in Persian mythology, is one of the five kinds of fire which is distributed in all creations of Ormuzd, even in the earth, in mountains, and in naphtha springs. It was this fire mainly whose cultus spread over a great part of Asia, and of which rays penetrated to India, Thibet, Mongolia, and Turkey. Baku, with its naphtha springs, seems to have been the central place of devotion for the fire-worshippers.