seven o'clock
Do you not know why Mr. Drake has offered his resignation ? '' Stonewell read the paper ; then looked keenly at Robert , then at Captain Blunt and Harry ; things seemed to explain themselves and he merely said , `` Ah , '' as if it were in response to some unspoken thought of his own . `` Where were you last night at eleven o'clock , Mr. Stonewell ? '' `` In Washington , sir ; I spent the day in Princeton , New Jersey , and returned to Washington at seven o'clock . '' An angry exclamation left the commandant 's lips . Again his closed fist banged the desk . `` Mr. Stonewell ! ''