“Well, I don’t believe he’s right,” said Mark; “eh, Dean?”

His cousin shook his head.

“I hope he is,” said Sir James; “but we are quite at his mercy.”

“Yes,” said the doctor, “and I don’t wonder at all, boys, at your losing your way. I know I should have had to give up.”

“It seems so far,” said Dean, and he looked enquiringly at their guide, who stood smiling and waiting for them to come on.

At last full proof of the black’s accuracy was shown by his stopping short and pointing forward.

“Well, what are you doing that for?” cried Mark, who was next to him. “Yes, all right, father; there goes one of them.”

“I don’t see anything,” said the doctor, who came next in the single file in which they had pursued their way.

“I did; I saw a face peep round one of the trees and dart back again.”

“Are you sure?” said the doctor. “I can make out scarcely anything in this darkness. Ah! Can you see anything now?”