'Equestrian Geology' of, [28];
influence on Lyell, [34], [44];
2nd edition of Vol. I. of Principles dedicated to, [44];
his opposition to Lyell, [71]
Cambridge, Darwin at, [97], [98]
Candolle, A. P. de, on struggle for existence, [107]
Catastrophism, origin of idea of, [14], [15];
defined, [22];
origin of term, [22];
connexion with orthodoxy, [21];