32 



BJØRN HELLAND-HANSEN AND FRIDTJOF NANSEN. 



M.-N. Kl. 



100 



zoo 



300 



WO 



500 



600 



700 



800 



900 



1000 



1100 



1200 



The mean 

 temperature of 

 Makaroft"s two 

 stations was 

 thus 0.34*^ C. 

 higher than 

 s Stat. 64. This 

 fairly well with what 

 was found above, viz. that the 

 water of the current in 19 lo 

 was 1.34^ C. warmer than in 

 1900, and 1.06° C. warmer than 

 in 1899. 

 The section through Mohn's Stats. 306, 

 308, and 314 of July 21st and 22nd, 1878 

 (Fig. 21, M 306, M 308, M 314) is in the 

 same region as Isachsen's Sect. I (vStats. 2, 

 3 and 4). The vertical temperature-curves 

 of these stations are represented in Figs. 23 

 The mean temperature of the 

 water between 50 and 450 metres in 

 Mohn's section (Stats. 306, 308 and 314) 

 is 2.66° C, and at Stats. 2, 3, and 4 of 

 Isachsen's Section, 3.14'^ C. ; if Stat. 5 be also taken it 

 is 3.15^ C. As the observations at Isachsen's stations 

 were taken 27 days earlier in the season than those at 

 Mohn's stations, the mean temperature should be in- 

 creased to 3.41 ^ C. in order to be comparable with that 

 of Mohn's section. The waters of the current should 

 accordingly have been about 0.75'^ C. colder in 1878 

 than in 191 o, in this region. 



