see to it. It's been a fierce rain all the evening, perhaps that loosened the mass."
"Hardly," said Ralph thoughtfully, and then, inspecting a glazed piece of paper with some printing on it he had just picked up, he looked queerly at his companion.
"Give them the trouble signal in the caboose, please, Mr. Griscom," said the young fireman. "I think I had better get back there at once. Have you a revolver?"
"Always carry one," responded Griscom.
"Keep it handy, then,"
"Eh!" cried the engineer with a stare. "What you getting at, lad?"
"That is no landslide," replied Ralph, pointing at the obstruction.
"What is it then?"
"Train wreckers—or worse," declared Ralph promptly. "There is no time to lose, Mr. Griscom," he continued in rapid tones.
"Of course, if not an accident, there was a purpose in it," muttered Griscom, reaching into his tool box for a weapon, "but what makes you think it wasn't an accident?"
Ralph did not reply, for he was gone. Springing across the coal heaped up in the tender, he climbed to the top of the first freight car and started on a swift run the length of the train.
