A large space within the casing of the end of the bath was thus revealed.

Before doing anything else, Racksole tried to repeat the trick with the waste-tap, but he failed; it would not work again, nor could he in any way perceive that there was any connection between the rod of the waste-tap and the hasp of the panel.

Racksole could not see into the cavity within the casing, and the electric light was fixed, and could not be moved about like a candle.

He felt in his pockets, and fortunately discovered a box of matches.

Aided by these, he looked into the cavity, and saw nothing; nothing except a rather large hole at the far end--some three feet from the casing.