IRRIGATION 123 



analyzed these types of irrigation farming be- 

 fore their advantages or defects can be detected. 

 In fact, an analysis of this character is the only 

 method by which the non-productive factors in 

 a rotation can be detected. By determining the 

 " pay streaks " and improving them and at the 

 same time finding out the " dead heads " and 

 eliminating them so far as practicable is the 

 only sane method of improving the economic 

 condition of the farm unit. It is a question of 

 following and improving the pay and of stop- 

 ping the leaks. The more expensive the plant 

 and the more intensive the industry the greater 

 the importance and significance of such an 

 analysis. 



