Anthony-à-Wood, as the most probable year of his death, though foreign works frequently state that he died in 1284. He was buried in the church of the Franciscans at Oxford. The manuscripts which he left behind him were immediately put under lock and key by the magic-fearing survivors of his order, until, not so lucky as those of another wizard, Michael Scott, they are said to have been eaten by insects. Of the asserted works of Bacon there is a very large catalogue, cited mostly from Bale and Pits, in the preface to Dr. Jebb's edition of the 'Opus Majus.' They amount to five on grammar, six on pure mathematics, seventeen on mechanics and general physics, ten on optics, six on geography, seven on astronomy, one on chronology, nine on chemistry and alchemy, five on magic, eight on logic and metaphysics, nine on medicine, six on theology, twelve miscellaneous; a hundred and one in all. But it is most likely that the greater part of these were extracts from the 'Opus Majus,' &c., with separate titles, that some are not genuine, and that others are more properly attributable to the two other Bacons already mentioned. The principal manuscripts of the 'Opus Majus' are, one in Trinity College Library, Dublin, discovered by Dr. Jebb, which forms the text of his edition, two in the Cottonian Library, one in the Harleian, one in the library of Corpus Christi College, Cambridge, one in that of Magdalen College, two in the King's Library, all containing various parts of the work. These are independent of the 'Opus Minus' and 'Opus Tertium' in the Cottonian Library, already mentioned, of some in Lambeth Palace, in the Bodleian Library at Oxford, and a host of others at home and abroad which we cannot specify. The Dublin manuscript is the only entire one with which Dr. Jebb was acquainted. It is a folio of 249 leaves, beautifully written on thick paper, with a good margin, and in double columns. It is not dated, but from the character of the writing it is judged to be of the reign of Henry VIII., or perhaps the early part of that of Elizabeth. The geometrical figures are neatly drawn in the margin. Pope Clement's letters are in the Vatican Library.