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 225
ra, till at length she comes in contact with theumbra, and the real eclipse begins. 455. In order to measure and record the extent of eclipses,the apparent diameters of the Sun and Moon are divided intotwelve equal parts, called digits; and in predicting eclipses,astronomers usually state which…
Constellations · Stars
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