Bishop, the so-called mind-reader, whose exhibitions attracted much attention in London and New York some years ago, confessed that his feats were accomplished mainly through muscle reading. He would permit a committee to select a book in a library in a certain house, and even a particular page of {195} that book, and then, blindfolded, sitting with the committee in a carriage with his hand on the forehead and the arm of one of the committee, he would direct just where the carriage should be driven and would, while always continuing his contact with the member of the committee, go to the particular house and room, select the special book, and eventually find the page. There was no opportunity for collusion in some of these feats. The most startling things were often accomplished by the system of forcing a choice which prestidigitateurs use in order to compel the taking of the particular card by suggestion (though all the time they seemed to be leaving absolute liberty of selection to the person), but there was much, besides this, required to accomplish what he did. He said that there were always involuntary muscle movements, little starts and tremors that guided him in his work. Other exhibitors have been able to use this to a considerable extent, though not with Bishop's success. That our thoughts can be read in our muscle system is interesting and valuable confirmation of the unconscious tendency of ideas to affect the body. When a single idea occupies the consciousness it will, some psychologists insist, necessarily act itself out unless some distracting thought prevents it. We know how difficult it is to stand at the edge of a height, say at the brink of a waterfall or on the cornice of a high building, or to look down a mine or elevator shaft, because the thought comes to us, how dreadful it would be to plunge over. As a consequence of this insistent idea taking possession of our consciousness, we have the sense of falling, we become tremulous and have to withdraw, or we would actually fall, or find in ourselves a tendency to throw ourselves over. There are persons who cannot even sit in the front row of a balcony because of the constant effort required to neutralize the suggestion that they may fall or throw themselves over its railing. Curious sensations become associated with this idea--a feeling of numbness and tingling in the back, sometimes a girdle feeling, sometimes a sense of suffocation. All of these are due to the concentration of attention on a single idea and its suggestions.