ten o'clock
Goodwin , the third lieutenant who was his room-mate , had already turned in ; but it was impossible for him to sleep . Pelham took a match from his pocket and lighted the lamp , which swung on gimbals in the room . `` What are you doing , Pelham ? '' demanded Goodwin `` It is against the rule to light a lamp after ten o'clock . '' `` I know it ; but I 'm not going to blunder round here , and have my brains knocked out in the dark , '' growled Pelham . `` Put the light out ; you will get into trouble , '' remonstrated his room-mate . `` I wo n't do it . ''