4. YORKSHIRE. 109 



4. Bricks. Where floncs arc far to be 

 fetched, as towards the ccnrer of the Vale, 

 bricks are become a common material. It 

 brick earth be found near the fite of build- 

 ing, as it generall)^ may in fituations where 

 ftones are fcarce, clamp bricks are confi- 

 dered in this country, where coals may be 

 had at a moderate price, as the rcadicft and 

 (all things confidered) the cheapeft walling 

 material. 



5. Cement. Formerly, ordinary Hone- 

 buildings were carried up entirely with 

 *' mortar i" that is, common earth beaten up 

 with water, without the fmalleft admixture 

 of lime. The ftones themfelves and the fil- 

 lings (of flone) were depended upon as the 

 bonds of union ; the ufe of the " mortar'* 

 being merely that of giving warmth to the 

 building, and a degree of iliffnefs to the 

 wall. 



The event, however, proves that walls 



built without lime have in many inflanccs 



flood for ages. Even part of the walls of 



Pickering Castle, formerly efteemed a 



fortrefs of confiderable ftrength, have been 



carried up with a cement which, te appear- 



fmce, feems little fupcrior to common mortar : 



never- 



