10 



COBN CROPS 



Fig. 1. — Corn production in the United States. 



Corn per square mile, cenaua 1900: Black shading, more than 3200 bu. ; next 

 shading, 640 to 3200 bu. ; next-to-bottom shading, 64 to 640 bu. ; bottom shading, 

 less than 64 bu. 



Fig. 2. — Map showing average yield per acre, average farm price per 

 bushel, and average shipment out of county where grown for grand 

 divisions of the United States. 



