will move him from his game of hiding.
Then we'll have to get that paper, with his signature, and save the mine
for his family."

"That's what I mean to do," replied the other, with grim determination.
"If he's so wrapped up in his scheme that he just won't come out, we're
going to do the best we can to save his fortune in spite of him. There's
his daughter Janice to think of. Above all, we mustn't let that schemer,
Eugene Warringford, get his fingers on the document."

That night they made camp in a little cave that offered an asylum. The
boys rather fancied the idea for a change. And they passed a very
comfortable night without any alarm.

Once, Bob being on duty near the mouth of the opening, heard a shuffling
sound without. He could not make out whether it was caused by the
passage of a human being, or a bear. Half believing that they were about
to be attacked by some animal that fancied the cave as a den, he had
drawn back the hammer of his rifle, and watched the round opening that
was plainly seen at the time, as it was near morning, and the small
remnant of a moon was shining without.

But he waited in vain, and, as the minutes passed without any further
alarm, Bob heaved a sigh of relief. It was all very well to think of
shooting big game; but under such conditions he did not much fancy a
close battle.

When morning came, and he had told Frank about it, the other immediately
went out to look for traces of the animal. As he came back Bob saw by
the expression on his chum's face that Frank had made some sort of
discovery.

"How about it?" he asked.

"It was no bear," replied the other, decidedly.

"But sure I heard something moving, Frank, and I was wide-awake at the
time, too," Bob protested.

"I guess you were, all right," Frank admitted. "A man passed by, not far
from the mouth of the cave. He even stooped down, and looked in, though
careful not to let his head show against the bright background. Then he
went off again up the canyon."

"Since you know so much, Frank, perhaps you could give a guess as to who
he was," said Bob, eagerly.

"No guess about it," came the reply. "I've examined his track before,
and ought to know it like a book. It was Abajo, Bob!"

"Then ten to one, Spanish Joe and Eugene were close by!" declared Bob.
"Say, do you really believe he knew we were in here?"

"Of course he did," Frank asserted. "Perhaps they saw us enter. But
Abajo also knows that both of us are fair shot