London: John Murray, 1834. Second edition. 16mo., viii, 351 pp., over 80 text illustrations. Printed cloth over boards. The binding has been expertly rebacked with the original printed spine laid-down, new endpapers were added. Very good. Item #26613
Written shortly before the introduction of photography, this book discusses vision, optics, optical illusions, production of sound, etc. There are two unusual engraved portraits which each have a bound-in illustrated movable tab that covers the lower half of the face and changes the direction of the face, the eyes remaining static. Reprinted from the 1832 first edition. The Family Library, No. XXXIII.