Supplement to the ministers widows scheme, [electronic resource] : in a letter to the clergy, directing the improvement of their glebes. Wherein It is shewn, That the Plan here laid down, may be executed to the far greatest Profit. And how every farmer, by applying the Rules offered, may improve any Number of Acres to a proportional Advantage. By Robert Maxwell of Arkland, a Member of, and Secretary to the Honourable, the Society of Improvers in the Knowledge of Agriculture in Scotland. When the Dust groweth into Hardness, and the Clods cleave fast together, Wilt thou hunt the Prey for the Lion, or fill the Appetite of the young Lions? &c. Job. Entered in Stationers-Hall.