" III. Lines and Groups of Active Volcanic Vents 20-29 " IV. Mid-ocean Volcanic Islands 30-40 PART II. _EUROPEAN VOLCANOES._ Chap. I. Vesuvius 41-60 " II. Etna 61-68 " III. The Lipari Islands, Stromboli 69-75 " IV. The Santorin Group 76-83 " V. European Extinct or Dormant Volcanoes 84-91 " VI. Extinct Volcanoes of Central France 92-112 " VII. The Volcanic District of the Rhine Valley 13-125 PART III. _DORMANT OR MORIBUND VOLCANOES OF OTHER PARTS OF THE WORLD._ Chap. I. Dormant Volcanoes of Palestine and Arabia 126-135 " II. The Volcanic Regions of North America 136-145 " III. Volcanoes of New Zealand 146-153 PART IV. _TERTIARY VOLCANIC DISTRICTS OF THE BRITISH ISLES._ Chap. I. Antrim 154-159 " II. Succession of Volcanic Eruptions 160-171 " III. Island of Mull and Adjoining Coast 172-176 " IV. Isle of Skye 177-179 " V. The Scuir of Eigg 180-184 " VI. Isle of Staffa 185-186 PART V. _PRE-TERTIARY VOLCANIC ROCKS._ Chap. I. The Deccan Trap-series of India 187-189 " II. Abyssinian Table-lands 190-193 " III. Cape Colony 194-195 " IV. Volcanic Rocks of Past Geological Periods of the British Isles 196-199 PART VI. _SPECIAL VOLCANIC AND SEISMIC PHENOMENA._ Chap. I. The Eruption of Krakatoa in 1883 201-216 " II. Earthquakes 217-224 PART VII. _VOLCANIC AND SEISMIC PROBLEMS._ Chap. I. The Ultimate Cause of Volcanic Action 225-235 " II. Lunar Volcanoes 236-252 " III. Are we Living in an Epoch of Special Volcanic Activity? 253-257 APPENDIX. A Brief Account of the Principal Varieties of Volcanic Rocks 259-265 Index 268 ILLUSTRATIONS. Fig. 1. Eruption of Vesuvius, 1872-73 _Frontispiece_ " 2. Cotopaxi _Page_ 16 " 3. Volcanic Cone of Orizaba " 21 Map of the World, showing Active and Extinct Volcanoes " 23 " 4. Teneriffe, seen from the Ocean " 31 " 5. View of the Summit of Teneriffe " 35 " 6. Probable Aspect of Vesuvius at Beginning of Christian Era " 43 " 7. View of Vesuvius before 1767 " 50