586 FISHING NETS, WITH SPECIAL REFERENCE TO THE OTTER-TRAWL. 



once or twice, and then light green oil, i.e. creosote oil. The heavy oil 

 of tar, commonly called green oil, is also useful. For hemp nets, cutch 

 and coal-tar seem the best methods. Manilla is employed where rough 

 work has to be done, as in the otter-trawls and larger beam-trawls; 

 cotton and hemp in the smaller beam-trawls and shrimp-trawls. 



In the paper referred to,* Dr. Fulton discusses the probability 

 of pelagic fishing with trawls, and concludes that the ideal should have 

 two pairs of otter-boards, so that the mouth and net itself is square- 

 shaped. The practical men, however, seem to have dissuaded him from 

 trying this. As a matter of fact, such a net was experimented with in 

 the North Sea a little more than two years ago with some measure 

 of success. 



DESCRIPTION OF DRAWINGS. 



Plate I. Fig. 1. — Drag-seine or Tuck-net, see footnote, p. 567. 



Fig. 2. — The method of fixing (balching) a balch-line {h) by means of 



settings (s) on to a head-line or ground-rope. 

 Fig. 3. — The method of fixing (marling) the head of the square on to the 

 head-line, and the " Hying mesh " in the wings. 

 Plate II. — Ground-plan of Otter-trawl. 



* Twentieth Report, pp. 329 and 330. 



