Hypnotism and hypnotic suggestion; a scientific treatise on the uses and possibilities of hypnotism, suggestion and allied phenomena (1900)
Clark, Charles S. (Charles Samuel), Neal, E. Virgil · Rochester, N.Y., New York state publishing company · leaf 41
or several hours. Thisperiod is as variable as the time necessary for the induction of thestate. Of the many positions in which crayfish have been made toremain by this simple method, perhaps the oddest are standingon the head and hanging by the tail or abdomen. It is easy tostand the animal… … Frequently an animal will hold this posture for five or tenminutes. Similarly when suspended by the tail, the crayfish,after a few struggles, becomes quiet and remains thus for a longtime. These are only a few instances of the strange positions inwhich crayfish have been kept; there are many others…
Hypnotism · Therapeutics, Suggestive
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