A recruit to the ranks was not a novelty, and though Sam was a mule, they accepted him readily enough, and for several days they roamed the cañons of El Toro. Rains had been frequent in this region and they obtained their fill of grass. As is the way of horses, the band paid scant attention to the mule; he grazed with them, and when any alarm or mere exuberance of spirits prompted a run, he could show his heels to all but the buckskin leader and a bay mare which seemed to carry wings on her feet.

And on the fifth day occasion arose for him to prove his prowess. In the band were a dozen mares, seven colts of various ages and fifteen horses, all under the leadership of the buckskin. Now, Sam was a mule of considerable common-sense; he never disputed the sovereignty of the stallion, but at the same time he was fully sensible of his own strength and fighting ability, having had occasion to test the same frequently, and he had not the remotest intention of allowing any horse on the range or other quadruped, to take undue liberties.

As they came up from watering at a mountain spring at high noon, the mustangs were compelled to thread a narrow defile, and much crowding resulted. A colt ricochetted from the mule and lost his feet, whereupon the mother made at Sam with her teeth. This attack he ignored dexterously by bursting through the press and imposing the bodies of several horses between him and the indignant mare; but when a youthful black took it into his head that Sam was a recreant and could be bullied with impunity, various things happened. By now, they were out in the open. Trumpeting defiance, the black ran at him.

The combat did not last three minutes. It is probable that the mule would have killed his assailant when he lay prone after the third onslaught, had not the leader trotted up in royal wrath to quell the disorder in his following. Should he go for him too, and reduce him to pulp? Sam’s eyes were glittering evilly, and the mulish, enduring rage was alive, but his habitual discretion cooled the impulse and he gave ground, his ears laid back, his retreat reluctant. The stallion wisely let him go.

Soon he attained to a species of leadership, a vice-royalty under the reigning buckskin. For one thing, his caution was tempered by almost human powers of discrimination; for another, he was never subject to the nervous tremors to which even the stallion fell victim and which were the inspiration of many stampedes. Sam could sense peril as far as any and was dubious, in a calm way, of everything he saw until he had investigated; but sudden noises, or a strange scent brought abruptly to his nostrils, did not send him flying over the country, shrilling warnings. He made reasonably sure of the possibility of danger before giving the alarm. Of his old masters, he was peculiarly wary, and twice at night, when they passed within a mile of the round-up camp, the mule’s nose acquainted him of its proximity, and he led them far to the west.

When the outfit had almost completed the round-up, Sam wandered off from the band on a morning’s jaunt and came unexpectedly upon the remuda in a draw. The wrangler espied that unmistakable gait from afar and spurred desperately to catch him, but the mule was fleet as a greyhound and could not be headed. Two of the horses followed the fallen one. They knew Sam and respected him, and what was good enough for him would suit them admirably. Maclovio did not see their departure; madly scurrying from point to point to herd the restless horses, he failed to perceive the flight toward the gap, and it was only when the roping began after dinner that the loss was discovered. The Mexican prayed inwardly that Sam would break a leg and die by inches; if he would only break his neck, he would buy a dozen candles for the altar at Tucalari.

Old Pete McVey, the manager, sat on the stoop of the bunkhouse at headquarters and made a solemn vow to the skies.

“I’ll hunt down every last one of that bunch and hang Sam’s hide to the saddle-shed. We’ve had two breakdowns with the wagon since he left--that ol’ mule we got from Doghole ain’t no good, Mit--and now two horses have run off.”

“I done told Uncle Henery and Dave that I felt shore it was Sam or some of them mustangs that stompeded those steers last week.”

“When I get him, the ol’ fool!” burst out the manager.