110 AGRICULTURAL EXPERLMENT STATION. [Jan. 



$21 to $22 per ton of 2,000 pounds. The valuation of these 

 articles depends somewhat on their mechanical condition. 

 They furnish a superior material for the manufacture of 

 superphosphate of lime. 



Dissolved Boneblack. 



[Sent on for examination by Bolton Farmers' and Mechanics' Association, Bolton 



Mass.] 



Per cent. 



10.05 



17.56 



16.84 



.44 



.28 



108 



Moisture at 100° C, 



Total phosphoric acid, 



Soluble 



Reverted '• '■ 



Insoluble " " 



Insoluble matter, . 



Valuation per 2,000 lbs., 



$31 24 



Dissolved Boneblack. 



[Used at Experiment Station, 1885.] 



Moisture at 100° C, 



Total phosphoric acid, 



Soluble 



Reverted " " 



Insoluble " " 



Insoluble matter, . 



Valuation per 2,000 lbs., 



Per cent. 



11.73 

 17.34 

 16.64 

 .44 

 .26 

 11.98 



$o0 86 



Fine Ground Bones. 



[Sent on for examination from Hingham, Mass.] 



