P
- Palisa discovers asteroids, 151
- Pallas, discovery of, 149;
- diameter of, 152
- Peck, 'Constellations and How to Find Them,' 238;
- star-charts, 278
- Pegasi κ, short-period binary, 245
- Pegasus, 237
- Perihelion of planets, 131 (note)
- Period, synodic, of moon, 103
- Perrine discovers Jupiter's sixth and seventh satellites, 167
- Perseid, meteors, 214, 224, 225
- Perseus, sword-handle of, 257
- Petavius cleft, 119
- Peters discovers asteroids, 151
- Phillips, Rev. T. E. R., polar cap of Mars, 134;
- Phobos satellite of Mars, 143
- Phosphorescence of dark side of Venus, 97
- Photosphere, 75
- Piazzi discovers Ceres, 149
- Pickering, E. C., number of lucid stars in northern hemisphere, 233;
- parallax of Orion nebula, 262
- Pickering, W. H., on lunar ray systems, 120, 121;
- Planetary nebulæ, 266;
- Plato, 117, 126
- Pleiades, number of stars in, 233, 256, 257;
- nebula of, 257
- Pleione, 256
- Polarizing eye-piece, 66
- Pollux, 234
- Præsepe, 256
- Procellarum Oceanus, 111
- Proctor, 2;
- Proctor on the Saturnian system, 181;
- Procyon, 234
- Projecting sun's image, 67
- Projections on terminator of Mars, 141
- Prominences, 73, 74
- Ptolemäus, 112
- Pulkowa, 30-inch refractor, 8, 9
R
- Radiant point of meteors, 223, 224;
- Ranyard Cowper on parallax measures, 231
- Regulus, 234
- Reversing layer seen by Young, 74;
- Riccioli observes duplicity of ζ Ursæ Majoris, 240
- Rigel, 232, 234;
- colour of, 235
- Ritchey, 5-foot reflector Yerkes Observatory, 12
- Roche's limit, 186
- Rosse, Earl of, 6-foot reflector, 12;
- Rotation period of Mercury, 85;
S
- Satellite of Venus, question of, 97, 98;
- Saturn, orbit of, sun-heat received by, period of, diameter of, compression and density of, 172;
- Scheiner, construction of refractors, 2
- Scheiner, Julius, spectrum of Andromeda nebula, 264
- Schiaparelli, rotation of Mercury, 85;
- Schmidt, lunar map, 114;
- Schröter, observations of Venus, 94;
- Schwabe, discovery of sun-spot period, 61, 62
- See, Dr., duration of sun's light and heat, 80
- Serenitatis, Mare, serpentine ridge on, 110, 111;
- crossed by ray from Tycho, 120
- Shackleton photographs spectrum of reversing layer, 75
- Sidereal month, 103
- Siderites and siderolites, 227
- Sinus Iridum, 117
- Sirius, companion of, discovered, 8;
- Sirsalis cleft, 119
- Smyth, Admiral, on amateur observers, 18, 19, 45
- Sodium in chromosphere, 73
- Solar system, translation of, 269-272
- South, Sir James, 12-inch telescope, 6
- Spectroscope, 73, 76
- Spectroscopic observations of rotation of Venus, 96;
- Spectrum of reversing layer, 75;
- of chromosphere, 73
- Spencer, Herbert, relation of stars and nebulæ, 267
- Spica Virginis, 234
- Stars, distance of, 231;
- Struve, F. G. W., 'Mensuræ Micrometricæ,' 278
- Struve (Otto) discovers satellite of Uranus, 196;
- verifies discovery of Neptune's satellite, 201
- Sun, size, distance, 47, 48;
- Sun-spots, 49, 50;
- Synodic period, 103
- Syrtis Major, 145
- Swift, Dean, satellites of Mars, 142
- Swift's comet, 214, 224
T
- Taygeta, 256
- Telescope, invention of, 1, 2;
- 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;
U
V
- Variable stars, 248-251
- Variation in sun-spot latitude, 62
- Vega, 234;
- 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;
- Vienna, 27-inch refractor, 8
- Vogel, atmosphere of Mars, 140;
W
- Washington, 26-inch refractor, 8
- Watson, asteroid discoveries, 151, 153
- Webb, Rev. J. W., remarks on telescope, 17;
- Williams, A. Stanley, seasonal variations in colour of Jupiter's belts, 159;
- 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;
Z
- Zöllner, reflective power of Jupiter, 156
THE END
BILLING AND SONS, LTD., PRINTERS, GUILDFORD.
