GLACIERS. Louis Agassiz 502 VOLCANIC ACTION. Sir Archibald Geikie 516 THOUGHTS ABOUT KRAKATOA. Sir Robert S. Ball 527 VOLCANOES. Sir Archibald Geikie 536 EARTHQUAKES. William Hughes 559 MOUNTAINS. A. Keith 566 LAKES--FRESH, SALT, AND BITTER. Sir Archibald Geikie 573 UNDERGROUND WATER: SPRINGS, CAVES, RIVERS, AND LAKES. Élisée Reclus 588 RIVERS. A. Keith Johnston 621 SWAMPS AND MARSHES. Élisée Reclus 628 LOWLAND PLAINS. William Hughes 634 THE SMELL OF EARTH. G. Clarke Nuttall 648 DESERTS. Élisée Reclus 654 THE PRIMITIVE OCEAN. G. Hartwig 666 THE FLOOR OF THE OCEAN. John James Wild 676 CORAL FORMATIONS. Charles Darwin 689 MAGNITUDE AND COLOR OF THE SEA. G. Hartwig 707 TIDAL ACTION. Sir Robert S. Ball 713 THE GULF STREAM. Lord Kelvin 727 THE PHOSPHORESCENCE OF THE SEA. G. Hartwig 750 THE SEASHORE. P. Martin Duncan 763 THE OCEAN OF AIR. Agnes Giberne 773 WEATHER. Sir Ralph Abercromby 784 THE ROMANCE OF A RAINDROP. Arthur H. Bell 792 THE RAINBOW. John Tyndall 799 SNOW, HAIL, AND DEW. Alexander Buchan 807 THE AURORA BOREALIS. Richard A. Proctor 813 CLOUDS. D. Wilson Barker 819 WINDS. William Hughes 828 SQUALLS, WHIRLWINDS, AND TORNADOES. Sir Ralph Abercromby 845 THE STORY OF THE UNIVERSE VOLUME II THE EARTH: LAND, SEA, AND AIR THE STORY OF THE UNIVERSE _I.--THE EARTH’S CRUST_ FORMATION OF THE EARTH --ÉLISÉE RECLUS