So much for the movements. But how about the raps? How about those mysterious tappings which come from the very heart of the table, as eloquent of the preternatural as those immortal taps heard by Poe ere the raven stepped into his chamber? I should be more impressed by these taps if I were not capable of manufacturing them myself _ad lib._ without detection, by secretly manipulating the ball of my thumb. One is therefore justified in assuming that, where these raps are not produced by conscious fraud, they are the involuntary result of the same motions that produced them voluntarily. Even wood has a certain elasticity, and an imperceptible increase followed by an imperceptible relaxation of pressure on the surface of the table will alter the tension of the wood, the molecules of which in springing back to their prior position will emit a creak or a tap, just as a piece of extended elastic will when let go again. Both the raps and the movements, then, are in essence phenomena of the same order: simple results of muscular pressure, conscious, sub-conscious, or unconscious.
It now only remains to explain the answers themselves, to account not only for their almost invariably logical form, but also for their occasionally astonishing content. For the table is not infrequently wiser than anybody in the room; also it knows the past and is ready to predict the future.
The whole thing is really an excellent object-lesson in Psychology. For the solution is obvious. The table being unconscious, _you answer yourself_--you not only produce the raps and movements, but you regulate them.
The connection between mind and body is, it seems to me, admirably illustrated by table-turning. According to the latest philosophic view, the connection itself defies human comprehension. It is simply a case of _non possumus intelligere_. But the connection itself may be expressed thus: No idea or feeling without physical disturbance, no physical disturbance without feeling or idea. Mind and body are as related as the tune to the violin-string. Every state of mind tends to set up nervous vibration, and every nervous vibration tends to set up a state of mind. In either case the tendency may be, and usually is, counteracted. The average member of a spiritualistic circle cannot prevent the thought in his brain taking on bodily expression to the extent of a muscular contraction stimulating the very sensitive tips of the fingers. You cannot think of a joke or see the humour of anything without wanting to smile, though you may suppress your smile in obedience to other considerations. Nor can you put your features into smiling position, without experiencing a latent sense of amusement, though you would not know what you were smiling at. But if six cool scientific intellects, acquainted with the tricks of their own organisms and determined to dissever thought from motion, were to sit round a table, they might sit till doomsday without the "spirit" turning up. This is what the spiritualists mean by unsympathetic persons, persons obnoxious to the spirits, persons with antipathetic auras, and all the rest of the jargon. But six intellects taken at random, being anything but cool and scientific, are not able to prevent their ideas passing over into action in the shape of muscular twitches; though if even the unscientific were to look up at the ceiling and forget all about the table, the table would probably forget to move. Now the majority of the replies of the table deal with matters actively present to the consciousness of at least one of the six owners of the superimposed hands. When the table raps out something known only to this one person, and the startled person admits that the table is right, an uncanny feeling is produced; the table seems at least to be a thought-reader, and on this wave of astonishment the hypothesis of "spirits" rides up triumphantly. When the topic is one of which nobody knows anything--_e.g._, whether the supposed spirit is a man or woman--chance, or a vague idea floating up in the mind of one of the party, determines the reply.