Meteorites, difference from meteors, 296-297
constituent elements of, 299
composition of meteorites, 348-352
Ovifak and Coon Butte "irons," 349-352
not cometary, 307
Tschermak's volcanic doctrine, 307, 310
Lockyer and Prof. Newton's theory, 308
origin of meteorites, 308-309
meteorites volcanic ejects, 310
whence, 311-355
objections considered, the atmosphere, 341, 345
career of a meteorite, 345, 347
recapitulation of argument, 353-355
Milky Way, the, in remote antiquity, 20
Million years ago, the star-groups of a, 12, 15-18, 20
Mizar, the system of (see Great Bear).
Molecules (see Gases).
Moon, the, of the coal measures, 18
conditions of life on the, 45-48
compared with Mars, 121
absence of atmosphere, 126, 131
Mott, Mr. A., his theory of lunar atmosphere, 128
N
the Crab, 38
spectrum of a nebula, 155
old theory of nebulæ, 155
the new theory, 157
the problem of the Great Nebula in Andromeda, 158-159
the Great Nebula in Orion, 162, 214
the story of the Nebula in Taurus, 214-215
process of nebular condensation, 38
Nebula, permanent appearance of nebulæ, 217
Nebular Hypothesis, Laplace, 212,217-219
Herschel, 212-217
argument from the planets, 220-222, 225
argument from the comets, 222-224
argument from the sun, 226-229
argument from the earth, 228
Neptune, conditions of life on, 48-49
discovery of, 148
Newcomb, Prof., our sidereal system, 210-212, 217, 219
on comets and meteorites, 308
Newton and the movements of the Pole, 67
O
the Great Nebula in, 162, 214, 236
Theta Orionis and its relation to the nebula, 236-239
Ovifak "meteoric iron" of terrestrial origin, 349-352
P
Photography, proof of earth's rotation, 55
application to astronomy, 168
chart of the heavens, 167
photo-measurements of annual parallax, 167
Pickering, Prof., his study of Mizar, 192-193
Planets, the, in the carboniferous era, 19
through the telescope, 40
clouds and oceans of, 41
comparative sizes of, 41
conditions of life on, 44-45
favourable times for observation, 106-107
the law of gravitation, 198
