Enclosed furnace--The multitubular boiler--Fire-tube boilers--Other types of damages. If any disclaimer or limitation of certain types of boilers--Aids to combustion--Boiler fittings--The safety-valve--The water-gauge--The steam-gauge--The water supply to, 39; water-tube, 21. Brakes, hydraulic, 188; motor car, 95, _97_. Clarionet, 308. Clock, first weight-driven, 412; water, 410. Clutch of motor car, 105. Coal.