For the second reading at the time and place so advertised such ordinance may be read by title only, unless a member of Council present requests a reading in full. All interested persons present shall be given an opportunity to be heard prior to the final vote. After such reading, the Council may finally adopt such ordinance except if an amendment changes it in substance. When an ordinance is amended, it shall not be finally adopted until a summary of the amended sections is published at least once, together with a notice of the time and place, when and where, such amended ordinance will be further considered; the time shall not be less than three days after publication.