FIRE ENGINES. The modern "fire engine" (also termed "motor pump") has a petrol power unit driving a pump which takes suction from a water supply and forces the water through lines of flexible hose to nozzles from which streams are directed upon the flames. In most cases, the engine is in the form of a mo tor vehicle having a four or six cylinder internal combustion motor of the usual type, but designed for the most severe kind of heavy duty service, the motor being employed not only to propel the apparatus along the road, but also to drive the fire pump when required, while the vehicle itself remains stationary. (See INTER