Licence: Public Domain Mark
Credit: A short history of astronomy / by Arthur Berry. Source: Wellcome Collection.
Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.
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![[Roman figures refer to the chapters Arabic to the articles.] Saros, i. 17 ; n. 43 Satellites, vi. 121, 127, 129, 133 ; vii. 145, 150; viii. 154, 160, 162; ix. 170, 183-185; x. 210, 216; xi. 228, 248; xii. 253, 255, 267; xm. 272, 283, 295, 296, 297, 318, 320. See also Jupiter, Saturn, etc., satellites of Satellites, direction of revolution of, xi. 250; xm. 295, 318 Satellites, rotation of, xi. 250; xii. 267 ; xin. 297 Saturn, 1. 14-16; 11. 25, 51; iv. 81, 87; v. 99; vi. 123; VII. 1367*, 142, 144; viii. 154, 156; ix. 183, 185, 186; x. 204; XI. 228, 231, 235, 236, 243-246; xii. 253, 267; xm. 288, 297. See also the following headings Saturn, mass of, ix. 185 Saturn, rings of, vi. 123; viii. 154, 160; xi. 228, 248 ; xn. 267; xm. 295, 297 Saturn, rotation of, xn. 267 ; xm. 297 Saturn, satellites of, vm. 154, 160 ; ix. 184 ; xi. 228 ; xn. 253, 255, 267 ; xm. 295, 297, 307 Scientific method, 11. 54 ; vi. 134 ; ix. 195 Seas (on the moon), vi. 119; vm. 153; xm. 296 Seasons, 1. 3; 11. 35, 39; iv. 82; xi. 245 Second (angle), 1. 7 Secular acceleration of the moon's mean motion, x. 201 ; xi. 233, 234, 240, 242 ; xm. 287 Secular inequalities. See In- equalities, secular Sclenographia (of Hevel), vm. 153 Selenotopographische Fragmente (of Schroeter), xn. 271 Sequences, method of, xn. 266 Shadow of earth, moon. See Eclipses Shining-fluid theory, xn. 260; xm. 310, 311 Shooting stars. See Meteors Short-period comets, xm. 291 Sidereal month, 11. 40 Sidereal period, iv. 86, 87 Sidereal system, structure of, xn. 257, 258, 259-262; xm. 317 Sidereal year, 11. 42 Sidereus Nuncius (of Galilei), vi. 119-122 Sights,' v. no; vm. 155 x. 198 Signs of the zodiac, 1. 13 Sine, 11. 47 11; in. 59 n, 68 n Sirius, xm. 316 n Solar eclipse. See Eclipse Solar system, stability of, xi. 245 ; xm. 288, 293 Solstices, 1. 11; 11. 36, 39, 42 Solstitial points, 1. 11 Space-penetrating power, xn. 258 Spanish astronomy, m. 61, 66 Spectroscope, xm. 299. See also Spectrum analysis Spectrum, spectrum analysis, ix. 168; xm. 273, 299-302, 303, 304, 306, 309, 311-314, 317, 318 Sphacra Mundi (of Sacrobosco), in. 67 Sphere, attraction of, ix. 173, 182; xi. 228 Sphere, celestial. See Celestial sphere Sphere, doctrine of the. See Spherics Spheres, celestial, crystal. See Celestial spheres Spheres, music of the, 11. 23; vn. 144 Spherical form of the earth, moon. See Earth, Moon, shape of Spherics, 11. 33, 34 Spica, 11. 42 Spiral nebulae, xm. 310 Stability of the solar system, xi. 245 ; xm. 288, 293](https://iiif.wellcomecollection.org/image/b21033870_0528.jp2/full/800%2C/0/default.jpg)