gymnastic

This done, instead of leaving the door fastened, he drew back the bolts and even placed the door ajar, as though he had left the room, forgetting to close it, and slipping into the chimney like a man accustomed to that kind of gymnastic exercise, after replacing the chimney-board, which represented Achilles with Deidamia, and effacing the very marks of his feet upon the ashes, he commenced climbing the hollow tunnel, which afforded him the only means of escape left.