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Ptolemaeus Arabus et Latinus

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Oxford, Bodleian Library, Bodley 491

s. XIV (after 1339, date of John of Murs’s canons f. 32r-40v).




Thomas Allen (cf. f. 1r).

Parchment, V+169 f., a single neat hand, reserved initials.

Arithmetic, astronomy and astrology: table of contents, late medieval (Vv); Sacrobosco, Algorismus (1r-8r); Sacrobosco, De sphera (8v-22r); Theorica planetarum Gerardi (22v-31v); John of Murs, canons of Alfonsine tables ‘Prima tabula docet differentiam unius ere super aliam…’ (32r-40v); Alfonsine tables (41r-60r); canons of Toledan tables ‘De declinacione Solis. Cum autem declinacionem Solis…’ (60v); Toledan tables (61r-64v); Alcabitius, Introductorius (65r-96v); tables for the 12 signs showing essential dignities and degrees, with text ‘Aries igneum, domus Martis, exaltacio Solis…’ (97ra-99vb); ‘Aries habet faciem et caput et pupillam oculi…’, incomplete (100r-102r); horoscopic diagram showing the meaning of the 12 houses, with notes (102v); Thebit Bencora, De recta imaginatione spere et circulorum eius diversorum (103r-104v); Pseudo-Thebit Bencora, De motu octave spere (105r-109r); Thebit Bencora (?), De quantitate stellarum et planetarum et proportione terre (109v-111v); Ptolemaica (111v-116r); Petrus de Dacia, Expositio super Algorismum (116v-142r); Robertus Anglicus, comm. on Sacrobosco’s De sphera (142v-166r). Blank: Ir-Vr (except III-IV, containing unrelated material from another MS), 166v-169v.


F. Madan, H. H. E. Craster, A Summary Catalogue of Western Manuscripts in the Bodleian Library at Oxford, II.1, Oxford, 1922, 202-203 (no. 2083); F. S. Pedersen, Petri Philomenae de Dacia et Petri de S. Audomaro opera quadrivalia, København, 1983-1984, I, 71; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, I, 140.


‘Incipit liber Thebit Benchotach de hiis que indigent exposicione antequam legatur Almagesti. <E>quator diei est circulus maior qui describitur super 2 polos orbis — propinqui opposicioni erunt retrogradi. Expletus est liber Thebit filii Core de hiis que indigent exposicione antequam legatur Almagesti. Deo gracias. Explicit.’