ON SOME FOSSILS FROM THE ISLANDS OF FORMOSA & RIU-KIU. 



reef-limestones of southern Formosa, occurring at varions altitudes 

 above the sea level forming a compact rock " built up by 

 generations of Zoophytes." 



Several fossils \_Peclen, Oslrea, Luiraria ?, Cardium ?, Ecliino- 

 discus (Amphiojye) bioculalus Agassiz, E. bisperforatus, and ? Crust- 

 acean fragment] found in association with the coal-beds by Mr. 

 David Tyzack, at Kelung, North Formosa, were determined as 

 of Miocene age by Professor G. A. Lebour 1 in 1885. 



Prof. Koto, 2 next, briefly refers to the raised coral reef- 

 limestones of Formosa and Eiü-Kiü, and also recognizes in the 

 latter-named Group a three-fold zonal structure, synonomous with 

 that observed by Prof. E. Suess in the Lesser Antilles: (I) the 

 volcanic belt ; (2) the mountainous islands ; (3) the exterior belt, 

 which comprises the Miocene and Quaternary formations. 



Further, as previously mentioned, the presence of an Orbit- 

 oidal-limestone in the northern part of Formosa was made known 

 by ourselves, rather more than twelve months since, after an 

 examination of some microscopical sections of fossiliferous rocks 

 forwarded to us by Professor Koto. From the character of the 

 organisms detected in those sections we were inclined to regard 

 the limestone as of Miocene age. 



In concluding these preliminary observations we desire to 

 express our best acknowledgments to Mr. H. W. Burrows, F.G.S., 

 for the interest he has taken in our work and the help he has 

 afforded us more especially in the preparation of many of those 

 beautiful photographs which adorn our plates. We wish to thank, 

 also, Professor Dr. Koto for the privilege of being allowed to 

 work out this material, our report upon which, we hope, may 



.1. Trans. North England Instit. Min. Engineers Newcn.^lr, 1885. Vol. '.'A, pp. 77-81, etc. 

 •J. Joiirn. Coll. Sei. Imp. Univ. Tokyo, 1899. Vol. XI, Part 2, pp. 90, 98. 



