POWER OF DESTRUCTIVE INVENTIONS.
According to the Popular Science Monthly, "a $3,000 square safe of the most approved construction was attacked by inserting in the crevice about the locked door four and eight-tenths ounces of nitro-glycerine, and in eight minutes after the operation of loading was begun, the charge was fired, with the result that the whole of the jamb below the door was blown out and a hole made in the door of sufficient size to admit the hand and arm, while the doors and divisions of the interior compartments were completely shattered. On repeating the operation with four ounces and a quarter of forcite dynamite, the door was completely torn off. Among experiments made to demonstrate the resistance of structures to attack by a mob, was one upon a safe twenty-nine inches cube, with walls four inches and three-quarters thick, made up of plates of iron and steel, which were re-enforced on each edge so as to make it highly resisting, yet when a hollow charge of dynamite nine pounds and a half in weight and untamped was detonated on it, a hole three inches in diameter was blown clear through the wall, tho a solid cartridge of the same weight and of the same material produced no material effect."