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of metal in 150 c.c. of solution can be detected without any difficulty As gold and silver are both extracted from quartziferous ores by treatment with potassium cyanide solution according to the MacArthur-Forrest process of gold extraction (this Journal, 1890, 267), this electrolytic method should prove very useful.— Scientific American Supplement, No. 810, July 11, 1891
As gold and silver are both extracted from quartziferous ores by treatment with potassium cyanide solution according to the— Scientific American Supplement, No. 810, July 11, 1891

Century Dictionary (1)
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