AN APPKAISAL OF POWER USED OX FAEMS 
25 
Fig. 25. — Precipitation includes rain, melted snow, sleet, and hail. The map is much reduced and 
generalized from a map prepared by the Weather Bureau and published in the Precipitation and 
Humidity section of the Atlas of American Agriculture. The map suggests why the United States 
should be divided agriculturally into an eastern and a western half. (U. S. Dept. Agr. Yearbook 
1921.) 
68326°— 26 i 
