Electro astronomical atlas ... with explanatory notes, questions and answers (1874)
Spoor, J. W. (Joseph W.) · Albany, N.Y., Weed, Parsons and Company · leaf 95
aninterval of two honrs. These changesin the brightness of the disc areowing, it is supposed, to the varia-tions of the clouds of vapor in itsatmosphere. No mountains have yet been dis-covered. In the region of the polesare brilliant white spots, which aresupposed, by some, to be masses ofSnow.… … HOURS INTERYAL. (WARREST DE LA RUE.) Q. What small planets lie between Mars andJupiter %A. They are the Minor Planets. LESSON XXXV. Analysis.— The Minor Planets — What are they ? — Number — Space occupied — Keplers impression — Not witnessed in his Day —Two Hundred Years after — Discovery Made —…
Astronomy
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