HATCH EXPERIMENT STATION 



-OF THE 



MASSACHUSETTS 



AGRICULTURAL COLLEGE. 



BULLETIN No. 31. 



COMMERCIAL FERTILIZERS. 



JXJIv^^, ISO^, 



The Bulletins of this /Station will be serit free to all newspapers m 

 the State and to such individuals interested in farming as may request 

 the same. 



AMHERST, MASS. : 



PRESS OP" CARPENTER & MOREHOUSE. 



18 9 5. 



