Vintage guide for sexual matters with 52 illustrations. Covers love and morality, the evolution of the sexual system, the specialized sexual systems, sex instincts, the varieties of love, defects of the sexual powers, inversions of the sex instincts (homosexuality, transvestism, fetichism, exhibitionism, etc.), abnormalities of the sex instincts (incest, erotomania, etc.), ecuation in sex hygiene, the practice of sexual love in marriage, and the physiology of copulation.
