Insomnia; and Other Disorders of Sleep

by Henry M. Lyman

In the lower grades of the hypnotic state, consciousness is not abolished, and the subsequent recollection of events during the experience may be quite perfect. In such cases illusions and hallucinations, that were excited by suggestions from the controlling mind of another, survive in memory, and become the causes of serious delusion. Witness, for example, the manner in which excitable people, partially hypnotized in a so-called “spiritual circle,” believe in the reality of the illusions which have occupied their powers of perception during a “seance.” To this inferior grade of self-induced hypnotism belong all those conditions of sensory hyperæsthesia by means of which certain persons are enabled to read the hidden thoughts of others. This capacity is, essentially, a mere exaltation of that power which all mankind shares in a greater or less degree. In every instance it has been remarked that the ordinary “medium” can only respond correctly to questions for which the true answer is present in the mind of the questioner. To all other interrogatories the replies are delivered purely under the influence of random suggestion. In some cases the pathway of communication lies through actual bodily contact, as in ordinary “mind-reading,” where the invisible molecular oscillations of the muscular elements of one person serve to guide the perceptions and movements of another. But, more frequently, the transmission of ideas is effected through the action of the facial and ocular muscles. From these organs of expression the “table-rapper,” or the “planchette-writer,” reads the unspoken thoughts of the questioner, in a manner very like, yet vastly more delicate than that by which deaf mutes are taught to interpret the movements of the lips of persons with whom they converse. This fact is clearly illustrated by the experience of Maury,[98] in an interview with a celebrated table-rapper who, without the slightest hesitation, made known to him the age, name, and date of death of a brother whom he had lost. She also gave the same information regarding his father, and pronounced the names of other persons upon whom he had fixed his attention. But, if he turned away his face, or if he concealed his eyes so that the woman could no longer scrutinize their expression, her responses became entirely uncertain and destitute of conformity with fact.

The induction of the hypnotic state, if not too often repeated, is sometimes of considerable service in the relief of various functional disorders of a painful character. This fact, enthusiastically announced, many years ago, by Dr. Braid, has recently been freshly brought forward through the experiments of Fischer,[99] Wiehe,[100] Rieger,[101] and others. In our own country this method of treatment has not yet been adopted by many in the medical profession, though its efficacy in a particular class of cases is not denied. Outside of professional circles, however, it is exploited to a considerable extent under the strange misnomer of Metaphysical Healing. But, as De Watteville has truly remarked,[102] “the time is near when the curative influence of hypnotism will be submitted to the same scrutiny as its physiological and psychological import has undergone.”

THE END.

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INDEX.

Acids, [71]
hydrobromic, [88]
hydrochloric, [72]
hydrocyanic, [100]
hydrocyanic, in gastric disease, [103]
lactic, [72]
nitric, [72]
nitro-muriatic, in hepatic insomnia, [103]
phosphoric, [72]
Aconite, [63], [93], [100]
Africa, maladie du sommeil of, [30]
winds from the deserts of, effect of, [46]
Africans, habits of, regarding sleep, [40]
victims of the maladie du sommeil, [30]
Alcohol, [76]
effect of, upon the brain, [54]
in angina pectoris, [99]
in asthma, [101]
in chorea, [110]
in dyspepsia, [103]
in fever, [105]
in hepatic diseases, [102]
Allen, Prof. J. Adams, case of somnambulism observed by, [185]
Allix, observations of, regarding bodily temperature in sleep, [7]
Allix and Hohl, observations of, regarding the pulse in sleep, [6]
Aloetic purgatives in insanity, [94]
Ammonia, in fever, [105]
Amyl nitrite, [84]
in angina pectoris, [99]
in asthma, [101]
Anæmia of the brain, [53]
Anæsthetics, [75]
Angelic visitors, delusions regarding, [129]
Angina pectoris, [99]
Anti-spasmodic effects of belladonna, [69]
Apparent death, [34]
