COMMERCIAL FERTILIZERS. 



327 



Valuation per two thousand pounds : — 



123.4 pounds of soluble phosphoric acid, 

 23.6 pounds of reverted phosphoric acid, 

 84. pounds of insoluble phosphoric acid, 



101.8 pounds of potassium oxide, . 

 42. pounds of nitrogen (in organic matter), 

 21.8 pounds of nitrogen (in nitrates), . 



$34 89 



Williams, Clark & Co.'s " Americus " Ammoniated Bone Superphosphate. 

 (Collected of Slate & DeWolf, Greenfield, Mass.) 



Guaranteed composition : Ammonia, 2 to 3 

 (equivalent to nitrogen, l.G to 2.5 per cent.) ; 

 oxide, 1 to 2 per cent. ; soluble phosphoric acid, 

 cent. ; reverted phosphoric acid, 3 to 4 per cent. ; 

 phosphoric acid, 1 to 3 per cent. 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen, 

 Insoluble matter. 



per cent, 

 potassium 

 6 to 8 per 



insoluble 



Per cent. 



15 89 

 9.28 

 5.08 

 3.02 

 1.18 

 1.83 

 1.86 

 6.28 



Valuation per two thousand pounds : ■ 



101.6 pounds of soluble phosphoric acid, 

 60.4 pounds of reverted phosphoric acid, 

 23.6 pounds of insoluble phosphoric acid, 

 36.6 pounds of potassium oxide, . 

 37.2 pounds of nitrogen, 



$10 16 

 5 44 

 1 06 

 1 56 



7 44 



$25 66 

 Bay State Fertilizer. 



(Clark's Cove Guano Co., New Bedford, Mass.; collected of E. S. Snow, Belcher- 

 town, Mass.) 



Guaranteed composition : Moisture, 10 to 18 per cent. ; 

 nitrogen, 2.1 to 2.8 per cent. ; (ammonia, 2.5 to 3.5 per 

 cent.) ; total phosphoric acid, 11 to 14 per cent. ; soluble 

 phosphoric acid, 7 to 8 per cent. ; reverted phosphoric acid, 

 1 to 2 per cent. ; insoluble phosphoric acid, 3 to 4 per 

 cent. ; potassium oxide, 2 to 3 per cent. 



