"Five riders an' four extra hosses, if I ain't read the sign wrong," Piegan casually remarked. "Say, we'll have our hands full if we bump into this bunch unexpected, eh?"

"They'll make short work of us if they get half a chance," Mac agreed. "But we'll make it a surprise party if we can."

From there on Piegan set a pace that taxed our horses' mettle—that was one consolation—we were well mounted. All three of us were good for a straightaway chase of a hundred miles if it came to a showdown. Piegan knew that we must do our trailing in daylight, and rode accordingly. He kept their trail with little effort, head cocked on one side like a saucy meadowlark, and whistled snatches of "Hell Among the Yearlin's," as though the prospect of a sanguinary brush with thieves was pleasing in the extreme.

The afternoon was on its last lap when we came in sight of Stony Crossing. The trail we followed wound along the crest of a ridge midway between the Crossing and Ten Mile Spring, where we had left Baker's outfit that rainy morning. The freighters had moved camp, but the mud and high water had held them, for we could see the white-sheeted wagons and a blur of cattle by the cottonwood grove where Hank Rowan had made his last stand. Presently we crossed the trail made by the string of wagons; it was fresh; made that morning, I judged. A little farther, on a line between the Crossing and the Spring, Piegan pulled up again, and this time the cause of his halting needed no explanation. The bunch had stopped and tarried there a few minutes, as the jumbled hoof-marks bore witness, and the track of two horses led away toward Ten Mile Spring.

"Darn it all!" Piegan grumbled. "Now, what d'yuh reckon's the meanin' uh that? Them two has lit straight for where Baker's layout was camped this mornin'. What for? Are they pullin' out uh the country with the coin? Or are they lookin' for you fellers?"

"Well"—MacRae thought a moment—"considering the care they've taken to cover up their movements, I don't see what other object they could have in view but making a smooth getaway. They've worked it nicely all around. You know that if there was anything they wanted they weren't taking any risk by going to any freight camp. We're the only men in the country that know why they are pulling out this way—and they know that we daren't go in and report it, because they've managed to put us on the dodge. They have reason to be sure that headquarters wouldn't for a minute listen to a yarn like we'd have to tell—they'd have time to ride to Mexico, while we sucked our thumbs in the guardhouse waiting for the rest of the Police to get wise by degrees."

"Then I tell yuh what let's do," Piegan abruptly decided. "I like t' know what's liable t' happen when I'm on a jaunt uh this kind. One of us better head in for the Crossin' an' find out for sure if any uh them fellers come t' the camp, an' what he wanted there. An' seein' nobody outside uh Horner knows I'm in on this play, I reckon I better go m'self. If there should happen t' be a stray trooper hangin' round there, the same would be mighty awkward for you fellers. So I'll go. You poke along the trail slow, an' I'll overhaul yuh."

"All right," MacRae agreed, and Piegan forthwith departed for the Crossing.

After Piegan left us we rode at a walk, and even then it was something of a task to follow the faint impression. In the course of an hour a cluster of dark objects appeared on the bench, coming rapidly toward us. MacRae brought the glasses to bear on them at once, for there was always the unpleasant possibility of Mounted Policemen cutting in on our trail; the riders of every post along the line were undoubtedly on the watch for us.

"It's Piegan and another fellow," Mac announced shortly. "They're leading two extra horses, and Piegan has changed mounts himself. I wonder what's up—they seem to be in a dickens of a hurry."