Zone I. All that portion of the Town of Ellicott, beginning at a point at the Jamestown City line in the center of the Lakewood Road, also known as Fairmount Avenue; thence northerly along said city line to the Celoron Village line; thence westerly along the said Celoron Village line to the center of Jackson Avenue; thence northerly along Jackson Avenue and said village line to the center of Livingston Avenue; thence westerly along said village line to Chautauqua Lake; thence westerly along Chautauqua Lake to the Busti Town line; thence southerly along said Busti Town line to a point 1,000 feet, plus or minus, south of the north line of Lot No. 64 of the Holland Land Company Survey (which is approximately 90 feet south of the southerly boundary of Orchard Read); thence easterly and 1,000 feet, plus or minus, south, parallel to the north line of Lot No. 64 Holland Land Company Survey, to a point 600 feet east of the aforementioned Lot No. 64; thence southerly 970 feet, plus or minus, to a point; thence easterly to a point which is 320 feet west, measured at right angles from the center of Howard Avenue to the Town of Busti line (also the south line of Lot No. 56 of Holland Land Company Survey); thence easterly to the southeast corner of Lot No. 56 of the Holland Land Company Survey; thence north along the east line of Lot No. 56 Holland Land Company Survey to the northeast corner thereof; thence westerly to the southwest corner of the City of Jamestown; thence northerly along the west line of the City of Jamestown to the place of beginning; except therefrom the portion thereof included within the Mercantile, Industrial, Neighborhood Business, Shopping Center and Professional Office Districts hereinafter described.