Beginning at a point where the line of Elmwood Avenue, now confirmed on Philadelphia City plan Number Two Hundred and Ninety-three, intersects the county line between Philadelphia County and Delaware County; thence extending in a general southwesterly direction through Darby Township, crossing Darby Creek at a point two thousand feet more or less from the place of beginning; thence continuing in a southwesterly direction, crossing Hook Road at an angle point seventeen hundred feet more or less northwest of said Darby Creek; thence still in a southwesterly direction through Colwyn Borough, Sharon Hill Borough, and Darby Township, crossing the Calcon Hook Road at a point fifteen hundred feet more or less south of the intersection of said Calcon Hook Road with Hook Road; thence crossing Tribbit Road at an angle point twenty-seven hundred feet more or less southeast of the intersection of said Tribbits Road and Hook Road; thence continuing in a general westerly direction, and crossing the Munckinipattus Creek and extending through Ridley Township, to Wanamaker Road or Lincoln Avenue at a point six hundred feet more or less northwest of Darby Creek; thence extending in a southerly direction along the said Wanamaker Road or Lincoln Avenue, being State Highway Route Number One Hundred and Thirty (130), 1 Spur A, Application Three Thousand Six Hundred and Ninety-two, crossing Darby Creek to Island Road also known as Powhattan Avenue or Essington Avenue, in the Township of Tinicum; thence westwardly along the said Island Road or Essington Avenue and passing through the Townships of Tinicum and Ridley and the Borough of Eddystone in the County of Delaware, crossing Darby, Crum, and Ridley Creeks, to Fourth Street in the city of Chester in the said county of Delaware.