ScientificAmerican1915-03-06.jpg Scientific American 1915-02-27ThumbnailsScientific American 1915-03-06 Back-Cover AdScientific American 1915-02-27ThumbnailsScientific American 1915-03-06 Back-Cover AdScientific American 1915-02-27ThumbnailsScientific American 1915-03-06 Back-Cover AdScientific American 1915-02-27ThumbnailsScientific American 1915-03-06 Back-Cover AdScientific American 1915-02-27ThumbnailsScientific American 1915-03-06 Back-Cover Ad

Bridge out, and racing steam locomotive runs headlong over the end of the rails and out into the gap.