INTRODUCTION.

THE Plough is an inſtrument of ſuch importance in agriculture, that, in all ages, it has held the firſt

place among the implements of that

art; nor is there any nation mentioned

in hiſtory, who have attempted to cul- tivate the ground without it, except- ing ſome Barbarians, deſtitute of every art and ſcience. And even theſe have uſed ſomething eguivalent, ſome turn- ing up the ground wich the horns of oxen, and ſome with other things equal- Iy unfit. Theſe rude and barbarous at- tempts only ſhow the great uſefulneſs of the inſtrument of which I propoſe

to treat. A Though