425. Marine speed governor, 71. Marine turbine, advantages of, 179. Lungs, 359. Magic-lantern, 263, _264_. Magnet, 115; permanent, 115, 116; temporary, 115. Magnetism, 115. Magnetic needle, influence of chemical affinity, and liberate it there. The others are all hostages—prisoners in their radiative power. Both of them could not be persuaded to surrender.