Part 4 — INDEX
Reading edition
Aberration, 88
Alpha Centauri, 145
Alpha Draconis, 62
Altitude, 13, 14
Andromeda, nebula in, 236
Antares, 24
Aphelion, 8
April, aspect of sky in, 251
Arcturus, 224
Asteroids, the, 187
Atmosphere, the, 82
August, aspect of sky in, 253
Azimuth, 13, 14
Beta Aurigæ, 230
Binary (and multiple) stars, 226
Binaries, spectroscopic, 227
Calendar, the, 117
Calorie, measure of sun's heat, 129
Cassiopeia, 22
Cheops, pyramid of, 62
Chromosphere, of sun, 135
Circles, vertical, 15; altitude, 14; division of, 16
Circumpolar stars, 224
Clock, the astronomical, 41, 90
Comets, 201, 203
Constellations, the, 241
Corona, of the sun, 135
260Coronium, 152
Corona Borealis, 24
Day, change of, 99, 101
Day and night, 96
December, aspect of sky in, 256
Declination, 31, 35
Dipper, the Great, 21; the Little, 23
Earth, description of the, 67; weight of, 73
Eclipses, 163
Ecliptic, 43
Elements, chemical, in the sun, 151
Equator, 38
Equinoxes, 45
Eros, the asteroid, 142
February, aspect of sky in, 249
Galaxy, the, 233
Gravitation, laws of, 70
“Greenwich of the Sky,” 32
Heavens, apparent motion of, 19
Helium, 152
Horizon, 10, 12; dip of, 86
Hour Circles, 31
261January, aspect of sky in, 248
July, aspect of sky in, 252
June, aspect of sky in, 252
Jupiter, the planet, 189
Kepler, laws of, 173
Latitude, terrestrial, 30; celestial, 49, 51
Light, pressure of, 206
Longitude, terrestrial, 30; celestial, 49, 51
Magnitudes, stellar, 220
March, aspect of sky in, 250
Mars, the planet, 181
May, aspect of sky in, 251
Mercury, the planet, 175
Meteors, 210
Meteorites, 214
Milky Way, the, 233
Molecules, escape from planetary atmospheres, 158
Moon, description of, 153; how earth controls, 75
Motion, proper, of solar system, 232
Nadir, 11
Nebulæ, 236
Nebular Hypothesis, 239
Neptune, the planet, 199
Noon-line, 12
North Point, 20
North Pole, 27, 37
North Star, 20, 27, 61
November, aspect of sky in, 255
Nutation, 63
Oblique sphere, 39
October, aspect of sky in, 254
Oppositions, of Mars, 183
262Orbits of planets, 7, 52
Orion, nebula in, 236
Parallax, 136, 139
Parallel sphere, 38
Perihelion, 8
Phases of the moon, 160
Photography, in astronomy, 240
Photometry, of stars, 220
Photosphere of sun, 134
Planets, description of the, 172
Polar circles, 111
Precession of the Equinoxes, 55
Refraction, 83, 85
Right Ascension, 31, 35
Right sphere, 39
Rotation, effect of earth's, 5
Saturn, description of, 195
Seasons, the, 104, 107; secular change of, 115
September, aspect of sky in, 254
Signs of Zodiac, 54
Spectroscopic analysis, 145, 147; shifting of lines, 227
Sphere, celestial, 9
Solstices, the, 47
Stars, the fixed, 219; daily revolution of, 25; how to locate, 29; luminosity of, 222; spectra of, 221; variable, 225; temporary, 235; double and multiple, 226
Sun, the description of, 127
Sun-spots, 131
Temperature, of sun, 130
Temporary stars, 235
Tides, the, 76, 79
263Time, 89; sidereal and solar, 93
Transits, of Venus, 140, 141
Tropics, the, 111
Universe, appearance of, 8
Uranus, description of, 199
Ursa Major, 21
Variable stars, 225
Vega, 63
Venus, the planet, 178
Vernal Equinox, 32, 42, 46
Zenith, 10
Zodiac, 50
Transcriber’s Notes: New original cover art included with this eBook is granted to the public domain. Missing or obscured punctuation was silently corrected. Typographical errors were silently corrected. Inconsistent spelling and hyphenation were made consistent only when a predominant form was found in this book.