CONTENTS OF CHAPTER XXVIII
Sexual hygiene as social hygiene — Its foundation by Darwin — Recent works — “Reproductive hygiene” — Degeneration and regeneration (hereditary taint and hereditary enfranchisement) — Possibility of the disappearance of morbid tendencies — “Eugenics” (Galton) — Love’s choice and sexual selection — Principles — Darwin’s prescriptions regarding sexual selection — Prohibition of marriage — Inheritance of morbid tendencies and morbid constitutions — Danger of alcoholism for the offspring — Families of drinkers — Direct influence of alcohol upon the germ-plasm — Observations on this subject — Syphilis as a cause of racial degeneration — Syphilis and the duration of life — Degenerative effects of tuberculosis — Direct infection — Inheritance of the tubercular habit of body — Mental disorders, diatheses, and malignant tumours — Nervous disorders — Inheritable atrophy of the female mammary glands — Recent works on this subject — Effect of excessive youth or excessive age of the married pair — Influence of blood-relationship — Significance of breeding in-and-in in relation to the evolution of the race — The dangers of too close blood-relationship — Importance of spiritual qualities in relation to love’s choice — The breeding of talent — Importance of this in relation to the woman’s question — In relation to the improvement of the race — Greater resisting powers possessed by women towards degenerative influences — A quotation from Carl Vogt — Unfavourable influence of coercive marriage morality and of mammonism — Importance of racial hygiene and of the sexual sense of responsibility.