352 BOiVED OF AGRICULTURE. 



Qround Bones. 



(C. T. Brown, Northampton, Mass.) 



Per cent. 



Moisture, 6.91 



Organic and volatile matter, 49.35 



Asli constituents, 50.65 



Phosphoric acid, 19.40 



Nitrogen, . 3.71 



Insoluble matter, 1.07 



Ground Bones. 



(C. W. Belknap & Son, Tortland, Me.; collected by Rice Brothers, Worcester, Mass.) 



Per cent. 



Moisture 8.23 



Organic and volatile matter, 43.05 



Ash constituents, 56.95 



Phosphoric acid, 18 37 



Nitrogen, 2.71 



Insoluble matter, 1.48 



Baw Ground Bones. 



(E. n. Smith, Northborough, Mass.) 



Per cent. 



Moisture at 100°, 7.91 



Ash constituents, 50.73 



Volatile and organic matter, 49.27 



Phosphoric acid, 21.82 



Nitrogen, 3.68 



Insoluble matter, 1.33 



Ptire Fish Guano. 



(Qninnipiac Company, New Haven, Conn. ; collected of Messrs. Horton & Phelps 

 Northampton, Mass.) 



Per cent. 



Moisture, 37.06 



Organic and volatile matter, 83.13 



Ash constituents, 16.87 



Phosphoric acid, 6.14 



Nitrogen, 5.39 



Insoluble matter, 1.62 



Valuation per ton of two thousand pounds : — 



122.8 pounds of phosphoric acid, $7 37 



107.8 pounds of nitrogen, 25 87 



$33 24 



