“We are going backwards?” said Conseil.

“Yes,” I replied. “This end of the tunnel can have no egress.”

“And then?”

“Then,” said I, “the working is easy. We must go back again, and go out at the southern opening. That is all.”

In speaking thus, I wished to appear more confident than I really was. But the retrograde motion of the Nautilus was increasing; and, reversing the screw, it carried us at great speed.

“It will be a hindrance,” said Ned.

“What does it matter, some hours more or less, provided we get out at last?”

“Yes,” repeated Ned Land, “provided we do get out at last!”

For a short time I walked from the saloon to the library. My companions were silent. I soon threw myself on an ottoman, and took a book, which my eyes overran mechanically. A quarter of an hour after, Conseil, approaching me, said, “Is what you are reading very interesting, sir?”

“Very interesting!” I replied.