugated sphere, J

67D3-268, 347 (1963). frequency shifts, some causes, in atomic beam machines, I. Shifts due to other frequencies of

excitation, 5667. frequency shifts, some causes of, in atomic beam

machines, II. The effect of slow frequency modulation on the Ramsey line shape, 5668. non-resonant line shape in micro-wave absorption,

9119. probes to resonant scattering, relationship of a.c, 9093.

scattering, relationship of a.c. resonant probes,

9093.

structures, millimeter wavelength, 4775; 5490. Resonator, cavity, dielectric measurements of rod

samples, 3458. coherent Roman effect in the off -axis Raman, 5951.

off-axis, stimulated Brillouin scattering, 6404. Resonators, cavity, dielectric spectroscopy of compressed gases, 3156. millimeter and submillimeter wavelengths, 4282. spherical mirror Fabry-Perot, 5686. X-band TEOll cavity, end plate modification, 3201. Response, highly precise balances to thermal gradients, J 68C3-158, 135 (1964).

lens, for sinusoidal and square-wave targets at sev- eral focal positions, comparison, J 65A6-127,

465 (1961). microchemical balances to changes in relative humidity, J 64C4-47, 281 (1960).

microwave refractometer cavities to atmospheric

variations, 6475. NBS microwave refractometer cavities to atmospheric variations, J 69D9-554, 1213 (1965).

nonlinear, application of a general formulation, 2. large longitudinal retarded elastic deformation

of rubberlike network polymers, 5442. semi-conductor detector at low temperature, 5921.

silicon semiconductor radiation detectors at low

temperatures, 6813. thermoelectric (radiometric) detectors, some fac- tors affecting the sensitivity and spectral, 9019. Responsibility of the engineer, new, international standardization, 5421. Restoration of complete dentures inadvertently warped

by the patient, 8997. Restorations, dental, properties of a silica-reinforced polymer, 5600. Restorative materials and tooth structure, 4975. Results, absolute determination of the acceleration of

gravity, 8998. cross-capacitances per unit length of cylindrical three-terminal capacitors with thin dielectric films on their electrodes, 3777. CSIRO, Sydney, Australia, J 69D12-585, 1536

(1965).

early, ionospheric topside sounder satellite, 5671. energy-dependent Milne problem for light gases, 6381. experimental, how people influence, 6118. experimental, with Anderson's theory, comparison,

6311.

first, NASA topside sounder satellite, 5362. method, obtaining ionospheric N(h) profiles and

their bearing on the structure of the lower F

region, 5678; 6380. NBS corrosion investigation in disturbed and undisturbed soils, 8999. non-negative matrices, J 65B3-58, 205 (1961). problems in calibrating the NBS photoelectric py- rometer of 1961, 4927. recent investigations of Jupiter's decametric radiation, J 69D12-584, 1530 (1965). recent transport calculations for electrons and

bremsstrahlung, 9000. Resurgence of solar and geomagnetic activity, 5645. Retained evaporation mask, magnetically, 5457. Retannage of chrome-tanned leather with vegetable

tannins, 4376. Retarded elastic deformation, large longitudinal, of rubberlike network polymers. 2. Application

of a general formulation on nonlinear response,

5442. Retention system, hydrogen, pressure calibration of mi- crophones in small couplers, 5393.

Retrieval, associative, M269, p. 230. document, M269, p. 163. document content analysis, M269, p. 47. document, studies, 5039. information, M269, p. 149. peek-a-boo information, 4479; 5104.

replica copy, rapid selector as currently used for information search, 5786. system, information, operational, in the field of

cryogenics, 5194. systems, informational, screening method, 3943. Retrieving, facsimile documents, TN157.

replica copies, information selection systems: a

state-of-the-art report, TN157.

replica documents, TN157.

Return stroke of the lightning flash to earth as a source

of VLF atmospherics, J 68D7-375, 777 (1964). Reverberant sound fields, interference patterns, 6809. Reverberation chamber measurements of sound absorption coefficients, 4240. Reversal of the diurnal phase variations of GBR (16
kilocycles per second) observed over a path of 720 kilometers, 6349.

Reversibility of polyester adsorption on glass, J 67A6-

246, 601 (1963).

Reversible, heat effect attending the passage of electric current across a liquid junction, measurement,

6020. permeability measurements, air core primary radio frequency permeameter, 5186. Review and compilation at the NBS, thermodynamic

data, 6503. Review, effect of microstruction on mechanical behavior

of polycrystalline ceramics, Mono.59, p. 103. fundamental development in analysis: emission

spectrometry, 4901. hydraulics of circular sewers in accordance with

the Manning formula, 3398. methods for the excitation of atomic and ionic spectra by means of high-frequency discharges and sliding sparks, J 68C4-169, 237 (1964). mode theory of radio propagation in terrestrial waveguides, 5646. photodetachment and related negative ion processes relevant to aeronomy, 5885. radar studies of planetary surfaces, J 69D12-609, 1617 (1965). radio standards and measurements, microwaves,

8975. recent developments of high temperature thermocouples, 5647. reviews of atomic spectroscopy, 5648.

static seals for cryogenic systems, 6350.

zinc oxide-eugenol type filling materials and ce- ments, 6559. Reviews of atomic spectroscopy, 5648. Revised, standard values for pH measurements from

0 to 95°C, J 66A2-150, 179 (1962). term values of Ti I, 3297. Revision, current, solar spectrum table 2935 A to X8770A, 9066.

Revisions, major, made in new dry cell standard, 6842.

Revivified bone char, calcium sulfate from, 4571. char in storage, 4507. Revolution, Fisheriana, technique of experimentation,

5753. second industrial, 5794. Radio frequency, excited helium-neon gas lasers, 6769. experiments, effects of rocket outgassing, J 69D9-

555, 1219 (1965).

fields, stray, use of carbon resistors as low temperature thermometers, 3897. impedance probe measurements of ionospheric elec- tron densities, J 66D6-224, 641 (1962). instrumentation, VHF and UHF power generators, TN77 (PB161578). microwave power measurements, J 68D5-360, 527

(1964); 6351. power transfer standard, 3391.

precision, attenuation calibration system, 3390.

signal power, signal-to-noise ratios, and bandwidth for multichannel radio communications

systems, TN100. vacuum tube voltmeters, precision calibration, TN121 (PB161622). RH at room temperature, study of the variation of the surface electrical resistance of lead iodide

films, 6567. Rhenium, Cs+ and Ba+

, kinetics of desorption, 5435. polycrystalline tungsten and, the kinetics of posi- tive ion desorption, 5767. Rh+

, K

+ and Na+

, kinetics of desorption, 5436. vapor pressure and heat of sublimation, J 70A2-

393, 175 (1966). Rheological properties of polymers, 5009. Rheology of sand-water and clay-water mixtures, 3446.

Rhodium, determination, rhodium-uranium alloys by

precipitation with hydrogen sulfide, 5287. platinum, and iridium, vapor pressures, J 65A4-

113, 289 (1961). thermocouple, studies at NBS of the platinum-6% rhodium vs. platinum-30%, 5708. uranium alloys, determination of rhodium in, by

precipitation with hydrogen sulfide, 5287. versus iridium thermocouples, 4887. versus platinum-30% rhodium thermocouple, of platinum-6%, 5708. Riemann, integral, two-dimensional, a variant, J 69B3-

152, 185 (1965).

zeta function, AMS55.

Rifle bullet impact, strain distributions, 9047.

stress-strain properties of textile yarns, 3795;

4646; 4945; 5706; 9046. Rigid mount, transparent, vacuum stopcocks, 5830.

Rigidities and the earth's magnetic field, on the cosmic- ray cut-off, 8990. Ring, antennas, concentric, with low sidelobes, 6596. calibration error, uncertainties associated with

proving, 9125.

elliptic vortex, localized-induction concept on a curved vortex and motion, 6832. Rings, Liesegang, 4142. metallized polymer film guard, 6862. Risetimes, nanosecond, behavior of coaxial cable con- nectors for pulses, 5933. Ritz standards. Germanium vacuum ultraviolet, 4672. R(0) and P(l), shift, infrared lines of HC1 perturbed by noble gases, 9006. Road wear of tires, factors influencing, 446A.

Robustness of life testing procedures based on the exponential distribution, 4283. Rocket, experiment involving radio reflections from

the topside of the ionosphere, 5162. outgassing, effects on RF experiments, J69D9-555,

1219 (1965).

ultra-violet lines, radiation transfer problems,

5617. Rockets, chemical and nuclear, liquid hydrogen, 3602. Rocks, two, evaluation of chemical analyses, 3205. Rod samples, cavity resonator dielectric measurements,

3458. Rods, cylindrical, numerical solution of the frequency

equations for the flexural vibration, J 64B4-39 237 (1960). gas of long thin, first order phase transition, 5361. Roentgen measurement, comparison of national standards, 3478. Roentgenography, panoramic, present status, 4244.

Role, capacitance in the National Reference Standards

for high frequency impedance, 5042. carbon dioxide, bone char process, 5791. cryogenics in the production of high and ultra- high vacuum, 6476. cryogenics is playing in expanding mechanical

engineering, 6156. government research laboratories, 3348.

Institute of Basic Standards, plans for better measurement and accuracy, 9081. international union of pure and applied chemistry,

5792. process of reflection in radio wave propagation,

J 66D3-195, 273 (1962). surface tensions in determining certain clay-water

properties, 3862. temperature in our measuring system, 5043. Roles of free volume and activation energy in the

viscosity liquids, 8920.

Roll features in sandstone, isotopic fractionation of uranium, 6166; 6819. Roof, and floor construction, forms for two-way concrete joist, R265-63. 677
flat, insulated, constructions, 4749; 4994. Roofing, asphalt shingle, wind resistance, 4411.

asphalts, durability, 4664.

built-up, effects of thermal shrinkage, Mono.89.

built-up, effects on—solar heating, radioactive cool- ing, and thermal movement, TN231.

maintenance and asphalt shingles, 3142. materials, projection x-ray microscopy, 5599. Roofs, and floors, precast cellular concrete, fire tests, Mono.45.

flat and heat insulation moisture effects, 3213.

Roots, and growth of electronic computers, 5002.

characteristic, comparison theorems for symmetric

functions of, J 65B2-49, 113 (1961). Room temperature, elastic constants of cubic lead

fluoride, 6720. oxidation of iron at low pressures, 6352. study of the variation of the surface electrical resistance of lead iodide films with RH, 6567. Rosen interaction potential of two helium atoms, 5245. Rosin, zinc oxide hydrogenated, o-ethoxybenzoic acid and eugenol, physical properties of cements,

6290. Rotary positive displacement meter, 5813. Rotary-vane attenuator, gearing errors as related to alignment techniques, 6771. waveguide, analysis of rotation errors, 5196. Rotary vane attenuators, TN177. A=-40 logio cos © )

, table of attenuation as a function of vane angle, TN229.

Rotating beam fatigue testing machines, a simple en- vironmental chamber, 5164. diamond-abrasive dental instruments, methods, 2197A.

shutter for time-resolved spectroscopy in the micro- second range, 9001. Rotation, by slow electrons, excitation of molecular,

6061. errors of a waveguide rotary-vane attenuator, 5196.

internal, methylsilylacetylene, microwave spectrum and barrier, 6869. molecular, slow electrons, excitation, 6747.

optical, 4820.

vibration, bands of deuterium cyanide and hydro- gen cyanide, 6529. vibration constants of acetylene, 5649. vibration interaction correction, molecular hydrogen, intensity of quadrupole fundamental, 6144. vibration spectrum of matrix-isolated hydrogen

chloride, 4902. Rotational constants of excited vibrational states of

14N2 16o, 6354. constants of hydrogen chloride, 3863.

fluorescence relaxation of OH radicals in flames, 3544A. micromanometers, J 66C4-112, 363 (1962). perturbations in CN. I. Zero-field theory, 4903. spectrum, hyperfine structure, 5006. transfer in the fluorescence spectrum of OH (

2 2

+ ), 3298. vibrational and electronic energy transfer in fluorescence of nitric oxide, 5650.

vibrational, spectroscopy, 5124. Rotations, coordinate, real representations, 3742A.

Rotator, centerable, for measuring properties of

crystals, J 69C3-198, 191 (1965).

Rotators, asymmetric ethanic, 1, 2-disubstituted pro- panes, 6223. Rotors, symmetric, calculation of the energy levels, 3817. asymmetric, line strengths of. Microwave spectral

tables, Mono.70. Vol. II. Rough surface, J 68D4-359, 451 (1964).

Roughness, effects, dose rate from fallout radiation, proposed experiment to measure, 5602. Round robin test, ranking laboratories, 5628; 6332. Routes, determination of fastest, using fixed schedules,

5288. Routine methods of radioactivity standardization at the NBS, 3754. Rubber, alum-coagulated SBR synthetic, chemical

analysis by a complete solution procedure, 3996. based, synthetic, dental impression materials, physical properties, 3713. based, synthetic; proposed specification for impression material, 3730. behavior and evaluation, 3985. compounding, standard materials, 3312. hardness, standard and microtests, 4535. Industry, American, NBS activities, 5497.

kinetics of natural, crystallization, the effect of hydrostatic pressure, 5747. laboratory of NBS, control of temperature and

relative humidity, 6659. natural, at pressures below 500 kg/cm2

, compressibility, J 68A3-271, 259 (1964).

natural, effect of hydrostatic pressures on the

crystallization kinetics, 5309. natural, networks, melting temperature, 3848. products and rubber, 5197; 5651. pure-gum vulcanizated from indentation-time measurements, 4554.

related products, methods for the analysis, 5479. rubber products, 5197; 5651. second-order transition, J 68A6-308, 611 (1964). sulfur vulcanizate and its relation to free volume, dynamic compressibility, 3827. vulcanizate, pure-gum, compliance-time-temperature relationships from indentation measurements, J 69A4-354, 347 (1965).

_ vulcanizates, measurement of the aging, 3249. Rubberlike, network polymers, 4727. polymers and its molecular interpretation, linear

viscoelastic behavior, 3844. polymers, model for viscoelastic behavior, J 66B4-

85, 171 (1962). Rubbers, natural and synthetic, 4188; 5499.

plastics, resins, fibers, analysis of monomers and

polymeric materials, 3138. synthetic and natural, 4188; 5499. Rubidium 87 and proton Zeeman transition frequencies

in the earth's magnetic field, 4537. vapor, hyperfine transitions, 3230A. Rubidium, electronic g factor, 6034.

fluoride, RbF, 4681. prototype, vapor frequency standard, 3392. vapor frequency standard, TN235.

Ruby, giant pulse laser, study of anthracene fluores- cence, 5165.

laser, ordinary, characteristics of Raman laser, 6628. Rugged null-type pressure transducer of high reproducibility for accurate gas phase PVT measurement, J 69C1-182, 27 (1965).

Rule, unitary symmetry selection, its application to new resonances, 5896. Rules, empirical, predicting ground-state spins of light

nuclei, 6038. relating coherent X-ray scattering data, sum, to the diamagnetic nuclear shielding constant and

to the self-energy of the charge distribution of the scatterer, 5714. Runge-Kutta method, split, for simultaneous equations, J 64B3-32, 151 (1960). Rupture, modulus, glass in relation to fracture pattern,

6217. Rupture-disk ampoule for anhydrous addition of hydro- gen fluoride, J 70A2-389, 143 (1966). 678
Russian, mechanical syntatic analysis, 3934. Ruthenium and osmium, vapor pressures, J 68A3-280,

325 (1964). (Ru i), low even configurations in the first spec- trum, 3243.

Rutile, containing point defects, internal friction, 6148.

crystals grown by flame-fusion methods, disloca- tions and stacking faults, 6701.

electron spin resonance of Mo5+

, 6031. Lorentz corrections, 4152. properties of (titanium dioxide), 3345. reduced, electron energy levels and their relation- ship to lattice defects, 5327.

single crystal, some elastic compliances of, from

25 to 1000 °C, J 68A6-316, 669 (1964).

Rutile (Ti02 ), elastic constants, J 66A6-181, 465 (1962).

electronic conduction, 3524A.

n-type, multiple-band conduction, 6876. polar modes of lattice vibration and polaron cou- pling constants, 6294. recent studies, 4266.

static dielectric constant, 4312.

stoichiometric, theory of electronic susceptibilities, 6496. thermal conductivity and thermoelectric power,

9106. Rydberg series, molecular oxygen near 500A, 6887. Ryser's "normal and integral implies incidence" theorem, 3921.

S S-wave hyperon-nucleon interactions and SU3 symmetry, 6415. Saccharinic acids, formation, TN274.

Safe handling of radioactive materials, H92.

Safety levels in military inventory management, 4904.

residential chimneys and fireplaces, survey of the

literature, M252.

rules for the installation and maintenance of electric supply and communication lines, H81.

standard for non-medical X-ray and sealed gammaray sources. Part I. General, H93.

use of liquid hydrogen, 6355. Saha equation for ionized helium. Departure from. I. Condition of detailed balance in the resonance

lines, 4027, and II. Atmospheric thicknesses too small to satisfy detailed balance in the res- onance lines, 4028. equation on infrared properties of the low chromosphere, effect of departures. Thermodynamic

structure of the outer solar atmosphere, 3887.

Salaries of scientists, and engineers, 5709.

Salt bridge, 3755.

effects and medium effects on indicator acid-base

equilibria in a methanol-water solvent, 6356.

Salts, molten, conductance of glass immersed, 6652. molten, special porcelain of high sodium content, cation-exchange, 5942. molten, systems, sodium ions, 3123. systems, fused, observations on reference electrodes, 5514.

Salts, lanthanide, audiofrequency dispersion effects, low

temperatures, 5208. oxidation of metals, 4824. Salzburg conference, report, radiochemical methods of

analysis, 8976. Same line-of-sight path at different frequencies, correlation of the phase of microwave signals, 5267. Sample and sampling preparation techniques in spec- trochemical analysis, 6409. Sample, container transitions, errors in drop calorimetry, 5341.

holder, improved X-ray diffractometer furnace,

5400. median, 4499.

procedure, and the laboratory, 3864. Sampled data, TN334.

Samples from a rectangular universe, distribution to students, 5998. nuclear magnetic resonance in bulk nickel, 6896. precise assay of copper using small, 8951. report on standard, 5639. standard, and related materials for spectrochemical analysis, 3786. Sampling base line, M260-8.

distributions, bibliography, 1930 to 1957, J 66B3-

80, 109 (1962).

leather for physical and chemical examination,

9002.

principles and methods, 3285. sample preparation techniques in spectrochemical

analysis, 6409.

side upper leather, 342A.

statistical, TN191.

statistical design, 6357. Sand, Ottawa, standard, test method for air-entrain- ment, 3408A. water and clay-water mixture, atomistic approach

to the rheology, 3446. Sandstone, fractionation of uranium isotopes and

daughter products in weathered granite and

uranium-bearing, 6084.

isotopic fractionation of uranium related to roll features, 6166; 6819. uranium, isotopic fractionation, 5433. Sandwich construction under lateral and axial loads, 745B. Sanitary drainage systems for buildings, capacities of

stacks, Mono.31.

Sansone, G., problem, 6243. Sapphire (AI2O3) foils, energy spectra and angular

distributions of electrons, 6043. calcium fluoride, lithium fluoride and barium fluo- ride, effect of temperature on the vacuum ul- traviolet transmittance, 6717. resistance of white, and hot-pressed alumina to

collision with liquid drops, J 64A6-72, 499

(1960).

synthetic, 4890. windows to ceramics, high temperature seal, 6782. Sash, windows, and screens, ponderosa pine (using

single glass and insulating glass), CS163-64.

Satellite, Alouette topside sounder minimum telemetry

receiving system, TN222.

Alouette topside sounder, spread- F observations,

6388. Alouette I, VLF noise bands observed, J 69D1-443,

69 (1965).

artificial, inclusion of the third zonal harmonic in an accurate reference orbit, J 70B1-166, 17

(1966).

artificial, zonal harmonic perturbations of an accurate reference orbit, J 67B4-103, 191 (1963). astronomy, theory of accurate intermediary orbit, J 65B3-56, 169 (1961). communication systems, TN126.

files, TN285.

first observations from the fixed-frequency topside sounder; ionosphere explorer I satellite, 6161. fundamental band origins. Spin-orbit coupling con- stant of nitric oxide, 6387. ionosphere explorer I: first observations from the fixed-frequency topside sounder satellite, 6161. ionospheric topside sounder, 5671. NASA topside sounder, 5362.

orbits, new approach to the theory, 3265.

orbits, spherical method, 5797. program, NASA top-side sounder, 4657. radio signals, analysis of polarization rotation re- cordings, 3678A.

scintillation observations at Boulder, Colorado,

6358. 679
signals, polarization fading, 3878.

signals, use of polarization fading to study the

electron content and irregularities in the ion- osphere, J 64D4-66, 335 (1960). surface communication systems, 4186. surface communication systems, mutual interfer- ence, J 65D5-148, 433 (1961). tracking stations, NASA, VLF utilization, J 68D1-

315, 43 (1964).

Satellites, geo-stationary, study of ionospheric electron content and ionospheric radio-wave propagation, 3877. manned, drag compensation and measurement with:

feasibility study, J 67C3-135, 247 (1963). measurement of irregular ionospheric refraction, 4382. signals from, F-region irregularities studied by

scintillation, J 68D8-386, 881 (1964). upper atmosphere, 4284. Saturated aliphatic systems, 4910.

chains, two assumptions in the theory of attractive

forces, 5832. H3 + hydrocarbons, proton-transfer reactions be- tween, 6319.

liquid para-hydrogen, 5047. Saturation region, electrolytic conductance of ammoni- um dihydrogen phosphate solutions, 5324. Saving precious alloys by intelligent use of alternatives, 304A.

Scale, absolute, oscillator strengths, 5175. atomic time, synchronization, 5719.

1948, international practical temperature, J 65A3-

96, 139 (1961). NBS time, and its relation to other time scales, 9088.

nuclidic masses and atomic weights, 4789.

oscillator strengths, 5173.

rating, method for evaluating research positions, 3396.

1948, realization and use of the international practical temperature, 9094.

time, its generation and dissemination; The NBS,

9087A.

Scales, an automatic fringe counting interferometer for use in the calibration of line scales, J 65C2-64, 129 (1961). comparison of the TAi, and the NBS-A atomic

time, 5868. NBS time, and its relation to other time scales, 9088.

notation, AMS55.

temperature, thermocouples and resistance ther- mometers, 5729.

time, comparison of two independent atomic, 5131. Scandium-46, M260-9.

Scanner, digitizing pictorial information with a preci- sion optical, 5991. Scanning for, electronic, large radiotelescopes, 5334. microscope, electronic for a spectrographs plate comparator, J 65C1-50, 1 (1961). Scatter-propagation path, optimum frequency deviation

in an FM system, 8918. Scatter technique, incoherent, using the, equatorial elec- tron density profiles to 5000 KM, 5336. VHF, systems, factors affecting modulation tech- niques, 3210. Scattered field, multiply, statistical distribution of amplitude and phase, J 66D3-191, 231 (1962).

radiation from Co00 sources, intensity and spectral

distribution, 5764; 9082. radiation from large cobalt-60 calibrating sources, 4906. radiation from large Cs137 sources, 4905. signals and simple refractivity parameters, correlation between hourly median, J 66D3-196, 285

(1962).

Scatterer, sum rules relating coherent X-ray scattering data to the diamagnetic nuclear shielding con- stant and to the self-energy of the charge dis- tribution, 5714. Scattering, absorption of photons by deformed nuclei, 4466. coated sphere, high frequency, J 66D5-222, 613

(1962).

cobalt-60 gamma radiation in air ducts, TN74

(PB161575).

conducting sphere embedded in a semi-infinite dis- sipative medium, J 66D5-221, 607 (1962).

corrections, multiple, for proton range measurements, 6218A.

coulomb, without atomic excitation, for 50-, 100-, 200-, and 400-keV electrons, 5270.

data, coherent X-ray, to the diamagnetic nuclear

shielding constant and to the self-energy of the charge distribution of the scatterer, sum

rules, 5714.

diffraction, J 64D6-96, 707 (1960).

effects, ionospheric, in long-distance propagation,

J 67D3-263, 287 (1963).

elastic electron, radiative tail, 6327.

elastic electron, screening effects, 6363. electromagnetic and electroacoustic waves by a

cylindrical object in a compressible plasma, J

69D2-461, 247 (1965). electromagnetic, from a radially inhomogeneous

sphere, 5325.

electron, from H2 , energy losses and elastic reso- nances, 6042.

electron, from He, Ne, Ar, Kr, Xe, and Hg, elastic resonances, 6721.

electron, without atomic or nuclear excitation, 6030.

electrons, inelastic, calculation of the radiative tail, 5937. exclusion of parity unfavored transitions, 6062. experiments in electron, 6752.

factors, experimental atomic, for magnesium oxide, 6749. forward, electrons by helium, multichannel reso- nances, 6875. forward-stimulated Brillouin, optical heterodyne

detection, 6271. 7 rays by nuclei, TN83 (PB161584).

incoherent, free electrons as a technique for study- ing the ionosphere and exosphere: Some ob- servations and theoretical considerations, J

65D1-97, 1 (1961). incoherent inelastic neutron, and self-diffusion, 6126. incoherent, radio waves by a plasma, effect of coulomb collisions, 6441.

inelastic electron, rare gases, determination of oscillator strengths in the continuum, 6127.

inelastic electron, rare gases, structure beyond the

ionization limit, 5707.

inelastic electron, radiative tail, 6328.

inelastic, electrons by helium, 6793.

inelastic, large-angle, 500-keV electron, 5441. ionosphere, radiowave, 5627. law, angular, for the moon at 6-meter wavelengths,

6601.

light, from dilute polymers solutions, 6177.

light, validity of Einstein-Smoluchowski theory,

6264. meson-barvon, SU(6)w photoproduction, 9053. multiple, of waves, J 64D6-96, 715 (1960).

off-axis resonator, stimulated Brillouin, 6404. one-dimensional, phase shift method, 4222. operator, three-particle, in classical gases, 5541. photons by deformed nuclei, 3756. polarization of microwaves, J 69D6-523, 893, (1965). radiowaves by a plasma, 5172. random volume, J 68D9-396, 967 (1964).
relationship of a.c. resonant probes, 9093. resonance, utilizing, helium, electron monochromator, 5330. resonances of a cylindrical plasma, J 69D10-566,

1321 (1965). slow electrons, elastic, by hydrogen atoms, meas- urement of the cross section, 5467. VHF, frequency dependence of £>-region, J 65D5-

145, 417 (1961). waves by many bodies, J 68D4-359, 500 (1964).

Schedules, fixed, determination of fastest routes, 5288. Scheme for obtaining integral and fractional multiples

of a given radiance, 5163; 5652. Schlieren systems, calibration, 6624. School buildings, building codes, 3452. summer, for theoretical physics, 5717. Schrodinger's equation, lower bounds for eigenvalues,

4157. Schroeckingerite and its dehydration product, X-ray

crystallographic study, 3134. Schumann resonances, J 69D8-538, 1043 (1965) ; J

68D8-540, 1071 (1965); J 69D10-568, 1345

(1965). resonances in earth-ionosphere cavity, J 66D3-199,

313 (1962) ; 6261. Science and engineering, physical measurement, 4228.

Science, calorimetry, 5940. eduction, joint board, 4359. experimental, and mathematics, 5462. federal government, 548A.

foreign-language dictionaries, M258.

library, books, 4390. news writing, 4285.

physical, applications of the four integral, 1267A.

polymer, 4847. polymer, unsolved problems, 4574.

state, and technology, current programs in the U. S. Department of Commerce, 6674.

talent, discovery and encouragement, 1312A.

unorthodoxy, 4397A.

Sciences, atmospheric, 4983.

Scientific contributions of William Weber Coblentz,

5044. engineering manpower, 5709. information, activities at NBS, 5653.

publications, number, 6310. research, instrumentation, 1741A.

research, radioactive contamination of materials

used, 4256.

societies, International, number, 6310.

talent, need for, 587A.

technical information, M276.

Scientists and engineers, trends in salaries, 5709. young, project ideas for, 3726.

Scintillation, ionospheric, radio waves of extraterrestrial origin, 3595. measurements and optical depolarization over a

terrestrial path, 6269. observations at Boulder, Colorado, satellite, 6358.

optical; survey of the literature, TN225.

pair-spectrometer, two-crystal, 6516. radio stars, 4484. responsible for ionospheric, a radio source, the

location of the irregularities, 5770. signals from satellites, F-region irregularities

studied, J 68D8-386, 881 (1964).

solid, counting of H3 and C

14 in paper chromato- grams, 3302.

Scintillations, broadband radio-star, Part I. Observations, J 68D8-385, 867 (1964).

radio source Cygnus-A observed, amplitude and

angular, at Boulder, Colo., J 65D4-137, 333

(1961). radio star, and spread-F echoes, 5622.

Scintillators, reactions induced, neutron detection, 3661.

Scission, random chain, stress relaxation, measurement,

6257. Scope of electrochemistry, 5793. Screen, variable, diffraction, TN224.

Screening effects in elastic electron scattering, 6363. method for large informational retrieval systems,

3943. procedure, transistor, using leakage current measurements, J 69C4-213, 319 (1965).

Screens, windows, and sash, ponderosa pine (using

single glass and insulating glass), CS163-64. Screw-thread standards for Federal services, 1963

Suppl. to H28 (1957), Parts I, II, and III. Sea and land paths, mixed, curves for ground wave

propagation, 5273.

ice at 0.1 to 30 Mc/s, electrical properties, J 68D6-

366, 681 (1964). moderately rough, low-frequency radio propagation,

J 67D5-287, 551 (1963). rough, VLF and LF fields propagating near and

into, J 69D2-464, 273 (1965). water from 5 to 120 °C, electrical conductivity of

dilute solutions, J 69A1-326, 39 (1965). SEAC and DYSEAC, dynamic circuit techniques used, 691A. system design, 1159AA. SEAC computations of subsonic flows, 3778.

Seal, evaluation and force, elastomeric O-rings, 5363. high temperature, sapphire windows to ceramics,

6782. leak-resistant rotation, for vacuum applications, J 67C4-145, 335 (1963).

Sealants, polysulfide, 5579; 5580. Sealed gamma-ray and X-ray sources, safety standard

for non-medical. Part I. General, H93. gamma sources, protection against radiations from, H73.

nickel-cadmium dry cells, 6789. source fabrication, TN276.

Sealed-off Hg103 atomic-beam light source, 3757. Seals for cryogenic temperatures, design of static elas- tomeric, 5983.

static cryogenic, recent developments in using elas- tomers, 6338.

static, cryogenic systems, 6350. Search for geomagnetic singular days, 3399. information, currently used for, and replica copy

retrieval, rapid selector, 5786. slow component, alpha ionization, 5655. 1.36-cm water-vapor line in Venus, J 69D12-597,

1577 (1965). Searching of multiple document collections, M269, p. 237. patent applications by manual and machine-assist- ed methods, patterns of thinking, 8934. Seasonal anomaly, F-region, 5756. day-to-day changes of the central positions of the

Sq overhead current system, 3758. diurnal changes in structure of mid-latitude quiet ionosphere, J 66D3-198, 297 (1962). diurnal cycles of transhorizon radio transmission

loss and surface refractivity, a comparative

study of the correlation, J 66D5-219, 593

(1962).

diurnal, geographical variations in composition of high atmosphere from F-region measurements,

6255. diurnal variations of the atmosphere near the 100-kilometer level, 5999. variation of nightglow NAI 5890-96 A, [01] 5577 A and [01] 6300 A in the tropics, TN329.

variations in the twilight enhancement of [01] 5577; 3759. Second acid dissociation of N, N-Di-(2-hydroxyethyl)- 681
glycine and related thermodynamic quantities from 0 to 55 deg., 6359. breakdown in transistors, 4907.

dissociation constant of deuteriophosphoric acid in deuterium oxide from 5 to 50 deg., 6360.

industrial revolution, 5794. order differential equations having an irregular

singularity of arbitrary rank, error bounds for asymptotic solutions, 6741; 8910. order differential operators, spectra, 1099A.

order effects in the mechanics of materials, 4908. order effects in the phosphorescence of benzo- phenone crystals at 77°K, 9003. order transition of a rubber, J 68A6-308, 611

(1964). order waves in hypo-elasticity, 4542.

redefinition, velocity of light, 5539; 5790. revision of American Dental Association Specification No. 4 for dental inlay casting wax, 4286. spectrum of tungsten (Wll), J 68A2-270, 207

(1964).

third virial coefficients for hydrogen, J 68A1-260,

121 (1964).

virial coefficient of a real gas, suppression at high temperature of effects due to statistics, 9051.

virial coefficient, sedimentation equilibrium, of poly- mers in good solvents, effect of heterogeneity

in molecular weight, 6251.

virial coefficients and parameters, kihara, for cryo- genic fluids and their mixture, 5434.

virial corrections from 1500°K to 15,000°K, tables of thermodynamic properties of air in chemical

equilibrium, 9055. Secondary capacitance standards to higher frequencies, TN201.

electrons, determination of the probability distribu- tion of the number, 5986 ; 6689. emission, work function, 5861. sulfonyloxy groups, contiguous, action of zinc dust and sodium iodide in N, N-dimenthylforma- mide on; a simple method for introducing non- thermal unsaturation, 6580A.

Sec-propyl ions, hydride and proton transfer reactions, 6120.

Section, acoustics, 5179. Nuclear Physics, NBS, 5520.

solid-state physics, 5664.

Sections, electromagnetic cross, for electron and nuclear

research, 6023. prestressed split-beam composite concrete, flexural behavior, 6758.

relativistic, cross, electrons, fc-ionization, 6172.

short, waveguide and the losses in waveguide joints, two-channel nulling method for measuring at- tenuation constants, 6573.

total photonuclear cross, low atomic number ele- ments, 9117. Sedimentation coefficient of polystyrene in dilute solution, concentration dependence, 6433A. depends linearly on concentration, exact Faxen

solution for centrifugation, 6057. equilibrium second virial coefficient of polymers in good solvents, effect of heterogeneity in molecular weight, 6251.

studies, application of a high-intensity, multi-slit Raleigh interferometer, 6604. Segmental variation of Blaschke products, 5795. Segments, polymer, in the vicinity of an absorbing in- terface, density distribution, 6678. Segregation at stacking faults and to the occurrence

of phase boundaries in F.C.C. binary alloys, relation of the stacking fault energy, 8988. Seismograph, intertial design, 4693. Selected alloys, effect of environment on the fatigue

strengths, 9074.

bibliography of statistical literature, 1930 to 1957, J 64B3-34, 175 (1960) ; J 65B1-46, 61 (1961) ; J 66B1-69, 15 (1962); J 66B3-80, 109 (1962). bibliography of statistical literature: supplement,

1958-1960, J 67B2-97, 91 (1963).

tables of atomic spectra. Atomic energy levels and

multiplet tables Si II, Si III, Si IV, NSRDS- NBS 3, Sec. 1. values of chemical thermodynamic properties, TN

270-1; TN270-2.

Selection of camera filters for color photography, M259.

diets, mathematical programming models to mini- mize weighted radionuclide intake, 5461. problem, sequence, crystallization of polymers,

5796.

rule, unitary symmetry, application to new resonances, 5896.

training, and evaluation of precision measuring

personnel in the Air Force, M248, p. 177. Selector, rapid, and, other NBS document retrieval

studies, 5039.

rapid, currently used for information search and

replica copy retrieval, 5786. Self-broadening of carbon monoxide in the 2« and 3v bands. J 67A3-209, 229 (1963).

Self-calibrating, instrument for measuring conductance

at radio frequencies, J 69C2-191, 115 (1965). attentuation-measuring systems, J 66C1-82, 13

(1962). Self-curing resins for repairing dentures: some physical

properties, 1484A.

Self-diffusion, TN333.

incoherent inelastic neutron scattering, 6126. ions in polyelectrolyte solution, 4811.

Self-distortion, radio signals in the D region, J 69D3-

472, 367 (1965). some linear phenomena in the ionosphere, J 69D1-

439, 9 (1965). Self-energy of the charge distribution of the scatterer, sum rules relating coherent X-ray scattering data to the diamagnetic nuclear shielding constant, 5714.

Self-ignition, a mathematical analysis, 5138. ionizing shock waves, in a magnetic field, experi- ments, 5353. mutual admittances of waveguides radiating into plasma layers, J 69D2-453, 179 (1965). pressurization and thermal stratification of a fluid container, theoretical model for predicting, 6572.

qualification of laboratories, 4287. reversed spectral lines, light source for producing,

J 66A4-166, 321 (1962).

service selling, standardization of dimensions of packages, 6395. siphonage of plumbing fixture traps, 538A. Semi-automatic instruction on the Zephyr, 306A.

technique for tuning a reflectometer, 6559A.

technique, isolation fault by, Project FIST:, 6314;

8960. techniques, fault isolation, Mono.83.

Semiconductor, application, surface-state charge-storage

device, 5203.

bar, rectangular, use with four-point probe measurements, potential distribution, 6301. detector at low temperature, anomaly in response,

5921.

field, general survey, TN153

materials, breakdown characteristics, 6616. radiation detectors, silicon, at low temperatures,

investigation of the anomaly in the response,

6813. sheet resistivity, four-point probe measurement of non-uniformities, 6082. 682
SrTiOa, dependence of superconducting transition temperature on carrier concentration, 6682. SrTiOs, superconductivity, 6411.

thin, circular samples, correction factor tables for four-point probe resistivity measurements, TN199.

Semiconductors, contact properties of thin films, 5741.

diffusivity, several new methods to measure, 3761.

electronic energy bands in SrTiO: , and related oxide, 6033. Faraday effect, 4651. nonstoichiometric, electrical properties, 4622. plasmas, complex conductivity, 3479.

properties, 5601.

resistivity measurements by a two-terminal method,

4926. Semicrystalline polychlorotrifluoroethylene, dielectric properties, J 66A4-162, 269 (1962).

Semi-infinite medium, stratified, some approximate

formulas concerning the reflection of electro- magnetic waves, J 68D11-422, 1215 (1964). Semi-multipliers as multipliers, realization, 8982.

Sensitive, detector, new mode of operation of a phase,

6885. thermal conductivity gas analyzer, 3760.

Sensitivity indices for Hall generators, TN233; 6361. photographic film to 3-Mev neutrons and to thermal

neutrons, 3865. spectral response of thermoelectric (radiometric)

detectors, 9019. temperature, strain gages at elevated temperatures, four methods of determining, 6763. Sensitometric properties, number, and structure of de- veloped grains, 6333. Sensors, point level, in liquid hydrogen, performance,

6469. Separable systems, continually periodic, mean motions, J 65B2-52, 131 (1961). Separation and determination of zirconium in zirconia

yttria mixtures by precipitation with cupferron, 6362. hafnium from zirconium and their determination:

separation by anion-exchange, J 66A6-187, 517

(1962). hafnium from zirconium by anion exchange, J 65A1-87, 75 (1961). methods, distillation, 5301. pyrenediones by column chromatography, TN274;

9004. Separations, applications of vacuum distillation of metals to radiochemical, 5665. Sequence, lithium iso-electric, wave functions and oscil- lator strengths, 5856. points for numerical quadrature, J 70B2-172, 127

(1966).

selection problem in the crystallization of polymers,

5796. transformation based on Tchebycheff approximations, J 64B4-38, 227 (1960).

Series, Rydberg, molecular oxygen near 500a, 6887.

stainless steels, in some 300, anomalous decrease

of the elastic moduli at very low temperatures,

6590.

Service, cement and concrete reference laboratory in- spection, for concrete testing laboratories, 6433. cryogenic, considerations when using turbine-type

flow-meters, 6656.

Services, calibration and test of the National Bureau

of Standards, M250.

gas measurement, at NBS, 5373. high frequency calibration and microwave, at NBS,

6208. microwave and high frequency calibration, at NBS,

6867.

time, of the NBS, LF-VLF frequency, 6176; 6837A.

Servo methods for utilizing cesium beam resonators as frequency standards, 4416. Sesquioxides and iridium in air, phase relations between, J 69A3-343, 245 (1965). Session on logical design, 1865A.

Sessions I and II, summaries, symposium on X-ray and

electron probe analysis, 5715.

Sets, difference, multipliers, 5496. family, 4553.

Seventies, standards, 5693. Seventy elements, ^/-values, 4647. Several alkyl radicals, relative rates at two carbon

positions and derived heats of formation: hydrogen atom addition to olefins, 6785. available standards, statistical construction of a

single standard, 6481. compounds of interest in a light element program,

combustion and reaction calorimetry, 6640. new methods to measure diffusivity of semiconductors, 3761. open shells, interaction between configurations,

6805. Sewers, circular, hydraulics, accordance with the Manning formula, 3398.

Sferic activity, initial results of a new technique for

investigating, J 65D2-114, 157 (1961).

excitation of a two-layer conducting medium, J 69D3-480, 423 (1965). observations of the severe weather on May 19, 1960, 4909.

pulses, 4612. lightning characteristics, 6829. measurements, ionospheric reflection coefficients at VLF, 2172A. Shadow loss and obstacle gain, comments on the flyer, 5244. Shallow cylindrical cavities, test of analytical expressions for thermal emittance, 6570. reference cavities, high-temperature emittance measurements, 5427. Shape and size distribution, particle, reinforced poly- mer, 6442. Shape, distribution function of lengths of a single polymer molecule with excluded-volume effects, 8916. geomagnetic field boundary under uniform external

pressure, 5045. magnetosphere boundary shape under solar wind

pressure, 6364. microwave absorption, transition from resonant

to non-resonant line, 9119.

stability, solid cylinder growing in a diffusion

field, 9034. Shape-dependent effects and ferromagnetic resonance,

5355. Shapes, line, collective excitations in Al, Be, and Ge,

6242. Shear modulus, measuring, 4425. strength of beams without web reinforcement con- taining deformed bars of different yield strength, 5654. Sheath, radiation and admittance of an insulated slot- ted-sphere antenna surrounded by a strongly

ionized plasma, J 64D5-91, 525 (1960). Sheet resistivity, four-point probe measurement of nonuniformities in a semiconductor, 6082. stringer panels, bonded and riveted, 1169A.

Shell, concentric, and spherical earth, cavity resonances,

6625.

Id, 2s, calculations of energy spectra of nuclei, 5219.

corrections, contribution to the theory, 5975. electron excitation, inner, neutral Kr and Xe,

Optically observed, 6274. 683
model treatment of nuclear reactions, 9005. systems, closed, pair correlations, 6281.

Shells, several open, interaction between configurations,

6805.

Shelter, fallout, ventilating problem, 5068. underground fallout, 4637. underground, family-size, 3532; 4322. underground, thermal environment, 4743.

Shelters, protective, mechanical system, 4570. Shielded coaxial leads for low temperature electrical measurements, 3762.

resistor for high-voltage d-c measurements, J

66C1-83, 19 (1962). Shielding against gamma rays, neutrons, and electrons from nuclear weapons. A review and bibliog- raphy, Mono.49.

calculations for civil defense, 3763. constant, diamagnetic nuclear, and to the self- energy of the charge distribution of the scatterer, sum rules relating coherent X-ray scat- tering data, 5714. high-energy electron accelerator installations, H97.

research and theory, future needs, 3554.

stability, collisionless plasma, 5258.

structure, against fallout radiation from nuclear weapons, Mono.42.

transient electromagnetic signals by a thin con- ducting sheet, J 64D5-94, 563 (1960).

Shift of the R(0) and P(l) infrared lines of HC1 per- turbed by noble gases, 9006. (phase) , impendance and attenuation, standards and measurement, 6396. system, multiple frequency, and the output signal noise ratio in a frequency modulation and

pulse code modulation frequency shift system,

error rate, 6446. system, multiple-frequency, error rate in, and the out-put signal /noise ratio in a frequency modulation and a pulse-code-modulation /frequencyshift system, 5751.

Shifter, analysis of a differential phase, 5916.

differential microwave phase, 5872. phase, variable, TN237, p. 3. Shifts, chemical, nitrogen NMR, azide ion, 5506. frequency, due to electron exchange collisions, 6008;

6153.

isotope and hyperfine structure, 2537-A line of mercury by a new interferometric method,

5394. observed wavelength, produced in electrodeless dis- charge tubes and predicted stark-effect shifts

in the spectrum of neutral germanium, 5977. pressure induced, infrared lines due to polar molecules, 5591. resonant frequency, in atomic beam machines,

5667; 5668. spectrum of neutral germanium, correlation be- tween observed wavelength shifts produced in electrodeless discharge tubes and predicted

stark-effect, 5977. widths of some stark broadened oxygen lines in an arc plasma, 5656. Shingles, asphalt and roofing maintenance, 3142. Shock-heated plasmas, relative oscillator strengths of some O II and O in lines from measurements,

6344. Shock tube, single-pulse, comparative rate measurements, 5958.

single-pulse, 4-methylcyclohexene and 4-vinyl-cyclo- hexene; decyclohexene of cyclohexene, 6676. thermal decomposition of some alkyl halides, 6499. thermal decomposition of 2,3-dimethylbutane in a

single-pulse, 9108. Shock wave, reflected, transverse magnetic field, propagation, 6316.

spectrophotometric determination of the rate of

dissociation of tetrafluorohydrazine, 9030. Shock waves, cylindrical, 4852. limiting breaking velocities, and critical velocities, 4945.

self-ionizing, in a magnetic field, experiments, 5353. ultra-high speed image dissecting camera for photo- graphing, J 66C4-105, 297 (1962). Shocks, strong, in helium-filled T tubes, measurement

of the structure, 4170. Shoe upper leather, study of two water resistance testers, 3406.

