ANALYSIS OF SUPERPHOSPHATES. 333 



Valuation per ton of two thousand pounds : — 



204.6 pounds of soluble phosphoric acid . 

 9.6 pounds of reverted phosphoric acid 

 21.6 pounds of insoluble phosphoric acid 

 96.0 pounds of nitrogen 

 53.6 pounds of potassium oxide . 



xxm. 



Bradley's XL. Superphosphate. 



$51 91 



Valuation per ton of two thousand pounds : — 



171.8 pounds of soluble phosphoric acid 

 3.0 pounds of reverted phosphoric acid 

 26.8 pounds of insoluble phosphoric acid 

 65.0 pounds of nitrogen 

 25.8 pounds of potassium oxide . 



XXIV. 



Soluble Ammoniated Superphosphate. 



$36 53 



(Quinnipiac Fertilizer Co., New Haven, Conn.; collected of D. A. Horton, 

 Northampton, Mass.) 



Per cent. 



Moisture at 100° C 22.96 



64.60 



Organic and volatile matter 

 Ash constituents 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 



35.40 

 5.10 

 2.70 

 1.50 

 3.58 

 2.34 



