Ere long history will have to be rewritten on new lines, so as to take into account these two currents of human life and to appreciate the part played by each of them in evolution. But in the meantime we may avail ourselves of the immense preparatory work recently done towards restoring the leading features of the second current, so much neglected. From the better-known periods of history we may take some illustrations of the life of the masses, in order to indicate the part played by mutual support during those periods; and, in so doing, we may dispense (for the sake of brevity) from going as far back as the Egyptian, or even the Greek and Roman antiquity. For, in fact, the evolution of mankind has not had the character of one unbroken series. Several times civilization came to an end in one given region, with one given race, and began anew elsewhere, among other races. But at each fresh start it began again with the same clan institutions which we have seen among the savages. So that if we take the last start of our own civilization, when it began afresh in the first centuries of our era, among those whom the Romans called the “barbarians,” we shall have the whole scale of evolution, beginning with the gentes and ending in the institutions of our own time. To these illustrations the following pages will be devoted.
Men of science have not yet settled upon the causes which some two thousand years ago drove whole nations from Asia into Europe and resulted in the great migrations of barbarians which put an end to the West Roman Empire. One cause, however, is naturally suggested to the geographer as he contemplates the ruins of populous cities in the deserts of Central Asia, or follows the old beds of rivers now disappeared and the wide outlines of lakes now reduced to the size of mere ponds. It is desiccation: a quite recent desiccation, continued still at a speed which we formerly were not prepared to admit.114 Against it man was powerless. When the inhabitants of Northwest Mongolia and East Turkestan saw that water was abandoning them, they had no course open to them but to move down the broad valleys leading to the lowlands, and to thrust westwards the inhabitants of the plains.115 Stems after stems were thus thrown into Europe, compelling other stems to move and to remove for centuries in succession, westwards and eastwards, in search of new and more or less permanent abodes. Races were mixing with races during those migrations, aborigines with immigrants, Aryans with Ural-Altayans; and it would have been no wonder if the social institutions which had kept them together in their mother countries had been totally wrecked during the stratification of races which took place in Europe and Asia. But they were not wrecked; they simply underwent the modification which was required by the new conditions of life.
The Teutons, the Celts, the Scandinavians, the Slavonians, and others, when they first came in contact with the Romans, were in a transitional state of social organization. The clan unions, based upon a real or supposed common origin, had kept them together for many thousands of years in succession. But these unions could answer their purpose so long only as there were no separate families within the gens or clan itself. However, for causes already mentioned, the separate patriarchal family had slowly but steadily developed within the clans, and in the long run it evidently meant the individual accumulation of wealth and power, and the hereditary transmission of both. The frequent migrations of the barbarians and the ensuing wars only hastened the division of the gentes into separate families, while the dispersing of stems and their mingling with strangers offered singular facilities for the ultimate disintegration of those unions which were based upon kinship. The barbarians thus stood in a position of either seeing their clans dissolved into loose aggregations of families, of which the wealthiest, especially if combining sacerdotal functions or military repute with wealth, would have succeeded in imposing their authority upon the others; or of finding out some new form of organization based upon some new principle.
Many stems had no force to resist disintegration: they broke up and were lost for history. But the more vigorous ones did not disintegrate. They came out of the ordeal with a new organization—the village community—which kept them together for the next fifteen centuries or more. The conception of a common territory, appropriated or protected by common efforts, was elaborated, and it took the place of the vanishing conceptions of common descent. The common gods gradually lost their character of ancestors and were endowed with a local territorial character. They became the gods or saints of a given locality; “the land” was identified with its inhabitants. Territorial unions grew up instead of the consanguine unions of old, and this new organization evidently offered many advantages under the given circumstances. It recognized the independence of the family and even emphasized it, the village community disclaiming all rights of interference in what was going on within