[Facing page 20. 
MAP V 
Number of Acres of WHEAT per 100 Acres of Arable Land in 1925 
Ry 
I= 
— 
KEY a 
ES 
pk 
6 fol 
11 ro Jt 
16 [ob 2 
21 fo 2: 
26 and ov 
a 
& 
Lands Fed 
soit 1 
ay