The patient would become sexually excited to a high degree at the mere sight or touch of a man, et se satiebat congressu imaginali aut stupro manu fricando femora ultro citroque. For a long time attacks of genital erethism were brought on every morning. Once it happened in the physician’s office. Notwithstanding the presence of three male witnesses, she threw herself on a lounge and, in hysterical convulsions, se feminavit several times before their eyes. Brouardel relates the case of a girl of sixteen who would lie in the ditch of a highway and, aperiens muliebria lacessebat præterientes viros ad concarnationem. Nothing could be done to make her desist and she had to be sent to a house of correction. In another case, the daughter of a physician, a friend of Brouardel’s, ran away from her father’s home at the age of sixteen and in fornicem iniit in Paris to appease her sexual desires. Nothing could induce her to return home. This case throws some light upon the etiology of prostitution. Not all prostitutes are driven to their degrading trade by idleness or necessity, as some philanthropists or socialists would like to make us believe. Not a few choose this life to satisfy their nymphomaniac desires. Trélat tells of a young girl, the daughter of a professor who, at the age of fifteen, milites noctu fenestra cubiculi admittebat ad satiandam voluptatem. The best and most careful rearing of girls, suffering from nymphomania, can not save them from downfall. In their wild passion, casting all moral and social considerations aside, they throw themselves into the arms of sin. The more they abandon themselves to the gratification of their lust, the greater is the desire of their morbidly excited nerve-centres for lecherous satisfaction. Every indulgence increases the desire and lessens the capacity, as Horace truly says: “Crescit indulgens sibi durus hydrops.” The woman loses control of her passions, and can not restrain herself from stuprum manu aut concubitus. She becomes absorbed in sexual gratification, as seen in the case reported by Reti: