276 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
The branch of the southern tidal stream that passes 
to the west of the Isle of Man meets with the corre- 
sponding stream from the north off Contrary Head, near 
Peel, and the southern stream then turns inshore and flows 
southwards along the coast over an area extending to from 
four to five miles from the shore. The current thus runs 
past Port Krin from the north, towards the Calf Island, 
as the tide is rising on the shore. This stream begins to 
flow about an hour and a half before high-water at 
Liverpool. Outside, say, an average distance of five miles 
off the land to the west of Port Erin there is very little 
tidal current. One branch of this south-going flood tide 
sets from close to Bradda Head towards the Calf Sound, 
and is known as the “‘ Bowlane tide.” Outside that for a 
couple of miles there is less stream, and then a larger 
branch forms the main tide which runs from about three: 
miles west of Contrary Head to about one mile west of 
the Calf Island, where it meets a part of the tide flowing 
up Channel from the south, and together they turn to the 
east, rush past the Chicken Rock, and make along the 
south coast of the Island for Langness Point, round which 
the current forms a strong race. ‘The tide continues up 
the east side of the Island to Maughold Head, and can be 
felt to a distance of at least eight miles off the shore. At 
Mauehold Head this flood tide running north meets with 
the tide from the north end of the Island which has just 
come across Ramsey Bay, and they both turn outwards so 
as to run side by side to the eastward towards Morecambe 
Bay in Lancashire. 
At several points on the east side of the Island, close 
in to shore, there is a narrow current running south, while 
the flood tide further out runs north. This is the case, 
for example, between Port St. Mary and the Calf Sound, 
where the main flood tide runs for Langness and an inner 
eddy sets southwards close to the rocks. 
