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PRELIMINARY NOTES ON THE GEOLOGY 

 OF JAPANESE SAKHALIN.=== 



BY 



Kotoka Jimbö. 



The island of Sakhalin, which lies to the north of the larger island Hokkaido, 

 is about 900 km. in length but less than 160 in the greatest width. The following 

 brief note was written principally after my own observations in 1906 and 1907. and 

 after the knowledge gained by the geologists, Mr. KAWASAKI and Mr. Katay.\ma, 

 and by the two 3'oung students of the Imperial University of Tök\-ö, ^lessrs. 

 Shimotomai and Murata. 



The general report, (147 pages, in Japanese), on the mineral resources of 

 Sakhalin,t written in 1907 by Kawasaki. Chief Geologist to the Japanese Civil 

 Administration of the island, contains a geological map compiled by him, a general 

 topograpliical and geological sketch, and also his observations on the northern half. 

 Besides, this work includes observations made by Katayama in the south, and my 

 own on the greater part of the boundary' line of the 50th. Parallel and on the river 

 Poronai ; also numerous maps, profiles, views, and so forth. 



^// is to be remembered that zvhere, in this paper, the tvord " Sakhalin " 

 occurs, it uieans only that part of the island which belongs to Japan, 

 while the expression " Island of Sakhalin " is used for its zuhole. In 

 tJie present paper, the transliteration of place-natnes was made as 

 exact as possible, such precaution being made, however, not to render 

 them so scientific as to appear foreign-soundijig. The consonants 

 are to be pronounced as in ordinary English spellitig ami the vozvels 

 as in Italian. TJiis simple ride was adopted in our Romanisation 

 of Japanese and Ainu zcords. The Russian yz is rendered by kh, 

 and the u by y, while the sound like the Gennan umlaut of o is 

 also written with Ö. 



[Tians. Sap. Xat. Hist. Soc. Yol. U. 1908.] 



