Farther south the best-known tribes are the Manchus, the Mongols proper, the Moguls and the Turks, all known under the name of Tatars, and to the ancients as Scythians, occupying from east to west the zone of Asia comprised between the 40th and 50th circles of N.
Siberia, north of the 50th parallel, has a climate not much differing from a similarly situated portion of Europe, though the winters are more severe and the summers hotter.
Last is the Altai, near the 50th parallel, rising to 10,000 or 12,000 ft., which separates the waters of the great rivers of western Siberia from those that collect into the lakes of northwest Mongolia, Dzungaria and Kalka.
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Stein was pouring troops through the breach made by the Silesians, and was making good headway with the 50th Austrian division on their right, while the Alpenkorps, Berrer and Scotti had broken through the lines opposite Tolmino, and in several places had gained the high ridge dominating the head of the Judrio valley.
Saga had to be abandoned owing to the break farther S., and the 50th Div., or what was left of it, retired into the Val d'Uccea and on to the ridge of the Stol, which was reached later by the remnants of the 43rd, who had held their own bravely, but were in great part cut off when they attempted to come back across the Isonzo.
The right-hand column, which had cut in behind the Italian 43rd Div., was making the task of the Austrian 50th comparatively easy, and brushing aside the spasmodic opposition of such small detachments as came in its way.