Anthropologist and chevalier of the Legion of Honor; Marquis de Nadaillac. Born in 1817 at Rougemont, Cloyes, France; died there in 1904. He was prefect of Basses-Pyrenees and Indre-et-Loire, but later devoted himself to paleontology and anthropology, and became an authority on cave drawings. His best-known works are Prehistoric America, The First Population of Europe, and The Decline of the Birthrate in France.