384 



DRY-FARMING 



cropping. All other dry-farm districts should take 

 to heart this lesson, for, though cnjps may be pro- 

 duced on fertile soils for one, two, or even three gener- 

 ations without manuring, yet the time will come 



Fig. 102. Threshing in dr\"-f;irrn ilistrict near Moscow, Idaho. 



when plant-food must be added to the soil in return 

 for that which has been removed by the crops. 

 Meanwhile, California offers, also, an excellent 

 examjjle (if the possibility of successful dry-farming 

 through long periods and under varying climatic 

 conditions. In the Golden State dry-farming is a 

 fully established practice; it has long since passed 

 the experimental stage. 



Columbia River Basin 

 The Columbia River Basin includes the state of 



Washington 



most of Oregon, the northern and 



