PLATE XL 



Fig, 1. — Showing a comparison of plants grown on field plots 

 fertilized with calcium cyanamid and with dried blood. 



(1) Narrow leaf vetch grown on plot fertilized with calcium 

 cyanamid. 



(2) Narrow leaf vetch grown on plot fertilized with dried 

 blood. 



(3) Wheat grown on plot fertilized with calcium cyanamid, 



(4) Wheat grown on plot fertilized with dried blood. 



