Old Dan was Davy's uncle,--a grim, gray man, who said little, did his work faithfully, and was both father and mother to Davy, who had no parents, and no friends beyond the island. That was his world; and he led a quiet life among his playfellows,--the winds and waves. He seldom went to the main land, three miles away; for he was happier at home. He watched the sea-anemones open below the water, looking like fairy-plants, brilliant and strange. He found curious and pretty shells, and sometimes more valuable treasures, washed up from some wreck. He saw little yellow crabs, ugly lobsters, and queer horse-shoes with their stiff tails. Sometimes a whale or a shark swam by, and often sleek black seals came up to bask on the warm rocks. He gathered lovely sea-weeds of all kinds, from tiny red cobwebs to great scalloped leaves of kelp, longer than himself. He heard the waves dash and roar unceasingly; the winds howl or sigh over the island; and the gulls scream shrilly as they dipped and dived, or sailed away to follow the ships that came and went from all parts of the world. With Nep and Gulliver he roamed about his small kingdom, never tired of its wonders; or, if storms raged, he sat up in the tower, safe and dry, watching the tumult of sea and sky. Often in long winter nights he lay awake, listening to the wind and rain, that made the tower rock with their violence; but he never was afraid, for Nep nestled at his feet, Dan sat close by, and overhead the great lamp shone far out into the night, to cheer and guide all wanderers on the sea. Close by the tower hung the fog-bell, which, being wound up, would ring all night, warningly. One day Dan found that something among the chains was broken; and, having vainly tried to mend it, he decided to go to the town, and get what was needed. He went once a week, usually, and left Davy behind; for in the daytime there was nothing to do, and the boy was not afraid to stay. "A heavy fog is blowing up: we shall want the bell to-night, and I must be off at once. I shall be back before dark, of course; so take care of yourself, boy," said Dan. Away went the little boat; and the fog shut down over it, as if a misty wall had parted Davy from his uncle. As it was dull weather, he sat and read for an hour or two; then fell asleep, and forgot everything till Nep's cold nose on his hand waked him up. It was nearly dark; and, hoping to find Dan had come, he ran down to the landing-place. But no boat was there, and the fog was thicker than ever. Dan never had been gone so long before, and Davy was afraid something had happened to him. For a few minutes he was in great trouble; then he cheered up, and took courage. "It is sunset by the clock; so I'll light the lamp, and, if Dan is lost in the fog, it will guide him home," said Davy.