CHAPTER V

.--INORGANIC GEOLOGICAL DYNAMICS.

_Sect._ 1. Necessity and Object of a Science of Geological Dynamics. 542 _Sect._ 2. Aqueous Causes of Change. 545 _Sect._ 3. Igneous Causes of Change.--Motions of the Earth's Surface. 549 _Sect._ 4. The Doctrine of Central Heat. 554 _Sect._ 5. Problems respecting Elevations and Crystalline Forces. 556 _Sect._ 6. Theories of Changes of Climate. 559

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