Complex sentence: In 1882 he became a professor of archaeology at the Ecole du Louvre, and was also an editor of "Revue Archeologique" and a member of Académie des Inscriptions et Belles-Lettres.
Split into simpler sentences: In 1882 he became a professor of archaeology at the École du Louvre. He was an editor of "Revue Archeologique" and a member of Académie des Inscriptions et Belles-Lettres.