6. YORKSHIRE. 107 



2. Pantiles. Fovmci\y,J}razv nnd a licavy 

 kind oijh.te were the conmion coverings ; but 

 of late yc2TS pr.nliles have become univerfal, 

 for ordinary buildings j and blue f.ate for 

 better houfes. 



In the fouthern counties pantile is consi- 

 dered as an ordinary material : but the efti- 

 mation of it there arifes from an improper 

 method of ufing it ; not from any intrinfic 

 demerit of the material itfelf when properly 

 manufad:ured. From London to Grantham 

 in Lincolnfhirc, fcarcely a roof of pantile 

 occurs : north of Grantham it is become the 

 almoft: univerfal covering. It has two qua- 

 lities fufficiently valuable to rccomm.end it in 

 any country : chcapnefs and lightnefs. 



Much ho\vever depends on the manufac- 

 turing, as well as on the la\hig of p .ntiles. 

 If the materials be not fufficiently expofcd 

 to the adion of the air ; or, if of diflimilar na- 

 tures, though fufficiently tempered, they be 

 not united f'tyidently into one hotiiogcneous 

 mafs or uniform fubftnnce, the tiles which 

 are made from them arc liable to peridi ; not 

 only before burning as well as in the kiln, 

 but after l?eing expofed to the influence of 



the 



