3 68 



INDEX. 



Extent of starry heavens, 255, 304 

 range of telescope, 256-258 

 distances, 260 



FALLING stars, fire-balls (see Me- 

 teors) 



G 



GALILEO, view of Venus, 141 



Georgium Sidus, 201 



Great spiral nebula, 140 



Green, N. E., drawings of Mars, 



159, 161, 162 

 Gulliver's Travels, 41, 179 



HALL, Prof. Asaph, discovery of 



moons of Mars, 168-172 

 Heavens, chart of, 311, 312 

 Herring, 357, 358 

 Herschel, Sir W., as an observer, 

 54 



and Saturn's rings, 121 

 Huggins, Sir William, discoveries 

 in nebula of Orion, 134, 136 

 work in spectrum analysis, 

 262 



INFINITESIMAL calculus, 362, 363 



JANSSEN'S photographs of the sun, 



295 

 Jupiter, orbit, 180, 181 



rotation, 182 



belts, 184 



phases, 185 



solidity of, doubtful, 185, 187 



great red spot in, 186, 187 



bulk of, 188 



mass, 188, 189 



internal heat, 189 



clouds, 190, 191, 194 



solar heat on, 191-193 



photograph of, 298 



K 



KNOBEL, observation of Mars, 164 

 Krakatoa, the eruption, 319-342 



investigation by the Royal 

 Society, 320 



description of locality, 321 



previous eruptions, 321 



warnings, 322 



the catastrophe, 323, 324 



compared with other eruptions. 

 *! 325 



the great air wave, 326-329 

 its rate of motion, 330 



area of the sound, 331-334 



great sea-waves, 334 



sky phenomena, 335 



dust clouds, 336-338 



after-glow, 339-341 



LEONIDS, 238, 242 



Lick Observatory, 103-106 



the great refractor, 105 

 Light and colour rays, 277 



of 18,000 years ago, 260 



M 



MAGNETIC needle and sunbeams I 

 Mars, discovery of satellites of, 75 r 



76, 151, 168-172 

 and Venus, 141 

 rotation of, 144, 153, 154 

 revolution and orbit, 151, 157, 



158 



position in solar system, 150 

 and the earth, 152, 156 

 atmosphere of, 162 

 through the telescope, 153, 16* 

 clouds on, 163 

 in opposition, 154-156 

 colours of surface, 163 

 south pole, pictures of, 1 59 

 white polar regions, 162 

 Mr. N. E. Green's drawings, 



159, 161, 162 

 mapping of, 160 

 zero of longitudes, 161 

 Knobel's observations, 164 

 Schiaparelli's " canalb, " 166- 



167 

 Swift's guesses, 179 



