LUTHER BURBANK 



The first crop of clover is usually cut for hay, 

 and a second crop used to turn under in the fall 

 to fertilize the soil. Thus this plant occupies a 

 unique place among farm products. It not only 

 supplies a valuable forage food, but it also helps 

 the farmer to keep his land in a condition of 

 perennial fertility. 



— There is nitrogen, worth 

 millions of dollars, in the air 

 over every farm in Amer- 

 ica — and by the simple proc- 

 ess of raising inoculated 

 legumes, we can extract 

 and employ it — not only 

 without expense, but at 

 the same time producing 

 crops of unusual profit. 



