COMMERCIAL FERTILIZERS. 



225 



Castor-Bean Pomace, St. Louis. 



(Collected of Messrs. Ilorton & Pbelps 



Moisture lost at 100° C. 

 Nitrogen . 

 Phosphoric acid 

 Potassium oxide 

 Calcium oxide 

 Magnesium oxide 

 Insoluble matter 



Northampton, Mass.) 



Per 

 9 

 5 



2 

 1 



cent. 



.50 



.66 



.22 



.70 



.77 



.20 



.12 



Valuation per ton of two thousand pounds : 



113.2 pounds of nitrogen .... 



44.4 pounds of phosphoric acid 

 34 pounds of potassium oxide 



I. 



$16 98 

 2 22 

 1 53 



$20 73 



Valuation per ton of two thousand pounds : 



120 pounds of phosphoric acid 

 95.8 pounds of nitrogen .... 



%7 20 

 19 16 



$26 36 



IT. 



Fish-Scraps. 



(Quinnipiac Fertilizer Company; collected of Messrs. Horton & Phelps, 

 Northampton, Mass.) 



Per cent. 



