"Wait here while I investigate," he whispered, "and be ready to jump back into the boat and shove off at a minute's notice." They nodded and turned to obey, as Jack, as silently as he could, crept on toward the hut, his revolver clasped ready for use at the slightest alarm. The Border Boy did not mean to be caught napping. In this manner he reached the wall of the hut nearest to the river, in which there was a small, unglazed window. Cautiously raising himself on tiptoe, Jack peered within. In a rough chair, by a table covered with the untidy remains of a meal, was seated an elderly Mexican, as shriveled and brown as a dried bean. The regularity with which he was "sawing wood" showed that he was as sound asleep as it is possible for a man to be. Still Jack knew that there are men who sleep with one eye open, so he did not relax an iota of his vigilance as he crept around the corner of the house. On the opposite side he found a doorway, and, noiselessly gliding in, he had the pistol to the Mexican's ear before whatever dreams the man might have been having were even disturbed. "Caramba, sanctissima! Santa Maria!" yelled the man, springing to his feet as if propelled by springs. But the uncomfortable sensation of the little circle of steel pressed to the nape of his neck brought him back again into the chair in a second, trembling like a leaf, and gazing in terror at the determined young figure standing over him. "Keep quiet and I'll not hurt you," said Jack, adding as an afterthought: "Do you speak English?" "Me spiggoty 'Merican," sputtered the trembling old Mexican. "All right, Jose, then listen: Are there any horses here?" The old man's eyes held a gleam of intelligence. "Cavallo, senor. One, two, t'ree horse over heel." "Oh, over the hill, are they?" said Jack to himself, then aloud: "You come and show them to me." "Mocho easy to find," protested the Mexican. Jack smiled to himself. He had been right, then. The old man was trying to trick him. Assuming a sterner air, he thundered out, "Tell me where these horses are or I'll kill you!" The threat proved effectual, as Jack had hoped it would. Dropping all his attempts at subterfuge, the Mexican told the boy that the horses were in a gully not a hundred feet from the house. On the Mexican being escorted there, still with the pistol held close to his head, his words were found to be true. Three horses, ready saddled and bridled, stood in the gulch, apparently reserved for the use of any one about the camp who should need them in a hurry. This much ascertained, Jack marched the Mexican back to the hut, where, with a rope, he leisurely proceeded to bind him. Then, amid the fellow's tears and supplications--for he evidently thought he was about to be killed--the boy marched him to the river bank. Walt and Ralph were naturally bubbling over with questions, but they said nothing as Jack sternly ordered the aged Mexican to board the boat.