Of THE NORTH SEA. 
5 
No. 2) 
merits than those recorded in table I have been used at the same station. 
The maps also show all the stations where implements adapted to 
catch the younger age-groups have been in use, while the supplemen¬ 
tary table only shows the stations with positive results. (See also the 
inserted tables a and b, p. 10 and 11). 
The gear. 
The implements used during the cruises were a fine-meshed trawl 
of the same construction as used by the German and Swedish fisher¬ 
men, and a fleet of drift-net composed of a series of nets of greatly 
varying width of mesh. 
The width of mesh in the different parts of the German herring- 
trawl is compared with that of the English herring-trawl as follows: 
German herring trawl. English herring trawl. 
Wings (from knot to knot) 
.... 
4.5 
cm. 
7.0 
cm. 
Square — ,,- 
4.5 
ft 
7.0 
tt 
Baiting —,,- 
4.1 
ft 
3.0 
ft 
Belly - 
3.7 
ft 
3.2 
ft 
Cod-end —„ — 
2.3 
ft 
3.0 
tt 
The drift-nets were as 
follows: 
Sprat net. Width of mesh (from 
knot to knot).... 
1.0 
cm 
it 
it 
tt 
1.2 
tt 
„Loddegarn“ x ) 
t/ 
tt 
1.3 
it 
Nordland fat herring net 
ft 
ft 
2.1 
it 
tt It If 
tt 
tt 
2.2 
it 
It It If 
tt 
2.5 
tt 
Norwegian large — „ — 
ft 
it 
3.1 
it 
The herring trawl is, compared with the nets, of a very coarse 
fabric and the meshes are double-threaded and are thus actually much 
smaller, compared with those of the nets, than is shown by the figures. 
The implements were found to be well suited to the purpose of 
the investigations. The trawl took all size of the herring down to 10 cm. 
h Norwegian nets used for Malotus. 
