OF SELBOllXr. 15 



stone, and at considerable depths, well- 

 diggers often find large scallops or pec- 

 tines^ having both shells deeply striated, 

 and ridged and furrowed alternately. 

 They are highly impregnated with, if 

 not wholly composed of, the stone of the 

 quarry. 



LETTER IV. 



TO THE SAME. 



As in a former letter the freestone of 

 this place has been only mentioned inci- 

 dentally, I shall here become more par- 

 ticular. 



This stone is in great request for 

 hearth-stones, and the beds of ovens r 

 and in lining of lime-kilns it turns to 

 good account ; for the workmen use 



