FELLER., François Xavier de (1735-1802), a Belgian author, was born at Brussels 18th August 1735. In 1752 he entered a school of the Jesuits at Rheims, where he manifested a great aptitude for mathematics and physical science. He commenced his noviciate two years afterwards, and in testimony of his admiration for the apostle of India added Xavier to his surname. On the expiry of his noviciate he became professor at Luxembourg, and afterwards at Liége. In 1764 he was appointed to the professorship of theology at Tyrnau in Hungary, but in 1771 he returned to Belgium and continued to discharge his professorial duties at Liége till the suppression of the Jesuits in 1773. The remainder of his life he devoted to study, travel, and literature. On the invasion of Belgium by the French in 1794 he went to Paderborn, and remained there two years, after which ho took up his residence at Ratisbon, where he died 23d May 1802.

Feller’s works exceed 120 volumes. In 1773 lie published, under the assumed name Flexier de Reval (an anagram of Xavier d·; Feller), his Catéchisme philosophique; and his principal work, Dictionnaire historique et littéraire (published in 1781 at Lieg·', in 8 volumes, and afterwards several times reprinted and continued down to 1848) appeared under the same name. Among his other works the most important are Cours de morale chrétienne et de littérature religieuse and his Coup (Tail sur congrès di Ems. The Journal historique et littéraire, published at Luxembourg and Liége from 1774 to 1794 in 70 volumes, was edited and in great part written by him.