xii CONTENTS. 



CHAPTER XII. 



The Carboniferous period Relations of Carboniferous rocks 

 to Devonian The Carboniferous Limestone or Sub-Car- 

 boniferous series The Millstone-grit and the Coal- 

 measures Life of the period Structure and mode of 

 formation of Coal Plants of the Coal 160-174 



CHAPTER XIII. 



Animal life of the Carboniferous period Protozoa Corals 

 Crinoids Pentremites Structure of Pentremites 

 Echinoids Structure of Echinoidea Annelides Crus- 

 tacea Insects Arachnids Myriapods Polyzoa Bra- 

 chiopods Bivalves and Univalves Cephalopods Fishes 

 Labyrinthodont Amphibians Literature 174-196 



CHAPTER XIV. 



The Permian period General succession,, characters, and 

 mode of formation of the Permian deposits Life of the 

 period Plants Protozoa Corals Echinoderms Anne- 

 lides Crustaceans Polyzoa Brachiopods Bivalves 

 Univalves Pteropods Cephalopods Fishes Amphi- 

 bians Reptiles Literature 196-208 



CHAPTER XV. 



The Triassic period General characters and subdivisions of 

 the Trias of the Continent of Europe and Britain Trias 

 of North America Life of the period Plants Echin- 

 oderms Crustaceans Polyzoa Brachiopods Bivalves 

 Univalves Cephalopods Intermixture of Palaeozoic 

 with Mesozoic types of Molluscs Fishes Amphibians 

 Reptiles Supposed footprints of Birds Mammals 

 Literature . . '. 208-232 



CHAPTER XVI. 



The Jurassic period General sequence and subdivision of 

 the Jurassic deposits in Britain Jurassic rocks of North 

 America Life of the period Plants Corals Echino- 

 derms Crustaceans Insects Brachiopods Bivalves 

 Univalves Pteropods Tetrabranchiate Cephalopods 

 Dibranchiate Cephalopods Fishes Reptiles Birds 

 Mammals Literature 232-264 



CHAPTER XVII. 



The Cretaceous period General succession and subdivisions 

 of the Cretaceous rocks in Britain Cretaceous rocks of 

 North America Life of the period Plants Protozoa 

 Corals Echinoderms Crustaceans Polyzoa Brachio- 

 pods Bivalves Univalves Tetrabranchiate and Dibran- 

 chiate Cephalopods Fishes Reptiles Birds Litera- 

 ture 264-293 



