anals on Mars, 220

Cancri 20, 154

Cancri, z, 154

Cancri, th, 154

Canis major, 419

Canopus, 422

Cape Observatory, 27

Capella, 414, 480, 487

Carboniferous period, 518

Cardiff, tides at, 538

Cassini, J.D., and double stars, 434;
and Saturn's satellites, 294;
and the rings of Saturn, 278

Cassiopeia, 412

Castor, 420, 487;
a binary star, 437;
revolution of, 437

Catalogues of stars, 310, 311;
Messier's, 529

Catharina, 92

Centauri, a, 422;
Dr. Gill's observations of, 451;
Henderson's measurement of distance of, 442, 451

Ceres, 231, 232, 238;
and meteorites, 404, 405

Chaco meteorite, the, 398

Chacornac, and the lunar crater Schickard, 90

_Challenger_, the cruise of the, and magnetic particles in
the Atlantic, 408

Challis, Professor, 326;
his search for Neptune, 327, 328, 331, 332

Chandler, Mr., and Algol, 485

Charles's Wain, 28

Chepstow, tides at, 538

Cheseaux, discoverer of comet of 1744, 367

Chicago, telescope at Yerkes Observatory, 16

Chladni and the meteorite of Siberia, 392

Chromium in the Sun, 50

Chromosphere, the, 54

Chronometers tested by the Moon, 80

Clairaut and the attraction of planets on comets, 342, 343

Clavius, 91;
and Jupiter's satellites, 267

Clock, astronomical, 23

Clusters, star, 461-464

Cobalt in the Sun, 50

Coggia's comet, 1874, 337

Colour of light and indication of its source, 46

Colours, the seven primary, 45

Columbiad, the, 401

Columbus, 7

Comets, 112, 149, 250, 336;
and the spectroscope, 355;
attraction from planets, 342, 360;
Biela's, 357;
Biela's and the Andromedes, 390;
Clairaut's investigations, 342, 343;
Coggia's, 337;
Common's (1882), 354;
connection of, with shooting star showers, 388;
constitution of, 336;
containing sodium and iron, 356;
Donati's (1858), 353, 358, 366;
eccentricity of, 360;
Encke's, 344-352;
existence of carbon in, 356, 367;
gravitation and, 343, 348;
Halley's investigations about, 341-344;
head or nucleus of, 337;
Lexell's, 370;
mass of, 359;
movements of, 336;
Newton's explanations of, 338;
non-periodic, 353-356;
of 1531, 341;
of 1607, 341;
of 1681, 338, 339;
of 1682, 341;
of 1744 (Cheseaux's), 367;
of 1818, 345;
of 1843, 352;
of 1866, 388;
of 1874, 337;
of 1892, 355;
origin of, 369;
parabolic orbits of, 338-340, 360;
periodic return of, 338-341;
shape of,