The Strength and Stiffness of these Limbers must be such, that there may be no Bending betwixt their fore Ends and the Tail of the Beam; for if they be too weak, so as to yield to the Weight of the Furrow, the Point of the Share will descend into the Ground, and its Tail will rise up, and then the Plough cannot go well. The shorter they are, the stronger and stiffer will they be, of the same Thickness. We may make them just of such a Length, that there may be room for the Horse before the Bar H (which holds the Limbers at their due Distance). These are from their Ends to the Bar, Four Feet Ten Inches long and from thence to the Plank Ten Inches, and Three Inches and an half square at the Bar. I is the Whipper. K, L, are its Notches, whereunto the Traces both of the Thiller, and of the Horse next before him, are fastened. The Length of the Whipper is uncertain; but when we hoe betwixt Rows, when the Plants are grown high, we make it as short as it can be, without galling the Horse’s Legs by the Traces. We set this Plough to go deeper or shallower by the Chain of the Limbers; the changing of whose Links to the Crook M has the same Effect as changeing the Pins to different Holes of the Crow-staves of a common Plough. _Fig._ 2. is the Beam with its Mortise and Holes; its Crooking down at the Tail is not very material; but it causes the hinder Sheat to be a little the shorter below the Beam, whereby it may be something the lighter, and yet of the same Strength as if it were longer. Its whole Length is Four Feet Ten Inches: We make its Breadth and Thickness such, that it may be as light as it can be without Bending. A is the Mortise thro’ which the hinder Sheat passes. B is the Mortise for the fore Sheat, upon which it is pinned up. C is a Hole in the Beam, into which the End of the left Handle being driven, holds it from moving, and is the best Manner of fastening this Handle of a Plough. D, E, are the Holes, thro’ which the Two Legs of the double Retch pass, and are there held up by their Nuts. F is the Coulter-hole. G is the hinder Hole, by which the Plough is held up to the Plank. H and I are the Two foremost Holes of the Beam, thro’ one or the other of which passes the Pin which holds the Beam to the fore Part of the Plank. These Holes must be made as near together as they can be, without Danger of splitting them one into another; to prevent which there are several Ways: The one is by driving in Two square Pins cross the Beam, under the pricked Line _a b_, before the Holes are bored, which will prevent the Grain of the Wood from being forced out of one Hole into the other; or these Holes may be plated with Iron above and below, which will have the same Effect, and then there need not be more than One Inch between Hole and Hole. _Fig._ 3. is the Plank apart, which by its Holes, and pricked Lines, shews the different Manner of placing the Beam. _a_, _a_, _a_, _a_, are the Four Holes for screwing down the Limbers to the Plank.