6ILLUSTRATIONS.
18CHAPTER XI. WHAT VOLCANOES TEACH US CONCERNING THE NATURE OF THE EARTH'S INTERIOR.
7VOLCANOES.
19CHAPTER XII. THE ATTEMPTS WHICH HAVE BEEN MADE TO EXPLAIN THE CAUSES OF VOLCANIC ACTION.
8CHAPTER I. INTRODUCTORY: NATURE OF THE INQUIRY.
20INDEX.
9CHAPTER II. THE NATURE OF VOLCANIC ACTION.
21Analysis
10CHAPTER III. THE PRODUCTS OF VOLCANIC ACTION.
22Reflection
11CHAPTER IV. THE DISTRIBUTION OF THE MATERIALS EJECTED FROM VOLCANIC VENTS.
23Memorable Quotes
12CHAPTER V THE INTERNAL STRUCTURE OF VOLCANIC MOUNTAINS.