124 ART. 2. — B. KOTO : 



of the complex. A stream with a deep channel rnns along the 

 strike m the conglomerate. 



Near Yoiuj-dam, however, sheared eye-gneiss again makes 

 its appearance, and is followed by coarse-lamellar ortho-biotite- 

 <^neiss, associated with a little calcareons, chloritic sericite- 

 plagioclase-schist, the latter being a mylonitized basic dyke rock. 

 The sedimentary complex has here a breadth of only six kilo- 

 meters. The stretch between Yong-dam and Kewn-san^^ which 

 lies to the north is mainly occupied by a gneiss-granite, but 4 lin 

 before reaching the latter place an ironglance-mica-schist of the 

 appearance of a certain glaucophane- schist Avas seen (PL XXVIII. 

 fig. 3). It consists of sheared quartz with sillimanite fibers, 

 besides opaque ironglance and silvery sericite. The mode of 

 recurrence of this para-mica-schist is unknown. The eiimnäl, 

 Keum-san, itself lies on a porphyritic masanite. 



Leaving details to my Fourth Traverse, I shall now follow 

 Mr. Yabk's route eastwards to Mu-jgu, encountering first the 

 gneiss-granite and then a coarse-lamellar biotite-gneiss as far as 

 the eumnäl. In Mr. Yabe's collection there is found from the 

 last locality an adinole-like rock consisting of chlorite and seri- 

 cite in microcrystalline mass. Its geological relation is not 

 clear. At Mu-jgv, a porphyritic masanite is found capped with 

 red, calcareous hißte and red fehofhi/re, together with sand- 

 stone and conglomerate, and having the slow south-west dip. 

 The ancient citadel of the eiimnäi is on the upper flat surround- 

 ed by steep chffs, thus suggesting the red skirt of a dress (PL 

 XXVIII. ßg. 4) ; hence the name CJigöl--sang-mn '', or " Mt Eed 

 8kirt." It looks like the butte of the western United States. 



1) a.?. Uj 

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