CONTENTS.

PAGE

[Introduction] 7

CHAPTER I.

[Statement of the Problem of Solar Energy] 17

CHAPTER II.

[The Constitution and Phenomena of the Sun] 39

CHAPTER III.

[The Mode of Solar Energy] 70

CHAPTER IV.

[The Source of Solar Energy] 96

CHAPTER V.

[The Distribution and Conservation of Solar Energy] 139

CHAPTER VI.

[The Phenomena of the Stars] 162

CHAPTER VII.

[Temporary Stars, Meteors, and Comets] 187

CHAPTER VIII.

[The Phenomena of Comets] 210

CHAPTER IX.

[Interpretation of Cometic Phenomena] 225

CHAPTER X.

[The Resolvable Nebulæ, Star-Clusters and Galaxies] 237

CHAPTER XI.

[The Gaseous Nebulæ] 253

CHAPTER XII.

[The Nebular Hypothesis: its Basis and its Difficulties] 268

CHAPTER XIII.

[The Genesis of Solar Systems and Galaxies] 282

CHAPTER XIV.

[The Mosaic Cosmogony] 308

CHAPTER XV.

[Conclusion. The Harmony of Nature’s Laws and Operations] 341

[Reference Index of Authorities Cited] 349

[Classified Index of Subject-Matter] 353