Astronomy;
its perfection in our day, another; and the discoveries of the
spectroscope a third--no less important than either of the others.

While nearly all men are prevented from practical experimentation
in these high realms of knowledge, few [Page viii] have so little
leisure as to be debarred from intelligently enjoying the results
of the investigations of others.

This book has been written not only to reveal some of the highest
achievements of the human mind, but also to let the heavens declare
the glory of the Divine Mind. In the author's judgment, there is no
gulf that separates science and religion, nor any conflict where
they stand together. And it is fervently hoped that anyone who
comes to a better knowledge of God's works through reading this
book, may thereby come to a more intimate knowledge of the Worker.

I take great pleasure in acknowledging my indebtedness to J. M.
Van Vleck, LL.D., of the U.S. Nautical Almanac staff, and Professor
of Astronomy at the Wesleyan University, for inspecting some of the
more important chapters; to Dr. S. S. White, of Philadelphia, for
telescopic advantages; to Professor Henry Draper, for furnishing,
in advance of publication, a photograph of the sun's corona in 1878;
and to the excellent work on "Popular Astronomy," by Professor
Simon Newcomb, LL.D., Professor U. S. Naval Observatory, for some
of the most recent information, and for the use of the unequalled
engravings of Jupiter, Saturn, and the great nebula of Orion.

[Page ix]
CONTENTS.

CHAP.
I. CREATIVE PROCESSES
II. CREATIVE PROGRESS
Constitution of Light
Chemistry of Suns revealed by Light
Creative Force of Light
III. ASTRONOMICAL INSTRUMENTS
The Telescope
The Reflecting Telescope
The Spectroscope
IV. CELESTIAL MEASUREMENTS
Celestial Movements
How to Measure
V. THE SUN
What the Sun does for us
VI. THE PLANETS, AS SEEN FROM SPACE
The Outlook from the Earth
VII. SHOOTING-STARS, METEORS, AND COMETS
Aerolites
Comets
Famous Comets
Of what do Comets consist?
Will Comets strike the Earth?
VIII. THE PLANETS AS INDIVIDUALS
Vulcan
Mercury
Venus
The Earth
The Aurora Borealis
[Page x]
The Delicate Balance of Forces
Tides
The Moon
Telescopic Appearance
Eclipses
Ma