OCEANOGRAPHY 



411 



is divided into two parts at Station 10, on the Porcupine Bank, 

 south-west of Ireland. The eastern part, between Stations 1 and 10, 

 extends over to the bank south of Ireland, while the three stations 

 of the western part lie in the deep sea west of the Porcupine Bank. 



Fig. 2.— The "Fram's" Route from June 20 to July 7, 1910 (given 

 in an unbroken line the figures denote the stations). 



The dotted line gives the Frithjof's route, and the squares give five of the 



Michael Sars's stations. 



In both parts of this section there are, as shown in Fig. 3, two 

 great volumes of water, from the surface down to depths greater 

 than 500 metres, which have salinities between 35 "4 and 35 5 per 



