ió Of the Coulter. land ſide. When the edge of the coul th ter ſtrikes a ſtone direAly, the ſtone, al- Fc though driven ſtraight forward, moves| BV to the furrow ſide, where it is leaſt re-| ſiſted. But if the coulter has its edge fi exaly in the middle of its thickneſs, i| and ſtrikes a ſone with its land ſide, I the plough muſt be thrown from the| e land, becauſe the ſtone cannot be preſ 100| |

ſed much farther into the firm ground.|M

In fitting the coulter into the beam,|W| the mortiſe muſt be made parallel to the| Fo)* plane in which the plough moves, and: M niot pointing to the furrow ſide, as is thn| much practiſed; for this practice al- W| ways gives the plough a tendency to M turn off from the land. The poſition N which I here recommend for the edge LL of the coulter, cauſes it to co-operate Fi

with (