The object of this passage is to enable the reader to see, more easily, how it is that the watchful observer is deceived into believing that a thing is so, when in reality it is not, and vice versa; and also to give an idea of the various methods employed by the medium in order to accomplish his results. I must first of all call the reader’s attention to one or two rules which every conjurer learns at the commencement of his study, and which he learns to apply so constantly that it becomes second nature to him. The first is: Never let the eyes rest on the hand that is performing the “sleight,” but always on the other hand, or on some object on the table or elsewhere, as this will have a tendency to draw the eyes of the audience to that point also. The sitters or audience will always look at the point closely watched by the magician—their eyes have a tendency to follow his, and wherever he looks, there will the onlooker look also. Needless to say, the magician makes use of this fact, and many tricks and illusions are dependent upon it for their successful accomplishment. Whenever the magician or medium looks intently at one hand, therefore, the other hand should be watched, as it is a sure sign that that is the hand which is performing the trick.