fate by marrying indigenous females--what the _Mamelukes have always disdained_. (The wives of the Mamelukes were, like their slaves, imported from Georgia, Mongrelia, etc.) Let it now be explained why well formed men, married to healthy women, cannot naturalise on the borders of the Nile a blood formed at the foot of the Caucasus! We are at the same time reminded that European plants equally refuse to perpetuate their species in that locality.”[22] Despite the precision of this passage, many Mamelukes no doubt took wives and numerous concubines from the indigenous population. It is difficult to believe that it could have been otherwise, and Gliddon had a right to say, that if the offspring of the two races had been prolific, there would inevitably have been produced in Egypt a mixed race. But the fact revealed by Volney, which is perfectly authentic, still maintains its force, namely, that the Mamelukes, by the simple fact of change of country, had lost the power of engendering _with the women of their own race_, a prolific posterity; hence, nothing proves that the sterility of their offspring depended on the influence of hybridity, but rather on the influence of climate. It is not our purpose successively to review all particular intermixtures produced in human races, or to determine the degree of the fecundity of the hybrids resulting from it. To demonstrate that eugenesic hybridity really exists, one instance is sufficient, provided it be conclusive; and to find this example we need not travel beyond our country. The population of France, as we have amply established elsewhere, is descended from several very distinct races, and presents everywhere the character of mixed races. The pure representatives of the primitive races form a very small minority; nevertheless, this hybrid nation, so far from decaying, in accordance with the theory of Mr. Gobineau; far from presenting a decreasing fecundity, according to some other authors, grows every day in intelligence, prosperity, and numbers. Ever since the revolution has broken the last obstacle which opposed themselves to the mixture of races, and despite of the gigantic wars which during twenty-five years mowed down the _élite_ of its male population, France has seen the number of its inhabitants increase by more than one-third; this is not a symptom of decay. Dr. Knox, in his curious essay on the Races of Men (London, 1850), has thought proper to utter, in relation to the French, some hard truths: and also some calumnies, which we shall put to the account of his patriotism. Mr. Knox has accorded to the French nation an increasing physical prosperity, and as this side of the question is the only one which occupies us here, we might dispense with any other testimony. That learned author thought what he said about the French applied exclusively to the Celtic race; he supposed that upon our soil there were nought but pure Celts, and that the other