Suddenly Bob gave a jump. In his vest pocket was a small ruby lantern-slide of red glass, such as nearly every professional photographer possesses.
In feverish haste Bob drew forth the bit of glass and held it in front of the white light.
Then the red light was waved wildly to and fro as the express dashed past.
Had his signal been seen?
CHAPTER XXXIII
BOB AND HIS MOTHER—CONCLUSION
The single second which followed the passage of the express train seemed to Bob an age.
He continued to swing the red light until he heard a shrill shriek of the whistle and saw the fire fly from the wheels of the locomotive as the engine was reversed, and then he staggered up against the little station.
The express train had been saved!
In less than ten seconds the conductor came running forward.
“What’s the matter, Boswell?” he cried. “Quick, we are behind time already!”