But even with a strict limitation of Galton's principles and with a wise limitation of his requirements, science has already shown the truth of so many of the first, that the significance of the last, taken as a whole, must be granted. We know that in the inherited tendencies of children, often another form is taken from that which appears in their parents. Of three hundred idiots, one hundred and forty-five had alcoholic parents. Epilepsy, too, is often produced by the same cause. It is known that apparently sound individuals are often attacked at the same age by a disease to which their parents were subject. On the other hand, there are fortunately proofs that individuals endowed with power of will can resist certain dangerous inherited weaknesses. In the discussion on this subject, it should also be justly brought out, that it is possible for the unsound tendency of one parent to be neutralised in the case of children, by the soundness of the other. But this result, as well as the many other questions involved, as I have shown above, are far from being established. The question as to the inheritance of mental diseases has been especially examined by Maudsley. In this case, too, nervous and psychic diseases of the parents often change their character in the children. He requires medical testimony before marriage, and asks that the appearance of mental diseases after marriage shall form a legitimate ground for divorce. And he hopes that a pure descent, in a new sense of the word, will be as important for the marriages of the future, as for aristocratic marriages in early times. One of Maudsley's statements is so interesting that it should be mentioned here. Fathers, he says, who have directed their whole energy towards attainment of wealth, have degenerate children; for this sort of nerve strain undermines the system as infallibly as alcohol or opium. If this statement be true, we would add another point of view to the many already existent, that show how hostile to life is our best social order, which aims at power and gain. It proves how necessary is that transformation of existence which will make work and production serve a new end. Each man should claim to live wholly, broadly, and in a way worthy of humanity. He should be able to leave behind him a posterity provided with all capacities for a similar life. When this day dawns people will regard, as a terrible atavism, that expression on the face of a child, which an artist of the present day has preserved in a picture of a boy represented as a future millionaire.