Should such joint certificate of public convenience and necessity be issued by the Mississippi Agricultural and Industrial Board, the governing authority of such city, town or village shall direct the holding of an election in the manner provided as to it by Section 57-1-25, and the board of supervisors of the county in which such supervisors district is situated shall direct the holding of a separate election in such supervisors district in the manner provided by Section 57-1-25 for such elections. In the event the proposal be approved as required by Section 57-1-25, both in the election for the supervisors district and in the election for the city, town or village, computed and declared separately, then the board of supervisors and the governing authority of such city, town or village, respectively, may issue the bonds authorized by said elections, respectively, as provided by the aforesaid Sections 57-1-1 through 57-1-51.Codes, 1942, § 8936-41; Laws, 1952, ch. 421, §§ 1-4; Laws, 1958, ch. 526, §§ 2-5; Laws, 1960, ch. 212, §§ 1-3.