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Ptolemaeus Arabus et Latinus

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Oxford, Bodleian Library, Digby 168

s. XIV (f. 1-146).


England, most probably the university of Oxford, at least for f. 21-39 copied by Simon Bredon.


Simon Bredon, who bequeathed the MS to Merton College, Oxford, in 1372; Thomas Allen.

Parchment, 231 f. (foliation in pencil, upper right corner). Composite MS, of which the first part (f. 1-146) forms a unit copied by several similar English hands. Folia are missing at the beginning and in several places, including between f. 20-21, 64-65, 66-67, 69-70, 88-89, 115-116 and 130-131. The other parts date from the 13th and 14th c. acc. Macray.

Astronomy mainly: Richard of Wallingford, Quadripartitum, beginning missing (1r-13v); Alfraganus, De scientia astrorum, tr. John of Seville, end missing (13v-20vb); Ptolemaica (21r-39r); Campanus of Novara, Theorica planetarum (40ra-61va); Richard of Wallingford, Tractatus rectanguli (61va-64va); John of Ligneres, Equatorium planetarum (64vb-65rb); ‘Incipit secundus tractatus canonum fratris Rogeri de Cotum. Qui voluerit planetas equare seu eclipses solares…’, incomplete (65rb-66rb); John of London, De motu octave spere, end only (67ra); Ptolemaica (68ra-69vb); Roger of Hereford, Theorica planetarum (69vb-83vb); canons of Toledan tables (84ra-93vb); Theorica planetarum Gerardi (94ra-98ra); ‘Hic incipit almenak. In faciendo almenak sunt primo extrahendi…’ (98ra-98vb); ‘Incipit theorica planetarum nova. Sit circulus a et circulus signorum, id est zodiacus…’ (99ra-107rb); ascension tables (107v); Theorica planetarum Gerardi (108ra-113vb), with incomplete diagrams (114v-115r); astrological diagram (115v); anthology of texts of astronomy, geometry, arithmetic and optics, including by Geminus of Rhodes, Menelaus, Archimedes, Tres Fratres Filii Moysi, Autolicus, Ametus filius Josephi, Alkindi and Tideus (116ra-130vb); John of Saxony, Canones (131ra-135va); latitude tables for superior planets (136v-138r); Alfonsine tables (139r-144v and 146v); John of Ligneres, Canones (145ra-146rb). Blank: 39v, 66v, 67v, 114r, 135vb-136r, 138v. The other parts of the MS (147-231) contain historical and theological texts.


G. D. Macray, Catalogi codicum manuscriptorum Bibliothecae Bodleianae, IX: Codices a viro clarissimo Kenelm Digby, Oxford, 1883, 172-177; M. Clagett, Archimedes in the Middles Ages, I, Madison, 1964, xxvi-xxvii; F. S. Benjamin, G. J. Toomer, Campanus of Novara and Medieval Planetary Theory, Theorica planetarum, Madison-London, 1971, 66; J. D. North, Richard of Wallingford: An Edition of His Writings with Introduction, English Translation and Commentary, Oxford, 1976, II, 35-36; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, 144-145.



‘Bredon [in the upper margin, apparently by another hand]. Edicio Bredonis de Almagesti [lower margin, hand of the scribe]. Quoniam princeps nomine Albuguafe in libro suo quem scientiarum electionem et verborum nominavit — erunt qui provenerint anni Nabugodonosor, qui sunt per quos intrabis in hunc librum’ (followed by the two tables ‘Ferie annorum’ and ‘Reductio earum’).

= Simon Bredon, Commentary on the Almagest (C.1.8). Preface, 21r; I, 21r-23v (with lacuna I.3-12 due to three missing folia between f. 21 and 22); II, 24r-30v (beginning gone due to two missing folia between f. 23 and 24); III, 30v-39r. Corrections and marginal notes by the scribe (Simon Bredon).


‘Liber Thebit (title in upper margin, hand of the scribe). Liber quem edidit Thebit filius Thore de hiis que indigent expositione antequam legatur Almagesti. Equator diei est circulus maior qui describitur — propinqui oppositioni erit retrogradi. Explicit.’

= Thebit Bencora, De hiis que indigent expositione antequam legatur Almagesti (C.1.1). No glosses.