Letters on natural magic, addressed to Sir Walter Scott (1832)
Brewster, David, 1781-1868 · London : John Murray · leaf 294
270 LETTERS ON NATURAL MAGIC. chess-board, eighteen inches square, and bearing the usual number of pieces is placed before the figure. Fig. 61. Fig. 62. … The exhibitor then announces to the spectators his intention of shewing them the mechanism of the automaton. For this purpose he unlocks the door A, Fig. 61, and exposes to view a small cupboard lined with black or dark coloured cloth, and contain- ing cylinders, levers, wheels, pinions, and…
Scientific recreations · Magic
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.