COMMERCIAL FERTILIZERS. 



547 



Jefferds' Fine Ground Bone. 

 (Collected of J. G. JclTcrds, at works, Worcester, Mass.) 



Guaranteed composition : Total phosphoric acid, 25 to 

 30 per cent. ; ammonia, 3 to 4 per cent, (equivalent to 

 nitrogen, 2.5 to 3.3 per cent.). 



Per cent. 



Moisture at 100^ C, 4.60 



Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 !f\itrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



7.2 pounds of soluble phosphoric acid, 

 150.8 pounds of revei'ted phosi^horic acid, . 

 418.G pounds of insoluble phosphoric acid, . 

 40.2 poimds of nitrogen, .... 



28.83 



.36 



7.54 



20.93 



2.01 



.36 



§0 68 



11 31 



20 93 



6 03 



$38 85 



Soluble Pacific Guano. 

 (Collected of Heart & Akin, New Bedford, Mass.) 



Guaranteed composition : Soluble phosphoric acid, (]\ to 

 8 per cent. ; reverted phosphoric acid, 1.5 to 3 per cent. ; 

 insoluble phosphoric acid, 2 to 4 per cent. ; potassium oxide, 

 2.5 to 3.5 per cent. ; nitrogen, 2 to 3 per cent, (equivalent 

 to ammonia, 2.5 to 3.5 per cent.). 



Ter cent. 



Moisture at 100° C, 

 Total phosphoric acid, . 



Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Niti'ogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



131.8 pounds of soluble phosphoric acid, 

 48.2 pounds of reverted phosphoric acid, 

 62.2 pounds of insoluble phosjihoric acid, 

 36.0 pounds of potassium oxide, . 

 43.2 pounds of nitrogen. 



24.49 

 12.11 

 6.59 

 2.41 

 3.11 

 1.80 

 2.16 

 6.45 



?10 54 

 3 62 

 1 87 

 1 53 

 7 56 



$25 12 



