Whenever there shall be filed with the board of county commissioners a petition signed by not less than ten per centum of the qualified electors in any county in the state who are taxpayers therein, asking for the issuance of bonds for the purposes above specified in an amount to be designated in such petition, subject to the limitations of Section 67-6-1 N.M. Stat. Ann., said county commissioners, within thirty days after the filing of such petition, shall call a special election for the purpose of submitting to the people of the county the proposition of the issuance of bonds in accordance with such petition, and shall fix a date not less than sixty nor more than ninety days thereafter upon which a vote shall be taken thereon. Such call shall be published in at least one newspaper of general circulation in the county, once a week for four successive weeks, the last publication to be at least three days preceding the date fixed for said election. Ballots at said election shall have printed thereon the words “for the $. . . . . . . . bond issue for roads and bridges,” inserting the amount of the proposed bond issue; and in a separate line under the same words “against the $. . . . . . bond issue for roads and bridges,” inserting the amount of the proposed bond issue. Opposite said lines there shall be a square in which the voters may make or stamp a cross to indicate whether they vote for or against said bond issue, and those voting for said bond issue shall do so by placing a cross in the square opposite the words “for the $. . . . . . . . bond issue for roads and bridges,” and those voting against said bond issue shall do so by placing a cross in the square opposite, “against the $. . . . . . . . bond issue for roads and bridges.”