"But Mont will die," answered Carl; "he is lost, and does not know his way back."
"His supply of air will last another hour and a half. There is yet hope."
"What can we do?"
"I will send out a party to search for him, and I will head it myself," replied Captain Vindex.
At this generous offer Carl's heart was filled with fresh hope.
The captain gave orders for three negroes to accompany him.
They were soon dressed and supplied with air, Captain Vindex himself taking a fresh reservoir.
Then the ceremony of going out was repeated, and, as the exploring party quitted the ship, all Carl could do was to pray fervently for their success.
He, the professor, and Stump were very languid, and, in spite of their anxiety, they could not shake off the somnolent effects of their long walk.
Each sank down on the floor of their cabin, and was soon fast asleep.