Special feature of this globe is that it is supported by a half-inch diameter tube and rotated

by internal mechanism so balanced that the axis of the earth is inclined in the proper relation. Celluloid of Australia is removable as a man-hole cover so that a small workman may go inside if necpssary. Mirror below assists in accenting the southern polar region relative to Australia.

GRAPHIC PRESENTATION

Ford Motor Compnny.

Globe Used in the Ford Exhibit in the Rotunda Building in Dearborn, Michigan.

This relief globe docs not Rive the names of countries or cities, hut the character of the land and its relation to sources of supply and distribution of product are strikingly shown.

See 155 and 156

Bureau of Chemistry and Soils, U. S. Department of Agriculture. Maps showing the character of soils.

Soil Conservation Service, U. S. Department of Agriculture. Maps compiled from aerial photographs.

Bureau of Public Roads, U. S. Department of Agriculture. Maps of the United States showing the federal aid system of highways. Maps of some of the states.

Bureau of Agricultural Economics, U. S. Department of Agriculture. Various maps relating to agricultural economics.

Chapter 19 GUIDE AND ROUTE MAPS

o

ne purpose of guide and route maps is to show details which might be helpful in planning moves from one point to another. The form of guide and route maps is well known, and may be used for classifications as well as for routes.

REFERENCES

National Resources Committee, Suggested Symbols for Plans, Maps and Charts, Washington, D. C. A free pamphlet, sent on request.