This fantastic theory has been defended in a large number of German books, of which the 'Foundations of the Nineteenth Century,' by the renegade Englishman Houston Chamberlain, is the most widely known. The objections to it are numerous. It is notorious that until the invention of gunpowder the settled and civilised peoples of Europe were in frequent danger from bands of hardier mountaineers, forest-dwellers, or pastoral nomads, who generally came from the north. But the formidable fighting powers of these marauders were no proof of intrinsic superiority. In fact, the most successful of these conquerors, if success is measured by the amount of territory overrun and subdued, were not the 'great blond beasts' of Nietzsche, but yellow monsters with black hair, the Huns and Tartars.[9] The causes of Tartar ascendancy had not the remotest connection with any moral or intellectual qualities which we can be expected to admire. Nor can the Nordic race, well endowed by nature as it undoubtedly is, prove such a superiority as this theory claims for it. Some of the largest brains yet measured have been those of Japanese; and the Jews have probably a higher average of ability than the Teutons. Again, the Germans are not descended from a pure Nordic stock. The Northern type can be best studied in Scandinavia, where the people share with the Irish the distinction of being the handsomest race in the world. The German is a mixture of various anatomical types, including, in some parts, distinct traces of Mongolian blood, which indicate that the raiding Huns meddled, according to their custom, with the German women, and bequeathed to a section of the nation the Turanian cheek-bones, as well as certain moral characteristics. Lastly, the German race has never shown much aptitude for governing and assimilating other peoples. The French, by virtue of their greater sympathy, are far more successful.