COMMERCIAL FERTILIZERS. 



365 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Xitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



162.4 pounds of soluble phosphoric acid, 

 32.-4 pounds of reverted jihosphoric acid, 

 78 4 pounds of insoluble phosijhoric acid, 

 81.2 pounds of potassium oxide, . 

 32.8 poimds of nitrogen, 



$27 82 



BrirjMman & Co.'s Ammoniated Bone Superphosphate. 

 (Collected of Pease & Easterbrook, FaU River, Mass.) 



Guaranteed composition : Total phosphoric acid, 10 to 11 

 per cent. ; soluble phosphoric acid, 8 to 10 per cent. ; po- 

 tassium oxide, 3 to 5 per cent. ; ammonia, 3 to 5 per cent, 

 (equivalent to nitrogen, 2.5 to 4.1 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



21.22 

 8.33 

 5 25 

 1.51 

 1.57 

 2.57 

 2.95 

 8.50 



Valuation per two thousand pounds : — 



106. pounds of soluble j^hosphoi-ic acid, 

 30.2 pounds of revei'ted phosphoric acid, 

 31.4 pounds of insoluble phosphoric acid, . 

 51.4 pounds of potassium oxide, . 

 59. nounds of nitrogen, .... 



$8 40 



2 27 



94 



2 19 



10 03 



$23 83 



Soluble Pacific Guano Company* s Fish & Potash 

 (Collected of H. D. Mantor & Co., Plymouth, Mass.) 

 Guaranteed composition : Total phosphoric acid, 6 to 9 

 per cent.; soluble phosphoric acid, 3 to 5 per cent.; re- 