Shoreline, propagation of plane electromagnetic waves, J 66D3-200, 319 (1962).

Short-circuit, sliding, and an adjustable sliding termination, method of measuring the directivity of a directional coupler, 6201. Short-duration, cosmic noise absorption, events in con- jugate regions at high magnetic latitude, some

observations, 6375. cosmic noise absorption, events inside the southern

auroral zone, 5778. impulse voltages, measurement of, discussion of, paper, 5298.

visible afterglow in helium, 5657. Short, sections of waveguide and the losses in waveguide joints, two-channel nulling method for measuring attenuation constants, 6573.

stability of a quartz-crystal oscillator as measure

with an ammonia maser, 3299. Shortwave fadeouts, TN326.

magnetic chrochets, and solar flares, 4301. without reported flares, 3764. Should the conventional definition of mismatch loss be abandoned? 6365. Shutter, new fast-opening, large-aperture, for high- speed photography, J 67C1-120, 65 (1963).

rotating, time-resolved spectroscopy in the micro- second range, 9001. Side-on arc spectroscopy, use of an analog computer

in, 6488. Side upper leather, sampling, 342A.

Sidelobe, Mono.95. Sidelobes, low, investigation of concentric ring antennas, 6596.

Sieve, sub, sizes, grading of diamond powder, CS261-63.

techniques for obtaining small amounts of narrowly

classified particles, 6366. Sievert integral, ferroelectric switching, 5354. Sign of the Burgers vector, the direction of the force on a dislocation, 9070. Signal averaging filter, disclosure, TN287.

color recognition tests, correlation, 3379. degeneration in laser beams propagated through a turbulent atmosphere, J 69D4-498, 629 (1965).

lights, background and objectives of the U.S. Standard for the colors, 3149.

lights, tentative U.S. Standard for colors, H95;

4976. noise characteristics of a FM system, 5812. noise characteristics of some typical systems, 5658. noise ratio, output, in a frequency modulation and

a pulse-code modulation frequency-shift sys- tem, 4997; 6446. noise ratios, required, carrier power and band- width to achieve a given performance for multichannel radio communication systems,

5641. propagation of the ground wave electromagnetic; with particular reference to a pulse of nuclear

origin, 8962.

radio, propagation of the low-frequency, 4863.

section specifications 69-59, comments on revision of Association of American Railroads, 3160. simulation study, tunnel diode, 4395. 684
statistics, effect of linear and nonlinear processing, J 68D9-395, 953 (1964).

statistics, yesterday and today, J 68D9-391, 923

(1964). strength in the area around a transmitter's anti- pode, an experimental investigation, J 68D3-

350, 333 (1964). switching analysis, junction-transistor equivalent

circuit, 3929. VHF and UHF, characteristics observed on a long

knife-edge diffraction path, J 65D5-149, 437

(1961). WWV time, receiver, 3915. Signals emitted from nuclear explosions to study of long-range VLF propagation, the use of elec- tromagnetic, 9099. 18 kc/s, from NBA observed at Frankfurt, Ger- many, TN206-1.

18 kc/s, from NBA observed at Maui, Hawaii, normal phase variations of, TN206-2.

18 kc/s, from NBA observed at Boulder, Colorado,

U.S.A., normal phase variations, TN206-3. man-made one-hop whistles mode, at 18.6 kilo- cycles per second, variations in phase path,

5844. microwave, line-of-sight path at different frequencies, 5267.

radio, reflected by meteor trails, amplitude distri- bution, J 64D5-80, 449 (1960).

satellite radio, analysis of polarization rotation recordings, 3678A.

time and standard frequencies from NBS stations WWV and WWVH, M236.

transient electromagnetic, shielding of by a thin conducting sheet, J 64D5-94, 563 (1960). VLF, received over long paths during sunrise and

sunset, periodic fading, J 68D1-313, 27 (1964). VLF radio, international comparison of atomic frequency standards, 6810.

Significance, dimensionality in the spin wave theory

of ferromagnetism, TN327.

National Bureau of Standards in industrial progress, 1866A.

physical, of the Fulcher equation, 6828. transients and steady-state behavior in nonlinear

systems, 4377.

Signs, nuclear resonance coupling constants in saturated

aliphatic systems, 4910. prevention and treatment of frostbite, 6092.

relative, of nuclear spin couplings in, 'EPE^Fs,

8988A.

Silica and germania, vitreous, temperature of Young's

modulus, 3809.

fibrous, 4087.

fused, and aluminum, audiofrequency compliances

of prestressed quartz, 5931. fused, prestressed quartz, and aluminum, 4503.

gel, adsorption of methane, low temperatures, 4345.

gel, synthetic zeolite and charcoal, adsorption of methane and nitrogen on silica gel, 5732. glass (high), quartz, and vitreous silica, 6780. reinforced polymer, properties, dental restorations, 5600.

vitreous, elastic constants, 4973.

Silicate, binary, glasses in the study of alkali-aggre- gate reaction, 3448. gamma-dicalcium, crystal structure, 6673.

glasses, application of the Williams-Landel-Ferry

equation, 3139. glasses at ambient temperatures, kinetics of the transport of water, 3600.

glasses, effect of fluorides on infrared transmittance, 3193. Silico-phosphate cements, 4865.

Silicon carbide, electroless plated contacts, 3519. diamond, widths of transmission Kikuchi lines, 9140.

direct observation of charge storage in the surface

states, 5296.

p-type, 4917. precision density measurement, J 68A5-299, 529

(1964).

radiation detectors of the diffused P-N junction type to x-rays. II: Photodiode mode of operation, J 70A2-394, 181 (1966).

radiation detectors, response to x-rays, J 68A6-

318, 683 (1964). semiconductor radiation detectors at low temperatures, investigation of the anomaly in the re- sponse, 6813.

solar cells, photovoltaic effect produced by X- and gamma rays, J 64A4-52, 297 (1960).

steel, effects of tensile stress on the domain struc- ture in grain-oriented 3.25%, 5315. transition probabilities, 5094. wedge, kikuchi pattern, 6171. Silver alloy particles, dimensional changes of dental amalgam associated with strain release, 6694.

alloys of copper, 5322. anode, chloride content of the diffusion layer, 3467. atomic weight, absolute isotopic abundance ratio, 3412. atomic weight, absolute mass spectrometric deter- mination, 3413. cuprous halides, high pressure microscopy, J 68A1-

257, 97 (1964). bromide electrode, 4936.

chloride electrode, 3765. copper, molybdenum, tantalum, and gold at 662 kev,

total photoelectric cross sections, 3356A.

electroplated, 4699. higher oxides, 3230. perchloric acid coulometer, determination of the value of the faraday, J 64A5-63, 381 (1960).

single crystals in fused sodium chloride, 4958. sodium chloride, 4824; 6022.

tin alloys, direction of lattice deformation and re- covery in epsilon phase, J 68A3-279, 317

(1964).

Silver iodide, cold-worked, x-ray investigation of strain, J 68A4-283, 355 (1964). hexagonal silver iodine, 5802.

kinetics and mechanism of the low-cubic to hexagonal phase transformation, 6169.

particles exposed to light, 4614.

photolytic behavior, J 67A4-219, 301 (1963).

photolyzed, ice nucleation, 6123. polymorphism, 5576; 5578. pressure-induced trapping phenomenon, 6312. sodium iodide and silver iodide-potassium iodide, systems, J 64A5-64, 403 (1960). thermal expansion, 5821. x-ray determination of the Debye temperature,

5914.

Silver-silver, chloride electrode, activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt. % ) with and without added sodium choride,

potential, 5689. chloride electrode in methanol water solvents, standardization of analytical data obtained,

9036.

potential of, standard, chloride electrode in 10 and 15% mannitol at 25 deg, 5799. standard potential, chloride electrode and activity

coefficients of hydrochloric acid in aqueous methanol (33.4 wt.% ) with and without added sodium chloride at 25 deg, 5689. Simon liquefier, ideal yield of, 5397. Simple adiabatic demagnetization apparatus, 4288. apparatus for making 10^-100/i spheres of low melt- ing point metals, 3400. 685
arc device for spectral excitation in controlled at- mospheres, 9007. calibration technique for vibrating sample and coil magnetometers, 3944. calculus for all-dielectric interference niters of the Fabry-Perot type, 3766. centering jig and goniometer for punching or drill- ing spheres for structure models, 3401. cryopump, characteristics, 5669. derivation of the Boltzmann-Ehrenfest adiabatic

principle, 1486A.

derivation of the Faxen solution to the Lamm equation, 5886. device for adjusting dental interferometer, 6560. environmental chamber for rotating beam fatigue

testing machines, 5164. exponential decay in vibrational relaxation, 6606.

fluids, high-frequency elastic moduli, 6777.

fluids, thermal conductivity and viscosity, 6498;

9107.

liquid mixtures, statistical surface thermodynamics, 6401. low temperature specimen holder for the Morelco X-ray diffractometer, 3945. method for introducing non-thermal unsaturation

;

action of zinc dust and sodium iodide in N, N-dimenthyl-formamide on contiguous, secon- dary sulfonyloxy groups, 6580A. method for making stereoscopic drawings, 6561. method for measuring the amount of granular

materials in sulfur mortars, 6562. strain gauge-based load controller, 4911.

ultraviolet photometer, 3300. Simple method, examples relating, 6058.

Simplification of systems of units currently evolving

in the electrical field, 3301.

Simplified freezing point apparatus, 5887. theory of diffraction at an interface separating two

dielectrics, J 68D3-346, 303 (1964). Simulation, analog, of zone melting, J 65C2-60, 97

(1961) ; 5915. analog, transistor for use, 4798.

arterial street, what is needed next, 6535. computer, street traffic, TN119 (PB161620).

service, helicopter battery, TN244.

Simultaneous chemical and electrochemical oxidation Some electrochemical aspects of germanium

dissolution, 9016.

dielectric constant and volume measurements on

liquids at high pressures, 9008. equations, split Runge-Kutta method, J 64B3-32,

151 (1960). measurement of enthalpy, specific heat, and resis- tivity of electrical conductors at high temperatures, high-speed (milliseconds) method,

6546. measurement procedures, precision, 5584. observation of Jupiter on three frequencies, J

69D12-591, 1561 (1965). observation of radio star scintillations on different radio-frequencies, 3866. Sing-around velocimeter for measuring the speed of sound in the sea, 4440. Single crystal, 4653; 4654. growth from the melt suitable for substances with

a low melting point, equipment, J 69C3-199,

195 (1965).

rutile from 25 to 1000 °C, elastic compliances, J

68A6-316, 669 (1964).

studies, high pressure, of ice, 6779. surfaces in water, oxide films formed on copper,

III. Effect of light, 6468. Th02 at 25°C, elastic constants, 6016. x-ray diffraction at high pressures, J 69C4-208, 275 (1965). Single crystals, characterization of large, by high-volt- age X-ray Laue photographs, 5738.

large, high voltage Laue X-ray photography, 6117.

oriented, solution polishing, 9013.

solution, growth of oxalic acid: solvent effect on

crystal habit, 6106. Single decoding method for cyclic codes, a combinatorial problem, 5867. element extensions of matroids, J 69B1&2-133, 55

(1965). point and two-point loading for determining the strength of flat glass, 5962. polymer molecule with excluded-volume effects, on

the limiting shape of the distribution function

of lengths, 8916. pulse shock tube, comparative rate measurements,

5958. pulse shock tube, 4-methylcyclohexene and 4-vinyl- cyclohexene in; decyclohexene of cyclohexene,

6676. pulse shock tube, thermal decomposition of 2,3- dimethylbutane, 9108. scattered neutrons from an isotropic point source, TN63 (PB161564).

solid or molten fluoride, bromide, or iodide; theoretical electromotive forces for cells, 9110.

solid or molten oxide; theoretical electromotive

forces for cells, 9111. standard from several available standards, statistical construction, 6481. trace sweep adapter for transistor-curve tracers, 4289. Singly and in tandem, predicting the performance of tropospheric communication links, 5585. charged fragments, direct observation of decomposition multiply charged ions, 6698.

ionized rare earths, ionization energies, 6814. Singular values, invariance of symmetric functions,

5012. Singularity, irregular, of arbitrary rank, error bounds

for asymptotic solutions of second-order differ- ential equations, 6741. rank one, application to Whittaker functions, on

the asymptotic solutions of second-order dif- ferential equations, 8910. Sinusoidal accelerations at peak levels near that of gravity by "chatter" methods, 1310A.

accelerations, low-frequency, a dual centrifuge for generating. J 66C4-111, 357 (1962). square-wave targets, comparison of lens response

at several focal points, J 65A6-127, 465 (1961).

voltage, pulsed and CW, and current measurements, 6322.

Sites, weather resistance porcelain enamels exposed for

7 years at various, 6531; 6538. Siting criteria for HF communication centers, TN139

(PB161640).

Six oxygen multiplets, experimental transition probabilities, 6063. Size and shape distribution, particle, in a reinforced polymer, 6442. controlled pore, chromatography on glass, 6634. dependent spin lattice relaxation time, 5659. determination, nuclear, neutral-pion photoproduction, 8901. membrane potentials, effect of ion, 6021.

three, note on contaminated samples, J 70B2-175, 149 (1966).

Sizes and weights, molecular, 4782. women's hosiery, CS46-65. Sketch of recent world-wide developments. Measure- ment and standardization of LF to UHF elec- trical quantities, 6853. Skew-symmetric matrix, theorem on automorphs, 6571. Skewnesses, higher-order, turbulent field, 6783. Skull and the ear from hearine threshold data, 4891. Sky, danger, 676A.

integrated starlight, 3582A; 4126. 686
light of night: astronomical interplanetary and

geophysical, 6457.

night, light of, absolute photometry, TN214.

starlight, integrated, TN106 (PB161607). Sky wave propagation, evidence of the influence of long-term magnetic activity on medium fre- quency, 9017A.

propagation, LF, 3925. radio propagation at high frequencies, prediction

of ionospheric characteristics at CRPL, 6306.

signals near a coastline, reception, J 67D3-266, 325

(1963) . Slabs, fire endurance of small gypsum, 6757. Slack quenching, controlled, 3976. Slant paths in the stratosphere, 4698.

Slides, preparation of latern, 5587. Sliding short-circuit and an adjustable sliding termination, method of measuring the directivity of

a directional coupler, 6201. sparks and high-frequency discharges, excitation

of atomic and ionic spectra, J 68C4-169, 237

(1964) . termination, adjustable, and a sliding short-circuit, method of measuring the directivity of a

directional coupler, 6201. termination, adjustable coaxial, 5866.

Slipperiness, walkway, causes and measurement of, 3992.

Slope, mountain, and radiosonde observations, 6544.

Slot, axial, on a cylinder, a note on the radiation con- ductance, J 69D3-482, 447 (1965).

Slotted conducting plane in a plasma environment,

theory of radiation, TN223.

elliptic-cylinder antennae, calculated patterns, 3155. shere antenna immersed in a compressible plasma,

theory, J 68D10-412, 1127 (1964); J 68D10-

413, 1137 (1964). Slow charge transfer, TN185.

component, search, alpha ionization, 5655.

drift solar radio bursts: harmonic frequency

ratios, solar longitude dependence, and fre- quency draft rates, 4290.

electrons, elastic scattering of, by hydrogen atoms, measurement of the cross section, 5467.

electrons, excitation of molecular rotation, 6061;

6747. Small amounts of narrowly classified particles, sieve techniques for obtaining, 6366.

couplers, hydrogen retention system for pressure

calibration of microphones, 5393.

electric and magnetic antennas with cores of a

lossy dielectric, J 67D4-279, 445 (1963). grating spectrometers from 166 to 600 cm"1

, cali- bration, J 66A3-155, 223 (1962). gypsum slabs, first endurance, 6757. magnetic torrid antenna imbedded in a highly conducting half space, J 69D4-501, 659 (1965).

prolate spheroidal antenna in a dissipative medium,

J 69D7-535, 1003 (1965). sample problems, distribution theory, and occasional tables, TN238. Smear samples, alpha and beta particles, 5581. Smoke and fire, doors as barriers, BSS3.

Smoluchowski, Einstein, theory of light scattering,

validity, 6264.

_ Smooth earth diffraction calculations for horizontal

polarization, J 65D4-144, 397 (1961). surfaced built-up roofs, exposed to solar heating,

effect of insulation on the weathering, 5310. Snu9m-palladium Mossbauer sources, TN276.

Snakes, vapor, in solid argon, 5842. Snow and glacial ice, measured electrical properties, J 64D4-69, 357 (1960). SO radical, microwave spectrum, 6213. Soap, aliphatic, 4631.

Societies, scientific, 6310.

Society Meeting, Electrochemical, Toronto, Canada, May 5, 1964, presidential address, 6310. Sodium abundance, on the twilight sodium emission,

theoretical model, 6263.

chloride, added, 25 deg, standard potential of the

silver-silver chloride electrode and activity coefficients of hydrochloric acid in aqueous methanol (33.4 wt. %), 5689.

chloride, fused, 4958.

chloride, oxidation ginetics of silver, 6022.

chlorite, reactions with aldehydes and aldoses-l-t, J 68A3-276, 301 (1964).

chloride, silver, 4824.

content, high, cation-exchange between molten

salts and a special porcelain, 5942. emission, twilight, 6262; 6263. hydroxide solution, 50%, 4243.

iodide crystals, large anticoincidence, high-energy X-ray spectrometer, 3566A.

iodide, silver iodide-potassium iodide, systems silver

iodide, J 64A5-64, 403 (1960).

iodide, zinc dust in N, iV-dimenthylformamide on

contiguous, secondary sulfonyloxy groups, action of; a simple method for introducing non- thermal unsaturation, 6580A.

ions for use in molten salt systems, 3123.

lithium, anomalous NMR linewidth, 6248. naphthalene, homogeneous anionic polymerization, molecular weights of polystyrene, 5390.

nitrate, pure molten, transference numbers, 5827. perchlorate, lithium perchlorate, and ammonium

perchlorate, heats of formation, J 65A1-85, 66

(1961). potassium chlorate, heat of decomposition, J 69A1-

320, 1 (1965). succinate at 25 °C and potassium dihydrogen phosphate, buffer solutions, J 67A6-242, 573 (1963). tetrametaphosphate tetrahydrate, structure of the monoclinic form, 4378. tetrametaphosphate tetrahydrate, structure of tri- clinic form, 6484. trimetaphosphate, NaoPaOa, and the monohydrate,

NasPaOs • H20, the structures of anhydrous,

9095. Sodium-22, M260-9.

Soft X-ray, interpretation of maxima in absorption,

6154. microscopy of paper, 6367. spectroscopy, annotated bibliography, Mono.52.

Soil corrosion, 9009.

resistivity as related to underground corrosion and

cathodic protection, J 69C1-188, 71 (1965).

stack, how much should it carry? 463A.

vegetated surfaces to reflected and emitted radiation, characteristics, 6630.

Soils, results of NBS corrosion investigation in dis- turbed and undisturbed, 8999. Solar active regions, relation, central meridian passage

to ionospheric disturbance, 5635.

activity, 5660.

activity associated with polar cap absorption, 3403A; 4448; 4449. bursts and noise storms, low frequency, 3609. corona, inner, during June 1959, 3335A.

cosmic rays, 5089. cosmic rays by radio techniques, 4989.

cycle, ionospheric F region, 4568.

cycle, peak, total electron content of the ionosphere

content at middle latitudes, 5806. data and geomagnetic, 5377; 6103. disturbances and radio communication forecasts, 4291. disturbances, effect, low-radio-frequency ionosphere

reflection process, 5532.

eclipse of 20 July 1963, radio studies of highlatitude ionosphere, J 69D2-463, 267 (1965). 687
eclipse, total, of July 20, 1963, D-region absorption

at 10 and 15 Mc/s, J 69D7-527, 939 (1965). furnace, metal oxides, 3432. geomagnetic activity, 5645. geomagnetic data, 3557; 4671. heating, effect of insulation on the weathering of smooth-surfaced built-up roofs, 5310. heating, radiactive cooling, and thermal movement —their effects on built-up roofing, TN231. NRL, Lyman-Alpha results, 3922. observatory, requirement, within the NBS, 5642.

particles, and interplanetary fields, 5661.

particles and the interplanetary magnetic field, 4862.

particles in interplanetary space, 4913. proton event, diffusive model for the initial phase,

5873. proton events, 4456. proton events, conjugate observations of: delayed

ionospheric changes during twilight, 6655.

radiation, effect, cooling load of stationary refrig- erated vehicles, laboratory study, 5439A.

radiation, infrared transmission of the atmosphere,

5410.

radiation, near infrared atmospheric transmission,

3659. radio bursts, slow drift, 4290. zenith angle and the annual variation in E-layer

ionization, dependence of critical frequency of the ionosphere £Mayer, 6680. Solar flare effect, TN306; 4531.

effects in the F region of the ionosphere, 4292; 4332; 4912.

effects in the ionosphere, TN326.

effects observed on long VLF paths during 1961, an atlas, TN210.

frequency and observing-time patterns, 9010.

ionization in the D region of the ionosphere, VLF

phase, 5849. September 28, 1961, 4717; 5119. Solar flares, dark filaments and their relation to 2800- Mc/s radio bursts, 6368. Doppler studies of the ionospheric effects, 5303. geomagnetic activity, 3218. ionospheric effects, 4605. short-wave fadeouts, and magnetic crochets, 4301. systematic errors in measures, 4714. Solar spectrum, 3867.

excitation of He I, 3830. international symposium, 6152. table 2935A to \8770A, 9066. UV, 4202. Solar wind, J 65D6-157, 537 (1961).

interaction with the magnetosphere, J 69D8-537,

1033 (1965).

pressure, shape of magnetosphere boundary shape,

6364. Solarizing commercial x-ray emulsion, rate dependence,

6333. Solder flux, nonspattering, 6228.

Sole leather, impregnated, dimensional stability, 3185. water penetration testing machine, 3912.

Solenoid, compensated, giving a uniform magnetic field over a large volume, J 69C1-185, 49 (1965).

Soles, leather, increase in mileage, 3576.

Solid argon, 4815. argon at 4°K and 20° K, carbon vapor, 4469. argon matrices, infrared absorption spectra of carbon suboxide and malononitrile, 4307. argon, vapor snakes, 5842. carbon dioxide solubility in liquid solvents at low

temperatures, thermodynamics, 9114.

Solid beta-oxygen, 4948.

coefficient of thermal expansion and Youner's modulus for a one-dimentional model, 5238. cylinder growing in a diffusion field, stability of the shape, 9034.

disk specimens, techniques for using air-gap method for precise determination of the di- electric constant and loss angle, 6423. formation, flowing cryogenic fluids, 5662. four-carbon olefins, hydrogen atom addition, 5392. H20 and D2 0, at low temperatures, thermal conductivity, 5819.

liquid bismuth, differences in characteristic electron energy-loss spectra, 6692.

liquid, gas-phase, photolysis of dimethylmercury,

the reactions of methyl radicals, 5787. materials by reaction with calcium carbide, deter- mining moisture, 6690. metallic samples for X-ray spectrochemical analysis, 4961. molten fluoride, bromide, or iodide; theoretical electromotive forces for cells, 9110. molten oxide, theoretical electromotive forces for

cells, 9111. nitrogen, thermal conductivity, 5058. phase behavior of the normal paraffins, analysis, J 66A3-158, 241 (1962). phase, direct and inert-gas-sensitized radiolysis and

photolysis of methane, 6696. phase photolysis of 4-methyl-2-hexanone and sec- butyl acetate, 4711.

scintillation counting of H

3 and C" in paper chro- matograms, 3302.

solutions, ABO.i-type rare earth borate, polymorphism, 6300.

solutions, ilmenite hematite, magnetic properties, 5455; 6186. vapor equilibria of binary cryogenic systems, an

apparatus to determine, 5190. vapor equilibrium in the system hydrogen-methane,

9011.

Solid state, data; thermodynamic and transport properties, TN289.

detectors, for beta-ray spectroscopy below 4.2 °K,

5663. physics section 9, 5664. rare gases, 6477. reactions involving oxides of trivalent cations, J 65A4-116, 345 (1961).

Solidified gases at 4° and 20°K, spectra of C2 , 9025. spectra of C3 , 9024.

Solids, characteristics energy losses of electrons, 5946.

classical diagram technique for calculating ther- mostatic properties; application to dielectric susceptibility of paraelectrics, 6635.

crystalline, plastic flow and fracture, Mono.59, p. 1. dense gases, solubility, TN316.

electron properties, definitions and formulas, 5333. energy loss of electrons, 6445. high pressure, studies of infrared absorption spectra, 3799.

ionic, impurity controlled properties, 5402; 6792.

liquid drops, note on particle velocity in collisions, J 64A6-71, 497 (1960). low temperatures, thermal radiation properties, 5822.

paraffinlike, dumbbell model for dielectric dispersion, 6545. polymeric, fracture processes, 6764.

structural, cryogenic testing, 4559.

technical, low temperatures, specific heats and enthalpies, Mono.21.

technical, low temperatures, thermal expansion. A

compilation from the literature, Mono.29. transport of matter, 6197.

Solubility, binder, wear of magnetic recording tape, 5810.

electrolyte, theory, recent contributions, 526A. helium in liquid hydrogen, 6369. hydrogen, cryogenic solvents at high pressures, thermodynamics, 6505. 688
liquid solvents at low temperatures, thermo- dynamics of solid carbon dioxide, 9114. product phenomena in hydroxyapatite — water

systems, 4293; 4914.

solids in dense gases, TN316.

water vapor in molten alumnia, 6478. Solute nuclear magnetic resonances in primary lead

alloys, 9012. Solution adsorption, J 66A6-186, 503 (1962). aqueous, and related isotope effects from 0 to 50

deg, dissociation of acetic acid-di in, 6705. aqueous cesium chloride, and hydrogen chloride, nature of the compound obtained from, 5776. aqueous, osmotic and activity coefficients of tetra- ethylammonium iodide in, at 25 deg, 5551. calorimetry of portland cement, zinc oxide as a standard substance, J 66A5-173, 381 (1962).

dilute, concentration dependence of sedimentation

coefficient of polystyrene, 6433A.

exact Faxen, for centrifugation when sedimentation depends linearly on concentration, 6057. fundamental, and Huygens' principle for decomposable differential operators, 9079. grown ADP crystals, preliminary studies on the

characterization, 8955. growth of oxalic acid single crystals from: solvent

effect on crystal habit, 6106.

heats, and oxidation of sulfur dioxide, 5760. nonlinear Lamm equation in the Faxen approxi- mation, J 70A1-383, 17 (1966). 25 °C, osmotic and activity coefficients of tris (hydroxymethyl) aminomethane and its hydrochloride in aqueous, 8929. polishing of oriented single crystals, 9013.

polyelectrolyte, calculations of the potential and

effective diffusion constant, 5221.

polyelectrolyte, effective diffusion constant, 5313. vacuum-ultraviolet photolysis of ethane in liquid- nitrogen, 9130.

Solutions, AB03 -type rare earth borate solid, poly- morphism, 6300.

acidic oxalate, optical investigations of film formation and removal of gold anodes, 6272. ammonium dihydrogen phosphate, in the saturation

region, electrolytic conductance, 5224. aqueous, of hydriodic acid from electromotive

force measurements of hydrogen-silver iodide

cells, thermodynamics, 6504. asymptotic, second-order differential equations having an irregular singularity of arbitrary rank,

error, bounds, 6741. asymptotic, second-order differential equations having an irregular singularity of rank one, with an application to Whittaker functions, 8910. behavior of aqueous suspensions, surface composition of hydroxylapatite, 6485. charge-transfer absorption spectra of NO in Kr

and Ch,OH, 5948. deuterium chloride in heavy water from 5 to 50 deg, thermodynamics, 6506.

elastic plate problems, error bounds in the point- wise approximation, J 67B3-99, 145 (1963). electroforming, 4592. equation *„

+

-*x + K; e* = 0 , J 67B4-106, 245 ( 1963 )

.

gas-stabilized arc source, 4643. hydrochloric acid in 50 wt. % methanol from 10 to 40 deg, standard electromotive force of the hydrogen-silver chloride cell and the thermodynamics, 6390.

idealized, for choking two-phase flow of hydrogen,

nitrogen, and oxygen, 5673. inorganic, deuterium isotope effect on glass trans- formation temperatures, 5289.

light scattering from dilute polymers, 6177.

numerical, convolution-hypernetted chain integral equation for the pair correlation function of a fluid, 5523; 5524. problems in classical elasticity, effect of error in measurement of elastic constants, J 67B3-100,

157 (1963). reference buffer, for pH measurements in 50%

methanol, 8987.

solid, ilmenite hematite, magnetic properties, 5455;

6186. Solvent effect on crystal habit: growth of oxalic acid

single crystals from solution, 6106.

effects in 50-percent methanol, J 69A3-345, 263

(1965).

interaction, statistical computation of cofiguration and free volume of a polymer, molecule, 5695. participation in the anionic polymerization of sty- rene, 6370.

salt effects and medium effects on indicator acid- base equilibria in methanol-water, 6356. Solvents, alcohol-water, 4709. alcohol-water, acids and bases, 6579. alcohol-water, interpretation of pH measurements,

5423.

15, 25, and 35°, acetal in water-acetone, kinetics of

the acid-catalyzed reactions, 5437.

15, 25, and 35°, kinetics of the acid-catalyzed hydrolysis of acetal in dimethyl sulfoxide-water,

6170. cryogenic, high pressures, thermodynamics of hy- drogen solubility, 6505.

differential dielectric apparatus for determining

water, 5295. good, effect of heterogeneity in molecular weight on

the sedimentation equilibrium second virial coefficient of polymers, 6251. methanol-water, interpretation of potentiometric

titrations of weak acids, 6155. low temperatures, thermodynamics of solid carbon

dioxide solubility in liquid, 9114. organic, acidity and basicity, 639A.

standarization of analytical data obtained with the

silver-silver chloride electrode in methanol

water, 9036. Spectrometry, determination of the K fluorescence yield of argon by proportional-counter, TN91 (PB161592). Sondheimer-Wilson-Kohler formula in platinum resist- ance thermometry, J 69C4-209, 283 (1965). Sorbitol-sodium chloride-water at 25 deg, isopiestic va- por pressure measurements of the ternary sys- tem, 5432. Sorption and expansion isotherms of reactive limestone aggregate, 4591.

Sorter, electro-magnetic, proposal, 3288B.

Sorting devices in postal tests, 3306. Sound absorption by areas of finite size, 4302. absorption coefficients, precision of reverberation chamber measurements, 4240. absorption in non-associated liquids, 4549. experimentation, some Canons, 3770.

fields, reverberent, interference patterns, 6809.

insulation of wall, floor, and door constructions, Mono.77.

ocean waves, 4873. pressure measurement, microphone diaphragm null method, 3642.

sea, speed, 4440.

speed, fluid parahydrogen, 9033.

speed, in the sea, transistorized velocimeter for measuring, 3357. transmission loss of some building constructions, 3307. underwater, measuring velocity, 1771A. 689
velocities using NMR techniques, ultrasonic deter- mination of crystalline resonances, 9124.

velocity, helium gas, 4465.

velocity measurements, absolute temperatures, 4990. Sounder, TN331.

frequency topside, program, 5023. ionograms, electron density profile analysis of topside, 6025.

satellite, alouette, spread-F observations, 6388.

satellite, first observations from the fixed frequency

topside; ionosphere explorer I satellite, 6161.

satellite, ionospheric topside, 5671.

satellite, NASA topside, 5362.

topside, ionospheric research, 9104. Sounding, topside, ionosphere, 5090.

tool for global ionosphere studies, 5826A. Sounds in the atmosphere, 4941; 4942. Source, circular disk, radiation field, J 65C4-78, 249

(1961).

data, dose fields from plane sources, 5304. function in a non-equilibrium atmosphere, 3308;

3868; 3869.

irregularities in the ionosphere, two-stream instability, 5833. leak controls, use of transistors, 5838. mass and energy and a model of the loop promi- nence mechanism, 6836. near reflectors, radiation impedance, 5613. photoneutron, absolute calibration of NBS, 5174. radiant energy, on bitumen oxidation, 6128.

radio, location of the irregularities responsible for ionospheric scintallation, 5770.

stable arc, high ultraviolet radiance, 6563. standardization, recent developments in neutron,

5631. technique, image, calculating reflection of gamma

rays or neutrons, 6593. Sources, CO60

, intensity and spectral distribution of

scattered radiation, 5764. correction factor for fast neutron reactions on sul- fur and oxygen in the manganous-sulfate-bath

calibration of neutron, 9063. information, standard reference materials, M260-4. immersed in compressible plasma media, radiation, 6326. intense resonance line, photochemical work in the vacuum ultraviolet region, 6141. intensity and spectral distribution of scattered radi- ation from Co60

, 9082. microwave noise, measurement of effective temperature, 6198. radiation, laboratory weathering of asphalts, comparison of xenon and carbon arcs, 6645.

stainless steel, observations of dislocation, 8904. standards, and detectors in radiation measurements, 6398; 9038. South Pole, study of auroral absorption events, 5889;

6565. Southern auroral zone, occurence of short-duration cos- mic noise absorption events, 5778. hemisphere, twilight sodium emission, 6262. pine plywood, CS259-63.

Soviet electron devices through June 1965, tabulation

of published data, TN265.

electrons in world markets, 2769. research in field electron and ion emission, 1955-

1956; an annotated bibliography, TN75 (PB161576).

research in field emission, 1960-1963; an annotated

bibliography, TN243.

Space age, new standards, 4192. analysis of radio signals, J 65D3-131, 293 (1961). between earth and ionosphere, resonance, J 65D5-

152, 465 (1961). earth and terrestrial stations, 4493.

experiments, atomic clocks, 3444. geomagnetic storms around the earth, 3558. groups, reduction, subgroups by homogeneous

strain, J 67A5-229, 395 (1963). interplanetary, solar particles, 4913. navigation, 5089A.

radiation hazard, 5089. radio communications, propagation problems, J 66- D4-202, 375 (1962).

research, recent developments, 3744. system earth terminals and terrestrial stations, TN180.

technology and cryogenics, 6668.

vehicle, electroacoustic waves excited by, in ionized atmosphere and its effect on radar return, J 69D2-459, 235 (1965).

vehicles, coatings, 3470. wave fadeouts in tropospheric propagation, TN88

(PB161589). Spaced aerials, and their application to direction-find- ing phase difference observations, J 65D3-123, 229 (1961). arrays, nonuniformly, method of synthesizing, 6603. ionosondes, lifetime and movement of artificially produced electron clouds, 5769. Spacing system, CIE (u, v, w) uniform, spectral tri- stimulus values, 6385. Spaces, occupied underground, finite cover using a digital computer, numerical analysis of thermal

environment, 6236. Spacetime coordinate systems, 6382. Spacewarn network, summary report on activities, 5716. Spark-gap flashover measurements for steeply rising voltage impulses, J 66C3-96, 197 (1962). Spark-ignition and ignition systems, bibliography, M251.

Sparkover, voltages, impulse, 200 cm sphere gap, 5674. Sparks, originality, 3870. planing damage in copper, TN321.

source mass spectrograph program, July 1964 to June 1965, TN286.

Spatial distribution of energy dissipated by fallout beta-rays, 3779. properties of the amplitude fading of continuous HF radio waves, J 68D12-435, 1309 (1964).

Special functions in the complex plane, error bounds

for asymptotic expansions, 6740.

issue on electromagnetic waves in the earth, 5586. porcelain of high sodium content, cation-exchange between molten salts, 5942. reference to the determination of uranium, highprecision coulometric titrations, 6778. shielded resistor for high-voltage d-c measurements, J 66C1-83, 19 (1962).

techniques, use in sugar analysis, 5680. types of partitioned matrices, J 65B1-41, 7 (1961).

Species, excited, crosslinking of polymers, 4558.

Specific heat, apparatus for determination of, of fluid hydrogen at low temperatures and high pressures, J 65C4-76, 231 (1961). constant volume of para-hydrogen at temperatures from 15 to 90°K and pressures to 340 atm,

5046. enthalpy, and resistivity of electrical conductors

at high temperatures, high-speed (milli-sec- onds) method for simultaneous measurement,

6546. saturated liquid para-hydrogen from 15 to 32°K,

5047.

Specific heats, enthalpies of technical solids at low

temperatures, Mono.21.

functions for the calculation of enthalpy, entropy and internal energy for real fluids using equations of state, 6093. 690
hydrogen to 350 atmospheres at temperatures

above 14 "K, apparatus for determination of pressure - density - temperature relations, J 65C4-76, 231 (1961).

Specification and color measurement, 3159.

definition of alignate impression materials, 9067. proposed, for impression material; synthetic rubberbase, 3730.

Specifications, American Dental Association, for dental

materials, 3420. commercial weighing and measuring devices, (cor- rected through 1961), H44, 2d ed. dental materials, 4476.

F.D.I., formulation, 5755.

plating, 5571. standards, plating, 4843. system, for the DYSEAC, 1159B. Specimen, holder, residual losses in dielectric, J 65C2-

61, 101 (1961). investigating the stress-corrosion cracking of metals at elevated temperatures, 4441. preparation, metallography, 4325A.

Specimens, aircraft beam, programmed maneuver-spec- trum fatigue test, 5598. Als03 electron microscope, jet thinning devices for preparation, 6168.

diffusely reflecting, avoiding errors from stray

radiation in measuring spectral emittance,

6610.

solid-disk, techniques for using air-gap method

for precise determination of the dielectric constant and loss angle, 6423. Spectra, absorption, diatomic molecules in liquid and

crystalline rare gases, 5901. absorption, magnesium and maganese atoms in

solid rare gas matrices, 3811A.

absorption, solid methane, ammonia, and ice in the vacuum ultraviolet, 3416. absorption, solid xenon, krypton, and argon in the vacuum ultraviolet, 3416A.

Spectra, acetylene-oxygen flame, 4050 group, 1184A.

active species, paramagnetic resonance, 3279. aged-irradiated polystyrenes, electron spin resonance, 5332.

arc, seventy elements, 3752; 4274. atomic, 5033; 5093. atomic, connection between the theories of colli- sions, 5530. atomic, rare earths, their presence in the sun, 5734. BrCn, vibration-rotation, 5123; 5854. G2 in solidified gases at 4° and 20° K, 9025.

G>12 H2 , C

,2 C13 H2 , and C213 H2 , high resolution infrared, 6114.

C, in solidified gases at 4° and 20° K, 9024. C1CN, microwave and infrared, 6799. complex atomic, repulsion of energy levels, 4278. computed, and line parameters for water vapor

bands at 2.7m., Mono.71. computed transmission, for 2.7 micron H2 0 band,

5254; 5255. copper and indium above aqueous solutions, glow

discharge, 3222. CW envelope, some implications of aircraft inter- ference patterns, J 67D4-276, 405 (1963).

effect of structure, emitted by solid nitrogen during

electron bombardment, 3510.

electron energy-loss, solid and liquid bismuth,

differences in characteristic, 6692. electron paramagnetic resonance, zinc-doped cop- per acetate monohydrate, 6733. emission, atomic oxygen-acetylene flames, effect of molecular oxygen, 4050. emission, N2 , 02 , and NO molecules trapped in solid matrices, 3527.

emitted from rare gas-oxygen solids during elec- tron bombardment, 3780. energy, and angular distributions of electrons transmitted through Sapphire (A12 03 ) foils, 6043. energy of nuclei in the 2s, Id shell, calculations, 5219. far ultraviolet absorption, rare gases, line profiles, 6831.

fluorine and proton NMR, of HBF2 , 6318. high-dispersion, Jupiter, 3566. high resolution, region from 2 to 6m 4682.

interpretation, 4204. interpretation of prominence, 5535.

iron group, non-linear effects, 5508. iron group, parameters a and /3, 4214.

line, temperature measurements, 4923. magnesium, zinc, cadmium, and mercury, 4686. matrix isolated Nif2 and NiCl2 , 9026. narrow-band, of low-energy X-radiation, 1411A.

neutral and singly ionized phosphorus, atomic en- ergy levels, 3144. neutron flux for physical and biological applications, measurement, H72. NO in Kr and Ch3 OH solutions, charge-transfer

absorption, 5948. photoionization, qualitative feature, 4197. prominence, interpretation, 4204; 4805. proton, of (d, p) reactions of heavy nuclei, form

and angular distribution of proton groups at about Q-0 Mev, 5364. quasi-equilibrium theory of mass, 5608. report of subcommittee Z)-atomic, 8991. second-order differential operators, 1099A.

selected, 5828.

solution absorption, of the (Pu02 ) ++ and (Np02 ) + ions. J 70A2-392, 165 (1966). some deuteroethanes, mass, J 65A2-89, 93 (1961).

Stellar, identification of Ga II lines, 4687.

twilight, near the equator, 3894. vacuum ultraviolet absorption, oxygen in liquid and crystalline argon and nitrogen, 6523. VLF, survey from Boulder, Colorado. Atlas of whistlers and VLF emissions. TN166 (PB181-

454). Spectra infrared, absorption, carbon suboxide and

malononitrile in solid argon matrices, 5407. absorption, 1-acetamido pyranoid derivatives and

reducing, acetylated pyranoses, J 65A1-81, 31

(1961).

absorption, solids at high pressure, 3799.

asphalts, some aspects of the changes caused by

photooxidation, J 68C2-157, 115 (1964). emission, gaseous B2 03 and B2 02 , 3579. ethane carbon-carbon distance obtained from, 3203. high resolution, molecular vib-rotors, the theory and interpretation, 5493. HCN from 2000 to 3600 cm"1

, 6130. NF, NCI, and NBr, 6131.

solid hydrocarbons at very low temperatures, 3581. structures and thermodynamics of gaseous LiO,

Li20, and Li2 02 , 5763.

ultraviolet, free radical NCN, 6850. Spectra mass, and appearance potentials of tetra- fluorohydrazene, 3624.

initial preparation and metastable transitions, 6137. metastable transitions in, methane and the deutero- methanes, 5475. metastable transitions of H2 S, HDS, and D2 S, 5459.

statistical theory, 4200; 4561.

Spectral, absorption coefficients of homogeneous materials in the infrared at elevated temperatures, 8954. 691
characteristics, dynamic, micropulsation pearls, 6711. density comparator, precision noise, J 66C4-108, 323 (1962).

distribution of typical daylight as a function of correlated color temperature, 6383; 9027. emittance, TN267.

emittance of diffusely reflecting specimens, avoid- ing errors from stray radiation in measuring,

6610.

excitation in controlled atmospheres, simple arc

device, 9007.

intensity, distribution of scattered radiation from Co60

, 5764; 9082.

irradiance, new standard, 5148. irradiance, standard for extremely low values,

6564.

line intensities of ^/-values in the first spectrum of copper, J 66A6-185, 497 (1962).

line intensities, tables, Mono.32, Pt. 1 and Mono.32, Pt. II. line positions and intensities for the carbon dioxide bands, TN332.

lines of seventy elements, experimental transition

probabilities. Derived from the NBS tables of spectral-line intensities, Mono.53.

lines, self-reversed, light source for producing, J

66A4-166, 321 (1962). measurement techniques in planetary radar, J

68D9-403, 1025 (1964). microwave tables, Mono.70, Vol. I and Mono.70,

Vol. II. properties of plants, 9028. radiance, standard for region of 0.25 to 2.6 microns, J 64A4-51, 291 (1960). radiant intensities of tungsten filament lamps,

400-700 mM, 3251.

reflectance, TN267.

reflectance, diffuse, effect of surface texture, 6715;

6716.

sensitivity response of thermoelectric (radiometric) detectors, some factors affecting, 9019.

strengths, 5828. study of a visible short-duration afterglow in nitrogen, 3309. study of active nitrogen flames exhibiting CN

"tail" bands, 6384. transmittance, recalibration of NBS glass standards, 6337. tristimulus values, 5116. tristimulus values for the CIE (u, v, w) uniform

spacing system, 6385. tristimulus values, variability, J 65A6-129, 475

(1961). Spectrochemical analysis: optical spectrometry, X-ray

fluorescence spectrometry, and electron probe

microanalysis techniques, TN272.

standard samples and related materials, 3786. suggested practices for establishing sampling and

sample preparation techniques, 6409. X-ray, 4961. x-ray, of materials : cement and dental alloys, 9145. Spectrochemical standards, NBS copper-base, methods

for the chemical analysis, TN260-7.

preparation of NBS copper-base, M260-2.

white cast iron, NBS, preparation, M260-1.

