 His principal work was his "Nouvelle Grammaire Française" in which he collaborated with François-Joseph-Michel Noël.The work was more complete and more logical than the previous standard grammar of Charles François Lhomond; it first appeared in 1823, and by the time of the author's death it had passed through more than forty editions, eighty by 1889.On the proceeds of his early labour, Chapsal was able to retire to the Château de Polangis, near Joinville-le-Pont, where he became a benefactor of the commune and mayor 1843-48, 1850-58.