--------------------------+
| | Mean Distance | | |
| | from Jupiter. | Sidereal Period. | Diameter.|
| |---------------+------------------+----------|
| | Miles. | Days Hrs. Min. | Miles. |
| I. Io | 260,000 | 1 18 28 | 2,352 |
| II. Europa | 414,000 | 3 13 43 | 2,099 |
| III. Ganymede | 661,000 | 7 3 59 | 3,436 |
| IV. Callisto | 1,162,000 | 16 18 5 | 2,929 |
+-------------------------------------------------------------+

It is seen by the above table that all these moons are larger than
ours, one larger than Mercury, and the asteroids are hardly large
enough to make respectable moons for them. They differ in color:
I. and II. have a bluish tinge; III. a yellow; and IV. is red.
The amount of light given by these satellites varies in the most
sudden and inexplicable manner. Perhaps it may be owing to the
different distributions of land and water on them. The mass of all
of them is .000171 of Jupiter.

[Page 167]
If the Jovian system were the only one in existence, it would be
a surprising object of wonder and study. A monster planet, 85,000
miles in diameter, hung on nothing, revolving its equatorial surface
forty-five miles a minute, holding four other worlds in steady
orbits, some of them at a speed of seven hundred miles a minute,
and the whole system carried through space at five hundred miles
a minute. Yet the discovery of all this display of power, skill,
and stability is only reading the easiest syllables of the vast
literature of wisdom and power.

SATURN.

The god or time; sign [Symbol], his scythe.

MEAN DISTANCE FROM THE SUN, 881,000,000 MILES. DIAMETER, POLAR,
66,500 MILES; EQUATORIAL, 73,300 MILES. AXIAL REVOLUTION, 10H.
14M. PERIODIC TIME, 29T YEARS. MOONS, EIGHT.

The human mind has used Saturn and the two known planets beyond
for the last 200 years as a gymnasium. It has exercised itself
in comprehending their enormous distances in order to clear those
greater spaces, to where the stars are set; it has exercised its
ingenuity at interpreting appearances which signify something other
than they seem, in order that it may no longer be deluded by any
sunrises into a belief that the heavenly dome goes round the earth.
That a wandering point of light should develop into such amazing
grandeurs under the telescope, i