And so, a few days later the sheep which had been held in readiness
south of Spur Creek were driven back into Mexico.

"Well, Nort, suppose you tell us how it all happened," suggested Bud,
when matters at Diamond X were about normal again. "How did you come
to disguise yourself like a Greaser, go off to the professor's camp and
get the deeds where Del Pinzo had hidden them? Tell us."

"It isn't much of a story," began Nort, modestly enough. "In the first
place, you know about as much of the beginning of it as I do. Del
Pinzo heard about the government opening the range lands, and he knew
the deeds to Spur Creek must be here. So he organized a robbery and
carried it out, drawing us away from the place by a lot of shooting.
Professor Wright, as of course you know, had nothing to do with it.
His coming was just a coincidence.

"Those mysterious lone riders were sent by Del Pinzo to see how things
were going, and that rocket signaling was, as we guessed, communication
from one of Del Pinzo's gang to another. Then, when that Greaser had
the deeds safely hidden, as he thought, he gave the signal for the
sheep to start for Spur Creek."

"But how in the name of Zip Foster did you know where he had the deeds
hidden?" cried Bud.

"I didn't," answered Nort. "I simply guessed that he had taken them,
or had some one take them for him, and I reasoned he would keep them
near him, in the professor's camp. So, with your dad's permission,
Bud, I disguised like a Greaser and went to work in the fossil camp. I
had to kidnap one of the regular Greasers, and pass myself off as his
brother, which I did. By the way," he remarked to Slim, "we can let
Feliece go now."

"All right," chuckled Slim, who was one of the few in the secret. "He
didn't mind being a prisoner here, for he got well paid and had plenty
of grub."

"After I established myself at the camp," went on Nort, "and even the
professor didn't recognize me, I made it my business secretly to keep
on Del Pinzo's trail until I located where he had hidden the deeds, in
one of the many excavations made in searching for fossil bones.

"Then, when the Brontotherium was really found there was enough
excitement so that I could sneak over to the hiding place, take out the
right papers and stick in some dummies I had all ready. Then I sent
word to Mr. Bonnett, and came on as soon as I could with the deeds.
Zeb Tauth, the janitor whom the professor brought with him as a sort o