"Gone. But wait," whispered Jones. He knew the savage nature, and he knew how to wait. After a long time, he cautiously crawled out of the thicket and searched the surroundings with a plainsman's eye. He climbed the slope and saw the clouds of dust, the near one small, the far one large, which told him all he needed to know. "Comanches?" queried Adams, with a quaver in his voice. He was new to the plains. "Likely," said Jones, who thought it best not to tell all he knew. Then he added to himself: "We've no time to lose. There's water back here somewhere. The Indians have spotted the buffalo, and were running the horses away from the water." The three got under way again, proceeding carefully, so as not to raise the dust, and headed due southwest. Scantier and scantier grew the grass; the hollows were washes of sand; steely gray dunes, like long, flat, ocean swells, ribbed the prairie. The gray day declined. Late into the purple night they traveled, then camped without fire. In the gray morning Jones climbed a high ride and scanned the southwest. Low dun-colored sandhills waved from him down and down, in slow, deceptive descent. A solitary and remote waste reached out into gray infinitude. A pale lake, gray as the rest of that gray expanse, glimmered in the distance. "Mirage!" he muttered, focusing his glass, which only magnified all under the dead gray, steely sky. "Water must be somewhere; but can that be it? It's too pale and elusive to be real. No life—a blasted, staked plain! Hello!" A thin, black, wavering line of wild fowl, moving in beautiful, rapid flight, crossed the line of his vision. "Geese flying north, and low. There's water here," he said. He followed the flock with his glass, saw them circle over the lake, and vanish in the gray sheen. "It's water." He hurried back to camp. His haggard and worn companions scorned his discovery. Adams siding with Rude, who knew the plains, said: "Mirage! the lure of the desert!" Yet dominated by a force too powerful for them to resist, they followed the buffalo-hunter. All day the gleaming lake beckoned them onward, and seemed to recede. All day the drab clouds scudded before the cold north wind. In the gray twilight, the lake suddenly lay before them, as if it had opened at their feet. The men rejoiced, the horses lifted their noses and sniffed the damp air. The whinnies of the horses, the clank of harness, and splash of water, the whirl of ducks did not blur out of Jones's keen ear a sound that made him jump. It was the thump of hoofs, in a familiar beat, beat, beat. He saw a shadow moving up a ridge. Soon, outlined black against the yet light sky, a lone buffalo cow stood like a statue. A moment she held toward the lake, studying the danger, then went out of sight over the ridge.