about one o'clock
I got a premature bite . A fellow actually walked into the trap without troubling me to set it . `` It befell thus . I had gone to bed rather early and fallen asleep at once , but about one o'clock I awoke with that unmistakable completeness that heralds a sleepless night . I lit my candle-lamp and looked round for the book that I had been reading in the evening , and then I remembered that I had left it in the museum . Now that book had interested me deeply . It contained the only lucid description that I had met with of the Mundurucú Indians and their curious method of preserving the severed heads of their enemies ; a method by which the head -- after removal of the bones -- was shrunk until it was no larger than a man 's fist .