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.