COIVIMERCIAL FERTILIZERS. 



Valuation per two thousand pounds : — 



191.8 pounds of phosphoric acid (Go.), . 

 383.0 pounds of potassium oxide (5^c.), 



535 



$11 51 

 21 07 



$32 58 



Lister Bro.'s Ground Bone. 

 (Collected of Cyrus Hamlin, Westford, Mass.) 



No guaranty obtained. 



Per cent 



Moisture at 100'' C, 9.74 



Total phosphoric acid, ....... 12.85 



Soluble phosphoric acid, none. 



Reverted phosphoric acid, 4.72 



Insoluble phosphoric acid, 8.13 



Nitrogen, 2.93 



Insoluble matter, 2.63 



Valuation per two thousand pounds : 



94.4 pounds of reverted phosphoric acid, 

 162.6 pounds of insoluble j)hosphoric acid, 

 58.6 pounds of nitrogen, 



$7 08 

 8 13 

 8 79 



$24 00 



Bowker's Dissolved Bonehlack. 

 (Collected of Pearse and Easterbrook, Fall River, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 16 to 

 18 per cent. ; total bone phosphate, 33 to 38 per cent. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Insoluble matter, . 



Per cent. 



17.60 



15.20 



14.75 



.28 



.17 



2.17 



Valuation per two thousand pounds : — 



295.0 pounds of soluble phosphoric acid, 

 5.6 pounds of reverted phosphoric acid, . 

 3.4 poimds of insoluble phosphoric acid, . 



f23 60 

 42 

 10 



$24 12 



