"On the west," replied Hobson, not a little surprised at the question, "you know that well enough, Marbre"

"I know it well enough! I know it well enough!" repeated Marbre, shaking his head, "and if it is on the west, we are going wrong, and away from the inland!"

"What, away from the island!" exclaimed the Lieutenant, struck with the hunter's air of conviction.

"We are indeed, sir," said Marbre; "look at the compass; my name is not Marbre if it does not show that we are walking towards the east not the west!"

"Impossible!" exclaimed Mrs Barnett.

"Look, madam," said Sabine.

It was true. The needle pointed in exactly the opposite direction to that expected. Hobson looked thoughtful and said nothing.

"We must have made a mistake when we left the ice cavern this morning," observed Sabine, "we ought to have turned to the left instead of to the right."

"No, no," said Mrs Barnett, "I am sure we did not make a mistake!"

"But"--said Marbre.