426 



General Index 



[Roman figures refer to the chapters, Arabic to the articles J\ 



Arabs, Arab astronomy, n. 46, 53; 



HI. 56-61, 64, 66, 68; v. no; 



viii. 159; xn. 266 

 Arctic regions, n. 35 

 Arcturus, xn. 258 

 Aries, first point of ( r ), i. 13 ; 



ii. 33, 42; iv. 83 ; v. 98, 



in ; x. 198 



Asteroids. See Minor planets 

 Astrolabe, n. 49; in. 66 

 Astrology, i. 16, 18; in. 56; v. 



99, 100 ; vii. 136, 149, 151 

 Astronomiae Fundamenta (of 



Lacaille), x. 224 

 Astronomiae Instauratae Mecha- 



nica (of Tycho), v. 107 

 Astronomiae Instauratae Progvm- 



nasmata (of Tycho), v. 104 

 Astronomical Society, German, 



xin. 280 

 Astronomical Society, Royal, xn. 



256, 263 

 Astronomicum Caesareum (of 



Apian), v. 97 



Astronomisches Jahrbuch t xn. 253 

 Astronomy, divisions of, xin. 272 

 Astronomy, descriptive, xin. 272, 



273. 294 

 Astronomy, gravitational, x. 196 ; 



xin. 272, 273, 286 

 Astronomy, observational, xin. 



272, 273 



Astronomy, origin of, i. 2 

 Astronomy, scope of, i. i 

 Attraction. See Gravitation 

 Autumnal equinox, i. ii. See 



also Equinox 



Axioms. See Laws of Motion 

 Axis (of an ellipse), xi. 236, 244, 



245 



Babylonians. See Chaldaeans 

 Bagdad, HI. 56, 57, 60, 68 

 Btlts of Jupiter, xn. 267 

 Betelgeux, in. 64 

 Biela's comet, xin. 305 

 Binary stars. See Stars, double 

 and multiple 



Bode's Astronomisches Jahrbuch, 



xii. 253 



Bodily tides, xin. 292, 293 

 Brightness of stars. See Stars, 



brightness of 

 Brooks's comet, xin. 305 

 Brucia, xin. 294 

 Bureau des Longitudes, xi. 238., 



Cairo, in. 60 



Calculus of Variations, xi. 237 n 



Calendar, Greek, ii. 19, 20, 21 



Calendar, Gregorian, n. 22 ; IX. 

 165 n ; x. 217 



Calendar, Julian, n. 21, 22 ; 111. 

 68; iv. 73; ix. 165 n ; x. 

 197 , 217 



Calendar, Mahometan, in. 56 



Calendar, Roman, n. 21 



Caliphs, in. 56, 57, 69 



Canals of Mars, xin. 297 



Cartesianism, vin. 163 ; ix. 191, 

 195 ; xi. 229 



Castor, xii. 263, 264, 266 



Catalogues of stars. See Star- 

 catalogues 



Cavendish experiment, x. 219 



Celestial latitude. See Latitude, 

 celestial 



Celestial longitude. See Longi- 

 tude, celestial 



Celestial sphere, i. 7, 8, 9-11, 13, 

 14 ; n. 24, 26, 33, 38-40, 45, 47, 

 51 ; m. 64, 67; iv. 78, 80, 83, 

 88; v. 98, 105; vi. 129; vni. 

 157; x. 198, 207, 208, 214; xn. 

 257; xin. 272 



Celestial sphere, daily motion of. 

 See Daily motion 



Celestial spheres, n. 23, 26, 27, 38, 

 51, 54; in. 62, 68; v. 100, 103 



Centre of gravity, ix. 1 86 



Centrifugal force, vin. 158 



Ceres, xin. 276, 294 



Chaldaeans (Babylonians), Chal- 

 dacan astronomy, i. 6, 1 1, 12, 

 16-18; ii. 30, 34, 40, 51, 54; 

 in. 56 



