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A PLAIN STORY SIMPLY TOLD

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EDITED BY 4

THE SCALE OF THE UNIVERSE—THE SOLAR SYSTEM

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THE SOLAR SYSTEM

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THE SUN

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IS THE SUN DYING?

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THE PLANETS

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LIFE IN OTHER WORLDS?

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THE MOON

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METEORS AND COMETS

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THE STELLAR UNIVERSE

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THE NEBULAR THEORY

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THE BIRTH AND DEATH OF STARS

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THE SHAPE OF OUR UNIVERSE

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ASTRONOMICAL INSTRUMENTS

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BIBLIOGRAPHY

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INTRODUCTORY

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THE BEGINNING OF THE EARTH—MAKING A HOME FOR LIFE—THE FIRST 20

FIRST GREAT STEPS IN EVOLUTION

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THE INCLINED PLANE OF ANIMAL BEHAVIOUR

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THE PROCESSION OF LIFE THROUGH THE AGES

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EVOLUTION OF LAND ANIMALS

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THE GEOLOGICAL MIDDLE AGES

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THE EVIDENCES OF EVOLUTION—HOW IT CAME ABOUT

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BIBLIOGRAPHY

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ADAPTATIONS TO ENVIRONMENT

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I. THE SHORE OF THE SEA

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II. THE OPEN SEA

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III. THE DEEP SEA

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IV. THE FRESH WATERS

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V. THE DRY LAND

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VI. THE AIR

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BIBLIOGRAPHY

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ANIMAL AND BIRD MIMICRY AND DISGUISE

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THE ASCENT OF MAN

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BIBLIOGRAPHY

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EVOLUTION GOING ON

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THE DAWN OF MIND

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THE MIND OF MONKEYS

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THE WORLD OF ATOMS

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THE DISCOVERY OF X-RAYS AND RADIUM

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THE DISCOVERY OF THE ELECTRON AND HOW IT EFFECTED A REVOLUTION IN 45

THE ELECTRON THEORY, OR THE NEW VIEW OF MATTER

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WHAT IS ELECTRICITY?

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ETHER AND WAVES

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LIGHT—VISIBLE AND INVISIBLE

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LIGHTNING

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ENERGY: HOW ALL LIFE DEPENDS ON IT

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MATTER, ETHER, AND EINSTEIN

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INFLUENCE OF THE TIDES: ORIGIN OF THE MOON: THE EARTH SLOWING DOWN

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BIBLIOGRAPHY