COMMERCIAL FERTILIZERS. 



351 



English Superphosphate. 



(Sent on from New York.) 



Moisture, .... 

 Volatile and organic matter, 

 Total phosphoric acid, 

 Soluble phosplioric acid, . 

 Reverted phosplioric acid, 

 Insoluljle phosphoric acid, 

 Potassium oxide. 

 Insoluble matter, 



Per cent. 



18.32 



13.12 



8.54 

 0.64 

 3.94 

 1.72 

 9.58 



Valuation per ton of two thousand pounds : — 



170.8 pounds of soluble phosphoric acid, . . . $21 35 

 12.8 pounds of reverted phosphoric acid, . . . 1 15 

 78.8 pounds of insoluble phosphoric acid, . . . 4 73 

 34.4 pounds of potassium oxide, 1 72 



$28 95 



Ground Fertilizing Bone. 



(O. H. Leach & Co., Boston, Mass.) 



Per cent. 



Moisture, 3.93 



Organic and volatile matter, 02 75 



Ash constituents, 37.25 



Total phosphoric acid, 18.58 



Nitrogen, 2.37 



Insoluble matter, 0.43 



L. D. Darli7ig & Co., Bones. (Ground Bones.) 



(Collected by MessrB. Parker & Gannett, Boston.) 



Per cent. 



Moisture, 7.83 



Organic and volatile matter, 42.63 



Ash constituents, . . . . . . . . 67.37 



Total phosphoric acid, 22.16 



Total nitrogen, . 3.29 



Insoluble matter, 0.29 



Bone Fertilizer. (Bone Factory, Ilolyoke, Mass.) 



(Collected by Messrs. Wilder & Puffer, Springfield.) 



Moisture, .... 

 Organic and volatile matter. 

 Ash constituents. 

 Total phosphoric acid, 

 Total nitrogen, . 

 Insoluble matler, 



Per cent. 

 7.10 

 37.84 

 62.16 

 24.56 

 3.13 

 0.20 



