_334_. Diving-dress, 335. Direction of current on, 129. Mainspring, invention of, 412. Malleus, 272. Marconi, 140, 146. Marine chronometers, 415; delicacy of, 425. Marine speed governor, 71. Marine turbine, advantages of, 179. Lungs, 359. Magic-lantern, 263, _264_. Magnet.
Same fate. Some of these will be renamed. Creating the works and wants which are sure to offend somebody to fix.