296 



BOARD OF AGRICULTURJi. 



Valuation per two thousand pounds : 



44.2 pounds of soluble phosphoric acid, 

 42.6 pounds of reverted phosphoric acid, 

 31.6 pounds of insoluble phosphoric acid, 

 51.2 pounds of potassium oxide, 

 98.8 pounds of nitrogen, 



$31 61 

 Miles' Fish and Potash (XX). 



(Collected of D. J. Wright, Northampton Mass.) 



Guaranteed composition : Soluble and reverted phos- 

 phoric acid (available), 5 to 8 per cent. ; potassium oxide, 

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

 nitrogen, 3.30 to 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 : 



97.2 pounds of soluble phosphoric acid, 

 .8 pound of reverted phosphoric acid, 

 96.8 pounds of insoluble phosphoric acid, 

 61. pounds of potassium oxide, 

 68. pounds of nitrogen. 



Per cent. 



19 50 

 9.74 

 4.86 

 .04 

 4.84 

 3.05 

 3.40 

 3.95 



$9 72 



07 



4 36 



2 59 



13 60 



$30 34 



Fish and Potash. 



(Quinnipiac Fertilizer Co., New Haven, Conn; collected of Robinson & Brooks, 



Palmer, Mass.) 



Guaranteed composition : Nitrogen, 3\ to 4^ per cent, 

 (equivalent to ammonia, 4 to 5 per cent. ) ; soluble and re- 

 verted phosphoric acid (available), 3 to 5 per cent.; total 

 phosphoric acid, 5 to 7 per cent. ; potassium oxide, 3 to 

 5 per cent. 



Moisture at 100° C, 

 Nitrogen, . . . . 



Total phosphoric acid, . 

 Soluble phosphoric acid, ) 

 Eeverted phosphoric acid, S 



Per cent. 



26.43 

 4.26 

 7.31 



3.18 



