COMMERCIAL FERTILIZERS. 



551 



Valuation per two thousand pounds : 



7.4 pounds of soluble jjliosphoric acid, 

 114.2 pounds of reverted phosphoric acid, 

 180.2 pounds of insoluble phosphoric acid, 

 107.2 pounds of potassium oxide, . 

 110.6 pounds of nitrogen, . . 



$38 49 



Crocker's Ammoniated Bone Superphosphate. 

 (Collected of C. "VV, Sears, Worcester, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 6 to 8 

 per cent. ; reverted phosphoric acid, 2 to 4 per cent. ; in- 

 soluble phosphoric acid, 1 to 2 per cent. ; potassium sul- 

 phate, 1 to 3 per cent. ; ammonia, 3.5 to 4.5 per cent, 

 (equivalent to nitrogen, 2.9 to 3.7 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



167.4 pounds of soluble phosphoric acid, 

 44.G pounds of reverted phosphoric acid, 

 27.8 pounds of insoluble phosphoric acid, 

 27.8 pounds of potassium oxide, . 

 68.3 j)Ounds of nitrogen, 



Per cent. 



11.66 

 11.99 

 8.37 

 2.23 

 1.39 

 1.39 

 3.43 

 4.70 



fl3 99 



3 35 



83 



1 53 



12 01 



f31 11 



C. A. GOESSMANN, 



State Inspector. 



