which is confiraied ( as this Author tells us) by the Re- 
liquesof this Marine Animal there found ^ and by An- 
chors, and Shells oi Fiflaes, tound elfe where in the Borders 
of this Valley, at a great depth under ground. 
Now, thstthe Sea may thus raife the ground on fuch 
In draughts, by Sand, Earth and Mud, brought in and 
lodged there at every Tyde, is not at all unlikely: For we 
fee the fame at this day. Particularly 5 in the ifle ot Ox- 
7tey (near adjoyning 1 1 Romf^eji-Msivfh) there was a low Le- 
vel, oft in danger of being overflowed by the River Ro- 
ihcr. But, fomewhat more than threefcore years ago, the 
Sea being let in, hath raifed that Level very conGderably^ 
by bringmg in, and lodging there, a confiderable deal of 
Earth and Mud, every Tyde. But, withal, it hath fo 
frefted the Channel by which it enters and goes out again, 
that the Chanel hy Rye, which i within my Memory) was 
fo fhailow near (what was called) lCe//^bridge, that Men 
and Women were wont to ride through it ; But now (by 
the Tydes entering and returning) that Bridge is long fince 
fwailowcd up 3 and the Chanel become fo broad and deep, 
tiiat a VelTel of good burden might ride there at Anchon 
A fir refemblance of the Seas fretting this Ijihrnns^ and fil- 
ling up the JEftuarks on both fides of it. ^ » aoi.l ^ 
The like, in good meafure, is to be feen at (what they 
callj th<^ Dogger Sands, which is a Bank of Sands, lying 
(obliquely) irom about the Coaft of Norfolk, (if I do not 
rnilfakej tow^ard the Coaft of Zealand^ ox Nonh-part of 
Holland, Which is the place where the Northern and 
Weft.ern Tydes (fince the Rupture of the Ifihmus) do now 
£.3ieet, and dothtre (at ftill-water^ for about an Hour, or*at 
the turning of the Tyde) depofite the Mud andSand.which 
(by thejr rapid motion) is-both ways brought thither. Which 
is fuppofed to be the true caufe of that Sandy Bank. Whether 
this, in trad of time, may there form a new Ifthmus, (if the 
World laft long enough) I cannot fay. But 1 ani apt to think 
that the former Ijihmns^if the Tydes had flopped there, and 
