370 



BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : — 



11 6 pounds of soluble phosphoric acid, 

 63.-1 pounds of reverted phosphoric acid, 

 85.8 pounds of insoluble phosphoric acid, . 

 152.8 pounds of nitrogen, .... 



$0 93 

 4 76 

 2 57 



25 98 



$34 24 

 Brightman & Co.'s Fish and Potash. 



(Collected of Pease & Easterbrook, Fall River, Mass.) 



Guaranteed composition : Total phosphoric acid, 5 to 6 

 per cent. ; potassium sulphate, 3 to 5 per cent. ; ammonia, 

 4 to 5 per cent, (equivalent to nitrogen, 3.3 to 4.1 per pent.). 



Mayors Superphosphate. 



(Atlantic Fertilizer Company, Boston ; collected of P. Williams & Co., Taunton, 



Mass.) 



Guaranteed composition : Soluble phosphoric acid, 8 to 11 

 per cent. ; available phosphoric acid, 10| to 11| per cent. ; 

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

 2.5 to 3.5 per cent. ; nitrogen, 2 to 2.i per cent, (equivalent 

 to ammonia, 2.5 to 3.5 per cent.). 