Spectrograph, f/6 Littrow grating, 4085A.

grating, utilizing commercial camera components,

large-aperature, 3240.

littrow, inexpensive f/6 grating, 3132. mirror, focal surfaces and slit curvature of Ebert and Ebert-Fastie spectrographs, J 68C4-165, 205 (1964).

shutter, mechanical, extremely short exposure

times, 3633.

spark source mass, program, TN286.

vacuum, combustion study, 903B. Spectrographic interferometer, J 68D7-377, 807 (1964).

plate comparator, electronic scanning microscopic, J 65C1-50, 1 (1961). Spectrographs, mirror, astigmatic illumination of plane

gratings and prisms, J 68C4-163, 195 (1964). mirror, general theory of focal surfaces and slit curvatures, J 68C4-164, 201 (1964). Spectrometer, Czerny-Turner, 6276.

drift-free Mossbauer, 6708. Ebert, 4953. Fabry-Perot, for high-resolution spectroscopy and

laser work, J 68C1-147, 1 (1964). far-infrared vacuum grating, J 67C3-131, 207

(1963). high-energy X-ray, using large anticoincidence so- dium iodide crystals, 3566A.

high-resolution, low-energy electron, 6115. mass, new radiofrequency, having high duty cycle, J 67C4-139, 283 (1963). mass, thorium phosphide, 5080. microwave, precision Zeeman modulation, 3720. observation of the products of ionic collision processes and ion decomposition in a linear, pulsed

time-of-flight mass, 8905.

pair, two-crystal scintillation, 6516. Spectrometric, absolute mass, determination of the atomic weight of silver, 3413. analysis of copper-base alloys, accuracy of solution X-ray, M260-5.

investigation, mass, high temperature reaction be- tween nickel and chlorine, 6189.

investigation, mass, nickel-bromine surface reaction, 6190.

investigation, mass, yttrium-chlorine surface reaction, 6191. mass, study of cyanogen and cyanoacetylenes, 4162. mass, study of thermal dissociation of N2 F4 , 4163. NBS, low-alloy steel standard, metallographic characterization, M260-3.

standards II, homogeneity characterization of NBS:

cartridge brass and low-alloy steel, M260-10.

Spectrometric study, mass, isotopic exchange rate of oxygen atoms with 02 , NO, and N02, 6192. photoionization, 6843. photoionization of acetylene and acetylene-ck, 6193. production of methylamine from azomethane, 6194. reaction of nitrogen atoms with ethylene, 6844. reactions of O atoms with NO and N02 , 6195. recombination of bromine and chlorine atoms on

Pyrex, 5460. Spectrometry, emission, 4901; 6037. mass, 3625; 4741; 4742; 6196.

optical, X-ray fluorescence spectrometry, and elec- tron probe microanalysis techniques, June 1964

to June 1965, TN272.

Spectrophotofluorometric studies of degraded cotton

cellulose, 4930. Spectrophotometer, Beckman infrared, effect of a he- lium atmosphere, 857A.

integrator systems of color measurement, glass

filters for checking performance, J 66A3-154,

203 (1962). Spectrophotometers, modified, spectroradiometry, 5681. Spectrophotometric atlas of the spectrum of CH from

3000 A to 5000 A, Mono.24. mass study of photoionization, 6845. method of measuring the Ferric ion yield in the ferrour sulfate domimeter, 4715. method, near infrared, for the determination of hydration numbers, J 68A6-310, 625 (1964). Spectrophotometric determination, bromine and hydro- gen bromide, 9029. hydroperoxide in diethyl ether, 4931. 692
determination of the ionization constant of di- methylpicric acid (2,4,6-trinitro-3,5-xylenol) in water at 2B°C, J 64A6-77, 531 (1960).

ionization constant of 2,4,6-trinitro-m-cresol in water at 25°C, J 64A6-78, 533 (1960).

rate of dissociation of tetrafiuorohydrazine behind

a shock wave, 9030. thermodynamic pK value of the picric acid in water at 25 °C, J 67A3-211, 241 (1963). Spectrophotometry, TN275.

infrared, 4694. quantitative infrared, heated cell, 3564. standards, J 67A6-243, 577 (1963).

ultraviolet, 5101. Spectroradiometry by means of modified spectrophotometers, 5681. Spectroscopic, absorption of NO in crystalline and

liquid krypton, 5682. applications of photographic emulsion mosaics,

3781.

data, fundamental, 6772.

excitation, 3804B.

investigations of fluorescence and chemiluminescence in gases, 6386. magnetic properties of neptunium hexafluoride, theory of, 3884. measurements, arc, N? oscillator strength, using an analog computer, 6231. observations of the stratosphere and mesosphere, 3781A.

standard samples of titanium and high-temperature alloys, 4303. temperature measurements in a shock tube using CN as a thermometric molecule, 3782.. Spectroscopicum internationale, colloquim, proceedings,

5596. Spectroscopy, absorption, some atomic reactions, 3769. annual observatory report from the NBS, 5919. annual report of the NBS, 6602. annual report for IAU commission 14, 4492. atomic, review, 5648. beta-ray spectroscopy, below 4.2°K solid state detectors, 5663. carbonyl compounds in photodegraded plastics, the use of visible and ultraviolet, 9100.

centennial, 3818.

dielectric of compressed gases, cavity resonators,

3156. emission, 3528; 5683; 6734.

flash-photolysis, matrices, 6071.

fluorine flame, 3768.

fluorine flames. I. Hydrogen-fluorine flame and the

vibration-rotation emission spectrum of HF,

4304. high temperature microwave: Alf and A1C1, 6781.

kinetic, and flash heating, observation of FeO in absorption, 6238. low-energy electron-impact, determination of elec- tronic energy levels, molecules, 5284. low temperature infrared, lattice frequencies and

rotational barriers for inorganic carbonates and nitrates, J 66A5-176, 407 (1962) magnetic resonance, 4739. micro-second range, rotating shutter for timeresolved, 9001. minutes for the meeting of Tokyo, Japan, of the

triple commission, 5491.

side-on arc, use of an analog computer, 6488.

soft X-ray, annotated bibliography, Mono.52.

transactions of the Joint Commission, 5093. Triple Commission, Minutes of the Meeting at the Ohio State University, Columbus, Ohio, June

12, 1963, 6215.

ultraviolet realm, 6486.

vibrational-rotational, 5124.

X-ray determination of minor constituents in lowalloy steels, J 65C1-57, 71 (1961). X-ray, lead in leaded steels by, 4573. Spectroscopy, identification of textile coatings, 3573.

infrared, determination of propylene in ethylene- propylene copolymers, 5286. oxidation rates of air-blown asphalts, 4575. recent advances, 4264. stratospheric moisture measurements, 5704; 9042. weak charge-transfer complexes, 6132. Spectroscopy, microwave, 6211. atomic frequency standards, 3645.

versatile stark waveguide, 6527. Spectrum, absorption, CF2 and its vibrational analysis, 3678. magnetic properties of osmium hexafluoride, 3960. Muscovite, alteration, KBr pellet preparation, 5185. "pink" afterglow of nitrogen in the vacuum ultraviolet, 6428.

solid oxygen, 3329. Spectrum, aluminum monofluoride, microwave, 5486.

analysis, low frequency variations of quartz oscil- lators, 5683. atomic carbon negative ion, 4947. atomic oxygen, microwave Zeeman, 3261. atmosphere, width of the microwave lines of oxy- gen and their relationship to the thermal noise

emission, 9139. band, analysis of mercury hydride, 4506. cerium, third, description and analysis, 6683. CF, emission, 6735. CF2 , infrared, 6134. CN, chemical and magnetic enhancement of per- turbed lines in the violet, 5231. CN, ultraviolet band, pressure dependence of rotationally perturbed lines, 3723. CH from 3000 A to 5000 A, spectrophotometric

atlas, Mono.24.

difluoromine, infrared, 5409. doubly ionized lanthanum (La m), 9031.

electron, paramagnetic resonance, of 6is-8-hydro- xyquinolate-copper (II) dihydrate, 6732.

electron paramagnetic resonance, iris-complexes of copper, 6443. emission, low pressure arc source, FeO molecule,

5136. emission, of NCO excited in condensed discharged N2 CO at 4.2°K, 3684. Er3+ in LaCls, 5684.

first, of ruthenium (Rul), low even configurations,

3243. K2 Re CI., 3783.

lines, 5094. mass, yttrium chloride vapor, 6846; 9085. matrix-isolated hydrogen chloride, 4902. matrix-isolation infrared, free radical CCO, 6848. matrix-isolation infrared, free radical NH2 , 6849. mercury hydride, hyperfine structure, 5395. Nd3+ in LaCl3 , 5685. neutral atomic bromine (Br I), J 67A6-238, 505

(1963). neutral germanium, correlation between observed wavelength shifts produced in electrodeless discharge tubes and predicted stark-effect

shifts, 5977. NH, infrared; infrared studies of the photolysis

of HN3 in inert and reactive matrices, 6136. OH, 18 cm, 6014.

optical absorption, carbon in solid argon, 4815. power, importance in precise frequence measurements, 3856. power, variation of a carrier envelope in tropo- spheric scatter propagation, 3344. praseodymium trichloride, 5809.

radio, efficient use, TN158.

693
radio noise from 50 to 100 cycles per second, measurements, J 64D4-76, 415 (1960).

radio, propagation and technical factors, 6315. ReFc, 3784. representation of mechanical response function,

4421.

rotational, hyperfine structure, 5006. SH, radio, 5621. singly ionized atomic iodine (I II), J 64A6-68, 443

(1960).

solar, excitation of He I, 3830.

solar, from 2635 to 2085A, 3867.

solar, international symposium, 6152. solar table 2935a to X8770A, 9066. stationary homogeneous and magnetohydrodynamic

turbulence, 9032. structure of gaseous A1»0, infrared, 6133. Tan, description and analysis, J 66A2-146, 111

(1962).

terrestrial radio noise at extremely low frequencies, J 65D6-162, 581 (1961).

tertiary butyl chloride, microwave, 5487.

thin target bremsstrahlung bounded by a forward

circular cone, 3310.

third, of gold (Aum), J 64A6-69, 481 (1960).

third, of praseodymium, 5198.

triply ionized praseodyminum, 6600.

ultraviolet, 5034.

ultraviolet solar, 4202.

vibration, of tetrachloridiborine, 823A.

vibrational fundamentals of CF»N2 from the ultraviolet absorption, 9131. Spectrum, infrared, 5123. absorption, of nitrous oxide (N^O) from 1830 cm-1 to 2270 cm"1

, J 68A1-255, 79 (1964).

acetylene, 4125.

acetylene-di, 4695. carbon tetrafluoride, 4696. dideuteroacetylene (C:;D2 ) , 4697. emission, gaseous HBO?, 3580. emission, HBr excited in an electric discharge,

6800. free radical C1CO, 6851. free radical NCN, 6802. HCO, 6135. hydrobromic acid, J 64A5-62, 377 (1960). structure of NF= radical, 4124.

ultraviolet, free radical FCO, 6852. Spectrum, microwave, aluminum monofluoride. 5486. barrier to internal rotation in methylsilyacetylene,

6869.

cis-difluoroethylene. Structures and dipole moments of fluoroethylenes, 4178. hydrazoic acid, quadrupole coupling constants, 5605. internal rotation of l-chloro-2-butyne, 3257. internal rotation of ethyl cyanide, 3258.

isobutylene, 4179. lithium chloride, 6212. methyldifluoroarsine, 4770. nonplanarity of cyanamide, 4769. normal propyl chloride, 5775. SO radical, 6213. structure, dipole moment, and nuclear quadrupole

effects in vinyl chloride, 3648. structure of difluoramine, 5485. structure of N?F.,, 3259.

tertiary butyl chloride, 5487.

trans-crotononitrile, 3646. trimethylarsine, 3260. Spectural structure of critical opalescence: binary mixture, J 69A6-373, 523 (1965). Speculation of terrestrial helium loss, 6553. Speed and spin on the laterial deflection (curve) of a

baseball, 3195A.

light, 5048.

processes involved in electroplating movement of

solute, attainment of steady state and formation of metal, 5049. sound in fluid parahydrogen, 9033. sound in the sea, transistorized velocimeter for measuring, 3357.

tensile test of paper, 3195. Sphere, calculations of the bistatic scattering cross

section, impedance boundary condition J 69D2-467, 299 (1965).

coated, high frequency scattering, J 66D5-222, 613

(1962). conducting, electromagnetic response, to a dipole

field, 3683. corrugated, resonant characteristics, J 67D-3-268, 347 (1963).

fluid, hard, approximations to the pair correlation

function, 5927. gap, impulse sparkover, voltages for a 200 cm,

5674. hard, relaxation, Rayleigh and Lorentz gas, 5540;

6259.

radially inhomogenous, electromagnetic scattering, 5325.

rotating, magnetically suspended, magnetic torques

of Coriolis effects, J 67D-5-285, 533 (1963). Spheres, microscopic, study of errors in the measurement, 6566. structure models, simple centering jig and gonio- meter for punching or drilling, 3401. Spherical alloys particles, properties of dental amalgam,

4864.

basis, 5092.

cylindrical, and plane shocks, strong blast waves,

4139. earth and concentric anisotropic ionosphere, com- ment on the mode theory of VI F radio propagation, 5242. earth and concentric shell, cavity resonances, 6625. earth, theory of mixed-path ground-wave propagation, J 65D4-145, 401 (1961). mirror Fabry-Perot resonators, 5686. radio waves, diffraction by a finitely conducting

spherical earth, J 66D1-177, 101 (1962). void in a compressible isotropic plasma, resonances,

6347. waves through an ionosphere containing anisotropic

irregularities, propagation, J 66D5-223, 621

(1962). Spherically stratified media, wave functions and potential functions, J 67D2-256, 199 (1963). Spheroidal method for satellite orbits, 5797.

potential, invariant properties of an oblate planet, J 70B1-165, 1 (1966). wave functions, AMS55.

Spheroids, oblate, ferrimagnetic resonance measurements, TN221.

Spherulitic crystallization of isotactic polypropylene from solution: On the evolution of monoclinic

spherulites dendritic chain-folded crystal precursors, J 70A1-385, 29 (1966).

crystallization with chain folds in polychlorotri- fluoroethylene, 4878. Spherulite growth, initiation: the case of con-current homogeneous and heterogeneous nucleation,

6804. Spin and speed on the laterial deflection (curve) of a

baseball, 3195A.

couplings in J H

n B10 F2, relative signs of nuclear, 8988A.

echo, nuclear resonance, study of Eulr>3 EuO, 6898.

electron, resonance studies of free radicals in irra- diated materials, 3200A.

nuclear, transitions in antiferromagnetic KMnF3 , ultrasonically induced, 6517.

orbit coupling constant of nitric oxide. Determina- 694
tion from fundamental and satellite band ori- gins, 6387.

orbit interaction, matrices of, in the electron configurations phi and p'd, J 69A5-361, 401 (1965). paramagnetism on superconductivity, 6797. resonance, electron, gamma-irradiated cellulose, 5331. resonance, electron, spectra of aged-irradiated polystyrenes, 5332. resonance of Mo6 * in rutile, electron, 6031. spin coupling constants, proton, 4892. spin relaxation formulae and experiments, 5995. wave coverage, wide, ellipsoids, ferromagnetic res- onance relaxation, 6068. waves, TN327; TN328.

Spin-lattice relaxation, cerous magnesium nitrate, 4305.

effects of finite lattice heat capacity, 6718. time, cupric sulfate pentahydrate. Influence of par- amagnetic resonance on the static susceptibility, 6796.

time, paramagnetic dispersions, 5798. time, size-dependent, 5659. times, technique, 9056. two rare earth double nitrates, 4932. Spindle, the stokes flow, 3871. Spinning goniometer automatic direction finding, design, J 65D3-125, 237 (1961).

particle in nonuniform fields, precession equation,

6303. Spins of light nuclei, empirical rules for predicting

ground-state, 6038. Spiral patterns in geophysics, 3785. Spirals on NiBr2 platelets, growth, 6107.

Split beam composite concrete sections, prestressed,

flexural behavior, 6758. Runge-Kutta method for simultaneous equations, J

64B3-32, 151 (1960). type residential air-to-air heat pumps, 4828.

Splitting, equivalent points in noncentrosymmetric

space groups into subsets under homogeneous

stress, J 69A5-368, 461 (1965).

hyperfine, lithium atom, calculations, 5220.

set of equivalent sites in centrosymmetric space groups into subsets under homogeneous stress, J 69A2-340, 193 (1965). Spoke-wheel magnetic field, propagation of plasma

waves, J 69D9-556, 1227 (1965). Spontaneous martensitic transformation in 18% Cr, 8% Ni steels, 5050. Sporadic E, correlations, motions into night and; iono- spheric winds, 6164. during the IGY, occurrence, 5030. equatorial slant, 4807. experimental work in the U. S., 4886. F-layer scatter at VHF in the Far East, observation, J 65D1-107, 93 (1961). F region scatter; peculiarities of the ionosphere

in the Far East, 3705.

ionization, auroral, J 66D5-218, 581 (1962).

ionospheric, 4718; 5027. ionospheric currents, interrelations, 4710A. Lunar tidal variations, 4737. magnetic equator, 4447. morphology, 4362. occurrence, 5029. propagation, note on a test of the equivalence theorem, J 64D4-67, 347 (1960). propagation with the 3 mu sec pulses, 4933.

reflection mechanism, 4889. structure in the light of radio measurements, TN87

(PB161588) ; 4457. temporal world-wide variations, 2800A.

1949-1959, variations in frequency of occurrence

of, TN117 (PB161618) ; 5118. VHF in the USA, 3310A.

Spot diagrams for the prediction of lens performance from design data, Mono.93.

Spread F, characteristics, high geomagnetic latitude, 5230. configurations appearing on equatorial ionograms,

4357.

echoes, radio star scintillations, 5622.

equatorial, TN145.

motions, equatorial, 4639; 5338. observations by the alouette topside sounder satellite, 6388. survey, TN82 (PB161583).

topside of the ionosphere, 4867.

S<i overhead current system, seasonal day-to-day changes

of the central positions, 3758. Square-wave and sinusoidal targets, comparison of lens response at several focal points, J 65A6-127,

465 (1961). Squares, least, meaning of "least," 6461. sums, subgroups of the modular group, 3802. Sr and Ca in the rat, comparative metabolism, 3161. Sr^/Sr86 ratios in Hawaiian lavas, 6389. SrTiOa and related oxide semiconductors, electronic en- ergy bands, 6033. polaron coupling constants, 8945. semiconducting, dependence of superconducting

transition temperature on carrier concentration, 6682. superconductivity in semiconducting, 6411. SSB and FM radio-telephone tests on a VHF iono- spheric-scatter link during multipath conditions, 3552. Stable arc source of high ultraviolet radiance, 6563. 6300 A auroral arcs in mid-latitudes, 5687.

Stability, bis (8-hydroxy-5-quinolyl) methane coordination polymers, 6502.

control, 8993. dynamic, frozen radicals, formal theory of the model, 3191. gage blocks of superior, 6096; 6097. long-term, measurement and definitions, 6013A.

plastic impression trays, 4306.

relations of dravite, 5688. residual thiosulfate in processed microfilm, J 67C1-

115, 15 (1963). shape of a solid cylinder growing in a diffusion

field, 9034.

shielding, collisionless plasma, connection between,

5258. short-term, measurement and definitions, 6013A.

superior, gage blocks: initial developments in materials and measurements, J 64C3-34, 175

(1960). surface-hardened steels, temporal dimensional, 9098.

synthesis, bismutotantalite, stibiotantalite and

chemically similar AB04 compounds, 5722. thermal, polymer property-structure studies, at NBS, 6299. thermoset plastics at high temperatures, 4307. traveling waves in lasers, 1035. two-phase annular flow in a vertical pipe, TN314.

Stabilization, emission, thermionic diode noise sources, TN160.

Stabilizer, klystron, ten kilocycle pound-type, 5730. Stack and drain pipe loads, 3311. Stacking fault energy to segration at stacking faults and to the occurrence of phase boundaries in F. C. C. binary alloys, 8988.

faults, dislocations in rutile crystals grown by

flame-fusion methods, 6701.

faults, occurrence of phase boundaries in F. C. C. binary alloys, relation of the stacking fault energy to segregation, 8988. Stacks, plumbing, capacities, 407A.

sanitary drainage systems for buildings, 'capacities, Mono.31.

Stainless steel, 4546. evidence for an electrochemical-mechanical stress corrosion fracture, 6746. 695
fuel ash contaminants, corrosion of type 310, 3168.

identification of metallurgical reactions and their

effect on the mechanical properties of 17-7 PH,

J 66C2-92, 113 (1962). low-temperature mechanical, 4992. observations of dislocation sources, 8904. standard weights, 3946; 4934. type 304, 4317; 5705. types 321 and 430, total hemispherical emittance

of coated and uncoated Inconel, J 66C3-102,

261 (1962).

Stainless steels, austenitic, low temperatures, 4740. some 300 series, anomalous decrease of the elastic moduli at very low temperatures, 6590. Standard cell, modified Weston, over long periods, 5971.

cells, saturated, oil baths, 4799.

cells, their construction, maintenance, and characteristics, Mono.84.

electromotive force of the cell H2 ; Hbr(m), AgBr; Ag from 0 to 50°, 4936. electromotive force of the hydrogen-silver chloride

cell and the thermodynamics of solutions of hydrochloric acid in 50 wt. % methanol from

10 to 40 deg, 6390. emf, 4936. extremely low values of spectral irradiance, 6564. frequencies and time signals from NBS stations WWV and WWVH, M236.

frequency, ammonia beam maser, 4979. frequency and time services, M236.

hygrometer, NBS, Mono.73; 6542; 9087. interlaboratory noise, a waveguide noise-tube mount, 5897; 6530.

light, international, 3585; 4897. materials for rubber compounding, 3312. materials issued by the National Bureau of Standards, catalog and price list, M260. measurements of the pH of blood and other physiological media, J 65A3-110, 267 (1961). measuring and reporting physical properties of

optical materials, 8964.

national, reference data program. Background in- formation, TN194. new dry cell, major revisions, 6842. nuclear instrument modules, 6391. observer proposal, field trials of the 1959 CIE sup- plementary, 6069. Ottawa sand, test method for air-entainment, 3408A

portable rubidium-vapor frequency, TN235.

potential, Ag-AgCl electrode in 5% aqueous mannitol, 6392.

potential, silver-silver chloride electrode and activity coefficients of hydrochloric acid in aq- ueous methanol (33.4 wt.%) with and with- out added sodium chloride at 25 deg. 5689.

potential of the silver-silver chloride electrode in 10 and 15% mannitol at 25 deg, 5799.

radioactivity, calibration of the NBS tritiated- toluene, 9061. RF power transfer, 3391. reference data, TN289; TN290.

reference data program, national, TN194; 6220; NSRDS-NBS1.

resistor-noise test system, 3397; 4593.

safety, for non-medical X-ray and sealed gammaray sources. Part I. General, H93.

samples and related materials for spectrochemical

analysis, 3786. samples, report, 5639. samples, titanium and high-temperature alloys, spectroscopic, 4303. saturated, cells, controlled temperature oil baths, TN141.

single, several available standards, statistical construction, 6481.

spectral radiance for the region of 0.25 to 2.6 microns, J 64A4-51, 291 (1960).

stock sizes of machined tool steel bars (flats and

squares), R267-65. TAPPI, T414 M-49, internal tearing resistance of paper, 4494; 5202; 5923.

test for determining alkali resistance of porcelain enamels, 6393.

tests for electrical properties, 4937. thallium beam frequency, experimental evaluation,

5347. thermal-neutron flux density of the NBS, intercomparisons, 5417. thermal neutron flux, NBS, recalibration, 3940. trimming pattern for domestic cattlehides, CS268-

65. tritiated water, recalibration of the NBS, 5884. U3 08 , M260-8. United States, for the colors of signal lights, H95;

4976.

values, revised, pH measurements from 0 to 95 °C, J 66A2-150, 179 (1962).

volt box, method for calibrating, J 67C1-114, 1 (1963). weights, stainless steel, 3946; 4934. working humidity, pneumatic bridge hygrometer,

6555. X-ray diffraction powder patterns, C539, Vol. 10; Mono.25, Sect. 1 to 4. Standard reference materials: accuracy of solution X-ray spectrometric analysis

of copper-base alloys, M260-5.

analysis of uranium concentrates at the National Bureau of Standards, M260-8.

catalog and price list of standard materials is- sued by the National Bureau of Standards, M260.

half lives of materials used in the preparation of standard reference materials of nineteen radioactive nuclides issued by the National Bureau

of Standards, M260-9. homogeneity characterization of NBS spectro- metric standards II: cartridge brass and lowalloy steel, M260-10.

metallographic characterization of an NBS spec- trometric low-alloy steel standard, M260-3. methods for the chemical analysis of NBS copper- base spectrochemical standards, M260-2;

M260-7. methods for the chemical analysis of white cast

iron standards, M260-6.

preparation of NBS copper-base spectrochemical

standards, M260-2; M260-7.

preparation of NBS white cast iron spectro- chemical standards, M260-1.

sources of information, M260-4.

Standardization, M276.

activities in the United States, M230.

analytical data obtained with the silver-silver chloride electrode in methanol water solvents, 9036.

definitions for Hall effect devices, 6394. dental materials and therapeutic agents, work,

composition and interrelation of international and national organization, 6647. dimensions of packages for self-service selling, 6395.

electrical units, J 66C2-94, 137 (1962). electron-capturing radionuclides, 4576. flow measurement, 6072A.

gaseous radionuclides, recent work with compensated internal gas counters, 3745. glossmeter, and gloss standards, 6104. international—a new responsibility of the engineer,

5421. 696
international, U.S. participation, 5835.

iron compounds, TN276. measurement of dielectric samples, 4747. measurement of LF to UHF electrical quantities, 6853. national viewpoint, 5690. pH and related terminology, report, 3751.

plastics in the U.S., 9037. programming languages, 6479.

radioactivity, at the NBS, routine methods, 3754.

radioactivity, in the U.S., 3738. recent developments in neutron source, 5631. thermal emittance measurements, 4308; 4935. Standardized mechanical technic, early strength, flow and dimensional changes obtained on amalgam,

6003. Standards, activity, U.S., 3942; 4016. American, NBS—source, 4190.

analytical, trace elements in petroleum products, Mono.54. audio frequencies, design and performance of multirange current transformer, 9068.

basic, physical measurement, 3815. calibration of Q-meters 50 kHz to 45 MHz, J

68C4-170, 243 (1964). cesium beam frequency, evaluation, 3424.

chain, propagation of error, 3729.

challenge, 5051. comparison of atomic frequency, 6543. contact lenses, 5691. corporate level, in a decentralized company, M248,

p. 131. corporate measurements, real and abstract, M248,

p. 139. (current-ratio) at audio frequencies, international comparison, 6594. dental radiographic film, 5692. development by ASTM committee D-20 on plastics, 3789. dry cell, many changes reflected, 3623.

electrical, 5320.

electrical, laboratories, measurement agreement,

4471. electromotive force, 6397. evolution of control system, 9077. Federal test methods, 4086. foundation of industrial growth, 6399. four-terminal-pair networks as precision admittance and impedance, 6083. frequency, 4416. (frequency), cesium beam atomic time, 6626. future, 4939. gamma-ray exposure dose, intercomparisons of national roentgen, 5416.

gloss, and glossmeter standardization, 6104. heat capacity and thermal conductivity, 3791

high-energy, comparative measurements, 3906. high-energy, radiation, 3906. high temperature measurements: 1000-3000 deg

Centigrade, 6116.

hoisery, CS46-75. instruments and measurement techniques for x-rays, gamma rays, and neutrons, H-85.

intensity, high energy bremsstrahlung, comparison measurements, 3906.

international, for plastics, 3586.

international, progress, 2264A. key to success in engineering, 4311. known, measurement made by matching, 3250.

laboratories, electrical, achievement of measure- ment agreement, 5177.

laboratories, 1960, local, 3603.

laboratories, mathematical services, 4744. laboratory, a peak ac-dc voltage comparator, NBS

TN280.

long end, measurement, 3433. mass, ultramicroanalysis, 4985. metal volumetric, testing, Mono.62.

methods, radio measurement, URSI, report of U.S. Commission 1, J 64D6-96, 591 (1960). microwave power measurements, international intercomparison, 6150. microwave profession, 4938. neutron flux measurement and neutron dosimetry, 2776A.

noise sources, analysis of a microwave radiometer, J 67C2-127, 139 (1963). Pan American, of mutual benefit to Latin America and the U. S. ( 4212. pH determinations, 135A; 316A; 1010A. pH, establishment, fundamental approach, 362A.

philosophical influences on radiation protection, 8936.

physical, emittance and reflectance, 4839.

physical, statistical problems, 4315.

plastic pipe and fittings, 4309.

plastics, in government, 4231.

plastics in the U.S.A., 4310.

plastics—who establishes standards? 3790. preparation of NBS copper-base spectrochemical, M260-2. pure substance, preparation and evaluation, 4241. radiation and nuclear, TN283.

radiation protection, 3767.

radioactivity, international comparisons, 3584A.

radioactivity, nomenclature, 3667. radioactivity—present and future requirements, H86.

Ritz, Germanium vacuum ultraviolet, 4672. screw-thread for federal services, 1963 Suppl. to H28 (1957), Parts I, II, and III. secondary capacitance, higher frequencies, TN201.

several available, statistical construction of a sin- gle standard, 6481.

sources, and detectors in radiation measurements,

6398; 9038. space age, 4192.

specifications and plating, 4843.

steel medicine cabinets, CS267-65.

still a continuing project, 9039. temperature, calibration of, on the international

practical temperature scale of 1948, 4987.

testing, key to quality, 3788. thermal emittance, 5192. thermal radiation, and measurements, 5075. time, 3887A.

time, and frequency, 6091. titanium, hydrogen content, J 66A6-183, 483

(1962).

units of electrical measure, 6518. vinyl chloride plastics, 4940. viscometer calibrating liquids and capillary tube

viscometers, Mono.55. weights and measures of the United States. A

brief history, M247.

what's new in control, 6536. what standards can do, are our neighbors from

abroad aware of this, 6608. white cast iron, methods for the chemical analysis, M260-6.

voltmeter, new, one year trial, 5545. Standards, atomic, beam frequency, 3375; 3443; 3981. frequency, and clocks, 3445. frequency—microwave spectroscopy, 3645. frequency, via VLF radio signals, international comparison, 6810. Standards, measurement, 6856. attenuation, impendance and phase shift, 6396. plasma-physics and astrophysics, TN59 (PB161-

560). 697
Standards and measurements, accuracy and precision, 5901A.

attenuation, impedance, and phase shift, J 68D5-

360, 529 (1964). frequency and time interval, progress in the United

States during the last three years, J 64D6-96,

592 (1960). impedance, J 64D6-96, 598 (1960). microwave, 5488. microwave impedance, Mono.82. microwave surface impedance, skin depth, conductivity and Q, 3787.

noise, J 64D6-96, 601 (1960). radio and microwave materials at the NBS, M248,

p. 55. radio, microwaves, progress review from 1960, 8975. tomorrow's facilities, 6508. Standards National Bureau of, present program,

517A.

semicentennial, 263A. where measurement is the central theme, 5026. Standards national, atomic frequency NBS, 4189.

glass, NBS, of spectral transmittance, recalibration, J 67A6-243, 577 (1963) ; 6337.

national, contributions of government and private

agencies, 1660A.

reference, for high frequency impedance, 5042. roentgen measurement, comparison of, 3478. spectrochemical, NBS, white cast iron, preparation, M260-1.

time and frequency in the United States, 3658.

tritiated water, NBS, 6464. Stanford Radio Astronomy Institute, Stanford, Calif. J 68D5-364, 648 (1964). Star scintillations, radio, and spread-F echoes, 5622. Starch in paper, determination, 3177.

Starfish high-altitude nuclear explosion, geomagnetic

effect, 6252. Stark broadened Balmer lines, hydrogen, profiles, 5597. broadened oxygen lines in an arc plasma, shifts and widths, 5656. broadening of the Balmer line Ht, 4083.

effect, measurement of voltage, 5020.

effect shifts in the spectrum of neutral germanium,

correlation between observed wavelength shifts produced in electrodeless discharge tubes, 5977. energy levels, symmetric-top molecules, 5694. waveguide, versatile, microwave spectroscopy,

6527.

Starlight, integrated, over the sky, TN106 (PB161607) ; 3582A; 4126.

Stars, radio, scintillation, 4484.

State, He4

, three-body-bound, 5824. hydrogen, 2P, electrons of near-threshold energy,

excitation, 6447. oxygen, ground, with condensed olefins, reaction, 6336. science and technology, current programs in the U. S. Department of Commerce, 6674.

solid, rare gases, 6477.

specific heats, functions for the calculation of entyalpy, entropy and internal energy for real

fluids using equations, 6093. vapor, energy levels of Pr3+

, 6737.

States, arbitrary initial, generalized master equation,

6774. bound, Debye-Huckel potential, 5936. compound-atom, two-electron systems, 6648. corresponding, correlation and prediction of thermal conductivity of metals through the application of the principle, 6662.

14 N2 "O, rotational constants of excited vibrational, 6354.

optically forbidden, ionization continuum by elec- tron impact, 6748. two-electron excitation, helium, 9123. valence, and electrode potential, 9017.

Static cryogenic seals, recent developments in using

elastomers, 6338.

dielectric constant of rutile (TiOs), 4312. dynamic calibrations of pressure measuring instru- ments at NBS, 3792. elastomeric seals for cryogenic temperatures, design, 5983.

liquid nitrogen and liquid hydrogen, nucleation

characteristics, 6235.

seals at cryogenic temperatures, elastomers, 4054.

seals for cryogenic systems, 6350.

susceptibility, influence of paramagnetic resonance,

6796.

Station, observing, method for determination of the height and geographical position of an auroral

arc, 5140. WWV, phase control, 4894. Stationary homegeneous and magnetohydrodynamic

turbulence, spectrum, 9032. refrigerated vehicles, cooling load, laboratory study of effect of solar radiation, 5439A.

Stations, fluctuations in ionospheric absorption events, 6075. geomagnetically conjugate, cosmic noise absorption

events, 6663.

Statistic, Wilcoxon, with ties, exact and approximate

distributions, 4078.

Statistical analysis of experimental data, 6480. analysis of experiments, digital techniques, 2522A. approach to irreversible thermodynamics, anti- reciprocity and memory, 5922. aspects of the cement testing program, 3313.

calculations and Monte Carlo vs experiment: con- densation of tungsten on tungsten in atomic

detail, 6650.

calculations, use of general purpose coding sys- tems, 9126. comparison of the wearing characteristic of two

types of dollar notes, 4443. computation of configuration and free volume of a polymer molecule with solvent interaction, 5695. construction of a single standard from several available standards, 6481.

data, keypunch controls for string-punching, TN282. design, elementary, 4065. design of experiments, 9040.

distribution of the amplitude and phase of a multi- ply scattered field, J 66D3-191, 231 (1962). dynamics of simple cubic lattices, 3793; 4313. evaluation of inter-laboratory cement tests, 3314. inference for Rayleigh distributions, J 68D9-400, 1005 (1964).

interpretations, 5696.

literature, 1930 to 1957, selected bibliography, J

64B3-34, 175 (1960); J 65B1-46, 61 (1961);

J 66B1-69, 15 (1962); J 66B3-80, 109 (1962);

J 67B2-97, 91 (1963).

loads program, data processing for U. S. Air

Force—U. S. Navy—National Aeronautics and Space Administration, 3172. mechanical theory of transport processes, XII. Dense rigid sphere fluids, 3315. mechanics, equilibrium, potential distribution method, 6302. mechanics of irreversibility, 4314. mechanics, time-correlation functions and trans- port coefficients, 9116. methods in radar astronomy. Determination of surface roughness, J 67D6-305, 763 (1963). 698
methods in systems design, M267, Paper 5, p. 109. model for beta zirconium hydrides, 6400. models for component aging experiments, 3794. numerical analysis, a computer program, OMNITAB, H101. parameters related to the Nakagami-Rice probability distribution, J 68D4-358, 429 (1964). problems arising in the establishment of physical standards, 4315. properties of citations in the literature of physics, M269, p. 193. properties of pulsed oblique HF ionospheric transmissions, J 66D6-232, 721 (1962). quantum, mechanics of isotope effects, 4251. sampling design, 6357. studies of networks of scientific papers, M269,

p. 187. study of ionospheric drifts measured by the radio

star scintillation technique, 3947. study of lower atmospheric ionospheric coupling,

3948. surface thermodynamics of simple liquid mixtures, 6401.

tables, TN191.

thermodynamics of polymer chains in a lattice, application of the theory of absorbing Markov

chains, 5925. thermodynamics of the lattice model of a polymer

molecule, 6402. vocabulary construction and vocabulary control with optical coincidence, M269, p. 177.

Statistical association, methods for mechanized docu- mentation. Symposium proceedings, Washington 1964, M269. methods for simultaneous searching of multiple document collections, M269, p. 237. procedure for automatic document content analysis and retrieval, M269, p. 47. techniques for mechanized documentation, M269,

p. 3. Statistical engineering: accuracy and precision: evaluation and inter- pretation of analytical data, 3129. analysis of latin squares with a certain type

of row-column interaction, 3330. applications of statistics in post office auto- mation, 3978. Boscovich, Roger Joseph, and the combination

of observations, 4283a.

digital techniques in statistical analysis of experiments, 2522A.

discussion of the papers of Messrs. Satter- thwaite and Budne, 3189. elementary statistical design, 4065. evaluation of chemical analyses on two rocks, 3205. evaluation of micrometer and microscopical methods for measuring thickness of floor coverings, 4072. exact and approximate distributions for the Wilcoxon statistic with ties, 4078.

factorial experiments in life testing, 3209. fractional factorial experiment designs for

factors at two and three levels, AMS58.

fractional factorial experiment designs for fac- tors at two and three levels, AMS58. how to evaluate accuracy, 4107. interpreting preliminary measurements, 4130. measurement of the aging of rubber vulcanizates, 3249. measurements made by matching with known

standards, 3250. measuring process, 3338. measuring tire treadwear, indoor tester, 3131. paper test data from pendulum and inertialess

testers, 3277.

partial confounding in fractional replication, 4216. prediction of system behavior, 3271. problems in life testing: factorial experiments, 2700A.

problems of the experimenter, 3286. program of NBS, needs, 6465.

statistical aspects of the cement testing pro- gram, 3313.

statistical evaluation of interlaboratory cement

tests, 3314.

statistical problems arising in the establish- ment of physical standards, 4315. status report on ALGOL-60, 3949. study of ionospheric drifts measured by the radio star scintillation technique, 3947. systematic errors, 4345. systematic errors in physical constants, 4336.

theoretical problems of reliability measurement

and prediction, 3351. units for measuring variations in measurements, 903A. What is the best value? 4410.

Statistical theory, analysis of radio propagation data, J 66D5-217, 571 (1962). electromagnetic waves in a fluctuating medium (1)

,

J 67D3-265, 303 (1963). electromagnetic waves in a fluctuating medium

(II). Mathematical basis of the analogies to quantum field theory, Mono.79; J 69D11-582,

1503 (1965). mass spectra, 4561. mass spectra, classical approximation, 4200.

Statistics, chemical analysis, 5697. distribution of quantiles in samples from a bivariate population, J 64B3-31, 145 (1960). economic, errors, 4951. experimental, H91; 5352.

irreversible termination, homogeneous anionic poly- merization, 5698. mathematical, index to the distribution, J 65B1-45, 23 (1961). nonparametric and related topics, bibliography 658A. one or two order, optimum estimators of the pa- rameters of negative exponential distributions, 5550. post office automation, applications, 3978.

probability, miscellaneous studies: distribution theory, small-sample problems, and occasional

tables, TN238.

proper place, 6403. quantum and lasers, J 68D9-404, 1031 (1964). quantum, fully ionized gases, 8966. quantum, Wigner function and transport theory,

4929. radio wave diffracted by a random ionosphere, J 65D3-130, 275 (196i). random surfaces, J 68D9-405, 1035 (1964). regression analysis, J 68B2-119, 67 (1964). sampling distributions; normal distributions; non- normal distributions, TN191.

second virial coefficient of a real gas, suppression

at high temperature, 9051.

use, radar astronomy, some remarks, J 68D7-382,

849 (1964).

Status, current, graphic storage techniques: their potential application to library mechanization,

6438. frequency, and time control, 5699. gas lasers, J 68D5-365, 667 (1964).

linear relations among heats of transport, 9041.

present, our knowledge of atomic transition probabilities, 5588. project HAYSTAQ, present, 6309.

report. National standard reference data system, TN289. 699
report on ALGOL-60, 3949. sugar color and turbidity measurements, 5700. Steady magnetic fields, nuclear moment of Ni61 from

nuclear resonance studies, 5518. Steady-state calorimeter for measuring heat transfer through cryogenic insulation, 5880. head conduction in an exposed exterior column of rectangular cross section, J 69C2-194, 145

(1965). heat conduction in cylinders with multiple contin- uous line heat sources, J 67C2-125, 119 (1963). response of silicon radiation detectors of the dif- fused P-N junction type of X-rays, J 68A6-

318, 683 (1964); J 70A2-394, 181 (1966). two-intermediate enzyme reactions, 4565. Steam, air, argon, carbon dioxide, carbon monoxide,

hydrogen, nitrogen, and oxygen, tables of ther- modynamic and transport properties, 3806.

Steel and aluminum, study by polarization techniques

of the corrision rates underground, J 65C4-80, 271 (1961).

Steel, bars, machined tool, R267-65.

bars, rail, CS150-63. beams embedded in concrete, bond strength, 4959. coatings formed on by cathodic protection and their evaluation by polarization measurements, J 65C3-68, 171 (1961) ; 5237. 18Cr-8Ni, stress-induced martensitic transformations, 6406. current and potential relations for the cathodic

protection, 3491.

firing of vitreous coatings, investigation, 745A. ground coat enamels, nickel dip on the adherence, 951A.

iron, heat treatment and properties, Mono.18. low carbon, stress corrosion cracking, 3318. medicine cabinets, CS267-65.

mild, dynamic stress-strain curves for, using the tangent modulus procedure, 692A. NBS spectrometric low-alloy, standard, Metallo- graphic characterization, M260-3.

pilings in soils, corrosion, J 66C3-99, 223 (1962); Mono.58.

silicon, effects of tensile on the domain structure in grain-oriented 3.25%, 5315. specimens, plastically deformed, surfaces of sec- tions cut from, residual stresses and their re- laxation, J 67C2-123, 101 (1963).

spirals for reinforced concrete columns, R53-63. surface of reinforcing, evaluated by means of tensile bond specimens, width of cracks in concrete, 3371.

Steel, stainless, 4546. evidence for an electrochemical-mechanical stress corrosion fracture, 6746.

foil, mechanical properties, 4401.

fuel ash contaminants, corrosion of type 310, 3168. low-temperature mechanical, 4992. observations of dislocation sources, 8904. standard weights, 3946; 4934. type 304, 4317. vanadium compounds, type 310, 4321.

Steels, austenitic stainless, low temperatures, 4740. 18% Cr, 8% Ni, 5050.

die, 4943. four austenitic stainless, at temperatures between

300° and 20 °K, mechanical properties, 4173.

fully hardened, II. Gage blocks of superior stability, 6096. high strength, a study of embrittlement of, by

hydrogen isotopes. I. Testing of steel rings as specimens, a comparison of hydrogen and deu- terium embrittlement, and permeation studies.

II. A comparison of gas contents and hydrogen

or deuterium embrittlement resulting from

electroplating processes, 5166. high-strength, fatigue properties, 3541.

leaded, by X-ray spectroscopy 4573. 700

low-alloy, determination of minor constituents in, by X-ray spectroscopy, J 65C1-57, 71 (1961). low-carbon, studies of the stress-corrosion cracking, J 66C4-110, 347 (1962). 300 series stainless, anomalous decrease of the

elastic moduli at very low temperatures, 6590. surface-hardened, temporal dimensional stability, 9098. Steeply rising voltage impulses, spark-gap flashover measurements, J 66C3-96, 197 (1962).

Steering, impedance, hundred megapulse per second binary counter, 5155.

