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            Achelous 
            Achelous, the horned king of Euphrates and the oldest of the male
            Oceanids (see
            Poseidon, Oceanus, and Tethys), once wrestled with Heracles, the greatest of Greek heroes, over
            a woman both desired for a bride. "They came together..." wrote the
            5th-century B.C. Greek dramatist Sophocles in his play
            The Women of Trachis. "Then was there confusion of
            sounds—the beating of fists, the twang of bow, the clash of
            bull's horns; there were the wrestling holds, the painful collision
            of heads, and the groans of both." In the struggle, during which
            Achelous transformed himself into a bull, Heracles broke off one of
            Achelous's horns (shown here on top of his forehead). But later a
            victorious Heracles returned the horn to him. In exchange, Achelous
            gave Heracles the miraculous horn of Amalthea, which provided its
            owner with all the food and drink he could want. This was the
            cornu copiae, or horn of plenty.
           
          
          
          
          
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