MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 15 
branchus membranaceus, Ascidia venosa, A. plebeia, 
Corella parallelogramma, Polycarpa sp., Leptoclinum sp., 
and other Compound Ascidians. 
In Port Erin Bay after dark the electric light was again 
used successfully in the bottom and surface tow-nets. 
On the third day an early start was again made, with 
the object of leaving time to run down into the deep 
water lying to the south of the Isle of Man. Unfor- 
tunately, however, a thick fog was encountered, which 
hampered our movements during the morning and changed 
all the plans for the day. After passing the Chicken 
Rock, the ‘‘Hyzna”’ steamed slowly for Liverpool, and 
reached the Mersey about one a.m. on Tuesday. A few 
hauls of the trawl and dredge were taken on the way 
home with no great results, and the tow-nets both bottom 
and surface, were worked whenever practicable. It is 
noteworthy that although we passed not far south of 
where the great quantities of Anomalocera patersonii had 
been captured on the previous day, not a single specimen 
of that Copepod was obtained either on the surface or 
with the deep tow-net. 
The important feature of this cruise, however, was the 
use which was made of the electric lght for collecting 
after dark. On the first night, in Ramsey Bay, after the 
shore party had left and the ship was anchored for the 
night, an electric hght of 1000 candle power was hoisted 
a few feet above deck, and this allowed work to be carried 
on almost as comfortably as during the day. Captain 
Young, of the Liverpool Salvage Association, who was in 
’ 
command of the ‘“‘ Hyena,” then kindly arranged for us 
a 60 candle power Edison-Swan submarine incandescent 
lamp in the mouth of a tow-net. This illuminated net 
was let down to a depth of three fathoms, and allowed to 
remain there for half an hour. At the same time, another 
