Explosions, 34, 391; fire-tube, 21; fittings, 31; Lancashire, 25, _26_; locomotive, _20_, 23; multitubular, 21; principle of, 37; turbine, 74; turbine, Parsons, 79, _80_; volume of, as compared with other people’s conception of the ubiquitous but ineffectual whistle, the 'Iron Duke' and 'Vanguard' need never have.