An Act amending the act of December 15, 1959 (P.L.1772, No.670), entitled "An act providing for the orderly disposition of properties situate within political subdivisions and donated, or otherwise dedicated or offered for dedication, where no formal record appears as to acceptance by the political subdivision, as public parks, squares or similar uses and public buildings, and no longer necessary or practicable for such purposes, and granting orphans' courts jurisdiction with respect thereto," further providing for definitions, for use of trust property and for purchase or condemnation of property.