a town of Asiatic Russia, Siberia, in the government, and 230 miles E.S.E. of Tobolsk, on the Irtish. It consists of a fortified port on a small hill, and a suburb near the river; and it has several churches, a mosque, and manufactures of leather, hats, and vitriol. Some trade is carried on with Chinese and Independent Turkestan. Pop. 5192.