Now let us cite some evidence. Lafontaine, a professional hypnotist, gives some interesting facts. He says that public hypnotic entertainments usually induce a great many of the audience to become amateur hypnotists, and these experiments may cause suffocation. Fear often results in congestion, or a rush of blood to the brain. “If the digestion is not completed, more especially if the repast has been more abundant than usual, congestion may be produced and death be instantaneous. The most violent convulsions may result from too complete magnetization of the brain. A convulsive movement may be so powerful that the body will suddenly describe a circle, the head touching the heels and seem to adhere to them. In this latter case there is torpor without sleep. Sometimes it has been impossible to awake the subject.” A waiter at Nantes, who was magnetized by a commercial traveler, remained for two days in a state of lethargy, and for three hours Dr. Foure and numerous spectators were able to verify that “the extremities were icy cold, the pulse no longer throbbed, the heart had no pulsations, respiration had ceased, and there was not sufficient breath to dim a glass held before the mouth. Moreover, the patient was stiff, his eyes were dull and glassy.” Nevertheless, Lafontaine was able to recall this man to life. Dr. Courmelles says: “Paralysis of one or more members, or of the tongue, may follow the awakening. These are the effects of the contractions of the internal muscles, due often to almost imperceptible touches. The diaphragm—and therefore the respiration—may be stopped in the same manner. Catalepsy and more especially lethargy, produce these phenomena.” There are on record a number of cases of idiocy, madness, and epilepsy caused by the unskillful provoking of hypnotic sleep. One case is sufficiently interesting, for it is almost exactly similar to a case that occurred at one of the American colleges. The subject was a young professor at a boys’ school. “One evening he was present at some public experiments that were being performed in a tavern; he was in no way upset at the sight, but the next day one of his pupils, looking at him fixedly, sent him to sleep. The boys soon got into the habit of amusing themselves by sending him to sleep, and the unhappy professor had to leave the school, and place himself under the care of a doctor.” Dr. Ernest Hart gives an experience of his own which carries with it its own warning. Says he: