Astronomy in a nutshell, the chief facts and principles explained in popular language for the general reader and for schools (1912)
Serviss, Garrett Putman, 1851-1929, Rouben Mamoulian Collection (Library of Congress) DLC · New York, London, G.P. Putnam's sons · leaf 74
Saturn From a drawing by Trouvelot. … Saturn Photographed at the Lick Observatory. Astronomical ClocK and Ecliptic 47 the heavens, called the equinoctial colure.The hour circle at right angles to the equi-noctial colure, i. e., bearing to it the samerelation that the prime vertical does tothe meridian (see Sect. 4), is called the…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
