A third letter to the Lord Bishop of Carlisle, Lord Almoner to his Majesty, upon the subject of Bishop Merks; wherein the nomination, election, investiture and deprivation of English prelates, are shew'd to have been originally constituted and govern'd by the sovereign power of Kings and their parliaments: Against the pretensions of our new fanaticks, who have withdrawn themselves from the establish'd church into a separate communion, under the name of some deprived bishops and their supposed successors