8 ART. S. H. YABE. 



along tlie road ; they are intercalated in a complex consisting of 

 alternations of shales and sandstones, the latter of which often 

 pass into a conglomerate, which is nnderlaid by marly shales 

 and hard sandstones. Some of these underlying sandstones are 

 coarse grained, and in one of them was found a large impression 

 of a fern frond, which, liowever, is too badly preserved for de- 

 termination. Marl nodnles, rarely with Foraminifera, are found 

 in the sandstones. In the coaly shales themselves and in the 

 intercalated shales, vegetable remains are everywhere found, but 

 either as indistinct impressions or as small fragments ; among 

 tlie former we find sometimes crowded impressions of Nilssonia, 

 and in one of the latter abundant fragments of Onychiopsis 

 were also observed. A locality for better preserved plants is 

 in a valley at the eastern flank of the hill above alluded to, 

 where a shale of a dark brown colour is very rich in fossils. 

 This locality promises to yield an abundant harvest to future 

 collectors. 



The fossil flora, so far as the number of species is concerned, 

 must be called a poor one, although some of the species are rich 

 in individuals. It contains certain forms by means of which it 

 is possible to determine with approximate accuracy the age of 

 the strata in which they occur. There is no doubt that the 

 flora is of the middle Mesozoic age ;^^ it is therefore of considerable 

 value, not only for the determination of the probable age of the 



]) Once, Mr. Y. Ishii suspected tliat the coal-bearing deposit near Phyöng-yang 

 belonged to the Cretaceous age, tliougli, as he said, there was neitiier palteontological nor 

 stratigrapliical data for confirming such an opinion. ]\Iore lately, Biiüno Knochenhauer 

 has said " Kretacische Gebilde treten nur inselformig an der Oslküste auf" (Korea, p. Ill, 

 1909) ; but how he came to speak of the Cretaceous deposits, it is not known. 



E. V. AiiNERT also reported the occurrence of a Jurassic coal-bearing deposit in an 

 area along the middle course of the Tu-man-gang and its left braiicli the Bololiotung (/(Q 



