-351;
Newton's, 88, 364;
Encke's, 90;
changes of volume, 92;
of brightness, 95;
acceleration, 93, 94;
capture by Mercury, 99;
Winnecke's, 94, 342;
Biela's, 95-97, 333;
Brorsen's, 97;
Vico's, 97, 367;
Faye's, 98;
of 1811, 99-101, 346;
of 1807, 100, 347, 352;
of 1819, 101, 103;
Lexell's, 106, 367;
Tewfik, 178, 358, 362, 369;
Donati's, 323-325, 347, 348;
of 1861, 326, 327, 346;
Perseid, 327, 332;
Leonid, 327, 332, 333, 343;
Klinkerfues's, 335;
Holmes's, 337, 343, 369;
Coggia's, 343, 346, 347;
of 1901, 343;
of 1880, 349, 351;
Aristotle's, 350;
Tebbutt's, 352-355;
Schaeberle's, 355, 356;
Wells's, 356, 357;
of September, 1882, 358-361, 362-364;
Thome's, 361;
Pons-Brooks, 365, 366;
Sawerthal's, 366;
Brooks's, of 1889, 366, 367;
Swift's, 368

Cometary tails, repulsive action upon, 100, 103, 104, 346-348;
coruscations in, 105;
three types, 346-348, 355, 363;
multiple, 347, 348, 351, 352, 355, 363, 368

Comets, subject to gravitation, 88;
of short period, 92, 93;
translucency, 95, 105, 106, 353;
small masses, 96, 106;
capture by planets, 98, 306, 367;
changes of volume, 102, 365, 369;
polarisation of light, 103, 354, 355;
refractive inertness, 106, 353;
relations to meteor-systems, 327, 332-336;
disintegration, 333, 339, 362, 363;
spectra, 342-344, 354, 355, 362-364;
luminous by electricity, 344, 355, 357;
systems, 353, 355, 357, 362, 365;
origin, 369-371

Common, reflectors for eclipse photography, 187;
Jupiter's inner satellite, 293;
detection of great comet near the sun, 358;
its five nuclei, 362;
photographs of Andromeda nebula, 395;
of Orion nebula and Jupiter, 407, 408;
great reflectors, 412, 429;
cluster variables, 436

Common, Miss, drawing of eclipsed sun, 187

Comstock, lunar atmosphere, 264

Comte, celestial chemistry, 140;
astronomy, 142

Cooke, 25-inch refractor, 430

Copeland, comets of 1843 and 1880, 349;
spectrum of comet of 1882, 364;
of Gamma Cassiopeiae, 378;
of Nova Andromedae, 395; of Orion nebula, 407;
discoveries of gaseous stars, 379;
Nova Aurigae, 396, 398

Copernicus, stellar parallax, 16

Cornu, telluric lines in solar spectrum, 202;
velocities in prominences, 205;
ultra-viole