Through the report of Herodotus it is well known that the pyramid of Cheops was built by the numerous lovers of the daughter of this king, who raised this enormous monument in recognition of the innumerable times she had yielded herself to their desires. On record also are the sexual excesses of the Roman ladies at the festival of Saturn, the festival of the Bona Dea, and the festival of Priapus; indeed, many of these women allowed themselves to be debauched in the temples (Ploss and Bartels).

But returning to the present day, both gynecologists and alienists record numerous cases of great pathological increase in the intensity of the sexual impulse in women. According to Lombroso, such continued ardency of sexual desire occurs chiefly in women with an inherited tendency to crime and to prostitution, whose natures exhibit a commingling of lasciviousness with barbarism. He gives examples of such women, one of whom surrendered herself to her husband’s laborers; another had as her lovers all the desperadoes of Texas; a third had intercourse with all the herdsmen of her village; a fourth, though her husband occupied a good social position, led the life of a prostitute; a fifth, a cultured and intelligent woman, entertained a common bricklayer, and wrote to him letters full of shameless declarations of her sexual passion; further he writes of a series of criminals, in whom, indeed, increased sexual desire is a common phenomenon; one of these, a thief, experienced sexual excitement at a mere glance at a good-looking man; a murderess, in whom lascivious feeling induced masturbation whenever she saw a man, and who made experiments in sexual intercourse with dogs; another, who often took to bed with her, in addition to her son, three or four men selected at random from the streets; and many others. Jolly reports the case of a widow, a celebrated lionne of the demi-monde, who kept in her desk, side by side with devotional literature, a number of lascivious books and preparations of cantharides, and entertained quite a number of powerfully-built lovers drawn from the lowest canaille.

In hysterical women the sexual impulse is frequently excessive, and may increase to such a degree as to produce hallucinations of coitus; sometimes, on the other hand, the impulse is extinguished, or psychopathically metamorphosed, passing in a most paradoxical manner from sexual frigidity to lascivious reflections and continuous occupation with sexual affairs; not uncommon in such women are false accusations of indecent assaults of which they assert themselves the victims.

Lombroso gives several examples of the increase of the sexual impulse in hysterical women: “A hysterical girl visited a physician, and said to him: ‘I am still a virgin, take me;’ she submitted him to the utmost extremity of provocation, and asserted afterward that she had been violated. Another hysterical subject, a rich young lady, met a workman in the street, offered herself to him, was accepted, and when she returned home related the affair with laughter. A third sought men from the street in order to find one suffering from syphilis, her object being to infect her own husband with the disease.”

According to the observations of Schüle, young married, hysterical women not infrequently run away with a waiter during the honeymoon journey. This author also points out that in women moral insanity is especially apt to manifest itself during the first years of married life. Many advocate a far-reaching libertinism, and threaten to enter a brothel. In these forms we observe, in addition to ill-temper and malignity, especially obscenity and tribadism.

Such a case, observed by Giraud and quoted by von Krafft-Ebing, is the following: Marianne L., of Bordeaux, during the night, while her master was sleeping soundly under the influence of narcotics she had administered, was in the habit of giving up her master’s children to her lover for his sexual gratification, and made them witnesses of the most immoral scenes. It appeared that L. was hysterical, suffering from hemianæsthesia and convulsive seizures, and that before her illness she had been a sensible and trustworthy individual. After the illness, however, she prostituted herself in the most shameless manner and completely lost her moral sense.

Galen relates of his own mother that she suffered from nymphomania, and that in the attacks she bit her female slaves like a wild animal.

As a negative aspect of the sexual impulse in woman we must regard the absence of the impulse, or anæsthesia sexualis, and also the deficiency of the sensation of pleasure during the act of copulation, or dyspareunia.

Of dyspareunia we shall speak more at length later, in connection with the pathology of copulation. As regards the entire lack of the sexual impulse, however, in women whose genital organs are normally developed and normal in the performance of their functions, and whose cerebral condition is also normal, we must consider such lack an extremely rare condition, if indeed it ever occurs. It is only in cases in which the female genital organs are wanting, wholly or to a considerable extent, or in which there are important cerebral disturbances or states of mental degeneration, that the sexual impulse is wanting.

Normally, in the young, sexually unspoiled girl, the sexual instinct[[34]] slumbers in the cerebral cortex, but becomes active, as sensation, perception, and impulse, as soon as the cerebral centre has been aroused by mental impressions or by physical peripheral stimulation of the genital organs and their environment. Among stimuli of the latter class must be reckoned the menstrual stimulus, set on foot by the developmental processes of puberty. These stimuli arouse in the cerebral cortex sensations and perceptions which, rising to specific sexual feelings, produce an impulse to increase the intensity of these feelings by purposive action; thus is awakened the sexual impulse, the strength of which is extremely variable.