three o'clock
I promise . '' As the door closed , the captain threw away the stump he was smoking , and remained for a moment in thought . Then , he drew another cigar from his case , lighted it , and resumed the study of the little note-book . It was past three o'clock when he went to his bedroom . How long the light had been darting about the room like a very much enlarged firefly , Jimmy did not know . It seemed to him like hours , for it had woven itself into an incoherent waking dream of his ; and for a moment , as the mists of sleep passed away from his brain , he fancied that he was dreaming still . Then , sleep left him , and he realized that the light , which was now moving slowly across the bookcase , was a real light .