No ordinance shall be passed except by bill, and no bill shall be so altered or amended during its passage as to change its original purpose. No bill shall be considered unless referred to a committee, returned therefrom, and printed for the use of the members, and no bill shall be passed containing more than one subject, which shall be clearly expressed in its title.

All amendments shall be printed for the use of the members before the final vote is taken on the bill, and no bill shall become an ordinance upon the same day on which it was introduced or reported. On its final passage the vote shall be taken by yeas and nays, and the names of the councilmen voting for and against the same shall be entered on the journal. No bill shall become an ordinance unless a majority of all the councilmen elected be recorded as voting in its favor.

Every legislative act of the council shall be by ordinance or resolution, and every ordinance or resolution shall, before it takes effect, be presented, duly engrossed and certified, to the mayor for his approval.

The mayor shall sign such ordinance or resolution if he approves it, whereupon it shall become law. If he disapproves it, he shall return it to the council, with his reasons for disapproval, at the first meeting thereof held not less than ten days after he receives it, and, if the council pass the same, within seven days after he has returned it with his disapproval, by a vote of three-fifths of all the members elected thereto, it shall become law without his approval. If the mayor does not return such ordinance or resolution within the time herein required, it shall become law without his approval.

The mayor may disapprove or reduce any item or items of any ordinance making appropriations, and the part or parts of such ordinance approved shall become law, and the item or items or parts of items disapproved shall not become law unless passed by the council as provided in the foregoing paragraph.