86 



Yearbooh of the Defmtment of Agriculture^ 1921. 



Fig. 103. — The Corn Belt is conspicuous on this map, average land values in central 

 Illinois and northwestern Iowa having risen to over $250 an acre in 1919. There has 

 been a decline since. The irrigated areas are also shown on the map as having land 

 values of over $250, but this is not true of all the districts. Even the larger irrigated 

 areas were too small to show other than in black, and many smaller districts could not 

 be shown at all. The regions of low land values are the arid and semiarid lands of 

 the West, the sandy, thin, or stony soils of the upper Lakes area and the North Atlantic 

 States, and the light or leached lands in parts of the South, where also much of the 

 farm may be in forest. The first box in the legend should read $0-$10, the second box 

 $ll-$25. 



