History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s4.t5.12
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s4.t5.12
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v1.c18.s4.t5.12
It is also mentioned in this context that if pure Mercury is not available then use Hiṅgula (Cinnabar) an important of ore of Mercury for obtaining pure Mercury through Damuru Yantra by extraction method.