Dedication
To illustrate unconformable Stratification. See page 60.
Epigraph
“The mind seemed to grow giddy by looking so far into the abyss of time; and while we listened with earnestness and admiration to the philosopher who was now unfolding to us the order and series of these wonderful events, we became sensible how much farther reason may sometimes go than imagination can venture to follow.”—Playfair, Biography of Hutton.