E . the shining one, and so called from his father), the son of Helios ( q. v .); persuaded his father to allow him for one day to drive the chariot of the sun across the heavens, but was too weak to check the horses, so that they rushed off their wonted track and nearly set the world on fire, whereupon Zeus transfixed him with a thunderbolt, metamorphosed his sisters who had yoked the horses for him into poplars and their tears into amber.