392 BULLETIN OF THE UNITED STATES FISH COMMISSION* 
projecting ear behind as in the English trawl-head referred to, though 
in this respect it is similar to the (English) u Barking pattern.” 
The end of the beam projects several inches beyond the socket and 
is held in place by a stout iron key. Iron wedges are not used to secure 
the beam ends, as is customary in England. 
Fig. 30. Belgian trawl-head. 
The following are the dimensions of the trawl-heads exhibited at Lon- 
don : Height (inside) or vertical diameter from top of shoe to lower part 
of beam, 2 feej; 6J inches ; horizontal diameter, 3 feet 6 inches ; shoe, 
4 inches by -J inch iron ; front of head, 3 inches by J inch iron ; back, 
1J inches diameter. 
The bridles were of four-stranded, 6J-inch manilla rope. 
The trawl used on the smaller craft, and which is pulled in by hand 
or by means of a small winch, is of a peculiar pattern, so far as the 
beam and trawl heads are concerned, the net itself having the same 
general appearance which is characteristic of this form of apparatus. 
The following is a description of one of these trawls exhibited at Lon- 
don : 
Fig. 31. Trawl-head, beam, etc., used in- shore. 
The beam was 21 feet long and 4 inches in diameter. In each end of 
it was fixed an iron bolt 3 or 4 inches long, which passed through a hole 
in the top of the head-iron, and was prevented from getting out of its 
socket by a rope which was tightly stretched along the top of the beam 
and fastened at each end to the top of the head-irons, one end of this 
rope being hauled tight by a small lanyard rove through roughly-made 
