slowly, these designations are penetrating foreign lands as well. The Ukraine is the land in which the Ukrainian nation dwells—a great solid national territory embracing all the southern part of Russia in Europe, besides East Galicia, Northwest Bukowina and Northeast Hungary. This district is a definite geographic unit. A discussion of its exact boundaries shall be reserved for the anthropogeographical part of this book. A division of Europe into natural regions almost invariably stops at Eastern Europe. While all the other portions of our globe have long been the object of the most detailed classification, Eastern Europe remains, as before, an undivided whole. To be sure, there have been many attempts at classification, but they are all based upon a non-geographical point of view. Only the Baltic provinces and Poland are, in their present political extent, regarded as possible geographic units. These deficiencies in the geographic material relating to Eastern Europe are due, above all, to our imperfect knowledge of this great region. Russian science is devoting far more intensive study to the Asiatic borderlands of the immense empire than to the European home country. For this reason, our literary aids in this direction are few and unreliable. The latter criticism applies even to the twenty-volume Geography of Russia by Semyonoff and the Geography of Krassnoff. Apart from the consideration that it is relatively out of date, the fifth volume of Reclus’ “Géographie universelle” still offers the best insight into this unique region of Eastern Europe. If we glance at the map of Eastern Europe, we perceive at once that the great uniformity of this immense region makes it quite impossible to apply to Eastern Europe as a criterion the division of Western or Central Europe. It is not seas and mountains that separate the natural regions and anthropogeographical units of Eastern Europe, but imperceptible morphological transitions, hydrographic and climatic boundaries, petrologic and floral conditions. The Ukraine is an Eastern European country. Its situation, its decidedly continental character, its geologic history, tectonic construction and morphologic conditions, its climate, plant and animal life, its anthropogeography—all are characteristic of Eastern Europe. But within Eastern Europe the Ukraine occupies a unique position, which fully warrants our conceiving of this great land as a geographic unit standing on an equal basis with the other natural units, as Great Russia, North Russia, the Ural, White Russia, the Baltic Provinces. But it also forms a characteristic transition country from Eastern to Central and Southern Europe on the one side, and to Western Asia on the other. The location of the Ukraine causes us necessarily to consider it as the easternmost of the Mediterranean countries of Europe. The Ukraine differs from these other Mediterranean countries in that it is not hemmed in on the north by mountains. The back-country of the Black Sea, which the Ukraine really is, therefore merges gradually into the lands lying further to the north—Great Russia and White Russia. Of all the regions of Eastern Europe, the Ukraine alone has access to the Mediterranean. The geological history of the Ukraine is entirely different from that of the rest of Europe. The pre-Cambrian core of gneiss-granite of the Ukraine, unlike other parts of Eastern Europe, was not flooded by the sea either in the Cambrian period or the lower Silurian, while in the upper Silurian the sea covered only a slight part of Western Podolia and Northern Bessarabia. The Devonian sea crossed the boundaries of the Ukraine only in the farthest east (Donetz Plateau) and west (Western Podolia). The carbon deposits and Permian formations, so widely distributed in Eastern Europe, are found in the...