Notes on the Geology of the Dependent 

 Isles of Taiwan. 



By 



B. Koto, Ph. D. RigahiJiakushi, 

 Professor of Geology, Science College, Iiiijierial University, Tokyo. 



With Plaies I-V. 



THE HO KO GROUP (PBSCAHOIiBS). 



I. Introductory. 



Between the, geologically neglected, south-east coast of China 

 and Taiwan, the expanse of sea is studded with a great numher 

 of islands, collectively called the Hoko or Pescadores Group. 

 It consists of islands^ islets and rocks, great or small, altogether 

 numbering ô7, besides countless hidden rocks under the water. 

 The waterway on the continental side of the Pescadores is the 

 shallow^ Fokien Strait, only a hundred miles wide, and on the 

 Taiwan side, is the still narrower Hoko Channel, — the only pas- 

 sages which allow free communication to the waters of the de- 



