BONE-MEAL FERTILIZERS. 333 



Ground Bones. 



I. — Fine Bones for Fertilizers. 



(Collected by Messrs. Oscar Foote & Co., BoBton, Mass.) 



Moisture and organic matter, 29.66 



Ash constituents, 70.34 



Phosphoric acid in ash, 20.30 



Nitrogen in animal matter, 1.50 



Valuation per ton of 2,000 pounds, 



406 pounds of phosphoric acid, $24 36 



30 " of nitrogen, 7 50 



$31 86 



The mechanical condition of this substance was quite ad- 

 vantageous for speedy disintegration. Its friable texture and 

 low percentage of nitrogen point towards a thorough render- 

 ing process. A peculiar feature of this bone fertilizer con- 

 sisted in having received an addition of from 10 to 12 per 

 cent, of common salt. The latter substance is used here and 

 there by manufacturers for the purpose of keeping the ground 

 bones from rotting or smelling. Well-dried bones need no 

 such preparation. The article was offered at $35 per ton of 

 2,000 pounds, which is less than the usual retail price of 

 ground bones — in their genuine state. 



t 



n. — BONEMEAL FOR FERTILIZER. 



(Messrs. L. B. Darling & Co., Pawtucket, R. I. The sample was secured at the store 

 of Messrs. J. Breck & Co., Boston.) 



Moisture and organic matter, ..... 40.30 per cent. 



Ash constituents, . 59.70 " 



Phosphoric acid in ash, 25.26 " 



Nitrogen in animal matter, 3.52 " 



■'o* 



Valuation per ton of 2,000 pounds. 



505.20 pounds of phosphoric acid, $30 30 



70.40 " of nitrogen, 17 90 



148 20 



This article was of a good mechanical condition, and its 

 composition of a very fair average quality of moderately 

 rendered bones. 



