Some new Evidence on twelfth century Logic

IT is well known that the art of logic (logica or diale(c)tica) knew a remarkable flourishing period during the twelfth century. In the first half of the century its main centres in Paris were: the School of Notre Dame^I, of St. Victor², of the Petit Pont³ and of Mont Ste Geneviève⁴. The present paper aims to offer some new evidence from the manuscripts on the teaching of logic as given in the School of Mont Ste