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.
Serpent Column his "Dürr-i Meknûn", written around the time of the Fall of Constantinople. He states that it is a hollow bronze of intertwined snakes, threeheaded, a talisman for the citizens against snake bites. Between fifty and one hundred years after the Turkish conquest of Constantinople, the jaw of one of the three serpent heads was documented missing. The accepted version states that Mehmed II shattered it upon entering the city in triumph as its conqueror. Later, at the end of the 17th century, all three of the serpent heads were destroyed. Again, although there is legend that a drunken Polish nobleman