COMMERCIAL FERTILIZERS. 



513 



Valuation per two thousand pounds : — 



146.4 pounds of soluble phosphoric acid, 

 32.6 pounds of reverted phosphoric acid, 

 60.2 pounds of insoluble phosphoric acid, 

 64.6 pounds of potassium oxide, . 

 60.8 pounds of niti'ogen. 



130 16 



Quinnipiac Potato Manure. 

 (Collected of D. A. Horton, Northampton, Mass.) 



Guaranteed composition : Available pliosphoric acid, 5 to 

 7 per cent. ; insoluble phosphoric acid, 1 to 3 per cent. ; 

 potassium oxide, 6 to 8 per cent, (equivalent to potassium 

 sulphate, 11 to 15 per cent.) ; nitrogen, 3.25 to 4.25 per 

 cent, (equivalent to ammonia, 4 to 5 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosi^horic acid, 

 Reverted phosphoric acid, 

 Insoluble j^hosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



14.55 

 10.53 

 1.28 

 5.41 

 3.84 

 5.82 

 4.55 

 5.44 



Valuation per two thousand pounds : 



25.6 pounds of soluble phosphoric acid, 

 108.2 poimds of reverted phosphoric acid, 



76.8 pounds of insoluble phosphoric acid, 

 116.4 pounds of potassium oxide, . 



91.0 pounds of nitrogen. 



$34 80 



Quinnipiac Dry Cfround Fish. 

 (Collected of D. A. Horton, Northampton, Mass.) 



Guaranteed composition : Available phosphoric acid, 4 to 

 6 per cent. ; insoluble phosphoric acid, 2 to 4 per cent. ; 

 nitrogen, 7.5 to 10 per cent, (equivalent to ammonia, 9 to 

 12 per cent.). 



