The geography of the heavens, and class-book of astronomy: (1858)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 220
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.…
Constellations · Stars
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