"The land-side of the Plough, measuring from the point of the mould-board, is two feet and two inches long. It is a strait-lined surface, from four to five and one-half inches wide, and half an inch thick. Its more particular description will be hereinafterwards given. It is sufficient to observe here, that of the twenty-six inches of length on the land-side, eighteen inches belong to the part of the Plough strictly called the land-side, and eight inches to the mould-board. The part of the mould-board comprehended by this space of eight inches is very important, affording weight and strength and substance to the Plough; enabling it the better to sustain the cutting-edge for separating and elevating the soil or sward, and likewise the standard for connecting the mould-board with the beam, as will hereinafter be described more at large. "The figure of the mould-board, as observed from the furrow-side, is a sort of irregular pentagon, or five-sided plane, though curved and inclined in a peculiar manner. Its two lower sides touch the ground, or are intended to do so, while the three other sides enter into the composition of the oblique, or slanting mould-board, over-hanging behind, vertical midway, and projecting forward. The angle of the mould-board, as it departs from the foremost point of, or at, the land-side, is about forty-two degrees, and the length of it, or, in other words, of the first side, is eleven inches. The line of the next, or the second side, is nearly, but not exactly parallel with the before-mentioned right-lined land-side, for it widens or diverges from the angle at which the first and second sides join towards its posterior or hindermost point, as much as one inch. Hence, the distance from the hindermost point of the mould-board, at the angle of the second and third sides, directly across to the land-side, is one inch more than it is from the angle of the first and second sides, directly across. The length of this, the second side, is eight inches. The next side, or what is here denominated the third side, leaves the ground or furrow in a slanting direction backward, and with an over-hanging curve, exceeding the perpendicular outwards from three to six inches, according to the size of the Plough. The length of this third side is fourteen inches and one-half. The fourth side of this mould-board is horizontal, or nearly so, extending from the uppermost point of the third side, to the fore part, or pitch, eighteen inches. The fifth, or last side, descends or slopes from the last mentioned mark, spot, or pitch, to the place of beginning at the low and fore point of the mould-board, where it joins the land-side. Its length is thirteen inches.