102. l^he ^amral Hijlory 
in a Wood about a mile Southward from the Church, they are 
much more depreffed and of a cineracm colour ; but both haviiig 
their liaeations from the commijfure to the ri;;7,they are both there- 
fore reprefented under one draught. Tab. 4. Fi^. 6. 
68. How it G^iould com.e about that thefe Ccck/^-f ones of G/^w- 
jf'/o^ ftiould Oiily be found at the Fountain head, and nowhere 
lower in the ftream, nor that 1 could henr of, in the Fields about, 
I mull acknowledg to be a knot not eafily loofed. Some have 
thought them brought out from amongft the Rocks, at the bot- 
tom of the hill where the Spring rifes ; others that they are 
formed by a peculiar virtue of the water, as it runs over the 
rubble ftones that lye near its fx/V ; for, fay they, if you pick 
them never fo clean away, in few months time you flrall have as 
many more. And indeed itmuft be confeil, that I met with fe- 
veral that were only ftriated on one fide, and rubble fconeon the 
other ; and fome of them but juft begun to be a little iir:ea'ed : 
However it be, I (liall determine nothing yet, having impioyed a 
careful and inge-ious perfon to watch the increafe and linear.ions 
of thefe iJowj, which when throughly underftood, fliall be faich- 
fully communicated. 
69. BtHde thofe of clympton^ there are others at Cornrvell^ \a 
the Park of the Right Worfl:)ipful Sir Thomas Fenmf.on^ found in 
a bank of yellowidi clay, of a much different form, aiidrranf- 
verfly flriated, as in Tab. 4. Fig. 7. which though indeed for 
the moil part are hard ftones, yet I was (l^ewed feveral by the 
Ingenious Owner of the place, that were nothing but cl ly, not 
differing at all from that in the bed wherein they lye, and ciit of 
which they feem to be formed, but in figure only ; whi . li is alio 
different from all the bhahular Conck<^ that I find in Books, or 
havefecnin collections of that fort of Shell-fidi. 
70. And fo is the figure of the Conchites {onnA mHornton^ 
Quarry, near approaching to an oval, and fcarce flriated all ; 
which inclines me at leaft to doubt, if not certainly to conclude, 
that thefe Cockle-like fiones were never heretofore any real Cochje- 
fiells^ thus tranfmuted by the penetrating furce of p^trif^ing 
juices,but that moll of them (as the ingenious Mr. Luier"^ thinks) 
ever were, as they now are, Lapides fui ^\emri^^ differing not o dy 
from one another, but many of them from anything in Na.ure 
» Fhilofoph. Tranfia. Numb. j6. 
befide. 
