Minerals and Metals in Ancient India v2.c45.s4.1

v2.c45.s4.1

Eight drugs of *uparasa* group, useful in *pāradakarma* or fixation of mercury, were stated to be: *gandhāśma* or *gandhaka* (sulphur), *gairi* (red ochre), *kāsīsa* (ferrous sulphate), *kāṅkṣī* (alum), *tāla* (orpiment), *śilā* (realgar), *añjana* (collyrium) and *kaṅkuṣṭha* (rhubarb) (RRS, 3.1).