 
| PART I. THE EARTH | | PAGE | | The Great Stone Book | 3 | | The Fossil Fish | 6 | | The Crust of the Earth | 9 | | What Is the Earth Made of? | 14 | | The First Dry Land | 22 | | A Study of Granite | 27 | | Metamorphic Rocks | 31 | | The Air in Motion | 35 | | The Work of the Wind | 44 | | Rain in Summer, by Henry W. Longfellow | 50 | | What Becomes of the Rain? | 51 | | The Soil in Fields and Gardens | 58 | | The Work of Earthworms | 63 | | Quiet Forces That Destroy Rocks | 68 | | How Rocks Are Made | 72 | | Getting Acquainted With a River | 78 | | The Ways of Rivers | 84 | | The Story of a Pond | 90 | | The Riddle of the Lost Rocks | 93 | | The Question Answered | 96 | | Glaciers Among the Alps | 98 | | The Great Ice Sheet | 104 | | Following Some Lost Rivers | 110 | | The Mammoth Cave of Kentucky | 114 | | Land Building by Rivers | 121 | | The Making of Mountains | 126 | | The Lava Flood of the Northwest | 130 | | The First Living Things | 134 | | An Ancient Beach at Ebb Tide | 138 | | The Lime Rocks | 147 | | The Age of Fishes | 152 | | King Coal | 155 | | How Coal Was Made | 160 | | The Most Useful Metal | 167 | | The Age of Reptiles | 175 | | The Age of Mammals | 180 | | The Horse and His Ancestors | 186 | | The Age of Man | 194 | | PART II. THE SKY | | Every Family a "Star Club" | 201 | | The Dippers and the Pole Star | 207 | | Constellations You Can Always See | 213 | | Winter Constellations | 219 | | Orion, His Dogs, and the Bull | 223 | | Seven Famous Constellations | 231 | | The Twenty Brightest Stars | 239 | | How to Learn More | 241 |
|
  |
