three o'clock
Did he ever visit his home when in town ? or did he make his head-quarters somewhere else ? were questions that suggested themselves to Frank , but which , of course , he could not answer ; neither did he dare to question any of the citizens , for they might be Mr. Abbott 's friends , who would not fail to inform him that particular inquiries were being made , which would lead him to act more cautiously . Frank did not know what plan to adopt , but walked listlessly about the streets until he heard the Michigan 's bell strike half-past three o'clock . He must be on board by four , as the admiral was to be there to inspect the vessel . He was reluctant to leave without having accomplished any thing more than the discovery of the rebel 's dwelling ; but there was no help for it , and he walked slowly toward the landing , where he found a boat waiting for him . That night , although he retired early , he slept but little , but tossed restlessly about in his bunk , endeavoring to conjure up some plan by which he might capture the rebel ; and when he fell asleep , he dreamed about the subject uppermost in his mind .