76 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
REPORT ON THE WORK AT PIEL. 
By Anprew Scott, A.L.S. 
I. DistrrpuTion oF Fiso Ecas In THE PLANKTON. 
This investigation was continued in 1917, and 387 samples 
of the surface organisms from Port Erin Bay were examined 
for fish eggs. Nothing noteworthy has to be recorded in the 
seasonal distribution compared with any of the previous years. 
The records will be useful, however, when the complete analysis — 
of the whole investigation is dealt with. 
II. Or ry Coprpopa (Temora). 
On July 10th, 1917, at the height of the Manx herring 
fishery, Professor Herdman’s attention was directed to large 
bright red patches at the surface of the sea which had been 
noticed by the fishermen for some days near the Calf of Man. 
Samples were secured by dipping a half-gallon jar into the mass 
and pouring the catch through a fine net. When the material 
thus collected was examined it was found to consist of an almost 
entirely pure catch of the Copepod Temora longicorms. An 
estimation was made of the number present in the sample 
submitted for examination, by the method used by us in our 
quantitative plankton investigation. From the results obtained 
it was calculated that the half-gallon jar contamed at least 
132,000 Temora and 2 Calanus. Part of the sample was after- 
wards mixed with a little water and poured into a measuring 
jar. It was allowed to settle toa final level and read off. The 
volume of Copepoda was 9 cubic centimetres. The jar was 
then shaken up and the contents poured into a filter paper, 
which separated the Copepoda from the water. The small 
mass of Copepoda thus obtained was transferred to dry filter 
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