ion Board, in which connection
they met weekly to exchange information for the purpose of getting
better coordination and less duplication.

The National Academy of Sciences established a geologic committee, with
representatives from the U. S. Geological Survey, the state geological
surveys, the Geological Society of America, and other organizations.
This committee did useful work in correlating geological activities,
mainly outside of Washington, and in cooperation with the War Department
kept in touch with the geologic work being done at the front.

While the activities of geologists for government, state, and private
organizations were for the most part in relation to mineral resource
questions, this was by no means the total contribution. The U. S.
Geological Survey and other organizations, in cooperation with the War
Department, did a large amount of topographic and geologic mapping of
the eastern areas for coast-defense purposes. This work involved
consideration of the topography for strategic purposes, as well as the
stock-taking of mineral resources--including road materials and water
supplies. The revision of Geological Survey folios, with these
requirements in mind, brought results which should be of practical use
in peace time. Studies were likewise made of cantonment areas, with
reference to water supplies and to surface and sub-surface conditions.

Many geologists were engaged in the military camps at home and abroad,
and in connection with the Student Army Training Corps at the
universities, in teaching the elements of map making, map
interpretation, water supply, rock and soil conditions in relation to
trenching, and other phases of geology in their relation to military
operations. The textbook on Military Geology,[61] prepared in
cooperation by a dozen or more geologists for use in the courses of the
Student Army Training Corps, is an admirable text on several phases of
applied geology. The name of the book is perhaps now unfortunate,
because most of it is quite as well adapted to peace conditions as to
those of war. There is no textbook of applied geology which covers
certain phases of the work in a more effective and modern way. The
topics treated in this book are rocks, rock weathering, streams, lakes
and swamps, water supply, land forms, map reading and map
interpretation, and economic relations and economic uses of minerals.
Another book,[62] on land forms in France, prepared from a physiographic