Although, as we have already seen, previous to the thirteenth century many of the corporations of artisans had been authorised by several of the kings of France to make special laws whereby they might govern themselves, it was really only from the reign of St. Louis that the first general measures of administration and police relating to these communities can be dated. The King appointed Etienne Boileau, a rich bourgeois, provost of the capital in 1261, to set to work to establish order, wise administration, and "good faith" in the commerce of Paris. To this end he ascertained from the verbal testimony of the senior members of each corporation the customs and usages of the various crafts, which for the most part up to that time had not been committed to writing. He arranged and probably amended them in many ways, and thus composed the famous "Book of Trades," which, as M. Depping, the able editor of this valuable compilation, first published in 1837, says, "has the advantage of being to a great extent the genuine production of the corporations themselves, and not a list of rules established and framed by the municipal or judicial authorities." From that time corporations gradually introduced themselves into the order of society. The royal decrees in their favour were multiplied, and the regulations with regard to mechanical trades daily improved, not only in Paris and in the provinces, and also abroad, both in the south and in the north of Europe, especially in Italy, Germany, England, and the Low Countries (Figs. 205 to 213). Etienne Boileau's "Book of Trades" contained the rules of one hundred different trade associations. It must be observed, however, that several of the most important trades, such as the butchers, tanners, glaziers, &c., were omitted, either because they neglected to be registered at the Châtelet, where the inquiry superintended by Boileau was made, or because some private interest induced them to keep aloof from this registration, which probably imposed some sort of fine and a tax upon them. In the following century the number of trade associations considerably increased, and wonderfully so during the reigns of the last of the Valois and the first of the Bourbons. The historian of the antiquities of Paris, Henry Sauval, enumerated no fewer than fifteen hundred and fifty-one trade associations in the capital alone in the middle of the seventeenth century. It must be remarked, however, that the societies of artisans were much subdivided owing to the simple fact that each craft could only practise its own special work. Thus, in Boileau's book, we find four different corporations of _patenôtriers_, or makers of chaplets, six of hatters, six of weavers, &c.