An Act amending the act of July 8, 1919 (P.L.784, No.322), entitled "An act empowering cities of the second and third classes, boroughs, and counties, to acquire, maintain, and operate playgrounds, playfields, gymnasiums, public baths, swimming pools, and indoor recreation centers; authorizing school districts to join in the maintenance and operation of said activities; and authorizing the issue of bonds and the levy of taxes for such purposes," providing for development of public parks in cities of the second class.