Russia | Page 5

easterly winds. The colouring of the Steppe changes as if by magic, and only the silvery plumes of the kovyl (Stipa pennata) wave under the wind, giving the Steppe the aspect of a bright, yellow sea. For days together the traveller sees no other vegetation; even this, however, disappears as he nears the regions recently left dry from the Caspian, where salted clays covered with a few Salsolace?, or mere sands, take the place of the black earth. Here begins the Aral-Caspian desert. The Steppe, however, is not so devoid of trees as at first sight appears. Innumerable clusters of wild cherries, wild apricots, and other deep-rooted shrubs grow in the depressions of the surface, and on the slopes of the ravines, giving the Steppe that charm which manifests itself in popular poetry. Unfortunately, the spread of cultivation is fatal to these oases (they are often called "islands" by the inhabitants); the axe and the plough ruthlessly destroy them. The vegetation of the poimy and zaimischas in the marshy bottoms of the ravines, and in the valleys of streams and rivers, is totally different. The moist soil gives free development to thickets of various willows, bordered with dense walls of worm-wood and needle-bearing Composita, and interspersed with rich but not extensive prairies harbouring a great variety of herbaceous plants; while in the deltas of the Black Sea rivers impenetrable masses of rush shelter a forest fauna. But cultivation rapidly changes the physiognomy of the Steppe. The prairies are superseded by wheat-fields, and flocks of sheep destroy the true steppe-grass (Stipa-pennata), which retires farther east.
The Circum-Mediterranean Region is represented by a narrow strip of land on the south coast of the Crimea, where a climate similar to that of the Mediterranean coast has permitted the development of a flora closely resembling that of the valley of the Arno.
[Illustration: REVEL]
The fauna of European Russia does not very materially differ from that of western Europe. In the forests not many animals which have disappeared from western Europe have held their ground; while in the Urals only a few--now Siberian, but formerly also European--are met with. On the whole, Russia belongs to the same zoo-geographical region as central Europe and northern Asia, the same fauna extending in Siberia as far as the Yenisei and Lena. In south-eastern Russia, however, towards the Caspian, we find a notable admixture of Asiatic species, the deserts of that part of Russia belonging in reality rather to the Aral-Caspian depression than to Europe.
For the zoo-geographer only three separate sub-regions appear on the East-European plains--the tundras, including the Arctic islands, the forest region, especially the coniferous part of it, and the Ante-Steppe and Steppes of the black-earth region. The Ural mountains might be distinguished as a fourth sub-region, while the south-coast of the Crimea and Caucasus, as well as the Caspian deserts, have their own individuality.
As for the adjoining seas, the fauna of the Arctic Ocean off the Norwegian coast corresponds, in its western parts at least, to that of the North Atlantic Gulf Stream. The White Sea and the Arctic Ocean to the east of Svyatoi Nos belong to a separate zoological region connected with, and hardly separable from, that part of the Arctic Ocean which extends along the Siberian coast as far as to about the Lena. The Black Sea, of which the fauna was formerly little known but now appears to be very rich, belongs to the Mediterranean region, slightly modified, while the Caspian partakes of the characteristic fauna inhabiting the lakes and seas of the Aral-Caspian depression.
In the region of the tundras life has to contend with such unfavourable conditions that it cannot be abundant. Still the reindeer frequents it for its lichens, and on the drier slopes of the moraine deposits four species of lemming, hunted by the Canis lagopus, find quarters. Two species of the white partridge, the lark, one Plectrophanes, two or three species of Sylvia, one Phylloscopus, and the Motacilla must be added. Numberless aquatic birds, however, visit it for breeding purposes. Ducks, divers, geese, gulls, all the Russian species of snipes and sandpipers, etc., cover the marshes of the tundras, or the crags of the Lapland coast.
The forest region, and especially its coniferous portion, though it has lost some of its representatives within historic times, is still rich. The reindeer, rapidly disappearing, is now met with only in Olonetz and Vologda; the Cervus pygargus is found everywhere, and reaches Novgorod. The weasel, the fox and the hare are exceedingly common, as also the wolf and the bear in the north; but the glutton, the lynx, and even the elk are rapidly disappearing. The wild boar is confined to the basin of the Dwina, and the Bison eropea to the Bielovyezha forests. The sable has quite disappeared, being found only on the