CO^LMERCIAL FERTILIZERS. 



305 



57.6 pounds of nitrogen (In organic matter), 



7.4 pound-s of nitrogen (in nitrates), . 

 48. pounds of potassium oxide, . 



$11 52 



1 33 



2 04 



$;)7 19 

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

 (Collected of B. L. Bragg & Co. Springfield, Mass.) 



Guaranteed composition : Total phosphoric acid, 10 to 13 

 per cent. ; soluble phosphoric acid, 6 to 8 per cent. ; re- 

 verted phosphoric acid, 3 to 4 per cent. ; insoluble phos- 

 phoric acid, 1 to 2 per cent. ; potassium oxide, 1 to 2 per 

 cent. ; ammonia, 2 to 3 per cent, (equivalent to nitrogen, 

 l.G to 2.5 per cent.). 



Moisture at 100° C, 

 Total pliosplaoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide. 

 Nitrogen (in organic matter), 

 Nitrogen (iu nitrates), . 



Valuation per two thousand pounds : — 



132.4 pounds of soluble phosphoric acid, 

 60. pounds of reverted phosphoric acid, 

 43.4 pounds of insoluble phosphoric acid, 



37. pounds of potassium oxide, 



64.6 pounds of nitrogen (in organic matter), 

 4.6 pounds of nitrogen (in nitrates), .... 



$33 91 

 E. Frank Coe''s Ammoniated Bone Superphosphate. 



(Collected of C. J. Othick, Feeding Hills, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 9 to 12 

 per cent. ; insoluble phosphoric acid, 2 to 3 per cent. ; am- 

 monia, 2.]- to 3 per cent, (equivalent to nitrogen, 2 to 2.47 

 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Revcrte I phosphoric acid. 

 Insoluble p!io=!phoric acid, 

 Pota-sium oxide, 

 Nitroiijen (in organic matter), 

 Insoluble matter, . 



Per cent, 

 1276 

 11.60 

 4.51 

 2.91 

 4.18 

 1.18 

 2.14 

 6.78 



