8 . 



TRADE VALUES i.-^ . 

 OF FERTILIZING INGREDIENTS IN RAW MATERIALS 

 AND CHEMICALS. 



1893. 



Cents per pound. 



Nitrogen in ammonia salts, 17 



" " nitrates, 15^ 

 Organic nitrogen in dry and fine ground fish, meat, blood, 



and in high-grade mixed fertilizers, 171 

 " " " cotton-seed meal, linseed meal and 



castor pomace, 16| 



" " " fine ground bone and tankage, 15 



" " " fine ground medium bone and tankage, 12 



" " " medium bone and tankage, 9 



" " " coarse bone and tankage, 7 

 " " "' hair, horn-shavings and coarse fish 



scraps, 7 



Phosphoric acid soluble in water, 6^ 



" " soluble in ammonium citrate, 6 



" " in fine bone and tankage, 6 



" " in fine medium bone and tankage, 5 



" "■ in medium bone and tankage, 4 



" " in coarse bone and tankage, 3 ' 

 " " in fine ground fish, cotton-seed meal, linseed 



meal, castor pomace and wood ashes, 5 



'* " insoluble (in am. cit. ) in mixed fertilizers, 2 

 Potash as High Grade Sulphate, and in mixtures free from 



The 



The Bulletins oj the Mass. Experiment Station will he sent free of 

 charge to all parties interested in its work, on application. 



C. A GOESSMANN, Director. 

 Amherst, Mass., August 5, 1893. 



Carpenter Jt Morehowge, Printers, Amherst, Mass. 



