OCEAN CURRENTS 



189 



of the Atlantic. Probably the icebergs seen by James Ross in 

 1836 in 61° N. and 6° W. came from this current. At any 

 rate, the current produces a tongue of cold water of low 

 salinity (under 34) north of the Faroes (Fig. 40). 



Between this water and that of the Florida Current (over 



Fig. 40. — Surface Currents and Salixities at 150 Fathoms in the 

 NoRWEGiAN Sea. (Hellaxd-H.ansex axd Naxsen.) 



35 salinity) there is a body of mixed water (between 35 and 34 

 salinity) with varying and often whirlpool circulation. 



The distribution of this water probably varies from year to 

 year, certainly the extent of the cold tongue varies ; the figure 

 shows the average conditions during igoo-1904. According 

 to the biologists, the chief species of Copepod characteristic of 

 the différent masses of water is for the east part of the cold 

 tongue Calaniis hyperboreus ; for the mixed water CaJanus 



