Jean-Charles-Pierre Lenoir

The Paris police force was the largest in Europe, with one member for every 545 inhabitants of the city, as well as 340 spies.[10] A stock saying in Paris at the time was that when two people had a conversation, another was listening.[11] Lenoir helped the Foreign Minister, Charles Gravier, comte de Vergennes, monitor the opinion of the public and of his political enemies.[3] (Vergennes was not always a reliable friend, and did not support Lenoir during his later conflict with Breteuil.[12]) The salons of Paris provided a way by which the elite could generally avoid censorship and talk freely, although the police monitored them and could lay charges for distribution of unauthorized publications or subversive talk. Under Lenoir the police set up their own salon.[13] Lenoir claimed that he gained more useful information from this salon than from all his inspectors and other contacts.[14] He wrote that his salonnière,

entertained in her own home, several times a week, courtiers, men of letters, socialites, and these idle persons one sees everywhere and who meddle in everything. She served, on days she entertained, a tea the cost of which the police paid. Her house, where persons of all conditions and of good and bad company gathered, was not regarded as completely open: only a few women attended; there were no games; people spoke there with complete freedom.[13]

Lenoir was head of the Paris police at the same time that Benjamin Franklin arrived in Paris in 1776 to advocate for the cause of American independence. Lenoir gathered information on American correspondence, for example via mail interception, and followed British personnel that were also interested in the American cause. No British diplomat was more closely tracked than the British ambassador, Stormont, whose informants were informed upon to Lenoir.[15]

The Halle aux blés, built under Lenoir's administration

Lenoir considered that Turgot's instructions to maintain security yet "not to meddle with bread" had been contradictory. After returning to office Lenoir instituted a more flexible form of price control to be used only when he felt the market had failed to set reasonable prices.[5] In his view the bakers should be able to profit in good times in exchange for accepting some losses when times were hard. He instituted regular checks on prices and encouraged citizens to complain of excess prices.[16] He was a friend of Charles Alexandre de Calonne, Controller General of Finance, who consulted him on matters related to provisioning the city and its financial administration.[1]

Under Lenoir's administration the halls and markets for provisions were well-run.[1] A free school of bakery was established in 1782 after much discussion between Lenoir and Jacques Necker, the banker and finance minister, in which scientific theory and practice were to be combined. The purpose was to research all aspects of bread manufacture and disseminate the findings throughout France.[17] The Halle aux blés (corn exchange) was completed with a dome on 11 September 1783.[1] The interior of the dome was decorated with medallion portraits of Louis XVI, Lenoir and Philibert Delorme, inventor of the technique used to make the dome.[18][lower-alpha 1]

As well as being responsible for maintaining civil order, Lenoir was concerned with reducing dirt and disease.[20] Public health was considered a police responsibility.[21] Lenoir was chief administrator of the Hôpital Général of Paris, and the driving force behind the "new hospitals" where the aim was to help the patient recover, as opposed to the traditional hospitals of the religious orders where the aim was to save the patient's soul.[22] However, he ensured that the statutes for hospitals included a statement that, "There is to be strict attention to morals, hours of prayer, and divine office; before childbirth all women must take the sacraments."[23] In 1780 Lenoir found a free hospital for children who had been born with venereal disease.[8] Infected women and children were to be treated at the Hôpital de Vaugirard at the expense of the municipal government.[24]

Lenoir subsidized a competition for the best memoir on the treatment of rabies.[25] On 30 June 1777 Lenoir presided over the formal installation of the College of Pharmacy, whose regulations he had prepared.[20] The college had influence beyond Paris, since it could receive masters for provincial towns that did not have an association of apothecaries or college of medicine.[26] Lenoir appointed the first provosts to inspect the places where medicines were compounded.[20] In 1780 Lenoir made the pharmacist Antoine-Alexis Cadet de Vaux the "salubrity inspector" of Paris. Cadet de Vaux used muriatic acids, combustion of smoke, efficient ventilation and other innovative methods to disinfect insanitary workshops and public places.[27]

Portrait of Lenoir engraved by Juste Chevillet after a painting by Jean-Baptiste Greuze

Lenoir ensured that many improvements were made to security, lighting, fire control and public assistance in the city He founded the Mont-de-Piété pawnbroking institution and took measures against begging, gambling and prostitution.[1] Lenoir's appointment resulted in a slackening in the enforcement of restrictions against public entertainment.[28] Lenoir had a more tolerant attitude toward the theaters on the boulevard and at the fairs, since he regarded them as a necessary and comparatively innocuous amusement for the continually increasing working-class population of the capital. In fact, it became a requirement for the entrepreneurs of the boulevard to maintain their fairground operations, otherwise the crowds at the fairs would significantly decrease.[29]

Prostitution was widespread and practiced openly in Paris.[30] In 1778 Lenoir published an Ordonnance that imposed harsher fines on women who solicited and those who rented rooms to prostitutes. It was hoped that the result would be greater registration and control of prostitutes working in licensed brothels. The Ordonnance was not effective and clandestine arrangements continued to be widespread. The police employed spies to discover them.[31] The police made much use of prostitutes in brothels as informants.[10] Mercier's Tableau de Paris describes the squalid conditions and says, "Yes, there are beings lower than these women on ill repute, and these beings are men of the police."[31]

In 1777 Lenoir created the Bureau de la filature (Spinning Office) near the Porte Saint-Denis, in an area where cloth was manufactured. The purpose was "improving the quality of the workers' spun thread, finding outlets for the thread, supervising the choice of workers in order to employ those capable of carrying out other types of work.[32] Lenoir appointed the administrators and chaired their meetings.[8] The bureau was subsidized by the crown. In the winter of 1783–84 Lenoir increased the subsidy.[32] Of the 20,000 Parisians assisted by the government at this time, 7,000–8,000 were women employed by the Bureau. It was described as a charity of the king, but it was also seen as a way to prevent idleness and social disturbances due to extreme poverty.[8] It also let manufacturers bypass the guilds and experiment with new techniques.[33]

After 1737 the only place in Paris where French Protestants could be buried was a wood yard on the river bank beside the Faubourg Saint-Antoine.[34] In 1777 Lenoir accepted a suggestion from the Dutch ambassador and allowed the burial of French Protestants in the courtyard of the cemetery for foreign Protestants.[35] The first public Protestant funeral was held in Paris that year without causing any disturbances.[36]