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

Ptolemaeus Arabus et Latinus

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Cambridge, University Library, Kk 1.1 (1935)

s. XIII1 (probably before 1234).


England (Winchester?). The MS has been annotated in various places by a contemporary scholar, who mentions the year 1234 (‘Anno domini 1234o, quarto kal. Decembris…’, f. 125r), an eclipse seen in Winchester (‘Locus eclipsis pridie ydus… ad meridiem civitatis Wincen.’, f. 142v), the solar eclipse of 3 August 1236 (‘Anno domini 1236 eclipsis Solis ante meridiem’, f. 143r) and the summer solstice of 1238 (‘Anno domini 1238 solsticium 17 kal. Iulii…’, f. 143r).


Richard Holdsworth (d. 1649), Master of Emmanuel College, Cambridge.

Parchment, 239 f., several similar hands.

Astrology and astronomy mainly: table of contents, 15th c. (1v); Albumasar, Introductorium maius, tr. John of Seville (2ra-61ra); Ptolemaica (62ra-96rb and 96rb-96va); Pseudo-Aristotle, Physiognomia (97ra-98ra); Daniel of Morley, Philosophia (98ra-105ra); notes on the obliquity of the ecliptic ‘Si esset centrum solaris circuli in medio celi…’ (105ra-105vb); Pseudo-Messahallah, De compositione astrolabii, first part on construction c. 1-16 (105vb-109va); Jordanus of Nemore, De plana spera (109va-110vb); Jordanus of Nemore (?), De proportionibus (111r-112r); Ibn al-Ṣaffār, De opere astrolabii, anonymous tr. (112ra-117vb); canons of Toledan tables (118ra-119rb); Thebit Bencora, De imaginibus, added 15th c. (119v-120v); Thebit Bencora, Liber prestigiorum, fragment, added 15th c. (123v); faint notes dealing at least partly with theology (121v-123r and 124r); canons of Toledan tables (125r-139r); ‘Ars communis ad sciendum que sit hora noctis et puctus hore per stellas fixas…’ (139v-142r); calendar (142v-143v); Toledan tables (144v-172v); Pseudo-Thebit Bencora, De motu octave spere (173r-174v); canons of Toledan tables (174v); Toledan tables (175r-176v); Robert Grosseteste, Compotus (178r-191v); canons of London tables (192r-203v); magical formulas, added 15th c. (203v); Theorica planetarum ‘Quilibet trium planetarum altiorum…’ (204r-210v); ‘Tres circulos in astrolapsu descriptos…’ (210v-211v); Jordanus of Nemore, Elementa super demonstrationem ponderum, beginning only, due to missing pages (211v); Alfraganus, De scientia astrorum, tr. John of Seville (212r-222v); Roger of Hereford, Computus (222v-239r); faint note on arithmetic (239v). Blank: 1r, 61v, 121r, 124v, 144r, 177r-177v.


A Catalogue of the Manuscripts Preserved in the Library of the University of Cambridge, III, Cambridge, 1858, 547-550; R. Lemay, Abū Ma‘šar al-Balḫī [Albumasar]: Liber introductorii maioris ad scientiam judiciorum astrorum, Napoli, 1995-1996, IV, 56-63; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, I, 103-104; P. Binski, P. Zutshi, S. Panayotova, Western Illuminated Manuscripts: A Catalogue of the Collection in Cambridge University Library, Cambridge, 2011, 96-97 (no. 104); A. Lohr, Opera de computo saeculi duodecimi, Turnhout, 2015, XLI-XLII; A. Lohr, C. P. E. Nothaft, Robert Grosseteste’s Compotus, Oxford, 2019, 27-28.


‘Rerum, Yesure, in quibus est pronosticabilis scientie stellarum profectio magnas et precipuas esse perpendimus (?) — hoc in loco huic libro finem imponere non incongruum extimamus.’

= Ptolemy, Quadripartitum (tr. Plato of Tivoli) (A.2.1). I, 62ra-69va; II, 69va-78ra; III, 78ra-89rb; IV, 89rb-96rb. No glosses.


‘Cum proiectionem radiorum stellarum scire volueris, scias gradum ascendentis — erit locus radiationis equate.’

= Pseudo-Ptolemy, Liber proiectionis radiorum stellarum (B.17). No glosses.