COMMERCIAL FERTILIZERS. 



3r)9 



Americus Brand, Ammoniated Bone Superphosphate. 



(Collected of Wilson & Holden, Worcester, Mass.) 



Moisture, .... 

 Organic and volatile matter, 

 Ash constituents, 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, .... 

 Potassium oxide, 

 Insoluble matter, 



Per cent. 



9.95 



5196 



48.04 



10.88 



9.37 



.67 



.84 



2.38 



2.32 



6.28 



Valuation per ton of two thousand pounds : — 



187.4 pounds of soluble phosphoric acid, 

 -13.4 pounds of reverted phosphoric acid, 

 16.8 pounds of insoluble phosphoric acid, 

 47.6 pounds of nitrogen, 

 46,4 pounds of potassium oxide, .... 



$39 39 



Bosworth Bros.'' Superphosphate. 



(Collected of Wilson & Holden, Worcester, Mass.) 



Moisture at 100° C, . 

 Organic and volatile matter, 

 Ash constituents. 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, .... 

 Insoluble matter, 

 Potassium oxide, 



Per cent. 



6.72 



43.53 



56 47 



13.94 



4.43 



8.11 



1.48 



2.38 



1.60 



6.67 



Valuation per ton of two thousand pounds : — 



88.6 pounds of soluble phosphoric acid, . 



162.2 pounds of reverted phosplioric acid, 

 29.6 pounds of insoluble phosphoric acid, 

 47 6 pounds of nitrogen, 



133.4 pounds of potassium oxide, . . 



$15 50 



