JOURNEYS THROUGH KOREA. 27 



higher camplex, i.e. masanite and its alhed quartz-feldspar rock 

 capped with tlie sheets of a green eruptive and its derivatives. We 

 now entered a region composed of a geologically older complex, 

 lower in stratigraphical position. 



Chin-hài is a poor stone -walled town at the north head of 

 the bay of the same name, and situated between the rivulet 

 of Thong- chlußn ^^ wliich we had followed down to this point and a 

 nameless streamlet, both draining into tlie bay. The bay or cove 

 is well protected on the east by a rather steep, regular ridge 

 which we had crossed at the Tong-chy'ôn pass already mentioned, 

 and whicli is bounded on the west by a low, hilly sinuating coast 

 dotted with islets. The scenery of the environs is fine. A part 

 of the arm of sea was the place much coveted by the Russians 

 for their naval station to serve as a link between Vladivostock 

 and Port Arthur. The cumnai opens towards the north-west to 

 Ham-an, and thence through a low elevation to the Nak-tong-gang. 



Starting from the eumnai of CJmi-häi, we waded across a Chin-hai^) 

 nameless streamlet to the west bank where we found a new series of 

 black slate alternating with a banded, greenisli-gray and light-yellow, 

 flinty rock. Seen under the microscope, this flinty metamorpliic 

 consists of coaly particles and biotite in the quartz-feldspar mass, the 

 light bandin'g being excessively rich in fine epidote-like granules. 

 The same metamorpliic rock was abundantly seen 50 km north- 

 wards between Yong-san -^ and Chhyang -nyong ^^ on the left bank of 

 the Nak-tong-gang, from wliich I presume that the same rock ex- 

 tends meridionally, as nearly all the other rocks do in Kyong- 

 sang-Do. The metamorpliic rock ^^ at 67^m-//cu' dips shghtly south- 



1) M JH 2) g li! 3) ^ ^ 4) PI. xxxiv. Traverse I. Series No. 2 (sh) in the profile. 



^) mm 



