Under this heading is classed the Book of Gospels at Lichfield Cathedral and the Book of Gospels given by Athelstan to Christ Church in Canterbury, now in the library of Lambeth Palace (Rock, "Church of our Fathers", I, 122).
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The entire office, or series of prayers and psalms said (or chanted) in the Roman Catholic Church — Vespers, Matins, Lauds and Mass — is called plenarium.