The council may provide for making any and all improvements of a general nature in the city; and for the purpose of paying for the same, may from time to time borrow money, and may issue bonds therefor, as provided by law, but no such money shall be borrowed or bonds issued, until the city council shall be instructed so to do by a majority of all the votes cast at an election held in such city for that purpose. The council shall levy taxes on all taxable property within the city, in addition to other taxes, to pay said bonds and the interest thereon, which taxes shall be paid in cash only.
K.S.A. 15-408