COM^IERCIAL FERTILIZERS. 



323 



Per cent- 



Insoluble phosphoric acid, 

 Nitrogen, 

 Potassium oxide. 

 Insoluble matter. 



Valuation per two thousand pounds : — 



74.2 pounds of soluble phosphoric acid, 

 58.6 pounds of reverted phosphoric acid, 

 110.6 pounds of insoluble phosphoric acid, 

 42,2 pounds of nitrogen, 

 32.4 pounds of potassium oxide, 



$27 49 



Bradley's Complete Manure {Corn and Grain). 

 (Collected of Sheldon & Newcomb, Greenfield, Mass ) 



Guaranteed composition : nitrogen, 3.3 to 4 per cent, 

 (equivalent to ammonia, 4 to 5 per cent.) ; available phos- 

 phoric acid, 6 to 8 per cent. ; potassium oxide, 4 to 5 per 

 cent. 



Per cent. 



Moisture at 100° C, ....... 9.05 



Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen (in organic matter) 

 Nitrogen (in nitrates), . 

 Potassium oxide, 

 Insoluble matter, 



Valuation per two thousand pounds : — 



147.4 pounds of soluble phosphoric acid, 

 43.4 pounds of reverted phosphoi'ic acid, 

 55.6 pounds of insoluble phosphoric acid, 

 79.4 pounds of nitrogen (in organic matter), 



3.2 pounds of nitrogen (in nitrates), . 

 80. pounds of potassium oxide, 



$41 01 

 Complete Manure (Corn and Grain). 

 (Collected of H. L. Phelps, Northampton, Mass.) 



Guaranteed composition : Total phosphoric acid, 8 to 10 

 per cent. ; soluble and reverted phosphoric acid (available) , 



