The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . SIBERIA Baikal in tlie government of Irkutsk, tlie Sea ofAral, and Balkash-Nor or Tenghiz, in the south-west. Numerous other lakes are scattered overthe surface, and more especially in the tundras,where whole chains of them, covering extensivetracts, not unfrequently occur. Geology and Minerals.— Granite and crystal-line schists are found chiefly on the easternslopes of the Ural Mountains, in the south amongthe mountain-ranges of the Altai as
The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . SIBERIA Baikal in tlie government of Irkutsk, tlie Sea ofAral, and Balkash-Nor or Tenghiz, in the south-west. Numerous other lakes are scattered overthe surface, and more especially in the tundras,where whole chains of them, covering extensivetracts, not unfrequently occur. Geology and Minerals.— Granite and crystal-line schists are found chiefly on the easternslopes of the Ural Mountains, in the south amongthe mountain-ranges of the Altai as far north aslat. 57° N., and between Ion. 85° and 120° E.,chiefly in the governments of Tomsk and Irkutsk,on both sides of the Upper Tunguska and eastof the Yenisei; in the upper part of the basinof the Middle Tunguska; and in the very east-ern of the countr>, from Ion. 165°to the shores of Bering Strait. The volcanicrocks belong mostly to the Tertiary period, andare found chiefly in the south, in connectionwith the granite and crystalline schists abovedescribed. They compose the great mass of themountain-range which skirts th
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