Though various methods of producing the hypnotic sleep are in use, the rule is now that, in the course of a hypnotizer's experience, less and less external auxiliaries of any kind are needed, and more and more dependence is placed on the bringing about of mental rapport between the active and passive agencies in hypnotism by persuasion and command. If the hypnotic sleep has once been obtained, usually all that is necessary is a few gentle words, and then the command to sleep. It is at the initial attempts to hypnotize a particular person somewhat refractory to the condition that auxiliaries are needed. In these cases it is often well to tire the eyes of the patient. This is done by directing them to the fingers of the operator held well above the patient's head. After a minute or two of effort the distinct fatigue which occurs may induce forgetfulness of everything else and cause absorption in the single idea of attending only to the hypnotizer's suggestions. This constitutes the beginning of hypnotism. Occasionally the flash of a bright object, or a revolving mirror, may be used, but these are only adjuncts and may be dispensed with entirely if the operator has the patience and the time to give to the subject.

Accessories.—Some operators use a mirror on which a ray of light is cast for the purpose of concentrating the attention and bringing about tiredness of the eye muscles. In so far as it has a more universal application, sight is certainly the best sense to act upon. Other senses may be appealed to, as I suggest later. Instead of a mirror, a polished match-box or pencil-case may be used, but as a rule the less artificiality enters into it and the simpler the procedure, the better. One of the inconveniences of using the flash of a bright object is that occasionally patients who are very susceptible may, after they have had a number of hypnotic experiences, be thrown into a hypnotic condition by the flash of a light in the street, or by the reflection of light from a mirror in their own homes. These conditions of facile auto-hypnotism constitute one of the serious dangers of the practice on susceptible subjects. Whatever good may be accomplished by hypnotism will probably be reached during the first half dozen seances. To proceed with the treatment beyond this, if it is employed at regular and short intervals, is almost sure to result in harm rather than good.{156}

Sensations.—Besides sight, sounds have sometimes been used for the purpose of inducing hypnotism. The ticks of a watch, for instance, placed at a little distance and listened to very intently, have been known to assist in securing the hypnotic state. Sometimes the sound of a gong, or an imitation of a cathedral chime, have been used in the same way. Soft music has also been used by operators with decided advantage. It is necessary that the sounds should be of a kind that do not disturb, but only attract attention to one sensation, and then, as concentration on this is secured, the hypnotic condition results. Practically any other sensation may be used in the same way. Touch is often employed. Mesmer stroked his patients gently, and others have used the same process with advantage. Some of the French workers in hypnotism have claimed that there were special portions of the body the stroking of which was likely to produce this favorable effect. They have called these regions zones hypnogenes—areas that give rise to hypnotic conditions. Strokings of the forehead, of the cheeks, of the hands, are favorite locations for these auxiliary touches. In this, as with regard to sound, the main thing is to concentrate attention on some one sensation without producing disturbing thoughts.

Stroking.—Stroking seems to affect many people and to easily induce a sort of hypnoidal condition. It is done very naturally to a child when one wants to console or encourage or admonish slightly but kindly. In older people it is a familiar gesture among those who think much of one another, and represents a very natural tendency. Even in the midst of physical discomfort its effect is quite soothing, and it is evident that something resembling hypnotism is at work. Evidently, what really happens is a concentration of attention on the sensation thus produced, which concentration prevents distracting thoughts from making themselves felt and permits the words of the one who does the stroking to produce a deeper effect on the mind than would ordinarily be possible. This seems to be nature's method of making suggestion more effective. It has been adopted, quite spontaneously, by many of the pioneers in hypnotism as the result of their observations upon its efficacy. Lloyd Tuckey calls attention to an illustration of this practice, which makes clear its effectiveness and at the same time shows how naturally it suggests itself as a mode of using mental influence. He says:

Among the medical men who have come to watch some of my cases was a gentleman who seemed much struck at seeing the method I adopted with a rather refractory subject. I held his hand and stroked his forehead while at the same time suggesting the symptoms of sleep. The gentleman told me afterward the reason why he was so interested. It appears that he had a few months previously been in attendance on a very severe and protracted case of delirium tremens. The patient could get no sleep, and the doctor was afraid of death from exhaustion. On the third evening he resolved to make a strong effort to produce sleep, and, if necessary, to sit up all night with the patient. He told the man that he would not leave him until he slept, and sitting down by the bedside, he took his hand in one of his own, and with the other gently stroked the forehead. At the same time he talked quietly and reassuringly to him. In less than half an hour he was rewarded by seeing the restlessness entirely cease and the man drop off into a quiet sleep. That sleep, the doctor told me, lasted fourteen hours, and the patient awoke out of it weak, but cured. Manipulation about the head has in many persons a most soporific effect, and several persons have told me that they always become drowsy under their barber's hands.{157}

Drugs.—A number of drugs and related substances have been used as aids to hypnosis, but in nearly all of these cases it is doubtful whether it is true hypnotism that results and whether the suggestions in these states have much therapeutic value. One of the drugs most frequently administered by hypnotists is cannabis indica, which has long been used in the East for a similar purpose. After this, chloroform is most popular. Schrenck-Notzing even ventured to employ alcohol as an aid in hypnosis, and claims that he has succeeded at times in making intoxication pass into the true hypnotic condition. Bernheim and many others of the French school have used chloral and morphine. These substances are, however, liable to great abuse. Whenever they have to be employed it means that the patient is but little susceptible to hypnotic influence. These aids are employed only because hypnotists do not want to confess that a very considerable portion of humanity is not directly susceptible to the hypnotic influence.

Serious harm may be done by the employment of these drugs. A physician, who hoped that he would be able to overcome a drug addiction that had been the bane of his existence for a long while, went to a well-known hypnotist physician with the idea that perhaps the miracle of hypnotism would be worked in his case. He was one of these flighty mortals whom it is extremely difficult to have fix their minds upon any one idea for a definite time. As it was impossible to bring him into anything like a hypnotic condition by ordinary means, a large dose of chloral was administered. He already had an idea that his heart had been affected by his previous drug-taking habit, but the chloral was administered to him before he realized what it was. When he came out of the sleep it induced, he was in an agony of solicitude and anxiety lest his heart should have been further hurt by the chloral. He went back for no more doses of that kind of hypnotism.

The use of drugs seems to be a confession of failure to secure true hypnotism, so that it is doubtful whether their employment is justified. Suggestions received while in the more or less comatose state induced by drugs, instead of having a strengthening effect on the patient's will, rather tend to produce the idea of the impossibility of effectively using his own will, or even exercising his will when helped, as he supposes, by the will of the operator. The real value of hypnotism consists in the concentration of mind upon a particular idea without any distractions, which enables the subject to make firm resolutions and then to have his mind help his body as much as possible by directing his energy to the accomplishment of one end. When drugs are employed, they have a diffusive rather than a concentrating influence, so that the real purpose of hypnotism is entirely missed.