Show steel replaces rope not so many years ago all forms forma of rope and cable were made from vegetable fiber how little of this athla do you see cee nowadays where extremely heavy loads have to be supported I 1 you gee eee a thin steel cable the size of a lead pencil holding tons ton of weight that would require an old time rope ot of mammoth dimensions to ro the big suspension bridges like the brooklyn bridge are almost entirely supported from steel cables why because their known strength can be b figured almost to the traction fraction of a pound |