As the trial of Lord George Gordon, which is fixed to come on in the Court of King's-Bench on Monday next, may occasion such a concourse of people, as to obstruct and hinder access to the courts of justice in Westminster-Hall: in order to prevent any disturbance during the continuance of that trial, the Duke of Northumberland, custos rotulorum of the county of Middlesex, and city and liberty of Westminster, desires you will not fail to meet the rest of the magistrates of the said county, and city and liberty, on Monday morning next.