As they walked back to the wagon, having brushed the dirt from their clothes, the boys saw a big hole in the ground, not far from where Mr. Post had protected them from injury by sending them on the run out of danger.

"What did that come from?" asked Nat.

"Nitro-glycerine," replied Mr. Baker. "The juice is powerful stuff."

The boys agreed with him.

"Call in and see me any time you're in this direction," said the well-shooter, as he shook hands at parting with Mr. Post and the boys.

"I will," replied the miner, "when you've gone into the grocery business or taken an agency for a life insurance company. Otherwise it's too risky."

When the travelers got back to the station they found the engineer putting the finishing touches to the repairs he and the fireman had been making. The train was about to start.

"Where have you been?" asked the conductor as the boys and the miner got aboard.

"We've been having a race with death and it nearly won," replied Mr.
Post, more solemnly than he had yet spoken.

"What's the matter with him? Is he one of those religious fanatics?" asked the conductor, as the miner hurried into the car.