Project icon: lavishly furnished initial letter with a painting of Ptolemy using an astrolab.

Ptolemaeus Arabus et Latinus

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Vatican, Biblioteca Apostolica Vaticana, Ottob. lat. 2234

s. XIV1.

Or.:

perhaps northern Italy (mention of Cremona f. 64v).

Prov.:

fainted or erased note on f. 64v, perhaps in the hand of the glossator: ‘Iste liber est … (?) 1396 die 8 (?) Octobris … (?)’; Cardinal Marcello Cervini (1501-1555); Cardinal Guglielmo Sirleto (1514-1585).

Parchment, 64 f., one or two similar hands (f. 2ra-42ra and 43ra-64r), with a third, contemporary or somewhat later hand, responsible for the glosses and for the added notes f. 1r-1v, 42ra-42vb and 64v, decorated initials.

Astronomy: added notes on the length of the solar year, mentioning the years 1297 and 1336, with two tables of planetary positions, which do not seem to make sense (1r); added list of theorems (?) ‘Prima duodecimi libri. Prima: Omnium duarum superficierum…’ (1v); Ptolemaica (2ra-42ra); added note: ‘Iste modus est sufficiens in arte eptagoni cadentis in circulo…’ (42ra-42vb); Menelaus, Spherica (43ra-53vb); ‘Volo ostendere quod omnium trium linearum proportionalium…’ (53vb); Theodosius, Spherica, tr. Gerard of Cremona (54ra-64rb); added astronomical notes mentioning the city of Cremona (64v).

Lit.

Inventarii codicum manuscriptorum Latinorum Bibliothecae Vaticanae Ottobonianae (handwritten catalogue), II, 185v; J. F. Daly, C. J. Ermatinger, ‘Mathematics in the Codices Ottobiani latini’, Manuscripta 9 (1965), 12-29: 22-23; F. Fossier, ‘Premières recherches sur les manuscrits latins du cardinal Marcello Cervini (1501-1555)’, Mélanges de l’Ecole Française de Rome. Moyen Age, Temps Modernes 91 (1979), 381-456: 443 (no. 464) and 450.

(2ra‑42ra)

‘… [erased title]. Scientia species habet quarum melior post scientiam (40vb) sunt digniores ut evanescant et destruantur. Completa est declaratio eius. Completus est tractatus novus, est ultimus libri.’

= Geber, Liber super Almagesti (C.1.2). Preface, 2ra-2va; I, 2va-5va; II, 5va-10va; III, 10va-12va; IV, 12va-16vb; V, 16vb-23ra; VI, 23ra-29ra; VII, 29ra-34va and 41ra-41va; VIII, 41va-42ra and 35ra-37rb; IX, 37rb-40vb. F. 41-42 should be placed between f. 34 and 35. A few glosses. The title of the book is given twice f. 1v: ‘Liber astrologie Ieber’ (contemporary hand, perhaps that of the scribe) and ‘Geber de astrologia’ (later hand).