For a moment the others stood looking at the little, mean-faced man and the giant lying dead upon the beach.

Then one of them laughed and slapped the little man upon the back. There was much more talk and gesticulating, but less quarreling.

Presently they launched the boat and all jumped into it and rowed away toward the great ship, where Tarzan could see other figures moving about upon the deck.

When they had clambered aboard, Tarzan dropped to earth behind a great tree and crept to his cabin, keeping it always between himself and the ship.

Slipping in at the door he found that everything had been ransacked. His books and pencils strewed the floor. His weapons and shields and other little store of treasures were littered about.

As he saw what had been done a great wave of anger surged through him, and the new made scar upon his forehead stood suddenly out, a bar of inflamed crimson against his tawny hide.

Quickly he ran to the cupboard and searched in the far recess of the lower shelf. Ah! He breathed a sigh of relief as he drew out the little tin box, and, opening it, found his greatest treasures undisturbed.

The photograph of the smiling, strong-faced young man, and the little black puzzle book were safe.

What was that?

His quick ear had caught a faint but unfamiliar sound.