During the winter the smaller tributaries freeze to the bottom, and about 1st January Lake Baikal becomes covered with a solid crust of ice capable of bearing files of loaded sledges.
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.
On arrival at the supreme Mongol court - either that on the Imyl river (near Lake Ala-kul and the present Russo-Chinese frontier in the Altai), or more probably at or near Karakorum itself, south-west of Lake Baikal - Andrew found Kuyuk Khan dead, poisoned, as the envoy supposed, by Batu's agents.
Of Lake Baikal that it climbs up on to the plateau, from which it descends again before it reaches the Pacific.
The little Lake Frolikha, situated close to the northern extremity of Lake Baikal and communicating with it by means of a river of the same name, contains a peculiar species of trout, Salmo erythreas, which is not known elsewhere.
Even in Lake Baikal Dybowski and Godlewski discovered no fewer than ninety-three species of Gammarides and twenty-five of Gasteropods.
M.1 The lakes of Asia are innumerable, and vary in size from an inland sea (such as Lakes Baikal and Balkash) to a highland loch, or the indefinitely extended swamps of Persia.
LENA, a river of Siberia, rising in the Baikal Mountains, on the W.
From Lake Baikal the road proceeds to Verkhne-udinsk, Chita and Stryetensk on the Shilka, whence steamers ply to the mouth of the Amur and up the Usuri and Sungacha to Lake Khangka.
The fauna, explored by Dybowski and Godlewski, and in 1900-2 by Korotnev, is much richer than it was supposed to be, and has quite an original character; but hypotheses as to a direct communication having existed between Lake Baikal and the Arctic Ocean during the Post-Tertiary or Tertiary ages are not proved.