title: Yves Delage (1854-1920) and the ideology behind his research on fécondation.
authors.affiliation: Centre Alexandre Koyré, Muséum National d'Histoire Naturelle, Pavillon Chevreuil, 57, Rue Cuvier, F-75231, Paris Cedex 05, France.
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Fischer