CHAPTER VII 



, DRY-FAHMING ZONES 



ALTHOUGH dry-farming is now 

 L practised in almost every State in 

 the semi-arid West, it is desirable to rec- 

 ognize three distinct areas each of which 

 has certain peculiarities of climate and 

 soil. The first has been termed the Great 

 Plains; the second, the Great Basin; and 

 the third, the Columbia Basin Uplands. 



THE GREAT PLAINS 



The vast territory now widely known 



as the Great Plains area is bounded on 



the north by Canada, on the west by the 



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