Lessons in astronomy including uranography. A brief intoductory course without mathematics (1896)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston, London, Ginn and company · leaf 117
raters to terrestrial vol-canoes makes it naturalto assume that they havea similar origin. This,however, is not quite certain, for there are considerable difficulties inthe way of the volcanic theory, especially in the case of what arecalled the great Bulwark Plains, so extensive that a person… … Fig. 22.— Gassendi (Nasmyth). §153] OTHER LUNAR FORMATIONS. 107 on the earth, volcanoes necessarily require the action of air and water,which do not now exist on the moon; so that if these lunar cratersare really the result of volcanic eruptions, they must be ancient forma-tions, for there is…
Astronomy
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