ior Planets.--Mars, the Miniature of our
Earth.--Jupiter, the Giant of the Solar System.--Saturn, the Ringed
World.--Uranus and Neptune, the Arctic Planets.--The Moon and other
Satellites.--Meteors and Comets: their Office in the Solar
System.--Other Suns than Ours.--Of Minor Stars, and of the
Distribution of Stars in Space.--The Nebulae: are they External
Galaxies?--Supervision and Control.

_OUR PLACE AMONG INFINITIES._ A Series of Essays contrasting our Little
Abode in Space and Time with the Infinities around us. To which are
added Essays on the Jewish Sabbath and Astrology. 12mo. Cloth, $1.75.

CONTENTS.--Past and Future of the Earth.--Seeming Wastes in
Nature.--New Theory of Life in other Worlds.--A Missing Comet.--The
Lost Comet and its Meteor Train.--Jupiter.--Saturn and its
System.--A Giant Sun.--The Star Depths.--Star Gauging.--Saturn and
the Sabbath of the Jews.--Thoughts on Astrology.

_THE EXPANSE OF HEAVEN._ A Series of Essays on the Wonders of the
Firmament. 12mo. Cloth, $2.00.

CONTENTS.--A Dream that was not all a Dream.--The Sun.--The Queen
of Night.--The Evening Star.--The Ruddy Planet.--Life in the Ruddy
Planet.--The Prince of Planets.--Jupiter's Family of Moons.--The
Ring-Girdled Planet.--Newton and the Law of the Universe.--The
Discovery of Two Giant Planets.--The Lost Comet.--Visitants from
the Star Depths.--Whence come the Comets?--The Comet Families of
the Giant Planets.--The Earth's Journey through Showers.--How the
Planets Grew.--Our Daily Light.--The Flight of Light.--A Cluster of
Suns.--Worlds ruled by Colored Suns.--The King of Suns.--Four
Orders of Suns.--The Depths of Space.--Charting the Star
Depths.--The Star Depths Astir with Life.--The Drifting Stars.--The
Milky Way.

_THE MOON: Her Motions, Aspect, Scenery, and Physical Conditions._ With
Three Lunar Photographs, Map, and Many Plates, Charts, etc. 12mo. Cloth,
$2.00.

CONTENTS.--The Moon's Distance, Size, and Mass.--The Moon's
Motions.--The Moon's Changes of Aspect, Rotation, Libration,
etc.--Study of the Moon's Surface.--Lunar Celestial
Phenomena.--Condition of the Moon's Surface.--Index to the Map of
the Moon.

_LIGHT SCIENCE FOR LEISURE HOURS._ A Series of Familiar Essays on
Scientific Subjects, Natural Phenomena, etc. 12mo. Cloth, $1.75.

D. APPLETON AND COMPANY, NEW YORK.