An Act amending the act of November 1, 1971 (P.L.495, No.113), entitled, "An act providing for the compensation of county officers in counties of the second through eighth classes, for compensation of district attorneys in cities and counties of the first class, for compensation of district election officers in all counties, for the disposition of fees, for filing of bonds in certain cases and for duties of certain officers," further providing for the salary of jury commissioners.