The prisoners were confined in a room of the officers' quarters, the window grated, the door provided with a sash, through which the sentinel, constantly on duty in the passage, could look into the room as he paced on his round. At either end of this passage was a door, opening upon the parade of the fort, at which other sentinels were posted. At sunset the gates were closed, and the number of sentinels on the parapet increased. A picket was also stationed at the narrow isthmus connecting with the main-land. These were not all the difficulties in their way. Supposing them able to pass the sentinels in the passage and at the outer door of their quarters, they must then cross the open space and ascend the wall under the eye of the guards posted on the parapet. Admitting the summit of the rampart gained, the exterior wall was defended with strong pickets driven obliquely into the earthen wall of the fort. From this point was a sheer descent of twenty feet to the bottom of the ditch. Arrived here, the fugitives must ascend the counterscarp, and cross the _chevaux-de-frise_ with which it was furnished. They were then without the fortress, with no possible means of gaining their freedom except by water. To elude the picket at the Neck was not to be thought of. The prisoners' room was ceiled with pine boards. Upon some pretext they procured a gimlet of a servant, with which they perforated a board so as to make an aperture sufficiently large to admit the body of a man. The interstices were cut through with a penknife, leaving the corners intact until the moment for action should arrive. They then filled the holes with bread, and carefully removed the dust from the floor. This work had to be executed while the sentinel traversed a distance equal to twice the depth of their own room. The prisoners paced their floor, keeping step with the sentry; and as soon as he had passed by, Burton, who was the taller, and could reach the ceiling, commenced work, while Wadsworth walked on. On the approach of the soldier Burton quickly rejoined his companion. Three weeks were required to execute this task. Each was provided with a blanket and a strong staff, sharpened at the end. For food they kept their crusts and dried bits of their meat. They waited until one night when a violent thunder-storm swept over the peninsula. It became intensely dark. The rain fell in torrents upon the roof of the barracks. The moment for action had come. The prisoners undressed themselves as usual, and went to bed, observed by the sentinel. They then extinguished their candle, and quickly arose. Their plan was to gain the vacant space above their room, creeping along the joists until they reached the passage next beyond, which they knew to be unguarded. Thence they were to make their way to the north bastion, acting as circumstances might determine.