Vicariate Apostolic of Dahomey
Father Damien (Joseph de Veuster)
Antoine-Elisabeth Dareste de la Chavanne
Victor Augustin Isidore Dechamps
Feast of the Dedication (Scriptural)
Defender of the Matrimonial Tie
Definitors (in Religious Orders)
Dei gratia Dei et Apostolicæ Sedis gratia
Ferdinand-Victor-Eugène Delacroix
Ambrose Lisle March Phillipps De Lisle
Prefecture Apostolic of the Delta of the Nile
Johann Nepomuk Cosmas Michael Denis
Jacques-René de Brisay Denonville
Heinrich Joseph Dominicus Denzinger
Jean Desmarets de Saint-Sorlin
Deus in Adjutorium Meum Intende
Francisco Garcia Diego y Moreno
Melchior, Baron (Freiherr) von Diepenbrock
Dionysius the Pseudo-Areopagite
Institute of the Divine Compassion
Daughters of the Divine Redeemer
Johann Joseph Ignaz von Döllinger
Emmanuel-Henri-Dieudonné Domenech
Ferdinand-François-Auguste Donnet
Juan Francesco Maria de la Saludad Donoso Cortés
Clemens August von Droste-Vischering
Louis-Guillaume-Valentin Dubourg
Phillippe-Charles-Jean-Baptiste-Tronson Du Coudray
Daniel Greysolon, Sieur Du Lhut
Felix-Antoine-Philibert Dupanloup
Archdiocese of Durango (Durangum)
Known as BARON CHARLES DUPIN.
A French mathematician and economist, b. at Varzy, Nièvre, 6 October, 1784; d. at Paris, 18 January, 1873. At the age of twenty-three he entered the Ecole polytechnique, and after three years of successful studies under the famous Monge, he received the degree of naval engineer. He then served in that capacity in the navy and showed so much ability that he was later appointed inspector-general of the navy. In 1813 he published a pamphlet, "Développement de géométrie pour faire suite à la géométrie pratique de Monge" (Paris, 1813, containing many new and brilliant theories, the most important of which were one relating to the indicatrix of curved surfaces and another on orthogonal surfaces. He was elected to the Academy of Sciences in 1818. The next year Dupin received a professorship at the Conservatoire des arts et metiers; during this period he wrote various pamphlets on scientific topics, such as: "Applications de géométrie et de mécanique à la marine" (Paris, 1822); "Diverses lecons sur l'industrie, le commerce, la marine" (Paris, 1825), and also numerous memoirs for the Academy of Sciences, which were highly spoken of. Notwithstanding his brilliant prospects as a mathematician, he soon preferred to devote himself to political economy. His "Voyages en Grande Bretagne de 1816 a 1819 (6 vols., Paris, 1820-1824), which were the result of a personal inquiry into the commerce and industry of England placed him in the foremost rank of statisticians. In his "Carte de la France eclairee" (Paris, 1824), he was the first to use different colours to show the development of education in various parts of France. Charles X gave him the title of baron in 1824. Dupin gradually turned to politics and for forty years was a member of legislative assemblies. Under the Restoration, in spite of the honour bestowed upon him by the Bourbons, he sided with the Liberals and took his seat at the Left of the Chamber; under the Monarchy of July, he sat with the Centre, and finally with the Right, under the Republic of 1848. He rallied to the Second Empire and was appointed senator by Napoleon III. In his political career he showed himself a man of ability, of great industry and activity, and never failed to assert his Catholic convictions. Although a less brilliant man than his brother the Elder Dupin, he may have a more lasting reputation on account of his discoveries in geometry.
ANONYMOUS, Notice historique sur le baron Charles Dupin (Paris, 1857); Les Mondes (Paris, 1873), XXX, 135; Revue des questions historiques (1881), IX, 517-500.
LOUIS N. DELAMARRE