Note * — Chapter II · SOME HYMNS OF GREAT WITNESSES.

“Proses” were original passages introduced into ecclesiastical chants in the 10th century. During and after the 11th century they were called “Sequences” (i.e. following the “Gospel” in the liturgy), and were in metrical form, having a prayerful tone. “Sequentia pro defunctis” was the later title of the “Dies Irae.”