BULLETIN No. 131. DECEMBER 1909. 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



INSPECTION OF 



COMMERCIAL FERTILIZERS 



BY 



H. D. HASKINS, L. S. WALKER and P. V. GOLDSMITH. 



This bulletin gives a general report of the fertilizer inspection 

 work for the season of 1909. It discusses briefly valuations, 

 retail cash prices, and the wisdom of buying only high grade 

 fertilizers. General mention is made of fertilizer brands which 

 show a serious commercial shortage, and summaries indicate 

 the average quality of the fertilizers offered. Conversion factors 

 relating to fertilizers are published and the tables of analyses show 

 the detailed composition of the fertilizers sold in the state. 



Approved and Authorized 

 WM. P. BROOKS, Director. 



Requests for bulletins should be addressed to the 

 Agricultural Experiment Station, 

 Amherst, Mass. 



