22, TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
of a common dragonet, a local fish trawled to the West 
of the Morecambe Bay Light Ship in February. 
Mr. Scott, from the examination of the Port Erin 
tow-nettings, finds that there has been this year a quite 
unusual invasion of the Manx waters by WNoctiluca 
miliaris, the minute and lowly organism which is 
responsible for much of the summer luminosity of the 
sea on the coasts of Wales and Lancashire. It appeared 
in quantity in our bay collections at the end of July, and 
then again in September. 
OCEANOGRAPHY COURSE. 
The credit for this idea is due mainly to Dr. W. J. 
Dakin, who first suggested to me that such a course ought 
to be wanted by senior students of Marine Biology and by 
young scientific men and women holding posts, and might 
well, with the apparatus and other facilities we now 
possess, be held at Port Erin. We invited Dr. Roaf to 
join us in order to introduce the Comparative Physiology 
of lower animals, and some other Bio-chemical considera- 
tions. The course was advertised in the following terms : 
‘* Port ERIN BIOLOGICAL STATION. 
‘‘ If a sufficient number of applications are received, 
a short Vacation Course on 
OCEANOGRAPHY 
(HypROoGRAPHY AND PLANKTOLOGY) 
will be given at Port Erin, Isle of Man, in the first half 
of August, by Professor W. A. Herdman, F.R.S., 
Dr. W. J. Dakin, and Dr. H. E. Roaf. 
‘““The course will consist partly of lectures and 
laboratory work in the Biological Station, and partly of 
investigations at sea and on the shore—occasionally on 