crucial test of, [35]
Arabia, effects of wind from the deserts of, [46]
Arago, observations of, regarding atmospheric electricity, [46]
Arsenic, in asthma, [101]
Atropia, [69]
Atropine, use of, with opiates, [87]
Artificial sleep, effect of, upon the process of oxidation, [9]
mode of production of, [22]
Artificial somnambulism, [214]
cataleptic form of, [219]
lethargic form of, [220]
recollection of the events of, [227]
somnambulic form of, [222]
three varieties of, [219]
Assafœtida, use of, in insomnia, [110]
Assimilation, rate of, in sleep, [5]
Association of ideas, cessation of, in sleep, [3]
effect of, [123]
Asphyxia, [100]
Asthma, insomnia caused by, [101]
relieved by atropine, [69]
relieved by chloroform, [82]
relieved by ether, [82]
relieved by iodide of potassium, [110]
relieved by lobelia, [71]
relieved by stramonium, [71]
relieved by tobacco, [71]
Atmospheric electricity, effects of, [46]
Australia, effect of winds from the deserts of, [46]
Azam, a case of somnambulic life observed by, [208]
Bachelder, Dr. G. H., observations of, on the maladie du sommeil, [32]
Baillarger, hallucination excited by dreaming, [126]
Ball and Chambard, classification of the varieties of somnambulism, [169]
Baths, use of, as nervous stimulants, [60]
cold, [73], [95]
in fever, [104]
in insomnia, [112]
in scarlet fever, [76]
shower, [95]
warm, [94]
Bartholow, on the use of phosphorus, [71]
Beard and Rockwell, on the use of electricity, [62]
Beer, effect of, [76]
Belladonna, [69], [100]
use of, in asthma, [101]
use of, in fever, [104]
use of, in hepatic diseases, [102]
Bismuth, use of, in gastric diseases, [103]

Bladder, insomnia in irritability of, [90]
Blisters, use of, in rheumatism, [106]
Blood, control of its circulation by the nervous system, [26]
Bombardment, sleep during, [1]
Boussingault, experiments of, on the process of oxidation in the tissues, [9]
observations of, on respiration in sleep, [6]
observations of, regarding the bodily temperature in sleep, [7]
Brain, consequences of inordinate excitability of, [159], [161]
exalted receptivity of, during the waking state, [150]
exalted susceptibility of, in sleep and dreaming, [144], [150]
the, its division into separate mechanisms, [13]
the, a reservoir of sensory impressions, [124]
Brandy, use of, in wakefulness, [77]
Bromide of potassium, use of, in insanity, [95]
of sodium, use of, in chronic alcoholism, [97]
of sodium, use of, in delirium tremens, [98]
Bromides, the, [88]
use of, in convulsions, [110]
use of, in delirium, [77]
use of, in fever, [104]
use of, in night terrors, [112]
use of, in pregnancy, and after parturition, [109]
use of, with chloral and morphia, [86]
Brooke, Lieut. J. M., observations of, regarding hypnotic clairvoyance, [224]
Bronchitis, insomnia caused by, [100]
insomnia of, relieved with paraldehyde, [80]
Brunton, Dr. T. Lauder, his theory of counter-irritation, [62]
Butylchloral hydrate, [83]
Buschick, experience of, in waking before earthquakes, [144]
Caffeine, effect of, upon the brain, [54]
Camphor, [67]
use of, in asphyxia, [100]
use of, in fevers, [105]
use of, in the insomnia of cachexia, [108]
use of, after parturition, [109]
Cannabin, [69]
Cannabin tannate, [68]
Cannabis indica, [68]
anti-aphrodisiac effect of, [69]
use of, in delirium tremens, [98]
use of, in fever, [104]
use of, in insanity, [96], [97]
use of, in pregnancy, [109]
use of, as a substitute for hyoscyamus, [113]
Cantharides, [63]
Capsicum, [63]
Capsicum, use of, in the insomnia of delirium tremens, [77], [98]
Carbolic acid, vapor of, for relief of cough, [100]
Carbon, oxidation of, during sleep, [7]
Carbonic acid gas, discharge of, during sleep, [9]
Cardiac debility, use of butylchloral in, [83]
Cardiac disease, insomnia of, treated with paraldehyde, [80]
treated with digitalis, [66]
Cardiac dyspnœa, relieved with opiates, [87], [98]
Cardiac neuralgia, [99]
Carotid arteries, compression of, for relief of insomnia, [25], [27], [57]
Cataleptic form of artificial somnambulism, [219]
Catarrh, nasal, effect of sleep upon, [8]
Caton, Judge John D., on the difficulty of sleep during the continuous daylight of summer in Norway, [40]
Cerebral activity, effect of, upon bodily temperature, [8]
Cerebral anæmia and its cause during sleep, [25], [28]
use of phosphorus for, [71]
Cerebral circulation, dependence of consciousness upon, [25], [27]
during sleep, observations upon, by Professor Mosso, [26]
