Caduceus is a continuation of the older Indo-European dragon-slayer motif. Wilhelm Heinrich Roscher (1913) pointed out that the serpent as an attribute of both Hermes and Asclepius is a variant of the "pre-historic semi-chthonic serpent hero known at Delphi as Python", who in classical mythology is slain by Apollo. One Greek myth of origin of the caduceus is part of the story of Tiresias, who found two snakes copulating and killed the female with his staff. Tiresias was immediately turned into a woman, and so remained until he was able to repeat the act with the male snake seven years later.
Snake-stone Snake-stone A snake-stone, also known as a viper's stone, black stone, " schwarze Steine", " pierres noire", "piedritas negras", serpent-stone, or nagamani is an animal bone or stone used as folk medicine for snake bite in Africa, South America, and Asia. The early Celtic era European Adder stone is also called a snake stone, and is usually made from coloured glass, often with holes. Its purpose is for protection against evil spirits rather than snake bite. Experts are concerned that relying on a black stone may prevent snakebite victims from seeking appropriate medical help. No scientific study has shown that