CHAPTER XIII.. Time.--Geological Phenomena.

TIME.--GEOLOGICAL PHENOMENA.

Time, an element in Nature’s Operations--Geological Science--Its Facts and Inferences--Nebular Hypothesis applied--Primary Formations--Plutonic and Metamorphic Rocks--Transition Series--Palæozoic Rocks--Commencement of Organic Arrangements--Existence of Phosphoric Acid in Plutonic Rocks--Fossil Remains--Coal Formation--Sandstones--Tertiary Formations--Eocene, Miocene, and Pliocene Formations--Progressive changes now apparent--General Conclusions--Physics applied in explanation 332