All unexpended and unencumbered balances of appropriations made from all funds of the State Treasury by the General Assembly at its regular sessions of one thousand nine hundred and thirty-seven and one thousand nine hundred and thirty-nine, and the Special Sessions of one thousand nine hundred and thirty-six and one thousand nine hundred and thirty-eight, which shall remain unexpended and unencumbered on the effective date of this act, shall lapse on that date.
72 P.S. § 3423.2