This keeper must be a graduate in theology, and a good preacher. He is to live in the said chantry, and say mass daily in the chapel thereof. He is to take care of all the books in the library, which he is to open on every week-day for two hours before None, and for two hours after None, to all who wish to enter for the purpose of study. He is to explain hard and doubtful passages of scripture when asked to do so, and once in every week to deliver a public lecture in the library. Moreover on Holy Thursday he is to preach in the cathedral, or at the cross in the burial-ground. Further, in order to prevent any book being alienated, or carried away, or stolen from the library, a tripartite list of all the books is to be made, wherein the true value of each is to be set down. One of these lists is to be retained by the Bishop, another by the sacrist, and a third by the keeper. Whenever a book is bequeathed or given to the library it is to be at once set down in this list together with its true value. On the Friday after the feast of Relics (27 January) in each year, the sacrist and the keeper are carefully to compare the books with the list; and should any book have disappeared from the library through the carelessness of the keeper, he is to replace it or the value of it within one month, under a penalty of forty shillings, whereof twenty shillings is to be paid to the Bishop, and twenty shillings to the sacrist. When the aforesaid month has fully expired, the sacrist is to set apart out of his own salary a sum sufficient to pay the above fine, and to purchase and chain in the library as soon as possible another book of the same value and material. The keeper is to receive from the sacrist an annual salary of ten pounds, and four yards of woollen cloth to make him a gown and hood. The sacrist is to keep the chapel, library, books, and chains, together with the house built for the use of the keeper, in good repair; and he is, moreover, to find and maintain the vestments and lights required for the chapel. All these duties he is to swear on the Holy Gospels that he will faithfully perform.