COMMERCIAL FERTILIZERS. 



393 



Valuation i)er two thousand pounds : — 



48. G 250unds of soluble ])hosphoric acid, 

 239.8 pounds of reverted phosphoric acid, 

 GO. 4 pounds of insoluble phosphoric acid, 

 G7 G pounds of nitrogen, .... 



$35 04 



Stearns & Co.'s Ammoniated Bone Siqnrphospliate. 

 (Collected of Wilson & Holclen, Worcester, Mass.) 



Guaranteed composition : Available phosphoric acid, 8 to 

 11 per cent. ; insolul)le phosphoric acid, 1 to 3 per cent. ; 

 ammonia, 2.75 to 3.5 per cent, (equivalent to nitrogen, 2.3 

 to 2.9 i)er cent. ). 



Per cent. 



Valuation per two thousand pounds : — 



157 4 pounds of soluble phosphoric acid, 

 4G.8 pounds of I'cverted jjhosi^horic acid, 

 52 2 pounds of insoluble jjhosphorie acid, 

 61. G pounds of potassium oxide, . 

 50.6 pounds of niti-ogen, 



$12 59 

 3 51 



1 57 



2 19 

 8 GO 



$28 46 



Jefferd's Fine Ground Bones. 

 (Collected at Experiment Station, Amherst, Mass.) 



Guaranteed composition : Total pliosphoric acid, 27 to 30 

 per cent. ; ammonia, 3 to 4 per cent, (equivalent to nitro- 

 gen, 2.5 to 3.3 per cent.). 



