In the fight which followed in the dark cave, the boys and Tom Bodine had won. The three others had been made prisoners. Learning their story and realizing the Mexican rebels were being employed as pawns by Von Arnheim, to the detriment of his own country, the American Stone had swung his allegiance to the boys and had been of material aid in effecting the subsequent rescue of Mr. Hampton. All this came back to Jack in a flash, and he wondered if he had heard Frank aright. How in the world could Frank be speaking with Roy Stone? Frank was listening in wrapt attention to whatever message was coming over the radio, and Jack could not bear the suspense. He grasped Frank by an arm. “Are you dreaming?” he asked. “Tell me what all this is about?” “Wait a minute, Roy, wait a minute,” Frank again said, speaking into the telephone transmitter. “Jack Hampton is here and he thinks I’m going crazy.” Then he turned to Jack with shining eyes. “It’s Roy Stone all right enough,” he said. “He’s flying for the Spanish government, which is having one of its numerous wars with the Riff tribesmen of Morocco. At least, he’d been flying for the Spaniards but decided to quit fighting the Moors who had a better right to their own country than the Spaniards. Now he is crossing the desert to Abyssinia, where somebody told him there’s a war he could have a hand in. Anyway that’s what I gather. He was forced to descend at the Oasis Aiz-Or, and there found Amrath who told him of us. He recognized the names and wants to know if he can be of help.” “Can be of help?” shrieked Jack. Seizing the transmitter he called into it: “Hello, old scout. This is Jack Hampton. Come a-flying. You’ll be an angel from heaven.” Releasing the transmitter, Jack darted away, calling to Frank: “Keep him till I get back. I’m going to round up Dad.” Mr. Hampton was not in sight in the grove, and Jack dashed out into the hot sunshine and up the Great Road toward Korakum. Despite the oppressive heat in the pass, he ran as if he had wings on his heels. So great was his sense of elation at finding an airplane and a friendly pilot near enough to be of aid, though just how that aid could be employed he had not yet decided, that he would have been able to run all the way to Korakum without feeling fatigue. As matters turned out, however, that was unnecessary. Before he had gone far, Jack saw Mr. Hampton appear in sight on camel-back. He waved an arm frantically for his father to hurry, and the latter, alarmed, put his animal to a trot. “What’s happened now?” he called, as he drew nearer. “Hurry along to the grove, Dad,” panted Jack. “I’ll follow as fast as I can. The radio’s working and we’ve got an angel on the wireless.” “Jack,” demanded his father, “have you gone crazy? Out here in this sun without your helmet, too.”