The motionless figure of a man leaning against a gigantic catalpa twenty feet off appeared, half-veiled by the foliage.

“It is he!” said Maston.

Barbicane never moved. Ardan looked at the captain, but he did not wince. Ardan went forward crying:

“Barbicane! Barbicane!”

No answer! Ardan rushed toward his friend; but in the act of seizing his arms, he stopped short and uttered a cry of surprise.

Barbicane, pencil in hand, was tracing geometrical figures in a memorandum book, while his unloaded rifle lay beside him on the ground.

Absorbed in his studies, Barbicane, in his turn forgetful of the duel, had seen and heard nothing.

When Ardan took his hand, he looked up and stared at his visitor in astonishment.

“Ah, it is you!” he cried at last. “I have found it, my friend, I have found it!”

“What?”