The most famous, however, of this class of oracles, was that of Amphiaraus, the father of Amphilocus, which was one of the five principal oracles of Greece; he had signalized himself as a sapient soothsayer in the first Theban war; and his oracle was situated at Oropos, on the borders of Boetia and Attica. Of all others this deserves our most particular attention, as it was resorted to more frequently in cases of infirmity and disease, than in any other circumstances. His responses were always delivered in dreams, in whose interpretation, as he was the first to possess that faculty. Pausanias says he received divine honours. Those who repaired to Amphiaraus's oracle to supplicate his aid, laid themselves down in the manner we have just related, after several preparatory lustrations and sacrifices, on the skin of a ram slain in honour of the god, and awaited the dreams, which were to unfold the means of their different cures. Lustrations and sacrifices were not, however, the only preparatives for inducing the visionary disposition. The priests subjected the patients to various others, which Philostratus affirms[97] to have been very instrumental towards rendering the sleeper's mind clear and unclouded. Part of these preparatives consisted in one day's abstinence from eating, and three, nay, even in some cases, fifteen days' abstinence from wine, the common beverage of the Greeks. This was the practice also with other oracles; nor were the priests in the meantime insensible to their own interests on these occasions; for those who were cured by Amphiaraus's revelations were permitted to bathe in the sacred waters of a fountain, into which they were enjoined to cast pieces of gold and silver, which were destined, most probably, to sweeten the labours of his officiants. The oracles, whose intervention was principally or altogether sought for the healing of the sick by means of divination founded on dreams, were scattered over Greece, Italy, Egypt, and other countries. As regards those of Egypt, it may be remarked, that although many of the Egyptians believed there were thirty-six demons, or aerial deities, each of whom had the care of a certain portion of the human frame, and when that portion was diseased, would heal it on the patient's earnest prayer, yet a variety of their oracles, such as those of Serapis, Isis, and Phthas, the Hephaestos of the Greeks, appertained to the class, which is the present object of our inquiry.