They regarded this singular man in amazement.
"You do not understand me," he continued. "Come to the bottom of the ladder, and you shall see."
"Shall we take our guns?" asked the professor.
"Not the slightest necessity."
"At least your slaves are armed?"
"They are all at their work; follow me," said the captain.
They obeyed his order, and walked to the foot of the metal ladder.
The captain folded his arms, and stood by the side of the professor.
Mont and Carl were together.
Even Stump had crawled along the passage to see what would happen.