History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c28.s1.11
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c28.s1.11
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- English
c28.s1.11
A second variety of it, called *phataki* or *phullika*, is slightly yellow. Another variety, known as *phulla tuvari*, is white and acid in taste ; iron changes to copper by the process of *lepa*. (The author seems to convey the idea that alum plays an important part in this process. *Lepa* is used in the sense of transmutation of the baser metals.)