"Towards Rainbow Ridge. It wa'n't more'n ten minutes ago."

As Jack rode off a sudden thought came to him.

"I wonder if this could be a clew to the robber?" he asked himself. "Queer thing about his not riding his horse up to Ford's cabin. Why should he do that unless he was afraid the horse would be recognized. Why should he—Great Scott!" suddenly exclaimed Jack aloud. "I believe I know why. He had Sunger, and didn't dare let Ford see him! That's it! I believe I'm on the track of the man who has my pony and the Argent letters!"

CHAPTER XXV

JACK'S TRICK—CONCLUSION

Jack called to his horse, which really was a speedy mount.

"Come on, old boy!" he cried. "You may not be as good as Sunger, but he's had a hard time lately, being kept out among the mountains, and I don't believe he's up to the mark. We may catch him if that fellow stays to the road, though ordinarily my pony would run away from you, Dobbin."

Jack didn't care much what he called this horse. But he really liked the animal, as he did all horseflesh, and the beast responded readily to him.

On they swept down the mountain trail. Jack's eyes watched eagerly as he made turn after turn at top speed; but for some time he saw no signs of any rider ahead of him.

"There's no way of getting off on a side trail for the next half mile," reflected Jack, as he rode on. "If I can come up to him in that distance I'll have him."