MAY 22-25 
1904 
MAY, 21-25 
600 
Fig. 108—111. Sognefjord section, 1901—1904. Vide text. 
From HEeLLAND-HANSEN and NANSEN. 
Fig. 112 shows the fluctuations 
in temperature of the Atlantic 
current, as compared with the 
amount of liver and roe found 
in Lofoten skrei. The writers 
found that a certain relation was 
here apparent, a high average 
temperature in the Sognefjord 
section corresponding to a low 
percentage of liver and roe at Lo- 
foten in the following year, whereas 
a high average temperature in 
the Lofoten section was accom- 
panied by a low percentage of 
liver in the Lofoten skrei the 
same year. This is explained by 
the intervening distance, the At- 
lantic water bemg supposed to 
take about a year to shift from the 
Sognefjord section to the Lofoten 
section, so that the conditions pre- 
vailing in the southern region 
should not make themselves ap- 
parent in the northern water until 
some twelve months later. The 
fluctuations in the quality of the 
fish are for both regions presumed 
to be due to variations of tempera- 
ture in the ocean currents. 
In addition to this, the same 
writers are of opinion that the 
quantity of the yield is also de- 
pendent upon the temperature, 
which they explain in the fol- 
lowing manner: The writers 
presume, in the first place, that 
a certain relation exists between 
the quantity of roe in Lofoten 
fish in any one year and the 
yield of subsequent years. The 
usual age of the Lofoten skrei, 
according to previous investig- 
ations made by Damas, being 
taken as from 7—12 years, and 
that of the Finmark fish at about 
