| Chapter | | Page |
| I. | —Introduction | [1] |
| II. | —The Problem Stated | [21] |
| III. | —The Fire-mist | [39] |
| IV. | —Nebulæ—Apparent and Real | [52] |
| V. | —The Heat of the Sun | [75] |
| VI. | —How the Sun’s Heat is Maintained | [95] |
| VII. | —The History of the Sun | [112] |
| VIII. | —The Earth’s Beginning | [122] |
| IX. | —Earthquakes and Volcanoes | [158] |
| X. | —Spiral and Planetary Nebulæ | [191] |
| XI. | —The Unerring Guide | [207] |
| XII. | —The Evolution of the Solar System | [246] |
| XIII. | —The Unity of Material in the Heavens and the Earth | [261] |
| XIV. | —The First Concord | [294] |
| XV. | —The Second Concord | [308] |
| XVI. | —The Third Concord | [324] |
| XVII. | —Objections to the Nebular Theory | [337] |
| XVIII. | —The Beginning of the Nebula | [348] |
| XIX. | —Concluding Chapter | [361] |
| |
| | Appendices | [369] |
| |
| | Index | [382] |