

LETTER IV. 1 



To the same, 



S in a former letter the freestone of this place 

 has been only mentioned incidentally, I shall 

 here become more particular. 



This stone is in great request for hearth- 

 stones, and the beds of ovens : and in lining 

 of lime-kilns it turns to good account; for 

 the workmen use sandy loam instead of 

 mortar ; the sand of which fluxes,* and runs by the intense 

 heat, and so cases over the whole face of the kiln with a strong 



* There may probably be also in the chalk itself that is burnt for lime a 

 proportion of sand : for few chalks are so pure as to have none. 

 1 Obviously an added letter. En. 



