A look into the law 170 years ago shows how much of a market town Boston had become for the surrounding area. Few town pounds (the domain of the Pound Keeper) survive, but an example of a town pound in Norwood, MA can be seen here.
From The Charter and Ordinances of the City of Boston together with the Acts of the Legislature Relating to the City, Boston, 1834.
An ordinance relative to the election of certain City Officers [Passed May 9, 1822]
Be it ordained by the Mayor, Aldermen, and Common Council of the City of Boston, in the City Council assembled, that the mode of electing the following officers to wit: Fence Viewers, Surveyors of the High Ways, Surveyors of Lumber, Cullers of Hoops and Staves, Hogreeves, Haywards and Field Drivers, Pound Keepers, Inspectors of Lime, Surveyors of Hemp, Surveyors of Wheat, Assay Masters, and Cullers of Fish, shall be as follows to wit: they shall first be elected by the Mayor and Aldermen, and sent down to the Common Council for its concurrence, relection, or amendment.