Sun, 88
houses of the, 43
measurement of distance, 297
photograph of, 96
rotation, 99
temperature of, 105
total eclipse of, 276
weight, 106

Sun and Earth, comparative sizes of, 93

Sun-spots, 95, 101
telescopic aspect of, 97

T

Temporary stars, 77, 78

Three Kings, 49

Total eclipse of the moon, 263
of sun, 276

Triangulation, 288

Triple Star, 72

U

Umbra, 95

Universe, 22, 23, 90

Urania, 8, 9

Uranoliths, 201, 204

Uranus, 162

V

Variable stars, 75

Vega, 40

Venus, 121, 296
phases of, 124

Vesper, 122

Victor Hugo, 24

W

Weighing worlds, 309

Winter constellations, 51

Z

Zodiac, constellations of, 46, 47

Zones, 225

FOOTNOTES:

[1] The French edition of this book is entitled Astronomy for
Women.--TRANSLATOR.

[2] 1 kilometer = 0.6214 mile; 100 kilometers may be taken as 62 miles.
1 kilogram is about 2.2 lb.; 5 kilograms = 11 lb.--TRANSLATOR.

[3] It is useful to know the letters of the Greek Alphabet. They are
easily learned, as follows:

[alpha] Alpha
[beta] Beta
[gamma] Gamma
[delta] Delta
[epsilon] Epsilon
[zeta] Zeta
[eta] Eta
[theta] Theta
[iota] Iota
[kappa] Kappa
[lambda] Lambda
[mu] Mu
[nu] Nu
[xi] Xi
[omicron] Omicron
[pi] Pi
[rho] Rho
[sigma] or [sigma] Sigma
[tau] Tau
[upsilon] Upsilon
[phi] Phi
[chi] Chi
[psi] Psi
[omega] Omega

[4] All the stars visible at any hour during the year can easily be
found with the help of the author's Planisphere mobile.

[5] Let it be remarked in passing that the stars might be much farther
off than they are, and invisible to our eyes; the Heavens would then
assume the aspect of an absolutely empty space, the moon and planets
alone remaining.

[6] 14" = 14 seconds of arc. One second of the circle is an exceedingly
minute quantity. It is 1 millimeter seen at a distance of 206 meters.
One millimeter seen at a distance of 20 m. 62 = 10 secs. These values
are invisible to the unaided eye.

[7] These fine double stars can be observed with the help of the
smallest telescope.

[8] For the explanation of the angular distances of degrees, minutes,
and