3.54 



BOARD OF AGRICULTURE. 



Reverted phosphoric acid, 

 Insohible phosphoric acid, 

 Nitrogen, .... 

 Insoluble matter. 



Per cent. 

 3.25 



8.79 

 6.57 

 0.77 



Florida Marl. 

 (Sent from Boston, Mass.) 



Sponge Refuse. 

 (Sent from Albany, N.Y.) 



Moisture, at 100" C, 

 Nitrogen, . 

 Ferric oxide, . 

 Calcium oxide, 

 Magnesium oxide, 

 Phosphoric acid. 

 Insoluble matter. 



Per cent. 

 7.25 

 2.43 

 0.17 

 3.94 

 127 

 3.19 

 39.05 



Bones. 

 (Pure Dissolved Raw Bones. Sent from Amherst, Mass.) 



Moisture, at 100° C, 

 Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Nitrogen, .... 



Valuation per two thousand pounds, $40.67. 



Per cent. 

 10.23 

 16.03 

 7.76 

 3.83 

 4.44 

 2.64 



Fme Orou7icl Raw Bone. 

 (Sent on from "Worcester, Mass.) 



Moisture, at lOO'^ C, 



Total phosphoric acid, 



Nitrogen, 



Valuation per two thousand pounds, $43.86. 



Per cent. 



4.63 



22.41 



3.69 



