PLATE LXXXIII 



CENTIMETERS 



Fig. 1. TYPICAL WEATHERED SURFACE OF KENYTE LAVA 

 SHOWING ANORTHOCLASE CRYSTALS IN RELIEF 



Fig. 2. VIEW SHOWIN(i JOINTING IN KENYTE LAVA 

 NEAR SUNK LAKE, CAPE BARNE 



[To face p. 256 



