A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c10.t16.46
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c10.t16.46
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v1.c10.t16.46
"A thin iron plate is to be made red hot and plunged into the decoction of the myrobalans, cow's urine, the solution of 'the salts', the solution of the alkali extracted from the ash of *butea frondosa*; *i.e.* made red hot and plunged into one of the above liquids at a time. When the iron becomes black like collyrium it is to be powdered. * * *"