"They couldn't rig up anything as big as that," said Jack decisively, "besides, there's another thing—I didn't tell you because I thought I might have been mistaken, but I saw those same things this afternoon."

"What?" went up in a perfect roar of incredulity.

"Say, is this some kind of a josh?" asked Coyote Pete suspiciously.

"Never more serious in my life," Jack assured him, and then went on to relate the strange experience that had befallen him when he had poked his head out from under the saddle in the sand-storm.

"If they weren't so enormous, I should say they was horses," said Pete; "but the biggest horses that ever growed never even approached them critters—spooks, er whatever they are."

"There are giants among men," suggested Walt, "why shouldn't there be giants among spooks, too?"

"You get to Halifax with that spook talk," said Coyote Pete scornfully. "I'll bet my Sunday sombrero that whatever them things is, there's some sore of human mischief back uv it. But what is it? Who put it up?"

"Yes, and what for, and why?" laughed Jack. "I tell you, fellows," he went on, "it's no use of our racking our brains to-night over this. The best thing we can do is to set a watch. Then, if they come again, we can try a shot at them. If not, why then in the morning we'll make an investigation; eh?"

"Durn good advice," grunted Coyote Pete. "Now, I'd suggest that ther perfusser takes ther fust watch, and——"

"No, no, my dear sir; really, I—I have a cold already. A-hem—ach-oo!"