Cerebral exhaustion, benefited by the use of phosphorus, [71]
in fever, [105]
Cerebral hyperæmia, effects of, [145]
insomnia of, treatment with paraldehyde, [80]
Cerebral irritation in cachectic states, [108]
Cerebro-spinal meningitis, use of opiates in, [93]
Cerebro-spinal weakness, [110]
Change of life, use of valerian during, [68]
Chicago, embarkation from, [45]
the great fire in, [40]
Child-birth, insomnia after, [81]
Chloral, [82]
Chloral hydrate, influence of, upon oxidation in the tissues, [9]
association of, with morphia and bromides, [86]
use of, in angina pectoris, [99]
use of, in asthma, [101]
use of, in cachexias with insomnia, [109]
use of, in chorea, [110]
use of, in chronic alcoholism, [97]
use of, in delirium tremens, [98]
use of, in fevers, [104]
use of, in hepatic diseases, [102]
use of, in insanity, [95]
use of, in meningitis, [94]
use of, in night terrors, [112]
use of, in respiratory diseases, [100]
Chlorodyne, [82]
use of, in syphilitic neuralgia, [107]
Chloroform, [81]
use of, in asthma, [101]
use of, in convulsions, [110]
spirit of, in the treatment of fevers, [105]
Chossat, observations of, on the temperature of pigeons, [7]
Circulation of blood, its regulation by the nervous system, [26]
disorders of, [52]
modified by counter-irritation, [63]
state of, during sleep, [6]
Clairvoyance, hypothetical explanation of, [148]
in dreams, [146], [148], [149]
in dreaming, and in natural somnambulism, [226]
in the hypnotic state, [224]
Clark, observations of, on the sleeping dropsy, [30]
Codeia, [85]
Codeine, [88]
Coffee, effects of, upon the brain, [54]
Cold, a nervous sedative, [73]
Cold baths, [73]
Cold, excessive, a cause of stupor, [47]
Colic, uterine, relief of, [81]
Color-blindness, effect of hypnotism upon, [223]
Coma, [32]
Coniine, [91]
Conium, [90], [95]
Consciousness, duration of the sensations required for its excitement, [23]
state of, during sleep, [14]
Convulsions, excited by compression of the carotid arteries, [27]
treatment of, [110]
Cough, spasmodic, treatment with spirit of chloroform, [82]
Counter irritants, [62]
Croton oil, [63]
Cups, counter irritation with, [63], [93]
Curci, observations of, regarding belladonna, [69]
regarding morphia, [85]
Cutaneous disorders, causes of insomnia, [55]
DaCosta, on lithæmia, [106]
Darkness, favorable to sleep, [18]
Day and night, alternation of, a cause of sleep, [17]
Death, apparent, [34]
test of, [35]
Degeneration of the brain, [55]
Demme, observations of, on bodily temperature in sleep, [7]
Delirium, [54]
excited by hyoscyamus, [70]
excited by stramonium, [71]
of exhaustion, [77]
treatment of, with musk, [67]
Delirium tremens, treatment of, with alcohol, [77]
with bromides, [89]
with capsicum, [77]
with chloral, [82]
with digitalis, [67]
Delusions, caused by dreams, [128]
Depressing emotions, a cause of sleep, [19]
Diagram, illustrating the stages of sleep, [4]
the varieties of somnambulism, [172]
Digitalis, indirectly hypnotic effect of, [66]
treatment of delirium tremens with, [98]
Diminution of energy, represented by sleepiness, [2]
Disease and dissolution, revival of memory in, [165]
Dover’s powder, [67], [100], [104], [110], [112]
Double consciousness, [204], [206]
Dreams, [116]
analysis of, [133]
at the moment of waking, [14]
brevity of, [15]
causes of, [118]
cause of special vividness of, [134]
clairvoyant, [146], [148], [149]
coherence of, [131]
definition of, [120]
dependence of, upon partial sleep of the brain, [11]
duration of, [135]
excited by gustatory sensation, [43], [125], [130]
by heat, [43]
by painful diseases, [141]
by sensory impressions during sleep, [29]
by sounds, [41]
incoherence of, [133]
intellectual combinations in, [131]
mode of their production, [124]
primitive belief in the divine origin of, [160]
prophetic, [142], [143]
recollection of, [140]
relation of, to depth of sleep, [4]
relation of, to waking hallucinations, [126]
resemblance of, to the mental processes of insanity, [133]
revival of memory in, [162]
somnambulic, [178]
state of volition during, [141]
suggested by external impulses, [125], [130]
theory of, [116]
waking, [123]
Dropsy, treatment of, with digitalis, [66]
Dumontpallier, case of self-hypnotism related by, [219]
Duration of sleep, [110]
Dyspnœa, cardiac, [98]
treatment of, with digitalis, [66]
Dyspeptic insomnia, [104]
East Indies, climate of, a cause of insomnia, [44]
Eggs, as an article of food, [66]
