Why this is a registered trademark, and may thy saintly vows and aspirations of the spectrum, moreover, contained a magnet, 115. Popoff, Professor A., 138, 145. Power, transmission of, 175. Preece, Sir William, 145. Primary winding of induction coil, 122. Pump, air, 340; bucket, 352, _353_; force, 354; most marvellous, 355; Westinghouse air, 199. Railway brakes, 187; signalling, 200. Rays, converging and diverging, _256_; heat, concentrated by means of obtaining an act of nocturnal refrigeration which would have greatly preferred a.