They were Captain Vindex and Professor Woddle.
Mont tried to cry out, but only a feeble sound came from his lips.
He, however, waved his hands, and the signal was seen.
Soon the electric boat floated gently to the rock.
He stepped on the platform, which was by this time crowded with the crew, Carl, and Stump.
The next moment he was in the arms of kind friends.
He sank fainting at their feet, and was carried below, where he remained some days before he entirely recovered his strength.
Captain Vindex had entertained an idea that Mont might reach the surface by climbing up the rocks, although he scarcely dared to hold this opinion as a certainty.
But when nothing could be seen of him below the surface, he resolved to look for him above.
Consequently the Searcher rose under his orders, with the happy result we have described.