CHAPTER I.

THEORY OF GEOLOGISTS.

Geology defined--Facts and Theories--Recent Progress of Geology --Stratification of Rocks--Aqueous Rocks; of Mechanical Origin--of Chemical Origin--of Organic Origin--Igneous Rocks, Plutonic and Volcanic--Metamorphic Rocks--Summary of the Rocks that compose the Crust of the Earth--Relative Order of Position--Internal Condition of the Globe--Movements of the Earth’s Crust--Subterranean Disturbing Force--Uplifting and Bending of Strata--Denudation and its Causes--Fossil Remains--their Value in Geological Theory, 30