Franz Mesmer

Franz Anton Mesmer (/ˈmɛzmər/ MEZ-mər; German: [ˈmɛsmɐ]; 23 May 1734 – 5 March 1815) was a German physician with an interest in astronomy. He theorized the existence of a process of natural energy transference occurring between all animate and inanimate objects; this he called "animal magnetism", later referred to as mesmerism. Mesmer's theory attracted a wide following between about 1780 and 1850, and continued to have some influence until the end of the 19th century. In 1843, the Scottish doctor James Braid proposed the term "hypnotism" for a technique derived from animal magnetism; today the word "mesmerism" generally functions as a synonym of "hypnosis". Mesmer also supported the arts, specifically music; he was on friendly terms with Haydn and Mozart.^{[citation needed]}

Mesmer was born in the village of Iznang (now part of the municipality of Moos), on the shore of Lake Constance in Swabia. He was a son of master forester Anton Mesmer (1701–after 1747) and his wife, Maria Ursula (née Michel; 1701–1770). After studying at the Jesuit universities of Dillingen and Ingolstadt, he took up the study of medicine at the University of Vienna in 1759. In 1766 he published a doctoral dissertation with the Latin title De planetarum influxu in corpus humanum (On the Influence of the Planets on the Human Body), in which he discussed the influence of the moon and the planets on the human body and disease.

Building largely on Isaac Newton's theory of the tides, Mesmer expounded on certain tides in the human body that might be accounted for by the movements of the sun and moon. Evidence assembled by Frank A. Pattie suggests that Mesmer plagiarized most of his dissertation from other works, including De imperio solis ac lunae in corpora humana et morbius inde oriundis (1704) by Richard Mead, an eminent English physician and Newton's friend. However, in Mesmer's day doctoral theses were not expected to be original.

In January 1768, Mesmer married Anna Maria von Posch, a wealthy widow, and established himself as a doctor in Vienna. In the summers he lived on a splendid estate and became a patron of the arts. In 1768, when court intrigue prevented the performance of La finta semplice (K. 51), for which the twelve-year-old Wolfgang Amadeus Mozart had composed 500 pages of music, Mesmer is said to have arranged a performance in his garden of Mozart's Bastien und Bastienne (K. 50), a one-act opera, although Mozart's biographer Nissen found no proof that this performance actually took place. Mozart later immortalized his former patron by including a comedic reference to Mesmer in his opera Così fan tutte.

In 1774, Mesmer produced an "artificial tide" in a patient, Francisca Österlin, who suffered from hysteria, by having her swallow a preparation containing iron and then attaching magnets to various parts of her body. She reported feeling streams of a mysterious fluid running through her body and was relieved of her symptoms for several hours. Mesmer did not believe that the magnets had achieved the cure on their own. He felt that he had contributed animal magnetism, which had accumulated in his work, to her. He soon stopped using magnets as a part of his treatment.

In the same year Mesmer collaborated with Maximilian Hell.

In 1775, Mesmer was invited to give his opinion before the Munich Academy of Sciences on the exorcisms carried out by Johann Joseph Gassner (Gaßner), a priest and healer who grew up in Vorarlberg, Austria. Mesmer said that while Gassner was sincere in his beliefs, his cures resulted because he possessed a high degree of animal magnetism. This confrontation between Mesmer's secular ideas and Gassner's religious beliefs marked the end of Gassner's career and, according to Henri Ellenberger, the emergence of dynamic psychiatry.

The scandal that followed Mesmer's only partial success in curing the blindness of an 18-year-old musician, Maria Theresia Paradis, led him to leave Vienna in 1777. In February 1778, Mesmer moved to Paris, rented an apartment in a part of the city preferred by the wealthy and powerful, and established a medical practice. There he would reunite with Mozart, who often visited him. Paris soon divided into those who thought he was a charlatan who had been forced to flee from Vienna and those who thought he had made a great discovery.