“Quick, boys, run for the auto,” shouted Frank, taking advantage of this sudden diversion.

Before the others could recover their wits, the boys, half dragging the man they had rescued with them, reached the door, and the next minute were in their auto.

“Shoot at their tires,” they heard old Barr shout, as they whizzed off down the road.

A shower of bullets followed, some of which struck the tonneau. But none of the missiles, fortunately, either wounded them or hit the tires, in which latter case they would have had to come to a standstill.

Frank put on full speed, and with the start they already had they soon outdistanced the auto which held Barr and his two companions. It followed them for a short distance, however, old Barr shouting maledictions after them.

“Oh, how can I ever thank you boys?” exclaimed the rescued man, as he gratefully clasped Frank’s arm. “That terrible man, Luther Barr, would certainly have blinded, and perhaps killed me, if you had not arrived in time.”

“How did you come to get in his power?” asked Frank.

“It is a long story, young man, and begins in Arizona,” said the stranger; “but first, I must tell you my name is Bart Witherbee, and I am well known in the West as a prospector. I located a valuable mine, which seems abandoned, some time ago in the northern part of the state, and I have managed to keep the location a secret till I can file a formal claim to it. In some way the two men whom you saw with Barr to-night, and who are Hank Higgins and Noggy Wilkes, two bad men, and gamblers, heard of this. They formerly worked for Barr, who has mining property in Arizona. When they learned I was coming to New York to see my daughter, they came along, too, and informed Barr of what they knew about the valuable mine I had found. At that time I did not know Barr, and by these two men was tricked into meeting him on the pretense that he had some real estate he was willing to trade for mines in Arizona. I have other claims beside the one I located recently, and I thought I might trade one of them for some of Barr’s property in the East.

“You can imagine my consternation when we arrived out here to find myself in the hands of Hank Higgins and Noggy Wilkes. I tried to run, but they caught and tied me, and, as you saw, would have either killed me or maimed me for life if you hadn’t saved me.”

“What part of Arizona is your mine in?” asked Harry, deeply interested, as they all were, in the man’s narrative.