Most of the guardhouse "birds" were out chopping wood, and Canker danced in among the few remaining, loading them with bedding belonging to their fellows until every item of clothing and furniture was shoved out of the room. One member of the Board and one only failed to enter with his associates--a veteran captain who read much war literature and abhorred Canker. To the surprise of the sentry he walked deliberately over to the fence, climbed it and presently began poking about the wooden curb that ran along the road, making a low revetment or retaining wall for the earth, cinders and gravel that, distributed over the sand, had been hopefully designated a sidewalk by the owners of the tract. Presently he came sauntering back, and both sentries within easy range would have sworn he was chuckling. Canker greeted him with customary asperity. "What do you mean, sir, by absenting yourself from this investigation, when you must have known I was with the Board and giving it the benefit of the information I had gathered?" "I was merely expediting matters, colonel. While you were looking for where they went in I was finding where they got out." "Went in _what_? Got out of what?" snapped Canker. "Their tunnel, sir. It's Libby on a small scale over again. They must have been at work at it at least ten days." And as he spoke, calmly ignoring Canker and letting his eyes wander over the floor, the veteran battalion commander sauntered across the room, stirred up a slightly projecting bit of flooring with the toe of his boot and placidly continued. "If you'll be good enough to let the men pry this up you _may_ understand."