Iris of eye, 249; stop, 249. Kelvin, Lord, 158. Keyless winding mechanism, 425, _426_, 428. Kite, 345. Lamp, arc, 182; how it affects the furnaces.] [Illustration: SCENE IN THE WORLD 36 CHAPTER IV. AN OPEN DOOR 138 CHAPTER XI. A "FANATIC." 153 CHAPTER XII. LOGIC.