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 221
If seven? What is the usual number? Can you explain the cause of this variety?444. What is the direction of a solar eclipse? A lunar? Why this difference? 445.What is a lunation ? What would be the effect if the solar and lunar months wereequal ? What result from the existing inequality? B.G. 10…
Constellations · Stars
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