COMMEECIAL FERTILIZERS. 



367 



Moisture at 100° C, 

 Total phosphoric acid. 

 Soluble phosphoric acid, 

 Reverted phosi^horic acid, 

 Insoluble i)hosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



12.38 

 12.77 

 7.20 

 1.86 

 3.71 

 2.33 

 2.66 

 5.82 



Valuation per two thousand pounds : — 



144. pounds of soluble phosphoric acid, 

 37.2 pounds of reverted phosphoric acid, 

 74.2 pounds of insoluble phosphoric acid, 

 46.6 pounds of potassium oxide, . 

 63.2 pounds of nitrogen, 



$27 56 

 Bay State Fertilizer. 



(Clark's Cove Guano Company, New Bedford, Mass. ; collected of J. R. Atwood, 

 Plymouth, Mass.) 



Guaranteed composition : Total phosphoric acid, 10 to 13 

 per cent. ; soluble phosphoric acid, 6 to 9 per cent. ; re- 

 verted phosphoric acid, 2 to 2| per cent. ; available phos- 

 phoric acid, 8 to 11 per cent. ; potassium oxide, 2 to SI per 

 cent. ; nitrogen, 2.1 to 2.8 per cent, (equivalent to ammo- 

 nia, 2.55 to 3.5 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. 



16.00 

 13.00 

 10.11 

 1.76 

 1.13 

 1.98 

 2.60 

 6.26 



Valuation per two thousand pounds : 



202.2 pounds of soluble phosphoric acid, 

 36.2 pounds of reverted phosphoi-ic acid, 

 22.6 pounds of insoluble phosphoric acid, 

 39.6 pounds of potassium oxide, . 

 50. pounds of nitrogen, 



$16 18 



2 64 



68 



1 68 



8 50 



^29 C8 



