A chorus of yells from the mountaineers followed him, but Stacy Brown was too angry to listen. Already the pony's neck was flecked with foam, Stacy urging the animal on to renewed efforts by frequent applications of the pointless rowels which he rubbed vigorously against the little animal's sides.

"There he comes," shouted Tad as a report from Stacy's revolver reached their ears.

Glancing back the boys saw a cloud of dust rising between them and Jim Abs' store.

"Ride for it! We can get out of sight before he tops the ridge," shouted Tad.

Professor Zepplin, sharing in the youthful enthusiasm of the moment, touched spurs to his own horse and the party swept away.

In the meantime Stacy Brown, the sweat rolling from his face, was pounding across the plateau.

[CHAPTER VIII]

STALKING THE FAT BOY

The country on the other side of the rise was rugged, dotted with huge rocks and well wooded with second growth. It made an ideal hiding ground for one who wished to conceal himself.

"Cut off to the right," shouted Tad.