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DESCARTES, RENÉ. Les Principes de la Philosophie. 20 engraved plates. [62], 420 [i. e., 486], [2] pages, including engraved additional title and errata leaf at end. 4to, 202x153 mm, modern white vellum boards with red and green morocco lettering pieces; early owner's inscription on title, occasional minor marginal fingersoiling, blank upper outer corner of errata leaf restored. Paris: Pierre Deshayes for Henry Le Gras, 1647
first edition in french of Descartes's 1644 Principia philosopiae, an exposition of his system of physics. Guibert, pages 119-21 (this edition); Norman 622 (original edition).
