VI 



CONTENTS. 



CHAP. IX. 



TIDES AND OCEANIC HIGHWAYS, . 



CHAP. X. 



CHANGES IN OCEANIC REGIONS, 



CHAP. XI. 



ALTERATIONS OP COAST-LINE, 



CHAP. XII. 



INTERIOR LAND CHANGES, . 



CHAP. XIII. 



THB ATMOSPHERE AND ITS CURRENTS, 



CHAP. XIV. 



AQUEOUS ATMOSPHERIC PHENOMENA, 



CHAP. XV. 



PHTSICAL CLIMATE, . . . 



CHAP. XVI. 



OPTICAL PHENOMENA, 



CHAP. XVII. 



GEOGRAPHICAL DISTRIBUTION OP PLANTS, 



CHAP. XVIII. 



DISTRIBUTION OP ANIMALS, 



CHAP. XIX. 



DISTRIBUTION OP THE HUMAN RACE, 



GEOLOGY. 



INTRODUCTORY CHAPTER, 



CHAP. I. 



THB STRUCTURE AND CLASSIFICATION OF ROCKS, 



349 



370 

 386 

 407 

 435 

 461 

 484 

 51C 

 546 

 571 

 595 



fill 

 622 



CHAP. II. 



PLUTONIC OR IGNEOUS HOCKS, 



PAOK 



613 



CHAP. III. 



GNEISS, MICA SCHIST, AND CLAY SLATE SYSTEMS, 657 



CHAP. IV. 

 THE SILURIAN SYSTEM, 6C7 



CHAP. V. 



THE OLD RED SANDSTONE SYSTEM, . . 6S1 



CHAP. VI. 



THE CARBONIFEROUS SYSTEM, . . 690 



CHAP. VII. 

 THE PERMIAN AND TRIASSIC SYSTEMS LOWER 



AND UPPER NEW RED SANDSTONE, . 707 



CHAP. VIII. 

 THE OOLITIC SYSTEM, . . . 717 



CHAP. IX. 



THE CRETACEOUS SYSTEM, . . .731 



CHAP. X. 



THE TERTIARY SYSTEM, . . . 737 



CHAP. XL 



DRIFT AND ERRATIC BLOCKS, . . 751 



CHAP. XII. 

 ALLUVIUM RECENT FORMATIONS, . 7C6 



CHAP. XIII. 



GENERAL INDICATIONS, 



7S4 



