Can we by any possibility do this? To begin with, let me tell you of a simple experiment that I have witnessed. I once knew a man who had learned to control the circulation of his blood by his conscious will. I have seen him lay his two hands on the table, both of the same color, and without moving the hands, cause one hand to turn red and the other to turn pale. And, obviously, so far as this man is concerned, the problem of counter-irritants has been solved. He is a mental mustard plaster. And what was done by this man's own will can be done to others in many ways. The most obvious is a device which we call hypnotism. This is a kind of sleep which affects only the conscious control of the body, but leaves all the senses awake. In this hypnotic sleep or "trance" we discover that the subconscious mind is a good deal like the Henry Dubb of the Socialist cartoons; it is faithful and persistent, very strong in its own limited field, but comically credulous, willing to believe anything that is told it, and to take orders from any one who climbs into the seat of authority. You have perhaps attended one of the exhibitions which traveling hypnotists are accustomed to give in country villages. You have seen some bumpkin brought upon the stage and hypnotized, and told that he is in the water and must swim for his life, or that he is in the midst of a hornets' nest, or that his trousers are torn in the seat--any comical thing that will cause an audience to howl with laughter. These facts were first discovered nearly a hundred and fifty years ago by a French doctor named Mesmer. He was a good deal of a charlatan, and would not reveal his secrets, and probably the scientific men of that time were glad to despise him, because what he did was so new and strange. There is a certain type of scientific mind which sits aloft on a throne with a framed diploma above its head, and says that what it knows is science and what it does not know is nonsense. And so "mesmerism" was left for the quacks and traveling showmen. But half a century later a French physician named Liebault took up this method of hypnotism, without all the fakery that had been attached to it. He experimented and discovered that he could cure not merely phobias and manias, fixed ideas, hysterias and melancholias; he could cure definite physical diseases of the physical body, such as headache, rheumatism, and hemorrhage. Later on two other physicians, Janet and Charcot, developed definite schools of "psychotherapy." They rejected hypnotism as in most cases too dangerous, but used a milder form which is known as "hypnoidization." You would be surprised to know how many ailments which baffle the skill of medical men and surgeons yield completely to a single brief treatment by such a mental specialist.