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TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



miles at springs and six miles at neaps, and this water has been 

 mixed with that which has been in contact with the sand- 

 banks. That this is so (that the influence of the tide streaming 

 off the sand-banks is indirect at the ship) is shown by the 

 fact that there is no evident connection between the sea- 

 temperature at the ship and the state of the tide, whether 



1°- 



2°- 



Jan u a r y 



I February 



Marc h 



Fig. 3. 



Temperature and tidal variations in January-March, 1907, Morecambe Bay 

 Light Vessel. 



flowing or ebbing. There would be such a connection if tlie 

 influence of the banks on the ship were immediate and direct. 

 So one can use the daily, 4 p.m., observations of temperature, 

 even though the latter are taken at all states of the tide. 



In applying these suggestions, the period January to 



