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, 110. Spot, blind, in eye, 251. Zech, Jacob, 414. Zeiss field-glasses, 260. THE END. *** END OF THE MARINE TURBINE. (1.) Absence.