CHAPTER VI.
DENUDATION.
Denudation defined--Its amount equal to the entire mass of stratified deposits in the earth's crust--Horizontal sandstone denuded in Ross-shire--Levelled surface of countries in which great faults occur--Coalbrook Dale--Denuding power of the ocean during the emergence of land--Origin of Valleys--Obliteration of sea-cliffs--Inland sea-cliffs and terraces in the Morea and Sicily--Limestone pillars at St. Mihiel, in France--in Canada--in the Bermudas 66