COMMERCIAL FERTILIZERS. 



309 



Bay State Ammoniated Bone Superphoftphate. 

 (J. A. Tucker, Boston, Mass. ; collected of Robinson & Brooks, Palmer, Mass.) 



Guaranteed composition : Ammonia, 2^ to 3^ per cent, 

 (equivalent to nitrogen, 2 to 2.9 per cent.) ; soluble and re- 

 verted phosphoric acid (available), 8 to 11 percent. ; potas- 

 sium oxide, 2 to 3^- per cent. 



Moisture at 100° C, 

 Total phosphoric acid, 

 Sohiblo phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Potassium oxide, 



Valuation per two thousand pounds : 



150.8 pounds of soluble phosphoric acid, 

 29.6 pounds of reverted phosphoric acid, 

 42.2 pounds of insoluble phosphoric acid, 

 67.8 pounds of nitrogen, 

 64.4 jjounds of potassium oxide, 



$33 94 



Bowkcr's Animal Fertilizer, 

 (Collected of Brock & Son, Boston, Mass.) 



Guaranteed composition : Ammonia, 3 to 4 per cent, 

 (equivalent to nitrogen, 2.5 to 3.3 per cent.) ; soluble phos- 

 phoric acid, 6 to 8 per cent. ; available phosphoric acid, 10 

 to 12 per cent. ; bone phosphate, 20 to 24 per cent. ; muri- 

 ate of potash, 4 to 6 per cent, (equivalent to 2 to 3 per 

 cent, potassium oxide). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen, 

 Insoluble matter. 



Per cent, 

 17.47 

 10.81 

 4.36 

 3.33 

 3.12 

 4.15 

 2.44 

 4.53 



Valuation per two thousand pounds : — 



87.2 pounds of soluble phosphoric acid, 

 66.6 pounds of reverted phosphoric acid, 

 62.4 pounds of insoluble phosphoric acid, 



$S 72 

 6 99 

 2 81 



