CONTENTS. Xlll 



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 XXI. 



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 XXII. 



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 cf 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 XXIII. 



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"37 8 



GLOSSARY, 379-395 



INDEX, 396-407 



