Flammarion, Camille, 1842-1925, Welby, Frances A. (Frances Alice) tr · New York, D. Appleton and company · leaf 136
scovered in theseventeenth cen-tury by Galileo,which recallthose of theMoon. They aredue to the mo-tions of theplanet round theSun, and are invisible to the unaided eye, but with evena small instrument, one can follow the gradations andstudy Mercury under every aspect. Sometimes, again^he passes… … Fig. 34.—Mercury near quadrature. ASTRONOMY FOR AMATEURS will recur on November 12, 1907, and November 6, 1914. Mercury is the least of all the v^orlds in our system(v^ith the exception of the cosmic fragments that circulatebetween the orbit of Mars and that of Jupiter). Hisvolume equals only j^-q…
Astronomy
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