"Oh!" cried Walter Perkins.
"Good boy! Hang on!" shouted Tad encouragingly.
It is doubtful whether Stacy heard either the words of warning or those of encouragement from Tad, for at that moment Stacy's feet were up in the air. The pinto had leaped forward like a shot the instant it felt the touch of the rope. Of course Chunky, who had clung to the rope, went along at the same rate of speed.
A great cloud of dust rose from the corral. The mustang was darting here and there, bucking, squealing and kicking. In a moment most of the other mustangs were doing likewise. The owner of the herd, calling to the Professor, darted out, leaving one bar of the fence down. Professor Zepplin, becoming confused, missed his way and found himself penned into one corner at the far side, almost the center of a circle of kicking mustangs.
Tad saw the danger of their companion almost at once. The lad leaped down, and darting among the kicking animals, made his way toward the Professor just as Stacy's mustang leaped the bars. Stacy's toes caught the top rail, retarding his progress for the briefest part of a second, then he shot out into the air after the racing mustang.
"Leggo!" roared the boys.
"Let go!" shouted the guide. "The little fool! Doesn't he know enough to come in out of the wet?"
"You'll find he doesn't, sir. Your troubles have only just begun.
You'll be demanding an increase of wages before you have followed
Stacy Brown for a full twenty-four hours," prophesied Ned.
In the meantime Tad had reached the Professor, regardless of the flying hoofs about him. With his rope the boy drove the animals off just in time. Somehow they seemed to have taken it into their heads that the Professor was responsible for their having been disturbed and they were opening their hoof batteries upon him. They gave way before the resolute young Pony Rider almost at once. They recognized that this slender young plainsman and mountaineer was unafraid.
The Professor was weak in the knees by the time he had been led out.