It has been already observed that the Dioscuri are commonly represented with the skull-cap, because they were worshipped, as the reader will have perceived, as the guardians of the mariner[641]; but on ancient vases we find them sometimes painted with the petasus; and if this was the same with the πῖλος Λακωνικὸς, it would coincide with their origin as natives of Sparta. In [Plate IX.] Fig. 16, an example is shown, on one of Sir William Hamilton’s vases, in which their attire resembles that of the Athenian ephebi. They wear boots and a tunic, over which one of them also wears the scarf or chlamys. They are conducted by the goddess Night.
In like manner Mercury, as a native of Arcadia, might be expected to wear “the Arcadian hat.” In the representations of this deity on works of ancient art, the hat, which is often decorated with wings to indicate his office of messenger, as his talaria also did[642], has a great variety of forms, and sometimes the brim is so narrow, that it does not differ from the cap of the artificer already described, or the πῖλος in its ordinary form. These hats, with a brim of but small dimensions, agree most exactly in appearance with the cheapest hats of undyed felt, now made in the United States and Great Britain[643]. On the heads of the rustics and artificers in our streets and lanes we often see forms the exact counterpart of those which we most admire in the works of ancient art. The petasus is also still commonly worn by agricultural laborers in Greece and Asia Minor.
[642] Servius (on Virg. Æn. viii. 138) says, that Mercury was supposed to have wings on his petasus and on his feet, in order to denote the swiftness of speech, he being the god of eloquence.
[643] These hats are sold in the shops for sixpence, ninepence, or a shilling each.
A bas-relief in the Vatican collection[644], represents the birth of Hercules, and contains two figures of Mercury. In one he carries the infant Hercules, in the other the caduceus. In both he wears a large scarf, and a skull-cap, like that of Dædalus[645], without a brim. This example therefore proves that, although the petasus, as distinguished from the pileus, was certainly the appropriate attribute of Mercury[646], yet the artists of antiquity sometimes took the liberty of placing on his head the skull-cap instead of the hat, just as we have seen that they sometimes made the reverse substitution in the case of the Dioscuri.
[644] Museo Pio-Clementino, tom. iv. tav. 37.
[645] See [Plate VIII.] Fig. 8.
[646] See Brunck, Anal. ii. 41, and Arnobius, Adv. Gentes, lib. vi. See also Ephippus, ap. Athen. xii. 53. p. 537 F. Casaub.
It is remarkable that the person who acted the part of a Silenus in the Dionysiac procession instituted by Ptolemy Philadelphus at Alexandria, wore a hat and a golden caduceus (Athen. v. 27. p. 198 A.). In this case the imagination appears to have been indulged in decorating a mere festive character with the peculiar attributes of Mercury. It is added, that various kinds of chariots were driven by “boys wearing the tunics of charioteers and petasi” (Athen. v. p. 200 F.). This would be in character, being agreeable to the custom of the Grecian youth.