An Act amending the act of June 28, 1931 (P. L. 1379, No. 348), entitled, as amended, "An act creating in counties of the second A and third class a board for assessment and revision of taxes; providing for the appointment of the members of such board by the county commissioners; providing for their salaries, payable by the county; ***; and providing for the acceptance of this act by cities," further providing for assessment, revision and appeals.