AGRICULTURE UNDER IRRIGATION 



475 



FIG. 179. Work for a man. Irrigation requires strength of body, good intelligence 

 and sound and rapid judgment. 



fifteen or twenty bushels of wheat per acre harvested in the 

 first years of irrigation, forty to fifty bushels are now 

 harvested on the same lands. True, this must be due 

 chiefly to improved methods of culture, with modern 

 tools, but certainly there is in this record no sign of 

 deterioration. 



