THE PROBABLE AGE AND ORIGIN OF THE SUN.
Gravitation Theory.—Amount of Heat emitted by the Sun.—Meteoric
Theory.—Helmholtz’s Condensation Theory.—Confusion of
Ideas.—Gravitation not the chief Source of the Sun’s
Heat.—Original Heat.—Source of Original Heat.—Original Heat
derived from Motion in Space.—Conclusion as to Date of
Glacial Epoch.—False Analogy.—Probable Date of Eocene and
Miocene Periods 346