Ce livre traite d'un rite m dical ancien, dont les origines remontent au Moyen ge. Il tudie galement les diff rentes traditions qui ont influenc ce rite, ainsi que leur impact sur la m decine moderne. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations...