The crime and vice and constitutional diseases of the mulatto do not prove that degeneracy results from the intermixture of the two races, as was once supposed. On the contrary, as we have already seen, all of these things result from the fact that the crossing of the races takes place under socially abnormal conditions, that is, under conditions of vice. This is not, however, true in all cases and particularly it was not true of all intermixture that took place under the regime of slavery. Rather intermixture under such circumstances approached not vice, as we understand the word, but polygyny. Consequently some of the best blood of the South runs in the veins of some of the mulattoes. Again, we have examples from other countries of the crossing of the two races, negro and white, without physical degeneracy. In the West Indies and in Brazil this crossing is frequently taking place, and many of the best families of those countries have a slight amount of negro blood in their veins. From instances like this, gathered from all over the world, it has generally been concluded by anthropologists that no evil physiological results necessarily follow the intermixture of races, even the most diverse, but that all supposed physiological evils coming from the intermixture of races really come from social rather than from physiological causes. From the point of view of the white race and from the point of view of the negro race such racial intermixture, outside of the bounds of law, may be for many reasons undesirable. But we are here concerned with noting only the social effect of the intermixture that has gone on in the past; and we see that on the one hand it has resulted in creating a class of so-called negroes in whom white blood and the ambitions and energy of the white race predominate, and on the other hand it has also resulted in creating a degenerate mixed stock who furnish the majority of criminals and vicious persons belonging to the so-called negro race.