A grammar text, in the style of Alexander of Villa Dei's doctrinale, on deponent verbs (suspicor et meditor et reor: istis arbitror addens / hec infinitum deposcunt vel sibi quartum opinor), with a literal commentary. The host volume has on the title page a 1626 ex libris of a parish priest, and a possession note from the Franciscan Convent of Frauenfeld. The last page also has the name "Magister Ioannes Greiff". The front pastedown has the Rheinau ownership note "Sub Abb. Bonav. II 1787".

Host Volume Information:
Author: Osualdus de Lasco [15. Jh]
Title: Sermones de sanctis Biga salutis intitulati / [Osualdus de Lasco]
Imprint: Hagenau : Heinrich Gran für Johann Rynman, 14. juli 1499
Extent: [374] Bl. ; 21 cm (4°)
(Hain 9055; BSB-Ink O-98)