A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s8.t1.8
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s8.t1.8
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v2.c32.s8.t1.8
There are 4 kinds of sulphur:—white, black, yellow and red. Cf. Vol. i, p. 90.