History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c23.8
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c23.8
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- English
c23.8
*Hemakriya* or process for the fabrication of gold :—"I shall now speak of some curiosities of metals, partly from my own experience and partly from the classics on the subject. Calamine, cinnabar, copper pyrites and realgar are to be rubbed with the milky juice of *Euphorbia neriifolia* for seven days together and then to be digested another three days. Melted copper or silver or lead, being alloyed with the aforesaid mixture, acquires the power of converting hundred times its weight of base metals into gold."