COMMERCIAL FERTILIZERS. 



377 



Valuation per two thousand pounds : — 



172 pounds of soluble phosphoric acid, 

 42.6 pounds of reverted phosphoric acid, 

 27.8 pounds of insoluble phosphoric acid, 

 30.2 pounds of potassium oxide, . 

 74.6 pounds of nitrogen, 



S;>1 75 



George W. Miles' IXL Ammoniated Bone Siqyerphosphate. 

 (Collected of W. S. Westcott, Amherst, Mass.) 



Guaranteed composition : Available phosphoric acid, 8 to 

 12 per cent. ; insoluble phosphoric acid. I to 3 per cent. ; 

 potassium oxide, 1 to 3 per cent. ; ammonia, 2^ to 4 per 

 cent, (equivalent to nitrogen, 2 to 3.3 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid. . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, . 

 Potassium oxide, . 

 IS^itrogen, .... 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



118.4 pounds of soluble phosphoric acid, 

 54.8 pounds of reverted phosphoric acid, 

 37 2 pounds of insoluble phosphoric acid, 

 62 2 povTuds of potassium oxide, . 

 51.4 pounds of nitrogen, 



$26 08 

 Quinnipiac Pine Island Phosphate. 

 (Collected of B. F. Bridges, Williamstown, Mass.) 



Guaranteed composition : Available phosphoric acid, 8 to 

 12 per cent. ; insoluble pho.sphoric acid, 1 to 3 per cent. ; 

 potassium sulphate, 1 to 2 per cent. ; nitrogen, 2 to 3 per 

 cent, (equivalent to ammonia, 2| to 3.^ per cent.). 



Moisture at 100- C, 

 Total phosphoric acid, . 

 Soluble pliosplioric acid, 

 Ficverted phosphoric acid. 

 Insoluble phosplioric acid, 

 Potassium oxide, . 

 Nitrogen, 

 In.solublc matter, . 



Tcr cent. 



17.78 

 10.67 

 7.39 

 2.13 

 1.15 

 2.59 

 293 

 4.35 



