Of OXFORDSHIRE. 103 



befide, that thefrefti or fait- water can any where afford us. But 

 before I engage in this great controverfie, let us firft confider a 

 few more of thtfeftones refembling fl>ell-fifh. 



71. And firft, the above -mentioned Conchites found in Horn* 

 ton quarry, and reprefented in Tab.^. Fig, 8. which is not a 

 folidftone within (as all the Cocklc-Jiones hitherto defcribed have 

 been) but hoHow, and filled with fyar ; fomtimes fhot into ir- 

 regular figures, but for the mod part forked, as in Fig. 9. the 

 bafts, or place where the branches of the fork are conjoyned, be- 

 ing rooted (in all that I have yet feen) at the commiffure or hinge 

 of the valves , and the branches extending themfelves in the 

 broader parts of the Conchites ; of which operation of Nature I 

 can give no other account, but that it was firft obferved, by the 

 Reverend and Ingenious Mr. Clark, Re&or of Vreyton near Ban- 

 bury, from whom, befide other favors , I received many of 

 them. 



72. After the bivalvular Cockles found always with their 

 valves clofed together, come we next to confider the other Bi- 

 valves found never fo, but their valves always apart. And fuch 

 are the ftones refembling Efcallops, and fome other ftriated Con- 

 chylia : whereof that reprefented Fig. 10. is the moft curious in 

 its kind I ever yet faw, found in Heddington quarries by Mr. Hi* 

 chard Stapley, an ingenious young Man, and learned in thefe mat- 

 ters, to whom I am beholding not only for this, but for fome o- 

 ther choice ftones hereafter to be mention'd. Which amongft all 

 the Peftines or Efcallop-f hells I could find in the Itthyographersjdtft. 

 refemblesthe Petlen after of Aldrovandu^ 1 . Of colour it is yel- 

 lowifh, eared on both fides, the lineations from the commiffure to 

 the rim of the ftone very prominent, and yet having fome o- 

 ther tranfuerfe lines (not bending to, but from the commiffure') 

 ftanding upon them, and not pafling through the deep furrows 

 fo as to joyn with each other, 



73. As the tranfuerfe lines do in the next following Peclinites, 

 Fig. 1 1 . where they are both of equal depth, and very fmall, 

 thick and fine ; the tranfuerfe lines all of them bent to the commif- 

 fure, but the othery?ri< not meeting together in it, as in the for- 

 mer and following Efcallops : This ftone is of a light reddifh co- 

 lour, eared on both fides, and found in the quarries in theparifh 

 of Heddington. , De +**,. ,. eap . c 9 , 



74. And 



