HUNDRED DAYS (Fr. Cent Jours ), the name commonly given to the period between the 10th of March 1815, the date on which Napoleon arrived in Paris after his return from Elba, and the 28th of June 1815, the date of the restoration of Louis XVIII. The phrase Cent Jours was first used by the prefect of Paris, the comte de Chabrol, in his speech welcoming the king. See NAPOLEON, and FRANCE: History.