Ptolemaeus Arabus et Latinus

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Florence, Biblioteca Medicea Laurenziana, Plut. 18 sin. 6

s. XIV1.


Florence, church Santa Croce.

Parchment, 96 f. (new foliation in pencil), one main hand, except for additions by several later hands f. 1r-2r and 94r-96v, decorated initials.

Astronomy, computus and arithmetic: ‘Ars cylindri. Longitudo baculi qui ponitur…’ (1r, added); table: 168 planetary hours (1v, added); ‘Incipit orologium itinerantium sive viatorum’ (2r, added); calendar and computus (3ra-19vb), Sacrobosco, Algorismus (20ra-28v); Sacrobosco, Computus (29ra-59vb); Robertus Anglicus, Quadrans vetus (59vb-67rb), with solar tables 1292-1294 for Paris (67v-68v); Theorica planetarum Gerardi (69ra-79vb); Pseudo-Thebit Bencora, De motu octave spere (79vb-84vb); Ptolemaica (85ra-89va); Thebit Bencora, De recta imaginatione spere et circulorum eius diversorum (89va-91va); Thebit Bencora (?), De quantitate stellarum et planetarum et proportione terre (91va-93vb); star table (94r-94v, added); ‘Tabula magistri Petri de Dacia ad sciendum in quo signo sit Luna’ (95r, added), with canons (95va-96rb, added); astronomical table (96v, added). Blank: 2v.

Bibl. A. M. Bandini, Catalogus Codicum Latinorum Bibliothecae Mediceae Laurentianae, IV, Firenze, 1777, 132-134; F. S. Pedersen, Petri Philomenae de Dacia et Petri de S. Audomaro opera quadrivalia, København, 1983-1984, I, 227-228.


‘Incipit liber Thebit Benchorach de hiis que indigent expositione antequam legatur Almagesti. Equator diei est circulus maior qui describitur super duos polos orbis ― aut propinqui oppositioni erunt retrogradi. Expletus est liber Thebith filii Chore de hiis que indigent expositione antequam legatur Almagesti.’