La Clef des Sciences & des Beaux Arts, ou la Logique.
Paris: Jean Sesaint...et al. 1750. First edition. Contemporary mottled calf. Gilt spine, tooled in compartments, morocco label. Marbled endpapers, edges stained red. A very pretty copy. Small octavo. [xxiv], 238, [2] pp. Cochet (d.1771) was professor of philosophy at the College Mazarin of Paris. His treatise on logic was said.....