206 



BOARD OF AGRICULTURE. 



III. — Bone-Fertil:zers. 



Edward A. Smith'' s Crushed Raw Bone. 



(Collected of J. A. Eice, Worcester, Mass.) 



Per cent. 



Moisture at 100° C, 8.28 



Total phosphorlo acid, . . . . . . . 22.82 



Nitrogen, 3.69 



Insoluble matter, .65 



Valuation per two thousand pounds ; 



456.4 pounds of insoluble phosphoric ac'.d, 

 73.8 pounds of nitrogen, 



$27 38- 

 16 97 



$44 35 



Fine Ground Bones. 



(C. A. Bellknap and Son. Portland, Maine ; collected of J. and J. A. Rice, Wor- 

 cester, Mass.) 



Moisture at 100° C, 

 Total phosphoric acid, 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen, 



Valuation per two thousand pounds : - 



140.2 pounds of reverted phosphoric acid, 

 247.2 pounds of insoluble phosphoric acid, 

 69.2 pounds of nitrogen. 



Bradley'^s Fine Ground Bones. 

 (Collected of Breck and Son, Boston, Mass.) 



$11 22 

 14 83 

 13 62 



$39 67 



Per cent. 

 7.17 



Moisture at 100° C, . 



Total phosphoric acid, 23.28 



Nitrogen, 3.95 



Insoluble matter, 1.08 



Valuation per two thousand pounds : — 



465.6 pounds of insoluble phosphoric acid, 

 79. pounds of nitrogen, .... 



. $27 94 

 . 18 17 



$16 11 



