Over gray No-Man's-Land stole down the shadows of night. The undulating prairie shaded dark to the western horizon, rimmed with a fading streak of light. Tall figures, silhouetted sharply against the last golden glow of sunset, marked the rounded crest of a grassy knoll. "Wild hunter!" cried a voice in sullen rage, "buffalo or no, we halt here. Did Adams and I hire to cross the Staked Plains? Two weeks in No-Man's-Land, and now we're facing the sand! We've one keg of water, yet you want to keep on. Why, man, you're crazy! You didn't tell us you wanted buffalo alive. And here you've got us looking death in the eye!" In the grim silence that ensued the two men unhitched the team from the long, light wagon, while the buffalo hunter staked out his wiry, lithe-limbed racehorses. Soon a fluttering blaze threw a circle of light, which shone on the agitated face of Rude and Adams, and the cold, iron-set visage of their brawny leader. "It's this way," began Jones, in slow, cool voice; "I engaged you fellows, and you promised to stick by me. We've had no luck. But I've finally found sign—old sign, I'll admit the buffalo I'm looking for—the last herd on the plains. For two years I've been hunting this herd. So have other hunters. Millions of buffalo have been killed and left to rot. Soon this herd will be gone, and then the only buffalo in the world will be those I have given ten years of the hardest work in capturing. This is the last herd, I say, and my last chance to capture a calf or two. Do you imagine I'd quit? You fellows go back if you want, but I keep on." "We can't go back. We're lost. We'll have to go with you. But, man, thirst is not the only risk we run. This is Comanche country. And if that herd is in here the Indians have it spotted." "That worries me some," replied the plainsman, "but we'll keep on it." They slept. The night wind swished the grasses; dark storm clouds blotted out the northern stars; the prairie wolves mourned dismally. Day broke cold, wan, threatening, under a leaden sky. The hunters traveled thirty miles by noon, and halted in a hollow where a stream flowed in wet season. Cottonwood trees were bursting into green; thickets of prickly thorn, dense and matted, showed bright spring buds. "What is it?" suddenly whispered Rude. The plainsman lay in strained posture, his ear against the ground. "Hide the wagon and horses in the clump of cottonwoods," he ordered, tersely. Springing to his feet, he ran to the top of the knoll above the hollow, where he again placed his ear to the ground.