[Illustration: PLATE X—Restoration of Tholos (Defrasse)] What was the purpose of the Tholos? Defrasse and Lechat believe it was a drinking-fountain, a sort of pump-room, in which in old times a healing spring arose; if so, we can imagine the gouty Athenian being sent here to drink large draughts from the holy spring, he envying meanwhile Methe and her occupation on the wall before him. The foundations are curious, consisting of a series of circular walls forming a labyrinth, every part of which must necessarily be traversed by the explorer seeking the central space, Plate XI. [Illustration: PLATE XI—Foundation of Tholos] MM. Defrasse and Lechat think this singularly constructed basement was a water cistern from which the ‘pump-room’ above was supplied. The difficulties attending this rather attractive hypothesis are—(_a_) that the word ‘Thymele’ means a sacrificing place; (_b_) Pausanias speaks of the Tholos and of the sacred well as though they were entirely distinct places; (_c_) after careful search I can find no trace of a water conduit; (_d_) the basement space, I may say confidently, was not cemented, either on wall or floor, as in all probability it would have been if to hold water. Not improbably the Tholos was employed for minor sacrifices, and perhaps the labyrinth below may have been associated with some mysterious Asklepian rite of which we are now ignorant; _e.g._, the labyrinth may have been the home of the sacred serpents. We do not know what were the domestic economics of these creatures; they, in an especial degree, were the incarnation of the god. They were treated by the sick with the utmost veneration; perhaps this curious basement structure was their retreat, and conceivably the upper stage of the Tholos was employed for the offering of sacrifices to them as representatives of the god. Perhaps the sacrificial cakes (πόπανα) were here offered to them. An aperture in the floor may have been provided allowing the passage of the serpents from the labyrinth to the sacrificing place above. We know that the sick were in the habit of offering these cakes to the serpents as a matter of common usage. [Illustration: PLATE XII—Restoration of Temple of Artemis (R.C.)] Plate I, Letter _F_. The Temple of Artemis is smaller than that of Asklepios (see Plate XII); the eaves were decorated by a rich cornice of sculptured heads of dogs, the attribute of Artemis-Hekate. She, the sister of Apollo, was a divinity of healing and succour, the chaste moon goddess, who healed Æneas. Acroteria of Victories decorated the eastern gable; within was a row of marble columns, and externally stood a triple figure of Artemis-Hekate, and an altar.