Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 416
oi Fig. 453- the moon. It is shown inFig. 453. The smallercloud is called the Nu-becula Minor. It hasonly about a fourth theextent of the larger cloud,and is considerably lessbrilliant. It is visible tothe naked eye, but it dis-appears in full moonlight.This cloud is shown inFig. 454. The… … 390 ASTRONOMY. 385. Structure of the Nubecula. — Fig. 455 shows thestructure of these clouds as revealed by a powerful tele-scope. The general ground of both consists of large tractsand patches of nebulosity in every stage of resolution, —from that which is irresolvable with eighteen inches…
Astronomy
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