Some of these methods continued to be employed by the successors of Mesmer and De Puysegur, the sense of touch being the principal adjuvant, though Mesmer employed also the sense of hearing. Braid seems to have been the first to realize that the sense of sight could be used effectively, or perhaps that the tiring of the muscle sense might well serve as a point for the concentration of attention. He used the flash of a light from some bright object or tired the eye muscles by having the patient look upward at some object brought near so as to require convergence of vision. His methods were imitated by most of the hypnotizers of the nineteenth century. Liebault and Bernheim, at Nancy, employed them regularly, and they were used in the investigations at the Salpetriere. It was found, however, that after a patient had been once hypnotized, all that was needed was a word of command or a definite suggestion, and the hypnotic state recurred. Further experience showed also that the original hypnotic phenomena might, in most cases, be secured very simply by word-suggestion to the patient, though some individuals required persistent efforts in the application of several methods {155} to secure the concentration of mind on a single idea or set of ideas that is the essence of hypnotism. By most serious hypnotists, especially those who use hypnotism for therapeutic purposes, all the rubbings and manipulations are now either completely eliminated, or are used only under special circumstances. The important element of the operator's influence consists in obtaining the complete confidence of the subject in the operator's power to control his intelligence for the time being; getting the subject to resign himself completely, with absolute assurance that his trust will be for his good, and can by no means result in harm. Without this attitude of mind on the part of the subject, anything like real hypnotism is impossible. Even with this, only a slight degree of the hypnotic condition may be secured in certain people, but the majority have a distinct susceptibility to it. PRESENT DAY METHODS OF HYPNOTIZATION