What One Big Gun Can Do

A shot f rom the 16 inch gun designed for the defense of the New York harbor developed au energy of 54,320 foot tons, and the shot bored a 16J4 inch hole through 20 inches of componnd steel or iron plate, 8 inches of iron, 20 feet of oak. 5 feet of granite, 1 1 feet of concrete and flnally buried itself in a sixfoot wall of brick inasonry.