142 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
c, a cup thermometer is immersed a few inches below the 
surface, and the temperature read and noted, 
d, a bottom reversing thermometer is lowered on a 
sounding line, and the bottom temperature is noted, 
the depth at the same time can be verified to show 
the ship is on the right spot, | 
, a bucket of water is drawn from the surface and the 
d 
specific gravity (at the particular temperature) taken 
and noted, 
f, by means of a “‘ water bottle” a sample of water from 
the bottom is brought up and the specific gravity (at 
the particular temperature) taken, and noted, 
g, note on a form the date, station, time, state of tide, 
wind, weather, state of sea, air temperature, and 
barometer reading, 
h, Jower the trawl, with a bottom tow-net attached to 
one end of the beam, 
i, put outasurface tow-net. At certain times and localities 
it might be desirable to add a “‘ mid-water”’ tow-net, 
after the plan adopted by Prof. M‘Intosh with such 
success, for the capture of the larval and post-larval 
stages of food fishes; also it would be a good plan 
to have an ordinary Naturalist’s dredge down for 
a portion of the time the trawl is overboard—say 
half-an-hour—in order to determine whether it gives 
any different results in regard to the nature of the 
bottom, and of the fauna. 
On arriving at the end of the “‘ Station” the following 
would be the procedure :— 
k, haul in surface tow-net and transfer contents to large 
wide-mouthed jar of clear sea-water labelled “‘ surface 
tow-net’’ and put it aside in laboratory, if mid-water 
net is used, treat it in the same way, 
1, bring in the trawl net, 
me. 
