238 



BOARD OF AGRICULTURE. 



Quinnipiac Phosphate. 

 (Collected of E. T. Sabin, East Amherst, Mass.) 



Guaraiiteecl composition : soluble and reverted phosphoric 

 acid (available), 8 to 10 per cent.; insoluble phosphoric 

 acid, 1 to 3 per cent. ; potassium oxide, 2 to 3 per cent. ; 

 nitrogen, 2.5 to 3.5 per cent. 



Moisture at 100^' C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen, .... 



Valuation per two thousand pounds : — 



97.2 pounds of soluble phosphoric acid, 

 116.4 pounds of reverted phosphoric acid, 

 46.2 pounds of insoluble phosphoric acid, 

 56. pounds of potassium oxide, 

 55.2 pounds of nitrogen. 



Per cent. 

 22.05 

 12.99 

 4.86 

 5.82 

 2.31. 

 2.80 

 2.76 



$10 69 



9 31 



2 77 



2 38 



12 70 



$37 85 



Bradley's XL Ammoniated Superphosphate. 

 (Collected of W. S. Wescott, Amherst, Mass.) 



Guaranteed composition : total phosphoric acid, 9 

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

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

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

 cent. ; nitrogen, 2.5 to 3 per cent. 



Moisture at 1003 C, 

 Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide. 

 Nitrogen, .... 



Valuation per two thousand pounds : — 



168.4 pounds of soluble phosphoric acid, 

 12.6 pounds of reverted phosphoric acid, 

 28. pounds of insoluble phosphoric acid, 

 36.4 pounds of potassium oxide, . 

 57.4 pounds of nitrogen, 



Per 



14 



10, 



8 



1 

 1, 

 2, 



$18 



1 



I 



1 



13 



to 11 

 ; re- 

 phos- 



3 per 



cent. 



.08 



.15 



42 



.63 



.40 



.82 



.87 



52 

 01 

 68 

 55 

 20 



$35 96 



