The hypnotic state is divided by Doctor Luys into five phases of intensity: somnambulism, fascination, catalepsy, lethargy, and hypo-lethargy, with various intermediary phases which have not yet been tabulated. The hypnotic state in one or other of its phases is produced in the subject or patient in two ways; by word of command or by the use of the rotative mirror. The rotative mirror is often used where hypnotic influence is first applied to an individual. This mirror much resembles that used by bird catchers for snaring larks. It is composed of four arms, overlaid with bright, polished metal. The arms revolve by clockwork on a pivot, at a tremendous rate of speed. The patient is seated in a high-backed chair with his back to the light, which shines full on the mirror, and is bidden to keep his eyes fixed upon it, and simultaneously to desire to be sent to sleep. The clockwork sets the mirror in rotary motion with a dazzling effect. Sleep is not invariably produced. Many persons are refractory; but, as a rule, in about twenty per cent. of the cases the operation is successful, and after a period varying from five to twenty minutes the patient is seen to drop to sleep. [Illustration: REPULSIVE EFFECT OF THE SOUTH POLE OF A MAGNET.] “The eyes,” says a writer on the subject, “are first attracted by the rays of light which flash from the wings of the mirror, then little by little, and at the end of a period which varies according to the temperament of the patient, a kind of fascination is produced, the lids get tired and imperceptibly close, the head falls back, and the patient sleeps a sleep which seems natural, but which is really one of the first phases of the hypnotic sleep.” In other cases, that is to say, in the case of patients who are more predisposed, a slight shock is manifested during the state of fascination, due, no doubt, to the sudden contraction of some muscle or system of muscles, and the patient falls into a deep sleep, breathing hard. He is then completely insensible, and apt for the reception of suggestion, having passed quickly through the several stages of the hypnotic sleep, sometimes to the last. In most cases, however, where the doctor has to do with subjects who have often been hypnotized, the simple word of command, without passes or gestures of any kind, suffices. With these he has but to say, “Go to sleep,” and they fall at once into a hypnotic state of greater or lesser profundity. Doctor Luys is, however, the sole possessor of hypnotism I have seen who has this power; and both Charcot and his assistant, Doctor Encausse, as well as Colonel Rachas, are obliged to enforce their commands with certain gestures of the hands and influence of the eyes. THE DANGER OF HYPNOTISM.