COMMERCIAL FERTILIZERS. 357 



Peruvian Ouano. (Guaranteed.) 



(C. T. Brown, Northampton, Mass.) 



Per cent. 



Moisture, 15.39 



Organic and volatile matter, 45.12 



Asli constituents, 54.88 



Total phosphoric acid, 18.39 



Soluble phosphoric acid, l-9'2 



Reverted phosphoric acid, 6 19 



Insoluble phosphoric acid, 10.28 



Nitrogen, 5-20 



Potassium oxide, 3.71 



Insoluble matter, 3.55 



Valuation per ton of two thousand pounds : — 



38.4 pounds of soluble phosphoric acid, . 

 123.8 pounds of reverted phosphoric acid, 

 205.6 pounds of insoluble phosphoric acid, 

 104.0 pounds of nitrogen, .... 



74.2 pounds of potassium oxide. 



$56 95 



Wool Waste. 



(Sent on for examination from Clinton, Mass.) 



Per cent. 



Moisture, 2.75 



Organic and volatile matter, 36.94 



Ash constituents, 63.06 



Niti'ogen (15 cents per pound), 3.76 



Potassium oxide, 3.48 



Phosphoric acid, Trace. 



Insoluble matter, 42 33 



Valuation per ton of two thousand pounds : — 



75.2 pounds of nitrogen (15 cents per pound),. . $11 28 



69.6 pounds of potassium oxide, 3 48 



$14 76 



The comparatively large percentage of potassium oxide in 

 the raw wool waste imparts an additional manurial value 

 to it. 



Ammonium Sulphate, 



(Collected of C. T. Brown, Northampton, Mass.) 



Per cent. 



Ammonia, 24.70 



