X CONTENTS. 



PAGE 



CHAPTER VIII. TRIASSIC PERIOD 114 



1. Stratigraphical Evidence ; Bunter, Keuper. 2. Geo- 

 graphical Restoration, land surfaces, the great salt-lake. 



CHAPTER IX. JURASSIC PERIOD 134 



1. Stratigraphical Evidence; Rhsetic and Lias, Middle 

 Jurassic series, Upper Jurassic series. 2. Physical His- 

 tory and Geography ; Lower Jurassic time, Middle Jurassic 

 time, Upper Jurassic time. 



CHAPTER X. CRETACEOUS PERIOD ..... 163 



1. Stratigraphical Evidence; Lower Cretaceous, Upper 

 Cretaceous. 2. Geographical Restoration ; the Wealden 

 Lake, the Vectian Sea, Upper Cretaceous subsidence. 



CHAPTER XI. HANTONIAN PERIOD 196 



1. Stratigraphical Evidence ; Eocene, Oligocene. 2. Geo- 

 graphical Restoration ; Eocene time, Oligocene time, general 

 upheaval of Europe. 



CHAPTER XII. ICENIAN PERIOD 235 



1. Stratigraphical Evidence; Miocene, Pliocene. 2. 

 Geographical Restoration ; Miocene time, Older Pliocene 

 time, Newer Pliocene time. 



CHAPTER XIII. ICENIAN PERIOD, PLEISTOCENE . . . 261 



1. Stratigraphical Evidence; Scotland, England and 

 Wales, Ireland. 2. Physical History and Geographical 

 Changes ; Formation of Boulder-clay, Continental conditions, 

 Subsidence and isolation of the British Islands. 



CHAPTER XIV. SUMMARY or THE GEOGRAPHICAL EVOLUTION 



OF THE BRITISH ISLANDS 304 



Uncertainty of pre-Carboniferous geographies ; post-Car- 

 boniferous changes ; the Triassic continent ; the successive 

 changes which resulted in the formation of the Pliocene landj 

 the isolation of Britain. 



CHAPTER XV. THE THEORY OF THE PERMANENCE OF OCEANS 



AND CONTINENTS 324 



Professor Dana's hypothesis; Dr. Wallace's arguments 

 considered ; conclusions and a different theory suggested. 



INDEX . . . 337 



