Twyne perhaps made his extracts from Arundel 377, for immediately after them he gives extracts “from William of Conches who is together with Daniel Merlai in our library,” and in Arundel 377 Daniel’s work is immediately followed by that of William of Conches. Moreover, of the Selden MSS which are now in the Bodleian, Supra 72 was once owned by Lord “William Howarde” who died in 1640, while Supra 77 is marked “Arundel,” referring presumably to Thomas Howard, Earl of Arundel, who died in 1646, and Supra 79 consists of astronomical and astrological treatises copied by Brian Twyne. If MSS which once belonged to the Arundel collection and to Twyne have thus passed somehow into the Selden collection and are found listed there in close proximity to one another, it is at least tempting to conjecture that the MS containing Daniel’s treatise, followed by that of William of Conches, which Twyne says was once “in our library,” somehow became Arundel 377. BN 6415 does not contain _De philosophia Danielis_, as stated by C. Jourdain (1838) p. 101; Jourdain, however, regarded Adelard of Bath as the author of _De philosophia Danielis_, and BN 6415 does contain Adelard’s _Questiones naturales_. Balliol 96, 15th century, a commentary upon Aristotle’s eight books of Physics in the form of questions and preceded by a prologue, “Expliciunt questiones super 8 libros phisicorum compilate a domino Marlo magistro in artibus Tholose ac canonico de Timsey.” This does not seem to be a work by Daniel of Morley; a cursory examination revealed no reason for thinking that _domino Marlo_ should read _Daniele Merlai_, or that _Tholose_ should be _Tholeto_. I have not examined two MSS at Queen’s College, Oxford, Reg. lxxi; lxxiv, 4) containing pedigrees of the Morlay or Morley family which may possibly throw some light upon Daniel’s identity. All the printing that has been done of Daniel’s treatise has been based upon Arundel 377. J. O. Halliwell, _Rara Mathematica_, 1839, and Thomas Wright, _Biographia Literaria_, London, 1846, II, 227-30, printed the preface and other brief extracts for the first time.