Note 2805 — Chapter XXX · GERBERT AND THE INTRODUCTION OF ARABIC ASTROLOGY

This treatise, in which Hermann expresses amazement that Bede has so underestimated the duration of the moon, immediately precedes the one on the astrolabe in BN nouv. acq. 229, a German MS of the twelfth century, fols. 17r-19r (formerly pp. 265-269). After the treatise on the astrolabe follows a third work by Hermann, “de quodam horologio,” fols. 25v-28r. Then follows the treatise in twenty-one chapters on the astrolabe.

These citations alone are sufficient to demonstrate the error of Clerval’s assertion: (1891), 165. “On ne peut invoquer aucune preuve sérieuse en faveur d’Hermann Contract. Jacques de Bergame et Trithème ... sont les premiers qui aient attribué au moine de Constance les traités en question.”