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which is probably the only efficient principle of the creation of the physical world, as it is of its preservation."

Such is a brief outline of one of the most sublime speculations that has ever resulted from the efforts of human thought. It carries us back to that grand epoch when "in the beginning God created the heavens and the earth," when matter was first called into being in its unformed nebulous condition, and "the earth was without form and void," and darkness covered the mighty deep of unfathomable space. But the Spirit of God moved on the boundless flood of vaporous matter scattered through the dark profound, and gave to each particle its now eternal function, impressed the laws of gravitation and motion, selected the grand centres about which the germs of suns and systems should form, and in infinite wisdom drew the plan of that one scheme which we have attempted to examine, among the millions that shine in splendour throughout the boundless empire of space.

APPENDIX.

TABLES OF ELEMENTS.

SOLAR ELEMENTS, EPOCH 1ST JAN., 1801.

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Rotation in mean solar hours...

Time of passing over one degree of mean longitude

Eccentricity of orbit (semi-axis major 1)

Volume (earth as 1)

Mass (earth as 1).

....

Mean distance in miles

Same (earth's radius 1)

Density (earth as 1).

Diameter in miles

Gravity at equator..

In one second of time bodies fall in feet.

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ELEMENTS OF THE ORBIT OF MERCURY,

EPOCH 1ST JAN., 1801.

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Weight of a terrestrial pound

Space fallen through in one second of time, in feet

Mass (earth's as 1)

6"-69

3,089

0.398

0-0595

1.225

10.58

4:59

018

7.70

0.0769

ELEMENTS OF VENUS FOR THE 1ST JAN., 1840.

Mean distance from the sun in miles

Same (earth's distance as 1)

Greatest distance, same unit..
Least distance, same unit

Eccentricity (semi-axis major as 1)
Annual variation of same (decrease)
Sidereal revolution in days.
Synodical revolution in days
Longitude of the perihelion..
Annual variation of same (decrease)
Longitude of the ascending node
Annual variation of same (decrease)
Inclination of orbit to the ecliptic
Annual variation of same (increase)
Mean daily motion in orbit..
Time of rotation on axis
Inclination of axis to the ecliptic
Apparent diameter..

Diameter in miles..

Diameter (earth's being 1)

Volume (earth's being 1)

Mass or weight (earth's being 1)

Density (earth's being 1)....

Light received at perihelion (earth's being 1)

Same at aphelion (earth's being 1)

Weight of a terrestrial pound, or gravity

Space fallen through in one second of time, in feet

68,713,500

7233317

7282636

•7183998

⚫0068183

•0000006271

224-7007754 583.920

124° 14' 25":6 3" 24 75° 11' 29"-8 20"-50 3° 23' 31" 4 0".07 96' 7"-8 23h 21m 21s Uncertain 17"-10 7,896

ELEMENTS OF THE EARTH, 1ST JAN., 1801.

0.925

.9960

894

0.923

1.94

1.91

0.90

145

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365d 06h 09m 09s'6

365d 05h 48m 49s'7

Mean sidereal revolution (solar days)

Mean tropical revolution

Mean annualistic revolution

Revolution of the sun's perigee (solar days)

Mean longitude (20" for aberration)

.....

Earth's motion in perihelio in a mean solar day

Mean motion in a solar day

Mean motion in a sidereal day

Motion in aphelion in a mean solar day

Mean longitude of perihelion..

Annual motion of perihelion (east)..

...

Same referred to the ecliptic

Complete tropical revolution of same in years

Obliquity of the ecliptic.....

Annual diminution of same

Nutation (semi-axis major)
Precession (annual); luni-solar

Precession in longitude

Complete revolution of vernal equinox in years.

Lunar nutation in longitude

Solar nutation in longitude

Eccentricity of orbit (semi-axis major 1)..
Annual decrease....

Daily acceleration of sidereal over mean solar time

From summer solstice to autumnal equinox

From vernal equinox to summer solstice..

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365d 06h 13m 49s'3

7,645,793 100° 39' 10"-2

1° 01' 09"-9 0° 59′ 08"-33 0° 59′ 58" 64 0° 57' 11":50 99° 30′ 05"0

11"-8 1'01"-9

20.984

23° 27′ 56′′-5

0"-457

9"-4

50":4

50"-1

25,868

17"-579

1" 137 0.01678356 0.0000004163 3' 55" 91

92d 21h 50m

93d 13h 44m

89d 16h 44m

89d 01h 33m

0.0000028173

5.6747

7,916

7,898

7,924

0.00346

8' 13" 3

20" 25

ELEMENTS OF THE MOON.-EPOCH 1ST JAN., 1801.

Mean distance from the earth (earth's radius 1)

Mean sidereal revolution in days

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ELEMENTS OF MARS FOR THE 1ST JAN., 1840

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Density (earth's being 1)..

Light received at perihelion (earth's being 1)

Same at aphelion (earth's being 1).

Weight of a terrestrial pound, or gravity

Space fallen through in one second of time, in feet..

5"-8

4,070

0.519

0.1364

0.134

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