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.
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.
Still, Lake Baikal has a seal (Phoca vitulina, Phoca baikalensis of Dybowski) quite akin to the seals of Spitsbergen, marine sponges, polychaetes, a marine mollusc (ancilodoris), and some marine gammarids.
Even in Lake Baikal Dybowski and Godlewski discovered no fewer than ninety-three species of Gammarides and twenty-five of Gasteropods.
Schistocolor), the beaver, variable hare, wild boar, roebuck, stag, reindeer, elk and Phoca annelata of Lake Baikal - all these are common alike to Europe and to Siberia; while the bear, musk-deer (Moschus moschi- f erus), ermine, sable, pouched marmot or souslik (Spermophilus eversmani), Arvicola obscures and Lagomys hyperboraeus, distributed over Siberia, may be considered as belonging to the arctic fauna.
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.
With the exception of the delta of the Selenga, Lake Baikal is surrounded by lofty mountains.
The fisheries on Lake Baikal supply cheap food (the omul) to the poorer classes of Irkutsk and Transbaikalia.
Of Lake Baikal that it climbs up on to the plateau, from which it descends again before it reaches the Pacific.