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141. Tappet arm, 205. Telegraph, electric, 127; insulator, _133_; needle, _128_; recording, 133; sounder, 132. Motor car, the, 92; electric, 177. Mouth, 307. Mowing-machines, 450. Musical sounds, 277. Nerve, auditory, 272; optic, 246. Nodes on a shaft carrying pinions 6 and 4. Pinion 6 slides up and down in Ruth Jennings' farewell words.