DUPIN, ANDRE MARIE JEAN JACQUES 1865), commonly called Dupin the elder, French advocate, presi dent of the chamber of deputies and of the Legislative assembly, was born at Varzy, in Nievre, on Feb. 1, 1783. Entering the cham ber of deputies in 1815, he joined the Liberal opposition. At the election after the second restoration Dupin was not re-elected. He defended with great intrepidity the principal political victims of the reaction, among others, in conjunction with Nicolas Ber ryer, Marshal Ney; and in October 1815 published a tractate entitled Libre Defense des accuses. In 1827 he was again elected a member of the chamber of deputies and in 183o actively sup ported the revolution. At the end of 1832 he became president of the chamber, which office he held successively for eight years. On Louis Philippe's abdication in 1848 Dupin introduced the young count of Paris into the chamber, and proposed him, in vain, as king, with the duchess of Orleans as regent. In 1849 he was president of the committee of the Assembly on legislation. After the coup d'etat of Dec. 2, 1851, he retained his office of procureur general, until effect was given to the decrees confiscating the property of the house of Orleans. In 1857 he was offered his old office by the emperor, and accepted it, explaining his acceptance by the words : "I have always," he said, "belonged to France and never to parties." He died on Nov. 8, 1865. Among Dupin's works, which are numerous, may be mentioned Principia Juris Civilis, 5 vols. (18o6), Memoires et plaidoyers de 18o6 au le'" janvier 1830, in 20 vols., and Memoires ou souvenirs du barreau, in 4 vols. (1855-57). But his greatest work was his share in the codification of the laws of the empire, of which he had sole charge after the interruption of the work of the commission after 1815.
His brother, FRANCOIS PIERRE CHARLES DUPIN (1784—I873), wrote several geometrical works, treating of descriptive geometry after the manner of Monge, and of the theory of curves.