164 



ILLUSTRATIONS OF THE 



P 



3 



& 



To 



h 



is there faid 



f the 



Ihells 



d in the primary limeftone of 



Cumberland. I 



muft add, that I have fince had 

 opportunity of verifying the conjedliire, that 



the 



imeft 



rock, 



in 



hich the fiiells were 



found, near the head of Comjlon Lake, is part of 

 the fame body of llrata, where (hells were found 

 m a quarry between Ambleiide and Low- wood. 

 The limeflone of that quarry contains feveralma- 



objeds ; it is in llrata declining about 



fn 



fo 



the perpend 



toward the S. E., and 



■ 



a belt, ftretching acrofs the country from 



N. E. to S. W. 



In a quarry where 



gillaceous fchift 



the fbuth fide of this limeilone belt, is worked 



for pavement 

 may fafely be 

 have the for 

 and full of py 

 kind with th 



are 



preilions of what I th 



ted marine objedls 



they 



f Ih 



are 



uch indurated 



They feem to be of the fame 

 preffions faid to be found in a 



Hate quarry, near the village of Mat in S 



d 



^ 



4 



Another fpot, affording inflances of lliells in 



F 



primary li'meftone, is in DevonQiire. On the 

 feafhore on the eafl fide of Plymouth Dock, 

 oppofite to Stonehoufe, I found a fpecimen of 



fchiftofe micaceous limeilone, containing a fhell 



of 



* Huttoa's Theory, vol. i. p. 327. 



