des Brosses, 5 Diaz, Bartholomew, 176 Dipper, 32, 34 Donati, 187 Double star, stellar dial of, 86 Double stars, 68, 70 Dragon, 36 du Châtelet, Marquise, 4 E Eagle, 41 Earth, 205 ancient notions of, 19 distance from the sun, 215 how sustained, 21 inclination, 224 in space, 20 motion of, round the Sun, 222 movement of, 217 rotundity of, 206 viewed from Mars, 144 viewed from Mercury, 119 viewed from Venus, 130 weight, 210 Eclipse of Sun, May, 1900, 273 Eclipses, 259 Ellicot, Andrew, 195 Entretiens sur la Pluralité des mondes, 9 Equator, 225 Eudoxus, 31 Evening Star, 123 F Faculæ, 98, 100 Fire-balls, 198 Flammarion's Lunar Ring, 253 Fleming, Mrs., 7 Fontenelle, 9 Foucault, 219 G Galileo, 95, 98, 125, 244 Galle, 168 Globe, divisions of, 226 Great Bear, 32, 34, 35 Great Dog, 50 Grecian Calendar, 229 Greek alphabet, 33 H Hall, Mr., 143 Halley, 181 Halley's Comet, 3, 175 Heavens, map of, 61 Hercules, 41, 66, 79 Herdsman, 39 Herschel, Caroline, 6 Hevelius, 246 Hipparchus, 31 Houses of the Sun, 43 Huggins, Lady, 8 Huyghens, 49 Hyades, 44 Hypatia, 3 J Janssen, 102 Jupiter, 148 satellites, 155 telescopic aspect of, 150 K Klumpke, Miss, 7 Kovalevsky, Sophie, 6 L Lacaille, 292 Lalande, 3, 9, 65, 292 Latitudes, 226 Leonids, 195 Lepaute, Madame Hortense, 3, 4 Le Verrier, 167 Little Bear, 35 Little Dog, 50 Lockyer, 102 Longitudes, 226 Lucifer, 122 Lunar Apennines, 251 landscape, 254 topography, 252 Lyre, 40 M Mars, 131 chart of, 140 Measurement, 289 Medes and Lydians, 266 Mercury, 114 Meteorites, 201 Meteors, 190, 191 Metonic Cycle, 271 Milky Way, 78, 87 Mira Ceti, 77 Mitchell, Maria, 7 Mizar, 34, 69 Moon, 232 diameter of, 242 distance of, 292 geological features of, 245 map of, 247 mountains of, 246 phases of, 241 photograph of, 240 revolution of, 234 rotation of, 242 size of, 242 temperature of, 250 total eclipse of, 263 N Nebula, in Andromeda, 81 in Orion, 81 in the Greyhounds, 82 Neptune, 65, 166 revolution of, 169 Newton, 181 Nucleus, 95, 185 O Orion, 48, 49, 81 P Parallax, 292, 293 annual, 306 Pearl, 40 Pegasus, 38 Penumbra, 96 Periodic Comet, orbit of, 182 Perseids, 195 Perseus, 38, 70, 78 Phenician navigators, 30 Phoebus, 67 Photosphere, 101 Piazzi, 147 Planets, 109, 113, 146 distances, 110, 302 orbits of, 115 orbits of, 116 Pleiades, 38, 39, 44, 83 occultation of, 85 Pleione, 84 Polaris, 63 Pole-star, 34, 63 Poles, 225 Pollux, 44 Pope Calixtus, 176 Prodigies in the heavens, 178 Ptolemy, 31, 217 R Radiant, 195 Riccioli, 246 Rigel, 49, 70