SEA-FISHERIES LABORATORY. 243 



It is also clear that all the indications point to the 

 main drift of water from St. George's Channel, between 

 Isle of Man and Holyhead, and not between Isle of Man 

 and Ireland. 'No doubt some water may traverse the 

 latter part of the channel, but the directions of the 

 isotherms appear to me to indicate that the sea 

 immediately to th.3 South and West of the Isle of Man is 

 characterised by a less strong circulation than is the case 

 nearer to the coast of Worth Wales. 



Because of the relatively strong inflow round the 



Morecambe Bay Anglesey. 



Fig. 32. Temperature gradient during certain traverses across 

 the Irish Sea from Morecambe Bay to Pt. Lynas. 



coast of Anglesey, we find that the temperature range in 

 the sea off this part of the coast is less than that further 

 to the North along the Cheshire and Lancashire littoral. 

 The water in the Red Wharf Bay region is therefore 

 colder in the summer, and warmer in the winter, than 

 that of the inshore part of Liverpool Bay. One sees this 

 when studying the temperature variations which may be 

 observed while making passages from Fleetwood or Piel 

 to Point Lynas. Fig. 32 represents the gradient on 



