[ 88 1 



few years, the great, and lafllng, nourifh- 

 ment to vegetation is by this pradice de» 

 ftroyed. 



Ground will fometimes be rough-^ 

 fkinned, and exceedingly difficult to be 

 cleaned ; which, I apprehend, induced 

 fome ingenious perfon, a few years fince, 

 to invent, and conftrud:, a plough, which 

 remedies the inconvenience at once. This 

 plough has two feparate (hears, and coul- 

 ters ', but both are contrived to operate 

 in the fame line, or direction. They 

 are each of them fet to any depth, and 

 lay the ground the fame way. The firfl 

 pares off the turf, or fkin ; the next 

 ploughs up a clean body of earth, and 

 throws it dire(Slly over the former, fo as 

 to bury it effedually. By which limple 

 means, the land is at once effedlually 

 cleaned. Whatever further working the 

 ground may require, it may be done by 

 9 fhallower 



