History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s2.16
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s2.16
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c17.s2.16
"The apparatus known as *koshthi*, mouth blow-pipe, cow-dung, substantial wood (as fuel), a pair of bellows, iron plates, *vidam* (preparation for killing metals ),.. .... having collected all these, chemical operations are to be performed." Ratnagosha said :— "Having prepared with great care 'the powder of projection', which transforms a ten million times its weight of the base metal into gold... ."