1891.] 



PUBLIC DOCUMENT — No. 33. 



263 



5. Analyses, etc. — Continued. 



Saltpetre Waste. 



[I. sent on from the American Powder Mills, Acton, Mass.; II. sent on by Cool- 

 idge Bros., South Sudbury, Mass. ; III. sent on by L. B. Smith, Barre, Mass ] 



Refuse from Glue Factory. 



[Sent on by Chas. A. Newhall, Lynn, Mass.] 



Per Cent. 



Moisture at 100° C, 43.06 



Organic and volatile matter, ....... 71.02 



Ash, 28.98 



Phosphoric acid, . 0.217 



Nitrogen, 7.82 



Insoluble matter, 18.65 