Stellar and galactic magnetism, 5701.

spectra, identification of Ga II lines, 4687. Step-function pressure calibrator, a liquid-medium,

5874. Stepless variable resistor for high currents, 4316. Stereoregularity in ionic polymerization of acenaphthylene, J 68A2-265, 165 (1964). Stereoscopic drawings, simple method for making, 6561.

Stibiotantalite, bismutotantalite, and chemically similar ABOi compounds, synthesis and stability, 5722. Stimulated Brillouin scattering in the off-axis resonator, 6404.

Brillouin scattering, optical heterodyne detection, 6271. Stochastic processes and Markov chains, selected bib- liography, 1930 to 1957, J 65B1-46, 61 (1961).

processes, polymer systems, 5679. theory of diffusion in a plasma across a magnetic

field, 6405. Stoichiometric rutile (Ti02 ), theory of electronic susceptibilities, 6496. Stoichiometry, TN273.

Stokes flow about a spindle, 3871.

flow about a torus, 3677. flow problem for a class of axially symmetric

bodies, 3872. law friction, hydrodynamic fluctuations, J 68B4-

126, 143 (1964). Stopcock or glass joint preventing capillary action, TN253, p. 4. Stopping powers for use with cavity chambers, H79.

Storage, graphic techniques, current status, their potential application to library mechanization,

6438. megajoule energy, cryogenic coil, 6667. Storm conditions, 4567. ionospheric, 6163. ionospheric, HF communication, J 67D1-239, 23

(1963).

ionospheric, morphology, 4783. magnetic, infrasonic pressure waves, 4701. magnetic micropulsation, 4915.

noise, low frequency solar bursts, 3609. Storms, geomagnetic, 4955. equatorial ionosphere variations, 5337. ionospheric variations, 5424. space around the earth, 3558. suggestion for improving forecasts, 5168. Straggling, energy loss, protons and mesons: tabulation

of the Vavilov distribution, 6041. Strain distributions resulting from rifle bullet impact,

9047.

finite, study of stress relaxation, 5167. gage accelerometers, linear, used in telemetry, general characteristics, TN150.

Strain, gage, readings, 3601. gage research at the NBS, 5702. gages at elevated temperatures, four methods of determining sensitivity, 6763. gages, high-temperature, development, Mono.26.

gages, resistance method for measuring the instability of at elevated temperatures, 5142. gauge-based load controller 4911. gauge calibration device for extreme temperatures,

3316.
homogeneous, reduction of space groups to sub- groups, J 67A5-229, 395 (1963).

release in complete dentures, 5703. release in the silver alloy particles, dimensional changes of dental amalgam associated, 6694.

resistance, gages, 4516. reversed plastic, and intragranular misorientation, J 65C1-55, 57 (1961). waves resulting from impact, velocities: stress- strain relationships in yarns subject to rapid impact loading, 3795. Strains of eight flour beetles, mortality patterns, 6874. Strange sounds in the atmosphere, 4941; 4942. Strapping and bottling, calibration of Bell-type provers,

6620.

Stratification, thermal, and self pressurization of a

fluid container, theoretical model for predicting, 6572.

Stratified conductor, numerical results for the surface impedance of, TN143 (PB161644).

echoing region at 150 km in the vicinity of the magnetic equator during daylight hours, 6055.

liquids, flow and stress near an interface, 3544. magnetoplasma, horizontally, propagation of vertically polarized electromagnetic waves, J 69D5-

504, 693 (1965). media, electromagnetic waves, 4623. medium, semi-finite, reflection of electromagnetic waves, J 68D11-422, 1215 (1964). plasma, continuously proportional to energy and

arbitrary magnetic induction, radio wave reflections, 5623. plasma, cylindrically, transverse propagation of electromagnetic waves, 6511. Stratosphere and mesophere, spectroscopic observations, 3781A.

infrared transmission along slant paths, 4698. Stratospheric moisture measurements, using infrared

spectroscopy, 5704; 9042. Stray radiation in measuring the spectral emittance of

diffusely reflecting specimens, 6610.

Street, arterial, simulation, 6535. Strength, aluminum alloy, effect of a fatigue crack on

the fatigue, 9073.

calibration techniques, field, at NBS, 6756. ceramic crystals, Mono.59, p. 79. compressive, dental amalgam, effect of rate of loading, time of trituration and test temperature,

5312.

early, flow and dimensional changes obtained on amalgam prepared with a standardized mechanical, 6003.

fingernails, 9043.

flat glass, comparison of single-point and two-point loading for determining, 5962. method of determining bond, 6584. N2+ oscillator, arc spectroscopic measurements

using an analog computer, 6231. properties of the fresh concrete", discussion of pa- per on predicting "compressive, 5994.

shear, beams without web reinforcement contain- ing deformed bars of different yield strength,

5654. synthetic single crystal sapphire and ruby as a

function of temperature and orientation, 3317. ten structural adhesives at temperatures down to -424 °F, 3873.

tensile, measuring, precision of methods, 5583. tongue-tearing, of woven fabrics, interlaboratory evaluation of procedures, 6147. Strengthening of hot-work in die steels, 4943. Strengths, continuum, determination of oscillator; inelastic electron scattering from rare gases, four selected alloys, effect of environment on the

fatigue, 9074. high field, implication for lasers of an aspect of

interference, 5912.

oscillator, absolute scale, 5173; 5175.

oscillator, for lines of Fe I between 2500 and

3200A, 8928. some O II and O III lines from measurements on

shock-heated plasmas, relative oscillator, 6344.

Stress, analysis of tape-wound magnet coils, J 69C4-

210, 287 (1965). corrosion cracking in copper tubing, 9121. cracking in low carbon steel, 3318. cracking of metals, 9044. cracking of metals at elevated temperatures, 4441. cracking of the AZ31B magnesium alloy, J 65C3-

67, 165 (1961). cracking, type 304 stainless steel at 455 to 615 F,

5705. fracture, electrochemical-mechanical, in a stainless

steel, 6746. functions for general continua, 3237. high strength cast aluminum alloys, 4944. induced martensitic transformations in 18Cr-8Ni

steel, 6406. relaxation, measurement of random chain scission, 6257.

studies, cracking of low-carbon steels, J 66C4-110, 347 (1962). Stress relaxation of 7-irradiated fluorocarbon elasto- mers, 9045.

relaxation, radiolytic, of an ethylene-propylene co- polymer, 8978.

relaxation, study, with finite strain, 5167. rupture tests at 1350°F on type 304 stainless steel, 4317.

tensile, domain structure in grain-oriented 3.25%

silicon steel, 5315.

Stress-strain, curves for mild steel using the tangent modulus procedure, 692A.

properties of textile yarns subjected to rifle bullet impact, 9046.

relations, elastic, perfect elastic fluids, 6722. relationships in yarns subjected to rapid impact

loading, 3795; 4318; 4945; 4946; 9047. Stressed biaxially oriented nylon, visual observations, polymer compression, 6298. Stressing, fatigue, gas evolution from metal surfaces

during, 5372. Stresses in a plate uniformly compressed over portions

of its two opposite edges, J 66C4-109, 331

(1962). String language for symbol manipulation based on ALGOL 60, 4444. punching of statistical data, keypunch controls, TN282.

transformations, axiomatic language, axle, 6611. Stroboscopic method, extension, 4800. method to a nonlinear equation of nonautonomous

character, 4497. Strong blast waves, energy parameter B, TN155.

blast waves in spherical, cylindrical and plane

shocks, 4319. Strontium-85, -89, -90, M260-9.

calcium, comparative fixation, by synthetic hydroxyapatite, 3477.

lead, and barium, tetragermanates, formula type AB4 0!> , J 65A3-96, 127 (1961).

titanate (SrTi03 ), elastic constants of a cubic

crystal from velocity measurements in a single arbitrary direction, a method for determining, J 67A2-205, 193 (1963).

titanate, electronic energy bands, 6032.

titanate, electronic transport, 6035. Structural beams, analytical study of creep deflection, 3430. changes in irradiated plastics films. 3319.

internal state variables in the description of scalar rate processes in fluids, 4320.

joints, creep, 2348A.

joints under cyclic loads and temperatures, investi- gations of creep behavior, 3238. 701
solids, cryogenic testing 4559. thermal expansions in alkali silicate binary glasses, 3796.

transition of ribonuclease in solution, effect of lithium bromide on the structural transition, 4349. Structure, carbon suboxide, 6483. carbon suboxide, high-resolution infrared determination, 6113. cyclohexane-l,3-diols, 4982. developed grains, number, and sensitometric properties, 6333. difluoramine, microwave spectrum, 5485. doubly ionized praseodymium, nuclear magnetic moment of Pr141 from the hyperfine, 6894 ; 6895. electrodeposited lead dendrites, 9048.

electrolytic solutions, 3348A.

gaseous copper II nitrate as determined by electron

diffraction, 5800; 5801. hexagonal silver iodide, 5802. H02 , 4487. infrapolynomials with prescribed coefficients, 6260. infrared spectrum of gaseous A12 0, 6133.

ionization limit in inelastic electron scattering in the rare gases, 5707. isobutane molecule: change of dipole moment on

isotopic substitution, 3798. lithium dipotassium trimetaphosphate monohydrate,

5052. lower F region, some results of a new method for obtaining ionospheric N (h) profiles, 6380. machine glossary the method for mechanical translation used by the NBS group, 5774. molecular, chloroform, 5021. molecular, propylene, 4182. monoclinic form of sodium tetrametaphosphate

tetrahydrate, 4378.

O, O'-diethyl methylphosphonothioate and conjugative properties of the P=S bond, 3874. photodetachment spectrum of the atomic carbon

negative ion, 4947. physics of the upper atmosphere, 6482. regions of cornonal-line emission, 5053. shielding against fallout radiation from nuclear weapons, Mono.42. subgroups of the modular group, 5054. structure imperfections of solid /3-oxygen, 4948.

studies, polymer property, at NBS; thermal stability, 6299. sulfurous esters, 3797. thermal emissions at radio frequencies, potential use of passing probing of atmospheric, 8950.

triclinic form of sodium tetrametaphosphate tetra- hydrate, 6484. trimethylaminetrimethylboron, 3693. tropospheric temperature, ground-based measure- ment of oxygen emission, method for determination, 6549. variations, quiet ionosphere, temperature control, 5725. vibrational-rotational bands of an asymmetric rotor, 4379. Structure, crystal, barium tetraborate, BaO2B2 03 , 9065.

1-ethyl decaborane, 6436. gamma-dicalcium silicate, 6673. molecular, C1B20H22, bis (o-dodecarcarborane) , 6669. molecular, iodopentaborance-9, 9064. NaB(OH)4»2H=0, the direct determination, 3745. Structure, hyperfine, and isotope shifts, 2537-A line of mercury by a new interferometric method,

5394. Hgiro *, Hg105 and Hg105 * by Zeeman level crossings, 6786.

rotational spectrum, 5006. spectrum of mercury hydride, 5395. Structured files, TN285.

Structures, anhydrous sodium trimetaphosphate, 702

Na^PaOo, and the monohydrate, NatPaOo'HjO,

9095.

borates, carbonates, and nitrates, infrared studies, of aragonite, calcite, and vaterite type, J 65A3-

100, 173 (1961). chemical, and associated information, digital handling, 6693. chemical, information representations, transfor- mation, and calculations, 6633. correlation factors for impurity diffusion—Bcc, diamond, and Fee, 5978. dipole moments of fluoroethylenes, 4178. method for evaluating protection afforded against

fallout radiation, 3638. millimeter wavelength resonant, 5490. protection afforded by engineering methods against

fallout radiation, Mono.76.

refrigerated, heat sink method for measuring the

cooling loads, 3229. resonant, millimeter, wavelength, 4775. tapered inlet, for pipe culverts, 6422. Structures and thermodynamics, gaseous LiO, Li2 0, and

Li202, infrared spectra, 5763. Struve functions and related functions, AMS55.

samples from a rectangular universe, distribution, 5998. Student's t-test, graphs for determining power, J 66B2-

74, 59 (1962).

Studies, acids, bases, and salts by EMF, conductance,

optical and kinetic methods, TN271.

air-to-air residential heat pumps for USAF, 3320. alouette ionic magnetic-field and plasma studies, 5908.

alouette observations at the CRPL, 6406A.

characterization of solution-grown ADP crystals, 8955. chemistry of free radicals, low temperature, infrared, 6183. constitution of portland cement clinker, 556A.

crystallinity, infrared, and creep; ethylene-propylene copolymers, 6052. determination of spectral absorption coefficients of homogeneous materials in the infrared at ele- vated temperatures, 8954.

diffraction, high-pressure X-ray, 5388.

electron impact, of aromatic hydrocarbons, 6027;

6028.

electron microscopy, surfaces of magnetic record- ing media, 5329. elevated temperature corrosion of type 310 stainless steel by vanadium compounds, 4321. environmental effects, evidence regarding the mechanism of fatigue, 5343. environmental factors in a family-size underground

shelter, 4322. errors in economic statistics, 4951. evaporation of condensates containing nitrogen atoms, 3321. flame-spraying of aluminum oxide, 3801. geomagnetic micropulsation frequency range, 5710. helium ion loss processes of interest in the iono- sphere, 6173. high pressure single crystal, of ice, 6779. infrared absorption spectra of solids at high pressure, 3799. infrared, photolysis of HN3 in inert and reactive matrices; infrared spectrum of NH, 6136. ionosonde, of chemical released in the ionosphere,

6160. ionosphere, global, topside sounding as a tool, 5826A. low temperature distillation of hydrogen isotopes, 4323. microwave, butadiene derivatives, 6214. natural electric and magnetic fields, J 64D4-73, 405 (1960). NBS of the platinum-6%, rhodium vs. platinum- 30% rhodium thermocouple, 5708.
NMR, asymmetric ethanic rotators: 1,2-disubsti- tuted propanes, 6223. non-equilibrium rate processes. V. The relaxation

of moments derived from a master equation,

4950. nuclear resonance steady external magnetic fields, nuclear moment of Nici

, 5518.

optical, formation and breakdown of passive films formed on iron single crystals surfaces in in- organic inhibitor solutions, 5548.

optical, high pressures, 6273. particle-impact process for applying ceramic and

cement coatings, 4324. phase equilibria, mixed systems of rare earth and

other oxides, 6283. photodissociation of molecular ions, 6407.

pitfalls in thermal emission, 5566. polymer property-structure, at NBS; thermal stability, 6299. propagation at 9300 Mc, with-in-horizon, 5711. radio refractometry and its potential for humidity,

8973.

reliability and validity of factory-analytically de- rived classification categories, M269, p. 245.

scientific and engineering manpower, 5709. sedimentation, application of a high-intensity, multiset Raleigh interferometer, 6604.

signal-to-noise characteristics, theoretical, of a FM

system, 5812.

solar flare effects and other ionospheric disturb- ances with a high frequency Doppler tech- nique, TN306.

stress-corrosion cracking of low-carbon steels, J

66C4-110, 347 (1962). sudden commencements of geomagnetic storms

using IGY data from United States stations, 3800. thicknesses of adsorbed glass finishes by ellipsometry, 6408. thin oxide films on copper crystals with an ellip- someter, M256, p. 201. tungsten-rhenium thermocouple to 2000 deg C, J

67C4-146, 337 (1963) ; 5712. Study, anthracene fluorescence excited by the ruby

giant pulse laser, 5165. auroral absorption events at the south pole, 5889;

6565. auroral coruscations, 3950. cadmium borate glass, X-ray, 5863. carbon monoxide on tantalum, a field emission, 5133; 5358. chemical and physical properties of magnetic re- cording tape, 4452. chemical reactions in kilning bone char, 3951. condensing-vacuum insulation, 3403. decompositions of the parent ion and neutral excited pentane molecule. Gas-phase radiolysis of n-pentane, 6100. double-binary keyboard as a link in the machinesorting of mail, address encoding, 5903.

effect of large aperture on the performance of an

Ebert spectrometer, 4953.

electronically excited hydroxyl radicals in the H + 03 atomic flame, 4445. embrittlement of high strength steels by hydrogen

isotopes. I. Testing of steel rings as speci- mens, a comparison of hydrogen and deterium

embrittlement, and permeation studies. II. A

comparison of gas contents and hydrogen or deuterium embrittlement resulting from elec- troplating processes, 5166. errors in the measurement of microscopic spheres,

6566. Eu153 in EuO, nuclear resonance spin-echo, 6898. experimental, backscattering of 5.3 meV alpha particles from platinum and monel metal, 6592. experimental, beta decav using the radiations from

oriented nuclei, TN93. (PB161594).

F> layer effects as with a doppler technique, 4446.

field emission, carbon monoxide on tantalium, 5133. fluorescence of cellulosic polymers, 3952.

gas-stabilized arc as an emission source for the measurement of oscillator strengths. Determination of some relative ^/-values for Fe 1, J

67A6-240, 561 (1963). geomagnetic effects associated with auroral zone

electron precipitation observed by balloons, 5888. guiding mechanism of whistler radio waves, J

69D4-485, 493 (1965). gypsum plasters exposed to fire, J 66C4-113, 373

(1962). intermediates in the photolysis of HNCO and DNCO, low temperature infrared, 6184. 2-Mc/s ionospheric absorption measurements at high latitudes, 3405.

isotope effects in energy exchange and particle ex- change reactions, 5865. Knudsen's method of pressure division as a means

of calibrating vacuum gages, 4952. laboratory, effect of solar radiation on cooling load of stationary refrigerated vehicles, 5439A.

local geomagnetic influence on the [OI] 5577 night- glow emission at Fritz Peak, 3404. long-range yLF propagation, electromagnetic sig- nals emitted from nuclear explosions, 9099. lunar surface radio communication, Mono.85.

matrix-isolation, photolysis of cyanogen azide, 6850. matrix-isolation, reaction of CI atoms with CO,

6851.

matrix-isolation, reaction of F atoms with CO,

6852. meteorological-radio, 5159. methods for estimating loudness, 9049. nuclear resonance, of gallium-substituted yttrium

iron garnet, 6899. nuclear resonance, of hyperfine fields in nickel-rich nickel-cobalt alloys, 8900.

orifice flow characteristics of liquid nitrogen and

liquid hydrogen discharging into a vacuum,

5883. phenomenon of whistler echoes, J 69D3-478, 407

(1965).

photoionization, mass spectrophotometry, 6845. plasma configurations, index of refraction, 6521. polarization techniques of the corrosion rates of aluminum and steel underground for sixteen months, J 65C4-80, 271 (1961).

radio-meteorological, 5159. radio wave scattering from sporadic E near the magnetic equator, 4447.

solar activity associated with polar cap absorption, 3403A; 4448; 4449.

spectral, active nitrogen flames exhibiting CN

"tail" bands, 6384.

stability of high temperature platinum resistance thermometers, 4450.

stress relaxation with finite strain, 5167.

theoretical, Martian and Cytherian ionospheres,

5893.

theoretical the Martian ionosphere, 5170. thermodynamic, thorium phosphide with a mass

spectrometer, 5080. thermogravimetric, transition metal-Schiff base co- ordination polymers, 9115.

transitions in polymers, utility of Tait equation

relating volume and pressure, 6522. two water resistance testers for shoe upper leather, 3406. "valley problem" with a ray tracing program, 4954. variation of the surface electrical resistance of

lead iodide films with RH at room temperature,

6567.

vitrious borium boroscilicate, radial distribution, 5609. 703
waves supported by a warm plasma slab, J 69D5-

508, 729 (1965).

x-ray, isothermal thickening of lamellae in bulk

polyethylene at the crystallization temperature,

9146. Study, mass spectrometric, isotopic exchange rate of oxygen atoms with 02 , NO, and NO=, 6192. photoionization, 6843. photoionization of acetylene and acetylene-ek, 6193. production of methylamine from azomethane, 6194. reaction of nitrogen atoms with ethylene, 6844. reactions of O atoms with NO and N02 , 6195. recombination of bromine and chlorine atoms on

Pyrex, 5460. studying, cooling capacity of air-conditioning units, condensate collection as a measuring technique, 5256A.

tidal variations, Lunar, D region of the ionosphere by means of a very-low-frequency phase observations, 5713. Styrene divinylbenzene and trivinylbenzene, thermal

stability of polydivinylbenzene and of copoly- mers, J 65A3-108, 243 (1961). radiation in induced polymerization, halobenzenes

as sensitizers, 3562. solvent participation in the anionic polymerization,

6370.

SU.i, comparison of experimental reaction cross sections with various relations, 5961.

prediction, new, with experiment, comparison, 5960. symmetry group containing both the Lorentz Group,

5892. symmetry, S-wave hyperon-nucleon interactions, 6415. SU(6) Clebsch-Gordan coefficients for the product 35X56, 9052. SU(12) w photoproduction and meson-baryon scattering amplitudes, 9053. SU(12), W-spin and B-spin subgroups, 9103; 9143. Subauroral latitudes, relativistic electron precipitation

into the mesosphere, 8989. region as a function of magnetic activity [OI] 557

intensity, 3840. Sub-carrier technique of measuring microwave attenuation, 4427. technique, modulated, attenuation measurement,

further analysis, 6094. Subcommittee, report D-atomic spectra, 8991. Sub-excitation energies, anomalous transmission of rare gases for electrons, 5920. Subgraphs, degree constrained, J 68B1-112, 27 (1964). Subgroups, congruence, normal, of the modular group,

5510.

free, and normal subgroups of the modular group,

6090. modular group, 5054; 5513. modular group and sums of squares, 3802. normal, free subgroups of the modular group, 6090. normal, genus one of the modular group, complete

description, 5869. normal, modular group which are not congruence

subgroups, 6982. SU(12), the W-spin and B-spin, 9103; 9143. Subject content in scientific technical prose, M269, p. 225. Suboxide, carbon, and malononitrile, solid argon matrices, infrared absorption spectra, 5407. carbon, high-resolution infrared determination of the structure, 6113. carbon, structure, 6483. Subsidence, climatology of elevated super-refractive lay- ers arising from atmospheric, 5949. Subsonic flows, SEAC computations, 3778. Substance, hide, leather by the Kjedahl method, deter- mination, 6685. Substituted ethylenediamines, symmetrically, complex

formation between manganese ( II) , nickel(II) and zinc (II) ions, 5252. 704

gallium, yttrium iron garnet, nuclear magnetic

resonances of 69 Ga and n

Ga, 6234. Substitution, aluminum for iron in dicalcium ferrite, crystallographic changes, 5271. impurities in metals, thermal diffusion, 9109. Substoichiometric radioisotope dilution, TN276.

analysis : determination of trace amounts of cobalt, 9050. Substrates, diverse, effects of surface-active comonomer

on adhesion, 6585. Successive heat treatment, changes in relation between

refractive index and Young's modulus, 5945. Sudden cosmic noise absorption at the moment of geo- magnetic storm sudden commencements, 4955. frequency deviation, TN326.

ionospheric disturbance, 5803; 6460. Sugar analysis, special techniques, 5680. cane, refining, II. Decolorization with absorbents,

5227.

color and turbidity measurements, 4557.

color, status, turbidity measurements, 5700. colorant during char filtration, 4716. grove radio telescope, facility in the technical pro- grams of NBS, 5781.

invert, refractive indices and densities of aqueous

solutions, Mono.64.

liquid, analysis, 3136. products and sugars, 5640. reducing, methods, 3746. retention by char, 3322. sugar products, 3750; 4276. Sugars, branched-chain higher, 3153; 4510. pyranoid and derivatives, 3119. pyranoid conformation: III. Infrared absorption

spectra of some acetylated aldopyranosides, J 64A5-65, 405 (1960).

solution, TN274.

sugar products, 5640. Suggested arrangement of mirrors to form multiple reference angles, 4325. practices for establishing sampling and sample

preparation techniques in spectrochemical analysis, 6409. Suggestion for improving forecasts of geomagnetic

storms, 5168.

Sulfate, calcium, from revivified bond char, 4571. dosimeter, ferrous, 4715. expansion, heat of hydration, and autoclave expansion, BSS5, Part 2. expansion test, BSS5, Part 2, p. 1. pentahydrate, cupric, spin-lattice relaxation time,

6796. Sulfhydryl groups in swollen polycaprolactam fibers having disulfide and alkylene sulfide crosslinks, conductometric determination of, J 66A2-

151, 185 (1962). Sulfonyloxy groups (contiguous, secondary), action of

zinc dust and sodium iodide in N, TV-dimenthyl- formamide on; a simple method for introduc- ing non-thermal unsaturation, 6580A.

Sulfoxide-water solvents at 15, 25, and 35°, kinetics of the acid-catalyzed hydrolysis of acetal in di- methyl, 6170. Sulfur dioxide, aqueous, with gaseous chlorine, heat of

oxidation, J 67A5-231, 427 (1963).

dioxide, heats of solution, 5760. green and purple: electron spin resonance studies, 3561. hydrogen sulfied, and accelerators, reaction of with propylene and butadiene, J 65A1-88, 79 (1961). mortars, simple method for measuring the amount

of granular materials, 6562. oxygen in the manganous-sulfate-bath calibration of neutron sources, the correction factor for

fast neutron reactions, 9063. preparation of high purity, J 64A4-59, 355 (1960). Sulfuric-oxide radical, microwave spectrum, 6213.
Sulfurous esters, structure, 3797. Sulfuryl fluoride, vibrational assignment, 9102. Sum array factors, use of transforms, 6643.

rules for vibrational-rotational energy levels in- cluding centrifugal distortion, 4956.

rules, relating coherent X-ray scattering data to the diamagnetic nuclear shielding constant and

to the self-energy of the charge distribution, 5714. Summary, activities of space-warn network, 5716. AIEE-IRE-ACM conference, 842A.

area 4 discussions, 3323. bituminous materials, 6410. current research on archival microfilm, TN261.

methods of metallographic specimen preparation, 4325A.

research on VLF and ELF emissions, J 68D5-363,

615 (1964). research on whistlers and related phenomena, J 64D6-96, 642 (1960).

unitary, photoproduction and other electromagnetic

interactions, 5834. VLF and ELF propagation research, J 64D6-96, 647 (1960). X-ray and electron probe analysis, 5715. Summer intensity variations of [01] 6300 A in the

tropics, J 66D2-181, 145 (1962).

school for theoretical physics, 5717. Sums, cyclic, minima, 3849. elements of matrix powers, 4957. generalized Dedekind, 6378. Sun, atomic spectra of the rare earths, 5734.

quiet, years of the international geophysical calen- dar, 5422; 6151. storms and the earth: the aurora polaris and the space around the earth, 4326.

test for outliers, extreme rank, 5529. Sunrise and sunset times at ionospheric heights along

a great circle path, calculation, TN209; TN

303. sunset times, great circle paths, TN209; TN303.

sunset, VLF signals received over long paths dur- ing periodic fading, J 68D1-313, 27 (1964). Sunset and sunrise, ionosphere: effects on the propagation of longwaves, J 67D2-249, 119 (1963). times at ionospheric heights along a great circle path, calculation, TN209; TN303.

times, great circle paths, TN209; TN303.

Sunspot cycle, a quick method for estimating the stage, J 65D6-166, 637 (1961). number, error in prediction of F2 maximum usable

frequencies by world maps, 3829. numbers, effective, January 1961 through July

1962, J 67D1-241, 37 (1963). Sunspots and ozone, 5552. Sun-time replaced by atomic clocks, 4327. Superconducting indium lead alloys, four critical fields, 6080. magnets, 4328; 4329. niobium-tin alloys, intermediate phases, J 66A4-

171, 351 (1962).

rectifiers, 4330. transition temperature on carrier concentration

in semiconducting SrTi03 , 6682. Superconductivity, influence of spin paramagnetism,

6797. lower Ginzburg-Landau critical field, 5771. NB3 Sn in pulsed fields of 185 kilogauss, 4331. semiconducting SrTi03 , 6411. Superconductor and a normal metal, 5098. Superconductors, hard, 5011. type II, surface currents, 6412. Supercooling in the barnyard, 3802A.

Superdirective receiving antennas, two- and three-loop, J 67D2-258, 215 (1963). Superimposed birefractory plates, J 69C2-190, 103

(1965).

Superior stability, gage blocks, 6096; 6097. Superposition technique, experimental verification of the WLF, 6064; 6751. Super-refractive layers, elevated, arising from atmospheric subsidence, climatology, 5949. Supersonic air stream, optical study of boundary-layer

transition processes, 3699. Supplementary standard observer proposal, field trial of the 1959 CIE, 6069. world maps of F2 critical frequencies and maxi- mum usable frequency factors, TN2-2 (PB

151361-2). Supporting evidence for solar flare effects in the F

region of the ionosphere, 4332. Suppression at high temperature of effects due to

statistics in the second virial coefficient of a

real gas, 9051. Surface-active commonomer, bonding to dentin, enamel,

6581; 6582; 6583; 6584; 6585. absorption in the polystyrene latex—aliphatic soap

system, 4631. area determination of kaolinite using glycerol absorption, 3804.

area, exchange capacity relation in a Florida

kaolinite, 3803. behavior of silver single crystals in fused sodium

chloride, 4958. characterization of real metals, 6642. composition of hydroxylapatite derived from solu- tions behavior of aqueous suspensions, 6485. condition effect on bond strength of steel beams

embedded in concrete, 4959. coverage, low, absorption of polymer molecules,

6586. currents in type II superconductors, 6412.

diffusion, K and Hg crystal whiskers, growth and

evaporation kinetics, 5378. duality of linear graphs, J 69B1&2-142, 121 (1965).

earth's, evidence for field-aligned ionization irregularities between 400 and 1000 km, 5342.

electrical resistance of lead iodide films with RH

at room temperature, 6567. field-evaporated tungsten, field desorption of thor- ium, 6755.

films, importance, 6790. flame propagation on celluosic materials exposed

to thermal radiation, J 67C3-136, 251 (1963). flammability of coated and uncoated cellulosic materials, effect of moisture, 6714; 9076. flammability of fire-retardant and conventional paint assemblies, 4333. flammability measurements by the radiant panel methods, 4960.

flat-plate wet, under adiabatic conditions with

respect to the Lewis relation, calculation of the temperature, 6619. hardened steels, the temporal dimensional stability, 9098. integral form for three-body collision in the Boltz- mann equation, 6413.

ionization, negative, complex molecules, 6882.

ionization of an alkali halide, the determination of work function from the ratio of positive to negative, 9069.

ionization of niobium, 9054; 9096. leaky wave antennas, J 64D6-96, 746 (1960).

plates, interferometric testing, J 68C2-153, 83

(1964). preparation of solid metallic samples for X-ray

spectrochemical analysis, 4961. proper accounting of conformation of a polymer,

6557; 8963. properties, monolayers of linear saturated succin- ate polyesters at air-liquid interfaces, J 65A1-

82, 51 (1961). random-walk model of chain-polymer absorption,

8980. 705
reaction of nickel-bromine, mass spectrometric

investigation, 6190. reaction of yttrium-chlorine, mass spectrometric

investigation, 6191.

refractivity, use in empirical prediction of total atmospheric refraction, J 67D1-240, 31 (1963). roughness, determination of; statistical methods

in radar astronomy, J 67D6-305, 793 (1963). roughness in ellipsometer studies, M256, p. 255. roughness of dental gold castings, 4334. roughness oxidation rate of iron, 4619.

satellite communication systems, mutual interference, J 65D5-148, 433 (1961).

state charge-storage device semiconductor, 5203.

states of silicon, direct observation of charge

storage, 5296. tension calculated with improved approximation for

activity coefficient, 3905. tensions of normal and parahydrogen, TN322.

texture on diffuse spectral reflectance, effect, 6715;

6716. thermodynamics of simple liquid mixtures, statistical, 6401. wave papers, preface, 3284. waves along a perfectly conducting plane covered with semi-infinite magneto-plasma, J 69D2-

451, 171 (1965). waves, electromagnetic, approach to the classifica- tion, 5191. waves, electromagnetic, investigation of plasma

boundaries, 6158. waves supported by a warm plasma slab, J 69D5-

508, 729 (1965). weather observations, comparison of observed at- mospheric radio refraction, 5250. Surfaces, magnetic recording media, electron micro- scopy studies, 5329. metal, diffuse spectral reflectance, 6715; 6716. metal, during fatigue stressing, gas evolution, 5372.

soil and vegetated, reflected and emitted radiation,

characteristics, 6630.

studies under high vacuum by ellipsometry, M256,

p. 245. thermally evaporated zinc cleavage, morphology,

6218. water, oxide films formed on copper single crystal,

III. Effect of light, 6468. Surge, transfer line, 9118. Survey, acoustics research, 8992. carbon-carbon bond lengths, 4453. computer programs for chemical information

searching, TN85 (PB161586).

cosmic-noise, at 65 degrees (N) declination in the 5-50 Mc/s band, 6664. current NBS work on properties of parahydrogen,

6414. ionospheric effects upon earth-space radio propagation, 5890.

literature on heat transfer from solid surfaces to cryogenic fluids, TN122 (PB161623).

literature on safety of residential chimneys and

fireplaces, M252.

magnetic thin film materials, TN247.

mathematical models in the theory of reliability, 5169. microwave power-measurement techniques employed at the National Bureau of Standards,

4454. multiply charged ions, TN243.

night airglow, latitude, 6547. polar cap absorption events (Solar proton events)

in the period 1952 through 1960, 4456. RbVRb7 ratios in minerals, 5718. research on frozen food transport refrigeration, 5891. spread-F, TN82 (PB161583). 706

techniques for measuring the radio refractive in- dex, TN99 (PB161600). USA ionospheric research 1957-1959, 3804A.

variations in use for conducting laboratory-scale column Alteration tests, 3324. very wide band antennas—1945 to the present, J

66D1-168, 1 (1962). VLF spectra from Boulder, Colorado. Atlas of whistlers and VLF emissions, TN166 (PB

181454).

Susceptibilities, electronic, Stoichiometric rutile (Ti02 ), theory, 6496. magnetic, and dilution effects in low-spin dt complexes: osmium (IV), 5456. magnetic, new absolute null method for the meas- urement of, in weak low-frequency fields, 5146. measurement of magnetic, in weak low-frequency

fields, new absolute null method, 5501.

Susceptibility, dielectric, of paraelectrics, application

to; classical diagram technique for calculating thermostatic properties of solids, 6635.

static, influence of paramagnetic resonance, 6796. Susceptor elements for high temperature induction

heating, 4962. Suspension, balance, device to minimize swinging and

vibration, J 64C4-46, 277 (1960). Suspensions, aqueous, surface composition of hydroxylapatite derived from solutions, 6485. Sweep frequency, TN331.

Sweepers, further note, 3381. Swirl chamber, flow field, 6072. Switch, for the UHF band, low input VSWR coaxial

diode, 5875. Switching, ferroelectric, and the Sievert integral, 5354.

filter, variable-parameter direct current, 4459.

logic, TN334.

properties in ferroelectrics of the family Bi4 Bam-2 Tim+103 (m+2), 4963. Swollen polycaprolactam fibers having disulfide and

alkylene sulfide crosslinks, conductometric de- termination of sulfhydryl groups, J 66A2-151,

185 (1962).

Sylvester's law of inertia, quantitative formulation, 3123A. Symbol manipulation based on ALGOL 60, 4444. Symbolic unit, 6677. Symmetric, axially, bodies, Stokes flow problem for a

class, 3872. functions of singular values, 5012. matrices, generalized functions, 6773.

potentials, domain of regularity of generalized

axially, 2228A.

relations by equivalence relations, 5926.

rotors, calculation of the energy levels, 3817.

top, levels, molecules, stark energy, 5694. top molecules, nonresonant absorption and collision diameters in the foreign-gas broadening, 6227. Symmetrically substituted ethylenediamines, complex

formation between manganese (II) , nickel (II) and zinc (II) ions, 5252. Symmetry breaking, 0ctet, and "U-spin equalities", 6519.

classes of tensors, 5036. conditions for internal friction caused by jumping

of point defects in crystals, 4964. emitter-follower, 3924. group containing both the Lorentz Group and SU3 , 5892. molecular, of iodopentaborane, 6462.

selection rule, unitary, and its application to new

resonances, 5896.

splitting of equivalent sites in oxide crystals and

related mechanical effects, J 67A4-216, 281

(1963). SU3 , S-wave hyperon-nucleon interactions, 6415. (SU3 ), unitary, experimental predictions, 5351.
Symposium, chemistry of cement, Mono.43, Vol. I and II. collision phenomena in astrophysics, geophysics, and masers, TN124 (PB161625).

ellipsometry in the measurement of thin films, M256.

humidity and moisture, 6466. International, introduction to the, on equatorial aeronony, 5426.

international, on the solar spectrum, 6152. mechanical behavior of crystalline ceramics, Mono.-

59. methods of metallographic specimen preparation, 4325A.

microstructure of ceramic materials, M257.

recent research on bituminous materials, summary,

6410. spectroscopic excitation, 3804B.

standards laboratory, M248.

statistical association methods for mechanized

documents, M269.

systems engineering in ceramics, M267.

teaching materials: Aspects of material behavior

significant to engineers, 4965. X-ray and electron probe analysis, summary of

sessions I and II, 5715. Synchronization, microsecond, and independent distri- bution systems, widely separated clocks, 3913A. two remote atomic time scales, 5719. "Synchrotron light" from the NBS 180 MeV machine,

6631.

light source, autoionization in helium, 5210. radiation decay, 6095. radio noise, observations of, the magnetic equator, following the high altitude nuclear explosion

of July 9, 1962, 5528. Synoptic radio meteorology, Mono.92; TN98.

variations and vertical profiles of large-scale iono- spheric irregularities, 5720. Syntactic integration carried out mechanically, 5721.

integration, NBS method, 4364. Synthad, service, effects of controlled decarbonization on the performance, 3196. Synthesis, application of Bernstein polynomials and

interpolation theory to linear array, 5924.

biological activity of some quarternary ammonium

and related compounds that suppress plant growth, 3325. D-glucose-3-"C and related compounds, J 69A6-376,

535 (1965). diatomic radicals, 6416.

food, 4380; 4728A.

higher ketoses by aldol reactions, 4967; 6417. humites nMg2 Si04 * Mg (F, OH) 2 , J 65A5-122, 415

(1961) . immittance function with two negative impedance

converters, 4966. isomers of eugenol, J 67A3-213, 253, (1963).

linear antenna arrays, application of the inverse Z-transform theory, 5909. organic compounds, TN274.

perfluorostyrene and (2, 2-difluorovinyl) perfluo- robensene (hydroheptafluorostyrene) a general method for synthesis of highly fluorin- ated styrenes, 5723. 2-propoxy-5 methylbenzoic acid, J 66A4-164, 313

(1962) . purification, and physical properties of seven

twelve-carbon hydrocarbons, J 67A5-236, 475

(1963) . ring structure of 7-acetamido-7-deoxy-L-#aZacfoheptulose, J 69A3-349, 291 (1965).

stability, bismutotantalite, stibiotantalite and

chemically similar AB04 compounds, 5722. Synthesizing nonuniformly spaced arrays, 6603. Synthetic, alum-coagulated SBR, rubber by a complete solution procedure, chemical analysis, 3996. corundum crystals, electron microscopy and diffraction, 6730. mica, 3804. natural rubbers, 5499. rubberbase; proposed specification for impression

material, 3730. rubber-based on dental impression materials, physical properties, 3713. rubbers and natural, 4188. sapphire, 4890.

single crystal corundum at room temperature, elastic constants, 3514.

single crystal sapphire and ruby as a function of temperature and orientation, 3317.

zeolite and charcoal, silical gel, adsorption of methane and nitrogen on silica gel, 5732. System, accurate direct and alternating voltage measurements, 6568; 6569. aluminum oxide-tungsten oxide, phase equilibria, 8935. automatic transformation of observed plasma in- tensities into their radial distribution, data

processing, 5982. behavior, prediction, 3676; 3271. Bi203-B203, 5055. CIE (w, v, w) uniform spacing, spectral tristimulus

values, 6385. design of the SEAC and DYSEAC, 1159AA.

effect of atmospheric noise on the probability of error for an NCFSK, 9073A.

experience with the Hayward linear notation, 9018. FW, theoretical studies on signal-to-noise characteristics, 5812. generating "pronounceable" names using a computer, 3953. hydrogen-methane, solid-vapor equilibrium, 9011. line-formula notation, coordination compounds,

6548.

loss concept at ELF, possible application, J 64D4-

75, 413 (1960).

loss in radio-wave propagation, 3326. many-body, classical, cluster formulation of the exact equation for the evaluation, 5326. microwave attenuation measurement, unmodulated

twin channel, 5195. multiple frequency shift, and the output signal noise ratio in a frequency modulation and

pulse code modulation frequency shift system,

error rate, 6446. NBS mechanical translation, morphological classi- fication, 6873. national standard reference data. Plan of operation, NSRDS-NBS1.

noise test of an airborne microwave refractometer,

6888. note on the four-body, 5515.

on-line data handling, for the NBS LINAC, 6245.

optical, application of cooled IR detector, 6605.

optical, local curvature of wavefronts, 6181. organization of the DYSEAC, 1159A. our measurement, and its future, 8930. over a scatter-propagation path, on the optimum

frequency deviation in an FM, 8918. pulse code modulation frequency shift, error rate

in multiple frequency shift system and the out- put signal noise ratio in frequency modulation,

6446. pulsed refrigeration, for cryogenic magnet application, 6558. refrigeration, incorporating a low-capacity, highspeed, gas-bearing-supported expansion turbine, 5161. 707
retention, hydrogen, for pressure calibration of microphones in small couplers, 5393.

retrieval, information, operational, field of cryogenics, 5194. Sc2 03-Ga203 phase equilibrium relations, J 67A1- 190, 19 (1963).

specifications for the DYSEAC, 1159B.

standards, evolution of control, 9077. ternary, sorbitol-sodium chloride-water at 25 deg.

isopiestic vapor pressure measurements, 5432. ternary, thermodynamics, 5805.

units, international, 9083. unmodulated twin channel microwave attenuation measurement, 6598. VLF direction finding, ephi, J 65C-1-53, 43 (1961). W03-B203 , 9097. Systematic atmospheric refraction errors of baseline- type radio tracking systems and methods of

their correction, 6418. data compilation, NSRDS-NBS1.

errors, 4335. errors in measures of solar flares, 4714. errors in physical constants, 4336; 4968. procedures, 4969. study of the radiation patterns of a dipole in a magnetoplasma based on a classification of the

associated dispersion surfaces, J 69D5-503, 681

(1965). wavelength shifts in atomic beam devices, correction, 3485. Systems analysis, computer, and design work in the Federal Government, evaluating, 6053. baseline-type radio tracking, and methods of their

correction, systematic atmospheric refraction

errors, 6418. binary cryogenic, an apparatus to determine the

solid-vapor, equilibria, 5190.

biological, water vapor boundary layers, 5855. characteristics of some typical, and their comparisons, signal-to-noise, 5658.

closed-shell, pair correlations, 6281. complex, confidence limits for the reliability, 5257. complex insertion ratio measuring, precision detector, 6305. computer, concurrently operating, 3164. cryogenic fluid, two-phase critical studies related to reactor, 5981. cryogenic, pressure measurements, 5592. design, statistical methods, M267, Paper 5, p. 109.

electrical units, J 66C2-94, 137 (1962) ; Mono.56. engineering and modern engineering design, M267, Paper 1, p. 1. engineering in ceramics, M267.

fused, electrode potentials, 6021; 6022; 6724.

fused, membrane potentials, electrode protentials, 5321. fused salt, observations on reference electrodes, 5514.

interest to ceramic engineers, M267, Paper 6, p. 119. line-of-sight phase, analysis of the effects of ground reflection, 6589. low atomic number dye, ionizing radiation measurement, 6837. low-Z dye, ionizing radiation measurement, 6839. measurement of water vapor boundary layers in biological, 9086. molten salt, 3123. multichannel radio communications, required sig- nal-to-noise ratios, carrier power and band- width to achieve a given performance, 5641. mutual interference between surface and satellite communication, J 65D5-148, 433 (1961). observation on reference electrodes for salt-fused, 5526. polymer, stochastic process, 5679. 708

quantum-mechanical, orders in the density, generalized master equation, 6102. rare earth and other oxides, phase equilibria studies, 6283. review of static seals for cryogenic, 6350. Schlieren, calibration, 6624.

silver iodide-sodium iodide and silver iodide-potas- sium iodide, J 64A5-64, 403 (1960). spacetime coordinate, 6382.

statistical calculations, general purpose coding,

9126. theory of relaxation in a group of weakly coupled,

9112. two-electron, compound-atom states, 6648. two-electron, Gaussian correlation functions, 6101. T

T-bench method, optical, measurement of optical path

difference, 5549. T414 m-49, TAPPI standard, internal tearing resistance of paper, effectiveness of a reference material

in reducing the between-laboratory variability, 5202.

i-test, Student's, graphs for determining power, J 66B2-

74, 59 (1962). T x T, matrices, modulary groups, 5492. modular group, normal congruence subgroups,

5511. TAi and the NBS-A atomic time scales, 5868. Table, attenuation error as a function of vane-angle

error for rotary vane attenuators, TN177.

attenuation, function of vane angle for rotary- vane attenuators (A=—40 logTM cos 6), TN229. Dedekin'd sums, J 69B4-155, 259 (1965). magnitude of reflection coefficient versus return

loss (lr = 20 log10 j^j), TN72 (PB161573).

radiation characteristics for uniformly spaced op- timum endfire arrays with equal sidelobes, Mono.95. 2n In n, n = 1(1)10,000, J 66B4-87, 217 (1962). 2935A to X8770A, current revision of the solar spectrum, 9066. Tables, calibration, accurate microwave wavemeters,

3417. chemical kinetics, homogeneous reactions, alphabetical index, Suppl. 2 to C510. chemical kinetics. Homogeneous reactions (supple- mentary tables), Mono.34, Vol. 2. contingency, and Markov chains, 4978. copper wire, H100.

correction factor, for four-point probe resistivity measurements on thin, circular semiconductor

samples, TN199.

describing small-sample properties of the mean,

median, standard deviation, and other statistics in sampling from various distributions, TN191.

diatomic. Microwave spectral tables, Mono.70, Vol.

