A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t9.16
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t9.16
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v1.c12.t9.16
Vālukā *yantram* (sand-bath : a glass flask with a long neck containing mercurials, is wrapped with several folds of cloth smeared with clay and then dried in the sun. The flask is buried up to three-fourths of its length in sand and placed in an earthen pot whilst another pot is inverted over it, the rims of both being luted with clay. Heat is now applied till a straw placed on its top gets burnt. 34-36