their souls, the heart of the matter is for the most part the agreement or suitableness pointed out here with reference to the being which is to be produced and its perfection, and which is also clearly of much more importance than the harmony of their souls, which often, not long after the marriage, resolves itself into a howling discord. Now, here come in the further relative considerations, which depend upon the fact that every one endeavours to neutralise by means of the other his weaknesses, defects, and deviations from the type, so that they will not perpetuate themselves, or even develop into complete abnormities in the child which is to be produced. The weaker a man is as regards muscular power the more will he seek for strong women; and the woman on her side will do the same. But since now a less degree of muscular power is natural and regular in the woman, women as a rule will give the preference to strong men. Further, the size is an important consideration. Little men have a decided inclination for big women, and _vice versâ_; and indeed in a little man the preference for big women will be so much the more passionate if he himself was begotten by a big father, and only remains little through the influence of his mother; because he has inherited from his father the vascular system and its energy, which was able to supply a large body with blood. If, on the other hand, his father and grandfather were both little, that inclination will make itself less felt. At the foundation of the aversion of a big woman to big men lies the intention of nature to avoid too big a race, if with the strength which _this_ woman could impart to them they would be too weak to live long. If, however, such a woman selects a big husband, perhaps for the sake of being more presentable in society, then, as a rule, her offspring will have to atone for her folly. Further, the consideration as to the complexion is very decided. Blondes prefer dark persons, or brunettes; but the latter seldom prefer the former. The reason is, that fair hair and blue eyes are in themselves a variation from the type, almost an abnormity, analogous to white mice, or at least to grey horses. In no part of the world, not even in the vicinity of the pole, are they indigenous, except in Europe, and are clearly of Scandinavian origin. I may here express my opinion in passing that the white colour of the skin is not natural to man, but that by nature he has a black or brown skin, like our forefathers the Hindus; that consequently a white man has never originally sprung from the womb of nature, and that thus there is no such thing as a white race, much as this is talked of, but every white man is a faded or bleached one. Forced into the strange world, where he only exists like an exotic plant, and like this requires in winter the hothouse, in the course of thousands of years man became white. The gipsies, an Indian race which immigrated only about four