This subject has been investigated by such authorities as Weir Mitchell and Hammond, and medical literature is full of interesting cases, many differing in the physiologic phenomena exhibited; some of the most striking of these will be quoted. Van Kasthoven of Leyden reports a strange case of a peasant of Wolkwig who, it is alleged, fell asleep on June 29, 1706, awakening on January 11, 1707, only to fall asleep again until March 15th of the same year. Tuke has resurrected the remarkable case reported by Arnold of Leicester, early in this century. The patient's name was John Engelbrecht. This man passed into a condition of catalepsy in which he heard everything about him distinctly, but in his imagination he seemed to have passed away to another world, this condition coming on with a suddenness which he describes as with "far more swiftness than any arrow can fly when discharged from a cross-bow." He also lost his sensation from the head downward, and recovered it in the opposite direction. At Bologna there was observed the case of a young female who after a profound grief had for forty-two successive days a state of catalepsy lasting from midday to midnight. Muller of Lowenburg records a case of lethargy in a young female, following a sudden fright in her fourteenth year, and abrupt suppression of menstruation. This girl was really in a sleep for four years. In the first year she was awake from one minute to six hours during the day. In the second and third years she averaged four hours wakefulness in ninety-six hours. She took very little nourishment and sometimes had no bowel-movement for sixteen days. Scull reports the history of a man of twenty-seven suffering with incipient phthisis, who remained bedridden and in a state of unconsciousness for fifteen months. One day while being fed he spoke out and asked for a glass of water in his usual manner, and so frightened his sister that she ran from the room. The man had remembered nothing that had occurred during the fifteen months, and asked who was president and seemed eager for news. One curious fact was that he remembered a field of oats which was just sprouting about the time he fell in the trance. The same field was now standing in corn knee-high. After his recovery from the trance he rapidly became worse and died in eighteen months. There is a record of a man near Rochester, N.Y., who slept for five years, never waking for more than sixteen hours at a time, and then only at intervals of six weeks or over. When seized with his trance he weighed 160, but he dwindled down to 90 pounds. He passed urine once or twice a day, and had a stool once in from six to twenty days. Even such severe treatment as counter-irritation proved of no avail. Gunson mentions a man of forty-four, a healthy farmer, who, after being very wet and not changing his clothes, contracted a severe cold and entered into a long and deep sleep lasting for twelve hours at a time, during which it was impossible to waken him. This attack lasted eight or nine months, but in 1848 there was a recurrence accompanied by a slight trismus which lasted over eighteen months, and again in 1860 he was subjected to periods of sleep lasting over twenty-four hours at a time. Blaudet describes a young woman of eighteen who slept forty days, and again after her marriage in her twentieth year she slept for fifty days; it was necessary to draw a tooth to feed her. Four years later, on Easter day, 1862, she became insensible for twelve months, with the exception of the eighth day, when she awoke and ate at the table, but fell asleep in the chair. Her sleep was so deep that nothing seemed to disturb her; her pulse was slow, the respirations scarcely perceptible, and there were apparently no evacuations.
