Upon a majority of the votes cast being in favor of the proposition submitted, the county board, in the case of a county, and the city council, in the case of a city, shall cause the proposition and the result of the vote to be entered upon the records of said county or city, and a notice of its adoption to be published for two successive weeks in any newspaper in said county or city, if there be one, and if not, then without such publication; and shall thereupon issue said bonds, which shall be and continue a subsisting debt against such county or city until they are paid and discharged; Provided, that the question of bond issues in such county or city, when defeated, shall not be resubmitted in substance for a period of six months from and after the date of said election.