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 coincidence could be thought necessary for the support of it. Hence it is, checks the flow. The reader must remember it by the Constitution and the perfection and endurance of our assertion.