The lad's face was pale, the lines on it standing out in sharp ridges; but not by so much as the flicker of an eyelid did he betray the slightest nervousness. Yet Tad Butler realized fully the perilous nature of his undertaking, and that the least mistake on his part or on the part of those above him might mean a sudden end to his earthly ambitions.

Lige shortened the hitch about the tree, until the line drew taut. After winding the end tightly about his own arm, he handed a lighted torch to Tad.

It was a trying moment for all of them, and naturally more so for the boy who was about to descend into the unknown depths of the mountain canyou.

"Right!" announced the guide in a reassuring voice.

Tad made no reply, but, turning so that he faced them, let himself carefully over the ledge, his right hand holding the torch, his left firmly gripping the ledge so that there might be no jolt on the line by a too sudden stepping-off.

"Good!" approved Lige encouragingly, beginning to let the rawhide slip slowly around the trunk of the tree. As he did so, Tad felt himself gradually sinking into the sombre depths.

He tilted his head to look up. The movement sent his body swaying giddily from side to side.

Cautiously placing a hand against the rocks to steady himself, Tad wisely concluded that hereafter it would not pay to be too curious.

"Hold a torch over the edge of the cliff, Master Ned," directed the guide. "Better lie down so you, too, don't take a notion to fall off. Keep your eyes shut till I tell you to open them."

Slowly, but steadily, the slender line was paid out, amid a tense silence on the part of the little group at the top of the canyou. After what seemed to them hours, a sharp call from the depths reached their ears.