_Fig._ 12. Is the Earth-board, with its Inside upwards; the Notch _a b_ shews the Rising of the Wood, which takes hold of the Edge of the Sheat, to hold it the firmer, to which it is fastened by the Holes _c_ and _d_; and at the other End it is fastened to the Drock, at the Hole _e_. All which is seen as it stands mark’d with W, in _Fig._ 3. But this Pin, with which it is fastened to the Drock, is bigger in the Middle than at each End; which prevents the Earth-board from coming near the Drock: By this Pin, the Earth-board is set at a greater or less Distance from the Drock, as there is Occasion to throw off the Furrow farther from the Plough at some times than at others: It always stands considerably farther out on the right Hand than the Ground-wrist does, which is one Reason that the Drock is made crooked, bending outwards in that Part. The long Handle X is _Fig._ 13. long Five Feet Four Inches, broad in the widest Part Four Inches, pinned to the Sheat thro’ the Holes _a b_, and pinned to the Drock through the Hole _c_. The short Handle S is _Fig._ 14. and is long Three Feet Nine Inches, pinned to the hinder Sheat (being _Fig._ 15.) by the Hole _a_, and to the Top of the Fore-sheat above the Beam by the Hole _b_. The Handles are made so long, for the more easy guiding of the Plough; but the lazy Ploughman is apt to cut them off shorter, close up to the Plough, to the end that, bearing his whole Weight thereon, he may in a manner ride instead of walking; but if he should thus ride on long Handles, he would tilt up the Fore-end of the Beam, and raise the Share out of the Ground. The chief, and most indispensably necessary thing to be observed, is, to place the Four Coulters in such a manner, that the Four imaginary Planes described by the Edges of the Four Coulters, as the Plough moves forwards, be all of them parallel to each other, or very nearly so; for if any one of them should be much inclined to, or recede from, either of the other three, they could not enter the Ground together. In order to place them thus, the Coulter-holes must be made through the Beam, in the manner as they are shewn in _Fig._ 3. _viz._ the Second Coulter-hole is Two Inches and an half more on the Right than the First, the Third, Two and an half more on the right Hand than the Second, and the Fourth, Two Inches and an half more on the right Hand than the Third, conformable to the Four Incisions or Cuts they are to make in a Ten-inch Furrow: And because no single Beam is broad enough to hold the Four Coulter-holes at this Distance, we are forced to add the Piece shewn in _Fig._ 16. The Second Hole is made Part in the Beam, and Part in this Piece; the Third and Fourth are made wholly in this Piece, in which _a_, _b_, _c_, are the Ends of the Three Screws, which fasten the Piece to the right Side of the Beam by their Nuts.