When all these conditions are fulfilled, the applicant receives a pass-book, in which the number of girls she is allowed to keep is specified. In this book she is bound to enter the name of every prostitute she receives, whether as a boarder or a transient lodger; her age, the date of her entry into her house, the date of her inspection by a physician, and the date of her departure from the house. A printed form in the beginning of the pass-book reminds the mistress of the house that she is bound, under heavy penalties, to inscribe on the police rolls every girl she receives within twenty-four hours of her arrival. In the event of the neglect of these rules by the keepers of houses of prostitution, the license is revoked. It is understood that the police enforce this regulation with due rigor. Much has been said and written about the manner in which the keepers of houses of prostitution obtain recruits. M. Parent-Duchatelet, whose sources of information were the best, gives it as his opinion that most of the prostitutes are obtained from the hospitals, especially the Hospital du Midi, where female venereal diseases are treated. It appears that this hospital and others are haunted by old women who have been prostitutes, and who, in their old age, eke out a livelihood by enticing others into the same calling. They soon discover the antecedents and disposition of every young girl they find in hospitals; and if she be pretty or engaging, she must either have much principle or careful friends to rescue her from the clutches of the old hags. While she lies ill on a bed of pain, the latter are constantly with her, and gain her friendship. They know the devices that are needed to impose on her simplicity, and not unfrequently are enabled to strengthen their promises by small donations in money, or a weekly stipend during her convalescence. For a pretty girl as much as fifty francs will be paid by a brothel-keeper. As the girls in France, with few exceptions, come to Paris to be cured when they have contracted disease from association with lovers, it seems quite likely that, as M. Parent-Duchatelet supposes, these hospitals are a fruitful source of prostitutes.