An Act amending the act of July 7, 1947 (P.L.1368, No.542), known as the Real Estate Tax Sale Law, further providing for the definitions of "county" and "taxing district," for the authority to file a petition for sequestration, for extension of period for discharge of tax claim, for the purpose of the unsold property repository and for responsibility for a property in the unsold property repository; providing for the effect of a sale on a lease; and further providing for delivery to the bureau of property acquired by a taxing district.