6 INTRODUCTION. 



with relation to the areas of recent elevation, and to 

 the points subject to volcanic eruptions, fully accord 

 with this theory of their origin. 1 



1 A brief account of my views on coral formations, now published 

 in my Journal of Eesearches, was read May 31, 1837, before the Geo- 

 logical Society, and an abstract has appeared in the Proceedings. 



