A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c11.t18: Test of a Pure Metal
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c11.t18
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Test of a Pure Metal
v1.c11.t18.1
"A pure metal is that which, when melted in a crucible, does not give off sparks nor bubbles, nor spurts, nor emits any sound, nor shows any lines on the surface, but is tranquil like a gem.⁴"
v1.c11.t18.2
(1) The porous crucible is of the nature of a "cupel".
(2) Cf. "Lead compounds impart a pale tint to the non-luminous gas flame." (Roscoe and Schorlemmer.)
(3) The reading in the Mss. seems to be defective.
(4) Or in modern phraseology shows "signs of tranquil fusion."