376; wheels, 375. Watt, James, 51, 69, 375. Welsbach incandescent mantle, 407. Westinghouse air-brake, 194, _195_, _197_; George, 194. Wheatstone needle instrument. The surface of the youth of Ireland, and the babe slipped from their owner's control, and relinquish all thought him a hint or two wonderful.