New Britain herald., 1924-11-24
NAVY ID SEARCH
 SECRETS OF SEAS
New Equipment to Be Used in
 Scientific Research

Washington, Nov. 2i Various forms of scientific apparatus are ex- pected to be brought into play in the navy's proposed expedition to learn more about oceans, their chemistry resources and bottoms.
 The U. S. S Rainbow, which has been suggested as the craft 10 ini- tiate the sea exploration program in the Gulf of Mexico Caribbean region, Is $50 feet long, has q draft of 17 feet and displaces 1850 tons, and is amply provided with comfortable quarters and cabins to take care of extra personnel for scientific work, naval officers say. Sufficient room exists aboard for laboratories and tanks for collecting living specimens.
 The latest type or sonic depth finders and radio would be installed on the Rainbow, under plans map ped out by special conference on oceanography, which has just made it's final report 10 the secretary Of the navy. With her officers and crew gathered from the naval es- tabishment, the Rainbow would carry a specially selected scientific personnel, consisting of one ocean ographer, one biologist, one geolo- gist and six or more scientific assist . f1fc I, oi the first three should. be outstanding in their special fields and the young, CT scientists might be drawn from universities, colleges and other in, stitutions. While subsistence ana travel expenses to and from theil homes for the scientists were includ- ed in an estimated cost of the ex. petition, the conference expected that sources outside the government would dcfray their salaries.
 The sonic deptth finder, developed by naval men after it's invention by Dr. Harvey C. Hayes, rapidly deter. mines ocean depths and Is expected to play a major part in the eXpCdi. tion. An apparatus for determining the salinity of sea water from meas. urements of ifs electrical conductiv' ity was advocated for use, in duscus. sions in the conference. A proposed design of automatic recording ther. mometer to supply a tome tPmpcra' | ture record on a chart, accompan' jed by a simultaneous depth record 1 to be registered aboard ship aHstht i thermometer Is lowered, was men, toned by Dr. L. J, Briggs, chief o the Division of Mechanics and Sound
 Bureau of Standards, in offering th' aid of the bureau In an advisory ca pacity regarding design Of apparatu! 1 for temperature measurements.
 Data concerning interference in re i mote portions of the globe between high powered stations is to be sought 1 during the expedition and the in' stallation of equipment for mcasur' ing intensities of radio signals from l different stations has been urged AT instrument from which the number of dust particles in the atmosrher' may be counted has been devised by tho weather bureau and was sug gested for use on the expedition il the study of visibility.
 The expedition, it was pointed out affords exceptional opportunity to testing various devices and method
 developed as aids to navigators, II this connection 1t was suggested tha a comparative study be made o taftrail logs and of Pitot tube speet indicators. An artificial horizon ! gyrostatically stabilized, might als' be tested in making sextant Obscrva tiens, when the sea horizon is oo srnrAI