Day after day has there been a succession of earthquake shocks, that, as the plutonic paroxysm increases in intensity, become stronger and more frequent, and the mountain-waves roll outwards in ever-widening circles, to rise and fall in distant and solitary seas, or to break in long lines of foam on nameless islands unknown to the geographer.

Sketch-book of Popular Geology - Lecture Third (p. 109), William P. Nimmo & Company. Edinburgh, Scotland. 1880