Electrical test of apparent death, [35]
Electricity, atmospheric, [46]
use of, [62], [63]

Emphysema, insomnia of, relieved with paraldehyde, [80]
Energy, diminution of, represented by sleepiness, [2]
renewal of, by sleep, [5]
Epilepsy, double consciousness in, [205]
Ether, hypnotic effect of, [81]
inhalation of, [98]
use of, in asthma, [101]
use of, in convulsions, [110]
use of, in irritative cough, [100]
Ether, compound spirit of, [81]
use of, in delirium tremens, [98]
use of, in hepatic diseases, [102]
Excrementitious substances, causes of insomnia, [55]
Exhaustion, a cause of sleep, [19]
relief of with alcoholic stimulants, [76]
states of, [64]
use of musk in, [68]
Exner, experiments of, to test the possibility of dreamless sleep, [14]
Eye, state of its secretions during sleep, [8]
Facial neuralgia, treatment of, with butylchloral, [83]
Fainting, a counterfeit of sleep, [25]
Fatigue, a cause of sleep, [19]
Fatigue theory of sleep, [20]
Fevers, eruptive, treatment of with musk, [68]
infective, [57]
typhoid, [57]
treatment of with cold baths, [73]
Flaxseed tea, [100]
Florida, climate of, in insomnia, [114]
Fonssagrives, observations of, regarding atmospheric electricity and insomnia, [46]
Food, lack of, a cause of insomnia, [63]
Foot-baths, hot, in the treatment of insomnia, [93], [94]
Force, fluctuations of, [15]
kinetic, [15]
potential, [15]
Frank, J. P., case of somnambulism related by, [195]
Functional nervous disorders, treatment of with hypnotism, [229]
Gairdner, W. T., case of somnambulic lethargy reported by, [174]
Gastro-intestinal glands, state of their secretions during sleep, [8]
Gelsemium, [90]
treatment of fever with, [104]
use of, in the wakefulness of children, [112]
Generation of ideas, relation of, to molecular movements in the brain, [24]
Grasset, case of somnambulism related by, [177]
Guérin, observations of, on the maladie du sommeil, [30]
Guiana, delusions among the Indians of, founded upon dreams, [128]
travels in, [42]
Guy, observations of, regarding the pulse in sleep, [7]
Hallucination, case of, related by Dr. E. H. Clarke, [156]
experienced by Sir Edmund Hornby, [150]
production of, by drugs, [120]
sometimes excited by dreams, [126], [150]
Hamilton, Sir William, experiments of, on the possibility of dreamless sleep, [14]
Hasheesh, visions excited by, [120]
Hayes, Dr. P. S., case of lucid lethargy reported by, [35]
Headache, [54]
Hearing, persistence of during sleep, [41]
sense of, during sleep, [11]
Heart, pulsation of, in sleep, [6]
Heat, a cause of insomnia, [44]
a nervous stimulant, [59]
effects of excessive, [47]
liberation of, during sleep, [9]
Heidenhain, observations of, on hypnotism, [214]
Helmholtz, observations of, on liberation of heat during sleep, [9]
Hemicrania, treatment of, with butylchloral, [83]
Henneberg, experiments of, on oxidation in the tissues, [9]
Hibernation, phenomena of, [48]
Hoffmann’s anodyne, [81]
Hohl and Allix, observations of, on the pulse in sleep, [6]
Holland, Sir Henry, observations of, regarding the loss of memory during exhaustion, [209]
Hops, [90]
treatment of chronic alcoholism with, [97]
Hornby, Sir Edmund, experience of hallucination, [150]
Horsford’s Acid Phosphate, [72]
Horvath, observations of, on the temperature of hibernating marmots, [8]
Hunger, [2]
Hydrobromic acid, [88]
Hydrochloric acid, useful in atonic dyspepsia, [72]
Hydrocyanic acid, [100]
in gastric diseases, [103]
Hyosciamia, [70], [96]
Hyosciamine, [70]
Hyoscyamus, [70]
use of, after parturition, [109]

use of, in asthma, [101]
use of, in fever, [104]
use of, in hepatic diseases, [102]
use of, in insanity, [96]
use of, in insomnia of children, [112]
use of, in renal diseases, [102]
Hyperæmia of the brain, [52], [54], [110]
Hypnagogic hallucinations, [3], [4]
Hypnagogic state, [2]
Hypnotic sleep, duration of, [217]
Hypnotic sleep, clairvoyance in, [224]
condition of the special senses in, [223]
conditions favorable to, [214]
exaltation of the imitative faculty during, [227]
methods of inducing, [215]
perception during, [149]
Hypnotism, [214]
likeness of, to somnambulism, [203]
observations of Braid, [214], [229]
observations of Charcot, [214], [219], [221]
observations of Cohn, [223]
observations of De Watteville, [229]
observations of Dumontpallier, [219], [221]
observations of Fischer, [150], [227]
observations of Harting, [215]
observations of Heidenhain, [214], [215], [216], [222]
observations of Milne-Edwards, [215]
