COMMERCIAL FERTILIZERS. 



519 



Moisture at 100=" C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



144.G pounds of soluble phosphoric acid, 

 37.0 pounds of reverted phosphoric acid, 

 5.6 jjounds of insoluble phosphoric acid, 

 2.0 poimds of potassium oxide, . 

 72.0 pounds of nitrogen, 



Per cent. 



10.34 

 9.36 

 7.23 

 1.85 

 .28 

 .10 

 3.60 

 1.60 



$27 21 



Randall's Field and Farm. 

 (Collected of W. E. Livingston, Lowell, Mass.) 



Guaranteed composition : Total phosphoric acid, 10 to 11 

 per cent. ; soluble phosphoric acid, 7 to 9 per cent. ; re- 

 verted phosphoric acid, 1 to 2 per cent. ; potassium oxide, 

 2 to 4 per cent. ; ammonia, 2 to 3 per cent, (equivalent to 

 nitrogen, 1.7 to 2.5 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



76.4 pounds of soluble phosphoric acid, 

 39.4 pounds of reverted phosphoric acid, 

 101.8 pounds of insoluble phosphoric acid, 

 54.6 pounds of potassium oxide, . 

 60.6 pounds of nitrogen, . . ' . 



Per cent. 



18.48 

 10.88 

 3.82 

 1.97 

 5.09 

 2.73 

 3.03 

 2.39 



$25 04 



