Mesmer promoted his system of treatment, based on his confused doctrine of a universal magnetic fluid influencing tides and men alike, with books and great personal showmanship. His treatment became such a popular health care sensation in France that it was as much a social movement as a medical practice. The ancien régime considered the leaders of the animal magnetism movement to be politically dangerous.The attention Mesmer directed toward hypnosis and suggestion in psychiatry led eventually to its scientific investigation by Braid and others. It also led to the more scientific development of suggestion in treatment, which has been termed after him “mesmerism”. Following an enquiry instituted by Louis XVI, Mesmer’s career came to an abrupt end. English translations by G. Frankau, 1948. Digital facsimile of the 1779 edition from the Internet Archive at this link.