JOUEKEYS THROUHH KORFA. (j?> 



After a boat-ride of 8 bn between islets of tiie same por- 

 phyrite, which everywhere dotted the shallow water, I at last 

 landed at the open port of Mok-pho (PL IX. ßg. o) on February 

 16th, 1901, tlms ending my first traverse of the Korean 

 peninsula. 



Azotes on the- Geology of the Traet bettvcoi Mok-pho and 

 Sun-eJiJiyaiig via Naiii-py y'ong, Tong-pok, ami OJ^-icoa 



Supplementaiy to the diary of my first traverse, I here put on 

 record observations made by Messrs. K. Inouye and N. Yabe, who, 

 independently of my journey, and at a later time, went through 

 the region lying between my first and second traverses, and who 

 have been so kind as to let me look through their specimens of 

 rocks and road -sketches. 



Proceeding from Mok-pho along the north margin of the cove 

 of the same name on the hilly terrane of red orthoclase-porphy- 

 ry for 20 hn, Mr. Inouye found a greenish quartz- bearing porphy- 

 rite at the last point ^^ with phenocrysts of plagioclase besides 

 rounded quartz fringed with needles of augite after the manner of 

 quartz in quartz -basalt, the origin of which has been much discussed 

 of late by petrologists. The groundmass consists of feldspar-micro- 

 lites in fluidal arrangement, and the interstices of the microlites 

 are filled with chloritic matter which gives to the rock a gree- 

 nish tinge. 



At the mouth of the Yöng-san-f/ang river, a remarkable 



1) Song-san (^J \U). 



