But when the intermixture of races is effected in nearly equal proportions, or if it be the result, not of one invasion, but of a constant and abundant immigration, the case is altogether different, and the fusion of the ethnological elements gives rise to a hybrid population, in which the number of individuals of a pure race is constantly diminishing, so that at the termination of a few centuries the representatives of the two primitive types become the exceptions. In a long Memoir “On the Ethnology of France,” which I lately read before the Anthropological Society of Paris, I have shown to what extent intermixture may modify the physiognomy of a people. Examining in the first place the records of history on hand, the origin of the populations of our departments, and appreciating as much as possible the proportion of the elements which we find in combination; determining, also, for each region the principal and the accessory stocks, I have been enabled to find in the present French nation, in the midst of the innumerable variations of stature, complexion, hair, eyes, cephalic shapes, etc., which may everywhere be expected in mixed races; I have been able to detect, I repeat, the characters of these different races, and to recognise the more or less marked and dominant impress of the Celts, Kimris, Romans, and Germans. I was even enabled, on the statistics of recruiting, to give to my inquiries, in regard to stature, a rigorous precision. I cannot in this place enter into any details: I am obliged to refer the reader to the Memoir, which is published by the Anthropological Society. In point of fact, it was merely because eminent men have for some years doubted the existence of eugenesic hybridity in mankind, that it became necessary to demonstrate so evident a proposition, that the population of France in at least nineteen-twentieths of our territory, presents in unequal degrees the characters of mixed races. This single example might suffice; but I have no doubt that by examining in a similar manner the historical origin and the actual condition of the peoples of Northern Italy, Southern Germany, Great Britain--not to speak of the United States, where the fusion of blood is probably inexplicable--it might be demonstrated with equal certainty, that these different races have given birth, by their intermixture, to ethnological modifications still recognisable. In all these countries is the instability of anthropological characters in contrast with the fixity which is the mark of pure races; and we might say, without fear of error, that the greater part of Western Europe is inhabited by mixed races.