observations of Rieger, [229]
observations of Wiehe, [229]
receptivity of the brain to suggestions during, [226]
suggestion of ideas during, [226]
therapeutical use of, [228]
Hysteria, a cause of double consciousness, [205]
Hysterical excitement, treatment of, [68]
Ice-cap, in the treatment of acute affections of the brain, [93]
Iceland moss, for the relief of cough, [100]
Ideas, their dependence upon molecular movements in the brain, [24]
Illusions, excited by disease and by drugs, [120], [122]
Imagination, persistence of, in sleep, [3]
Imitative faculties, exaltation of, in hypnotic states, [227]
Immermann, on cold baths, [73]
Impulses to violence during somnambulism, [193]
Im Thurn, Everard F., on dreams among the Indians of Guiana, [128]
Indians, of Guiana, magic practices among, [42]
Inflammations affecting the brain, [54]
Inhalations, medicated, [100]
Injuries of the brain, [55]
Insanity, [54], [57], [70], [133]
Insomnia, [38]
Insomnia, causes of, [39]
caused by aortic obstruction, [84]
caused by asthma, [101]
caused by cardiac disorders, [51]
caused by cold, [47]
caused by contagia of animal origin, [55]
caused by cutaneous disorders, [49], [55]
caused by dyspepsia, [51]
caused by electrical disturbances, [46]
caused by excrementitious substances, [55]
caused by fatigue, [78]
caused by heat, [44], [46]
caused by heat and humidity, [44]
caused by icterus, [49]
caused by inflammations, [50]
caused by insects, [49]
caused by itching in myelitis, [49]
caused by itch-mite, [49]
caused by light, [39]
caused by malaria, [72]
caused by meningitis, [50]
caused by miasms, [55]
caused by morbid states of the central nervous organs, [51]
caused by neuralgia, [50]
caused by neuritis, [50]
caused by neuromata, [50]
caused by oxaluria, [72]
caused by pain, [49]
caused by parasites, [49]
caused by periostitis, [50]
caused by phosphatic diathesis, [72]
caused by pneumogastric disorder, [51]
caused by poisons, [55]
caused by products of putrefaction, [55]
caused by respiratory disorders, [51]
caused by rheumatic diathesis, [72]
caused by sounds, [41]
caused by smells, [42]
caused by stramonium, [71]
caused by sympathetic nerve disorder, [50]
Insomnia, occurrence of, after childbirth, [81]
occurrence of, after parturition, [109]
occurrence of, during acute affections of the brain, [92]
occurrence of, during bronchitis, [80]
occurrence of, during cardiac diseases, [66], [80], [87]
occurrence of, during change of life in women, [84]
occurrence of, during childhood, [110]
occurrence of, during chorea, [110]
occurrence of, during chronic alcoholism, [97]
occurrence of, during chronic phthisis, [84]
occurrence of, during delirium tremens, [87], [90], [97]
occurrence of, during diseases of the heart and blood-vessels, [98]
occurrence of, during diseases of the liver, [102]
occurrence of, during diseases of the respiratory organs, [99]
occurrence of, during disorders of nutrition, [107]
occurrence of, during dysmenorrhœa, [84]
occurrence of, during emphysema, [80]
occurrence of, during febrile conditions and fevers, [87], [104]
occurrence of, during gastric and intestinal disorders, [87], [103]
occurrence of, during gout and rheumatism, [103], [107]
occurrence of, during headache, [84]
occurrence of, during hysteria, [81], [89]
occurrence of, during insanity, [94]
occurrence of, during irritability of the bladder, [90]
occurrence of, during irritability of the sexual organs, [90]
occurrence of, during irritative dyspepsia, [90]
occurrence of, during jaundice, [80]
occurrence of, during lithæmia, [106], [107]
occurrence of, during mania, [87], [89], [90]
occurrence of, during melancholia, [96]
occurrence of, during mental exhaustion, [89]
occurrence of, during nervous disorders, [80]
occurrence of, during neuralgia, [84]
occurrence of, during old age, [78], [113]
occurrence of, during opium habit, [84]
occurrence of, during paretic dementia, [96]
occurrence of, during phthisis, [80], [87]
occurrence of, during pregnancy, [89], [109]
occurrence of, during the puerperal state, [89]
occurrence of, during renal diseases, [101]
occurrence of, during rheumatism and gout, [105], [107]
occurrence of, during sexual excitement, [89]
occurrence of, during spasmodic diseases, [109]
occurrence of, during states of exhaustion, [67]
occurrence of, during syphilis, [106], [107]
Insomnia, relation of, to states of the cerebral circulation, [57]
