Page:A History of Hindu Chemistry Vol 1.djvu/197

Rh being that, according to Susruta, bitumen is related to six instead of four metals (see below p. 53).

Iron Pyrites are collected on the bank of the river Tāpī, of the lustre of gold and silver respectively (see below under "Rasaratnasamuchchaya", Bk. II, 77-81 and prescribed in the treatments of diabetes, leprosy, &c.

Gold dust, mixed with lotus seed, honey, &c. is used as a tonic.

The Poisons are classified as animal, vegetable and mineral respectively. Under the last we have Phenasma bhasma and orpiment.