“That breeze indicates a large open space somewhere ahead—probably the cave for which we are in search.”

“We cannot do better, Claud; let us go on,” said my brother. “But stay,” he added; “for fear we may be suddenly parted, I will light my torch.”

“No, no,” said I, “mine will be sufficient; keep yours in reserve. It would be unwise to use two at a time.”

“What a prudent old boy you are, Claud! But go on,” said Martin.

We did go on—and on, until we came to another opening, wider still than the one we were then in, and also upon the right-hand side.

“Shall we go down here?” said I, doubtfully.

“Yes—always to the right; and keeping that in mind, we shall find no difficulty in returning,” said Martin.

Again onwards—but about two hundred yards further, finding four different openings, three upon one side, and one upon the other, I came to a halt, and expressed my doubts as to the prudence of passing further; but Martin laughed at my indecision.

“Oh, bother!” said he, “we won’t stop now; this poking about in the dark is capital fun.”

“Well, then,” I replied, leading the way, “to the right again.”