234 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
(3) ‘‘ Liverpool Bay.’ This group consists of two 
series of experiments—fish liberated during the 
‘winter’? months, and fish liberated during the 
“summer ’’ months. The area of liberation includes 
the sea from just off the mouth of the estuary of the 
Dee to off Blackpool. The fish were set free within the 
limits of the territorial area. Here again the symmetry 
of the winter experiments 1s marred by the fact that most 
of the fish set free were caught outside the area of 
liberation, some being caught in Red Wharf Bay, and 
others in the estuary of the Lune (in Morecambe Bay). 
But we will see that the winter migration is an along- 
shore one in either direction, so the results do not apply 
particularly to any one place. The summer experiments 
relate to fish caught and liberated in the same area, with 
two exceptions—experiments 15-05 and 14-05. But 
the former (in which the fish were set free off-shore) 
included only 19 fish, and the latter (which relates to 
fish captured in Beaumaris Bay) may perhaps be grouped 
together with the truly Liverpool Bay experiments, for 
the small number of fish set free in the former experiment 
does not affect the general results; while we are not 
comparing the migrations of plaice from the Red Wharf 
Bay area in the summer with other area-migrations. 
(4) ‘“Red Wharf Bay.’ Most of the fish dealt 
with were captured and liberated on the area as defined 
above. The only exception is experiment 4-’06, which 
relates to fish caught near Bahama Bank and taken 
across to the North Welsh coast. But only 8 plaice were 
so dealt with, and the results of the experiment can 
hardly affect the general results of the group. All the 
fish were liberated during the months October to 
February. 
(5) “Bahama Bank.’ Only 65 plaice were 
