Note 133 — Chapter II · (continued 3)

It was the custom in many of the monasteries of the VIth and VIIth centuries, especially those of the rule of S. Columba, for the monks to be divided into choirs, alternately officiating in the church, and by means of which the divine praises were uninterruptedly sung during the whole twenty-four hours. The "Perpetual Adoration" is the only similar institution in our day, and the small number of communities accounts for the discontinuance of the custom.