A plan of association, on constitutional principles, [electronic resource] : for the parishes, tithings, hundreds, and counties of Great Britain; by which the outrages of mobs, and the necessity of a military government will be prevented, and the English Constitution in a Great Measure Restored. In Three Letters to a Member of Parliament. The First Containing-The general Causes of the late Outrages, by the Protestant Association; and Remarks on the Discoveries supposed to have been made by them. The Second-The Plan of Association. The Third-Objections to the Plan-The necessity of adopting it; or some Plan of a similar nature.