I and Mono.70, Vol. II. dielectric constants, dipole moments and dielectric relaxation times, 6419. Einstein functions. Vibrational contributions to the thermodynamic functions, Mono.49. electron radial functions and tangents of phase

shifts for light nuclei (Z=l through 10), Mono.81. energy losses and ranges of electrons and positrons, 6420. energy losses and ranges of heavy charged particles, 6421. equivalents, weights and measures, M233.
evaluation of the Faxen approximation to the solu- tion of the Lamm equation, J 70B1-171, 95

(1966).

facilitate the determination of the ferrimagnetic resonance line-width of non-metallic magnetic

materials, TN173.

functions given explicitly in terms of one variable, OMNIFORM I: a general purpose machine program for the calculation of, TN125 (PB161626). genera of groups of linear fractional transformations, J 67B1-93, 61 (1963).

multiplet, and atomic energy levels Si II, Si in,

Si iv, NSRDS-NBS3, Sect. 1. occasional, small-sample problems, and distribution theory, TN238.

reference, for 40% iridium-60% rhodium versus

iridium thermocouples, 4887.

reference, for the palladium vs platinum-15%

iridium thermocouple, 4888.

selected, atomic spectra. Atomic energy levels and

multiplet tables Si II, Si in, Si iv, NSRDSNBS3, Sec. 1. spectral-line intensities, Mono.32, Pt. I and Mono.

32, Pt. II. thermodynamic and transport properties of air, argon, carbon dioxide, carbon monoxide, hydrogen, nitrogen, oxygen, and steam, 3806. thermodynamic properties of air in chemical

equilibrium including second virial corrections from 1500°K to 15,000°K, 9055. thermodynamic properties of moist air, 8944.

time-ratio, chemical reactions, TN62 (PB161563).

ultraviolet multiplet, C488, Sections 3, 4, and 5. Tabulation, airy functions, TN228.

data on microwave tubes, H70.

data on receiving tubes, H83.

data on Soviet electron devices, TN186; TN265.

thermodynamic properties of normal hydrogen from low temperatures, TN120; TN120A.

Vavilov distribution; energy loss straggling of protons and mesons, 6041. Tagging technique, polarized electrons and positrons,

6295.

Tail, bands, CN, spectral study of active nitrogen

flames exhibiting, 6384.

Tail, radiative, elastic electron scattering, 6327.

radiative, inelastic electron scattering, 6328.

radiative, inelastic scattering electrons, calculation, 5937. Tait equation relating volume and pressure in the study of transitions in polymers, 6522.

Talose, 4611. Tandem, predicting the performance of tropospheric communication links, 5585. Tangents and electron radial functions of phase shifts for light nuclei (Z=l through 10), tables, Mono.81. Tank, farm milk, measurement characteristics, 4748. Tanks, farm milk, examination. A manual for weights and measures officials, H98. farm milk, measurement characteristics, 4166. Tantalum, carbon, field emission, 5357. carbon monoxide and oxygen, field emission microscope used for observations, 6240. carbon monoxide, study of field emission, 5358. copper, molybdenum, and gold at 662 kev, total photoelectric cross sections, 3356A.

field emission study of carbon monoxide, 5133. metal, nuclear magnetic resonance, 3674. 181 in KTa03 , magnetic resonance determination

of the nuclear moment, 3620. wavelengths and term combinations, J 66A2-146,

111 (1962).

Tape, recording, magnetic, 3539; 3500; 4452; 5810;

6187. Tapered inlet structures for pipe culverts, 6422. TAPPI, enzymatic, and colorimetric methods, deter- mination of starch in paper, 3177. standard T 414 m-49, internal tearing resistance

of paper, discussion of lambda varience, 5923. standard T414 m-49, internal tearing resistance of paper, effectiveness of a reference material in reducing the between-laboratory variability, 5202. Target positions, estimation of variance of position

lines from fixes with unknown, J 65D3-129, 263 (1961). Targets, sinusoidal and square-wave, comparison of

lens response at several focal points, J 65A6-

127, 465 (1961). Tauberian theorems and normal function, 4417. Tchebycheff, approximations by exponentials, 4970. approximations by functions unisolvent of variable

degree, 4337. approximations, sequence transformations based

on, J 64B4-38, 227 (1960).

probability inequalities, J 65B3-59, 211 (1961). Teaching materials: aspects of material behavior sig- nificant to engineers, 4965. Tearing, resistance of paper, 4494; 5202; 5923;

strength for leather, 6646

Technical highlights of the National Bureau of Stan- dards:

1960: M237

1961: M242

1962: M246

1963: M255

1964: M264

1965: M279.

Technical, programs of NBS, possible uses of sugar

grove radio telescope, 5781. propagation factors in radio spectrum utilization, 6315.

solids at low termperatures, specific heats and

enthalpies, Mono.21.

training in the weights and measures program,

4971; 5724. Technics, and resins used in constructing dentures,

8995.

patient, pressure-indicator-paste patterns in dupli- cate dentures made by different processing,

8958. Technique, based on the negative pressure of liquids, investigating electrochemical phenomena at an electrode, galvanostalametry, 5370. calculating infrared absorption by a regular band,

3954; 4338.

classical diagram, calculating thermostatic properties of solids; application to dielectric susceptibility of paraelectrics, 6635. experimental verification of the WLF superposition, 6064. experimentation, Fisheriana revolution, 5753. extrapolating the 1 kc values of secondary capaci- tance standards to higher frequencies, TN201.

galvanostalametry, negative of liquids for investi- gating electrochemical phenomena at an elec- trode, 5370. gripping high-strength fabrics during physical

tests, 3408. image source, calculating reflection of gamma rays

or neutrons, 6593. incoherent scatter, using the, equatorial electron density profiles to 5000 KM, 5336.

isolation fault by semi-automatic, project FIST,

6314. measuring, studying the cooling capacity of air- conditioning units, 5256A. microwave theory, 6004. 709
modulated subcarrier, attenuation measurement,

6094. reducing errors in permeability measurement with

coils, 3407.

spin-lattice relaxation times, 9056. tagging, polarized electrons and positrons, 6295. tuning a reflectometer, semi-automatic, 6559A.

Weissfloch-Feenberg node-shift, automatic method

for obtaining data, 6591. WLF superposition, experimental verification, 6751. Techniques, alignment, rotary-vane attenuator gearing

errors, 6771. bolometric microwave power calibration, at NBS,

5214. calorimetry. A noble-metal thermocouple for dif- ferential use, 3807. computing refraction of radio waves in the troposphere, TN97 (PB161598).

detection of high-altitude nuclear explosions, 9057. fault isolation by semiautomatic, project FIST,

8960.

field strength calibration, at NBS, 6756. graphic storage, their potential application to library mechanization, 6438. measured by polarization, corrosion rates of fer- rous alloys, (Fe, Cr and Fe-Cr-Si), 5268. measuring the radio refractive index, TN99

(PB161600).

microbalance, high temperature application, 5483. microwave calibration, at NBS, 6209. microwave reflection, dense plasma diagnostics, TN256.

psychrometric measurement, in air conditioning

calorimetry, 6597.

pyrolytic, 8965.

sieve, obtaining small amounts of narrowly classified particles, 6366. spectrochemical analysis, suggested practices for

establishing sampling and sample preparation,

6409. sugar analysis, 5680. two theoretical, propagation of long wave-length

terrestrial radio waves, 5538. ultrasonic determination of crystalline resonances and sound velocities using NMR, 9124. using the air-gap method for the precise determination of the dielectric constant and loss angle of solid-disk specimens, 6423. Technology, and state science, current programs in the U. S. Department of Commerce for advancing,

6674.

electrodeposition, 4972. foreign-language dictionaries, M258.

forest industries, impact, 6788.

Institute for Applied, 6452. space, and cryogenics, 6668. uses of liquid hydrogen, 6157; 6424. Tee, magic, accuracy with which two loads can be matched, 16A.

Teeth, artificial, 3439; 3808.

fluorescence, 4660. research and saving, 4898. Teflon (see polytetrafluoroethylene) , J 69A2-336, 149

(1965). Telemetry, general characteristics of linear strain gage accelerometers, TN150. minimum, receiving system for the Alouette topside sounder satellite, TN222.

Telescope, for measurement of optic angle of mica, J

65C2-63, 125 (1961). magnifications, 4161.

radio, sugar grove, facility in the technical pro- grams of NBS, 5781.

Television, airborne, coverage in the presence of co- channel interference, TN134 (PB161635).

Tellurium, brass, TN276.

cathode-ray polarography, 6687. 710

Telomers and polymers, four-chloroperfluoroheptadiene, 1 5575. Temperate-lattitude spread F, equatorial ionograms,

3955. Temperature, absolute measurement, microwave noise

sources, 3414. adsorption of nitrogen and methane from hydro- ' gen gas on three different adsorbents, 5130. 1 ambient, kinetics of the transport of water through j silicate glasses, 3600. anomaly in response of semi-conductor detector, j 5921.

application, high, microbalance techniques, 5483. automatic precise recording, J 64C4-45, 271 (I960), below 1 °K, thermodynamic scale, 5060. brightness, atmosphere using a bi-exponential model in the 6-45 GHz frequency range, 5935. calibration of an X-ray diffractometer furnance,

4859.

coefficient of RF permeability measurement using an impedance bridge as an equality indicat- ing device, J 70C-217, 19 (1966).

coefficient of resistance useful in calorimetry (10°K-380°K), electrical resistance of wires, 6018.

control in the range 4 to 300 °K, X-ray diffracto- meter cryostat, J 65C4-75, 225 (1961).

control, structure and variation of the quiet iono- sphere, 5725.

control, zone refiner, 9149.

controlled, oil baths for saturated standard cells, TN141.

copper arc, J 66A1-136, 5 (1962).

correlated color, spectral distribution of typical daylight as a function, 6383. data, very low, properties of paramagnetic salts, 5853. Debye, silver iodide, x-ray determination, 5914. deuteration upon the photolysis of cellulose in a vacuum with 2537 A light, 6013. distribution in the outer solar atmosphere, 3899. down to 1/4° K, continuously operating He3 refrig- erator for producing, 4015.

electron density in dense plasmas by application of line broadening theory, 4751.

elevated, corrosion of type 310 stainless steel by vanadium compounds, 4321.

elevated, thermal decomposition of some tert- j butyl compounds, 6500. emittance measurements, high, investigation of shallow reference cavities, 5427. energy and organisms, 6044. exponential, dependence of Young's modulous for several oxides, 4084.

flat-plate wet surface under adiabatic conditions with respect to the Lewis relation, calculation, 6619.

high, vacuum-ultraviolet photolysis of ethane, 9128; 9129. humidity on the oxidation of air-blown asphalts, 4995.

inversion, question regarding atmospheres, 5158.

leaf, and energy exchange, 5444; 6175. magnetic transitions, low, some rare-earth tri- chlorides, 6838. mean free dependence of the Ginzburg-Landau

parameter, 6425. measured as the melting point of some metal

oxides in a solar furnace, 3432. melting, and change of lamellar thickness with time for bulk polyethylene, J 67A5-233, 441 (1963). melting, bulk homopolymers on the crystallization temperature, dependence, 3825. melting, natural rubber networks, 3848. methyl methacrylate-styrene copolymers, effects of composition and irradiation on the glass transition, 6012.
microwave spectroscopy, high: Alf and A1C1,

6781. operating and power loss of tires, 3283.

orientation, strength of synthetic single crystal sapphire and ruby as a function, 3317. plasma, 5973. range 4°-24°K, neon isotopes, 4753; 5468. range 4° to 300°K, tensile cryostat, 4340. range, tensile tests, 4420.

reaction, high, between nickel and chlorine, mass

spectrometric investigation, 6189.

region, liquid helium, 4900.

relative humidity in rubber laboratory of NBS,

6659.

relative humidity, influence on the photographic

response to Co80 gamma radiation, J 65C3-72, 203 (1961).

scales, thermocouples and resistance thermometers,

5729.

seal, high, sapphire windows to ceramics, 6782.

sensitivity of strain gages at elevated temperatures, four methods of determining, 6763.

sensors, immersion, thermocouple materials, Mono.-

40. solids at low, thermal radiation properties, 5822. spectral distribution of typical daylight as a function of correlated color, 9027.

spectroscopic, measurement in a shock tube using CN as a thermometric molecule, 3782. standards, calibration, international practical temperature scale of 1948, 4987.

structure, tropospheric, from groundbased meas- urement of oxygen emission, 6549. superconducting transition, carrier concentration

in semiconducting SrTi03 , 6682. suppression at high, effects due to statistics in the second virial coefficient of a real gas, 9051. temperature gradient compensated capacitors smaller than ten picofarads, designs, J 68C4-

177, 305 (1964).

test, and time of trituration on compressive

strength of dental amalgam, effect of rate of

loading, 5312. thermocouple materials, 5079. thermodynamic ideal, in the polystyrene-cyclohex- ane system, 3365. vacuum ultraviolet transmittance of lithium fluoride, barium fluoride, and sapphire, 6717. x-ray study of isothermal thickening of lamellae

in bulk polyethylene at the crystallization, 9146. Temperature dependence, elastic constants of some cer- met specimens, J 65C2-59, 89 (1961).

elastic constants of thoria specimens of varying

porosity, J 67C2-122, 93 (1963).

elastic constants of vitreous silica, 4973. electron emission in the field emission region, 4339. flow and fracture characteristics of an age-hardenable alloy, 5056. magnetic losses, 4974. refractive index increment of polystyrene in solution, 3327. Young's modulus of vitreous germania and silica, 3809. Temperature high, application, microbalance tech- niques, 4176. gas studies, arc source, 3980. induction heating, 4962. platinum resistance thermometers, 4450. thermocouples, 5647. Temperature low, apparatus, 4153A.

binary mixtures of dilute bose gases with repulsive interactions, 5213.

characteristic electron energy loss measurements,

3994.

characteristics of some commercial thermocouples,

4733. chemical reactions of free radicals, 3463.

coefficient of capacitance, some ceramic dielectrics, 3771.

distillation of hydrogen isotopes, 4323.

electrical measurements, shielded coaxial leads, 3762. equipment and techniques, 3611. experiments, Dewar systems, 3501. gamma-ray distribution from oriented cerium-141 and its application to themal contact, 5757. infrared studies of the chemistry of free radicals, 6183. infrared study of intermediates in the photolysis

of HNCO and DNCO, 6184.

insulation, 4734.

liquids on a large scale to an accelerated experi- mental program, 3383. magnetic transitions in lanthanon trichlorides, 6185. mechanical stainless steel, 4992. phase transition of Colemanite, 3612. properties of cerous magnesium nitrate, 3613. properties of materials, 5675.

service, enameled cold end surface, 4595. specimen holder for the Morelco X-ray diffracto- meter, 3945.

static seals using elastomers and plastics, 3614.

tensile properties of copper and fovir bronzes, 3244. thermocouple thermometry, 4155. thermocouples, 4735. thermocouples. I. Gold-cobalt or constantan vs. copper or "normal" silver, 4156. thermometers in the presence of stray rf fields, use of carbon resistors, 3897. thermometry, 4154; 4736; 5083. transport properties of copper and its dilute al- loys: pure copper, annealed and cold-drawn,

3245. X-ray diffraction techniques, of diborane and the products of a microwave discharge in dibo- rane, exploratory study, 3208. Temperature measurement, below 1000 deg K, 5726. bibliography, Mono.27; Mono.27 Suppl. 1. cryogenic, platinum resistance thermometers. Is fixed-point calibration adequate? TN147

(PB161648).

high, and standards: 1000-3000 deg centigrade,

6116.

line spectra, 4923. Temperature measuring, instruments at the NBS, cal- ibration of, M248, p. 25. measuring system, 5043. Temperature pressure, density relations, freezing

liquid parahydrogen to 350 atmospheres, 5590. dependence of the electrical conductivity and ther- moelectric power of pure and aluminum-doped

rutile on equilibrium oxygen, 5278. determination of piezoelectric properties as a

function, 3498. heat and entrophy change of transition, fusion and

vaporization, 5728. radiation-induced polymerization and other reactions of n-perfluoropentadiene-1,4, 8970. rheological properties of polymers, 5009. room, elastic constants of cubic lead fluoride, 6720.

elastic constants of synthetic single crystal corun- dum, 3514. oxidation of iron at low pressures, 6352. study of the variation of the surface electrical re- sistance of lead iodide films with RH, 6567. Temperature scale, international, of 1948, text revision, 5057. international practical, of 1948, 4987. international practical, of 1948: text revision of

1960, Mono.37.

of 1948, international practical, J 65A3-96, 139

(1961); 9094.

science, nomenclature, 4515. thermodynamic, definition and realization, 5062.711
Temperatures, absolute, sound velocity measurements,

4990. adsorption of methane on silica gel, 4345. acid-base equilibria in benzene. The comparative

reactivities of a phenolic acid and a carboxylic

acid with triethylamine and with 1,3-diphenyl- guanidine, 3418. antenna, auroral zone, 4299; 4920. cryogenic, elastomers, 4054; 4980.

cyclic loads, creep behavior of structural joints, 3238.

densities in shock-heated hydrogen and helium

plasmas, measurements, 3631. design of static elastomeric seals for cryogenic,

5983. determined from measurements of the velocity of sound in helium gas, 4465. discrepancy in conversion of early melting-point,

5297. disproportionation-combination reactions of alkyl radicals and hydrogen atoms, 5996. equilibrium pressures of oxygen over Mn203-Mn3 04, 6046. equilibrium pressures of oxygen over Mn02-Mn203 , 6739. glass transformation of aqueous inorganic solutions, deuterium isotope effect, 5289.

ionospheric, use of the incoherent scatter tech- nique, 3900. measuring, above 1000 °K, accuracy and precision, 3812. mechanics, foundations, 3919. metal powders at low, nuclear magnetic resonance,

5517. microwave noise sources, 4463; 4750; 6198.

1,200 °C, pyrolysis of some polyvinyl polymers, J 66A5-175, 401 (1962). para-hydrogen, 5046. powder insulators, 5059. pressures, gaseous heat conduction, 3216.

spectral absorption coefficients of homogeneous materials in the infrared, 8954.

stellar atmospheric, effect of departures from lo- cal thermodynamic equilibrium, 4047.

strain gauge calibration device, 3316. strength of ten structural adhesives, 3873. tabulation of the thermodynamic properties of nor- mal hydrogen, TN120.

thermocouple reference junctions in an ice bath, J 69C2-189, 95 (1965). thermodynamics of solid carbon dioxide solubility

in liquid solvents, 9114. very low, chemical reactions. A rotating cryostat

for mixing reactants at 4.2°K, 3998. very low, infrared spectra of solid hydrocarbons,

3581. very low, 300 series stainless steels, anomalous de- crease of the elastic moduli, 6590. Temperatures elevated, adhesion of electrodeposited

nickel to chromium, 3813. boron-oxygen-hydrogen system, 3355. creep behavior of transparent plastics, 3169. four methods of determining- temperature sensitivity of strain gages, 6763. measuring the instability of resistance strain gages, 4172. mechanical properties of ceramics and their measurement, 3847. mechanical properties of glass, 5472. method for measuring the instability of resistance

strain gages, 5142.

optical strain gage, 192A.

resistance strain gages, 4073.

stress-corrosion cracking of metals, 4441. Temperatures high, heat capacity of diamond, 5004. high-speed (milliseconds) method for simultane- ous measurement of specific heat, enthalpy, and resistivity of electrical conductors, 6546.

interaction energies and transport coefficients of

Li + H and O+H gas mixtures, 5414. methods used at NBS for measuring thermal emittance, 3641. pressures, effect of intermolecular interactions on thermodynamic properties of gases, 3512.

stability of thermoset plastics, 4307. Temperatures low, absolute, measuring, 4472. anomaly in the response of silicon semiconductor

radiation detectors, 6813. audiofrequency dispersion effects in lanthanide

salts, 5208.

austenitic stainless steels, 4740.

electrical discharge products of nitrogen and car- bon monoxide or acetylene, emission spectra

of solids, 4066. evacuated powder insulation, 3204. flame propagation in solids, 3882. formation and decay of atoms and small free radicals, 4662. glass dewars for optical and other studies, 4673. helium, 4482. high pressures, thermodynamic properties of helium, 3356.

optical measurements on thin films of condensed

gases, 3275. photolysis of ammonia in a solid matrix, 3711. quartz crystals, 3288C.

reaction of hydrogen atoms with solid propene,

3858. some mechanical properties of magnesium alloys, 3775. tabulation of the thermodynamic properties of normal hydrogen, TN120; TN120A.

technical solids, specific heats and enthalpies, Mono.21. thermal conductivity of indium antimonide, 3354. thermal conductivity of solid H2 0 and D2 0, 5819. thermal expansion of technical solids. A compilation from the literature, Mono.29. thermophysical properties of oxygen at, bibliog- raphy, TN137 (PB161638).

unkilned bone char, 4882. Template hinges, builders', CS9-65. Temporal, dimensional stability of surface-hardened

steels, 9098. world wide variations of sporadic E, 2800A.

Ten, kilocycle pound-type klystron stabilizer, 5730. picofarad fused silica dielectric capacitor, im- proved, J 69C3-196, 173 (1965). years weathering data on aluminum alloys, 5731. Tenfold assignment, Baryon resonances, verification, 5846.

Tensile, cryostat for the temperature range 4° to 300°K, 4340. impact, high speed, behavior of filamentous materials, 5212. impact properties of selected materials from 20 to 300 °K, Mono.63.

properties of amalgams, 4928. properties of annealed titanium at 100°, 25°, —78°,

and — 196 °C, effect of notch geometry, 3194. properties of copper and four bronzes, low-temperature, 3244. properties of reinforcement on the flexural characteristics of beams, 3511. shear strength of adhesive bonded metals as a function of the rate of loading, 4341. strength and modulus of elasticity of tooth struc- ture and several restorative materials, 4975. strength, measuring, precision of methods, 5583.

stress on the domain structure in grain-oriented 3.25% silicon steel, 5315.

test of paper, effect of speed, 3195.

tests in the temperature range 300° to 4°K, 4420. Tensor, magnetic probability, J 64B4-35, 199 (1960). Tensors, Pythagorean theorem in certain symmetry

classes, 5036.
Tentative U. S. standard for colors of signal lights, 4976. Terahertz photobeats for precise velocity-of-light measurements, 6489. Term in time-dependent, pair distribution function,

linear velocity-gradient, 5448. Terminal-zone corrections for a dipole driven by a two-wire line, J 66D6-235, 775 (1962). Termination, adjustable sliding, and a sliding shortcircuit, method of measuring the directivity of a directional coupler, 6201. coaxial adjustable sliding, 5866. homogeneous anionic polymerization, statistics of

irreversible, 5698. Terms of Ta n, J 66A2-146, 111 (1962). Ternary system, sorbitol-sodium chloride-water at 25

deg. isopiestic vapor pressure measurements,

5432. thermodynamics, 5805. thermodynamics of, water-potassium chloride- barium chloride at 25 °K, properties of aque- ous mixtures of pure salts, J 69A5-365, 439

(1965). water-sodium chloride-barium chloride at 25 °C, thermodynamics, J 69A1-323, 19 (1965). Terrain, elevation autocovariance, J 65D5-147, 427

(1961) . irregular or influence on propagation, 6795; 6798.

situations, irregular, application of diffractions by

convex surfaces, J 68D2-338, 239 (1964).

Terrestrial, ELF noise spectrum, aspect, when near

the source of its antipode, J 69D7-532, 977

(1965). helium loss, new speculation, 6553. path, optical depolarization and scintillation measurements, 6269. propagation of ELF and VLF waves in the pres- ence of radial magnetic field, J 69D5-506, 705

(1965).

silver, absolute isotopic abundance, J 66A1-135, 1 (1962) . waveguide, model, of nonuniform height theory and experiment, propagation, J 69D11-578,

1445 (1965). waveguides, propagation of electromagnetic pulses, 8961. waveguides, review of mode theory of radio propagation, 5646. Terrestrial radio noise, J 68D5-363, 600 (1964). extremely low frequencies, J 65D6-162, 581 (1961). measurement of characteristics, 5018. propagation, TN335.

waves, two theoretical techniques, propagation of long wave-length, 5538. Tert-butyl compounds at elevated temperatures, ther- mal decomposition, 6500. Tertiary butyl, acetylene and tertiary butyl cyanide, microwave structure determinations, 4771.

chloride, microwave spectrum, 5487. cyanide and tertiary butyl acetylene, microwave

structure determinations, 4771.

Test, analytical expressions for the thermal emittance

of shallow cylindrical cavities, 6570. apparatus for the study of forced air mixing devices, J 70C1-218, 25 (1966).

calibration services of the National Bureau of Standards, M250.

chart, NBS microcopy resolution, 5498.

collaborative, 5739. constancy of the velocity of electromagnetism, J

69D4-497, 623 (1965). determining alkali resistance of porcelain enamels,

standard, 6393. equivalence theorem for sporadic E propagation,

note, J 64D4-67, 347 (1960). heating rate, adiabatic calorimeters and the heat

capacity of alpha-alumina, 5381.

interferometer, 26-inch refractor at Leander McCormick Observatory, 6146. method, comments on application of experimental

design to the study, 5243. method for air-entrainment of standard Ottawa

sand, 3408A. mixture for evaluating highly efficient fractionat- ing columns, 2,3-dimethvlpentane and 2-methylhexane, J 67A1-189, 15 (1963).

outliers, extreme rank sum, 5529. paths, Cedar Rapids-Sterling, Anchorage-Barrow,

Fargo-Churchill, VHF radio propagation data

for, April 1951 through June 1958, J 66D1-179,

113 (1962).

pattern, variation of resolving power and type, J

64C3-39, 209 (1960). procedure for easy estimation of representative monthly electron density profiles for the iono- sphere, 3409.

results, interlaboratory, graphical diagnosis, 3223.

results, laboratory, 4704. round-robin, ranking laboratories, 5628. system, standard resistor-noise, 4593. temperature and time of trituration on compressive strength of dental amalgam, effect of rate

of loading, 5312. U.S.S.R. high-altitude nuclear, VLF phase disturbances, 5848. Tester, indoor, measuring tire treadwear, 3131. Testing, and standards, the key to quality, 3788.

ball bearings with five different separator materials at 9200 RPM in liquid nitrogen, 4342;

4977. hypotheses (parametric case), bibliography, 1930

to 1957, J 66B3-80, 109 (1962).

laboratories, concrete, cement and concrete refer- ence laboratory inspection service, 6433.

lens, J 68C3-160, 155 (1964).

lenses with the wave front reversing interferometer, J 70C2-220, 65 (1966). machines, fatigue, rotating beam, simple environ- mental chamber, 5164. metal volumetric standards, Mono.62. methods, 5481. methods, interlaboratory evaluation, 3336. phase meters, 4831.

Tests, bonded and riveted sheet-stringer panels, 1169A.

color, 4527.

color, for antioxidants, 4528. contingency tables and Markov chains, 4978.

fire, comments on three papers, 5246.

noise, airborne microwave refractometer system,

6888. regression coefficient when errors are correlated, 3810. round-robin, ranking laboratories and evaluating methods of measurement, 6332.

significance, relation between confidence intervals, 3859. univalence of transformations in R", 3361. Tetraborate, BaO '26200, the crystal structure of borium,

9065. Tetrabutylammonium bromide in methanol-benzene

mixtures. The ion pair-quadrupole equilibrium,

3842. Tetracalcium phosphate, J 69A6-378, 547 (1965). Tetrachlorocuprate ion, electron paramagnetic reso- nance and the primarily 3d wavefunctions,

6731.

electron paramagnetic resonance of tetrahedrally coordinated copper**, 6029. Tetrachlorodiborine, vibrational spectrum, 893A. Tetraethylammonium iodide, in aqueous solution at 25

deg. osmotic and activity coefficients, 5551.

Tetrafluoride, carbon, infrared spectrum, 4696. Tetrafluoroethylene and hexafluoropropylene, inclusion 713
of perfluoromethyl groups in the lattice of co- polymers, J 69A5-369, 481 (1965). Tetrafiuorohydrazine behind a shock wave, spectro- photometries determination of the rate of dis- sociation, 9030. mass spectra and appearance potentials, 3624. Tetragermanates of strontium, lead, and barium of for- mula type ABiOo, J 65A2-95, 127 (1961). Tetragonal, crystalline materials, a note on the galvano- magnetic and thermoelectric coefficients of tetragonal crystalline materials, J 67A4-218,

293 (1963). phases of the general type lOMsOo^OMsO.-., apparently isostructural with Ta2 (VNb205 , 6426. titanium dioxide, magnetic susceptibility, 3621. Tetrahedral networks, condensation model producing

crystalline or amorphous, 5870. Tetrahedrally coordinated copper

++

, electron paramagnetic resonance ; tetrochlorocuprate ion, 6029. Tetrahydrate, sodium tetrametaphosphate, structure of

triclinic form, 6484. Tetrahydrazene, mass spectra and appearance potentials, 3624. Tetrakis-(pentrafluorophenyl)-silane and tris-(penta- fluorophenyl)-phosphire, preparation and ther- mal stability, 3721. Tetrametaphosphate tetrahydrate, sodium, structure of

triclinic form, 6484. Tetroses-l-C-14, TN274.

Text, English, and picture patterns, computer inter- pretation, 5965.

revision of the international temperature scale of

1938, 5057.

Textile, coatings by infrared spectroscopy, identification, 3573. yarn struck transversely by a high-velocity projectile, experimental determination of air drag, J 68C3-162, 177 (1964). yarns for use under ballistic impact conditions, 3995. yarns, rapid impact loading, 3740; 3795; 4318;

4945; 4946; 9047. yarns, stress-strain curves and breaking energy

data, 4318. yarns subjected to rifle bullet impact, stress-strain properties, 9046. Texture, measurement, surface, on metal surfaces. Effect of surface texture on diffuse spectral

reflectance, 6716. patterns by electroforming methods, 3287. surface, diffuse spectral reflectance, effect, 6715;

6716. Thallium beam frequency standard, experimental eval- uation, 5347. Thallium-204, M260-9. Theorem, automorphs of a skew-symmetric matrix,

6571. concerning existence of interpolating functions,

8907. Dantzig, extension, 1621A. network transfer, 4430. Pythagorean, certain symmetry classes of tensors, 5036. sporadic E propagation, note on a test of the equivalence, J 64D4-67, 347 (1960). uniqueness, entire functions, 6574. Theorems, congruence subgroups, 3231. permanent, J 69B3-147, 159 (1965). Tauberian, and normal function, 4417.

Theoretical, and practical aspects of asphalts; weathering, 9137.

aspects, free radical trapping, 3550. aspects of polymer crystallization with chain folds: bulk polymers, 6493. calculations and experimental observations, lead- ing to a model for the lower ionosphere, 5350. 714

dielectric behavior of an ethyl stearate-heneicosane mixture, 3881A.

electromotive forces for cells containing a single

solid or molten fluoride, bromide, or iodide, 9110. electromotive forces for cells containing a single

solid or molten oxide, 9111. heights and durations of echoes from large meteors, J 68D10-407, 1067 (1964).

interpretation of the third spectrum of gold (Au

in), J 69A6-371, 511 (1965). model for predicting thermal stratification and self pressurization of a fluid container, 6572. model of sodium abundance, twilight sodium emission, 6263. multiplet strengths, 3350.

prediction, 5537. problems of reliability measurement and prediction, 3351.

physics, summer school, 5717. scattering coefficient for near vertical incidence from contour maps, J 65D5-147, 427 (1961).

studies on signal-to-noise characteristics of a FM

system, 5812. study of F scatter, 4812. study of sporadic-E structure in the light of radio measurements, TN87 (PB161588) ; 4457. study of the Martian and Cytherian ionospheres,

5893. study of the Martian ionosphere, 5170. techniques, propagation of long wave-length ter- restrial radio waves, 5538. Theories, antenna arrays and passive networks, analogies between, 6599.

classical field, 3820. coherence, tropospheric radio propagation, 5950.

collisions, atomic spectra, connection between the, 5530. Theory, absorbing Markov chains to the statistical thermodynamics of polymer chains in a lattice, 5925. accurate intermediary orbit for satellite astron- omy, J 65B3-56, 169 (1961). Anderson's, comparison of experimental results, 6311. anisotropic fluids, 3882. antenna, over an inhomogeneous ground plane, 5804.

attractive forces between long saturated chains, two assumptions, 5832. biomedical applications of analog computers, 4385.

boil-off calorimetry, 6494. Boltzmann equation, basis of the functional as- sumption, 5736. Brownian motion, contribution, 3167. Callaway, thermal conductivity, foundations, 5366. cavity ionization chambers, 6893.

circuit, report, J 64D6-96, 687 (1960).

coding, information, J 64D6-96, 671 (1960). coherence, biblography, J 64D6-96, 742 (1960).

coil antennas, J 69D7-534, 997 (1965). continuum, plasma, 5974. corrugated guides, contribution, J 64D5-92, 533

(1960) . critical point of a simple fluid, 3694.

crystal field, validity, applied to rare earth ions, 5809.

cylindrical antenna, J 64D5-95, 569 (1960). deep penetration of electrons and charged particles, 5072.

detection, J 64D6-96, 678 (1960).

dielectric relaxation in molecular crystals, 3352.

diffraction by a composite cylinder, J 65D1-99, 19 (1961) . diffraction by a variable screen, TN224.

diffraction grating interferometers, 4813.
dislocations: an elementary introduction, Mono.59,

p. 13. dynamic collective, odd-A nuclei, 6710. dynamic, nuclear collective model, 6002.

electronic polarizabilities of ions in crystals, 5814.

electronic susceptibilities of Stoichiometric rutile (TiO-), 6496. energy transfer in the photosynthetic unit, 5171. estimation (parametric case), bibliography, 1930

to 1957, J 66B3-80, 109 (1962). flame propagation in solids at low temperatures,

3882.

fluctuations in a plasma, 6883. frustrated total reflection involving metallic surfaces, J 67A2-199, 115 (1963). growth of lamellar spherulitic, crystallization of bulk polvmers with chain folding, J 65A4-114, 297 (1961). incoherent scattering of radiowaves by a plasma.

3. Scattering in a partly ionized gas, 5172.

infinite cylindrical antenna including the feedpoint

singularity in antenna current, J 66D2-186,

181 (1962).

interpolation and Bernstein polynomials to linear array, 5924.

interpretation, high resolution infrared spectra, molecular vib-rotors, 5493.

irreversible processes in plasmas—derivation of a convergent kinetic equation from the generalized master equation, 6495.

light scattering, Einstein-Smoluchowski, validity, 6264. long-duration meteor-echoes based on atmospheric

turbulence with experimental confirmation, 1606A. magnetic and spectroscopic properties of neptuni- um hexafluoride, 3884. magnetospheric radio scattering, J 68D5-363, 600

(1964). magneto-telluric fields, J 66D5-213, 509 (1962). mass spectra, quasi-equilibrium, 5608. methods of optical pyrometry, Mono.41; 5071. microwave technique, 6004. mirror spectrographs, I. Astigmatic illumination

of plane gratings and prisms, J 68C4-163, 195

(1964). mirror spectrographs II. General theory of focal surfaces "and slit curvatures, J 68C4-164, 201

(1964). mirror spectrographs, III. Focal surfaces and slit curvatures of Ebert and Ebert-Fastie spec- trographs, J 68C4-165, 205 (1964). mixed-path ground-wave propagation on a spherical earth, J 65D4-145, 401 (1961). odd A nuclei, dynamic collective, 9072. operation of the rotary positive displacement

meter, 5813. phenomenological, overvoltage for metallic particles, 3122A. radar reflections from a rough moon, J 66D3-189, 215 (1962). radiation from sources immersed in anisotropic media, J 68B3-125, 119 (1964). radio and hydromagnetic wave propagation in the magnetosphere, J 68D5-363, 607 (1964). radio wave propagation over inhomogeneous earth, J 67D1-242, 39 (1963).

reflection of electromagnetic waves from the inter- face between a compressible magnetoplasm

and a dielectric, J 68D11-419, 1187 (1964). relaxation in a group of weekly coupled systems,

9112.

reliability, survey of some mathematical models,

5169. sample surveys, bibliography, 1930 to 1957, J

66B3-80, 109 (1962). Schumann resonances in the earth-ionosphere cavity, 6261.

shell corrections, 5975. slotted-sphere antenna immersed in a compressible plasma. Part I., J 68D10-412, 1127 (1964); Part II, J 68D10-413, 1137 (1964).

slow-tail portion of atmospheric waveforms, 3695.

stable high-speed externally pressurized gas lubri- cated bearing, J 68C2-156, 101 (1964).

stochastic, diffusion in a plasma across a magnetic

field, 6405. superconductivity, the lower critical field in Ginzburg-Landau, 5571. synthesis of linear antenna arrays, an application

of the inverse Z-transform, 5909. thermal diffusion in dilute alloys, 5073. vibrational energy transfer, 6665. vibrational relaxation in liquids, 4386. wave propagation through a concentrically stratified troposphere with a smooth profile. Part I. Discussion of the extended W.K.B. approxi- mation, J 64D5-82, 467 (1960). wave propagation through a concentrically stratified troposphere with a smooth profile, part

II. Expansions of the rigorous solution, J

66D1-172, 31 (1962). waveguide junctions, generalized variational principles for electromagnetic vibrations, 5376. whisker growth and evaporation, 6497. Therapeutic agents and dental materials; composition, work and interrelation of international and

national organization engaged in the standardization, 6647. Thermal, acoustic oscillations in low-temperature measurements, detection and damping, J 69C1-

183, 35 (1965).

analysis, differential, 4584. balance in the F region of the atmosphere, TN162.

behavior of muscovite sheet mica, J 67A6-244, 585

(1963).

conductivities, Powell comparator method, 4849.

contact, application, low temperature, gamma-ray

distribution from oriented cerium-141, 5757. converter, TN266.

diffusion in dilute alloys, 5073.

diffusion in liquids, 4692.

diffusion of substitutional impurities in metals,

9109.

dissociation of N2F4 , mass spectrometric study,

4163.

effects of nickel-cadmium batteries, 6019. emission from a surface, effect of roughness on

the polarization, J 69D12-607, 1614 (1965). emission studies, pitfalls, 5566. emissions at radio frequencies, potential use of passive probing of atmospheric structure,

8950. emittance measurements, standardization, 4308;

4935. emittance of ceramic oxides from 1200 degrees to 1800 degrees, equipment and method for measuring, 6863. emittance of shallow cylindrical cavities, test of

analytical expressions, 6570. emittance standards, 5192. energy, laboratory measurement of the rate of re- action N= + O - NO + N, 6823. energy, laboratory of the rate of the reaction (r-fCWCV+O, 6824. environment in underground shelters, 4743. environment of occupied underground spaces with

finite cover using a digital computer, numerical analysis, 6236. etching and crystal growth of argon, 6670. explosions: adiabatic self-heating of explosives and propellants, 5077. functions and heats of formation of some of the major vapor species in the boron-oxygen-hy- drogen system at elevated temperatures, 3355. 715
gradients, response of highly precise balances, J

68C3-158, 135 (1964). gravitational atmospheric oscillations, ionospheric dynamo effects, 3875.

insulation, 5260. isomerization of isoropyl-l,l,l-d.i radicals, 5078.

linear, expansion of aluminum oxide and thorium

oxide from 100° to 1100°K, 4730. movement, solar heating, and radiative cooling

their effects on built-up roofing, TN231.

neutron flux density, standard, of NBS, intercomparisons, 5417. neutrons, and 3-Mev neutrons, sensitivity of photo- graphic film, 3865. noise emission spectrum of the atmosphere, width

of the microwave lines of oxygen, 9139.

noise, radio, properties of the lower atmosphere,

5785. properties of aqueous uni-univalent electrolytes, NSRDS-NBS2.

properties of powder insulators in the temperatures range 300°-4°K, 5059. reactions of isobutyl radicals, 5076. relaxation and Brillouin scattering in liquids, J 70A3-396, 207 (1966).

resistance of the indium alloys in the intermediate

state, 3876. shrinkage on built-up roofing, Mono.89.

stability of bis (8-hydroxy-5-quinolyl) methane co- ordination polymers, 6502.

stability of polydivinylbenzene and of copolymers

of styrene with divinvlbenzene and with tri- vinylbenzene, J 65A3-108, 243 (1961).

stability, polymer property-structure studies, at NBS, 6299.

stratification and self pressurization of a fluid container, theoretical model for predicting,

6572. structural expansions in alkali silicate binary

glasses, 3796. voltage converters for accurate voltage measure- ments to 30 megacycles per second, 3886. Thermal conductivity, 5815. applications to the determination of, heat flow in a right cylinder with arbitrary temperature boundary conditions, J 68C4-166, 215 (1964). carbon dioxide near the critical point, J 66A4-169,

341 (1962).

coefficients of dilute argon, TN333.

commercial iron-nickel alloys. 4387. condensed films: methane, 3885. foundations of the Callaway theory 5366. gas analyzer, 3760.

gases. I. The coaxial cylinder cell, J 66A4-168, 333

(1962).

gases. II. Thermal conductivity of carbon dioxide near the critical point. J 66A4-169, 341 (1962). heat capacity, standards, 3791. indium antimonide at low temperatures, 3354.

insulations, conductive-disk method of measuring,

4988.

loose-fill insulations to high temperatures, radial- flow apparatus for determining, J 67C2-126, 129 (1963). measurements, 3846; 4792. metals through the application of the principle of corresponding states, 6662.

solid H2O and D2O at low temperatures, 5819.

solid nitrogen, 5058. thermoelectric power of rutile (Ti02 ), 9106.

viscosity of simple fluids, 6498; 9107. Thermal decomposition, dicumene chromium, chro- mium plating, 4523. polymers, effect of branching, 4045. some alkyl halides by a shock-tube, 6499. some tert-butyl compounds at elevated temperatures, 6500.

2,3-dimethylbutane in a single-pulse shock tube, 9108. Thermal degradation, fractionated high and low molecular weight polyisobutylene, J 68A2-263, 153

(1964) . fractionated high and low molecular weight polys- tyrenes, J 66A4-163, 307 (1962). organic polymers, 4388; 4879; 6501. polymers at temperatures up to 1200 °C, 4389. polytetrafluoroethylene as first-order reaction, note, J 64A6-73, 513 (1960). Thermal expansion, and Young's modulus for a one- dimensional model of a solid, 5238.

linear, elastomers in the range 300° to 76°K, 5447.

silver iodide, 5821. some engineering materials from 20 "K to 293 °K,

5074.

technical solids at low temperatures. A compilation from the literature, Mono.29. Thermal radiation, investigation of the surfaces of the Moon and Planets, J 69D12-603, 1585

(1965) . Kirchhoff's Law and its generalized application, J

69B3-148, 165 (1965). Moon at 14.5 Gc/s, polarization, J 69D12-604, 1612

(1965). numerical evaluation of, characteristics of diffuse cylindrical and conical cavities, J 70C2-224, 139 (1966).

properties, measurement, 5306. properties, November 1962 to October 1963, TN252.

properties of solids at low temperatures, 5822. standards and measurements of the Radiometry

Section at NBS, 5075. surface flame propagation on cellulosic materials

exposed, J 67C3-136, 251 (1963). Thermally evaporated zinc cleavage surfaces, morphology, 6218. Thermionic diode noise sources, emission stabilization, TN160.

