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 196
ince they behave just as wouldbe expected if such were the case. The northern one dwin-dles away during the northern summer, when the north pole isturned towards the sun, while the southern one grows rapidlylarger; and vice versa during the southern summer. Second, patches of bluish gray or… … Fig. 53. — Telescopic Views of Mars. yellow, covering nearly five-eighths of the surface, and inter-preted as land. These markings, of course, are best seen when near thecentre of the planets disc; near the limb they are lost in thebrilliant light which there prevails, and at the terminator…
Astronomy
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