8. Every park durwan shall, in addition to any powers and immunities specially conferred on him by this Act or by rules made hereunder, have, within the limits of the park to which he is appointed, all such powers, privileges and immunities, and shall, within the said limits be liable to all such duties and responsibilities, as a police-constable has and is liable to within the limits of the police-station in which such park is comprised:Provided that every park durwan shall be subordinate to the superintendent.