Xl. ABSTRACT OF PROCEEDINGS. 



If the activities consequent upon subsidence be evaluated, such 

 subsidence being possibly as much as 10,000 or 20,000 years old, 

 it will be seen that the features described above would be 

 unexplained in their entirety Marine and subaerial action, how- 

 ever, on emerged features, formed after submergence, afford a 

 sufficient explanation. 



