944 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
preservation and the first general examination of the 
samples, which were all sent eventually, like the rest, to 
Mr. Scott. The larger organisms, such as Medusae, 
Sagitta and Decapod larvae, were picked out and 
counted at Port Krin before measuring the sample. 
From Mr. Scott’s numerical estimates of the species, and 
his own notes of the material, and the physical conditions 
when gathered, Professor Herdman has drawn up the 
present account of the collections and the discussion 
of results. These results are in some respects so different 
in detail from those of the previous year (1907) that it has 
been decided to continue the work on the same lines 
during at least another year. Several improvements in 
method have been introduced, and others are contem- 
plated, but these are additions rather than substitutions, 
in order that the results may be, as far as possible, 
comparable year by year. It is not necessary to describe 
again the methods of collection and of estimation of the 
samples; for these and other details, such as the positions 
of the observing stations (shown in fig. 10), reference 
should be made to last year’s report. | 
PLANKTON OF PORT ERIN BAY -IN 1908. 
We shall first of all separate the gatherings taken 
across the bay throughout the year from those taken out 
at sea, by means of the yacht. These bay gatherings 
were all single traverses, taken in a similar manner with 
similar nets (No. 20 silk), and are all 15 minutes hauls. 
We have 155 surface hauls taken across Port Erin 
Bay throughout the year, from January 4th to December 
30th. All months are represented, and nearly all weeks. 
January and March are the only months in which less 
than five hauls were taken, and in all the remaining 
