Equal care was taken of the books which were not circulated. At Merton they were to be kept under three locks (1276). The deeds, books, muniments, and money of Stapeldon Hall or Exeter College were kept in a chest, of which one key was in the hands of the Rector, another of the Senior Scholar, and a third of the Chaplain (statutes, 1316). Three different locks, two large and one small, were used to secure the library door of New College: the Senior Dean and the Senior Bursar had the keys of the large locks, and each Fellow had a key of the small lock; all three locks were to be secured at night (statutes, 1400). An indenture was drawn up of all the books, charters, and muniments of Peterhouse in the presence of the greater number of the scholars: all the books were named and classified according to faculty. One part of the indenture was retained by the Master, the other part by the Deans. All these books and records were preserved in chests, each of which had two keys, one in the care of the Master, the other in the hands of the Senior Dean (statutes, 1344). Books being regarded as an inestimable treasure, which ought to be most religiously guarded, they could not be taken from Peterhouse, if chained up, except with the consent of the Master and all the Fellows in residence, who must be a majority of the whole Society; and books given on condition of being chained were not to be removed under any pretext, excepting only for repair. Even _libri distribuendi_ were not to be without the college at night, except by permission of the Master or a Dean, and then they could not be retained for six months in succession (statute, 1480).
To detect missing books stock was taken, usually once a year: again, as in the monasteries. Once a year on a fixed day the books of Oriel were to be brought out and displayed for inspection before the Provost or his deputy and all the Fellows (statutes, 1329). The same ceremony took place at Trinity Hall twice a year; the books were to be laid out one by one, so that they could be seen by everybody (statutes, 1350); at Peterhouse the inspection was held only once in two years (statute, 1480). At All Souls an inspection was held (statutes, 1443); at the Pembroke College inspection each book was exhibited in order to the Masters and Fellows. At Magdalen, as elsewhere, the inspection was thorough: the books were to be shown _realiter, visibiliter, et distincte_.