Had his comrade been true to him, and taken his share of the troubles, it would have been bad enough; but it was gradually dawning upon Dexter that the boy he had half-idolised for his cleverness and general knowledge was a contemptible, ill-humoured bully—a despicable young tyrant, ready to seize every opportunity to oppress.

“Are you a-going?” cried Bob, growing more brutal as he found that his victim made no resistance, and giving him a blow on the jaw which sent him staggering against one of the trees.

This was too much; and recovering himself Dexter was about to dash at his assailant when he stopped short, for an idea that seemed incontrovertible struck him so sharply that it drove away all thought of the brutal blow he had received.

“I know, Bob,” he cried.

“Know? What d’yer know?”

“Where the boat is.”

“Yer do?”

“Yes: that man followed us and took it away.”

Bob opened his mouth, and half-closed his eyes to stare at his companion, as he balanced this idea in his rather muddy brain.

“Don’t you see?” cried Dexter excitedly.