nearly eleven o'clock
I was after this left alone for the greater part of the day ; and towards evening the jailer brought me some more food . I was very thankful to see his back as he went out , and heartily trusted that I might never set eyes on him again . I could only calculate the time by hearing the guards changed . At last , believing that it was nearly eleven o'clock , I prepared for my adventure . Putting up my bedstead as before , I climbed to the window , from which I noiselessly removed the bar ; then getting outside , I replaced it , and dropped a height of ten feet or so into a sort of inner ditch . It was perfectly dry , and as the ground was hard I felt somewhat shaken ; but recovering myself , I crawled along till I could mount the bank at a spot whence I could observe the sentries on either side . One , as he did not move , had , as I hoped , taken the doctor 's potion ; but the other still walked backwards and forwards , evidently wide-awake .