MARINE ALGAL VEGETATION 37 



in Stykkisholmur. A comparison of these two places is, however, 

 not equivalent to a comparison between E. Iceland and SW. Iceland, 

 the situation of the stations being quite different. Papey is an island 

 lying isolated in the ocean; Stykkisholmur, on the other hand, is 

 a good example of the thermal conditions existing in the calm fjords. 

 Regarding the temperature at various depths in the interior of 

 the fjords some observations are to hand made during the summer. 

 These are, however, too few and scattered to be given in mean 

 values. I give, therefore, as an example, some actual measurements 

 from different parts of the coast of Iceland. 



In East Iceland the measurements of temperature w r ere car- 

 ried out on board the Survey vessel "Diana" (Fisheries' Report 

 ("Fiskeri-Beretning") for the financial year 18991900), and of these 

 the following are given : 



Depth in fathoms Temp. (C) 



Hellisfjordur ( 19 /5) : . . . 1.7 



10 1.6 



Ladmundarfjordur ( 7 /e) 5.0 



cir. 33 1.5 



Bakkafjordur ( 18 / 6 ) 8.0 



7 2.5 



Vopnafjor6ur ( 2 %) 4.5 



13 J /2 1.8 



Finnafjordur ( 17 e) 3.8 



8V2 2.4 



Finnafjordur ( 18 /?) 6.5 



5 6.3 



Breiodalsvik ( 16 /s) 4.6 



Bottom 4.3 



The low bottom-temperature in June is probably due to the 

 East Iceland polar current. 



In addition to these Ssemundsson 1 has published the fol- 

 lowing measurements of the temperature and salinity of the surface 

 of the fjords in East Iceland. 



Temp, of the Salinity 

 surface (G) /oo ' 



Djupivogur ( 15 8; 9.0 29.47 high-water. 



7.4 33.14 low-water. 



Faskruu-sfjoro-ur 19 /s). . 10.0 33.67 at Bu6ir. 



9.5 32.23 at Mjoeyri. 



9.4 33.54 at Brimnes. 



9.0 32.19 at Hofoi. 



i.. 7.0 34.71 at Kolfreyjusstadur. 



1 Bjarni Ssemundsson. Fiskirannsoknir. 1898, Andvari, XXIV arg. 



