74 AET 2. — B. KOTO : 



to the eumnäi, crushed hiotUc-gnmite was seen cropping out from 

 imdernecdli the felsophyre into whicli it intrudes. 



From liere towards tlie east the view (PL XI. Jig. 3) is open, 

 and we looked down the fertile expanse of Na-jiju, 18 hn wide, 

 skirted on the east by the precipitous porphyrite mountain, Mu- 

 ieimg-san^^ of Koang-jyii with foothills of granite, stretching in 

 a meridional direction. 



na-jïu The eumnäi (30 m) of Na-jyu is of superior rank as com- 



pared with other eumnais, being in the shape of a square 

 surrounded b}' a stone-wall of massive granite blocks solidly 

 cemented togetlier. The official buildings are comparatively large, 

 but leer. Much of the space within the wall is left unoccupied. 

 The people are dispirited and silent. The whole air is that of 

 a place empty and vacant in consequence of sufferings from tlie 

 Tong-ak rebehion that liappened just before the Sino-Japanese war. 

 The neighborhood is said to be the residence of nobles (yang- 

 han) belonging to the Im-ga"^ family. 



Thence our path led across paddy fields for 4 hn from Na-jyu 

 in a northeasterly direction, and then on eroded red hills of coarse 

 granitic masanite, wliich under tlie microscope shows distinct traces 

 of having been subjected to great stress. We finally descended 

 to a narrow Alluvial flat and took the ferry over the Yöng-san- 

 gang river to Sö-chhang'^\ Tliencc onwards to the last hill-pass 

 to Koang-Jyu, we found greenish porphyrites of flinty, tufaceous, 

 and massive textures, the last two often alternating, and with an 

 easterly dip. All the rocks irrespective of textures weather into 

 red earth. At the last hill-pass *\ biotite-granite is found intrusive 



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y) ÎS jT 4) ig a 111$ 