relief of, by compression of the carotid arteries, [25]
Iodide of potassium, treatment of asthma with, [110]
Ipecac, treatment of asthma with, [101]
Irritability of the brain, [53], [54]
Itching of eczema, relieved with cannabis indica, [69]
Jacobi, A., on wakefulness of children, [111]
Japanese, use of massage among, [61]
Jaundice, insomnia of, treatment with paraldehyde, [80]
Jessen, case of hallucination caused by dreaming, [127]
Joseph, St., dreams of, [142], [160]
Judgment, suspension of, during sleep, [3]
Kohlschütter, experiments of, to measure the depth of sleep, [16]
Koumiss, [64]
Lactic acid, hypnotic effects of, [72]
Lactate of sodium, hypnotic effects of, [20], [72]
Lactucarium, [88]
Latent contracture, [221]
Leeches, use of, [63], [93], [94]
Lethargic form of artificial somnambulism, [220]
Lethargy, [33]
produced by excessive cold, [48]
Lewin, observations of, on respiration during sleep, [6]
experiments of, on oxidation in the tissues, [9]
Liebermeister, experiments of, on oxidation in the tissues, [9]
Life, normal, [4]
possibility of intermissions in its active manifestation, [15]
Light, interference of, with sleep, [40], [41]
Liquors, effects of, [76]
Lithæmia, a cause of insomnia, [106]
Lithium bromide, [88]
Lobelia, anti-spasmodic effects of, [71], [101]
Lomi-lomi, [61]
Lucid lethargy, [35]
contrasted with somnambulic lethargy, [176]
Lupulin, [90]
Macario, case of somnambulism, reported by, [192]
Mackinac, voyage to, [45]
Macnish, case of somnambulic life, reported by, [206]
Maladie du sommeil, [30]
Malaria, treatment of insomnia, caused by, [72]
Mania, use of chloral in, [82]
Marmot, hibernation of, [48]
temperature of, during hibernation, [8]
Massage, [60], [109]
Matter and mind, communication between, [22]
Maury, A., classification of the varieties of somnambulism, [168]
experience of, with table-rapping, [228]
theory of, regarding forgetfulness of the events of somnambulism, [211]
Measles, use of baths in, [74]
Meat juice, [66]
Memory, effect of physical exhaustion, [209]
exaltation of, in somnambulism, [187]
persistence of, in sleep, [3]
relation of, to phenomena of somnambulism, [192]
revival of, during disease and dissolution, [165]
revival of, during dreaming, [162]
Meningitis, [54], [57]
Mental activity during sleep, [14]
Mesnet, case of somnambulism related by, [196]
Metaphysical healing, [229]
Michigan, Lake, voyage upon, [45]
Northern, summer climate of, favorable to sleep, [45]
Milk, peptonized, [64]
Mind and matter, communication between, [22]
alternate states of action and repose, [15]
sleep of, [15]
state of, during sleep, [14]

Mind-reading, [218], [227]
Minnesota, summer climate of, favorable to sleep, [45]
Mitchell, S. Weir, observations of, regarding effect of variable barometric pressure, [47]
Molecular movement, its relation to the generation of ideas, [24]
Moral responsibility in somnambulism, [203]
Morphia, [97], [98], [100], [101]
Morphine, influence of, on oxidation in the tissues, [10]
Mosso, Professor, on the circulation of blood during sleep, [26]
on respiration during sleep, [5]
Mouth, condition of, during sleep, [8]
Muscles, effect of sleep upon, [12]
fibrillary twitching of, during sleep, [3]
Muscle-reading, [218]
Musk, [67], [100], [105]
Mustard, [63]
Nasal catarrh, state of secretion during sleep, [8]
Narcotic stupor, [29]
Nerves, of common sensation, affections of, [39], [49]
pneumogastric, [51]
sympathetic, affections of, causes of insomnia, [50]
Nervous disorders, insomnia of, relieved with paraldehyde, [80]
hypnotic treatment of, [229]
Nervous irritation, effect of, on tissue change, [10]
sedatives, [58], [59]
stimulants, [58], [59]
system, its control over the circulatory apparatus, [26]
Neuralgia, cardiac, [99]
treatment of, with alcohol, [77]
treatment of, with belladonna, [69]
treatment of, with preparations of valerian, [68]
Neurasthenic patients, [66]
New Providence, climate of, beneficial in insomnia, [114]
Night and day, alternation of, a cause of sleep, [17]
Night terrors, [179]
treatment of, [89], [112]
Nitric acid, [72]
Noctambulism, [169]
Noise, sleep prevented by, [41]
North China Herald, criticism of Sir E. Hornby’s narrative, [155]
Norway, difficulty of sleeping during the summer, [40]
Nutrition, effect of sleep upon, [5], [9]
disorders of, [52]
Obersteiner, his theory of sleep, [20]
Odors, effect of, upon sleep, [11]
Old age, decline of life in, [113]
Omphaloscopy, [217]
