...In vain I tried to bring to my recollection the way I had been taught to measure a river by taking an angle with the sextant... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...He was greatly interested with the sextant, or, as he called it, “the looking-glass of the sun...
W.H.G. Kingston 「Great African Travellers」
...As this quadrant was fitted only to determine the altitudes of thecelestial bodies, Tycho constructed a large sextant for the purpose ofmeasuring their distances...
David Brewster 「The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler」
...Regarding it as a new and unusual phenomenon, he hastened to hisobservatory, adjusted his sextant, and measured its distances from thenearest stars in Cassiopeia...
David Brewster 「The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler」
...Began to construct astronomicalinstruments, especially a quadrant and a sextant...
Oliver Lodge 「Pioneers of Science」
...The sextant, as used by navigators, was also invented byNewton...
Oliver Lodge 「Pioneers of Science」
...The sailor can measure thedistance at any time by his sextant...
Henry Warren 「Recreations in Astronomy」
...The little asterism Sextans, the Sextant, lies in the region betweenRegulus and Alphard...
William Tyler Olcott 「A Field Book of the Stars」
...Since my last attack of ophthalmia, I suffer great pain andconfusion when using the sextant...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
...I suddenlyput down the sextant, and having the rifle almost in position, I grabbedit suddenly with my left hand and fired into the thickest mob, whereupona horrible howling filled the midnight air...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
...Idared not make any quick movement, but slowly withdrawing my right handfrom the sextant, I took hold of my rifle which lay close alongside...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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