Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 518
by the instrument connectedwith it. So saying, Uncle Tom showed a pic-ture of the apparatus. It looks like a thermometer, said May. It does; and it is a similar instrument, calleda < manometer, or measurer of the pressure ofgases, such as air. Under the jar there is aVol. XXIV.—64. wheel, like… … DIAGRAM OF THE SPIRAL STAIRCASE AND ELEVATORS TOTHE SUMMIT OF THE JUNGFRAU. der the glass jar. John, however, is placedin the wheel, while Jim is allowed to lie down qo6 THE JUNGFRAU TUNNEL. quietly wherever he pleases under the jar.We then start the wheel going in the directionof the hands of a…
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