But if anything has been proved by the foregoing analyses, it is that race theories are, for the most part, survivals of barbaric pseudo-science; that culture stage and not race (save as regards the need for mixture), conditions and not hereditary character, are the clues to the development of all nations, "race" being a calculable factor only where many thousands of years of given environments have made a conspicuous similarity of type, setting up a disadvantageous homogeneity. It was simply their prior and fuller contact with Greece and Rome, and further their greater mixture of stocks, that civilised the Galli so much earlier than the Germani. On the other hand, the national failure in Spain and Italy of the Teutonic stocks, as such, proves only that idle northern barbarians, imposing themselves as a warrior caste on an industrious southern population, were (1) not good material for industrial development, and (2) were probably at a physiological disadvantage in the new climate. Southerners would doubtless have failed similarly in Scandinavia. I know of no thorough investigation of the amalgamation of the stocks, or the absorption or disappearance of the northern. There is some reason to suppose that early in Rome's career of conquest there began in the capital a substitution of more southerly physiological types--eastern and Spanish--for those of the early Latins. But the Italians at all times seem to have undergone a climatic selection which adapted them to Italy, where the northerners, whether Celt or Teuton, were not so adapted. The supposed divergence of character between northern and southern Italians, insisted on by the former in our own time, certainly cannot be explained by any Teutonic intermixture; for the Teutons were settled in all parts of Italy, and nowhere does the traditional blond type remain. Exactly such differences, it should be remembered, are locally alleged as between Norwegians and Danes, northern and southern Germans, and northern and southern English. If there be any real generic and persistent difference of temperament (there is none in variety of moral bias and mental capacity) or of nervous energy, it is presumably to be traced to climate. Some aspects of the problem are discussed at length in _The Saxon and the Celt_, pt. i, §§ 4, 5. § 2