The several townships, cities and incorporated villages of this state, by a majority vote of the electors thereof voting at any general or special election called for that purpose, are hereby authorized to appropriate and transfer any unexpended balances or portions thereof in its general or contingent fund to the county in which it is situated, such revenues to be credited to the general fund of the county, to be disbursed for such purpose or purposes as may be designated by the electors in voting on the proposition, and, in case of no designation, as shall be determined by the board of supervisors of the county.