He rose and took the lamp. I followed him. He moved towards the wall. I looked on. He applied his ear against the dry stone, and moved it slowly to and fro, listening intently. I perceived at once that he was examining to find the exact place where the torrent could be heard the loudest. He met with that point on the left side of the tunnel, at three feet from the ground.

I was stirred up with excitement. I hardly dared guess what the hunter was about to do. But I could not but understand, and applaud and cheer him on, when I saw him lay hold of the pickaxe to make an attack upon the rock.

“We are saved!” I cried.

“Yes,” cried my uncle, almost frantic with excitement. “Hans is right. Capital fellow! Who but he would have thought of it?”