INSPECTION OF COMMERCIAL FERTILIZERS 

 FOR THE SEASON OF 1930 



By H. D. Haskins, Official Chemist' 



MANUFACTURERS AND BRANDS 



During the season of 1930, 118 firms or individuals have rcfiistercd for sale in 

 Massachusetts 598 brands of mixed fertilizer and fertilizing materials. The 

 general nature of these products is shown below. 



Complete fertilizers 361 



Ammoniated superphosi)hates 2 



Superphosphates with potash '. , • i 



Ground bone, tankage and dry ground fish 59 



Fertilizer simples, including organic nitrogen compounds .... 146 



Pulverized manures 21 



Wood ashes 1 



Peat products 5 



Stone meal 2 



Total 598 



1 Assisted by H. Robert DeRose, Albert F. Spelman, .John B. Zielinski, .Ir., and George J. Lar- 

 sinos, Chemists; James T. Howard, C. L. Whiting, A. G. Brigham and G. E. Taylor, Sampling 

 Agents; Cora B. Grover, Clerk. 



