Chapter II: Theory of Hypnotism

About 1840 the vaunted claims of the many clairvoyants were exposed before the French Academy of Medicine, which passed a resolution rejecting mesmerism altogether as unworthy of notice on the part of scientific men. The theory of a mesmeric fluid, until then the only one advanced, had evidently to be abandoned. Science with all its tests could find no such cause of the results produced. But in 1842 an English physician, Dr. James Braid, hit upon a more plausible theory. He conjectured that the actions of the mesmeric subject could be explained without a fluid by the suggestion of phantasms to him on the part of the mesmerizer. Dr. Carpenter, then a great authority, defended his theory; but the medical branch of the British Association disdained to consider the matter. Dr. Braid thought the mesmeric trance was only a state of somnambulism artificially brought about, and he coined the word _hypnotism_ to indicate the artificial sleep. Other attempts to promote the cause of hypnotism were made in the United States and other lands, but no very definite or scientific results were reached until 1878, when the celebrated Prof. Charcot and others made its nature and possibilities the subject of a thorough study and abundant experimentation at the Paris hospital of La Salpétrière and in other places. At present it is admitted by distinguished medical scientists that hypnotism is a reality, capable of being utilized for important purposes. Many effects have been demonstrated to be produced by it as real as any ordinary phenomena of nature. But on the explanation of their causes there hangs still a cloud of obscurity.

The Paris School of Doctors attribute the effects to physical causes, chief among which are diseases of the nerves. Those of Nancy trace the phenomena to a psychical source, namely, to suggestion--that is, action on the subject through his imagination excited by words, signs, or in any other manner. This appears to be, in the main, the theory of Dr. Braid vindicated by modern science. Probably enough, both schools are right in their way, the suggestions not taking effect except where nervous affections have prepared the way. The beneficial results claimed for hypnotism by the scientific men who have made its study a specialty are chiefly as follows: