Again there is every reason to suppose that S. Elias[72] whose chapels crown countless hilltops is merely the Christian successor to Helios, the Sun. The two names, which have only a moderate resemblance in the nominative, coincide for modern pronunciation in the genitive; and the frequency with which that case was needed in speaking of the church or the mountain-peak dedicated to one or the other may have facilitated the transition. Besides inheriting the mountain sanctuaries at which the worship of the Sun may have persisted from a very early age, S. Elias has also taken over the chariot of his predecessor, and thunder is sometimes attributed to the rolling of its wheels. In other cases, without any resemblance of names, identity of attributes or functions suggested the substitution of saint for pagan deity. Hermes who in old times was the chief ‘angel’ or messenger of the immortals (ἄγγελος ἀθανάτων) was naturally succeeded by the archangel Michael, upon whom therefore devolves the duty of escorting men’s souls to Hades; and to this day the men of Maina tell how the archangel, with drawn sword in his hand instead of the wand of his prototype, may be seen passing to and fro at the mouth of the caves of Taenarus through which Heracles made his ascent with Cerberus from the lower world, and which is still the best-known descent thereto. The supplanting of Hermes by Michael is well illustrated in the sphere of art also by a curious gem. The design is an ordinary type of Hermes with his traditional cap, and at his side a cock, the symbol of vigilance and of gymnastic sport; by a later hand has been engraved the name ‘Michael’; the cock remained to be interpreted doubtless as the Christian symbol of the awakening at the last day of them that sleep[73]. The conversion of pagan temples or of their sites to the purposes of Christianity tells the same tale. The virgin goddess of Athens ceded the Parthenon to the Blessed Virgin of the Christians. The so-called Theseum, whether Theseus or Heracles was its original occupant, was fitly made over to the warrior S. George: but none the less what seems to have been an old pagan festival, known as the ρουσάλια (Latin _rosalia_)[74], continues to this day to be celebrated with dancing and feasting in its precincts. The Church of the Annunciation at Tenos, so famous throughout the Greek world for its miracles of healing, stands on the foundations of Poseidon’s ancient sanctuary, and includes in its precincts a holy spring (ἅγι̯ασμα) whose healing virtues, we can hardly doubt, were first discovered by the pagans: for Poseidon was worshipped in Tenos under the title of the ‘healer’ (ἰατρός)[75]. Indeed throughout the length and breadth of the land the traveller will find churches built with the material of the old temples or superimposed upon their foundation, and cannot fail to detect therein evidence of a deliberate policy on the part of the Church.