Section 8.7.  Same -- Contents; signatures; affidavit of petitioner; verification.
   An initiatory or referendary petition shall be signed by not less than ten (10%) percent of the registered electors of the city, as of the date of the last regular city election, and all signatures on said petitions shall be obtained within thirty days before the date of filing the petition with the clerk.  Any such petition shall be addressed to the council and may be the aggregate of two or more petition papers identical as to contents and simultaneously filed by one person.  An initiatory petition shall set forth in full the ordinance it proposes to initiate, and no petition shall propose to initiate more than one ordinance.  A referendary petition shall identify the ordinance, or part thereof, it proposes to have repealed.
   Each signer of a petition shall sign his name and place thereon after his name, the date and his place of residence by street and number, or by other customary designation.  To each petition paper there shall be attached a sworn affidavit by the circulator thereof, stating the number of signers thereof, and that each signature thereon is the genuine signature of the person whose name it purports to be, and that it was made in the presence of the affiant.  Such petitions shall be filed with the clerk who shall, within fifteen days, verify the signatures thereon.  If the petition does not contain a sufficient number of signatures of registered electors of the city, the clerk shall notify forthwith the person filing such petition and fifteen days from such notification shall be allowed for the filing of supplemental petition papers.  When a petition with sufficient signatures is filed within the time allowed by this section, the clerk shall present the petition to the council at its next regular meeting.