History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c18.2
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c18.2
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c18.2
1. In order to purify quicksilver one should first mix it with the dust of brick (*so. phag. gyi. phye. ma. dan. sbyr*), and crush it seven times. And in that state it is to be kept in the sun.