In another moment he had vanished into the darkness, and they heard a drumming of hoofs grow fainter as he rode towards Prospect at a furious gallop. For a while there was nothing he could see, but when he swept across the last rise, and the lights of Prospect twinkled close in front of him, he made out a little patch of radiance beyond them on the prairie. It was evident to him that nobody at the homestead, which stood lower, would see it. Then he struck the horse again, and was riding by the stables at a wild gallop when a voice hailed him.

"That you, Mr. Leland?" it said.

Leland, remembering what instructions he had given the watcher, shouted and pulled up his horse with a struggle.

"Turn out the boys!" he said. "Get them along to the south side of the oats with the wet grain bags and shovels. Tom Gallwey's in the house?"

The unseen man said he was; and in another minute Leland, who rode on, swung himself down at the homestead door. Gallwey, who had apparently heard him coming, ran out.

"Bring me my old Marlin, and get yours," said Leland. "There's a fire-bug getting his work in to windward of us on the prairie."

Gallwey disappeared, but came back with two rifles in less than a minute. Leland, who had let the horse go, turned to him.

"We're going on foot to get that fellow if we can," he said. "I guess the boys will know what to do."

Gallwey considered that this was probable, for grass-fires are common at that season, and Leland had more than once explained exactly what the part of each would be in case one approached the homestead. He and his comrade accordingly set off through the bluff at a steady run, though Gallwey twice fell over an unseen obstacle, while, when they came out, there were two moving lines of fire, small as yet, but growing, on the prairie behind it. It was also evident that the hot wind would bring them down upon the oats. Leland, however, did not head for either blaze, but for a point some distance to the left of the one farthest off.

"That man means to make quite sure," he said. "He'll figure he's as safe as he was when he started the first fire, since we've shown no sign of seeing it."