This map shows that the vitality of Scandinavia was far from exhausted after sending for upward of two thousand years tribe after tribe across to the continent and that it was now producing an extraordinarily vigorous type, the Vikings in the west and the equally warlike and energetic Varangians in the east, who migrated back to the motherland of the Nordics and laid the foundations of modern Russia. While all these splendid conquests were in full swing a little known group of tribes was growing and spreading in eastern and southern Germany and in Austria-Hungary and occupying the lands left vacant by the Teutonic nations, which had invaded the Roman Empire. From this centre in the neighborhood of the Carpathians and in Galicia eastward to the head of the Dnieper River, the Wends and Sarmatians expanded in all directions. They were the ancestors of those Alpines who are to-day Slavic-speaking. From this obscure beginning came the bulk of the Russians and the South Slavs. The expansion of the Slavs is one of the most significant features of the Dark Ages and the author has attempted to indicate the centre of expansion of these tribes by green dots and green arrows, radiating in all directions from the solid green area in Europe. To sum up this map, the yellow area has steadily declined everywhere, while in western Europe the green area is now limited to the infertile and backward mountain regions. In eastern Europe, however, this same green Alpine area is showing a marvellous capacity for recovery, as will appear from the map of the races of to-day. The red area is widely spread and occupies the river valleys and the fertile lands and represents everywhere the ruling, military aristocracy more or less thinly scattered over a conquered peasantry of Mediterranean and Alpine blood. One phenomenon of dire import is shown on the map, where, coming from the districts north and east of the Caspian Sea, certain black arrows are seen shooting westward into Europe, reaching in one extreme instance as far as Châlons in France, where Attila nearly succeeded in destroying what remained of western civilization. These arrows mark respectively Huns, Cumans, Avars, Magyars, Bulgars and other Asiatic hordes, probably for the most part of Mongoloid origin and coming originally from central Asia far beyond the range of Aryan speech. These hordes of Mongoloids destroyed the budding culture of Russia, while at a later date kindred tribes under the name of Turks or Tatars flooded the Balkans and the valley of the Danube but these later invasions entered Europe from Asia Minor. [Illustration: PRESENT DISTRIBUTION OF EUROPEAN RACES (generalized scheme) by Madison Grant ] THE PRESENT DISTRIBUTION OF EUROPEAN RACES