Charles François d'Abra de Raconis
Physical Effects of Abstinence
Acacius, Patriarch of Constantinople
Diocese of Ascoli, Satriano, and Cirignola
Acclamation (in Papal Elections)
The Ass (in Caricature of Christian Beliefs and Practices)
Assemblies of the French Clergy
Assistant at the Pontifical Throne
Right of Voluntary Association
Association of Priestly Perseverance
Little Sisters of the Assumption
Feast of the Assumption of the Blessed Virgin Mary
Vicariate Apostolic of Athabasca
François Hédelin, Abbé d'Aubignac
Teaching of St. Augustine of Hippo
Works of St. Augustine of Hippo
Augustinians of the Assumption
Pierre du Bois, Baron d'Avaugour
John Emerich Edward Dalberg Acton, Baron Acton
Ad Apostolicae Dignitatis Apicem
Adam in Early Christian Liturgy and Literature
Administrator (of Ecclesiastical Property)
Advocates of Roman Congregations
Charles Constance César Joseph Matthieu d'Agoult
Heinrich Cornelius Agrippa of Nettesheim
Michael and Nicetas Akominatos
Bl. Albert Berdini of Sarteano
Diocese of Alessandria della Paglia
Alpha and Omega (in Jewish Theology)
History of the Christian Altar
Fernando Alvarez de Toledo, Duke of Alva
Ambo (in the Russian and Greek Church)
Pre-Columbian Discovery of America
American Protective Association
Heinrich Bernhard, Freiherr von Andlaw
Bl. Angelo Carletti di Chivasso
Early Christian Representations of Angels
College and Church of the Anima (in Rome)
Annunciation of the Blessed Virgin Mary
Feast of the Annunciation of the Blessed Virgin Mary
St. Anselm of Lucca, the Younger
Antiphon (in the Greek Church)
Vicariate Apostolic of Antofogaste
Fray Domingo de la Anunciación
Apostolic Union of Secular Priests
Diocese of Aquino, Sora, and Pontecorvo
Prefecture Apostolic of Araucania
Commission of Sacred Archæology
The counterpart of concentus. In the ancient Church music all that portion of the liturgical song which was performed by the entire choir, or by sections of it, say two or three singers, was called concentus. Thus hymns, psalms, and alleluias were, generally speaking, included under the term concentus. On the other hand. such parts of the liturgy as the priest, or the deacon, or subdeacon, or the acolyte sang alone were called accentus; such were the Collects, the Epistle and Gospel, the Preface, in short anything which was recited chiefly on one tone, rather than sung, by the priest or one of his assistants. The accentus should never be accompanied by harmonies, whether of voices or of instruments, although the concentus may receive an accompaniment. The words Gloria in excelsis Deo and Credo in Unum Deum, being assigned to the celebrant, should not be repeated by the choir or accompanied by the organ or other musical instrument.
J.A. VÖLKER