But these objections do not apply to magic proper. Magic seems to consist mainly in the control which mind may exceptionally exercise over matter. In hypnotism, the subject abjectly believes and obeys the operator. If he be told that he cannot step across a chalk mark on the floor, he cannot step across it. He dissolves in tears or explodes with laughter, according as the operator tells him he has cause for merriment or tears: and if he be assured that the water he drinks is Madeira wine or Java coffee, he has no misgiving that such is not the case. To say that this state of things is brought about by the exercise of the operator's will, is not to explain the phenomenon, but to put it in different terms. What is the will, and how does it produce such a result? Here is a man who believes, at the word of command, that the thing which all the rest of the world calls a chair is a horse. How is such misapprehension on his part possible? our senses are our sole means of knowing external objects: and this man's senses seem to confirm--at least they by no means correct--his persuasion that a given object is something very different. Could we solve this puzzle, we should have done something towards gaining an insight into the philosophy of magic. We observe, in the first place, that the _rationale_ of hypnotism, and of trance in general, is distinct from that of memory and of imagination, and even from that of dreams. It resembles these only in so far as it involves a quasi-perception of something not actually present or existent. But memory and imagination never mislead us into mistaking their suggestions for realities: while in dreams, the dreamer's fancy alone is active; the bodily faculties are not in action. In trance, however, the subject may appear to be, to all intents and purposes, awake. Yet this state, unlike the others, is abnormal. The brain seems to be in a passive, or, at any rate, in a detached condition; it cannot carry out or originate ideas, nor can it examine an idea as to its truth or falsehood. Furthermore, it cannot receive or interpret the reports of its own bodily senses. In short, its relations with the external world are suspended: and since the body is a part of the external world, the brain can no longer control the body's movements.