three o'clock
As it was , Mrs. Thomas tapped ! `` Come in , please , '' said Priscilla , and the large , handsome superintendent entered and sat down . `` I thought I would come and tell you , '' she said , trying to keep her professional expression while her maternal heart warmed to the girl , `` that you have been highly honoured . There is to be a very important operation to-morrow at three o'clock . Doctor Ledyard is to perform it , assisted by his young partner . He has asked for several nurses , and he named _ you _ -- singled you out . He has observed you ; wishes to -- use you .