120 September 1748. 



quite fraooth and roundifh on the outride, 

 and lay in a ftratum which was a foot deep. 

 Then the brick-coloared clay mixed with 

 fand appeared again. Bat the depth of this 

 ftratum could not be determined. Query, 

 could the river formerly have reached to 

 this place and formed thefe ftrata ? 



Mr. Bar tram has not only frequently 

 found oyfter-fhelis in the ground, but like- 

 wife met with fuch fhells and fnails, as 

 undoubtedly belong to the fea, at the dif- 

 tance of a hundred and more Eng/i/h miles 

 from the more. He has even found them 

 on the ridge of mountains which feparate 

 the Eng/i/h plantations from the habitations 

 of the lavages. Thefe mountains which 

 the Eng/ijh call the blue mountains, are of 

 confiderable height, and extend in one 

 continued chain from north to fouth, or 

 from Canada to Carolina. Yet in feme 

 places they have gaps, which are as it were 

 broke through, to afford a paffage for the 

 great rivers, which roll down into the 

 lower country. 



The Caffia Cbamcecrifta grew on the 

 roads through the woods, and fometimes 



d . on 



The common Quartz, Forfter's Mineralogy, p. 16. 

 And Quarix'im color atum, Linn. Syft. nat. 3. p. 6r. 

 Quartxum Jclidum opacnm color atum. Wall. Min. 99. 

 'fjp:pure Quartz, Foift. Min. p. 16. 



