y. YORKSHIRE. 173 



prcfTure of the feet of the cattle being di- 

 reded towards the center, would iTdhev J^iffen 

 than weaken the arcb ; v, hlle the fwelling of 

 the clay and the foil (if any), with the 

 water which would of coiufe filter through 

 the pavement, would afTill in promjting the 

 general union. 



If irregular rough pebbles were ufcd, the 

 fiatteft end ftould be placed downward to 

 prevent their injuring the clay ; and the 

 point upward, to prevent the cattle from 

 Aiding into the pond while drinking-, as well 

 as from (landing upon them after their thirft 

 were quenched. 



But ilones hammered into a long-cubical 

 form, like the Scotch ftones now ufed in 

 pavi?g the ftreets of London, would make 

 the firmed: pavement ; the upper edge being 

 left rough for the purpofe lalV mentioned. 



It appears to me that a well-made pond 

 paved in the workmanlike manner in v.hich 

 the ftreets of the metropolis are now in general 

 paved, muft of ncceffity remain perfedl until 

 an eruption of the earth, or a general dlfTo' 

 lution take place : provided the rim Vv-erefrom 

 time to time repaired, to prevent the feet of 



cattle 



