The Park Board heretofore established by the City is to be continued in force and carried over into this Charter forming an integral part of the city government. The board of Park Commissioners shall be three in number appointed by the Mayor with the consent of the City Council, and shall serve without compensation. The Board of Park Commissioners shall have control and supervision of all parks belonging to the city, and shall have power to prescribe rules and regulations for the government and management thereof, which rules and regulations shall be enforced by the Police Department of the city.