6. YORKSHIRE. 137 



or fnow water which beats in between the 

 tiles. Or it may be owing jointly to the 

 two caufes. 



Be this as it may, an improvement has 

 lately been flruck out which feems to bring 

 the art to as great perfedlion as perhaps it is 

 capable of being raifed to. This improve- 

 ment confifls in nailing the plaftcring laths 

 leneath^ in (lead of upon^ the fpars ; laying 

 the main coat of plaftering above the laths, 

 between the fpars •, afterwards fmoothing 

 over the under-fide with a thinner coat. This 

 method removes the cement from the more 

 immediate adtion of the atmofphere, gives a 

 free circulation to the air and the water 

 (which may be beaten inj between the tiles 

 and the plaftering ; and at the fame time 

 gives neatnefs to the room beneath ; without 

 the expence, or the inconveniency, of a coun- 

 ter ceiling. 



There is one very great convcniency arifes 

 from laying pantiles on dry. If by the wind, 

 or by accident, a tile be thrown offor broken, 

 it may be replaced by a plowman, as well as 

 by a profcflcd tiler : a conveniency, which 



upon 



