^70 IMPLEMENTS. i6. 



The wao-p'ons of the Midland counties 

 (the fize of them extraordinary large) run 

 the width of five feet two or three inches 

 from middle to middle of the rut. Thofe 

 of Gloucefterlhire (of the middle fize) run 

 four feet nine inches wide : thofe of the Vale 

 of Pickering only four feet three inches. 



All thefe widths are much too fmall for the 

 refpedive fizes of the carriages : and how 

 the framers of the Bill above-mentioned 

 could impofe a reftridtion evidently tending 

 TO deftroy the roads they were endeavouring 

 to preferve, is a matter of furprize. 



In the article Roads, page 184, the cficds 

 of carriages pafilng upon Ihelving roads (of 

 the nature of which every barrelled turnpike- 

 road more or lefs partakesj have been men- 

 tioned. The damage will always be in pro- 

 portion to the inclination of the road, to the 

 height of the load, and to the narrownefs of 

 the fpan of the wheels, confidered jointly. 



The center of gravity of the load, (inclu- 

 ding^ the carriage) and the two points of the 

 peripheries of the wheels, (of a two-wheeled 

 carriage) which are in contadl with the road, 

 form a triangle. Thv cxrremity of damage 



is 



