Thus the white race, when crossed with races most different in characters and habit, have given rise to mixed peoples, which have continued to increase since their appearance. No reason can be given why this movement of increase should stop or even slacken. III. There remains the intercrossing of the White and the Negro. It is with reference to this that some facts have been quoted tending to prove that half-breeds cannot propagate among themselves. Let us examine them rapidly. Etwick and Long, in their _History of Jamaica_, have asserted that Mulattoes cease to be reproductive in that island beyond the third generation. Dr. Yvan has pointed out an analogous fact in Java. Dr. Nott has found that in South Carolina, Mulattoes are endowed with low fertility, that they have a shorter life than other human races, and that they frequently die at an early age. Without going so far, Dr. Simonnot attributes to these half-breeds a sort of ethnological neutrality, “which only assures them an ephemeral duration as soon as they are abandoned to themselves.” Nothing is easier than to oppose contrary facts to the foregoing. I can even invoke the testimony of some of the same authors whom I have just quoted. Nott, after having in a general manner formulated the aphorisms which I have just summed up, admits that they only apply to South Carolina, whilst in Louisiana, Florida, and Alabama, the Mulattoes are robust, fruitful, and energetic. I find that Dr. Yvan himself states that his observations only concern Java, and that he had pointed out the fact as exceptional. On the other hand, Hombron declares that in our colonies “Negresses and Whites show a moderate fertility; Mulatto women and Whites are extremely fertile as well as Mulatto men and women.” “Even in such conditions of life as those of the Gulf of Mexico, the Mulatto,” according to M. Rufz, “is well developed, strong, alert, more adapted than the Negro for industrial application, and very productive.” According to M. Audain, in the Dominican Republic of St. Domingo, “one-third are Negroes, two-thirds Mulattoes, and an insignificant proportion Whites.” For a long time this population has not been fed by any fresh arrivals; its continuance is entirely due to itself. More quotations, I think, are useless. When added to the numbers of M. Martin de Moussey, who makes no exception concerning Mulattoes, they are sufficient to demonstrate the following general fact, viz., that the Mulatto is as energetic and as fruitful as other races, at least in a very great majority of those parts of the globe where this mixed population has been formed.