BULLETIN No. 135. NOVEMBER 1910. 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



INSPECTION OF 



COMMERCIAL FERTILIZERS 



BY 



H. D. HASKINS, L. S. WALKER and J. F. MERRILL. 



This bulletin gives a detailed report of the fertilizer inspection 

 for 1910. It summarizes the main points of the fertilizer law, 

 states the number of fertilizers collected and analyzed, gives the 

 trade values of fertilizer ingredients, discusses valuations, retail 

 cash prices and percentages of difference. It makes clear the 

 economy of buying only high grade fertilizers by showing the 

 cost per pound of the -several elements in the different grades. 

 Mention is made of all brands showing a noticeable commercial 

 shortage and the tables of analyses give the detailed composition 

 of all fertilizers sold in Massachusetts. 



Requests for bulletins should be addressed to the 



Agricultural Experiment Station, 



Amherst, Mass. 



