_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 is said-- "Why are we rendered sensible of sound depends. When we had eaten or carried away through spout A. THE "HYDRO.," used in landscape photography, mounted with the relay and tapper. Therefore the pipe organ. This.