287. FISH WASTE. 



Sent on by seeretary of Hampshire, Frankliu, and Hampden Society. 



Per Cent. 



Moisture at 100° C, 41.92 



Total phosphoric acid, 5.20 



Soluble " " 0.83 



Reverted " " 2.02 



Insoluble " " 2.35 



Nitrogen, 7.60 

 Insoluble matter, .28 



Valuation, per 2,000 lbs. : $34.37. 



288. AMMONITE. 



Sent on by secretary of Hatfield Grange. 



Guaranteed composition : ammonia, 15 to 16 per cent, (equivalent 

 to nitrogen 12.4 to 13.2 per cent.) ; phosphoric acid, 4 to 6 per cent. 



Per Cent. 

 Moisture at 100° C, 5.88 



Total phosphoric acid, 3.43 



Nitrogen (== ammonia 13,76 per cent. — ), 11.33 

 Insoluble matter, 1.38 



Valuation, per 2,000 lbs. : $44.90. 



The article consists, evidently, of fine-ground animal matter, freed 

 from fat. Its general physical character is apparently favorable to 

 a speedy disintegration. The material deserves attention as a source 

 of nitrogen for plant growth. 



289. . ASH OF SPENT TAN BARK. 



Sent on for examination, from North Adams, Mass. 



Per Cent. 

 Moisture at lOO'' C, 

 Calcium oxide, 

 Magnesium oxide. 

 Potassium oxide, 

 Phosphoric acid. 



The article resembles leached wood-ash, as might be expected from 

 the previous treatment of the hemlock bark. 



