He was disgusted with the habit, and finally overcame it by the exercise of his will-power.
Runge discusses three cases of hereditary rumination. These patients belonged to three generations in the male line. The author subjected the contents of the stomach of one patient to quite an extensive analysis, without finding any abnormality of secretion.
Wakefulness.--Generally speaking, the length of time a person can go without sleep is the same as that during which he can survive without food. Persons, particularly those of an hysteric nature, are prone to make statements that they have not slept for many days, or that they never sleep at all, but a careful examination and watch during the night over these patients show that they have at least been in a drowsy, somnolent condition, which is in a measure physiologically equivalent to sleep. Accounts of long periods of wakefulness arise from time to time, but a careful examination would doubtless disprove them. As typical of these accounts, we quote one from Anderson, Indiana, December 11, 1895:--"David Jones of this city, who attracted the attention of the entire medical profession two years ago by a sleepless spell of ninety-three days, and last year by another spell which extended over one hundred and thirty-one days, is beginning on another which he fears will be more serious than the preceding ones. He was put on the circuit jury three weeks ago, and counting to-day has not slept for twenty days and nights. He eats and talks as well as usual, and is full of business and activity. He does not experience any bad effects whatever from the spell, nor did he during his one hundred and thirty-one days. During that spell he attended to all of his farm business. He says now that he feels as though he never will sleep again. He does not seem to bother himself about the prospects of a long and tedious wake. He cannot attribute it to any one thing, but thinks that it was probably superinduced by his use of tobacco while young."Somnambulism, or, as it has been called, noctambulation, is a curious phase of nocturnal cerebration analogous to the hypnotic state, or double consciousness occasionally observed in epileptics. Both Hippocrates and Aristotle discuss somnambulism, and it is said that the physician Galen was a victim of this habit. Horstius, ab Heers, and many others of the older writers recorded interesting examples of this phenomenon. Schenck remarks on the particular way in which somnambulists seem to escape injury. Haller, Hoffmann, Gassendi, Caelius Rhodiginus, Pinel, Hechler, Bohn, Richter,--in fact nearly all the ancient physiologists and anatomists have written on this subject. The marvelous manifestations of somnambulism are still among the more surprising phenomena with which science has to deal. That a person deeply immersed in thought should walk and talk while apparently unconscious, excites no surprise, but that anyone should when fast asleep perform a series of complicated actions which undoubtedly demand the assistance of the senses is marvelous indeed. Often he will rise in the night, walk from room to room, go out on porticoes, and in some cases on steep roofs, where he would not dare to venture while awake. Frequently he will wander for hours through streets and fields, returning home and to bed without knowledge of anything having transpired.
The state of the eyes during somnambulism varies considerably.
They are sometimes closed, sometimes half-closed, and frequently quite open; the pupil is sometimes widely dilated, sometimes contracted, sometimes natural, and for the most part insensible to light.
Somnambulism seems to be hereditary. Willis cites an example in which the father and the children were somnambulists, and in other cases several individuals in the same family have been afflicted. Horstius gives a history of three young brothers who became somnambulistic at the same epoch. A remarkable instance of somnambulism was the case of a lad of sixteen and a half years who, in an attack of somnambulism, went to the stable, saddled his horse, asked for his whip, and disputed with the toll-keeper about his fare, and when he awoke had no recollection whatever of his acts, having been altogether an hour in his trance.
Marville quotes the case of an Italian of thirty, melancholic, and a deep thinker, who was observed one evening in his bed. It was seen that he slept with his eyes open but fixed and immovable. His hands were cold, and his pulse extremely slow. At midnight he brusquely tore the curtains of his bed aside, dressed himself, went to his stable, and mounted a horse. Finding the gate of the court yard closed he opened it with the aid of a large stone. Soon he dismounted, went to a billiard room, and simulated all the movements of one playing. In another room he struck with his empty hands a harpsichord, and finally returned to his bed. He appeared to be irritated when anybody made a noise, but a light placed under his nose was apparently unnoticed. He awoke if his feet were tickled, or if a horn was blown in his ear. Tissot transmits to us the example of a medical student who arose in the night, pursued his studies, and returned to bed without awaking; and there is another record of an ecclesiastic who finished his sermon in his sleep.