THE GREAT ERUPTION OF SAKURA-JIMA IN 1914. 27 



landed on the spot prior to the recent eruption, informed the 

 writer that the islet is built up of trachybasciH (PI. XVI. Fig. 4), 

 as is the southerly-lying Oki-kojima, representing an effusive 

 (Ai in Fig. 3) of the Plateau Formation. The writer received 

 later a few chii)s of an odd specimen from the buried islet 

 through the kindness of Mr. M. Uykda, who collected it many 

 years ago. It is a dark-gvay crystalline trachybasalt of exactly 

 the same type as that found in Oki-kojima, representing a certain 

 horizon of the Plateau Formation, as the writer expected it to be 

 (see page 25). It is incredible from a geological standpoint, that 

 the islet welled out in one of the years 1475, 1476 or ? 1750, as 

 recorded in some old documents, which were accepted with blind 

 faith by nearly all the recent writers on Sakura-jima, nor is it 

 by any means a parasitic cone, as some assume it to be {see p. 42.) 

 kan-zé 4) Kanze.^' — A low sandy hoolc (PL III. Fig. 1 ; 



PI. XII. Fig. 3) in the channel between the city of Kagoshima 

 and Sakura-jima, and lying to the south by southwest of the 

 lava -drowned Karasu-jima. No solid rocks are exposed, and the 

 origin of the islet remains unexplained. Float rocks scattered 

 about are all brought from the neighborhood of the city. Lately, 

 K. Ya:maguchi informed the writer that a solid rock, which 

 probably makes the foundation, was brought up from the sea 

 bottom of the neighborhood, and the specimen is black in color, 

 resembling that which was found in Karasu-jima. PI. XVI. Fig. 4. 

 From the proximity to the last-named and the similarity of the 

 lithologie composition, Kanzé is in all probability of the same type 

 and origin as Karasu-jima. 



K(S¥bu^ ^) Ko-JiMA OF KoKUBu. — A Small group (Figs, ö-ij) of 

 islands, off the railway station of Kokubu, is composed of two 



1) m m 



