COMIVIERCIAL FERTILIZERS. 



363 



Zee, Blackburn & Co.'s Ground Bone. 

 (Collected of Scott & Vietor, Lawrence, Mass.) 

 No guaranty stated. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



160.2 pounds of soluble phosphoric acid, 

 284.2 pounds of insoluble phosphoric acid, . 

 49. pounds of nitrogen, .... 



Per cent. 



11.90 

 22.22 

 none. 



8.01 

 14.21 



2.45 

 .90 



$12 02 



14 21 



7 35 



$33 58 

 George W. Miles' Fish and Potash. 



(Collected of B. F. Bridges, Jr., South Deerfield, Mass.) 



Guaranteed composition : Available phosphoric acid, 5 to 

 8 per cent. ; insoluble phosphoric acid, 1 to 3 per cent. ; 

 potassium sulphate, 4 to 6 per cent. ; ammonia, 3 to 6 per 

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



Per cent. 



14.75 



10.75 



6.08 



2.70 



1.97 



3.08 



2.32 



5.88 



Moisture at 100° C, 



Total phosphoric acid, 



Soluble phosphoric acid, .... 

 Reverted phosphoric acid, .... 

 Insoluble phosphoric acid, .... 



Potassium oxide, 



Nitrogen, 



Insoluble matter, 



Valuation per two thousand pounds : — 



121.6 pounds of soluble phosphoric acid, 

 54. pounds of reverted phosphoric acid, 

 39.4 poimds of insoluble phosphoric acid, 

 61.6 pounds of potassium oxide, . 

 46.4 pounds of niti'ogen, 



$9 73 

 4 05 

 1 18 

 3 39 

 7 89 



$26 24 

 B. F. Bridges, Jr., ^^ Fish Fertilizer." 

 (Collected of B. F. Bridges, Jr., South Deerfield, Mass.) 



Guaranteed composition : Total phosphoric acid, 3 to 4 

 per cent. ; nitrogen, 2| to 4 per cent. ; potassium oxide, 3 

 to 4 per cent. 



