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 bj' Cool- 

 idge Bros., South Sudbury, Mass.; III. sent on bj' L. B. Smith, BaiTe, 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 



Phosi)horic acid, 0.217 



Nitrogen .7.82 



Insoluble mattei', , 18.65 



