330 



BOARD OF AGRICULTURE. 



XVI. 



William Bradley's Patent Superphosphate. 



(Messrs. Parker & Gannett, Boston 



Moisture at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Soluble phosphoric acid . 

 Insoluble phosphoric acid 

 Nitrogen 

 Insoluble matter 



Mass.) 



Per cent. 



3.86 

 44.00 

 56.00 



7.77 

 5.68 

 388 

 6.58 



Valuation per ton of two thousand pounds : 



155.4 pounds of soluble phosphoric acid 

 113.6 pounds of insoluble phosphoric acid 

 77.6 pounds of nitrogen .... 



XVII. 



William Bradley's Sea-Fowl Guano. 



(Albert Montague, Esq 



Moisture at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Soluble phosphoric acid . 

 Insoluble phosphoric acid 

 Nitrogen .... 

 Potassium oxide 

 Insoluble matter . . 



, Sunderland 



Mass ) 



$18 65 



6 82 



15 52 



U0 99 



Per cent. 



11.80 

 55.90 

 44.10 

 8.56 

 3.32 

 3.74 

 1.70 

 5.02 



Valuation per ton of two thousand pounds : — 



171.2 pounds of soluble phosphoric acid . 

 66.4 pounds of insoluble phosphoric acid 

 74.8 pounds of nitrogen .... 



34.0 pounds of potassium oxide . . . 



XVII. 



Stockbridge Manures; Potato. 

 (H. C. Comins, Northampton, Mass.) 



Moisture at 100° C 



Organic and volatile matter . . • 

 Ash constituents 



$20 58 



3 99 



14 96 



1 36 



$40 89 



Per cent. 



14.30 

 62.46 

 37.54 



