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Ptolemaeus Arabus et Latinus

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Florence, Biblioteca Medicea Laurenziana, Conv. Soppr. 414

s. XIIIex-XIVin (14th c. acc. Crociani et al., but the years 1263 and 1304 are given as the ‘present year’ in notes added by another hand on f. 60r and 63v, see below).


probably Paris. The MS is closely related to Paris, BnF, lat. 16657 (see) and Vatican, BAV, Reg. lat. 1261 (see), both of which were available in Paris in the second half of the 13th c.


Florence, basilica della Santissima Annunziata.

Parchment, 63 f., a single hand.

Astronomy and algebra: Ptolemaica (1r-45r and 46r-60r); astronomical note with two diagrams (45v); Liber restauracionis ‘Unitas est principium numeri et non est numerus…’ (60va-63vb).


L. Crociani, M. G. Ciardi Dupré Dal Pogetto, D. Liscia Bemporad, I codici della basilica della SS. Annunziata in Firenze nella Biblioteca Medicea Laurenziana, Firenze, 1983, 117-118 (no. 82); H. Zepeda, The First Latin Treatise on Ptolemy’s Astronomy: The Almagesti minor (c. 1200), Turnhout, 2018, 56-57; M. Moyon, ‘The Liber Restauracionis: A Newly Discovered Copy of a Mediaeval Algebra in Florence’, Historia Mathematica 46 (2019), 1-37: 4-5.


‘Incipit liber Albategni qui dicitur Almagesti parvum (title in upper margin by a later hand). Omnium recte philosophancium non solum verisimilibus et credibilibus tenebrarum sic se habent. Explicit hic sextus liber et sexti glosa textus.’

= Almagesti minor (C.1.3)

. The text is followed, on f. 45v, by two astronomical diagrams and a note, which are also found in MS Vatican, BAV, Reg. lat. 1261, f. 49v. Occasional short marginal notes.


‘Tabula stellarum fixarum secundum quod sunt semper in ymaginibus signorum. Stellatio Urse Minoris. Illa que est super extremitatem caude: 2s 7° 15’ – 66° 0’ – 3. Illa que est post istam super caudam: 2s 9° 35’ – 70° 0’ – 4 — chaugebe dicuntur comate.’

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

, VII.5-VIII.1, star catalogue, with longitudes adjusted +7°05’ (same in Paris, BnF, lat. 16657). A contemporary or somewhat later scribe added the coordinates of the Alfonsine tables (2s 17° 18’, 2s 19° 38’, etc.), as well as glosses, including the following one at the end (60r): ‘Notandum quod super tabulas hic positas ab antiquo addunt nove tabule Alfunsi 10 gradus et 3 minuta. Sed anno domini 1304 addebantur ad hoc 23 minuta. Et antique tabule hic posite addunt super tabulas Ptholomei in Almagesti de stellis fixis 0 signum 7 gradus 5 minuta, ita quod tempus presentis anni, scilicet 1304, addit super tempus Ptholomei 0 signum, 17 gradus, 8 minuta’. The date 1304 is confirmed by another gloss (60r, same hand), that speaks of 1185 years since Ptolemy’s epoch of 118 (!) A.D. The first gloss appears to be the very first mention of the Alfonsine tables, as early as in 1304 and most probably in Paris.