NO. 13 SALINITY OF PACIFIC SURFACE WATER— CLARK 23 



shima Gulf much loss, while within Kagoshima Gulf we found the 

 water comparable to thai in Toyama Bay, though only one observa- 

 tion (1.0239) was taken. 



In van Dieman Strait and along the coast to the Inland Sea the 

 same density (1.0261) was found as near Waijima and generalh 

 in the eastern part of the Sea of Japan. 



The two observations in the Inland Sea showed a water of low 

 salinity I 1.0241) ; but south of the l\ii channel we found again ap- 

 proximately the same salinity as that normal for the Japanese cur- 

 rent ( 1.0259). 



Tn the little land-locked harbor of Oshima-Ko the water was quite 

 fresh (1.0238). while in the vicinity of that harbor and south oi 

 Hamamatsu we found it somewhat less -aline than in the Japanese 

 current ( 1.0257 ). 



Near No-Shima the salinity rose to 1.0259, an< ^ on our journey 

 northward along the east coast of Japan to the Strait of Tsugaru 

 we found the density varying between 1.0252 and 1.0258. with an 

 av< rage of 1.0255. 



In lwanai Bay and in Ishikan Bay on the west coast of Yezo, and 

 west of Rebunshiri Island and southern Sakhalin, the salinity was 

 comparatively high ( 1.0258), dropping further to the northward in 

 the eastern part of the Gulf of Tartary to 1.0256. Our single ob- 

 servation in Aniva Bay in southern Sakhalin gave [.0245, while oft 

 Cape Siretoko we found 1.0243. Between Cape Siretoko and Cape 

 Patience the salinity varied between I.0243 and 1.0227. the average 

 being 1.0235, an( l on our course between Cape 1 'alienee and the 

 southeastern corner of the Sea of Okhotsk it rose regularly through 

 I.0239, 1.0245 and 1.0247 to I.0256 and 1.0255, falling to I.0253 

 south of Kunashir and south of Otsu-Saki, and to 1.0252 off Cape 

 Yerimo. Oft Urakawa and west of Urakawa we found a salinity 

 of 1.0258, southeast of Mororan to Sendai a salinity of 1.0254, while 

 another observation off Sendai gave 1.0250. Northeast of Choshi 

 we found a salinity of 1.0240, and in the vicinity of No-Shima a 

 salinity of 1.0255. 



As was to be expected the water in Suruga Gulf proved to be 

 less saline than that of the open sea. especiall) in the more remote 

 portions, varying from [.0236 to [.0256, with an average of 1.0250; 

 off shore in this region we found 1.0250. 



West of Xii Jima we found a salinity of 1.0254. and in Sagami 

 Bay our two observations gave 1.0253. 



