s AKT. 2 —S. YOSHTWAKA : 



Pinnacle islandsf and found tlieni to he entirely bastdtic andésite. In 

 Crasr Is. tiie andésite is found in tlie form of lavas, dvkes, ashes and 

 breccias. According to the petrogTaphic examination l)y Prof, Koto, 

 Agincourt Is. has hypersthene-basalt and hyperstliene-andesite. 



As to the ireolosfv of Formosa we have a nundjer of notes. Ihe 

 coal-mines are mentioned in the following: — 



Gordon, Observations on Coal in the X.K. ])art of the Island of 

 Formosa— JoH/-//a/ AV>//. (letyji: Soc, \o\ XTX, 1.S49, p. 22). 

 Jones, tie port made to Commodore Perry of :i visit to the Coal 

 Regions of the Island of Formosa. — Narrative of the Exped. 

 of :ni Amer. Squadron to the China Seas and Japan &c. 

 Vo\. II, 18,')(;, p. 158. 

 Tyzack, Xotes on the (.'oal-tield and Coid-mining Oj^erations in 

 X. Formosa. — Trans. Xortli of Eiujl. Institute of Mining (inil 

 Mechanical Enfiineering, Vol. XXXI\ , 1884, p. 67. 

 The geology of the neigliborhood of Köhi and Kiirnn is in 



Kiclithofen, Über den (i«ebir<>:sbau an der Xordkiiste von Formosa. 

 —Zeitschr. Veutsch. GeselL, XII lîand, 18()0, p. 532. 

 The determination of tVie age of the sediments of the neighborhood of 

 Kiirnn, by the fossils collected by Tvz;ick, is found in 



T.ebonr, Xotes on some Fossils from X. Formosa. — Trans. Nortli 



of Engl. Institute of Mining and Mechanical Engineering. A'ol. 



XXXIV, 1SS4, p. (w. 



The principal facts gathered from these authors are as follows : 



There are, besides the F.iassic deposit, tw(i Tertiary formations, probably 



different in age. The older one with characteristic Echinodiscus is 



Miocene, and consists of a bluish shale, with clay and finegrained 



brownish sandstone. Coal-seams, especially those near Kiirnn, appear 



to extend from east to west. Fossils found near Hokuto are Ostrea, 



t SI^?1'MAêSÇSSl!AI (Tfeport on a Trip to the uninhaliitecl Islands lying off the* coast of 

 Kiirun, ItKK»., in Jnji'iut-sc). 



