LEGUMES AND INOCULATION 169 



inhabited by thousands of useful germs, or plants too 

 small to be seen by the naked eye. When the tubercle 

 decays, these germs are set free, and spread through the 



FIG. no. SORGHUM FROM EQUAL AREAS 



In center, fertilized with rye ; on left, with vetch, entire 



growth ; on right, with vetch stubble. 



soil by means of water. These little workmen are alive. 

 They must wait until the same kind of legume is planted 



