hands.

"What did you give him, professor?" grinned Tad.

"Hot drops!" answered the man of science tersely.

"Not that stuff you fed me when I ate too much honey in the Rockies?"
questioned Stacy.

"The same."

"Wow! I had ten drops and it felt like a pailful when it got inside of
me."

"How much did you give Juan?" questioned Walter.

"Twenty drops," answered Professor Zepplin without the suspicion of a
smile on his face this time.

The Pony Rider Boys added their yells to those of the guide, only with
a difference. The more Juan drank of the spring water, the more did
the hot drops burn.

All at once he sprang up and started for the plain.

"Catch him!" commanded the Professor.

With a shout the lads started in pursuit. They overhauled the guide
some twenty rods from camp, he having proved himself fleet of foot.
Then again, the fire within him perhaps helped to increase his natural