MARINE FOOD FISHES 129 
season it is not unusual to search for the eggs of these 
fish with a well-greased sound, for where the herring 
spawn is, there the haddock are gathered together. 
It is worthy of note that when an exceptional catch 
of haddock is made, if the stomachs of these fish are 
examined they will frequently be found to be full of 
herring spawn. 
The long line is usually left down during the night, 
and weather permitting is fished the following day. In 
rough weather, however, it may be impossible to take 
it up for several days, and then as already stated, dog- 
fish play havoc with the catch. 
Halibut, cod, haddock, skates and rays are the more 
important of the marketable food fishes taken on the 
long line. 
Of the various nets the trammel, the seine, the drift- 
net, and the trawl are the only ones that call for our 
attention. The trammel is not a single net, but consists 
of three perpendicular walls of netting set in the sea 
alongside each other, and at right angles to the shore. 
Each wall of netting is corked above and weighted below. 
The two outer walls of netting have a large mesh, whereas 
the mesh of the centre net is quite small. Further, the 
central net is twice the length of the two outer nets, but 
is gathered together and set slack so as to hang between 
them. The trammel catches fish as they swim along 
the shore and is mainly used to procure such fish as 
mullet and bass. A mullet coming, say, from the right, 
swims through the broad meshes of the outer wall on 
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