xxxii TABLE OF CONTENTS 



PAGE 



Methods of Correlation 1 129 



I. Superposition (1129); 2. Stratigraphic Continuity 

 (1131); 3. Lithic Character (1132); 4. Organic Contents 



(1133) 1129-1133 



a. Index Fossils (i 133) ;b. Grade of Index Fossil (1134); 

 c. Correlation by Equivalent Stages in Development 

 (1135); d. Correlation by Faunas and Floras. Repre- 

 sentative Species (1136) 1133-1136 



5. Correlation by Unconformities and Disconformities 

 (1137); 6. Correlation by Regional Metamorphism 



(1139); 7- Correlation by Diastrophism 1139-1141 



Palffiogeography and Pala^ogeographic Maps 1 144 



Types of Palaeogeographic Maps (1145); Construction of 



Palasogeographic Maps i H'^"! 146 



Bibliography XXXII 1 148 



Index 1 151 



