Contents: ff. 68r-73r: A compilation of practical geometry written in the 9th or 10th century, generally called Geometria incerti auctoris since Nicolaus Bubnov's edition (see: Nicolaus Bubnov, Gerberti postea Silvestri II papae Opera Mathematica (972-1003) (Berlin: R. Friedländer and Sohn), pp...