reached by the right hand of the man concealed, if we suppose his right arm brought across the breast. The motions of the head and eyes, and of the right arm of the figure, as well as the sound _echec_ are produced by other mechanism in the interior, and actuated at will by the man within. The whole of this mechanism--that is to say all the mechanism essential to the machine--is most probably contained within the little cupboard (of about six inches in breadth) partitioned off at the right (the spectators' right) of the main compartment. [Footnote 3: Sir David Brewster supposes that there is always a large space behind this drawer even when shut--in other words that the drawer is a "false drawer" and does not extend to the back of the box. But the idea is altogether untenable. So commonplace a trick would be immediately discovered--especially as the drawer is always opened to its full extent, and an opportunity thus afforded of comparing its depth with that of the box.] In this analysis of the operations of the Automaton, we have purposely avoided any allusion to the manner in which the partitions are shifted, and it will now be readily comprehended that this point is a matter of no importance, since, by mechanism within the ability of any common carpenter, it might be effected in an infinity of different ways, and since we have shown that, however performed, it is performed out of the view of the spectators. Our result is founded upon the following _observations_ taken during frequent visits to the exhibition of Maelzel.[4] [Footnote 4: Some of these _observations_ are intended merely to prove that the machine must be regulated _by mind_, and it may be thought a work of supererogation to advance farther arguments in support of what has been already fully decided. But our object is to convince, in especial, certain of our friends upon whom a train of suggestive reasoning will have more influence than the most positive _a priori_ demonstration.] 1. The moves of the Turk are not made at regular intervals of time, but accommodate themselves to the moves of the antagonist--although this point (of regularity) so important in all kinds of mechanical contrivance, might have been readily brought about by limiting the time allowed for the moves of the antagonist. For example, if this limit were three minutes, the moves of the Automaton might be made at any given intervals longer than three minutes. The fact then of irregularity, when regularity might have been so easily attained, goes to prove that regularity is unimportant to the action of the Automaton--in other words, that the Automaton is not _a pure machine_.