40 Longitude 20 West 



CHART OF THE WORLD 



Showing the 



PRINCIPAL VOLCANOES, 



SEISMIC AREAS AND CORAL REEFS ; 



Also .the Regions of 



ELEVATION AND SUBSIDENCE OF THE LAND SURFAUEi 



Purple indicates Regions of Elevation now proceeding. 

 Green " " " S^tbsidence " " 



Red " Seismic Areas. 



The deeper color shoics Precis of more frequent and intense disturbance. 

 + -Active Volcanoes, or presumed such within historic periods, 

 Extinct Volcanoes. 



. Coral Reefs 



57 Longitud 



e ill 



ANTARCTIC ClHCtt ' 



from 137 Washington 1^7 East 



