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Ptolemaeus Arabus et Latinus

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Prague, Národní Knihovna České Republiky, I.G.6 (280)

s. XV2 (f. 120r-170r and 198v-199v were copied in 1488, see below; almanach for 1491 f. 233r-236v; other sections are older or based on older material, cf. e.g. the prognostication for 1455 f. 106r-109v, and several references to the years 1440s and even to the 14th c. in the computus and astronomical sections.


some sections were copied by Crux of Telč (d. 1504), at least partly at the monastery of Trěboň in Bohemia, cf. f. 170r: ‘Explicit almanach perpetuum septem planetarum per me fratrem Crucem de Telcz professum in Trzebon sub abbate domino Marco anno 1488 in vigilia sancti Iohannis Baptiste, eodem tempore Agnes virgo dominorum de Rosib. infirmabatur… et post tertio die in meridie defuncta est…’, and f. 199v: ‘Expliciunt excerpta cum tabulis de compoto Iudaico, finita per me Crucem de Telcz, feria post Lamberti in Witignaro (?) anno domini 1488, Marco abbate’; astronomical tables for Prague f. 104v and 223v-227r; f. 45r-53r are copied ‘per me Stephanum de Scheibs’ (f. 53r).


the MS belonged to Petr Vok of Rosenberg [Rožmberk] in 1609 (cf. ex-libris f. 309r: ‘Ex bibliotheca illustrissimi principis domini domini Petri Vok, Ursini domini domus a Rosenberg ultimi et senioris et e primatibus Bohemorum celsissimi et antiquis anno Christi 1609’) and it is likely that it had been the property of the Rosenberg family for a long time, for the prognostication for 1455 (f. 106r-109v) is addressed to Ulrich II of Rosenberg (d. 1462), and Crux of Telč reports, in his colophon of 1488 f. 170r (see above), that Agnes of Rosenberg fell sick and died. On Crux of Telč and his MSS, see L. Doležalová, ‘Personal Multiple-Text Manuscripts in Late Medieval Central Europe: The ‘Library’ of Crux of Telč (1434-1504)’, in The Emergence of Multiple-Text Manuscripts, eds A. Bausi, M. Friedrich, M. Maniaci, Berlin, 2019, 145-170.

Paper, 313 f., several hands, one of which copied f. 115v-117v.

Computus, astronomy and astrology in a collection of rare or unidentified texts, excerpts and notes often difficult to collate: Johannes de Polonia, Computus manualis metricus ‘Est duplex ciclus lunaris…’ (1r-2v); ‘Compotus est scientia ostendens tempora ex Solis et Lune motibus… Explicit compotus philosophicus’ (3r-23v); Johannes de Erfordia, Computus chirometralis (24r-32r); ‘Casus papales et episcopales. Carmina sunt quedam que scripta…’ (32v); Alexander of Villedieu, Massa compoti, with comm. (33r-44v); John of Gmunden, Tractatus de compositione chilindri (45r-53r); astronomical tables (53v-58v); computus ‘Incipiunt regule seu improprie canones figure que dicitur pheffircuthe…’ (59r-64v); tables and notes of computus and astrology (65r-67v); Computus orbicularis ‘Cum superiorum motus a quo omnia…’ (68r-81v); Theorica planetarum Gerardi (82r-89v); chronology ‘Differentia Ade et Diluvii…’ (90r-91r); planetary tables (91v-97v); ‘In firmamento celi sunt Sol et Luna et dividunt diem et noctem…’ (98r-101v); astrology ‘Ptolomeus in Almagesti Vir sapiens dominabitur astris et potest declarari…’ (102r-102v); star table (103r); table: geographical coordinates of cities (103v); diagram and notes of cosmology (104r); astronomical table for Prague (104v); tables and notes of computus (105r-105v); Martinus de Lancicia, prognostication for 1455 (106r-109v); astronomical calendar (110r-114v); Table: De flebotomia secundum cursum Lune per XII signa (115r); astrological and astronomical chapters copied horizontally (115v-117v), including Ptolemaica (115v-116r), ‘De diversis effectibus planetarum…’ (116r-116v) and Alchandreana ‘Si vis scire in quo signo sit Mars, sume annos ab initio mundi…’ (116v-117v); figure of celestial spheres, with ten spheres beyond Saturn (118r); astrological tables (118v-119v); Prophatius Judeus, Almanach, tables (120r-170r); ‘Pro meliori ac faciliori intellectu hic positorum…’ (170v-175r); astronomical calendar (175v-183v); tables and notes of computus and astrology (184r-188v); astronomical tables with canons ‘In nomine domini Ihesu Christi, amen. Quoniam multa dicta traduntur a diversis…’ (188v-193r); tables, diagrams and notes of computus and astrology (193v-210v); Astronomia Ypocratis (211r-217v); ‘De minutione. De farmaciis. Sublimis Deus non solum in…’ (218r-222v); astronomical tables (223r-239v), including ascension tables for Prague (223v-224r), a planetary almanach for 1491 (233r-236v) and ascension tables for the latitude 50° (237r-239v); canons of astronomical tables (240r-243r); Perscrutator, De impressionibus aeris, excerpts (244r-246v); astrometeorology ‘Diversitas aeris in temporibus caloris et frigoris scitur…’ (247r-261v); Albumasar, Flores, last chapter (261v-269r); ‘Galaxia est circulus celestis ceteris pulchrior incedens per medium celi…’ (270r-278r); table: elections from the aspects of the Moon with the other planets (278v); astronomical tables, in Czech (279r-280r); Table: De flebotomia secundum cursum Lune per XII signa (280v); calendar, with notes about Bohemia (281r-283v); empty tables (284r-284v); astrology ‘In nomine Ihesu. Zodiacus est circulus signorum et ille dividitur in 12 partes equales…’ (285r-294r); table of conjunctions Mars-Saturn and Mars-Jupiter 1381-1398 (295r); table of lunar mansions (296v); astronomical tables (297r-308v). Blank: 97bis-97quater, 243v, 246bisv, 258v, 269v, 294v, 295v-296r (except note f. 296r), 309-313 (except ex-libris f. 309r).


J. Truhlář, Catalogus codicum manu scriptorum qui in C.R. Bibliotheca Publica atque Universitatis Pragensis asservantur, I, Prague, 1905, 117-119 ; M. Markowski, Astronomica et astrologica Cracoviensia ante annum 1550, Firenze, 1990, 318.


‘Canon Ptolomei et Pytagore de diversis eventibus secundum naturas planetarum. R…tum (?) Ptolomei et Pictagore secundum naturas planetarum subtilissima doctrina conpilatum — Novem et 9 maior vincet.’

= Pseudo-Ptolemy, Canon Ptolemei et Pictagore de diversis eventibus secundum naturas planetarum (B.18). No glosses.