siB Captain Anderson on the peculiarity of the tides 
I. Phenomena of the Tides between Fairleigh and the North Fore- 
land on the English coast, and Cape D’Alpree and Calais on 
the French coast * 
The tides rise between the easternmost point of Fairleigh 
and the North Foreland from seven to eight feet higher 
than on either side of these points ; and during the last three 
hours and a quarter in which the tides run to the eastward, 
the water falls by the shore, making it half tide of ebb on the 
shore, or by the ground, when the current of the tide 
changes and begins to run from the eastward to the west- 
ward ; and it still continues to fall by the shore for two 
hours and three quarters after the tide has so changed ; at 
which time it is low water every where within these limits. 
The course of the tide continues to run to the westward two 
hours and three quarters longer, during which time the 
water gradually rises by the shore, making nearly half flood 
by the land, at the time the current of the tide ceases to run 
to the westward ; and returns again to the eastward, and con- 
tinues to rise for three hours and a quarter, when it is high 
water by the ground. It then begins to fall again during 
the last three hours and a quarter, whilst the current of the 
tide sets to the eastward, as above stated ; and so on in con- 
tinual rotation. -f 
These appearances have, no doubt, given rise to the 
* In the detail I shall principally confine myself to the English coast, as the 
phenomena, and their causes and effects, on the French coast, within the same 
limits, are precisely similar. 
f Every one who has attended to the tides, in general, knows that, where there are 
no local obstacles to prevent it, they flow regularly about six hours in one direction 
and then make high water, and ebb about the same time in a contrary direction, 
then making low water. 
