ARN MORE 241

ILLUSTRATIONS

Pike's Peak _Frontispiece_

FACING PAGE

Sand Dunes in Arizona 44

Grand Canon of the Colorado 45

Castles Carved by Rain and Wind 52

Where All the Water Comes From 53

The Richest Gold and Silver Mines 72

Rocks Being Ground to Flour 73

A Pond Made by a Glacier 88

The Struggle Between a Stream and Its
Banks 89

Ripple Marks and Glacial Striae 102

Glacial Grooves and Markings 103

Crinoid and Ammonite 140

Fossil Corals, Coquina, Hippurite Limestone 141

Fossil Fish 152

Meteorite 153

Eocene Fish and Trilobite 156

How Coal Was Made 157

Banded Sandstone. Opalized Wood 176

Allosaurus 177

A Three-horned Dinosaur 178

Remains of Brontosaurus 179

Restoration of Brontosaurus 182

Ornitholestes, a Small Dinosaur 183

A Mammoth 186

An Ancestor of the Horse 187

Orion, His Dogs, and the Bull 214

Other Fanciful Sketches of Constellations 215

The Sky in Winter 244

The Sky in Spring 244

The Sky in Summer