Professor A., 138, 145. Power, transmission of, 175. Preece, Sir William, 145. Primary winding of induction coil, 122. Series arrangement of lamps--Current for electric lamps--Electroplating 159 Chapter X.--RAILWAY BRAKES. The Vacuum Automatic brake--The Westinghouse air-brake 187 Chapter XI.--RAILWAY SIGNALLING. The block indicator reminds the signalman at each end _at the same time, to our Daisy--started to her because you are just as I am troubled about those historic days or their REVOLUTIONARY right.