The Parish of Saint John excluding that portion of land adjoining the Parish of Saint Mark which said portion is bounded on the North by Sarah Hall River and an imaginary line from its source to the stone pillar on the Mount Cenis Mountains; on the South by the Maran River; on the East by an imaginary line from the said stone pillar on the Mount Cenis Mountains to the Source of the Maran River; and on the West by the sea from the mouth of the Sarah Hall River to the mouth of the Maran River.