Transcriber's Note
° indicates hours (or degrees); ′ indicates minutes (prime = minutes = feet); ″ indicates seconds (double prime = seconds = inches).
Sundry missing or damaged punctuation has been repaired.
Illustrations (or Plates) which interrupted paragraphs have been moved to more convenient positions between paragraphs.
A few words appear in both hyphenated and unhyphenated versions. A couple have been corrected, for consistency; the others have been retained.
Page x: 'XI' corrected to 'IX'
"IX. THE ASTEROIDS 148"
Page 4: Corrected 'lengthwas' to 'length was'.
"... with a glass whose focal length was 212¼ feet."
Page 25: 'familar' corrected to 'familiar'.
"... or, to use more familiar terms,..."
Page 90: "... more especially if the object casting the shadow have a sharply defined edge,..."
'have' is correct, and has been retained (subjunctive after 'if').
Page 92: 'firstfruits' corrected to 'first-fruits'. (OED, and matches 2 other occurrences.)
"The actual proof of the existence of these phases was one of the first-fruits which Galileo gathered by means of his newly invented telescope."
Page 109: 'eyeryone' corrected to 'everyone'.
"... —'the man in the moon'—with which everyone is familiar."
Page 118: 'of' added - missing at page-turn.
"They embrace some of the loftiest lunar peaks reaching...."
Page 128: 'lnnar' corrected to 'lunar'.
"The lunar night would be lit by our own earth,..."
Page 157: 'imch' corrected to 'inch'.
Jupiter, October 9, 1891, 9.30 p.m.; 3⅞-inch, power 120."
Page 158: 'eyepiece' corrected to 'eye-piece', to match all the rest.
"... and a single lens eye-piece giving a power of 36."
Page 194: The code for the astronomical symbol for Uranus is U+26E2 or ⛢ (& # 9954;), but it does not seem to work, except, perhaps, in the very latest browsers) so an image has been used instead:
Page 205: removed extraneous 'of'.
"The nucleus is the only part of [of] a comet's structure "
Page 209: 'unconsidreed' corrected to 'unconsidered'.
"... that some unconsidered little patch of haze...."
Page 240: 'Ursae' corrected to 'Ursæ' to match entries in the Index, and for consistency.
"... though Riccioli detected the duplicity of Zeta Ursæ Majoris (Mizar), in 1650,..."
Page 248: 'in once and a half times,'. 'once' is as printed (and may have been intended).
As it is part of a quote, it has been retained.
"'Once in eleven months,' writes Miss Clerke, 'the star mounts up in about 125 days from below the ninth to near the third, or even to the second magnitude; then, after a pause of two or three weeks, drops again to its former low level in once and a half times, on an average, the duration of its rise.'"
Page 256: 'Celæno' appears here in the text; 'Celaeno, 256' is the Index entry. Both are as printed.
Page 281: 285·9″ corrected to 285·9°
"Equuleus.
Σ 2737 or ε : 20 h. 54 m. + 3° 55′ : 5·7-6·2-7·1 : 285·9°, 73·8° : 0·53″, 10·43″. Triple with large instruments."
This follows the pattern of preceding
Draco.
Σ 2323 or 39: 18 h. 22 m. + 58° 45′ : 4·7-7·7-7·1 : 358·2°, 20·8° : 3·68″, 88·8″. Triple.
Page 282: 3·80° corrected to 3·80″ to match pattern.
"Σ 2161 or ρ : 17 h. 20 m. + 37° 14′ : 4-5·1 : 314·4° : 3·80″. 'Gem of a beautiful coronet' (Webb)."
Page 288: 'Lyrae' corrected to 'Lyræ'.
"Lyræ ε, double double, 241, 242;"
Page 291: 'obsering' corrected to 'observing'.
"methods of observing, 65-67;"
Page 292: 'elongagations' corrected to 'elongations'.
"orbit and elongations, 89;"
Page 292: 'GUIDFORD' corrected to 'GUILDFORD'.
"BILLING AND SONS, LTD., PRINTERS, GUILDFORD."