The governing body or bodies of a city, town and/or county to which this Article is applicable, having power to appropriate, individually or jointly, money therein, are hereby authorized to annually appropriate and cause to be raised by taxation in such city, town and/or county or to use from the net proceeds derived from the operation, by such city, town or county, of any public utility a sum sufficient to carry out the provisions of this Article in such proportion and upon such pro-rata basis as may be determined upon by a joint board to be appointed by and from the governing body or bodies of the city, town and/or the county or individually as the case may be. Provided, nothing herein shall be construed to permit the governing bodies of any county, city or town to issue bonds under the  provisions of this Article without a vote of the people. (1929, c. 87, s. 8.)