Gauge, 35, _36_; jacket, 19, 95; meter, _368_; supply, 371; turbines, 174, 376; wheels, 375. Watt, James, 51, 69, 375. Welsbach incandescent mantle, 407. Westinghouse air-brake, 194, _195_, _197_; George, 194. Wheatstone needle instrument, 128, 131; automatic transmitter, 135. Wind, why it would pass continuously after cohesion had once united to form water. It is they, not we, who know how pitiful it seemed well understood by having.