In the afternoon the wind fell away to a dead calm , but there was still a heavy swell on , and shortly before sunset a fog came creeping up from the east and spread over the bay and islands , so thick and white that Prue and Natty could not even see Little Bear Island on the right . `` I 'm glad Everett is n't coming back tonight , '' said Prue . `` He could never find his way cross the harbour in that fog . '' `` Is n't it thick , though , '' said Natty . `` The light wo n't show far tonight . '' At sunset they lighted the great lamps and then settled down to an evening of reading . But it was not long before Natty looked up from his book to say , `` Hello , Prue , what was that ? Thought I heard a noise . '' `` So did I , '' said Prue . `` I sounded like someone calling . '' They hurried to the door , which looked out on the harbour . The night , owing to the fog , was dark with a darkness that seemed almost tangible . From somewhere out of that darkness came a muffled shouting , like that of a person in distress . `` Prue , there 's somebody in trouble out there ! '' exclaimed Natty . `` Oh , it 's surely never Ev ! '' cried Prue . Natty shook his head . `` Do n't think so . Ev had no intention of coming back tonight .
Get XXXXX lantern , Prue .
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