This appealed to Chester.

"Good!" he cried, and both stopped in their tracks to listen.

A second and there came to their ears a sudden startled shout, followed
by a fearful yell, a moment of silence, and then a crash.

"Good-by engine," said Hal. "That's a good job done. You perished nobly.
Now," to Chester, "let's get away from this spot as fast as we can."

They turned their faces in the direction from which they had come, and
set out at a brisk pace. They plodded along for an hour through the open
country, finally coming to a dense woods.

"Guess we had better try and lose ourselves in here," said Chester.

"Right you are," agreed Hal.

They entered the friendly shelter of the trees. Here they were forced to
travel more slowly. They made good progress, however, and at the end of
another hour had covered considerable distance.

"I guess we are safe enough as long as we can stay in the woods,"
said Chester.

"Don't be too sure," declared Hal. "It's the unexpected that
always happens."

The words were hardly out of his mouth when the truth of them was proved.