The basic principles of the most commonly used lamp types and the circuitry which makes them operate are discussed. The two objectives of this book are to serve as a--(1) guide to economical lighting, and (2) a permanent reference source for troubleshooting. Areas dealt with include--(1) lighting fundamentals, (2) incandescent lamps, (3) incandescent lamp characteristics, (4) fluorescent lamps, (5) fluorescent lamp circuits, (6) fluorescent lamp starters, (7) fluorescent lamp characteristics, (8) mercury lamps, (9) troubleshooting, and (10) cleaning and cleaning methods. (RK)