Mr. Kenzo Wada, in his " Report of Reconnaissance of the Fisheries in 

 SakhaHn ", 1907, (184 pages, with numerous maps, diagrams, and views, all in 

 Japanese), gave in the introductory notes, descriptions of the coast Hne, the sea- 

 bottom, the meteorological conditions, and the oceanic currents of the island. 



The Strait of Soya or La Perouse, is regarded by our zoologists as an im- 

 portant line, showing the presence of very different faunas on both sides of it. 



The main fields of my geological observations in Sakhalin were (i) the 

 mountains between Dubki and Chipesani, (2) the eastern coast of the island 

 Kaibato, also called Todojima, Todomoshiri, or Moneron Island, (3) several places 

 on the Avest coast of the main island, (4) the boundary region of the 50th. Parallel, 

 (5) the m.ain course of the river Poronai, and (6) the coast-line from Shitka to 

 Dubki. Those parts of Sakhalin, for which I must make use of observations by 

 other eyes, are chiefly (j) the greater part of the west coast, (2) the greater part 

 of the coast of Aniwa bay, (3) the coast-line from Cape Shiretoko (called Jüzö-zaki 

 after the Russo-Japanese war; to Tunnaicha, (4) the greater part of the coast-line 

 from the river-mouth of the Poronai, round Cape Patience (Mys Terpyeniya in 

 Russian, Shinnoshiretoko in Ainu, and Xataokazaki again in our new nomenclature) 

 as far as Taodo on the east coast, besides the inland routes taken by Katayama or 

 Kawasaki's parties. These routes are (i) on the Tokuso mountain in the North- 

 eastern Mountain-land,* (2) on the river Xokoro "(whose watercourse was actually 

 found to be a very short one, with its source far to the south of the 50th. Parallel), 

 (3) on the rivers Khoi and Nayashi, (4) on the rivers Esturu and Shiruturu, (5) 

 on the rivers Naibuchi and Tomanai, (6) on the Uriu river on Aniwa bay, besides 

 in other places. 



I must here express my most cordial thanks to Mr. KUMAGAYA of the Civil 

 Administration and to Mr. OSHIMA of the Boundary Commission for rendering me 

 many travelling facilities, but the name of the old savant of St. Petersburg, the 

 Academician, Mr. P^REDERICK BOGDANOVITCH SCHMIDT, must be specially 

 mentioned. He was in the island of Sakhalin about nine months altogether in 

 1860-61, and visited several places in this land. His companion, Gleiin, was 

 there about twenty months in 1860-62. They brought to Europe a good collection 

 of fossils, mostly Tertiary, which Mr. SCHMIDT kindly allowed me, during my stay 

 in St. Petersburg of a month and a half, to compare with similar fossils in my 

 collection from Hokkaido and with recent shells from northern seas, preserved in 

 the zoological museum of the Academy of Sciences in the town. His list of pre- 

 liminary determination of the Tertiary fossils from the island of Sakhalin, then not 



* See p. 4. 



