History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c25.15
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c25.15
- Language
- English
c25.15
*Extraction of Zinc from Calamine:*—Calamine, enclosed in fourfold pieces of cloth is heated in steam in a vessel for five months Then it is powdered in a mortar and then mixed with treacle, soot, etc. The mixture is then made into balls. These are enclosed in a crucible and strongly heated. The essence possessing the lustre of tin is thereby obtained.