COMMERCIAL FERTILIZERS. 



345 



Valuation per two thousand pounds : 



128.6 pounds of soluble phosphoric acid, 



26.6 poimds of reverted jihosphoric acid, 



36.8 pounds of insoluble phosphoric acid, 

 158.8 pounds of potassium oxide, . 



84.6 pounds of nitrogen, 



$36 50 

 Chittenden's Universal Phosphate. 



(National Fertilizer Company, Bridgeport, Conn.; collected of Slate & DeWolf, 

 Greenfield, Mass.) 



Guaranteed composition : Total phosphoric acid, 10 to 12 

 per cent. ; soluble and reverted phosphoric acid, 8 to 10 per 

 cent. ; potassium oxide, 2 to 4 per cent. ; ammonia, 2.5 to 

 3.5 per cent, (equivalent to nitrogen, 2 to 2.9 per cent.). 



Moisture at 100" C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



13.06 

 11.75 

 5.57 

 3.36 

 2 82 

 2.52 

 4.13 

 1.36 



Valuation per two thousand pounds : — 



111.4 pounds of soluble phosphoric acid, 

 67.2 poimds of reverted phosphoric acid, 

 56.4 pounds of insoluble phosphoric acid, 

 50.4 pounds of potassium oxide, . 

 82 6 pounds of nitrogen, 



$31 82 

 Crocker's Ammoniated Bone Superphosphate. 

 (Collected of Slate & DeWolf, Greenfield, Mass.) 

 Guaranteed composition: Soluble phosphoric acid, G to 8 

 per cent. ; reverted phosphoric acid, 2 to 4 per cent. ; in- 



