In 1813 the naturalist Deleuze published a book entitled Histoire critique du magnétisme animal. Like his predecessors, he was chiefly interested in the therapeutic value of magnetism, and insisted that faith was necessary for effective treatment. On account of this condition any demonstration was impossible. He still held to the idea of a pervading fluid and maintained that the depth of the magnetic sleep depended upon the amount of the magnetic charge. Shortly after the appearance of Deleuze's book, interest in animal magnetism increased, and several journals dealing exclusively with the subject were started.
With the death of Mesmer in 1815 ended the first period in the history of the phenomena known as animal magnetism. Up to this time the generally accepted theory was that of a vital fluid which permeated every thing and person and through which one person influenced another. The second period extended from 1815-1841 when Braid discovered and formulated the method of operation. The third period reached from 1841-1887 during which there was careful and scientific study of the whole subject, and hypnotism came into repute as a healing measure. I am inclined to posit a fourth period, 1887 to the present time, for Myers' hypothesis of a subliminal self, or the theory of the subconsciousness, has made a great difference in the theory of hypnotism.
The second period began when Abbe Faria in 1814-15 came from India to Paris and gave public exhibitions, publishing the results of some of his experiments. He seated his subjects in an arm-chair, with eyes closed, and then cried out in a loud commanding voice, "Sleep." He used no manipulations and had no baquet, but he boasted of having produced five thousand somnambulists by this method. He opined that the state was caused by no unknown force, but rested in the subject himself. He agreed with the present generally accepted theory that all is subjective.
Following Faria, Bertrand and Noizet paved the way for the doctrine of suggestion notwithstanding their inclination toward animal magnetism. Experiments were performed at the Hôtel-Dieu in 1820 but later were prohibited. Through the influence of Foissac in 1826 the Academy of Medicine appointed a committee to examine the subject, and in 1831 a report acknowledging the genuineness of the phenomena was made, and therapeutic effects were frankly admitted. In 1837 the Academy appointed another commission to examine still further, for the members as a whole were not convinced. The report of this commission was largely negative.
After this the younger Burdin, a member of the Academy, proposed to award from his own purse a prize of 3,000 francs to any person who could read a given writing without the aid of his eyes, and in the dark. The existence of animal magnetism must stand or fall on this test. That was the difficulty during this period: the whole dispute was waged about, and experiments consisted in tests of, clairvoyance, transposition of the sense of sight, and other mystical phenomena, instead of dealing with the state as such. This, of course, made the struggle much easier for the opponents of mesmerism, but was largely the fault of the magnetizers. The Burdin prize was not awarded, and in 1840 Double proposed that the Academy should henceforth pay no further attention to animal magnetism, but treat the subject as definitely closed. This was certainly unfair and unscientific, but was the attitude assumed.
At the beginning of this period another series of tests was being performed in Germany, but after 1820 the belief in magnetism declined more and more. It flourished longest in Bremen and in Hamburg where Siemers was its advocate. From 1830-1840 Hensler and Ennemoser were the chief exponents in Bavaria. As the scientific investigators withdrew from the study, the charlatans and frauds entered the field, and the marvellous and occult were emphasized, so that in 1840 little general attention was paid to the subject.
Notwithstanding the efforts of the London physicians Elliotson and Ashburner, magnetism could obtain little footing in England during this period. Numerous investigations were made, however, and several publications were sent forth. Townshend, Scoresby, and Lee are names prominent in the study of the subject in England at this time. In the next period, though, an Englishman gives the impetus necessary for the successful pursuit of the study.
In 1841 the French magnetizer, La Fontaine, gave some public exhibitions in Manchester which attracted the attention of a physician by the name of James Braid. Through the aid rendered by Braid, animal magnetism blossomed into a science. He directed the subject into its proper field: he eschewed the occult and mysterious, and emphasized observation and experiment. It was Braid who gave us the word "hypnotism." At first a sceptic, he began experimenting and proved that fixity of gaze had in some way such an influence on the nervous system of the subject that he went off into a sleep. He therefore opined that the transmission of a fluid by the operator had no part in the matter.
He further showed that an assumed attitude changed the subject's sentiments in harmony with the attitude, and that the degree of sleep varied with different persons, and with the same person at different times. He also noted the acuteness of the senses during hypnosis, and that verbal suggestion would produce hallucinations, emotions, paralysis, etc. Therapeutics was a subject in which he was naturally interested, and his experiments on different diseases were frequent and valuable. Braid made some mistakes, as was natural, but his discoveries covered the field so well and his ideas were so sound that too much credit cannot be ascribed to him. At first he thought hypnotism (Braidism) was identical with animal magnetism, but later made the mistake of considering it analogous, and the two flourished side by side and independently.
Animal magnetism was first introduced into America in 1836 by Mr. Charles Poyan, a French gentleman. A few years later a certain Dr. Collyer lectured upon it in New England. New Orleans was, however, for a long time its chief centre. In 1848 Grimes, working independently, appears to have arrived at about the same conclusions as Braid. He showed that most of the hypnotic phenomena could be produced in the waking state in some subjects, by means of verbal suggestion. The phenomena were known under the name of electro-biology. In 1850 Darling went to England and introduced electro-biology, but it was soon identified with Braidism, and in 1853 Durand de Gros, who wrote under the pseudonym of Philips, exhibited the phenomena of electro-biology in several countries, but aroused little attention.