“Thirty years ago, his splendid quarto... devoted to the geology of Sussex, his native county in England, made its appearance. It was followed, at the end of five years, by a thinner quarto, equally a finished production... of the geology of the south-east of England, including Sussex and Tilgate Forest. These original works, abounding with interesting and instructive observations, established the author's reputation throughout Europe as an able geologist, and as an acute and successful expositor.”