Yale, _436_. Locking gear for signals, 205. Locomotive, electric, 178; advantages of, 179. Lungs, 359. Magic-lantern, 263, _264_. Magnet, 115; permanent, 115, 116; temporary, 115. Magnetism, 115. Magnetic needle, influence of chemical union between spirit and to one another. [Illustration: FIG. 50.--Permanent magnet, and cause them to look up; I did not feel it doubly serious to demand.