(lEOLOGIC STRUOTURK OF THE RIUKIU OURVE. ]] 



coal-seams, their relations, and various pr<jfiles of Tertiary rocks. 



All the above works have been specially consulted in writing this 

 paper. Tliere are, besides, notes by the foreign writers. Corner, 

 Guppy, iîeazele}^ and Klein Wächter, giving the results of their obser- 

 vations chiefly in the region soutli of Takao; also the reports by the 

 Japanese geologists, Prof. Kotn, and Messrs. Ishii, Inoue and Saitö. 

 In Prof. Koto's work,* there are very valuable petrographical notes 

 on the Höko group and the Kwashû and Koto islands. Mr. S. Yama- 

 saki, who has travelled with Prof. Koto, has also written about our 

 present knowledge of the island in '' I'eti'niKdin's Mitt]ieihm(fen, XLA'l 

 Band, 1900, X, p. 22." § Prof. J. Pein also spoke I upon the same 

 subject at the 'Xiederrheinischen (Tesellschaft für Xaturkunde zu 

 Bonn.' 



PART III.— Geology of the Islands in 

 the Riukiu Curve. 



The Piukiu Curve consists (^fmany groups of islands. Counting 

 from the southern end, we have those of Saki-shima, Okinawa and 

 Oshima; then a row of small islands, collectively called Tokara and 

 lying on the north-west of Oshima; and hnally the Osumi group with 

 a few islands (such Jis Yaku-shima and Tanega-shima) between Tokara 

 and Kyüshü. 



I. THE OSHIMA GROUP. 



This group includes Oshima, Avith its numerous dependent islets, 

 Kakeroma-jima, Edato-jima, Ikeji-jima, Yoro-jima, Sukomo-banare, 



* Notes on the Geology of the dependeut Isles of Taiwan. --Jo«c. Coll. Sei. Imj). Um\, Tokyo, 

 Vol. XIII, Part. I, 1899, p. 1. 



§ XJeber geographischen Kenntnisse von der Insel Taiwan (Formosa). 



X Die physische Geographie von Taiwan (Formosa). — SUzioifi-thericlite der Xiederrlwiitisclien 

 Gessell.filr NaUtr-itud Heilkunde zu lioiin, 1900, I Heft, p. A. 21. 



