INDEX.
- Acceleration of moment of momentum, 377
- Aldebaran, 27, 28
- Anderson, Dr., 356
- Andromeda, Great Nebula in, 43, 204
- Antinous, Cluster of stars in, 353
- Apteryx, Rudimentary wing-bones of, 364, 366
- ——, Skeleton of, 364, 366
- ——, The, 363, 365
- Arcturus, Spectrum of, 85
- Argon, 265
- Argus and surrounding stars, 103
- Ariel, 338
- Boring, The great, 123
- Brooks’ comet, 89
- Bunsen burner, The, 283
- Butterfly and the oak-tree, The, 15
- Calcium, 274
- Capella, Spectrum of, 61–64
- Carbon, 280
- Ceres, 311
- Change of moment of momentum, 375
- Cluster, Nebulous region round a, 33
- Clusters of stars, 53–60, 203
- —— —— of 17th magnitude, 353
- Coal-unit, 110
- Collisions, 219, 380
- ——, Cause of formation of nebulæ, 356
- Comets, 37
- Comet, Brooks’, 89
- —— of 1882, 119
- ——, Spectrum of, 290
- Common, Dr. A. A., 44
- Concord, The first, 294–307
- ——, The second, 308–323
- ——, The third, 324–336
- Conglomerates, 159
- Conservation of moment of momentum, 374
- Corona of the sun, 117
- Crab nebula, The, 19, 44
- Crossley Reflector, The, 45, 46, 48, 49, 50, 67, 199
- Cygnus, Nebula in, 329
- Dark bodies in universe, 355
- Darwin, Professor G. H., 153, 254, 332
- Darwinian theory, 10, 268, 362
- Dewar, Professor, 144, 272
- Diurnal motion, The, 21
- Dumb-bell nebula, 43, 44, 45, 46, 50, 74, 195
- Dust from Krakatoa, 185
- Earth, Heat in interior of, 134, 367
- ——, ——, Cause of, 153
- ——, History of, 122–157, 251
- ——, Rigidity of, 162
- Earth-moon system, 253, 332
- Earthquakes, 158–190
- —— in England, 175
- ——, Routes of, 171
- Emission of sun heat, 373
- Energy between two attracting masses, 370
- —— given out in contraction of nebula, 370
- —— of a system, 216, 235
- Equivalent of heat, 88
- Eros, 312
- Evaluation of sun heat given out in contraction, 371
- Everett, Professor, 149
- Fire-mist, The, 268
- “Flash” spectrum, 70
- Foot-pound, 91
- Foraminifera, 367
- Friction and tides, 381
- Gas in rarefaction, 118
- H and K lines, 70, 276
- Heat, Cause of, 153
- ——, Equivalent of, 88
- —— given out in contraction of nebula, 369
- —— in interior of the earth, 134, 367
- ——, Unit of, 80, 89
- Helium, 277
- Helmholtz, 86, 96, 100
- Hercules, Star-cluster in, 52, 53, 56, 57, 59
- Herschel, Sir William, 4, 11, 72, 73, 74
- Huggins, Sir W., 60, 61, 63, 65
- Huxley, Professor, and Darwinian theory, 362
- Huyssen, Captain, 127
- Hydrogen in spectrum of Nova Persei, 358
- “Inflammation” and nebular theory, 361
- Joule’s equivalent of heat, 88
- Jupiter, 23, 25, 26, 29, 208, 237, 310, 327
- K and H lines, 70, 276
- Kant, Immanuel, 4, 5, 72, 73, 74, 327
- Keeler, Professor, 45–48, 67, 73, 199, 200, 202, 245
- Kelvin, Lord, 153, 162
- Krakatoa, 176–189
- Langley, Professor, 78
- Laplace, 4, 72, 73, 74, 206
- Lassell, Mr., 338, 340
- Lick Observatory, 41, 43, 44, 45
- Lockyer, Sir Norman, 277
- Lyra, Ring nebula in, 249
- Mars, 25, 26, 27, 28, 29, 311, 341, 349
- ——, Satellites of, 341
- Mécanique Céleste, 5, 8
- Mercury, 23, 25, 26, 29, 208
- Meteors, 37
- Milky Way, 205, 206, 214, 220
- Milne, Professor, 165
- Moment of momentum, 222, 226, 240, 352
- —— ——, Acceleration of, 377
- —— ——, Change of, 375
- —— ——, Conservation of, 374
- Momentum, Moment of, 222, 220, 240, 352
- Monoceros, Nebulous region round a cluster in, 33
- Moon, Origin of, 254
