The speech of Nathaniel Blackerby Esq : At a general meeting of His Majesty's Justices of the Peace for the city and liberty of Westminster; held at the King's Bench, in Westminster-Hall: on Saturday, April 1. 1738. To the justices, high bailiff, high constable, and petty constables of the city and liberty of Westminister; on occasion of His Majesty's royal proclamation, and of a letter from the Lords of His Majesty's Most Honourable Privy-Council, inclosed to him, as chairman, in a letter from His Grace the Duke of Newcastle, Custos Rotulorum of the county of Middlesex, and city and liberty of Westminster: for the more effectual putting in execution the laws against retailing spirituous liquors, protecting the officers of justice, assisting the magistrates, and suppressing all combinations, confederacies, &c.