"And then?"

"It runs across the Indian Ocean."

"And then?"

"It grazes St. Paul's Island of the Amsterdam group."

"Go on."

"It cuts Australia across the province of Victoria."

"Proceed."

"Leaving Australia——"

This last sentence was not finished. Did the geographer hesitate? Did he know no more? No; but a startling cry was heard in the top of the tree. Glenarvan and his friends grew pale as they gazed at each other. Had a new calamity happened? Had the unfortunate Paganel fallen? Already Wilson and Mulready were hastening to his assistance, when a long body appeared. Paganel dangled from branch to branch. His hands could grasp nothing. Was he alive, or dead? They did not know; but he was about to fall into the roaring waters, when the major, with a strong hand, arrested his progress.

"Very much obliged, MacNabb!" cried Paganel.