An Act amending the compact contained in the act of June 5, 1937 (P.L.1664, No.348), entitled "An act to ratify and adopt a compact or agreement negotiated by commissioners designated by the Governor of the Commonwealth of Pennsylvania, and commissioners designated by the Governor of the State of Ohio, relative to the development, use, and control of the Pymatuning Lake and the State owned land surrounding said lake for fishing, hunting, recreational, and park purposes," changing provisions relating to the operation of motor boats.