History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.33
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.33
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c84.33
17. Copper is red and hard, and, is of three categories : (1) of the best quality, copper is imported from Nepal ( *Bal Yul* ) (2) of the medium quality, copper is as a flower leaf or petal ( '*dab.ma* ) (3) copper of the inferior quality has no glaze but spots.