We are now going to see the astronomer, the savant, the man of letters, struggling against passions of every kind, excited by the famous question of animal magnetism.
At the beginning of the year 1778, a German doctor established himself at Paris. This physician could not fail of succeeding in what was then styled high society. He was a stranger. His government had expelled him; acts of the greatest effrontery and unexampled charlatanism were imputed to him.
His success, however, exceeded all expectations. The Gluckists and the Piccinists themselves forgot their differences, to occupy themselves exclusively with the new comer.
Mesmer, since we must call him by his name, pretended to have discovered an agent till then totally unknown both in the arts and in physics; an universally distributed fluid, and serving thus as a means of communication and of influence among the celestial globes;—a fluid capable of flux and reflux, which introduced itself more or less abundantly into the substance of the nerves, and acted on them in a useful manner,—thence the name of animal magnetism given to this fluid.
Mesmer said: "Animal magnetism may be accumulated, concentrated, transported, without the aid of any intermediate body. It is reflected like light; musical sounds propagate and augment it."
Properties so distinct, so precise, seemed as if they must be capable of experimental verification. It was requisite, then, to be prepared for some instance of want of success, and Mesmer took good care not to neglect it. The following was his declaration: "Although the fluid be universal, all animated bodies do not equally assimilate it into themselves; there are some even, though very few in number, that by their very presence destroy the effects of this fluid in the surrounding bodies."
So soon as this was admitted, as soon it was allowed to explain instances of non-success by the presence of neutralizing bodies, Mesmer no longer ran any risk of being embarrassed. Nothing prevented his announcing, in full security, "that animal magnetism could immediately cure diseases of the nerves, and mediately other diseases; that it afforded to doctors the means of judging with certainty of the origin, the nature, and the progress of the most complicated maladies; that nature, in short, offered in magnetism a universal means of curing and preserving mankind."
Before quitting Vienna, Mesmer had communicated his systematic notions to the principal learned societies of Europe. The Academy of Sciences at Paris, and the Royal Society of London, did not think proper to answer. The Academy of Berlin examined the work, and wrote to Mesmer that he was in error.
Some time after his arrival in Paris, Mesmer tried again to get into communication with the Academy of Sciences. This society even acceded to a rendezvous. But, instead of the empty words that were offered them, the academicians required experiments. Mesmer stated—I quote his words—that it was child's play; and the conference had no other result.
The Royal Society of Medicine, being called upon to judge of the pretended cures performed by the Austrian doctor, thought that their agents could not give a well-founded opinion "without having first duly examined the patients to ascertain their state." Mesmer rejected this natural and reasonable proposal. He wished that the agents should be content with the word of honour and attestations of the patients. In this respect, also, the severe letters of the worthy Vicq-d'Azyr put an end to communications which must have ended unsatisfactorily.