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
Serpents in the Bible Eden. Throughout the Hebrew Bible, it is also used in conjunction with "saraph" to describe vicious serpents in the wilderness. The "tannin", a dragon monster, also occurs throughout the Hebrew Bible. In the Book of Exodus, the staffs of Moses and Aaron are turned into serpents, a "nāḥāš" for Moses, a "tannin" for Aaron. In the New Testament, the Book of Revelation makes use of "ancient serpent" and "the Dragon" several times to identify Satan or the devil. (; ) The serpent is most often identified with the hubristic Satan, and sometimes with Lilith. The story of the Garden of