4°3 
of westerly Winds. 
of current, alone, has been considered here ( in order to sim- 
plify the subject), yet that, in the application of these remarks, 
the regular tides must also be taken into the account. But 
from my ignorance of their detail, I can say no more than that 
I conceive that the great body of the tide from the Channel, 
must be subject to much the same laws, as the current itself. 
The opposite tide will doubtless occasion various inflexions 
of the current, as it blends itself with it; or may absolutely 
suspend it : and the subject can never be perfectly understood, 
without a particular attention to the velocity and direction of 
the tides in moderate weather, to serve as a ground- work.* 
I am, with great respect. 
Dear Sir, 
your faithful humble servant, 
J. RENNELL. 
* Messrs. Lawrib and Whittle’s publication, allows the tides in this quarter 
a velocity of one mile and a half per hour, at the springs ; half a mile at the neaps. 
The Britannia’s accident happened at dead neaps. 
