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Ptolemaeus Arabus et Latinus

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Oxford, Bodleian Library, Digby 190

s. XIII-XIV.

Or.:

England.

Prov.:

Thomas Allen.

Parchment, 210 f. Composite MS made of various parts and fragments, of which f. 128-209 are in a single neat 13th- or 14th-c. hand (except for the last chapter of the Ptolemaic section f. 209r, added by a later, perhaps 14th-c. hand).

Natural philosophy, astronomy, computus and arithmetic: Albertus Magnus, De mineralibus, end gone (1ra-28vb); Roger Bacon (?), De principiis nature (29ra-37va); Roger Bacon (?), comm. on Aristotle’s Meteorologica ‘Cum ad notitiam impressionum habendam…’ (38ra-43ra); theology (44r-53r); Aelred of Rievaulx, De spirituali amicitia (54r-65v); John of Murs, Canones tabule tabularum, end only (66r); mathematical tables (66va); arithmetic ‘Cum agitur de numeris aut agitur de eis…’ (66vb-68vb); computus ‘Ad habendum circulum solarem sive litteram dominicalem…’ (69r-71r); computus verses (71v-72r); John of Ligneres, Algorismus de minutiis (72v-75r); computus tables (75v-76v); Roger Bacon (?), ‘De somno autem et vigilia pertractantes…’ (77ra-86vb); Roger Bacon, Metaphysica ‘Quoniam intentio principalis est innuere vobis vicia studii theologici…’, beginning only (86v); Alfraganus, De scientia astrorum, tr. John of Seville, end only (87r-87v); five paragraphs: ‘De inventione annorum Arabum per annos Christi’ (87va), ‘Tabula inventionis’ (87va), ‘Quadradura circuli per lunulas…’ (87va), ‘De mansionibus 7 planetarum’ (87vb) and ‘De inventione domorum planetarum septem in XII signis’ (87vb); ‘Boecius de disciplina scolarium summum inquit solacium…’ (88ra-89vb); Richard of Wallingford, Quadripartitum (90r-105r); ‘Sequitur que species sint sub ipso Aristotele. Motuum alius est generacio, alius corrupcio…’ (105v-127r); Gernardus, Algorismus demonstratus (128r-169r); Sacrobosco, Algorismus (169v-175r); Alexander of Villedieu, Carmen de algorismo (175r-180v); chapter index of a treatise of arithmetic (181v-183v); arithmetic ‘Eorum que sunt aliud continuum, aliud discretum…’ (184r-196v); Robert Grosseteste, De sphera, end only (197r); Robert Grosseteste, De iride (197v-200r and 201v); Ptolemaica (202r-209r). Blank: 43v, 53v, 127v, 181r, 200v-201r, 209v-210v.

Lit.

G. D. Macray, Catalogi codicum manuscriptorum Bibliothecae Bodleianae, IX: Codices a viro clarissimo Kenelm Digby, Oxford, 1883, 201-204; M. Clagett, Archimedes in the Middles Ages, I, Madison, 1964, xxiii; R. M. Thomson, Catalogue of Medieval Manuscripts of latin Commentaries on Aristotle in British Libraries, I: Oxford, Turnhout, 2011, 148-149.

202r‑209r

‘Capitulum sextum secunde dictionis Almagesti [title in margin, hand of the scribe]. Ad huius autem similitudinem in reliquis lineis equidistantibus equationi diei — (207r) apparens super terram et medietas meridiana semper occulta. Postquam iam remansit scientia equandi locum Solis per motum eius — (208r) Et illud erit in XLV min<uto> prime partis Piscis. Primus dies annorum Alexandri II — quod est inter annos Christi et annos Arabum DCXXI, VI, XV. Et ex hic levior facta est nobis scientia magnitudinis corporum per id quod scivimus — (208v) et est centuplum et septuagintuplum corporis terre fere. (209r, later hand) Capitulum tercium libri quarti magni Almagesti. Cum nos multi<plicaveri>mus quod iam ostensum est ex motu Solis — et triginta quinta et triginta sexta fere. Et cum…’

= Ptolemy, Almagesti (tr. Gerard of Cremona) (A.1.2)

, excerpts: II.6, 202r-207r; II.8, 207r-208r; III.10 (tables ‘Ferie annorum’ and ‘Reductio annorum’ appended to that chapter), 208r; V.16, 208r-208v; IV.3 (first lines only), 209r. A few corrections by the scribe, who also noted in the margin of f. 205v ‘Britania Maior’ and ‘medium Britanie Maioris’.