Moisture at 100° C, 

 Copper oxide, 

 Arsenious oxide, 

 Insoluble matter, 



II02 — IIO5. 



I. Manufactured by Chas. N. Childs & Co., New York City, 



Bought in Worcester, Mass., Feb. 3. 1902. 



II. Manufactured by Leggett & Bro., New York City. Bought in 



Worcester, Mass., Feb. 3, 1902. 



III. Manufactured by A. B. Ansbacher & Co., New York City. 



Bought in Northampton, Mass., Jan. 29, 1902. 



IV. Manufactured by A. B. Ansbacher & Co., New York City. 



Sent on for analysis to Amherst, Mass. 



Per Cent. 

 I. II. III. IV. 



Moisture at 100° C, .78 .39 .86 * 



Chopper oxide, 30-32 28.95 29.94 30.80 



Arsenious oxide, 60.71 60.60 60.04 58.52 



Insoluble matter, .02 .15 .02 * 



*Not determined. 



