24 ART. 1,— B. KOTÔ 



ogical literature, arid granite and other eruptives are apt to seek their 

 way to such geologically weak points. 



i. Hoang-chhi Ridge. — This begins probably at Phyöng-san- 

 pho !) in Nam-häi Island 2) in the Southern Archipelago, and passing 

 the narrow channel of No-ryang 3) to the peninsula proceeds north- 

 wards through the passes of Hoang-chhi 4) west of Chin-jyu 5) , Chhyöng- 

 mori-kokai 6) (360 m.) east of San-chhyöng 7) , then Koan-bin 8) (750 m.) 

 west of Ko-ryöng 9) , terminating in the isolated castle mount of Keuni- 

 mu 10) . It is the easternmost of the members, marking the boundary of 

 gneiss-granite and the Permo-Triassic formation. 



The scarp is no doubt due to faulting, the dislodged part of gneiss 

 dipping against the wall, as in the case of the roastal ridge of 

 the Thai-Päik-san. Though not a very high ridge, yet its sharp 

 escarpment is clearly visible from the top of Chhyöng-mÖri-kokäi. 

 The wall-like precipice beyond the rolling hills (on an average 

 70 meters) of the Permo-Triassic region seen from the east bank of 

 the Nak-tong Gang, is the one we have just traced. It is the land- 

 mark of this region. 



ii. The Phal-hyong-chhi Ridge 11 *. — Next to and lying to the west 

 of the preceding, the ridge runs through the small peninsula of 

 Yö-syu 12) , the Pan-syöng pass 13) and the grotesque Ok-kul-bong ,4) , of 

 Koang-yang 15) . Beyond the Syom-jin Gang 16 -* it enters the highest 

 Chiri-san 17) , then the Phal-hyöng-chhi pass (430 m.), Hoang-syok- 



1) ^Oiîfô- 2) $$$. :s) mm 



4) Hoang-chhi or Hoang-tai-chhi (^IllJ- or 5Ï;Mi3f), -SO m. high. 



5) &)]]■ 6) XtPJl- 7) LLjfé. 



8) « 9) &m. <10) &i£LÜ$. 



ii) AHMB L2) MK 13) 33tä«ü. 



h) it.® s- i5) ». m 



17) ®m\Ü 



