NETTING. 89 



meshes called the walling." In the accom- 

 panying plate the large square mesh of the 

 walling is shown in strong lines, and the fine 

 diagonal mesh of the sheeting is shown in com- 

 paratively faint lines. The sheeting must be 

 much longer and much wider than the walling 

 (some authorities say not less than twice the 

 length and twice the depth), and hence the 

 slack is shown lying on the ground in the plate. 

 Referring to the plate, A is the head or cork 

 line, and B the foot or lead line, a a a the corks 

 on the cork line to float the upper side of the 

 net, and b b b pipe-shaped leads strung on the 

 lead line four inches apart to sink the lower 

 side of the net. The ends of both lines A and 

 B are worked into loops for the convenience of 

 attaching ropes to them for hauling, &c. For 

 lacing together two or more lengths of trammels 

 in an extraordinarily wide part of the stream, a 

 length of rope can be fastened to the loops on 

 the lead lines, worked round the vertical ropes 

 C at the end of each trammel, and fastened 

 round the loops of the cork line. The walling, 

 preferably square, should be of very strong 

 twine, fifteen inches mesh, and the sheeting of 

 fine twine, say two inches mesh. Altogether, 

 compared with the drag net, the trammel is 

 lighter in material and finer in the mesh of the 

 sheeting, but of about the same dimensions. 



