1-26 



Vol. XLIIL, Art. 6. — S Tsnboi 



14 8^1 



JOO 4« 60 Su___IOO 120 }+o l«o. 



100 2oo^ 30« 4O0 50Ö ^°°kln 



Pig. 41. Bathymétrie ma,p of the environs o£ the Idzn islamls. 



Shikineshiina, Koziishima, Miyakejirna, Mikurashima, and Hachijô- 

 jima/-* All of tliese islands are volcanic, and arc grouped by some 

 as belonging to the " Fuji volcanic chain." 



1} ^mm mmm s-^^ wkm A^t^ 



