Early American mesmeric societies: a historical study.

Following an unsuccessful attempt by Mesmer to bring animal magnetism to the United States in 1784 through the Marquis de Lafayette, there was a period of little activity there for several decades. Then, concurrent with its revival in Europe and led by a few American practitioners who had been trained in France, several early societies of American magnetizers were founded beginning about 1815. These were initially organized in New York City and subsequently in New Orleans, Boston, Clinton, Cincinnati, Louisville, and Philadelphia. They played an important role in the development of hypnosis in America.