 Since the logic of the Dialectica is based on Boethius’ commentaries and monographs, we find in it a treatise on categorical sentences and categorical syllogisms (Tractatus II), and another on hypothetical sentences and hypothetical syllogisms (Tractatus IV). But neither of these discussions is very extensive. Taken together, they are shorter than the discussion of topical inferences, which indicates that Abelard was most interested in developing a logic for sentences (Green-Pedersen 1984 and Martin 1987). His presentation of syllogistic is condensed but highly original. It reveals that he was not able to study the text of Aristotle’s Prior Analytics in any detail. He must have seen it, but he cannot have had access to a copy himself.