194 ART. 2. — B. KOTO : 



we now see in onr present area only along the bay of Yöng-il 

 on the east coast or coast. (See p. 93). 



The basement of the Tertiary is felsophyre and crystal-por- 

 phyry which are superimposed by a series of gravel beds of 

 dark-coloured felsophyre and the cream-coloured tuffite, the latter 

 both stratified and unstratified. The stratified bed entombs plant 

 remains. The series is discordantly covered by sandy beds con- 

 taining poor lignite, which is in turn covered by black sheets of 

 basalt '' on which stands the eumncii of Chyang-gi. From the fossil 

 bones, bivalves and plant- impressions in the stratified fossil bed, 

 Mr. Yabe considers the complex to be of the Phocene age ''\ 



In passing, I should mention the fact that at the south 

 of Chyang-gi, the fragments of typical basalt are found in 

 unstratified tuffite which consists of a half-decomposed felsitic 

 groundmass of felsophja-e. From the occnrrence of basalt blocks 

 in the Tertiary it is safe to infer that the eruption of the basic 

 effusive had already begun during Tertiary period, and I wish 

 to lay stress on this point, as our Japanese colleagues usually 

 shift the time of its outpouring to a later period. 



VIII. The Cbihiviu77i 



Korea is a land of granite, but on the other hand it is 

 characterized by the absence of typical Diluvium either marine 

 or subaerial. In this respect it differs from eastern Japan, but 

 resembles the northern part of China. The peninsula together 

 with a part of China has remained in the continental period 



1) I thought it was basalt; but from the specimen brought back by Inouyc, I now see it 

 is a black felsophyre. It requires, however, further proof. See ante, pages 95 and 96, 



2) See ante, page 94. 



