28 ART. 2. — r.. koto: 



wards, but after crossing a liill-iieck (Pan g -ko gal) southwards to 

 Tol-mit '\ 4 km from the former, it has a northerly inclination, so 

 there must exist s^niclinal beds with an equatorial trough-axis. 



From Tol-mU"\ a narrow strip of rice-field stretches westwards 

 between equatorial ridges (PI. III. fig. 1), the rock being the same 

 as before ; the ■ road goes over the stratification-plane of the 

 marly and flinty rocks which dip slightly southwards as before. 

 The overhanging cliflTs of surrounding ridges, about 300 m high, 

 tell the same story in respect to the nature of the rocks and 

 the mode of their occurrence. Proceeding westwards along the 

 margin of the rice-field {fig. 1) which gradually becomes narrower 

 and higher, we finally came to a running streamlet, coming 

 from the north laden witli abundant cobbles, and the field was 

 strewn throughout with the same gravelf. A steep mountain 

 on the north side presented a deep gray color and its clifi" 

 was full of gravel-talus, partly hidden behind the thin pine- 

 forest. It is rather strange to find groups of trees in this part 

 of Korea. 



At last we arrived at Pong-am^^, and ascended the low pass 



1) ST 



2) Yabé made a side trip of 34 km from Tol-mit to Sä-cbliyön on the south coast along 

 a short country road not marked on any map at my disposal. The first half of his route was 

 in a mountainous region of marly shale and indurated greenish tuft', i)ierced through by fine- 

 granular mnsanite at the Son-dong-chhi. The second half was in a hilly tract of red tuff and 

 green marl, at times conglomérai ic at their bases. A complex of gray sandstone and dark marl was 

 seen on the stretch of denuded hills (60 m) from Sü-chhyün to Chin-jyu, and at the latter city 

 our road joined Yabû's roiite. As will be seen from the descriptive section of my route, our 

 observations concur beyond expectation. The above-mentioned masnnile is the leucocrate named 

 by Löwinson-Lessing the alaskyte. (See ante, y>. 21.) 



The dark marl contains chains of nodules ('2 vm in diameter), which show under the 

 microscope an organic structure of unknown nature. A partial analysis of it made by Mr. B. 

 Kobayashi g.ave 0.31% H.O ; 44.11% CaO ; O.GS9% MgO and a trace of P.O.,. Yabé also 

 found the same nodules in a shale near the post station Nak tong, associated with the plant- 

 bearing bed. 



t See footnote p. 29. 



3) E S 



