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Ptolemaeus Arabus et Latinus

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Princeton, University Library, Garrett 99

s. XIIIex-XIVin (the years 1296 and 1297 mentioned in glosses f. 154v and 162r respectively).


France, probably Paris.


Wilfrid M. Voynich (1865-1930), who sold the MS to Robert Garrett (1875-1961), who in turn donated it to Princeton University Library in 1942.

Parchment, 236 f., several neat hands, decorated initials.

Astronomy and arithmetic: canons of Toledan tables (1ra-8ra); Toledan tables (8v-83r); tables of Toulouse (83v-94v); Petrus de Sancto Audomaro, Quadrans novus (95ra-114vb); star table (115r-115v); Sacrobosco, Algorismus (117ra-124ra); Sacrobosco, De sphera (124rb-136vb); Algorismus de fractionibus ‘Cum multos de numeris tractatus vidisses…’ (137ra-138vb); Sacrobosco, Computus (139ra-162rb); Robertus Anglicus, Quadrans vetus (162va-168va), with solar tables (168v-170v); Tabula Gerlandi (172v-173va); Pseudo-Robert Grosseteste, Kalendarium (173va-179v); Pseudo-Messahallah, De compositione astrolabii (180ra-198rb); Theorica planetarum Gerardi (198rb-206ra); Pseudo-Thebit Bencora, De motu octave spere (206ra-209rb, with diagram 217r); Ptolemaica (209rb-212vb); Thebit Bencora, De recta imaginatione spere et circulorum eius diversorum (212vb-214va); Thebit Bencora (?), De quantitate stellarum et planetarum et proportione terre (214vb-216vb); diagram from text f. 206r-209r above (217r); diagram of aspects (217v); on eclipses ‘Ut annos Arabum et menses…’ (218ra-228ra); table for computing the zodiacal position of the Moon (228v); added diagram and notes of computus (229r-230v); Johannes de Pulchro Rivo, Computus (231ra-234va); Easter dates 1370-1400, added (236r); scattered notes (236v). Blank: 116-116bis, 171r-172r, 235.


S. De Ricci, Census of Medieval and Renaissance Manuscripts in the United States and Canada, I, New York, 1935, 884; F. S. Pedersen, Petri Philomenae de Dacia et Petri de S. Audomaro opera quadrivalia, København, 1983-1984, II, 576; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, I, 172; D. C. Skemer, Medieval and Renaissance Manuscripts in the Princeton University Library, I, Princeton, 2013, 218-223.


‘Incipit liber Thebith Benchorath de his que indigent antequam legatur Almagest<i>. Equator diei est circulus maior qui describitur super duos polos orbis ― aut propinqui oppositioni erunt retrogradi. Expletus est liber Thebith filii Core de his que indigent antequam legatur Almagesti.’