co:mmercial fertilizers. 



375 



Valuation per two thousand pounds : 



154.8 pounds of soluble phosphoi-ic acid, 

 34. pounds of reverted phosphoric acid, 

 50.2 pounds of insoluble phosphoric acid, 

 60.4 pounds of potassium oxide, . 

 47. pounds of nitrogen. 



$12 38 

 2 55 



1 51 



2 57 

 7 99 



$27 00 



Lister Brothers' Standard Pure Bone Superphosphate. 



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



Guaranteed composition : Available phosphoric acid, 10 

 to 12 per cent. ; insoluble phosphoric acid, 2 to 9 per cent. ; 

 ammonia, 2.85 to 3.25 per cent, (equivalent to nitrogen, 

 2.35 to 2.68 per cent.). 



Per cent. 



Moistui-e at 100° C, 1698 



Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



1159 

 8.51 

 1.41 

 1.67 

 1.80 

 2.85 

 2.23 



Valuation per two thousand pounds : — 



170.2 pounds of soluble phosphoric acid, 

 28.2 pounds of reverted phosphoric acid, 

 33.4 pounds of insoluble phosphoric acid, 

 36. pounds of potassium oxide, . 

 57. pounds of nitrogen. 



$13 62 

 2 12 

 1 00 

 1 53 

 9 69 



$27 96 

 George W. Miles' Dry Fish. 

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



Guaranteed composition : Bone phosphate, 10 to 14 per 

 cent. ; ammonia, 10 to 12 percent, (equivalent to nitrogen, 

 8.2 to 9.9 per cent ). 



Moisture at 100° C, 

 Total phosphoi'ic acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



9.00 

 7.07 

 .67 

 3.36 

 3 04 

 8.59 

 3.04 



