History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c35.13
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c35.13
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c35.13
*The Earths:*—Brick, red ochre, saline deposits, ashes, earth from ant-hills—these five kinds of earth are recommended by the experts. 85