About Tomsk and extend south-west to the Altai Moun- plai n s.
The name Ala-tau also enters into the designation of (6), a range between the upper Yenisei and the upper Ob, in the government of Tomsk, namely, the Kuznetsk Ala-tau, forming an outlier of the Altai Mountains, and reaching 6000-7000 ft.
In this leisurely journey Pallas went by Kasan to the Caspian, spent some time among the Kalmucks, crossed the Urals to Tobolsk, visited the Altai mountains, traced the Irtish to Kolyvan, went on to Tomsk and the Yenisei, crossed Lake Baikal, and extended his journey to the frontiers of China.
Similar Materials for the Altai region, published at St Petersburg by the Cabinet of the emperor, and for Irkutsk and Yeniseisk (12 fasc., Irkutsk, 1889-1893); Materials for Transbaikalia (16 vols., St Petersburg, 1898), summed up in Transbaikalia, by N.
The Russian Altai is composed mainly of mica and chlorite schists and slates, together with beds of limestone, and in the higher horizons Devonian and Carboniferous fossils occur in many places.
The passes across the twin 1 It may however eventually turn out that these ranges, together with the Mechin-ola, farther to the north-east and intimately connected with the Karlyk-tau, belong to the Altai system.
In Altai (Central Siberia) the Archimandrite Macarius, and among the Tatars in south-east Russia with headquarters at Kazan the great linguist Ilminski, did similar work.
Engler's Versuch einer Entwickelungsgeschichte der Pflanzenwelt (Leipzig, 1879-1882), we should have in Siberia (a) the arctic region; (b) the sub-arctic or coniferous region - north Siberian province; (c) the Central-Asian domain - Altai and Daurian mountainous regions; and (d) the east Chinese, intruding into the basin of the Amur.
They are described under different names in Siberia - the Altai Mountains in West Siberia, the Kuznetskiy Ala-tau and the Us and Oya Mountains in West Sayan, the Nizhne-Udinsk taiga or gold-mine district, several chains pierced by the Oka river, the Kitoi Alps in East Sayan, the mountains of the upper Lena and Kirenga, the Olekminsk gold-mine district, and the unnamed mountains which project north-east between the Lena and the Aldan.
Are covered with forests, the Tannu-ola and the Khangai Mountains have woods on their northern faces only, and the Ektagh Altai is quite devoid of woods, even on its northern slope.