— 142 — 
nourishment; there can, moreover, be some variation between the different specimens 
taken in one and the same haul. Of 13 cod, all belonging to the sample from Honnings- 
vaag 6th May 1913, and all of 73 cm. length, 
1 weighed 2.4 kg. 
Du) 2.6 » 
Zu) 2.8 » 
iy 2.9 » | the average weight being 
3» 3.0 » thus 2.923 ke. 
Thee 3.1 » 
a» 3.2 » 
D 3.4 » 
Still greater variation is naturally found in the 5 em. groups, upon which the calcu- 
lations given in this chapter are based, but as the variations are more or less alike for 
all groups, we can obtain a sufficiently accurate, and far more clear survey of the pro- 
sition by keeping to the average weights for the different groups. 
We will first of all consider the weights of two samples, one of young cod, the other 
of skrei. 
Average weight (whole) in kilos, of cod of different size groups, Barents Sea, 1907. 
15-19 20—24 25-29 30-54 35-39 40—44 45-49 50-54 5559 60—64 
0.04 0.07 0.13 0.24 0.38 0.57 0.82 1.23 1.25 2.09 
The small cod, under 40 cm., which are rarely taken by the lines, are thus all seen 
to weigh less than half a kilo, (one pound), their weight increases, however, almost two- 
fold from one 5 cm. group to the other. The sizes of principal importance in the Finmark 
loddefisk stock, viz, from 50—64 cm., lie between the whole weights of 1 and 2 kilos. 
Proceeding to consideration of the skrei, we find the following figures: 
Average weight (whole) in kilos. of skrei of different size groups, Rest 1913. 
55-59 60-64 65-69 70-74 75-79 80-84 85-89 90-94 95-99 100-104 105-109 110-114 115-19 
1 LG he SEL OI SOOT 124 1 
The fish here increase in weight by about 1 kilo for each 5 cm. of size from 65—69 
to 85cm, later by between 1 and 2 kilos for each 5 em. group. From 65 to 112 cm., the 
weight increases from 2 to 13 kilos, or more than sixfold. First in importance are na- 
turally those groups which are most numerously represented in the stock, from 65—89, 
and which cover a field of from about 2 to about 5kg. average weight. 
It is very interesting to note how the weight increases with age. As we have already 
seen (vide pag. 130), the average length of the cod in the Barents Sea was as follows 
according to catches by: 
Finemeshed trawl Long-lines. 
ln 2a 384 En 54 6% 7% 8% 9% 10% years 
I 219 wl SO 52.4 56.3 62.2 66.2 73.9 80.1 cm. 
