The aforesaid books, charters, and muniments are to be placed in one or more common chests, each having two locks, one key of which shall for greater security be deposited with the Master, the other with the Senior Dean, who shall cause the books to be distributed to those scholars who have need of them, in the manner which has been more fully set forth in the section which treats of the office of the Deans[265]. The section referred to prescribes that the Deans are to distribute them [the books] to the scholars in such manner as shall appear to them expedient; and further, they shall, if they think proper, make each scholar take an oath that he will not alienate any book so borrowed, but will take all possible care of it, and restore it to the Master and Dean, at the expiration of the appointed time[266]. In 1473 Dr John Warkworth became Master. He was evidently a lover of books, for he gave to the Library fifty-five volumes, which he protected, after the fashion of an earlier age, by invoking a curse upon him who should alienate them. Moreover, during his Mastership, in 1480, the College enacted or adopted a special statute headed, _De libris Collegii_, which may be thus translated: In the name of God, Amen. As books are the most precious treasure of scholars, concerning which there ought to be the most diligent care and forethought, lest, as heretofore, they fall to decay or be lost, it is hereby appointed, settled, and ordained, by the Master and Fellows of the House or College of S. Peter in Cambridge, that no book which has been chained in the library there shall be taken away from, or removed out of, the library, except by special assent and consent of the Master and all the resident Fellows of the aforesaid College--it being understood that by resident Fellows a majority of the whole Society is meant. Provided always that no book which has been given to the library on condition of being kept perpetually chained therein shall, by virtue of this statute, be on any pretence removed from it, except only when it needs repair. Provided also that every book in the library which is to be selected and distributed shall have a certain value set upon it by the Master and the two Deans, and that indentures shall be drawn up recording the same. Once in every two years, in the Michaelmas Term, a fresh selection and distribution shall be held of every book which is not chained in the Library--the precise day to be fixed by the Master and the Senior Dean. No book so selected and distributed shall pass the night out of College, except by permission of the Master and the President and the other Dean who is not President; provided always that the said book be not kept out of the College for six months in succession.