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Ptolemaeus Arabus et Latinus

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Wolfenbüttel, Herzog August Bibliothek, 65 Aug. 2° (2637)

s. XV (f. 171-232 are in a single hand dated 1422 for f. 185r-229v and 1455 for f. 180-184 (see below); in or after 1468 for f. 325-334; probably 1474 for f. 339-348, cf. f. 345v: ‘Finis optatus 1474° 29 Aprilis…’).


f. 171-229 were copied by one Wilhelmus Gezenstorffer or Geczenstorff (cf. f. 184vb: ‘Explicit Theorica planetarum per Wilhelmum Gezenstorffer anno domini M°CCCC°LV° die secunda mensis Augusti’ and 229v: ‘Finite sunt hee tabule illustris regis ac principis Alfoncii per me Wilhelmi Geczentorff undecimo kalendas Novembris anno M°CCCC°XXII°’).


f. 81r bears a 16th-c. ex-libris of St Ulrich’s and St Afra’s Abbey in Augsburg, but this may apply to f. 81-102 only.

Paper, 348 f., MS made of 15 parts, each copied by a single hand unless otherwise noted: f. 1-8 (printed text), 9-80, 81-102, 103-114, 115-123, 124-131 (at least three hands), 132-142, 143-155, 156-170, 171-184, 185-232 (same hand as f. 171-184), 233-310, 311-324, 325-338 (two or three hands) and 339-348.

Geometry, astronomy and astrology: comm. on Statius’s Thebais (f. 1-8, printed text); Euclid, Elementa, ed. Campanus of Novara, Books I-VI (9r-75v); Hyginus, De astronomia (81r-95v); Gerbert of Aurillac, letter to Constantine of Fleury on the construction of a celestial sphere ‘Descriptio rotunde spere. Spera ad celestes circulos vel signa ostenda…’ (95v-96r); Excerptum de astrologia Arati (96r-97r); judgement on a nativity of 30 October 1466, incomplete (103v-106r); judgement on a nativity of 15 October 1442 in Mantua (108v-113r); Nicholaus Karolo (or Nicolaus Karlo) of Venice, judgement on the nativity of Ludovico III Gonzaga (116r-121v); astrological judgement addressed to a pope, probably Paul II ‘Antequam beatissimie pater fuisset quicquam per s. v. de pace conclusum…’ (124r-130r); prognostication for 1465 (132r-142v); ‘Speram in planum proicere. Describatur super centrum A…’ (143r-151v); astronomical tables (159r-170r); canons of Toledan tables (171ra-180va); Theorica planetarum Gerardi (180vb-184vb); Alfonsine tables (185r-229v); ‘Et quia sepe queritur que hora sit tam de die quam de nocte…’ (229v); Ptolemaica (229v); ‘Tractatus de mensuracionibus. Tractatus de mensuracionibus et primo de mensuracione rerum altitudinem…’ (230r-232r); table: points of essential dignities of each planet in the 12 signs (232v); table: geographical coordinates of 28 cities, mainly Italian and German (232v); planetary tables (233r-304v); syzygy and eclipse tables for Paris 1321 (306r-308r); canons ‘Tempus prime coniunctionis Ianuarii anni cuiuscumque…’ (308v-309r); John of Saxony, canons ‘Non fuit mortuus qui scientiam vivificavit…’ (311r-323v); prognostication for the years 1468-1469, addressed to Paul II (325r-334r); canons ‘Exempla canonum Iohannis de Lineriis primi mobilis edita a Iohanne de Saxonia. Quia plures astrologorum diversos libros fecerunt…’ (339r-345v); ‘Practicam generalem cuiuslibet eclipsis Lune…’ (346r-348r). Blank: 76-80, 97v-103r, 106v-108r, 113v-115v, 122-123, 130v-131v, 152-158, 170v (except note about the latitude of Basel and Ingolstadt), 305, 309v-310, 324, 334v-338r, 348v.


Kataloge der Herzog August Bibliothek Wolfenbüttel, VI: O. von Heinemann, Die Augusteischen Handschriften, 3: Codex Guelferbytanus 32.7 Augusteus 2º bis 77.3 Augusteus 2º, Frankfurt/Main, 1966, 334-335; M. Folkerts, ‘Mittelalterliche mathematische Handschriften in westlichen Sprachen in der Herzog August Bibliothek Wolfenbüttel. Ein vorläufiges Verzeichnis’, Centaurus 25 (1981), 1-49: 14-15; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, I, 186-187.


‘Dixerunt Ptolomeus et Hermes quod locus Lune in hora — et hoc expertus fuit multociens etc.’