It was without success, for nowhere could they find the slightest trace of their unfortunate companion.

Carl would have given worlds had he been able to speak.

He was profoundly agitated, for it was horrible to think that his chum was lost under the sea, not knowing his way back to the Searcher, for they had come a roundabout way.

Captain Vindex was also annoyed.

If Mont chose he could climb up the rocks and reach the summit.

There he might take off his helmet, and breathe the free air of heaven.

But would he think of this?

Perhaps in his confusion he would wander about in the effort to meet his companions, and at last be suffocated miserably.

The supply of air with which each was provided was not sufficient to last more than five hours.

Two of those hours' supply had been already consumed.