On the death of de l’Épée, Sicard competed for and was unanimously awarded the management of the abbé’s institution. Having already written not a little on the subject of deaf-muteness, he now published other works, “A Deaf-mute’s Course of Instruction,” among others, which only served to increase his renown; though in this treatise there was indeed one highly objectionable assertion concerning the condition of a deaf-mute which the author found it necessary to retract in his “Theory of Signs.” During the Revolution of 1793 the Abbé Sicard did not escape persecution. Flung into prison after the eventful 10th of August, he was lucky enough to keep his head on his shoulders during the massacres of September. He had scarcely been set at liberty when, as editor of the _Catholic Annals_, he was condemned to transportation to Cayenne; and he passed the next two years of his life in flight far from his beloved institution, of which he did not resume the direction till after the Revolution of the 18th “Brumaire.” He died in 1822. Among the professors whom he formed must be mentioned a speech-endowed one named Bébian, who in his turn trained several deaf-mute professors. His works are still consulted with advantage both in France and abroad by those who wish to devote themselves to this arduous method of instruction. The object he kept before him in writing was, as he himself expressed it at the commencement of one of his books, “to simplify the method and render it so easy that the mother of a family can teach her deaf-mute child to read just as she teaches the others to speak.”