A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t3.5
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t3.5
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v1.c12.t3.5
Melted sulphur is poured into the juice of *verbesina calendulacea* and thus purified.