On the other side of the chamber, a great rock in the ground slowly turned, as though on a pivot. They watched, fascinated. Even then Wu did not forget the precious ring, but as the rock turned, reached down quickly and recovered it from the cup at the floor.

Inch by inch the pivoted rock moved on its axis. They flashed their lanterns full on it and, as it moved, they could see disclosed huge piles of gold and silver in coins and bars and ornaments, a chest literally filled with brilliants, set and unset, rubies, emeralds, precious stones of every conceivable variety, a cave that would have staggered even Aladdin—the rich reward of the countless marauding operations of Bennett's other personality.

For a moment they could merely stand in avaricious exultation.

. . . . . . .

Painfully and slowly, we managed to trail Long Sin's footprints, until we came to a road where they were lost in the hard macadam. There was no time to stop. We must follow the road on the chance that he had taken it. But which way?

Kennedy chose the most likely direction, for the trail had been at an angle to the road and Long Sin was not likely to double back. We had not gone many rods before Kennedy paused a minute and looked about in the moonlight.

"It's right, Walter," he cried. "Do you recognize it?"

I looked about. Then it flashed over me. This was the back road that led past the entrance to the treasure vault at Aunt Tabby's.

We went on now more quickly, listening carefully to catch any sounds, but heard nothing. At last Kennedy stopped, then plunged among the rocks and bushes beside the road. We were at the cave.

"You go in this way, Walter," he directed. "I'll go around and down where it caved in."