The dog raced gleefully ahead as the young man strode up the gulch, scanning its rugged slope in search of a convenient place to begin the ascent, and presently, as though cognizant of the plan, the dog turned aside and with loud barking and much tail wagging invited attention to a dry watercourse that offered a sort of path. “I guess you're right, Shep,” Tom assented, and set his face to the sturdy climb. Half way up a ledge, covered with cedars and Spanish bayonet, made the ascent really arduous for a little way, and here the dog, which as usual was some rods in advance, suddenly began barking furiously, and capering around a small object. “Chipmunk, I reckon,” said Tom to himself, as he scrambled on, short of breath; but when Shep came sliding down, holding in his mouth a battered old felt hat, curiosity changed to amazement. The dog growled at first, and refused to give up his prize, but after a little coaxing yielded it into Tom's hands. The old prospector had had no hat when found. Could this be it? It did not seem to have lain out of doors long, and the dog would hardly show so much interest unless his sharp nose had recognized it as something belonging to his former inaster. Closely scrutinizing, Tom found tucked into the lining a slip of sweat-stained paper with a name upon it-- ARTHUR F. PIERSON, Tucsony Arizona. Stuffing the hat into his pocket Tom scrambled on, thinking out the meaning of the incident; and now he began to notice in this steeper place that some of the boulders had been misplaced, and here and there was a broken branch, as, if someone had descended very hastily or clumsily. “If that crazy old man came down here, and perhaps caught a second bad fall, I don't wonder he was used up by the time he reached the lake” was Tom's mental ejaculation, as he toiled up the acclivity and at last, panting and leg weary, gained a narrow grassy level at the foot of a crag “spiked with firs,” which had been conspicuous from the valley not only by its height and castellated battlements, but because a colossal X was formed on its face by two broad veins of quartz crossing each other. With his eyes fixed upon the rocky wall he walked along in the face of a stiff breeze, until he noticed a pinkish streak upon the dark cliff, betokening the outcrop of another vein, and turned aside to climb a pile of fallen fragments at the foot of the crag to reach it. These fragments were overgrown with low, dense shrubbery. He ducked his head and was pushing into them, when suddenly he saw a huge brown body rise almost into his face, heard the tremendous growl of a grizzly, and amid a crash of bushes and dislodged stones felt himself hurled backward.