PLATE IV. 



Compiled mainly from the manuscript geologic map by Dr. K. 

 NAKASHi:srA, with slight modifications suggested by the map appended to 

 Messers. Iki and Suzuki's "Report on the Mineral Resources of Hoang- 

 hâi-Do, Kyöng-sang-Do, Kyöng-geui-Do, South Chhyung-chhyöng-Do, and 

 the Southern Part of South Pliyöng-an-Do " (in Japanese). 



