This section is from the book "Sleep Psychologically Considered With Reference To Sensation And Memory", by Blanchard Fosgate. Also available from Amazon: Sleep Psychologically Considered with Reference to Sensation and Memory.
(after his being mesmerized) and never felt any pain at all; I once felt as if I heard a kind of crounching.' He was asked if that was painful; he replied; 'No pain at all. I never had any; and knew nothing, till I was awakened by that strong stuff,' The 'crounching' was the sawing of his own thigh bone. The first dressing was performed in mesmeric sleep, with similar success, and absence of all pain."
In the London Penny Cyclopaedia we find the following case - Vide article Somnambulism.
"Madame Plantin, aged 64, living at No. 151 Rue Saint Dennis, consulted M. Cloquet, April 8th, 1829, respecting an open cancer which had existed for several years in her breast, and which was complicated with a considerable enlargement of the right axillary ganglions. M. Chapelain, her physician, who had mesmerized her for some months, with the view of dissipating the disease, could effect only a profound sleep, in which sensation appeared suspended, but intellect remained perfect. He suggested to M. Cloquet to operate upon her in the mesmeric sleep-waking. M. Cloquet, having judged the operation indispensable, consented, and it was fixed for the following Sunday, April 1st. The two previous days, she was mesmerized several times by Dr. Chapelain, who prevailed on her, when in the state of sleep-waking, to bear the operation without fear, and brought her even to converse about it calmly; although, when she was awake, she could not listen to the proposal for horror.
"On the day fixed, M. Cloquet arrived at half-past ten in the morning, and found the lady dressed, in an arm-chair, in the attitude of a person calmly asleep. She had returned about an hour from mass, which she had habitually attended at that time of the day. Dr. Chapelain had thrown her into the mesmeric sleep on her return. She spoke with perfect calmness of the operation which she was about to undergo. All being ready she undressed herself, and sat upon a common chair.
"Dr. Chapelain supported her right arm. The left was allowed to hang at her side. M. Pailloux, internal student of the Hopital Saint Louis, had the charge of presenting the instruments and applying the ligatures. The first incision was begun at the arm-pit, and carried above the breast as far as the inner side of the nipple. The second was begun at the same point, and carried under the breast till it met the first. M. Cloquet dissected out the enlarged ganglions with care, on account of their proximity to the axillary arteries, and removed the breast. The operation lasted ten or twelve minutes.
"During all this time, the patient conversed calmly with the operator, and gave not the least sign of sensibility; no movement occurred in the limbs or features; no change in the respiration or voice, no emotion even in the pulse was discernible; this patient remained uninterrupted in the same state of automatic indifference and passiveness (etat d'abandon et d'impassibilite automiques), - in which she was some minutes before the operation. There was no necessity to restrain her, we had only to support her. A ligature was applied to the lateral thoracic artery, which was opened in removing the ganglions. The wound was closed with sticking-plaster and dressed, and the patient was put to bed, still in the same state of sleep-waking; and was left in this state for eight and forty hours. An hour after the operation a slight haemorrhage occurred, which proved of no importance.
"The first dressing was removed on Tuesday the 14th; the wound was washed and dressed afresh ; the patient showed no sign of pain; the pulse was undisturbed. After this dressing, Dr. Chapelain awoke the patient, whose sleep-waking had lasted from one hour before the operation, i. e. two days. The lady seemed to have no idea, no conception of what had passed; but on learning that she had been operated upon, and seeing her children around her, she experienced a very strong emotion, to which the mesmerizer put an end by immediately sending her to sleep again."
Double consciousness - another completely abnormal state, to which in the course of our concluding remarks We shall again recur, - is often induced by animal magnetism; and when so induced, is called independent clairvoyance. The individual, in this condition, is as perfectly conscious, has as clear an understanding of surrounding objects, and is as self-possessed as under ordinary circumstances; but on coming out of it, he retains no remembrance of what has taken place. When the same state of mind is again induced, what had transpired in a former state of the same kind, is again present to him.
A little girl about twelve years old, when in this state, in her lively intercourse with her relatives and companions, on attempting to run quickly across the, room, hit her head against a stove pipe, which gave her some pain. On being restored she could recollect nothing about it; but on a future occasion, being in the same state, she was requested to see how fast she could run, to which she replied that she had tried that once, had hit her head against the stove pipe, and should not do it again.
The phenomena of double consciousness can be maintained for an indefinite period. We find in Prof. W. H. Rogger's "Facts in Mesmerism," an instance extended to three weeks, and in other books on Animal Magnetism, cases of a much longer period are recorded.
In many instances, the individuals, on being restored to the natural state from any of the conditions induced by mesmerism, have an indistinct remembrance of what has transpired. Upon close investigation of all the phenomena, it appears that memory depended upon an imperfect state of sleep at the time, the influence having in part subsided. In other cases, the magnetizer, by so willing, fastens the transactions upon their memory. Here also we apprehend that his influence induced at the time a more perfect state of sensation, and by this means a remembrance of occurrences is retained.
Great diversity of mental character is exhibited by the influence of animal magnetism. In one subject it exalts the natural quality of mind almost beyond the power of conception; in another, it so perfectly becalms the thoughts, that the individual borders on fatuity; while in others, the ordinary temperament is quite unaffected; and in some, the thoughts and feelings of the mesmerizer are reflected as in a mirror -the mesmerized having apparently lost his own identity.
Physically considered, in some -constitutions it produces merely a state of sound sleep; while in others it superadds convulsions. In some cases it is the exciting cause of catalepsy; and in every instance its influence is exerted on some portion of the nervous system. We have witnessed in one case, catalepsy of muscle; in several, paralysis of muscle; and in very many instances, muscular rigidity, but in no case did the. same individual ever exhibit more than one of these conditions. This variety of symptom is probably the result of constitutional idiosyncrasy.
Let the essential principle be what it may, animal magnetism holds a controlling power over both mind and body. The few examples of its influence we have cited in this chapter, are given - not to decipher what this mysterious agent is - but to show how intimately memory and sensation are associated; and how absolutely dependent the memorial faculty is upon the integrity of the organs of special sense for its development.
 
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