nine o'clock
After supper they all went into the large living room , and Cousin Jack proceeded to entertain them . `` At what time do you have to go to bed , Mehitabel ? '' he asked of Marjorie , whom , for no reason at all , he persisted in calling by that ridiculous name . `` They must go by nine o'clock , '' said Mrs. Maynard , answering the question herself . `` The three older ones may sit up until then . '' `` All right , Madam Maynard ; then I shall devote my attention to the three until their bedtime , after which I may be able to chat a little while with you and Ed . '' Cousin Jack was as good as his word , and entertained the children zealously until nine o'clock .