THE DIFFERENCE.
A locomotive engineer and a marine engineer were disputing over the relative danger of their occupations, each one claiming that his own condition was the less perilous.
"Nonsense!" exclaimed the steamboat man. "If you are on your engine, and you go crash-bang into another train, why, there you are!"
"Yes," answered the railroad man; "and if you are in your engine-room at sea, and the boiler bursts, where are you?"