We have here the application of the principle of sexual selection in its highest sense, although limited in action to women, and it is undoubtedly the phase of stirpiculture which will become operative when the "emancipation of women" is completed. There is one feature of modern society which may retard its operation, and which was referred to by Darwin as interfering with the physical effect of sexual selection in the past. Wealth is now, more than ever before, an important factor in society, and not only man's but woman's choice in matrimony is often governed by money considerations. The possession of wealth may be evidence of mental astuteness, but not necessarily of high morality, and until it ceases to be sought after in marriage it will seriously interfere with the improvement of the race on its higher planes. The sexual selection which Mr. Wallace so ably advocates is to be exercised by woman, and hence its efficiency will depend on the fitness of woman, not only to choose proper partners in marriage, but to communicate the highest physical and mental characters to her offspring. She can transmit only what she herself possesses, and she will choose that which is in sympathy with her own feelings and desires, so that if she is to affect the race beneficially, she must seek first her own perfection. Hence the great importance of the woman's movement of the present day, the basis of which is the better development of her physical, mental and moral faculties, without which she cannot expect to have the increased social privileges to which she may aspire. The greatest social privilege women can have is to be the chief agent in the improvement of the race, and through it the regeneration of society itself. Lady May Jeune, in reply to those who think that the present relations between mothers and daughters threaten family disruption, observes, "That woman was created for the purpose of being the wife and mother of mankind no one can deny, and that none of the discoveries of science or any attempt to solve the mysteries of life have brought her one bit nearer the knowledge of how to unburden herself of these responsibilities, is also a fact." This must be true if the race is to be continued; for without wives there can be no mothers. Being possible mothers, therefore, it is necessary, if the race and society are to be improved, that women shall acquire the highest physical, intellectual and moral education they are capable of, and if they require the same qualities in their husbands, the problem we are considering will be solved.