One of the longest circuits upon which it has been successfully worked is that between St Petersburg and Omsk, a distance of approximately 2400 miles of iron wire, with three repeating stations.
Those of Nizhniy-Novgorod, with a return of 20 millions sterling, of Irbit and Kharkov, of Menzelinsk in Ufa, and Omsk and Ishim in Siberia, have considerable importance both for trade and for home manufactures.
The most important of the new railways is the Siberian, of which the first section, Chelyabinsk to Omsk, was opened in December 1895, and which, except for a short section round Lake Baikal, in 1901 was completed right through to Stryetensk, on the Shilka, the head of navigation on the Shilka and the Amur, 2710 m.
Surveys in Asiatic Russia are conducted by the topographical departments organized at Orenburg, Tashkent, Omsk, Irkutsk and Tiflis.
And - 90° respectively; the minimum at Krasnoyarsk is - 67° F., at Irkutsk - 51°, at Omsk - 56°, and at Tobolsk - 58°58° F.
The summer isotherm of 68° F., which in Europe passes through Cracow and Kaluga, traverses Omsk, Krasnoyarsk and Irkutsk, whence it turns north to Yakutsk, and then south again to Vladivostok.
Finally, the laws of distribution of animals over Siberia cannot be made out until the changes undergone by its surface during the Glacial and Lacustrine periods are well established and the Post-Tertiary fauna is better known The remarkable finds of Quaternary mammals about Omsk and their importance for the history of the Equidae are merely a slight indication of what may be expected in this field.
From Tyumen the road proceeds to Omsk, Tomsk, Krasnoyarsk and Irkutsk, sending off from Kolyvan a branch south to Barnaul in the Altai and to Turkestan.
Thence the line was continued across the prairies to Kurgan and Omsk, and from there it followed the great Siberian highway to Krasnoyarsk and Irkutsk, and on round Lake Baikal to Chita and Stryetensk on the Shilka.
Pyevtsoff, Sketch of a Journey to Mongolia, &c. (Omsk, 1883); D.
Of Omsk, on a river of the same name, tributary, on the left, of the Irtysh.