"Why were you sleeping in an empty?" asked Sandy.
"Because I like plenty of fresh air!" replied the boy with a chuckle.
While the boys talked the tramp arose and sneaked away, limping over the ties as if tickled to death to get out of the way of the three youngsters.
As he disappeared in the darkness Tommy turned to the boy who had dropped out of the car to ask him a question.
The boy was nowhere to be seen.
"Now we've gone and done it!" cried Sandy.
"I guess we have!" agreed Tommy. "We've let the third boy get away from us! And we couldn't have done a worse thing!" he went on, "because the boys in the mine will know that we are still in this vicinity!"
While the boys stood blaming themselves the sharp call of the Wolf pack came to them.