512 VAST AMOUNT OF SUBSIDENCE chap, xx 



there subsided, and in each atoll a monument over an island 



now lost. We may thus, like unto a geologist who had lived 

 his ten thousand years and kept a record of the passing 



changes, gain some insight into the great system by which 



the surface of this globe has been broken up, and land and 

 water interchanged. 



BIRGOS LATKO, KEELING ISLAND. 



