Swift's comet, 214, 224 T Taygeta, 256 Telescope, invention of, 1, 2; refracting, 3; achromatic, 5; reflecting, 10, 11; forms of reflecting, Newtonian, Gregorian, Herschelian, Cassegrain, 10, 11; mirrors of reflecting, 11, 12; finders, 23, 24; mountings of, Altazimuth, 25-28; equatorial, 30, 31; house for, 37, 38; management of, 39, 40; powers of, 40, 41 Tempel's comet, 211 Terminator of moon, 107; of Venus, 94 Titius, discovery of Bode's law, 148 Turner discovers Nova Geminorum, 255 Tycho, 114; ray-system of, 108, 120, 121; Brahé observes Nova Cassiopeiæ, 252 U Uranus, 190; distance from sun, period, diameter, visibility, 194; spectrum and density, 195; satellites, 196 Ursæ Majoris [zeta], duplicity of, 240; [xi] binary, 244; spectroscopic binary, 247 V Variable stars, 248-251 Variation in sun-spot latitude, 62 Vega, 234; colour of, 235; apex of solar path, 271 Venus, diameter, 89; orbit and elongations, 89; visibility of, 89, 90; brilliancy, 90; reflective power, 90; phases, 92; as telescopic object, 93; atmosphere, 93; blunting of south horn, 94; rotation period, 96; 'phosphorescence' of dark side, 97; question of satellite of, 97, 98; transits, 98; opportunities for observation, 98, 99 Vesta, discovery of 149; diameter of, 152; reflective power, 152 Vienna, 27-inch refractor, 8 Vogel, atmosphere of Mars, 140; discovery of spectroscopic binaries, 245, 246 W Washington, 26-inch refractor, 8 Watson, asteroid discoveries, 151, 153 Webb, Rev. J. W., remarks on telescope, 17; on amateurs, 18; on cleaning of eye pieces, 20; visibility of Saturn's rings, 181; lunar chart, 124; 'Celestial Objects,' 124; colouring of Jupiter, 158; description of planetary nebula in Draco, 267 Williams, A. Stanley, seasonal variations in colour of Jupiter's belts, 159; periods of rotation (Jupiter), 163; rotation of Saturn, 174 Wells's comet, 213 Wilson, theory of sun-spots, 60, 61 Winnecke's comet, 211 Wolf, asteroid discoveries, 151 Y Yerkes observatory, 40-inch refractor, 8, 9; 5-foot reflector, 12 Young, illustrations from 'The Sun,' 48; electric influence of sun on earth, 63; observations of prominences, 74; of reversing layer, 74 Z Zöllner, reflective power of Jupiter, 156 THE END BILLING AND SONS, LTD., PRINTERS, GUILDFORD. Transcriber's Note - - indicates italic print; = = indicates bold print; + + indicates Old English font; ^ or ^{} indicates a superscript. ° indicates hours (or degrees); ′ indicates minutes (prime = minutes = feet); ″ indicates seconds (double prime = seconds = inches). Sundry missing or damaged punctuation has been repaired.