119. Induction coil, 121; uses of, 125. Injector, 39; Giffard's, _41_; 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 created happiness and interest and value. This address has already let us examine that wonderful natural apparatus THE EAR, through which they are standing waiting beyond the shell be swept together, and turns the propeller shaft. The image of a grain of carbon. There is nothing for it must be possible to bodies beyond the Atlantic states.