Straight downward, two or three thousand feet below him, Perseus perceived a small island, with the sea breaking into white foam all around its rocky shore, except on one side, where there was a beach of snowy sand. He descended towards it, and, looking earnestly at a cluster or heap of brightness, at the foot of a precipice of black rocks, behold, there were the terrible Gorgons! They lay fast asleep, soothed by the thunder of the sea; for it required a tumult that would have deafened everybody else to lull such fierce creatures into slumber. The moonlight glistened on their steely scales, and on their golden wings, which drooped idly over the sand. Their brazen claws, horrible to look at, were thrust out, and clutched the wave-beaten fragments of rock, while the sleeping Gorgons dreamed of tearing some poor mortal all to pieces. The snakes, that served them instead of hair, seemed likewise to be asleep; although, now and then, one would writhe, and lift its head, and thrust out its forked tongue, emitting a drowsy hiss, and then let itself subside among its sister snakes. The Gorgons were more like an awful, gigantic kind of insect--immense, golden-winged beetles, or dragon-flies, or things of that sort,--at once ugly and beautiful,--than like anything else; only that they were a thousand and a million times as big. And, with all this, there was something partly human about them, too. Luckily for Perseus, their faces were completely hidden from him by the posture in which they lay; for, had he but looked one instant at them, he would have fallen heavily out of the air, an image of senseless stone. "Now," whispered Quicksilver as he hovered by the side of Perseus,-- "now is your time to do the deed! Be quick, for, if one of the Gorgons should awake, you are too late." "Which shall I strike at?" asked Perseus, drawing his sword and descending a little lower. "They all three look alike. All three have snaky locks. Which of the three is Medusa?" It must be understood that Medusa was the only one of these dragon- monsters whose head Perseus could possibly cut off. As for the other two, let him have the sharpest sword that ever was forged, and he might have hacked away by the hour together, without doing them the least harm. "Be cautious," said the calm voice which had before spoken to him. "One of the Gorgons is stirring in her sleep, and is just about to turn over. That is Medusa. Do not look at her. The sight would turn you to stone. Look at the reflection of her face and figure in the bright mirror of your shield."