The Manner of making the Hole _i_ is as follows: Place the Seed-box with its fore End at _e_, and hinder End at _f_, with the Base of its Cylinder (or great Hole) against this added Piece of Board, and its upper Edge exactly the Height of the Edge _e f_; then, with a Pair of Compasses put thro’ the Cylinder of the Seed-box, mark round the inner Edge of its Base upon the added Board; then take off the Seed-box, and find the Centre of the mark’d Circle; and then with a Tool call’d a Centre-bit, of the right Size, bore the Hole quite thro’ the double Board; and this Hole will be in the right Place, and of the same Diameter with the Spindle; but in case there is to be a Brass Wreath on that Part of the Spindle which is to turn in this Hole, then the Hole must be bor’d of the same Diameter with that Part of the Wreath which is to enter it; and that may be perhaps near a quarter of an Inch longer than the Diameter of the Spindle, upon which it is fastened. This End A, thus bor’d and shap’d, is a Pattern for its Opposite, and for the other Two Opposites of the other Cavity, which holds the Seed at the other End of the Hopper. When the Opposite of A (with the Two Posts whereto the fore Side B, and the hinder Side C, are nail’d, and having a like Piece of Board in its lower Part with a like Hole in it) is added, and when the Bottom (Four Inches broad), with its Seed-box under it, is thrust in at f by the prick’d Lines, until it reach _e_, bearing on one Side upon the Piece of Board _e f g h_, and the other Edge of the Bottom bearing in like manner upon the opposite Piece, then this Cavity of the Hopper, which will contain about Two Gallons of Seeds, will be finish’d. _Note_, The Bottom must make a right Angle with the Two fore Posts, having the Side B perpendicular to it. D is a Part of the Board which comes out farther than the Hopper, in order to hold a Bar at _k_; which being fastened there, and in like manner to the Opposite of this Board, this Bar bearing against the fore Part of the Standard, the Hopper and its Wheels are in part drawn by it. Into the Notch _l_ is fastened one End of a long Bar, which passes the whole Length of the Hopper, and holds the upper Part of its Two Cavities in their Places, as is seen mark’d D, in _Fig._ 15. E is Part of the Board which comes before the Hopper, and whereto one End of a Piece of Wood is fastened by Nails or Screws, which bearing against the fore Part of the Standard, and against its Inside, the Hopper is in part drawn and guided by it, as shall be shewn in _Fig._ 15.