LEDRU, Andre Pierre (leh-droo'), French naturalist, born in Chantenay, France, 22 January, 1761; died in Mans, 11 July, 1825. At the beginning of the French revolution he had been ordained to the priesthood, and was one of the first to take the oath prescribed by the civil constitution of the clergy in 1791. When, in 1793, the convention decreed the abolition of all religion, Ledru returned to his family and afterward went to Paris, where he remained until he left his country with the expedition to the Canary and West India islands under Captain Ban-din, to which he had been appointed botanist. On his return in 1798 the government made him the professor of legislation in the central school of La Sarthe, and afterward opened a school for free instruction in physics and natural history in his house, where he had a large library, a fine herbariran, and a botanical garden. His collections are now in the museum of the city of Mans. From 1816 until 1830 he occupied himself in preparing for publication several works, of which the most important are "Memoires sur les ceremonies religieuses et vocabulaire des Guanches," published in "Memoires de l'Academie Celtique" (1809), and "Voyage aux isles de Tenerif, La Trinite, St. Thomas, Ste. Croix, et Porto Rico, execute par l'ordre du gouvernement Frangais, par Andre Pierre Ledru, l'un des naturalistes de l'expedition" (Paris, 1810-'20). A Spanish translation of the part of this book that relates to Porto Rico was made by Julio L. Vizcarrondo (Porto Rico, 1863).