It was a matter of but a few minutes to remove enough of the wall to permit his body to pass through the aperture. Directly ahead of him he thought he discerned a faint glow—scarcely more than a less impenetrable darkness. Cautiously he moved forward on hands and knees, until at about fifteen feet, or the average thickness of the foundation walls, the floor ended abruptly in a sudden drop. As far out as he could reach he felt nothing, nor could he find the bottom of the black abyss that yawned before him, though, clinging to the edge of the floor, he lowered his body into the darkness to its full length.
"This gentleman was hit once at least," he said. "Possibly thrice."
"A derelict," was the terse explanation of the officer of the watch.