“Go on.”

“It cuts Australia by the province of Victoria.”

“And then.”

“After leaving Australia in—”

This last sentence was not completed. Was the geographer hesitating, or didn’t he know what to say?

No; but a terrible cry resounded from the top of the tree. Glenarvan and his friends turned pale and looked at each other. What fresh catastrophe had happened now? Had the unfortunate Paganel slipped his footing?

Already Wilson and Mulrady had rushed to his rescue when his long body appeared tumbling down from branch to branch.

But was he living or dead, for his hands made no attempt to seize anything to stop himself. A few minutes more, and he would have fallen into the roaring waters had not the Major’s strong arm barred his passage.

“Much obliged, McNabbs,” said Paganel.

“How’s this? What is the matter with you? What came over you? Another of your absent fits.”