the Automaton upon its first introduction into the presence of the spectators. Maelzel now informs the company that he will disclose to their view the mechanism of the machine. Taking from his pocket a bunch of keys he unlocks with one of them, door marked ~ in the cut above, and throws the cupboard fully open to the inspection of all present. Its whole interior is apparently filled with wheels, pinions, levers, and other machinery, crowded very closely together, so that the eye can penetrate but a little distance into the mass. Leaving this door open to its full extent, he goes now round to the back of the box, and raising the drapery of the figure, opens another door situated precisely in the rear of the one first opened. Holding a lighted candle at this door, and shifting the position of the whole machine repeatedly at the same time, a bright light is thrown entirely through the cupboard, which is now clearly seen to be full, completely full, of machinery. The spectators being satisfied of this fact, Maelzel closes the back door, locks it, takes the key from the lock, lets fall the drapery of the figure, and comes round to the front. The door marked I, it will be remembered, is still open. The exhibiter now proceeds to open the drawer which lies beneath the cupboards at the bottom of the box—for although there are apparently two drawers, there is really only one—the two handles and two key holes being intended merely for ornament. Having opened this drawer to its full extent, a small cushion, and a set of chessmen, fixed in a frame work made to support them perpendicularly, are discovered. Leaving this drawer, as well as cupboard No. 1 open, Maelzel now unlocks door No. 2, and door No. 3, which are discovered to be folding doors, opening into one and the same compartment. To the right of this compartment, however, (that is to say the spectators’ right) a small division, six inches wide, and filled with machinery, is partitioned off. The main compartment itself (in speaking of that portion of the box visible upon opening doors 2 and 3, we shall always call it the main compartment) is lined with dark cloth and contains no machinery whatever beyond two pieces of steel, quadrant-shaped, and situated one in each of the rear top corners of the compartment. A small protuberance about eight inches square, and also covered with dark cloth, lies on the floor of the compartment near the rear corner on the spectators’ left hand. Leaving doors No. 2 and No. 3 open as well as the drawer, and door No. I, the exhibiter now goes round to the back of the main compartment, and, unlocking another door there, displays clearly all the interior of the main compartment, by introducing a candle