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


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.

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

Vatican, Biblioteca Apostolica Vaticana, Reg. lat. 1012

s. XIII or XIV.


Queen Christina of Sweden.

Parchment, 74 f., a single hand.

Astronomy and mathematics: Ptolemaica (1r-73r); Thebit Bencora, De figura sectore, tr. Gerard of Cremona, excerpt ‘Iam vero ostendimus in modo secundo…’ (73r-73v); Apollonius, Liber de pyramidibus (74r-74v, fragment); added notes on geometry (74v).


H. Zepeda, The First Latin Treatise on Ptolemy’s Astronomy: The Almagesti minor (c. 1200), Turnhout, 2018, 65-66.


‘Omnium recte phylosophantium verisimilibus coniecturis credibilibus tenebrarum sic se habent. Explicit liber sextus. Amen dico amen. Totus liber continet 156 conclusiones.’

= Almagesti minor (C.1.3)

, with f. 48-59 (containing VI.1-VI.23) to be read between f. 71 and 72. Short marginal notes by the scribe f. 1v-2r, 32r-32v, 38v and 47r. Glosses by a later hand f. 4r and 5v.