88 KEPOET OF COMMISSIONER OF FISH AND FISHERIES. [86] 



Jackstays : 



Iron, round, diameter, £ inch. 



Eyebolts, brass ; diameter of metal, | inch. 

 Arms: 



Wood, for wing nets, length, 2 feet b' inches. 



Wood, for wing nets, diameter, 2| inches. 

 Weight : 



Frame, 275 pounds. 

 Bridle: 



Rope, circumference, 3 inches. 

 Net: 



Lead rope, circumference, 2 inches. 



Head rope, circumference, 1| inches. 



Length, 17 feet. 



Size of mesh, square, 1 inch. 



Material, cotton, barked, 30-thread. 



Pocket, length, 6 feet. 



Pocket, size of mesh, square, 1 inch. 



Pocket material, cotton, barked, 21-thread. 



Jacket, length, 6 feet. 



Jacket, size of mesh, square, $ inch. 



Jacket material, cotton, barked, 16- thread. 



Bottom lining of cheese-cloth for very deep water work. 



It will be observed that there is no change in the beam, and the run 

 ners remain the same in height and length, bnt they are much reduced 

 in weight and so modified in form as to avoid sharp angles in the net, 

 thus equalizing the strain over its various parts and largely increasing 

 its limit of safety. 



The jackstays on the inner surfaces of the runners and the guard nets 

 which are laced to them are not new, but we have confined their use 

 heretofore to the small beam trawls and deep sea trawls. There is no 

 doubt that they prevent the escape of many fish and other quick moving 

 objects. 



The trawl-net is the same in every particular as that already described 

 for the beam trawl, and the bridle is fitted and secured precisely in the 

 same manner. The mud bag is also the same. 



WING- NETS. 



The wing nets shown in Plate XL VIII were devised by the writer in 

 1884, and the pocket introduced to prevent the escape of specimens 

 after having entered the nets. They are made of cheese-cloth in the 

 following manner : 



The material is laid on deck and folded once lengthwise, a pattern is 

 then placed over it and the two halves cut from the piece at the same 

 time; the side seams are sewed up, the ends hemmed, and one end 

 turned in over a galvanized -iron ring, thus forming the pocket. The 

 double bridle is seized to the ring through the net and serves to hold it 

 in place. The lashing is stopped to the lower end of the net to prevent 

 its loss when cast adrift. And to prevent the pocket from turning 



