on't try any tricks, you may be
sure."

"And in the morning?" Bob went on.

"Why," declared Frank, firmly; "there's only one thing to be done--we
must fire John Henry, even if we have to pay him the whole sum agreed on
for the week."

"I'm glad to hear you say that, Frank; because I'd hate to have him
along. Why, he might take a notion to step on my fingers when I was
climbing up after him, and claim it was only an accident, but if I had a
broken leg, or a cracked skull, that wouldn't do me any good, I take
it."

"There, Joe is moving off, and we can head for camp," Frank remarked, as
they still hovered behind the spur of rocks that had concealed them,
though allowing a view of the little camp.

"But you don't want to tell John Henry that we saw him making a bargain
with Spanish Joe, I take it?" Bob questioned.

"That's right, we don't; and try to keep from looking as if you
suspected him. Now his back is turned, come along," and Frank, rising,
led the way.

The preparations for supper went on apace. The guide was unusually
talkative, Bob thought, and he wondered whether it was not the result of
a disturbed conscience. Perhaps John Henry might not be wholly bad, and
was worried over having entered into an arrangement to betray his
generous young employers.

"What are we going to do for a guide when we let him go?" asked Bob,
later on, after they had eaten supper, and John Henry had wandered down
to the river for a dip, as he said.

"We'll have to trust to luck to pick up another," Frank declared. "And
if it comes to the worst, we can go it alone, I reckon. I've never been
up against such a big job as this, but I think I'd tackle it, if I had
to. But wait and see what another day brings out."

When it came time for them to retire they began talking about their
ranch habit of standing guard. The guide laughed at the idea of any harm
coming to pass while they were there in the canyon.

"Lots of other tourists are camping inside of three mile from here," he
said; "and I heard the sheriff of the county himself is somewhere down
in the canyon; so it don't look as how there could anything happen. But
just as you says, boys; if it makes you feel better to stand guard, I
ain't got a thing agin it."

The night passed without any sort of attack. Either Frank or Bob sat up
all the time, with a trusty rifle ready; but there was no occasion to
make use of the weapon.

With the coming of morning they made ready to ea