376 BOARD OF AGRICULTURE. 



Bay Slate Bone Superphosphate. 



(Collected of Messrs. J. Clark & Son, Worcester, Mass.) 



Per cent. 



Moisture, 25.39 



Organic and volatile matter, 63.78 



Ash constituents, 36.22 



Total phosphoric acid, 10.89 



Soluble phosphoric acid, 7.22 



Reverted phosphoric acid, 2.75 



Insoluble phosphoric acid, 92 



Nitrogen, . . . 2.14 



Insoluble matter, . . 74 



Valuation per ton of two thousand pounds : — 



144.4 pounds of soluble phosphoric acid, . . . $18 05 

 55.0 pounds of reverted phosphoric acid, . . . 4 95 

 18.4 pounds of insoluble phosphoric acid, . . . 1 10 

 42,8 pounds of nitrogen, 10 27 



$34 37 



Bradley''s Sea Fowl. 



(Messrs. Shelden & Newcomb, Greenfield, Mass.) 



Per cent. 



Moisture at 100° C, 18.25 



Organic and volatile matter, 51.03 



Ash constituents, 48.97 



Total phosphoric acid, 11.46 



Soluble phosphoric acid, 8.03 



Reverted phosphoric acid, 1.75 



Insoluble phosphoric acid, 1.68 



Nitrogen, 3.45 



Potassium oxide, 3.69 



Insoluble matter, 4.80 



Valuation per ton of two thousand pounds : — 



160.6 pounds of soluble phosphoric acid, 

 35.0 pounds of reverted phosphoric acid, 

 33.6 pounds of insoluble phosphoric acid, 

 69.0 pounds of nitrogen, 

 73.8 pounds of potassium oxide, . 



$45 50 



