ioi The Statural Hijiory 



in a Wood about a mile Southward from the Church, they are 

 much more depreffed and of a cinereous colour ; but both having 

 their lineations from the commiffure to the riw,they are both there- 

 fore reprefented under one draught, Tab. 4. Fig. 6. 



68. How it Giould come about that thefe C ockle-ftones of Glym- 

 pton Ihould only be found at the Fountain- head, and no where 

 lower in the ftream, nor that I could hear of, in the Fields about, 

 I muft 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 exit : for, fay they, if you pick 

 them never fo clean away, in few months time you (ball have as 

 many more. And indeed it muft be confeft, that I met with fe- 

 veral that were only ftriated on one fide, and rubble ftone on the 

 other ; and fome of them but juft begun to be a little lineated : 

 However it be, I lliall determine nothing yet, having imployed a 

 careful and ingenious perfon to watch the increafe and lineations 

 of thefe ftones, which when throughly underftood, fhall be faith- 

 fully communicated. 



69. Befide thofe of dympon, there are others at Cornwell, in 

 the Park of the Right Worfhipful Sir Thomas Pennyfton, found in 

 a bank of yellowifti clay, of a much different form, andtranf- 

 verfly ftriated, as in Tab. 4. Fig. 7. which though indeed for 

 the moft part are hard ftones, yet I was (hewed feveral by the 

 Ingenious Owner of the place, that were nothing but clay, not 

 differing at all from that in the bed wherein they lye, and out of 

 which they feem to be formed, but in figure only ; which is alfo 

 different from all the bivalvular Conch* that I find in Books, or 

 havefeen in collections of that fort of Shell-fifh. 



70. And fo is the figure of the Conchites found in Hornton 

 Quarry, near approaching to an oval, and fcarce ftriated at all; 

 which inclines me at leaft to doubt, if not certainly to conclude, 

 that thefe Cockle-like ftones were never heretofore any real Cockje- 

 fiells, thus tranfmuted by the penetrating force of petrifying 

 juices,but that moft of them (as the ingenious Mr. Lifter thinks) 

 ever were, as they now are, Lapides fui generic differing not only 

 from one another, but many of them from anything in Nature 



* Pbilofok. Tranfaif. Numk. j6. 



befide, 