Weir Mitchell collected 18 cases of protracted sleep, the longest continuing uninterruptedly for six months. Chilton's case lasted seventeen weeks. Six of the 18 cases passed a large part of each day in sleep, one case twenty-one hours, and another twenty-three hours. The patients were below middle life; ten were females, seven males, and one was a child whose sex was not given. Eight of the 18 recovered easily and completely, two recovered with loss of intellect, one fell a victim to apoplexy four months after awakening, one recovered with insomnia as a sequel, and four died in sleep. One recovered suddenly after six months' sleep and began to talk, resuming the train of thought where it had been interrupted by slumber. Mitchell reports a case in an unmarried woman of forty-five. She was a seamstress of dark complexion and never had any previous symptoms. On July 20, 1865, she became seasick in a gale of wind on the Hudson, and this was followed by an occasional loss of sight and by giddiness. Finally, in November she slept from Wednesday night to Monday at noon, and died a few days later. Jones of New Orleans relates the case of a girl of twenty-seven who had been asleep for the last eighteen years, only waking at certain intervals, and then remaining awake from seven to ten minutes. The sleep commenced at the age of nine, after repeated large doses of quinin and morphin. Periods of consciousness were regular, waking at 6 A.M. and every hour thereafter until noon, then at 3 P.M., again at sunset, and at 9 P.M., and once or twice before morning. The sleep was deep, and nothing seemed to arouse her. Gairdner mentions the case of a woman who, for one hundred and sixty days, remained in a lethargic stupor, being only a mindless automaton. Her life was maintained by means of the stomach tube. The Revue d'Hypnotisme contains the report of a young woman of twenty-five, who was completing the fourth year of an uninterrupted trance. She began May 30, 1883, after a fright, and on the same day, after several convulsive attacks, she fell into a profound sleep, during which she was kept alive by small quantities of liquid food, which she swallowed automatically. The excretions were greatly diminished, and menstruation was suppressed. There is a case reported of a Spanish soldier of twenty-two, confined in the Military Hospital of San Ambrosio, Cuba, who had been in a cataleptic state for fourteen months. His body would remain in any position in which it was placed; defecation and micturition were normal; he occasionally sneezed or coughed, and is reported to have uttered some words at night. The strange feature of this case was that the man was regularly nourished and increased in weight ten pounds. It was noted that, some months before, this patient was injured and had suffered extreme depression, which was attributed to nostalgia, after which he began to have intermittent and temporary attacks, which culminated as related. Camuset and Planes in January, 1896, mention a man who began to have grand hallucinations in 1883. In March, 1884, he exhibited the first signs of sleep, and on March 10th it was necessary to put him to bed, where he remained, more or less continuously for three months, awakening gradually, and regaining his normal condition by the middle of June. He was fed by hand three times daily, was placed on a night-chair, and with one exception never evacuated in bed. Five months afterward he showed no signs of relapse. The latest report of a "sleeping girl" is that of the young Dutch maiden, Maria Cvetskens, of Stevenswerth, who on December 5, 1895, had been asleep for two hundred and twenty days. She had been visited by a number of men of good professional standing who, although differing as to the cause of her prolonged sleep, universally agreed that there was no deception in the case. Her parents were of excellent repute, and it had never occurred to them to make any financial profit out of the unnatural state of their daughter.
Hypnotism.—The phenomenon of hypnotism was doubtless known to the Oriental nations, and even to the Greeks, Romans, and Egyptians, as well as to other nations since the downfall of the Roman Empire. "The fakirs of India, the musicians of Persia, the oracles of Greece, the seers of Rome, the priests and priestesses of Egypt, the monastic recluses of the Middle Ages, the ecstatics of the seventeenth and early part of the eighteenth century exhibited many symptoms that were, and are still, attributed by religious enthusiasts to supernatural agencies, but which are explainable by what we know of hypnotism. The Hesychasts of Mount Athos who remained motionless for days with their gaze directed steadily to the navel; the Taskodrugites who remained statuesque for a long period with the finger applied to the nose; the Jogins who could hibernate at will; the Dandins of India who became cataleptoid by 12,000 repetitions of the sacred word Om; St. Simeon Stylites who, perched on a lofty pillar, preserved an attitude of saint-like withdrawal from earthly things for days; and even Socrates, of whom it was said that he would stand for hours motionless and wordless—all these are probable instances of autohypnotism." (Gray.)
