description thus: 'En acceptant comme vraies toutes les observations qui tendent a faire admettre qu'il en sera autrement dans les localites dont j'ai parle plus haut, quelle est la conclusion a tirer de faits aussi peu semblables? Evidemment, on est oblige de reconnaitre que le developpement de la race mulatre est favorise, retarde, ou empeche par des circonstances locales; en d'autres termes, qu'il depend des influences exercees par l'ensemble des conditions d'existence, par le MILIEU.' By which I understand him to mean that the mixture of race sometimes brings out a form of character better suited than either parent form to the place and time; that in such cases, by a kind of natural selection, it dominates over both parents, and perhaps supplants both, whereas in other cases the mixed race is not as good then and there as other parent forms, and then it passes away soon and of itself. Early in history the continual mixtures by conquest were just so many experiments in mixing races as are going on in South America now. New races wandered into new districts, and half killed, half mixed with the old races. And the result was doubtless as various and as difficult to account for then as now; sometimes the crossing answered, sometimes it failed. But when the mixture was at its best, it must have excelled both parents in that of which so much has been said; that is, variability, and consequently progressiveness. There is more life in mixed nations. France, for instance, is justly said to be the mean term between the Latin and the German races. A Norman, as you may see by looking at him, is of the north; a Provencal is of the south, of all that there is most southern. You have in France Latin, Celtic, German, compounded in an infinite number of proportions: one as she is in feeling, she is various not only in the past history of her various provinces, but in their present temperaments. Like the Irish element and the Scotch element in the English House of Commons, the variety of French races contributes to the play of the polity; it gives a chance for fitting new things which otherwise there would not be. And early races must have wanted mixing more than modern races. It is said, in answer to the Jewish boast that 'their race still prospers, though it is scattered and breeds in-and-in,' 'You prosper BECAUSE you are so scattered; by acclimatisation in various regions your nation has acquired singular elements of variety; it contains within itself the principle of variability which other nations must seek by intermarriage.' In the beginning of things there was certainly no cosmopolitan race like the Jews; each race was a sort of 'parish race,' narrow in thought and bounded in range, and it wanted mixing accordingly.