- ——, Surface of, 255
- Nautilus, The, 367
- Nebula, Contraction of, Heat given out in, 369
- ——, ——, Energy given out in, 370
- —— in Orion, The great, 40, 41, 42, 44, 46, 50, 74, 195, 242
- —— ——, ——, Spectrum of, 63, 64, 65
- ——, The great spiral, 192, 193
- Nebulæ, 40, 41, 43, 45, 47, 50, 57, 58, 66, 67, 71, 73, 105, 120, 157, 191–206, 242, 247, 249, 256, 257, 258, 259, 296, 329, 345, 348–360
- ——, Development of, 242
- ——, Discovery of, 11
- ——, Number of, 67, 200
- Nebular anecdote, 362
- —— Theory, The, 2, 3, 72, 74, 157, 205, 266, 292, 307, 323, 328, 331, 337–347, 362, 368
- Nebulosity, Faint diffused, in Perseus, 17
- Neptune, 37
- ——, Satellites of, 330, 340
- Newcomb, Professor, 238
- Norway, Conglomerates in, 159
- Nova Persei, 358
- —— ——, Spectrum of, 358, 359, 360
- Oak-tree and the butterfly, The, 15
- Oberon, 338
- Orbits of the planets, 208
- Orion, 22
- Orion, Great nebula in, 40, 41, 42, 44, 46, 50, 74, 195, 242
- ——, Spectrum of, 63, 64, 65
- Pegasus, Nebula in, 47, 345
- Perseus, A faint diffused nebulosity in, 17
- ——, New star in, 356
- Photosphere, The, 69
- Pickering, Professor, 358
- “Plane, Principal,” The, 225, 352, 379
- Planetary system, The, 37, 208
- Planets, 22, 26, 28
- ——, Movement of, 35, 311
- ——, Orbits of, 208, 298
- ——, Rotation of, on their axes, 325
- Platinum, 263
- Pleiades, 22
- ——, Nebulae in, 71
- Potassium, 272
- “Plane, Principal” The, 225, 352, 379
- Probabilities, Theory of, 305
- Radiation of sun’s heat, 82
- Ramsay, Professor, 278
- Ray nebulæ, 201, 211
- Rigidity of the earth, 162
- Ring nebula in Lyra, The, 249
- Roberts, Dr. Isaac, 198
- Rosse, Lord, 57, 196–201
- Rowland, Prof. Henry, 273
- Sagittarius, Nebula in, 105
- Satellites, 37, 209
- Saturn, 25, 26, 29, 220, 233
- ——, Dweller in, and the Sirian, 14
- ——, Ring of, 210, 220, 231, 232, 233, 234
- Scheiner, Professor, 202, 204
- Seismometer, The, 165
- Sirian, The, and the dweller in Saturn, 14
- Sirius, 215, 216
- Smiths, The parable of the, 303
- Solar system, 36, 207
- ——, Energy of, 350
- ——, Evolution of, 20, 246–260, 349
- ——, Origin of, 351
- Solar system, Scale of, 29, 30, 31
- Spectra, Continuous, 68, 203
- ——, Discontinuous, 68
- Spectroscope, The, 60, 271
- Spiral form in Nature, 256, 257
- Spiral nebula, The great, 192, 193, 247
- Spiral nebulæ, 191–206, 211, 212, 213, 220, 243, 247, 256, 257, 258, 259, 296, 345
- Star-clusters, 53–60
- Star, Spectrum of, 64
- Stars distinguished from planets, 28, 29
- Stoney, Dr. G. Johnstone, 279
- Sun compared with the planets, 26, 29
- ——, Corona of, 117
- ——, Contraction of, 99, 373
- ——, Density of, 102, 115
- ——, Heat of, 75–94, 95–111, 371, 372, 373
- ——, History of, 112–121, 251
- ——, Nebulous part of, 121
- ——, Spectrum of, 61, 62, 69, 70, 85, 273
- ——, Surface of, 278
- ——, Velocity of, 354
- ——, Weight of, 101
- Sun heat, given out in contraction, Evaluation of, 371, 372
- ——, Present emission of, 373
- Sunsets, The Krakatoa, 189
- Système du Monde, 8
- Thermometer for testing the heat of the earth’s interior, 129
- Thomson, Prof. J. J., 316
- Tides and friction, 381
- Titania, 338
- Umbriel, 338
- Unit of heat, 80, 89
- Uranus, 37, 238, 239
- ——, Satellites of, 238, 338
- Venus, 23, 25, 26, 29, 208, 325
- Volcanoes, 158–190
- Voltaire, Fable of, 14
- Waves caused by Krakatoa earth quake, 179, 182, 183