270 DRY-FARMING 



soil containing 70 per cent of water, it was only 5.2 

 per cent. Carleton, in a study of analyses of the 



Fk;. 64. Dry-farm Brome-grass. Montana, 19US. Yield, 1.4 tons per acre, 



same varieties of wheat grown in humid and semi- 

 arid districts of the United States, found that the 

 ]3ercentage of protein in wheat from the semiarid 

 area was 14.4 per cent as against 11.94 per cent in the 



