Bumpus Students of ecclesiastical history and institutions will find much to value and enjoy in this dictionary. Terms like Alb, Ambo, Amice, Angelus are explained and illustrated, and frequent references to literature on them point the way to further study. The author's main interest is Anglican, but many matters of Roman ecclesiastical usage are treated. The Greek Church, however, is almost wholly passed over, doubtless of set purpose, since its usage and terminology are so different from those of Western Europe. More than 450 terms are discussed.