9. When, in exhibiting the interior of the box, Maelzel has thrown open the door No. I, and also the door immediately behind it, he holds a lighted candle at the back door (as mentioned above) and moves the entire machine to and fro with a view of convincing the company that the cupboard No. 1 is entirely filled with machinery. When the machine is thus moved about, it will be apparent to any careful observer, that whereas that portion of the machinery near the front door No. 1, is perfectly steady and unwavering, the portion farther within fluctuates, in a very slight degree, with the movements of the machine. This circumstance first aroused in us the suspicion that the more remote portion of the machinery was so arranged as to be easily slipped, _en masse, _from its position when occasion should require it. This occasion we have already stated to occur when the man concealed within brings his body into an erect position upon the closing of the back door. 10. Sir David Brewster states the figure of the Turk to be of the size of life—but in fact it is far above the ordinary size. Nothing is more easy than to err in our notions of magnitude. The body of the Automaton is generally insulated, and, having no means of immediately comparing it with any human form, we suffer ourselves to consider it as of ordinary dimensions. This mistake may, however, be corrected by observing the Chess-Player when, as is sometimes the case, the exhibiter approaches it. Mr. Maelzel, to be sure, is not very tall, but upon drawing near the machine, his head will be found at least eighteen inches below the head of the Turk, although the latter, it will be remembered, is in a sitting position.