It differs from a classification chart in that relationships may be shown without any classification of the material used.

GEOGRAOhfy

i^iuoootooy;

.V^vif O (?

CCONOM>CS

From "An Outline of the Principle! of Geology" by R. M. Field, Copyright 1938. Used by Permitiion of the Publithert, Barne* & Noble, Inc. SCALE .6

A. The Relations of Geology To and Its Interrelations With Other Divisions of Knowledge.

1. This diagram suggests that geology is

not an isolated thing, but is bound up with many branches of study.

2. The divisions immediately adjacent to

the center of this chart are the ones most closely related to the science of geology. Those divisions on the outer edges are related to geology through the intermediate subjects.

From "An Outline of the Natural Re»ource» of the United State*" by R. M. Field, Copyright 1936. Used by Permission of the Publishers, Barnes H Noble, Inc. SCALE .6

B. Relation of Natural Resources to Hunnan Activities and Interrelations With Other Branches of Study.

Although similar to the preceding chart, this diagram differs in that relationships around the circle are indicated as well as from the center outward.

RELATIONSHIP CHARTS

SPECIAL W*R WORK ON--

MILITARY MAPPING

Making progr«itiv« miliUry indei map of United States SURVEY OF SITES.

Balloon fields

Ordnance proving grounds

Artillery sites

Areas near cantonments

Aviation fields

ROUTE MAPS.

Airplane routes.

Motor truck routes ENGINEER REGIMENTS.

Contributing 110 officers.

Contributing 164 men.

Training officers and enlisted men

Training school for topographers.

PURCHASE AND SHIPMENT OF INSTRUMENTS

NEW AIRPLANE CAMERA.