. ( 917 ) 
it might have entered further in former times, who can 
tell. As that Sea by Brifiol between Wales and Cornwall . 
That of the Humher between Tor^Jkire mA Lincohfinr^: 
And we may reafonably think, that the Wa[hes and the 
Femes in Lincohpire^ may have heretofore been Sea, or 
overflowed by the Sea at High Tydes : And that of the 
Thames (between Kent and Effex 5) which now flows 
(above London and Brentford*) within a mA€ oi K.ingfiou 
(at Spring-Tydes^) it may perhaps feeni toodaring,to think 
it may formerly have flowed as far as Oxford (between 
Shot-over Hill md Foxcomb Hill) and fo onward toward 
Wallingford (in the Romans time called Galena-^ but there 
is thrs to countenance it, that ("it I be not much mif-in- 
formed J there be frequently found (in our Stone- Quarries 
- and Gravel«pits) about Oxford^ Fiih Shells, and even the 
Bodies of Fifti Petrified, at great depths under ground ^ 
of which Mr Lloyd (who keeps our Repofitory at Oxford) 
may give (I fuppofej a better account than I can. And 
there have been fno doubt/) and now are (in England) 
many other ^ftuaries, Creeks or Arms of the Sea (enter- 
ing a great way within Land,) fome whereof may be (in a 
manner) filled up, and become firm Land 5 others much 
narrower, (hallower and (horter, than in former times they 
have been. For it is the nature of JEjharks^ where the 
Tydes flow in, to leave behind them, at their Return, 
much of Mud, Oafe or Sleech (as they call it,) which 
doth in time come to be firm Land. 
• But of thefe 1 forbear to difcourfe farther, (leaving it to 
the Sagacity of other inquifitiveperfons, who may be bet- 
ter acquainted with thofe parts of the Country, than I do 
pretend to be ;) That of thQ Ijlhmus between D^jt'er and 
Calais, being what I principally intended. 
P ppppp 2 
