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

Ptolemaeus Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.
%% (two percent signs) is the placeholder for no, one or more than one character, but not for blank space (so that a search ends at word boundaries).

At the beginning and at the end, these placeholders are superfluous.

New Haven, Yale University – Beinecke Rare Book and Manuscript Library, Mellon 25

s. XVex-XVIin (after 1493).


northern France or Burgundy.


Thomas Phillipps (no. 1037); Upperville, Library of Paul Mellon (no. 40); acquired by Yale University in 1965.

Parchment, 242 f. numbered I-XCX and CLI-CCI, a single very neat hand, deluxe MS richly decorated at the beginning of each section.

Astrology and astronomy: John of Saxony, comm. on Alcabitius’s Introductorius, ‘correctum per artium et medicine doctorem dominum Bartholomeum de Alten de Nusia’ (1ra-75va); Ptolemaica (77ra-99ra); Hermes, Centiloquium (99va-102rb); Hermes, Liber de stellis beibeniis (102rb-104rb); Bethen, Centiloquium (104va-106vb); Bethen, De horis planetarum (107ra-107vb); Capitula Almansoris (108ra-112rb); Zael, Liber iudiciorum (113ra-145vb, Introductorium, Quinquaginta precepta and De interrogationibus); Johannes Angelus, Astrolabium planum (147r-240v). Blank: 76, 112v, 146, 190, 241-242. F. 77-145, including the Ptolemaic section, are identical to and were in all likelihood copied on ed. Venice, Bonetus Locatellus, 1493, f. 107r-138r. F. 147-240 were copied on ed. Venice, Erhardus Ratdolt, 1488.


C. U. Faye, W. H. Bond, Supplement to the Census of Medieval and Renaissance Manuscripts in the United States and Canada, New York, 1962, 530 (Upperville, Mellon 40); L. C. Witten, R. Pachella, Alchemy and the Occult. A Catalogue of Books and Manuscripts from the Collection of Paul and Mary Mellon Given to Yale University Library, III: Manuscripts 1225-1671, New Haven, 1977, 163-171.


‘Centiloquium Ptholomei. Incipit liber centum verborum Ptholomei cum commento Haly. Dixit Ptholomeus: Iam scripsi tibi, Iesure, libros de hoc quod operantur stelle in hoc seculo… Verbum primum in cognicione eorum que verum iudicium perhibent. Scientia stellarum ex te et ex illis est… Expositio Haly super primo verbo. Quod dixit Ptho<lomeus>, ex te et illis, significat quod qui res futuras — Et ego Deum precor ut te diligat, quoniam perfecta est huius libri translatio 17 die mensis Marcii, 12 die mensis Gumedi secundi, anno Arabum 530. Liber Ptholomei quatuor tractatuum cum Centiloquio eiusdem et commento Haly feliciter finit.’

= Pseudo-Ptolemy, Centiloquium (tr. Plato of Tivoli) (B.1.2), with v. 1 also given in the ‘Mundanorum’ version (B.1.4) and in Adelard of Bath’s translation (B.1.1) (=‘threefold’ version), under the rubric ‘Additio’. No glosses.