From 1891 to 1903 he served as director of the French School at Athens, during which time, he was in charge of an important excavation at
Delphi.[3] From 1904 to 1911 he was director of national museums (
Louvre), but was forced to relinquish this position due to the theft of the
Mona Lisa in August 1911. After a brief stay at Athens, he returned to Paris, where from 1913 to 1923, he was director of the Bibliothèque nationale de France (National Library of France).[2]
"Comptes des hiéropes d'Apollon Délien", Bulletin de correspondance hellénique, 6 (1882), p. 1-167.
"Les Romains à Délos", Bulletin de correspondance hellénique 8 (1884), p. 75-158.
Les Archives de l'intendance sacrée à Délos (315-166 avant J.-C.). Paris: E. Thorin, 1887.
"Comptes et Inventaires des temples déliens en l'année 279", Bulletin de correspondance hellénique 14, 1890, p. 389-511 ; 15, 1891, p. 113-168.
Ab Urbe Condita Libri XXIII-XXV et XXVI-XXX. (edition of
Livy, 2nd edition) with notes, commentary, index, maps and plans, with
Othon Riemann. Paris: Hachette, 1891, 2 volumes.
"Topographie de Delphes", Bulletin de correspondance hellénique 21 (1897), p. 256-320.
"L'Aurige de Delphes". Monuments et Mémoires de la fondation Eugène Piot 4, 2, 1898.
"Monuments figurés de Delphes. Les fouilles du temple d'Apollon", Bulletin de correspondance hellénique 25 (1901), p. 457-515 ; 26, p. 587-639.
"L'Origine du chapiteau corinthien", Revue archéologique 2 (1916), p. 17-60.
"L'Origine des Cariatides", Revue archéologique 2, (1917), p. 1-67.[2]