CONTENTS. Xlil 



CHAPTER XX. 



The Pliocene period— Pliocene deposits of Britain— Of Europe— Of 

 North America— Life of the period — Climate of the period as 

 indicated by the Invertebrate animals — The Pliocene Mammalia 

 — Literature relating to the Tertiary deposits and their fossils, 323-333 



CHAPTER XXL 



The Post-Pliocene period— Division of the Quaternary deposits into 

 Post-Pliocene and Recent — Relations of the Post-Pliocene de- 

 posits of the northern hemisphere to the "Glacial period" — 

 Pre-Glacial deposits — Glacial deposits — Arctic Mollusca in Gla- 

 cial beds — Post-Glacial deposits — Nature and mode of formation 

 of high-level and low-level gravels — Nature and mode of forma- 

 tion of cavern-deposits — Kent's Cavern — Post-Pliocene deposits 

 of the southern hemisphere, 334-344 



CHAPTER XXn. 



Life of the Post-Pliocene period — Effect of the coming on and de- 

 parture of the Glacial period upon the animals inhabiting the 

 northern hemisphere — Birds of the Post-Pliocene — Mammalia of 

 the Post- Pliocene— ^ Climate of the Post-Glacial period as deduced 

 from the Post-Glacial Mammals — Occurrence of the bones and 

 implements of Man in Post-Pliocene deposits in association with 

 the remains of extinct Mammalia — Literature relating to the Post- 

 Pliocene period, 344-366 



CHAPTER XXHL 



The succession of life upon the globe — Gradual and successive intro- 

 duction of life-forms — "What is meant by "lower "and "higher" 

 groups of animals and plants — Succession in time of the great 

 groups of animals in the main corresponding with their zoological 

 order — Identical phenomena in the vegetable kingdom — Persist- 

 ent types of life — High organisation of many early forms — Bear- 

 ings of Palaeontology on the general doctrine of Evolution, 367-374 



Appendix. — Tabular view of the chief Divisions of the Animal 



Kingdom, . 375-378 



Glossary, . 379-395 



Index 396-407 



