DESCARTES (René) Discourse of the method to lead his reason well and to look for the truth in the sciences plus the dioptric and the meteors. Revised & corrected in this last edition. Paris, Bobin & Le Gras,1668, in-4, 2 ff - 413 pp.- 15 ff, brown bas. spine, ornamented (very worn binding with mq.). Third edition. Wooden figures in the text.