S.

_Satellites_; the times of their revolutions round their primary

Planets, 52, 73, 80.

Their Orbits compared with each other, with the Orbits of the primary

Planets, and with the Sun’s circumference, 271.

What sort of Curves they describe, 272.

_Saturn_, with his Ring and Moon’s, their Phenomena, 78, 79, 82.

The Sun’s light 1000 times as strong to him as the light of the Full

Moon is to us, 85.

The Phenomena of his Ring farther explained, 204.

_Our blessed_ SAVIOUR, the darkness at his crucifixion supernatural,

352.

The prophetic year of his crucifixion found to agree with an

astronomical calculation, 432.

_Seasons_, different, illustrated by an easy experiment, 200;

by a figure, 202.

_Shadow_, what, 312.

_Sidereal Time_, what, 221;

the number of Sidereal Days in a year exceeds the number of Solar

Days by one, and why, 222.

An easy method for regulating Clocks and Watches by it, 223.

_Signs of the Zodiac_, their names and characters, 91, 365.

How they are numbered by Astronomers, 354.

_Sines_, line of, how to make, 369.

SMITH, (Rev. Dr.) his companion between Moon-light and Day-light, 85.

His demonstration that light decreases as the square of the distance

from the luminous body increases, 169.

(_Mr._ GEORGE) his Dissertation on the Progress of a Solar Eclipse,

321-324.

_Solar Astronomer_, the judgment he might be supposed to make

concerning the Planets and Stars, 135, 136.

_Sphere_, parallel, oblique, and right, 131.

It’s Circles, 198.

_Spring and Neap Tides_, 302.

_Stars_, their vast distance from the Earth, 3, 196.

Probably not all at the same distance, 4 Shine by their own light,

and are therefore Suns 7,

probably to other worlds, 8 A demonstration that they do not move

round the Earth, 111.

Have an apparent slow motion round the Poles of the Ecliptic, and

why, 251.

A catalogue of them, 399.

_Cloudy_, 402.

New, 403.

Some of them change their places, 404.

_Starry Heavens_ have the same appearance from any part of the Solar

System, 132.

SUN appears bigger than the Stars, and why, 4 Turns round his Axis, 18.

His proportional breadth as seen from the different Planets, 87.

Describes unequal arcs above and below the Horizon at different

times, and why, 130.

His Center the only place from which the true motions of the Planets

could be seen, 135.

Is for half a year together visible at each Pole in it’s turn, and as

long in visible, 200, 294.

Is nearer the Earth in Winter than in Summer, 205.

Why his motion agrees so seldom with the motion of a well regulated

Clock, 224-245.

Would more than fill the Moon’s Orbit, 271.

Proved to be much bigger than the Earth, and the Earth to be bigger

than the Moon, 315.

To calculate his true place, 360.

_Systems_, the Solar, 17-95;

the Ptolemean, 96;

the Tychonic, 97.

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