Frédéric, a celebrated French economist, born at Bayonne on the 29th June 1801. He studied in the colleges of Saint Sever and Sorèze, and then entered the commercial house of his uncle at Bayonne. He was made a justice of the peace in 1831, and some time afterwards a member of the general council of Landes. In 1840 he visited Spain and Portugal, where he paid especial attention to the customs and institutions of those kingdoms. His first literary essay, entitled *De l'influence des tarifs Français et Anglais sur l'avenir des deux peuples*, appeared in the *Journal des Économistes* in 1844, and contains the germs of the economic theory of the author, who afterwards appears as the declared opponent of the system of protection. He visited England soon after; and on his return to Magron, where he resided, he continued his exertions in favour of free trade; as afterwards at Paris also. After the revolution of 1848, he became a member of the legislative assembly; and he died on the 24th December 1850, during a tour in Italy. His writings are as follow:—*Sophismes économiques; Propriété et Loi; Protectionnisme et Communisme; Capital et Rente; Paix et Liberté; Incompatibilités Parlementaires; L'État, mauviet argent; Harmonies économiques.*