New Jersey Acts Saved from Repeal ACTS SAVED 40 § 18-4(15.1)

1. That all those parts of the counties of Hunterdon, Burlington, and Middlesex, contained within the following boundaries, viz.: beginning on the river Delaware, at the mouth of Crosswicks creek, and at the extreme western point of the division line between the townships of Nottingham and Chesterfield, in the county of Burlington, and running thence up said creek, along the middle of the same, and as the same runs its several courses, to the boundary line of Monmouth county; thence northwestwardly along said line until it strikes the boundary line of the township of East Windsor, in the county of Middlesex, which divides said township from the county of Monmouth; thence running along said line between East Windsor township and Monmouth county till it strikes Rocky brook; thence down the middle of said brook to a new road leading to Milford; thence along said road eastwardly to the westerly line of Louis Riggs' land; thence along said line northwardly to the middle of Millstone river; thence down the said river, along the middle thereof, the several courses of the same, to the line dividing the counties of Somerset and Middlesex; thence southwestwardly along said dividing line to the line of the county of Hunterdon; thence along the line dividing the counties of Somerset and Hunterdon, to a point therein where the same crosses the road called the Pennington road, leading from the village of Rockyhill to the village of Pennington; thence continuing along the middle of the said road, the various courses thereof, to the Delaware river, at Titusville; thence down said river, the several courses, and including the islands belonging to this state, to the place of beginning, be and the same is hereby erected into a separate county, to be called the county of Mercer; and said lines shall hereafter be the division lines between the counties of Hunterdon, Burlington, Middlesex and Somerset, and the state of Pennsylvania, and the county of Mercer, respectively.