FERTILIZERS 



THE SOURCE, CHARACTER AND COMPOSITION 

 OF NATURAL, HOME-MADE AND MANUFAC- 

 TURED FERTILIZERS, AND SUGGESTIONS 

 AS TO THEIR USE FOR DIFFERENT 

 CROPS AND CONDITIONS 



BY THE LATE 



EDWARD B. VOORHEES, A.M., D.Sc. 



DIRECTOR OF THE NEW JERSEY AGRICULTURAL EXPERIMENT 



STATIONS, AND PROFESSOR OF AGRICULTURE 



IN RUTGERS COLLEGE 



REVISED EDITION BY 



JOHN H. VOORHEES, B.Sc. 



ASSISTANT AGRONOMIST NEW JERSEY EXPERIMENT STATION 



INSTRUCTOR IN SOIL FERTILITY, NEW JERSEY 



STATE COLLEGE OF AGRICULTURE 



THE MACMILLAN COMPANY 

 1916 



All rights reserved 



