Pierre Snzanne Augustin Cochin. a French writer, born in Paris, Dec. 12, 1823, died at Versailles, March 15, 1872. He early took part in many philanthropic societies, and in 1850 became deputy to the mayor of the 10th arrondissement of Paris, and in 1853 mayor. Afterward he was a member of the municipal commission of the Seine. He was a strong but unsuccessful candidate in the elections of 1863,1869, 1870, and 1871. In 1871 he was one of the commission of inquiry as to the administration of Paris and the department of the Seine; and he was appointed by Thiers prefect of the department of Seine-et-Oise, but declined, He wrote upon social charity 'and political economy in the Annates de la charite and the Correspondant, of which he was from 1845 a leading editor. His Essai on Pestalozzi gained honorable mention in 1848 from the academy of moral and political sciences, to which he was elected in 1864; and his Abolition de l'esclavage (1861) received a prize of 3,000 francs from the French academy. Other important works are his De la condition des ou-vriersfrancais (1863), Lemonde invisible (1864), and La reforme sociale en France (1805).