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Of ihe Coulter. 45 Gdeueß the plough, and parallel to it, cauſes the coulter, by its thickneſs be- hind, to bring the furrow exactly on the edge of the ſheath and mouldboard. No earth falls in between the plough and firm land in wet or looſe ſolls; none ſtrikes on the edge of the ſheath and mouldboard in hard ſoils, but the furrow ſlice takes a regular riſe, with its corner right with the land fide of the ſock. No roots can paſs between the coulter 3nd ſock without being cut, and the coqrner is kept in the furrow, and turned up. And, Zafily, the whole land ſide af the plough being equally preſſed to the firm ground, the preſſure on no part is very great, and the plough is prevented from ruaning in- to the firm ground by any ſudden

ſtrain on the oppofite fide.

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