[Roman figures refer to the chapters, Arabic to the articles.]
Funds of eccentricity, inclination, xi. 245
Galactic circle, xii. 258, 260
Galaxy. See Milky Way
Gauges, gauging. See Star-gauging
Georgium Sidus. See Uranus
Gravitation, gravity, ii. 38 n; vii. 150; viii. 158, 161; IX. passim; x. 196, 201, 213, 215, 219, 220, 223, 226; XI. passim; xii. 264; xiii. 282, 284, 286–293, 309, 319
Gravitational astronomy, x. 196; xiii. 272, 273, 286
Gravity, variation of, viii. 161; ix. 180; x. 199, 217, 221, 223; xi. 231
Great circle, i. 11; ii. 33, 42; iv. 82, 84
Gregorian Calendar. See Calendar, Gregorian
Grindstone theory, xii. 258; xiii. 317
Halleys comet, vii. 146; x. 200, 205; xi. 231, 232; xiii. 291, 307
Harmonics (of Smith), xii. 251
Harmony of the World ( Kepler), vii. l44
Helium, xiii. 301
Herschelian telescope, xii. 255, 256
Historia Coelestis (of Flamsteed), x. 198
Holy Office. See Inquisition
Horizon, i. 3, 9; ii. 29, 33, 35, 39, 46; viii. 161; xiii. 285
Horoscopes, v. 99
Hour, i. 16
Hydrostatic balance, vi. 115 n
Hyperion, xiii. 295
Ilkhanic Tables, iii. 62
Il Saggiatore (of Galilei), vi. 127
Inclination, iii. 58; iv. 89; xi. 228, 244, 245, 246, 250; xiii. 294, 318
Inclination fund, xi. 245
Index of Prohibited Books, vi. 126, 132; vii. 145
Indians, Indian astronomy, i. 6; iii. 56, 64
Induction, complete, ix. 195
Inequalities, long, xi. 243
Inequalities, periodic, xi. 242, 243, 245, 247
Inequalities, secular, xi. 242, 243–247; xiii. 282. See also Perturbations
Inequality, parallactic, xiii. 282
Inferior planets, i. 15; iv. 87, 88. See also Mercury, Venus
Inquisition (Holy Office), vi. 126, 132, 133
Institute of France, xi. 241
Inverse deductive method, ix. 195
Inverse square, law of, ix. 172–176, 181, 195; xi. 233. See also Gravitation
Ionian school, ii. 23
Iris, xiii. 281
Irradiation, vi. 129
Island universe theory, xii. 260; xiii. 317
Japetus, viii. 160; xii. 267; xiii. 297
Julian Calendar. See Calendar, Julian
Juno, xiii. 294
Jupiter, i. 14–16; ii. 25, 51; iv. 81, 87, 88; v. 98, 99; vi. 121, 127; vii. 136 n, 142, 144, 145, 150; viii. 154, 156, 162; ix. 172, 181, 183, 185–187; x. 204, 216; xi. 228, 231, 235, 236, 243–245, 248; xii. 267; xiii. 281, 288, 294, 297, 305. See also the following headings
Jupiter, belts of, xii. 267
