48 ART. 2. — B. KOTÔ : 



road loads down a steep deseent, is created by subaerial erosion 

 worked out into tlie core of tliis friable mass. 



Seen from tlie top of the Pid-chlil, we observed a sud- 

 den change in topography from the hilly tract we had al- 

 ready pass€Hl over, to rather rough mountains on the west, 

 but our view of them was at the time obscured by the hail 

 storms wliich we unhappily experienced daily till our arrival 

 at Mok-pho. From an inspection of the geologic map it was 

 easy to understand the change of land -features ; for here we 

 were on the southern prolongation of the axis of the Chiri- 

 san massive, the backbone of South Korea. The peninsula of 

 Heunri-yaiuj '^ o\\ tlie south seemed to me to bo the continuation 

 of this axis. Of what rock and formation it is composed I am 

 up to the present entirely ignorant. The small land projection 

 may be the terrane of eye-gneiss or the Ful-chhl granite. I 

 have two chips collected by Mr. T. Saito, of our Hydrographical 

 Bureau, one from Piil-l:ai-jin '' at its southern extremit3% and the 

 other from an islet near by called Chi-orl'^\ The former is a 

 muscovite schist of line-lamellar texture with abundant musco- 

 vite and a little (]uartz, the latter being highly granulated by 

 mechanical action. The rock from CJii-ori is a splierulite-porphy- 

 ry with the appearance of claystone-porphyry. The general 

 mass consists of minute radial aggregates in which microporphy- 

 ritic crystals of orthoclase are found imbedded. From our 

 fragmentary knowledge nothing positive can be said of the 

 geology of the pi-omontory of Hcunfi-i/anfi. 



Nak-ax From ]~troverty-stricken Xah-an to the prospercnis Po-s'ông'", 



1) « RS 2) it fi tM 3) :i 31 M B 4) g JÖJ 5) îg # 



