My opinion is that Amphiaraus devoted him self most to the exposition of dreams. It is manifest that, when his divinity was established, it was a dream oracle that he set up. One who has come to consult Amphiaraus is wont first to purify himself. The mode of purification is to sacrifice to the god, and they sacrifice not only to him but also to all those whose names are on the altar. And when all these things have been first done, they sacrifice a ram, and, spreading the skin under them, go to sleep and await enlightenment in a dream.