Richard de Bury, the famous old book collector or bibliomaniac to whom reference has already been made, bequeathed his books, which outnumbered all other collections in this country, to the University of Oxford, where they were housed in Durham College, which he had endowed. He has left an interesting account of how he gathered his treasures, which may fitly be quoted here. Aided by royal favour, he tells us, "we acquired a most ample facility of visiting at pleasure and of hunting as it were some of the most delightful coverts, the public and private libraries both of the regulars and the seculars.... Then the cabinets of the most notable monasteries were opened, cases were unlocked, caskets were unclasped, and astonished volumes which had slumbered for long ages in their sepulchres were roused up, and those that lay hid in dark places were overwhelmed with a new light.... Thus the sacred vessels of science came into the power of our disposal, some being given, some sold, and not a few lent for a time." The embassies with which he was charged by Edward III. gave him opportunity for hunting continental coverts also. "What a rush of the flood of pleasure rejoiced our hearts as often as we visited Paris, the paradise of the world!... There, in very deed, with an open treasury and untied purse-strings, we scattered money with a light heart, and redeemed inestimable books with dirt and dust." Richard de Bury also furthered his collection by making friends of the mendicant friars, and "allured them with the most familiar affability into a devotion to his person, and having allured, cherished them for the love of God with munificent liberality." The affability and liberality of the good bishop attained their object, and the devoted friars went about everywhere, searching and finding, and whenever he visited them, placed the treasures of their houses at his disposal. Although the mendicant orders were originally forbidden property of any kind, this rule was afterwards greatly relaxed, especially as regards books, and in Richard de Bury's time the friars had amassed large libraries and were well-known as keen collectors. In France it was not an uncommon practice for a monastery to levy a tax on its members or its dependent houses for the increase of its library, and in several houses it was customary for a novice to present writing materials at his entry and a book at the conclusion of his novitiate. As early as the close of the eleventh century Marchwart, Abbot of Corvey in North Germany, made it a rule that every novice on making his profession should add a book to the library.