LEBLOND, Jean Baptiste, French naturalist, born in Toulongeon, near Autun, France, 2 December, 1747; died in Masille, France, 14 August, 1815. He devoted himself from boyhood to the study of the natural sciences, and was named in 1767 royal commissioner to Guiana to make researches as to Peruvian bark and other objects of natural history. He spent many years in this colony, and was there at the time of the French revolution. After his return to France he resided for some years in Paris, where he read several papers on the natural history of Guiana before the Agricultural society of the Seine and the Academy of medicine. He wrote "Essai sur l'art de l'indigo Her" (Paris, 1791); "Moyen de faire disparaitre les abus et les effets de la mendicitd par l'emigration volontaire a la Guiane francoise"; "Observations sur le cannellier de la Guiane" (Cayenne, 1795' enlarged ed., Paris, 1796); "Memoire sur la culture du cotonnier a la Guiane" (1801); "Voyage aux Antilles et a l'Amerique meridionale" (Paris, 1813); and "Description abregde de la Guiane francoise" (1814; 2d ed., with a notice on the author, 1825).--His son, a native of Guiana, published "Trente annes d'existence de F. F. Leblond, creole de Cayenne, his du celebre medecin naturaliste de ce nora, ancien medecin du roi h la Guiane francoise, par un ami" (Paris, 1834).