In 1784, animal magnetism, doctrine and medical practice, founded the Faculty of medicine of Paris. In agreement with the new treatment, doctor Deslon has numerous patients. Some agree to share their therapeutic experiences in public through stories signed accounts and go so far as to produce a plea in favor of Deslon in reaction to hostile reports to animal magnetism from the Academy of Sciences and the Royal Society of Medicine. So, this internal conflict at the Faculty of medicine turns into a medical question debated publicly in the name of the general interest by non-health professionals, patients and doctors. Creator of its own space of affirmation at the heart of medical debates, this new public is an actor with which medical experts must come to terms so as not to have to seek royal intervention. Composed of various elements, it denounces the despotism of the Faculty and its only purpose to safeguard its corporate interests.