| CHAPTER | PAGE |
| I. | The Volcanic Eruption of Krakatoa in 1883 | 1 |
| II. | Some Effects of the Eruption of Krakatoa | 12 |
| III. | The Volcanic Island of Hawaii | 26 |
| IV. | The Volcanic Island of Iceland | 46 |
| V. | Vesuvius | 58 |
| VI. | Other Volcanoes of the Mediterranean | 73 |
| VII. | Orizaba, Popocatepetl, Ixtaccihuatl, and Other Volcanoes of Mexico | 85 |
| VIII. | Coseguina and Other Volcanoes of Central America | 91 |
| IX. | The Volcanic Mountains of South America | 97 |
| X. | Volcanoes of the United States | 105 |
| XI. | The Catastrophe of Martinique and the Volcanic Islands of the Lesser Antilles | 117 |
| XII. | Some Other Noted Volcanic Mountains | 125 |
| XIII. | Jorullo, a Young Volcanic Mountain | 130 |
| XIV. | Mid-Ocean Volcanic Islands | 137 |
| XV. | Submarine Volcanoes | 141 |
| XVI. | Distribution of the Earth's Volcanoes | 148 |
| XVII. | Volcanoes of the Geological Past | 153 |
| XVIII. | LaPlace's Nebular Hypothesis | 157 |
| XIX. | The Earth's Heated Interior, the Cause of Volcanoes | 165 |
| XX. | Some Forms of Lava | 178 |
| XXI. | Mud Volcanoes and Hot Springs | 193 |
| XXII. | The Volcanoes of the Moon | 207 |
| XXIII. | Earthquakes | 219 |
| XXIV. | Some of the Phenomena of Earthquakes | 231 |
| XXV. | The Earthquake of Calabria in 1783 | 245 |
| XXVI. | The Great Lisbon Earthquake of 1755 | 252 |
| XXVII. | The Earthquake of Cutch, India, in 1819 | 257 |
| XXVIII. | The San Francisco Earthquake of April 18, 1906 | 262 |
| XXIX. | Some Other Notable Earthquakes | 269 |
| XXX. | Sodom and Gomorrah and the Cities of the Plain | 281 |
| XXXI. | Instruments for Recording and Measuring Earthquake Shocks | 290 |
| XXXII. | Seaquakes | 296 |
| XXXIII. | The Distribution of Earthquakes | 303 |
| XXXIV. |
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