History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s4.t4.6

v1.c18.s4.t4.6

1. *Soma Nāthī Tāmra* It is a compound of Copper, Mercury, Sulphur, Orpiment and Realgar and prepared in a *Kupi* (Bottle) through *Balūkā yantra* system of heating. Its dose is 4-6 ratti (500-750 mg). It is a method of preparing *Tamra bhasma* (Copper Sulphide).