Caduceus

Mythology The Homeric Hymn to Hermes relates how his half brother Apollo was enchanted by Hermes's music from his lyre fashioned from a tortoise shell, which Hermes kindly gave to him. Apollo in return gave Hermes the caduceus as a gesture of friendship. The association with the serpent thus connects Hermes to Apollo, as later the serpent was associated with Asclepius, the "son of Apollo". The association of Apollo with the serpent 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. This staff later came into the possession of the god Hermes, along with its transformative powers. Another myth suggests that Hermes (or Mercury) saw two serpents entwined in mortal combat. Separating them with his wand he brought about peace between them, and as a result the wand with two serpents came to be seen as a sign of peace. In Rome, Livy refers to the caduceator who negotiated peace arrangements under the diplomatic protection of the caduceus he carried. Iconography In some vase paintings ancient depictions of the Greek kerukeion are somewhat different from the commonly seen modern representation. These representations feature the two snakes atop the staff (or rod), crossed to create a circle with the heads of the snakes resembling horns. This old graphic form, with an additional crossbar to the staff, seems to have provided the basis for the graphical sign of Mercury (☿) used in Greek astrology from late antiquity. ==Origin and comparative mythology==

lekythos, , attributed to the Tithonos Painter The term kerukeion denoted any herald's staff, not necessarily associated with Hermes in particular. In his study of the cult of Hermes, Lewis Richard Farnell (1909) assumed that the two snakes had simply developed out of ornaments of the shepherd's crook used by heralds as their staff. This view has been rejected by later authors pointing to parallel iconography in the Ancient Near East. It has been argued that the staff or wand entwined by two snakes was itself representing a god in the pre-anthropomorphic era. Like the herm or priapus, it would thus be a predecessor of the anthropomorphic Hermes of the classical era. Ancient Near East , on the libation vase of Sumerian ruler Gudea, of king Ashoka in India, third to second century BC William Hayes Ward (1910) discovered that symbols similar to the classical caduceus sometimes appeared on Mesopotamian cylinder seals. He suggested the symbol originated some time between 3000 and 4000 BC, and that it might have been the source of the Greek caduceus. A.L. Frothingham incorporated Ward's research into his own work, published in 1916, in which he suggested that the prototype of Hermes was an "Oriental deity of Babylonian extraction" represented in his earliest form as a snake god. From this perspective, the caduceus was originally representative of Hermes himself, in his early form as the Underworld god Ningishzida, "messenger" of the "Earth Mother". The caduceus is mentioned in passing by Walter Burkert as "really the image of copulating snakes taken over from Ancient Near Eastern tradition". In Egyptian iconography, the Djed pillar is depicted as containing a snake in a frieze of the Dendera Temple complex. India The caduceus also appears as a symbol of the punch-marked coins of the Maurya Empire in India, in the third or second century BC. Numismatic research suggest that this symbol was the symbol of the Buddhist king Ashoka, his personal "Mudra". This symbol was not used on the pre-Mauryan punch-marked coins, but only on coins of the Maurya period, together with the three arched-hill symbol, the "peacock on the hill", the triskelis and the Taxila mark. It also appears carved in basalt rock in few temples of western ghats. ==Early modern use==

During the early modern period, the caduceus was used as a symbol of rhetoric (associated with Mercury's eloquence). File:A seated woman with a scroll and two books, holding a caduce Wellcome V0047927.jpg|Engraving by Hendrik Goltzius (1558–1617) File:Rhetoric- a young woman standing in a decorated interior with a caduceus in her right hand and a closed fan in her left hand, from the series 'The liberal arts' (Les arts liberaux) MET DP829049.jpg|La Retorique (1633–35) File:Allegory of Rhetoric.jpg|Allegory of Rhetoric (1650) ==Modern use==

Association with printing , showing the caduceus that is part of the machine's elaborate decoration The caduceus has sometimes been associated with printing. Many early printers such as Erhard Ratdolt, Johann Froben and Johannes Tacuinus used it as their printer's mark. This was often in association with other symbols, such as a cornucopia or a Pegasus. It was also used on the Columbian press, a type of printing press widely used in the 19th century and known for its elaborate scheme of symbolic ornamentation. The caduceus was used as a publisher's mark by John Churchill, who began publishing medical texts in London in the 1830s. This may have contributed to the symbol's association with medicine. Symbol of commerce A simplified caduceus is found in dictionaries, as a "commercial term" entirely in keeping with the association of Hermes with commerce. In this form, the staff is often depicted with two winglets and the snakes omitted or reduced to a small ring in the middle. (Tax and Customs administration). The emblems of Belarus Customs and China Customs are a caduceus crossing with a golden key. The emblem of the Federal Customs Service of Russia has a caduceus crossing with a torch on the shield. The coat of arms of Kyiv National University of Trade and Economics of Ukraine has two crossed torches surmounted by a caduceus on the shield. Confusion with Rod of Asclepius ==Computer coding==

For use in documents prepared on computer, the symbol has code point in Unicode, at . There is a similar glyph encoded at , an alchemical symbol at , and an astrological one at . [For information on how to enter the symbol, see Unicode input (or copy/paste it directly).] These symbols are not provided in all fonts, especially older ones. ==Coats of arms and flags==

The symbol is depicted on multiple coats of arms and flags. ==See also==