Instantly the camp was thrown into confusion. The lads ran here and there, not knowing what to do.

"Get behind the ponies! That's the only cover we can find here. Run for it!"

And run they did, the Professor outdistancing all the rest in his attempt to secrete himself where the enemy's weapons would not be likely to reach him.

In a moment more, the camp of the Pony Rider Boys was deserted, and behind each sleeping pony lay a boy, with rifle barrel poked over the animal's back, ready to shoot at the first sign of the redskins. Stacy, in his excitement, had forgotten that not a cartridge was left in his magazine, and the others were too fully occupied to remember to tell him.

For all of half an hour did the party lie protected. The boys began to grow restive. Tad's suspicions were being slowly aroused.

"I'm going to do a little scouting," he told them, slipping from behind the pony and skulking along back of the tents. The moon was shining brightly now. He could see a long distance. Not a human being was in sight.

"I thought so," he muttered, retracing his steps. "See here, Stacy Brown, what did you see—what did you shoot at?" he demanded sternly.

"I—I shot the chute—I—I mean I chuted the shot—I mean—"

"Say, what do you mean?"

"I—I mean—say, leggo my neck, will you?" roared Chunky.