Pardon me, then, if I am now set upon it; for not Alcmæon himself, I suppose, could endure to wander further when he had found the Echinades. “Alcmæon slew his mother; but the awful Erinnys, the avenger of matricide, inflicted on him a long and terrible punishment, depriving him of his reason, and chasing him about from place to place without the possibility of repose or peace of mind.  He craved protection and cure from the god at Delphi, who required him to dedicate at the temple, as an offering, the precious necklace of Kadmus, that irresistible bribe which had originally corrupted Eriphyle.  He further intimated to the unhappy sufferer that, though the whole earth was tainted with his crime and had become uninhabitable for him, yet there was a spot of ground which was not under the eye of the sun at the time when the matricide was committed, and where, therefore, Alcmæon might yet find a tranquil shelter.  The promise was realised at the mouth of the river Achelous, whose turbid stream was perpetually depositing new earth and forming additional islands.  Upon one of these Alcmæon settled permanently and in peace.”  Grote, Hist. Gr. i. 381.