Out he jerked his pistol and fired, straight up, their prearranged signal: One shot, then a pause, then two. Some bare possibility existed and that she still might live and hear and know that rescue came--if it could come before it were eternally too late!

“On, on!” cried Allan. “Go on, Zangamon! Quick! Lead me on the trail!”

The Merucaan, now aided by Bremilu, who had recovered his wits, scouted ahead like a blood-hound on the spoor of a fugitive. One gripped his stone ax, the other a javelin.

Bent half double, scrutinizing in the dark the stony path which Allan followed behind them only by the aid of his flash, they proceeded cautiously up toward the brow of the cliff again.

But ere they reached the top they branched off onto another lateral path, still rougher and more tortuous, that led along the breast of the cañon.

“This way, master. It was here, most surely, the thing carried her.”

“What kind of marks? Do you see signs of claws?”

“Claws? What are claws?”

“Sharp, long nails, like our nails, only much larger and longer. Do you see any such marks?”

Zangamon paused a second to peer.