History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c30.s1.17

c30.s1.17

Leaves of *tikshna* iron are repeatedly to be heated and plunged into water and then to be powdered in a stone mortar with an iron pestle * * *. The powder of iron thus obtained is to be roasted twenty times in a covered crucible in combination with mercury and sulphur, and after each roasting the powder of iron is to be pounded as directed above—iron thus reduced to ashes is to be used in medicine. 107-110