Schwenger, August Wilhelm. Mémoires sur les aveugles, sur la vue et la vision; suivis de la description d`un telegraphe tres simple. 5 Bl., 207 S. With stung frontispiece, 2 copper plates and woodcut illustration. 19.5 x 12.5 cm. Modern half-line ribbon with gold stamped title. Paris, King, Didot and Fox respectively Amsterdam, Guérin, 1800. First edition of the treatise on the topics of blindness and vision of August Wilhem Schwenger (1773-1801), born in Rheda, Westphalia. In addition to his own studies, he also deals with the research results of Bew, Blacklock, Blumenbach, Bougies, Bouguer, Chappe, Cheselden, Daviel, Hauy, Janin, Laval, Lichtenberg and others.