(Claude-Nicolas) Le Cat, Traité des sensations et des passions en général, et des sens en particulier. Followed by: La Théorie de l'ouïe: supplément à cet article du Traité des sens. Paris, Vallat-la-Chapelle, 1767-1768. 3 volumes. XCV + 262 ; LVI-(201 to 684) + (4); XXXII + 320 pages. With one portrait frontispiece, two engraved frontispieces and 34 engraved plates, most folding. Also some in-text illustrations. In contemporary calf, showing some slight wear at head of two spines. A lovely set. The paper is thick and creamy and the interior is excellent. The multiply-folding plates are superb, with one or two slightly torn on the crease. FIRST edition thus, of the Treatise on physiology here in three volumes. Complete. A well-known and importance set of texts, particularly the third volume. See Penny Gouk and Ingrid Sykes, ‘Hearing Science in Mid-Eighteenth-Century Britain and France’, Journal of the History of Medicine and Allied Sciences 66/4 (2011): 507-45. Ruben Verwaal, ‘Fluid Deafness… early modern Europe’, Medical History 65/4 (20210: 366-83.