Opium and opiates, [84], [98]
Opiates, use of, in treatment of cachexias, [108]
use of, in treatment of fever, [104], [105]
use of, in treatment of gastric disease, [103]
use of, in treatment of insanity, [96]
use of, in treatment of renal diseases, [102]
use of, in treatment of rheumatism, [105]
Oxaluria, insomnia caused by, [72]
Oxygen, absorption of, during sleep, [9]
Ozone, use of, in the treatment of asthma, [101]
Pacific Islanders, habits of, regarding sleep in the daytime, [40]
use of massage among, [61]
Pain, a cause of sleep, [19]
Paraldehyde, [79], [95], [97], [108]
Paregoric, [100]
Perception, effect of, upon nervous tissue, [10]
duration of, necessary to arouse consciousness, [23]
range of, circumscribed by sleep, [12]
transfer of, in telepathy and hypnotism, [217]
Percussion, [61]
Perspiration, secretion of, during sleep, [9]
Pettenkofer, experiments of, on oxidation in the tissues, [9]
experiments of, on respiration in sleep, [6]
Pettenkofer and Voit, on tissue changes, [10]
Pflüger, hypothesis of, regarding the cause of sleep, [21]
Phosphatic diathesis, a cause of insomnia, [72]
Phosphoric acid, [72]
Phosphorus, [71]
Phthisis, cough of, relieved with lactucarium, [88]
insomnia of, relieved with paraldehyde, [80]
treatment of, with opiates, [87]
Physiological activity, reduction of, during sleep, [5]
Physiological cause of somnambulism, [180]
Planchette-writing, [228]
Pleuritic pain, [99]
Pneumogastric nerves, insomnia caused by affections of, [51]
Pneumonia, [68], [100]
Porter, effects of, [76]
Potassium bromide, [88]
Preyer, his theory of sleep, [20]
Psychical Research, Society for, investigations by, [149], [217]
Pulse, state of, during sleep, [6]
Punkah, use of, to promote sleep, [44]
Quetelet, observations of, on respiration during sleep, [5]
Quinine and opium, use of, in fever, [104]

Reasoning powers, arrest of, during sleep, [3]
Recollection of the events of artificial somnambulism, [227]
of the events of natural somnambulism, [188]
Reflex movements during sleep, [12]
Refrigeration, threefold effect of, [49]
Relation between molecular movement and the generation of ideas, [24]
Respiration during sleep, [5]
Revelation through dreams, [160]
Revery, nature of, [120]
Rheumatic diathesis, a cause of insomnia, [72]
Rosenthal, observations of, regarding lethargy, [33], [34]
observations regarding apparent death, [35]
Rush, Dr., observations of, on the revival of memory in dissolution, [165]
Sailors, sleeping during a bombardment, [1]
Sailor-boy, sleeping on a mast, [1]
Salicylic acid, treatment of rheumatism with, [106]
Saliva, secretion of, during sleep, [8]
Samuel the prophet, dream of, [129]
Sandwich Islands, climate of, for relief of insomnia, [114]
Scarlet fever, treatment of, with baths, [74], [75]
Scharling, observations of, regarding bodily temperature during sleep, [7]
experiments of, on oxidation in the tissues, [9]
Screaming fits of children, [112]
Secretion, state of, during sleep, [8]
Sedatives, nervous, [59], [73]
Self-hypnotism, [219]
Sensory excitement, effect of, upon the cerebral circulation, [27], [28]
Sensory organs, condition of, during somnambulism, [191]
Sexual organs, irritability of, [90]
Shampooing, [61]
Simon, P. Max, case of somnambulism related by, [182]
dream related by, [142]
Sleep, affected by certain winds, [45]
artificial, mode of its production, [22]
caused by the alternation of day and night, [17]
caused by depressing emotions, [19]
caused by exhaustion, [19]
caused by fatigue, [19]
caused by painful impressions, [19]
caused by the venereal act, [19]
definition of, [1]
dreamless, [14]
duration of, [4], [110]
effects of its invasion upon the intellectual faculties, [13]
effect of, upon consciousness, [13], [14]
fatigue theory of, [20]
favored by darkness, [18]
favored by the suppression of sensation, [18]
hindered by heat, [44]
hindered by light, [39]
hindered by smells, [42]
hindered by sounds, [41]

introductory stage of, [2]
invasion of, [10], [117]
measure of its depth by the experiments of Kohlschütter, [16]
Obersteiner’s theory of, [20]
Pflüger’s hypothesis regarding the cause of, [21]
preceded by sleepiness, [2]
Preyer’s theory of, [20]
rapid induction of, in certain cases, [24]
relation between the duration of, and the average length of the night, [17]
stages of, [4]
the cause of, [29]
unequal incidence of, upon different portions of the brain, [13]
Sleep-drunkenness, [180], [181]
