COMMERCIAL FERTILIZERS. 



539 



BHgMman & Co.'s Ammoniated Bone Superphosphate. 

 (Collected of P E.. Atwood, Plymouth, Mass.) 



Guaranteed composition : Available phosphoric acid, 8 to 

 10 per cent. ; potassium oxide, 3 to 5 per cent. ; ammonia, 

 3 to 5 per cent, (equivalent to nitrogen, 2.5 to 4 per cent.). 



Per cent. 



Moisture at 100° C, 16.17 



Total phosphoric acid, 9.72 



Soluble phosphoric acid, 5.21 



Eeverted phosj^horic acid, 2.78 



Insoluble lihosjihoric acid, 1,72 



Potassium oxide, 3.31 



Nitrogen, .- . . . 2.60 



Insoluble matter, . 6.81 



Valuation per two thousand pounds : — 



104.2 poimds of soluble phosphoric acid, 

 55.6 pounds of reverted j^hosphoric acid, 

 34.4 pounds of insoluble iihosphoric acid, 

 66.2 pounds of jDotassium oxide, . 

 52.0 pounds of nitrogen, 



f25 45 



Bay State Fertilizer. 



(Clark's Cove Guano Company, New Bedford, Mass. ; collected of P. R. Atwood, 



Plymouth, Mass.) 



Guaranteed composition : Total phosphoric acid, 9.5 to 

 14 per cent. ; soluble phosphoric acid, 7 to 8.5 per cent. ; 

 reverted phosphoric acid, 1 to 2.5 per cent. ; insoluble 

 phosphoric acid, 1 to 3 per cent. ; potassium oxide, 2 to 3 

 per cent. ; nitrogen, 2.1 to 2.8 per cent, (equivalent to am- 

 monia, 2.5 to 3.5 per cent.) ; moisture, 8 to 10 per cent. 



Per cent. 



Moisture at 100° C, 14.32 



Total phosphoric acid, 11.78 



Soluble phosphoric acid, 8.43 



Reverted iihosphoric acid, 2.77 



Insoluble phosphoric acid, .58 



Potassium oxide, 1.83 



Nitrogen, 2.72 



Insoluble matter, 6.04 



