The next instant the lad became conscious of a thunderous sound that seemed to shake the earth. It was the roar and rush of thousands of hoofs. “The cattle have stampeded!” gasped Jack to himself, and the next instant: “The firing to the east has started them off; and I am right in their path.” He swung his pony in an effort to cut off part of the herd. But through the darkness they thundered down on him like a huge overpowering wave of hoofs and horns. Jack fired with both his six–shooters, hoping to turn the stampede; but he might as well have saved his cartridges. No power on earth can stop stampeding cattle till they get ready to quit. Jack was in the direst peril. But he did not lose his head. He swung Dynamite around once more and urged him forward. It was a race for life with the maddened cattle. He had lost all thought of the hooded rider who had pursued him so closely. His sole idea now was to escape alive from the stampede behind him. Had he dared, he would have tried to cut across the face of it. But he knew that he stood every chance of being trapped should he do so. He therefore decided to trust to Dynamite’s fleetness and sure–footedness. It made him shudder to think what would befall him if the pony happened to get his foot in a gopher hole and stumble. A Texas steer in a stampede can travel every bit as fast as a pony, and it was not long before the steers were in a crescent–shaped formation, with Jack riding for his life in about the center of the half moon. On and on they thundered in the mad race. To Jack it felt as if they were beginning to go down hill, but he was not certain. Nor had he the least idea of the direction in which he was going. He bent all his faculties on keeping ahead of that hoofed and horned wave behind him. Dynamite went like the wind. But even his muscles began to flag under the merciless strain after a time. He felt the effects of his strenuous lesson of the morning. Jack was forced to ply quirt and spur to keep him on his gait. But the signs that the pony was playing out dismayed the boy. His life depended on Dynamite’s staying powers, and they were only too plainly diminishing. The slope down which they were dashing was a fairly steep one, which accounted for Jack’s feeling the grade. It led into a broad, sandy–bottomed, dry water course, or “arroyo” as they are called in the west. But of this, of course, Jack was unaware. All at once Jack felt Dynamite plunge into a thick patch of grease–wood. The pony slowed up as he encountered the obstruction, but Jack’s quirt and spur urged him into it. But that momentary pause had been nearly fatal. Jack could now almost feel the hot breath of the leading cattle. Despite his grit and courage, both of sterling quality, Jack’s heart gave an uncomfortable bound. He felt his scalp tighten at the narrowness of his escape. But still he urged Dynamite on. Luckily he wore stout leather “chaps,” or the brush would have torn his limbs fearfully.