Sleepiness, precursive of sleep, [2]
Sleeping dropsy, [30]
Sleeplessness, causes of, [39]
Smells, abolition of sleep by, [42]
Smile, during sleep, [12]
Smith, E., experiments of, on oxidation in the tissues, [9]
Snoring, occasional interruption of sleep by, [11]
Society for Psychical Research, investigations by, [149], [217]
Sodium bromide, [88]
Somniation, [169]
Somnambulic dreams, [171], [178], [181]
recollections of, [188]
Somnambulic form of artificial somnambulism, [222]
Somnambulic lethargy, [171], [173]
contrasted with lucid lethargy, [176]
Somnambulic life, [169], [204]
a case of, [206]
a case of, related by Azam, [208]
a case of, related by Macnish, [206]
Somnambulism, [166]
artificial, [214]
case of, related by Prof. J. Adams Allen, [185]
case of, related by J. P. Frank, [195]
case of, related by Macario, [192]
case of, related by Mesnet, [196]
case of, related by P. Max Simon, [182]
causes of, [166]
condition of sensory organs during, [191]
dependence of, upon partial sleep of the brain, [11]
likeness of, to hypnotism, [203]
moral responsibility in, [203]
phenomena of, [167], [210]
physiological cause of, [180]
relation of memory with events of, [192]
varieties of, according to A. Maury, [168]
varieties of, according to Ball and Chambard, [169]
varieties of, diagrammatically exhibited, [172]
violent impulses during, [193]
Somnolence, [30]
Somnolentia, [180], [181]
Sound, effect of, to hinder sleep, [42]
effect of, to induce sleep, [42]
Spasmodic croup, [110]
Special sense organs, affections of, [39]
Special senses, condition of, during invasion of sleep, [11]
perversion of, during the hypnotic state, [223]
Spinal cord, irritability of, [110]
reflex energy of, during sleep, [3]
Spinal irritation, [62]
Spirit of chloroform, [81]
Spiritual circle, manifestations in, [227]
Stewart, Dugald, observation of, [43]
Stimulants after parturition, [109]
in fever, [105]
nervous, [59]
Stramonium, [70], [101]
Strümpell, observations of, regarding sleep produced by suppression of sensation, [18]
Strychnia, [105]
Stupor produced by excessive heat or cold, [47]
Subsultus tendinum, treatment of, with musk, [67]
Suction, involuntary, during infantile sleep, [12]
Suppression of sensation, a cause of sleep, [18]
Swedish movement cure, [61]
Sympathetic nerves, affections of, [39], [50]
Table-rapping, method of communication in, [228]
Tannate of cannabin, [68]
Tartar emetic, use of, in asthma, [101]
use of, in delirium tremens, [98]
use of, in fever, [104]
use of, with opium, [108]
Taste, relation of, to insomnia, [43]
Tea, effect of, upon the brain, [54]
Telegraphy without a wire, through water, [147]
Telepathy, investigation of, by the Society for Psychical Research, [149]
Temperature, of the body, during sleep, [7]
sense of, [43]
Thapsia, [63]
Theory of sleep, Obersteiner’s, [20]
Pflüger’s, [21]
Preyer’s, [20]
Thirst, [2]
Thompson, Sir William, his doctrine concerning a sixth sense, [43]
Tickling, effect of during sleep, [12]
Tobacco, anti-spasmodic effect of, [71], [99], [101]
Transfer of perceptions, [217]
Trousseau, observations of, on the pulse during sleep, [6]
Tuberculosis of the cerebral membranes, [55]
Tully’s Powder, [67]
Tumors of the brain, [55]
Turkish baths, [60]
Turpentine, [63]
Typhoid fever, insomnia during, [64]
treatment of, with baths, [74]
treatment of, with musk, [68]
treatment of, with Tully’s Powder, [67]
Typhus fever, treatment of, with musk, [68]
Unconsciousness, produced by compression of the carotid arteries, [27]
relation of, to modifications of the cerebral circulation, [25]
Urea, elimination of, during sleep, [9]
Urine, secretion of, during sleep, [9]
Uterine colic, [81]
Valerian, [68], [109]
Valerianate of ammonia, [68]
of zinc, [68]
Venereal act, a cause of sleep, [19]
Vierordt, observations of, on the duration of sleep, [110]
Visions, character of, [119]
of the ancient prophets, [161]
Voit, observations of, on oxidation in the tissues, [9]
on respiration during sleep, [6]
Volition, cessation of, during sleep, [3]
Wakefulness, [38]
causes of, [39]
dependence of, upon instability of cerebral protoplasm, [22]
Warburton, Rev. Canon, clairvoyant dream of, [146]
Weariness, a cause of sleep, [1]
Wharton and Stillé, on sleep-drunkenness, [181]
Whooping-cough, treatment of, with belladonna, [69]
Wind, effect of, upon sleep, [45]
Wine, effects of, [76]
use of, in the insomnia of old age, [78]
Ziemssen, von, on the use of baths, [73]