COMMERCIAL FERTILIZERS. 



499 



Valuation per two thousand pounds : — 



60.8 pounds of soluble phosphoric acid, 

 128.6 pounds of reverted phosphoric acid, 



31.2 pounds of insoluble phosphoric acid, 

 155.2 pounds of potassium oxide, . 



75.8 pounds of nitrogen, 



$35 32 



Bradley's XL SuperphospJiate of Lime. 

 (Collected of B. L. Bragg & Co., Springfield, Mass.) 



Guaranteed composition: Total phosphoric acid, 11 to Li 

 per cent. ; soluble phosphoric acid, 7 to 8 per cent. ; re- 

 verted phosphoric acid, 2 to 3 per cent. ; insoluble phos- 

 phoric acid, 2 to 3 per cent. ; potassium oxide (sulphate), 

 2 to 3 per cent. ; nitrogen, 2| to 3| per cent, (equivalent 

 to ammonia, 3 to 4 per cent.). 



Per cent. 



15.89 



12.42 



8.21 



1.97 



2.24 



2.26 



2.85 



1.12 



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 : — 



164.2 pounds of soluble phosphoric acid, 

 39.4 i^ounds of reverted phosphoric acid, 

 44.8 pounds of insoluble phosphoric acid, 

 45.2 pounds of potassium oxide, . 

 67. pounds of nitrogen. 



m 91 



Crocker's Potato, Tobacco and Hop Phosphate. 



(L. L. Crocker's Buffalo Fertilizer Company, Buffalo, N. Y.; collected of E. N, 

 Smith, Sunderland, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 6 to 8 

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

 soluble phosphoric acid, 1 to 2 per cent. ; potassium sul- 

 phate, 6 to 8 per cent. ; ammonia, 2| to 3| per cent, 

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



