Caduceus as a symbol of medicine worth noting that hospital stewards were not physicians; they played a supporting role preparing drugs for surgeons, supervising nurses and cooks, maintaining accounting and medical records, and in emergencies sometimes performed minor surgery or provided prescriptions. Later, in 1871, the Surgeon General designated the caduceus as the seal of the Marine Hospital Service (destined to become the U.S. Public Health Service in 1912). Gershen states that the change was for aesthetic reasons, whereas Friedlander states the caduceus was adopted by the Marine Hospital Service "because of its relationship with merchant seamen and the maritime industry". The caduceus was formally adopted
Crosier One is tau-shaped, with curved arms, surmounted by a small cross. The other has a top comprising a pair of sculptured serpents or dragons curled back to face each other, with a small cross between them. The symbolism in the latter case is of the bronze serpent made by Moses as related in . It is also reminiscent of the caduceus of Hermes or the rod of the ancient Greek god Asclepius, whose worship was centered around the Aegean, including Asia Minor, indicating the role of the bishop as healer of spiritual diseases. The staff of Moses is first mentioned