five o'clock
Perhaps one of us may be officer-in-charge . By the way , I 'm going to say good-bye to you for a couple of days . I 've leave to go to Washington . I 'm going to take the five o'clock train to-night and I 'll be back Sunday morning at about ten o'clock . '' Robert looked at his roommate with unconcealed amazement . `` Well , Stone , you 'll excuse my being astonished . But for an intimate chum you are the most remarkably secretive , non-communicative , open-hearted fellow that ever lived .