The Neolithic culture, which we have treated of in reference to Europe only, is seen to have been of Turanian origin. From its Asiatic home it spread over the entire world—to the islands of the Pacific, and even America. The road that leads from barbarism to civilization is long and difficult, and it is not strange that but one or two families of men were able to attain that end by their own unaided effort.47 The Turanian Family, which probably advanced man from savagism into barbarism, seems to have at that stage exhausted its energies. This is but an illustration of the fact that a race, like an individual, has a period of growth, a maturity of healthful powers, and an old age of slow decadence. After thus dispersing over the world, carrying with them the culture of the Neolithic Age, they seem to have halted in their progress. It remained for a new people, starting, perhaps, from the same state of culture, but with new energies, to discover and employ metals in the construction of tools and implements. This gave them so great a command over nature that civilization became possible. But whatever considerable advance the Turanian races were able to make beyond the Neolithic culture was by reason of intercourse with these later people. Where completely isolated from them, as in the New World, they remained, for the most part, in the Neolithic culture.48 We have hitherto spoken as if there was but one race in Europe during Neolithic times. In the main this is true; yet, near the close of this time, a different race arrived in Europe. That this is so, is proved by the same line of evidence used to determine the Neolithic people. We shall have much to say of them hereafter. They were the vanguard of the great Aryan race. This calls for some explanation. It has been found that the principal languages of Europe and South-western Asia have certain common characteristics; so much so that we are justified, even compelled, to assume that the nations speaking these languages, such for instance as the Teutonic, Sclavic, Italic, Greek, Persian, Hindoostanee, and others, are descendants from a common ancestor. These people are called, collectively, Aryans. They were the ones who drove the Turanians out of the fairest portions of Europe. Though they appeared at a late date, they have filled the most important places in history, and the civilization of the world to-day is Aryan.