History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s1.8
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s1.8
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c17.s1.8
Digestion of minerals is to be effected in the decoction of *Dolichos biflorus*, *Paspalum scrobioulatum*, the urine of man and the acid juices of (the fruit of) ratan (*Calamus rotang*) and afterwards with the addition of alkalies (soda, borax, etc.). The operation of roasting is to be performed thrice. 5