The sound came again almost immediately, and seemed even more savage than before. Following it he caught the voice of his pard raised in anger.

"Get out, you rascal! Hi! there, what d'ye mean jumping at me like that! Keep off, or I'll give you a dig with the ax. D'ye hear, you big fool?"

Apparently Maurice was in some sort of trouble, and as near as the boy on the shanty-boat could understand he had been attacked by some roving animal that had taken a fancy to try and assault the strange woodchopper.

Thad jumped into the cabin and came out with the little Marlin in his hands; but then he realized how utterly impotent he was to give his beleaguered chum a helping hand just then.

The boiling water lay between him and that shore for a distance of perhaps thirty feet or more; nor was it possible for even his sanguine spirit to bridge it.

True, there was the dinghy on the little beach, and the cable attached to its stern ran all the way to the larger boat, so that it was possible for him to tug away, and eventually bring it alongside.

Should he try it?

The sounds had grown even more furious, as though Maurice and the unseen dog might be engaged in something resembling a regular circus.

Suppose he pulled the dinghy away from the shore, and just then his chum appeared, eager to throw himself into it, his disappointment would be terrible.

But all the same Thad could not stand there helpless and listen to that terrible racket going on.