interrupted the Professor, coming up. "Señor, do you know one Juan--"

"Yes, he knows him," grinned Stacy. "He's very well acquainted with
the gentleman."

"Then where may we find this Juan

"That's Juan-- that's your guide," Stacy informed the Professor.

"You-- are you the guide?"

"Si, señor."

The Professor opened his eyes in amazement. The burro, on the other
hand, stood with nose to the ground sound asleep, oblivious to all
that was taking place about him.

"Why didn't you make yourself known-- why haven't you helped us to
unload?" demanded the Professor in an irritated tone.

"Me no peon. Me guide."

"He's a guide," explained Stacy. "Guides don't work, you know,
Professor. They are just ornaments. He and the burro are going to pose
for our amusement."

The boys laughed heartily. Professor Zepplin uttered an exclamation of
impatience.

"Sir, if you are going with this outfit you will be expected to do