COMMERCIAL FERTILIZERS. 



525 



Adams' Fine Ground Bone. 



(Adams & Thomas, Springfield, Mass.; collected of C. "W. Shaw, Springfield, 



Mass.) 



No guaranty obtained. 



Moisture at 100= C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosiDhoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



5.09 

 16.10 

 none. 



3.51 

 12.59 



4.45 



2.16 



Valuation per two thousand pounds : — 



70.2 i^ounds of reverted phosphoric acid, . 



251.8 ijomids of insoluble phosphoric acid, . 



89.0 jiounds of nitrogen, .... 



$5 27 

 12 59 

 12 46 



$30 32 



Williams, Clark & Co.'s '■^Americus" Pure Bone Meal. 

 (Collected of Benjamin Mercer, Stockbrldge, Mass.) 



Guaranteed composition ; Total phosphoric acid, 18 to 24 

 per cent. ; nitrogen, 3 to 4 per cent, (equivalent to am- 

 monia, 4 to 5 per cent.). 



Moisture at 100° C, 

 Total phosj^horic acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Kitrogen, 

 Insoluble matter, . 



rer cent. 



3.66 

 19.02 

 none. 



6.85 

 12.17 



4.22 

 .50 



Valuation per two thousand pounds : — 



137.0 pounds of reverted phosphoric acid, 

 243.4 pounds of insoluble phosphoric acid, 

 84.4 pounds of nitrogen. 



$10 28 

 12 17 

 11 82 



$34 27 



