Assemani. I. Joseph Simon, a Syrian orientalist, born at Tripoli (Tarablus) in 1687, died in Rome, Jan. 14, 1768. After spending many years in the study of eastern languages, he was employed to collect oriental manuscripts for the library of the Vatican, and finally appointed custodian of the collection, which he largely increased. His principal works are: Biblio-theca Orientalis Clementina-Vaticana (Rome, 17l9-'28); Kalendaria Ecclesiae Universae (1755-7); Bibliotheca Juris Orientalis Cano-nici et Civilus (1762-'4). He edited also an edition of the Opera Ephraemi Syri (1732-'46). II. Stephan Evodins, nephew of the preceding, born at Tripoli in 1707, died Nov. 24, 1782. Like his uncle he devoted himself to the study of oriental languages, and like him was made custodian of that department of the library of the Vatican, from which post he was appointed archbishop of Apamea. His investigations among oriental manuscripts were embodied in his two works, Bibliothecae Mediceo-Laurentinm et Palatinae Codices Manuscripti Orientales (Florence, 1742), and Acta Sanctorum Martyrum Orientalium et Occidenta-lium (Rome, 1748). III. Joseph Aloysins, broth- er of the preceding, born at Tripoli about 1710, died in Rome, Feb. 9, 1782. Pursuing the same studies as his uncle and brother, he was appointed professor in the Sapienza at Rome. His works are: Codex Liturgicus Ecclesiae Universalis (Rome, 1749), and De Catholicis sen Patriarchis Chaldaeorum Nestorianorum (Rome, 1775). IV. Simon, a distant relative of the preceding, born at Tripoli, Feb. 20, 1752, died in Padua, April 8, 1821. In 1785 he was appointed professor of oriental languages at Padua, and acquired fame as a student of oriental numismatics, on which subject he published his Museo cufico Naniano illustrato (Padua, 1787-'8), and other works.