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In the following Compendium of Astronomy, it has been the aim of the author to render the principles of the science so simple, that they may be easily understood; not only by the scholar who spends a few weeks at an academy, but by him whose means and views do not carry him beyond the common school.

The questions at the close of the chapters and sections are intended to aid the teacher, and not to prevent his own, which ought to be often proposed. The questions inserted are important in reviews.

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INDEX.

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45 Epact.

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175

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149

A.
Eclipses.

111
Aphelion, motion of .... 44

catalogue of . 118
sun in

122
Asteroids.

60
Equation of time

84
Astronomy, definition of .. 1

table of.. 89

Equinoxes, precession of .. 47
B.

F.
Binary stars

143
Bissextile
124 Falling stones

167
Brahean system

5

G.
C.
Galaxy...

149
Georgium Sidus

73
Calendar, Julian

124 Globes, artificial
Ceres.

62

circles of terrestrial 175
Characters, astronomical 13

circles of celestial . 177
Clusters of stars.
149 Glossary,

9
Comets.
81 Golden number

121
tails of

82 Greeks computed time 123
Constellations.

146 Group of stars
table of 148
Copernican system

5

H.
Cycles

121
Harvest moon.....

97
Herschel

72
elements of.. 73

satellites of, 74
Days, artificial and natural. 126

prospect of the
Depression of horizon 158

heavens at, 80
Dominical letter...

127
Hour

127
letters, table of. 130

I.
E.
Earth
34 | Indiction, Roman

122
circles of
36 Inferior planets

31
extent of shadow 112

J.
figure of

35
in aphelion and peri Jews computed time 123
helion...
45 Julian calendar.

124
motions of
39 Juno

61
seasons of.
42 Jupiter

64
prospect of the heay-

elements of

66
ens at.

79
satellites of.

66

D.

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Jupiter, prospect of heavens Planetary motion

75
at
80 Planets..

24
Precession of equinoxes . 47
K.

Problems on terrestrial
Kepler, great laws of ..... 25

globe. 177

on celestial 182
L.

Prospect of heavens.. 78

Ptolemaic system.
Latitude

4
156
on the earth

38

R.
Librations of the moon.... 57 | Refraction

151
Longitude

158

of the atmos-
on the earth

phere.. 152
165 Ring of Saturn..

69
Lunar observations. 163 | Roman indiction

122

38

table of ....

78 Sun

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M.

s.
Mars
58 Saturn

68
elements of .

59
elements of.

70
Mercury.

satellites of ...

71
elements of. 26 Seasons, how caused ... 43
>
-, prospect of the
Solar system...

15
heavens at....

16
Mercury and Venus
31 affects tides

107
Meteors

167

27
motion of ...

16
Moon.

49 -, prospect of heavens at 78
-, atmosphere of. 52 spots on ..

22
dark parts of..
52 Stars, fixed

141
librations of

57
double.

143
light of
55 Style

124
motions of.
49 Syzygy

55
phases of.

51
attraction of, causes

T.

Tides
tides

103
103
harvest

97
Time, equation of

84
Months..

divisions of .
125

121
Motion, planetary

Twilight
75

U.
Uranus

72
Nebulæ

149
Nodes of the moon, motion

V.
backward....
114 | Venus

27
---, elements of

30
0.
Vesta .

61
Obliquity of equator 133

W.
table of
134 | Weeks.

126

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154

N.

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P.

Y.
Pallas

63 Year, different kinds..
Parallax

136 of different nations
Penumbra

113
Periods, Chaldean and Ju-

Z.
lian,

121 | Zones

44
123

38

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