Copper in Ancient India c11.s2.5
Copper in Ancient India c11.s2.5
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c11.s2.5
In the Bhāvaprakāsh (16th century) blue vitriol has been designated as a semi-metal (उपधातु) of copper as it is derived from copper. Dr. Ray remarks on this passage that "the nomenclature is in wonderful agreement with that adopted nearly two centuries later by Boerhave (1732 A.D.)."