PLATE XXXI. 



Fig. 1. — Tlie feiTj of Hyüu-phung (;è M' whence we looked bfickwards 

 toAVfird Knöl-plio (PI. XXX. fig. 3). This photo represents the 

 typical scenic aspect of the Nak-toug-gang while draining the 

 hilly land of the Upper Kyong-sang formation. It is a mature 

 river. See page 132. 



Fig. 2. — The eumnai of Hyön-phuiig in the terraue of the "black shale 

 series " at the Avestern foot of tlie granitic Mt. Pi-senl-san (p. 132). 



Fig. 3. — The general view of the hilly land of the Nak-tong-gang region 

 from a hill-top on the east bank north of the eumnai of Chhyang- 

 nyöng (cfr. XVIII. fig. 3, pp. 32, 133). 



