Astronomy with an opera-glass: a popular introduction to the study of the starry heavens with the simplest of optical instruments, with maps and directions to facilitate the recognition of the constellations and the principal stars visible to the naked eye; (1888)
Serviss, Garrett Putman, 1851-1929 · New York, London, D. Appleton and company · leaf 154
ss upon Mars, and at oncesaw a star in the expected position, which I knew was Ura-nus. But there were other small stars in the field, and, sup-posing I had not been certain which was Uranus, how could Ihave recognized it % The answer is plain : simply by watchingfor a night or two to see which…
Astronomy
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