A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t2.41
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t2.41
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v1.c12.t2.41
Take blue vitriol and one-fourth its weight of borax and soak the mixture in the oil expressed from the seeds of *pongamia glabra* for one day only and then place it in a covered crucible and heat in the charcoal fire—by this process an essence is obtained from it of the beautiful appearance of coccinella insect.¹