"Hale Bradford! Could it be possible," thought Nat, "that the rascally millionaire who had appropriated his father's mine was also associated with Col. Morello, the Mexican outlaw?"

Nat suddenly recalled, however, that it was entirely likely that Bradford, in his early days on the peninsula, had met Morello, who, at that time, was a border marauder in that part of the country. Perhaps they had met since Bradford's abrupt departure from Lower California. Or perhaps, as was more probable, it was Dayton who had told the colonel all about the Motor Rangers, and this reference to Bradford was simply a bluff.

"Yes, I knew Hale Bradford," was all that Nat felt called upon to say.

"Hum," observed the colonel, carefully regarding his yellow paper roll, "and he had good reason to know you, too."

"I hope so," replied Nat, "if you mean by that, that we drove the unprincipled rascal out of Lower California."

"That does not interest me," retorted Morello, "what directly concerns you is this: one of my men, an old acquaintance of mine, who has recently joined me, was done a great injury by you down there. He wants revenge."

"And this is the way he takes it," said Nat bitterly, gazing about him.

"I don't know how he means to take it," was the quiet reply. "That must be left to him. Where is Dayton?" he asked, turning to Manuello.

"Off hunting. The camp is out of meat," was the reply.

"Well, I expect Mr. Trevor will stay here till he returns," remarked the colonel with grim irony, "take him to the west cell, Manuello. See that he has food and water, and when Dayton gets back we will see what shall be done with him."