r atmospheric absorption, 221

Boulliaud, period of Mira, 10

Bouvard, tables of Uranus, 78;
Encke's comet, 90

Boys, radio-micrometer, 220;
density of the earth, 261

Bradley, discoveries of aberration and nutation, 3;
solar translation, 10;
star-distances, 10, 16;
observation
on Castor, 17;
instruments, 28, 120;
observations reduced by Bessel and Auwers, 32, 39

Brahe, Tycho, star of 1572, 24

Brandes, observations of meteors, 327, 334;

Braun, prominence photography, 197;
density of the earth, 261

Brayley, meteoric origin of planets, 311

Bredikhine, theory of cometary appendages, 100, 348;
repulsive forces, 346, 347;
chemical differences, 347, 348;
formative types, 351, 352, 355, 363, 369;
structure of chromosphere, 199;
red spot on Jupiter, 294;
Andromede meteors, 337;
stationary radiants, 341;
spectrum of Coggia's comet, 343

Bremiker, star maps, 81

Brenner, rotation of Venus, 252

Brester, _Theorie du Soleil_, 152

Brewster, diffraction theory of corona, 67;
telluric lines in solar spectrum, 134;
absorption spectra, 136

Brinkley, ostensible stellar parallaxes, 33

Brisbane, establishment of Paramatta Observatory, 6, 90

Brooks, fragment of 1882 comet, 363;
cometary discoveries, 365, 366

Bruennow, stellar parallaxes, 113, 416

Bruno, Giordano, motion of stars, 9

Buffham, rotation of Uranus, 303

Buffon, internal heat of Jupiter, 289

Bunsen, discovery of spectrum analysis, 132

Burchell, magnitude of Eta Carinae, 48

Burnham, stellar orbits, 46;
coronal photographs, 186;
measures of Nova Aurigae, 399;
of planetary nebulae, 404;
discoveries of double stars, 418, 430, 433, 435;
catalogue, 419;
system of 61 Cygni, 419

Burton, canals of Mars, 279;
rotation of Jupiter's satellites, 292

Calandrelli, stellar parallaxes, 33

Callandreau, capture theory of comets, 98

Campani, Saturn's dusky ring, 86

Campbell, Lieutenant, polarisation of corona, 170

Campbell, Professor, stellar radial velocities, 39, 406, 434;
flash spectrum, 189;
spectroscopic observations of Saturn's rings, 300;
Wolf-Rayet stars, 380;
spectroscopic binaries, 389;
Nova Aurigae, 398;
translation of solar system, 406;
stellar diffraction-spectra, 440

Canals of Mars, 278-280

Cannon, Miss A. J.