eleven o'clock
Muttering an exclamation that was not altogether pretty he threw the letter as far as he could throw it out into the middle of the floor , and turning back to his supper began to crunch his toast furiously like a dragon crunching bones . At nine o'clock he was still awake . At ten o'clock he was still awake . At eleven o'clock he was still awake . At twelve o'clock he was still awake ... . At one o'clock he was almost crazy . By quarter past one , as though fairly hypnotized , his eyes began to rivet themselves on the little bright spot in the rug where the `` serial-letter '' lay gleaming whitely in a beam of electric light from the street .