By this time the entire camp, with the exception of Professor Zepplin and Stacy Brown, had set out on a swift run, following on the trail of Tad.

Ahead of him, the boy could hear the ponies' hoofs on the rocks, and now and then a distant crash told him they were working up into the dense second growth that he had seen in his brief tour of inspection earlier in the evening. He realized from the sound that he was slowly gaining on the missing animals.

Tad's blood was up. His firm jaw assumed the set look that it had shown when he won the championship wrestling match at the high school.

The shouts of the others at his rear, warning him of the danger and calling upon him to return, fell upon unheeding ears. So intent was the boy upon the accomplishment of his purpose that he gave no heed to the fact that the sounds ahead had ceased, and that only the soft patter of his own feet on the rocks broke the stillness between the loud claps of thunder.

Yet, even if Tad had sensed this, its meaning doubtless would have been lost upon him, unused as he was to the methods of mountaineers. So the boy ran blindly on in brave pursuit of the man who had stolen their mounts while the Pony Riders slept.

Suddenly, without the slightest warning, Tad felt himself encircled by a pair of powerful arms, and, at the same time, he was lifted clear of the ground.

But even then the lad's presence of mind did not desert him, though the vise-like pressure about his body made him gasp.

All his faculties were instantly on the alert. But he realized now that his only hope lay in attracting the attention of the others of his party, who could be only a short distance away, for he could still hear their shouts.

"Help!"

Tad's shrill voice punctuated a momentary lull in the storm.