A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c33.s3.2
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c33.s3.2
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v2.c33.s3.2
(or, as we are wont to call them mines-royal) because the silver will not quit the cost of extracting it ; yet such mines though they pass but for lead mines with the metalist, may appear to be mixt mines to the naturalist, who may meet with divers experiments, wherein the little silver that is in them, may make their lead operate differently from that of those ores, which are wholly destitute of silver."—Edition of 1772, p. 323.