Again, let’s thank Octave Uzanne for his insightful book The Modern Parisienne published in 1912 :
If we are to believe the adroit matrons, the distinguished old ladies, the venerable grandmothers who preside over the destinies of certain houses of recreation which are famous in the gayer circles of the capital, which evolve about the boulevards or the elegant quarters near the Arc de Triomphe de l’Étoile, every woman in Paris has her price. These ladies have at their disposal a floating staff which can be mobilised at any moment; they produce albums of photographs faithfully rendering the features, the smiles, and the attitudes of the actress, the fair unknown, or the disguised lady of the middle-class, for benefit of clients who have a well-lined purse. But beside all this, these agreeable and well-bred procuresses, whose gestures are as unctuous as their tongues are smooth, will tell you that—given a little patience—they are ready to bring to the arms of the sighing swain any woman whom he may happen to think particularly desirable.
They have an organization, they declare, which can “bring to reason” any woman in Paris whose fortune does not place her beyond the reach of temptation of certain character. They have, in fact, a troop of female agents or canvassers who have a prodigious address in these matters. They start out on the quest at an early hour and begin visiting the large shops, where they mark down the prettiest saleswomen or the most modest and attractive of the customers who appear to their experienced eyes to possess the necessary qualities. Then they visit and consult with their various accomplices – ladies ’ maids, fortune-tellers, perfumers, and hairdressers. From them their learn all necessary particulars about their intended victims. They dress with great elegance, and in the afternoon they frequent the grands couturiers, scrape acquaintance with the customers, and thus discover all about the jolies madames who are deeply in debt. All this they note down in the register of the exploitable part of Tout Paris. In the evening they go to the theatres, see the fair performers, and find out from their dressers all about the financial crises which oppress these charming creatures.
Once a catastrophe becomes inevitable, they advance to the attack with all the artifices of rhetoric. They promise a golden future if only the lady will be sensible and nice about it and respond, just a little, to the passion of an elegant gentleman who will be waiting on such and such day at such and such hour in a house to be indicated. The deepest secrecy and the most absolute discretion are assured.
Some of the procuresses give parties in their own houses, where “little ladies” assemble in full strength to meet foreigners of fashion, American millionaires, or provincial gentlemen in comfortable circumstances. At such gatherings there are tremendous bouts of baccarat. Roulette and other games are constant features and while the habitués are absorbed in play, the hostess is busy making her introductions in the more secluded part of the rooms, where she regulates the terms of her bargain with the sagacity and seriousness of a notary. She arranges marriages for fixed periods of three, six, or nine months, with power to renew at will, and duly charges her commission on the price. There are numerous agencies in Paris for left-handed unions of this kind, and anything you want can be provided according to the sum you are able to pay.