t 57 ] 
coinjhire and Glocejlerfhire , befides many other Places.' 
They are fuppofed to have been either left at the uni- 
verfal Deluge, orelfe that the Sea, wh.ch was formerly 
more extenfive than it is how, left thole Relifts be¬ 
hind it, on its being confined to narrower Bounds. 
The foffil Shells are ranked under the following 
Titles. 
Cochlites , Spiral or Snail Shells of various Kinds ; 
fome of the Specimens have the Shell entire, whbft 
others are encrufted with a ftony Subftance, or quite 
petrified ; and among them are fome tails of Stone 
formed in the Shell of a large Nautilus which has 
fince perifhed, no Remains being left. 
Ammonite, Cornua Ammonis , the Horns of Jupi¬ 
ter Ammon. They are generally calltd Snake-flones, 
and are found in moft Parts of the Earth, but in 
England fined and moft perfeft. The Size of them 
is various, from a Quarter of an Inch to more than 
twoFeetin Diameter, but rarely folarge. It is a Mat¬ 
ter of Surprize, that fo great a Number and Variety 
of them fhould be conftantly met with in the Strata 
of the Earth, in Mines and other fubterranean Places, 
when no fuch Shells are to be found in their recent 
State; this cannot eafily be accounted for, unlefs 
it be conjeftured, that the Fifh which occupies the 
recent Shell is an Inhabitant of the deepeft Parts of 
the Ocean, and that nothing lefs than the Agitation 
occafioned by the univerfal Deluge could remove it 
from its favourite Concealment: If that be the 
Cafe, it is no Wonder we find not this Shell in its 
recent State. 
OJlracites , petrified Sea Shells of the bivalve 
Kind, being plain and common Oyfters of various 
Sizes; fome are found fiogle, or only a Pair of 
Shells •, others in Clufters, being a great Number 
of Shells firmly united and cemented together. A 
particular 
