COMMERCIAL FERTILIZERS. 



319 



Per cent 

 2.04 



.86 

 .90 



Nitrogen (in ammonia salts), . 



Nitrogen (in nitrates), 



Insoluble matter, 



Valuation per two thousand pounds : — 



141.2 pounds of soluble phosphoric acid, 

 46.6 pounds of reverted phosphoi'ic acid, 

 77.4 pounds of insoluble phosphoric acid, . 



135.2 pounds of potassium oxide, . 

 30.6 pounds of nitrogen (in organic matter), 

 40 8 pounds of nitrogen (in ammonia salts), 

 17.2 pounds of nitrogen (in nitrates), . 



$45 74 

 Bay Stale Bone Superphosphate. 

 (J. A. Tucker & Co., Boston, Mass.; collected of Clark & Son, Worcester, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 9.2 pei 

 cent. ; insoluble phosphoric acid, 3 percent. ; nitrogen, 2.71 

 per cent, (equivalent to ammonia, 3.29 per cent.). 



Per cent. 



Moisture at 100° C, 22 28 



Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble ijhosphoric acid, 

 Potassium oxide, 

 Nitrogen, .... 

 Insoluble matter, 



10.30 

 8.51 



.52 

 1.27 

 1.57 

 1.59 



.60 



Valuation per two thousand pounds : — 



170.2 pounds of soluble p!iosphoric acid, 

 10.4 pounds of reverted phosplioric acid, 

 25.4 pounds of insoluble phosphoric acid, 

 31.4 pounds of potassium oxide, . 

 31.8 pounds of nitrogen. 



$26 79 

 Steams' Ammoniated Bone Superphosphate. 

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



Guaranteed composition : Moisture, 12 to 15 per cent. ; 

 ammonia, 3 to 4 per cent, (equivalent to nitrogen, 2.5 to 3.3 

 per cent.) ; soluble phosphoric acid, 8 to 11 per cent. ; in- 



