"This is pie to me," they could hear Dayton whispering, in a cautious undertone, "I told those kids I'd get even on them for driving me out of Lower California, and here's where I do it."

Nat gritted his teeth as he listened.

"You're going to get something that you don't expect," he muttered softly to himself.

The next instant the barn door framed three figures. Behind them were two ponies. The feet of the little animals were swathed in sacks so that they made no noise at all.

"Pretty foxy," whispered Joe, "they've padded the ponies' hoofs."

"Hush!" ordered Nat, "don't say a word or make a move till I give the signal."

"There's the car," whispered Jeffries, as they drew closer and the shadow of the place enclosed them, blotting out their outlines.

"Seems a shame to run it over a cliff, don't it?" put in Dayton's fellow pony rider.

"That's the only thing to do with it," said Dayton abruptly, "I want to give those kids a lesson they won't forget."