"They've done it!""What?""The German frontier-post ... at the circus of the Butte-aux-Loups.""What about it?""Knocked down.""Nonsense!""See for yourself."Old Morestal stepped aside. His wife came out of the drawing-room and went and stood by the telescope, on its tripod, at the end of the terrace."I can see nothing," she said, presently.