vi'ii Contents 



CHAPTER IV 



PAGE 



EARLY DAYS IN LONDON 46 



Scientific Work as Unattached Ship-Surgeon — Intro- 

 duction to Loudon Scientific Society — Translating, 

 Receiving, and Lecturing — Ascidians -^Molluscs and 

 the Archetype^ Criticism of Pre-Darwiuian Evolution 

 — Appointment to Geological Survey. --,. 



CHAPTER V 



CREATURES OF THE PAST 



Beginning Palasontological Work — Fossil Amphibia 

 and Reptilia — Ancestry of Birds — Ancestry of the 

 Horse — Imperfect European Series Completed by 

 Marsh's American Fossils — Meaning of Geological Con- 

 temporaneity — Uniformitarianism and Catastrophism 

 Compared with Evolution in Geology— Age of the 

 Earth — Intermediate and Linear Types. 



CHAPTER VI 



HUXLEY AND DARWIN 89 



Early Ideas on Evolution — Erasmus Darwin — Lamarck 

 — Herbert Spencer^ Difference between Evolution and 

 Natural Selection — Huxley's Preparation for Evolu- 

 tion — The Novelty of Natural Selection — The Ad- 

 vantage of Natural Selection as a Working Hypothesis 

 — Huxley's LTnchanged Position with regard to Evolu- ( 



tion and Natural Selection from i860 to 1894. 



CHAPTER VII 



4, 



HE BATTLE FOR EVOLUTION . . . .TIG 



Huxley's Prevision of the Battle — The Causes of the 

 Battle — The Times Review — Sir Richard Owen attacks 



