CRUISES OF THE "MICHAEL SARS 



107 



mainly consisted of true "boreal" plankton, that is to say, 

 animal forms which we were accustomed to get in the so-called 

 extension of the Gulf Stream in the Norwegian Sea right up 

 to the very shores of Spitsbergen. There was the amphipod 

 Etitheinisto, the copepod Eiichceta, and " whale's food " (the 

 pteropod Clione Iwiacina), large quantities of which are met with 

 from time to time in the waters between Spitsbergen and the 

 north of Norway. This last is not an "arctic" form, that is, it 

 is not associated with polar water in the Norwegian Sea, but 

 on the contrary is found in Atlantic water to the south of Iceland, 



C9 .,, C7 66 





see-s-i 96 



Fig. 93.— Hydrographical Section from the Sargasso Sea to the 



NEWFOrNDI.AM) BAXK. 



according to Danish observations. It seems, however, to be 

 associated with the northern portion of the Adantic and the 

 Atlantic water that enters the Norwegian Sea. These animal 

 forms were entirely absent during the whole of our cruise from 

 the Canary Islands to Station 64, so that their occurrence at 

 Station 66, where lower temperatures were recorded at no great 

 depth beneath the surface, is very significant. 



We fancied now that we had said farewell to the Sargasso 

 Sea and its interesting animal life, but at Stations 67 and 69, in 

 close accordance with the hydrographical conditions depicted in 

 F^g- 93. we came once more across more southerly forms. 



