en 
Fig. ils 
Vig. 2. 
ON A DEEP SEA TOW-NET, ETC. et 
EXPLANATION OF THE PLATE. 
View of the net, open and at work. a. the net; 
b. the frame; c.d. the links forming the opening 
line; ¢. the loop by which it is fixed into the lock; 
jf. the hempen portion of the closing line; g. h. 7. 
brass links composing the remainder of it; 7. loop 
for attachment to the lock; &. the rope for towing 
the net; J. the lock; m. the sinker; mn. the cord 
or chain by which the opening line is attached to 
the lock. 
The net-frame seen open from the front. a. 06. the 
two halves of the frame; c. the flat piece for 
towing by when open; d. loop to which the 
~ closing line is attached; e. loop through which it 
Fig, 3. 
Fig. 4. 
Fig. 5. 
passes ; f. end of brass link; g.h.7z. loops for cords 
to prevent the net from opening too far ; 7. loop to 
which the opening line is attached; k.k’. the 
hinges; /. the hempen part of the closing line. 
The first messenger. A. the upper half, seen side- 
ways; B. longitudinal section through the complete 
messenger; C. the lower half, seen from the front. 
The second messenger. A.B. the two halves, seen 
from the inner surface; c. the complete messenger 
from above. 
View of one cheek of the lock, seen from within. 
_a.a. the brass cheek; 0b. the pin which moves into 
and out of the notch; c. the bell-crank lever 
actuating the pin; d. its pivot; e.e’. holes for the 
bolts (fig. 7) to hold the cheeks together and to the 
rope; /.f. groove in which the towing rope lies; 