Thermocouple, calibrations to 2,200 °C, furnace, J 66C3-101, 255 (1962).

control of radio-frequency heating, open-probe,

6266.

differential, voltmeter, 4422.

iridium, 4888. low-temperature, thermometry, 4155. materials, Mono.40; 4514; 5079. noble-metal, for differential use. Techniques in calorimetry, 3807.

radiation, thermometry above 900 deg K, 5816. reference tables (Platinel 11), J 68C4-174, 263

(1964). rhodium, studies at NBS of the platinum-6% rho- dium vs. platinum-30%, 5708. tungsten-rhenium, to 2000 °C, studies on, J 67C4-

146, 337 (1963) ; 5712. Thermocouples, bonding, into samples, hard gallium

alloys for use as low contact resistance elec- trodes, 3563. commercial, low temperature characteristics, 4733. high temperature, 5647. iridium, 4887. iridium-rhodium alloys versus iridium, reference

tables, J 68C1-151, 41 (1964). low temperature, 4735. low-temperature. I. Gold-cobalt or constantan vs. copper or "normal" silver, 4156. noble metal, 5677.

platinel II, oxidizing atmospheres, 5081. reference tables, 40 percent iridium-60 percent rhodium versus iridium, J 66C1-81, 1 (1962).

resistance thermometers, temperature scales, 5729. temperatures, reference junctions in an ice bath, J 69C2-189, 95 (1965). Thermodynamic, acidity constants, determination, 988A. 716
constants for association of isomeric chlorobenzoic and toluic acids with 1,3-diphenylguanidine in benzene, J 65A3-103, 209 (1961). data compilation and review at NBS, 6503. equilibrium on inferences of stellar atmospheric

temperatures, effect of departures from local, 4047. functions for zirconium and unsaturated zirconium

hydrides, high-temperature, J 67A5-230, 403

(1963).

functions, vibrational contributions. Tables of Einstein functions, Mono.49. gas, functions and isotope exchange functions for the diatomic hybrides, deuterides, and tritides, Mono.20.

ideal temperature in the polystyrene-cyclohexane

system, 3365. pK value of the picric acid in water at 25 °C, spec- trophotometric determination, J 67A3-211, 241

(1963). property values for gaseous and liquid carbon monoxide from 70 to 300°K with pressures to 300 atmospheres, TN202.

provisional, functions for para-hydrogen, TN130

(PB161631).

related properties of parahydrogen from the triple point to 100 °K at pressures to 340 atmospheres, Mono.94.

related, quantities from 0 to 50°, dissociation con- stant of the protonated acid form of 2-amino2- (hydroxymethyl) -1,3-propanediol [tris (hy- dorxymethyl) aminomethane] and, 4042. representation of high-pressure vapour-liquid equilibria, 5818. research, current, on light-element compounds at NBS, 3492.

scale of temperature below 1 °K, 5060.

stability of sugars, TN274.

structure of the outer solar atmosphere. Effect of departures from the Saha equation on infra- red properties of the low chromosphere, 3887.

structures, of gaseous LiO, Li2 0 and Li2 02, infra- red spectra, 5763. study of the thorium phosphide with a mass spec- trometer, 5080. temperature scale, its definition and realization, 5062. transport properties, NSRDS-NBS2; TN289;

3806; 4860. Thermodynamic properties, air in chemical equilibrium

including second virial corrections from 1500 °K to 15,000 °K, tables, 9055. chemical, selected values. Part 1. Tables for the

first twenty-three elements in the standard

order of arrangement, TN270-1.

chemical, selected values. Part 2. Tables for the elements twenty-three through thirty-two in the standard order of arrangement, TN270-2.

cryogenic fluids, 6435.

fluids, 3695A.

gases, 5817. gases at high temperatures and pressures, 3512. helium at low temperatures, 4482. helium at low temperatures and high pressures,

3356. helium from 3 to 300 °K between 0.5 and 100 at- mospheres, TN154.

helium from 6 to 540 °R between 10 and 1500 psia, TN154A.

highly ionized air, 2394A. magnesium oxide and beryllium oxide from 298 to 1,200 °K, J 67A4-221, 325 (1963). methylphosphonyl dihalides from 15 to 335 °K, J

68A4-285, 367 (1964). moist air, 8944.

neon from 25 to 300 °K between 0.1 and 200 atmospheres, 9113. neon, preliminary, 6307. nitrogen from 64 to 300° K between 0.1 and 200 atmospheres, TN129 (PB161630).

nitrogen from 114 to 540° R between 1.0 and 3000

psia. Supplement A (British Units), TN129A.

normal hydrogen from low temperatures, TN-120; TN120A.

polyethylene predicted from paraffin data, J 67A3-

210, 233 (1963).

polytetrafluoroethylene, J 69A2-236, 149 (1965). potassium borohydride from 0 to 375° K; heat ca- pacity from 15 to 700° K; J 68A6-314, 651

(1964). theorium dioxide from 298 to 1,200° K, J 65A2-92,

105 (1961). Thermodynamic quantities, 4600; 4601. acid dissociation constant for triethanolammonium

ion in water from 0° to 50°C, J 64A4-56, 343

(1960).

dissociation constant for pyrrolidinium ion, 5299. related dissociation constant of 4-aminopyridinium

ion in water from 0° to 50° C, J 64A5-66 427

(1960).

related, from 0 to 55 deg., second acid dissociation of N, N-Di-(2-hydroxyethyl) glycine, 6359. Thermodynamics, and mechanics, foundations, 3832,

3919. antireciprocity and memory in the statistical ap- proach to irreversible, 5922. aqueous solutions of hydriodic acid from electro- motive force measurements of hydrogen-silver

iodide cells, 6504.

dissociation, tris (hydroxymethyl) aminomethane in 50-percent methanol, J 69A3-345, 263 (1965).

field, some aspects of non-equilibrium, 9015. hydrogen solubility in cryogenic solvents at high

pressures, 6505.

irreversible, memory effects, 4174.

lattice model of a polymer molecule, statistical, 6402. mechanics, foundations, 3919. mechanisms, and energetics, polymer decomposition, 3717. nonequilibrium, canonically invariant relaxation

processes, 6224. nonequilibrium, creep in polycrystals, 6225. perfect elastic fluids, J 68B3-123, 103 (1964).

solid carbon dioxide solubility in liquid solvents at low temperatures, 9114.

solid-dense gas equilibria, TN316.

solutions of deuterium chloride in heavy water from 5 to 50 deg, 6506.

solutions of hydrochloric acid in 50 wt. % methanol from 10 to 40 deg, standard electromotive

force of the hydrogen-silver chloride cell, 6390.

statistical, polymer chains in a lattice, application of the theory of absorbing Markov chains, 5925.

statistical surface, simple liquid mixtures, 6401. ternary system, 5805. ternary system: water-glycine-potassium chloride at 25 °C from vapor pressure measurements, J

69A2-334, 131 (1965). ternary system: water-potassium chloride-barium

chloride at 25° K, properties of aqueous mixtures of pure salts, J 69A5-365, 439 (1965). ternary system: water-sodium chloride-barium

chloride at 25 °C, J 69A1-323, 19 (1965). Thermoelectric, colorimeter, development of filters for, J 67C4-143, 319 (1963).

effects, 3356AA. power and electrical conductivity of pure and 717
aluminum-doped rutile on equilibrium oxygen

pressure and temperature, 5278. power and thermal conductivity of rutile (Ti02 ), 9106. mechanical stability of platinel n thermocouples in oxidizing atmospheres, 5081. (radiometric) detectors, factors affecting the sensitivity and spectral response, 9019. Thermogravimetric study of some new transition metalSchiff base coordination polymers, 9115. Thermometer, acoustical, 6580. gas, 4096A; 6879.

resistance, 4485.

resistance, to calorimetry, 4498. Thermometers, carbon and germanium, at 4.2 °K, 4277.

liquid-in-glass, 4147; 5082.

liquid-in-glass, calibration, Mono.90. low temperature, presence of stray rf fields, use of carbon resistors, 3897. platinum resistance, TN147 (PB161648) ; 3587;

4450; 4545; 4708.

resistance, temperature scales, thermocouples, 5729. Thermometric cells for calibration of liquid-in-glass thermometers, 5082. Thermometry, above 900 deg K, thermocouple and radiation, 5816. below 1 deg K, magnetic fixed point, 5877. carbon resistance, mixed dc and rf currents, 3455.

liquid helium temperature region, 4900. low temperature, 4154; 4736; 5083. platinum resistance, the Sondheimer-Wilson-Kohler

formula, J 69C4-209, 283 (1965). thermocouple, low-temperature, 4155. Thermophysical properties of, argon from 0 to 300 °K,

bibliography, TN217.

oxygen at low temperatures, bibliography, TN137

(PB161638).

zirconium hydrides, 4596; 5084. Thermopiles for absolute radiometry in the far ultraviolet, 8921. Thermoplastic pipe, long-term working stress, 4151. Thermoset plastics at high temperatures, stability, 4307. Thermostatic properties of solids, classical diagram

technique for calculating; application to di- electric susceptibility of paraelectrics, 6635. Thesaurus automatically from a sample of text, p. 41. Theta functions and Jacobian elliptic functions, AMS55.

Thickening of lamellae in bulk polyethylene at the crystallization temperature, x-ray study of iso- thermal, 9146. Thickness, adsorbed polystyrene layers by ellipsometry, J 67A5-232, 431 (1963). determination, 5823. measurement of thin films, M256, p. 7. microstructure of, electrodeposited copper, relation of partial (110) pole figure, 5634.

optical gradients, determination, from a far dis- tance, 5285. Thicknesses of adsorbed glass finishes by ellipsometry,

6408. Thin, circular semiconductor samples, correction factor

tables for four-point probe resistivity measurements, TN199.

evaporated metal films, characteristics, electrical resistance-strain, 5319.

film, magnetic, materials, TN247.

films, ellipsometer measurements and calculation of reflection coefficients from, a Fortran pro- gram for analysis, TN242.

films from the characteristic electron energy losses optical constants, 6268.

films on semiconductors, contact properties, 5741. layer chromatograms of polycyclic, aromatic hydrocarbons, photochemical changes, 6285.

rods, gas of long, first order phase transitions, 5361. target bremsstrahlung bounded by a forward cir- cular cone, 3310. Thinning devices, jet, preparation of A12 03 electron microscope specimens, 6168. Thiocyanate and deuterium oxide, in the forearm of man, transcapillary exchange rates, 898A.

Thiosulfate, residual, in processed film, determination,

J 67C3-134, 237 (1963).

stability of residual, in processed microfilm, J 67C1-

115, 15 (1963). Third, international conference on precision electro- magnetic measurements, 5085. spectrum of cerium, 6683. spectrum of gold (Au in), J 64A6-69, 481 (1960). spectrum of palladium (Pd in), J 67A2-197, 87

(1963). spectrum of praseodymium, analysis, 5198. zonal harmonic, inclusion, accurate reference orbit of an artificial satellite, J 70B1-166, 17 (1966).

Thirty-five X 56, SU(6) Clebsch-Gordan coefficients for the product, 9052. This works for us—approval, books for a science li- brary, 4390. ThOe, at 25° C, elastic constants of single crystal, 6016. containing CaO, relaxation, mechanical and electrical, 5471. Thomson or Kelvin double bridge, method of controlling the effect of resistance in the link circuit, J

64C4-44, 267 (1960). Thoria, polycrystalline, elastic constant—porosity relations, J 67C1-118, 39 (1963).

first spectrum, low even configurations, 3608. specimens of varying porosity, temperature dependence of the elastic constants, J 67C2-122, 93

(1963) . Thorium, dioxide from 298 to 1,200° K, thermodynamic

properties, J 65A2-92, 105 (1961).

field-evaporated tungsten surface, field desorption,

6755. lamps, more wavelengths, J 69A2-332, 109 (1965). oxide and aluminum oxide from 100° to 1100°K,

4730. phosphide with a mass spectrometer, 5061; 5080. Thorpe- Senftie, and Gouy methods, absolute magnetic

susceptibilities, 4462. method, absolute magnetic susceptibilities, 3957. Threaded term association files, M269, p. 167. Threads, glass and ceramic tubes, a method of cutting, 3384. screw, for Federal services, standards, 1963 Suppl.

to H28 (1957), Parts I, II, and III. Three-body-bound state in He4

, 5824. body collision in the Boltzmann equation, surface

integral form, 6413. dimensional nature of boundary-layer instability, 5063. generalized master equations, 6254. neighbor shells model in NaCl, relaxation modes of trapped crystal point defects, J 68A5-290, 425

(1964) . particle scattering operator, classical gases, 5541. Threshhold, energy dependence for the photodetachment

of I", 6039. Thumbtack accelerometer for the 1.5-150 KC range,

6507. Thunderstorms, ELF electric fields, J 64D5-77, 425

(1960). Ti I, revised term values, 3297.

Tidal, Lunar, variations of sporadic E, 4737.

variations, studying the lunar, D region of the ionosphere by means of a very-low-frequency phase observations, 5713. 718
Time and frequency, broadcast services of the National Bureau of Standards, M236; 4665. broadcasting, 5825. calibration services at the Boulder Laboratories of the NBS, M248, p. 37. constant, (1963), 5505. national standards in the U.S., 3658. Time, and its inverse, 5086. atom, 8906. cesium beam atomic, and frequency standards,

6626. considerations relative to an atomic definition for

the unit, 6374. correlation expressions for transport properties, comment on a paper of Mori, 3475. correlation formulas for transport coefficients, ele- mentary derivation, 6036. correlation functions and transport coefficients in

statistical mechanics, 9116. delay to amplitude converter, 3124. dependent properties, isotopically disordered one- dimensional harmonic crystal lattices, numerical computation, 5522. dependent, term, pair distribution function, linear velocity-gradient, 5448. frequency channel correlation function, complex, measurement, J 68D10-416, 1161 (1964).

interval and frequency standards and measurements, progress in the United States during

the last three years, J 64D6-96, 592 (1960). radio pulse, propagation, 5784.

ratio tables, 5087.

ratio tables—a rapid simple method of estimating

the order of chemical reactions, 5087.

ratio tables, chemical reactions, TN62 (PB161563).

resolved electron optical image of a pulsed atomic beam in flight, 5088. resolved spectroscopy in the micro-second range,

rotating shutter, 9001.

scale, NBS—its generation and dissemination, 9087A.

scale, NBS, its relation to other time scales, 9088.

scales, atomic synchronization of two remote, 5719.

scales, comparison of the TAi and the NBS-A

atomic time, 5868.

scales, comparison of two independent atomic, 5131.

service, fixed observation interval, 4603.

services and standard frequency, M236.

services of NBS, LF-VLF frequency, 6837A.

signals and standard frequencies from NBS sta- tions WWV and WWVH, M236.

size-dependent spin lattice relaxation, 5659.

spin-lattice relaxation, of cupric sulfate pentahydrate, 6796. standards, 3887A.

standards and frequency, 6091. trituration and test temperature on compressive

strength of dental amalgam, effect of rate of

loading, 5312. universal, control of the Arctic and Antarctic F

region, 5103. variations in tropospheric refractive index and

apparent radio path length, 3423. variations of the energy spectrum of solar cosmic rays in relation to the radiation hazard in space, 5089. varying model for the ionospheric F2 layer, 5894. WWV, signal receiver, 3915. Time-of-flight mass spectrometer, observation of the products of ionic collision processes and ion decomposition in a linear, pulsed, 8905. Times, technique for spin-lattice relaxation, 9056. Timing, and space navigation with an existing ground

based system, 5089A.

potentials of Loran-C, 4391.

Tin, and niobium, 5041. compounds, TN276. Ti02 , (Rutile) at low frequencies, dielectric constant and dielectric loss, 3501A.

n-type rutile, multiple-band conduction, 6876. thermal conductivity and thermoelectric power of

rutile, 9106. Tire treadwear, indoor tester for measuring, 3131.

Tires, power loss and operating temperature, 3283. road wear, factors influencing, 446A.

Tissues, calcified, 4046.

calcified, nature of the inorganic phase, 3852. hard tooth, adhesive bonding of various materials, 6581; 6582; 6583; 6584; 6585. mineralized, 4776. Titanate, barium, electrophoretic deposits, 4630.

electronic energy bands in strontium, 6032.

electronic transport in strontium, 6035. Titanium, alloy, effect of temperature and notch geometry on the tensile behavior, J 70C1-215, 5 (1966). annealed, at 100°, 25°, —78°, and —196° C, effect of notch geometry on tensile properties, 3194.

(III) chloride and titanium (III) bromide (tita- nium trichloride and titanium tribromide),

3888. (IV) —EDTA complex, polarographic analysis of, application to paint pigments, J 69C1-187, 67

(1965). high-temperature alloys, spectroscopic standard

samples, 4303. mechanism of electrolytic deposition of, from fused

salt media, 4360. p-type, sesquioxide, electrical conduction, 4055. polarographic analysis, (IV) —EDTA complexes,

9091. standards for hydrogen content, J 66A6-183, 483

(1962) . tetragonal, dioxide, magnetic susceptibility, 3621.

trichloride, heat of formation, J 64A6-74, 515

(1960). zirconium, iron, and aluminum, method for the separation of from one another and for their subsequent determination, J 64A6-79, 535

(1960). Titheridge coefficients for the polynomial method of deducing electron density profiles from iono- grams, J 67D1-245, 79 (1963).

Titrations, halides, precise coulometric, J 67A1-192, 31

(1963) . high-precision coulometric, special reference to the determination of uranium, 6778. nonaqueous solutions, 604A. potassium dichromate, precise coulometric, J 67A5-

234, 453 (1963).

potentiometric, weak acids in methanol-water sol- vents, 6155. Titrimetry, TN275. Today and tomorrow: the place of radiochemical methods of analysis, 9090. Tokyo, Japan, minutes of meeting, triple commission

for spectroscopy, 5491. Tolerances for, commercial weighing and measuring

devices, (corrected through 1961), H44, 2d ed. layer thicknesses in dielectric multilayer coatings and interferences filters, J 64A6-70, 487 (1960). Toluene, ethylbenzene, and Cumene, 5788. Tomorrow's, billions, food for, 6077.

facilities for standards and measurements, 6508. Tongs used in testing for radioactive contamination,

4392. Tongue-tearing strength of woven fabrics, interlabora- tory evaluation of procedures, 6147.

Tool, global ionosphere studies, topside sounding, 5826A. machined steel bars, R267-65. 719
Tooth, and bone, characteristics of insoluble protein, 5947. fluorometer, 5826. hard, tissues and some restorative materials, 3481. hard, tissues by a surface activity test, 4074. structure and several restorative materials, elasticity, 4975. structure, X-ray scattering study, 911A.

tissues, hard, adhesive bonding of various materials, 6581; 6582; 6583; 6584; 6585. Top molecules, symmetric, nonresonant absorption and

collision diameters in the foreign-gas broadening, 6227. Topics in quantum statistics. The Wigner function and

transport theory, 4929. Topography, fracture, 6086.

fracture, brittle polymers, 6765. Topological derivation of the Mayer density series for the pressure of an imperfect gas, 3889. Topology, chemical, absolute configuration, J 67A6-245,

591 (1963). some extensions of Banach's contraction theorem, J 69B3-151, 179 (1965). Topside, frequency, sounder program, 5023. ionograms, method for obtaining the parameters of

electron-density profiles, TN315.

ionosphere, constitution, 6250. ionosphere, rocket experiment involving radio reflections, 5162. sounder ionograms, electron density profile analysis, 6025. sounders in ionospheric research, 9104. sounding as a tool for global ionosphere studies, 5826A. sounding of the ionosphere, 5090. Topside sounder satellite, alouette, spread-F observations, 6388.

first observations from the fixed-frequency; iono- sphere explorer I satellite, 6161. ionospheric, early results, 5671. NASA, first results, 5362. program, NASA, 4657. Toroid coil, TN311.

Toroidal, magnetic materials, 4424. resonance vibrations of uniform bars of square

cross section, J 65A3-99, 167 (1961). Torus, Stokes flow, 3671.

Total, electron content of the ionosphere content at middle latitudes near the peak of the solar

cycle, 5806. hemispherical emittance of coated and uncoated

Inconel and types 321 and 430 stainless steel, J 66C3-102, 261 (1962).

photoelectric cross sections of copper, molybdenum,

silver, tantalum, and gold at 662 kev, 3356A.

photonuclear cross sections for low atomic number

elements, 9117. Trace, amounts of cobalt, 9050. elements in petroleum products, analytical standards, Mono.54.

Tracers, transitor-curve, single-trace sweep adapter,

4289. Traces of products of angular momentum matrices, 5091; 5092. Tracking, radio baseline-type, systems and methods of

their correction, systematic atmospheric re- fraction errors, 6418. , stations, NASA satellite, VLF utilization, J 68D1-

315, 43 (1964).

Traffic, computer simulation, 4540. pedestrian queueing, J 67B4-105, 229 (1963).

street, computer simulation, TN119 (PB161620).

Trailer, refrigerated, bodies hauling perishable food, 3394; 3395.

Trailers, and trucks, 5096.

refrigeration, chilled air distribution, 4521.

Trails, meteor, radio propagation by reflection, 6329. Training, computer to assign descriptors to documents

:

experiments in automatic indexing and experi- ments in information correlation, 6509. evaluation of personnel measurement standards at Sandia Corporation, M248, p. 171. program, Navy calibration, M248, p. 187.

selection, and evaluation of precision measuring

personnel in the Air Force, M248, p. 177. weights and measures program, technical, 5724.

Trajectories, Brownian motion, trapped, 6265. Brownian trapped, and polyelectrolytes, associated

ions, 6244. Transactions Joint Commission for Spectroscopy, report on atomic spectra, 5093. Transauroral path, high-frequency, fading correlation bandwidth and short-term frequency stability measurements, TN165.

Transcapillary exchange rates of deuterium oxide and

thiocyanate in the forearm of man, 898A.

Transcendental functions-logarithmic, elementary, AMS55.

Trans-crotononitrile, microwave spectrum, 3646. Transducer, improved external recording of arterial pulse waves, 5401. rugged null-type pressure, of high reproducibility for accurate gas phase PVT measurement,

J 69C1-182, 27 (1965). Transducers, high-strength ceramics in vibration, 6520.

linear, Mono.67.

nonlinear, Mono.67.

pressure, commercial carbon composition resistors, 6644. pressure, methods for the dynamic calibration, Mono.67.

reversible, calibration for carrier operated microphones, 3453. Transequatorial, propagation, observation and analysis, J 68D11-429, 1251 (1964). radio propagation, lunar semi-diurnal tides in h'F and their influence, J 68D4-357, 419 (1964). reception of a very-low-frequency transmission,

6510. Transfer, charge, complexes, infrared spectroscopy of weak, 6132.

effects of anharmonicity on vibrational energy,

6010.

electronic energy, fluorescence of nitric oxide, rotational, vibrational, 5650. instrument for the intercomparison of microwave power meters, 3410.

line surge, 9118.

lines, cryogenic, air dielectric coaxial cables, 5180.

liquid hydrogen through uninsulated lines, 3890. NBS X-ray beam calibrations, J 66C2-91, 107

(1962). problems, line, 5446. problems, radiation, in the rocket ultra-violet lines, 5617.

reactions, proton, between H3+ and saturated hydrocarbons, 6319. Transfer reactions, proton, involving sec-propyl ions, hydride, 6120. proton, occurring in the gas-phase radiolysis, 6320. theorem, network, 4430. theory of energy, in the photosynthetic unit, 5171. theory, vibrational energy, critical examination,

6665.

triplet-state energy, from acetone to aliphatic alde- hydes in the gas phase, 6513. Transference numbers, pure molten sodium nitrate, 5827. 720
Transformation, automatic ; observed plasma intensities into their radial distribution, data processing

system, 5982.

glass, change in the heat capacity of boron trioxide, 5943.

glass, excess entropy, 6059. representations, and calculations—chemical struc- tures as information, 6633.

silver iodide, kinetics and mechanism of the lowcubic to hexagonal phase, 6169. temperatures, glass, of aqueous inorganice solutions, deuterium isotope effect, 5289. uniform chromaticity, the diagram, lines of con- stant correlated color temperature based on MacAdam's (u, v), 5449. volume relaxation of As2 03 in the glass, 9133. Transformations, axiomatic language for string; axle, 6611.

R", new criterion for the univalence, 3361. sequence, based on Tchebycheff approximations, J 64B4-38, 227 (1960).

stress-induced martensitic, in 18Cr-8Ni steel, 6406. Transformer calibrations, voltage, international comparison, 5913. capacitance bridge, voltage ratio measurements,

J 66C1-84, 25 (1962).

current, and comparison method, standard—a basis

of the establishing ratios of currents at audio

frequencies, 3402. double-tuned, variable bandwidth, TN237, p. 5. ratios, precision measurement, 3857. standards for audio frequencies, the design and

performance of multirange current, 9068. Transforms, Laplace, AMS55. sum array factors, 6643. Transhorizon, propagation, simulated angular response

pattern, J 68D2-330, 173 (1964). radio-meteorological parameters, Mono.92.

radio transmission loss and surface refractivity, a comparative study, J 66D5-219, 593 (1962). Transient, decay curves, criteria from, 3169A.

solutions of the "bafflled piston" problem, J 65B1-

40, 1 (1961). Transients, early magnetic, caused by high-altitude nuclear detonations, interpretation, J 69D8-549, 1179 (1965).

Transition, array for d

3 —>d2p : vanadium, 5828. behavior of isolated disturbances superimposed on laminar flow in a rectangular pipe, J 64A4-50,

281 (1960). boundary layer with zero pressure gradient, evolution of amplified waves leading, 3206. change, fusion and vaporization, temperature, pressure, heat and entropy, 5728. experimental, probabilities for spectral lines of seventy elements. Derived from the NSB tables of spectral-line intensities, Mono.53.

first order phase, in a gas of long thin rods, 5361. poly-L-proline, evidence for a cooperative intra- molecular, 6054. metal-Schiff base coordination polymers, thermogravimetric study, 9115. microwave, probabilities, zero-field theory, and

optical Zeeman effect, 4903.

probability, M278.

probability of the O I multiplet at 6157A, measurement, 4171. processes, nonsingular embedding, within a more

general framework of coupled variable, J 65D6-

163, 595 (1961).

resistive, in Nb3 Sn, 5041. resonant to non-resonant line shape in microwave

absorption, 9119. temperature of methyl methacrylatestyrene copoly- mers, effects of composition and irradiation on

the glass, 6012. Transition probabilities, J 66A1-136, 5 (1962) ; J 67A6-

240, 561 (1963).

atomic, NSRDS-NBS4, Vol. I. atomic, present status of our knowledge, 5588. experimental, six oxygen multiplets, 6063. forbidden lines, J 68A1-253, 61 (1964).

Transitions, forward scattering, exclusion of parity unfavored, 6062. high pressure, visual observation, 5125.

involved, identification of, through optical detection of microwave transitions between excited elec- tronic states of CN, 6270. lanthanon trichlorides, low temperature magnetic,

6185.

liquids, 4780. low temperature magnetic, some rare-earth tri- chlorides, 6838. mass spectra of methane and the deuteromethanes,

metastable, 5475. metastable, and initial preparation in mass spectra, 6137. metastable, and mass spectra of H3 S, HDS and D2 S, 5459. microwave, between excited electronic states of CN

and the identification of transitions involved,

optical detection, 6270. microwave, electronically excited CN produced by a

chemical reaction, 4818. multilevel systems: Calculation from impulsive and

steady-state experiments, 4393. nuclear spin, antiferromagnetic KMnF3 , ultra- sonically induced, 6517.

optically forbidden, in the continuum of the rare gases by electron energy loss measurements,

6239. permitted and forbidden lines of Si X, Fe XIV and Fe X, 5094. phenon induced nuclear dipole, 8939. polymers, utility of Tait equation relating volume and pressure in the study, 6522. sample container, errors in drop calorimetry, 5341. temperature, superconducting, on carrier concentration in semiconducting SrTiOa, 6682.

triplet*—^triplet, aromatic compounds extinction

coefficients, 6753. Transistor, circuit, stable, diode in feedback loop, 3186. curve tracers, single-trace sweep adapter, 4289. frequency meter, 3411. P-A amplifiers, 3891. screening procedure using leakage current measurements, J 69C4-213, 319 (1965).

tester, simple, building one, 5217. use in analog simulation, 4798. Transistor-magnetic core digital circuit, TN113 (PB16-

1614). Transistorized building blocks for data instrumentation, TN68 (PB161569) ; TN168.

velocimeter for measuring the speed of sound in the

sea, 3357. Transistors, second breakdown, 4907. Van de Graaff source leak controls, 5838. Translation, machine, languages, recognition of clauses, 4266A.

machine, natural languages, hindsight technique, J 66B2-71, 47 (1962). mechanical: U.S.—Japan Joint Conference, 6860. method for mechanical, used by the NBS group and

the structure of its machine glossary, 5774. operator, multipole matrix elements, 6877. system, NBS mechanical, morphological classification, 6873. Translational, dispersion in gases, 5829. energy accommodation in the nickel-chlorine sur- face reaction, 5095. 721
Transmission, anomalous, rare gases for electrons of sub-excitation energies, 5920.

basic, loss in tropospheric forward scatter propagation, 3456.

electron microscopy, 4578; 6703. infrared, along slant paths in the stratosphere,

4698. infrared, atmosphere to solar radiation, 5410. Kikuchi lines in silicon and diamond, 9140.

line or waveguide line characteristic impedances,

relationships between different kinds of net- work parameters not assuming reciprocity or

equality, 6343. long-distance, characteristics of waveguides, J 65D1-105, 75 (1961).

loss, monthly median, and refractive index profile characteristics, correlation, J 65D1-104, 67

(1961).

loss predictions for tropospheric communication cir- cuits, TN101, Vols. 1 and 2. m-, dm- and cm waves to long distances, 4876A.

reflection formulae, composition, J 67D1-244, 65

(1963).

reflection of electromagnetic waves by a hot plasma, J 69D5-509, 735 (1965).

reflection of electrons by aluminum foils, TN187.

reflection of radio waves at a continuously stratified plasma with arbitrary magnetic induction, J 66D1-176, 81 (1962).

stratified layers, analysis and synthesis, J 67D3-

267, 331 (1963). power, characteristics of the ear and the skull from

hearing threshold data, 4891. process and radio wave reflection, plasma collision frequencies proportional to energy, TN164.

Rayleigh waves across an ocean floor with two

surface layers, 4381a. sound, loss of some building constructions, 3307.

spectra, computed for 2.7 micron H20 bands, 5254;

5255. VLF mode, east-west effect on across the earth's magnetic field, J 65D1-102, 47 (1961). VLF, transequatorial reception, 6510. Transmissions line-of-sight, atmospheric turbulence,

5117.

line-of-sight microwave, experimental study of phase variations, Mono.33. two microwave frequencies, TN307.

Transmittance, infrared, of certain silicate glasses, ef- fect of fluorides, 3193.

spectral, recalibration of NBS glass standards,

6337. vacuum ultraviolent, lithium fluoride, calcium

fluoride, barium fluoride, and sapphire, effect of temperature, 6717. Transmitted through sapphire (A12 03 ) foils, energy

spectra and angular distributions of electrons, 6043. Transmitter, radio-frequency, 4656. Transmitters, airborne television, operating in the UHF

television band, TN134 (PB161635).

ground-based, alteration of the electron density of the lower ionosphere, J 69D1-445, 83 (1965). Transparent, plastics at elevated temperatures, creep

behavior, 3169.

rigid mount, vacuum stopcocks, 5830. Transpiration, leaf, microwave refractometer, measure- ment of moisture boundary layers, 5466. Transport, calculations for electrons and bremsstrahlung, results of some recent, 9000.

electronic, strontium titanate, 6035. energy, harmonic crystals containing isotopic defects, momentum autocorrelation functions,

5494. function theory, Wigner, 4929.

matter in solids, 6197. processes, statistical mechanical theory, 3315.

properties, 4860. properties of copper and its dilute alloys: pure

copper, annealed and cold-drawn, low-temperature, 3245.

properties, time-correlation expressions for, 3475.

refrigeration, survey of research on frozen food, 5891. status of linear relations among heats, 9041. thermodynamic properties, NSRDS-NBS2; 4860. Transport coefficients, elementary derivation of timecorrelation formulas, 6036. frequency-dependent, in fluid mechanics, 6766. gases, method for finding the density expansion,

5477.

interaction energies, Li+H and O+H gas mixtures

at high temperatures, 5414. nonanlyticity of, and the complete density expansion of momentum correlation functions, 6890. time-correlation functions in statistical mechanics,

9116. Transportable ten picofarad capacity, construction and

behavior, 5259. Transversals and matroid partition, J 69B3-145, 147

(1965). Transverse, magnetic field, propagation of reflected shock wave, 6316. magneto-ionic propagation in inhomogeneous media, J 69D9-563, 1285 (1965). magnetoresistance, high purity aluminum from 4

to 30 deg K, 5831. propagation of electromagnetic waves in a cylin- drically stratified plasma, 6511. Trap, all-glass-sorption vacuum, 5906. Trapped, Brownian trajectories and polyelectrolytes, associated ions, 6244.

electrons, aurora, 5735. energetic radicals, 3358.

trajectories in Brownian motion, 6265. Trapping phenomenon in silver iodide, pressure-induced,

6312. Traveling, pressure waves associated with geomagnetic

activity, 4394. waves in lasers, stability, 1035. Treatment, alkali, and gamma radiation, influence of pyrolysis of polytrifluoroethylene, 6324. changes in relation between refractive index and

Young's modulus as the result of successive

heat, 5945.

heat, and properties of iron and steel, Mono.18. impact parameter, vibrational excitation, 6125. prevention and signs of frostbite, 6092. samples of size three, outliers, J 70B2-174, 141

(1961).

shell model, nuclear reactions, 9005. Trees, paths, and flowers, 8133. Trends, salaries of scientists and engineers, 5709. technology of automatic data processing, 3892.

Trial, field, 1959 CIE supplementary standard observer

proposal, 6069. new voltmeter standards, 5545. Triaxial tension at the heat of a rapidly running crack

in a plate, 3359. Triboluminescence in a mercury bubbler, 3892A.

Trichloride, praseodymium, analysis of the spectrum,

5809. titanium, heat of formation, J 64A6-74, 515 (1960).

Trichlorides, lanthanon, low temperature magnetic transitions, 6185. rare-earth, low temperature magnetic transitions, 6838. Trichromatic vision, normal, and dichromatic vision representing a reduced form of normal vision, 6342. 722
Triclinic form of sodium tetrametaphosphate tetrahydrate, 6484. Triethanolammonium ion in water from 0° to 50° C, acid dissociation constant and related thermo- dynamic quantities, J 64A4-56, 343 (1960). Triethylamine-boron, exchange processes in the reaction of boron trichloride, 5344.

Trifiuoride, nitrogen, and the N-F bond energy, heat of formation, 3228. Trifluoroacetone vapor, fluorescence and phosphorescence, 4353. Trifiuoromethyl bromide and methyl bromide applied

to the fuel and oxygen sides of the reaction

zone, inhibition of diffusion flames, J 654-118, 389 (1961).

1,2,2,-trifluorovinyl penyl ether and 2,3,4,5,6-pentaflu- orophenyl 1,2,2-trifluorovinyl ether and their polymers, 5544. Triggered fuse for load protection, 6512. Trihalides, boron, force fields, 6760. Trimetaphosphate monohydrate, lithium dipotassium,

5052. Na3 P309 , and the monohydrate, Na3 P3 09 • H2 0, the

structures Of anhydrous sodium, 9095. Trimethylamine-trimethylboron, addition complex, mi- crowave absorption, 3255.

structure, 3693. Trimethylarsine, microwave spectrum, 3260. Trimethylborane, high purity, preparation, J 66A1-140,

59 (1962). (trimechylamine) addition complex, microwave absorption, 3255. Trimming pattern, standard, for domestic cattlehides, CS26S-65.

2,4,6-Trinitro-m-cresol in water at 25° C, spectrophoto- metry determination of the ionization constant, J 64A6-78, 533 (1960).

(2,4,6-Trmitro-3,5-xylenol) in water at 25° C, Spectro- photometry determination of the ionization constant of dimethylpicric acid, J 64A6-77,

531 (1960).

Trioxide, arsenic, glass, condensation coefficient, 3483. boron, during the glass transformation, change in the heat capacity, 5943.

viscosity and density of boron, 9132. Triphenylene, pyrene, naphthacene, naphthaphene, and

chrysene, 6027. Triple Commission for Spectroscopy, Minutes of the Meeting at the Ohio State University, Columbus, Ohio, June 12, 1963, 6215. minutes of the meeting at Tokyo, Japan, 5491. Triplet state, acetone and biacetyl by azoalkanes, quenching, 8967. acetone and biacetyl by various unsaturated hydrocarbons, quenching, 8968. energy transfer from acetone to aliphatic aldehydes

in the gas phase, 6513. Triplet <—» triplet transitions in aromatic compounds,

extinction coefficients, 6753. Triply ionized praseodymium, analysis of the spectrum,

6600. Tris (hydroxymethyl) aminomethane, and its hydrochloride in aqueous solution at 25° C, osmotic and activity coefficients, 8929.

in 50-percent methanol, J 69A3-345, 263 (1965). Tris-complexes of copper, electron paramagnetic reso- nance spectrum, 6443. Tristimulus, spectral, values, 5116.

spectral, values for the CIE (u, v, w) uniform

spacing system, 6385.

values, spectral, variability, J 65A6-129, 475, (1961).

Tritiated, toluene standard of radioactivity, calibration of NBS, 9061. water standard, recalibration of NBS, 5884.

water standards, NBS, 6464.

Tritides, diatomic hydrides, and deuterides, ideal gas thermodynamic functions and isotope exchange

functions, Mono.20.

Tritium, carbon-14 in studies of isotope effects, 5106.

labeled carbohydrates, synthesis, TN274.

Tritium-labeled compounds:

V. Radioassay of both carbon-14 and tritium in

films, with a proportional counter, J 64A4-61, 363 (1960).

VI. Alditols-l-t and alditols-2-t, J 64A5-68, 433

(1960) . VII. Isotope effects in the oxidation of n-mannitols- C

14 and D-mannitols-t to D-fructoses, J 65A5-

125, 441 (1961).

VIII. Proof of the position of the tritium in D-glucose-6-t and D-glucitol-5-i, J 66A1-138, 29

(1962). IX. Determination of isotope effects in reactions

yield water-£ from nonvolatile reactants. Oxidation of aldoses-Z-t with iodine, J 67A6-241,

569 (1963). X. Isotope effects in the oxidation of aldoses-i-t with bromine, J 68A2-262, 145 (1964). XI. Mechanism for the oxidation of aldehydes and

aldoses-Z-t with sodium chlorite, J 68A3-276, 301 (1964). Tritunation, time, and test temperature on compressive

strength of dental amalgam, effect of rate of

loading, 5312. Trivalent cations, solid state reactions involving oxides, J 65A4-116, 345 (1961). Trivinylbenzene, thermal stability of polydivinylben- zene and of copolymers of styrene with divinyl- benzene, J 65A3-108, 243 (1961). Troposcatter propagation, reception of aircraft inter- ference patterns, J 67D4-276, 405 (1963). Troposphere, attenuation of radio waves, 5930. concentrically stratified, with a smooth profile on

the theory of wave propagation. Part I: Dis- cussion of the extended W.K.B. Approximation, J 64D5-82, 467 (1960).

correlation matrix for radio waves, 5265. exponentially varying refractivity, range-error, J 66D6-228, 695 (1962). inferring the refractive-index structure, electro- magnetic scattering experiments, J 69D6-521,

881 (1965).

link, weather and reception level—annual and

short-term correlations, J 65D2-113, 155

(1961) . physical characteristics, J 64D6-96, 607 (1960). radio waves, techniques for computing refraction, TN97 (PB161598).

residual range and range rate errors, 5643. Tropospheric and ionospheric scatter, radio transmission, 3737. Tropospheric, circuits, long-distance, path antenna gain and comments of properties of 400 mcps, 5555. communication links, performance, singly and in tandem, 5585. communication links, singly and in tandem, 4854.

fields and their long-term variability as reported by TASO, 3893. forward scatter propagation, carrier-frequency dependence of the basic transmission loss, 3456. gaseous absorption of radio waves, the biexponential nature, J 69D6-522, 885 (1965). interference between space /earth and terrestrial

stations, 4493. interference between space system earth terminals and terrestrial stations, TN180.

layer, influence of refractive index profile in VHF

reflection, 6129. 723
layer, note on VHF reflection, J 68D7-380, 846

(1964).

layers, undulating reflection of radio waves, J 67D6-294, 609 (1963). observed, refraction with values computed from the surface refractivity comparison, 4007. point-to-point propagation and siting considerations, TN95 (PB161596).

radio refractive index, biexponential nature, 4011. radio wave scattering, bibliography, TN80 (PB161581).

refraction, Mono.92. refraction and attenuation of radio waves, 6515. refraction in earth-space links, 6719. refractive index and apparent radio path length, time variations, 3423.

relay, link, phase instability, 5560. scatter circuits, long distance, 4217.

scatter communication circuits, nomograph for predicting the performance of, 5149.

scatter propagation, power spectrum of the variation of a carrier envelope, 3344.

scattering, J 69D6-521, 881 (1965).

single, communication links and for several links

in tandem, performance predictions, TN102

(PB161603).

temperature structure from ground-based measure- ment of oxygen emission, 6549. Tropospheric communication circuits, equipment characteristics and their relation to system per- formance, TN103.

long distance, 4853. transmission loss predictions, TN101, Vols. 1 and 2. Tropospheric propagation, 6514.

affecting space communications, J 68D5-361, 558

(1964). experimental results of investigations, J 64D6-96,

615 (1960). microwave line of sight, paths and associated subjects, bibliography, TN302.

monthly median refractivity, 1491A.

prolonged space-wave fadeouts, J 66D6-227, 681

(1962) ; TN88 (PB161589).

radio waves, bibliography, TN304.

(theories), J 64D6-96, 612 (1960). Tropospheric radio propagation, coherence theories, 5950.

effect of multiple atmospheric inversions, J 65D4-

142, 385 (1961). Trucks and trailers, 5096. Truncations in the method of intermediate problems for lower bounds to eigenvalues, J 65B2-48, 105

(1961). Tryptophan in dentin and bone protein, fluorometric demonstration, 6076. Tube, bores, circumferentially uniform electroplating, 3999.

capillary, viscometers, Mono.55. comparative rate measurements with a single-pulse, 5958.

distensible, viscous liquid flowing, appreciable mass, 788A.

electron, interchangeability chart, 4629.

electron, materials, use of a vacuum microbalance

in studies, 3349. gated beam, relaxation oscillator, 1847A.

impedance, portable, 5157. RF vacuum, voltmeters, precision calibration, TN121 (PB161622).

shock, using CN as a thermometric molecule, spec- troscopic temperature measurements, 3782. thermal decomposition of 2,3-dimethylbutane in a

single-pulse shock, 9108. Venturi, quality meter, 5064. wafer, ceramic, 3157.

Tubes, and predicted stark-effect shifts in the spectrum

of neutral germanium, correlation between ob- served wavelength shifts produced in electrodeless discharge, 5977. Tubes, microwave, beam-type low-noise, J 64D6-96,

763 (1960). microwave, tabulation of data, H70.

receiving, tabulation of data, H83.

small-bore, internal surface, 3555. Tubing, two cases of stress corrosion cracking in copper,

9121. Tune, line, multistub coaxial, 5879. Tungsten, desorption, 5015. filament lamps, 400-700 m ix, memorandum on a procedure for obtaining spectral radiant intensities, 3251. helical-spring microbalance, 5097.

isotopic mixing in CO chemisorbed, 6820. rhenium, polycrystalline, kinetics of positive ion desorption, 5767. rhenium thermocouple to 2000° C, studies on, J

67C4-146, 337 (1963) ; 5712. (Wll), second spectrum, J 68A2-270, 207 (1964).

surface, field-evaporated, field desorption of thori- um, 6755. vapor pressure and heat of sublimation, J 69A5-

363, 417 (1965). Tungsten on tungsten in atomic detail, Monte Carol and

statistical calculations vs experiment, 6650. observation with the field ion microscope, 6651. Tuning, linear, microwave cavity, 6831A.

reflectometer, semi-automatic techr 'que, 6559A.

