CONTENTS VOLUME II. ix 



assic System Bunter Sandstein Muschelkalk Keuper Am- 

 monites Fossils. 



FIFTH GEOLOGICAL EPOCH Lias or Liassic System Fossils Ich- 

 thyosaurus Pleisiosaurus Pterodactylus Oolite System Fos- 

 sils. . P. 36 M 



LESSON IV. 



SECONDARY FORMATION continued. 



SIXTH GEOLOGICAL EPOCH Cretaceous Formation Lower Cretace- 

 ous System Fossils Wealden Deposit Greensand Gault 

 Fossils Upper Cretaceous System Fossils Extent of Cretace- l 

 ous Formation Table of Formations P. 66 77 



LESSON V. 



SEVENTH GEOLOGICAL EPOCH Tertiary Formation Eocene Beds- 

 Paris Basin Fossils Anoplotherium Paleotherium Miocene 

 Beds Dinotherium Lignitos Pliocene Beds Fossils Bone 

 Caverns. 



SUPERFICIAL DEPOSITS Drift Diluvium Megatherium Boulder 

 Formation Alluvium Big Bone Lick. 



EIGHTH GEOLOGICAL EPOCH Modern Formation P. 77 



LESSON VI. 



INFLUENCE OF INTERNAL AGENTS ON THE StTHFACE OF THE EARTH. 



EARTHQUAKES Description of Effects of Changes of Level pro- 

 duced by Upheaval and Subsidence Constant Level of Seas 

 Slow and Progressive Subsidence General Conclusion. 



VOLCANIC PHENOMENA Explosion Eruption Island of Saint 

 George Monte-Nuovo Jorullo Vesuvius Definition of a Vol- 

 cano Submarine Eruptions Volcan of Unalaska Crater of 

 Elevation Formation of Craters Effects of Upheaval Form of 

 Volcanic Islands Periods in the Formation of a Volcano Inte- 

 rior of Craters Kirauea Solfatara Volcanic Ashes Lava Cur- 

 rents Characters of Lavas Dykes Gaseous Volcanic Products 

 Eruption of Mud Solid Products of Volcanoes Trachyte Ob- 

 sidian Compact Lavas Porous Lavas P. 96122 



LESSON VII. 



INFLUENCE OF EXTERNAL AoENTS ON THE SURFACE OF THE EARTH 



Effects of the Atmosphere Degradation Effects of Winds 

 Dunes Effects of Lightning. 



EFFECTS OF WATER Dissolving Power Softening Power Denu- 

 dation Erosion Effects of Weight of Water Running Waters 

 Debacle of Lakes Mud-Torrents Slope of Torrents and Riv- 

 ers Rolled Flints Transportation by Ice and Glaciers Action 



