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The Crust of the Earth
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What Is the Earth Made of?
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The First Dry Land
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A Study of Granite
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Metamorphic Rocks
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The Air in Motion
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The Work of the Wind
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Rain in Summer
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What Becomes of the Rain?
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The Soil in Fields and Gardens
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The Work of Earthworms
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Quiet Forces That Destroy Rocks
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How Rocks Are Made
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Getting Acquainted with a River
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The Ways of Rivers
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The Story of a Pond
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The Riddle of the Lost Rocks
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The Question Answered
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Glaciers among the Alps
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The Great Ice Sheet
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Following Some Lost Rivers
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The Mammoth Cave of Kentucky
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Land Building by Rivers
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The Making of Mountains
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The Lava Flood of the Northwest
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The First Living Things
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An Ancient Beach at Ebb Tide
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The Lime Rocks
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The Age of Fishes
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King Coal
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How Coal Was Made
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The Most Useful Metal
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The Age of Reptiles
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The Age of Mammals
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The Horse and His Ancestors
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The Age of Man
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Every Family a "Star Club"
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The Dippers and the Pole Star
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Constellations You Can Always See
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Winter Constellations
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Orion, His Dogs, and the Bull
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Seven Famous Constellations
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The Twenty Brightest Stars
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How To Learn More
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Back Matter
Sky Chart Insert
The Sky In Winter
Note.
—These
simplified star maps are not as accurate as a planisphere,
but they may be easier for children. All star maps are like ordinary
maps, except that east and west are transposed. The reason for this is
that you can hold a star map over your head, with the pole star toward
the north, and the map will then match the sky. These maps contain some
constellations that are only for grown-ups to study. The Winter
constellations every child should know are:
Auriga
, the Charioteer | Leo
, the Lion |
Canis Major
, the Big Dog | Orion
, the Hunter |
Canis Minor
, the Little Dog | Perseus
, Which Has the Arc |
Cassiopeia
, the Queen in Her Chair | Taurus
, the Bull |
Cygnus
, the Swan | Ursa Major
, the Great Bear |
| Ursa Minor
, the Little Bear |
The Sky In Spring
Note.
—Once upon a time all
the educated people spoke Latin. It was the
nearest approach to a universal language. So most of the constellations
have Latin names. The English, French and German names are all
different, but if all children would learn the Latin names they could
understand one another. The Spring constellations every child should
know are:
Leo
, the Lion | Scorpio
, the Scorpion |
Lyra
, the Lyre | Ursa Major
, the Great Bear |
Cassiopeia
, the Queen in her Chair | Ursa Minor
, the Little Bear |
| Virgo
, the Virgin |
The Sky In Summer
Note.
—Every sky map is good
for three months, in this way: If this is
correct on June 1st at 10 P.M., it will be correct July 1st at 8 P.M.,
and August 1st at 6 P.M. This is because the stars rise four minutes
earlier every night. Thus, after thirty days, any star will rise thirty
times four minutes earlier, or 120 minutes, or two hours. Children need
not learn all the Summer constellations. The most interesting are:
Auriga
, the Charioteer | Cygnus
, the Swan |
Canis Major
, the Big Dog | Lyra
, the Lyre |
Scorpio
, the Scorpion |
The Sky In Autumn
Note.
—This book tells
how to find all the most interesting stars and
constellations without maps, but many people prefer them. How to use
star maps is explained under "The Sky in Winter." The Autumn
constellations most interesting to children are:
Aquila
, the Eagle | Lyra
, the Lyre |
Auriga
, the Charioteer | Perseus
, Which Has the Arc |
Cassiopeia
, the Queen in Her Chair | Taurus
, the Bull |
Cygnus
, the Swan | Ursa Major
, the Great Bear |
| Ursa Minor
, the Little Bear |
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