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nidi fliorcs, is extremely probable ; thereTeing feve- 
ral evidences of a like fubddence of the land in 
Mount’s-bay. The principal anchoring- place, call'd 
a lake, is now a haven, or open harbour. The mount, 
from its Cornifh n?me *, we mud conclude to have 
hood formerly in a wood, but now at full tide is half 
a mile in the fea, and not a tree near it ; and in the 
iandy-beach betwixt the Mount and Penzance, when 
the lards have been difperfed by violent high tides, I 
have feen the trunks of feveral large trees in their 
natural polition, the furface of their fedtion worn 
fmooth by the agitation of the water, fand, and gra- 
vel, as if cut with an axe, upon which, at every 
full tide, there mud be twelve feet water ; fo that the 
diores in Sylley, and the neighbouring dioresof Corn- 
wall, are equal and concurrent evidences of fuch a - 
fubfidence, and the memory of the inundations, 
which were the neceffary confequences of it, is pre- 
ferv'd in tradition 5 tho’ like other traditions, in pro- 
portion to their age, obfeur’d by fable. 
I diould now make an apology, Sir, for troubling 
you with this fketch of the alterations, which the 
Sylley illes have differ’d lince the age of the antient 
hidorians : but becaufe I have no other view in it 
than tedifying my refpedt to that honourable Society, 
in which you defervedly hold fo eminent a dation, 
that mud be my apology. I only beg leave to ob- 
feivc, that altho’ thefe idands are neither of that 
extent they were formerly, nor fruitful of tin, nor 
dor’d 
* Guavas lake, fignifying the grey rock in- a wood. 
