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Ptolemaeus

Arabus et Latinus

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Milan, Biblioteca Ambrosiana, A. 183 inf.

s. XIII2-XIVin (f. 1-23, cf. table of conjunctions for 1254-1329 with example for 1294, f. 22r-23r) and XIV (f. 24-122). Or.: northern France, perhaps Paris, for f. 1-23; northern Italy for f. 24-79 (Cantele); Italy for f. 115-122 (Cantele).

Parchment, 122 f., of which f. 80-114 are now missing. MS made of three parts: I, f. 1-23 (several hands, one of which, very neat, copied f. 1-19, painted initials f. 1v, 7v, 14r); II, f. 24-79 (one or similar hands, except f. 77vb-79v, clearly copied by another hand); III, f. 115-122 (one or similar hands).

Astronomy, mathematics and astrology: end of a computus text ‘Explicit tractatus de compoto’ (1r); table of contents, 17th-c. (1r); Sacrobosco, De sphera (1v-7v); Pseudo-Jordanus, Liber de triangulis (7v-13v); Ptolemaica (14r-20r); ‘Hic fuit acceptio de Albategni. Integrorum multiplicatio est contra numerus…’ (20v); end (?) of a text on the astrolabe (21r); ‘Cum fuerit Luna cum Capite vel Cauda in uno signo…’ (21r); tables of conjunctions Sun-Moon 1254-1329 (22r-23r); Alcabitius, Introductorius, III.30-IV (24ra-28vb); Zael, Liber iudiciorum (29ra-56va); Messahallah, Liber receptionis (56vb-64va); Messahallah, De revolutionibus annorum mundi (64va-69va); Messahallah, Epistola de rebus eclipsium (69va-71ra); Astronomia Ypocratis, anonymous tr. (71rb-73va); Thebit Bencora, De imaginibus (73vb-76ra); Ptolemaica (76ra-77vb); Pseudo-Thebit Bencora, De motu octave spere (77vb-78vb); Thebit Bencora, De recta imaginatione spere et circulorum eius diversorum (79va-79vb); Algorismi, Algebra (115ra-120ra); Sacrobosco, Algorismus (120va-122vb). Blank: 21v, 23v, 79r.  According to the table of contents f. 1r, the now missing folia (f. 80-114) contained ‘Roberti Sticford [?Stickford, Lincolnshire] monachi tractatus de umbris’ (80-) and ‘De signis aquarum et ventorum’ (108-).

Lit. P. Revelli, I codici Ambrosiani di contenuto geografico, Milano, 1929, 24-25 (no. 11); L. Thorndike, ‘Some Little Known Astronomical and Mathematical Manuscripts’, Osiris 8 (1948), 41-72: 48-49; R. Cipriani, Codici miniati dell’Ambrosiana. Contributo a un catalogo, Vicenza, 1968, 153; A. L. Gabriel, A Summary Catalogue of Microfilms of One Thousand Scientific Manuscripts in the Ambrosiana Library, Milan, Notre Dame, 1968, 44-46 (no. 33); Inventario Ceruti dei manoscritti della Biblioteca Ambrosiana, ed. A. Paredi, I, Trezzano, 1973, 97-99; J. Agrimi, Tecnica e scienza nella cultura medievale. Inventario dei manoscritti relativi alla scienza e alla tecnica medievale (secc. XI-XV). Biblioteche di Lombardia, Firenze, 1976, 151-153 (no. CLXXX); P. O. Kristeller, Iter Italicum, VI, London-Leiden, 1992, 32; D. Cantele, ‘I codici illustrati di Giovanno Sacrobosco’, in Nuove ricerche su codici in scrittura latina dell’Ambrosiana. Atti del Convegno Milano, 6-7 ottobre 2005, eds M. Ferrari, M. Navoni, Milano, 2007, 317-330: 317-323.

14r‑20r

‘[translator’s preface] Quemadmodum Ptholomeus et ante eum non nulli veteris auctoritatis viri antiquas seculi scribunt hystorias… (14v) [text] Cum possibile sit, Iesuri, et plerumque necessarium ut in plano represententur sp… (?) circuli in speram corpoream incidentes — (19v) et cum circulis meridianis signa distinguentibus. Explicit liber translatus Tolose anno domini 1144 kal. Iunii [followed by diagrams f. 19v-20r].’

76ra‑77vb

‘Incipit astrologia Thesbit Bencora super Almagesti. Thesbit Bencorat radiosa mentis… (76rb) Liber Tebit Bencorat (?) de hiis que necessaria sunt ante lectionem Almagesti. Circulus equinoctialis ― in oppositione Solis aut propinqui opposito erunt retrogradi. Explicit astrologia Thesbit Bencore super Almagesti.’

= Thebit Bencora, De hiis que indigent expositione antequam legatur Almagesti (C.1.1), revised version. Marginal notes by the scribe f. 76v.