The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 159
fromcracks in the surface, which are deposited as snow or hoarfrost in the lunar night and evaporated in the lunar day;or that vegetation of a low order springs up, runs the cycleof its life history in each lunar day and perishes in the cold oflunar night. My conclusion is that we have still much… … Fig. 1—The Diffuse Nel)ulositv, Messier 8. in Saoittarius.
Astronomy
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