But to many the most interesting volume in the library will be a copy of South's Sermons, published in 1694. It belonged to Dr Johnson, and was used by him in the compilation of his Dictionary. His method, apparently, was to put a letter in the margin opposite the word whose particular use here he intended to quote; and it is interesting, Sermons in hand, to test his method with the dictionary. On one page a "K" in the margin is opposite the word "Key." In the dictionary will be found under "Key" the expected quotation from South, "that every man should keep the key of his own breast." The most valuable book in the library is the _Textus S. Ceddæ_, generally known as "St. Chad's Gospels." This is written on vellum, and contains the Gospels of St. Matthew and St. Mark, and a small portion of the Gospel of St. Luke. It is undoubtedly an Irish MS., probably about the end of the seventh century. There is a page in the book which, with its tesselated work enclosing a cross, recalls to antiquarians similar work in the famous Irish Book of Kells, and in the Gospels of St. Columba which are preserved at Dublin. The connection of an Irish MS. with St. Chad is not difficult of explanation, since, after being taught by St. Aidan at Lindisfarne, he is supposed to have gone, as so many other earnest priests did at the time, to Ireland, to one of the noted monasteries there. The MS. is in Latin, and, with many remarkable variations, follows closely the _Codex Amiatinus_ of St Jerome. But its marginal notes are not the least interesting part of the book; from these, which are sometimes in Celtic and Anglo-Saxon, and sometimes in Latin, we learn something of its history, which is remarkable. The cathedral of Llandaff seems to have acquired it indirectly in exchange for a horse, and there is a note in Celtic, "underneath the record of this transaction, which is witnessed by Aidan; whether or no this is the Northumbrian bishop is not known." Another entry, on the page devoted to a picture of St. Luke, shows that the MS. was still at Llandaff at the end of the ninth century; but on the first page of all is a faint but legible signature which reads "Kynsy" or "Wynsy Praesul", both names of bishops of Lichfield at the end of the tenth century, so that it had probably arrived at its present home not so far short of a thousand years ago. There are other notes connecting it with Lichfield. All these have been printed many times in the pages of learned publications. It owes its escape at the time of the Civil War to the vigilance of William Higgins, Archdeacon of Derby, who was precentor of the cathedral. He abstracted it and kept it until the troubles were over. It now lies in a glass case in the library, side by side with the beautiful "Canterbury Tales." So marvellous are some of the decorations, that it is no wonder that, in an age more faithful than ours, popular belief declared some of them to be "the work of angels." CHAPTER IV THE HISTORY OF THE SEE