It was now deep night. Perseus looked upward and saw the round, bright, silvery moon and thought that he should desire nothing better than to soar up thither and spend his life there. Then he looked downward again and saw the earth, with its seas and lakes, and the silver course of its rivers, and its snowy mountain peaks, and the breath of its fields, and the dark cluster of its woods, and its cities of white marble; and with the moonshine sleeping over the whole scene, it was as beautiful as the moon or any star could be. And among other objects he saw the island of Seriphus, where his dear mother was. Sometimes he and Quicksilver approached a cloud that at a distance looked as if it were made of fleecy silver, although when they plunged into it they found themselves chilled and moistened with gray mist. So swift was their flight, however, that in an instant they emerged from the cloud into the moonlight again. Once a high-soaring eagle flew right against the invisible Perseus. The bravest sights were the meteors that gleamed suddenly out as if a bonfire had been kindled in the sky and made the moonshine pale for as much as a hundred miles around them. As the two companions flew onward, Perseus fancied that he could hear the rustle of a garment close by his side; and it was on the side opposite to the one where he beheld Quicksilver, yet only Quicksilver was visible. "Whose garment is this," inquired Perseus, "that keeps rustling close beside me in the breeze?" "Oh, it is my sister's!" answered Quicksilver. "She is coming along with us, as I told you she would. We could do nothing without the help of my sister. You have no idea how wise she is. She has such eyes, too! Why, she can see you at this moment just as distinctly as if you were not invisible, and I'll venture to say she will be the first to discover the Gorgons." By this time, in their swift voyage through the air, they had come within sight of the great ocean and were soon flying over it. Far beneath them the waves tossed themselves tumultuously in mid-sea, or rolled a white surf line upon the long beaches, or foamed against the rocky cliffs, with a roar that was thunderous in the lower world, although it became a gentle murmur, like the voice of a baby half asleep, before it reached the ears of Perseus. Just then a voice spoke in the air close by him. It seemed to be a woman's voice and was melodious, though not exactly what might be called sweet, but grave and mild. "Perseus," said the voice, "there are the Gorgons." "Where?" exclaimed Perseus. "I cannot see them." "On the shore of that island beneath you," replied the voice. "A pebble dropped from your hand would strike in the midst of them." "I told you she would be the first to discover them," said Quicksilver to Perseus. "And there they are!"