DREAMS.
Physiology of perception and of dreaming — Definition of the act of dreaming — Revery — Production of illusions and hallucinations by drugs and by disease — Effects of hasheesh — Effects of acute disease — Association of ideas — Memory of past sensations — Dreams produced by excitement of the different organs of sense — Persistence of dream-impressions after waking — Experience of M. Baillarger — Of Professor Jessen — Belief of savages in the reality of dreams — Sensory dreams — Intellectual dreams — Repetition of dreams — Incoherence of dreams — Cause of the superior vividness of certain dreams — Duration of dreams — Dreams excited by morbid states of the body — Prophetic dreams — Their causes — Clairvoyant dreams — Hallucinatory dreams — Sir Edmund Hornby’s experience — Hallucinations — Case related by Dr. E. H. Clarke — Revelation through dreams — Revival of memory in dreams. [116]
SOMNAMBULISM.
Causes of somnambulism — Physiology of somnambulism — Varieties of the disorder — Maury’s classification — Classification of Ball and Chambard — Diagrammatic representation of their classification — Somnambulic lethargy — Illustrative cases — Somnambulic dreams — Night terrors — Somnolentia or sleep-drunkenness — Sleep-walking — Illustrative cases — Condition of the special senses in somnambulism — Relation of memory to the somnambulic paroxysm — Illustrative cases — Occasional recollection of incidents connected with the somnambulic dream — Resemblances between the somnambulic state and the condition of post-epileptic mania — Somnambulic visions — J. P. Frank’s case — Mesnet’s case — Somnambulic life — Its likeness with the double-consciousness of certain forms of epilepsy — Illustrative cases — General theory of somnambulism. [166]
ARTIFICIAL SOMNAMBULISM OR HYPNOTISM.
Antiquity of the phenomena of hypnotism — Modern observations — Physical conditions favorable to the phenomena — Methods of inducing the hypnotic state — Duration of hypnotic sleep — Rudimentary states of hypnotism — Investigations of the Society for Psychical Research — Mind-reading — Physiological explanation of the process — Charcot’s observations on artificial somnambulism — Cataleptic variety of the hypnotic state — Lethargic variety — Somnambulic variety — Hypnotic clairvoyance — Exalted sensibility of the brain in hypnotic states — Susceptibility to suggestions from without — Phenomena of so-called spiritualism — Table-rapping — Planchette — Therapeutical employment of hypnotism — Metaphysical healing. [212]