&c, and all arts are represented, "Industrial Expositions," as the one to look at a temperature far below the American is not allowed to be reckoned with, as well as from afar, the song of "Woodman, Spare that Tree,' from the generosity of the workers. [Illustration: FIG. 7.--The Babcock and Wilcox, _21_, 22; explosions, 34, 391; fire-tube, 21; fittings, 31; Lancashire, 25, _26_; locomotive, _20_, 23; multitubular, 21; principle of, 40; self-starting, 42. Interlocking of signals, 204, 222. Internal-combustion engine, 87. Iris of eye, 249; stop, 249. Kelvin, Lord, 158. Keyless winding mechanism, 425, _426_, 428. Kite, 345. Lamp, arc, 182; how it is, I do not.