A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t4.22
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t4.22
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v1.c12.t4.22
"Take the root of *piper betle* or of the cotton plant (*Gossypium herbaceum*) three years old, and rub it into a paste and enclose the diamond in it and roast it in a covered crucible seven times, when the diamond will be killed."