Parchment, 124 f., one main hand, magnificently illustrated MS.

Astronomy, astrology and computus: figure of the celestial spheres (1r); comm. on Sacrobosco’s De sphera ‘Ex quo in hoc libro determinatur de astronomia. Sciendum est quod assignatur differencia inter astronomiam et astrologiam…’ (1va-21v); ‘Summa principiorum et eorum que oportent presciri in scientiam astronomie et ad librum Ptholomei Almagesti, et ad intelligendum Tractatum de spera. Equator diei est circulus maior in spera occulta que describitur super duos polos…’ (23r-34r, see Note below), followed by astronomical diagrams at least partly related to the text (34v-40r); on the constellations ‘Artophilax sive Boetes: huius manum sinistram circulus…’ (41ra-50ra); ‘Cubitum autem est in quo longitude, latitude et profunditas…’ (51r-51v); Ptolemaica (52r-52v); diagram: spheres of Venus and Mercury (53r); astronomical diagram, unfinished (53v); lunarium ‘Prima die incesionis Lune sanguinem minuere licet tota die, sompnium in gaudium, cito evadet…’ (54r-55r); reworked excerpts from the Alchandreana ‘Planete que sunt de aqua et foco…’ (55r-56v); ‘Martii signum sunt Pisces, in quo mense oritur initium Piscis…’ (56v-58v); astronomical tables with canons (59r-69r); Robertus Anglicus, Quadrans vetus (69v-81r); calendar (83r-88v); table for computing the zodiacal position of the Moon (89r); ‘Ad inveniendum quinque festa mobilia per claves anni. Si vis invenire quinque festa mobile…’ (89v-92v); astronomical calendar (93r-98v); table for computing the zodiacal position of the Moon (99r), with canon (99r-99v); ‘Si quis per hunc kalendarium scire voluerit qua die, qua hora et qua parte hore…’ (99v-100v); table: De electionibus secundum cursum Lune per XII signa (101r); ‘Triginta dies periculosi. Notandum quod quolibet anno sunt 30 dies periculosi…’ (101v-102r); ‘Sciendum est quod prima hora debet dari Saturno…’ (102r-102v); short paragraphs of astrology, astronomy, medicine and computus (102v-103r); table: horologium (103v); table for computing the zodiacal position of the Moon (104v); astronomical calendar (105r-110v); computus, in German (111r-119v); Revelatio Esdrae ‘Feria prima, hiemps bona, ver ventosum, estas sicca…’ (121r-121v); ‘Quibus terris quodlibet signum presit. Aries habet terram Caldeorum in oriente…’ (121v); astronomical tables (124r-124v). Blank: 22, 40v, 50v, 81v-82v, 104r, 120, 122-123.

Note The incipit and several sections of the text f. 23r-34r are similar to Thebit Bencora’s De hiis que indigent expositione antequam legatur Almagesti (C.1.1), but it is a different and more elaborate astronomical text based on Ptolemy and other authorities. The same text is also preserved in MS Basel, UB, O.IV.4, f. 26r-31r (see).

Bibl. A.-F. Delandine, Manuscrits de la bibliothèque de Lyon, I, Paris-Lyon, 1812, 175-176 (no. 104); Catalogue général des manuscrits des bibliothèques publiques de France. Départements, XXX, Paris, 1900, 33-34; D. Blume, M. Haffner, W. Metzger, Sternbilder des Mittelalters und der Renaissance. Der gemalte Himmel zwischen Wissenschaft und Phantasie, II: 1200-1500, Berlin, 2016, 2 vols, II.1: Text und Katalog der Handschriften, 480-486.