Sternly ordering the dog to heel, Sid climbed on up cautiously and reconnoitered through the rocks over the ridge. A shallow arroyo lay between him and the next ridge, and beyond that he saw over the mountain back, beyond a void of purple distance, a flat red table of rock, etched sharply by the ragged saw-tooth of the ridge between him and it. Sid glanced curiously at that odd rock formation for an instant, then his eyes swept the hollow below for sight of that band of sheep. Blaze whined and tugged frantically at his collar. He had seen them already, long before Sid’s slower eyes could pick them out in that mass of rocks and sparse vegetation below. “Gorry!--There they go! Steady, Blaze!” he gritted through his clenched teeth and then raised the rifle. The army carbine’s sights sought out the game swiftly. Sid had filed a forty-five degree cut on the front sight, so that it showed up as a little white mirror over the flat bar of his rear sight. Cutting the mirror square in two with the rear bar, he found the galloping ram and raised it up to just under the distant shoulder of the Big-Horn. Sid was just on the point of pressing the trigger--indeed had already felt the first movement of the creep of its bolt action--when a bright, shiny, horizontal flash,--the flash of an arrow--shot across the gray slopes of the ridge opposite! The ram staggered, stumbled, and struggled up a ledge, pawing convulsively with his hoofs. A second and a third arrow flash swept across the hillside and stopped in the ram’s flank. Sid gasped with astonishment. Those flashes were _arrows_! Then he grabbed Blaze’s collar instinctively, put down the rifle hurriedly, and closed his fingers around the dog’s muzzle so that he could not bark. Sid was too nonplussed for a moment to speak. Arrows! It _could_ not be Niltci, for the Navaho boy had long since abandoned his bow, now that his white friends kept him in unlimited cartridges. Sid watched the ram in his death struggles, not daring to move so much as his head. Those arrows had been shot by some unknown Indian. These mountains were _inhabited_ then. He could see the two ewes tearing wildly down the arroyo toward a grim and scowling lava field that lay far below. They disappeared around a corner of granite, some distance down, but still the Indian who had fired the arrows did not come out of his hiding place.