PETROPAULOVSKI, a town of Siberia, in the government of Tobolsk, stands on the Ishim, 160 miles W. of Omsk, on the great post route of Siberia, and on the borders of the country of the Kirghises. A considerable trade is carried on by barter, not only with the other parts of Siberia out with Turkestan and the western part of the Chinese Empire. Petropaulovski, Orenburg, and Troizk are the principal stations by which the commercial intercourse is carried on between Russia and Central Asia. Pop. (1842) 4127.