The Nordics also swept down through Thrace into Greece and Asia Minor, while other large and important groups entered Asia partly through the Caucasus Mountains, but in greater strength they migrated around the northern and eastern sides of the Caspian-Aral Sea.
That portion of the Nordic race which continued to inhabit south Russia and grazed their flocks of sheep and herds of horses on the grasslands were the Scythians of the Greeks and from these nomad shepherds came the Cimmerians, Persians, Sacæ, Massagetæ and perhaps the leaders of the Kassites, Mitanni and other early Aryan-speaking Nordic invaders of Asia. The descendants of these Nordics are scattered throughout Russia but are now submerged by the later Slavs.
Well marked characters of the Nordic race, which were established in Neolithic times if not earlier, enable us to distinguish it definitely wherever it appears in history and we know that all the blondness in the world is derived from this source. As blondness is easily observed and recorded we are apt to lay too much emphasis on this single character. The brown shades of hair are equally Nordic.
When the Nordics first enter the Mediterranean world their arrival is everywhere marked by a new and higher civilization. In most cases the contact of the vigorous barbarians with the ancient civilizations created a sudden impulse of life and an outburst of culture as soon as the first destruction wrought by the conquest was repaired.
In addition to the long continued selection exercised by severe climatic conditions and the consequent elimination of ineffectives, both of which affects a race, there is another force at work which concerns the individual as well. The energy developed in the north is not lost immediately when transferred to the softer conditions of existence in the Mediterranean and Indian countries. This energy endures for several generations and only dies away slowly as the northern blood becomes diluted and the impulse to strive fades.
The contact of Hellene and Pelasgian caused the blossoming of the ancient civilization of Hellas, just as two thousand years later when the Nordic invaders of Italy had absorbed the science, art and literature of Rome, they produced that splendid century we call the Renaissance.
The chief men of the Cinque Cento and the preceding century were of Nordic blood, largely Gothic and Lombard, which is recognized easily by a close inspection of busts or portraits in northern Italy. Dante, Raphael, Titian, Michael Angelo, Leonardo da Vinci were all of Nordic type, just as in classic times many of the chief men and of the upper classes were Nordic.
Similar expansions of civilization and organization of empire followed the incursion of the Nordic Persians into the land of the round skulled Medes and the introduction of Sanskrit into India by the Nordic Sacæ who conquered that peninsula. These outbursts of progress due to the first contact and mixture of two contrasted races are, however, only transitory and pass with the last lingering trace of Nordic blood.
In India the blood of these Aryan-speaking invaders has been absorbed by the dark Hindu and in the final event only their synthetic speech survives.
The marvellous organization of the Roman state made use of the services of Nordic mercenaries and kept the Western Empire alive for three centuries after the ancient Roman stock had virtually ceased to exist.