When the Beam is screwed up at B and F, and makes the same Angles with the Plank, as the pricked Line _b c_ doth; then the Draw-pin standing in the Hole 8 or 9, will bring the Plough so much to the Left, that the Share will point too much towards the Right; then remove the fore End of the Beam to the Hole D, and then the Beam will make the same Angle with the Plank as the pricked Line _c d_, which may bring the Share to be parallel to the Horse-path nearly enough: But if the Draw-pin should be placed in the Hole 1. then the Plank would go so much on the Right of the Horse-path, that the Share would point vastly too much towards the Left, standing in either of these Two Positions: Therefore the foremost Pin must be removed to the Hole E, and then the Beam being at the same Angles with the Plank as the pricked Line _f g_, it may be parallel to the Horse-path, or so nearly, that by removing the Draw-pin one Hole, it may be made perfectly so. _Note_, That tho’ here are but Nine Holes for the Draw-pin; yet we usually make many more in our Planks: And sometimes by changing the Draw-pin either Way into another Hole, tho’ that Hole be but an Inch distant from the former, the Share is brought right without any Inconvenience. The Holes A and C have each of them their opposite Holes, which (when the Beam is placed into either of the Two) have the same Effect, for keeping the Share parallel to the Horse-path, as the Hole B and its Three opposite Holes have; and if either of the Holes belonging to A, B, or C, should not bring the Beam sufficiently oblique to the Plank, for the Share to be parallel to the Horse-path, when the Draw-pin is in some one particular Hole, then there may be another Hole bored before, on the Right or Left, for the fore Pin to pass thro’ by the Hole H of the Beam _Fig._ 2. which will incline the Beam a little more to the Right or Left, as occasion requires; and if none of all these be sufficient, the Plank may be turned the other Side upwards; and the Beam being fastened there by the hinder Screw into any one of those Holes, which were next to the fore Edge of the Plank before it was reversed, there may be a new Set of Holes to answer the fore Pin, of which that which was an hinder Hole before the Plank was reversed, may be one. These may set the Beam at different Angles from any of the first Holes; so that there may be at one End of the Plank Six Systems of Holes, Three on the one Side, and Three on the other; and if we have a mind to make yet more various Positions of the Plough, we may turn the Plank, End for End, and there make Six different Systems of Holes.