202 



BOARD OF AGRICULTURE. 



per cent. ; ammonia, 4 to 6 per cent, (equivalent to nitro- 

 gen, 3^ to 5 per cent.). 



Valuation per two thousand pounds : — 



68 8 pounds of soluble phosphoric acid, 

 30. pounds of reverted phosphoric acid, 

 52.6 pounds of insoluble phosphoric acid, 

 91.8 pounds of potasium oxide, 

 72.6 pounds of nitrogen, .... 



Fish and Potash (No. One). 



$33 73 



(Quinnipiac Fertilizer Co., New London, Ct. ; collected of E. T. Sabin, East 



Amherst, Mass.) 



Guaranteed composition : total phosphoric acid, 5 to 7 per 

 cent. ; soluble and reverted phosphoric acid (available), 3 to 

 5 per cent. ; insoluble phosphoric acid, 2 per cent. ; nitro- 

 gen, 3.25 to 4.25 per cent. ; potassium oxide, 3 to 5 per 

 cent. 



Per cent. 

 Moisture at 100° C. 19.67 



Total phosphoric acid, 

 Soluble phosporic acid. 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Potassium oxide, 

 Nitrogen, . 

 Insoluble matter, 



Valuation per two thousand pounds : — 



10. pounds of soluble phosphoric acid, 

 110. pounds of reverted phosphoi'ic acid, 

 38. pounds of insoluble phosphoric acid, 

 86. pounds of potassium oxide, 

 74.6 pounds of nitrogen. 



7.90 

 .50 

 6.50 

 1.90 

 4 30 

 3.73 

 .93 



$32 28 



