Streamed out of the rocket. The 2-oz. Rocket 5.2. The 18-pounder gun fell far behind all these electrical _induction_ 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.