Genghis Khan, in the twelfth century, was the next great conqueror and mighty leader of those vast Mongolic hordes which, at various times, have inundated the ancient world, and in their desolating march swept away numerous empires and extinguished whole populations. Genghis Khan, though of predominating Caucasian blood, was mixed with Mongolian, but his successors for several centuries after were mainly Caucasians or the children of Caucasian mothers. Finally, the last and the greatest of these terrible conquerors, Tamerlane, in the sixteenth century, made a conquest of nearly the whole of Asia, penetrating even into Africa and conquering Egypt, while his defeat of Bajazet, the Emperor of the Turks, then at the zenith of their power, opened Europe to the march of his desolating hordes, and could his life have been extended a few years longer, it is quite possible that he would have accomplished what seems to have been the object of Attila, and subjected the European as well as the Asiatic world to his terrible sway. As it was, he invaded and conquered India as well as Egypt, and the master of, or wearer of twenty-eight crowns, he reigned over the whole of Asia to the borders of China, except the Turkish dominions, and even here he was the recognized master though he gave back the empire to the sons of Bajazet. The character of his conquests—the death and desolation that marked his path—was the most terrible as well as the most extensive ever witnessed before or since, and many of the largest and most powerful empires of Asia were as utterly blotted from the earth as if it had opened and swallowed them up. He himself was of pure Caucasian extraction, and doubtless his generals and chiefs were the same, and the Caucasian Tartars formed a very considerable portion of his forces. There was doubtless also a large mixed or mongrel element, for of the throngs of female captives taken in these Mongolian invasions, few ever returned to their homes, but becoming the wives of Mongolian chiefs, those numerous and often powerful dynasties which have ruled over the Asiatic populations had their origin. Nevertheless a vast majority of these almost countless hordes led by Tamerlane were unmixed Mongolian, and, therefore, though the leader was himself a Caucasian or white man, the bloody and desolating character of his conquests were stamped by the cruelty and ferocity of that race. Perhaps no better illustration of the Caucasian and Mongolian character could be presented than the contrast between Alexander’s invasion of Persia and India and similar invasions of Tamerlane. The first, though a “Pagan” several centuries before the Christian era, was humane and merciful to the conquered, and except in battle shed no blood, while the latter not content with the enforcement of the Moslem rule of tribute or death or the religion of the Prophet, slaughtered whole populations after the battle was over, and for the gratification of his ferocious hordes.