The geography of the heavens and classbook of astronomy; (1863)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, Whitall, Henry, 1819-1887? Celestial planisphere. [from old catalog] · New York, Mason brothers; Boston, Mason & Hamlin; [etc., etc.] · leaf 196
proof stated ? Who first sailed around the world? Who next?3S1. In what direction did they sail? How did these voyages prove the earth to be 194 ASTRONOMY. contrary to observation. The figure of the Earth is, therefore,spherical. 382. The convexity of the Earth, north and south, is provedby the… … Suppose an observer standingupon the Earth, and viewing thepole star from the 45° of Northlatitude; it would, of course*appear elevated 45° above his,visible horizon. But let himrecede southward, and as hepassed over a degree of latitude,the pole star would settle onedegree towards the horizon,…
Constellations · Stars
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