CONTENTS. 



CHAPTER VI. 



PAGE 

 THE CLOSE OF THE FIRST EPOCH OF CREATION THE MAG- 



NESIAN LIMESTONE, OR PERMIAN SYSTEM OF DEPOSITS . 103 



THE SECOND, OR MIDDLE EPOCH. 



CHAPTER VII. 



THE COMMENCEMENT OF THE SECOND EPOCH : THE FORMA- 

 TION OF THE NEW RED SANDSTONE, OR TRIASSIC SERIES . 115 



CHAPTER VIII. 



THE MARINE REPTILES, AND OTHER ANIMALS CHARACTERISTIC 



OF THE LIAS , . - . ' . 135 



CHAPTER IX. 



THE GIGANTIC LAND REPTILES, THE FLYING REPTILES, AND 

 OTHER ANIMALS CHARACTERISTIC OF THE OOLITIC AND 

 WEALDEN FORMATIONS . . . . 183 



CHAPTER X. * 



THE INHABITANTS OF THE EARTH DURING THE CRETACEOUS 



PERIOD .... . 227 



CHAPTER XI. 



GENERAL CONSIDERATIONS CONCERNING THE SECONDARY EPOCH 



AND THE CIRCUMSTANCES OF ITS TERMINATION . . 254 



