DUCHENNE DE BOULOGNE. MECANISME DE LA PHYSIONOMIE HUMAINE OU ANALYSE ELECTRO-PHYSIOLOGIQUE DE L'EXPRESSION DES PASSIONS... Paris, Baillière, 1876. In-4° of 12-67-1bl.-from V to XI-1bl.-196 pages, half burgundy morocco, spine ribbed (period binding). A renowned work, this second edition contains the original proofs of the famous photographs taken by Duchesne de Boulogne himself. It is illustrated with a frontispiece showing the author experimenting on a subject and 9 plates showing 144 FIGURES OF FACIAL EXPRESSIONS triggered by electrical stimulation. The pagination jumps from 125 to 129 without missing. Scattered brown spots.