Jack flung himself face downward on the turf at the crest of the precipice he had so miraculously conquered. His senses were swimming, his lungs felt as if they would burst, his heart beat wildly, shaking his frame. In truth the boy had come perilously close to the limit of endurance. The feat he had accomplished would have been a test to a hardened Border man, let alone a youth. For the first few minutes Jack felt a deep conviction that he was going to die—and he didn’t much care. But as life came back he struggled to his feet and began to look about him. First he peered down into the valley he had left to see if he could signal Alvarez and give him to understand that he was bringing help if possible. But deep purple shadows now obscured the valley floor, and he could see nothing of the drama that was taking place below him. It will be recalled, of course, that we left Alvarez thunderstruck at the approach of three figures along the valley from the direction of the Pool of Death. This was just after he had watched Jack’s speck–like form vanish over the cliff top. For the sake of clearness we will now relate what took place in the valley following Alvarez’s discovery of the approach of the newcomers, and then go on to tell what befell Jack after his recovery from exhaustion. Alvarez kept his eyes fixed in wonderment on the trio as they came down the valley. All at once he recognized one, slightly in advance, with a cry of astonishment. At the same instant Captain Atkinson, for it was he, recognized Alvarez. For an instant neither spoke, and the two lads accompanying the captain, who, as the reader will have guessed, were Ralph Stetson and Walt Phelps, also came to a halt. “What’s the matter, captain?” inquired Ralph, regarding the Mexican with some astonishment, for his perturbation was only too evident. “Why, boys, of all the adventures that have befallen us since we set out to look for Jack this is the most surprising.” “How is that?” inquired Ralph. “Simply that this man before us is the very Alvarez about whom I told you the other night.” But the reader must be wondering how the captain of the Rangers and the two lads came to be in the inaccessible valley. To explain this we must, at the risk of being tedious, go back a few hours. The morning following Captain Atkinson’s narration of his experience with Alvarez the trail had once more been taken up. Before many hours had passed the searchers came to the fork in the Rio, and stopped almost nonplussed. They had no means of judging whether the boat or raft which they believed had carried off Jack had gone down the Rio or had been swept down the branch stream.