[ *1 ] 
them, neither will it account for the following phe- 
nomena. 
§ 4. It has been mentioned before, that upon fhift- 
ing of the fands in the chanel, walls and ruins are 
frequently feen : There are feveral phenomena of the 
fame nature, and owing to the fame caufe, to be feen 
on thefe fhores, as particularly a ftrait-lin’d ridge 
like a caufeway, running crofs the old town creek 
(mark’d H) in St. Mary’s, which is now never feen 
above water ; fo that the fublidence, if any, has been 
different in different places. From the ifland of Samp- 
fon I faw the foundations of hedges (fo we call the 
ftone-fences of our fields, which are not built of ma- 
fonry and cement) running on in a ftrait line crofs the 
frith E, towards Trefcaw ifle, till they were hid in 
fand 5 which fand, when in its full tide, has from ten 
to twelve feet water on it. Now we cannot fuppofe, 
that the foundation of thefe hedges was laid as low as 
high-water mark (for who would build fences upon 
fo dangerous a level ?) and if, at a medium, we fup- 
pofe them to have been laid only fix feet above the 
full tide, I am perfuaded it will not be thought an 
unreafonable calculation. Here then we have the 
foundations, which were fix feet above high-water 
mark, now ten feet under, which together make a 
difference as to the level of fixteen feet. To account 
for this, the flow advances and depredations of the 
fea will by no means fuftrce ; we muft either allow, 
that the lands inclofed by thefe hedges have funk fo 
much lower than they were before ; or elfe we muft 
allow, that, fince thefe lands were inclofed, the whole 
