According to Hammond the neck and mouth of the uterus are supplied with sensibility in its character, like that possessed by the clitoris. On the other hand, Roubaud says that many women have confessed to him that they are perfectly insensible to the titillations of the clitoris, and experience libido only by the touch of the walls of the vaginal entrance. One of the author’s patients experiences a painful sensation by the titillation of the clitoris, while the touch of the vaginal wall induces magnam libidinem. [P] Some women know how to train the sphincter cunni that it becomes as strong as the sphincter ani. This art is especially studied by the Parisian demi-mondaine, and it is said that therein lies a great deal of her much vaunted piquancy. The author had occasion to observe the regular voluntary contractions of the sphincter cunni during the vaginal examination of a young erotic woman of thirty years of age. [Q] Women, says Hagen, in his “Sexuelle Osphresiologie,” are like the flowers who spread their intoxicating fragrance during dawn and dusk—at the first rays of the rising and the last rays of the setting sun. With some the sweetest odors emanate during night-time. Before a thunder storm, when the air is close, the “parfum de la femme” is particularly pronounced. The transpiration of lean women is less pronounced than in the stout, who possess usually large sudoriparous pores and sebaceous glands. Brunettes have a stronger odor feminae than blondes, and both are surpassed by the red-haired. According to Jaeger, the balmy fragrance of the pure, innocent virgin is of an extraordinary purity. As soon as the girl falls in love, the fragrance at once changes. Long sexual continence is claimed by Galopin to increase the transpiratory odor feminae. According to Monin, the woman’s respiration at the time of menstruation has the odor of onions. Before and after conjugation the natural odor corporis of the woman is more intense. Two of the author’s patients were reported to exhale an odor somewhat resembling that of onions, immediately after the orgasm. [R] Roubaud says: Whatsoever the degree of coldness and aversion may be that the woman brings to ad concubitum, the mere presence of the mentula within the vagina will produce in her organs a certain action, which although in the beginning only local, will, if prolonged, change into a libidinous excitation. [S] For the same reasons stuprum cum fornicatricibus to appease the passions is highly deleterious to the man’s health, even if he escapes infection. No man has any real affection for his temporary chance acquaintance of the street. This lack of affection, together with the fear of infection, renders meretricious venery highly unhygienic in the long run. PART V. PSYCHOLOGY OF SEX CHAPTER X THE PSYCHOLOGY OF SEX ATTRACTION