Hypnotism is spoken of as a morbid mental state artificially produced, and characterized by perversion or suspension of consciousness, and abeyance of volition; a condition of suggestibility leads the patient to yield readily to commands of external sense-impressions, and there is intense concentration of the mental faculties upon some idea or feeling. There are several methods of inducing hypnosis, one of which is to give particular direction to the subject's imagination by concentrating the attention upon an arbitrary point, or by raising an image of the hypnotic state in the patient's mind. The latter is most readily induced by speech. Faria formerly strained the attention of the subject as much as possible, and suddenly called out, "Sleep!" This method has been used by others. Physical methods consist of certain stimuli of sight, hearing, and touch. Taste and smell have generally given negative results. Fixation of the gaze has been the most successful, but the ticking of a watch has been used. According to Moll, among uncivilized races particular instruments are used to produce similar states, for example, the magic drum's sound among the Lapps, or among other races the monotony of rhythm in song, etc. Instead of these continuous, monotonous, weak stimulations of the senses, we find also that sudden and violent ones are made use of—for example in the Salpetriere, the field of Charcot's work, the loud noise of a gong, or a sudden ray of light; however, it is more than doubtful whether these sudden, strong, physical stimuli, without any mental stimuli, can induce hypnosis. Perhaps we have to do here with states not far removed from paralysis from fright. The sense of touch is also brought into play in hypnosis; Richet set great value on the so-called mesmeric strokes or passes. It is often stated that touches on the forehead induce a sleepy state in many persons. Hypnotism is practiced by stimulation of the muscular sense, such as cradle-rocking, used to send little children to sleep. Similar states are said to be produced among uncivilized people by violent whirling or dancing movements; the movements are, however, accompanied by music and other mental excitations.
Hypnosis is spoken of by Huc and Hellwald of the Buddhist convents in Thibet; and Sperling, who has had a particularly wide experience in the field of hypnotism, and whose opinion is of particular value, says that he has seen dervishes in Constantinople who, from the expression of their eyes and their whole appearance, as well as from peculiar postures they maintain for a long time, impressed him as being in a hypnotic state. The state may have been induced by singing and uniform whirling motions. Hildebrandt, Jacolliot, Fischer, Hellwald, and other trustworthy witnesses and authors tell us strange things about the fakirs of India, which set any attempt at explanation on the basis of our present scientific knowledge at defiance—that is, if we decline to accept them as mere juggler's tricks. Hypnotism seems to be the only explanation. It is a well known fact that both wild and domestic beasts can be hypnotized and the success of some of the animal-tamers is due to this fact. In hypnotism we see a probable explanation for the faith-cures which have extended over many centuries, and have their analogy in the supposed therapeutic powers of the Saints.
The medicolegal aspect of hypnotism may be called in to answer whether crime may be committed at suggestion. Such examples have already been before the public in the recent trial of the Parisian strangler, Eyraud. It was claimed that his accomplice in the crime, Gabrielle Bompard, had been hypnotized. Bernheim narrates a case of outrage effected in the hypnotic condition, which was brought to light by a trial in the South of France.
As to the therapeutic value of hypnotism, with the exception of some minor benefits in hysteric cases and in insomnia, the authors must confess that its use in Medicine seems very limited.
African sleep-sickness is a peculiar disorder, apparently infectious in character, which occurs among the negroes of the western coast of Africa. It has been transported to other regions but is endemic in Africa. According to Dana it begins gradually with malaise and headache. Soon there is drowsiness after meals which increases until the patient is nearly all the time in a stupor. When awake he is dull and apathetic. There is no fever; the temperature may be subnormal. The pulse, too, is not rapid, the skin is dry, the tongue moist but coated, the bowels regular. The eyes become congested and prominent. The cervical glands enlarge. The disease ends in coma and death. Recovery rarely occurs. Sometimes the disease is more violent, and toward the end there are epileptic convulsions and muscular tremors. Autopsies have revealed no pathologic changes.
Recently Forbes contributes an interesting paper on the sleeping sickness of Africa. The disease may occur in either sex and at any age, though it is most frequent from the twelfth to the twentieth years, and in the male sex. It begins with enlargement of the cervical glands, and drowsiness and sleep at unusual hours. At first the patient may be aroused, but later sinks into a heavy stupor or coma. Death occurs in from three to twelve months, and is due to starvation. Forbes reports 11 fatal cases, and two that passed from observation. At the autopsy are found hyperemia of the arachnoid, and slight chronic leptomeningitis and pachymeningitis. There is also anemia of the brain-substance. In one of his cases the spleen was enlarged. He was inclined to regard the disease as a neurosis.
Aphasia is a disease of the faculty of language, that is, a disturbance of the processes by which we see, hear, and at the same time appreciate the meaning of symbols. It includes also the faculty of expressing our ideas to others by means of the voice, gesture, writing, etc. The trouble may be central or in the conducting media. The varieties of aphasia are:—