The geography of the heavens : and class-book of astronomy : accompanied by a celestial atlas (1860)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868 · New York : Mason Brothers · leaf 222
445. The time which elapses between two successive changesof the Moon is called a Lunation, which, at a mean rate, is about 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…
Constellations · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
