Excerptiones Rogeri Bacon ex auctoribus musicae artis; or correctly, Excerptiones Hogeri abbatis, &c.
MS. Cambridge:—Corp. Chr. Coll. 260 (olim 189).
Cf. MS. Milan:—Ambrosiana, Rogerii de Baccono de generatione et corruptione, de Musica, de prospectiva (Montfaucon, p. 523). Cf. Opera Inedita, 295 seq.
De sacrae scripturae profundis misteriis authore Rogero Bacon.
MS. London:—Gray’s Inn, 17 (sec. xv); the title is in a later hand. It is probably a version of the Expositiones Vocabulorum de singulis libris Bibliae Rogeri compotistae monachi S. Eadmundi;
MSS. Oxford:—Bodl. Laud. Misc. 176 (sec. xiv); Magd. Coll. 112 (sec. xv).
John, Roger Bacon’s favourite pupil, was certainly not John of London[1362], or John Peckham[1363]. On the other hand it is impossible to identify him with any known scholastic doctor. It is not certain whether he was a friar or whether he was ever at Oxford. About 1260 Roger Bacon found him probably at Paris, as a poor boy of fifteen eager to learn, but forced to beg his bread and to serve those who gave him the necessaries of life[1364].
‘I caused him,’ says Roger[1365], ‘to be taken care of and instructed for the love of God.’
The boy repaid his master’s care. Wishing to send a fit interpreter of his works to the Pope, Bacon writes[1366],