Observations on the office of constable, with a view to its improvement : In a letter to Patrick Colquhoun, Esq. one of His Majesty's justices of the peace for the counties of Middlesex, Surry, Kent, and Essex, &c. &c. - G. H. (Printed by M. Hitchie, Middle Street, Cloth Fair, and sold by S. Sael, Strand, T. Conder, Bucklersbury, and T. Burnett, Tabernacle Walk, Finsbury Square,, 1799)