But in abbeys the chief of the obedientiaries was styled prior; and we cannot, perhaps, give a better idea of his functions than by borrowing a naval analogy, and calling him the abbot's first lieutenant; for, like that officer in a ship, the prior at all times carried on the internal discipline of the convent, and in the abbot's absence he was his vicegerent; wielding all the abbot's powers, except those of making or deposing obedientiaries and consecrating novices. He had a suite of apartments of his own, called the prior's chamber, or the prior's lodging; he could leave the house for a day or two on the business of the house, and had horses and servants appropriated to his use; whenever he entered the monks present rose out of respect; some little license in diet was allowed him in refectory, and he might also have refreshment in his own apartments; sometimes he entertained guests of a certain condition in his prior's chamber. Neither the prior, nor any of the obedientiaries, wore any distinctive dress or badge of office. In large convents he was assisted by a sub-prior. The _Sub-prior_ was the prior's deputy, sharing his duties in his residence, and fulfilling them in his absences. The especial functions appropriated to him seem to have been to say grace at dinner and supper, to see that all the doors were locked at five in the evening, and keep the keys until five next morning; and, by sleeping near the dormitory door, and by making private search, to prevent wandering about at night. In large monasteries there were additional sub-priors. The _Chantor_, or _Precentor_, appears to come next in order and dignity, since we are told that he was censed after the abbot and prior. He was choir-master; taught music to the monks and novices; and arranged and ruled everything which related to the conduct of divine service. His place in church was in the middle of the choir on the right side; he held an instrument in his hand, as modern leaders use a bâton; and his side of the choir commenced the chant. He was besides librarian, and keeper of the archives, and keeper of the abbey seal. He was assisted by a _Succentor_, who sat on the left side of the choir, and led that half of the choir in service. He assisted the chantor, and in his absence undertook his duties.