112 



HYDROGRAPHY. 



is, however, that upon the whole these isohalines exist, for the position of them 

 proves that the water of the least salinity appears in the middle of the section. 



It is only in a small degree that the isotherms follow the isohalines. The measurings at 

 station n— 12 showed, however, that station 12, at a depth of 200 fathoms (377) and 300 fathoms 

 (565 metre), has a higher temperature than station 1 1 ; from this the inference may be drawn that the 

 temperature as well as the salinity is growing in a westerly direction. 



It has to be mentioned here that all the stations in section X are from measurings in 1895, 

 while the measurings from both years, 1895 and 1896, will be found in the next section. 



SECTION XI. 



From the Snefjeldsjokel to the westward towards Angmagsalik. 



This section shows in the main points the same state of matters as section X. The isohaline 

 35-25 goes from surface to bottom round station 89. As this station is situated more westerly than 

 station 9, and as, according to what is stated above, we use 35-25 isohalines as the boundary of 

 the Irminger Current, then it will be seen that this current gets a greater breadth, or, to use another 

 terme: that the Irminger Current is increasing in breadth to the northward; 

 35-25 isohalines are again to be fotmd in the western part of this section; here it is, however, drawn 

 on the basis of the same station as in section X, namely station 13. The salinity at station 92 attains 

 nowhere 35-25, but at some depths it is so high that there is every reason to believe in the existence 

 of such a curve; thus it is at a depth of 50 fathoms (94) and 200 fathoms (377 metres) 35-21. Exactly 

 as in section X, the lowest degree of salinity, from the surface to the bottom, is found in the middle 

 of section XI; still it is to be observed that the part of the section whose salinity is less than 35-00, 

 is seen to be considerably smaller in extent than in section X. 



SECTION XII. 



From station 98 (off the north-western part of Iceland) to station 92. 



The isohaline 35-25 stretches still more westerly than in section XI, even past station 95. 

 There is no reason to believe that the Irminger Current should have grown to such a breadth, and I 

 have therefore tried to account for the aforesaid state of matters by quite a different view. 



The greater part of the water in section XII shows, as already mentioned, a high degree of 

 salinity up to station 92 and it has a corresponding high temperature. This warm and salt water is 

 no doubt in connection with the warm and salt water in which stations 12, 13 and 93 are lying. 

 (From the table will be seen that station 93 has a salinity of more than 35-25 from a depth of 50 fa- 

 thoms (94) up to 400 fathoms (753 metres), and a corresponding high temperature. We may therefore 

 take it for granted that water from the Atlantic is running along the East Greenland- 

 Polar Current across the Denmark-Strait in section XII. What is left now, is only to 

 decide in what direction this motion of the water is taking place. 



The Atlantic water must, when it comes into contact with the Polar-water, be cooled succes- 

 sively, and obtain a smaller degree of salinity. Owing to this, it must be taken for granted that the 

 current is setting in the same direction as that, in which temperature and salinity are decreasing. 



