p.56

...were at work at a remote era of time. The same crumbling down of clay cliffs - the same pebbly sores - the same action of wind & water has been continued throughout all past time, and may continue for all time to come. The laws of nature remain unchanged, though the physical character of a continent may pass through entire revolutions. Oceans may become dry land - the beds of deep lakes may become the shores of other bodies of water - & yet the sae simple processes continue being the similar results of like causes.