The mandate of Calès was renewed on 20 Nivose year V (January 9, 1797). He took part soon after to the Coup of 18 Fructidor, Year V (September 4, 1797) led against the royalists who had become the majority in the Council of Five Hundred and the Council of Ancients, and actively contributed to the success of this day. He also made several reports to the Council (which were adopted), on the costume of the representatives, of the secretaries, of the messengers of State and of the ushers of the Legislative Body, on the establishment of health schools in Paris, Angers, Bruxelles and Montpellier (12 Brumaire, Year VI – November 2, 1797), on medical education (29 Germinal, Year VII – April 18, 1798), and on the organization of the Ecole Polytechnique (he requested that only « "young men known for their civic virtue" » should be admitted).