The Senator’s son had that day worn his heavy leather chaps. He had found them burdensome enough on his slow climb upward. They now impeded him till he could not have outrun the animal had he tried, nor was there any tree handy between him and it.

Then a wild thought struck him. The log slide!—It was mighty risky, but then, so was the bull. Leaping aboard a log that still lay at the head of the slide, he pulled the lever and sent it shooting to the stream below, and the fallen pine needles flew out in a cloud before him, as the log hurled down the grade. His heavy leather chaps really helped him balance now, and his hob-nails helped him cling.

The log came to a stand-still before it reached the river,—but Ace did not. And the bull was hopelessly out-distanced.

CHAPTER III

LIVING OFF THE WILDERNESS

On every side stretched a sea of peaks. They might have been in mid-ocean, stranded on a desert island, had they not been on a mountain-top instead.

For one glorious fortnight they had camped beside white cascading rivers, and along the singing streams that fed them, following their windings through flower perfumed forests and on up into the granite country where glacier lakes lay cupped between the peaks to unfathomable cobalt depths. They had seen deer by the dozen feeding in the brush of the lower country,—graceful, big-eyed creatures who allowed them to approach to within a stone’s throw before they went bounding to cover. They had thrown crumbs to the grouse and quail that came hesitatingly to inspect their camp site, protected at this season by the game laws and so unaccustomed to human kind that they were all but tame. They had crossed and recrossed rivers not too deep to ford, and rivers not too swift to swim. They had scaled cliffs where nothing on hooves save a burro—or a Rocky Mountain goat—could have followed after.

But always the shaggy gray donkeys had kept at their heels like dogs,—save when they got temperamental or went on strike,—waggling their long ears in a steady rhythm, exactly as if these appendages had been on ball bearings. The burros, five in number, had each his individuality. There was Pepper, the old prospector’s own comrade of many a mountain trail, who, knowing his superior knowledge of the ways of slide rock and precipices, insisted always on being in the lead. This preference on his part he enforced with a pair of the swiftest heels the boys had ever seen. There was old Lazybones, as Pedro had named the one who, presenting the greatest girth, had to carry the largest pack. There was Trilby, of the dainty hooves, who never made a misstep. He—for the cognomen had been somewhat misplaced—was entrusted with the things they valued most, their personal kit and the trout rods. The Bird was the one who did the most singing,—though they all joined in on the chorus when they thought it was time for the table scraps to be apportioned. And finally there was Mephistopheles, whose disposition may have been soured under some previous ownership,—since the blame must be placed somewhere. Ace had added him to Long Lester’s four when a lumberman had offered him for fifteen dollars. The name came afterwards. But though he sometimes held up operations on the trail, he was big enough to carry 150 pounds of “grub,” and that meant a lot of good eating.

Despite their hee-hawing, however, the diminutive pack animals did a deal of talking with their ears. When startled, these prominent members were laid forward to catch the sound. When displeased, the long ears were flattened along the backs of their necks. If browse was good, they remained in the home meadow,—after first circling it to make sure there was no foe in ambush. If not, they wandered till they found good feed,—and one night they wandered so many miles, hobbled as they were, that it took all of the next forenoon to find them and bring them back to camp.