Bond, W. C., observation of Neptune's satellite,[ 84];
discovery of Hyperion,[ 85]
of Saturn's dusky ring,[ 86]
resolution of nebulæ, [119]
celestial photography, [153] [409]
satellite-transit on Jupiter, [291]
Borda, repeating circle, [121]
Boss, solar translation,[ 40];
observations on comets, [352] [356]
Bossert, proper motions of stars, [415]
Bouguer, solar 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
[Pg 473] observation
on Castor,[ 17]
instruments,[ 28], [120]
observations reduced by Bessel and Auwers,[ 32],[ 39]
Brahe, Tycho, star of 1572[ 24]