Tunnel, diode large-signal equivalent ci cuit study and

the solution of its nonlinear differential equations, J 66C1-86, 45 (1962). diode large signal simulation study, 4395. heating and cooling of air flowing through an

underground, J 65C3-66, 157 (1961). Tunnelling between a normal metal and a superconductor, 5098. Turbidity measurements, status of sugar color, 5700. Turbine, expansion, low capacity, high-speed, gas-bear- ing-supported, refrigeration system, 5161. flowmeters, 4829. flowmeters, performance characteristics, 4218. handpieces, 4517. miniature helium expansion, gas-lubricated bearings, 4981. type flow-meters in cryogenic service, 6656. Turbo-expander, helium, miniature, cryogenic refrigeration system, 5143. Turbulent characteristics, radio refractive index near

the ground, 5807.

field, higher-order skewnesses, 6783. Turbulent, field, two-dimensional probability distribution, 9122. radio refractometer to measure water vapor, 9101. spectrum of stationary homogeneous and magnetohydrodynamic, 9032. theory, relation to ionospheric scatter propagation

experiments, J 64D4-62, 301 (1960). Turner, Czerny, spectrometer, optimization, 6276. Turning-point problems, error bounds for asymptotic

expansions, 6048. error bounds for first approximations, 5340. Tutte and Nash-Williams theorem and Lehman's switch- ing game, J 69B1&2-135, 73 (1965). Twenty-two ISCC-NBS centroid colors of maximum contrast, 9120. Twenty-year atmospheric corrosion investigation of zinc-coated and uncoated wire and wire products, 4396. Twilight, delayed ionospheric changes; conjugate obser- vations of solar proton events, 6655. 724
glow [01] 5577 and [01] 6300, photometric observations, 3712. sodium emission—1 : Observations from southern hemisphere station, 6262. sodium emission—2: Theoretical model of sodium

abundance, 6263. spectra near the equator, 3894. Twin, boundary in aluminum, planar, 5567. channel microwave attenuation measurement sys- tem 5195; 6598. Twins, branching of electrodeposited copper dendrites, growth, 6108. pseudopentagonal, electrodeposited copper dendrites, 6321. Two, arm waveguide junction, maximum efficiency, 5463. assumptions in the theory of attractive forces be- tween long saturated chains, 5832. carbon positions and derived heats of formation of several alkyl radicals, relative rates : hydrogen atom addition to olefins, 6785. cases of stress corrosion cracking in copper tubing,

9121. channel nulling method for measuring attenuation

constants of short sections of waveguide and

the losses in waveguide joints, 6573.

crystal scintillation pair-spectrometer, 6516. dimensional probability distribution in a turbulent

field, 9122. dimensional representations, real, modular group and related groups, 8981. dimensional treatment of mode theory of the propagation of VLF radio waves, J 68D1-320, 81

(1964).

electron excitation levels of helium, classification, 5235.

electron excitation states in helium, 9123. electron systems, compound-atom states, 6648.

electron systems, Gaussian correlation functions,

6101. factor classifications with respect to life tests, 3428. flow counter for the detection of alpha and beta

particles in smear samples, 5581. frequency varactor, 4827. frequency varactor, comment on parametric behavior, 5241. intermediate enzyme reactions, 4565. matrix eigenvalue inequalities, J 66B2-73, 57

(1962). nearly equal potential, method for comparing di- rectly in parts per million, 5476.

oscillator scan stability, 3895. parameter family of hyper-Poisson distributions, 5895. picnometers of increased convenience and precision, J 69C1-178, 1 (1965). point and four-point probe resistivity measurements

on rectangular bar-shaped semiconductor samples, TN241.

point and single-point loading for determining the strength of flat glass, 5962. pressure humidity generator, NBS, and the NBS

standard hygrometer, comparison between,

6542. rare earth double nitrates, 4932. remote, atomic time scales, synchronization, 5719. stream plasma instability as a source of irregularities in the ionosphere, 5833. terminal, coaxial, conical capacitor, analysis, Mono.46.

terminal dielectric measurement up to 6 X 10" Hz, J 69C3-195, 165 (1965). terminal method, measurements, 4926. theorems on matrices, J 66B3-76, 91 (1962).

theoretical techniques on the propagation of long wave-length terrestrial radio waves, 5538.

2,3-Dimethylpentane and 2-methylhexane as a test mixture for evaluating highly efficient frac- tionating columns, J 67A1-189, 15 (1963). Two-and-three electron systems, correlation effects, 5264. Two- and three-loop superdirective receiving antennas,

J 67D2-258, 215 (1963). Two-knife-edge direct-reading balances, weight cali- bration schemes, J 66C1-85, 33 (1962). Two-phase, choking, flow of hydrogen, 5232.

critical flow studies related to reactor systems, cryogenic fluid, 5981. flow of hydrogen, nitrogen and oxygen, some ideal- ized solutions for choking, 5673. single-component fluid flow, 4855. Twyman interferometer, precision for evaluating pri- mary aberrations of lenses, J 69C4-205, 251

(1965). Type, filling materials and cements, review of zinc oxide-eugenol, 6559. pure wave, new differential operator, 6552. 304 stainless steel, at 455 to 615 F, stress-corro- sion cracking, 5705. superconductors, surface currents, 6412. Types, blackout, their time variations and the mechanisms producing them, 4381. FeNbOj, ixiolite and other polymorphic, 6167. Typical, daylight as a function of correlated color temperature, 6383; 9027. systems, characteristics, their comparisons, signalto-noise, 5658. Tyratron ringing circuit, 4830. U

U(12), W-spin analysis of weak decays, 9142. U spin, 5537.

equalities and 0ctet symmetry breaking, 6519. Ultra high frequency and very high frequency, power

generators for RF instrumentation, TN77

(PB161578).

signal characteristics observed on a long knife- edge diffraction path, J 65D5-149, 437 (1961)

;

4407. Ultra high frequency, band, low input VSWR coaxial diode switch, 5875.

electrical quantities, measurement and standardization of LF, 6853. propagation beyond the horizon, note regarding

the mechanism, 3388.

signals, moon-reflected, computation and measure- ment of the fading rate, J 64D5-81, 455

(1960). Ultracentrifuges, equilibrium, 4534. Ultraglow frequency bridge for dielectric measurements, 3973. Ultra-high and high vacuum, role of cryogenics in the production of, 6476. pressures on glass, 4621. speed image dissecting camera for photographing strong shock waves, J 66C1-105, 297

(1962). vacuum ultraviolet monochromator, 5099. Ultra low-conductivity water by electrophoretic ion exclusion, J 64A6-76, 527 (1960). Ultra low frequency bridge for dielectric measurements, J 65C1-52, 23 (1961). Ultramicroanalysis, mass standards, 4985. Ultrapure reagents, TN273.

Ultrasonic, determination of crystalline resonances and sound velocities using NMR techniques,

9124. waves in melting and molten polyethylene, deter- mination of the propagation constants, 5987. Ultrasonically induced nuclear spin transitions in antiferromagnetic KMnFa, 6517. Ultrasounds induce flaking of ceramics from metals,

5100. 725
Ultrastability, attainment, gage blocks of superior

stability, 6097. Ultraviolet absorption in solid noble gases, line shape,

4144. absorption spectra, far, rare gases, line profiles, 6831. absorption spectra of ammonia in solid argon at 4.2°K, 4397. absorption spectra, vacuum, oxygen in liquid and

crystalline argon and nitrogen, 6523. absorption spectrum, vibrational fundamentals of CF2 N2, 9131. band spectrum of CN, pressure dependence of ro- tationally perturbed lines, 3723.

electron energy absorption, optical properties of beryllium, 8925.

far, gas-phase photolysis of cyclohexane, 6770;

9080. Germanium, ultraviolet, Ritz standards, 4672. infrared spectra of the free radical NCN, 6850. infrared spectrum of the free radical FCO, 6852.

light, nature, which accompanies the decomposition

of some azides, 3686.

lines, rocket, radiation transfer problems, 5617. monochromator, 5099. multiplet table, C488, Sections 3, 4, and 5. photochemistry, vacuum, 5840; 5841; 6525; 6524; 9127; 9128; 9129; 9130. photometer, simple, 3300. radiance, high, stable arc source, 6563. realm of spectroscopy, 6486.

reflectance, vacuum, evaporated aluminum before and during oxidation, 5542.

region, vacuum, intense resonance line sources for photochemical work, 6141. spectrophotometry, 5101. spectrum, 5034.

stability of crosslinked polycaprolactam systems, J 66A6-184, 489 (1962). thermopiles for absolute radiometry, 8921. transmittance, vacuum, of lithium fluoride, calcium

fluoride, barium fluoride, and sapphire, effect of temperature, 6717. Ultraviolet vacuum, absorption spectra of solid methane, ammonia, and ice, 3416. absorption spectra of solid xenon, krypton, and

argon, 3416A.

absorption spectrum of the "pink" afterglow of

nitrogen, 6428. aluminum, 4817.

electron energy losses, optical constants, 6267. method for measuring polarization, 6550. photochemistry, 5110; 5111; 5112. photolysis of water and ammonia, 5112. vacuum, photolysis of ethane: molecular detach- ment of hydrogen, 4403.

visible spectroscopy to identify carbonyl com- pounds in photodegraded plastics, 9100. Umpire determinations, M260-8.

Uncertainties associated with proving ring calibration

error, 9125.

calibration, 5102. Uncertainty, TN288.

Uncle Sam's house of 1,000 wonders, 354A. Uncoated and coated cellulosic materials, effect of moisture on surface flammability, 6714; 9076. Underground corrosion of aluminum and steel, study by polarization techniques, J 65C4-80, 271

(1961).

fallout shelter, 4637.

fallout shelter, environmental factors, 3532.

installations, protected, available heat sinks for, 3149; 3984.

shelter, family-size, 4322.

shelters, thermal environment, 4743.

spaces, occupied, finite cover using a digital computer, numerical analysis of thermal environ- ment, 6236.

Underwater sound, measuring velocity, 1771A. Undisturbed and disturbed soils, results of NBS corrosion investigation, 8999. Unevaluation of automatic indexing and classification, M269, p. 211. Uniaxial crystals, ray-tracing formulas, 4880. Unified grain-size standard, 4091. Uniform chromaticity transformation, the CIE dia- gram, lines of constant correlated color temperature based on MacAdam's (u,v), 5449. external pressure, 5045. spacing system, CIE (u, v, w), spectral tristimulus

values, 6385. Uniformly magnetized electron-positron gas, electro- magnetic wave propagation and relativistic damping effects, 6727. spaced optimum endfire arrays with equal sidelobes, directivity, J 69D9-560, 1249 (1965). Unimolecular reactions, oscillator models, 4210. Uninsulated lines, transfer of liquid hydrogen through,

3890. Union, International, role, pure and applied chemistry,

5792. Uniqueness theorem for entire functions, 6574. Unit length of cylindrical three-terminal capacitors with thin dielectric films on their electrodes, some results on the cross-capacitances, 3777. photosynthetic, theory of energy transfer, 5171.

prefixes, recommended; defined values and con- version factors; general physical constants, M253.

resistance, NBS, evaluation based on a computable

capacitor, J 65A3-97, 147 (1961).

time, considerations relative to an atomic definition, 6374.

voltage, establishment and maintenance, at NBS

Boulder Laboratories, 5752. Unitary summary in photoproduction and other electro- magnetic interactions, 5834. symmetry, 5537. symmetry (SU3 ), experimental predictions, 5351. symmetry selection rule and its application to new

resonances, 5896. United States standard for the colors of signal lights, H95.

Units and constants, electrical engineering, M268.

currently evolving in the electrical field, simplifi- cation of systems, 3301.

electrical, maintenance, at NBS, 5458.

electrical, systems, Mono.56.

international system, 9083. measurements, radiological (ICRU) 1959, report

of the International Commission, H78. measuring variations in measurements, 903A.

quantities, dosimetry in diagnostic radiology, 5607.

quantities, radiation, H84.

standards of electrical measure, 6518. systems, meter, national and international aspects, wave length definition, 3369. systems of electrical, J 66C2-94, 137 (1962). weight and measure (United States customary and

metric) definitions and tables of equivalents, M233.

Universal color language, 6575.

ratio sets, some modifications in methods of cali- bration, TN220.

time control of the Arctic and Antarctic F region, 5103. Universe, distribution to students in samples from a

rectangular, 5998. University of Alabama, University, Alabama. J 68D5-

364, 631 (1964). Colorado, Boulder, Colorado, and the NBS, Observatory report, Joint Institute for Laboratory

Astrophysics, 6241.

Florida, Gainesville, Fla. J 68D5-364, 635 (1964).

Illinois, Urbana, 111. J 68D5-364, 639 (1964). 726
Michigan, Ann Arbor, Mich. J 68D5-364, 640

(1964). Texas, Austin, Tex. J 68D5-364, 649 (1964). Unmodulated twin channel microwave attenuation measurement system, 5195; 6598. Unorthodox predictions, 9023. Unorthodoxy in science, 4397A. Unsaturated hydrocarbons, quenching of the triplet state of acetone and biacetyl, 8968. standard cells, effect of vibration and shock, J

66C2-89, 85 (1962). Unsaturation, simple method for introducing non- thermal ; action of zinc dust and sodium iodide

in N, N-dimenthylformamide on contiguous, secondary sulfonyloxy groups, 6580A. Unstable detonation, near a hypervelocity missile, 5836. Unsubstituted heptuloses, 6417. Unusual radio signals enhancement in the far east, 3362. Upholstery, furniture, vinyl fabrics, CS273-65. Upper atmosphere, 4398. atmosphere, structure and physics, 6482. bounds for the determinant of a row stochastic matrix, J 70B2-178, (1966). ionosphere, plasma resonances, 5569. Uranium-bearing sandstone, fractionation of uranium

isotopes and daughter products in weathered

granite, 6084. concentrates, M260-8.

dioxide powders; flexural strength of specimens,

3543.

electroplating, 4856. high-precision coulometric titrations with special reference to the determination of, 6778.

isotopes and daughter products in weathered granite and uranium-bearing sandstone, fractionation, 6084. low activity, radiochemical determination, 6331. monophosphide, vaporization, 5834. sandstone, isotopic fractionation, 5433; 6084; 6166;

6819. URSI, almost fifty years, J 65D4-134, 317 (1961). URSI National Committee Report, XIII General Assembly, London, England, September 1960: Commission 1. Radio measurement methods

and standards, J 64D-96, 591 (1960). Commission 2. Tropospheric radio propagation, J 64D6-96, 607 (1960). Commission 3. Ionospheric radio propagation, J64D6-96, 629 (1960). Commission 4. Radio noise of terrestrial

origin, J 64D6-96, 637 (1960). Commission 5. Radio astronomy, J 64D6-96,

655 (1960). Commission 6, Radio waves and circuits, J 64D6-96, 671 (1960). Commission 7. Radio electronics, J 64D6-96, 751 (1960). URSI National Committee Report, XIV General Assembly, Tokyo, Japan, September 1963: Commission 1. Radio measurements methods and standards, J 68D5-360, 523 (1964). Commission 2. Tropospheric radio propagation, J 68D5-361, 537 (1964). Commission 3. Ionospheric radio, J 68D5-362,

569 (1964). Commission 4. Magnetospheric radio, J 68D5-

363, 597 (1964). Commission 5. Radio and radar astronomy,

J 68D5-364, 631 (1964). Commission 7. Radio electronics, J 68D5-365,

655 (1964). United States and certain foreign countries, scientific and engineering manpower, 5709. United States, basis of electromagnetic measurements,

6487. Department of Commerce for advancing state

science and technology, current programs,

6674. mechanical translation, Japan Joint Conference,

6860. NBS, polymer research, 5573; 5574. Naval Research Laboratory, Washington, D.C., J

68D5-364, 649 (1964).

participation, international standardization, 5835. standardization of plastics, 9037. Use, analog computer in side-on arc spectroscopy,

6488. bulge test for determining the mechanical properties of stainless steel foil, 4401. carbon resistors as low temperature thermometers

in the presence of stray rf fields, 3897.

crystal to display high energy X-ray images, 3363. disodium m-benzenedisulfonate as a hardening

agent in a Watts nickel bath, 3898. dual-polarized broad beam antennas to determine

the extra terrestrial intensity of the cosmic

radio noise at high frequencies, 5808.

electronic computers for aid to medical diagnosis,

3364. ellipsometry for in situ studies of the oxidation of metal surfaces immersed in aqueous solutions, M256, p. 131. equation of hydrostatic equilibrium in determining

the temperature distribution in the outer solar atmosphere, 3899.

finite polynomial rings in the factorization of the general polynomial, J 69B3-153, 189 (1965). Gaussian orbitals for atoms-in-molecule calculations, 4400. general purpose coding system for statistical cal- culations, 9126. geo-stationary satellites for the study of iono- spheric electron content and ionospheric radio- wave propagation, 3877. 2,2,4,4,6,8,8-heptamethylnonane as a primary diesel

fuel, 3879. high-strength ceramics in vibration transducers,

6520. incoherent scatter technique to obtain ionospheric temperatures, 3900. index of refraction as a means for study of plasma

configurations, 6521. interferometer observations of satellites for meas- urement of irregular ionospheric refraction, 4382. interlaboratory noise standard, waveguide noise- tube mount, 6530.

liquid hydrogen, safety in, 6355. logarithmic frequency spacing in ionogram analysis, J 64D5-87, 501 (1960). operational amplifier with Helmholtz coils for re- ducing ac induced magnetic fields, 4399. phase-integral method to determine the reflection properties of a stratified ionosphere, J 69D4-

487; 511 (1965). photographic film, personnel dosimetry, 5837. polarization fading of satellite signals to study the

electron content and irregularities in the iono- sphere, J 64D4-66, 355 (1960); 3878. refractive index diagrams for source-excited anisotropic regions, J 69D2-450, 155 (1965). sugar analysis, special techniques, 5680. surface refractivity in empirical prediction of total atmospheric refraction, J 67D 1-240, 31 (1963). terahertz photobeats for precise velocity-of-light measurements, 6489. thermistor for detecting eluent fronts in liquid-soild chromatography, J 65C4-77, 245 (1961). transforms to sum array factors, 6643. transistors in Van de Graaff source leak controls, 5838. vacuum microbalance in studies of electron tube

materials, 3349. 727
Useful radiation from an underground antenna, J 65D1-

106, 89 (1961). Uses and technology of liquid hydrogen, 6157. Uses, liquid hydrogen, technology, 6424. oblique ionograms in frequency utilization, 6490.

possible, sugar grove radio telescope facility in the

technical programs of NBS, 5781. Using, air-gap method for the precise determination

of the dielectric constant and loss angle of

solid-disk specimens, techniques, 6423.

digital computers in the design and maintenance

of new computers, 4402. elastomers for static cryogenic seals, recent devel- opments, 6638. equations of state and specific heats, functions for the calculation of enthalpy, entropy and inter- nal energy for real fluids, 6093. incoherent scatter technique, equatorial electron density profiles to 5000 KM, 5336. infrared spectroscopy, stratospheric moisture, measurements, 5704. U.S.S.R. high-altitude, nuclear tests, VLF phase dis- turbances following, 5848.

Utility of the Tait equation relating volume and pres- sure in the study of transitions in polymers,

6522.

Utilization, frequency, uses of oblique ionograms, 6490. radio spectrum, propagation and technical factors, 6315.

scientific and engineering manpower in the U.S. and certain foreign countries, 5709. tritium and carbon-14 in studies of isotope effects, 5106. Utilizing the scattering resonance, helium, electron monochromator, 5330. Ultraviolet solar spectrum, 4202. V V spin, 5537. Vacancies in dilute alloys, 9059. Vacuum and low pressure measurement, bibliography and index, Mono.35.

applications, leak-resistant rotation seal, J 67C4-

145, 335 (1963).

ball valve, TN263. chamber for the deposition of carbon and shadow

casting of metals, 3901.

distillation, metals to radiochemical separations,

5665. gages, calibrating, 4952. Germanium, ultraviolet Ritz standards, 4672. heating, emittance, 3158. high and ultra-high, role of cryogenics in the production, 6476. 2537 A light, effect of deuteration and temperature upon the photolysis of cellulose, 6013. 2537A light, photolysis of cellulose, 6287. microbalance techniques, 4712; 4985; 5107; 5109.

orifice flow characteristics of liquid nitrogen and

liquid hydrogen discharging into a vacuum,

5883. photolysis of solid ethane at 77°K, 5108. RF, tube voltmeters, precision calibration, TN121

(PB161622).

spectrograph for combustion study, 903B.

stopcocks, transparent rigid mount, 5830. system for use with a microbalance, 5109. tight cylinder joints and ball-and-socket joints, 5839.

trap, all-glass-sorption, 5906. ultra-high, ultraviolet monochromator, 5099. Vacuum-ultraviolet absorption coefficients of water and

methane, deuterium isotope effect, 6691. absorption of solid methane, ammonia, and ice, 3416. absorption spectra of oxygen in liquid and crystalline argon and nitrogen, 6523.

absorption spectrum of the "pink" afterglow of nitrogen, 6428. aluminum, 4817. electron energy losses, optical constants, 6267. method for measuring polarization, 6550. photochemistry, 5110; 5111; 5112; 5840; 5841;

6524; 6525; 9127. photolysis of ethane at high temperature, 9128;

9129. photolysis of ethane in liquid-nitrogen solution, 9130. photolysis of ethane: molecular detachment of hydrogen, 4403. photolysis of water and ammonia, 5112.

reflectance, evaporated aluminum before and dur- ing oxidation, 5542.

region, intense resonance line sources for photo- chemical work, 6141. transmittance of lithium fluoride, calcium fluoride, barium fluoride, and sapphire, effect of temperature, 6717. Valence states and electrode potential. Some electro- chemical aspects of germanium dissolution, 9017. Valences of the elements in analytical procedures, 3902.

Validity, crystal field theory, as applied to rare earth

ions, 5809. Einstein-Smoluchowski theory of light scattering, 6264. Lorentz-Lorenz equation near the critical point, 8922.

validity of some approximations to the Appleton- Hartree formula, J 65D4-136, 323 (1961). Valley minima between the E and F regions in the

arctic, magnetoionic phenomena permitting ob- servation, 3845. problem with a ray tracing program, 4954. Value, best, 4410. Faraday, 6491. problem, pointwise bounds in the first bi-harmonic boundary, 5572. Values, extremely low, spectral irradiance, standard,

6564. prescribed, given points, the zeros of infrapoly- nomials, 5811. quantity p(<iH7Ci) for buffer solutions from 0 to 95°C, acidity functions, J 65A6-132, 495

(1961).

spectral tristimulus, for the CIE (n, v, w) uniform

spacing system, 6385. vector ratios, nomographs for computing real, imaginary and absolute, 6889. Valve, constant volume, III. NBS gas thermometer,

6879. Vanadium, 5828. compounds, corrosion of type 310 stainless steel, 4321. oxide-niobium oxide, phase equilibria in the system, J 69A2-333, 119 (1965).

oxytrichloride (vandyl (V) chloride), 3903. Van Allen belts, dependence of Jupiter's decimeter

radiation on the electron distribution, J 69D12-

589, 1557 (1965).

radiation zone, outer, correlation of visual and

subvisual auroras, 4018. Van de Graaff source leak controls, use of transistors, 5838. Vapor, biacetyl, phosphorescence and fluorescence, 2379A. boundary layers in biological systems, the measure- ment of water, 9086.

dipole moment of PCI, F from the nonresonant microwave absorption, 6695. mass spectrum of yttrium chloride, 9085.

radiolysis of propane-A in the presence of other hydrocarbons, 5066. rubidium 87, hyperfine transitions, 3230A.

snakes in solid argon, 5842.
state, energy levels of Pr3+

, 6737. turbulence, use of the radio refractometer to measure water, 9101. water, bands at 2.7m line parameters and computed spectra, Mono.71.

water, boundary layers in biological systems, 5855. water, in molten alumina, solubility, 6478. yttrium chloride, mass spectrum, 6846. Vapor phase, fluorescence and its relationship to the

photolysis of propionaldehyde and the butyraldehydes, 5065. gamma-radiolysis of azomethane, 4404. growth kinetics of Hg and K whiskers by field emission, 5113. growth kinetics of potassium and mercury crystals, 6526. growth rates of potassium crystal, 4674. photolysis of formic acid, 4405.

radiolysis of propane-c?s in the presence of other hydrocarbons, 5114. Vapor pressure, chemical elements, 6045. curve, properties, 3691. comparisons, 1962 He3 scale of temperatures, J

68A6-301, 547 (1964).

20° K equilibrium hydrogen, 5067. heat of sublimation of rhenium, J 70A2-393, 175

(1966). heat of sublimation of tungsten, J 69A5-363, 417

(1965). lowering of aqueous solutions, additivity rule, J

69A4-356, 365 (1965). measurements, isopiestic, of the ternary system,

sorbitol-sodium chloride-water at 25 deg, 5432. palladium, J 66A2-149, 177 (1962). Vapor pressures, organic compounds in the range be- low one millimeter of mercury, TN70 (PB161571).

platium, iridium, and rhodium, J 65A4-113, 289

(1961). ruthenium and osimum, J 68A3-280, 325 (1964). Vaporization and fusion, temperature, pressure, heat, and entropy change of transition, 5728. chlorotrifluoroethylene (C2F3 F1), heat of vaporization, 775A.

fractional distillation, 4418. refractory substances, rate, 3741A. uranium monophosphide, 5843. Vapors, alkali metal and organic halides, inhibition of opposed-jet methane-air diffusion flames, 5411. Vapour-equilbria, high-pressure, thermodynamic representation, 5818. Vapour phase and similarity of the process to electro- deposition, deposition of metals, 4029. pressure, 5115. Varactor, two-frequency, 4827; 5241.

Variability, between-laboratory, reducing the, of TAPPI standard T414 m-49, internal tearing

resistance of paper, effectiveness of a refer- ence material, 5202. spectral tristimulus values, J 65A6-129, 475 (1961) ; 5116. Variable bandwidth, double-tuned transformer, TN237,

p. 5. characteristic impedance coaxial line, 6576. complex, method for computation of error function, 6551. frequency method, 3349A. impedance power meter, and adjustible reflection

coefficient standard, J 68C1-148, 7 (1964). parameter direct-current switching filter, 4459. phase shifter, TN237, p. 3. Variables associated with expansion in potential sulfate expansion test, BSS5, Part 2, p. 1. effect of blowing, durability of coating-grade as- phalts, 6006. noncommuting, generating functions for formal power series, 3556.

two, quantity measured at combinations of several

levels, TN259.

Variance classification system for DF bearings, Brooke,

J 65D3-128, 255 (1961). estimation of weighting factors in linear regression and analysis, 6051. lambda, and its application to Tappi standard T 414 m-49 for internal tearing resistance of paper, 5923. radio frequency caused by atmospheric turbulence

in line-of-sight transmissions, 5117. Variances of position lines from fixes with unknown

target positions, estimation, J 65D3-129, 263

(1961). Variant of the two-dimensional Riemann integral, J

69B3-152, 185 (1965). Variation, annual in E'-layer ionization, dependence of

critical frequency of the ionospheric E'-layer on

the solar zenith angle, 6680. Blaschke products, the segmental, 5795. glass temperature with pressure in polypropylene, J 68A3-273, 273 (1964).

localized of the paths of two paraxial rays, 5141. natural, copper isotopes and the atomic weight of

copper, 6880. surface electrical resistance of lead iodide films with RH at room temperature, 6567. thermodynamic ideal temperature in the polysty- rene-cyclohexane system, 3365. Variational principles, generalized, electromagnetic

vibrations; application to the theory of waveguide junctions, 5376.

solution for the admittance of long cylindrical antenna, J 68D3-347, 311 (1964). treatment of electron-hydrogen atom elastic scat- tering, 3904. Variations, atmosphere near the 100-kilometer level, diurnal and seasonal, 5999.

characteristic, in the antarctic ionosphere, 6627. composition of high atmosphere from F-region measurements, implication of diurnal, seasonal and geographical, 6255. diurnal phase, of GBR (16 kilocycles per second) observed over a path of 720 kilometers, 6349. [OI] 5577 A emission in the upper atmosphere,

4406. equatorial ionospheric, during geomagnetic storms,

5337. extremely low frequency, quartz oscillators, spec- trum analysis, 5683. ^-region electron density profiles at Puerto Rico, nighttime, 6222. frequency of occurrence of sporadic E, 1949-1959, TN117 (PB161618) ; 5118. ionospheric data by numerical methods, representation of diurnal and geographic, 8993.

ionospheric, during geomagnetic storms, 5429. magnetic disturbance, the conjugacy, 5740. phase path of man-made one-hop whistler mode

signals at 18.6 kilocycles per second, 5844. response of microwave refractometer cavities to atmospheric, 6475.

structure, quiet ionosphere, temperature control, 5725. studying the lunar tidal, D region of the ionosphere by means of a very-low-frequency phase ob- servations, 5713. summer intensity, if [OI] 6300 A in the tropics, J 66D2-181, 145 (1962). surface tension calculated with improved approxi- mation for activity coefficient, 3905.

synoptic, and vertical profiles of large-scale iono- spheric irregularities, 5720. V.L.F. propagation, phase, 6284. Various materials to hard tooth tissues, adhesive bonding, 6581; 6582; 6583; 6584; 6585.

relations obtained from SU3 , comparison of experi- mental reaction cross sections, 5961. 729
temperatures, equilibrium pressure of oxygen over Mn2OvMna O.,, 6046. Vaterite type structures in the borates, carbonates, and

nitrates, infrared, J 65A-100, 173 (1961). Vavilov distribution, tabulation; energy loss straggling

of protons and mesons, 6041. Vector, direction of the force on a dislocation and the

sign of the Burgers, 9070. images in document retrieval, M269, p. 163. ratio computer using nomograms, TN250.

ratios, nomographs for computing real, imaginary and absolute values, 6889.

velocity distribution of low density molecular beams, 3933. Vectors, groups preserving ordering, J 70B2-179, 159 (1966). Vegetated and soil surfaces to reflected and emitted

radiation, 6630.

Vehicles, cylindrical hypersonic, radiation patterns from plasma enclosed, J 69D10-568, 1335

(1965).

refrigerated, free evaporation of liquid nitrogen, measuring the cooling load, 6859. refrigerated, stationary, cooling load, laboratory study of effect of solar radiation, 5439A.

space, coatings, 3470. Velocimeter for measuring the speed of sound in the

sea, 4440.

transistorized, for measuring the speed of sound

in the sea, 3357.

Velocities, non-thermal, within loop prominences, 6835. strain waves resulting from impact: stress-strain relationships in yarns subject to rapid impact

loading, 3795. using NMR techniques, ultrasonic determination of

crystalline resonances and sound, 9124. Velocity dependence of nuclear potentials, 4275. depth relationship in microelectrophoresis cell for asphaltenes in nitromethane, 5845. gradient, linear, term in time-dependent paid dis- tribution function, 5448.

particle, collisions between liquid drops and solids, note, J 64A6-71, 497 (1960). sound in helium gas, 4465. sound, measurements, absolute temperatures, 4990. underwater sound, measuring, 1771A. VLF radio waves, 3923.

Velocity-of-light, precise, use of terahertz photobeats,

6489.

redefinition of the second, 5539; 5790. Vent manifold for a plumbing system, TN253, p. 1. pipe and fittings, plastic drain, waste, CS270-65;

CS272-65.

Ventilating problem in fallout shelter, 5068. Venting and drainage, problems, 113A.

Ventricle, left, mechanical, on the circulation in the

dog, effects of varying the output, 1329A. Venturi tube, liquified-sras flow measuring device, 3880. Venturi tube, quality meter, 5064. Venus and Mars at 12.5 cm, radar scattering, J 69D12-

615, 1630 (1965).

analysis of microwave observations, J 69D12-602,

1583 (1965). microwave emission, J 69D6-253, 893 (1965). observations of the 1.35 cm water-vapor line, J

69D12-599, 1580 (1965). 50 Mc/s, radar echoes form, 6325. radar results, preliminary, J 69D12-610, 1623

(1965).

radiation of, at the 13.5-mm water-vapor line, J

69D12-598, 1577 (1965). search for the 1.36-cm water-vapor line, J 69D12-

597, 1577 (1965).

Verification, experimental, WLF superposition tech- nique, 6064; 6751. tenfold assignment of the Baryon resonances, 5846. Verneuil process, pure aluminum oxide, 6730.

Versatile pneumatic instrument based on critical flow, 165 A.

stark waveguide for microwave spectroscopy, 6527. Vertical antenna, Mono.60. cross sections of the ionosphere across the geomagnetic equator, TN138 (PB161639).

cross sections of the ionosphere along 75° west geo- graphic meridian, 3267A.

incidence, 2175A; 4604.

profiles of large-scale ionospheric irregularities, 5720. Vertically polarized electromagnetic waves in a hori- zontally stratified magnetoplasma, propagation, J 69D5-504, 693 (1965). Very high frequency and ultra high frequency, power

generators for RF instrumentation, TN77

(PB161578).

signal characteristics observed on a long knife-edge

diffraction path, J 65D5-149, 437 (1965) ; 4407. Very high frequency, forward scatter and auroral-zone

absorption, 4374. ionosphereic-scatter link during multipath conditions, FM and SSB radio-telephone tests, 3552. ionospheric scatter system loss measurements European-Mediterranean area, TN230.

radio propagation data for Cedar Rapids-Sterling, Anchorage-Barrow, and Fargo-Churchill test paths—April 1951 through June 1958, J 66D1-

179, 113 (1962); TN79 (PB161580).

reflection from a tropospheric layer, a note on, J

68D7-380, 846 (1964).

reflection from a tropospheric layer, influence of

refractive index profile, 6129.

scatter systems, factors affecting modulation tech- niques, 3210.

scattering, ionospheric, near the magnetic equator during the International Geophysical Year,

J 67D5-280, 459 (1963). sporadic E at, in the USA, 3310A. Very-high pressures, measurement, 6200. Very low frequencies, TN335. (VLF) during a sudden ionospheric disturbance (SID), attenuation coefficients for propagation, J 65D6-158, 543 (1961). Very low frequency and extra low frequency, propagation research, summary, J 64D6-96, 647

(1960). radio waves between the earth and the ionosphere, guided propagation, 6449. radio waves bv a horizontal magnetic dipole, exci- tation, J 65D3-133, 305 (1961). radio waves propagation, ionosphere not sharply bounded, J 66D1-173, 53 (1962). Very low frequency and low frequency, fields propagating near and into a rough sea, J 69D2-464,

273 (1965).

signals, control of WWV and WWVH standard frequency broadcasts, J 69D7-525, 915 (1965). Very low frequency, anomalies observed at State College, Pa., during the U.S. 1962 high-altitude nuclear tests, J 68D1-326, 125 (1964). atmospheric noise, effect of receiver bandwidth on

the amplitude distribution, J 65D3-132, 299

(1961). atmospherics, return stroke of the lightning: flash

to earth as a source, J 68D7-375, 777 (1964). attenuation for East-West and West-East daytime

propagation using atmospherics, 3907. attenuation rates and excitation factors with

theory, observed, comparison, J 68D1-307, 1 (1964).

direction finding, ephi, J 65C1-53, 43 (1961). disturbances caused by trapped beta rays from the decay of neutrons produced in high-altitude nuclear explosions, J 68D1-325, 117 (1964). diurnal phase changes and solar flare effect, 4531. emission spectra observed with the "Hiss re- corder," TN226. 730
emissions, a mechanism for the production of cer- tain types, 5139. emissions and whistlers, an anisotropic electron velocity distribution for the cyclotron absorption, J 69D11-573, 1403 (1965).

emissions, and whistlers, atlas. A survey of VLF

spectra from Boulder, Colorado, TN166

(PB181454).

emissions, observations and results from the "hiss recorder" an instrument to continuously observe, J 67D5-290, 569 (1963).

fields, average decay laws, 4505. HF bands, and predictions of communication reliability, 5507. ionospheric reflection coefficients, from sferics measurements, 2172A.

localized ionospheric depression, TN208.

long, paths, observed during 1961, an atlas of solar

flare effects, TN210.

LF, ELF terrestrial radio wave fields, complete mode sum, Mono.78. measurements, 5847. mode problem for an anisotropic curved ionosphere

ionosphere, solution, J 67D3-264, 297 (1963). navigational aids, effects of the ionosphere, J

65D6-161, 575 (1961).

noise bands observed by the Alouette I satellite, J

69D1-443, 69 (1965). phase characteristics deduced from atmospheric waveforms, 3908. phase disturbances following U.S.S.R. high-alti- tude nuclear tests, 5848. phase observations of solar flare ionization in the D region of the ionosphere, 5849. phase perturbations associated with meteor show

ionization, 4408. phase shift technique, detection of high altitude nuclear detonations, 5281. radio propagation for a spherical earth and a

concentric anisotropic ionosphere, comment on

the mode theory, 5242. radio propagation, ionospheric justification for neglecting the compressibility, 6822. radio propagation, some remarks on mode and ray

theories, J 68D1-319, 79 (1964). radio signal, propagation, effects of a small local change in phase velocity, J 68D6-368, 709

(1964) . radio signals, international comparison of atomic frequency standards, J 69D7-524, 905 (1965) ; 6810.

signals, an experimental study of the phase stability, J 68D1-311, 19 (1964).

signals at dawn and dusk, phase steps and ampli- tude fading, J 69D11-577, 1435 (1965).

signals propagated through the Arctic zone, precise phase and amplitude measurements, J 68D3-

342, 275 (1964).

signals propagating over short paths, effect of the eclipse of 20 July 1963, J 69D7-528, 947

(1965) . signals received over long paths, TN206-1.

signals received over long paths during sunrise and sunset, periodic fading, J 68D1-313, 27

(1964). spectra from Boulder, Colorado, survey of. Atlas

of whistlers and VLF emissions, TN166

(PB181454).

standard frequency and time signal broadcasting

worldwide, J 65D6-164, 617 (1961).

superdirective loop arrays, J 67D5-288, 563 (1963). timing experiment, J 68D11-423, 1219 (1964). transmissions received in Paris, some particular observations on diurnal phase variations, J

68D1-312, 21 (1964).

utilization at NASA satellite tracking stations, J

68D1-315, 43 (1964).

Very low frequency, earth-ionosphere wave guide, 4642. emission pulsations, long-period, 6833. emissions, multiphase periodic, J 69D2-462, 257

(1965).

high-latitude investigation of the natural, electro- magnetic radiation, 5135. phase observations of the ionospheric effects of the

solar flare, 5119. phase observations, studying the lunar tidal vari- ations in the D region of the ionosphere, 5713. measurements for obtaining information in the lower ionosphere, 8921A.

propagation, electromagnetic signals emitted from

nuclear explosions to study of long-range, 9099. propagation in the earth-ionosphere waveguide of non-uniform width, 5120. propagation induced by an ionospheric depression

of finite extent, 6247. propagation—theory and experiment, 5121. radio propagation in the ionosphere, J 66D6-225,

663 (1962). transmission, transequatorial reception, 6510. Very low frequency propagation, 5850. comparison between mode theory and ray theory, J 65D4-139, 357 (1961). compressible ionosphere, J 68D7-376, 795 (1964). D-layer characteristics, 6473. earth-ionosphere waveguide, TN114 (PB161615)

;

5851.

influence of a circular ionospheric depression, J

68D8-389, 907 (1964).

influence of earth curvature and the terrestrial magnetic field, 3577. ionosphere height, 4081. new approach to the mode theory, J 65D1-101, 37

(1961). over long distances, phase and time variations, J

68D11-424, 1223 (1964). perpendicular to the magnetic meridian, reflection from a sharply bounded ionosphere, J 65D5-

151, 455 (1961). phase variations, 6284. phase velocity measurement in earth-ionosphere waveguide, J 68D12-431, 1269 (1964).

possibility of rejecting certain modes, 4207. theory, 4713. under the ionosphere in the lowest mode of hori- zontal polarization, J 68D1-323, 105 (1964).

variable ionosphere height, analysis, J 66D4-207,

453 (1962). Very low frequency, radio waves, 3923.

characteristics of the earth-ionosphere waveguide, TN300.

earth-ionosphere waveguide, influence of an in- homogeneous ground on the propagation, J

69D7-531, 969 (1965).

height-gain, J 67D2-254, 183 (1963). inhomogeneous ionosphere, reflection. Part I. Exponentially varying isotropic model, J 67D3-270,

361 (1963).

ionosphere, 5852.

17.8 kc/s, measurement of group velocity, J 69D9-

557, 1235 (1965). phase velocity, 3937. propagation, TN58 (PB161559) ; 5509. propagation, influence of finite ground conductivity, J 69D10-570, 1359 (1965). propagation, two-dimensional treatment of mode

theory, J 68D1-320, 81 (1964). Very low frequency wave propagation, experimental

results concerning nonreciprocal east-west, J

68D1-310, 17 (1964). Very low frequency waves, arctic propagation, diurnal changes and transmission time, J 68D2-333,

205 (1964).

horizontally polarized, recorded at night over a

short path in the southwestern United States, 731
an interpretation of rapid changes, J 68D3-

341, 265 (1964). long paths, note on diurnal phase changes, 5151. medium distances, diurnal phase variation, J 68D2-

337, 225 (1964). over distances between 1000 and 3000 km, propagation, J 68D1-309, 15 (1964). propagation, great distances, influence of the lower

ionosphere, J 67D4-271, 375 (1963). under disturbed conditions, propagation, J 68D1-

324, 115 (1964). Very low temperature data, properties of, paramagnetic salts, 5853. Very low temperatures in some 300 series stainless

steels, anomalous decrease of the elastic moduli, 6590. Very wide band antennas—1945 to the present, a sur- vey, J 66D1-168, 1 (1962). Vibrating cylindrical rod with a viscoelastic coating, 4599. sample and coil magnetometers, simple calibration, 3944. borium borosilicate, radial distribution study,

5609. china plumbing fixtures, CS20-63.

coatings on steel, firing, investigations of gases, 745A.

silica, eleastic constants, 4973.

silica, quartz, and high silica glass, 6780. Vibration, TN266.

amplitudes, interferometric measurement, 6229.

cylindrical rods, numerical solution of the fre- quency equations, J 64B4-39, 237 (1960). electrodynamic exciter, application of air bearings, J 67C4-144, 327 (1963).

lattice, and polaron coupling constants in rutile (Ti02 ), polar modes, 6294. methane, nu, condensed oxygen, nitrogen, 5516. modulated photoelectric measurement, 4779. non-linear, equation, Rayleigh's, 4197A.

pickups at large amplitidues, calibration, 3991;

4209; 4512; 6621. Rayleigh's non-linear, equation, 4197A.

transducers, use of high-strength ceramics, 6520. Vibration-rotation bands of ammonia. IV. The stretch- ing fundamentals and associated bands near

3n, 3909. bands of carbonyl sulfide, J 66A2-147, 163 (1962). bands of deuterium cyanide and hydrogen cyanide,

6529. bands of N20, 3910. hydroxyl radical, 4489.

interaction correction, molecular hydrogen, intensity of quadrupole fundamental, 6144. spectra of BrCN, 5123; 5854. spectrum of matrix isolated hydrogen chloride, 4902. Vibration-rotational interactions in cyanamide; the question of planarity of amides, 5122. Vibrational assignment of sulfuryl fluoride, 9102. contributions to the thermodynamic functions. Tables of Einstein functions, Mono; 49. distribution functions in bimolecular dissociation

reactions, 3366. energy transfer, effects of anharmonicity, 6010. energy transfer theory, critical examination, 6665. excitation hydroxyl radical emission, 4520.

excitation, impact parameter treatment, 6125. fundamentals of CF2 N2 from the ultraviolet ab- sorption spectrum, 9131.

intensity distributions in the nitrogen afterglow,

3367.

relaxation, approach to simple exponential decay,

6606. relaxation of gases behind shock waves, model,

3262. spectrum, 5123. spectrum of cyanate ion in various alkali halide

lattices, 3368. spectrum of tetrachlorodiborine, 823A.

states of "N2

16 0, rotational constants of excited, 6354.

transition probabilities of diatomic molecules: Collected results IV, BeO, BO, CH+

, CO, SH, 02 , Of, 3911. Vibrational rotational, and electronic energy transfer

in fluorescence of nitric oxide, 5650. energy levels including centrifugal distortion, 4956. spectroscopy, 5124. Vibrationals excited 02 formed in the flash photolysis of NO2, 6249. Vibrations, electromagnetic, application to the theory

of waveguide junctions, generalized variational

principles, 5376. uniform bars of square cross section, torsional res- onance, J 65A3-99, 167 (1961).

Vib-rotors, molecular, theory and interpretation of high

resolution infrared spectra, 5493. Vicinity of an absorbing interface, density distribution of polymer segments, 6678. magnetic equator during daylight hours, evidence

of a stratified echoing region at 150 km, 6055. Vicious cycle in secondary batteries—a mathematical

approach, 5069. Viewing port, furnace, periodic heat flow in a hollow

cylinder, rotating, 5558. Viewpoint, national standardization, 5690. Vinyl chloride, dipole moment, and nuclear quadrupole

effects in, microwave spectrum structure, 3648.

chloride plastics, standards, 4940. coated glass fiber insect screening and louver

cloth, CS248-64.

ethers and pentafluorophenyl alkyl, J 70A3-399

233 (1960).

fabrics for apparel use, expanded, CS258-63.

fabrics for furniture upholstery, CS273-65.

fluoride, improved structure determination, 3971.

Violet spectrum of CN, chemical and magnetic en- hancement of perturbed lines, 5231.

