The Clarksburg telegram. [volume] (Clarksburg, W. Va.) 1874-1926, 1912-12-26
GEOLOGY
Of North Amer.ca Discussed
in a Publication by the
Government.

NtAS'I1AsNGASsNgs -. Ast DEG. -b--S
II IS now four years since the uai,ed
States Geological Survey published
as a help to teachers and students
Of. geography and photography o
paper By Professors Salisbury and
Atwood, OF tho University OF Chiea,
20, ca The Interpretation of To-
pographlc Maps" Tho demand for
this publication, which wa8 strictly
educational In character. was 30
great that, Notwithstanding two cdi-
tons were printed. cyra the small
allotment had for sale Is nov nearly
exhausted. Meanwhile teachers Of
geography in all grades in mans
parts Of the country have Betsa ra.
ce.ving most practical aid III their
work as tho Geological Survey. has
issued topographic sheets covering
the areas In the vicinity or their
schools. The Survey has also rec
ognizsd the needs OF professional
men educationally Interested in the
d fferent branches OF geology by the
publication OF such works as
Clarke's Data Of Geochcmistry,"
now in it's second edition, and pa
pers ca paleontology ana g'aciol-
o!ogy. Il
{ Tho Survey has now issued an
other large work which will be Of
especial valueto teachers and adj
vaaced students OF geology. This
work, which concerns biologists
more than Beographers and which is
printed as Professional Paper II OF
the Survey, is entitled Index to
the Stratigraphy Of North America.
by Bailey Willis. accompanied by q
geologic map OF North America,
complied by the Uniteds tates Geo.
logical Survey IN cooperation with
the Geological Survey of Canada
and the Institute Geologigo de Mex
leo, under the supervision of Bailey
Williams and George w. Stose." AS
its title implies. this large volume,
comprising nearly 900 pages. is
description OF the photographic geol-
ogy OF the continent; It is not in any
sense text book in geology. The
author of this report. which is com
prehensiye in its scope and natural
ly has been very Difficult OF prepa-
ration is geologist OF international
reputation, formerly chief geologist
Of the United States Geological Sur.
vey and now temporarily engaged in
the organization Of surveys for the
government of Argentina.
Tho preparation of this great work
required the examination OF a vast
amount of geologic literature Of all
sorts. published during more than
a score of years and covering Groen-
hand. British America, Central
America and the West Indies. as
we'll as the United States. In isl
accomplishment, and particularly
in the compilation OF the map, Mr..
Willis received the friendly cooper
alton OF the Canadian and Mexican
geological surveys. as we'll as Of the
state biologists OF our own country.
For the most part. the description OF
the several regions or districts arel
other from the original authors orI
presented in the form of abstracts.
tho work is essentially a,
compilation or combination OF pub,
lished geologic knowledge OF the
continent, It contains also much
unpublished Information,
BY the author and his
The new data concerA
principally tho geology Of Mexico.
Cuba. the western states and ca1-i
ada.
On account of the long time re-
quired for the elaboration of this
great task, a preliminary soparatel
edition Of the geologic map Of the
continent was published over q year
ago. The entire edition of this map.
though obtainable only by purchase
and at a relatively high price, was
exhausted before the appearance
of the explanatory text. An edition
has been printed TO accompany tho
text and the whole IS now obtain-I
able gratis from the survey
For easy and simple reference
from the map to the text aad vice
versa, the map is divided. in accord
anee with tho scheme adopted for
the stanard International map Of tho
world, into rectangular areas forming
zones or tiers aad Ser-
teal rows, four degrees OF LATITUDE
in height and six degrees of longi-
tude in width, each esst-west zone
OF tier being designated by letter
and each north-south row by, num-
Der. The map is about six feet high
by ave feet vide, on scale approx