A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c22.s4.t2.2
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c22.s4.t2.2
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v1.c22.s4.t2.2
As a check upon the above analyses, black scales were procured from a smith's and examined. These were carefully sifted by means of an electromagnet and freed from dust and other foreign impurities. 0·622 g scales was heated in a platinum crucible over a blow-pipe flame and cooled at intervals, till the weight was constant at 0·649g.