Colophon: ... Lugduniq; impressum per Theobaldum Paganum. D.XLII.

Includes the Latin text of Tahãfut al=Tahãfut in the translation from the Arabic attributed to Kalonymus ben Kalonymus (cf. Steinschneider, Die europäischen Ubersetzugen, p. 53), a treatise in defence of the Greek system of philosophy, composed as a reply to al-Ghazzãli's work entitled Tahãfut al-falãsifah. The codicil is an attack on a work by Joannes de Janduno.