Kotô, Korea. 



Jour. Sc. Coll. Vol XIX. Art. I. 11 I. 



Fig. i.— The canyon in the Diamond Mountains. 



Fig. 2.— The Tai-koal-lyöng ridge, running north-south, seen from 



the eastern coast. 



F IG . 3.— Basalt plain of Thyöl-uön, SEEN FROM THE NORTH, LOOKING 

 DOWN THE MESA. 



AUTHOK THOTO. 



COLLOTYPED BY K. OgAwA. 



