Further on, in front of the fifth column on either side, was a marble herm. That on the right is still in place and is seen in Plate II. It is of fine workmanship, and clearly belongs to the pre-Roman period; it represents Hermes, or Mercury. The god appears as a youth standing with his mantle drawn over the back of his head; the face, with a placid, serious, mild expression, is inclined a little forward. In this form Mercury was honored as the presiding divinity of the palaestra, the god of gymnastic exercises; we shall find him in the same guise later in the court of the Stabian Baths (p. 200). How this type of Hermes came to be chosen for the place of honor in athletic courts is by no means clear; it was certainly designed originally to represent him as a god of death, the Psychopompus, conductor of souls to the Underworld. The worship of Mercury here as a god of gymnastic exercises would not be in harmony with the surroundings; we should rather believe that the Pompeians, having placed him in such close relation with Apollo, god of the death-dealing shaft, and the earth goddess, Maia, associated more serious ideas with his image. [Illustration: PLATE II.--COURT OF THE TEMPLE OF APOLLO] The herm on the opposite side of the court probably represented Maia. No trace of it has been found; the female herm in the Naples Museum formerly assigned to this place is now known to have been brought from Rome. In Greek mythology, the mother of Hermes was Maia, the daughter of Atlas; and this relationship, by a common confusion, was transferred to the Italian Maia, who was originally goddess of the spring, and gave her name to the month of May. The assignment of the herm opposite Mercury to Maia is based upon a number of inscriptions which establish the existence of a cult of Mercury and Maia in Pompeii. From the same source we learn that with the worship of these two that of Augustus was intimately associated; there are few better illustrations of the development of emperor worship in the Early Empire. These inscriptions were found in different places, none of them in their original location. They are dedications once attached to votive offerings, of which one was set up each year by a college of priests, consisting of slaves and freedmen, under the general direction of the city authorities. The official title of this college at first, certainly to 14 B.C., was _Ministri Mercurii Maiae_, 'Servants of Mercury and Maia'; the word _minister_ indicates a low order of priesthood. The worship of the emperor was then added, and the priests were called 'Servants of Augustus, Mercury, and Maia.' Still later, at least as early as 2 B.C., the names of the two divinities were dropped, and the priests were designated simply as 'Servants of Augustus.'