 The stone tablets were sealed within the facades.He also tried to introduce a numbering system for houses and buildings, but this failed due to opposition from the aristocracy whose members refused to have the front gate of their imposing mansions "disfigured" by number plaques.During his time in office, he was quite tough on the Jansenists, for which he was attacked virulently by the "Nouvelles ecclésiastiques", an underground newspaper which he could never close down.