334 



BOARD OF AGRICULTURE. 



XVI. 



Matfield's Spring-Grass Fertilizer 

 (Mr. Or. B. Fogg of Boston, Mass.) 



Total phosphoric acid 

 Soluble " " 



Keverted " " 



Insoluble " " 



Potassium oxide . 

 Niti'ogen 

 Magnesium oxide 

 Moisture at 100° C. 



Per cent. 

 3.77 

 2.24 



1.52 

 4.50 

 4.86 

 1,10 

 8.90 



Valuation per ton of two thousand pounds : — 



44.8 pounds of soluble phosphoric acid . . $5.60 



30.4 " insoluble " " . . 1.83 



97.2 «* nitrogen . . . . . 20.41 



90.0 " potassium oxide .... 6.75 



$34.59 



xvn. 



Buffalo Bone Superphosphate of Mr. L. L. Crocker of Buffalo. 

 (A. Walker, Esq., Williamstown, Mass.) 



Total phosphoric acid 

 Soluble " " 



Eeverted « " 

 Insoluble " " 

 Nitrogen 

 Moisture at 100° C. 



Valuation per ton of two thousand pounds : 



189.4 pounds of soluble phosphoric acid 

 43.8 " reverted " " . 



52.8 " insoluble " " 



67.8 " nitrogen .... 



xvin. 



Stockhridge Fertilizer (Wheaf). 



(Messrs. W. H. Bowker & Co., Boston, Mass.) 



Total phosphoric acid 



Soluble " " 



Reverted " " 



Insoluble « " 

 Nitrogen 



Potassium oxide . 



Moisture at 100° C. 



Per cent. 



14.30 

 9.47 

 2.19 

 2.64 

 3.39 



12.10 



$23.68 



3.94 



3.17 



14.24 



$45.03 



Per cent. 

 5.40 



4.86 



.53 



5.19 



5.67 



20.72 



