about ten o'clock
`` I wonder , '' Kay spoke up demurely , `` which ancestor from which side of the family tree put that idea in his head , father ? '' Don Mike pretended not to have heard her . He turned kindly to John Parker and laid a friendly hand upon the latter 's arm . `` I think Bill Conway will drift by about ten o'clock or ten-thirty , Mr. Parker . I know he will not cause you any more inconvenience than he finds absolutely necessary , sir . He 's tricky , but he is n't mean . '' Parker did not reply .