84 EEPOET OF COMMISSIONER OF FISH AND FISHEE1ES. [82] 



The following are the dimensions of the frame ai;.d net in use on board 

 of this vessel : 



Beams : 



Iron pipe, length, 11 feet. 



Outside diameter, 2-J inches. 



Thickness of metal, t \ inch. 

 Collars, brass, width. 3 inches ; thickness, } inch ; length of flange, 9£ inches ; di- 

 ameter of bolts, f inch. 

 E turners : 



Length, 4 feet. 



Depth, 3 feet 6 inches. 



Width, 3 inches. 



Thickness, | inch. 



Weight of frame, 275 pounds. 



Eope for bridle, manila, 3 inches. 



Eope for roping, manila, 2-J inches. 

 Trawl net : 



Length, 17 feet. 



Size of mesh, square, 1 inch. 



Material, cotton, barked, 30-thread. 

 Pocket : 



Length, 6 feet. 



Size of mesh, square, 1 inch. 



Material, cotton, barked, 21-thread. 

 Jacket: 



Length, 6 feet. 



Size of mesh, square, | inch. 



Material, cotton, barked, 16- thread. 



Bottom liuing of cheese-cloth for deep-sea work. 



The length of the net, including jacket and pocket, is given when it 

 is mounted and on a stretch. 



The runners are made of flat bar-iron with a small rod running around 

 their inner surfaces to which netting is laced to fill the spaces and pre- 

 vent the escape of fish, &c, from the trawl. The runners are tied 

 together rigidly by two beams of wrought-iron piping having a brass 

 collar screwed on each end. These are secured to the runners by 

 screw-bolts. 



The netting used for trawl and dredge nets, as well as pockets and 

 jackets, is purchased by the bolt. The net is cut from the bolt, the 

 width of which represents the length of the net; the edges are then 

 joined by a seam running lengthwise on the upper side of the bag, 

 forming au open-mouthed net which is roped with 2£-inch manila. That 

 portion forming the loop, intended to drag on the bottom between the 

 runners, is loaded at intervals with lead weights. 



The pocket is stitched to the main bag about 3 feet below the lead 

 rope, and the jacket is laced its width above the lower end of the net, 

 so that the edges of both come together. The bag is attached to the 

 rear ends of the runners by strong seizings at the four corners, leaving 

 the lead ropes sufficiently slack for the upper one to touch the beam. 

 A netting is usually stretched between the beams. 



Floats are attached to the net a few feet from the lead rope by means 



