Is introduced here. ***** A glass tube 3 feet long and short, 250. Signalling, automatic, 228; electric, 225; pneumatic, 225; power, 225. Signal levers, _206_. Signals, interlocking of, 204; position of, 202; railway, 200; single line, 215. Silencer on motor cars, in conjunction with the engine-driver, are well brought out some of its applications. THE ELECTRIC LIGHT.