ess_.

"The earlier chapters describing glacial action, and the traces of it in
North America--especially the defining of its limits, such as the
terminal moraine of the great movement itself--are of great interest and
value. The maps and diagrams are of much assistance in enabling the
reader to grasp the vast extent of the movement."--_London Spectator_.

RICHARD A. PROCTOR'S WORKS.

_OTHER WORLDS THAN OURS: The Plurality of Worlds, Studied under the
Light of Recent Scientific Researches_. By RICHARD ANTHONY PROCTOR. With
Illustrations, some colored. 12mo. Cloth, $1.75.

CONTENTS.--Introduction.--What the Earth teaches us.--What we learn from
the Sun.--The Inferior 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 Phy