A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c34.219

v2.c34.219

The Rasárnava (circa 1200 A. D.) notices the colours of metallic flames, probably after Patañjali; e. g. copper gives blue flame; - tin, pigeon-coloured; lead, pale; iron, tawny; blue vitriol, red. It may be noted that the Rasárnava regards mercury as a penta-Bhautic substance.