§ 33. Meetings. The common council shall hold regular meetings at times to be determined by it from time to time. The president of the common council, or a majority of its members, may call a special meeting of the common council by causing a written notice thereof, specifying the objects of the meeting, to be served by the city clerk upon each member personally or by mail, directed to his place of residence or place of business, at least twenty-four hours before the time fixed for such meeting.