The oldest of the Sacramentaries or liturgical books. Only one manuscript is known, dating from the 7th century. Found in the library of the Cathedral Chapter of Verona, it was published by Joseph Bianchini in 1735 in the fourth volume of his edition of Anastasius Bibliothecarius and was by him arbitrarily attributed to Pope Leo I (440-461). On the strength of this attribution the book was included by the Ballerini in their edition of Leo (Venice, 1753-1757), and still bears the name Leonine. It contains neither Canon nor Ordinary of the Mass, but a collection of Propers (Collects, Secrets, Prefaces, Postcommunions, and Orationes super Populum), of various Masses, together with ordination forms arranged according to the civilyear and with much disorder.
This dictionary contains not only definitions and explanations of every subject in Religion, Scripture, tradition, doctrine, morals, sacraments, rites, customs, devotions and symbolism, but also accounts of the Church in every continent, country, diocese; missions, notable Catholic centers, cities, and places with religious names; religious orders, church societies, sects and false religions. It has brief articles also on historical events and personages, on the Old Testament and New, and on popes, prelates, priests, men and women of distinction, showing what the Church has done for civilization and correcting many errors which have hitherto passed for history.Wikipedia
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