Dr. Rander announced that he would stay with the mules and catch a short rest. He cautioned the boys not to stay too long.

The store that Joe referred to was nothing more than an adobe hut filled with curios of the Andes. They purchased a few articles as souvenirs and started back to the edge of town, where the old man was waiting.

Suddenly there came the sound of rough voices, and a moment later a dozen shots rent the air.


CHAPTER XIX
A Terrible Sight

“WHAT’S going on?” cried Joe Lewis, as a chorus of voices mingled with the sound of rifle shots.

“Some trouble somewhere,” returned Bob. “Wonder——”

He did not finish, for at that instant there came another shot, and a bullet whizzed by his ear.