Once elected and sworn in, a member of council may vacate his office by resignation, accepted by a majority of the other council members; by removal of his permanent residence to a place outside the limits of the city; by ceasing to be a qualified elector; by absence, without excuse by the other members of council, from meetings of the council during two consecutive months; by the acceptance of and entering upon the duties of an incompatible office; by recall, as hereinafter provided; by removal from office for malfeasance, as provided by law, or by death.