(Pursuant to the notice thrown out by the Society for the Encouragement of Arts, Manufactures, and Commerce.) The construction and extensive use of a newly invented universal seed-furrow plough (from time to time expos'd to the public view of abundance of people.) Upon an easy, steady principle, suited to all soils, stiff or light, level or ridg'd; and capable of sowing all sorts of seeds, in three rows, thicker or thinner, deeper or shallower, and the furrows or rows nearer or further asunder, just as the owner pleases. Also, by the invitation of the Society, the construction of a draining plough, upon a very simple principle. Both published with a view, that the ingenious may, within the Society's limited time, see what is wanting to put the finishing hand to a seed-furrow, and also to a draining plough. With the construction and use of a potatoe-drill machine, pointing out the benefit arising from this wholesale culture, to the land, and to some the live-stock. To which is added, an essay on the theory of a common plough, in order to find, by geometrical construction, the angles which give the share exact land and earth at all depths, and which ballance the motions of the plough. Illustrated with seven large copper-plates. By J. Randall, a few years since master of the academy at Heath, near Wakefield, Yorkshire