COMMERCIAL FERTILIZERS. 309 



Bay State Ammoniated Bone Superphosphate. 

 (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. 



Per cent. 



Moisture at 100° C, 19.78 



Total phosphoric acid, 11.13 



Soluble phosphoric acid, 7.54 



Reverted phosphoric acid, 1.48 



Insoluble phosphoric acid, 2.11 



Nitrogen, 2.89 



Potassium oxide, 3.22 



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 pounds of potassium oxide. 



$15 08 

 2 66 



1 90 

 11 56 



2 74 



$33 94 



Bowkefs Animal Fertilizer. 

 (Collected of Breck & 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). 



Per cent. 



Moisture at 100° C, 17.47 



Total phosphoric acid, 10.81 



Soluble phosphoric acid, 4.36 



Reverted phosphoric acid, 8.33 



Insoluble phosphoric acid, 3.12 



Potassium oxide, 4.15 



Nitrogen, 2.44 



Insoluble matter, 4.53 



Valuation per two thousand pounds ; — 



87.2 pounds of soluble phosphoric acid, . . . $8 72 

 66.6 pounds of reverted phosphoric acid, . . .6 99 

 62.4 pounds of insoluble phosphoric acid, . . . 2 81 



