Head M turns a cog, C. This gears with a traction-engine, motor car, 95, _97_. Clarionet, 308. Clock, first weight-driven, 412; water, 410. Clutch of motor cars, 109. Siphon, _351_. Slide-valve, 49, 50, 51; setting of, 53. Edison, Thomas, 310. Edison-Bell phonograph, 310. Electricity, current, 115; forms.