see only the top of his head. Then they started on his trail.

For an instant Amos Garwood was out of sight. Then, with a suddenness
that startled both trailers, Garwood stepped out from behind a
tree and right into their path.

"I cautioned you both," he announced sharply. "I shall not go
to that trouble again. Keep away from me. Never mind where I
am going, or what I am going to do."

Then a spasm of pain shot across the poor fellow's face. Calm
as he tried to keep himself, it was plain that his burned hand
and arm were causing him great suffering.

"Won't you come with us," pleaded Dick, "and get that arm of yours
attended to? We'll take you to the right place."

"To the right place?" mocked Garwood harshly. "Right into the
camp of my enemies, I suppose? Among those who deride my great
invention, and yet who would capture me and steal my wonderful
discovery from me. Boys, I have already told you that if you
follow me, you will follow me to grave harm. Beware in time.
Run! Leave me! Or your fates be on your own heads, for I am
master of the world and can force you to obey me!"

As Garwood spoke the last words another change crossed his face.
He reached into an inner coat pocket.

"You will not obey me," he remarked. "Therefore, I must act to
save myself and my great discovery. 'Tis as you would have it!"