[46]EARLY DAYS IN LONDON
Scientific Work as Unattached Ship-Surgeon—Introduction to London Scientific Society—Translating, Receiving, and Lecturing—Ascidians—Molluscs and the Archetype—Criticism of Pre-Darwinian Evolution—Appointment to Geological Survey.
[67]CREATURES OF THE PAST
Beginning Palæontological Work—Fossil Amphibia and Reptilia—Ancestry of Birds—Ancestry of the Horse—Imperfect European Series Completed by Marsh's American Fossils—Meaning of Geological Contemporaneity—Uniformitarianism and Catastrophism Compared with Evolution in Geology—Age of the Earth—Intermediate and Linear Types.
[89]HUXLEY AND DARWIN
Early Ideas on Evolution—Erasmus Darwin—Lamarck—Herbert Spencer—Difference between Evolution and Natural Selection—Huxley's Preparation for Evolution—The Novelty of Natural Selection—The Advantage of Natural Selection as a Working Hypothesis—Huxley's Unchanged Position with regard to Evolution and Natural Selection from 1860 to 1894.