SEA-FISHERIES LABORATORY. 141 
During the same period the surface temperature off Port 
Erin in the Irish Sea ranged from 11:6°C. to 13°8°C.; 
so the temperature conditions are evidently very much 
the same in the two areas under consideration. 
As one of the objects in view in this investigation 
was to obtain, for comparison with similar hauls in the 




lKie.4.—‘‘ Lucas” Sounding Machine as used with ‘‘ Nansen” vertical 
closing net on’S.Y. ‘‘ Ladybird.” 
Irish Sea, as weil as with one another, a series of samples 
of vertical hauls from the deeper parts of these western 
seas, localities were selected off the West of Scotland 
where the chart showed depths of over 50 fathoms, and 
in these areas a search was made for any deeper holes 
