Most authors (e.g., Bronn, 1848: liii; Bronn, 1853-1856:4; Cuvier, 1828 : 218; Deperet, 1884 : 248; Lydekker, 1898 : 238; Palmer, 1904 : 105, 164; Sherborn, 1922 : xl; Zittel, 1892 : 1) consider Croizet and Jobert as the sole authors of the Recherches. In some bibliographies (e.g., Engelmann, 1846 : 611; Fischer de Waldheim, 1834 : 56) A. Bravard is mentioned as third author. Both these statements are partly correct and partly incorrect, as I (Brongersma, 1937 : 199 note) mentioned already in a paper on fossil hyaenids. Through the courtesy of the Rev. Father L. Zonderland, O.F.M., I have examined a copy of this work with the original wrappers. The copy belonged to the late Dr. J. J. A. Bernsen, O.F.M., and after his death passed into the possession of the Roman Catholic High School at Leiden. I am greatly indebted to Dr. A. Schreuder, Amsterdam, for bringing this copy to my attention. To Dr. H. G. Stehlin, Basle, I am indebted for his courtesy in showing me a paper by Bravard (1828), which contained some information about the Recherches. As the references to this work are mostly incorrect in one way or another, it appeared advisable to me to collect the available information from the literature, and to publish these notes. The copy examined consists of nine parts containing plates and one volume of text; it is complete but for the map (Carte hydrographique du Departement du Puy-de-D6me) issued with part 9. The explanation of the plates contained in parts 1 to 8 is printed on the wrappers of the respective parts. In July 1825 a prospectus was published in which the publication of the Recherches was announced. Ferussac (1825 : 436), who reviewed this prospectus, mentioned the proposed title as : Recherches sur les Corps organises fossiles decouverts dans la montagne de Perrier, pres dTssoire, et dans plusieurs autres gisemens du departement du Puy-de-Dome; par MM. A. Bravard, eleve de l'ecole des mineurs; l'abbe Croizet, membre de la Soc. Acad. de Clermont-Ferrand, et A. Jobert, tresorier de la meme societe. Ouvrage presente a la Societe academique de ClermontFerrand. When the first part was issued the title had been changed into : Recherches sur les Ossemens fossiles du Departement du Puy-de-Dome, Par Auguste Bravard, Eleve de l'Ecole des Mineurs, Membre correspondant de la Societe d'Histoire naturelle de Paris; l'Abbe Croiset, et Jobert aine, Membres de la Societe academique de Clermont-Ferrand. Ouvrage dedie a M. le Baron Cuvier.