History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c30.s1.19

c30.s1.19

Take one part of mercury, sulphur two parts and iron powder three parts, and rub them with the juice of the Indian aloe, and after six hours transfer the mass to a brass vessel and cover it with the leaves of the castor-oil plant. At the end of an hour and a half the mass will become heated It is then buried under a heap of paddy grains and taken out after three days and then powdered very fine, and the contents passed through linen. All the three varieties of iron are thus completely killed Gold and other metals can be killed by this process after being reduced to fine powder like iron. 134-137