twelve o'clock
remarks Mr. Ellins . `` No billiards ! No cards ! Say , what the merry Mithridates do you think I 'm going to do with myself from now until twelve o'clock , eh ? '' `` By referring to the rules of this establishment , Mr. Ellins , '' says the Doc , speakin ' cold and reprovin ' , `` you will see that the general retiring hour is fixed at nine-thirty . At nine-forty-five the gas is all turned off . '' `` What ! ''