Virial coefficient of a real gas, suppression at high

temperature, 9051.

coefficient, sedimentation equilibrium second, of polymers in good solvents, effect of hetero- geneity in molecular weight, 6251.

coefficients, para-hydrogen, 24 to 100 °K, J 65C4-76, 231 (1961).

coefficients, second and third, for hydrogen, J

68A1-260, 121 (1964).

corrections from 1500 °K to 15,000 °K, tables of thermodynamic properties of air in chemical

equilibrium, 9055.

Viscoelastic behavior of rubberlike polymers, model for, J 66B4-85, 171 (1962).

coating, cylindrical rod, 4599.

linear, behavior of rubberlike polymers and its molecular interpretation, 3844. properties of polymers as predicted by a molecular

theory, effect of molecular weight, J 67B2-96,

87 (1963). Viscoelastometer for measurement of flow and elastic recovery, J 65C1-51, 9 (1961). Viscometer, absolute torsional pendulum, analysis, 3421. direct-reading, 3116.

flows, viscous heating correction, 5070. NBS, calibrating liquids and capillary tube viscometers, Mono. 55. rotating cylinder, wide-range (up to 1010 P), J

69A5-366, 449 (1965). Viscometers, capillary tube, NBS viscometer calibrat- ing liquids, Mono.55.

Viscosity and conductivity of simple fluids, thermal,

6498. density of boron trioxide, 9132.

Viscosity, determination, 3178.

liquids, relative roles of free volume and activation energy, 8920. 732
moderately dense gas, density expansion, 6679. parahydrogen, measurements, 6857. standard soda-line-silica glass, J 68A5-291, 439

(1964). thermal conductivity coefficients of dilute argon

between 100 and 2000 "K, TN333.

thermal conductivity of simple fluids, 9107. Viscous heating correction for viscometer flows, 5070. Vises (machinists' and other bench-mounted vises, R299-63.

Visible afterglow in helium, short-duration, 5657.

light, remarks on coincidence experiments, 5636.

region, optical constants of iron, 8923.

ultraviolet spectroscopy to identify carbonyl com- pounds in photodegraded plastics, 9100.

Vision, dichromatic, and normal trichromatic vision representing a reduced form of normal vision, 6342. normal, relation between normal trichromatic

vision and dichromatic vision, 6342. Visual appearance, five-attribute system, 3927. distinctness-of-image gloss meter, 3125. observation, high pressure transitions, 5125. observations, stressed biaxially oriented nylon, polymer compression, 6298. Vitreous barium borosilicate, radial distribution study

of, J 67A1-193, 37 (1963).

borates, alkaline earth cation distribution, 5905. Vitrons as flow units in alkali silicate binary glasses, J 65A2-94, 117 (1961). Vocabulary control and construction, TN269, p. 177. Void, spherical, compressible isotropic plasma, 6347. Volcanic explosion on the island of Bali, infrasonic observations of the May 16, 1964, 6803. Volt-ampere converters, calibration, TN188.

Volt box, standard, method for calibration, J 67C1-114,

1 (1963). Volt boxes, human engineering in design of a console

for comparison, 6119. Voltage, TN280.

bridge, NBS RF, functional and design problems, TN123 (PB161624).

dependence of precision air capacitors, J 69C4-207, 265 (1965).

divider calibrations at 400 and 1000 Hertz, inter- national comparison of inductive, 6595.

dividers, calibration of inductive, and analysis of

their operational characteristics, 5737.

dividers, inductive, 4986.

dividers, inductive, accurate measurement of volt- age ratios, 6427.

dividers, inductive, with calculable relative corrections, 5405.

inductive, comparison calibration, 5248; 5959. Laue X-ray photography, high, large single crvstals, 6117. low electron guns, design, 5280. measurement, use of the stark effect, 5020. measurements on Zener diodes, making precision, 6188. measurements, system for accurate direct and al- ternating, 6568; 6569.

pulse, comparator measures height of positive or negative pulses, 4248. pulsed and CW sinusoidal, and current measurements, 6322.

ratio detector for millivolt signals, TN266.

ratio measurement, precise, 8952.

ratio measurements with a transformer capaci-

_ tance bridge, J 66C1-84, 25 (1962).

ratios of inductive voltage dividers, accurate measurement, 6427.

reflection coefficient, decibles return loss to magnitude, 4022.

reflection coefficient, magnitude, 4564. standards, Zener diodes, 5247. thermal, converters for accurate voltage measure- ments to 30 megacycles per second, 3886.

transformer calibration at NBS, comparators, J

69C4-206, 257 (1965). transformer calibrations to 350 KV, an international comparison, 5913.

unit, establishment and maintenance of the, at the NBS Boulder Laboratories, 5752. Voltages, impulse, measurement of short duration paper, discussion, 5298. sparkover, a 200 cm sphere gap, 5674. Voltmeter standards, new, one year trial, 5545. thermocouple, differential, 4422. Voltmeters, D-C digital, 3928. RF vacuum tube, precision calibration, TN121

(PB161622).

Volts, medical X-ray protection up to three million, H76. Volume and pressure in the study of transitions in polymers, utility of Tait equation, 6522. activation energy in the viscosity liquids, 8920. common, to two intersecting cylinders, J 69C2-193,

139 (1965).

leather, application of Archimedes' principle to determination, 6429. measurements on liquids at high pressures, simul- taneous dielectric constant, 9008. polymer molecule with solvent interaction, statistical computation of configuration, 5695. relaxation of As-Oj in the glass transformation,

9133. relaxations in amorphous polymers, 9134.

valve, constant, III. NBS gas thermometer, 6879. Volumetric, metal, standards, testing, Mono.62.

Vortex, curved, and motion of an elliptic vortex ring, localized-induction concept, 6832. formation and resistance in periodic motion, 3368A.

ring, elliptic, localized-induction concept on a curved

vortex and motion of, 6832.

Vozoff's paper "calibration of pulsation detector coils," 4002. VSWR, low input, coaxial diode switch for the UHF

band, 5875. measurement, a guide to the use of the modified

reflectometer technique, J 65C4-74, 217 (1961). minimization, application of isometric-circle inter- pretation of bilinear transformation, J 69D9-

562, 1271 (1965). responses for microwave reflection coefficient measurements, magnified and squared, 3247. Vulcanizate, pure-gum rubber, compliance-time-temperature relationships from indentation measurements, J 69A4-354, 347 (1965). rubber-sulfur and its relation to free volume, dy- namic compressibility, 3827. Vulcanizates, rubber, measurement of the aging, 3249. Vulcanization of natural rubber, some changes in double-bond structure, J 68A5-296, 499 (1964). W

W, isotopic mixing in nitrogen chemisorbed, 6821. polonium-210 alpha particles in nitrogen, argon, and an argon-methane mixture, absolute measurement, 6577. W-spin analysis of weak decays in U(12), 9142. W-spin and B-spin subgroups of SU(12), 9103; 9143. Wafer tube, ceramic, 3157. Wagner function and transport theory, topics in quantum statistics, 4929. Walk, correlated, and diffusion equations in a driving

force, 6661. Walkway slipperiness, causes and measurement, 3992. Wall, floor, and door constructions, sound insulation, Mono.77.

perturbations, effects, multimode waveguides, J

68D1-314, 35 (1964). Walls, cavity, mortars, 3655. medical X-ray rooms, measurement of radiation 733
exposure, for determining protective barrier requirements, 3628. Warm-up and cool-down, large powder-insulated Dewars, 5261A. Water, absorbed, 4613. absorption of leather, measuring, 4793.

acetic anhydride, and acetyle chloride in acetic

acid, conductance of solutions, 4013. acetone solvents at 15, 25 and 35°, acetal in, ki- netics of the acid-catalyzed reaction, 5437. added to solvents, differential dielectric apparatus

for determining, 5295. ammonia, vacuum ultraviolet photolysis, 5112. benzene, isomeric dinitrophenols, 4536. convective circulation, induced by evaporative cool- ing, 4017. D-D source, fast neutron dose measurements, J

68A1-250, 1 (1964).

dissociation equilibria, 4577.

distilled, influence of crystallographic orientation on pitting of iron, 3232.

fresh, field strength measurements, J 64D5-78, 435

(1960).

glass, concentration-dependent diffusion coefficient, 5256. glass surfaces, interfacial properties of polyesters, 3233. heavy, age to indium resonance for D-D neutrons,

3965. heavy, from 5 to 50 deg. thermodynamics of solu- tions of deuterium chloride, 6506. heavy water for D-D sources, calculations of the neutron age, 3990. hydrogen, carbon, and aluminum, X-ray attenuation coefficients from 13 to 80 Mev, 3916. jacket for small kystrons, 4652. methane, deuterium isotope effect in vacuum-ultraviolet absorption coefficients, 6691. (methanol) solvents, interpretation of potentio- metric titrations of weak acids, 6155. oxide films formed on copper single crystal sur- faces in, III. Effect of light, 6468. penetration testing machine for sole leather, 3912. photon-dissociation : initial nonequilibrium populations of rotational states of OHfr), 4226. potassium chloride-barium chloride at 25 °K, ther- modynamics of the ternary system, properties

of aqueous mixtures of pure salts, J 69A5-365, 439 (1965). pure, oxide films formed on copper single crystal surfaces, 3343. reducing admixtures and set-retarding admixtures on properties of concrete, 3589.

repellent preservative non-pressure treatment for millwork, CS262-63. requirements of portland cement, BSS2, Part 1. resistance testers for shoe upper leather, 3406.

solvents, 4724; 9036. standards, NBS tritiated, 5884; 6464. systems, hydroxapatite, 4914. systems, solubility product phenomena in hydroxyapatite, 4293.

ultra low-conductivitv. bv electrophoretic ion exclusion, J 64A6-76, 527 (1960). vapor bands at 2.7m, line parameters and computed

spectra, Mono.71. vapor boundary layers in biological systems, 5855;

9086. vapor in molten alumina, 6478. vapor turbulence, use of the radio refractometer to measure, 9101. Watermarks for papermaking by electroforming, 9135. Water-f, determination of isotope effect in formation

of, J 67A6-241, 569 (1963). measurement of enolization, TN274. Watson transformation and mode theory, some remarks,

J 68D1-317, 59 (1964).

Watts nickel bath, use of disodium ra-benzenedisulfo- nate as a hardening agent, 3898. Wave, circulating around a rigid cylindrical obstacle

in a compressible plasma, J 69D4-492, 567

(1965). coverage, wide spin, ellipsoids, ferromagnetic res- onance relaxation, 6068. electromagnetic, in a plasma, harmonic currents

excited, J 69D4-494, 599 (1965). electromagnetic, penetration of reentry of plasma

sheaths, J 69D2-449, 147 (1965). electromagnetic signal, propagation of the ground;

with particular reference to a pulse of nuclear

origin, 8962. ground, of a low frequency electro-magnetic pulse, attenuation, TN310.

hop theory, LF/VLF, path integrals, J 69D11-

580, 1435 (1965). hop theory of long distance propagation of low- frequency radio waves, J 68D12-432, 1275

(1964). hydromag-netic, inhomogeneous, cylindrical plasma, J 69D3-475, 389 (1965).

interaction, TN325.

interaction in oxygen magnetoplasmas, J 69D4-496,

617 (1965).

interaction in the ionosphere, J 69D1-439, 9 (1965).

ionospheric, interaction experiments, numerical

simulation, TN325.

length definition of the meter, systems of units, national and international aspects, 3369. millimeter, research at the NBS, 5489. millimeter, techniques, 4181. mode modification in liquid helium with clamped normal fluid, 9136. precision millimeter, interferometry at the U.S. National Bureau of Standards, 3719A.

reflected shock, in a transverse magnetic field, propagation, 6316.

reflection, electromagnetic, from an oscillating, collision-free magneto-ionic medium, J 69D1-

447, 111 (1965).

scattering, tropospheric radio, bibliography, TN80

(PB161581).

spectrophotometry determination of the rate of

dissociation of tetrafluorohydrazine, 9030.

surface, 3284. theory, acoustic, a comparison of radar auroral reflection data, J 69D7-529, 959 (1965).

type, pure, new differential operator, 6552. Wave functions, anharmonic oscillators by perturbation methods, 5126A. Coulomb, AMS55.

gaussian, for polyatomic molecules: integral for- mulas, J 68B1-114, 35 (1964). Hartree-Foch, atomic scattering factors for the lithium and beryllium isoelectronic sequences from accurate analytic, 5207.

oscillator strengths for the lithium iso-electronic sequence, 5856.

potential functions pertaining to spherically stratified media, J 67D2-256, 199 (1963).

spheroidal, AMS55. Wave propagation, around a curved boundary which

contains an obstacle, 5127. compressible ionosphere, J 68D12-433, 1285 (1964)

;

J 68D12-434, 1297 (1964).

concentrically stratified troposphere with a smooth

profile, J 64D5-82, 467 (1960); J 66D1-172,

31 (1962). electromagnetic, and relativistic damping effects in a uniformly magnetized electron-positron gas, 6727. evidence of the influence of long-term magnetic

activity on medium frequency sky, 9017A.

ground, over mixed land and sea paths, curves, 5273. 734
propagation in stratified random media, J 68D6-

372, 747 (1964). Wave, propagation during World War II, 4877.

radio, fields, LF, VLF, ELF terrestrial, complete mode sum, Mono.78.

reflections, at a continuously stratified plasma with

collisions proportional to energy and arbitrary magnetic induction, 5623.

scattering, 4447. Waveforms, atmospheric, theory of the slow-tail portion, 3695. atmospheric, VLF phase characteristics deduced,

3908. Wavefront reversing interferometer, 3881. shearing interferometer, J 65B4-62, 239 (1961); J 69C4-204, 245 (1965). shearing prism interferometer, J 68C3-160, 155

(1964). Wave fronts, measurement without a reference standard, J 65B4-62, 239 (1961); J 66B1-70, 29

(1962).

optical system, local curvature, 6181. Wavefunctions, primarily 3d, of the tetrachlorocuprate

ion, electron paramagnetic resonance, 6731. Waveguide and losses in waveguide joints, two-channel

nulling method for measuring attenuation con- stants of short sections, 6573. attenuator, inline, 6138. attenuators, rotary vane, 4488. doubly infinite set of equations pertaining to a boundary value, J 67D2-260, 245 (1963).

interpretation of "temperate-latitude spread F" on

equatorial ionograms, 3955.

joints and connectors, measurement of reflections and losses, using microwave reflectometer techniques, 3629.

joints, two-channel nulling method for measuring

attenuation constants of short sections of waveguide and the losses, 6573.

junction, two-arm, maximum efficiency, 5463. junctions, theory, generalized variational principles for electromagnetic vibrations, 5376. model terrestrial, propagation in, of nonuniform

height theory and experiment, J 69D11-578,

1445 (1965).

noise-tube mount for use as an interlaboratory

noise standard, 5897; 6530. nonuniform width, VLF propagation in the earth- ionosphere, 5851. rotary-vane attenuator, rotation errors, 5196. systems, multi-channel, method of improving iso- lation, 3385.

theory, perturbation method in a problem, J 67D2-

255, 189 (1963). transmission line characteristic impedances, rela- tionships between different kinds of network

parameters not assuming reciprocity or equality, 6343.

versatile stark, for microwave spectroscopy, 6527. Wave guide, earth-ionosphere, 4642. mode conversion. TN151.

propagation of ELF pulses, 4809. VLF propagation, TN114 (PB161615). VLF radio waves, characteristics, TN300.

Wave-guides and cavities, geometrical anisotropy of magnetic materials, 3220.

characteristics for long-distance transmission, J

65D1-105, 75 (1961). multimode, effects of wall perturbations, J 68D1-

314, 35 (1964). nonuniform, with impedance walls, propagation, J

68D11-421, 1201 (1964). propagation, terrestrial, of electromagnetic pulses, 8961.

self and mutual admittances of, radiating into plasma layers, J 69D2-453, 179 (1965).

terrestrial, review of mode theory of radio propagation, 5646.

wave transmission, very low frequency, ionospheric

disturbance, electromagnetic waves propagation, J 68D11-421, 1201 (1964). Wavelength calibrations in the far infrared (30 to 1000 microns), J 67A4-225, 351 (1963).

definition of the meter, 2838A. energy levels and pressure shifts in mercury, 5126. Hg108 Zeeman filter relative to that of the 2537-A

absorption line of an atomic beam, 5857. infrared, dependence of the total absorptivity of

electroplates silver, 4699. 6-meter, angular scattering law for the moon, 6601. millimeter, resonant structures, 4775; 5490. passed by Hg108 Zeeman-split absorption filter, 5858. propagation of long, terrestrial radio waves—two

theoretical techniques, 5358.

shifts in Hg168 as a function of temperature, J 65A6-128, 473 (1961).

shifts, produced in electrodeless discharge tubes and predicted stark-effect shifts in the spec- trum of neutral germanium, 5977. systematic, shifts in atomic beam devices, 3485. Wavelengths from thorium lamps, J 69A2-332, 109

(1965) . intensities, and Zeeman patterns in ytterbium

spectra (Yb I, II, in, iv), J 70A1-386, 63 (1966) . intensities in the first spectrum of bromine, 2000

to 13000A, J 65A3-98, 159 (1961). KrM and atomic-beam-emitted Hg198

, 4141. millimeter and submillimeter, resonators, 4282. millimeter, new wavemeter, 4790. new, for some helium lines, 3663. Wavemeters, accurate microwave, with convenient cali- bration tables, 3417. millimeter wavelengths, 4790. Waves, acoustic, excitation of, in plasmas, J 69D4-495,

609 (1965).

acoustic plasma, field aligned E-region irregularities, 5356.

amplified, leading to transition in boundary layer with zero pressure, 3206.

arterial pulse, improved transducer for external

recording, 5401. atmospheric gravity: new toy for the wave theorist, J 69D3-473, 375 (1965).

circuits, radio, URSI, report of U. S. Commission

6, J 64D6-96, 671 (1960).

cold magnetoplasma, dispersion, from hydromagnetic to whistler frequencies, J 69D4-484, 463

(1965).

cyclotron harmonic, warm plasmas, J 69D6-512,

789 (1965).

diffraction by a wedge, 994A. ELF and VLF, on the terrestrial propagation of, in the presence of a radial magnetic field, J

69D5-505, 705 (1965). ELF and VLF radio, between the earth and the ionosphere, guided propagation, 6449. ELF, propagation, below an inhomogeneous anisotropic ionosphere, J 68D1-322, 103 (1964). hydromagnetic, attenuation, in the ionosphere, J 69D3-471, 361 (1965). hydromagnetic, propagation, in the magnetosphere,

J 69D8-545, 1133 (1965).

infrasonic pressure, associated with magnetic

storms, 4701.

lasers, stability of traveling, 1035. long paths, note on diurnal phase changes of VLF,

5151. multiple scattering, J 64D6-96, 715 (1960). note concerning the excitation of ELF electromagnetic, J 65D5-154, 481 (1961).

ocean, sound, 4873. plane electromagnetic, propagation past shoreline, J 66D3-200, 319 (1962). 735
plasma, index of refraction surfaces, J 69D4-490,

539 (1965).

plasma, radiation of electro-magnetic and electro- acoustic, 8908; 8909. plasmas, J 68D5-365, 674 (1964).

possibility of guided electromagnetic, in the earth's

crust, 5782. propagation of, across a magnetoplasma-vacuum

boundary, J 69D6-513, 807 (1965).

Rayleigh, across an ocean floor with two surface

layers, 4381 A.

reflection, inhomogeneous layers with asymmetric

profiles, a note concerning, J 69D5-505, 701

(1965).

second order, in hypo-elasticity, 4542.

self-ionizing shock, magnetic field, 5353. shock, generating cylindrical, in a controlled at- mosphere, wire exploder, TN148 (PB161649).

shock, model for vibrational relaxation of erases, 3262. standing, in rectangular basins, energy dissipation, 3202. strong blast, energy parameter B, TN155.

traveling pressure, associated with geomagnetic

activity, 4394.

ultrasonic, melting and molten polyethylene, de- termination of the propagation constants, 5987.

vertically polarized electromagnetic, in a horizontally stratified magnetoplasma propagation, J

69D5-504, 693 (1965).

VLF, medium distances, diurnal phase variation, J 68D2-337, 225 (1964).

VLF radio, characteristics of the earth-ionosphere

_ waveguide, TN300.

whistler radio, study of the guiding mechanism, J

69D4-485, 493 (1965).

Waves electromagnetic, along an infinitely long and

thin conducting wire in a magneto-ionic medium, J 69D4-486, 503 (1965).

along the earth's surface, propagation, 5035. concerning the mechanism of reflection, from in- homogeneous lossy plasma, J 69D6-518, 865

(1965).

cylindrically stratified plasma, transverse propagation, 6511. earth, 5586.

electroacoustic, scattering: of, by a cylindrical object in a compressible plasma, J 69D2-461, 247 (1965).

fluctuating medium, statistical theory, J 67D3-265,

303 (1963).

lossy magnetoplasma, reflection, J 68D1-321, 95

(1964).

propagation, through a continuously varying stratified anisotropic medium, J 68D4-356, 407

(1964).

reflection from a stratified semi-infinite medium,

J 68D11-422, 1215 (1964).

reflection from thin ionized gaseous layers, J 66D1-

175, 73 (1962).

stratified media, 4623. surface, an approach to the classification, 5191.

surface, investigation of plasma boundaries. 6158. transmission and reflection of, by a hot plasma, J 69D5-509, 735 (1965).

uniformly rough surfaces, 3225; 3226. Wave radio, biexponential nature of tropospheric gas- eous nature, J 69D6-522, 885 (1965).

bibliography on tropospheric propagation, TN304.

contribution of nonthermal electrons to auroral absorption, 6434. plasma, effect of coulomb collisions on incoherent

scattering, 6441. troposphere, attenuation, 5930. troposphere, techniques for computing refraction

of, TN97 (PB161598).

tropospheric refraction and attenuation, 6515.

736

VLF, propagation of, along the magnetic equator,

5509. Wax, casting, dental inlay, 4286. paper, determination, 4033. Ways, percision, testing, J 68C2-153, 83 (1964). Weak acids in methanol-water solvents, interpretation

of potentiometric titrations, 6155. charge-transfer complexes, infrared spectroscopy.

6132. F"

decays in U(12), W-spin analysis, 9142.

electrolytes, 4600; 4601. generalized inverses and minimum variance linear unbiased estimation, J 68B4-128, 151 (1964).

low-frequency fields, new absolute method for the measurement of magnetic susceptibilities, 5501. Weakly coupled systems, theory of relaxation in a

group, 9112. Weapons, nuclear, shielding against gamma rays, neutrons, and electrons, Mono.69.

nuclear, structure shielding against fallout radiation, Mono.42.

Wear of magnetic recording tape and solubility of the

binder, 5810. Weather and reception level on a troposphere link

annual and short-term correlations, J 65D2-

113, 155 (1961).

angels, and insects, J 68D8-387, 895 (1964).

data acquisition, computer, 3376A.

May 19, 1960, 4909. observations, surface, comparison of observed at- mospheric radio refraction effects with values, 5250.

resistance, BSS4.

resistance of porcelain enamels. Effect of exposure

site and other variables after 7 years, BBS4. resistance of porcelain enamels exposed for three

years, effect of exposure site, Mono.44.

resistance of porcelain enamels exposed for 7 years

at various sites, 6531; 6538.

resistant polyvinyl alcohol coatings, 3370. Weathered granite and uranium-bearing sandstone,

fractionation of uranium isotopes and daughter products, 6084. Weathering, colorimetric method for measuring polyester degradation, 5239. data, on aluminum alloys, 5731. laboratory, asphalts, comparison of xenon and car- bon arcs as radiation sources, 6645. smooth-surfaced built-up roofs exposed to solar heating, effect of insulation, 5310.

theoretical and practical aspects of asphalts, 9137. Wedge, diffraction of waves, 994A.

kikuchi pattern from a silicon, 6171. surface, apex, calculations of the field, TN204.

Weierstrass elliptic and related functions, AMS55.

Weighing and measuring (commercial), devices, speci- fications for (corrected through 1961), H44, * 2 ed. equipment, examination, H94.

Weight, atomic, of silver, absolute isotopic abundance

ratio, 3412. atomic, of silver, absolute mass spectrometric de- termination, 3413.

calibration schemes for two-knife-edge direct-read- ing balances, J 66C1-85, 33 (1962).

checking of aerosols, 9138. copper, natural variation of copper isotopes and

the atomic, 6880. measure, units, M233.

molecular, distributions, 4574. molecular, on the sedimentation equilibrium sec- ond virial coefficient of polymers in good sol- vents, effect of heterogeneity, 6251. Weighted radionuclide intake, mathematical programming models, for selections of diets to minimize, 5461.
Weighting factors in linear regression and analysis of variance, 6051. Weights—a challenge to industry, 6533. Weights and abscissas of Gauss type, 4297. atomic, 3145. atomic and nuclidic masses, new scale, 4789. molecular, determination, 4574. molecular, macromolecules, accurate determination,

2802A.

molecular of polystyrene, initiated by sodium naphthalene, homogeneous anionic polymerization,

5390. standard, stainless steel, 3946; 4934. Weights and Measures:

a challenge to industry, 6533. administration, H82.

aerosols, 6534.

control of packaged goods in the United States, development, 3826.

correct, helping consumers, 3229A.

examination of farm milk tanks, H98.

examination of liquefied petroleum gas liquidmeasuring devices. A manual for weights and

measures officials, H99.

examination of weighing equipment, H94.

household, M234.

Index to Reports, First to forty-fifth National

Conferences, M243.

international, 6811. standards of the United States. A brief history,

M247.

Weights and measures, National Conferences:

1960: M235

1961: M239

1962: M244

1963: M254

1964: M263

1965: M272.

Weights and measures program, technical training, 4971; 5724. Weights and sizes, molecular, 4782. Weissfloch-Feenberg node-shift technique, automatic

method for obtaining data, 6591. Welded butt joints with fine wires, 4409. Weston standard cell over long periods, constancy of a modified, 5971. Wet surface, flat-plate, under adiabatic conditions with

respect to the Lewis relation, calculation of the temperature, 6619. What is needed next in the simulation of the arterial

street, 6535. What is the best value? 4410. What price accurate test methods, 3913. why and how much: hall generators, 6110. What's new in control standards, 6536. Wheels, grinding, grading of abrasive grain, CS271-65.

Which measure of precision; the evaluation of the

precision of analytical methods involving linear

calibration curves, 6537. Whisker growth and evaporation, theory, 6497. Whiskers, aluminum oxide, electron microscopy and

diffraction, 6729.

crystal, K and Hg, growth and evaporation ki- netics and surface diffusion, 5378. Whistler case, geometrical optics convergence coeffi- cient, J 68D2-334, 211 (1964).

echoes, study of the phenomenon, J 69D3-478, 407

(1965).

microwave, mode propagation ir a dense labora- tory plasma, 3649. mode signals, man-made one-hop, at 18.6 kilocycles per second, variations in phase path, 5844. propagation, geometrical optics convergence coeffi- cient, J 68D11-425, 1225 (1964).

radio waves, study on the guiding mechanism, J

69D4-485, 493 (1965). ray paths, computation, J 65D5-155, 485 (1961).

Whistlers, J 68D5-363, 609 (1964); 5859.

direction finding, 3187. homogeneous medium, guiding, J 64D5-88, 505

(1960).

nose, 4419. related phenomena, summary of research, J 64D6-

96, 642 (1960).

VLF emissions, anisotropic electron velocity dis- tribution for the cyclotron absorption, J 69D11-

573, 1403 (1965).

VLF emissions, atlas of. A survey of VLF spectra

from Boulder, Colorado. TN166 (PB181454).

White cast iron spectrochemical NBS standards, preparation, M260-1.

cast iron standards, methods for the chemical

analysis, M260-6.

lead and zinc oxide in white paint pigments, the polarographic analysis, 9092. paint pigments, the polarographic analysis of white

lead and zinc oxide, 9092. Whittaker functions, asymptotic solutions of second- order differential equations having an irreg- ular singularity of rank one, 8910. Why, what and how much: hall generators, 6110. Wide-range (up to 10lo P) rotating cylinder viscometer, J 69A5-366, 449 (1965).

Wide spin wave coverage by ellipsoids, ferromagnetic

resonance relaxation, 6068. Wide-survey, world; new developments in dental materials, 6884. Widely separated clocks with microsecond synchronization and independent distribution systems,

3913A.

Width of cracks in concrete at the surface of reinforc- ing steel evaluated by means of tensile bond

specimens, 3371. equatorial E belt, 4814. microwave lines of oxygen and their relationship

to the thermal noise emission spectrum of the atmosphere, 9139. Widths and shifts, some stark broadened oxygen lines

in an arc plasma, 5656. transmission Kikuchi lines in silicon and diamond,

9140. Wilcoxon statistic with ties, exact and approximate

distributions, 4078. Williams-Landel-Ferry equation to silicate glasses, 3139. Wind pressure, solar, shape of magnetosphere boundary

shape, 6364. resistance of asphalt shingle roofing, 4411.

solar, J 65D6-157, 537 (1961).

Window units, wood awning, CS204-64.

wood casement, CS205-64.

wood double-hung, CS190-64.

wood horizontal-sliding (all sash operating),

CS264-64.

wood horizontal-sliding (one or more non-operating

sash), CS265-64.

wood single-hung, CS266-64.

Windows, ceramics, high temperature seal sapphire,

6782. production of alumina, 8959.

sash, and screens, ponderosa pine (using single

glass and insulating glass) , CS163-64.

Winds, ionospheric: motions into night and sporadic E

correlations, 6164. Winter thermal radiation studies in Yellowstone Park,

4412. Wire and wire products, zinc-coated and uncoated, at- mospheric corrosion investigation of, 4396. copper, tables, H100.

exploder for generating cylindrical shock waves in a controlled atmosphere, TN148 (PB161649).

737
exploding, experiment, 4513. grid parallel to the earth's surface, 4620. grid parallel to the interface between two media, numerical investigation of the equivalent impedance, J 66D1-169, 7 (1962).

long, suspended over the ground, 4203. Wires, exploding, 4767.

fine, welded butt joints, 4409. low temperature-coefficient of resistance useful in calorimetry (10 °K-380 °K), electrical resist- ance, 6018. With-in-the-horizon propagation at 9300 Mc, studies, 5711. WLF superposition technique, experimental verification, 6064; 6751. Womens hosiery size, CS46-65. W03-B2O,, the system, 9097. Wood awning window units, CS204-64. casement window units, CS205-64. double-hung window units, CS190-64.

horizontal-sliding window units (all sash operating), CS264-64.

horizontal-sliding window units (one or more non- operating sash), CS265-64.

single-hung window units, CS266-64. Word associations, M269, p. 25. grouping and document grouping, M269, p. 15. Work, composition and interrelation of international and national organization engaged in the standardization of dental materials and therapeutic agents, 6647. current NBS, properties of parahydrogen, survey,

6414. flowing planning, M248, p. 209. function and secondary emission, 5861. function from the ratio of positive to negative sur- face ionization of an alkali halide, the deter- mination, 9069. function measurements on field emitters with prescribed orientation, 9141. photochemical, vacuum ultraviolet region, intense resonance line sources, 6141; 6142. Working humidity standard, pneumatic bridge hygrometer, 6555. World, cryogenics. III. Cryogenics at the NBS Boulder

Laboratories, 9105. days program, 6539. how to listen to the ionosphere, 9084. maps of F2 critical frequencies and maximum

usable frequency factors for use in making

ionospheric radio predictions, 3914. maps of F2 critical frequencies and maximum

usable frequency factors, supplementary, TN2-

2 (PB151361-2). NOMAD-1, 6492. temporal, wide variations of sporadic E, 2800A. we live in and radiation, 5610. World-wide developments, 6853. patterns of ionospheric blackout occurrence, 4413. survey; new developments in dental materials,

6884. VLF standard frequency and time signal broadcasting, J 65D6-164, 617 (1961). Woven fabrics, interlaboratory evaluation of proce- dures for tongue-tearing strength, 6147. Writing inks, comparisons, paper chromatography,

209A.

science news, 4285. Wrought-iron. brass, copper, and steel pipe nipples, CS5-65. WWV and WWVH stations, NBS, standard frequencies and time signals, M236.

reception in the arctic during ionospheric dis- turbances, J 67D2-253, 179 (1963).

station, phase control, 4894. time signal receiver, 3915.

X, Y, Z X- and gamma-ray dosimetry, photographic, 286A. X-band TEOll cavity resonators, end plate modification, 3201. X- or gamma-ray energy absorption of transfer coeffi- cient: tabulations and discussion, 4383. X-radiation, low-energy, narrow-band spectra, 1411A.

X-ray, apparatus and radiographic film, dental, 3117. attenuation coefficients from 13 to 80 Mev for hydrogen, carbon, water and aluminum, 3916. beam calibrations, transfer, J 66C2-91, 107 (1962). camera, small-angle, new high resolution, J 68C3-

161, 173 (1964).

coherent, scattering data to the diamagnetic nuclear shielding constant and to the self-en- ergy of the charge distribution of the scatterer, sum rules relating, 5714. crystallographic study of Schroeckingerite and its dehydration product, 3134. determination of the Debye temperature of silver

iodide, 5914. diffractometer cryostat providing temperature control in the range 4 to 300 °K, J 65C4-75, 225

(1961). diffractometer furnance, 4859; 5400. diffractometer, Morelco, simple low temperature

specimen holder, 3945.

electron probes analysis, 5715. emulsion, rate dependence in solarizing commercial, 6333. fluoroescence spectrometry, optical spectrometry, and electron probe microanalysis techniques, June 1964 to June 1965, TN272.

high-energy, spectrometer using large anticoinci- dence sodium iodide crystals, 3566A.

high-pressure, diffraction studies, 5388. high-voltage, Laue photographs, characterization

of large single crystals, 5738. images, high energy, 3363.

intensity measurements, high-energy, intercomparison, J 68A6-319, 703 (1964).

investigation of strain in cold-worked silver iodide, J 68A4-283, 355 (1964).

line broading, calculation of crystalline size dis- tributions, 5218.

line broadening, determination of crystallite size distribution, 4034. low angle, diffraction of fibrous polyethylene, 3606. mass attenuation coefficients in the wavelength range from 0.5 to 100 A (25 to 0.12 kev), TN284.

measured residual stresses, Bauschinger effect, J

65C4-79, 265 (1961). measurement of residual strains in individual grains of polycrystalline aluminum, J 68C4-

171, 249 (1964). medical, protection up to three million volts, H76.

microscope, point projection, moire fringes pro- duced, J 67A2-201, 149 (1963). microscopy of paper, soft, 6367. microscopy of polymers by point projection, 5862. microscopy, projection, roofing material, 5599. patterns of calcium aluminoferrite hydrates. BSS6.

photography, high voltage Laue, large single crystals, 6117. photon albedo, high energy, 6112. photon flux and total beam energy, determination

of differential, 5283. photovoltaic effect produced in silicon solar cells, J 64A4-52, 297 (1960). protection standards, concepts and meaning. 3767. rooms, medical, walls, for determining protective barrier requirements, 3628. scattering study of tooth structure, 911A.

sealed gamma-ray sources, safety standards for non-medical. Part I. General, H93. 738
soft, interpretation of maxima, 6154.

soft, region (20-100 kv), design of free-air ioniza- tion chambers, 3176.

soft, spectroscopy, annotated bibliography, Mono.52.

solution, spectrometric analysis of copper-base al- loys, M260-5.

spectrochemical analysis, 4961. spectrochemical analysis of materials: cement and

dental alloys, 9145. spectrometric analysis of noble metal dental alloys, J 68A1-251, 5 (1964).

spectroscopy, lead in leaded steels, 4573. study of a cadmium borate glass, 5863. study of isothermal thickening of lamellae in bulk

polyethylene at the crystallization temperature,

9146.

total beam energy, calorimetric calibration of an

ionization chamber, J 66A5-172, 371 (1962).

total, beam energy with a calibrated ionization chamber, Mono.48. X-ray diffraction, 4681; 5128. low-angle, of crystalline nonoriented polyethylene and its relation to crystallization mechanisms,

4153. measurement of intragranular misorientation in alpha brass subjected to reversed plastic

strain, J 65C1-55, 57 (1961). powder patterns, standard, C539, Vol. 10; Mono.25, Sect. 1 to 4. single crystal, high pressures, J 69C4-208, 275

(1965) . studies and their crystal-chemical implications, 3917.

studies at higfh pressures, diamond cell, J 66A4-167,

325 (1962). study of a cellular teleost bone, 3918. techniques, diborane and the products of a micro- wave discharge in diborane, exploratory study, low temperature, 3208. X rays, gamma rays and neutrons, standards, instru- ments and measurement techniques, H85. NBS free-air chamber for measurement of 10 to 60 kV, J 69C1-184, 39 (1965). penetration and diffusion, 3280. resinography, 5644. steady state response of silicon radiation detectors of the diffused P-N junction type. II: Photodiode mode of operation, J 70A2-394, 181 (1966) . Xe and Kr, neutral, optically observed inner shell elec- tron excitation, 6274. Kr, Ar, Ne, He, and Hg, elastic resonances in electron scattering, 6721. Xenon, and carbon arcs as radiation sources for labora- tory weathering of asphalts, 6645. photosensitized formation of metastable nitrogen,

9144. resonance lines, vacuum ultraviolet photochemistry,

photolysis of cyclopropane, 5840.

solid, krypton, and argon in the vacuum ultraviolet, absorption spectra, 3416A.

Xylenes, 5789. ari/Zo-Trihydroxycyclohexenediolic acid and keto-inositols. Cyclic polyhydroxy ketones II, J 68A3-

275, 287 (1964). Yale University, New Haven, Conn., J 68D5-364, 653

(1964). Yarn structure, 4945; 4946. Yarns subjected to rapid impact loading, 3795; 4318;

4945; 4946; 5706; 9047. subjected to rifle bullet impact, stress-strain properties of textile, 9046.

textile, rapid impact loading, 3740.

textile, stress-strain curves and breaking energy

data, 4318.

textile, use under ballistic impact conditions, 3995.

Years, APS division of electron physics—the first 20, 5928. Years of the quiet sun 1964-1965, international geo- physical calendar, 5422; 6151.

Yield, ideal, Simon liquefier, 5397. strength, raising and lowering in reverse directions, J 65C4-79, 265 (1961).

strengths, different, shear strength of beams with- out web reinforcement containing deformed

bars, 5654. You can always tell a computer but you can't tell it much, 9147. Youden's rank sum test for outliers and tables of onesided percentage points, general application, J

68B2-116, 55 (1964). Young's modulus, alumina, 4618. one-dimensional model of a solid, coefficient of thermal expansion, 5238. refractive index as the result of successive heat

treatment, changes in relation, 5945. several oxides, 4084.

single crystal corundum from 77°K to 850°K, 4414. vitreous germania and silica, temperature dependence, 3809. Ytterbium spectra (Yb I, n, III, iv), wavelengths,

intensities, and Zeeman patterns, J 70A1-386,

63 (1966).

Yttria, zirconia, mixtures by precipitation with cupferron, separation and determination of zir- conium, 6362. Yttrium-88 and zinc-65, M260-9.

chloride vapor, mass spectrum, 6846; 9085.

chlorine surface reaction, mass spectrometric investigation, 6191. gallium-substituted, iron garnet, nuclear magnetic

resonances of 09 Ga and "Ga, 6234. iron garnet, nuclear resonance study of galliumsubstituted, 6899. Z-transform theory, synthesis of linear antenna arrays, an application of the inverse, 5909. Zeeman, effects of Ta II, J 66A2-146, 111 (1962).

filter, 9148.

filter, Hglos

, wavelength, relative to that of the 2537-A absorption line of an atomic beam,

5857.

level crossings, hyperfine structure of Hg193 *, Hg196 and Hg135 *, 6786. microwave, effect of free hydroxyl radicals, 4180;

4773. microwave spectrum of atomic oxygen, 3261. modulation microwave spectrometer, 3720.

optical, effect, zero-field theory, and microwave

transition probabilities, 4903. patterns in ytterbium spectra (Yb I, II, III, iv), J

70A1-386, 63 (1966).

proton, and rubidium-87 transition frequencies in the earth's magnetic field, 4537.

refiner with temperature control, 9149. microwave, atomic fluorine, 4361. Zeeman-split, Hg193

, absorption filter, 5858. Zener diodes as voltage standards, comments, 5247.

diodes, making precision voltage measurements,

6188. reference diodes and their measurements, operat- ing characteristics, 6467. Zenith [OI] 5577 A, TN329.

absolute, intensities of [OI] 5577, comparative

study, 3374.

angle, solar, annual variation in E-layer ionization, dependence of critical frequency of the iono- spheric S-layer, 6680. intensity of [OI] 5577 at College, Alaska, 3811.

Zeolite and charcoal, synthetic, silical gel adsorption of methane and nitrogen, 5732. Zephyr, semi-automatic instruction, 306A.

Zero, dimension, is constant, bounded automorphic form,

6540. 739
field theory, optical Zeeman effect, and microwave

transition probabilities, 4903. frequencies and the 21 test, a note on contingency

tables, 5150.

Zeros, first derivatives of Bessel functions of the first kind,

J'Sx), 21<n<51, 0<z<100, J 67B3-102, 181

(1963). infrapolynomials with prescribed values at given

points, 5811. intrapolynomials with some prescribed coefficients, 4384; 6256. Jo(x), some infinite sums involving, J 68B1-111,

17 (1964). maximum number, power of an undercomposable

matrix, 5017. polynomials and fractional order differences of

their coefficients, 5864. polynomials in several variables and fractional or- der differences of their coefficients, J 68B3-

124, 115 (1964).

Zeta, Riemann, function, AMS55.

Zinc cleavage surfaces, thermally evaporated, morphology, 6218. coated and uncoated wire and wire products, at- mospheric corrosion investigation, 4396. doped copper acetate monohydrate, electron para- magnetic resonance spectra. 6733. dust and sodium iodide in N, Af-dimenthylforma- mide on contiguous, secondary sulfonyloxy

groups, action of; a simple method for intro- ducing nonthermal unsaturation, 6580A. magnesium, cadmium, and mercury, spectra, 4686. oxide as a standard substance in the solution calo- rimetry of portland cement, J 66A5-173, 381

(1962). oxide-eugenol type cements, 4690. oxide-eugenol type filling materials and cements,

6559. oxide hydrogenated rosin, o-ethoxybenzoic acid and

eugenol, physical properties of cements, 6290.

oxide, white lead in white paint pigments, polaro- graphic analysis, 9092. Zinc(II), nickel(II) and manganese(II) ions, and some

symmetrically substituted ethylenediamines, complex formation, 5252. Zirconia yttria mixtures by precipitation with cupferron, separation and determination of zirconi- um, 6362.

Zirconium, freezing, of common impurities and for pre- paring zirconium sulfate and oxide, 482A. high-temperature thermodynamic functions, J

67A5-230, 403 (1963).

iron, aluminum, and titanium, method for the sep- aration of from one another and for their sub- sequent determination, J 64A6-79, 535 (I960). separation from hafnium and their determination:

separation by anion-exchange, J 66A6-187, 517

(1962) . separation of hafnium from, by anion exchange, J

65A1-87, 75 (1961).

sulfate and oxide, method for freezing zirconium

of common impurities, 482A. Zirconium hydrides, 5084.

beta, statistical model, 6400. correlation of thermodynamic properties, J 67A5-

230, 403 (1963). thermophysical properties, 4596. unsaturated, high-temperature thermodynamic

functions, J 67A5-230, 403 (1963). Zirconium in zirconia yttria mixtures by precipitation with cupferron, separation and determination,

6362. Zodiacal light, absolute photometry, 9058. Zonal harmonic perturbations of an accurate reference

orbit of an artificial satellite, J 67B4-103, 191

(1963) . Zonal harmonics, with improved summation techniques, theory, J 66D6-234, 737 (1962). low frequency terrestrial radio wave propagation, TN335.

Zone, auroral, distribution at times of magnetic micropulsation storms, 4915. auroral, electron, 4480.

electron, auroral, precipitation observed by balloons, a study of geomagnetic effects, 5888.

fresnel, diffraction effects, at 50 Gc/sec, determined from measured aperture field data, 5367. melting, analog simulation, J 65C2-60, 97 (1961);

5915.

refiner with temperature control, 9049. southern auroral, occurrence of short-duration cos- mic noise absorption events, 5778. Zones, auroral, electron precipitation and ionospheric radio absorption, 6733A.

740

"sir U.S. GOVERNMENT PRINTING OFFICE: 1967 O 233-784
ANNOUNCEMENT OF NEW CATALOG OF PUBLICATIONS

Publications Section,

A617, Administration Building,

National Bureau of Standards,

Washington, D. C. 202^4. Dear Sir: Please add my name to the list to receive

announcements of the new NBS catalogs of publications

as they are issued. Name

Company Address

City State Zip Code.