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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 88

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[page][illegible][/page] which is not at all in accord with the others which run along very evenly 20', 21', 22', 23', 24' with this one exception which is much larger. It is obvious that a mistake has been made, probably in reading the Vernier. Consequently we are justified in throwing the observation out. It is customary among many observers to reject the first and last observations of a series on account of the unsteadiness of the observer. In the beginning he is perhaps a little nervous or his eye may not have become accustomed to the work and at the end he has become weary through constantly holding the instrument with one hand. In the lower left-hand corner we have spaces marked B, Ti and Te or barometer, interior temperature and
 
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