[1] He was a good palaeographer and had a thorough knowledge of archives and manuscripts; and he soon achieved a high reputation among scholars of the history of medieval France.

This marked him out as a capable editor for the new edition of L'histoire générale de Languedoc by Dom Vaissète: he superintended the reprinting of the text, adding notes on the feudal administration of this province from 900 to 1250, on the government of Alphonse of Toulouse, brother of St Louis (1220–1271), and on the historical geography of the province of Languedoc in the Middle Ages.

[1] He also wrote a Bibliographie du Languedoc, which was awarded a prize by the Académie des Inscriptions et Belles-Lettres, but remained in manuscript.

[1] Applying to the French classics the rigorous method used with regard to the texts of the Middle Ages, he published the Pensées of Pascal, revised with the original manuscript (1887–1889), and the Provinciales (1891), edited with notes.

He died after a short illness, leaving in manuscript a criticism on the sources of the Speculum historiale of Vincent de Beauvais.