"In this direction as nearly as I could judge," Dick affirmed.

For some moments they traveled onward. Then they halted to listen.

"I don't know whether I'm any good at judging distances," Dick
whispered, "but it seemed to me that whatever exploded was not much
more than three hundred yards from camp."

"About that distance, I should say," Tom agreed.

"Then we've gone about as far as the place of the explosion.
Suppose we keep very quiet and listen."

"Ugh!" grunted Greg. "I hope the earth doesn't blow up under
our feet."

"Go back to camp, if you're nervous," smiled Dick, but Greg remained
where he was.

"I'm going out a little way and prowl," whispered Dick, pointing
in the direction he had chosen. "Tom, why don't you travel in
about the opposite direction?"

Reade nodded.

"Where shall I go?" asked Greg.

"You had better remain right here," Prescott whispered. "If you
should hear either of us yell for help then you could start in
the direction of the sound."