PLATE XX. 



Fig. 1. — Tlie sandy somewhat sterile plain east of Tai-ku (PL XIX). On 

 tlie east a sharp meridional ridge o£ tlie ' flinty tnffite series ' runs 

 along the distant horizon, and to the left at the foot of a spur 

 of the hill is the cumndi of Ha-yang ([pj |^) in the direction of 

 Yöiig-chhyön (p. 91). 



Fig. 2. — The thriving eumncd of Yöng-chyön in a depression in the * black 

 shale series ' occasionally interstratified with sandstone layers which 

 become almost horizontal as we go up eastwards along a fork of 

 a river to the granite pass of the Chhyöug-gj^öng-chhi {\^ ^- jlr^), 

 150 III high, which is the northern prolongation of the ridge start- 

 ing from near the free port of Fusan (p. 92). 



Fig. o. — View eastwards from the foot of the Chhyöug-gyÖDg-chhi, show- 

 ing before us in the distance beyond the plain of An-gang (^ ^) 

 the meridional coastal ridge of the ' black series.' On the other 

 side is the Tertiary ]>ay oi Y(")ng-il of the Japan Sea (p. 92). Civ. 

 ri. XXL fig. :î. 



