132 



Experiment Station Heport. 



leather refuse which has been treated with lime, no valuation 

 is stated, as it must be valued by testing in the field. 



Ground Horn. 



[Of Perkins & Bradstreet, Danvers, Mass. Sent on for examination ky J. J. H. 

 Gregory, Marblehead, Mass.] 



Moisture at 100° C, 10.00 



Organic and volatile matter, 95.00 



Ash, 5 00 



Phosphoric acid, 1.36 



Nitrogen in organic matter, 13.53 



Valuation per 2,000 Pounds. 

 270.6 lbs. nitrogen at 10 cents, . . . . 

 27.2 lbs. phosphoric acid at 4J cents, . 



$27 06 

 1 22 



$28 28 



The inferior mechanical condition of the article advises the 

 low valuation of the nitrogen present. 



Bonehlack. 



[I. Collected of B. F. Bridges, South Deerfleld, Mass.] 



Boneblack refuse, in a fine ground condition may be pro- 

 fitably used for composting. 



Ground South Carolina Phosphate. 



[Sent on by the Ashby Farmers' Club, Ashby, Mass.] 



Per cent. 



Moisture at 100° C, 1.90 



Total phosphoric acid, 27.13 



Insoluble matter, 11.90 



Valuation per 2,000 lbs., $12 21 



